* [PATCH 1/9] drm: Extract drm_encoder.[hc]
@ 2016-08-17 20:55 Daniel Vetter
2016-08-17 20:55 ` [PATCH 2/9] drm/doc: Polish kerneldoc for encoders Daniel Vetter
` (9 more replies)
0 siblings, 10 replies; 24+ messages in thread
From: Daniel Vetter @ 2016-08-17 20:55 UTC (permalink / raw)
To: DRI Development; +Cc: Daniel Vetter, Intel Graphics Development, Daniel Vetter
Same treatment as before. Only hiccup is drm_crtc_mask, which
unfortunately can't be resolved until drm_crtc.h is less of a monster.
Untangle the header loop with a forward delcaration for that static
inline.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
---
Documentation/gpu/drm-kms.rst | 9 ++
drivers/gpu/drm/Makefile | 3 +-
drivers/gpu/drm/drm_crtc.c | 193 -------------------------------
drivers/gpu/drm/drm_crtc_internal.h | 10 +-
drivers/gpu/drm/drm_encoder.c | 220 ++++++++++++++++++++++++++++++++++++
include/drm/drm_crtc.h | 134 +---------------------
include/drm/drm_encoder.h | 167 +++++++++++++++++++++++++++
7 files changed, 407 insertions(+), 329 deletions(-)
create mode 100644 drivers/gpu/drm/drm_encoder.c
create mode 100644 include/drm/drm_encoder.h
diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
index fa948b4e029b..7f788caebea3 100644
--- a/Documentation/gpu/drm-kms.rst
+++ b/Documentation/gpu/drm-kms.rst
@@ -125,6 +125,15 @@ Connector Functions Reference
.. kernel-doc:: drivers/gpu/drm/drm_connector.c
:export:
+Encoder Abstraction
+===================
+
+.. kernel-doc:: include/drm/drm_encoder.h
+ :internal:
+
+.. kernel-doc:: drivers/gpu/drm/drm_encoder.c
+ :export:
+
KMS Initialization and Cleanup
==============================
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 193ff2d09479..efdb4176230f 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -13,7 +13,8 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \
drm_trace_points.o drm_global.o drm_prime.o \
drm_rect.o drm_vma_manager.o drm_flip_work.o \
drm_modeset_lock.o drm_atomic.o drm_bridge.o \
- drm_framebuffer.o drm_connector.o drm_blend.o
+ drm_framebuffer.o drm_connector.o drm_blend.o \
+ drm_encoder.o
drm-$(CONFIG_COMPAT) += drm_ioc32.o
drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 8a80c1a45d13..f89711b16d3e 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -54,18 +54,6 @@ static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
{ DRM_PLANE_TYPE_CURSOR, "Cursor" },
};
-static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
- { DRM_MODE_ENCODER_NONE, "None" },
- { DRM_MODE_ENCODER_DAC, "DAC" },
- { DRM_MODE_ENCODER_TMDS, "TMDS" },
- { DRM_MODE_ENCODER_LVDS, "LVDS" },
- { DRM_MODE_ENCODER_TVDAC, "TV" },
- { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
- { DRM_MODE_ENCODER_DSI, "DSI" },
- { DRM_MODE_ENCODER_DPMST, "DP MST" },
- { DRM_MODE_ENCODER_DPI, "DPI" },
-};
-
/*
* Optional properties
*/
@@ -419,117 +407,6 @@ void drm_crtc_cleanup(struct drm_crtc *crtc)
}
EXPORT_SYMBOL(drm_crtc_cleanup);
-static int drm_encoder_register_all(struct drm_device *dev)
-{
- struct drm_encoder *encoder;
- int ret = 0;
-
- drm_for_each_encoder(encoder, dev) {
- if (encoder->funcs->late_register)
- ret = encoder->funcs->late_register(encoder);
- if (ret)
- return ret;
- }
-
- return 0;
-}
-
-static void drm_encoder_unregister_all(struct drm_device *dev)
-{
- struct drm_encoder *encoder;
-
- drm_for_each_encoder(encoder, dev) {
- if (encoder->funcs->early_unregister)
- encoder->funcs->early_unregister(encoder);
- }
-}
-
-/**
- * drm_encoder_init - Init a preallocated encoder
- * @dev: drm device
- * @encoder: the encoder to init
- * @funcs: callbacks for this encoder
- * @encoder_type: user visible type of the encoder
- * @name: printf style format string for the encoder name, or NULL for default name
- *
- * Initialises a preallocated encoder. Encoder should be
- * subclassed as part of driver encoder objects.
- *
- * Returns:
- * Zero on success, error code on failure.
- */
-int drm_encoder_init(struct drm_device *dev,
- struct drm_encoder *encoder,
- const struct drm_encoder_funcs *funcs,
- int encoder_type, const char *name, ...)
-{
- int ret;
-
- drm_modeset_lock_all(dev);
-
- ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
- if (ret)
- goto out_unlock;
-
- encoder->dev = dev;
- encoder->encoder_type = encoder_type;
- encoder->funcs = funcs;
- if (name) {
- va_list ap;
-
- va_start(ap, name);
- encoder->name = kvasprintf(GFP_KERNEL, name, ap);
- va_end(ap);
- } else {
- encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
- drm_encoder_enum_list[encoder_type].name,
- encoder->base.id);
- }
- if (!encoder->name) {
- ret = -ENOMEM;
- goto out_put;
- }
-
- list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
- encoder->index = dev->mode_config.num_encoder++;
-
-out_put:
- if (ret)
- drm_mode_object_unregister(dev, &encoder->base);
-
-out_unlock:
- drm_modeset_unlock_all(dev);
-
- return ret;
-}
-EXPORT_SYMBOL(drm_encoder_init);
-
-/**
- * drm_encoder_cleanup - cleans up an initialised encoder
- * @encoder: encoder to cleanup
- *
- * Cleans up the encoder but doesn't free the object.
- */
-void drm_encoder_cleanup(struct drm_encoder *encoder)
-{
- struct drm_device *dev = encoder->dev;
-
- /* Note that the encoder_list is considered to be static; should we
- * remove the drm_encoder at runtime we would have to decrement all
- * the indices on the drm_encoder after us in the encoder_list.
- */
-
- drm_modeset_lock_all(dev);
- drm_mode_object_unregister(dev, &encoder->base);
- kfree(encoder->name);
- list_del(&encoder->head);
- dev->mode_config.num_encoder--;
- drm_modeset_unlock_all(dev);
-
- memset(encoder, 0, sizeof(*encoder));
-}
-EXPORT_SYMBOL(drm_encoder_cleanup);
-
static unsigned int drm_num_planes(struct drm_device *dev)
{
unsigned int num = 0;
@@ -1167,76 +1044,6 @@ int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
return 0;
}
-static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
-{
- struct drm_connector *connector;
- struct drm_device *dev = encoder->dev;
- bool uses_atomic = false;
-
- /* For atomic drivers only state objects are synchronously updated and
- * protected by modeset locks, so check those first. */
- drm_for_each_connector(connector, dev) {
- if (!connector->state)
- continue;
-
- uses_atomic = true;
-
- if (connector->state->best_encoder != encoder)
- continue;
-
- return connector->state->crtc;
- }
-
- /* Don't return stale data (e.g. pending async disable). */
- if (uses_atomic)
- return NULL;
-
- return encoder->crtc;
-}
-
-/**
- * drm_mode_getencoder - get encoder configuration
- * @dev: drm device for the ioctl
- * @data: data pointer for the ioctl
- * @file_priv: drm file for the ioctl call
- *
- * Construct a encoder configuration structure to return to the user.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
-int drm_mode_getencoder(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_mode_get_encoder *enc_resp = data;
- struct drm_encoder *encoder;
- struct drm_crtc *crtc;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- encoder = drm_encoder_find(dev, enc_resp->encoder_id);
- if (!encoder)
- return -ENOENT;
-
- drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
- crtc = drm_encoder_get_crtc(encoder);
- if (crtc)
- enc_resp->crtc_id = crtc->base.id;
- else
- enc_resp->crtc_id = 0;
- drm_modeset_unlock(&dev->mode_config.connection_mutex);
-
- enc_resp->encoder_type = encoder->encoder_type;
- enc_resp->encoder_id = encoder->base.id;
- enc_resp->possible_crtcs = encoder->possible_crtcs;
- enc_resp->possible_clones = encoder->possible_clones;
-
- return 0;
-}
-
/**
* drm_mode_getplane_res - enumerate all plane resources
* @dev: DRM device
diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
index 97b00312a3cf..69f2b21ddad3 100644
--- a/drivers/gpu/drm/drm_crtc_internal.h
+++ b/drivers/gpu/drm/drm_crtc_internal.h
@@ -105,8 +105,6 @@ int drm_mode_createblob_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
int drm_mode_destroyblob_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
-int drm_mode_getencoder(struct drm_device *dev,
- void *data, struct drm_file *file_priv);
int drm_mode_gamma_get_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
int drm_mode_gamma_set_ioctl(struct drm_device *dev,
@@ -115,6 +113,14 @@ int drm_mode_gamma_set_ioctl(struct drm_device *dev,
int drm_mode_page_flip_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
+/* drm_encoder.c */
+int drm_encoder_register_all(struct drm_device *dev);
+void drm_encoder_unregister_all(struct drm_device *dev);
+
+/* IOCTL */
+int drm_mode_getencoder(struct drm_device *dev,
+ void *data, struct drm_file *file_priv);
+
/* drm_connector.c */
void drm_connector_ida_init(void);
void drm_connector_ida_destroy(void);
diff --git a/drivers/gpu/drm/drm_encoder.c b/drivers/gpu/drm/drm_encoder.c
new file mode 100644
index 000000000000..bce781b7bb5f
--- /dev/null
+++ b/drivers/gpu/drm/drm_encoder.c
@@ -0,0 +1,220 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <linux/export.h>
+#include <drm/drmP.h>
+#include <drm/drm_encoder.h>
+
+#include "drm_crtc_internal.h"
+
+static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
+ { DRM_MODE_ENCODER_NONE, "None" },
+ { DRM_MODE_ENCODER_DAC, "DAC" },
+ { DRM_MODE_ENCODER_TMDS, "TMDS" },
+ { DRM_MODE_ENCODER_LVDS, "LVDS" },
+ { DRM_MODE_ENCODER_TVDAC, "TV" },
+ { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
+ { DRM_MODE_ENCODER_DSI, "DSI" },
+ { DRM_MODE_ENCODER_DPMST, "DP MST" },
+ { DRM_MODE_ENCODER_DPI, "DPI" },
+};
+
+int drm_encoder_register_all(struct drm_device *dev)
+{
+ struct drm_encoder *encoder;
+ int ret = 0;
+
+ drm_for_each_encoder(encoder, dev) {
+ if (encoder->funcs->late_register)
+ ret = encoder->funcs->late_register(encoder);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+void drm_encoder_unregister_all(struct drm_device *dev)
+{
+ struct drm_encoder *encoder;
+
+ drm_for_each_encoder(encoder, dev) {
+ if (encoder->funcs->early_unregister)
+ encoder->funcs->early_unregister(encoder);
+ }
+}
+
+/**
+ * drm_encoder_init - Init a preallocated encoder
+ * @dev: drm device
+ * @encoder: the encoder to init
+ * @funcs: callbacks for this encoder
+ * @encoder_type: user visible type of the encoder
+ * @name: printf style format string for the encoder name, or NULL for default name
+ *
+ * Initialises a preallocated encoder. Encoder should be
+ * subclassed as part of driver encoder objects.
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int drm_encoder_init(struct drm_device *dev,
+ struct drm_encoder *encoder,
+ const struct drm_encoder_funcs *funcs,
+ int encoder_type, const char *name, ...)
+{
+ int ret;
+
+ drm_modeset_lock_all(dev);
+
+ ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
+ if (ret)
+ goto out_unlock;
+
+ encoder->dev = dev;
+ encoder->encoder_type = encoder_type;
+ encoder->funcs = funcs;
+ if (name) {
+ va_list ap;
+
+ va_start(ap, name);
+ encoder->name = kvasprintf(GFP_KERNEL, name, ap);
+ va_end(ap);
+ } else {
+ encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
+ drm_encoder_enum_list[encoder_type].name,
+ encoder->base.id);
+ }
+ if (!encoder->name) {
+ ret = -ENOMEM;
+ goto out_put;
+ }
+
+ list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
+ encoder->index = dev->mode_config.num_encoder++;
+
+out_put:
+ if (ret)
+ drm_mode_object_unregister(dev, &encoder->base);
+
+out_unlock:
+ drm_modeset_unlock_all(dev);
+
+ return ret;
+}
+EXPORT_SYMBOL(drm_encoder_init);
+
+/**
+ * drm_encoder_cleanup - cleans up an initialised encoder
+ * @encoder: encoder to cleanup
+ *
+ * Cleans up the encoder but doesn't free the object.
+ */
+void drm_encoder_cleanup(struct drm_encoder *encoder)
+{
+ struct drm_device *dev = encoder->dev;
+
+ /* Note that the encoder_list is considered to be static; should we
+ * remove the drm_encoder at runtime we would have to decrement all
+ * the indices on the drm_encoder after us in the encoder_list.
+ */
+
+ drm_modeset_lock_all(dev);
+ drm_mode_object_unregister(dev, &encoder->base);
+ kfree(encoder->name);
+ list_del(&encoder->head);
+ dev->mode_config.num_encoder--;
+ drm_modeset_unlock_all(dev);
+
+ memset(encoder, 0, sizeof(*encoder));
+}
+EXPORT_SYMBOL(drm_encoder_cleanup);
+
+static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
+{
+ struct drm_connector *connector;
+ struct drm_device *dev = encoder->dev;
+ bool uses_atomic = false;
+
+ /* For atomic drivers only state objects are synchronously updated and
+ * protected by modeset locks, so check those first. */
+ drm_for_each_connector(connector, dev) {
+ if (!connector->state)
+ continue;
+
+ uses_atomic = true;
+
+ if (connector->state->best_encoder != encoder)
+ continue;
+
+ return connector->state->crtc;
+ }
+
+ /* Don't return stale data (e.g. pending async disable). */
+ if (uses_atomic)
+ return NULL;
+
+ return encoder->crtc;
+}
+
+/**
+ * drm_mode_getencoder - get encoder configuration
+ * @dev: drm device for the ioctl
+ * @data: data pointer for the ioctl
+ * @file_priv: drm file for the ioctl call
+ *
+ * Construct a encoder configuration structure to return to the user.
+ *
+ * Called by the user via ioctl.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_mode_getencoder(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_mode_get_encoder *enc_resp = data;
+ struct drm_encoder *encoder;
+ struct drm_crtc *crtc;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ encoder = drm_encoder_find(dev, enc_resp->encoder_id);
+ if (!encoder)
+ return -ENOENT;
+
+ drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
+ crtc = drm_encoder_get_crtc(encoder);
+ if (crtc)
+ enc_resp->crtc_id = crtc->base.id;
+ else
+ enc_resp->crtc_id = 0;
+ drm_modeset_unlock(&dev->mode_config.connection_mutex);
+
+ enc_resp->encoder_type = encoder->encoder_type;
+ enc_resp->encoder_id = encoder->base.id;
+ enc_resp->possible_crtcs = encoder->possible_crtcs;
+ enc_resp->possible_clones = encoder->possible_clones;
+
+ return 0;
+}
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 3fa0275e509f..61d81fb3c8fc 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -40,6 +40,7 @@
#include <drm/drm_framebuffer.h>
#include <drm/drm_modes.h>
#include <drm/drm_connector.h>
+#include <drm/drm_encoder.h>
struct drm_device;
struct drm_mode_set;
@@ -662,97 +663,6 @@ struct drm_crtc {
};
/**
- * struct drm_encoder_funcs - encoder controls
- *
- * Encoders sit between CRTCs and connectors.
- */
-struct drm_encoder_funcs {
- /**
- * @reset:
- *
- * Reset encoder hardware and software state to off. This function isn't
- * called by the core directly, only through drm_mode_config_reset().
- * It's not a helper hook only for historical reasons.
- */
- void (*reset)(struct drm_encoder *encoder);
-
- /**
- * @destroy:
- *
- * Clean up encoder resources. This is only called at driver unload time
- * through drm_mode_config_cleanup() since an encoder cannot be
- * hotplugged in DRM.
- */
- void (*destroy)(struct drm_encoder *encoder);
-
- /**
- * @late_register:
- *
- * This optional hook can be used to register additional userspace
- * interfaces attached to the encoder like debugfs interfaces.
- * It is called late in the driver load sequence from drm_dev_register().
- * Everything added from this callback should be unregistered in
- * the early_unregister callback.
- *
- * Returns:
- *
- * 0 on success, or a negative error code on failure.
- */
- int (*late_register)(struct drm_encoder *encoder);
-
- /**
- * @early_unregister:
- *
- * This optional hook should be used to unregister the additional
- * userspace interfaces attached to the encoder from
- * late_unregister(). It is called from drm_dev_unregister(),
- * early in the driver unload sequence to disable userspace access
- * before data structures are torndown.
- */
- void (*early_unregister)(struct drm_encoder *encoder);
-};
-
-/**
- * struct drm_encoder - central DRM encoder structure
- * @dev: parent DRM device
- * @head: list management
- * @base: base KMS object
- * @name: human readable name, can be overwritten by the driver
- * @encoder_type: one of the DRM_MODE_ENCODER_<foo> types in drm_mode.h
- * @possible_crtcs: bitmask of potential CRTC bindings
- * @possible_clones: bitmask of potential sibling encoders for cloning
- * @crtc: currently bound CRTC
- * @bridge: bridge associated to the encoder
- * @funcs: control functions
- * @helper_private: mid-layer private data
- *
- * CRTCs drive pixels to encoders, which convert them into signals
- * appropriate for a given connector or set of connectors.
- */
-struct drm_encoder {
- struct drm_device *dev;
- struct list_head head;
-
- struct drm_mode_object base;
- char *name;
- int encoder_type;
-
- /**
- * @index: Position inside the mode_config.list, can be used as an array
- * index. It is invariant over the lifetime of the encoder.
- */
- unsigned index;
-
- uint32_t possible_crtcs;
- uint32_t possible_clones;
-
- struct drm_crtc *crtc;
- struct drm_bridge *bridge;
- const struct drm_encoder_funcs *funcs;
- const struct drm_encoder_helper_funcs *helper_private;
-};
-
-/**
* struct drm_plane_state - mutable plane state
* @plane: backpointer to the plane
* @crtc: currently bound CRTC, NULL if disabled
@@ -2091,7 +2001,6 @@ struct drm_mode_config {
for_each_if ((encoder_mask) & (1 << drm_encoder_index(encoder)))
#define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
-#define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
#define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
#define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
#define obj_to_property(x) container_of(x, struct drm_property, base)
@@ -2136,37 +2045,6 @@ static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc)
return 1 << drm_crtc_index(crtc);
}
-extern __printf(5, 6)
-int drm_encoder_init(struct drm_device *dev,
- struct drm_encoder *encoder,
- const struct drm_encoder_funcs *funcs,
- int encoder_type, const char *name, ...);
-
-/**
- * drm_encoder_index - find the index of a registered encoder
- * @encoder: encoder to find index for
- *
- * Given a registered encoder, return the index of that encoder within a DRM
- * device's list of encoders.
- */
-static inline unsigned int drm_encoder_index(struct drm_encoder *encoder)
-{
- return encoder->index;
-}
-
-/**
- * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
- * @encoder: encoder to test
- * @crtc: crtc to test
- *
- * Return false if @encoder can't be driven by @crtc, true otherwise.
- */
-static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
- struct drm_crtc *crtc)
-{
- return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
-}
-
extern __printf(8, 9)
int drm_universal_plane_init(struct drm_device *dev,
struct drm_plane *plane,
@@ -2202,8 +2080,6 @@ extern void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
extern int drm_crtc_force_disable(struct drm_crtc *crtc);
extern int drm_crtc_force_disable_all(struct drm_device *dev);
-extern void drm_encoder_cleanup(struct drm_encoder *encoder);
-
extern void drm_mode_config_init(struct drm_device *dev);
extern void drm_mode_config_reset(struct drm_device *dev);
extern void drm_mode_config_cleanup(struct drm_device *dev);
@@ -2315,14 +2191,6 @@ static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,
return mo ? obj_to_crtc(mo) : NULL;
}
-static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev,
- uint32_t id)
-{
- struct drm_mode_object *mo;
- mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
- return mo ? obj_to_encoder(mo) : NULL;
-}
-
static inline struct drm_property *drm_property_find(struct drm_device *dev,
uint32_t id)
{
diff --git a/include/drm/drm_encoder.h b/include/drm/drm_encoder.h
new file mode 100644
index 000000000000..2712fd1a686b
--- /dev/null
+++ b/include/drm/drm_encoder.h
@@ -0,0 +1,167 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef __DRM_ENCODER_H__
+#define __DRM_ENCODER_H__
+
+#include <linux/list.h>
+#include <linux/ctype.h>
+#include <drm/drm_modeset.h>
+
+/**
+ * struct drm_encoder_funcs - encoder controls
+ *
+ * Encoders sit between CRTCs and connectors.
+ */
+struct drm_encoder_funcs {
+ /**
+ * @reset:
+ *
+ * Reset encoder hardware and software state to off. This function isn't
+ * called by the core directly, only through drm_mode_config_reset().
+ * It's not a helper hook only for historical reasons.
+ */
+ void (*reset)(struct drm_encoder *encoder);
+
+ /**
+ * @destroy:
+ *
+ * Clean up encoder resources. This is only called at driver unload time
+ * through drm_mode_config_cleanup() since an encoder cannot be
+ * hotplugged in DRM.
+ */
+ void (*destroy)(struct drm_encoder *encoder);
+
+ /**
+ * @late_register:
+ *
+ * This optional hook can be used to register additional userspace
+ * interfaces attached to the encoder like debugfs interfaces.
+ * It is called late in the driver load sequence from drm_dev_register().
+ * Everything added from this callback should be unregistered in
+ * the early_unregister callback.
+ *
+ * Returns:
+ *
+ * 0 on success, or a negative error code on failure.
+ */
+ int (*late_register)(struct drm_encoder *encoder);
+
+ /**
+ * @early_unregister:
+ *
+ * This optional hook should be used to unregister the additional
+ * userspace interfaces attached to the encoder from
+ * late_unregister(). It is called from drm_dev_unregister(),
+ * early in the driver unload sequence to disable userspace access
+ * before data structures are torndown.
+ */
+ void (*early_unregister)(struct drm_encoder *encoder);
+};
+
+/**
+ * struct drm_encoder - central DRM encoder structure
+ * @dev: parent DRM device
+ * @head: list management
+ * @base: base KMS object
+ * @name: human readable name, can be overwritten by the driver
+ * @encoder_type: one of the DRM_MODE_ENCODER_<foo> types in drm_mode.h
+ * @possible_crtcs: bitmask of potential CRTC bindings
+ * @possible_clones: bitmask of potential sibling encoders for cloning
+ * @crtc: currently bound CRTC
+ * @bridge: bridge associated to the encoder
+ * @funcs: control functions
+ * @helper_private: mid-layer private data
+ *
+ * CRTCs drive pixels to encoders, which convert them into signals
+ * appropriate for a given connector or set of connectors.
+ */
+struct drm_encoder {
+ struct drm_device *dev;
+ struct list_head head;
+
+ struct drm_mode_object base;
+ char *name;
+ int encoder_type;
+
+ /**
+ * @index: Position inside the mode_config.list, can be used as an array
+ * index. It is invariant over the lifetime of the encoder.
+ */
+ unsigned index;
+
+ uint32_t possible_crtcs;
+ uint32_t possible_clones;
+
+ struct drm_crtc *crtc;
+ struct drm_bridge *bridge;
+ const struct drm_encoder_funcs *funcs;
+ const struct drm_encoder_helper_funcs *helper_private;
+};
+
+#define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
+
+__printf(5, 6)
+int drm_encoder_init(struct drm_device *dev,
+ struct drm_encoder *encoder,
+ const struct drm_encoder_funcs *funcs,
+ int encoder_type, const char *name, ...);
+
+/**
+ * drm_encoder_index - find the index of a registered encoder
+ * @encoder: encoder to find index for
+ *
+ * Given a registered encoder, return the index of that encoder within a DRM
+ * device's list of encoders.
+ */
+static inline unsigned int drm_encoder_index(struct drm_encoder *encoder)
+{
+ return encoder->index;
+}
+
+/* FIXME: We have an include file mess still, drm_crtc.h needs untangling. */
+static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc);
+
+/**
+ * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
+ * @encoder: encoder to test
+ * @crtc: crtc to test
+ *
+ * Return false if @encoder can't be driven by @crtc, true otherwise.
+ */
+static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
+ struct drm_crtc *crtc)
+{
+ return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
+}
+
+static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev,
+ uint32_t id)
+{
+ struct drm_mode_object *mo;
+ mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
+ return mo ? obj_to_encoder(mo) : NULL;
+}
+
+void drm_encoder_cleanup(struct drm_encoder *encoder);
+
+#endif
--
2.8.1
_______________________________________________
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Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [PATCH 2/9] drm/doc: Polish kerneldoc for encoders
2016-08-17 20:55 [PATCH 1/9] drm: Extract drm_encoder.[hc] Daniel Vetter
@ 2016-08-17 20:55 ` Daniel Vetter
2016-08-25 12:24 ` Archit Taneja
2016-08-17 20:56 ` [PATCH 3/9] drm: Extract drm_mode_object.[hc] Daniel Vetter
` (8 subsequent siblings)
9 siblings, 1 reply; 24+ messages in thread
From: Daniel Vetter @ 2016-08-17 20:55 UTC (permalink / raw)
To: DRI Development; +Cc: Daniel Vetter, Intel Graphics Development, Daniel Vetter
- Move missing bits into struct drm_encoder docs.
- Explain that encoders are 95% internal and only 5% uapi, and that in
general the uapi part is broken.
- Remove verbose comments for functions not exposed to drivers.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
---
Documentation/gpu/drm-kms.rst | 46 ++++--------------------------
drivers/gpu/drm/drm_encoder.c | 41 +++++++++++++++++----------
include/drm/drm_encoder.h | 65 ++++++++++++++++++++++++++++++++++++++++---
3 files changed, 93 insertions(+), 59 deletions(-)
diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
index 7f788caebea3..47c2835b7c2d 100644
--- a/Documentation/gpu/drm-kms.rst
+++ b/Documentation/gpu/drm-kms.rst
@@ -128,6 +128,12 @@ Connector Functions Reference
Encoder Abstraction
===================
+.. kernel-doc:: drivers/gpu/drm/drm_encoder.c
+ :doc: overview
+
+Encoder Functions Reference
+---------------------------
+
.. kernel-doc:: include/drm/drm_encoder.h
:internal:
@@ -207,46 +213,6 @@ future); drivers that do not wish to provide special handling for
primary planes may make use of the helper functions described in ? to
create and register a primary plane with standard capabilities.
-Encoders (:c:type:`struct drm_encoder <drm_encoder>`)
------------------------------------------------------
-
-An encoder takes pixel data from a CRTC and converts it to a format
-suitable for any attached connectors. On some devices, it may be
-possible to have a CRTC send data to more than one encoder. In that
-case, both encoders would receive data from the same scanout buffer,
-resulting in a "cloned" display configuration across the connectors
-attached to each encoder.
-
-Encoder Initialization
-~~~~~~~~~~~~~~~~~~~~~~
-
-As for CRTCs, a KMS driver must create, initialize and register at least
-one :c:type:`struct drm_encoder <drm_encoder>` instance. The
-instance is allocated and zeroed by the driver, possibly as part of a
-larger structure.
-
-Drivers must initialize the :c:type:`struct drm_encoder
-<drm_encoder>` possible_crtcs and possible_clones fields before
-registering the encoder. Both fields are bitmasks of respectively the
-CRTCs that the encoder can be connected to, and sibling encoders
-candidate for cloning.
-
-After being initialized, the encoder must be registered with a call to
-:c:func:`drm_encoder_init()`. The function takes a pointer to the
-encoder functions and an encoder type. Supported types are
-
-- DRM_MODE_ENCODER_DAC for VGA and analog on DVI-I/DVI-A
-- DRM_MODE_ENCODER_TMDS for DVI, HDMI and (embedded) DisplayPort
-- DRM_MODE_ENCODER_LVDS for display panels
-- DRM_MODE_ENCODER_TVDAC for TV output (Composite, S-Video,
- Component, SCART)
-- DRM_MODE_ENCODER_VIRTUAL for virtual machine displays
-
-Encoders must be attached to a CRTC to be used. DRM drivers leave
-encoders unattached at initialization time. Applications (or the fbdev
-compatibility layer when implemented) are responsible for attaching the
-encoders they want to use to a CRTC.
-
Cleanup
-------
diff --git a/drivers/gpu/drm/drm_encoder.c b/drivers/gpu/drm/drm_encoder.c
index bce781b7bb5f..977d8cad9321 100644
--- a/drivers/gpu/drm/drm_encoder.c
+++ b/drivers/gpu/drm/drm_encoder.c
@@ -26,6 +26,29 @@
#include "drm_crtc_internal.h"
+/**
+ * DOC: overview
+ *
+ * Encoders represent the connecting element between the CRTC (as the overall
+ * pixel pipeline, represented by struct &drm_crtc) and the connectors (as the
+ * generic sink entity, represented by struct &drm_connector). Encoders are
+ * objects exposed to userspace, originally to allow userspace to infer cloning
+ * and connector/CRTC restrictions. Unfortunately almost all drivers get this
+ * wrong, making the uabi pretty much useless. On top of that the exposed
+ * restrictions are too simple for todays hardware, and the recommend way to
+ * infer restrictions is by using the DRM_MODE_ATOMIC_TEST_ONLY flag for the
+ * atomic IOCTL.
+ *
+ * Otherwise encoders aren't used in the uapi at all (any modeset request from
+ * userspace directly connects a connector with a CRTC), drivers are therefore
+ * free to use them however they wish. Modeset helper libraries make strong use
+ * of encoders to facilitate code sharing. But for more complex settings it is
+ * usually better to move shared code into a separate &drm_bridge, which also
+ * doesn't have any issues with being exposed to userspace.
+ *
+ * Encoders are initialized with drm_encoder_init() and cleaned up using
+ * drm_encoder_cleanup().
+ */
static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
{ DRM_MODE_ENCODER_NONE, "None" },
{ DRM_MODE_ENCODER_DAC, "DAC" },
@@ -71,8 +94,9 @@ void drm_encoder_unregister_all(struct drm_device *dev)
* @encoder_type: user visible type of the encoder
* @name: printf style format string for the encoder name, or NULL for default name
*
- * Initialises a preallocated encoder. Encoder should be
- * subclassed as part of driver encoder objects.
+ * Initialises a preallocated encoder. Encoder should be subclassed as part of
+ * driver encoder objects. At driver unload time drm_encoder_cleanup() should be
+ * called from the driver's destroy hook in &drm_encoder_funcs.
*
* Returns:
* Zero on success, error code on failure.
@@ -176,19 +200,6 @@ static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
return encoder->crtc;
}
-/**
- * drm_mode_getencoder - get encoder configuration
- * @dev: drm device for the ioctl
- * @data: data pointer for the ioctl
- * @file_priv: drm file for the ioctl call
- *
- * Construct a encoder configuration structure to return to the user.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
int drm_mode_getencoder(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
diff --git a/include/drm/drm_encoder.h b/include/drm/drm_encoder.h
index 2712fd1a686b..b049748b2514 100644
--- a/include/drm/drm_encoder.h
+++ b/include/drm/drm_encoder.h
@@ -84,9 +84,6 @@ struct drm_encoder_funcs {
* @head: list management
* @base: base KMS object
* @name: human readable name, can be overwritten by the driver
- * @encoder_type: one of the DRM_MODE_ENCODER_<foo> types in drm_mode.h
- * @possible_crtcs: bitmask of potential CRTC bindings
- * @possible_clones: bitmask of potential sibling encoders for cloning
* @crtc: currently bound CRTC
* @bridge: bridge associated to the encoder
* @funcs: control functions
@@ -101,6 +98,31 @@ struct drm_encoder {
struct drm_mode_object base;
char *name;
+ /**
+ * @encoder_type:
+ *
+ * One of the DRM_MODE_ENCODER_<foo> types in drm_mode.h. The following
+ * encoder types are defined thus far:
+ *
+ * - DRM_MODE_ENCODER_DAC for VGA and analog on DVI-I/DVI-A.
+ *
+ * - DRM_MODE_ENCODER_TMDS for DVI, HDMI and (embedded) DisplayPort.
+ *
+ * - DRM_MODE_ENCODER_LVDS for display panels, or in general any panel
+ * with a proprietary parallel connector.
+ *
+ * - DRM_MODE_ENCODER_TVDAC for TV output (Composite, S-Video,
+ * Component, SCART).
+ *
+ * - DRM_MODE_ENCODER_VIRTUAL for virtual machine displays
+ *
+ * - DRM_MODE_ENCODER_DSI for panels connected using the DSI serial bus.
+ *
+ * - DRM_MODE_ENCODER_DPI for panels connected using the DPI parallel bus.
+ *
+ * - DRM_MODE_ENCODER_DPMST for special fake encoders used to allow
+ * mutliple DP MST streams to share one physical encoder.
+ */
int encoder_type;
/**
@@ -109,7 +131,34 @@ struct drm_encoder {
*/
unsigned index;
+ /**
+ * @possible_crtcs: Bitmask of potential CRTC bindings, using
+ * drm_crtc_index() as the index into the bitfield. The driver must set
+ * the bits for all &drm_crtc objects this encoder can be connected to
+ * before calling drm_encoder_init().
+ *
+ * In reality almost every driver gets this wrong.
+ *
+ * Note that since CRTC objects can't be hotplugged the assigned indices
+ * are stable and hence known before registering all objects.
+ */
uint32_t possible_crtcs;
+
+ /**
+ * @possible_clones: Bitmask of potential sibling encoders for cloning,
+ * using drm_encoder_index() as the index into the bitfield. The driver
+ * must set the bits for all &drm_encoder objects which can clone a
+ * &drm_crtc together with this encoder before calling
+ * drm_encoder_init(). Drivers should set the bit representing the
+ * encoder itself, too. Cloning bits should be set such that when two
+ * encoders can be used in a cloned configuration, they both should have
+ * each another bits set.
+ *
+ * In reality almost every driver gets this wrong.
+ *
+ * Note that since encoder objects can't be hotplugged the assigned indices
+ * are stable and hence known before registering all objects.
+ */
uint32_t possible_clones;
struct drm_crtc *crtc;
@@ -146,7 +195,7 @@ static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc);
* @encoder: encoder to test
* @crtc: crtc to test
*
- * Return false if @encoder can't be driven by @crtc, true otherwise.
+ * Returns false if @encoder can't be driven by @crtc, true otherwise.
*/
static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
struct drm_crtc *crtc)
@@ -154,6 +203,14 @@ static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
}
+/**
+ * drm_encoder_find - find a &drm_encoder
+ * @dev: DRM device
+ * @id: encoder id
+ *
+ * Returns the encoder with @id, NULL if it doesn't exist. Simple wrapper around
+ * drm_mode_object_find().
+ */
static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev,
uint32_t id)
{
--
2.8.1
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [PATCH 3/9] drm: Extract drm_mode_object.[hc]
2016-08-17 20:55 [PATCH 1/9] drm: Extract drm_encoder.[hc] Daniel Vetter
2016-08-17 20:55 ` [PATCH 2/9] drm/doc: Polish kerneldoc for encoders Daniel Vetter
@ 2016-08-17 20:56 ` Daniel Vetter
2016-08-25 12:25 ` Archit Taneja
2016-08-17 20:56 ` [PATCH 4/9] drm: Remove drm_mode_object->atomic_count Daniel Vetter
` (7 subsequent siblings)
9 siblings, 1 reply; 24+ messages in thread
From: Daniel Vetter @ 2016-08-17 20:56 UTC (permalink / raw)
To: DRI Development; +Cc: Daniel Vetter, Intel Graphics Development, Daniel Vetter
Just for the struct drm_mode_object base class. The header file was
already partially extracted to help untangle the include loops.
v2:
- Also move the generic get/set property ioctls. At first this seemed
like a bad idea since it requires making drm_mode_crtc_set_obj_prop
non-static. But eventually that will get split away too (like
the connector version already is) for both crtc and planes. Hence I
reconsidered.
- drm_mode_object.[hc] instead of drm_modeset.[hc], which requires
renaming the drm_modeset.h header I already started building up.
This is more consistent (matches the name of the main structure),
and I want to be able to use drm_modeset.[hc] for the basic modeset
init/cleanup functionality like drm_mode_config_init.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
---
Documentation/gpu/drm-kms.rst | 9 +
drivers/gpu/drm/Makefile | 2 +-
drivers/gpu/drm/drm_crtc.c | 413 +---------------------------------
drivers/gpu/drm/drm_crtc_internal.h | 52 +++--
drivers/gpu/drm/drm_mode_object.c | 435 ++++++++++++++++++++++++++++++++++++
include/drm/drm_connector.h | 2 +-
include/drm/drm_crtc.h | 12 +-
include/drm/drm_encoder.h | 2 +-
include/drm/drm_framebuffer.h | 2 +-
include/drm/drm_mode_object.h | 80 +++++++
include/drm/drm_modes.h | 2 +-
include/drm/drm_modeset.h | 70 ------
12 files changed, 562 insertions(+), 519 deletions(-)
create mode 100644 drivers/gpu/drm/drm_mode_object.c
create mode 100644 include/drm/drm_mode_object.h
delete mode 100644 include/drm/drm_modeset.h
diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
index 47c2835b7c2d..b164472f2157 100644
--- a/Documentation/gpu/drm-kms.rst
+++ b/Documentation/gpu/drm-kms.rst
@@ -15,6 +15,15 @@ be setup by initializing the following fields.
- struct drm_mode_config_funcs \*funcs;
Mode setting functions.
+Modeset Base Object Abstraction
+===============================
+
+.. kernel-doc:: include/drm/drm_mode_object.h
+ :internal:
+
+.. kernel-doc:: drivers/gpu/drm/drm_mode_object.c
+ :export:
+
KMS Data Structures
===================
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index efdb4176230f..59979f3f3648 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -14,7 +14,7 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \
drm_rect.o drm_vma_manager.o drm_flip_work.o \
drm_modeset_lock.o drm_atomic.o drm_bridge.o \
drm_framebuffer.o drm_connector.o drm_blend.o \
- drm_encoder.o
+ drm_encoder.o drm_mode_object.o
drm-$(CONFIG_COMPAT) += drm_ioc32.o
drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index f89711b16d3e..d7f68ec049d1 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -57,162 +57,6 @@ static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
/*
* Optional properties
*/
-/*
- * Internal function to assign a slot in the object idr and optionally
- * register the object into the idr.
- */
-int drm_mode_object_get_reg(struct drm_device *dev,
- struct drm_mode_object *obj,
- uint32_t obj_type,
- bool register_obj,
- void (*obj_free_cb)(struct kref *kref))
-{
- int ret;
-
- mutex_lock(&dev->mode_config.idr_mutex);
- ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
- if (ret >= 0) {
- /*
- * Set up the object linking under the protection of the idr
- * lock so that other users can't see inconsistent state.
- */
- obj->id = ret;
- obj->type = obj_type;
- if (obj_free_cb) {
- obj->free_cb = obj_free_cb;
- kref_init(&obj->refcount);
- }
- }
- mutex_unlock(&dev->mode_config.idr_mutex);
-
- return ret < 0 ? ret : 0;
-}
-
-/**
- * drm_mode_object_get - allocate a new modeset identifier
- * @dev: DRM device
- * @obj: object pointer, used to generate unique ID
- * @obj_type: object type
- *
- * Create a unique identifier based on @ptr in @dev's identifier space. Used
- * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
- * modeset identifiers are _not_ reference counted. Hence don't use this for
- * reference counted modeset objects like framebuffers.
- *
- * Returns:
- * Zero on success, error code on failure.
- */
-int drm_mode_object_get(struct drm_device *dev,
- struct drm_mode_object *obj, uint32_t obj_type)
-{
- return drm_mode_object_get_reg(dev, obj, obj_type, true, NULL);
-}
-
-void drm_mode_object_register(struct drm_device *dev,
- struct drm_mode_object *obj)
-{
- mutex_lock(&dev->mode_config.idr_mutex);
- idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
- mutex_unlock(&dev->mode_config.idr_mutex);
-}
-
-/**
- * drm_mode_object_unregister - free a modeset identifer
- * @dev: DRM device
- * @object: object to free
- *
- * Free @id from @dev's unique identifier pool.
- * This function can be called multiple times, and guards against
- * multiple removals.
- * These modeset identifiers are _not_ reference counted. Hence don't use this
- * for reference counted modeset objects like framebuffers.
- */
-void drm_mode_object_unregister(struct drm_device *dev,
- struct drm_mode_object *object)
-{
- mutex_lock(&dev->mode_config.idr_mutex);
- if (object->id) {
- idr_remove(&dev->mode_config.crtc_idr, object->id);
- object->id = 0;
- }
- mutex_unlock(&dev->mode_config.idr_mutex);
-}
-
-struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
- uint32_t id, uint32_t type)
-{
- struct drm_mode_object *obj = NULL;
-
- mutex_lock(&dev->mode_config.idr_mutex);
- obj = idr_find(&dev->mode_config.crtc_idr, id);
- if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
- obj = NULL;
- if (obj && obj->id != id)
- obj = NULL;
-
- if (obj && obj->free_cb) {
- if (!kref_get_unless_zero(&obj->refcount))
- obj = NULL;
- }
- mutex_unlock(&dev->mode_config.idr_mutex);
-
- return obj;
-}
-
-/**
- * drm_mode_object_find - look up a drm object with static lifetime
- * @dev: drm device
- * @id: id of the mode object
- * @type: type of the mode object
- *
- * This function is used to look up a modeset object. It will acquire a
- * reference for reference counted objects. This reference must be dropped again
- * by callind drm_mode_object_unreference().
- */
-struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
- uint32_t id, uint32_t type)
-{
- struct drm_mode_object *obj = NULL;
-
- obj = __drm_mode_object_find(dev, id, type);
- return obj;
-}
-EXPORT_SYMBOL(drm_mode_object_find);
-
-/**
- * drm_mode_object_unreference - decr the object refcnt
- * @obj: mode_object
- *
- * This functions decrements the object's refcount if it is a refcounted modeset
- * object. It is a no-op on any other object. This is used to drop references
- * acquired with drm_mode_object_reference().
- */
-void drm_mode_object_unreference(struct drm_mode_object *obj)
-{
- if (obj->free_cb) {
- DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
- kref_put(&obj->refcount, obj->free_cb);
- }
-}
-EXPORT_SYMBOL(drm_mode_object_unreference);
-
-/**
- * drm_mode_object_reference - incr the object refcnt
- * @obj: mode_object
- *
- * This functions increments the object's refcount if it is a refcounted modeset
- * object. It is a no-op on any other object. References should be dropped again
- * by calling drm_mode_object_unreference().
