[PATCH v2 0/4] Add support for video pattern DP CTS to MSM DP

[PATCH v2 0/4] Add support for video pattern DP CTS to MSM DP

[Abhinav Kumar]

Add support for video pattern Display Port Compliance tests to
MSM DP driver. The userspace component of this shall be part of another
series in the igt mailing list.
This depends on series [1] , [2] and [3] which add basic Display Port
support to MSM chipsets.

[1] https://patchwork.kernel.org/project/dri-devel/list/?series=339847
[2] https://patchwork.freedesktop.org/patch/390217/?series=79210&rev=8
[3] https://patchwork.kernel.org/project/dri-devel/list/?series=347831

Changes in v2: rebase on top of latest patchset of dependencies

Abhinav Kumar (4):
  drm/msm/dp: add debugfs support to DP driver
  drm/msm/dp: move debugfs node to /sys/kernel/debug/dri/*/
  drm/msm/dp: add debugfs nodes for video pattern tests
  drm/msm/dp: remove mode hard-coding in case of DP CTS

 drivers/gpu/drm/msm/Makefile            |   3 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c |   7 +
 drivers/gpu/drm/msm/dp/dp_debug.c       | 485 ++++++++++++++++++++++++
 drivers/gpu/drm/msm/dp/dp_debug.h       |  74 ++++
 drivers/gpu/drm/msm/dp/dp_display.c     |  28 +-
 drivers/gpu/drm/msm/dp/dp_link.c        |   2 +-
 drivers/gpu/drm/msm/dp/dp_link.h        |  23 ++
 drivers/gpu/drm/msm/dp/dp_panel.c       |  46 +--
 drivers/gpu/drm/msm/msm_drv.h           |   2 +
 9 files changed, 617 insertions(+), 53 deletions(-)
 create mode 100644 drivers/gpu/drm/msm/dp/dp_debug.c
 create mode 100644 drivers/gpu/drm/msm/dp/dp_debug.h

-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH v2 0/4] Add support for video pattern DP CTS to MSM DP

[Abhinav Kumar]

Add support for video pattern Display Port Compliance tests to
MSM DP driver. The userspace component of this shall be part of another
series in the igt mailing list.
This depends on series [1] , [2] and [3] which add basic Display Port
support to MSM chipsets.

[1] https://patchwork.kernel.org/project/dri-devel/list/?series=339847
[2] https://patchwork.freedesktop.org/patch/390217/?series=79210&rev=8
[3] https://patchwork.kernel.org/project/dri-devel/list/?series=347831

Changes in v2: rebase on top of latest patchset of dependencies

Abhinav Kumar (4):
  drm/msm/dp: add debugfs support to DP driver
  drm/msm/dp: move debugfs node to /sys/kernel/debug/dri/*/
  drm/msm/dp: add debugfs nodes for video pattern tests
  drm/msm/dp: remove mode hard-coding in case of DP CTS

 drivers/gpu/drm/msm/Makefile            |   3 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c |   7 +
 drivers/gpu/drm/msm/dp/dp_debug.c       | 485 ++++++++++++++++++++++++
 drivers/gpu/drm/msm/dp/dp_debug.h       |  74 ++++
 drivers/gpu/drm/msm/dp/dp_display.c     |  28 +-
 drivers/gpu/drm/msm/dp/dp_link.c        |   2 +-
 drivers/gpu/drm/msm/dp/dp_link.h        |  23 ++
 drivers/gpu/drm/msm/dp/dp_panel.c       |  46 +--
 drivers/gpu/drm/msm/msm_drv.h           |   2 +
 9 files changed, 617 insertions(+), 53 deletions(-)
 create mode 100644 drivers/gpu/drm/msm/dp/dp_debug.c
 create mode 100644 drivers/gpu/drm/msm/dp/dp_debug.h

-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[PATCH v2 1/4] drm/msm/dp: add debugfs support to DP driver

[Abhinav Kumar]

To prepare the MSM DP driver for running video pattern
compliance tests introduce debugfs module for it.

Changes in v2: rebase on top of latest patchset of dependency

Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
---
 drivers/gpu/drm/msm/Makefile        |   3 +-
 drivers/gpu/drm/msm/dp/dp_debug.c   | 310 ++++++++++++++++++++++++++++
 drivers/gpu/drm/msm/dp/dp_debug.h   |  71 +++++++
 drivers/gpu/drm/msm/dp/dp_display.c |  13 ++
 4 files changed, 396 insertions(+), 1 deletion(-)
 create mode 100644 drivers/gpu/drm/msm/dp/dp_debug.c
 create mode 100644 drivers/gpu/drm/msm/dp/dp_debug.h

diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile
index db1bdd35bbf5..c9dda1413c33 100644
--- a/drivers/gpu/drm/msm/Makefile
+++ b/drivers/gpu/drm/msm/Makefile
@@ -96,7 +96,8 @@ msm-y := \
 	msm_gpu_tracepoints.o \
 	msm_gpummu.o
 
-msm-$(CONFIG_DEBUG_FS) += adreno/a5xx_debugfs.o
+msm-$(CONFIG_DEBUG_FS) += adreno/a5xx_debugfs.o \
+	dp/dp_debug.o
 
