From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752277AbdAYVfh (ORCPT ); Wed, 25 Jan 2017 16:35:37 -0500 Received: from mail-lf0-f54.google.com ([209.85.215.54]:36132 "EHLO mail-lf0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752123AbdAYVff (ORCPT ); Wed, 25 Jan 2017 16:35:35 -0500 From: Sergei Shtylyov To: laurent.pinchart@ideasonboard.com, airlied@linux.ie, dri-devel@lists.freedesktop.org, daniel.vetter@intel.com, jani.nikula@linux.intel.com, seanpaul@chromium.org Cc: linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 1/3] drm: Add live source object Date: Thu, 26 Jan 2017 00:35:30 +0300 Message-ID: <2140645.srHrqXCQUP@wasted.cogentembedded.com> Organization: Cogent Embedded Inc. User-Agent: KMail/4.14.10 (Linux/4.8.13-100.fc23.x86_64; KDE/4.14.20; x86_64; ; ) In-Reply-To: <1542778.dcWpka5Jpx@wasted.cogentembedded.com> References: <1542778.dcWpka5Jpx@wasted.cogentembedded.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Laurent Pinchart Live sources represent a hardware connection between a video stream source and a CRTC, going through a plane. The kernel API lets driver register live sources, and the userspace API lets applications enumerate them. [Sergei: ported to the modern kernel.] Signed-off-by: Laurent Pinchart Signed-off-by: Sergei Shtylyov --- Changes in version 3: - moved drm_live_source_{init|cleanup}() from drm_crtc.c to drm_plane.c and their prototypes from to (along with *struct* drm_live_source[_funcs]); - moved drm_mode_getsource[_res]() prototypes from to drm_crtc_internal.h; - updated the ioctl() numbers; - generally followed the upstream source code moves; - added my signoff. drivers/gpu/drm/drm_crtc.c | 93 ++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/drm_crtc_internal.h | 4 + drivers/gpu/drm/drm_ioctl.c | 2 drivers/gpu/drm/drm_mode_config.c | 7 ++ drivers/gpu/drm/drm_plane.c | 62 ++++++++++++++++++++++++ include/drm/drm_mode_config.h | 2 include/drm/drm_plane.h | 29 +++++++++++ include/uapi/drm/drm.h | 3 + include/uapi/drm/drm_mode.h | 17 ++++++ 9 files changed, 219 insertions(+) Index: linux/drivers/gpu/drm/drm_crtc.c =================================================================== --- linux.orig/drivers/gpu/drm/drm_crtc.c +++ linux/drivers/gpu/drm/drm_crtc.c @@ -415,6 +415,99 @@ int drm_mode_getcrtc(struct drm_device * } /** + * drm_mode_getsource_res - get live source info + * @dev: DRM device + * @data: ioctl data + * @file_priv: DRM file info + * + * Return a live source and set of IDs. + */ +int drm_mode_getsource_res(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_mode_get_live_source_res *src_resp = data; + struct drm_mode_config *config; + struct drm_live_source *src; + uint32_t __user *src_ptr; + int copied = 0, ret = 0; + + if (!drm_core_check_feature(dev, DRIVER_MODESET)) + return -EINVAL; + + drm_modeset_lock_all(dev); + config = &dev->mode_config; + + /* + * This ioctl is called twice, once to determine how much space is + * needed, and the 2nd time to fill it. + */ + if (config->num_live_source && + (src_resp->count_sources >= config->num_live_source)) { + src_ptr = (uint32_t __user *)(unsigned long)src_resp->source_id_ptr; + + list_for_each_entry(src, &config->live_source_list, head) { + if (put_user(src->base.id, src_ptr + copied)) { + ret = -EFAULT; + goto out; + } + copied++; + } + } + src_resp->count_sources = config->num_live_source; + +out: + drm_modeset_unlock_all(dev); + return ret; +} + +/** + * drm_mode_getsource - get live source info + * @dev: DRM device + * @data: ioctl data + * @file_priv: DRM file info + * + * Return live source info, including formats supported, ... + */ +int drm_mode_getsource(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_mode_get_live_source *src_resp = data; + struct drm_mode_object *obj; + struct drm_live_source *src; + + if (!drm_core_check_feature(dev, DRIVER_MODESET)) + return -EINVAL; + + obj = drm_mode_object_find(dev, src_resp->source_id, + DRM_MODE_OBJECT_LIVE_SOURCE); + if (!obj) + return -ENOENT; + src = obj_to_live_source(obj); + + src_resp->source_id = src->base.id; + strlcpy(src_resp->name, src->name, DRM_SOURCE_NAME_LEN); + src_resp->possible_planes = src->possible_planes; + + /* + * This ioctl is called twice, once to determine how much space is + * needed, and the 2nd time to fill it. + */ + if (src->format_count && + (src_resp->count_format_types >= src->format_count)) { + uint32_t __user *format_ptr; + + format_ptr = (uint32_t __user *)(unsigned long)src_resp->format_type_ptr; + if (copy_to_user(format_ptr, src->format_types, + sizeof(uint32_t) * src->format_count)) { + return -EFAULT; + } + } + src_resp->count_format_types = src->format_count; + + return 0; +} + +/** * drm_mode_set_config_internal - helper to call ->set_config * @set: modeset config to set * Index: linux/drivers/gpu/drm/drm_crtc_internal.h =================================================================== --- linux.orig/drivers/gpu/drm/drm_crtc_internal.h +++ linux/drivers/gpu/drm/drm_crtc_internal.h @@ -50,6 +50,10 @@ int drm_mode_getcrtc(struct drm_device * void *data, struct drm_file *file_priv); int drm_mode_setcrtc(struct drm_device *dev, void *data, struct drm_file *file_priv); +int drm_mode_getsource_res(struct drm_device *dev, void *data, + struct drm_file *file_priv); +int drm_mode_getsource(struct drm_device *dev, void *data, + struct drm_file *file_priv); /* drm_mode_config.c */ Index: linux/drivers/gpu/drm/drm_ioctl.c =================================================================== --- linux.orig/drivers/gpu/drm/drm_ioctl.c +++ linux/drivers/gpu/drm/drm_ioctl.c @@ -612,10 +612,12 @@ static const struct drm_ioctl_desc drm_i DRM_IOCTL_DEF(DRM_IOCTL_PRIME_FD_TO_HANDLE, drm_prime_fd_to_handle_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW), DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_CONTROL_ALLOW|DRM_UNLOCKED), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETSOURCERESOURCES, drm_mode_getsource_res, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETSOURCE, drm_mode_getsource, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED), Index: linux/drivers/gpu/drm/drm_mode_config.c =================================================================== --- linux.orig/drivers/gpu/drm/drm_mode_config.c +++ linux/drivers/gpu/drm/drm_mode_config.c @@ -366,6 +366,7 @@ void drm_mode_config_init(struct drm_dev INIT_LIST_HEAD(&dev->mode_config.property_list); INIT_LIST_HEAD(&dev->mode_config.property_blob_list); INIT_LIST_HEAD(&dev->mode_config.plane_list); + INIT_LIST_HEAD(&dev->mode_config.live_source_list); idr_init(&dev->mode_config.crtc_idr); idr_init(&dev->mode_config.tile_idr); ida_init(&dev->mode_config.connector_ida); @@ -406,6 +407,7 @@ void drm_mode_config_cleanup(struct drm_ struct drm_property *property, *pt; struct drm_property_blob *blob, *bt; struct drm_plane *plane, *plt; + struct drm_live_source *src, *psrc; list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, head) { @@ -433,6 +435,11 @@ void drm_mode_config_cleanup(struct drm_ plane->funcs->destroy(plane); } + list_for_each_entry_safe(src, psrc, &dev->mode_config.live_source_list, + head) { + src->funcs->destroy(src); + } + list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { crtc->funcs->destroy(crtc); } Index: linux/drivers/gpu/drm/drm_plane.c =================================================================== --- linux.orig/drivers/gpu/drm/drm_plane.c +++ linux/drivers/gpu/drm/drm_plane.c @@ -248,6 +248,68 @@ void drm_plane_cleanup(struct drm_plane } EXPORT_SYMBOL(drm_plane_cleanup); +int drm_live_source_init(struct drm_device *dev, struct drm_live_source *src, + const char *name, unsigned long possible_planes, + const uint32_t *formats, uint32_t format_count, + const struct drm_live_source_funcs *funcs) +{ + unsigned int i; + int ret; + + /* Multi-planar live sources are not supported for now. */ + for (i = 0; i < format_count; ++i) { + if (drm_format_num_planes(formats[i]) != 1) { + DRM_DEBUG_KMS("multiplanar live sources unsupported\n"); + return -EINVAL; + } + } + + drm_modeset_lock_all(dev); + + ret = drm_mode_object_get(dev, &src->base, DRM_MODE_OBJECT_LIVE_SOURCE); + if (ret) + goto out; + + src->dev = dev; + src->funcs = funcs; + if (name) + strlcpy(src->name, name, DRM_SOURCE_NAME_LEN); + src->possible_planes = possible_planes; + + src->format_types = kmalloc_array(format_count, + sizeof(*src->format_types), + GFP_KERNEL); + if (!src->format_types) { + DRM_DEBUG_KMS("out of memory when allocating source foramts\n"); + ret = -ENOMEM; + goto