- */
-void drm_mode_object_reference(struct drm_mode_object *obj)
-{
- if (obj->free_cb) {
- DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
- kref_get(&obj->refcount);
- }
-}
-EXPORT_SYMBOL(drm_mode_object_reference);
-
/**
* drm_crtc_force_disable - Forcibly turn off a CRTC
* @crtc: CRTC to turn off
@@ -1005,45 +849,6 @@ int drm_mode_getcrtc(struct drm_device *dev,
return 0;
}
-/* helper for getconnector and getproperties ioctls */
-int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
- uint32_t __user *prop_ptr,
- uint64_t __user *prop_values,
- uint32_t *arg_count_props)
-{
- int props_count;
- int i, ret, copied;
-
- props_count = obj->properties->count;
- if (!atomic)
- props_count -= obj->properties->atomic_count;
-
- if ((*arg_count_props >= props_count) && props_count) {
- for (i = 0, copied = 0; copied < props_count; i++) {
- struct drm_property *prop = obj->properties->properties[i];
- uint64_t val;
-
- if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
- continue;
-
- ret = drm_object_property_get_value(obj, prop, &val);
- if (ret)
- return ret;
-
- if (put_user(prop->base.id, prop_ptr + copied))
- return -EFAULT;
-
- if (put_user(val, prop_values + copied))
- return -EFAULT;
-
- copied++;
- }
- }
- *arg_count_props = props_count;
-
- return 0;
-}
-
/**
* drm_mode_getplane_res - enumerate all plane resources
* @dev: DRM device
@@ -2286,105 +2091,6 @@ void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
EXPORT_SYMBOL(drm_property_destroy);
/**
- * drm_object_attach_property - attach a property to a modeset object
- * @obj: drm modeset object
- * @property: property to attach
- * @init_val: initial value of the property
- *
- * This attaches the given property to the modeset object with the given initial
- * value. Currently this function cannot fail since the properties are stored in
- * a statically sized array.
- */
-void drm_object_attach_property(struct drm_mode_object *obj,
- struct drm_property *property,
- uint64_t init_val)
-{
- int count = obj->properties->count;
-
- if (count == DRM_OBJECT_MAX_PROPERTY) {
- WARN(1, "Failed to attach object property (type: 0x%x). Please "
- "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
- "you see this message on the same object type.\n",
- obj->type);
- return;
- }
-
- obj->properties->properties[count] = property;
- obj->properties->values[count] = init_val;
- obj->properties->count++;
- if (property->flags & DRM_MODE_PROP_ATOMIC)
- obj->properties->atomic_count++;
-}
-EXPORT_SYMBOL(drm_object_attach_property);
-
-/**
- * drm_object_property_set_value - set the value of a property
- * @obj: drm mode object to set property value for
- * @property: property to set
- * @val: value the property should be set to
- *
- * This functions sets a given property on a given object. This function only
- * changes the software state of the property, it does not call into the
- * driver's ->set_property callback.
- *
- * Returns:
- * Zero on success, error code on failure.
- */
-int drm_object_property_set_value(struct drm_mode_object *obj,
- struct drm_property *property, uint64_t val)
-{
- int i;
-
- for (i = 0; i < obj->properties->count; i++) {
- if (obj->properties->properties[i] == property) {
- obj->properties->values[i] = val;
- return 0;
- }
- }
-
- return -EINVAL;
-}
-EXPORT_SYMBOL(drm_object_property_set_value);
-
-/**
- * drm_object_property_get_value - retrieve the value of a property
- * @obj: drm mode object to get property value from
- * @property: property to retrieve
- * @val: storage for the property value
- *
- * This function retrieves the softare state of the given property for the given
- * property. Since there is no driver callback to retrieve the current property
- * value this might be out of sync with the hardware, depending upon the driver
- * and property.
- *
- * Returns:
- * Zero on success, error code on failure.
- */
-int drm_object_property_get_value(struct drm_mode_object *obj,
- struct drm_property *property, uint64_t *val)
-{
- int i;
-
- /* read-only properties bypass atomic mechanism and still store
- * their value in obj->properties->values[].. mostly to avoid
- * having to deal w/ EDID and similar props in atomic paths:
- */
- if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
- !(property->flags & DRM_MODE_PROP_IMMUTABLE))
- return drm_atomic_get_property(obj, property, val);
-
- for (i = 0; i < obj->properties->count; i++) {
- if (obj->properties->properties[i] == property) {
- *val = obj->properties->values[i];
- return 0;
- }
- }
-
- return -EINVAL;
-}
-EXPORT_SYMBOL(drm_object_property_get_value);
-
-/**
* drm_mode_getproperty_ioctl - get the property metadata
* @dev: DRM device
* @data: ioctl data
@@ -2929,9 +2635,9 @@ void drm_property_change_valid_put(struct drm_property *property,
drm_property_unreference_blob(obj_to_blob(ref));
}
-static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
- struct drm_property *property,
- uint64_t value)
+int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
+ struct drm_property *property,
+ uint64_t value)
{
int ret = -EINVAL;
struct drm_crtc *crtc = obj_to_crtc(obj);
@@ -2974,119 +2680,6 @@ int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
/**
- * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * This function retrieves the current value for an object's property. Compared
- * to the connector specific ioctl this one is extended to also work on crtc and
- * plane objects.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
-int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_mode_obj_get_properties *arg = data;
- struct drm_mode_object *obj;
- int ret = 0;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- drm_modeset_lock_all(dev);
-
- obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
- if (!obj) {
- ret = -ENOENT;
- goto out;
- }
- if (!obj->properties) {
- ret = -EINVAL;
- goto out_unref;
- }
-
- ret = drm_mode_object_get_properties(obj, file_priv->atomic,
- (uint32_t __user *)(unsigned long)(arg->props_ptr),
- (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
- &arg->count_props);
-
-out_unref:
- drm_mode_object_unreference(obj);
-out:
- drm_modeset_unlock_all(dev);
- return ret;
-}
-
-int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_mode_obj_set_property *arg = data;
- struct drm_mode_object *arg_obj;
- struct drm_mode_object *prop_obj;
- struct drm_property *property;
- int i, ret = -EINVAL;
- struct drm_mode_object *ref;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- drm_modeset_lock_all(dev);
-
- arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
- if (!arg_obj) {
- ret = -ENOENT;
- goto out;
- }
- if (!arg_obj->properties)
- goto out_unref;
-
- for (i = 0; i < arg_obj->properties->count; i++)
- if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
- break;
-
- if (i == arg_obj->properties->count)
- goto out_unref;
-
- prop_obj = drm_mode_object_find(dev, arg->prop_id,
- DRM_MODE_OBJECT_PROPERTY);
- if (!prop_obj) {
- ret = -ENOENT;
- goto out_unref;
- }
- property = obj_to_property(prop_obj);
-
- if (!drm_property_change_valid_get(property, arg->value, &ref))
- goto out_unref;
-
- switch (arg_obj->type) {
- case DRM_MODE_OBJECT_CONNECTOR:
- ret = drm_mode_connector_set_obj_prop(arg_obj, property,
- arg->value);
- break;
- case DRM_MODE_OBJECT_CRTC:
- ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
- break;
- case DRM_MODE_OBJECT_PLANE:
- ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
- property, arg->value);
- break;
- }
-
- drm_property_change_valid_put(property, ref);
-
-out_unref:
- drm_mode_object_unreference(arg_obj);
-out:
- drm_modeset_unlock_all(dev);
- return ret;
-}
-
-/**
* drm_mode_crtc_set_gamma_size - set the gamma table size
* @crtc: CRTC to set the gamma table size for
* @gamma_size: size of the gamma table
diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
index 69f2b21ddad3..26ea7b5e3684 100644
--- a/drivers/gpu/drm/drm_crtc_internal.h
+++ b/drivers/gpu/drm/drm_crtc_internal.h
@@ -33,29 +33,14 @@
/* drm_crtc.c */
-int drm_mode_object_get_reg(struct drm_device *dev,
- struct drm_mode_object *obj,
- uint32_t obj_type,
- bool register_obj,
- void (*obj_free_cb)(struct kref *kref));
-void drm_mode_object_register(struct drm_device *dev,
- struct drm_mode_object *obj);
-int drm_mode_object_get(struct drm_device *dev,
- struct drm_mode_object *obj, uint32_t obj_type);
-struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
- uint32_t id, uint32_t type);
-void drm_mode_object_unregister(struct drm_device *dev,
- struct drm_mode_object *object);
-int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
- uint32_t __user *prop_ptr,
- uint64_t __user *prop_values,
- uint32_t *arg_count_props);
+int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
+ struct drm_property *property,
+ uint64_t value);
bool drm_property_change_valid_get(struct drm_property *property,
uint64_t value,
struct drm_mode_object **ref);
void drm_property_change_valid_put(struct drm_property *property,
struct drm_mode_object *ref);
-
int drm_plane_check_pixel_format(const struct drm_plane *plane,
u32 format);
int drm_crtc_check_viewport(const struct drm_crtc *crtc,
@@ -76,11 +61,6 @@ int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
/* IOCTLs */
-int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv);
-int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv);
-
int drm_mode_getresources(struct drm_device *dev,
void *data, struct drm_file *file_priv);
int drm_mode_getplane_res(struct drm_device *dev, void *data,
@@ -113,6 +93,32 @@ int drm_mode_gamma_set_ioctl(struct drm_device *dev,
int drm_mode_page_flip_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
+/* drm_mode_object.c */
+int drm_mode_object_get_reg(struct drm_device *dev,
+ struct drm_mode_object *obj,
+ uint32_t obj_type,
+ bool register_obj,
+ void (*obj_free_cb)(struct kref *kref));
+void drm_mode_object_register(struct drm_device *dev,
+ struct drm_mode_object *obj);
+int drm_mode_object_get(struct drm_device *dev,
+ struct drm_mode_object *obj, uint32_t obj_type);
+struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
+ uint32_t id, uint32_t type);
+void drm_mode_object_unregister(struct drm_device *dev,
+ struct drm_mode_object *object);
+int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
+ uint32_t __user *prop_ptr,
+ uint64_t __user *prop_values,
+ uint32_t *arg_count_props);
+
+/* IOCTL */
+
+int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+
/* drm_encoder.c */
int drm_encoder_register_all(struct drm_device *dev);
void drm_encoder_unregister_all(struct drm_device *dev);
diff --git a/drivers/gpu/drm/drm_mode_object.c b/drivers/gpu/drm/drm_mode_object.c
new file mode 100644
index 000000000000..cef9104e8285
--- /dev/null
+++ b/drivers/gpu/drm/drm_mode_object.c
@@ -0,0 +1,435 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <linux/export.h>
+#include <drm/drmP.h>
+#include <drm/drm_mode_object.h>
+
+#include "drm_crtc_internal.h"
+
+/*
+ * Internal function to assign a slot in the object idr and optionally
+ * register the object into the idr.
+ */
+int drm_mode_object_get_reg(struct drm_device *dev,
+ struct drm_mode_object *obj,
+ uint32_t obj_type,
+ bool register_obj,
+ void (*obj_free_cb)(struct kref *kref))
+{
+ int ret;
+
+ mutex_lock(&dev->mode_config.idr_mutex);
+ ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
+ if (ret >= 0) {
+ /*
+ * Set up the object linking under the protection of the idr
+ * lock so that other users can't see inconsistent state.
+ */
+ obj->id = ret;
+ obj->type = obj_type;
+ if (obj_free_cb) {
+ obj->free_cb = obj_free_cb;
+ kref_init(&obj->refcount);
+ }
+ }
+ mutex_unlock(&dev->mode_config.idr_mutex);
+
+ return ret < 0 ? ret : 0;
+}
+
+/**
+ * drm_mode_object_get - allocate a new modeset identifier
+ * @dev: DRM device
+ * @obj: object pointer, used to generate unique ID
+ * @obj_type: object type
+ *
+ * Create a unique identifier based on @ptr in @dev's identifier space. Used
+ * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
+ * modeset identifiers are _not_ reference counted. Hence don't use this for
+ * reference counted modeset objects like framebuffers.
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int drm_mode_object_get(struct drm_device *dev,
+ struct drm_mode_object *obj, uint32_t obj_type)
+{
+ return drm_mode_object_get_reg(dev, obj, obj_type, true, NULL);
+}
+
+void drm_mode_object_register(struct drm_device *dev,
+ struct drm_mode_object *obj)
+{
+ mutex_lock(&dev->mode_config.idr_mutex);
+ idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
+ mutex_unlock(&dev->mode_config.idr_mutex);
+}
+
+/**
+ * drm_mode_object_unregister - free a modeset identifer
+ * @dev: DRM device
+ * @object: object to free
+ *
+ * Free @id from @dev's unique identifier pool.
+ * This function can be called multiple times, and guards against
+ * multiple removals.
+ * These modeset identifiers are _not_ reference counted. Hence don't use this
+ * for reference counted modeset objects like framebuffers.
+ */
+void drm_mode_object_unregister(struct drm_device *dev,
+ struct drm_mode_object *object)
+{
+ mutex_lock(&dev->mode_config.idr_mutex);
+ if (object->id) {
+ idr_remove(&dev->mode_config.crtc_idr, object->id);
+ object->id = 0;
+ }
+ mutex_unlock(&dev->mode_config.idr_mutex);
+}
+
+struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
+ uint32_t id, uint32_t type)
+{
+ struct drm_mode_object *obj = NULL;
+
+ mutex_lock(&dev->mode_config.idr_mutex);
+ obj = idr_find(&dev->mode_config.crtc_idr, id);
+ if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
+ obj = NULL;
+ if (obj && obj->id != id)
+ obj = NULL;
+
+ if (obj && obj->free_cb) {
+ if (!kref_get_unless_zero(&obj->refcount))
+ obj = NULL;
+ }
+ mutex_unlock(&dev->mode_config.idr_mutex);
+
+ return obj;
+}
+
+/**
+ * drm_mode_object_find - look up a drm object with static lifetime
+ * @dev: drm device
+ * @id: id of the mode object
+ * @type: type of the mode object
+ *
+ * This function is used to look up a modeset object. It will acquire a
+ * reference for reference counted objects. This reference must be dropped again
+ * by callind drm_mode_object_unreference().
+ */
+struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
+ uint32_t id, uint32_t type)
+{
+ struct drm_mode_object *obj = NULL;
+
+ obj = __drm_mode_object_find(dev, id, type);
+ return obj;
+}
+EXPORT_SYMBOL(drm_mode_object_find);
+
+/**
+ * drm_mode_object_unreference - decr the object refcnt
+ * @obj: mode_object
+ *
+ * This functions decrements the object's refcount if it is a refcounted modeset
+ * object. It is a no-op on any other object. This is used to drop references
+ * acquired with drm_mode_object_reference().
+ */
+void drm_mode_object_unreference(struct drm_mode_object *obj)
+{
+ if (obj->free_cb) {
+ DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
+ kref_put(&obj->refcount, obj->free_cb);
+ }
+}
+EXPORT_SYMBOL(drm_mode_object_unreference);
+
+/**
+ * drm_mode_object_reference - incr the object refcnt
+ * @obj: mode_object
+ *
+ * This functions increments the object's refcount if it is a refcounted modeset
+ * object. It is a no-op on any other object. References should be dropped again
+ * by calling drm_mode_object_unreference().
+ */
+void drm_mode_object_reference(struct drm_mode_object *obj)
+{
+ if (obj->free_cb) {
+ DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
+ kref_get(&obj->refcount);
+ }
+}
+EXPORT_SYMBOL(drm_mode_object_reference);
+
+/**
+ * drm_object_attach_property - attach a property to a modeset object
+ * @obj: drm modeset object
+ * @property: property to attach
+ * @init_val: initial value of the property
+ *
+ * This attaches the given property to the modeset object with the given initial
+ * value. Currently this function cannot fail since the properties are stored in
+ * a statically sized array.
+ */
+void drm_object_attach_property(struct drm_mode_object *obj,
+ struct drm_property *property,
+ uint64_t init_val)
+{
+ int count = obj->properties->count;
+
+ if (count == DRM_OBJECT_MAX_PROPERTY) {
+ WARN(1, "Failed to attach object property (type: 0x%x). Please "
+ "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
+ "you see this message on the same object type.\n",
+ obj->type);
+ return;
+ }
+
+ obj->properties->properties[count] = property;
+ obj->properties->values[count] = init_val;
+ obj->properties->count++;
+ if (property->flags & DRM_MODE_PROP_ATOMIC)
+ obj->properties->atomic_count++;
+}
+EXPORT_SYMBOL(drm_object_attach_property);
+
+/**
+ * drm_object_property_set_value - set the value of a property
+ * @obj: drm mode object to set property value for
+ * @property: property to set
+ * @val: value the property should be set to
+ *
+ * This functions sets a given property on a given object. This function only
+ * changes the software state of the property, it does not call into the
+ * driver's ->set_property callback.
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int drm_object_property_set_value(struct drm_mode_object *obj,
+ struct drm_property *property, uint64_t val)
+{
+ int i;
+
+ for (i = 0; i < obj->properties->count; i++) {
+ if (obj->properties->properties[i] == property) {
+ obj->properties->values[i] = val;
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
+EXPORT_SYMBOL(drm_object_property_set_value);
+
+/**
+ * drm_object_property_get_value - retrieve the value of a property
+ * @obj: drm mode object to get property value from
+ * @property: property to retrieve
+ * @val: storage for the property value
+ *
+ * This function retrieves the softare state of the given property for the given
+ * property. Since there is no driver callback to retrieve the current property
+ * value this might be out of sync with the hardware, depending upon the driver
+ * and property.
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int drm_object_property_get_value(struct drm_mode_object *obj,
+ struct drm_property *property, uint64_t *val)
+{
+ int i;
+
+ /* read-only properties bypass atomic mechanism and still store
+ * their value in obj->properties->values[].. mostly to avoid
+ * having to deal w/ EDID and similar props in atomic paths:
+ */
+ if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
+ !(property->flags & DRM_MODE_PROP_IMMUTABLE))
+ return drm_atomic_get_property(obj, property, val);
+
+ for (i = 0; i < obj->properties->count; i++) {
+ if (obj->properties->properties[i] == property) {
+ *val = obj->properties->values[i];
+ return 0;
+ }
+
+ }
+
+ return -EINVAL;
+}
+EXPORT_SYMBOL(drm_object_property_get_value);
+
+/* helper for getconnector and getproperties ioctls */
+int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
+ uint32_t __user *prop_ptr,
+ uint64_t __user *prop_values,
+ uint32_t *arg_count_props)
+{
+ int props_count;
+ int i, ret, copied;
+
+ props_count = obj->properties->count;
+ if (!atomic)
+ props_count -= obj->properties->atomic_count;
+
+ if ((*arg_count_props >= props_count) && props_count) {
+ for (i = 0, copied = 0; copied < props_count; i++) {
+ struct drm_property *prop = obj->properties->properties[i];
+ uint64_t val;
+
+ if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
+ continue;
+
+ ret = drm_object_property_get_value(obj, prop, &val);
+ if (ret)
+ return ret;
+
+ if (put_user(prop->base.id, prop_ptr + copied))
+ return -EFAULT;
+
+ if (put_user(val, prop_values + copied))
+ return -EFAULT;
+
+ copied++;
+ }
+ }
+ *arg_count_props = props_count;
+
+ return 0;
+}
+
+/**
+ * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
+ * @dev: DRM device
+ * @data: ioctl data
+ * @file_priv: DRM file info
+ *
+ * This function retrieves the current value for an object's property. Compared
+ * to the connector specific ioctl this one is extended to also work on crtc and
+ * plane objects.
+ *
+ * Called by the user via ioctl.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_mode_obj_get_properties *arg = data;
+ struct drm_mode_object *obj;
+ int ret = 0;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ drm_modeset_lock_all(dev);
+
+ obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
+ if (!obj) {
+ ret = -ENOENT;
+ goto out;
+ }
+ if (!obj->properties) {
+ ret = -EINVAL;
+ goto out_unref;
+ }
+
+ ret = drm_mode_object_get_properties(obj, file_priv->atomic,
+ (uint32_t __user *)(unsigned long)(arg->props_ptr),
+ (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
+ &arg->count_props);
+
+out_unref:
+ drm_mode_object_unreference(obj);
+out:
+ drm_modeset_unlock_all(dev);
+ return ret;
+}
+
+int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_mode_obj_set_property *arg = data;
+ struct drm_mode_object *arg_obj;
+ struct drm_mode_object *prop_obj;
+ struct drm_property *property;
+ int i, ret = -EINVAL;
+ struct drm_mode_object *ref;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ drm_modeset_lock_all(dev);
+
+ arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
+ if (!arg_obj) {
+ ret = -ENOENT;
+ goto out;
+ }
+ if (!arg_obj->properties)
+ goto out_unref;
+
+ for (i = 0; i < arg_obj->properties->count; i++)
+ if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
+ break;
+
+ if (i == arg_obj->properties->count)
+ goto out_unref;
+
+ prop_obj = drm_mode_object_find(dev, arg->prop_id,
+ DRM_MODE_OBJECT_PROPERTY);
+ if (!prop_obj) {
+ ret = -ENOENT;
+ goto out_unref;
+ }
+ property = obj_to_property(prop_obj);
+
+ if (!drm_property_change_valid_get(property, arg->value, &ref))
+ goto out_unref;
+
+ switch (arg_obj->type) {
+ case DRM_MODE_OBJECT_CONNECTOR:
+ ret = drm_mode_connector_set_obj_prop(arg_obj, property,
+ arg->value);
+ break;
+ case DRM_MODE_OBJECT_CRTC:
+ ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
+ break;
+ case DRM_MODE_OBJECT_PLANE:
+ ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
+ property, arg->value);
+ break;
+ }
+
+ drm_property_change_valid_put(property, ref);
+
+out_unref:
+ drm_mode_object_unreference(arg_obj);
+out:
+ drm_modeset_unlock_all(dev);
+ return ret;
+}
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index f1576db6c044..66b7d6744dd2 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -25,7 +25,7 @@
#include <linux/list.h>
#include <linux/ctype.h>
-#include <drm/drm_modeset.h>
+#include <drm/drm_mode_object.h>
struct drm_connector_helper_funcs;
struct drm_device;
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 61d81fb3c8fc..1abcc182e92b 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -36,7 +36,7 @@
#include <uapi/drm/drm_fourcc.h>
#include <drm/drm_modeset_lock.h>
#include <drm/drm_rect.h>
-#include <drm/drm_modeset.h>
+#include <drm/drm_mode_object.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_modes.h>
#include <drm/drm_connector.h>
@@ -2093,16 +2093,6 @@ static inline bool drm_property_type_is(struct drm_property *property,
return property->flags & type;
}
-extern int drm_object_property_set_value(struct drm_mode_object *obj,
- struct drm_property *property,
- uint64_t val);
-extern int drm_object_property_get_value(struct drm_mode_object *obj,
- struct drm_property *property,
- uint64_t *value);
-
-extern void drm_object_attach_property(struct drm_mode_object *obj,
- struct drm_property *property,
- uint64_t init_val);
extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
const char *name, int num_values);
extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
diff --git a/include/drm/drm_encoder.h b/include/drm/drm_encoder.h
index b049748b2514..4f066eedd039 100644
--- a/include/drm/drm_encoder.h
+++ b/include/drm/drm_encoder.h
@@ -25,7 +25,7 @@
#include <linux/list.h>
#include <linux/ctype.h>
-#include <drm/drm_modeset.h>
+#include <drm/drm_mode_object.h>
/**
* struct drm_encoder_funcs - encoder controls
diff --git a/include/drm/drm_framebuffer.h b/include/drm/drm_framebuffer.h
index 50deb40d3bfd..b2554c50a903 100644
--- a/include/drm/drm_framebuffer.h
+++ b/include/drm/drm_framebuffer.h
@@ -25,7 +25,7 @@
#include <linux/list.h>
#include <linux/ctype.h>
-#include <drm/drm_modeset.h>
+#include <drm/drm_mode_object.h>
struct drm_framebuffer;
struct drm_file;
diff --git a/include/drm/drm_mode_object.h b/include/drm/drm_mode_object.h
new file mode 100644
index 000000000000..c0e4414299f7
--- /dev/null
+++ b/include/drm/drm_mode_object.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef __DRM_MODESET_H__
+#define __DRM_MODESET_H__
+
+#include <linux/kref.h>
+struct drm_object_properties;
+struct drm_property;
+
+struct drm_mode_object {
+ uint32_t id;
+ uint32_t type;
+ struct drm_object_properties *properties;
+ struct kref refcount;
+ void (*free_cb)(struct kref *kref);
+};
+
+#define DRM_OBJECT_MAX_PROPERTY 24
+struct drm_object_properties {
+ int count, atomic_count;
+ /* NOTE: if we ever start dynamically destroying properties (ie.
+ * not at drm_mode_config_cleanup() time), then we'd have to do
+ * a better job of detaching property from mode objects to avoid
+ * dangling property pointers:
+ */
+ struct drm_property *properties[DRM_OBJECT_MAX_PROPERTY];
+ /* do not read/write values directly, but use drm_object_property_get_value()
+ * and drm_object_property_set_value():
+ */
+ uint64_t values[DRM_OBJECT_MAX_PROPERTY];
+};
+
+/* Avoid boilerplate. I'm tired of typing. */
+#define DRM_ENUM_NAME_FN(fnname, list) \
+ const char *fnname(int val) \
+ { \
+ int i; \
+ for (i = 0; i < ARRAY_SIZE(list); i++) { \
+ if (list[i].type == val) \
+ return list[i].name; \
+ } \
+ return "(unknown)"; \
+ }
+
+struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
+ uint32_t id, uint32_t type);
+void drm_mode_object_reference(struct drm_mode_object *obj);
+void drm_mode_object_unreference(struct drm_mode_object *obj);
+
+int drm_object_property_set_value(struct drm_mode_object *obj,
+ struct drm_property *property,
+ uint64_t val);
+int drm_object_property_get_value(struct drm_mode_object *obj,
+ struct drm_property *property,
+ uint64_t *value);
+
+void drm_object_attach_property(struct drm_mode_object *obj,
+ struct drm_property *property,
+ uint64_t init_val);
+#endif
diff --git a/include/drm/drm_modes.h b/include/drm/drm_modes.h
index 1621e9b32330..011f199d3bcf 100644
--- a/include/drm/drm_modes.h
+++ b/include/drm/drm_modes.h
@@ -27,7 +27,7 @@
#ifndef __DRM_MODES_H__
#define __DRM_MODES_H__
-#include <drm/drm_modeset.h>
+#include <drm/drm_mode_object.h>
#include <drm/drm_connector.h>
/*
diff --git a/include/drm/drm_modeset.h b/include/drm/drm_modeset.h
deleted file mode 100644
index fe910d5efe12..000000000000
--- a/include/drm/drm_modeset.h
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * Copyright (c) 2016 Intel Corporation
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that copyright
- * notice and this permission notice appear in supporting documentation, and
- * that the name of the copyright holders not be used in advertising or
- * publicity pertaining to distribution of the software without specific,
- * written prior permission. The copyright holders make no representations
- * about the suitability of this software for any purpose. It is provided "as
- * is" without express or implied warranty.
- *
- * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
- * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
- * OF THIS SOFTWARE.
- */
-
-#ifndef __DRM_MODESET_H__
-#define __DRM_MODESET_H__
-
-#include <linux/kref.h>
-struct drm_object_properties;
-struct drm_property;
-
-struct drm_mode_object {
- uint32_t id;
- uint32_t type;
- struct drm_object_properties *properties;
- struct kref refcount;
- void (*free_cb)(struct kref *kref);
-};
-
-#define DRM_OBJECT_MAX_PROPERTY 24
-struct drm_object_properties {
- int count, atomic_count;
- /* NOTE: if we ever start dynamically destroying properties (ie.
- * not at drm_mode_config_cleanup() time), then we'd have to do
- * a better job of detaching property from mode objects to avoid
- * dangling property pointers:
- */
- struct drm_property *properties[DRM_OBJECT_MAX_PROPERTY];
- /* do not read/write values directly, but use drm_object_property_get_value()
- * and drm_object_property_set_value():
- */
- uint64_t values[DRM_OBJECT_MAX_PROPERTY];
-};
-
-/* Avoid boilerplate. I'm tired of typing. */
-#define DRM_ENUM_NAME_FN(fnname, list) \
- const char *fnname(int val) \
- { \
- int i; \
- for (i = 0; i < ARRAY_SIZE(list); i++) { \
- if (list[i].type == val) \
- return list[i].name; \
- } \
- return "(unknown)"; \
- }
-
-struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
- uint32_t id, uint32_t type);
-void drm_mode_object_reference(struct drm_mode_object *obj);
-void drm_mode_object_unreference(struct drm_mode_object *obj);
-
-#endif
--
2.8.1
_______________________________________________
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https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [PATCH 4/9] drm: Remove drm_mode_object->atomic_count
2016-08-17 20:55 [PATCH 1/9] drm: Extract drm_encoder.[hc] Daniel Vetter
2016-08-17 20:55 ` [PATCH 2/9] drm/doc: Polish kerneldoc for encoders Daniel Vetter
2016-08-17 20:56 ` [PATCH 3/9] drm: Extract drm_mode_object.[hc] Daniel Vetter
@ 2016-08-17 20:56 ` Daniel Vetter
2016-08-25 12:25 ` Archit Taneja
2016-08-17 20:56 ` [PATCH 5/9] drm/doc: Polish docs for drm_mode_object Daniel Vetter
` (6 subsequent siblings)
9 siblings, 1 reply; 24+ messages in thread
From: Daniel Vetter @ 2016-08-17 20:56 UTC (permalink / raw)
To: DRI Development; +Cc: Daniel Vetter, Intel Graphics Development
It's only used in drm_mode_object_get_properties, and we can compute
it there directly with a bit of code shuffling.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
drivers/gpu/drm/drm_mode_object.c | 31 ++++++++++++-------------------
include/drm/drm_mode_object.h | 2 +-
2 files changed, 13 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/drm_mode_object.c b/drivers/gpu/drm/drm_mode_object.c
index cef9104e8285..a92aeed51156 100644
--- a/drivers/gpu/drm/drm_mode_object.c
+++ b/drivers/gpu/drm/drm_mode_object.c
@@ -209,8 +209,6 @@ void drm_object_attach_property(struct drm_mode_object *obj,
obj->properties->properties[count] = property;
obj->properties->values[count] = init_val;
obj->properties->count++;
- if (property->flags & DRM_MODE_PROP_ATOMIC)
- obj->properties->atomic_count++;
}
EXPORT_SYMBOL(drm_object_attach_property);
@@ -288,35 +286,30 @@ int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
uint64_t __user *prop_values,
uint32_t *arg_count_props)
{
- int props_count;
- int i, ret, copied;
+ int i, ret, count;
- props_count = obj->properties->count;
- if (!atomic)
- props_count -= obj->properties->atomic_count;
+ for (i = 0, count = 0; i < obj->properties->count; i++) {
+ struct drm_property *prop = obj->properties->properties[i];
+ uint64_t val;
- if ((*arg_count_props >= props_count) && props_count) {
- for (i = 0, copied = 0; copied < props_count; i++) {
- struct drm_property *prop = obj->properties->properties[i];
- uint64_t val;
-
- if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
- continue;
+ if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
+ continue;
+ if (*arg_count_props > count) {
ret = drm_object_property_get_value(obj, prop, &val);
if (ret)
return ret;
- if (put_user(prop->base.id, prop_ptr + copied))
+ if (put_user(prop->base.id, prop_ptr + count))
return -EFAULT;
- if (put_user(val, prop_values + copied))
+ if (put_user(val, prop_values + count))
return -EFAULT;
-
- copied++;
}
+
+ count++;
}
- *arg_count_props = props_count;
+ *arg_count_props = count;
return 0;
}
diff --git a/include/drm/drm_mode_object.h b/include/drm/drm_mode_object.h
index c0e4414299f7..b8adb6425f2a 100644
--- a/include/drm/drm_mode_object.h
+++ b/include/drm/drm_mode_object.h
@@ -37,7 +37,7 @@ struct drm_mode_object {
#define DRM_OBJECT_MAX_PROPERTY 24
struct drm_object_properties {
- int count, atomic_count;
+ int count;
/* NOTE: if we ever start dynamically destroying properties (ie.
* not at drm_mode_config_cleanup() time), then we'd have to do
* a better job of detaching property from mode objects to avoid
--
2.8.1
_______________________________________________
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Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [PATCH 5/9] drm/doc: Polish docs for drm_mode_object
2016-08-17 20:55 [PATCH 1/9] drm: Extract drm_encoder.[hc] Daniel Vetter
` (2 preceding siblings ...)
2016-08-17 20:56 ` [PATCH 4/9] drm: Remove drm_mode_object->atomic_count Daniel Vetter
@ 2016-08-17 20:56 ` Daniel Vetter
2016-08-25 12:25 ` Archit Taneja
2016-08-17 20:56 ` [PATCH 6/9] drm: move drm_mode_legacy_fb_format to drm_fourcc.c Daniel Vetter
` (5 subsequent siblings)
9 siblings, 1 reply; 24+ messages in thread
From: Daniel Vetter @ 2016-08-17 20:56 UTC (permalink / raw)
To: DRI Development; +Cc: Daniel Vetter, Intel Graphics Development
I figured an overview section here is overkill, and better
to just document the 2 structures themselves well enough.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
drivers/gpu/drm/drm_mode_object.c | 9 +++++++
include/drm/drm_mode_object.h | 50 ++++++++++++++++++++++++++++++++++++---
2 files changed, 56 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_mode_object.c b/drivers/gpu/drm/drm_mode_object.c
index a92aeed51156..a4dd3fa258b4 100644
--- a/drivers/gpu/drm/drm_mode_object.c
+++ b/drivers/gpu/drm/drm_mode_object.c
@@ -222,6 +222,12 @@ EXPORT_SYMBOL(drm_object_attach_property);
* changes the software state of the property, it does not call into the
* driver's ->set_property callback.
*
+ * Note that atomic drivers should not have any need to call this, the core will
+ * ensure consistency of values reported back to userspace through the
+ * appropriate ->atomic_get_property callback. Only legacy drivers should call
+ * this function to update the tracked value (after clamping and other
+ * restrictions have been applied).
+ *
* Returns:
* Zero on success, error code on failure.
*/
@@ -252,6 +258,9 @@ EXPORT_SYMBOL(drm_object_property_set_value);
* value this might be out of sync with the hardware, depending upon the driver
* and property.
*
+ * Atomic drivers should never call this function directly, the core will read
+ * out property values through the various ->atomic_get_property callbacks.
+ *
* Returns:
* Zero on success, error code on failure.
*/
diff --git a/include/drm/drm_mode_object.h b/include/drm/drm_mode_object.h
index b8adb6425f2a..7967ffeda3c4 100644
--- a/include/drm/drm_mode_object.h
+++ b/include/drm/drm_mode_object.h
@@ -27,6 +27,28 @@
struct drm_object_properties;
struct drm_property;
+/**
+ * struct drm_mode_object - base structure for modeset objecst
+ * @id: userspace visible identifier
+ * @type: type of the object, one of DRM_MODE_OBJECT\_\*
+ * @properties: properties attached to this object, including values
+ * @refcount: reference count for objects which with dynamic lifetime
+ * @free_cb: free function callback, only set for objects with dynamic lifetime
+ *
+ * Base structure for modeset objects visible to userspace. Objects can be
+ * looked up using drm_mode_object_find(). Besides basic uapi interface
+ * properties like @id and @type it provides two servies:
+ *
+ * - It tracks attached properties and their values. This is used by &drm_crtc,
+ * &drm_plane and &drm_connector. Properties are attached by calling
+ * drm_object_attach_property() before the object is visible to userspace.
+ *
+ * - For objects with dynamic lifetimes (as indicated by a non-NULL @free_cb) it
+ * provides reference counting through drm_mode_object_reference() and
+ * drm_mode_object_unreference(). This is used by &drm_framebuffer,
+ * &drm_connector and &drm_property_blob. These objects provide specialized
+ * reference counting wrappers.
+ */
struct drm_mode_object {
uint32_t id;
uint32_t type;
@@ -36,16 +58,38 @@ struct drm_mode_object {
};
#define DRM_OBJECT_MAX_PROPERTY 24
+/**
+ * struct drm_object_properties - property tracking for &drm_mode_object
+ */
struct drm_object_properties {
+ /**
+ * @count: number of valid properties, must be less than or equal to
+ * DRM_OBJECT_MAX_PROPERTY.
+ */
+
int count;
- /* NOTE: if we ever start dynamically destroying properties (ie.
+ /**
+ * @properties: Array of pointers to &drm_property.
+ *
+ * NOTE: if we ever start dynamically destroying properties (ie.
* not at drm_mode_config_cleanup() time), then we'd have to do
* a better job of detaching property from mode objects to avoid
* dangling property pointers:
*/
struct drm_property *properties[DRM_OBJECT_MAX_PROPERTY];
- /* do not read/write values directly, but use drm_object_property_get_value()
- * and drm_object_property_set_value():
+
+ /**
+ * @values: Array to store the property values, matching @properties. Do
+ * not read/write values directly, but use
+ * drm_object_property_get_value() and drm_object_property_set_value().
+ *
+ * Note that atomic drivers do not store mutable properties in this
+ * aray, but only the decoded values in the corresponding state
+ * structure. The decoding is done using the ->atomic_get_property and
+ * ->atomic_set_property hooks of the corresponding object. Hence atomic
+ * drivers should not use drm_object_property_set_value() and
+ * drm_object_property_get_value() on mutable objects, i.e. those
+ * without the DRM_MODE_PROP_IMMUTABLE flag set.
*/
uint64_t values[DRM_OBJECT_MAX_PROPERTY];
};
--
2.8.1
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https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [PATCH 6/9] drm: move drm_mode_legacy_fb_format to drm_fourcc.c
2016-08-17 20:55 [PATCH 1/9] drm: Extract drm_encoder.[hc] Daniel Vetter
` (3 preceding siblings ...)
2016-08-17 20:56 ` [PATCH 5/9] drm/doc: Polish docs for drm_mode_object Daniel Vetter
@ 2016-08-17 20:56 ` Daniel Vetter
2016-08-25 12:25 ` Archit Taneja
2016-08-17 20:56 ` [PATCH 7/9] drm: Extract drm_property.[hc] Daniel Vetter
` (4 subsequent siblings)
9 siblings, 1 reply; 24+ messages in thread
From: Daniel Vetter @ 2016-08-17 20:56 UTC (permalink / raw)
To: DRI Development
Cc: Daniel Vetter, Intel Graphics Development, Laurent Pinchart,
Daniel Vetter
It's part of the drm fourcc handling code, mapping the old depth/bpp
values to new fourcc codes.
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
---
drivers/gpu/drm/drm_crtc.c | 43 -------------------------------------------
drivers/gpu/drm/drm_fourcc.c | 43 +++++++++++++++++++++++++++++++++++++++++++
include/drm/drm_crtc.h | 2 --
include/drm/drm_fourcc.h | 1 +
4 files changed, 44 insertions(+), 45 deletions(-)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index d7f68ec049d1..27b49ad0989b 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1666,49 +1666,6 @@ int drm_mode_cursor2_ioctl(struct drm_device *dev,
return drm_mode_cursor_common(dev, req, file_priv);
}
-/**
- * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
- * @bpp: bits per pixels
- * @depth: bit depth per pixel
- *
- * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
- * Useful in fbdev emulation code, since that deals in those values.
- */
-uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
-{
- uint32_t fmt;
-
- switch (bpp) {
- case 8:
- fmt = DRM_FORMAT_C8;
- break;
- case 16:
- if (depth == 15)
- fmt = DRM_FORMAT_XRGB1555;
- else
- fmt = DRM_FORMAT_RGB565;
- break;
- case 24:
- fmt = DRM_FORMAT_RGB888;
- break;
- case 32:
- if (depth == 24)
- fmt = DRM_FORMAT_XRGB8888;
- else if (depth == 30)
- fmt = DRM_FORMAT_XRGB2101010;
- else
- fmt = DRM_FORMAT_ARGB8888;
- break;
- default:
- DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
- fmt = DRM_FORMAT_XRGB8888;
- break;
- }
-
- return fmt;
-}
-EXPORT_SYMBOL(drm_mode_legacy_fb_format);
-
static bool drm_property_type_valid(struct drm_property *property)
{
if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
index c81546c15c93..29c56b4331e0 100644
--- a/drivers/gpu/drm/drm_fourcc.c
+++ b/drivers/gpu/drm/drm_fourcc.c
@@ -36,6 +36,49 @@ static char printable_char(int c)
}
/**
+ * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
+ * @bpp: bits per pixels
+ * @depth: bit depth per pixel
+ *
+ * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
+ * Useful in fbdev emulation code, since that deals in those values.
+ */
+uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
+{
+ uint32_t fmt;
+
+ switch (bpp) {
+ case 8:
+ fmt = DRM_FORMAT_C8;
+ break;
+ case 16:
+ if (depth == 15)
+ fmt = DRM_FORMAT_XRGB1555;
+ else
+ fmt = DRM_FORMAT_RGB565;
+ break;
+ case 24:
+ fmt = DRM_FORMAT_RGB888;
+ break;
+ case 32:
+ if (depth == 24)
+ fmt = DRM_FORMAT_XRGB8888;
+ else if (depth == 30)
+ fmt = DRM_FORMAT_XRGB2101010;
+ else
+ fmt = DRM_FORMAT_ARGB8888;
+ break;
+ default:
+ DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
+ fmt = DRM_FORMAT_XRGB8888;
+ break;
+ }
+
+ return fmt;
+}
+EXPORT_SYMBOL(drm_mode_legacy_fb_format);
+
+/**
* drm_get_format_name - return a string for drm fourcc format
* @format: format to compute name of
*
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 1abcc182e92b..f5e51e5e9724 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -2135,8 +2135,6 @@ extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
extern int drm_mode_set_config_internal(struct drm_mode_set *set);
-extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
-
extern struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
char topology[8]);
extern struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
diff --git a/include/drm/drm_fourcc.h b/include/drm/drm_fourcc.h
index b106337de1bf..30c30fa87ee8 100644
--- a/include/drm/drm_fourcc.h
+++ b/include/drm/drm_fourcc.h
@@ -25,6 +25,7 @@
#include <linux/types.h>
#include <uapi/drm/drm_fourcc.h>
+uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth, int *bpp);
int drm_format_num_planes(uint32_t format);
int drm_format_plane_cpp(uint32_t format, int plane);
--
2.8.1
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [PATCH 7/9] drm: Extract drm_property.[hc]
2016-08-17 20:55 [PATCH 1/9] drm: Extract drm_encoder.[hc] Daniel Vetter
` (4 preceding siblings ...)