 msm-$(CONFIG_DRM_MSM_GPU_STATE)	+= adreno/a6xx_gpu_state.o
 
diff --git a/drivers/gpu/drm/msm/dp/dp_debug.c b/drivers/gpu/drm/msm/dp/dp_debug.c
new file mode 100644
index 000000000000..92019f3e1a1f
--- /dev/null
+++ b/drivers/gpu/drm/msm/dp/dp_debug.c
@@ -0,0 +1,310 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
+ */
+
+#define pr_fmt(fmt)"[drm-dp] %s: " fmt, __func__
+
+#include <linux/debugfs.h>
+#include <drm/drm_connector.h>
+
+#include "dp_parser.h"
+#include "dp_catalog.h"
+#include "dp_aux.h"
+#include "dp_ctrl.h"
+#include "dp_debug.h"
+#include "dp_display.h"
+
+#define DEBUG_NAME "drm_dp"
+
+struct dp_debug_private {
+	struct dentry *root;
+
+	struct dp_usbpd *usbpd;
+	struct dp_link *link;
+	struct dp_panel *panel;
+	struct drm_connector **connector;
+	struct device *dev;
+
+	struct dp_debug dp_debug;
+};
+
+static int dp_debug_check_buffer_overflow(int rc, int *max_size, int *len)
+{
+	if (rc >= *max_size) {
+		DRM_ERROR("buffer overflow\n");
+		return -EINVAL;
+	}
+	*len += rc;
+	*max_size = SZ_4K - *len;
+
+	return 0;
+}
+
+static ssize_t dp_debug_read_info(struct file *file, char __user *user_buff,
+		size_t count, loff_t *ppos)
+{
+	struct dp_debug_private *debug = file->private_data;
+	char *buf;
+	u32 len = 0, rc = 0;
+	u64 lclk = 0;
+	u32 max_size = SZ_4K;
+	u32 link_params_rate;
+	struct drm_display_mode *drm_mode;
+
+	if (!debug)
+		return -ENODEV;
+
+	if (*ppos)
+		return 0;
+
+	buf = kzalloc(SZ_4K, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	drm_mode = &debug->panel->dp_mode.drm_mode;
+
+	rc = snprintf(buf + len, max_size, "\tname = %s\n", DEBUG_NAME);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\tdp_panel\n\t\tmax_pclk_khz = %d\n",
+			debug->panel->max_pclk_khz);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\tdrm_dp_link\n\t\trate = %u\n",
+			debug->panel->link_info.rate);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			 "\t\tnum_lanes = %u\n",
+			debug->panel->link_info.num_lanes);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tcapabilities = %lu\n",
+			debug->panel->link_info.capabilities);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\tdp_panel_info:\n\t\tactive = %dx%d\n",
+			drm_mode->hdisplay,
+			drm_mode->vdisplay);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tback_porch = %dx%d\n",
+			drm_mode->htotal - drm_mode->hsync_end,
+			drm_mode->vtotal - drm_mode->vsync_end);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tfront_porch = %dx%d\n",
+			drm_mode->hsync_start - drm_mode->hdisplay,
+			drm_mode->vsync_start - drm_mode->vdisplay);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tsync_width = %dx%d\n",
+			drm_mode->hsync_end - drm_mode->hsync_start,
+			drm_mode->vsync_end - drm_mode->vsync_start);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tactive_low = %dx%d\n",
+			debug->panel->dp_mode.h_active_low,
+			debug->panel->dp_mode.v_active_low);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\th_skew = %d\n",
+			drm_mode->hskew);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\trefresh rate = %d\n",
+			drm_mode->vrefresh);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tpixel clock khz = %d\n",
+			drm_mode->clock);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tbpp = %d\n",
+			debug->panel->dp_mode.bpp);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	/* Link Information */
+	rc = snprintf(buf + len, max_size,
+			"\tdp_link:\n\t\ttest_requested = %d\n",
+			debug->link->sink_request);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tnum_lanes = %d\n",
+			debug->link->link_params.num_lanes);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	link_params_rate = debug->link->link_params.rate;
+	rc = snprintf(buf + len, max_size,
+			"\t\tbw_code = %d\n",
+			drm_dp_link_rate_to_bw_code(link_params_rate));
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	lclk = debug->link->link_params.rate * 1000;
+	rc = snprintf(buf + len, max_size,
+			"\t\tlclk = %lld\n", lclk);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tv_level = %d\n",
+			debug->link->phy_params.v_level);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tp_level = %d\n",
+			debug->link->phy_params.p_level);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	if (copy_to_user(user_buff, buf, len))
+		goto error;
+
+	*ppos += len;
+
+	kfree(buf);
+	return len;
+ error:
+	kfree(buf);
+	return -EINVAL;
+}
+
+static const struct file_operations dp_debug_fops = {
+	.open = simple_open,
+	.read = dp_debug_read_info,
+};
+
+static int dp_debug_init(struct dp_debug *dp_debug)
+{
+	int rc = 0;
+	struct dp_debug_private *debug = container_of(dp_debug,
+			struct dp_debug_private, dp_debug);
+	struct dentry *dir, *file;
+
+	dir = debugfs_create_dir(DEBUG_NAME, NULL);
+	if (IS_ERR_OR_NULL(dir)) {
+		rc = PTR_ERR(dir);
+		DRM_ERROR("[%s] debugfs create dir failed, rc = %d\n",
+				  DEBUG_NAME, rc);
+		goto error;
+	}
+
+	file = debugfs_create_file("dp_debug", 0444, dir,
+			debug, &dp_debug_fops);
+	if (IS_ERR_OR_NULL(file)) {
+		rc = PTR_ERR(file);
+		DRM_ERROR("[%s] debugfs create file failed, rc=%d\n",
+				  DEBUG_NAME, rc);
+		goto error_remove_dir;
+	}
+
+	debug->root = dir;
+	return rc;
+ error_remove_dir:
+	debugfs_remove(dir);
+ error:
+	return rc;
+}
+
+struct dp_debug *dp_debug_get(struct device *dev, struct dp_panel *panel,
+		struct dp_usbpd *usbpd, struct dp_link *link,
+		struct drm_connector **connector)
+{
+	int rc = 0;
+	struct dp_debug_private *debug;
+	struct dp_debug *dp_debug;
+
+	if (!dev || !panel || !usbpd || !link) {
+		DRM_ERROR("invalid input\n");
+		rc = -EINVAL;
+		goto error;
+	}
+
+	debug = devm_kzalloc(dev, sizeof(*debug), GFP_KERNEL);
+	if (!debug) {
+		rc = -ENOMEM;
+		goto error;
+	}
+
+	debug->dp_debug.debug_en = false;
+	debug->usbpd = usbpd;
+	debug->link = link;
+	debug->panel = panel;
+	debug->dev = dev;
+	debug->connector = connector;
+
+	dp_debug = &debug->dp_debug;
+	dp_debug->vdisplay = 0;
+	dp_debug->hdisplay = 0;
+	dp_debug->vrefresh = 0;
+
+	rc = dp_debug_init(dp_debug);
+	if (rc) {
+		devm_kfree(dev, debug);
+		goto error;
+	}
+
+	return dp_debug;
+ error:
+	return ERR_PTR(rc);
+}
+
+static int dp_debug_deinit(struct dp_debug *dp_debug)
+{
+	struct dp_debug_private *debug;
+
+	if (!dp_debug)
+		return -EINVAL;
+
+	debug = container_of(dp_debug, struct dp_debug_private, dp_debug);
+
+	debugfs_remove_recursive(debug->root);
+
+	return 0;
+}
+
+void dp_debug_put(struct dp_debug *dp_debug)
+{
+	struct dp_debug_private *debug;
+
+	if (!dp_debug)
+		return;
+
+	debug = container_of(dp_debug, struct dp_debug_private, dp_debug);
+
+	dp_debug_deinit(dp_debug);
+
+	devm_kfree(debug->dev, debug);
+}
diff --git a/drivers/gpu/drm/msm/dp/dp_debug.h b/drivers/gpu/drm/msm/dp/dp_debug.h
new file mode 100644
index 000000000000..fddf827ac089
--- /dev/null
+++ b/drivers/gpu/drm/msm/dp/dp_debug.h
@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef _DP_DEBUG_H_
+#define _DP_DEBUG_H_
+
+#include "dp_panel.h"
+#include "dp_link.h"
+
+/**
+ * struct dp_debug
+ * @debug_en: specifies whether debug mode enabled
+ * @vdisplay: used to filter out vdisplay value
+ * @hdisplay: used to filter out hdisplay value
+ * @vrefresh: used to filter out vrefresh value
+ * @tpg_state: specifies whether tpg feature is enabled
+ */
+struct dp_debug {
+	bool debug_en;
+	int aspect_ratio;
+	int vdisplay;
+	int hdisplay;
+	int vrefresh;
+};
+
+#if defined(CONFIG_DEBUG_FS)
+
+/**
+ * dp_debug_get() - configure and get the DisplayPlot debug module data
+ *
+ * @dev: device instance of the caller
+ * @panel: instance of panel module
+ * @usbpd: instance of usbpd module
+ * @link: instance of link module
+ * @connector: double pointer to display connector
+ * return: pointer to allocated debug module data
+ *
+ * This function sets up the debug module and provides a way
+ * for debugfs input to be communicated with existing modules
+ */
+struct dp_debug *dp_debug_get(struct device *dev, struct dp_panel *panel,
+		struct dp_usbpd *usbpd, struct dp_link *link,
+		struct drm_connector **connector);
+/**
+ * dp_debug_put()
+ *
+ * Cleans up dp_debug instance
+ *
+ * @dp_debug: instance of dp_debug
+ */
+void dp_debug_put(struct dp_debug *dp_debug);
+
+#else
+
+static inline
+struct dp_debug *dp_debug_get(struct device *dev, struct dp_panel *panel,
+		struct dp_usbpd *usbpd, struct dp_link *link,
+		struct drm_connector **connector)
+{
+	return ERR_PTR(-EINVAL);
+}
+
+static inline void dp_debug_put(struct dp_debug *dp_debug)
+{
+}
+
+#endif /* defined(CONFIG_DEBUG_FS) */
+
+#endif /* _DP_DEBUG_H_ */
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 857ae04e48ef..bcebde784570 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -26,6 +26,7 @@
 #include "dp_drm.h"
 #include "dp_pll.h"
 #include "dp_audio.h"
+#include "dp_debug.h"
 
 static struct msm_dp *g_dp_display;
 #define HPD_STRING_SIZE 30
@@ -659,6 +660,7 @@ static int dp_irq_hpd_handle(struct dp_display_private *dp, u32 data)
 
 static void dp_display_deinit_sub_modules(struct dp_display_private *dp)
 {
+	dp_debug_put(dp->debug);
 	dp_ctrl_put(dp->ctrl);
 	dp_panel_put(dp->panel);
 	dp_aux_put(dp->aux);
@@ -771,8 +773,19 @@ static int dp_init_sub_modules(struct dp_display_private *dp)
 		goto error_audio;
 	}
 
+	dp->debug = dp_debug_get(dev, dp->panel, dp->usbpd,
+			dp->link, &dp->dp_display.connector);
+	if (IS_ERR(dp->debug)) {
+		rc = PTR_ERR(dp->debug);
+		DRM_ERROR("failed to initialize debug, rc = %d\n", rc);
+		dp->debug = NULL;
+		goto error_debug;
+	}
+
 	return rc;
 
+error_debug:
+	dp_audio_put(dp->audio);
 error_audio:
 	dp_ctrl_put(dp->ctrl);
 error_ctrl:
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH v2 1/4] drm/msm/dp: add debugfs support to DP driver

[Abhinav Kumar]

To prepare the MSM DP driver for running video pattern
compliance tests introduce debugfs module for it.