out; + } + + memcpy(src->format_types, formats, + format_count * sizeof(*src->format_types)); + src->format_count = format_count; + + list_add_tail(&src->head, &dev->mode_config.live_source_list); + dev->mode_config.num_live_source++; + + out: + drm_modeset_unlock_all(dev); + + return ret; +} +EXPORT_SYMBOL(drm_live_source_init); + +void drm_live_source_cleanup(struct drm_live_source *src) +{ + struct drm_device *dev = src->dev; + + drm_modeset_lock_all(dev); + list_del(&src->head); + dev->mode_config.num_live_source--; + drm_modeset_unlock_all(dev); +} +EXPORT_SYMBOL(drm_live_source_cleanup); + /** * drm_plane_from_index - find the registered plane at an index * @dev: DRM device Index: linux/include/drm/drm_mode_config.h =================================================================== --- linux.orig/include/drm/drm_mode_config.h +++ linux/include/drm/drm_mode_config.h @@ -396,6 +396,8 @@ struct drm_mode_config { int num_overlay_plane; int num_total_plane; struct list_head plane_list; + int num_live_source; + struct list_head live_source_list; int num_crtc; struct list_head crtc_list; Index: linux/include/drm/drm_plane.h =================================================================== --- linux.orig/include/drm/drm_plane.h +++ linux/include/drm/drm_plane.h @@ -29,6 +29,7 @@ struct drm_crtc; struct drm_printer; +struct drm_live_source; /** * struct drm_plane_state - mutable plane state @@ -527,6 +528,34 @@ extern int drm_plane_init(struct drm_dev bool is_primary); extern void drm_plane_cleanup(struct drm_plane *plane); +struct drm_live_source_funcs { + void (*destroy)(struct drm_live_source *src); +}; + +struct drm_live_source { + struct drm_device *dev; + struct list_head head; + + struct drm_mode_object base; + + char name[DRM_SOURCE_NAME_LEN]; + + uint32_t possible_planes; + uint32_t *format_types; + uint32_t format_count; + + const struct drm_live_source_funcs *funcs; +}; + +#define obj_to_live_source(x) container_of(x, struct drm_live_source, base) + +extern int drm_live_source_init(struct drm_device *dev, + struct drm_live_source *src, const char *name, + unsigned long possible_planes, + const uint32_t *formats, uint32_t format_count, + const struct drm_live_source_funcs *funcs); +extern void drm_live_source_cleanup(struct drm_live_source *src); + /** * drm_plane_index - find the index of a registered plane * @plane: plane to find index for Index: linux/include/uapi/drm/drm.h =================================================================== --- linux.orig/include/uapi/drm/drm.h +++ linux/include/uapi/drm/drm.h @@ -814,6 +814,9 @@ extern "C" { #define DRM_IOCTL_MODE_CREATEPROPBLOB DRM_IOWR(0xBD, struct drm_mode_create_blob) #define DRM_IOCTL_MODE_DESTROYPROPBLOB DRM_IOWR(0xBE, struct drm_mode_destroy_blob) +#define DRM_IOCTL_MODE_GETSOURCERESOURCES DRM_IOWR(0xBF, struct drm_mode_get_live_source_res) +#define DRM_IOCTL_MODE_GETSOURCE DRM_IOWR(0xC0, struct drm_mode_get_live_source) + /** * Device specific ioctls should only be in their respective headers * The device specific ioctl range is from 0x40 to 0x9f. Index: linux/include/uapi/drm/drm_mode.h =================================================================== --- linux.orig/include/uapi/drm/drm_mode.h +++ linux/include/uapi/drm/drm_mode.h @@ -37,6 +37,7 @@ extern "C" { #define DRM_CONNECTOR_NAME_LEN 32 #define DRM_DISPLAY_MODE_LEN 32 #define DRM_PROP_NAME_LEN 32 +#define DRM_SOURCE_NAME_LEN 32 #define DRM_MODE_TYPE_BUILTIN (1<<0) #define DRM_MODE_TYPE_CLOCK_C ((1<<1) | DRM_MODE_TYPE_BUILTIN) @@ -214,6 +215,21 @@ struct drm_mode_get_plane_res { __u32 count_planes; }; +struct drm_mode_get_live_source { + __u32 source_id; + char name[DRM_SOURCE_NAME_LEN]; + + __u32 possible_planes; + + __u32 count_format_types; + __u64 format_type_ptr; +}; + +struct drm_mode_get_live_source_res { + __u64 source_id_ptr; + __u32 count_sources; +}; + #define DRM_MODE_ENCODER_NONE 0 #define DRM_MODE_ENCODER_DAC 1 #define DRM_MODE_ENCODER_TMDS 2 @@ -352,6 +368,7 @@ struct drm_mode_connector_set_property { #define DRM_MODE_OBJECT_FB 0xfbfbfbfb #define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb #define DRM_MODE_OBJECT_PLANE 0xeeeeeeee +#define DRM_MODE_OBJECT_LIVE_SOURCE 0xe1e1e1e1 #define DRM_MODE_OBJECT_ANY 0 struct drm_mode_obj_get_properties {