2016-08-17 20:56 ` [PATCH 6/9] drm: move drm_mode_legacy_fb_format to drm_fourcc.c Daniel Vetter
@ 2016-08-17 20:56 ` Daniel Vetter
2016-08-18 11:11 ` Emil Velikov
2016-08-25 12:25 ` Archit Taneja
2016-08-17 20:56 ` [PATCH 8/9] drm: Unify handling of blob and object properties Daniel Vetter
` (3 subsequent siblings)
9 siblings, 2 replies; 24+ messages in thread
From: Daniel Vetter @ 2016-08-17 20:56 UTC (permalink / raw)
To: DRI Development; +Cc: Daniel Vetter, Intel Graphics Development, Daniel Vetter
This just contains the base property classes and all the code to
handle blobs. I think for any kind of standardized/shared properties
it's better to have separate files - this is fairly big already as-is.
v2: resurrect misplaced hunk (Daniel Stone)
Cc: Daniel Stone <daniel@fooishbar.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
---
Documentation/gpu/drm-kms.rst | 9 +
drivers/gpu/drm/Makefile | 2 +-
drivers/gpu/drm/drm_crtc.c | 926 -----------------------------------
drivers/gpu/drm/drm_crtc_internal.h | 32 +-
drivers/gpu/drm/drm_property.c | 953 ++++++++++++++++++++++++++++++++++++
include/drm/drm_crtc.h | 88 +---
include/drm/drm_property.h | 120 +++++
7 files changed, 1102 insertions(+), 1028 deletions(-)
create mode 100644 drivers/gpu/drm/drm_property.c
create mode 100644 include/drm/drm_property.h
diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
index b164472f2157..e07a2667ab61 100644
--- a/Documentation/gpu/drm-kms.rst
+++ b/Documentation/gpu/drm-kms.rst
@@ -389,6 +389,15 @@ connector and plane objects by calling the
pointer to the target object, a pointer to the previously created
property and an initial instance value.
+Property Types and Blob Property Support
+----------------------------------------
+
+.. kernel-doc:: include/drm/drm_property.h
+ :internal:
+
+.. kernel-doc:: drivers/gpu/drm/drm_property.c
+ :export:
+
Blending and Z-Position properties
----------------------------------
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 59979f3f3648..12a966ec7298 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -14,7 +14,7 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \
drm_rect.o drm_vma_manager.o drm_flip_work.o \
drm_modeset_lock.o drm_atomic.o drm_bridge.o \
drm_framebuffer.o drm_connector.o drm_blend.o \
- drm_encoder.o drm_mode_object.o
+ drm_encoder.o drm_mode_object.o drm_property.o
drm-$(CONFIG_COMPAT) += drm_ioc32.o
drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 27b49ad0989b..5f470a2b2061 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1666,932 +1666,6 @@ int drm_mode_cursor2_ioctl(struct drm_device *dev,
return drm_mode_cursor_common(dev, req, file_priv);
}
-static bool drm_property_type_valid(struct drm_property *property)
-{
- if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
- return !(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
- return !!(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
-}
-
-/**
- * drm_property_create - create a new property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @num_values: number of pre-defined values
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Note that the DRM core keeps a per-device list of properties and that, if
- * drm_mode_config_cleanup() is called, it will destroy all properties created
- * by the driver.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
-struct drm_property *drm_property_create(struct drm_device *dev, int flags,
- const char *name, int num_values)
-{
- struct drm_property *property = NULL;
- int ret;
-
- property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
- if (!property)
- return NULL;
-
- property->dev = dev;
-
- if (num_values) {
- property->values = kcalloc(num_values, sizeof(uint64_t),
- GFP_KERNEL);
- if (!property->values)
- goto fail;
- }
-
- ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
- if (ret)
- goto fail;
-
- property->flags = flags;
- property->num_values = num_values;
- INIT_LIST_HEAD(&property->enum_list);
-
- if (name) {
- strncpy(property->name, name, DRM_PROP_NAME_LEN);
- property->name[DRM_PROP_NAME_LEN-1] = '\0';
- }
-
- list_add_tail(&property->head, &dev->mode_config.property_list);
-
- WARN_ON(!drm_property_type_valid(property));
-
- return property;
-fail:
- kfree(property->values);
- kfree(property);
- return NULL;
-}
-EXPORT_SYMBOL(drm_property_create);
-
-/**
- * drm_property_create_enum - create a new enumeration property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @props: enumeration lists with property values
- * @num_values: number of pre-defined values
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Userspace is only allowed to set one of the predefined values for enumeration
- * properties.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
-struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
- const char *name,
- const struct drm_prop_enum_list *props,
- int num_values)
-{
- struct drm_property *property;
- int i, ret;
-
- flags |= DRM_MODE_PROP_ENUM;
-
- property = drm_property_create(dev, flags, name, num_values);
- if (!property)
- return NULL;
-
- for (i = 0; i < num_values; i++) {
- ret = drm_property_add_enum(property, i,
- props[i].type,
- props[i].name);
- if (ret) {
- drm_property_destroy(dev, property);
- return NULL;
- }
- }
-
- return property;
-}
-EXPORT_SYMBOL(drm_property_create_enum);
-
-/**
- * drm_property_create_bitmask - create a new bitmask property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @props: enumeration lists with property bitflags
- * @num_props: size of the @props array
- * @supported_bits: bitmask of all supported enumeration values
- *
- * This creates a new bitmask drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Compared to plain enumeration properties userspace is allowed to set any
- * or'ed together combination of the predefined property bitflag values
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
-struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
- int flags, const char *name,
- const struct drm_prop_enum_list *props,
- int num_props,
- uint64_t supported_bits)
-{
- struct drm_property *property;
- int i, ret, index = 0;
- int num_values = hweight64(supported_bits);
-
- flags |= DRM_MODE_PROP_BITMASK;
-
- property = drm_property_create(dev, flags, name, num_values);
- if (!property)
- return NULL;
- for (i = 0; i < num_props; i++) {
- if (!(supported_bits & (1ULL << props[i].type)))
- continue;
-
- if (WARN_ON(index >= num_values)) {
- drm_property_destroy(dev, property);
- return NULL;
- }
-
- ret = drm_property_add_enum(property, index++,
- props[i].type,
- props[i].name);
- if (ret) {
- drm_property_destroy(dev, property);
- return NULL;
- }
- }
-
- return property;
-}
-EXPORT_SYMBOL(drm_property_create_bitmask);
-
-static struct drm_property *property_create_range(struct drm_device *dev,
- int flags, const char *name,
- uint64_t min, uint64_t max)
-{
- struct drm_property *property;
-
- property = drm_property_create(dev, flags, name, 2);
- if (!property)
- return NULL;
-
- property->values[0] = min;
- property->values[1] = max;
-
- return property;
-}
-
-/**
- * drm_property_create_range - create a new unsigned ranged property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @min: minimum value of the property
- * @max: maximum value of the property
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Userspace is allowed to set any unsigned integer value in the (min, max)
- * range inclusive.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
-struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
- const char *name,
- uint64_t min, uint64_t max)
-{
- return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
- name, min, max);
-}
-EXPORT_SYMBOL(drm_property_create_range);
-
-/**
- * drm_property_create_signed_range - create a new signed ranged property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @min: minimum value of the property
- * @max: maximum value of the property
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Userspace is allowed to set any signed integer value in the (min, max)
- * range inclusive.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
-struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
- int flags, const char *name,
- int64_t min, int64_t max)
-{
- return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
- name, I642U64(min), I642U64(max));
-}
-EXPORT_SYMBOL(drm_property_create_signed_range);
-
-/**
- * drm_property_create_object - create a new object property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @type: object type from DRM_MODE_OBJECT_* defines
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Userspace is only allowed to set this to any property value of the given
- * @type. Only useful for atomic properties, which is enforced.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
-struct drm_property *drm_property_create_object(struct drm_device *dev,
- int flags, const char *name, uint32_t type)
-{
- struct drm_property *property;
-
- flags |= DRM_MODE_PROP_OBJECT;
-
- if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
- return NULL;
-
- property = drm_property_create(dev, flags, name, 1);
- if (!property)
- return NULL;
-
- property->values[0] = type;
-
- return property;
-}
-EXPORT_SYMBOL(drm_property_create_object);
-
-/**
- * drm_property_create_bool - create a new boolean property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * This is implemented as a ranged property with only {0, 1} as valid values.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
-struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
- const char *name)
-{
- return drm_property_create_range(dev, flags, name, 0, 1);
-}
-EXPORT_SYMBOL(drm_property_create_bool);
-
-/**
- * drm_property_add_enum - add a possible value to an enumeration property
- * @property: enumeration property to change
- * @index: index of the new enumeration
- * @value: value of the new enumeration
- * @name: symbolic name of the new enumeration
- *
- * This functions adds enumerations to a property.
- *
- * It's use is deprecated, drivers should use one of the more specific helpers
- * to directly create the property with all enumerations already attached.
- *
- * Returns:
- * Zero on success, error code on failure.
- */
-int drm_property_add_enum(struct drm_property *property, int index,
- uint64_t value, const char *name)
-{
- struct drm_property_enum *prop_enum;
-
- if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
- drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
- return -EINVAL;
-
- /*
- * Bitmask enum properties have the additional constraint of values
- * from 0 to 63
- */
- if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
- (value > 63))
- return -EINVAL;
-
- if (!list_empty(&property->enum_list)) {
- list_for_each_entry(prop_enum, &property->enum_list, head) {
- if (prop_enum->value == value) {
- strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
- prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
- return 0;
- }
- }
- }
-
- prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
- if (!prop_enum)
- return -ENOMEM;
-
- strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
- prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
- prop_enum->value = value;
-
- property->values[index] = value;
- list_add_tail(&prop_enum->head, &property->enum_list);
- return 0;
-}
-EXPORT_SYMBOL(drm_property_add_enum);
-
-/**
- * drm_property_destroy - destroy a drm property
- * @dev: drm device
- * @property: property to destry
- *
- * This function frees a property including any attached resources like
- * enumeration values.
- */
-void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
-{
- struct drm_property_enum *prop_enum, *pt;
-
- list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
- list_del(&prop_enum->head);
- kfree(prop_enum);
- }
-
- if (property->num_values)
- kfree(property->values);
- drm_mode_object_unregister(dev, &property->base);
- list_del(&property->head);
- kfree(property);
-}
-EXPORT_SYMBOL(drm_property_destroy);
-
-/**
- * drm_mode_getproperty_ioctl - get the property metadata
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * This function retrieves the metadata for a given property, like the different
- * possible values for an enum property or the limits for a range property.
- *
- * Blob properties are special
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
-int drm_mode_getproperty_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv)
-{
- struct drm_mode_get_property *out_resp = data;
- struct drm_property *property;
- int enum_count = 0;
- int value_count = 0;
- int ret = 0, i;
- int copied;
- struct drm_property_enum *prop_enum;
- struct drm_mode_property_enum __user *enum_ptr;
- uint64_t __user *values_ptr;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- drm_modeset_lock_all(dev);
- property = drm_property_find(dev, out_resp->prop_id);
- if (!property) {
- ret = -ENOENT;
- goto done;
- }
-
- if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
- drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
- list_for_each_entry(prop_enum, &property->enum_list, head)
- enum_count++;
- }
-
- value_count = property->num_values;
-
- strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
- out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
- out_resp->flags = property->flags;
-
- if ((out_resp->count_values >= value_count) && value_count) {
- values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
- for (i = 0; i < value_count; i++) {
- if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
- ret = -EFAULT;
- goto done;
- }
- }
- }
- out_resp->count_values = value_count;
-
- if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
- drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
- if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
- copied = 0;
- enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
- list_for_each_entry(prop_enum, &property->enum_list, head) {
-
- if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
- ret = -EFAULT;
- goto done;
- }
-
- if (copy_to_user(&enum_ptr[copied].name,
- &prop_enum->name, DRM_PROP_NAME_LEN)) {
- ret = -EFAULT;
- goto done;
- }
- copied++;
- }
- }
- out_resp->count_enum_blobs = enum_count;
- }
-
- /*
- * NOTE: The idea seems to have been to use this to read all the blob
- * property values. But nothing ever added them to the corresponding
- * list, userspace always used the special-purpose get_blob ioctl to
- * read the value for a blob property. It also doesn't make a lot of
- * sense to return values here when everything else is just metadata for
- * the property itself.
- */
- if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
- out_resp->count_enum_blobs = 0;
-done:
- drm_modeset_unlock_all(dev);
- return ret;
-}
-
-static void drm_property_free_blob(struct kref *kref)
-{
- struct drm_property_blob *blob =
- container_of(kref, struct drm_property_blob, base.refcount);
-
- mutex_lock(&blob->dev->mode_config.blob_lock);
- list_del(&blob->head_global);
- mutex_unlock(&blob->dev->mode_config.blob_lock);
-
- drm_mode_object_unregister(blob->dev, &blob->base);
-
- kfree(blob);
-}
-
-/**
- * drm_property_create_blob - Create new blob property
- *
- * Creates a new blob property for a specified DRM device, optionally
- * copying data.
- *
- * @dev: DRM device to create property for
- * @length: Length to allocate for blob data
- * @data: If specified, copies data into blob
- *
- * Returns:
- * New blob property with a single reference on success, or an ERR_PTR
- * value on failure.
- */
-struct drm_property_blob *
-drm_property_create_blob(struct drm_device *dev, size_t length,
- const void *data)
-{
- struct drm_property_blob *blob;
- int ret;
-
- if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
- return ERR_PTR(-EINVAL);
-
- blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
- if (!blob)
- return ERR_PTR(-ENOMEM);
-
- /* This must be explicitly initialised, so we can safely call list_del
- * on it in the removal handler, even if it isn't in a file list. */
- INIT_LIST_HEAD(&blob->head_file);
- blob->length = length;
- blob->dev = dev;
-
- if (data)
- memcpy(blob->data, data, length);
-
- ret = drm_mode_object_get_reg(dev, &blob->base, DRM_MODE_OBJECT_BLOB,
- true, drm_property_free_blob);
- if (ret) {
- kfree(blob);
- return ERR_PTR(-EINVAL);
- }
-
- mutex_lock(&dev->mode_config.blob_lock);
- list_add_tail(&blob->head_global,
- &dev->mode_config.property_blob_list);
- mutex_unlock(&dev->mode_config.blob_lock);
-
- return blob;
-}
-EXPORT_SYMBOL(drm_property_create_blob);
-
-/**
- * drm_property_unreference_blob - Unreference a blob property
- *
- * Drop a reference on a blob property. May free the object.
- *
- * @blob: Pointer to blob property
- */
-void drm_property_unreference_blob(struct drm_property_blob *blob)
-{
- if (!blob)
- return;
-
- drm_mode_object_unreference(&blob->base);
-}
-EXPORT_SYMBOL(drm_property_unreference_blob);
-
-/**
- * drm_property_destroy_user_blobs - destroy all blobs created by this client
- * @dev: DRM device
- * @file_priv: destroy all blobs owned by this file handle
- */
-void drm_property_destroy_user_blobs(struct drm_device *dev,
- struct drm_file *file_priv)
-{
- struct drm_property_blob *blob, *bt;
-
- /*
- * When the file gets released that means no one else can access the
- * blob list any more, so no need to grab dev->blob_lock.
- */
- list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
- list_del_init(&blob->head_file);
- drm_property_unreference_blob(blob);
- }
-}
-
-/**
- * drm_property_reference_blob - Take a reference on an existing property
- *
- * Take a new reference on an existing blob property.
- *
- * @blob: Pointer to blob property
- */
-struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
-{
- drm_mode_object_reference(&blob->base);
- return blob;
-}
-EXPORT_SYMBOL(drm_property_reference_blob);
-
-/**
- * drm_property_lookup_blob - look up a blob property and take a reference
- * @dev: drm device
- * @id: id of the blob property
- *
- * If successful, this takes an additional reference to the blob property.
- * callers need to make sure to eventually unreference the returned property
- * again, using @drm_property_unreference_blob.
- */
-struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
- uint32_t id)
-{
- struct drm_mode_object *obj;
- struct drm_property_blob *blob = NULL;
-
- obj = __drm_mode_object_find(dev, id, DRM_MODE_OBJECT_BLOB);
- if (obj)
- blob = obj_to_blob(obj);
- return blob;
-}
-EXPORT_SYMBOL(drm_property_lookup_blob);
-
-/**
- * drm_property_replace_global_blob - atomically replace existing blob property
- * @dev: drm device
- * @replace: location of blob property pointer to be replaced
- * @length: length of data for new blob, or 0 for no data
- * @data: content for new blob, or NULL for no data
- * @obj_holds_id: optional object for property holding blob ID
- * @prop_holds_id: optional property holding blob ID
- * @return 0 on success or error on failure
- *
- * This function will atomically replace a global property in the blob list,
- * optionally updating a property which holds the ID of that property. It is
- * guaranteed to be atomic: no caller will be allowed to see intermediate
- * results, and either the entire operation will succeed and clean up the
- * previous property, or it will fail and the state will be unchanged.
- *
- * If length is 0 or data is NULL, no new blob will be created, and the holding
- * property, if specified, will be set to 0.
- *
- * Access to the replace pointer is assumed to be protected by the caller, e.g.
- * by holding the relevant modesetting object lock for its parent.
- *
- * For example, a drm_connector has a 'PATH' property, which contains the ID
- * of a blob property with the value of the MST path information. Calling this
- * function with replace pointing to the connector's path_blob_ptr, length and
- * data set for the new path information, obj_holds_id set to the connector's
- * base object, and prop_holds_id set to the path property name, will perform
- * a completely atomic update. The access to path_blob_ptr is protected by the
- * caller holding a lock on the connector.
- */
-int drm_property_replace_global_blob(struct drm_device *dev,
- struct drm_property_blob **replace,
- size_t length,
- const void *data,
- struct drm_mode_object *obj_holds_id,
- struct drm_property *prop_holds_id)
-{
- struct drm_property_blob *new_blob = NULL;
- struct drm_property_blob *old_blob = NULL;
- int ret;
-
- WARN_ON(replace == NULL);
-
- old_blob = *replace;
-
- if (length && data) {
- new_blob = drm_property_create_blob(dev, length, data);
- if (IS_ERR(new_blob))
- return PTR_ERR(new_blob);
- }
-
- /* This does not need to be synchronised with blob_lock, as the
- * get_properties ioctl locks all modesetting objects, and
- * obj_holds_id must be locked before calling here, so we cannot
- * have its value out of sync with the list membership modified
- * below under blob_lock. */
- if (obj_holds_id) {
- ret = drm_object_property_set_value(obj_holds_id,
- prop_holds_id,
- new_blob ?
- new_blob->base.id : 0);
- if (ret != 0)
- goto err_created;
- }
-
- drm_property_unreference_blob(old_blob);
- *replace = new_blob;
-
- return 0;
-
-err_created:
- drm_property_unreference_blob(new_blob);
- return ret;
-}
-EXPORT_SYMBOL(drm_property_replace_global_blob);
-
-/**
- * drm_mode_getblob_ioctl - get the contents of a blob property value
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * This function retrieves the contents of a blob property. The value stored in
- * an object's blob property is just a normal modeset object id.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
-int drm_mode_getblob_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv)
-{
- struct drm_mode_get_blob *out_resp = data;
- struct drm_property_blob *blob;
- int ret = 0;
- void __user *blob_ptr;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- blob = drm_property_lookup_blob(dev, out_resp->blob_id);
- if (!blob)
- return -ENOENT;
-
- if (out_resp->length == blob->length) {
- blob_ptr = (void __user *)(unsigned long)out_resp->data;
- if (copy_to_user(blob_ptr, blob->data, blob->length)) {
- ret = -EFAULT;
- goto unref;
- }
- }
- out_resp->length = blob->length;
-unref:
- drm_property_unreference_blob(blob);
-
- return ret;
-}
-
-/**
- * drm_mode_createblob_ioctl - create a new blob property
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * This function creates a new blob property with user-defined values. In order
- * to give us sensible validation and checking when creating, rather than at
- * every potential use, we also require a type to be provided upfront.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
-int drm_mode_createblob_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv)
-{
- struct drm_mode_create_blob *out_resp = data;
- struct drm_property_blob *blob;
- void __user *blob_ptr;
- int ret = 0;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- blob = drm_property_create_blob(dev, out_resp->length, NULL);
- if (IS_ERR(blob))
- return PTR_ERR(blob);
-
- blob_ptr = (void __user *)(unsigned long)out_resp->data;
- if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
- ret = -EFAULT;
- goto out_blob;
- }
-
- /* Dropping the lock between create_blob and our access here is safe
- * as only the same file_priv can remove the blob; at this point, it is
- * not associated with any file_priv. */
- mutex_lock(&dev->mode_config.blob_lock);
- out_resp->blob_id = blob->base.id;
- list_add_tail(&blob->head_file, &file_priv->blobs);
- mutex_unlock(&dev->mode_config.blob_lock);
-
- return 0;
-
-out_blob:
- drm_property_unreference_blob(blob);
- return ret;
-}
-
-/**
- * drm_mode_destroyblob_ioctl - destroy a user blob property
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * Destroy an existing user-defined blob property.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
-int drm_mode_destroyblob_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv)
-{
- struct drm_mode_destroy_blob *out_resp = data;
- struct drm_property_blob *blob = NULL, *bt;
- bool found = false;
- int ret = 0;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- blob = drm_property_lookup_blob(dev, out_resp->blob_id);
- if (!blob)
- return -ENOENT;
-
- mutex_lock(&dev->mode_config.blob_lock);
- /* Ensure the property was actually created by this user. */
- list_for_each_entry(bt, &file_priv->blobs, head_file) {
- if (bt == blob) {
- found = true;
- break;
- }
- }
-
- if (!found) {
- ret = -EPERM;
- goto err;
- }
-
- /* We must drop head_file here, because we may not be the last
- * reference on the blob. */
- list_del_init(&blob->head_file);
- mutex_unlock(&dev->mode_config.blob_lock);
-
- /* One reference from lookup, and one from the filp. */
- drm_property_unreference_blob(blob);
- drm_property_unreference_blob(blob);
-
- return 0;
-
-err:
- mutex_unlock(&dev->mode_config.blob_lock);
- drm_property_unreference_blob(blob);
-
- return ret;
-}
-
-/* Some properties could refer to dynamic refcnt'd objects, or things that
- * need special locking to handle lifetime issues (ie. to ensure the prop
- * value doesn't become invalid part way through the property update due to
- * race). The value returned by reference via 'obj' should be passed back
- * to drm_property_change_valid_put() after the property is set (and the
- * object to which the property is attached has a chance to take it's own
- * reference).
- */
-bool drm_property_change_valid_get(struct drm_property *property,
- uint64_t value, struct drm_mode_object **ref)
-{
- int i;
-
- if (property->flags & DRM_MODE_PROP_IMMUTABLE)
- return false;
-
- *ref = NULL;
-
- if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
- if (value < property->values[0] || value > property->values[1])
- return false;
- return true;
- } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
- int64_t svalue = U642I64(value);
-
- if (svalue < U642I64(property->values[0]) ||
- svalue > U642I64(property->values[1]))
- return false;
- return true;
- } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
- uint64_t valid_mask = 0;
-
- for (i = 0; i < property->num_values; i++)
- valid_mask |= (1ULL << property->values[i]);
- return !(value & ~valid_mask);
- } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
- struct drm_property_blob *blob;
-
- if (value == 0)
- return true;
-
- blob = drm_property_lookup_blob(property->dev, value);
- if (blob) {
- *ref = &blob->base;
- return true;
- } else {
- return false;
- }
- } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
- /* a zero value for an object property translates to null: */
- if (value == 0)
- return true;
-
- *ref = __drm_mode_object_find(property->dev, value,
- property->values[0]);
- return *ref != NULL;
- }
-
- for (i = 0; i < property->num_values; i++)
- if (property->values[i] == value)
- return true;
- return false;
-}
-
-void drm_property_change_valid_put(struct drm_property *property,
- struct drm_mode_object *ref)
-{
- if (!ref)
- return;
-
- if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
- drm_mode_object_unreference(ref);
- } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
- drm_property_unreference_blob(obj_to_blob(ref));
-}
-
int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t value)
diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
index 26ea7b5e3684..131ecfb16d7b 100644
--- a/drivers/gpu/drm/drm_crtc_internal.h
+++ b/drivers/gpu/drm/drm_crtc_internal.h
@@ -36,11 +36,6 @@
int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t value);
-bool drm_property_change_valid_get(struct drm_property *property,
- uint64_t value,
- struct drm_mode_object **ref);
-void drm_property_change_valid_put(struct drm_property *property,
- struct drm_mode_object *ref);
int drm_plane_check_pixel_format(const struct drm_plane *plane,
u32 format);
int drm_crtc_check_viewport(const struct drm_crtc *crtc,
@@ -49,8 +44,6 @@ int drm_crtc_check_viewport(const struct drm_crtc *crtc,
const struct drm_framebuffer *fb);
void drm_fb_release(struct drm_file *file_priv);
-void drm_property_destroy_user_blobs(struct drm_device *dev,
- struct drm_file *file_priv);
/* dumb buffer support IOCTLs */
int drm_mode_create_dumb_ioctl(struct drm_device *dev,
@@ -77,6 +70,24 @@ int drm_mode_cursor_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
int drm_mode_cursor2_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
+int drm_mode_gamma_get_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv);
+int drm_mode_gamma_set_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv);
+
+int drm_mode_page_flip_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv);
+
+/* drm_property.c */
+void drm_property_destroy_user_blobs(struct drm_device *dev,
+ struct drm_file *file_priv);
+bool drm_property_change_valid_get(struct drm_property *property,
+ uint64_t value,
+ struct drm_mode_object **ref);
+void drm_property_change_valid_put(struct drm_property *property,
+ struct drm_mode_object *ref);
+
+/* IOCTL */
int drm_mode_getproperty_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
int drm_mode_getblob_ioctl(struct drm_device *dev,
@@ -85,13 +96,6 @@ int drm_mode_createblob_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
int drm_mode_destroyblob_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
-int drm_mode_gamma_get_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv);
-int drm_mode_gamma_set_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv);
-
-int drm_mode_page_flip_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv);
/* drm_mode_object.c */
int drm_mode_object_get_reg(struct drm_device *dev,
diff --git a/drivers/gpu/drm/drm_property.c b/drivers/gpu/drm/drm_property.c
new file mode 100644
index 000000000000..162cc9032ae5
--- /dev/null
+++ b/drivers/gpu/drm/drm_property.c
@@ -0,0 +1,953 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <linux/export.h>
+#include <drm/drmP.h>
+#include <drm/drm_property.h>
+
+#include "drm_crtc_internal.h"
+
+static bool drm_property_type_valid(struct drm_property *property)
+{
+ if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
+ return !(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
+ return !!(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
+}
+
+/**
+ * drm_property_create - create a new property type
+ * @dev: drm device
+ * @flags: flags specifying the property type
+ * @name: name of the property
+ * @num_values: number of pre-defined values
+ *
+ * This creates a new generic drm property which can then be attached to a drm
+ * object with drm_object_attach_property. The returned property object must be
+ * freed with drm_property_destroy.
+ *
+ * Note that the DRM core keeps a per-device list of properties and that, if
+ * drm_mode_config_cleanup() is called, it will destroy all properties created
+ * by the driver.
+ *
+ * Returns:
+ * A pointer to the newly created property on success, NULL on failure.
+ */
+struct drm_property *drm_property_create(struct drm_device *dev, int flags,
+ const char *name, int num_values)
+{
+ struct drm_property *property = NULL;
+ int ret;
+
+ property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
+ if (!property)
+ return NULL;
+
+ property->dev = dev;
+
+ if (num_values) {
+ property->values = kcalloc(num_values, sizeof(uint64_t),
+ GFP_KERNEL);
+ if (!property->values)
+ goto fail;
+ }
+
+ ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
+ if (ret)
+ goto fail;
+
+ property->flags = flags;
+ property->num_values = num_values;
+ INIT_LIST_HEAD(&property->enum_list);
+
+ if (name) {
+ strncpy(property->name, name, DRM_PROP_NAME_LEN);
+ property->name[DRM_PROP_NAME_LEN-1] = '\0';
+ }
+
+ list_add_tail(&property->head, &dev->mode_config.property_list);
+
+ WARN_ON(!drm_property_type_valid(property));
+
+ return property;
+fail:
+ kfree(property->values);
+ kfree(property);
+ return NULL;
+}
+EXPORT_SYMBOL(drm_property_create);
+
+/**
+ * drm_property_create_enum - create a new enumeration property type
+ * @dev: drm device
+ * @flags: flags specifying the property type
+ * @name: name of the property
+ * @props: enumeration lists with property values
+ * @num_values: number of pre-defined values
+ *
+ * This creates a new generic drm property which can then be attached to a drm
+ * object with drm_object_attach_property. The returned property object must be
+ * freed with drm_property_destroy.
+ *
+ * Userspace is only allowed to set one of the predefined values for enumeration
+ * properties.
+ *
+ * Returns:
+ * A pointer to the newly created property on success, NULL on failure.
+ */
+struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
+ const char *name,
+ const struct drm_prop_enum_list *props,
+ int num_values)
+{
+ struct drm_property *property;
+ int i, ret;
+
+ flags |= DRM_MODE_PROP_ENUM;
+
+ property = drm_property_create(dev, flags, name, num_values);
+ if (!property)
+ return NULL;
+
+ for (i = 0; i < num_values; i++) {
+ ret = drm_property_add_enum(property, i,
+ props[i].type,
+ props[i].name);
+ if (ret) {
+ drm_property_destroy(dev, property);
+ return NULL;
+ }
+ }
+
+ return property;
+}
+EXPORT_SYMBOL(drm_property_create_enum);
+
+/**
+ * drm_property_create_bitmask - create a new bitmask property type
+ * @dev: drm device
+ * @flags: flags specifying the property type
+ * @name: name of the property
+ * @props: enumeration lists with property bitflags
+ * @num_props: size of the @props array
+ * @supported_bits: bitmask of all supported enumeration values
+ *
+ * This creates a new bitmask drm property which can then be attached to a drm
+ * object with drm_object_attach_property. The returned property object must be
+ * freed with drm_property_destroy.
+ *
+ * Compared to plain enumeration properties userspace is allowed to set any
+ * or'ed together combination of the predefined property bitflag values
+ *
+ * Returns:
+ * A pointer to the newly created property on success, NULL on failure.
+ */
+struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
+ int flags, const char *name,
+ const struct drm_prop_enum_list *props,
+ int num_props,
+ uint64_t supported_bits)
+{
+ struct drm_property *property;
+ int i, ret, index = 0;
+ int num_values = hweight64(supported_bits);
+
+ flags |= DRM_MODE_PROP_BITMASK;
+
+ property = drm_property_create(dev, flags, name, num_values);
+ if (!property)
+ return NULL;
+ for (i = 0; i < num_props; i++) {
+ if (!(supported_bits & (1ULL << props[i].type)))
+ continue;
+
+ if (WARN_ON(index >= num_values)) {
+ drm_property_destroy(dev, property);
+ return NULL;
+ }
+
+ ret = drm_property_add_enum(property, index++,
+ props[i].type,
+ props[i].name);
+ if (ret) {
+ drm_property_destroy(dev, property);
+ return NULL;
+ }
+ }
+
+ return property;
+}
+EXPORT_SYMBOL(drm_property_create_bitmask);
+
+static struct drm_property *property_create_range(struct drm_device *dev,
+ int flags, const char *name,
+ uint64_t min, uint64_t max)
+{
+ struct drm_property *property;
+
+ property = drm_property_create(dev, flags, name, 2);
+ if (!property)
+ return NULL;
+
+ property->values[0] = min;
+ property->values[1] = max;
+
+ return property;
+}
+
+/**
+ * drm_property_create_range - create a new unsigned ranged property type
+ * @dev: drm device
+ * @flags: flags specifying the property type
+ * @name: name of the property
+ * @min: minimum value of the property
+ * @max: maximum value of the property
+ *
+ * This creates a new generic drm property which can then be attached to a drm
+ * object with drm_object_attach_property. The returned property object must be
+ * freed with drm_property_destroy.
+ *
+ * Userspace is allowed to set any unsigned integer value in the (min, max)
+ * range inclusive.
+ *
+ * Returns:
+ * A pointer to the newly created property on success, NULL on failure.
+ */
+struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
+ const char *name,
+ uint64_t min, uint64_t max)
+{
+ return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
+ name, min, max);
+}
+EXPORT_SYMBOL(drm_property_create_range);
+
+/**
+ * drm_property_create_signed_range - create a new signed ranged property type
+ * @dev: drm device
+ * @flags: flags specifying the property type
+ * @name: name of the property
+ * @min: minimum value of the property
+ * @max: maximum value of the property
+ *
+ * This creates a new generic drm property which can then be attached to a drm
+ * object with drm_object_attach_property. The returned property object must be
+ * freed with drm_property_destroy.
+ *
+ * Userspace is allowed to set any signed integer value in the (min, max)
+ * range inclusive.
+ *
+ * Returns:
+ * A pointer to the newly created property on success, NULL on failure.
+ */
+struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
+ int flags, const char *name,
+ int64_t min, int64_t max)
+{
+ return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
+ name, I642U64(min), I642U64(max));
+}
+EXPORT_SYMBOL(drm_property_create_signed_range);
+
+/**
+ * drm_property_create_object - create a new object property type
+ * @dev: drm device
+ * @flags: flags specifying the property type
+ * @name: name of the property
+ * @type: object type from DRM_MODE_OBJECT_* defines
+ *
+ * This creates a new generic drm property which can then be attached to a drm
+ * object with drm_object_attach_property. The returned property object must be
+ * freed with drm_property_destroy.
+ *
+ * Userspace is only allowed to set this to any property value of the given
+ * @type. Only useful for atomic properties, which is enforced.
+ *
+ * Returns:
+ * A pointer to the newly created property on success, NULL on failure.
+ */
+struct drm_property *drm_property_create_object(struct drm_device *dev,
+ int flags, const char *name, uint32_t type)
+{
+ struct drm_property *property;
+
+ flags |= DRM_MODE_PROP_OBJECT;
+
+ if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
+ return NULL;
+
+ property = drm_property_create(dev, flags, name, 1);
+ if (!property)
+ return NULL;
+
+ property->values[0] = type;
+
+ return property;
+}
+EXPORT_SYMBOL(drm_property_create_object);
+
+/**
+ * drm_property_create_bool - create a new boolean property type
+ * @dev: drm device
+ * @flags: flags specifying the property type
+ * @name: name of the property
+ *
+ * This creates a new generic drm property which can then be attached to a drm
+ * object with drm_object_attach_property. The returned property object must be
+ * freed with drm_property_destroy.
+ *
+ * This is implemented as a ranged property with only {0, 1} as valid values.
+ *
+ * Returns:
+ * A pointer to the newly created property on success, NULL on failure.
+ */
+struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
+ const char *name)
+{
+ return drm_property_create_range(dev, flags, name, 0, 1);
+}
+EXPORT_SYMBOL(drm_property_create_bool);
+
+/**
+ * drm_property_add_enum - add a possible value to an enumeration property
+ * @property: enumeration property to change
+ * @index: index of the new enumeration
+ * @value: value of the new enumeration
+ * @name: symbolic name of the new enumeration
+ *
+ * This functions adds enumerations to a property.
+ *
+ * It's use is deprecated, drivers should use one of the more specific helpers
+ * to directly create the property with all enumerations already attached.
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int drm_property_add_enum(struct drm_property *property, int index,
+ uint64_t value, const char *name)
+{
+ struct drm_property_enum *prop_enum;
+
+ if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
+ drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
+ return -EINVAL;
+
+ /*
+ * Bitmask enum properties have the additional constraint of values
+ * from 0 to 63
+ */
+ if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
+ (value > 63))
+ return -EINVAL;
+
+ if (!list_empty(&property->enum_list)) {
+ list_for_each_entry(prop_enum, &property->enum_list, head) {
+ if (prop_enum->value == value) {
+ strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
+ prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
+ return 0;
+ }
+ }
+ }
+
+ prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
+ if (!prop_enum)
+ return -ENOMEM;
+
+ strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
+ prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
+ prop_enum->value = value;
+
+ property->values[index] = value;
+ list_add_tail(&prop_enum->head, &property->enum_list);
+ return 0;
+}
+EXPORT_SYMBOL(drm_property_add_enum);
+
+/**
+ * drm_property_destroy - destroy a drm property
+ * @dev: drm device
+ * @property: property to destry
+ *
+ * This function frees a property including any attached resources like
+ * enumeration values.
+ */
+void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
+{
+ struct drm_property_enum *prop_enum, *pt;
+
+ list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
+ list_del(&prop_enum->head);
+ kfree(prop_enum);
+ }
+
+ if (property->num_values)
+ kfree(property->values);
+ drm_mode_object_unregister(dev, &property->base);
+ list_del(&property->head);
+ kfree(property);
+}
+EXPORT_SYMBOL(drm_property_destroy);
+
+/**
+ * drm_mode_getproperty_ioctl - get the property metadata
+ * @dev: DRM device
+ * @data: ioctl data
+ * @file_priv: DRM file info
+ *
+ * This function retrieves the metadata for a given property, like the different
+ * possible values for an enum property or the limits for a range property.
+ *
+ * Blob properties are special
+ *
+ * Called by the user via ioctl.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_mode_getproperty_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv)
+{
+ struct drm_mode_get_property *out_resp = data;
+ struct drm_property *property;
+ int enum_count = 0;
+ int value_count = 0;
+ int ret = 0, i;
+ int copied;
+ struct drm_property_enum *prop_enum;
+ struct drm_mode_property_enum __user *enum_ptr;
+ uint64_t __user *values_ptr;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ drm_modeset_lock_all(dev);
+ property = drm_property_find(dev, out_resp->prop_id);
+ if (!property) {
+ ret = -ENOENT;
+ goto done;
+ }
+
+ if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
+ drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
+ list_for_each_entry(prop_enum, &property->enum_list, head)
+ enum_count++;
+ }
+
+ value_count = property->num_values;
+
+ strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
+ out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
+ out_resp->flags = property->flags;
+
+ if ((out_resp->count_values >= value_count) && value_count) {
+ values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
+ for (i = 0; i < value_count; i++) {
+ if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
+ ret = -EFAULT;
+ goto done;
+ }
+ }
+ }
+ out_resp->count_values = value_count;
+
+ if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
+ drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
+ if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
+ copied = 0;
+ enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
+ list_for_each_entry(prop_enum, &property->enum_list, head) {
+
+ if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
+ ret = -EFAULT;
+ goto done;
+ }
+
+ if (copy_to_user(&enum_ptr[copied].name,
+ &prop_enum->name, DRM_PROP_NAME_LEN)) {
+ ret = -EFAULT;
+ goto done;
+ }
+ copied++;
+ }
+ }
+ out_resp->count_enum_blobs = enum_count;
+ }
+
+ /*
+ * NOTE: The idea seems to have been to use this to read all the blob
+ * property values. But nothing ever added them to the corresponding
+ * list, userspace always used the special-purpose get_blob ioctl to
+ * read the value for a blob property. It also doesn't make a lot of
+ * sense to return values here when everything else is just metadata for
+ * the property itself.
+ */
+ if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
+ out_resp->count_enum_blobs = 0;
+done:
+ drm_modeset_unlock_all(dev);
+ return ret;
+}
+
+static void drm_property_free_blob(struct kref *kref)
+{
+ struct drm_property_blob *blob =
+ container_of(kref, struct drm_property_blob, base.refcount);
+
+ mutex_lock(&blob->dev->mode_config.blob_lock);
+ list_del(&blob->head_global);
+ mutex_unlock(&blob->dev->mode_config.blob_lock);
+
+ drm_mode_object_unregister(blob->dev, &blob->base);
+
+ kfree(blob);
+}
+
+/**
+ * drm_property_create_blob - Create new blob property
+ *
+ * Creates a new blob property for a specified DRM device, optionally
+ * copying data.
+ *
+ * @dev: DRM device to create property for
+ * @length: Length to allocate for blob data
+ * @data: If specified, copies data into blob
+ *
+ * Returns:
+ * New blob property with a single reference on success, or an ERR_PTR
+ * value on failure.
+ */
+struct drm_property_blob *
+drm_property_create_blob(struct drm_device *dev, size_t length,
+ const void *data)
+{
+ struct drm_property_blob *blob;
+ int ret;
+
+ if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
+ return ERR_PTR(-EINVAL);
+
+ blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
+ if (!blob)
+ return ERR_PTR(-ENOMEM);
+
+ /* This must be explicitly initialised, so we can safely call list_del
+ * on it in the removal handler, even if it isn't in a file list. */
+ INIT_LIST_HEAD(&blob->head_file);
+ blob->length = length;
+ blob->dev = dev;
+
+ if (data)
+ memcpy(blob->data, data, length);
+
+ ret = drm_mode_object_get_reg(dev, &blob->base, DRM_MODE_OBJECT_BLOB,
+ true, drm_property_free_blob);
+ if (ret) {
+ kfree(blob);
+ return ERR_PTR(-EINVAL);
+ }
+
+ mutex_lock(&dev->mode_config.blob_lock);
+ list_add_tail(&blob->head_global,
+ &dev->mode_config.property_blob_list);
+ mutex_unlock(&dev->mode_config.blob_lock);
+
+ return blob;
+}
+EXPORT_SYMBOL(drm_property_create_blob);
+
+/**
+ * drm_property_unreference_blob - Unreference a blob property
+ *
+ * Drop a reference on a blob property. May free the object.
+ *
+ * @blob: Pointer to blob property
+ */
+void drm_property_unreference_blob(struct drm_property_blob *blob)
+{
+ if (!blob)
+ return;
+
+ drm_mode_object_unreference(&blob->base);
+}
+EXPORT_SYMBOL(drm_property_unreference_blob);
+
+/**
+ * drm_property_destroy_user_blobs - destroy all blobs created by this client
+ * @dev: DRM device
+ * @file_priv: destroy all blobs owned by this file handle
+ */
+void drm_property_destroy_user_blobs(struct drm_device *dev,
+ struct drm_file *file_priv)
+{
+ struct drm_property_blob *blob, *bt;
+
+ /*
+ * When the file gets released that means no one else can access the
+ * blob list any more, so no need to grab dev->blob_lock.
+ */
+ list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
+ list_del_init(&blob->head_file);
+ drm_property_unreference_blob(blob);
+ }
+}
+
+/**
+ * drm_property_reference_blob - Take a reference on an existing property
+ *
+ * Take a new reference on an existing blob property.
+ *
+ * @blob: Pointer to blob property
+ */
+struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
+{
+ drm_mode_object_reference(&blob->base);
+ return blob;
+}
+EXPORT_SYMBOL(drm_property_reference_blob);
+
+/**
+ * drm_property_lookup_blob - look up a blob property and take a reference
+ * @dev: drm device
+ * @id: id of the blob property
+ *
+ * If successful, this takes an additional reference to the blob property.
+ * callers need to make sure to eventually unreference the returned property
+ * again, using @drm_property_unreference_blob.
+ */
+struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
+ uint32_t id)
+{
+ struct drm_mode_object *obj;
+ struct drm_property_blob *blob = NULL;
+
+ obj = __drm_mode_object_find(dev, id, DRM_MODE_OBJECT_BLOB);
+ if (obj)
+ blob = obj_to_blob(obj);
+ return blob;
+}
+EXPORT_SYMBOL(drm_property_lookup_blob);
+
+/**
+ * drm_property_replace_global_blob - atomically replace existing blob property
+ * @dev: drm device
+ * @replace: location of blob property pointer to be replaced
+ * @length: length of data for new blob, or 0 for no data
+ * @data: content for new blob, or NULL for no data
+ * @obj_holds_id: optional object for property holding blob ID
+ * @prop_holds_id: optional property holding blob ID
+ * @return 0 on success or error on failure
+ *
+ * This function will atomically replace a global property in the blob list,
+ * optionally updating a property which holds the ID of that property. It is
+ * guaranteed to be atomic: no caller will be allowed to see intermediate
+ * results, and either the entire operation will succeed and clean up the
+ * previous property, or it will fail and the state will be unchanged.