Changes in v2: rebase on top of latest patchset of dependency

Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
---
 drivers/gpu/drm/msm/Makefile        |   3 +-
 drivers/gpu/drm/msm/dp/dp_debug.c   | 310 ++++++++++++++++++++++++++++
 drivers/gpu/drm/msm/dp/dp_debug.h   |  71 +++++++
 drivers/gpu/drm/msm/dp/dp_display.c |  13 ++
 4 files changed, 396 insertions(+), 1 deletion(-)
 create mode 100644 drivers/gpu/drm/msm/dp/dp_debug.c
 create mode 100644 drivers/gpu/drm/msm/dp/dp_debug.h

diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile
index db1bdd35bbf5..c9dda1413c33 100644
--- a/drivers/gpu/drm/msm/Makefile
+++ b/drivers/gpu/drm/msm/Makefile
@@ -96,7 +96,8 @@ msm-y := \
 	msm_gpu_tracepoints.o \
 	msm_gpummu.o
 
-msm-$(CONFIG_DEBUG_FS) += adreno/a5xx_debugfs.o
+msm-$(CONFIG_DEBUG_FS) += adreno/a5xx_debugfs.o \
+	dp/dp_debug.o
 
 msm-$(CONFIG_DRM_MSM_GPU_STATE)	+= adreno/a6xx_gpu_state.o
 
diff --git a/drivers/gpu/drm/msm/dp/dp_debug.c b/drivers/gpu/drm/msm/dp/dp_debug.c
new file mode 100644
index 000000000000..92019f3e1a1f
--- /dev/null
+++ b/drivers/gpu/drm/msm/dp/dp_debug.c
@@ -0,0 +1,310 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
+ */
+
+#define pr_fmt(fmt)"[drm-dp] %s: " fmt, __func__
+
+#include <linux/debugfs.h>
+#include <drm/drm_connector.h>
+
+#include "dp_parser.h"
+#include "dp_catalog.h"
+#include "dp_aux.h"
+#include "dp_ctrl.h"
+#include "dp_debug.h"
+#include "dp_display.h"
+
+#define DEBUG_NAME "drm_dp"
+
+struct dp_debug_private {
+	struct dentry *root;
+
+	struct dp_usbpd *usbpd;
+	struct dp_link *link;
+	struct dp_panel *panel;
+	struct drm_connector **connector;
+	struct device *dev;
+
+	struct dp_debug dp_debug;
+};
+
+static int dp_debug_check_buffer_overflow(int rc, int *max_size, int *len)
+{
+	if (rc >= *max_size) {
+		DRM_ERROR("buffer overflow\n");
+		return -EINVAL;
+	}
+	*len += rc;
+	*max_size = SZ_4K - *len;
+
+	return 0;
+}
+
+static ssize_t dp_debug_read_info(struct file *file, char __user *user_buff,
+		size_t count, loff_t *ppos)
+{
+	struct dp_debug_private *debug = file->private_data;
+	char *buf;
+	u32 len = 0, rc = 0;
+	u64 lclk = 0;
+	u32 max_size = SZ_4K;
+	u32 link_params_rate;
+	struct drm_display_mode *drm_mode;
+
+	if (!debug)
+		return -ENODEV;
+
+	if (*ppos)
+		return 0;
+
+	buf = kzalloc(SZ_4K, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	drm_mode = &debug->panel->dp_mode.drm_mode;
+
+	rc = snprintf(buf + len, max_size, "\tname = %s\n", DEBUG_NAME);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\tdp_panel\n\t\tmax_pclk_khz = %d\n",
+			debug->panel->max_pclk_khz);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\tdrm_dp_link\n\t\trate = %u\n",
+			debug->panel->link_info.rate);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			 "\t\tnum_lanes = %u\n",
+			debug->panel->link_info.num_lanes);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tcapabilities = %lu\n",
+			debug->panel->link_info.capabilities);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\tdp_panel_info:\n\t\tactive = %dx%d\n",
+			drm_mode->hdisplay,
+			drm_mode->vdisplay);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tback_porch = %dx%d\n",
+			drm_mode->htotal - drm_mode->hsync_end,
+			drm_mode->vtotal - drm_mode->vsync_end);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tfront_porch = %dx%d\n",
+			drm_mode->hsync_start - drm_mode->hdisplay,
+			drm_mode->vsync_start - drm_mode->vdisplay);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tsync_width = %dx%d\n",
+			drm_mode->hsync_end - drm_mode->hsync_start,
+			drm_mode->vsync_end - drm_mode->vsync_start);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tactive_low = %dx%d\n",
+			debug->panel->dp_mode.h_active_low,
+			debug->panel->dp_mode.v_active_low);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\th_skew = %d\n",
+			drm_mode->hskew);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\trefresh rate = %d\n",
+			drm_mode->vrefresh);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tpixel clock khz = %d\n",
+			drm_mode->clock);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tbpp = %d\n",
+			debug->panel->dp_mode.bpp);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	/* Link Information */
+	rc = snprintf(buf + len, max_size,
+			"\tdp_link:\n\t\ttest_requested = %d\n",
+			debug->link->sink_request);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tnum_lanes = %d\n",
+			debug->link->link_params.num_lanes);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	link_params_rate = debug->link->link_params.rate;
+	rc = snprintf(buf + len, max_size,
+			"\t\tbw_code = %d\n",
+			drm_dp_link_rate_to_bw_code(link_params_rate));
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	lclk = debug->link->link_params.rate * 1000;
+	rc = snprintf(buf + len, max_size,
+			"\t\tlclk = %lld\n", lclk);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tv_level = %d\n",
+			debug->link->phy_params.v_level);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	rc = snprintf(buf + len, max_size,
+			"\t\tp_level = %d\n",
+			debug->link->phy_params.p_level);
+	if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
+		goto error;
+
+	if (copy_to_user(user_buff, buf, len))
+		goto error;
+
+	*ppos += len;
+
+	kfree(buf);
+	return len;
+ error:
+	kfree(buf);
+	return -EINVAL;
+}
+
+static const struct file_operations dp_debug_fops = {
+	.open = simple_open,
+	.read = dp_debug_read_info,
+};
+
+static int dp_debug_init(struct dp_debug *dp_debug)
+{
+	int rc = 0;
+	struct dp_debug_private *debug = container_of(dp_debug,
+			struct dp_debug_private, dp_debug);
+	struct dentry *dir, *file;
+
+	dir = debugfs_create_dir(DEBUG_NAME, NULL);
+	if (IS_ERR_OR_NULL(dir)) {
+		rc = PTR_ERR(dir);
+		DRM_ERROR("[%s] debugfs create dir failed, rc = %d\n",
+				  DEBUG_NAME, rc);
+		goto error;
+	}
+
+	file = debugfs_create_file("dp_debug", 0444, dir,
+			debug, &dp_debug_fops);
+	if (IS_ERR_OR_NULL(file)) {
+		rc = PTR_ERR(file);
+		DRM_ERROR("[%s] debugfs create file failed, rc=%d\n",
+				  DEBUG_NAME, rc);
+		goto error_remove_dir;
+	}
+
+	debug->root = dir;
+	return rc;
+ error_remove_dir:
+	debugfs_remove(dir);
+ error:
+	return rc;
+}
+
+struct dp_debug *dp_debug_get(struct device *dev, struct dp_panel *panel,
+		struct dp_usbpd *usbpd, struct dp_link *link,
+		struct drm_connector **connector)
+{
+	int rc = 0;
+	struct dp_debug_private *debug;
+	struct dp_debug *dp_debug;
+
+	if (!dev || !panel || !usbpd || !link) {
+		DRM_ERROR("invalid input\n");
+		rc = -EINVAL;
+		goto error;
+	}
+
+	debug = devm_kzalloc(dev, sizeof(*debug), GFP_KERNEL);
+	if (!debug) {
+		rc = -ENOMEM;
+		goto error;
+	}
+
+	debug->dp_debug.debug_en = false;
+	debug->usbpd = usbpd;
+	debug->link = link;
+	debug->panel = panel;
+	debug->dev = dev;
+	debug->connector = connector;
+
+	dp_debug = &debug->dp_debug;
+	dp_debug->vdisplay = 0;
+	dp_debug->hdisplay = 0;
+	dp_debug->vrefresh = 0;
+
+	rc = dp_debug_init(dp_debug);
+	if (rc) {
+		devm_kfree(dev, debug);
+		goto error;
+	}
+
+	return dp_debug;
+ error:
+	return ERR_PTR(rc);
+}
+
+static int dp_debug_deinit(struct dp_debug *dp_debug)
+{
+	struct dp_debug_private *debug;
+
+	if (!dp_debug)
+		return -EINVAL;
+
+	debug = container_of(dp_debug, struct dp_debug_private, dp_debug);
+
+	debugfs_remove_recursive(debug->root);
+
+	return 0;
+}
+
+void dp_debug_put(struct dp_debug *dp_debug)
+{
+	struct dp_debug_private *debug;
+
+	if (!dp_debug)
+		return;
+
+	debug = container_of(dp_debug, struct dp_debug_private, dp_debug);
+
+	dp_debug_deinit(dp_debug);
+
+	devm_kfree(debug->dev, debug);
+}
diff --git a/drivers/gpu/drm/msm/dp/dp_debug.h b/drivers/gpu/drm/msm/dp/dp_debug.h
new file mode 100644
index 000000000000..fddf827ac089
--- /dev/null
+++ b/drivers/gpu/drm/msm/dp/dp_debug.h
@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef _DP_DEBUG_H_
+#define _DP_DEBUG_H_
+
+#include "dp_panel.h"
+#include "dp_link.h"
+
+/**
+ * struct dp_debug
+ * @debug_en: specifies whether debug mode enabled
+ * @vdisplay: used to filter out vdisplay value
+ * @hdisplay: used to filter out hdisplay value
+ * @vrefresh: used to filter out vrefresh value
+ * @tpg_state: specifies whether tpg feature is enabled
+ */
+struct dp_debug {
+	bool debug_en;
+	int aspect_ratio;
+	int vdisplay;
+	int hdisplay;
+	int vrefresh;
+};
+
+#if defined(CONFIG_DEBUG_FS)
+
+/**
+ * dp_debug_get() - configure and get the DisplayPlot debug module data
+ *
+ * @dev: device instance of the caller
+ * @panel: instance of panel module
+ * @usbpd: instance of usbpd module
+ * @link: instance of link module
+ * @connector: double pointer to display connector
+ * return: pointer to allocated debug module data
+ *
+ * This function sets up the debug module and provides a way
+ * for debugfs input to be communicated with existing modules
+ */
+struct dp_debug *dp_debug_get(struct device *dev, struct dp_panel *panel,
+		struct dp_usbpd *usbpd, struct dp_link *link,
+		struct drm_connector **connector);
+/**
+ * dp_debug_put()
+ *
+ * Cleans up dp_debug instance
+ *
+ * @dp_debug: instance of dp_debug
+ */
+void dp_debug_put(struct dp_debug *dp_debug);
+
+#else
+
+static inline
+struct dp_debug *dp_debug_get(struct device *dev, struct dp_panel *panel,
+		struct dp_usbpd *usbpd, struct dp_link *link,
+		struct drm_connector **connector)
+{
+	return ERR_PTR(-EINVAL);
+}
+
+static inline void dp_debug_put(struct dp_debug *dp_debug)
+{
+}
+
+#endif /* defined(CONFIG_DEBUG_FS) */
+
+#endif /* _DP_DEBUG_H_ */
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 857ae04e48ef..bcebde784570 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -26,6 +26,7 @@
 #include "dp_drm.h"
 #include "dp_pll.h"
 #include "dp_audio.h"
+#include "dp_debug.h"
 
 static struct msm_dp *g_dp_display;
 #define HPD_STRING_SIZE 30
@@ -659,6 +660,7 @@ static int dp_irq_hpd_handle(struct dp_display_private *dp, u32 data)
 
 static void dp_display_deinit_sub_modules(struct dp_display_private *dp)
 {
+	dp_debug_put(dp->debug);
 	dp_ctrl_put(dp->ctrl);
 	dp_panel_put(dp->panel);
 	dp_aux_put(dp->aux);
@@ -771,8 +773,19 @@ static int dp_init_sub_modules(struct dp_display_private *dp)
 		goto error_audio;
 	}
 
+	dp->debug = dp_debug_get(dev, dp->panel, dp->usbpd,
+			dp->link, &dp->dp_display.connector);
+	if (IS_ERR(dp->debug)) {
+		rc = PTR_ERR(dp->debug);
+		DRM_ERROR("failed to initialize debug, rc = %d\n", rc);
+		dp->debug = NULL;
+		goto error_debug;
+	}
+
 	return rc;
 
+error_debug:
+	dp_audio_put(dp->audio);
 error_audio:
 	dp_ctrl_put(dp->ctrl);
 error_ctrl:
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[PATCH v2 2/4] drm/msm/dp: move debugfs node to /sys/kernel/debug/dri/*/

[Abhinav Kumar]

Move the MSM DP debugfs node from /sys/kernel/debug/drm_dp
to /sys/kernel/debug/dri/*/ as required for video pattern
compliance test suite.

Changes in v2: rebase on top of latest patchset of dependency

Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c |  7 +++++
 drivers/gpu/drm/msm/dp/dp_debug.c       | 31 ++++++++--------------
 drivers/gpu/drm/msm/dp/dp_debug.h       |  5 +++-
 drivers/gpu/drm/msm/dp/dp_display.c     | 34 +++++++++++++++----------
 drivers/gpu/drm/msm/msm_drv.h           |  2 ++
 5 files changed, 44 insertions(+), 35 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index bcb5ee50568c..db9e2761085b 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -195,10 +195,15 @@ static int dpu_kms_debugfs_init(struct msm_kms *kms, struct drm_minor *minor)
 	struct dpu_kms *dpu_kms = to_dpu_kms(kms);
 	void *p = dpu_hw_util_get_log_mask_ptr();
 	struct dentry *entry;
+	struct drm_device *dev;
+	struct msm_drm_private *priv;
 
 	if (!p)
 		return -EINVAL;
 
+	dev = dpu_kms->dev;
+	priv = dev->dev_private;
+
 	entry = debugfs_create_dir("debug", minor->debugfs_root);
 
 	debugfs_create_x32(DPU_DEBUGFS_HWMASKNAME, 0600, entry, p);
@@ -207,6 +212,8 @@ static int dpu_kms_debugfs_init(struct msm_kms *kms, struct drm_minor *minor)
 	dpu_debugfs_vbif_init(dpu_kms, entry);
 	dpu_debugfs_core_irq_init(dpu_kms, entry);
 
+	msm_dp_debugfs_init(priv->dp, minor);
+
 	return dpu_core_perf_debugfs_init(dpu_kms, entry);
 }
 #endif
diff --git a/drivers/gpu/drm/msm/dp/dp_debug.c b/drivers/gpu/drm/msm/dp/dp_debug.c
index 92019f3e1a1f..099e989f214d 100644
--- a/drivers/gpu/drm/msm/dp/dp_debug.c
+++ b/drivers/gpu/drm/msm/dp/dp_debug.c
@@ -7,6 +7,7 @@
 
 #include <linux/debugfs.h>
 #include <drm/drm_connector.h>
+#include <drm/drm_file.h>
 
 #include "dp_parser.h"
 #include "dp_catalog.h"
@@ -15,7 +16,7 @@
 #include "dp_debug.h"
 #include "dp_display.h"
 
-#define DEBUG_NAME "drm_dp"
+#define DEBUG_NAME "msm_dp"
 
 struct dp_debug_private {
 	struct dentry *root;
@@ -25,6 +26,7 @@ struct dp_debug_private {
 	struct dp_panel *panel;
 	struct drm_connector **connector;
 	struct device *dev;
+	struct drm_device *drm_dev;
 
 	struct dp_debug dp_debug;
 };
@@ -206,41 +208,29 @@ static const struct file_operations dp_debug_fops = {
 	.read = dp_debug_read_info,
 };
 
-static int dp_debug_init(struct dp_debug *dp_debug)
+static int dp_debug_init(struct dp_debug *dp_debug, struct drm_minor *minor)
 {
 	int rc = 0;
 	struct dp_debug_private *debug = container_of(dp_debug,
 			struct dp_debug_private, dp_debug);
-	struct dentry *dir, *file;
+	struct dentry *file;
 
-	dir = debugfs_create_dir(DEBUG_NAME, NULL);
-	if (IS_ERR_OR_NULL(dir)) {
-		rc = PTR_ERR(dir);
-		DRM_ERROR("[%s] debugfs create dir failed, rc = %d\n",
-				  DEBUG_NAME, rc);
-		goto error;
-	}
-
-	file = debugfs_create_file("dp_debug", 0444, dir,
+	file = debugfs_create_file("dp_debug", 0444, minor->debugfs_root,
 			debug, &dp_debug_fops);
 	if (IS_ERR_OR_NULL(file)) {
 		rc = PTR_ERR(file);
 		DRM_ERROR("[%s] debugfs create file failed, rc=%d\n",
 				  DEBUG_NAME, rc);
-		goto error_remove_dir;
 	}
 
-	debug->root = dir;
-	return rc;
- error_remove_dir:
-	debugfs_remove(dir);
- error:
+	debug->root = minor->debugfs_root;
+
 	return rc;
 }
 
 struct dp_debug *dp_debug_get(struct device *dev, struct dp_panel *panel,
 		struct dp_usbpd *usbpd, struct dp_link *link,
-		struct drm_connector **connector)
+		struct drm_connector **connector, struct drm_minor *minor)
 {
 	int rc = 0;
 	struct dp_debug_private *debug;
@@ -263,6 +253,7 @@ struct dp_debug *dp_debug_get(struct device *dev, struct dp_panel *panel,
 	debug->link = link;
 	debug->panel = panel;
 	debug->dev = dev;
+	debug->drm_dev = minor->dev;
 	debug->connector = connector;
 
 	dp_debug = &debug->dp_debug;
@@ -270,7 +261,7 @@ struct dp_debug *dp_debug_get(struct device *dev, struct dp_panel *panel,
 	dp_debug->hdisplay = 0;
 	dp_debug->vrefresh = 0;
 