+ *
+ * If length is 0 or data is NULL, no new blob will be created, and the holding
+ * property, if specified, will be set to 0.
+ *
+ * Access to the replace pointer is assumed to be protected by the caller, e.g.
+ * by holding the relevant modesetting object lock for its parent.
+ *
+ * For example, a drm_connector has a 'PATH' property, which contains the ID
+ * of a blob property with the value of the MST path information. Calling this
+ * function with replace pointing to the connector's path_blob_ptr, length and
+ * data set for the new path information, obj_holds_id set to the connector's
+ * base object, and prop_holds_id set to the path property name, will perform
+ * a completely atomic update. The access to path_blob_ptr is protected by the
+ * caller holding a lock on the connector.
+ */
+int drm_property_replace_global_blob(struct drm_device *dev,
+ struct drm_property_blob **replace,
+ size_t length,
+ const void *data,
+ struct drm_mode_object *obj_holds_id,
+ struct drm_property *prop_holds_id)
+{
+ struct drm_property_blob *new_blob = NULL;
+ struct drm_property_blob *old_blob = NULL;
+ int ret;
+
+ WARN_ON(replace == NULL);
+
+ old_blob = *replace;
+
+ if (length && data) {
+ new_blob = drm_property_create_blob(dev, length, data);
+ if (IS_ERR(new_blob))
+ return PTR_ERR(new_blob);
+ }
+
+ /* This does not need to be synchronised with blob_lock, as the
+ * get_properties ioctl locks all modesetting objects, and
+ * obj_holds_id must be locked before calling here, so we cannot
+ * have its value out of sync with the list membership modified
+ * below under blob_lock. */
+ if (obj_holds_id) {
+ ret = drm_object_property_set_value(obj_holds_id,
+ prop_holds_id,
+ new_blob ?
+ new_blob->base.id : 0);
+ if (ret != 0)
+ goto err_created;
+ }
+
+ drm_property_unreference_blob(old_blob);
+ *replace = new_blob;
+
+ return 0;
+
+err_created:
+ drm_property_unreference_blob(new_blob);
+ return ret;
+}
+EXPORT_SYMBOL(drm_property_replace_global_blob);
+
+/**
+ * drm_mode_getblob_ioctl - get the contents of a blob property value
+ * @dev: DRM device
+ * @data: ioctl data
+ * @file_priv: DRM file info
+ *
+ * This function retrieves the contents of a blob property. The value stored in
+ * an object's blob property is just a normal modeset object id.
+ *
+ * Called by the user via ioctl.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_mode_getblob_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv)
+{
+ struct drm_mode_get_blob *out_resp = data;
+ struct drm_property_blob *blob;
+ int ret = 0;
+ void __user *blob_ptr;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ blob = drm_property_lookup_blob(dev, out_resp->blob_id);
+ if (!blob)
+ return -ENOENT;
+
+ if (out_resp->length == blob->length) {
+ blob_ptr = (void __user *)(unsigned long)out_resp->data;
+ if (copy_to_user(blob_ptr, blob->data, blob->length)) {
+ ret = -EFAULT;
+ goto unref;
+ }
+ }
+ out_resp->length = blob->length;
+unref:
+ drm_property_unreference_blob(blob);
+
+ return ret;
+}
+
+/**
+ * drm_mode_createblob_ioctl - create a new blob property
+ * @dev: DRM device
+ * @data: ioctl data
+ * @file_priv: DRM file info
+ *
+ * This function creates a new blob property with user-defined values. In order
+ * to give us sensible validation and checking when creating, rather than at
+ * every potential use, we also require a type to be provided upfront.
+ *
+ * Called by the user via ioctl.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_mode_createblob_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv)
+{
+ struct drm_mode_create_blob *out_resp = data;
+ struct drm_property_blob *blob;
+ void __user *blob_ptr;
+ int ret = 0;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ blob = drm_property_create_blob(dev, out_resp->length, NULL);
+ if (IS_ERR(blob))
+ return PTR_ERR(blob);
+
+ blob_ptr = (void __user *)(unsigned long)out_resp->data;
+ if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
+ ret = -EFAULT;
+ goto out_blob;
+ }
+
+ /* Dropping the lock between create_blob and our access here is safe
+ * as only the same file_priv can remove the blob; at this point, it is
+ * not associated with any file_priv. */
+ mutex_lock(&dev->mode_config.blob_lock);
+ out_resp->blob_id = blob->base.id;
+ list_add_tail(&blob->head_file, &file_priv->blobs);
+ mutex_unlock(&dev->mode_config.blob_lock);
+
+ return 0;
+
+out_blob:
+ drm_property_unreference_blob(blob);
+ return ret;
+}
+
+/**
+ * drm_mode_destroyblob_ioctl - destroy a user blob property
+ * @dev: DRM device
+ * @data: ioctl data
+ * @file_priv: DRM file info
+ *
+ * Destroy an existing user-defined blob property.
+ *
+ * Called by the user via ioctl.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_mode_destroyblob_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv)
+{
+ struct drm_mode_destroy_blob *out_resp = data;
+ struct drm_property_blob *blob = NULL, *bt;
+ bool found = false;
+ int ret = 0;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ blob = drm_property_lookup_blob(dev, out_resp->blob_id);
+ if (!blob)
+ return -ENOENT;
+
+ mutex_lock(&dev->mode_config.blob_lock);
+ /* Ensure the property was actually created by this user. */
+ list_for_each_entry(bt, &file_priv->blobs, head_file) {
+ if (bt == blob) {
+ found = true;
+ break;
+ }
+ }
+
+ if (!found) {
+ ret = -EPERM;
+ goto err;
+ }
+
+ /* We must drop head_file here, because we may not be the last
+ * reference on the blob. */
+ list_del_init(&blob->head_file);
+ mutex_unlock(&dev->mode_config.blob_lock);
+
+ /* One reference from lookup, and one from the filp. */
+ drm_property_unreference_blob(blob);
+ drm_property_unreference_blob(blob);
+
+ return 0;
+
+err:
+ mutex_unlock(&dev->mode_config.blob_lock);
+ drm_property_unreference_blob(blob);
+
+ return ret;
+}
+
+/* Some properties could refer to dynamic refcnt'd objects, or things that
+ * need special locking to handle lifetime issues (ie. to ensure the prop
+ * value doesn't become invalid part way through the property update due to
+ * race). The value returned by reference via 'obj' should be passed back
+ * to drm_property_change_valid_put() after the property is set (and the
+ * object to which the property is attached has a chance to take it's own
+ * reference).
+ */
+bool drm_property_change_valid_get(struct drm_property *property,
+ uint64_t value, struct drm_mode_object **ref)
+{
+ int i;
+
+ if (property->flags & DRM_MODE_PROP_IMMUTABLE)
+ return false;
+
+ *ref = NULL;
+
+ if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
+ if (value < property->values[0] || value > property->values[1])
+ return false;
+ return true;
+ } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
+ int64_t svalue = U642I64(value);
+
+ if (svalue < U642I64(property->values[0]) ||
+ svalue > U642I64(property->values[1]))
+ return false;
+ return true;
+ } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
+ uint64_t valid_mask = 0;
+
+ for (i = 0; i < property->num_values; i++)
+ valid_mask |= (1ULL << property->values[i]);
+ return !(value & ~valid_mask);
+ } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
+ struct drm_property_blob *blob;
+
+ if (value == 0)
+ return true;
+
+ blob = drm_property_lookup_blob(property->dev, value);
+ if (blob) {
+ *ref = &blob->base;
+ return true;
+ } else {
+ return false;
+ }
+ } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
+ /* a zero value for an object property translates to null: */
+ if (value == 0)
+ return true;
+
+ *ref = __drm_mode_object_find(property->dev, value,
+ property->values[0]);
+ return *ref != NULL;
+ }
+
+ for (i = 0; i < property->num_values; i++)
+ if (property->values[i] == value)
+ return true;
+ return false;
+}
+
+void drm_property_change_valid_put(struct drm_property *property,
+ struct drm_mode_object *ref)
+{
+ if (!ref)
+ return;
+
+ if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
+ drm_mode_object_unreference(ref);
+ } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
+ drm_property_unreference_blob(obj_to_blob(ref));
+}
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index f5e51e5e9724..504171257177 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -41,6 +41,7 @@
#include <drm/drm_modes.h>
#include <drm/drm_connector.h>
#include <drm/drm_encoder.h>
+#include <drm/drm_property.h>
struct drm_device;
struct drm_mode_set;
@@ -82,33 +83,6 @@ struct drm_tile_group {
u8 group_data[8];
};
-struct drm_property_blob {
- struct drm_mode_object base;
- struct drm_device *dev;
- struct list_head head_global;
- struct list_head head_file;
- size_t length;
- unsigned char data[];
-};
-
-struct drm_property_enum {
- uint64_t value;
- struct list_head head;
- char name[DRM_PROP_NAME_LEN];
-};
-
-struct drm_property {
- struct list_head head;
- struct drm_mode_object base;
- uint32_t flags;
- char name[DRM_PROP_NAME_LEN];
- uint32_t num_values;
- uint64_t *values;
- struct drm_device *dev;
-
- struct list_head enum_list;
-};
-
struct drm_crtc;
struct drm_encoder;
struct drm_pending_vblank_event;
@@ -2003,15 +1977,9 @@ struct drm_mode_config {
#define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
#define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
#define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
-#define obj_to_property(x) container_of(x, struct drm_property, base)
#define obj_to_blob(x) container_of(x, struct drm_property_blob, base)
#define obj_to_plane(x) container_of(x, struct drm_plane, base)
-struct drm_prop_enum_list {
- int type;
- char *name;
-};
-
extern __printf(6, 7)
int drm_crtc_init_with_planes(struct drm_device *dev,
struct drm_crtc *crtc,
@@ -2084,52 +2052,6 @@ extern void drm_mode_config_init(struct drm_device *dev);
extern void drm_mode_config_reset(struct drm_device *dev);
extern void drm_mode_config_cleanup(struct drm_device *dev);
-static inline bool drm_property_type_is(struct drm_property *property,
- uint32_t type)
-{
- /* instanceof for props.. handles extended type vs original types: */
- if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
- return (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) == type;
- return property->flags & type;
-}
-
-extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
- const char *name, int num_values);
-extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
- const char *name,
- const struct drm_prop_enum_list *props,
- int num_values);
-struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
- int flags, const char *name,
- const struct drm_prop_enum_list *props,
- int num_props,
- uint64_t supported_bits);
-struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
- const char *name,
- uint64_t min, uint64_t max);
-struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
- int flags, const char *name,
- int64_t min, int64_t max);
-struct drm_property *drm_property_create_object(struct drm_device *dev,
- int flags, const char *name, uint32_t type);
-struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
- const char *name);
-struct drm_property_blob *drm_property_create_blob(struct drm_device *dev,
- size_t length,
- const void *data);
-struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
- uint32_t id);
-int drm_property_replace_global_blob(struct drm_device *dev,
- struct drm_property_blob **replace,
- size_t length,
- const void *data,
- struct drm_mode_object *obj_holds_id,
- struct drm_property *prop_holds_id);
-struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob);
-void drm_property_unreference_blob(struct drm_property_blob *blob);
-extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
-extern int drm_property_add_enum(struct drm_property *property, int index,
- uint64_t value, const char *name);
extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
int gamma_size);
@@ -2179,14 +2101,6 @@ static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,
return mo ? obj_to_crtc(mo) : NULL;
}
-static inline struct drm_property *drm_property_find(struct drm_device *dev,
- uint32_t id)
-{
- struct drm_mode_object *mo;
- mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PROPERTY);
- return mo ? obj_to_property(mo) : NULL;
-}
-
/*
* Extract a degamma/gamma LUT value provided by user and round it to the
* precision supported by the hardware.
diff --git a/include/drm/drm_property.h b/include/drm/drm_property.h
new file mode 100644
index 000000000000..ac40069358c7
--- /dev/null
+++ b/include/drm/drm_property.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef __DRM_PROPERTY_H__
+#define __DRM_PROPERTY_H__
+
+#include <linux/list.h>
+#include <linux/ctype.h>
+#include <drm/drm_mode_object.h>
+
+struct drm_property_blob {
+ struct drm_mode_object base;
+ struct drm_device *dev;
+ struct list_head head_global;
+ struct list_head head_file;
+ size_t length;
+ unsigned char data[];
+};
+
+struct drm_property_enum {
+ uint64_t value;
+ struct list_head head;
+ char name[DRM_PROP_NAME_LEN];
+};
+
+struct drm_property {
+ struct list_head head;
+ struct drm_mode_object base;
+ uint32_t flags;
+ char name[DRM_PROP_NAME_LEN];
+ uint32_t num_values;
+ uint64_t *values;
+ struct drm_device *dev;
+
+ struct list_head enum_list;
+};
+
+struct drm_prop_enum_list {
+ int type;
+ char *name;
+};
+
+#define obj_to_property(x) container_of(x, struct drm_property, base)
+
+static inline bool drm_property_type_is(struct drm_property *property,
+ uint32_t type)
+{
+ /* instanceof for props.. handles extended type vs original types: */
+ if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
+ return (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) == type;
+ return property->flags & type;
+}
+
+struct drm_property *drm_property_create(struct drm_device *dev, int flags,
+ const char *name, int num_values);
+struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
+ const char *name,
+ const struct drm_prop_enum_list *props,
+ int num_values);
+struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
+ int flags, const char *name,
+ const struct drm_prop_enum_list *props,
+ int num_props,
+ uint64_t supported_bits);
+struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
+ const char *name,
+ uint64_t min, uint64_t max);
+struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
+ int flags, const char *name,
+ int64_t min, int64_t max);
+struct drm_property *drm_property_create_object(struct drm_device *dev,
+ int flags, const char *name, uint32_t type);
+struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
+ const char *name);
+int drm_property_add_enum(struct drm_property *property, int index,
+ uint64_t value, const char *name);
+void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
+
+struct drm_property_blob *drm_property_create_blob(struct drm_device *dev,
+ size_t length,
+ const void *data);
+struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
+ uint32_t id);
+int drm_property_replace_global_blob(struct drm_device *dev,
+ struct drm_property_blob **replace,
+ size_t length,
+ const void *data,
+ struct drm_mode_object *obj_holds_id,
+ struct drm_property *prop_holds_id);
+struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob);
+void drm_property_unreference_blob(struct drm_property_blob *blob);
+
+static inline struct drm_property *drm_property_find(struct drm_device *dev,
+ uint32_t id)
+{
+ struct drm_mode_object *mo;
+ mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PROPERTY);
+ return mo ? obj_to_property(mo) : NULL;
+}
+
+#endif
--
2.8.1
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [PATCH 8/9] drm: Unify handling of blob and object properties
2016-08-17 20:55 [PATCH 1/9] drm: Extract drm_encoder.[hc] Daniel Vetter
` (5 preceding siblings ...)
2016-08-17 20:56 ` [PATCH 7/9] drm: Extract drm_property.[hc] Daniel Vetter
@ 2016-08-17 20:56 ` Daniel Vetter
2016-08-25 12:26 ` Archit Taneja
2016-08-17 20:56 ` [PATCH 9/9] drm/doc: Polish docs for drm_property&drm_property_blob Daniel Vetter
` (2 subsequent siblings)
9 siblings, 1 reply; 24+ messages in thread
From: Daniel Vetter @ 2016-08-17 20:56 UTC (permalink / raw)
To: DRI Development; +Cc: Daniel Vetter, Intel Graphics Development, Daniel Stone
They work exactly the same now, after the refcounting unification a bit
ago. The only reason they're distinct is backwards compat with existing
userspace.
Cc: Daniel Stone <daniels@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
drivers/gpu/drm/drm_property.c | 23 +++++------------------
1 file changed, 5 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/drm_property.c b/drivers/gpu/drm/drm_property.c
index 162cc9032ae5..b5521f705b1c 100644
--- a/drivers/gpu/drm/drm_property.c
+++ b/drivers/gpu/drm/drm_property.c
@@ -911,20 +911,8 @@ bool drm_property_change_valid_get(struct drm_property *property,
for (i = 0; i < property->num_values; i++)
valid_mask |= (1ULL << property->values[i]);
return !(value & ~valid_mask);
- } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
- struct drm_property_blob *blob;
-
- if (value == 0)
- return true;
-
- blob = drm_property_lookup_blob(property->dev, value);
- if (blob) {
- *ref = &blob->base;
- return true;
- } else {
- return false;
- }
- } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
+ } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB) ||
+ drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
/* a zero value for an object property translates to null: */
if (value == 0)
return true;
@@ -941,13 +929,12 @@ bool drm_property_change_valid_get(struct drm_property *property,
}
void drm_property_change_valid_put(struct drm_property *property,
- struct drm_mode_object *ref)
+ struct drm_mode_object *ref)
{
if (!ref)
return;
- if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
+ if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT) ||
+ drm_property_type_is(property, DRM_MODE_PROP_BLOB))
drm_mode_object_unreference(ref);
- } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
- drm_property_unreference_blob(obj_to_blob(ref));
}
--
2.8.1
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 24+ messages in thread
* [PATCH 9/9] drm/doc: Polish docs for drm_property&drm_property_blob
2016-08-17 20:55 [PATCH 1/9] drm: Extract drm_encoder.[hc] Daniel Vetter
` (6 preceding siblings ...)
2016-08-17 20:56 ` [PATCH 8/9] drm: Unify handling of blob and object properties Daniel Vetter
@ 2016-08-17 20:56 ` Daniel Vetter
2016-08-18 7:39 ` ✗ Ro.CI.BAT: failure for series starting with [1/9] drm: Extract drm_encoder.[hc] Patchwork
2016-08-25 12:23 ` [PATCH 1/9] " Archit Taneja
9 siblings, 0 replies; 24+ messages in thread
From: Daniel Vetter @ 2016-08-17 20:56 UTC (permalink / raw)
To: DRI Development; +Cc: Daniel Vetter, Intel Graphics Development, Daniel Vetter
- remove kerneldoc for drm-internal functions
- drm_property_replace_global_blob isn't actually atomic, and doesn't
need to be. Update docs&comments to match
- document all the types and try to link things a bit better
- nits all over
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
---
Documentation/gpu/drm-kms.rst | 88 +-----------------
drivers/gpu/drm/drm_property.c | 153 ++++++++++++--------------------
include/drm/drm_property.h | 196 ++++++++++++++++++++++++++++++++++++++---
3 files changed, 244 insertions(+), 193 deletions(-)
diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
index e07a2667ab61..f9a991bb87d4 100644
--- a/Documentation/gpu/drm-kms.rst
+++ b/Documentation/gpu/drm-kms.rst
@@ -304,94 +304,12 @@ KMS Locking
KMS Properties
==============
-Drivers may need to expose additional parameters to applications than
-those described in the previous sections. KMS supports attaching
-properties to CRTCs, connectors and planes and offers a userspace API to
-list, get and set the property values.
-
-Properties are identified by a name that uniquely defines the property
-purpose, and store an associated value. For all property types except
-blob properties the value is a 64-bit unsigned integer.
-
-KMS differentiates between properties and property instances. Drivers
-first create properties and then create and associate individual
-instances of those properties to objects. A property can be instantiated
-multiple times and associated with different objects. Values are stored
-in property instances, and all other property information are stored in
-the property and shared between all instances of the property.
-
-Every property is created with a type that influences how the KMS core
-handles the property. Supported property types are
-
-DRM_MODE_PROP_RANGE
- Range properties report their minimum and maximum admissible values.
- The KMS core verifies that values set by application fit in that
- range.
-
-DRM_MODE_PROP_ENUM
- Enumerated properties take a numerical value that ranges from 0 to
- the number of enumerated values defined by the property minus one,
- and associate a free-formed string name to each value. Applications
- can retrieve the list of defined value-name pairs and use the
- numerical value to get and set property instance values.
-
-DRM_MODE_PROP_BITMASK
- Bitmask properties are enumeration properties that additionally
- restrict all enumerated values to the 0..63 range. Bitmask property
- instance values combine one or more of the enumerated bits defined
- by the property.
-
-DRM_MODE_PROP_BLOB
- Blob properties store a binary blob without any format restriction.
- The binary blobs are created as KMS standalone objects, and blob
- property instance values store the ID of their associated blob
- object.
-
- Blob properties are only used for the connector EDID property and
- cannot be created by drivers.
-
-To create a property drivers call one of the following functions
-depending on the property type. All property creation functions take
-property flags and name, as well as type-specific arguments.
-
-- struct drm_property \*drm_property_create_range(struct
- drm_device \*dev, int flags, const char \*name, uint64_t min,
- uint64_t max);
- Create a range property with the given minimum and maximum values.
-
-- struct drm_property \*drm_property_create_enum(struct drm_device
- \*dev, int flags, const char \*name, const struct
- drm_prop_enum_list \*props, int num_values);
- Create an enumerated property. The ``props`` argument points to an
- array of ``num_values`` value-name pairs.
-
-- struct drm_property \*drm_property_create_bitmask(struct
- drm_device \*dev, int flags, const char \*name, const struct
- drm_prop_enum_list \*props, int num_values);
- Create a bitmask property. The ``props`` argument points to an array
- of ``num_values`` value-name pairs.
-
-Properties can additionally be created as immutable, in which case they
-will be read-only for applications but can be modified by the driver. To
-create an immutable property drivers must set the
-DRM_MODE_PROP_IMMUTABLE flag at property creation time.
-
-When no array of value-name pairs is readily available at property
-creation time for enumerated or range properties, drivers can create the
-property using the :c:func:`drm_property_create()` function and
-manually add enumeration value-name pairs by calling the
-:c:func:`drm_property_add_enum()` function. Care must be taken to
-properly specify the property type through the ``flags`` argument.
-
-After creating properties drivers can attach property instances to CRTC,
-connector and plane objects by calling the
-:c:func:`drm_object_attach_property()`. The function takes a
-pointer to the target object, a pointer to the previously created
-property and an initial instance value.
-
Property Types and Blob Property Support
----------------------------------------
+.. kernel-doc:: drivers/gpu/drm/drm_property.c
+ :doc: overview
+
.. kernel-doc:: include/drm/drm_property.h
:internal:
diff --git a/drivers/gpu/drm/drm_property.c b/drivers/gpu/drm/drm_property.c
index b5521f705b1c..4139afbcc267 100644
--- a/drivers/gpu/drm/drm_property.c
+++ b/drivers/gpu/drm/drm_property.c
@@ -26,6 +26,30 @@
#include "drm_crtc_internal.h"
+/**
+ * DOC: overview
+ *
+ * Properties as represented by &drm_property are used to extend the modeset
+ * interface exposed to userspace. For the atomic modeset IOCTL properties are
+ * even the only way to transport metadata about the desired new modeset
+ * configuration from userspace to the kernel. Properties have a well-defined
+ * value range, which is enforced by the drm core. See the documentation of the
+ * flags member of struct &drm_property for an overview of the different
+ * property types and ranges.
+ *
+ * Properties don't store the current value directly, but need to be
+ * instatiated by attaching them to a &drm_mode_object with
+ * drm_object_attach_property().
+ *
+ * Property values are only 64bit. To support bigger piles of data (like gamma
+ * tables, color correction matrizes or large structures) a property can instead
+ * point at a &drm_property_blob with that additional data
+ *
+ * Properties are defined by their symbolic name, userspace must keep a
+ * per-object mapping from those names to the property ID used in the atomic
+ * IOCTL and in the get/set property IOCTL.
+ */
+
static bool drm_property_type_valid(struct drm_property *property)
{
if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
@@ -42,11 +66,8 @@ static bool drm_property_type_valid(struct drm_property *property)
*
* This creates a new generic drm property which can then be attached to a drm
* object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Note that the DRM core keeps a per-device list of properties and that, if
- * drm_mode_config_cleanup() is called, it will destroy all properties created
- * by the driver.
+ * freed with drm_property_destroy(), which is done automatically when calling
+ * drm_mode_config_cleanup().
*
* Returns:
* A pointer to the newly created property on success, NULL on failure.
@@ -105,7 +126,8 @@ EXPORT_SYMBOL(drm_property_create);
*
* This creates a new generic drm property which can then be attached to a drm
* object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
+ * freed with drm_property_destroy(), which is done automatically when calling
+ * drm_mode_config_cleanup().
*
* Userspace is only allowed to set one of the predefined values for enumeration
* properties.
@@ -152,7 +174,8 @@ EXPORT_SYMBOL(drm_property_create_enum);
*
* This creates a new bitmask drm property which can then be attached to a drm
* object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
+ * freed with drm_property_destroy(), which is done automatically when calling
+ * drm_mode_config_cleanup().
*
* Compared to plain enumeration properties userspace is allowed to set any
* or'ed together combination of the predefined property bitflag values
@@ -223,7 +246,8 @@ static struct drm_property *property_create_range(struct drm_device *dev,
*
* This creates a new generic drm property which can then be attached to a drm
* object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
+ * freed with drm_property_destroy(), which is done automatically when calling
+ * drm_mode_config_cleanup().
*
* Userspace is allowed to set any unsigned integer value in the (min, max)
* range inclusive.
@@ -250,7 +274,8 @@ EXPORT_SYMBOL(drm_property_create_range);
*
* This creates a new generic drm property which can then be attached to a drm
* object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
+ * freed with drm_property_destroy(), which is done automatically when calling
+ * drm_mode_config_cleanup().
*
* Userspace is allowed to set any signed integer value in the (min, max)
* range inclusive.
@@ -276,7 +301,8 @@ EXPORT_SYMBOL(drm_property_create_signed_range);
*
* This creates a new generic drm property which can then be attached to a drm
* object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
+ * freed with drm_property_destroy(), which is done automatically when calling
+ * drm_mode_config_cleanup().
*
* Userspace is only allowed to set this to any property value of the given
* @type. Only useful for atomic properties, which is enforced.
@@ -285,7 +311,8 @@ EXPORT_SYMBOL(drm_property_create_signed_range);
* A pointer to the newly created property on success, NULL on failure.
*/
struct drm_property *drm_property_create_object(struct drm_device *dev,
- int flags, const char *name, uint32_t type)
+ int flags, const char *name,
+ uint32_t type)
{
struct drm_property *property;
@@ -312,7 +339,8 @@ EXPORT_SYMBOL(drm_property_create_object);
*
* This creates a new generic drm property which can then be attached to a drm
* object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
+ * freed with drm_property_destroy(), which is done automatically when calling
+ * drm_mode_config_cleanup().
*
* This is implemented as a ranged property with only {0, 1} as valid values.
*
@@ -320,7 +348,7 @@ EXPORT_SYMBOL(drm_property_create_object);
* A pointer to the newly created property on success, NULL on failure.
*/
struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
- const char *name)
+ const char *name)
{
return drm_property_create_range(dev, flags, name, 0, 1);
}
@@ -407,22 +435,6 @@ void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
}
EXPORT_SYMBOL(drm_property_destroy);
-/**
- * drm_mode_getproperty_ioctl - get the property metadata
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * This function retrieves the metadata for a given property, like the different
- * possible values for an enum property or the limits for a range property.
- *
- * Blob properties are special
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
int drm_mode_getproperty_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
@@ -523,14 +535,14 @@ static void drm_property_free_blob(struct kref *kref)
/**
* drm_property_create_blob - Create new blob property
- *
- * Creates a new blob property for a specified DRM device, optionally
- * copying data.
- *
* @dev: DRM device to create property for
* @length: Length to allocate for blob data
* @data: If specified, copies data into blob
*
+ * Creates a new blob property for a specified DRM device, optionally
+ * copying data. Note that blob properties are meant to be invariant, hence the
+ * data must be filled out before the blob is used as the value of any property.
+ *
* Returns:
* New blob property with a single reference on success, or an ERR_PTR
* value on failure.
@@ -576,10 +588,9 @@ EXPORT_SYMBOL(drm_property_create_blob);
/**
* drm_property_unreference_blob - Unreference a blob property
+ * @blob: Pointer to blob property
*
* Drop a reference on a blob property. May free the object.
- *
- * @blob: Pointer to blob property
*/
void drm_property_unreference_blob(struct drm_property_blob *blob)
{
@@ -590,11 +601,6 @@ void drm_property_unreference_blob(struct drm_property_blob *blob)
}
EXPORT_SYMBOL(drm_property_unreference_blob);
-/**
- * drm_property_destroy_user_blobs - destroy all blobs created by this client
- * @dev: DRM device
- * @file_priv: destroy all blobs owned by this file handle
- */
void drm_property_destroy_user_blobs(struct drm_device *dev,
struct drm_file *file_priv)
{
@@ -612,10 +618,10 @@ void drm_property_destroy_user_blobs(struct drm_device *dev,
/**
* drm_property_reference_blob - Take a reference on an existing property
- *
- * Take a new reference on an existing blob property.
- *
* @blob: Pointer to blob property
+ *
+ * Take a new reference on an existing blob property. Returns @blob, which
+ * allows this to be used as a shorthand in assignments.
*/
struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
{
@@ -632,6 +638,9 @@ EXPORT_SYMBOL(drm_property_reference_blob);
* If successful, this takes an additional reference to the blob property.
* callers need to make sure to eventually unreference the returned property
* again, using @drm_property_unreference_blob.
+ *
+ * Return:
+ * NULL on failure, pointer to the blob on success.
*/
struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
uint32_t id)
@@ -647,7 +656,7 @@ struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
EXPORT_SYMBOL(drm_property_lookup_blob);
/**
- * drm_property_replace_global_blob - atomically replace existing blob property
+ * drm_property_replace_global_blob - replace existing blob property
* @dev: drm device
* @replace: location of blob property pointer to be replaced
* @length: length of data for new blob, or 0 for no data
@@ -656,11 +665,8 @@ EXPORT_SYMBOL(drm_property_lookup_blob);
* @prop_holds_id: optional property holding blob ID
* @return 0 on success or error on failure
*
- * This function will atomically replace a global property in the blob list,
- * optionally updating a property which holds the ID of that property. It is
- * guaranteed to be atomic: no caller will be allowed to see intermediate
- * results, and either the entire operation will succeed and clean up the
- * previous property, or it will fail and the state will be unchanged.
+ * This function will replace a global property in the blob list, optionally
+ * updating a property which holds the ID of that property.
*
* If length is 0 or data is NULL, no new blob will be created, and the holding
* property, if specified, will be set to 0.
@@ -697,11 +703,6 @@ int drm_property_replace_global_blob(struct drm_device *dev,
return PTR_ERR(new_blob);
}
- /* This does not need to be synchronised with blob_lock, as the
- * get_properties ioctl locks all modesetting objects, and
- * obj_holds_id must be locked before calling here, so we cannot
- * have its value out of sync with the list membership modified
- * below under blob_lock. */
if (obj_holds_id) {
ret = drm_object_property_set_value(obj_holds_id,
prop_holds_id,
@@ -722,20 +723,6 @@ err_created:
}
EXPORT_SYMBOL(drm_property_replace_global_blob);
-/**
- * drm_mode_getblob_ioctl - get the contents of a blob property value
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * This function retrieves the contents of a blob property. The value stored in
- * an object's blob property is just a normal modeset object id.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
int drm_mode_getblob_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
@@ -765,21 +752,6 @@ unref:
return ret;
}
-/**
- * drm_mode_createblob_ioctl - create a new blob property
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * This function creates a new blob property with user-defined values. In order
- * to give us sensible validation and checking when creating, rather than at
- * every potential use, we also require a type to be provided upfront.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
int drm_mode_createblob_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
@@ -816,19 +788,6 @@ out_blob:
return ret;
}
-/**
- * drm_mode_destroyblob_ioctl - destroy a user blob property
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * Destroy an existing user-defined blob property.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
int drm_mode_destroyblob_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
@@ -885,7 +844,7 @@ err:
* reference).
*/
bool drm_property_change_valid_get(struct drm_property *property,
- uint64_t value, struct drm_mode_object **ref)
+ uint64_t value, struct drm_mode_object **ref)
{
int i;
diff --git a/include/drm/drm_property.h b/include/drm/drm_property.h
index ac40069358c7..d2e60fb7bbc0 100644
--- a/include/drm/drm_property.h
+++ b/include/drm/drm_property.h
@@ -27,33 +27,192 @@
#include <linux/ctype.h>
#include <drm/drm_mode_object.h>
-struct drm_property_blob {
- struct drm_mode_object base;
- struct drm_device *dev;
- struct list_head head_global;
- struct list_head head_file;
- size_t length;
- unsigned char data[];
-};
-
+/**
+ * struct drm_property_enum - symbolic values for enumerations
+ * @value: numeric property value for this enum entry
+ * @head: list of enum values, linked to enum_list in &drm_property
+ * @name: symbolic name for the enum
+ *
+ * For enumeration and bitmask properties this structure stores the symbolic
+ * decoding for each value. This is used for example for the rotation property.
+ */
struct drm_property_enum {
uint64_t value;
struct list_head head;
char name[DRM_PROP_NAME_LEN];
};
+/**
+ * struct drm_property - modeset object property
+ *
+ * This structure represent a modeset object property. It combines both the name
+ * of the property with the set of permissible values. This means that when a
+ * driver wants to use a property with the same name on different objects, but
+ * with different value ranges, then it must create property for each one. An
+ * example would be rotation of &drm_plane, when e.g. the primary plane cannot
+ * be rotated. But if both the name and the value range match, then the same
+ * property structure can be instantiated multiple times for the same object.
+ * Userspace must be able to cope with this and cannot assume that the same
+ * symbolic property will have the same modeset object ID on all modeset
+ * objects.
+ *
+ * Properties are created by one of the special functions, as explained in
+ * detail in the @flags structure member.
+ *
+ * To actually expose a property it must be attached to each object using
+ * drm_object_attach_property(). Currently properties can only be attached to
+ * &drm_connector, &drm_crtc and &drm_plane.
+ *
+ * Properties are also used as the generic metadatatransport for the atomic
+ * IOCTL. Everything that was set directly in structures in the legacy modeset
+ * IOCTLs (like the plane source or destination windows, or e.g. the links to
+ * the CRTC) is exposed as a property with the DRM_MODE_PROP_ATOMIC flag set.
+ */
struct drm_property {
+ /**
+ * @head: per-device list of properties, for cleanup.
+ */
struct list_head head;
+
+ /**
+ * @base: base KMS object
+ */
struct drm_mode_object base;
+
+ /**
+ * @flags:
+ *
+ * Property flags and type. A property needs to be one of the following
+ * types:
+ *
+ * DRM_MODE_PROP_RANGE
+ * Range properties report their minimum and maximum admissible unsigned values.
+ * The KMS core verifies that values set by application fit in that
+ * range. The range is unsigned. Range properties are created using
+ * drm_property_create_range().
+ *
+ * DRM_MODE_PROP_SIGNED_RANGE
+ * Range properties report their minimum and maximum admissible unsigned values.
+ * The KMS core verifies that values set by application fit in that
+ * range. The range is signed. Range properties are created using
+ * drm_property_create_signed_range().
+ *
+ * DRM_MODE_PROP_ENUM
+ * Enumerated properties take a numerical value that ranges from 0 to
+ * the number of enumerated values defined by the property minus one,
+ * and associate a free-formed string name to each value. Applications
+ * can retrieve the list of defined value-name pairs and use the
+ * numerical value to get and set property instance values. Enum
+ * properties are created using drm_property_create_enum().
+ *
+ * DRM_MODE_PROP_BITMASK
+ * Bitmask properties are enumeration properties that additionally
+ * restrict all enumerated values to the 0..63 range. Bitmask property
+ * instance values combine one or more of the enumerated bits defined
+ * by the property. Bitmask properties are created using
+ * drm_property_create_bitmask().
+ *
+ * DRM_MODE_PROB_OBJECT
+ * Object properties are used to link modeset objects. This is used
+ * extensively in the atomic support to create the display pipeline,
+ * by linking &drm_framebuffer to &drm_plane, &drm_plane to
+ * &drm_crtc and &drm_connector to &drm_crtc. An object property can
+ * only link to a specific type of &drm_mode_object, this limit is
+ * enforced by the core. Object properties are created using
+ * drm_property_create_object().
+ *
+ * Object properties work like blob properties, but in a more
+ * general fashion. They are limited to atomic drivers and must have
+ * the DRM_MODE_PROP_ATOMIC flag set.
+ *
+ * DRM_MODE_PROP_BLOB
+ * Blob properties store a binary blob without any format restriction.
+ * The binary blobs are created as KMS standalone objects, and blob
+ * property instance values store the ID of their associated blob
+ * object. Blob properties are created by calling
+ * drm_property_create() with DRM_MODE_PROP_BLOB as the type.
+ *
+ * Actual blob objects to contain blob data are created using
+ * drm_property_create_blob(), or through the corresponding IOCTL.
+ *
+ * Besides the built-in limit to only accept blob objects blob
+ * properties work exactly like object properties. The only reasons
+ * blob properties exist is backwards compatibility with existing
+ * userspace.
+ *
+ * In addition a property can have any combination of the below flags:
+ *
+ * DRM_MODE_PROP_ATOMIC
+ * Set for properties which encode atomic modeset state. Such
+ * properties are not exposed to legacy userspace.
+ *
+ * DRM_MODE_PROP_IMMUTABLE
+ * Set for properties where userspace cannot be changed by
+ * userspace. The kernel is allowed to update the value of these
+ * properties. This is generally used to expose probe state to
+ * usersapce, e.g. the EDID, or the connector path property on DP
+ * MST sinks.
+ */
uint32_t flags;
+
+ /**
+ * @name: symbolic name of the properties
+ */
char name[DRM_PROP_NAME_LEN];
+
+ /**
+ * @num_values: size of the @values array.
+ */
uint32_t num_values;
+
+ /**
+ * @values:
+ *
+ * Array with limits and values for the property. The
+ * interpretation of these limits is dependent upon the type per @flags.
+ */
uint64_t *values;
+
+ /**
+ * @dev: DRM device
+ */
struct drm_device *dev;
+ /**
+ * @enum_list:
+ *
+ * List of &drm_prop_enum_list structures with the symbolic names for
+ * enum and bitmask values.
+ */
struct list_head enum_list;
};
+/**
+ * struct drm_property_blob - Blob data for &drm_property
+ * @base: base KMS object
+ * @dev: DRM device
+ * @head_global: entry on the global blob list in &drm_mode_config
+ * property_blob_list.
+ * @head_file: entry on the per-file blob list in &drm_file blobs list.
+ * @length: size of the blob in bytes, invariant over the lifetime of the object
+ * @data: actual data, embedded at the end of this structure
+ *
+ * Blobs are used to store bigger values than what fits directly into the 64
+ * bits available for a &drm_property.
+ *
+ * Blobs are reference counted using drm_property_reference_blob() and
+ * drm_property_unreference_blob(). They are created using
+ * drm_property_create_blob().
+ */
+struct drm_property_blob {
+ struct drm_mode_object base;
+ struct drm_device *dev;
+ struct list_head head_global;
+ struct list_head head_file;
+ size_t length;
+ unsigned char data[];
+};
+
struct drm_prop_enum_list {
int type;
char *name;
@@ -61,8 +220,16 @@ struct drm_prop_enum_list {
#define obj_to_property(x) container_of(x, struct drm_property, base)
+/**
+ * drm_property_type_is - check the type of a property
+ * @property: property to check
+ * @type: property type to compare with
+ *
+ * This is a helper function becauase the uapi encoding of property types is
+ * a bit special for historical reasons.
+ */
static inline bool drm_property_type_is(struct drm_property *property,
- uint32_t type)
+ uint32_t type)
{
/* instanceof for props.. handles extended type vs original types: */
if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
@@ -109,8 +276,15 @@ int drm_property_replace_global_blob(struct drm_device *dev,
struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob);
void drm_property_unreference_blob(struct drm_property_blob *blob);
+/**
+ * drm_connector_find - find property object
+ * @dev: DRM device
+ * @id: property object id
+ *
+ * This function looks up the property object specified by id and returns it.
+ */
static inline struct drm_property *drm_property_find(struct drm_device *dev,
- uint32_t id)
+ uint32_t id)
{
struct drm_mode_object *mo;
mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PROPERTY);
--
2.8.1
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^ permalink raw reply related [flat|nested] 24+ messages in thread
* ✗ Ro.CI.BAT: failure for series starting with [1/9] drm: Extract drm_encoder.[hc]
2016-08-17 20:55 [PATCH 1/9] drm: Extract drm_encoder.[hc] Daniel Vetter
` (7 preceding siblings ...)
2016-08-17 20:56 ` [PATCH 9/9] drm/doc: Polish docs for drm_property&drm_property_blob Daniel Vetter
@ 2016-08-18 7:39 ` Patchwork
2016-08-25 12:23 ` [PATCH 1/9] " Archit Taneja
9 siblings, 0 replies; 24+ messages in thread
From: Patchwork @ 2016-08-18 7:39 UTC (permalink / raw)
To: Daniel Vetter; +Cc: intel-gfx
== Series Details ==
Series: series starting with [1/9] drm: Extract drm_encoder.[hc]
URL : https://patchwork.freedesktop.org/series/11235/
State : failure
== Summary ==
Series 11235v1 Series without cover letter
http://patchwork.freedesktop.org/api/1.0/series/11235/revisions/1/mbox
Test kms_cursor_legacy:
Subgroup basic-flip-vs-cursor-legacy:
pass -> FAIL (ro-skl3-i5-6260u)
fail -> PASS (ro-bdw-i5-5250u)
Subgroup basic-flip-vs-cursor-varying-size:
pass -> FAIL (ro-bdw-i5-5250u)
Test kms_pipe_crc_basic:
Subgroup suspend-read-crc-pipe-a:
skip -> DMESG-WARN (ro-bdw-i7-5557U)
Subgroup suspend-read-crc-pipe-b:
pass -> DMESG-WARN (ro-bdw-i7-5600u)
fi-kbl-qkkr total:244 pass:187 dwarn:28 dfail:0 fail:3 skip:26
fi-skl-i7-6700k total:244 pass:208 dwarn:4 dfail:2 fail:2 skip:28
fi-snb-i7-2600 total:244 pass:202 dwarn:0 dfail:0 fail:0 skip:42
ro-bdw-i5-5250u total:240 pass:219 dwarn:1 dfail:0 fail:1 skip:19
ro-bdw-i7-5557U total:240 pass:220 dwarn:3 dfail:0 fail:0 skip:17
ro-bdw-i7-5600u total:240 pass:206 dwarn:1 dfail:0 fail:1 skip:32
ro-bsw-n3050 total:240 pass:194 dwarn:0 dfail:0 fail:4 skip:42
ro-hsw-i3-4010u total:240 pass:214 dwarn:0 dfail:0 fail:0 skip:26
ro-hsw-i7-4770r total:240 pass:185 dwarn:0 dfail:0 fail:0 skip:55
ro-ilk1-i5-650 total:235 pass:174 dwarn:0 dfail:0 fail:1 skip:60
ro-ivb-i7-3770 total:240 pass:205 dwarn:0 dfail:0 fail:0 skip:35
ro-ivb2-i7-3770 total:240 pass:209 dwarn:0 dfail:0 fail:0 skip:31
ro-skl3-i5-6260u total:240 pass:222 dwarn:0 dfail:0 fail:4 skip:14
ro-byt-n2820 failed to connect after reboot
Results at /archive/results/CI_IGT_test/RO_Patchwork_1914/
e45fdef drm-intel-nightly: 2016y-08m-17d-13h-26m-04s UTC integration manifest
527eecb drm/doc: Polish docs for drm_property&drm_property_blob
a0d2396 drm: Unify handling of blob and object properties
bb1caf4 drm: Extract drm_property.[hc]
4713815 drm: move drm_mode_legacy_fb_format to drm_fourcc.c
0c96b5b drm/doc: Polish docs for drm_mode_object
9fada67 drm: Remove drm_mode_object->atomic_count
41e5370 drm: Extract drm_mode_object.[hc]
00ebba4 drm/doc: Polish kerneldoc for encoders
2830bc8 drm: Extract drm_encoder.[hc]
_______________________________________________
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Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [PATCH 7/9] drm: Extract drm_property.[hc]
2016-08-17 20:56 ` [PATCH 7/9] drm: Extract drm_property.[hc] Daniel Vetter
@ 2016-08-18 11:11 ` Emil Velikov
2016-08-18 13:11 ` Daniel Vetter
2016-08-25 12:25 ` Archit Taneja
1 sibling, 1 reply; 24+ messages in thread
From: Emil Velikov @ 2016-08-18 11:11 UTC (permalink / raw)
To: Daniel Vetter; +Cc: Daniel Vetter, Intel Graphics Development, DRI Development
Hi Daniel,
On 17 August 2016 at 21:56, Daniel Vetter <daniel.vetter@ffwll.ch> wrote:
> --- /dev/null
> +++ b/include/drm/drm_property.h
> +#ifndef __DRM_PROPERTY_H__
> +#define __DRM_PROPERTY_H__
> +
> +#include <linux/list.h>
> +#include <linux/ctype.h>
> +#include <drm/drm_mode_object.h>
> +
Add the following fwd declaration since we use a pointer to the said
struct ? From a brief look the other newly introduced headers
could/should use it as well.
struct drm_device;
The declarations in include/drm should be the ones meant for drivers
and there's no core drm internal ones ? Where/how does one manage API
that should be kept private between the different core DRM components,
even if there's symbol dependency between the different modules ?