-	rc = dp_debug_init(dp_debug);
+	rc = dp_debug_init(dp_debug, minor);
 	if (rc) {
 		devm_kfree(dev, debug);
 		goto error;
diff --git a/drivers/gpu/drm/msm/dp/dp_debug.h b/drivers/gpu/drm/msm/dp/dp_debug.h
index fddf827ac089..377e166fd0ea 100644
--- a/drivers/gpu/drm/msm/dp/dp_debug.h
+++ b/drivers/gpu/drm/msm/dp/dp_debug.h
@@ -35,6 +35,7 @@ struct dp_debug {
  * @usbpd: instance of usbpd module
  * @link: instance of link module
  * @connector: double pointer to display connector
+ * @minor: pointer to drm minor number after device registration
  * return: pointer to allocated debug module data
  *
  * This function sets up the debug module and provides a way
@@ -42,7 +43,9 @@ struct dp_debug {
  */
 struct dp_debug *dp_debug_get(struct device *dev, struct dp_panel *panel,
 		struct dp_usbpd *usbpd, struct dp_link *link,
-		struct drm_connector **connector);
+		struct drm_connector **connector,
+		struct drm_minor *minor);
+
 /**
  * dp_debug_put()
  *
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index bcebde784570..646303fc2935 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -229,10 +229,8 @@ static int dp_display_bind(struct device *dev, struct device *master,
 	}
 
 	rc = dp_register_audio_driver(dev, dp->audio);
-	if (rc) {
+	if (rc)
 		DRM_ERROR("Audio registration Dp failed\n");
-		goto end;
-	}
 
 end:
 	return rc;
@@ -773,19 +771,8 @@ static int dp_init_sub_modules(struct dp_display_private *dp)
 		goto error_audio;
 	}
 
-	dp->debug = dp_debug_get(dev, dp->panel, dp->usbpd,
-			dp->link, &dp->dp_display.connector);
-	if (IS_ERR(dp->debug)) {
-		rc = PTR_ERR(dp->debug);
-		DRM_ERROR("failed to initialize debug, rc = %d\n", rc);
-		dp->debug = NULL;
-		goto error_debug;
-	}
-
 	return rc;
 
-error_debug:
-	dp_audio_put(dp->audio);
 error_audio:
 	dp_ctrl_put(dp->ctrl);
 error_ctrl:
@@ -1299,6 +1286,25 @@ void msm_dp_irq_postinstall(struct msm_dp *dp_display)
 	dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 100);
 }
 
+void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor)
+{
+	struct dp_display_private *dp;
+	struct device *dev;
+	int rc;
+
+	dp = container_of(dp_display, struct dp_display_private, dp_display);
+	dev = &dp->pdev->dev;
+
+	dp->debug = dp_debug_get(dev, dp->panel, dp->usbpd,
+					dp->link, &dp->dp_display.connector,
+					minor);
+	if (IS_ERR(dp->debug)) {
+		rc = PTR_ERR(dp->debug);
+		DRM_ERROR("failed to initialize debug, rc = %d\n", rc);
+		dp->debug = NULL;
+	}
+}
+
 int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
 			struct drm_encoder *encoder)
 {
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index d30b2a2e25ec..0311a4f8bbe2 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -390,6 +390,8 @@ void msm_dp_display_mode_set(struct msm_dp *dp, struct drm_encoder *encoder,
 				struct drm_display_mode *adjusted_mode);
 void msm_dp_irq_postinstall(struct msm_dp *dp_display);
 
+void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor);
+
 #else
 static inline int __init msm_dp_register(void)
 {
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH v2 2/4] drm/msm/dp: move debugfs node to /sys/kernel/debug/dri/*/

[Abhinav Kumar]

Move the MSM DP debugfs node from /sys/kernel/debug/drm_dp
to /sys/kernel/debug/dri/*/ as required for video pattern
compliance test suite.

Changes in v2: rebase on top of latest patchset of dependency

Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c |  7 +++++
 drivers/gpu/drm/msm/dp/dp_debug.c       | 31 ++++++++--------------
 drivers/gpu/drm/msm/dp/dp_debug.h       |  5 +++-
 drivers/gpu/drm/msm/dp/dp_display.c     | 34 +++++++++++++++----------
 drivers/gpu/drm/msm/msm_drv.h           |  2 ++
 5 files changed, 44 insertions(+), 35 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index bcb5ee50568c..db9e2761085b 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -195,10 +195,15 @@ static int dpu_kms_debugfs_init(struct msm_kms *kms, struct drm_minor *minor)
 	struct dpu_kms *dpu_kms = to_dpu_kms(kms);
 	void *p = dpu_hw_util_get_log_mask_ptr();
 	struct dentry *entry;
+	struct drm_device *dev;
+	struct msm_drm_private *priv;
 
 	if (!p)
 		return -EINVAL;
 
+	dev = dpu_kms->dev;
+	priv = dev->dev_private;
+
 	entry = debugfs_create_dir("debug", minor->debugfs_root);
 
 	debugfs_create_x32(DPU_DEBUGFS_HWMASKNAME, 0600, entry, p);
@@ -207,6 +212,8 @@ static int dpu_kms_debugfs_init(struct msm_kms *kms, struct drm_minor *minor)
 	dpu_debugfs_vbif_init(dpu_kms, entry);
 	dpu_debugfs_core_irq_init(dpu_kms, entry);
 
+	msm_dp_debugfs_init(priv->dp, minor);
+
 	return dpu_core_perf_debugfs_init(dpu_kms, entry);
 }
 #endif
diff --git a/drivers/gpu/drm/msm/dp/dp_debug.c b/drivers/gpu/drm/msm/dp/dp_debug.c
index 92019f3e1a1f..099e989f214d 100644
--- a/drivers/gpu/drm/msm/dp/dp_debug.c
+++ b/drivers/gpu/drm/msm/dp/dp_debug.c
@@ -7,6 +7,7 @@
 
 #include <linux/debugfs.h>
 #include <drm/drm_connector.h>
+#include <drm/drm_file.h>
 
 #include "dp_parser.h"
 #include "dp_catalog.h"
@@ -15,7 +16,7 @@
 #include "dp_debug.h"
 #include "dp_display.h"
 
-#define DEBUG_NAME "drm_dp"
+#define DEBUG_NAME "msm_dp"
 
 struct dp_debug_private {
 	struct dentry *root;
@@ -25,6 +26,7 @@ struct dp_debug_private {
 	struct dp_panel *panel;
 	struct drm_connector **connector;
 	struct device *dev;
+	struct drm_device *drm_dev;
 
 	struct dp_debug dp_debug;
 };
@@ -206,41 +208,29 @@ static const struct file_operations dp_debug_fops = {
 	.read = dp_debug_read_info,
 };
 
-static int dp_debug_init(struct dp_debug *dp_debug)
+static int dp_debug_init(struct dp_debug *dp_debug, struct drm_minor *minor)
 {
 	int rc = 0;
 	struct dp_debug_private *debug = container_of(dp_debug,
 			struct dp_debug_private, dp_debug);
-	struct dentry *dir, *file;
+	struct dentry *file;
 
-	dir = debugfs_create_dir(DEBUG_NAME, NULL);
-	if (IS_ERR_OR_NULL(dir)) {
-		rc = PTR_ERR(dir);
-		DRM_ERROR("[%s] debugfs create dir failed, rc = %d\n",
-				  DEBUG_NAME, rc);
-		goto error;
-	}
-
-	file = debugfs_create_file("dp_debug", 0444, dir,
+	file = debugfs_create_file("dp_debug", 0444, minor->debugfs_root,
 			debug, &dp_debug_fops);
 	if (IS_ERR_OR_NULL(file)) {
 		rc = PTR_ERR(file);
 		DRM_ERROR("[%s] debugfs create file failed, rc=%d\n",
 				  DEBUG_NAME, rc);
-		goto error_remove_dir;
 	}
 
-	debug->root = dir;
-	return rc;
- error_remove_dir:
-	debugfs_remove(dir);
- error:
+	debug->root = minor->debugfs_root;
+
 	return rc;
 }
 
 struct dp_debug *dp_debug_get(struct device *dev, struct dp_panel *panel,
 		struct dp_usbpd *usbpd, struct dp_link *link,
-		struct drm_connector **connector)
+		struct drm_connector **connector, struct drm_minor *minor)
 {
 	int rc = 0;
 	struct dp_debug_private *debug;
@@ -263,6 +253,7 @@ struct dp_debug *dp_debug_get(struct device *dev, struct dp_panel *panel,
 	debug->link = link;
 	debug->panel = panel;
 	debug->dev = dev;
+	debug->drm_dev = minor->dev;
 	debug->connector = connector;
 
 	dp_debug = &debug->dp_debug;
@@ -270,7 +261,7 @@ struct dp_debug *dp_debug_get(struct device *dev, struct dp_panel *panel,
 	dp_debug->hdisplay = 0;
 	dp_debug->vrefresh = 0;
 