Thanks !
Emil
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^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [PATCH 7/9] drm: Extract drm_property.[hc]
2016-08-18 11:11 ` Emil Velikov
@ 2016-08-18 13:11 ` Daniel Vetter
0 siblings, 0 replies; 24+ messages in thread
From: Daniel Vetter @ 2016-08-18 13:11 UTC (permalink / raw)
To: Emil Velikov
Cc: Daniel Vetter, Intel Graphics Development, DRI Development,
Daniel Vetter
On Thu, Aug 18, 2016 at 12:11:35PM +0100, Emil Velikov wrote:
> Hi Daniel,
>
> On 17 August 2016 at 21:56, Daniel Vetter <daniel.vetter@ffwll.ch> wrote:
> > --- /dev/null
> > +++ b/include/drm/drm_property.h
>
> > +#ifndef __DRM_PROPERTY_H__
> > +#define __DRM_PROPERTY_H__
> > +
> > +#include <linux/list.h>
> > +#include <linux/ctype.h>
> > +#include <drm/drm_mode_object.h>
> > +
> Add the following fwd declaration since we use a pointer to the said
> struct ? From a brief look the other newly introduced headers
> could/should use it as well.
>
> struct drm_device;
tbh this is only a half-useful attempt at untangling the header loop mess.
Once drm_crtc.[hc] is fully split I guess we can look into what makes
sense. I'll definitely be happy to review patches, but personally I don't
mind loops in headers much. It's annoying, but as long as things are
reasonably split and it's possible to untangle at least the
code/structures and documentation itself I'm happy.
Wrt all things drm_device: I'm not sure when (if ever) I'll cough up the
courage to split up and untangle drmP.h ;-)
> The declarations in include/drm should be the ones meant for drivers
> and there's no core drm internal ones ? Where/how does one manage API
> that should be kept private between the different core DRM components,
> even if there's symbol dependency between the different modules ?
drm_crtc_helper_internal.h, drm_crtc_internal.h and drm_internal.h, all in
drivers/gpu/drm/
Cheers, Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [PATCH 1/9] drm: Extract drm_encoder.[hc]
2016-08-17 20:55 [PATCH 1/9] drm: Extract drm_encoder.[hc] Daniel Vetter
` (8 preceding siblings ...)
2016-08-18 7:39 ` ✗ Ro.CI.BAT: failure for series starting with [1/9] drm: Extract drm_encoder.[hc] Patchwork
@ 2016-08-25 12:23 ` Archit Taneja
2016-08-25 19:38 ` Daniel Vetter
9 siblings, 1 reply; 24+ messages in thread
From: Archit Taneja @ 2016-08-25 12:23 UTC (permalink / raw)
To: Daniel Vetter, DRI Development; +Cc: Daniel Vetter, Intel Graphics Development
Hi,
On 08/18/2016 02:25 AM, Daniel Vetter wrote:
> Same treatment as before. Only hiccup is drm_crtc_mask, which
> unfortunately can't be resolved until drm_crtc.h is less of a monster.
> Untangle the header loop with a forward delcaration for that static
s/delcaration/declaration
> inline.
>
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> ---
> Documentation/gpu/drm-kms.rst | 9 ++
> drivers/gpu/drm/Makefile | 3 +-
> drivers/gpu/drm/drm_crtc.c | 193 -------------------------------
> drivers/gpu/drm/drm_crtc_internal.h | 10 +-
> drivers/gpu/drm/drm_encoder.c | 220 ++++++++++++++++++++++++++++++++++++
> include/drm/drm_crtc.h | 134 +---------------------
> include/drm/drm_encoder.h | 167 +++++++++++++++++++++++++++
> 7 files changed, 407 insertions(+), 329 deletions(-)
> create mode 100644 drivers/gpu/drm/drm_encoder.c
> create mode 100644 include/drm/drm_encoder.h
>
<snip>
> +
> +/**
> + * drm_encoder_init - Init a preallocated encoder
> + * @dev: drm device
> + * @encoder: the encoder to init
> + * @funcs: callbacks for this encoder
> + * @encoder_type: user visible type of the encoder
> + * @name: printf style format string for the encoder name, or NULL for default name
> + *
> + * Initialises a preallocated encoder. Encoder should be
> + * subclassed as part of driver encoder objects.
> + *
> + * Returns:
> + * Zero on success, error code on failure.
> + */
> +int drm_encoder_init(struct drm_device *dev,
> + struct drm_encoder *encoder,
> + const struct drm_encoder_funcs *funcs,
> + int encoder_type, const char *name, ...)
Alignment with the open parentheses is needed here.
> +{
> + int ret;
> +
> + drm_modeset_lock_all(dev);
> +
> + ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
> + if (ret)
> + goto out_unlock;
> +
> + encoder->dev = dev;
> + encoder->encoder_type = encoder_type;
> + encoder->funcs = funcs;
> + if (name) {
> + va_list ap;
> +
> + va_start(ap, name);
> + encoder->name = kvasprintf(GFP_KERNEL, name, ap);
> + va_end(ap);
> + } else {
> + encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
> + drm_encoder_enum_list[encoder_type].name,
> + encoder->base.id);
> + }
> + if (!encoder->name) {
> + ret = -ENOMEM;
> + goto out_put;
> + }
> +
> + list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
> + encoder->index = dev->mode_config.num_encoder++;
> +
> +out_put:
> + if (ret)
> + drm_mode_object_unregister(dev, &encoder->base);
> +
> +out_unlock:
> + drm_modeset_unlock_all(dev);
> +
> + return ret;
> +}
> +EXPORT_SYMBOL(drm_encoder_init);
> +
> +/**
> + * drm_encoder_cleanup - cleans up an initialised encoder
> + * @encoder: encoder to cleanup
> + *
> + * Cleans up the encoder but doesn't free the object.
> + */
> +void drm_encoder_cleanup(struct drm_encoder *encoder)
> +{
> + struct drm_device *dev = encoder->dev;
> +
> + /* Note that the encoder_list is considered to be static; should we
> + * remove the drm_encoder at runtime we would have to decrement all
> + * the indices on the drm_encoder after us in the encoder_list.
> + */
> +
> + drm_modeset_lock_all(dev);
> + drm_mode_object_unregister(dev, &encoder->base);
> + kfree(encoder->name);
> + list_del(&encoder->head);
> + dev->mode_config.num_encoder--;
> + drm_modeset_unlock_all(dev);
> +
> + memset(encoder, 0, sizeof(*encoder));
> +}
> +EXPORT_SYMBOL(drm_encoder_cleanup);
> +
> +static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
> +{
> + struct drm_connector *connector;
> + struct drm_device *dev = encoder->dev;
> + bool uses_atomic = false;
> +
> + /* For atomic drivers only state objects are synchronously updated and
> + * protected by modeset locks, so check those first. */
> + drm_for_each_connector(connector, dev) {
> + if (!connector->state)
> + continue;
> +
> + uses_atomic = true;
> +
> + if (connector->state->best_encoder != encoder)
> + continue;
> +
> + return connector->state->crtc;
> + }
> +
> + /* Don't return stale data (e.g. pending async disable). */
> + if (uses_atomic)
> + return NULL;
> +
> + return encoder->crtc;
> +}
> +
> +/**
> + * drm_mode_getencoder - get encoder configuration
> + * @dev: drm device for the ioctl
> + * @data: data pointer for the ioctl
> + * @file_priv: drm file for the ioctl call
> + *
> + * Construct a encoder configuration structure to return to the user.
> + *
> + * Called by the user via ioctl.
> + *
> + * Returns:
> + * Zero on success, negative errno on failure.
> + */
> +int drm_mode_getencoder(struct drm_device *dev, void *data,
> + struct drm_file *file_priv)
> +{
> + struct drm_mode_get_encoder *enc_resp = data;
> + struct drm_encoder *encoder;
> + struct drm_crtc *crtc;
> +
> + if (!drm_core_check_feature(dev, DRIVER_MODESET))
> + return -EINVAL;
> +
> + encoder = drm_encoder_find(dev, enc_resp->encoder_id);
> + if (!encoder)
> + return -ENOENT;
> +
> + drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
> + crtc = drm_encoder_get_crtc(encoder);
> + if (crtc)
> + enc_resp->crtc_id = crtc->base.id;
> + else
> + enc_resp->crtc_id = 0;
> + drm_modeset_unlock(&dev->mode_config.connection_mutex);
> +
> + enc_resp->encoder_type = encoder->encoder_type;
> + enc_resp->encoder_id = encoder->base.id;
> + enc_resp->possible_crtcs = encoder->possible_crtcs;
> + enc_resp->possible_clones = encoder->possible_clones;
> +
> + return 0;
> +}
> diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
> index 3fa0275e509f..61d81fb3c8fc 100644
> --- a/include/drm/drm_crtc.h
> +++ b/include/drm/drm_crtc.h
> @@ -40,6 +40,7 @@
> #include <drm/drm_framebuffer.h>
> #include <drm/drm_modes.h>
> #include <drm/drm_connector.h>
> +#include <drm/drm_encoder.h>
>
> struct drm_device;
> struct drm_mode_set;
> @@ -662,97 +663,6 @@ struct drm_crtc {
> };
>
> /**
> - * struct drm_encoder_funcs - encoder controls
> - *
> - * Encoders sit between CRTCs and connectors.
> - */
> -struct drm_encoder_funcs {
> - /**
> - * @reset:
> - *
> - * Reset encoder hardware and software state to off. This function isn't
> - * called by the core directly, only through drm_mode_config_reset().
> - * It's not a helper hook only for historical reasons.
> - */
> - void (*reset)(struct drm_encoder *encoder);
> -
> - /**
> - * @destroy:
> - *
> - * Clean up encoder resources. This is only called at driver unload time
> - * through drm_mode_config_cleanup() since an encoder cannot be
> - * hotplugged in DRM.
> - */
> - void (*destroy)(struct drm_encoder *encoder);
> -
> - /**
> - * @late_register:
> - *
> - * This optional hook can be used to register additional userspace
> - * interfaces attached to the encoder like debugfs interfaces.
> - * It is called late in the driver load sequence from drm_dev_register().
> - * Everything added from this callback should be unregistered in
> - * the early_unregister callback.
> - *
> - * Returns:
> - *
> - * 0 on success, or a negative error code on failure.
> - */
> - int (*late_register)(struct drm_encoder *encoder);
> -
> - /**
> - * @early_unregister:
> - *
> - * This optional hook should be used to unregister the additional
> - * userspace interfaces attached to the encoder from
> - * late_unregister(). It is called from drm_dev_unregister(),
> - * early in the driver unload sequence to disable userspace access
> - * before data structures are torndown.
> - */
> - void (*early_unregister)(struct drm_encoder *encoder);
> -};
> -
> -/**
> - * struct drm_encoder - central DRM encoder structure
> - * @dev: parent DRM device
> - * @head: list management
> - * @base: base KMS object
> - * @name: human readable name, can be overwritten by the driver
> - * @encoder_type: one of the DRM_MODE_ENCODER_<foo> types in drm_mode.h
> - * @possible_crtcs: bitmask of potential CRTC bindings
> - * @possible_clones: bitmask of potential sibling encoders for cloning
> - * @crtc: currently bound CRTC
> - * @bridge: bridge associated to the encoder
> - * @funcs: control functions
> - * @helper_private: mid-layer private data
> - *
> - * CRTCs drive pixels to encoders, which convert them into signals
> - * appropriate for a given connector or set of connectors.
> - */
> -struct drm_encoder {
> - struct drm_device *dev;
> - struct list_head head;
> -
> - struct drm_mode_object base;
> - char *name;
> - int encoder_type;
> -
> - /**
> - * @index: Position inside the mode_config.list, can be used as an array
> - * index. It is invariant over the lifetime of the encoder.
> - */
> - unsigned index;
> -
> - uint32_t possible_crtcs;
> - uint32_t possible_clones;
> -
> - struct drm_crtc *crtc;
> - struct drm_bridge *bridge;
> - const struct drm_encoder_funcs *funcs;
> - const struct drm_encoder_helper_funcs *helper_private;
> -};
> -
> -/**
> * struct drm_plane_state - mutable plane state
> * @plane: backpointer to the plane
> * @crtc: currently bound CRTC, NULL if disabled
> @@ -2091,7 +2001,6 @@ struct drm_mode_config {
> for_each_if ((encoder_mask) & (1 << drm_encoder_index(encoder)))
>
> #define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
> -#define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
> #define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
> #define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
> #define obj_to_property(x) container_of(x, struct drm_property, base)
> @@ -2136,37 +2045,6 @@ static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc)
> return 1 << drm_crtc_index(crtc);
> }
>
> -extern __printf(5, 6)
> -int drm_encoder_init(struct drm_device *dev,
> - struct drm_encoder *encoder,
> - const struct drm_encoder_funcs *funcs,
> - int encoder_type, const char *name, ...);
> -
> -/**
> - * drm_encoder_index - find the index of a registered encoder
> - * @encoder: encoder to find index for
> - *
> - * Given a registered encoder, return the index of that encoder within a DRM
> - * device's list of encoders.
> - */
> -static inline unsigned int drm_encoder_index(struct drm_encoder *encoder)
> -{
> - return encoder->index;
> -}
> -
> -/**
> - * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
> - * @encoder: encoder to test
> - * @crtc: crtc to test
> - *
> - * Return false if @encoder can't be driven by @crtc, true otherwise.
> - */
> -static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
> - struct drm_crtc *crtc)
> -{
> - return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
> -}
> -
> extern __printf(8, 9)
> int drm_universal_plane_init(struct drm_device *dev,
> struct drm_plane *plane,
> @@ -2202,8 +2080,6 @@ extern void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
> extern int drm_crtc_force_disable(struct drm_crtc *crtc);
> extern int drm_crtc_force_disable_all(struct drm_device *dev);
>
> -extern void drm_encoder_cleanup(struct drm_encoder *encoder);
> -
> extern void drm_mode_config_init(struct drm_device *dev);
> extern void drm_mode_config_reset(struct drm_device *dev);
> extern void drm_mode_config_cleanup(struct drm_device *dev);
> @@ -2315,14 +2191,6 @@ static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,
> return mo ? obj_to_crtc(mo) : NULL;
> }
>
> -static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev,
> - uint32_t id)
> -{
> - struct drm_mode_object *mo;
> - mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
> - return mo ? obj_to_encoder(mo) : NULL;
> -}
> -
> static inline struct drm_property *drm_property_find(struct drm_device *dev,
> uint32_t id)
> {
> diff --git a/include/drm/drm_encoder.h b/include/drm/drm_encoder.h
> new file mode 100644
> index 000000000000..2712fd1a686b
> --- /dev/null
> +++ b/include/drm/drm_encoder.h
> @@ -0,0 +1,167 @@
> +/*
> + * Copyright (c) 2016 Intel Corporation
> + *
> + * Permission to use, copy, modify, distribute, and sell this software and its
> + * documentation for any purpose is hereby granted without fee, provided that
> + * the above copyright notice appear in all copies and that both that copyright
> + * notice and this permission notice appear in supporting documentation, and
> + * that the name of the copyright holders not be used in advertising or
> + * publicity pertaining to distribution of the software without specific,
> + * written prior permission. The copyright holders make no representations
> + * about the suitability of this software for any purpose. It is provided "as
> + * is" without express or implied warranty.
> + *
> + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
> + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
> + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
> + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
> + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
> + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
> + * OF THIS SOFTWARE.
> + */
> +
> +#ifndef __DRM_ENCODER_H__
> +#define __DRM_ENCODER_H__
> +
> +#include <linux/list.h>
> +#include <linux/ctype.h>
> +#include <drm/drm_modeset.h>
> +
> +/**
> + * struct drm_encoder_funcs - encoder controls
> + *
> + * Encoders sit between CRTCs and connectors.
> + */
> +struct drm_encoder_funcs {
> + /**
> + * @reset:
> + *
> + * Reset encoder hardware and software state to off. This function isn't
> + * called by the core directly, only through drm_mode_config_reset().
> + * It's not a helper hook only for historical reasons.
> + */
> + void (*reset)(struct drm_encoder *encoder);
> +
> + /**
> + * @destroy:
> + *
> + * Clean up encoder resources. This is only called at driver unload time
> + * through drm_mode_config_cleanup() since an encoder cannot be
> + * hotplugged in DRM.
> + */
> + void (*destroy)(struct drm_encoder *encoder);
> +
> + /**
> + * @late_register:
> + *
> + * This optional hook can be used to register additional userspace
> + * interfaces attached to the encoder like debugfs interfaces.
> + * It is called late in the driver load sequence from drm_dev_register().
> + * Everything added from this callback should be unregistered in
> + * the early_unregister callback.
> + *
> + * Returns:
> + *
> + * 0 on success, or a negative error code on failure.
> + */
> + int (*late_register)(struct drm_encoder *encoder);
> +
> + /**
> + * @early_unregister:
> + *
> + * This optional hook should be used to unregister the additional
> + * userspace interfaces attached to the encoder from
> + * late_unregister(). It is called from drm_dev_unregister(),
> + * early in the driver unload sequence to disable userspace access
> + * before data structures are torndown.
> + */
> + void (*early_unregister)(struct drm_encoder *encoder);
> +};
> +
> +/**
> + * struct drm_encoder - central DRM encoder structure
> + * @dev: parent DRM device
> + * @head: list management
> + * @base: base KMS object
> + * @name: human readable name, can be overwritten by the driver
> + * @encoder_type: one of the DRM_MODE_ENCODER_<foo> types in drm_mode.h
> + * @possible_crtcs: bitmask of potential CRTC bindings
> + * @possible_clones: bitmask of potential sibling encoders for cloning
> + * @crtc: currently bound CRTC
> + * @bridge: bridge associated to the encoder
> + * @funcs: control functions
> + * @helper_private: mid-layer private data
> + *
> + * CRTCs drive pixels to encoders, which convert them into signals
> + * appropriate for a given connector or set of connectors.
> + */
> +struct drm_encoder {
> + struct drm_device *dev;
> + struct list_head head;
> +
> + struct drm_mode_object base;
> + char *name;
> + int encoder_type;
> +
> + /**
> + * @index: Position inside the mode_config.list, can be used as an array
> + * index. It is invariant over the lifetime of the encoder.
> + */
> + unsigned index;
> +
> + uint32_t possible_crtcs;
> + uint32_t possible_clones;
> +
> + struct drm_crtc *crtc;
> + struct drm_bridge *bridge;
> + const struct drm_encoder_funcs *funcs;
> + const struct drm_encoder_helper_funcs *helper_private;
> +};
> +
> +#define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
> +
> +__printf(5, 6)
> +int drm_encoder_init(struct drm_device *dev,
> + struct drm_encoder *encoder,
> + const struct drm_encoder_funcs *funcs,
> + int encoder_type, const char *name, ...);
> +
> +/**
> + * drm_encoder_index - find the index of a registered encoder
> + * @encoder: encoder to find index for
> + *
> + * Given a registered encoder, return the index of that encoder within a DRM
> + * device's list of encoders.
> + */
> +static inline unsigned int drm_encoder_index(struct drm_encoder *encoder)
> +{
> + return encoder->index;
> +}
> +
> +/* FIXME: We have an include file mess still, drm_crtc.h needs untangling. */
> +static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc);
> +
> +/**
> + * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
> + * @encoder: encoder to test
> + * @crtc: crtc to test
> + *
> + * Return false if @encoder can't be driven by @crtc, true otherwise.
> + */
> +static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
> + struct drm_crtc *crtc)
> +{
> + return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
> +}
> +
> +static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev,
> + uint32_t id)
and here.
> +{
> + struct drm_mode_object *mo;
> + mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
checkpatch --strict asks for a blank line above too. Otherwise:
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Thanks,
Archit
> + return mo ? obj_to_encoder(mo) : NULL;
> +}
> +
> +void drm_encoder_cleanup(struct drm_encoder *encoder);
> +
> +#endif
>
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
_______________________________________________
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Intel-gfx@lists.freedesktop.org
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^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [PATCH 2/9] drm/doc: Polish kerneldoc for encoders
2016-08-17 20:55 ` [PATCH 2/9] drm/doc: Polish kerneldoc for encoders Daniel Vetter
@ 2016-08-25 12:24 ` Archit Taneja
0 siblings, 0 replies; 24+ messages in thread
From: Archit Taneja @ 2016-08-25 12:24 UTC (permalink / raw)
To: Daniel Vetter, DRI Development; +Cc: Daniel Vetter, Intel Graphics Development
On 08/18/2016 02:25 AM, Daniel Vetter wrote:
> - Move missing bits into struct drm_encoder docs.
> - Explain that encoders are 95% internal and only 5% uapi, and that in
> general the uapi part is broken.
> - Remove verbose comments for functions not exposed to drivers.
>
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> ---
> Documentation/gpu/drm-kms.rst | 46 ++++--------------------------
> drivers/gpu/drm/drm_encoder.c | 41 +++++++++++++++++----------
> include/drm/drm_encoder.h | 65 ++++++++++++++++++++++++++++++++++++++++---
> 3 files changed, 93 insertions(+), 59 deletions(-)
>
> diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
> index 7f788caebea3..47c2835b7c2d 100644
> --- a/Documentation/gpu/drm-kms.rst
> +++ b/Documentation/gpu/drm-kms.rst
> @@ -128,6 +128,12 @@ Connector Functions Reference
> Encoder Abstraction
> ===================
>
> +.. kernel-doc:: drivers/gpu/drm/drm_encoder.c
> + :doc: overview
> +
> +Encoder Functions Reference
> +---------------------------
> +
> .. kernel-doc:: include/drm/drm_encoder.h
> :internal:
>
> @@ -207,46 +213,6 @@ future); drivers that do not wish to provide special handling for
> primary planes may make use of the helper functions described in ? to
> create and register a primary plane with standard capabilities.
>
> -Encoders (:c:type:`struct drm_encoder <drm_encoder>`)
> ------------------------------------------------------
> -
> -An encoder takes pixel data from a CRTC and converts it to a format
> -suitable for any attached connectors. On some devices, it may be
> -possible to have a CRTC send data to more than one encoder. In that
> -case, both encoders would receive data from the same scanout buffer,
> -resulting in a "cloned" display configuration across the connectors
> -attached to each encoder.
> -
> -Encoder Initialization
> -~~~~~~~~~~~~~~~~~~~~~~
> -
> -As for CRTCs, a KMS driver must create, initialize and register at least
> -one :c:type:`struct drm_encoder <drm_encoder>` instance. The
> -instance is allocated and zeroed by the driver, possibly as part of a
> -larger structure.
> -
> -Drivers must initialize the :c:type:`struct drm_encoder
> -<drm_encoder>` possible_crtcs and possible_clones fields before
> -registering the encoder. Both fields are bitmasks of respectively the
> -CRTCs that the encoder can be connected to, and sibling encoders
> -candidate for cloning.
> -
> -After being initialized, the encoder must be registered with a call to
> -:c:func:`drm_encoder_init()`. The function takes a pointer to the
> -encoder functions and an encoder type. Supported types are
> -
> -- DRM_MODE_ENCODER_DAC for VGA and analog on DVI-I/DVI-A
> -- DRM_MODE_ENCODER_TMDS for DVI, HDMI and (embedded) DisplayPort
> -- DRM_MODE_ENCODER_LVDS for display panels
> -- DRM_MODE_ENCODER_TVDAC for TV output (Composite, S-Video,
> - Component, SCART)
> -- DRM_MODE_ENCODER_VIRTUAL for virtual machine displays
> -
> -Encoders must be attached to a CRTC to be used. DRM drivers leave
> -encoders unattached at initialization time. Applications (or the fbdev
> -compatibility layer when implemented) are responsible for attaching the
> -encoders they want to use to a CRTC.
> -
> Cleanup
> -------
>
> diff --git a/drivers/gpu/drm/drm_encoder.c b/drivers/gpu/drm/drm_encoder.c
> index bce781b7bb5f..977d8cad9321 100644
> --- a/drivers/gpu/drm/drm_encoder.c
> +++ b/drivers/gpu/drm/drm_encoder.c
> @@ -26,6 +26,29 @@
>
> #include "drm_crtc_internal.h"
>
> +/**
> + * DOC: overview
> + *
> + * Encoders represent the connecting element between the CRTC (as the overall
> + * pixel pipeline, represented by struct &drm_crtc) and the connectors (as the
> + * generic sink entity, represented by struct &drm_connector). Encoders are
> + * objects exposed to userspace, originally to allow userspace to infer cloning
> + * and connector/CRTC restrictions. Unfortunately almost all drivers get this
> + * wrong, making the uabi pretty much useless. On top of that the exposed
> + * restrictions are too simple for todays hardware, and the recommend way to
> + * infer restrictions is by using the DRM_MODE_ATOMIC_TEST_ONLY flag for the
> + * atomic IOCTL.
> + *
> + * Otherwise encoders aren't used in the uapi at all (any modeset request from
> + * userspace directly connects a connector with a CRTC), drivers are therefore
> + * free to use them however they wish. Modeset helper libraries make strong use
> + * of encoders to facilitate code sharing. But for more complex settings it is
> + * usually better to move shared code into a separate &drm_bridge, which also
> + * doesn't have any issues with being exposed to userspace.
I guess the last line could say that the drm_bridge isn't exposed to
userspace at all.
> + *
> + * Encoders are initialized with drm_encoder_init() and cleaned up using
> + * drm_encoder_cleanup().
> + */
> static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
> { DRM_MODE_ENCODER_NONE, "None" },
> { DRM_MODE_ENCODER_DAC, "DAC" },
> @@ -71,8 +94,9 @@ void drm_encoder_unregister_all(struct drm_device *dev)
> * @encoder_type: user visible type of the encoder
> * @name: printf style format string for the encoder name, or NULL for default name
> *
> - * Initialises a preallocated encoder. Encoder should be
> - * subclassed as part of driver encoder objects.
> + * Initialises a preallocated encoder. Encoder should be subclassed as part of
> + * driver encoder objects. At driver unload time drm_encoder_cleanup() should be
> + * called from the driver's destroy hook in &drm_encoder_funcs.
> *
> * Returns:
> * Zero on success, error code on failure.
> @@ -176,19 +200,6 @@ static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
> return encoder->crtc;
> }
>
> -/**
> - * drm_mode_getencoder - get encoder configuration
> - * @dev: drm device for the ioctl
> - * @data: data pointer for the ioctl
> - * @file_priv: drm file for the ioctl call
> - *
> - * Construct a encoder configuration structure to return to the user.
> - *
> - * Called by the user via ioctl.
> - *
> - * Returns:
> - * Zero on success, negative errno on failure.
> - */
> int drm_mode_getencoder(struct drm_device *dev, void *data,
> struct drm_file *file_priv)
> {
> diff --git a/include/drm/drm_encoder.h b/include/drm/drm_encoder.h
> index 2712fd1a686b..b049748b2514 100644
> --- a/include/drm/drm_encoder.h
> +++ b/include/drm/drm_encoder.h
> @@ -84,9 +84,6 @@ struct drm_encoder_funcs {
> * @head: list management
> * @base: base KMS object
> * @name: human readable name, can be overwritten by the driver
> - * @encoder_type: one of the DRM_MODE_ENCODER_<foo> types in drm_mode.h
> - * @possible_crtcs: bitmask of potential CRTC bindings
> - * @possible_clones: bitmask of potential sibling encoders for cloning
> * @crtc: currently bound CRTC
> * @bridge: bridge associated to the encoder
> * @funcs: control functions
> @@ -101,6 +98,31 @@ struct drm_encoder {
>
> struct drm_mode_object base;
> char *name;
> + /**
> + * @encoder_type:
> + *
> + * One of the DRM_MODE_ENCODER_<foo> types in drm_mode.h. The following
> + * encoder types are defined thus far:
> + *
> + * - DRM_MODE_ENCODER_DAC for VGA and analog on DVI-I/DVI-A.
> + *
> + * - DRM_MODE_ENCODER_TMDS for DVI, HDMI and (embedded) DisplayPort.
> + *
> + * - DRM_MODE_ENCODER_LVDS for display panels, or in general any panel
> + * with a proprietary parallel connector.
> + *
> + * - DRM_MODE_ENCODER_TVDAC for TV output (Composite, S-Video,
> + * Component, SCART).
> + *
> + * - DRM_MODE_ENCODER_VIRTUAL for virtual machine displays
> + *
> + * - DRM_MODE_ENCODER_DSI for panels connected using the DSI serial bus.
> + *
> + * - DRM_MODE_ENCODER_DPI for panels connected using the DPI parallel bus.
The line above exceeds 80 chars, should be easy to remove this warning.
> + *
> + * - DRM_MODE_ENCODER_DPMST for special fake encoders used to allow
> + * mutliple DP MST streams to share one physical encoder.
> + */
> int encoder_type;
>
> /**
> @@ -109,7 +131,34 @@ struct drm_encoder {
> */
> unsigned index;
>
> + /**
> + * @possible_crtcs: Bitmask of potential CRTC bindings, using
> + * drm_crtc_index() as the index into the bitfield. The driver must set
> + * the bits for all &drm_crtc objects this encoder can be connected to
> + * before calling drm_encoder_init().
> + *
> + * In reality almost every driver gets this wrong.
> + *
> + * Note that since CRTC objects can't be hotplugged the assigned indices
> + * are stable and hence known before registering all objects.
> + */
Same here.
Archit
--
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^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [PATCH 4/9] drm: Remove drm_mode_object->atomic_count
2016-08-17 20:56 ` [PATCH 4/9] drm: Remove drm_mode_object->atomic_count Daniel Vetter
@ 2016-08-25 12:25 ` Archit Taneja
0 siblings, 0 replies; 24+ messages in thread
From: Archit Taneja @ 2016-08-25 12:25 UTC (permalink / raw)
To: Daniel Vetter, DRI Development; +Cc: Intel Graphics Development
On 08/18/2016 02:26 AM, Daniel Vetter wrote:
> It's only used in drm_mode_object_get_properties, and we can compute
> it there directly with a bit of code shuffling.
>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> ---
> drivers/gpu/drm/drm_mode_object.c | 31 ++++++++++++-------------------
> include/drm/drm_mode_object.h | 2 +-
> 2 files changed, 13 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_mode_object.c b/drivers/gpu/drm/drm_mode_object.c
> index cef9104e8285..a92aeed51156 100644
> --- a/drivers/gpu/drm/drm_mode_object.c
> +++ b/drivers/gpu/drm/drm_mode_object.c
> @@ -209,8 +209,6 @@ void drm_object_attach_property(struct drm_mode_object *obj,
> obj->properties->properties[count] = property;
> obj->properties->values[count] = init_val;
> obj->properties->count++;
> - if (property->flags & DRM_MODE_PROP_ATOMIC)
> - obj->properties->atomic_count++;
> }
> EXPORT_SYMBOL(drm_object_attach_property);
>
> @@ -288,35 +286,30 @@ int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
> uint64_t __user *prop_values,
> uint32_t *arg_count_props)
> {
> - int props_count;
> - int i, ret, copied;
> + int i, ret, count;
>
> - props_count = obj->properties->count;
> - if (!atomic)
> - props_count -= obj->properties->atomic_count;
> + for (i = 0, count = 0; i < obj->properties->count; i++) {
> + struct drm_property *prop = obj->properties->properties[i];
> + uint64_t val;
>
> - if ((*arg_count_props >= props_count) && props_count) {
> - for (i = 0, copied = 0; copied < props_count; i++) {
> - struct drm_property *prop = obj->properties->properties[i];
> - uint64_t val;
> -
> - if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
> - continue;
> + if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
> + continue;
>
> + if (*arg_count_props > count) {
> ret = drm_object_property_get_value(obj, prop, &val);
> if (ret)
> return ret;
>
> - if (put_user(prop->base.id, prop_ptr + copied))
> + if (put_user(prop->base.id, prop_ptr + count))
> return -EFAULT;
>
> - if (put_user(val, prop_values + copied))
> + if (put_user(val, prop_values + count))
> return -EFAULT;
> -
> - copied++;
> }
> +
> + count++;
> }
> - *arg_count_props = props_count;
> + *arg_count_props = count;
>
> return 0;
> }
> diff --git a/include/drm/drm_mode_object.h b/include/drm/drm_mode_object.h
> index c0e4414299f7..b8adb6425f2a 100644
> --- a/include/drm/drm_mode_object.h
> +++ b/include/drm/drm_mode_object.h
> @@ -37,7 +37,7 @@ struct drm_mode_object {
>
> #define DRM_OBJECT_MAX_PROPERTY 24
> struct drm_object_properties {
> - int count, atomic_count;
> + int count;
> /* NOTE: if we ever start dynamically destroying properties (ie.
> * not at drm_mode_config_cleanup() time), then we'd have to do
> * a better job of detaching property from mode objects to avoid
>
--
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^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [PATCH 3/9] drm: Extract drm_mode_object.[hc]
2016-08-17 20:56 ` [PATCH 3/9] drm: Extract drm_mode_object.[hc] Daniel Vetter
@ 2016-08-25 12:25 ` Archit Taneja
2016-08-25 19:40 ` Daniel Vetter
0 siblings, 1 reply; 24+ messages in thread
From: Archit Taneja @ 2016-08-25 12:25 UTC (permalink / raw)
To: Daniel Vetter, DRI Development; +Cc: Daniel Vetter, Intel Graphics Development
On 08/18/2016 02:26 AM, Daniel Vetter wrote:
> Just for the struct drm_mode_object base class. The header file was
> already partially extracted to help untangle the include loops.
>
> v2:
> - Also move the generic get/set property ioctls. At first this seemed
> like a bad idea since it requires making drm_mode_crtc_set_obj_prop
> non-static. But eventually that will get split away too (like
> the connector version already is) for both crtc and planes. Hence I
> reconsidered.
>
> - drm_mode_object.[hc] instead of drm_modeset.[hc], which requires
> renaming the drm_modeset.h header I already started building up.
> This is more consistent (matches the name of the main structure),
> and I want to be able to use drm_modeset.[hc] for the basic modeset
> init/cleanup functionality like drm_mode_config_init.
>
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> ---
> Documentation/gpu/drm-kms.rst | 9 +
> drivers/gpu/drm/Makefile | 2 +-
> drivers/gpu/drm/drm_crtc.c | 413 +---------------------------------
> drivers/gpu/drm/drm_crtc_internal.h | 52 +++--
> drivers/gpu/drm/drm_mode_object.c | 435 ++++++++++++++++++++++++++++++++++++
> include/drm/drm_connector.h | 2 +-
> include/drm/drm_crtc.h | 12 +-
> include/drm/drm_encoder.h | 2 +-
> include/drm/drm_framebuffer.h | 2 +-
> include/drm/drm_mode_object.h | 80 +++++++
> include/drm/drm_modes.h | 2 +-
> include/drm/drm_modeset.h | 70 ------
> 12 files changed, 562 insertions(+), 519 deletions(-)
> create mode 100644 drivers/gpu/drm/drm_mode_object.c
> create mode 100644 include/drm/drm_mode_object.h
> delete mode 100644 include/drm/drm_modeset.h
>
> diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
> index 47c2835b7c2d..b164472f2157 100644
> --- a/Documentation/gpu/drm-kms.rst
> +++ b/Documentation/gpu/drm-kms.rst
> @@ -15,6 +15,15 @@ be setup by initializing the following fields.
> - struct drm_mode_config_funcs \*funcs;
> Mode setting functions.
>
> +Modeset Base Object Abstraction
> +===============================
> +
> +.. kernel-doc:: include/drm/drm_mode_object.h
> + :internal:
> +
> +.. kernel-doc:: drivers/gpu/drm/drm_mode_object.c
> + :export:
> +
> KMS Data Structures
> ===================
>
> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
> index efdb4176230f..59979f3f3648 100644
> --- a/drivers/gpu/drm/Makefile
> +++ b/drivers/gpu/drm/Makefile
> @@ -14,7 +14,7 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \
> drm_rect.o drm_vma_manager.o drm_flip_work.o \
> drm_modeset_lock.o drm_atomic.o drm_bridge.o \
> drm_framebuffer.o drm_connector.o drm_blend.o \
> - drm_encoder.o
> + drm_encoder.o drm_mode_object.o
>
> drm-$(CONFIG_COMPAT) += drm_ioc32.o
> drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o
> diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
> index f89711b16d3e..d7f68ec049d1 100644
> --- a/drivers/gpu/drm/drm_crtc.c
> +++ b/drivers/gpu/drm/drm_crtc.c
> @@ -57,162 +57,6 @@ static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
> /*
> * Optional properties
> */
> -/*
> - * Internal function to assign a slot in the object idr and optionally
> - * register the object into the idr.
> - */
> -int drm_mode_object_get_reg(struct drm_device *dev,
> - struct drm_mode_object *obj,
> - uint32_t obj_type,
> - bool register_obj,
> - void (*obj_free_cb)(struct kref *kref))
> -{
> - int ret;
> -
> - mutex_lock(&dev->mode_config.idr_mutex);
> - ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
> - if (ret >= 0) {
> - /*
> - * Set up the object linking under the protection of the idr
> - * lock so that other users can't see inconsistent state.
> - */
> - obj->id = ret;
> - obj->type = obj_type;
> - if (obj_free_cb) {
> - obj->free_cb = obj_free_cb;
> - kref_init(&obj->refcount);
> - }
> - }
> - mutex_unlock(&dev->mode_config.idr_mutex);
> -
> - return ret < 0 ? ret : 0;
> -}
> -
> -/**
> - * drm_mode_object_get - allocate a new modeset identifier
> - * @dev: DRM device
> - * @obj: object pointer, used to generate unique ID
> - * @obj_type: object type
> - *
> - * Create a unique identifier based on @ptr in @dev's identifier space. Used
> - * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
> - * modeset identifiers are _not_ reference counted. Hence don't use this for
> - * reference counted modeset objects like framebuffers.
> - *
> - * Returns:
> - * Zero on success, error code on failure.
> - */
> -int drm_mode_object_get(struct drm_device *dev,
> - struct drm_mode_object *obj, uint32_t obj_type)
> -{
> - return drm_mode_object_get_reg(dev, obj, obj_type, true, NULL);
> -}
> -
> -void drm_mode_object_register(struct drm_device *dev,
> - struct drm_mode_object *obj)
> -{
> - mutex_lock(&dev->mode_config.idr_mutex);
> - idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
> - mutex_unlock(&dev->mode_config.idr_mutex);
> -}
> -
> -/**
> - * drm_mode_object_unregister - free a modeset identifer
> - * @dev: DRM device
> - * @object: object to free
> - *
> - * Free @id from @dev's unique identifier pool.
> - * This function can be called multiple times, and guards against
> - * multiple removals.
> - * These modeset identifiers are _not_ reference counted. Hence don't use this
> - * for reference counted modeset objects like framebuffers.
> - */
> -void drm_mode_object_unregister(struct drm_device *dev,
> - struct drm_mode_object *object)
> -{
> - mutex_lock(&dev->mode_config.idr_mutex);
> - if (object->id) {
> - idr_remove(&dev->mode_config.crtc_idr, object->id);
> - object->id = 0;
> - }
> - mutex_unlock(&dev->mode_config.idr_mutex);
> -}
> -
> -struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
> - uint32_t id, uint32_t type)
> -{
> - struct drm_mode_object *obj = NULL;
> -
> - mutex_lock(&dev->mode_config.idr_mutex);
> - obj = idr_find(&dev->mode_config.crtc_idr, id);
> - if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
> - obj = NULL;
> - if (obj && obj->id != id)
> - obj = NULL;
> -
> - if (obj && obj->free_cb) {
> - if (!kref_get_unless_zero(&obj->refcount))
> - obj = NULL;
> - }
> - mutex_unlock(&dev->mode_config.idr_mutex);
> -
> - return obj;
> -}
> -
> -/**
> - * drm_mode_object_find - look up a drm object with static lifetime
> - * @dev: drm device
> - * @id: id of the mode object
> - * @type: type of the mode object
> - *
> - * This function is used to look up a modeset object. It will acquire a
> - * reference for reference counted objects. This reference must be dropped again
> - * by callind drm_mode_object_unreference().
> - */
> -struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
> - uint32_t id, uint32_t type)
> -{
> - struct drm_mode_object *obj = NULL;
> -
> - obj = __drm_mode_object_find(dev, id, type);
> - return obj;
> -}
> -EXPORT_SYMBOL(drm_mode_object_find);
> -
> -/**
> - * drm_mode_object_unreference - decr the object refcnt
> - * @obj: mode_object
> - *
> - * This functions decrements the object's refcount if it is a refcounted modeset
> - * object. It is a no-op on any other object. This is used to drop references
> - * acquired with drm_mode_object_reference().
> - */
> -void drm_mode_object_unreference(struct drm_mode_object *obj)
> -{
> - if (obj->free_cb) {
> - DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
> - kref_put(&obj->refcount, obj->free_cb);
> - }
> -}
> -EXPORT_SYMBOL(drm_mode_object_unreference);
> -
> -/**
> - * drm_mode_object_reference - incr the object refcnt
> - * @obj: mode_object
> - *
> - * This functions increments the object's refcount if it is a refcounted modeset
> - * object. It is a no-op on any other object. References should be dropped again
> - * by calling drm_mode_object_unreference().