-	rc = dp_debug_init(dp_debug);
+	rc = dp_debug_init(dp_debug, minor);
 	if (rc) {
 		devm_kfree(dev, debug);
 		goto error;
diff --git a/drivers/gpu/drm/msm/dp/dp_debug.h b/drivers/gpu/drm/msm/dp/dp_debug.h
index fddf827ac089..377e166fd0ea 100644
--- a/drivers/gpu/drm/msm/dp/dp_debug.h
+++ b/drivers/gpu/drm/msm/dp/dp_debug.h
@@ -35,6 +35,7 @@ struct dp_debug {
  * @usbpd: instance of usbpd module
  * @link: instance of link module
  * @connector: double pointer to display connector
+ * @minor: pointer to drm minor number after device registration
  * return: pointer to allocated debug module data
  *
  * This function sets up the debug module and provides a way
@@ -42,7 +43,9 @@ struct dp_debug {
  */
 struct dp_debug *dp_debug_get(struct device *dev, struct dp_panel *panel,
 		struct dp_usbpd *usbpd, struct dp_link *link,
-		struct drm_connector **connector);
+		struct drm_connector **connector,
+		struct drm_minor *minor);
+
 /**
  * dp_debug_put()
  *
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index bcebde784570..646303fc2935 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -229,10 +229,8 @@ static int dp_display_bind(struct device *dev, struct device *master,
 	}
 
 	rc = dp_register_audio_driver(dev, dp->audio);
-	if (rc) {
+	if (rc)
 		DRM_ERROR("Audio registration Dp failed\n");
-		goto end;
-	}
 
 end:
 	return rc;
@@ -773,19 +771,8 @@ static int dp_init_sub_modules(struct dp_display_private *dp)
 		goto error_audio;
 	}
 
-	dp->debug = dp_debug_get(dev, dp->panel, dp->usbpd,
-			dp->link, &dp->dp_display.connector);
-	if (IS_ERR(dp->debug)) {
-		rc = PTR_ERR(dp->debug);
-		DRM_ERROR("failed to initialize debug, rc = %d\n", rc);
-		dp->debug = NULL;
-		goto error_debug;
-	}
-
 	return rc;
 
-error_debug:
-	dp_audio_put(dp->audio);
 error_audio:
 	dp_ctrl_put(dp->ctrl);
 error_ctrl:
@@ -1299,6 +1286,25 @@ void msm_dp_irq_postinstall(struct msm_dp *dp_display)
 	dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 100);
 }
 
+void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor)
+{
+	struct dp_display_private *dp;
+	struct device *dev;
+	int rc;
+
+	dp = container_of(dp_display, struct dp_display_private, dp_display);
+	dev = &dp->pdev->dev;
+
+	dp->debug = dp_debug_get(dev, dp->panel, dp->usbpd,
+					dp->link, &dp->dp_display.connector,
+					minor);
+	if (IS_ERR(dp->debug)) {
+		rc = PTR_ERR(dp->debug);
+		DRM_ERROR("failed to initialize debug, rc = %d\n", rc);
+		dp->debug = NULL;
+	}
+}
+
 int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
 			struct drm_encoder *encoder)
 {
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index d30b2a2e25ec..0311a4f8bbe2 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -390,6 +390,8 @@ void msm_dp_display_mode_set(struct msm_dp *dp, struct drm_encoder *encoder,
 				struct drm_display_mode *adjusted_mode);
 void msm_dp_irq_postinstall(struct msm_dp *dp_display);
 
+void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor);
+
 #else
 static inline int __init msm_dp_register(void)
 {
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[PATCH v2 3/4] drm/msm/dp: add debugfs nodes for video pattern tests

[Abhinav Kumar]

Add the debugfs nodes needed for the video pattern
compliance tests to MSM DP driver.

Changes in v2: rebase on top of latest patchset of dependency

Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
---
 drivers/gpu/drm/msm/dp/dp_debug.c | 184 ++++++++++++++++++++++++++++++
 drivers/gpu/drm/msm/dp/dp_link.h  |  23 ++++
 2 files changed, 207 insertions(+)

diff --git a/drivers/gpu/drm/msm/dp/dp_debug.c b/drivers/gpu/drm/msm/dp/dp_debug.c
index 099e989f214d..16861aade93b 100644
--- a/drivers/gpu/drm/msm/dp/dp_debug.c
+++ b/drivers/gpu/drm/msm/dp/dp_debug.c
@@ -203,17 +203,174 @@ static ssize_t dp_debug_read_info(struct file *file, char __user *user_buff,
 	return -EINVAL;
 }
 
+static int dp_test_data_show(struct seq_file *m, void *data)
+{
+	struct drm_device *dev;
+	struct dp_debug_private *debug;
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	u32 bpc;
+
+	debug = m->private;
+	dev = debug->drm_dev;
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+
+		if (connector->connector_type !=
+			DRM_MODE_CONNECTOR_DisplayPort)
+			continue;
+
+		if (connector->status == connector_status_connected) {
+			bpc = debug->link->test_video.test_bit_depth;
+			seq_printf(m, "hdisplay: %d\n",
+					debug->link->test_video.test_h_width);
+			seq_printf(m, "vdisplay: %d\n",
+					debug->link->test_video.test_v_height);
+					seq_printf(m, "bpc: %u\n",
+					dp_link_bit_depth_to_bpc(bpc));
+		} else
+			seq_puts(m, "0");
+	}
+
+	drm_connector_list_iter_end(&conn_iter);
+
+	return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(dp_test_data);
+
+static int dp_test_type_show(struct seq_file *m, void *data)
+{
+	struct dp_debug_private *debug = m->private;
+	struct drm_device *dev = debug->drm_dev;
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+
+		if (connector->connector_type !=
+			DRM_MODE_CONNECTOR_DisplayPort)
+			continue;
+
+		if (connector->status == connector_status_connected)
+			seq_printf(m, "%02lx", DP_TEST_LINK_VIDEO_PATTERN);
+		else
+			seq_puts(m, "0");
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(dp_test_type);
+
+static ssize_t dp_test_active_write(struct file *file,
+		const char __user *ubuf,
+		size_t len, loff_t *offp)
+{
+	char *input_buffer;
+	int status = 0;
+	struct dp_debug_private *debug;
+	struct drm_device *dev;
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	int val = 0;
+
+	debug = ((struct seq_file *)file->private_data)->private;
+	dev = debug->drm_dev;
+
+	if (len == 0)
+		return 0;
+
+	input_buffer = memdup_user_nul(ubuf, len);
+	if (IS_ERR(input_buffer))
+		return PTR_ERR(input_buffer);
+
+	DRM_DEBUG_DRIVER("Copied %d bytes from user\n", (unsigned int)len);
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		if (connector->connector_type !=
+			DRM_MODE_CONNECTOR_DisplayPort)
+			continue;
+
+		if (connector->status == connector_status_connected) {
+			status = kstrtoint(input_buffer, 10, &val);
+			if (status < 0)
+				break;
+			DRM_DEBUG_DRIVER("Got %d for test active\n", val);
+			/* To prevent erroneous activation of the compliance
+			 * testing code, only accept an actual value of 1 here
+			 */
+			if (val == 1)
+				debug->panel->video_test = true;
+			else
+				debug->panel->video_test = false;
+		}
+	}
+	drm_connector_list_iter_end(&conn_iter);
+	kfree(input_buffer);
+	if (status < 0)
+		return status;
+
+	*offp += len;
+	return len;
+}
+
+static int dp_test_active_show(struct seq_file *m, void *data)
+{
+	struct dp_debug_private *debug = m->private;
+	struct drm_device *dev = debug->drm_dev;
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		if (connector->connector_type !=
+			DRM_MODE_CONNECTOR_DisplayPort)
+			continue;
+
+		if (connector->status == connector_status_connected) {
+			if (debug->panel->video_test)
+				seq_puts(m, "1");
+			else
+				seq_puts(m, "0");
+		} else
+			seq_puts(m, "0");
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	return 0;
+}
+
+static int dp_test_active_open(struct inode *inode,
+		struct file *file)
+{
+	return single_open(file, dp_test_active_show,
+			inode->i_private);
+}
+
 static const struct file_operations dp_debug_fops = {
 	.open = simple_open,
 	.read = dp_debug_read_info,
 };
 