> - */
> -void drm_mode_object_reference(struct drm_mode_object *obj)
> -{
> - if (obj->free_cb) {
> - DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
> - kref_get(&obj->refcount);
> - }
> -}
> -EXPORT_SYMBOL(drm_mode_object_reference);
> -
> /**
> * drm_crtc_force_disable - Forcibly turn off a CRTC
> * @crtc: CRTC to turn off
> @@ -1005,45 +849,6 @@ int drm_mode_getcrtc(struct drm_device *dev,
> return 0;
> }
>
> -/* helper for getconnector and getproperties ioctls */
> -int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
> - uint32_t __user *prop_ptr,
> - uint64_t __user *prop_values,
> - uint32_t *arg_count_props)
> -{
> - int props_count;
> - int i, ret, copied;
> -
> - props_count = obj->properties->count;
> - if (!atomic)
> - props_count -= obj->properties->atomic_count;
> -
> - if ((*arg_count_props >= props_count) && props_count) {
> - for (i = 0, copied = 0; copied < props_count; i++) {
> - struct drm_property *prop = obj->properties->properties[i];
> - uint64_t val;
> -
> - if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
> - continue;
> -
> - ret = drm_object_property_get_value(obj, prop, &val);
> - if (ret)
> - return ret;
> -
> - if (put_user(prop->base.id, prop_ptr + copied))
> - return -EFAULT;
> -
> - if (put_user(val, prop_values + copied))
> - return -EFAULT;
> -
> - copied++;
> - }
> - }
> - *arg_count_props = props_count;
> -
> - return 0;
> -}
> -
> /**
> * drm_mode_getplane_res - enumerate all plane resources
> * @dev: DRM device
> @@ -2286,105 +2091,6 @@ void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
> EXPORT_SYMBOL(drm_property_destroy);
>
> /**
> - * drm_object_attach_property - attach a property to a modeset object
> - * @obj: drm modeset object
> - * @property: property to attach
> - * @init_val: initial value of the property
> - *
> - * This attaches the given property to the modeset object with the given initial
> - * value. Currently this function cannot fail since the properties are stored in
> - * a statically sized array.
> - */
> -void drm_object_attach_property(struct drm_mode_object *obj,
> - struct drm_property *property,
> - uint64_t init_val)
> -{
> - int count = obj->properties->count;
> -
> - if (count == DRM_OBJECT_MAX_PROPERTY) {
> - WARN(1, "Failed to attach object property (type: 0x%x). Please "
> - "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
> - "you see this message on the same object type.\n",
> - obj->type);
> - return;
> - }
> -
> - obj->properties->properties[count] = property;
> - obj->properties->values[count] = init_val;
> - obj->properties->count++;
> - if (property->flags & DRM_MODE_PROP_ATOMIC)
> - obj->properties->atomic_count++;
> -}
> -EXPORT_SYMBOL(drm_object_attach_property);
> -
> -/**
> - * drm_object_property_set_value - set the value of a property
> - * @obj: drm mode object to set property value for
> - * @property: property to set
> - * @val: value the property should be set to
> - *
> - * This functions sets a given property on a given object. This function only
> - * changes the software state of the property, it does not call into the
> - * driver's ->set_property callback.
> - *
> - * Returns:
> - * Zero on success, error code on failure.
> - */
> -int drm_object_property_set_value(struct drm_mode_object *obj,
> - struct drm_property *property, uint64_t val)
> -{
> - int i;
> -
> - for (i = 0; i < obj->properties->count; i++) {
> - if (obj->properties->properties[i] == property) {
> - obj->properties->values[i] = val;
> - return 0;
> - }
> - }
> -
> - return -EINVAL;
> -}
> -EXPORT_SYMBOL(drm_object_property_set_value);
> -
> -/**
> - * drm_object_property_get_value - retrieve the value of a property
> - * @obj: drm mode object to get property value from
> - * @property: property to retrieve
> - * @val: storage for the property value
> - *
> - * This function retrieves the softare state of the given property for the given
> - * property. Since there is no driver callback to retrieve the current property
> - * value this might be out of sync with the hardware, depending upon the driver
> - * and property.
> - *
> - * Returns:
> - * Zero on success, error code on failure.
> - */
> -int drm_object_property_get_value(struct drm_mode_object *obj,
> - struct drm_property *property, uint64_t *val)
> -{
> - int i;
> -
> - /* read-only properties bypass atomic mechanism and still store
> - * their value in obj->properties->values[].. mostly to avoid
> - * having to deal w/ EDID and similar props in atomic paths:
> - */
> - if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
> - !(property->flags & DRM_MODE_PROP_IMMUTABLE))
> - return drm_atomic_get_property(obj, property, val);
> -
> - for (i = 0; i < obj->properties->count; i++) {
> - if (obj->properties->properties[i] == property) {
> - *val = obj->properties->values[i];
> - return 0;
> - }
> - }
> -
> - return -EINVAL;
> -}
> -EXPORT_SYMBOL(drm_object_property_get_value);
> -
> -/**
> * drm_mode_getproperty_ioctl - get the property metadata
> * @dev: DRM device
> * @data: ioctl data
> @@ -2929,9 +2635,9 @@ void drm_property_change_valid_put(struct drm_property *property,
> drm_property_unreference_blob(obj_to_blob(ref));
> }
>
> -static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
> - struct drm_property *property,
> - uint64_t value)
> +int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
> + struct drm_property *property,
> + uint64_t value)
> {
> int ret = -EINVAL;
> struct drm_crtc *crtc = obj_to_crtc(obj);
> @@ -2974,119 +2680,6 @@ int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
> EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
>
> /**
> - * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
> - * @dev: DRM device
> - * @data: ioctl data
> - * @file_priv: DRM file info
> - *
> - * This function retrieves the current value for an object's property. Compared
> - * to the connector specific ioctl this one is extended to also work on crtc and
> - * plane objects.
> - *
> - * Called by the user via ioctl.
> - *
> - * Returns:
> - * Zero on success, negative errno on failure.
> - */
> -int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
> - struct drm_file *file_priv)
> -{
> - struct drm_mode_obj_get_properties *arg = data;
> - struct drm_mode_object *obj;
> - int ret = 0;
> -
> - if (!drm_core_check_feature(dev, DRIVER_MODESET))
> - return -EINVAL;
> -
> - drm_modeset_lock_all(dev);
> -
> - obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
> - if (!obj) {
> - ret = -ENOENT;
> - goto out;
> - }
> - if (!obj->properties) {
> - ret = -EINVAL;
> - goto out_unref;
> - }
> -
> - ret = drm_mode_object_get_properties(obj, file_priv->atomic,
> - (uint32_t __user *)(unsigned long)(arg->props_ptr),
> - (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
> - &arg->count_props);
> -
> -out_unref:
> - drm_mode_object_unreference(obj);
> -out:
> - drm_modeset_unlock_all(dev);
> - return ret;
> -}
> -
> -int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
> - struct drm_file *file_priv)
> -{
> - struct drm_mode_obj_set_property *arg = data;
> - struct drm_mode_object *arg_obj;
> - struct drm_mode_object *prop_obj;
> - struct drm_property *property;
> - int i, ret = -EINVAL;
> - struct drm_mode_object *ref;
> -
> - if (!drm_core_check_feature(dev, DRIVER_MODESET))
> - return -EINVAL;
> -
> - drm_modeset_lock_all(dev);
> -
> - arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
> - if (!arg_obj) {
> - ret = -ENOENT;
> - goto out;
> - }
> - if (!arg_obj->properties)
> - goto out_unref;
> -
> - for (i = 0; i < arg_obj->properties->count; i++)
> - if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
> - break;
> -
> - if (i == arg_obj->properties->count)
> - goto out_unref;
> -
> - prop_obj = drm_mode_object_find(dev, arg->prop_id,
> - DRM_MODE_OBJECT_PROPERTY);
> - if (!prop_obj) {
> - ret = -ENOENT;
> - goto out_unref;
> - }
> - property = obj_to_property(prop_obj);
> -
> - if (!drm_property_change_valid_get(property, arg->value, &ref))
> - goto out_unref;
> -
> - switch (arg_obj->type) {
> - case DRM_MODE_OBJECT_CONNECTOR:
> - ret = drm_mode_connector_set_obj_prop(arg_obj, property,
> - arg->value);
> - break;
> - case DRM_MODE_OBJECT_CRTC:
> - ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
> - break;
> - case DRM_MODE_OBJECT_PLANE:
> - ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
> - property, arg->value);
> - break;
> - }
> -
> - drm_property_change_valid_put(property, ref);
> -
> -out_unref:
> - drm_mode_object_unreference(arg_obj);
> -out:
> - drm_modeset_unlock_all(dev);
> - return ret;
> -}
> -
> -/**
> * drm_mode_crtc_set_gamma_size - set the gamma table size
> * @crtc: CRTC to set the gamma table size for
> * @gamma_size: size of the gamma table
> diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
> index 69f2b21ddad3..26ea7b5e3684 100644
> --- a/drivers/gpu/drm/drm_crtc_internal.h
> +++ b/drivers/gpu/drm/drm_crtc_internal.h
> @@ -33,29 +33,14 @@
>
>
> /* drm_crtc.c */
> -int drm_mode_object_get_reg(struct drm_device *dev,
> - struct drm_mode_object *obj,
> - uint32_t obj_type,
> - bool register_obj,
> - void (*obj_free_cb)(struct kref *kref));
> -void drm_mode_object_register(struct drm_device *dev,
> - struct drm_mode_object *obj);
> -int drm_mode_object_get(struct drm_device *dev,
> - struct drm_mode_object *obj, uint32_t obj_type);
> -struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
> - uint32_t id, uint32_t type);
> -void drm_mode_object_unregister(struct drm_device *dev,
> - struct drm_mode_object *object);
> -int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
> - uint32_t __user *prop_ptr,
> - uint64_t __user *prop_values,
> - uint32_t *arg_count_props);
> +int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
> + struct drm_property *property,
> + uint64_t value);
> bool drm_property_change_valid_get(struct drm_property *property,
> uint64_t value,
> struct drm_mode_object **ref);
> void drm_property_change_valid_put(struct drm_property *property,
> struct drm_mode_object *ref);
> -
> int drm_plane_check_pixel_format(const struct drm_plane *plane,
> u32 format);
> int drm_crtc_check_viewport(const struct drm_crtc *crtc,
> @@ -76,11 +61,6 @@ int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
> void *data, struct drm_file *file_priv);
>
> /* IOCTLs */
> -int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
> - struct drm_file *file_priv);
> -int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
> - struct drm_file *file_priv);
> -
> int drm_mode_getresources(struct drm_device *dev,
> void *data, struct drm_file *file_priv);
> int drm_mode_getplane_res(struct drm_device *dev, void *data,
> @@ -113,6 +93,32 @@ int drm_mode_gamma_set_ioctl(struct drm_device *dev,
> int drm_mode_page_flip_ioctl(struct drm_device *dev,
> void *data, struct drm_file *file_priv);
>
> +/* drm_mode_object.c */
> +int drm_mode_object_get_reg(struct drm_device *dev,
> + struct drm_mode_object *obj,
> + uint32_t obj_type,
> + bool register_obj,
> + void (*obj_free_cb)(struct kref *kref));
> +void drm_mode_object_register(struct drm_device *dev,
> + struct drm_mode_object *obj);
> +int drm_mode_object_get(struct drm_device *dev,
> + struct drm_mode_object *obj, uint32_t obj_type);
> +struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
> + uint32_t id, uint32_t type);
> +void drm_mode_object_unregister(struct drm_device *dev,
> + struct drm_mode_object *object);
Alignment issue in the declaration here.
> +int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
> + uint32_t __user *prop_ptr,
> + uint64_t __user *prop_values,
> + uint32_t *arg_count_props);
> +
> +/* IOCTL */
> +
> +int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
> + struct drm_file *file_priv);
> +int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
> + struct drm_file *file_priv);
> +
> /* drm_encoder.c */
> int drm_encoder_register_all(struct drm_device *dev);
> void drm_encoder_unregister_all(struct drm_device *dev);
> diff --git a/drivers/gpu/drm/drm_mode_object.c b/drivers/gpu/drm/drm_mode_object.c
> new file mode 100644
> index 000000000000..cef9104e8285
> --- /dev/null
> +++ b/drivers/gpu/drm/drm_mode_object.c
> @@ -0,0 +1,435 @@
> +/*
> + * Copyright (c) 2016 Intel Corporation
> + *
> + * Permission to use, copy, modify, distribute, and sell this software and its
> + * documentation for any purpose is hereby granted without fee, provided that
> + * the above copyright notice appear in all copies and that both that copyright
> + * notice and this permission notice appear in supporting documentation, and
> + * that the name of the copyright holders not be used in advertising or
> + * publicity pertaining to distribution of the software without specific,
> + * written prior permission. The copyright holders make no representations
> + * about the suitability of this software for any purpose. It is provided "as
> + * is" without express or implied warranty.
> + *
> + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
> + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
> + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
> + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
> + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
> + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
> + * OF THIS SOFTWARE.
> + */
> +
> +#include <linux/export.h>
> +#include <drm/drmP.h>
> +#include <drm/drm_mode_object.h>
> +
> +#include "drm_crtc_internal.h"
> +
> +/*
> + * Internal function to assign a slot in the object idr and optionally
> + * register the object into the idr.
> + */
> +int drm_mode_object_get_reg(struct drm_device *dev,
> + struct drm_mode_object *obj,
> + uint32_t obj_type,
> + bool register_obj,
> + void (*obj_free_cb)(struct kref *kref))
> +{
> + int ret;
> +
> + mutex_lock(&dev->mode_config.idr_mutex);
> + ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
> + if (ret >= 0) {
> + /*
> + * Set up the object linking under the protection of the idr
> + * lock so that other users can't see inconsistent state.
> + */
> + obj->id = ret;
> + obj->type = obj_type;
> + if (obj_free_cb) {
> + obj->free_cb = obj_free_cb;
> + kref_init(&obj->refcount);
> + }
> + }
> + mutex_unlock(&dev->mode_config.idr_mutex);
> +
> + return ret < 0 ? ret : 0;
> +}
> +
> +/**
> + * drm_mode_object_get - allocate a new modeset identifier
> + * @dev: DRM device
> + * @obj: object pointer, used to generate unique ID
> + * @obj_type: object type
> + *
> + * Create a unique identifier based on @ptr in @dev's identifier space. Used
> + * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
> + * modeset identifiers are _not_ reference counted. Hence don't use this for
> + * reference counted modeset objects like framebuffers.
> + *
> + * Returns:
> + * Zero on success, error code on failure.
> + */
> +int drm_mode_object_get(struct drm_device *dev,
> + struct drm_mode_object *obj, uint32_t obj_type)
> +{
> + return drm_mode_object_get_reg(dev, obj, obj_type, true, NULL);
> +}
> +
> +void drm_mode_object_register(struct drm_device *dev,
> + struct drm_mode_object *obj)
> +{
> + mutex_lock(&dev->mode_config.idr_mutex);
> + idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
> + mutex_unlock(&dev->mode_config.idr_mutex);
> +}
> +
> +/**
> + * drm_mode_object_unregister - free a modeset identifer
> + * @dev: DRM device
> + * @object: object to free
> + *
> + * Free @id from @dev's unique identifier pool.
> + * This function can be called multiple times, and guards against
> + * multiple removals.
> + * These modeset identifiers are _not_ reference counted. Hence don't use this
> + * for reference counted modeset objects like framebuffers.
> + */
> +void drm_mode_object_unregister(struct drm_device *dev,
> + struct drm_mode_object *object)
> +{
> + mutex_lock(&dev->mode_config.idr_mutex);
> + if (object->id) {
> + idr_remove(&dev->mode_config.crtc_idr, object->id);
> + object->id = 0;
> + }
> + mutex_unlock(&dev->mode_config.idr_mutex);
> +}
> +
> +struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
> + uint32_t id, uint32_t type)
> +{
> + struct drm_mode_object *obj = NULL;
> +
> + mutex_lock(&dev->mode_config.idr_mutex);
> + obj = idr_find(&dev->mode_config.crtc_idr, id);
> + if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
> + obj = NULL;
> + if (obj && obj->id != id)
> + obj = NULL;
> +
> + if (obj && obj->free_cb) {
> + if (!kref_get_unless_zero(&obj->refcount))
> + obj = NULL;
> + }
> + mutex_unlock(&dev->mode_config.idr_mutex);
> +
> + return obj;
> +}
> +
> +/**
> + * drm_mode_object_find - look up a drm object with static lifetime
> + * @dev: drm device
> + * @id: id of the mode object
> + * @type: type of the mode object
> + *
> + * This function is used to look up a modeset object. It will acquire a
> + * reference for reference counted objects. This reference must be dropped again
> + * by callind drm_mode_object_unreference().
> + */
> +struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
> + uint32_t id, uint32_t type)
> +{
> + struct drm_mode_object *obj = NULL;
> +
> + obj = __drm_mode_object_find(dev, id, type);
> + return obj;
> +}
> +EXPORT_SYMBOL(drm_mode_object_find);
> +
> +/**
> + * drm_mode_object_unreference - decr the object refcnt
> + * @obj: mode_object
> + *
> + * This functions decrements the object's refcount if it is a refcounted modeset
s/functions/function
> + * object. It is a no-op on any other object. This is used to drop references
> + * acquired with drm_mode_object_reference().
> + */
> +void drm_mode_object_unreference(struct drm_mode_object *obj)
> +{
> + if (obj->free_cb) {
> + DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
> + kref_put(&obj->refcount, obj->free_cb);
> + }
> +}
> +EXPORT_SYMBOL(drm_mode_object_unreference);
> +
> +/**
> + * drm_mode_object_reference - incr the object refcnt
> + * @obj: mode_object
> + *
> + * This functions increments the object's refcount if it is a refcounted modeset
s/functions/function
> + * object. It is a no-op on any other object. References should be dropped again
> + * by calling drm_mode_object_unreference().
> + */
> +void drm_mode_object_reference(struct drm_mode_object *obj)
> +{
> + if (obj->free_cb) {
> + DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
> + kref_get(&obj->refcount);
> + }
> +}
> +EXPORT_SYMBOL(drm_mode_object_reference);
> +
> +/**
> + * drm_object_attach_property - attach a property to a modeset object
> + * @obj: drm modeset object
> + * @property: property to attach
> + * @init_val: initial value of the property
> + *
> + * This attaches the given property to the modeset object with the given initial
> + * value. Currently this function cannot fail since the properties are stored in
> + * a statically sized array.
> + */
> +void drm_object_attach_property(struct drm_mode_object *obj,
> + struct drm_property *property,
> + uint64_t init_val)
> +{
> + int count = obj->properties->count;
> +
> + if (count == DRM_OBJECT_MAX_PROPERTY) {
> + WARN(1, "Failed to attach object property (type: 0x%x). Please "
> + "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
> + "you see this message on the same object type.\n",
> + obj->type);
> + return;
> + }
> +
> + obj->properties->properties[count] = property;
> + obj->properties->values[count] = init_val;
> + obj->properties->count++;
> + if (property->flags & DRM_MODE_PROP_ATOMIC)
> + obj->properties->atomic_count++;
> +}
> +EXPORT_SYMBOL(drm_object_attach_property);
> +
> +/**
> + * drm_object_property_set_value - set the value of a property
> + * @obj: drm mode object to set property value for
> + * @property: property to set
> + * @val: value the property should be set to
> + *
> + * This functions sets a given property on a given object. This function only
s/functions/function
Otherwise:
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Archit
> + * changes the software state of the property, it does not call into the
> + * driver's ->set_property callback.
> + *
> + * Returns:
> + * Zero on success, error code on failure.
> + */
> +int drm_object_property_set_value(struct drm_mode_object *obj,
> + struct drm_property *property, uint64_t val)
> +{
> + int i;
> +
> + for (i = 0; i < obj->properties->count; i++) {
> + if (obj->properties->properties[i] == property) {
> + obj->properties->values[i] = val;
> + return 0;
> + }
> + }
> +
> + return -EINVAL;
> +}
> +EXPORT_SYMBOL(drm_object_property_set_value);
> +
> +/**
> + * drm_object_property_get_value - retrieve the value of a property
> + * @obj: drm mode object to get property value from
> + * @property: property to retrieve
> + * @val: storage for the property value
> + *
> + * This function retrieves the softare state of the given property for the given
> + * property. Since there is no driver callback to retrieve the current property
> + * value this might be out of sync with the hardware, depending upon the driver
> + * and property.
> + *
> + * Returns:
> + * Zero on success, error code on failure.
> + */
> +int drm_object_property_get_value(struct drm_mode_object *obj,
> + struct drm_property *property, uint64_t *val)
> +{
> + int i;
> +
> + /* read-only properties bypass atomic mechanism and still store
> + * their value in obj->properties->values[].. mostly to avoid
> + * having to deal w/ EDID and similar props in atomic paths:
> + */
> + if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
> + !(property->flags & DRM_MODE_PROP_IMMUTABLE))
> + return drm_atomic_get_property(obj, property, val);
> +
> + for (i = 0; i < obj->properties->count; i++) {
> + if (obj->properties->properties[i] == property) {
> + *val = obj->properties->values[i];
> + return 0;
> + }
> +
> + }
> +
> + return -EINVAL;
> +}
> +EXPORT_SYMBOL(drm_object_property_get_value);
> +
> +/* helper for getconnector and getproperties ioctls */
> +int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
> + uint32_t __user *prop_ptr,
> + uint64_t __user *prop_values,
> + uint32_t *arg_count_props)
> +{
> + int props_count;
> + int i, ret, copied;
> +
> + props_count = obj->properties->count;
> + if (!atomic)
> + props_count -= obj->properties->atomic_count;
> +
> + if ((*arg_count_props >= props_count) && props_count) {
> + for (i = 0, copied = 0; copied < props_count; i++) {
> + struct drm_property *prop = obj->properties->properties[i];
> + uint64_t val;
> +
> + if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
> + continue;
> +
> + ret = drm_object_property_get_value(obj, prop, &val);
> + if (ret)
> + return ret;
> +
> + if (put_user(prop->base.id, prop_ptr + copied))
> + return -EFAULT;
> +
> + if (put_user(val, prop_values + copied))
> + return -EFAULT;
> +
> + copied++;
> + }
> + }
> + *arg_count_props = props_count;
> +
> + return 0;
> +}
> +
> +/**
> + * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
> + * @dev: DRM device
> + * @data: ioctl data
> + * @file_priv: DRM file info
> + *
> + * This function retrieves the current value for an object's property. Compared
> + * to the connector specific ioctl this one is extended to also work on crtc and
> + * plane objects.
> + *
> + * Called by the user via ioctl.
> + *
> + * Returns:
> + * Zero on success, negative errno on failure.
> + */
> +int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
> + struct drm_file *file_priv)
> +{
> + struct drm_mode_obj_get_properties *arg = data;
> + struct drm_mode_object *obj;
> + int ret = 0;
> +
> + if (!drm_core_check_feature(dev, DRIVER_MODESET))
> + return -EINVAL;
> +
> + drm_modeset_lock_all(dev);
> +
> + obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
> + if (!obj) {
> + ret = -ENOENT;
> + goto out;
> + }
> + if (!obj->properties) {
> + ret = -EINVAL;
> + goto out_unref;
> + }
> +
> + ret = drm_mode_object_get_properties(obj, file_priv->atomic,
> + (uint32_t __user *)(unsigned long)(arg->props_ptr),
> + (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
> + &arg->count_props);
> +
> +out_unref:
> + drm_mode_object_unreference(obj);
> +out:
> + drm_modeset_unlock_all(dev);
> + return ret;
> +}
> +
> +int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
> + struct drm_file *file_priv)
> +{
> + struct drm_mode_obj_set_property *arg = data;
> + struct drm_mode_object *arg_obj;
> + struct drm_mode_object *prop_obj;
> + struct drm_property *property;
> + int i, ret = -EINVAL;
> + struct drm_mode_object *ref;
> +
> + if (!drm_core_check_feature(dev, DRIVER_MODESET))
> + return -EINVAL;
> +
> + drm_modeset_lock_all(dev);
> +
> + arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
> + if (!arg_obj) {
> + ret = -ENOENT;
> + goto out;
> + }
> + if (!arg_obj->properties)
> + goto out_unref;
> +
> + for (i = 0; i < arg_obj->properties->count; i++)
> + if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
> + break;
> +
> + if (i == arg_obj->properties->count)
> + goto out_unref;
> +
> + prop_obj = drm_mode_object_find(dev, arg->prop_id,
> + DRM_MODE_OBJECT_PROPERTY);
> + if (!prop_obj) {
> + ret = -ENOENT;
> + goto out_unref;
> + }
> + property = obj_to_property(prop_obj);
> +
> + if (!drm_property_change_valid_get(property, arg->value, &ref))
> + goto out_unref;
> +
> + switch (arg_obj->type) {
> + case DRM_MODE_OBJECT_CONNECTOR:
> + ret = drm_mode_connector_set_obj_prop(arg_obj, property,
> + arg->value);
> + break;
> + case DRM_MODE_OBJECT_CRTC:
> + ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
> + break;
> + case DRM_MODE_OBJECT_PLANE:
> + ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
> + property, arg->value);
> + break;
> + }
> +
> + drm_property_change_valid_put(property, ref);
> +
> +out_unref:
> + drm_mode_object_unreference(arg_obj);
> +out:
> + drm_modeset_unlock_all(dev);
> + return ret;
> +}
> diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
> index f1576db6c044..66b7d6744dd2 100644
> --- a/include/drm/drm_connector.h
> +++ b/include/drm/drm_connector.h
> @@ -25,7 +25,7 @@
>
> #include <linux/list.h>
> #include <linux/ctype.h>
> -#include <drm/drm_modeset.h>
> +#include <drm/drm_mode_object.h>
>
> struct drm_connector_helper_funcs;
> struct drm_device;
> diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
> index 61d81fb3c8fc..1abcc182e92b 100644
> --- a/include/drm/drm_crtc.h
> +++ b/include/drm/drm_crtc.h
> @@ -36,7 +36,7 @@
> #include <uapi/drm/drm_fourcc.h>
> #include <drm/drm_modeset_lock.h>
> #include <drm/drm_rect.h>
> -#include <drm/drm_modeset.h>
> +#include <drm/drm_mode_object.h>
> #include <drm/drm_framebuffer.h>
> #include <drm/drm_modes.h>
> #include <drm/drm_connector.h>
> @@ -2093,16 +2093,6 @@ static inline bool drm_property_type_is(struct drm_property *property,
> return property->flags & type;
> }
>
> -extern int drm_object_property_set_value(struct drm_mode_object *obj,
> - struct drm_property *property,
> - uint64_t val);
> -extern int drm_object_property_get_value(struct drm_mode_object *obj,
> - struct drm_property *property,
> - uint64_t *value);
> -
> -extern void drm_object_attach_property(struct drm_mode_object *obj,
> - struct drm_property *property,
> - uint64_t init_val);
> extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
> const char *name, int num_values);
> extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
> diff --git a/include/drm/drm_encoder.h b/include/drm/drm_encoder.h
> index b049748b2514..4f066eedd039 100644
> --- a/include/drm/drm_encoder.h
> +++ b/include/drm/drm_encoder.h
> @@ -25,7 +25,7 @@
>
> #include <linux/list.h>
> #include <linux/ctype.h>
> -#include <drm/drm_modeset.h>
> +#include <drm/drm_mode_object.h>
>
> /**
> * struct drm_encoder_funcs - encoder controls
> diff --git a/include/drm/drm_framebuffer.h b/include/drm/drm_framebuffer.h
> index 50deb40d3bfd..b2554c50a903 100644
> --- a/include/drm/drm_framebuffer.h
> +++ b/include/drm/drm_framebuffer.h
> @@ -25,7 +25,7 @@
>
> #include <linux/list.h>
> #include <linux/ctype.h>
> -#include <drm/drm_modeset.h>
> +#include <drm/drm_mode_object.h>
>
> struct drm_framebuffer;
> struct drm_file;
> diff --git a/include/drm/drm_mode_object.h b/include/drm/drm_mode_object.h
> new file mode 100644
> index 000000000000..c0e4414299f7
> --- /dev/null
> +++ b/include/drm/drm_mode_object.h
> @@ -0,0 +1,80 @@
> +/*
> + * Copyright (c) 2016 Intel Corporation
> + *
> + * Permission to use, copy, modify, distribute, and sell this software and its
> + * documentation for any purpose is hereby granted without fee, provided that
> + * the above copyright notice appear in all copies and that both that copyright
> + * notice and this permission notice appear in supporting documentation, and
> + * that the name of the copyright holders not be used in advertising or
> + * publicity pertaining to distribution of the software without specific,
> + * written prior permission. The copyright holders make no representations
> + * about the suitability of this software for any purpose. It is provided "as
> + * is" without express or implied warranty.
> + *
> + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
> + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
> + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
> + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
> + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
> + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
> + * OF THIS SOFTWARE.
> + */
> +
> +#ifndef __DRM_MODESET_H__
> +#define __DRM_MODESET_H__
> +
> +#include <linux/kref.h>
> +struct drm_object_properties;
> +struct drm_property;
> +
> +struct drm_mode_object {
> + uint32_t id;
> + uint32_t type;
> + struct drm_object_properties *properties;
> + struct kref refcount;
> + void (*free_cb)(struct kref *kref);
> +};
> +
> +#define DRM_OBJECT_MAX_PROPERTY 24
> +struct drm_object_properties {
> + int count, atomic_count;
> + /* NOTE: if we ever start dynamically destroying properties (ie.
> + * not at drm_mode_config_cleanup() time), then we'd have to do
> + * a better job of detaching property from mode objects to avoid
> + * dangling property pointers:
> + */
> + struct drm_property *properties[DRM_OBJECT_MAX_PROPERTY];
> + /* do not read/write values directly, but use drm_object_property_get_value()
> + * and drm_object_property_set_value():
> + */
> + uint64_t values[DRM_OBJECT_MAX_PROPERTY];
> +};
> +
> +/* Avoid boilerplate. I'm tired of typing. */
> +#define DRM_ENUM_NAME_FN(fnname, list) \
> + const char *fnname(int val) \
> + { \
> + int i; \
> + for (i = 0; i < ARRAY_SIZE(list); i++) { \
> + if (list[i].type == val) \
> + return list[i].name; \
> + } \
> + return "(unknown)"; \
> + }
> +
> +struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
> + uint32_t id, uint32_t type);
> +void drm_mode_object_reference(struct drm_mode_object *obj);
> +void drm_mode_object_unreference(struct drm_mode_object *obj);
> +
> +int drm_object_property_set_value(struct drm_mode_object *obj,
> + struct drm_property *property,
> + uint64_t val);
> +int drm_object_property_get_value(struct drm_mode_object *obj,
> + struct drm_property *property,
> + uint64_t *value);
> +
> +void drm_object_attach_property(struct drm_mode_object *obj,
> + struct drm_property *property,
> + uint64_t init_val);
> +#endif
> diff --git a/include/drm/drm_modes.h b/include/drm/drm_modes.h
> index 1621e9b32330..011f199d3bcf 100644
> --- a/include/drm/drm_modes.h
> +++ b/include/drm/drm_modes.h
> @@ -27,7 +27,7 @@
> #ifndef __DRM_MODES_H__
> #define __DRM_MODES_H__
>
> -#include <drm/drm_modeset.h>
> +#include <drm/drm_mode_object.h>
> #include <drm/drm_connector.h>
>
> /*
> diff --git a/include/drm/drm_modeset.h b/include/drm/drm_modeset.h
> deleted file mode 100644
> index fe910d5efe12..000000000000
> --- a/include/drm/drm_modeset.h
> +++ /dev/null
> @@ -1,70 +0,0 @@
> -/*
> - * Copyright (c) 2016 Intel Corporation
> - *
> - * Permission to use, copy, modify, distribute, and sell this software and its
> - * documentation for any purpose is hereby granted without fee, provided that
> - * the above copyright notice appear in all copies and that both that copyright
> - * notice and this permission notice appear in supporting documentation, and
> - * that the name of the copyright holders not be used in advertising or
> - * publicity pertaining to distribution of the software without specific,
> - * written prior permission. The copyright holders make no representations
> - * about the suitability of this software for any purpose. It is provided "as
> - * is" without express or implied warranty.
> - *
> - * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
> - * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
> - * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
> - * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
> - * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
> - * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
> - * OF THIS SOFTWARE.
> - */
> -
> -#ifndef __DRM_MODESET_H__
> -#define __DRM_MODESET_H__
> -
> -#include <linux/kref.h>
> -struct drm_object_properties;
> -struct drm_property;
> -
> -struct drm_mode_object {
> - uint32_t id;
> - uint32_t type;
> - struct drm_object_properties *properties;
> - struct kref refcount;
> - void (*free_cb)(struct kref *kref);
> -};
> -
> -#define DRM_OBJECT_MAX_PROPERTY 24
> -struct drm_object_properties {
> - int count, atomic_count;
> - /* NOTE: if we ever start dynamically destroying properties (ie.
> - * not at drm_mode_config_cleanup() time), then we'd have to do
> - * a better job of detaching property from mode objects to avoid
> - * dangling property pointers:
> - */
> - struct drm_property *properties[DRM_OBJECT_MAX_PROPERTY];
> - /* do not read/write values directly, but use drm_object_property_get_value()
> - * and drm_object_property_set_value():
> - */
> - uint64_t values[DRM_OBJECT_MAX_PROPERTY];
> -};
> -
> -/* Avoid boilerplate. I'm tired of typing. */
> -#define DRM_ENUM_NAME_FN(fnname, list) \
> - const char *fnname(int val) \
> - { \
> - int i; \
> - for (i = 0; i < ARRAY_SIZE(list); i++) { \
> - if (list[i].type == val) \
> - return list[i].name; \
> - } \
> - return "(unknown)"; \
> - }
> -
> -struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
> - uint32_t id, uint32_t type);
> -void drm_mode_object_reference(struct drm_mode_object *obj);
> -void drm_mode_object_unreference(struct drm_mode_object *obj);
> -
> -#endif
>
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
_______________________________________________
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^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [PATCH 6/9] drm: move drm_mode_legacy_fb_format to drm_fourcc.c
2016-08-17 20:56 ` [PATCH 6/9] drm: move drm_mode_legacy_fb_format to drm_fourcc.c Daniel Vetter
@ 2016-08-25 12:25 ` Archit Taneja
0 siblings, 0 replies; 24+ messages in thread
From: Archit Taneja @ 2016-08-25 12:25 UTC (permalink / raw)
To: Daniel Vetter, DRI Development
Cc: Daniel Vetter, Intel Graphics Development, Laurent Pinchart
On 08/18/2016 02:26 AM, Daniel Vetter wrote:
> It's part of the drm fourcc handling code, mapping the old depth/bpp
> values to new fourcc codes.
Reviewed-by: Archit Taneja <architt@codeaurora.org>
>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> ---
> drivers/gpu/drm/drm_crtc.c | 43 -------------------------------------------
> drivers/gpu/drm/drm_fourcc.c | 43 +++++++++++++++++++++++++++++++++++++++++++
> include/drm/drm_crtc.h | 2 --
> include/drm/drm_fourcc.h | 1 +
> 4 files changed, 44 insertions(+), 45 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
> index d7f68ec049d1..27b49ad0989b 100644
> --- a/drivers/gpu/drm/drm_crtc.c
> +++ b/drivers/gpu/drm/drm_crtc.c
> @@ -1666,49 +1666,6 @@ int drm_mode_cursor2_ioctl(struct drm_device *dev,
> return drm_mode_cursor_common(dev, req, file_priv);
> }
>
> -/**
> - * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
> - * @bpp: bits per pixels
> - * @depth: bit depth per pixel
> - *
> - * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
> - * Useful in fbdev emulation code, since that deals in those values.
> - */
> -uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
> -{
> - uint32_t fmt;
> -
> - switch (bpp) {
> - case 8:
> - fmt = DRM_FORMAT_C8;
> - break;
> - case 16:
> - if (depth == 15)
> - fmt = DRM_FORMAT_XRGB1555;
> - else
> - fmt = DRM_FORMAT_RGB565;
> - break;
> - case 24:
> - fmt = DRM_FORMAT_RGB888;
> - break;
> - case 32:
> - if (depth == 24)
> - fmt = DRM_FORMAT_XRGB8888;
> - else if (depth == 30)
> - fmt = DRM_FORMAT_XRGB2101010;
> - else
> - fmt = DRM_FORMAT_ARGB8888;
> - break;
> - default:
> - DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
> - fmt = DRM_FORMAT_XRGB8888;
> - break;
> - }
> -
> - return fmt;
> -}
> -EXPORT_SYMBOL(drm_mode_legacy_fb_format);
> -
> static bool drm_property_type_valid(struct drm_property *property)
> {
> if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
> diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
> index c81546c15c93..29c56b4331e0 100644
> --- a/drivers/gpu/drm/drm_fourcc.c
> +++ b/drivers/gpu/drm/drm_fourcc.c
> @@ -36,6 +36,49 @@ static char printable_char(int c)
> }
>
> /**
> + * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
> + * @bpp: bits per pixels
> + * @depth: bit depth per pixel
> + *
> + * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
> + * Useful in fbdev emulation code, since that deals in those values.
> + */
> +uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
> +{
> + uint32_t fmt;
> +
> + switch (bpp) {
> + case 8:
> + fmt = DRM_FORMAT_C8;
> + break;
> + case 16:
> + if (depth == 15)
> + fmt = DRM_FORMAT_XRGB1555;
> + else
> + fmt = DRM_FORMAT_RGB565;
> + break;
> + case 24:
> + fmt = DRM_FORMAT_RGB888;
> + break;
> + case 32:
> + if (depth == 24)
> + fmt = DRM_FORMAT_XRGB8888;
> + else if (depth == 30)
> + fmt = DRM_FORMAT_XRGB2101010;
> + else
> + fmt = DRM_FORMAT_ARGB8888;
> + break;
> + default:
> + DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
> + fmt = DRM_FORMAT_XRGB8888;
> + break;
> + }
> +
> + return fmt;
> +}
> +EXPORT_SYMBOL(drm_mode_legacy_fb_format);
> +
> +/**
> * drm_get_format_name - return a string for drm fourcc format
> * @format: format to compute name of
> *
> diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
> index 1abcc182e92b..f5e51e5e9724 100644
> --- a/include/drm/drm_crtc.h
> +++ b/include/drm/drm_crtc.h
> @@ -2135,8 +2135,6 @@ extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
>
> extern int drm_mode_set_config_internal(struct drm_mode_set *set);
>
> -extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
> -
> extern struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
> char topology[8]);
> extern struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
> diff --git a/include/drm/drm_fourcc.h b/include/drm/drm_fourcc.h
> index b106337de1bf..30c30fa87ee8 100644
> --- a/include/drm/drm_fourcc.h
> +++ b/include/drm/drm_fourcc.h
> @@ -25,6 +25,7 @@
> #include <linux/types.h>
> #include <uapi/drm/drm_fourcc.h>
>
> +uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
> void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth, int *bpp);
> int drm_format_num_planes(uint32_t format);
> int drm_format_plane_cpp(uint32_t format, int plane);
>
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
_______________________________________________
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Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [PATCH 7/9] drm: Extract drm_property.[hc]
2016-08-17 20:56 ` [PATCH 7/9] drm: Extract drm_property.[hc] Daniel Vetter
2016-08-18 11:11 ` Emil Velikov
@ 2016-08-25 12:25 ` Archit Taneja
1 sibling, 0 replies; 24+ messages in thread
From: Archit Taneja @ 2016-08-25 12:25 UTC (permalink / raw)
To: Daniel Vetter, DRI Development; +Cc: Daniel Vetter, Intel Graphics Development
On 08/18/2016 02:26 AM, Daniel Vetter wrote:
> This just contains the base property classes and all the code to
> handle blobs. I think for any kind of standardized/shared properties
> it's better to have separate files - this is fairly big already as-is.
>
> v2: resurrect misplaced hunk (Daniel Stone)
>
> Cc: Daniel Stone <daniel@fooishbar.org>
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
checkpatch throws a few errors on usage of spaces instead of tabs,
probably stuff that existed before, but it would be nice to get
rid of them now. Otherwise:
Reviewed-by: Archit Taneja <architt@codeaurora.org>
--
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^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [PATCH 5/9] drm/doc: Polish docs for drm_mode_object
2016-08-17 20:56 ` [PATCH 5/9] drm/doc: Polish docs for drm_mode_object Daniel Vetter
@ 2016-08-25 12:25 ` Archit Taneja
0 siblings, 0 replies; 24+ messages in thread
From: Archit Taneja @ 2016-08-25 12:25 UTC (permalink / raw)
To: Daniel Vetter, DRI Development; +Cc: Intel Graphics Development
On 08/18/2016 02:26 AM, Daniel Vetter wrote:
> I figured an overview section here is overkill, and better
> to just document the 2 structures themselves well enough.
>
> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> ---
> drivers/gpu/drm/drm_mode_object.c | 9 +++++++
> include/drm/drm_mode_object.h | 50 ++++++++++++++++++++++++++++++++++++---
> 2 files changed, 56 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_mode_object.c b/drivers/gpu/drm/drm_mode_object.c
> index a92aeed51156..a4dd3fa258b4 100644
> --- a/drivers/gpu/drm/drm_mode_object.c
> +++ b/drivers/gpu/drm/drm_mode_object.c
> @@ -222,6 +222,12 @@ EXPORT_SYMBOL(drm_object_attach_property);
> * changes the software state of the property, it does not call into the
> * driver's ->set_property callback.
> *
> + * Note that atomic drivers should not have any need to call this, the core will
> + * ensure consistency of values reported back to userspace through the
> + * appropriate ->atomic_get_property callback. Only legacy drivers should call
> + * this function to update the tracked value (after clamping and other
> + * restrictions have been applied).
> + *
> * Returns:
> * Zero on success, error code on failure.
> */
> @@ -252,6 +258,9 @@ EXPORT_SYMBOL(drm_object_property_set_value);
> * value this might be out of sync with the hardware, depending upon the driver
> * and property.
> *
> + * Atomic drivers should never call this function directly, the core will read
> + * out property values through the various ->atomic_get_property callbacks.
> + *
> * Returns:
> * Zero on success, error code on failure.
> */
> diff --git a/include/drm/drm_mode_object.h b/include/drm/drm_mode_object.h
> index b8adb6425f2a..7967ffeda3c4 100644
> --- a/include/drm/drm_mode_object.h
> +++ b/include/drm/drm_mode_object.h
> @@ -27,6 +27,28 @@
> struct drm_object_properties;
> struct drm_property;
>
> +/**
> + * struct drm_mode_object - base structure for modeset objecst
s/objecst/object
> + * @id: userspace visible identifier
> + * @type: type of the object, one of DRM_MODE_OBJECT\_\*
> + * @properties: properties attached to this object, including values
> + * @refcount: reference count for objects which with dynamic lifetime
> + * @free_cb: free function callback, only set for objects with dynamic lifetime
> + *
> + * Base structure for modeset objects visible to userspace. Objects can be
> + * looked up using drm_mode_object_find(). Besides basic uapi interface
> + * properties like @id and @type it provides two servies:
s/servies/services
> + *
> + * - It tracks attached properties and their values. This is used by &drm_crtc,
> + * &drm_plane and &drm_connector. Properties are attached by calling
> + * drm_object_attach_property() before the object is visible to userspace.