+static const struct file_operations test_active_fops = {
+	.owner = THIS_MODULE,
+	.open = dp_test_active_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.write = dp_test_active_write
+};
+
 static int dp_debug_init(struct dp_debug *dp_debug, struct drm_minor *minor)
 {
 	int rc = 0;
 	struct dp_debug_private *debug = container_of(dp_debug,
 			struct dp_debug_private, dp_debug);
 	struct dentry *file;
+	struct dentry *test_active;
+	struct dentry *test_data, *test_type;
 
 	file = debugfs_create_file("dp_debug", 0444, minor->debugfs_root,
 			debug, &dp_debug_fops);
@@ -223,6 +380,33 @@ static int dp_debug_init(struct dp_debug *dp_debug, struct drm_minor *minor)
 				  DEBUG_NAME, rc);
 	}
 
+	test_active = debugfs_create_file("msm_dp_test_active", 0444,
+			minor->debugfs_root,
+			debug, &test_active_fops);
+	if (IS_ERR_OR_NULL(test_active)) {
+		rc = PTR_ERR(test_active);
+		DRM_ERROR("[%s] debugfs test_active failed, rc=%d\n",
+				  DEBUG_NAME, rc);
+	}
+
+	test_data = debugfs_create_file("msm_dp_test_data", 0444,
+			minor->debugfs_root,
+			debug, &dp_test_data_fops);
+	if (IS_ERR_OR_NULL(test_data)) {
+		rc = PTR_ERR(test_data);
+		DRM_ERROR("[%s] debugfs test_data failed, rc=%d\n",
+				  DEBUG_NAME, rc);
+	}
+
+	test_type = debugfs_create_file("msm_dp_test_type", 0444,
+			minor->debugfs_root,
+			debug, &dp_test_type_fops);
+	if (IS_ERR_OR_NULL(test_type)) {
+		rc = PTR_ERR(test_type);
+		DRM_ERROR("[%s] debugfs test_type failed, rc=%d\n",
+				  DEBUG_NAME, rc);
+	}
+
 	debug->root = minor->debugfs_root;
 
 	return rc;
diff --git a/drivers/gpu/drm/msm/dp/dp_link.h b/drivers/gpu/drm/msm/dp/dp_link.h
index e9d54db8fb61..49811b6221e5 100644
--- a/drivers/gpu/drm/msm/dp/dp_link.h
+++ b/drivers/gpu/drm/msm/dp/dp_link.h
@@ -112,6 +112,29 @@ static inline u32 dp_link_bit_depth_to_bpp(u32 tbd)
 	}
 }
 
+/**
+ * dp_test_bit_depth_to_bpc() - convert test bit depth to bpc
+ * @tbd: test bit depth
+ *
+ * Returns the bits per comp (bpc) to be used corresponding to the
+ * bit depth value. This function assumes that bit depth has
+ * already been validated.
+ */
+static inline u32 dp_link_bit_depth_to_bpc(u32 tbd)
+{
+	switch (tbd) {
+	case DP_TEST_BIT_DEPTH_6:
+		return 6;
+	case DP_TEST_BIT_DEPTH_8:
+		return 8;
+	case DP_TEST_BIT_DEPTH_10:
+		return 10;
+	case DP_TEST_BIT_DEPTH_UNKNOWN:
+	default:
+		return 0;
+	}
+}
+
 u32 dp_link_get_test_bits_depth(struct dp_link *dp_link, u32 bpp);
 int dp_link_process_request(struct dp_link *dp_link);
 int dp_link_get_colorimetry_config(struct dp_link *dp_link);
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH v2 3/4] drm/msm/dp: add debugfs nodes for video pattern tests

[Abhinav Kumar]

Add the debugfs nodes needed for the video pattern
compliance tests to MSM DP driver.

Changes in v2: rebase on top of latest patchset of dependency

Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
---
 drivers/gpu/drm/msm/dp/dp_debug.c | 184 ++++++++++++++++++++++++++++++
 drivers/gpu/drm/msm/dp/dp_link.h  |  23 ++++
 2 files changed, 207 insertions(+)

diff --git a/drivers/gpu/drm/msm/dp/dp_debug.c b/drivers/gpu/drm/msm/dp/dp_debug.c
index 099e989f214d..16861aade93b 100644
--- a/drivers/gpu/drm/msm/dp/dp_debug.c
+++ b/drivers/gpu/drm/msm/dp/dp_debug.c
@@ -203,17 +203,174 @@ static ssize_t dp_debug_read_info(struct file *file, char __user *user_buff,
 	return -EINVAL;
 }
 
+static int dp_test_data_show(struct seq_file *m, void *data)
+{
+	struct drm_device *dev;
+	struct dp_debug_private *debug;
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	u32 bpc;
+
+	debug = m->private;
+	dev = debug->drm_dev;
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+
+		if (connector->connector_type !=
+			DRM_MODE_CONNECTOR_DisplayPort)
+			continue;
+
+		if (connector->status == connector_status_connected) {
+			bpc = debug->link->test_video.test_bit_depth;
+			seq_printf(m, "hdisplay: %d\n",
+					debug->link->test_video.test_h_width);
+			seq_printf(m, "vdisplay: %d\n",
+					debug->link->test_video.test_v_height);
+					seq_printf(m, "bpc: %u\n",
+					dp_link_bit_depth_to_bpc(bpc));
+		} else
+			seq_puts(m, "0");
+	}
+
+	drm_connector_list_iter_end(&conn_iter);
+
+	return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(dp_test_data);
+
+static int dp_test_type_show(struct seq_file *m, void *data)
+{
+	struct dp_debug_private *debug = m->private;
+	struct drm_device *dev = debug->drm_dev;
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+
+		if (connector->connector_type !=
+			DRM_MODE_CONNECTOR_DisplayPort)
+			continue;
+
+		if (connector->status == connector_status_connected)
+			seq_printf(m, "%02lx", DP_TEST_LINK_VIDEO_PATTERN);
+		else
+			seq_puts(m, "0");
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(dp_test_type);
+
+static ssize_t dp_test_active_write(struct file *file,
+		const char __user *ubuf,
+		size_t len, loff_t *offp)
+{
+	char *input_buffer;
+	int status = 0;
+	struct dp_debug_private *debug;
+	struct drm_device *dev;
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	int val = 0;
+
+	debug = ((struct seq_file *)file->private_data)->private;
+	dev = debug->drm_dev;
+
+	if (len == 0)
+		return 0;
+
+	input_buffer = memdup_user_nul(ubuf, len);
+	if (IS_ERR(input_buffer))
+		return PTR_ERR(input_buffer);
+
+	DRM_DEBUG_DRIVER("Copied %d bytes from user\n", (unsigned int)len);
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		if (connector->connector_type !=
+			DRM_MODE_CONNECTOR_DisplayPort)
+			continue;
+
+		if (connector->status == connector_status_connected) {
+			status = kstrtoint(input_buffer, 10, &val);
+			if (status < 0)
+				break;
+			DRM_DEBUG_DRIVER("Got %d for test active\n", val);
+			/* To prevent erroneous activation of the compliance
+			 * testing code, only accept an actual value of 1 here
+			 */
+			if (val == 1)
+				debug->panel->video_test = true;
+			else
+				debug->panel->video_test = false;
+		}
+	}
+	drm_connector_list_iter_end(&conn_iter);
+	kfree(input_buffer);
+	if (status < 0)
+		return status;
+
+	*offp += len;
+	return len;
+}
+
+static int dp_test_active_show(struct seq_file *m, void *data)
+{
+	struct dp_debug_private *debug = m->private;
+	struct drm_device *dev = debug->drm_dev;
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		if (connector->connector_type !=
+			DRM_MODE_CONNECTOR_DisplayPort)
+			continue;
+
+		if (connector->status == connector_status_connected) {
+			if (debug->panel->video_test)
+				seq_puts(m, "1");
+			else
+				seq_puts(m, "0");
+		} else
+			seq_puts(m, "0");
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	return 0;
+}
+
+static int dp_test_active_open(struct inode *inode,
+		struct file *file)
+{
+	return single_open(file, dp_test_active_show,
+			inode->i_private);
+}
+
 static const struct file_operations dp_debug_fops = {
 	.open = simple_open,
 	.read = dp_debug_read_info,
 };
 
+static const struct file_operations test_active_fops = {
+	.owner = THIS_MODULE,
+	.open = dp_test_active_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.write = dp_test_active_write
+};
+
 static int dp_debug_init(struct dp_debug *dp_debug, struct drm_minor *minor)
 {
 	int rc = 0;
 	struct dp_debug_private *debug = container_of(dp_debug,
 			struct dp_debug_private, dp_debug);
 	struct dentry *file;
+	struct dentry *test_active;
+	struct dentry *test_data, *test_type;
 
 	file = debugfs_create_file("dp_debug", 0444, minor->debugfs_root,
 			debug, &dp_debug_fops);
@@ -223,6 +380,33 @@ static int dp_debug_init(struct dp_debug *dp_debug, struct drm_minor *minor)
 				  DEBUG_NAME, rc);
 	}
 