> + *
> + * - For objects with dynamic lifetimes (as indicated by a non-NULL @free_cb) it
> + * provides reference counting through drm_mode_object_reference() and
> + * drm_mode_object_unreference(). This is used by &drm_framebuffer,
> + * &drm_connector and &drm_property_blob. These objects provide specialized
> + * reference counting wrappers.
> + */
> struct drm_mode_object {
> uint32_t id;
> uint32_t type;
> @@ -36,16 +58,38 @@ struct drm_mode_object {
> };
>
> #define DRM_OBJECT_MAX_PROPERTY 24
> +/**
> + * struct drm_object_properties - property tracking for &drm_mode_object
> + */
> struct drm_object_properties {
> + /**
> + * @count: number of valid properties, must be less than or equal to
> + * DRM_OBJECT_MAX_PROPERTY.
> + */
> +
> int count;
> - /* NOTE: if we ever start dynamically destroying properties (ie.
> + /**
> + * @properties: Array of pointers to &drm_property.
> + *
> + * NOTE: if we ever start dynamically destroying properties (ie.
> * not at drm_mode_config_cleanup() time), then we'd have to do
> * a better job of detaching property from mode objects to avoid
> * dangling property pointers:
> */
> struct drm_property *properties[DRM_OBJECT_MAX_PROPERTY];
> - /* do not read/write values directly, but use drm_object_property_get_value()
> - * and drm_object_property_set_value():
> +
> + /**
> + * @values: Array to store the property values, matching @properties. Do
> + * not read/write values directly, but use
> + * drm_object_property_get_value() and drm_object_property_set_value().
> + *
> + * Note that atomic drivers do not store mutable properties in this
> + * aray, but only the decoded values in the corresponding state
s/aray/array
Otherwise:
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Archit
> + * structure. The decoding is done using the ->atomic_get_property and
> + * ->atomic_set_property hooks of the corresponding object. Hence atomic
> + * drivers should not use drm_object_property_set_value() and
> + * drm_object_property_get_value() on mutable objects, i.e. those
> + * without the DRM_MODE_PROP_IMMUTABLE flag set.
> */
> uint64_t values[DRM_OBJECT_MAX_PROPERTY];
> };
>
--
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a Linux Foundation Collaborative Project
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^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [PATCH 8/9] drm: Unify handling of blob and object properties
2016-08-17 20:56 ` [PATCH 8/9] drm: Unify handling of blob and object properties Daniel Vetter
@ 2016-08-25 12:26 ` Archit Taneja
0 siblings, 0 replies; 24+ messages in thread
From: Archit Taneja @ 2016-08-25 12:26 UTC (permalink / raw)
To: Daniel Vetter, DRI Development; +Cc: Intel Graphics Development, Daniel Stone
On 08/18/2016 02:26 AM, Daniel Vetter wrote:
> They work exactly the same now, after the refcounting unification a bit
> ago. The only reason they're distinct is backwards compat with existing
> userspace.
>
> Cc: Daniel Stone <daniels@collabora.com>
> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Archit
> ---
> drivers/gpu/drm/drm_property.c | 23 +++++------------------
> 1 file changed, 5 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_property.c b/drivers/gpu/drm/drm_property.c
> index 162cc9032ae5..b5521f705b1c 100644
> --- a/drivers/gpu/drm/drm_property.c
> +++ b/drivers/gpu/drm/drm_property.c
> @@ -911,20 +911,8 @@ bool drm_property_change_valid_get(struct drm_property *property,
> for (i = 0; i < property->num_values; i++)
> valid_mask |= (1ULL << property->values[i]);
> return !(value & ~valid_mask);
> - } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
> - struct drm_property_blob *blob;
> -
> - if (value == 0)
> - return true;
> -
> - blob = drm_property_lookup_blob(property->dev, value);
> - if (blob) {
> - *ref = &blob->base;
> - return true;
> - } else {
> - return false;
> - }
> - } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
> + } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB) ||
> + drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
> /* a zero value for an object property translates to null: */
> if (value == 0)
> return true;
> @@ -941,13 +929,12 @@ bool drm_property_change_valid_get(struct drm_property *property,
> }
>
> void drm_property_change_valid_put(struct drm_property *property,
> - struct drm_mode_object *ref)
> + struct drm_mode_object *ref)
> {
> if (!ref)
> return;
>
> - if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
> + if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT) ||
> + drm_property_type_is(property, DRM_MODE_PROP_BLOB))
> drm_mode_object_unreference(ref);
> - } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
> - drm_property_unreference_blob(obj_to_blob(ref));
> }
>
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
_______________________________________________
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^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [PATCH 1/9] drm: Extract drm_encoder.[hc]
2016-08-25 12:23 ` [PATCH 1/9] " Archit Taneja
@ 2016-08-25 19:38 ` Daniel Vetter
0 siblings, 0 replies; 24+ messages in thread
From: Daniel Vetter @ 2016-08-25 19:38 UTC (permalink / raw)
To: Archit Taneja
Cc: Daniel Vetter, Intel Graphics Development, DRI Development,
Daniel Vetter
On Thu, Aug 25, 2016 at 05:53:51PM +0530, Archit Taneja wrote:
>
> Hi,
>
> On 08/18/2016 02:25 AM, Daniel Vetter wrote:
> > Same treatment as before. Only hiccup is drm_crtc_mask, which
> > unfortunately can't be resolved until drm_crtc.h is less of a monster.
> > Untangle the header loop with a forward delcaration for that static
>
> s/delcaration/declaration
>
> > inline.
> >
> > Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> > ---
> > Documentation/gpu/drm-kms.rst | 9 ++
> > drivers/gpu/drm/Makefile | 3 +-
> > drivers/gpu/drm/drm_crtc.c | 193 -------------------------------
> > drivers/gpu/drm/drm_crtc_internal.h | 10 +-
> > drivers/gpu/drm/drm_encoder.c | 220 ++++++++++++++++++++++++++++++++++++
> > include/drm/drm_crtc.h | 134 +---------------------
> > include/drm/drm_encoder.h | 167 +++++++++++++++++++++++++++
> > 7 files changed, 407 insertions(+), 329 deletions(-)
> > create mode 100644 drivers/gpu/drm/drm_encoder.c
> > create mode 100644 include/drm/drm_encoder.h
> >
>
> <snip>
>
> > +
> > +/**
> > + * drm_encoder_init - Init a preallocated encoder
> > + * @dev: drm device
> > + * @encoder: the encoder to init
> > + * @funcs: callbacks for this encoder
> > + * @encoder_type: user visible type of the encoder
> > + * @name: printf style format string for the encoder name, or NULL for default name
> > + *
> > + * Initialises a preallocated encoder. Encoder should be
> > + * subclassed as part of driver encoder objects.
> > + *
> > + * Returns:
> > + * Zero on success, error code on failure.
> > + */
> > +int drm_encoder_init(struct drm_device *dev,
> > + struct drm_encoder *encoder,
> > + const struct drm_encoder_funcs *funcs,
> > + int encoder_type, const char *name, ...)
>
> Alignment with the open parentheses is needed here.
>
> > +{
> > + int ret;
> > +
> > + drm_modeset_lock_all(dev);
> > +
> > + ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
> > + if (ret)
> > + goto out_unlock;
> > +
> > + encoder->dev = dev;
> > + encoder->encoder_type = encoder_type;
> > + encoder->funcs = funcs;
> > + if (name) {
> > + va_list ap;
> > +
> > + va_start(ap, name);
> > + encoder->name = kvasprintf(GFP_KERNEL, name, ap);
> > + va_end(ap);
> > + } else {
> > + encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
> > + drm_encoder_enum_list[encoder_type].name,
> > + encoder->base.id);
> > + }
> > + if (!encoder->name) {
> > + ret = -ENOMEM;
> > + goto out_put;
> > + }
> > +
> > + list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
> > + encoder->index = dev->mode_config.num_encoder++;
> > +
> > +out_put:
> > + if (ret)
> > + drm_mode_object_unregister(dev, &encoder->base);
> > +
> > +out_unlock:
> > + drm_modeset_unlock_all(dev);
> > +
> > + return ret;
> > +}
> > +EXPORT_SYMBOL(drm_encoder_init);
> > +
> > +/**
> > + * drm_encoder_cleanup - cleans up an initialised encoder
> > + * @encoder: encoder to cleanup
> > + *
> > + * Cleans up the encoder but doesn't free the object.
> > + */
> > +void drm_encoder_cleanup(struct drm_encoder *encoder)
> > +{
> > + struct drm_device *dev = encoder->dev;
> > +
> > + /* Note that the encoder_list is considered to be static; should we
> > + * remove the drm_encoder at runtime we would have to decrement all
> > + * the indices on the drm_encoder after us in the encoder_list.
> > + */
> > +
> > + drm_modeset_lock_all(dev);
> > + drm_mode_object_unregister(dev, &encoder->base);
> > + kfree(encoder->name);
> > + list_del(&encoder->head);
> > + dev->mode_config.num_encoder--;
> > + drm_modeset_unlock_all(dev);
> > +
> > + memset(encoder, 0, sizeof(*encoder));
> > +}
> > +EXPORT_SYMBOL(drm_encoder_cleanup);
> > +
> > +static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
> > +{
> > + struct drm_connector *connector;
> > + struct drm_device *dev = encoder->dev;
> > + bool uses_atomic = false;
> > +
> > + /* For atomic drivers only state objects are synchronously updated and
> > + * protected by modeset locks, so check those first. */
> > + drm_for_each_connector(connector, dev) {
> > + if (!connector->state)
> > + continue;
> > +
> > + uses_atomic = true;
> > +
> > + if (connector->state->best_encoder != encoder)
> > + continue;
> > +
> > + return connector->state->crtc;
> > + }
> > +
> > + /* Don't return stale data (e.g. pending async disable). */
> > + if (uses_atomic)
> > + return NULL;
> > +
> > + return encoder->crtc;
> > +}
> > +
> > +/**
> > + * drm_mode_getencoder - get encoder configuration
> > + * @dev: drm device for the ioctl
> > + * @data: data pointer for the ioctl
> > + * @file_priv: drm file for the ioctl call
> > + *
> > + * Construct a encoder configuration structure to return to the user.
> > + *
> > + * Called by the user via ioctl.
> > + *
> > + * Returns:
> > + * Zero on success, negative errno on failure.
> > + */
> > +int drm_mode_getencoder(struct drm_device *dev, void *data,
> > + struct drm_file *file_priv)
> > +{
> > + struct drm_mode_get_encoder *enc_resp = data;
> > + struct drm_encoder *encoder;
> > + struct drm_crtc *crtc;
> > +
> > + if (!drm_core_check_feature(dev, DRIVER_MODESET))
> > + return -EINVAL;
> > +
> > + encoder = drm_encoder_find(dev, enc_resp->encoder_id);
> > + if (!encoder)
> > + return -ENOENT;
> > +
> > + drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
> > + crtc = drm_encoder_get_crtc(encoder);
> > + if (crtc)
> > + enc_resp->crtc_id = crtc->base.id;
> > + else
> > + enc_resp->crtc_id = 0;
> > + drm_modeset_unlock(&dev->mode_config.connection_mutex);
> > +
> > + enc_resp->encoder_type = encoder->encoder_type;
> > + enc_resp->encoder_id = encoder->base.id;
> > + enc_resp->possible_crtcs = encoder->possible_crtcs;
> > + enc_resp->possible_clones = encoder->possible_clones;
> > +
> > + return 0;
> > +}
> > diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
> > index 3fa0275e509f..61d81fb3c8fc 100644
> > --- a/include/drm/drm_crtc.h
> > +++ b/include/drm/drm_crtc.h
> > @@ -40,6 +40,7 @@
> > #include <drm/drm_framebuffer.h>
> > #include <drm/drm_modes.h>
> > #include <drm/drm_connector.h>
> > +#include <drm/drm_encoder.h>
> >
> > struct drm_device;
> > struct drm_mode_set;
> > @@ -662,97 +663,6 @@ struct drm_crtc {
> > };
> >
> > /**
> > - * struct drm_encoder_funcs - encoder controls
> > - *
> > - * Encoders sit between CRTCs and connectors.
> > - */
> > -struct drm_encoder_funcs {
> > - /**
> > - * @reset:
> > - *
> > - * Reset encoder hardware and software state to off. This function isn't
> > - * called by the core directly, only through drm_mode_config_reset().
> > - * It's not a helper hook only for historical reasons.
> > - */
> > - void (*reset)(struct drm_encoder *encoder);
> > -
> > - /**
> > - * @destroy:
> > - *
> > - * Clean up encoder resources. This is only called at driver unload time
> > - * through drm_mode_config_cleanup() since an encoder cannot be
> > - * hotplugged in DRM.
> > - */
> > - void (*destroy)(struct drm_encoder *encoder);
> > -
> > - /**
> > - * @late_register:
> > - *
> > - * This optional hook can be used to register additional userspace
> > - * interfaces attached to the encoder like debugfs interfaces.
> > - * It is called late in the driver load sequence from drm_dev_register().
> > - * Everything added from this callback should be unregistered in
> > - * the early_unregister callback.
> > - *
> > - * Returns:
> > - *
> > - * 0 on success, or a negative error code on failure.
> > - */
> > - int (*late_register)(struct drm_encoder *encoder);
> > -
> > - /**
> > - * @early_unregister:
> > - *
> > - * This optional hook should be used to unregister the additional
> > - * userspace interfaces attached to the encoder from
> > - * late_unregister(). It is called from drm_dev_unregister(),
> > - * early in the driver unload sequence to disable userspace access
> > - * before data structures are torndown.
> > - */
> > - void (*early_unregister)(struct drm_encoder *encoder);
> > -};
> > -
> > -/**
> > - * struct drm_encoder - central DRM encoder structure
> > - * @dev: parent DRM device
> > - * @head: list management
> > - * @base: base KMS object
> > - * @name: human readable name, can be overwritten by the driver
> > - * @encoder_type: one of the DRM_MODE_ENCODER_<foo> types in drm_mode.h
> > - * @possible_crtcs: bitmask of potential CRTC bindings
> > - * @possible_clones: bitmask of potential sibling encoders for cloning
> > - * @crtc: currently bound CRTC
> > - * @bridge: bridge associated to the encoder
> > - * @funcs: control functions
> > - * @helper_private: mid-layer private data
> > - *
> > - * CRTCs drive pixels to encoders, which convert them into signals
> > - * appropriate for a given connector or set of connectors.
> > - */
> > -struct drm_encoder {
> > - struct drm_device *dev;
> > - struct list_head head;
> > -
> > - struct drm_mode_object base;
> > - char *name;
> > - int encoder_type;
> > -
> > - /**
> > - * @index: Position inside the mode_config.list, can be used as an array
> > - * index. It is invariant over the lifetime of the encoder.
> > - */
> > - unsigned index;
> > -
> > - uint32_t possible_crtcs;
> > - uint32_t possible_clones;
> > -
> > - struct drm_crtc *crtc;
> > - struct drm_bridge *bridge;
> > - const struct drm_encoder_funcs *funcs;
> > - const struct drm_encoder_helper_funcs *helper_private;
> > -};
> > -
> > -/**
> > * struct drm_plane_state - mutable plane state
> > * @plane: backpointer to the plane
> > * @crtc: currently bound CRTC, NULL if disabled
> > @@ -2091,7 +2001,6 @@ struct drm_mode_config {
> > for_each_if ((encoder_mask) & (1 << drm_encoder_index(encoder)))
> >
> > #define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
> > -#define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
> > #define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
> > #define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
> > #define obj_to_property(x) container_of(x, struct drm_property, base)
> > @@ -2136,37 +2045,6 @@ static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc)
> > return 1 << drm_crtc_index(crtc);
> > }
> >
> > -extern __printf(5, 6)
> > -int drm_encoder_init(struct drm_device *dev,
> > - struct drm_encoder *encoder,
> > - const struct drm_encoder_funcs *funcs,
> > - int encoder_type, const char *name, ...);
> > -
> > -/**
> > - * drm_encoder_index - find the index of a registered encoder
> > - * @encoder: encoder to find index for
> > - *
> > - * Given a registered encoder, return the index of that encoder within a DRM
> > - * device's list of encoders.
> > - */
> > -static inline unsigned int drm_encoder_index(struct drm_encoder *encoder)
> > -{
> > - return encoder->index;
> > -}
> > -
> > -/**
> > - * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
> > - * @encoder: encoder to test
> > - * @crtc: crtc to test
> > - *
> > - * Return false if @encoder can't be driven by @crtc, true otherwise.
> > - */
> > -static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
> > - struct drm_crtc *crtc)
> > -{
> > - return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
> > -}
> > -
> > extern __printf(8, 9)
> > int drm_universal_plane_init(struct drm_device *dev,
> > struct drm_plane *plane,
> > @@ -2202,8 +2080,6 @@ extern void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
> > extern int drm_crtc_force_disable(struct drm_crtc *crtc);
> > extern int drm_crtc_force_disable_all(struct drm_device *dev);
> >
> > -extern void drm_encoder_cleanup(struct drm_encoder *encoder);
> > -
> > extern void drm_mode_config_init(struct drm_device *dev);
> > extern void drm_mode_config_reset(struct drm_device *dev);
> > extern void drm_mode_config_cleanup(struct drm_device *dev);
> > @@ -2315,14 +2191,6 @@ static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,
> > return mo ? obj_to_crtc(mo) : NULL;
> > }
> >
> > -static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev,
> > - uint32_t id)
> > -{
> > - struct drm_mode_object *mo;
> > - mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
> > - return mo ? obj_to_encoder(mo) : NULL;
> > -}
> > -
> > static inline struct drm_property *drm_property_find(struct drm_device *dev,
> > uint32_t id)
> > {
> > diff --git a/include/drm/drm_encoder.h b/include/drm/drm_encoder.h
> > new file mode 100644
> > index 000000000000..2712fd1a686b
> > --- /dev/null
> > +++ b/include/drm/drm_encoder.h
> > @@ -0,0 +1,167 @@
> > +/*
> > + * Copyright (c) 2016 Intel Corporation
> > + *
> > + * Permission to use, copy, modify, distribute, and sell this software and its
> > + * documentation for any purpose is hereby granted without fee, provided that
> > + * the above copyright notice appear in all copies and that both that copyright
> > + * notice and this permission notice appear in supporting documentation, and
> > + * that the name of the copyright holders not be used in advertising or
> > + * publicity pertaining to distribution of the software without specific,
> > + * written prior permission. The copyright holders make no representations
> > + * about the suitability of this software for any purpose. It is provided "as
> > + * is" without express or implied warranty.
> > + *
> > + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
> > + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
> > + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
> > + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
> > + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
> > + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
> > + * OF THIS SOFTWARE.
> > + */
> > +
> > +#ifndef __DRM_ENCODER_H__
> > +#define __DRM_ENCODER_H__
> > +
> > +#include <linux/list.h>
> > +#include <linux/ctype.h>
> > +#include <drm/drm_modeset.h>
> > +
> > +/**
> > + * struct drm_encoder_funcs - encoder controls
> > + *
> > + * Encoders sit between CRTCs and connectors.
> > + */
> > +struct drm_encoder_funcs {
> > + /**
> > + * @reset:
> > + *
> > + * Reset encoder hardware and software state to off. This function isn't
> > + * called by the core directly, only through drm_mode_config_reset().
> > + * It's not a helper hook only for historical reasons.
> > + */
> > + void (*reset)(struct drm_encoder *encoder);
> > +
> > + /**
> > + * @destroy:
> > + *
> > + * Clean up encoder resources. This is only called at driver unload time
> > + * through drm_mode_config_cleanup() since an encoder cannot be
> > + * hotplugged in DRM.
> > + */
> > + void (*destroy)(struct drm_encoder *encoder);
> > +
> > + /**
> > + * @late_register:
> > + *
> > + * This optional hook can be used to register additional userspace
> > + * interfaces attached to the encoder like debugfs interfaces.
> > + * It is called late in the driver load sequence from drm_dev_register().
> > + * Everything added from this callback should be unregistered in
> > + * the early_unregister callback.
> > + *
> > + * Returns:
> > + *
> > + * 0 on success, or a negative error code on failure.
> > + */
> > + int (*late_register)(struct drm_encoder *encoder);
> > +
> > + /**
> > + * @early_unregister:
> > + *
> > + * This optional hook should be used to unregister the additional
> > + * userspace interfaces attached to the encoder from
> > + * late_unregister(). It is called from drm_dev_unregister(),
> > + * early in the driver unload sequence to disable userspace access
> > + * before data structures are torndown.
> > + */
> > + void (*early_unregister)(struct drm_encoder *encoder);
> > +};
> > +
> > +/**
> > + * struct drm_encoder - central DRM encoder structure
> > + * @dev: parent DRM device
> > + * @head: list management
> > + * @base: base KMS object
> > + * @name: human readable name, can be overwritten by the driver
> > + * @encoder_type: one of the DRM_MODE_ENCODER_<foo> types in drm_mode.h
> > + * @possible_crtcs: bitmask of potential CRTC bindings
> > + * @possible_clones: bitmask of potential sibling encoders for cloning
> > + * @crtc: currently bound CRTC
> > + * @bridge: bridge associated to the encoder
> > + * @funcs: control functions
> > + * @helper_private: mid-layer private data
> > + *
> > + * CRTCs drive pixels to encoders, which convert them into signals
> > + * appropriate for a given connector or set of connectors.
> > + */
> > +struct drm_encoder {
> > + struct drm_device *dev;
> > + struct list_head head;
> > +
> > + struct drm_mode_object base;
> > + char *name;
> > + int encoder_type;
> > +
> > + /**
> > + * @index: Position inside the mode_config.list, can be used as an array
> > + * index. It is invariant over the lifetime of the encoder.
> > + */
> > + unsigned index;
> > +
> > + uint32_t possible_crtcs;
> > + uint32_t possible_clones;
> > +
> > + struct drm_crtc *crtc;
> > + struct drm_bridge *bridge;
> > + const struct drm_encoder_funcs *funcs;
> > + const struct drm_encoder_helper_funcs *helper_private;
> > +};
> > +
> > +#define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
> > +
> > +__printf(5, 6)
> > +int drm_encoder_init(struct drm_device *dev,
> > + struct drm_encoder *encoder,
> > + const struct drm_encoder_funcs *funcs,
> > + int encoder_type, const char *name, ...);
> > +
> > +/**
> > + * drm_encoder_index - find the index of a registered encoder
> > + * @encoder: encoder to find index for
> > + *
> > + * Given a registered encoder, return the index of that encoder within a DRM
> > + * device's list of encoders.
> > + */
> > +static inline unsigned int drm_encoder_index(struct drm_encoder *encoder)
> > +{
> > + return encoder->index;
> > +}
> > +
> > +/* FIXME: We have an include file mess still, drm_crtc.h needs untangling. */
> > +static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc);
> > +
> > +/**
> > + * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
> > + * @encoder: encoder to test
> > + * @crtc: crtc to test
> > + *
> > + * Return false if @encoder can't be driven by @crtc, true otherwise.
> > + */
> > +static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
> > + struct drm_crtc *crtc)
> > +{
> > + return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
> > +}
> > +
> > +static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev,
> > + uint32_t id)
>
> and here.
>
> > +{
> > + struct drm_mode_object *mo;
> > + mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
>
> checkpatch --strict asks for a blank line above too. Otherwise:
>
> Reviewed-by: Archit Taneja <architt@codeaurora.org>
I intentionally don't reformat/touch code when moving it, at all. Ok if I
just fix the typo in the commit message?
-Daniel
>
> Thanks,
> Archit
>
> > + return mo ? obj_to_encoder(mo) : NULL;
> > +}
> > +
> > +void drm_encoder_cleanup(struct drm_encoder *encoder);
> > +
> > +#endif
> >
>
> --
> Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
> a Linux Foundation Collaborative Project
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [PATCH 3/9] drm: Extract drm_mode_object.[hc]
2016-08-25 12:25 ` Archit Taneja
@ 2016-08-25 19:40 ` Daniel Vetter
2016-08-26 3:16 ` Archit Taneja
0 siblings, 1 reply; 24+ messages in thread
From: Daniel Vetter @ 2016-08-25 19:40 UTC (permalink / raw)
To: Archit Taneja
Cc: Daniel Vetter, Intel Graphics Development, DRI Development,
Daniel Vetter
On Thu, Aug 25, 2016 at 05:55:18PM +0530, Archit Taneja wrote:
> On 08/18/2016 02:26 AM, Daniel Vetter wrote:
> > +void drm_mode_object_unregister(struct drm_device *dev,
> > + struct drm_mode_object *object);
>
> Alignment issue in the declaration here.
Again I don't like touching code when moving it. I guess I'll squash all
your suggestions into the polish patches.
-Daneil
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 24+ messages in thread
* Re: [PATCH 3/9] drm: Extract drm_mode_object.[hc]
2016-08-25 19:40 ` Daniel Vetter
@ 2016-08-26 3:16 ` Archit Taneja
0 siblings, 0 replies; 24+ messages in thread
From: Archit Taneja @ 2016-08-26 3:16 UTC (permalink / raw)
To: Daniel Vetter
Cc: Daniel Vetter, Intel Graphics Development, DRI Development,
Daniel Vetter
On 08/26/2016 01:10 AM, Daniel Vetter wrote:
> On Thu, Aug 25, 2016 at 05:55:18PM +0530, Archit Taneja wrote:
>> On 08/18/2016 02:26 AM, Daniel Vetter wrote:
>>> +void drm_mode_object_unregister(struct drm_device *dev,
>>> + struct drm_mode_object *object);
>>
>> Alignment issue in the declaration here.
>
> Again I don't like touching code when moving it. I guess I'll squash all
> your suggestions into the polish patches.
Sure, that seems like a better idea.
Archit
> -Daneil
>
--
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^ permalink raw reply [flat|nested] 24+ messages in thread
* [PATCH 7/9] drm: Extract drm_property.[hc]
2016-08-29 8:27 Daniel Vetter
@ 2016-08-29 8:27 ` Daniel Vetter
0 siblings, 0 replies; 24+ messages in thread
From: Daniel Vetter @ 2016-08-29 8:27 UTC (permalink / raw)
To: DRI Development; +Cc: Daniel Vetter, Daniel Vetter
This just contains the base property classes and all the code to
handle blobs. I think for any kind of standardized/shared properties
it's better to have separate files - this is fairly big already as-is.
v2: resurrect misplaced hunk (Daniel Stone)
Cc: Daniel Stone <daniel@fooishbar.org>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
---
Documentation/gpu/drm-kms.rst | 9 +
drivers/gpu/drm/Makefile | 2 +-
drivers/gpu/drm/drm_crtc.c | 926 -----------------------------------
drivers/gpu/drm/drm_crtc_internal.h | 32 +-
drivers/gpu/drm/drm_property.c | 953 ++++++++++++++++++++++++++++++++++++
include/drm/drm_crtc.h | 88 +---
include/drm/drm_property.h | 120 +++++
7 files changed, 1102 insertions(+), 1028 deletions(-)
create mode 100644 drivers/gpu/drm/drm_property.c
create mode 100644 include/drm/drm_property.h
diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
index b164472f2157..e07a2667ab61 100644
--- a/Documentation/gpu/drm-kms.rst
+++ b/Documentation/gpu/drm-kms.rst
@@ -389,6 +389,15 @@ connector and plane objects by calling the
pointer to the target object, a pointer to the previously created
property and an initial instance value.
+Property Types and Blob Property Support
+----------------------------------------
+
+.. kernel-doc:: include/drm/drm_property.h
+ :internal:
+
+.. kernel-doc:: drivers/gpu/drm/drm_property.c
+ :export:
+
Blending and Z-Position properties
----------------------------------
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 8d379565ac8e..439d89b25ae0 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -14,7 +14,7 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \
drm_rect.o drm_vma_manager.o drm_flip_work.o \
drm_modeset_lock.o drm_atomic.o drm_bridge.o \
drm_framebuffer.o drm_connector.o drm_blend.o \
- drm_encoder.o drm_mode_object.o
+ drm_encoder.o drm_mode_object.o drm_property.o
drm-$(CONFIG_COMPAT) += drm_ioc32.o
drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 59491fc843b6..0fad433f4d2d 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1666,932 +1666,6 @@ int drm_mode_cursor2_ioctl(struct drm_device *dev,
return drm_mode_cursor_common(dev, req, file_priv);
}
-static bool drm_property_type_valid(struct drm_property *property)
-{
- if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
- return !(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
- return !!(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
-}
-
-/**
- * drm_property_create - create a new property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @num_values: number of pre-defined values
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Note that the DRM core keeps a per-device list of properties and that, if
- * drm_mode_config_cleanup() is called, it will destroy all properties created
- * by the driver.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
-struct drm_property *drm_property_create(struct drm_device *dev, int flags,
- const char *name, int num_values)
-{
- struct drm_property *property = NULL;
- int ret;
-
- property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
- if (!property)
- return NULL;
-
- property->dev = dev;
-
- if (num_values) {
- property->values = kcalloc(num_values, sizeof(uint64_t),
- GFP_KERNEL);
- if (!property->values)
- goto fail;
- }
-
- ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
- if (ret)
- goto fail;
-
- property->flags = flags;
- property->num_values = num_values;
- INIT_LIST_HEAD(&property->enum_list);
-
- if (name) {
- strncpy(property->name, name, DRM_PROP_NAME_LEN);
- property->name[DRM_PROP_NAME_LEN-1] = '\0';
- }
-
- list_add_tail(&property->head, &dev->mode_config.property_list);
-
- WARN_ON(!drm_property_type_valid(property));
-
- return property;
-fail:
- kfree(property->values);
- kfree(property);
- return NULL;
-}
-EXPORT_SYMBOL(drm_property_create);
-
-/**
- * drm_property_create_enum - create a new enumeration property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @props: enumeration lists with property values
- * @num_values: number of pre-defined values
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Userspace is only allowed to set one of the predefined values for enumeration
- * properties.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
-struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
- const char *name,
- const struct drm_prop_enum_list *props,
- int num_values)
-{
- struct drm_property *property;
- int i, ret;
-
- flags |= DRM_MODE_PROP_ENUM;
-
- property = drm_property_create(dev, flags, name, num_values);
- if (!property)
- return NULL;
-
- for (i = 0; i < num_values; i++) {
- ret = drm_property_add_enum(property, i,
- props[i].type,
- props[i].name);
- if (ret) {
- drm_property_destroy(dev, property);
- return NULL;
- }
- }
-
- return property;
-}
-EXPORT_SYMBOL(drm_property_create_enum);
-
-/**
- * drm_property_create_bitmask - create a new bitmask property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @props: enumeration lists with property bitflags
- * @num_props: size of the @props array
- * @supported_bits: bitmask of all supported enumeration values
- *
- * This creates a new bitmask drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Compared to plain enumeration properties userspace is allowed to set any
- * or'ed together combination of the predefined property bitflag values
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
-struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
- int flags, const char *name,
- const struct drm_prop_enum_list *props,
- int num_props,
- uint64_t supported_bits)
-{
- struct drm_property *property;
- int i, ret, index = 0;
- int num_values = hweight64(supported_bits);
-
- flags |= DRM_MODE_PROP_BITMASK;
-
- property = drm_property_create(dev, flags, name, num_values);
- if (!property)
- return NULL;
- for (i = 0; i < num_props; i++) {
- if (!(supported_bits & (1ULL << props[i].type)))
- continue;
-
- if (WARN_ON(index >= num_values)) {
- drm_property_destroy(dev, property);
- return NULL;
- }
-
- ret = drm_property_add_enum(property, index++,
- props[i].type,
- props[i].name);
- if (ret) {
- drm_property_destroy(dev, property);
- return NULL;
- }
- }
-
- return property;
-}
-EXPORT_SYMBOL(drm_property_create_bitmask);
-
-static struct drm_property *property_create_range(struct drm_device *dev,
- int flags, const char *name,
- uint64_t min, uint64_t max)
-{
- struct drm_property *property;
-
- property = drm_property_create(dev, flags, name, 2);
- if (!property)
- return NULL;
-
- property->values[0] = min;
- property->values[1] = max;
-
- return property;
-}
-
-/**
- * drm_property_create_range - create a new unsigned ranged property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @min: minimum value of the property
- * @max: maximum value of the property
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Userspace is allowed to set any unsigned integer value in the (min, max)
- * range inclusive.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
-struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
- const char *name,
- uint64_t min, uint64_t max)
-{
- return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
- name, min, max);
-}
-EXPORT_SYMBOL(drm_property_create_range);
-
-/**
- * drm_property_create_signed_range - create a new signed ranged property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @min: minimum value of the property
- * @max: maximum value of the property
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Userspace is allowed to set any signed integer value in the (min, max)
- * range inclusive.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
-struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
- int flags, const char *name,
- int64_t min, int64_t max)
-{
- return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
- name, I642U64(min), I642U64(max));
-}
-EXPORT_SYMBOL(drm_property_create_signed_range);
-
-/**
- * drm_property_create_object - create a new object property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @type: object type from DRM_MODE_OBJECT_* defines
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Userspace is only allowed to set this to any property value of the given
- * @type. Only useful for atomic properties, which is enforced.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
-struct drm_property *drm_property_create_object(struct drm_device *dev,
- int flags, const char *name, uint32_t type)
-{
- struct drm_property *property;
-
- flags |= DRM_MODE_PROP_OBJECT;
-
- if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
- return NULL;
-
- property = drm_property_create(dev, flags, name, 1);
- if (!property)
- return NULL;
-
- property->values[0] = type;
-
- return property;
-}
-EXPORT_SYMBOL(drm_property_create_object);
-
-/**
- * drm_property_create_bool - create a new boolean property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * This is implemented as a ranged property with only {0, 1} as valid values.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
-struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
- const char *name)
-{
- return drm_property_create_range(dev, flags, name, 0, 1);
-}
-EXPORT_SYMBOL(drm_property_create_bool);
-
-/**
- * drm_property_add_enum - add a possible value to an enumeration property
- * @property: enumeration property to change
- * @index: index of the new enumeration
- * @value: value of the new enumeration
- * @name: symbolic name of the new enumeration
- *
- * This functions adds enumerations to a property.
- *
- * It's use is deprecated, drivers should use one of the more specific helpers
- * to directly create the property with all enumerations already attached.
- *
- * Returns:
- * Zero on success, error code on failure.
- */
-int drm_property_add_enum(struct drm_property *property, int index,
- uint64_t value, const char *name)
-{
- struct drm_property_enum *prop_enum;
-
- if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
- drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
- return -EINVAL;
-
- /*
- * Bitmask enum properties have the additional constraint of values
- * from 0 to 63
- */
- if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
- (value > 63))
- return -EINVAL;
-
- if (!list_empty(&property->enum_list)) {
- list_for_each_entry(prop_enum, &property->enum_list, head) {
- if (prop_enum->value == value) {
- strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
- prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
- return 0;
- }
- }
- }
-
- prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
- if (!prop_enum)
- return -ENOMEM;
-
- strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
- prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
- prop_enum->value = value;
-
- property->values[index] = value;
- list_add_tail(&prop_enum->head, &property->enum_list);
- return 0;
-}
-EXPORT_SYMBOL(drm_property_add_enum);
-
-/**
- * drm_property_destroy - destroy a drm property
- * @dev: drm device
- * @property: property to destry
- *
- * This function frees a property including any attached resources like
- * enumeration values.
- */
-void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
-{
- struct drm_property_enum *prop_enum, *pt;
-
- list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
- list_del(&prop_enum->head);
- kfree(prop_enum);
- }
-
- if (property->num_values)
- kfree(property->values);
- drm_mode_object_unregister(dev, &property->base);
- list_del(&property->head);
- kfree(property);
-}
-EXPORT_SYMBOL(drm_property_destroy);
-
-/**
- * drm_mode_getproperty_ioctl - get the property metadata
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * This function retrieves the metadata for a given property, like the different
- * possible values for an enum property or the limits for a range property.
- *
- * Blob properties are special
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
-int drm_mode_getproperty_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv)
-{
- struct drm_mode_get_property *out_resp = data;
- struct drm_property *property;
- int enum_count = 0;
- int value_count = 0;
- int ret = 0, i;
- int copied;
- struct drm_property_enum *prop_enum;
- struct drm_mode_property_enum __user *enum_ptr;
- uint64_t __user *values_ptr;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- drm_modeset_lock_all(dev);
- property = drm_property_find(dev, out_resp->prop_id);
- if (!property) {
- ret = -ENOENT;
- goto done;
- }
-
- if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
- drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
- list_for_each_entry(prop_enum, &property->enum_list, head)
- enum_count++;
- }
-
- value_count = property->num_values;
-
- strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
- out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
- out_resp->flags = property->flags;
-
- if ((out_resp->count_values >= value_count) && value_count) {
- values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
- for (i = 0; i < value_count; i++) {
- if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
- ret = -EFAULT;
- goto done;
- }
- }
- }
- out_resp->count_values = value_count;
-
- if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
- drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
- if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
- copied = 0;
- enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
- list_for_each_entry(prop_enum, &property->enum_list, head) {
-
- if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
- ret = -EFAULT;
- goto done;
- }
-
- if (copy_to_user(&enum_ptr[copied].name,
- &prop_enum->name, DRM_PROP_NAME_LEN)) {
- ret = -EFAULT;
- goto done;
- }
- copied++;
- }
- }
- out_resp->count_enum_blobs = enum_count;
- }
-
- /*
- * NOTE: The idea seems to have been to use this to read all the blob
- * property values. But nothing ever added them to the corresponding
- * list, userspace always used the special-purpose get_blob ioctl to
- * read the value for a blob property. It also doesn't make a lot of
- * sense to return values here when everything else is just metadata for
- * the property itself.
- */
- if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
- out_resp->count_enum_blobs = 0;
-done:
- drm_modeset_unlock_all(dev);
- return ret;
-}
-
-static void drm_property_free_blob(struct kref *kref)
-{
- struct drm_property_blob *blob =
- container_of(kref, struct drm_property_blob, base.refcount);
-
- mutex_lock(&blob->dev->mode_config.blob_lock);
- list_del(&blob->head_global);
- mutex_unlock(&blob->dev->mode_config.blob_lock);
-
- drm_mode_object_unregister(blob->dev, &blob->base);
-
- kfree(blob);
-}
-
-/**
- * drm_property_create_blob - Create new blob property
- *
- * Creates a new blob property for a specified DRM device, optionally
- * copying data.
- *
- * @dev: DRM device to create property for
- * @length: Length to allocate for blob data
- * @data: If specified, copies data into blob
- *
- * Returns:
- * New blob property with a single reference on success, or an ERR_PTR
- * value on failure.
- */
-struct drm_property_blob *
-drm_property_create_blob(struct drm_device *dev, size_t length,
- const void *data)
-{
- struct drm_property_blob *blob;
- int ret;
-
- if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
- return ERR_PTR(-EINVAL);
-
- blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
- if (!blob)
- return ERR_PTR(-ENOMEM);
-
- /* This must be explicitly initialised, so we can safely call list_del
- * on it in the removal handler, even if it isn't in a file list. */
- INIT_LIST_HEAD(&blob->head_file);
- blob->length = length;
- blob->dev = dev;
-
- if (data)
- memcpy(blob->data, data, length);
-
- ret = drm_mode_object_get_reg(dev, &blob->base, DRM_MODE_OBJECT_BLOB,
- true, drm_property_free_blob);
- if (ret) {
- kfree(blob);
- return ERR_PTR(-EINVAL);
- }
-
- mutex_lock(&dev->mode_config.blob_lock);
- list_add_tail(&blob->head_global,
- &dev->mode_config.property_blob_list);
- mutex_unlock(&dev->mode_config.blob_lock);
-
- return blob;
-}
-EXPORT_SYMBOL(drm_property_create_blob);
-
-/**
- * drm_property_unreference_blob - Unreference a blob property
- *
- * Drop a reference on a blob property. May free the object.
- *
- * @blob: Pointer to blob property
- */
-void drm_property_unreference_blob(struct drm_property_blob *blob)
-{
- if (!blob)
- return;
-
- drm_mode_object_unreference(&blob->base);
-}
-EXPORT_SYMBOL(drm_property_unreference_blob);
-
-/**
- * drm_property_destroy_user_blobs - destroy all blobs created by this client
- * @dev: DRM device
- * @file_priv: destroy all blobs owned by this file handle
- */
-void drm_property_destroy_user_blobs(struct drm_device *dev,
- struct drm_file *file_priv)
-{
- struct drm_property_blob *blob, *bt;
-
- /*
- * When the file gets released that means no one else can access the
- * blob list any more, so no need to grab dev->blob_lock.
- */
- list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
- list_del_init(&blob->head_file);
- drm_property_unreference_blob(blob);
- }
-}
-
-/**
- * drm_property_reference_blob - Take a reference on an existing property
- *
- * Take a new reference on an existing blob property.
- *
- * @blob: Pointer to blob property
- */
-struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
-{
- drm_mode_object_reference(&blob->base);
- return blob;
-}
-EXPORT_SYMBOL(drm_property_reference_blob);
-
-/**
- * drm_property_lookup_blob - look up a blob property and take a reference
- * @dev: drm device
- * @id: id of the blob property
- *
- * If successful, this takes an additional reference to the blob property.
- * callers need to make sure to eventually unreference the returned property
- * again, using @drm_property_unreference_blob.
- */
-struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
- uint32_t id)
-{
- struct drm_mode_object *obj;
- struct drm_property_blob *blob = NULL;
-
- obj = __drm_mode_object_find(dev, id, DRM_MODE_OBJECT_BLOB);
- if (obj)
- blob = obj_to_blob(obj);
- return blob;
-}
-EXPORT_SYMBOL(drm_property_lookup_blob);
-
-/**
- * drm_property_replace_global_blob - atomically replace existing blob property
- * @dev: drm device
- * @replace: location of blob property pointer to be replaced
- * @length: length of data for new blob, or 0 for no data
- * @data: content for new blob, or NULL for no data
- * @obj_holds_id: optional object for property holding blob ID
- * @prop_holds_id: optional property holding blob ID
- * @return 0 on success or error on failure
- *
- * This function will atomically replace a global property in the blob list,
- * optionally updating a property which holds the ID of that property. It is
- * guaranteed to be atomic: no caller will be allowed to see intermediate
- * results, and either the entire operation will succeed and clean up the
- * previous property, or it will fail and the state will be unchanged.
- *
- * If length is 0 or data is NULL, no new blob will be created, and the holding
- * property, if specified, will be set to 0.
- *
- * Access to the replace pointer is assumed to be protected by the caller, e.g.
- * by holding the relevant modesetting object lock for its parent.
- *
- * For example, a drm_connector has a 'PATH' property, which contains the ID
- * of a blob property with the value of the MST path information. Calling this
- * function with replace pointing to the connector's path_blob_ptr, length and
- * data set for the new path information, obj_holds_id set to the connector's
- * base object, and prop_holds_id set to the path property name, will perform
- * a completely atomic update. The access to path_blob_ptr is protected by the
- * caller holding a lock on the connector.
- */
-int drm_property_replace_global_blob(struct drm_device *dev,
- struct drm_property_blob **replace,
- size_t length,
- const void *data,
- struct drm_mode_object *obj_holds_id,
- struct drm_property *prop_holds_id)
-{
- struct drm_property_blob *new_blob = NULL;
- struct drm_property_blob *old_blob = NULL;
- int ret;
-
- WARN_ON(replace == NULL);
-
- old_blob = *replace;
-
- if (length && data) {
- new_blob = drm_property_create_blob(dev, length, data);
- if (IS_ERR(new_blob))
- return PTR_ERR(new_blob);
- }
-
- /* This does not need to be synchronised with blob_lock, as the
- * get_properties ioctl locks all modesetting objects, and
- * obj_holds_id must be locked before calling here, so we cannot
- * have its value out of sync with the list membership modified
- * below under blob_lock. */
- if (obj_holds_id) {
- ret = drm_object_property_set_value(obj_holds_id,
- prop_holds_id,
- new_blob ?
- new_blob->base.id : 0);
- if (ret != 0)
- goto err_created;
- }
-
- drm_property_unreference_blob(old_blob);
- *replace = new_blob;
-
- return 0;
-
-err_created:
- drm_property_unreference_blob(new_blob);
- return ret;
-}
-EXPORT_SYMBOL(drm_property_replace_global_blob);
-
-/**
- * drm_mode_getblob_ioctl - get the contents of a blob property value
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * This function retrieves the contents of a blob property. The value stored in
- * an object's blob property is just a normal modeset object id.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
-int drm_mode_getblob_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv)
-{
- struct drm_mode_get_blob *out_resp = data;
- struct drm_property_blob *blob;
- int ret = 0;
- void __user *blob_ptr;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- blob = drm_property_lookup_blob(dev, out_resp->blob_id);
- if (!blob)
- return -ENOENT;
-
- if (out_resp->length == blob->length) {
- blob_ptr = (void __user *)(unsigned long)out_resp->data;
- if (copy_to_user(blob_ptr, blob->data, blob->length)) {
- ret = -EFAULT;
- goto unref;
- }
- }
- out_resp->length = blob->length;
-unref:
- drm_property_unreference_blob(blob);
-
- return ret;
-}
-
-/**
- * drm_mode_createblob_ioctl - create a new blob property
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * This function creates a new blob property with user-defined values. In order
- * to give us sensible validation and checking when creating, rather than at
- * every potential use, we also require a type to be provided upfront.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
-int drm_mode_createblob_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv)
-{
- struct drm_mode_create_blob *out_resp = data;
- struct drm_property_blob *blob;
- void __user *blob_ptr;
- int ret = 0;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- blob = drm_property_create_blob(dev, out_resp->length, NULL);
- if (IS_ERR(blob))
- return PTR_ERR(blob);
-
- blob_ptr = (void __user *)(unsigned long)out_resp->data;
- if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
- ret = -EFAULT;
- goto out_blob;
- }
-
- /* Dropping the lock between create_blob and our access here is safe
- * as only the same file_priv can remove the blob; at this point, it is
- * not associated with any file_priv. */
- mutex_lock(&dev->mode_config.blob_lock);
- out_resp->blob_id = blob->base.id;
- list_add_tail(&blob->head_file, &file_priv->blobs);
- mutex_unlock(&dev->mode_config.blob_lock);
-
- return 0;
-
-out_blob:
- drm_property_unreference_blob(blob);
- return ret;
-}
-
-/**
- * drm_mode_destroyblob_ioctl - destroy a user blob property
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * Destroy an existing user-defined blob property.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
-int drm_mode_destroyblob_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv)
-{
- struct drm_mode_destroy_blob *out_resp = data;
- struct drm_property_blob *blob = NULL, *bt;
- bool found = false;
- int ret = 0;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- blob = drm_property_lookup_blob(dev, out_resp->blob_id);
- if (!blob)
- return -ENOENT;
-
- mutex_lock(&dev->mode_config.blob_lock);
- /* Ensure the property was actually created by this user. */
- list_for_each_entry(bt, &file_priv->blobs, head_file) {
- if (bt == blob) {
- found = true;
- break;
- }
- }
-
- if (!found) {
- ret = -EPERM;
- goto err;
- }
-
- /* We must drop head_file here, because we may not be the last
- * reference on the blob. */
- list_del_init(&blob->head_file);
- mutex_unlock(&dev->mode_config.blob_lock);
-
- /* One reference from lookup, and one from the filp. */
- drm_property_unreference_blob(blob);
- drm_property_unreference_blob(blob);
-
- return 0;
-
-err:
- mutex_unlock(&dev->mode_config.blob_lock);
- drm_property_unreference_blob(blob);
-
- return ret;
-}
-
-/* Some properties could refer to dynamic refcnt'd objects, or things that
- * need special locking to handle lifetime issues (ie. to ensure the prop
- * value doesn't become invalid part way through the property update due to
- * race). The value returned by reference via 'obj' should be passed back
- * to drm_property_change_valid_put() after the property is set (and the
- * object to which the property is attached has a chance to take it's own
- * reference).
- */
-bool drm_property_change_valid_get(struct drm_property *property,
- uint64_t value, struct drm_mode_object **ref)
-{
- int i;
-
- if (property->flags & DRM_MODE_PROP_IMMUTABLE)
- return false;
-
- *ref = NULL;
-
- if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
- if (value < property->values[0] || value > property->values[1])
- return false;
- return true;
- } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
- int64_t svalue = U642I64(value);
-
- if (svalue < U642I64(property->values[0]) ||
- svalue > U642I64(property->values[1]))
- return false;
- return true;
- } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
- uint64_t valid_mask = 0;
-
- for (i = 0; i < property->num_values; i++)
- valid_mask |= (1ULL << property->values[i]);
- return !(value & ~valid_mask);
- } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
- struct drm_property_blob *blob;
-
- if (value == 0)
- return true;
-
- blob = drm_property_lookup_blob(property->dev, value);
- if (blob) {
- *ref = &blob->base;
- return true;
- } else {
- return false;
- }
- } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
- /* a zero value for an object property translates to null: */
- if (value == 0)
- return true;
-
- *ref = __drm_mode_object_find(property->dev, value,
- property->values[0]);
- return *ref != NULL;
- }
-
- for (i = 0; i < property->num_values; i++)
- if (property->values[i] == value)
- return true;
- return false;
-}
-
-void drm_property_change_valid_put(struct drm_property *property,
- struct drm_mode_object *ref)
-{
- if (!ref)
- return;
-
- if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
- drm_mode_object_unreference(ref);
- } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
- drm_property_unreference_blob(obj_to_blob(ref));
-}
-
int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t value)
diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
index 26ea7b5e3684..131ecfb16d7b 100644
--- a/drivers/gpu/drm/drm_crtc_internal.h
+++ b/drivers/gpu/drm/drm_crtc_internal.h
@@ -36,11 +36,6 @@
int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t value);
-bool drm_property_change_valid_get(struct drm_property *property,
- uint64_t value,
- struct drm_mode_object **ref);
-void drm_property_change_valid_put(struct drm_property *property,
- struct drm_mode_object *ref);
int drm_plane_check_pixel_format(const struct drm_plane *plane,
u32 format);
int drm_crtc_check_viewport(const struct drm_crtc *crtc,
@@ -49,8 +44,6 @@ int drm_crtc_check_viewport(const struct drm_crtc *crtc,
const struct drm_framebuffer *fb);
void drm_fb_release(struct drm_file *file_priv);
-void drm_property_destroy_user_blobs(struct drm_device *dev,
- struct drm_file *file_priv);
/* dumb buffer support IOCTLs */
int drm_mode_create_dumb_ioctl(struct drm_device *dev,
@@ -77,6 +70,24 @@ int drm_mode_cursor_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
int drm_mode_cursor2_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
+int drm_mode_gamma_get_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv);
+int drm_mode_gamma_set_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv);
+
+int drm_mode_page_flip_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv);
+
+/* drm_property.c */
+void drm_property_destroy_user_blobs(struct drm_device *dev,
+ struct drm_file *file_priv);
+bool drm_property_change_valid_get(struct drm_property *property,
+ uint64_t value,
+ struct drm_mode_object **ref);
+void drm_property_change_valid_put(struct drm_property *property,
+ struct drm_mode_object *ref);
+
+/* IOCTL */
int drm_mode_getproperty_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
int drm_mode_getblob_ioctl(struct drm_device *dev,
@@ -85,13 +96,6 @@ int drm_mode_createblob_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
int drm_mode_destroyblob_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
-int drm_mode_gamma_get_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv);
-int drm_mode_gamma_set_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv);
-
-int drm_mode_page_flip_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv);
/* drm_mode_object.c */
int drm_mode_object_get_reg(struct drm_device *dev,
diff --git a/drivers/gpu/drm/drm_property.c b/drivers/gpu/drm/drm_property.c
new file mode 100644
index 000000000000..162cc9032ae5
--- /dev/null
+++ b/drivers/gpu/drm/drm_property.c
@@ -0,0 +1,953 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <linux/export.h>
+#include <drm/drmP.h>
+#include <drm/drm_property.h>
+
+#include "drm_crtc_internal.h"
+
+static bool drm_property_type_valid(struct drm_property *property)
+{
+ if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
+ return !(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
+ return !!(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
+}
+
+/**
+ * drm_property_create - create a new property type
+ * @dev: drm device
+ * @flags: flags specifying the property type
+ * @name: name of the property
+ * @num_values: number of pre-defined values
+ *
+ * This creates a new generic drm property which can then be attached to a drm
+ * object with drm_object_attach_property. The returned property object must be
+ * freed with drm_property_destroy.
+ *
+ * Note that the DRM core keeps a per-device list of properties and that, if
+ * drm_mode_config_cleanup() is called, it will destroy all properties created
+ * by the driver.
+ *
+ * Returns:
+ * A pointer to the newly created property on success, NULL on failure.
+ */
+struct drm_property *drm_property_create(struct drm_device *dev, int flags,
+ const char *name, int num_values)
+{
+ struct drm_property *property = NULL;
+ int ret;
+
+ property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
+ if (!property)
+ return NULL;
+
+ property->dev = dev;
+
+ if (num_values) {
+ property->values = kcalloc(num_values, sizeof(uint64_t),
+ GFP_KERNEL);
+ if (!property->values)
+ goto fail;
+ }
+
+ ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
+ if (ret)
+ goto fail;
+
+ property->flags = flags;
+ property->num_values = num_values;
+ INIT_LIST_HEAD(&property->enum_list);
+
+ if (name) {
+ strncpy(property->name, name, DRM_PROP_NAME_LEN);
+ property->name[DRM_PROP_NAME_LEN-1] = '\0';
+ }
+
+ list_add_tail(&property->head, &dev->mode_config.property_list);
+
+ WARN_ON(!drm_property_type_valid(property));
+
+ return property;
+fail:
+ kfree(property->values);
+ kfree(property);
+ return NULL;
+}
+EXPORT_SYMBOL(drm_property_create);
+
+/**
+ * drm_property_create_enum - create a new enumeration property type
+ * @dev: drm device
+ * @flags: flags specifying the property type
+ * @name: name of the property
+ * @props: enumeration lists with property values
+ * @num_values: number of pre-defined values
+ *
+ * This creates a new generic drm property which can then be attached to a drm
+ * object with drm_object_attach_property. The returned property object must be
+ * freed with drm_property_destroy.
+ *
+ * Userspace is only allowed to set one of the predefined values for enumeration
+ * properties.
+ *
+ * Returns:
+ * A pointer to the newly created property on success, NULL on failure.
+ */
+struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
+ const char *name,
+ const struct drm_prop_enum_list *props,
+ int num_values)
+{
+ struct drm_property *property;
+ int i, ret;
+
+ flags |= DRM_MODE_PROP_ENUM;
+
+ property = drm_property_create(dev, flags, name, num_values);
+ if (!property)
+ return NULL;
+
+ for (i = 0; i < num_values; i++) {
+ ret = drm_property_add_enum(property, i,
+ props[i].type,
+ props[i].name);
+ if (ret) {
+ drm_property_destroy(dev, property);
+ return NULL;
+ }
+ }
+
+ return property;
+}
+EXPORT_SYMBOL(drm_property_create_enum);
+
+/**
+ * drm_property_create_bitmask - create a new bitmask property type
+ * @dev: drm device
+ * @flags: flags specifying the property type
+ * @name: name of the property
+ * @props: enumeration lists with property bitflags
+ * @num_props: size of the @props array
+ * @supported_bits: bitmask of all supported enumeration values
+ *
+ * This creates a new bitmask drm property which can then be attached to a drm
+ * object with drm_object_attach_property. The returned property object must be
+ * freed with drm_property_destroy.
+ *
+ * Compared to plain enumeration properties userspace is allowed to set any
+ * or'ed together combination of the predefined property bitflag values
+ *
+ * Returns:
+ * A pointer to the newly created property on success, NULL on failure.
+ */
+struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
+ int flags, const char *name,
+ const struct drm_prop_enum_list *props,
+ int num_props,
+ uint64_t supported_bits)
+{
+ struct drm_property *property;
+ int i, ret, index = 0;
+ int num_values = hweight64(supported_bits);
+
+ flags |= DRM_MODE_PROP_BITMASK;
+
+ property = drm_property_create(dev, flags, name, num_values);
+ if (!property)
+ return NULL;
+ for (i = 0; i < num_props; i++) {
+ if (!(supported_bits & (1ULL << props[i].type)))
+ continue;
+
+ if (WARN_ON(index >= num_values)) {
+ drm_property_destroy(dev, property);
+ return NULL;
+ }
+
+ ret = drm_property_add_enum(property, index++,
+ props[i].type,
+ props[i].name);
+ if (ret) {
+ drm_property_destroy(dev, property);
+ return NULL;
+ }
+ }
+
+ return property;
+}
+EXPORT_SYMBOL(drm_property_create_bitmask);
+
+static struct drm_property *property_create_range(struct drm_device *dev,
+ int flags, const char *name,
+ uint64_t min, uint64_t max)
+{
+ struct drm_property *property;
+
+ property = drm_property_create(dev, flags, name, 2);
+ if (!property)
+ return NULL;
+
+ property->values[0] = min;
+ property->values[1] = max;
+
+ return property;
+}
+
+/**
+ * drm_property_create_range - create a new unsigned ranged property type
+ * @dev: drm device
+ * @flags: flags specifying the property type
+ * @name: name of the property
+ * @min: minimum value of the property
+ * @max: maximum value of the property
+ *
+ * This creates a new generic drm property which can then be attached to a drm
+ * object with drm_object_attach_property. The returned property object must be
+ * freed with drm_property_destroy.
+ *
+ * Userspace is allowed to set any unsigned integer value in the (min, max)
+ * range inclusive.
+ *
+ * Returns:
+ * A pointer to the newly created property on success, NULL on failure.
+ */
+struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
+ const char *name,
+ uint64_t min, uint64_t max)
+{
+ return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
+ name, min, max);
+}
+EXPORT_SYMBOL(drm_property_create_range);
+
+/**
+ * drm_property_create_signed_range - create a new signed ranged property type
+ * @dev: drm device
+ * @flags: flags specifying the property type
+ * @name: name of the property
+ * @min: minimum value of the property
+ * @max: maximum value of the property
+ *
+ * This creates a new generic drm property which can then be attached to a drm
+ * object with drm_object_attach_property. The returned property object must be
+ * freed with drm_property_destroy.
+ *
+ * Userspace is allowed to set any signed integer value in the (min, max)
+ * range inclusive.
+ *
+ * Returns:
+ * A pointer to the newly created property on success, NULL on failure.
+ */
+struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
+ int flags, const char *name,
+ int64_t min, int64_t max)
+{
+ return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
+ name, I642U64(min), I642U64(max));
+}
+EXPORT_SYMBOL(drm_property_create_signed_range);
+
+/**
+ * drm_property_create_object - create a new object property type
+ * @dev: drm device
+ * @flags: flags specifying the property type
+ * @name: name of the property
+ * @type: object type from DRM_MODE_OBJECT_* defines
+ *
+ * This creates a new generic drm property which can then be attached to a drm
+ * object with drm_object_attach_property. The returned property object must be
+ * freed with drm_property_destroy.
+ *
+ * Userspace is only allowed to set this to any property value of the given
+ * @type. Only useful for atomic properties, which is enforced.
+ *
+ * Returns:
+ * A pointer to the newly created property on success, NULL on failure.
+ */
+struct drm_property *drm_property_create_object(struct drm_device *dev,
+ int flags, const char *name, uint32_t type)
+{
+ struct drm_property *property;
+
+ flags |= DRM_MODE_PROP_OBJECT;
+
+ if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
+ return NULL;
+
+ property = drm_property_create(dev, flags, name, 1);
+ if (!property)
+ return NULL;
+
+ property->values[0] = type;
+
+ return property;
+}
+EXPORT_SYMBOL(drm_property_create_object);
+
+/**
+ * drm_property_create_bool - create a new boolean property type
+ * @dev: drm device
+ * @flags: flags specifying the property type
+ * @name: name of the property
+ *
+ * This creates a new generic drm property which can then be attached to a drm
+ * object with drm_object_attach_property. The returned property object must be
+ * freed with drm_property_destroy.
+ *
+ * This is implemented as a ranged property with only {0, 1} as valid values.
+ *
+ * Returns:
+ * A pointer to the newly created property on success, NULL on failure.
+ */
+struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
+ const char *name)
+{
+ return drm_property_create_range(dev, flags, name, 0, 1);
+}
+EXPORT_SYMBOL(drm_property_create_bool);
+
+/**
+ * drm_property_add_enum - add a possible value to an enumeration property
+ * @property: enumeration property to change
+ * @index: index of the new enumeration
+ * @value: value of the new enumeration
+ * @name: symbolic name of the new enumeration
+ *
+ * This functions adds enumerations to a property.
+ *
+ * It's use is deprecated, drivers should use one of the more specific helpers
+ * to directly create the property with all enumerations already attached.
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int drm_property_add_enum(struct drm_property *property, int index,
+ uint64_t value, const char *name)
+{
+ struct drm_property_enum *prop_enum;
+
+ if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
+ drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
+ return -EINVAL;
+
+ /*
+ * Bitmask enum properties have the additional constraint of values
+ * from 0 to 63
+ */
+ if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
+ (value > 63))
+ return -EINVAL;
+
+ if (!list_empty(&property->enum_list)) {
+ list_for_each_entry(prop_enum, &property->enum_list, head) {
+ if (prop_enum->value == value) {
+ strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
+ prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
+ return 0;
+ }
+ }
+ }
+
+ prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
+ if (!prop_enum)
+ return -ENOMEM;
+
+ strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
+ prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
+ prop_enum->value = value;
+
+ property->values[index] = value;
+ list_add_tail(&prop_enum->head, &property->enum_list);
+ return 0;
+}
+EXPORT_SYMBOL(drm_property_add_enum);
+
+/**
+ * drm_property_destroy - destroy a drm property
+ * @dev: drm device
+ * @property: property to destry
+ *
+ * This function frees a property including any attached resources like
+ * enumeration values.
+ */
+void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
+{
+ struct drm_property_enum *prop_enum, *pt;
+
+ list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
+ list_del(&prop_enum->head);
+ kfree(prop_enum);
+ }
+
+ if (property->num_values)
+ kfree(property->values);
+ drm_mode_object_unregister(dev, &property->base);
+ list_del(&property->head);
+ kfree(property);
+}
+EXPORT_SYMBOL(drm_property_destroy);
+
+/**
+ * drm_mode_getproperty_ioctl - get the property metadata
+ * @dev: DRM device
+ * @data: ioctl data
+ * @file_priv: DRM file info
+ *
+ * This function retrieves the metadata for a given property, like the different
+ * possible values for an enum property or the limits for a range property.
+ *
+ * Blob properties are special
+ *
+ * Called by the user via ioctl.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_mode_getproperty_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv)
+{
+ struct drm_mode_get_property *out_resp = data;
+ struct drm_property *property;
+ int enum_count = 0;
+ int value_count = 0;
+ int ret = 0, i;
+ int copied;
+ struct drm_property_enum *prop_enum;
+ struct drm_mode_property_enum __user *enum_ptr;
+ uint64_t __user *values_ptr;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ drm_modeset_lock_all(dev);
+ property = drm_property_find(dev, out_resp->prop_id);
+ if (!property) {
+ ret = -ENOENT;
+ goto done;
+ }
+
+ if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
+ drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
+ list_for_each_entry(prop_enum, &property->enum_list, head)
+ enum_count++;
+ }
+
+ value_count = property->num_values;
+
+ strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
+ out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
+ out_resp->flags = property->flags;
+
+ if ((out_resp->count_values >= value_count) && value_count) {
+ values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
+ for (i = 0; i < value_count; i++) {
+ if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
+ ret = -EFAULT;
+ goto done;
+ }
+ }
+ }
+ out_resp->count_values = value_count;
+
+ if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
+ drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
+ if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
+ copied = 0;
+ enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
+ list_for_each_entry(prop_enum, &property->enum_list, head) {
+
+ if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
+ ret = -EFAULT;
+ goto done;
+ }
+
+ if (copy_to_user(&enum_ptr[copied].name,
+ &prop_enum->name, DRM_PROP_NAME_LEN)) {
+ ret = -EFAULT;
+ goto done;
+ }
+ copied++;
+ }
+ }
+ out_resp->count_enum_blobs = enum_count;
+ }
+
+ /*
+ * NOTE: The idea seems to have been to use this to read all the blob
+ * property values. But nothing ever added them to the corresponding
+ * list, userspace always used the special-purpose get_blob ioctl to
+ * read the value for a blob property. It also doesn't make a lot of
+ * sense to return values here when everything else is just metadata for
+ * the property itself.
+ */
+ if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
+ out_resp->count_enum_blobs = 0;
+done:
+ drm_modeset_unlock_all(dev);
+ return ret;
+}
+
+static void drm_property_free_blob(struct kref *kref)
+{
+ struct drm_property_blob *blob =
+ container_of(kref, struct drm_property_blob, base.refcount);
+
+ mutex_lock(&blob->dev->mode_config.blob_lock);
+ list_del(&blob->head_global);
+ mutex_unlock(&blob->dev->mode_config.blob_lock);
+
+ drm_mode_object_unregister(blob->dev, &blob->base);
+
+ kfree(blob);
+}
+
+/**
+ * drm_property_create_blob - Create new blob property
+ *
+ * Creates a new blob property for a specified DRM device, optionally
+ * copying data.
+ *
+ * @dev: DRM device to create property for
+ * @length: Length to allocate for blob data
+ * @data: If specified, copies data into blob
+ *
+ * Returns:
+ * New blob property with a single reference on success, or an ERR_PTR
+ * value on failure.
+ */
+struct drm_property_blob *
+drm_property_create_blob(struct drm_device *dev, size_t length,
+ const void *data)
+{
+ struct drm_property_blob *blob;
+ int ret;
+
+ if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
+ return ERR_PTR(-EINVAL);
+
+ blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
+ if (!blob)
+ return ERR_PTR(-ENOMEM);
+
+ /* This must be explicitly initialised, so we can safely call list_del
+ * on it in the removal handler, even if it isn't in a file list. */
+ INIT_LIST_HEAD(&blob->head_file);
+ blob->length = length;
+ blob->dev = dev;
+
+ if (data)
+ memcpy(blob->data, data, length);
+
+ ret = drm_mode_object_get_reg(dev, &blob->base, DRM_MODE_OBJECT_BLOB,
+ true, drm_property_free_blob);
+ if (ret) {
+ kfree(blob);
+ return ERR_PTR(-EINVAL);
+ }
+
+ mutex_lock(&dev->mode_config.blob_lock);
+ list_add_tail(&blob->head_global,
+ &dev->mode_config.property_blob_list);
+ mutex_unlock(&dev->mode_config.blob_lock);
+
+ return blob;
+}
+EXPORT_SYMBOL(drm_property_create_blob);
+
+/**
+ * drm_property_unreference_blob - Unreference a blob property
+ *
+ * Drop a reference on a blob property. May free the object.
+ *
+ * @blob: Pointer to blob property
+ */
+void drm_property_unreference_blob(struct drm_property_blob *blob)
+{
+ if (!blob)
+ return;
+
+ drm_mode_object_unreference(&blob->base);
+}
+EXPORT_SYMBOL(drm_property_unreference_blob);
+
+/**
+ * drm_property_destroy_user_blobs - destroy all blobs created by this client
+ * @dev: DRM device
+ * @file_priv: destroy all blobs owned by this file handle
+ */
+void drm_property_destroy_user_blobs(struct drm_device *dev,
+ struct drm_file *file_priv)
+{
+ struct drm_property_blob *blob, *bt;
+
+ /*
+ * When the file gets released that means no one else can access the
+ * blob list any more, so no need to grab dev->blob_lock.
+ */
+ list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
+ list_del_init(&blob->head_file);
+ drm_property_unreference_blob(blob);
+ }
+}
+
+/**
+ * drm_property_reference_blob - Take a reference on an existing property
+ *
+ * Take a new reference on an existing blob property.
+ *
+ * @blob: Pointer to blob property
+ */
+struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
+{
+ drm_mode_object_reference(&blob->base);
+ return blob;
+}
+EXPORT_SYMBOL(drm_property_reference_blob);
+
+/**
+ * drm_property_lookup_blob - look up a blob property and take a reference
+ * @dev: drm device
+ * @id: id of the blob property
+ *
+ * If successful, this takes an additional reference to the blob property.
+ * callers need to make sure to eventually unreference the returned property
+ * again, using @drm_property_unreference_blob.
+ */
+struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
+ uint32_t id)
+{
+ struct drm_mode_object *obj;
+ struct drm_property_blob *blob = NULL;
+
+ obj = __drm_mode_object_find(dev, id, DRM_MODE_OBJECT_BLOB);
+ if (obj)
+ blob = obj_to_blob(obj);
+ return blob;
+}
+EXPORT_SYMBOL(drm_property_lookup_blob);
+
+/**
+ * drm_property_replace_global_blob - atomically replace existing blob property
+ * @dev: drm device
+ * @replace: location of blob property pointer to be replaced
+ * @length: length of data for new blob, or 0 for no data
+ * @data: content for new blob, or NULL for no data
+ * @obj_holds_id: optional object for property holding blob ID
+ * @prop_holds_id: optional property holding blob ID
+ * @return 0 on success or error on failure
+ *
+ * This function will atomically replace a global property in the blob list,
+ * optionally updating a property which holds the ID of that property. It is
+ * guaranteed to be atomic: no caller will be allowed to see intermediate
+ * results, and either the entire operation will succeed and clean up the
+ * previous property, or it will fail and the state will be unchanged.
+ *
+ * If length is 0 or data is NULL, no new blob will be created, and the holding
+ * property, if specified, will be set to 0.
+ *
+ * Access to the replace pointer is assumed to be protected by the caller, e.g.
+ * by holding the relevant modesetting object lock for its parent.
+ *
+ * For example, a drm_connector has a 'PATH' property, which contains the ID
+ * of a blob property with the value of the MST path information. Calling this
+ * function with replace pointing to the connector's path_blob_ptr, length and
+ * data set for the new path information, obj_holds_id set to the connector's
+ * base object, and prop_holds_id set to the path property name, will perform
+ * a completely atomic update. The access to path_blob_ptr is protected by the
+ * caller holding a lock on the connector.
+ */
+int drm_property_replace_global_blob(struct drm_device *dev,
+ struct drm_property_blob **replace,
+ size_t length,
+ const void *data,
+ struct drm_mode_object *obj_holds_id,
+ struct drm_property *prop_holds_id)
+{
+ struct drm_property_blob *new_blob = NULL;
+ struct drm_property_blob *old_blob = NULL;
+ int ret;
+
+ WARN_ON(replace == NULL);
+
+ old_blob = *replace;
+
+ if (length && data) {
+ new_blob = drm_property_create_blob(dev, length, data);
+ if (IS_ERR(new_blob))
+ return PTR_ERR(new_blob);
+ }
+
+ /* This does not need to be synchronised with blob_lock, as the
+ * get_properties ioctl locks all modesetting objects, and
+ * obj_holds_id must be locked before calling here, so we cannot
+ * have its value out of sync with the list membership modified
+ * below under blob_lock. */
+ if (obj_holds_id) {
+ ret = drm_object_property_set_value(obj_holds_id,
+ prop_holds_id,
+ new_blob ?
+ new_blob->base.id : 0);
+ if (ret != 0)
+ goto err_created;
+ }
+
+ drm_property_unreference_blob(old_blob);
+ *replace = new_blob;
+
+ return 0;
+
+err_created:
+ drm_property_unreference_blob(new_blob);
+ return ret;
+}
+EXPORT_SYMBOL(drm_property_replace_global_blob);
+
+/**
+ * drm_mode_getblob_ioctl - get the contents of a blob property value
+ * @dev: DRM device
+ * @data: ioctl data
+ * @file_priv: DRM file info
+ *
+ * This function retrieves the contents of a blob property. The value stored in
+ * an object's blob property is just a normal modeset object id.
+ *
+ * Called by the user via ioctl.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_mode_getblob_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv)
+{
+ struct drm_mode_get_blob *out_resp = data;
+ struct drm_property_blob *blob;
+ int ret = 0;
+ void __user *blob_ptr;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ blob = drm_property_lookup_blob(dev, out_resp->blob_id);
+ if (!blob)
+ return -ENOENT;
+
+ if (out_resp->length == blob->length) {
+ blob_ptr = (void __user *)(unsigned long)out_resp->data;
+ if (copy_to_user(blob_ptr, blob->data, blob->length)) {
+ ret = -EFAULT;
+ goto unref;
+ }
+ }
+ out_resp->length = blob->length;
+unref:
+ drm_property_unreference_blob(blob);
+
+ return ret;
+}
+
+/**
+ * drm_mode_createblob_ioctl - create a new blob property
+ * @dev: DRM device
+ * @data: ioctl data
+ * @file_priv: DRM file info
+ *
+ * This function creates a new blob property with user-defined values. In order
+ * to give us sensible validation and checking when creating, rather than at
+ * every potential use, we also require a type to be provided upfront.
+ *
+ * Called by the user via ioctl.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_mode_createblob_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv)
+{
+ struct drm_mode_create_blob *out_resp = data;
+ struct drm_property_blob *blob;
+ void __user *blob_ptr;
+ int ret = 0;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ blob = drm_property_create_blob(dev, out_resp->length, NULL);
+ if (IS_ERR(blob))
+ return PTR_ERR(blob);
+
+ blob_ptr = (void __user *)(unsigned long)out_resp->data;
+ if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
+ ret = -EFAULT;
+ goto out_blob;
+ }
+
+ /* Dropping the lock between create_blob and our access here is safe
+ * as only the same file_priv can remove the blob; at this point, it is
+ * not associated with any file_priv. */
+ mutex_lock(&dev->mode_config.blob_lock);
+ out_resp->blob_id = blob->base.id;
+ list_add_tail(&blob->head_file, &file_priv->blobs);
+ mutex_unlock(&dev->mode_config.blob_lock);
+
+ return 0;
+
+out_blob:
+ drm_property_unreference_blob(blob);
+ return ret;
+}
+
+/**
+ * drm_mode_destroyblob_ioctl - destroy a user blob property
+ * @dev: DRM device
+ * @data: ioctl data
+ * @file_priv: DRM file info
+ *
+ * Destroy an existing user-defined blob property.
+ *
+ * Called by the user via ioctl.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_mode_destroyblob_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv)
+{
+ struct drm_mode_destroy_blob *out_resp = data;
+ struct drm_property_blob *blob = NULL, *bt;
+ bool found = false;
+ int ret = 0;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ blob = drm_property_lookup_blob(dev, out_resp->blob_id);
+ if (!blob)
+ return -ENOENT;
+
+ mutex_lock(&dev->mode_config.blob_lock);
+ /* Ensure the property was actually created by this user. */
+ list_for_each_entry(bt, &file_priv->blobs, head_file) {
+ if (bt == blob) {
+ found = true;
+ break;
+ }
+ }
+
+ if (!found) {
+ ret = -EPERM;
+ goto err;
+ }
+
+ /* We must drop head_file here, because we may not be the last
+ * reference on the blob. */
+ list_del_init(&blob->head_file);
+ mutex_unlock(&dev->mode_config.blob_lock);
+
+ /* One reference from lookup, and one from the filp. */
+ drm_property_unreference_blob(blob);
+ drm_property_unreference_blob(blob);
+
+ return 0;
+
+err:
+ mutex_unlock(&dev->mode_config.blob_lock);
+ drm_property_unreference_blob(blob);
+
+ return ret;
+}
+
+/* Some properties could refer to dynamic refcnt'd objects, or things that
+ * need special locking to handle lifetime issues (ie. to ensure the prop
+ * value doesn't become invalid part way through the property update due to
+ * race). The value returned by reference via 'obj' should be passed back
+ * to drm_property_change_valid_put() after the property is set (and the
+ * object to which the property is attached has a chance to take it's own
+ * reference).
+ */
+bool drm_property_change_valid_get(struct drm_property *property,
+ uint64_t value, struct drm_mode_object **ref)
+{
+ int i;
+
+ if (property->flags & DRM_MODE_PROP_IMMUTABLE)
+ return false;
+
+ *ref = NULL;
+
+ if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
+ if (value < property->values[0] || value > property->values[1])
+ return false;
+ return true;
+ } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
+ int64_t svalue = U642I64(value);
+
+ if (svalue < U642I64(property->values[0]) ||
+ svalue > U642I64(property->values[1]))
+ return false;
+ return true;
+ } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
+ uint64_t valid_mask = 0;
+
+ for (i = 0; i < property->num_values; i++)
+ valid_mask |= (1ULL << property->values[i]);
+ return !(value & ~valid_mask);
+ } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
+ struct drm_property_blob *blob;
+
+ if (value == 0)
+ return true;
+
+ blob = drm_property_lookup_blob(property->dev, value);
+ if (blob) {
+ *ref = &blob->base;
+ return true;
+ } else {
+ return false;
+ }
+ } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
+ /* a zero value for an object property translates to null: */
+ if (value == 0)
+ return true;
+
+ *ref = __drm_mode_object_find(property->dev, value,
+ property->values[0]);
+ return *ref != NULL;
+ }
+
+ for (i = 0; i < property->num_values; i++)
+ if (property->values[i] == value)
+ return true;
+ return false;
+}
+
+void drm_property_change_valid_put(struct drm_property *property,
+ struct drm_mode_object *ref)
+{
+ if (!ref)
+ return;
+
+ if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
+ drm_mode_object_unreference(ref);
+ } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
+ drm_property_unreference_blob(obj_to_blob(ref));
+}
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 0c3fa89afd11..4880606e2ffd 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -41,6 +41,7 @@
#include <drm/drm_modes.h>
#include <drm/drm_connector.h>
#include <drm/drm_encoder.h>
+#include <drm/drm_property.h>
struct drm_device;
struct drm_mode_set;
@@ -82,33 +83,6 @@ struct drm_tile_group {
u8 group_data[8];
};
-struct drm_property_blob {
- struct drm_mode_object base;
- struct drm_device *dev;
- struct list_head head_global;
- struct list_head head_file;
- size_t length;
- unsigned char data[];
-};
-
-struct drm_property_enum {
- uint64_t value;
- struct list_head head;
- char name[DRM_PROP_NAME_LEN];
-};
-
-struct drm_property {
- struct list_head head;
- struct drm_mode_object base;
- uint32_t flags;
- char name[DRM_PROP_NAME_LEN];
- uint32_t num_values;
- uint64_t *values;
- struct drm_device *dev;
-
- struct list_head enum_list;
-};
-
struct drm_crtc;
struct drm_encoder;
struct drm_pending_vblank_event;
@@ -2032,15 +2006,9 @@ struct drm_mode_config {
#define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
#define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
#define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
-#define obj_to_property(x) container_of(x, struct drm_property, base)
#define obj_to_blob(x) container_of(x, struct drm_property_blob, base)
#define obj_to_plane(x) container_of(x, struct drm_plane, base)
-struct drm_prop_enum_list {
- int type;
- char *name;
-};
-
extern __printf(6, 7)
int drm_crtc_init_with_planes(struct drm_device *dev,
struct drm_crtc *crtc,
@@ -2113,52 +2081,6 @@ extern void drm_mode_config_init(struct drm_device *dev);
extern void drm_mode_config_reset(struct drm_device *dev);
extern void drm_mode_config_cleanup(struct drm_device *dev);
-static inline bool drm_property_type_is(struct drm_property *property,
- uint32_t type)
-{
- /* instanceof for props.. handles extended type vs original types: */
- if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
- return (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) == type;
- return property->flags & type;
-}
-
-extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
- const char *name, int num_values);
-extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
- const char *name,
- const struct drm_prop_enum_list *props,
- int num_values);
-struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
- int flags, const char *name,
- const struct drm_prop_enum_list *props,
- int num_props,
- uint64_t supported_bits);
-struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
- const char *name,
- uint64_t min, uint64_t max);
-struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
- int flags, const char *name,
- int64_t min, int64_t max);
-struct drm_property *drm_property_create_object(struct drm_device *dev,
- int flags, const char *name, uint32_t type);
-struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
- const char *name);
-struct drm_property_blob *drm_property_create_blob(struct drm_device *dev,
- size_t length,
- const void *data);
-struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
- uint32_t id);
-int drm_property_replace_global_blob(struct drm_device *dev,
- struct drm_property_blob **replace,
- size_t length,
- const void *data,
- struct drm_mode_object *obj_holds_id,
- struct drm_property *prop_holds_id);
-struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob);
-void drm_property_unreference_blob(struct drm_property_blob *blob);
-extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
-extern int drm_property_add_enum(struct drm_property *property, int index,
- uint64_t value, const char *name);
extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
int gamma_size);
@@ -2208,14 +2130,6 @@ static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,
return mo ? obj_to_crtc(mo) : NULL;
}
-static inline struct drm_property *drm_property_find(struct drm_device *dev,
- uint32_t id)
-{
- struct drm_mode_object *mo;
- mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PROPERTY);
- return mo ? obj_to_property(mo) : NULL;
-}
-
/*
* Extract a degamma/gamma LUT value provided by user and round it to the
* precision supported by the hardware.
diff --git a/include/drm/drm_property.h b/include/drm/drm_property.h
new file mode 100644
index 000000000000..ac40069358c7
--- /dev/null
+++ b/include/drm/drm_property.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef __DRM_PROPERTY_H__
+#define __DRM_PROPERTY_H__
+
+#include <linux/list.h>
+#include <linux/ctype.h>
+#include <drm/drm_mode_object.h>
+
+struct drm_property_blob {
+ struct drm_mode_object base;
+ struct drm_device *dev;
+ struct list_head head_global;
+ struct list_head head_file;
+ size_t length;
+ unsigned char data[];
+};
+
+struct drm_property_enum {
+ uint64_t value;
+ struct list_head head;
+ char name[DRM_PROP_NAME_LEN];
+};
+
+struct drm_property {
+ struct list_head head;
+ struct drm_mode_object base;
+ uint32_t flags;
+ char name[DRM_PROP_NAME_LEN];
+ uint32_t num_values;
+ uint64_t *values;
+ struct drm_device *dev;
+
+ struct list_head enum_list;
+};
+
+struct drm_prop_enum_list {
+ int type;
+ char *name;
+};
+
+#define obj_to_property(x) container_of(x, struct drm_property, base)
+
+static inline bool drm_property_type_is(struct drm_property *property,
+ uint32_t type)
+{
+ /* instanceof for props.. handles extended type vs original types: */
+ if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
+ return (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) == type;
+ return property->flags & type;
+}
+
+struct drm_property *drm_property_create(struct drm_device *dev, int flags,
+ const char *name, int num_values);
+struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
+ const char *name,
+ const struct drm_prop_enum_list *props,
+ int num_values);
+struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
+ int flags, const char *name,
+ const struct drm_prop_enum_list *props,
+ int num_props,
+ uint64_t supported_bits);
+struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
+ const char *name,
+ uint64_t min, uint64_t max);
+struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
+ int flags, const char *name,
+ int64_t min, int64_t max);
+struct drm_property *drm_property_create_object(struct drm_device *dev,
+ int flags, const char *name, uint32_t type);
+struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
+ const char *name);
+int drm_property_add_enum(struct drm_property *property, int index,
+ uint64_t value, const char *name);
+void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
+
+struct drm_property_blob *drm_property_create_blob(struct drm_device *dev,
+ size_t length,
+ const void *data);
+struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
+ uint32_t id);
+int drm_property_replace_global_blob(struct drm_device *dev,
+ struct drm_property_blob **replace,
+ size_t length,
+ const void *data,
+ struct drm_mode_object *obj_holds_id,
+ struct drm_property *prop_holds_id);
+struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob);
+void drm_property_unreference_blob(struct drm_property_blob *blob);
+
+static inline struct drm_property *drm_property_find(struct drm_device *dev,
+ uint32_t id)
+{
+ struct drm_mode_object *mo;
+ mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PROPERTY);
+ return mo ? obj_to_property(mo) : NULL;
+}
+
+#endif
--
2.9.3
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^ permalink raw reply related [flat|nested] 24+ messages in thread
end of thread, other threads:[~2016-08-29 8:28 UTC | newest]
Thread overview: 24+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-08-17 20:55 [PATCH 1/9] drm: Extract drm_encoder.[hc] Daniel Vetter
2016-08-17 20:55 ` [PATCH 2/9] drm/doc: Polish kerneldoc for encoders Daniel Vetter
2016-08-25 12:24 ` Archit Taneja
2016-08-17 20:56 ` [PATCH 3/9] drm: Extract drm_mode_object.[hc] Daniel Vetter
2016-08-25 12:25 ` Archit Taneja
2016-08-25 19:40 ` Daniel Vetter
2016-08-26 3:16 ` Archit Taneja
2016-08-17 20:56 ` [PATCH 4/9] drm: Remove drm_mode_object->atomic_count Daniel Vetter
2016-08-25 12:25 ` Archit Taneja
2016-08-17 20:56 ` [PATCH 5/9] drm/doc: Polish docs for drm_mode_object Daniel Vetter
2016-08-25 12:25 ` Archit Taneja
2016-08-17 20:56 ` [PATCH 6/9] drm: move drm_mode_legacy_fb_format to drm_fourcc.c Daniel Vetter
2016-08-25 12:25 ` Archit Taneja
2016-08-17 20:56 ` [PATCH 7/9] drm: Extract drm_property.[hc] Daniel Vetter
2016-08-18 11:11 ` Emil Velikov
2016-08-18 13:11 ` Daniel Vetter
2016-08-25 12:25 ` Archit Taneja
2016-08-17 20:56 ` [PATCH 8/9] drm: Unify handling of blob and object properties Daniel Vetter
2016-08-25 12:26 ` Archit Taneja
2016-08-17 20:56 ` [PATCH 9/9] drm/doc: Polish docs for drm_property&drm_property_blob Daniel Vetter
2016-08-18 7:39 ` ✗ Ro.CI.BAT: failure for series starting with [1/9] drm: Extract drm_encoder.[hc] Patchwork
2016-08-25 12:23 ` [PATCH 1/9] " Archit Taneja
2016-08-25 19:38 ` Daniel Vetter
2016-08-29 8:27 Daniel Vetter
2016-08-29 8:27 ` [PATCH 7/9] drm: Extract drm_property.[hc] Daniel Vetter
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