+	test_active = debugfs_create_file("msm_dp_test_active", 0444,
+			minor->debugfs_root,
+			debug, &test_active_fops);
+	if (IS_ERR_OR_NULL(test_active)) {
+		rc = PTR_ERR(test_active);
+		DRM_ERROR("[%s] debugfs test_active failed, rc=%d\n",
+				  DEBUG_NAME, rc);
+	}
+
+	test_data = debugfs_create_file("msm_dp_test_data", 0444,
+			minor->debugfs_root,
+			debug, &dp_test_data_fops);
+	if (IS_ERR_OR_NULL(test_data)) {
+		rc = PTR_ERR(test_data);
+		DRM_ERROR("[%s] debugfs test_data failed, rc=%d\n",
+				  DEBUG_NAME, rc);
+	}
+
+	test_type = debugfs_create_file("msm_dp_test_type", 0444,
+			minor->debugfs_root,
+			debug, &dp_test_type_fops);
+	if (IS_ERR_OR_NULL(test_type)) {
+		rc = PTR_ERR(test_type);
+		DRM_ERROR("[%s] debugfs test_type failed, rc=%d\n",
+				  DEBUG_NAME, rc);
+	}
+
 	debug->root = minor->debugfs_root;
 
 	return rc;
diff --git a/drivers/gpu/drm/msm/dp/dp_link.h b/drivers/gpu/drm/msm/dp/dp_link.h
index e9d54db8fb61..49811b6221e5 100644
--- a/drivers/gpu/drm/msm/dp/dp_link.h
+++ b/drivers/gpu/drm/msm/dp/dp_link.h
@@ -112,6 +112,29 @@ static inline u32 dp_link_bit_depth_to_bpp(u32 tbd)
 	}
 }
 
+/**
+ * dp_test_bit_depth_to_bpc() - convert test bit depth to bpc
+ * @tbd: test bit depth
+ *
+ * Returns the bits per comp (bpc) to be used corresponding to the
+ * bit depth value. This function assumes that bit depth has
+ * already been validated.
+ */
+static inline u32 dp_link_bit_depth_to_bpc(u32 tbd)
+{
+	switch (tbd) {
+	case DP_TEST_BIT_DEPTH_6:
+		return 6;
+	case DP_TEST_BIT_DEPTH_8:
+		return 8;
+	case DP_TEST_BIT_DEPTH_10:
+		return 10;
+	case DP_TEST_BIT_DEPTH_UNKNOWN:
+	default:
+		return 0;
+	}
+}
+
 u32 dp_link_get_test_bits_depth(struct dp_link *dp_link, u32 bpp);
 int dp_link_process_request(struct dp_link *dp_link);
 int dp_link_get_colorimetry_config(struct dp_link *dp_link);
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[PATCH v2 4/4] drm/msm/dp: remove mode hard-coding in case of DP CTS

[Abhinav Kumar]

No need to fix the number of resolutions to one during the video
pattern CTS test. The userspace test client will handle both
the hotplug as well as picking the right resolution for the test.

Changes in v2: rebase on top of latest patchset of dependency

Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
---
 drivers/gpu/drm/msm/dp/dp_display.c |  3 --
 drivers/gpu/drm/msm/dp/dp_link.c    |  2 +-
 drivers/gpu/drm/msm/dp/dp_panel.c   | 46 +----------------------------
 3 files changed, 2 insertions(+), 49 deletions(-)

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 646303fc2935..1fe951f3d676 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -426,10 +426,7 @@ static int dp_display_usbpd_disconnect_cb(struct device *dev)
 static void dp_display_handle_video_request(struct dp_display_private *dp)
 {
 	if (dp->link->sink_request & DP_TEST_LINK_VIDEO_PATTERN) {
-		/* force disconnect followed by connect */
-		dp->usbpd->connect(dp->usbpd, false);
 		dp->panel->video_test = true;
-		dp->usbpd->connect(dp->usbpd, true);
 		dp_link_send_test_response(dp->link);
 	}
 }
diff --git a/drivers/gpu/drm/msm/dp/dp_link.c b/drivers/gpu/drm/msm/dp/dp_link.c
index 3cbae92deff0..ac0e1daea913 100644
--- a/drivers/gpu/drm/msm/dp/dp_link.c
+++ b/drivers/gpu/drm/msm/dp/dp_link.c
@@ -1059,8 +1059,8 @@ int dp_link_process_request(struct dp_link *dp_link)
 	}
 
 	if (dp_link_is_video_pattern_requested(link)) {
+		ret = 0;
 		dp_link->sink_request |= DP_TEST_LINK_VIDEO_PATTERN;
-		return -EINVAL;
 	}
 
 	if (dp_link_is_audio_pattern_requested(link)) {
diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c b/drivers/gpu/drm/msm/dp/dp_panel.c
index 7cdf37c525d8..1515217395a4 100644
--- a/drivers/gpu/drm/msm/dp/dp_panel.c
+++ b/drivers/gpu/drm/msm/dp/dp_panel.c
@@ -128,46 +128,6 @@ static u32 dp_panel_get_supported_bpp(struct dp_panel *dp_panel,
 	return bpp;
 }
 
-static void dp_panel_set_test_mode(struct dp_panel_private *panel,
-		struct dp_display_mode *mode)
-{
-	struct drm_display_mode *drm_mode = NULL;
-	struct dp_link_test_video *test_info = NULL;
-
-	drm_mode = &mode->drm_mode;
-	test_info = &panel->link->test_video;
-
-	drm_mode->hdisplay = test_info->test_h_width;
-	drm_mode->hsync_start = drm_mode->hdisplay + test_info->test_h_total -
-			(test_info->test_h_start + test_info->test_h_width);
-	drm_mode->hsync_end = drm_mode->hsync_start +
-				test_info->test_hsync_width;
-	drm_mode->htotal = drm_mode->hsync_end + test_info->test_h_start -
-						test_info->test_hsync_width;
-
-	drm_mode->vdisplay = test_info->test_v_height;
-	drm_mode->vsync_start = drm_mode->vdisplay + test_info->test_v_total -
-			(test_info->test_v_start + test_info->test_v_height);
-	drm_mode->vsync_end = drm_mode->vsync_start +
-				test_info->test_vsync_width;
-	drm_mode->vtotal = drm_mode->vsync_end + test_info->test_v_start -
-						test_info->test_vsync_width;
-
-	drm_mode->clock = test_info->test_h_total *
-		test_info->test_v_total * test_info->test_rr_n;
-
-	drm_mode->type = 0x48;
-	drm_mode_set_name(drm_mode);
-
-	if (test_info->test_rr_d == 0)
-		drm_mode->clock /= 1000;
-	else
-		drm_mode->clock /= 1001;
-
-	if (test_info->test_h_width == 640)
-		drm_mode->clock = 25170;
-}
-
 static int dp_panel_update_modes(struct drm_connector *connector,
 	struct edid *edid)
 {
@@ -294,12 +254,8 @@ int dp_panel_get_modes(struct dp_panel *dp_panel,
 
 	panel = container_of(dp_panel, struct dp_panel_private, dp_panel);
 
-	if (dp_panel->video_test) {
-		dp_panel_set_test_mode(panel, mode);
-		return 1;
-	} else if (dp_panel->edid) {
+	if (dp_panel->edid)
 		return dp_panel_update_modes(connector, dp_panel->edid);
-	}
 
 	return 0;
 }
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH v2 4/4] drm/msm/dp: remove mode hard-coding in case of DP CTS

[Abhinav Kumar]

No need to fix the number of resolutions to one during the video
pattern CTS test. The userspace test client will handle both
the hotplug as well as picking the right resolution for the test.

Changes in v2: rebase on top of latest patchset of dependency

Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
---
 drivers/gpu/drm/msm/dp/dp_display.c |  3 --
 drivers/gpu/drm/msm/dp/dp_link.c    |  2 +-
 drivers/gpu/drm/msm/dp/dp_panel.c   | 46 +----------------------------
 3 files changed, 2 insertions(+), 49 deletions(-)

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 646303fc2935..1fe951f3d676 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -426,10 +426,7 @@ static int dp_display_usbpd_disconnect_cb(struct device *dev)
 static void dp_display_handle_video_request(struct dp_display_private *dp)
 {
 	if (dp->link->sink_request & DP_TEST_LINK_VIDEO_PATTERN) {
-		/* force disconnect followed by connect */
-		dp->usbpd->connect(dp->usbpd, false);
 		dp->panel->video_test = true;
-		dp->usbpd->connect(dp->usbpd, true);
 		dp_link_send_test_response(dp->link);
 	}
 }
diff --git a/drivers/gpu/drm/msm/dp/dp_link.c b/drivers/gpu/drm/msm/dp/dp_link.c
index 3cbae92deff0..ac0e1daea913 100644
--- a/drivers/gpu/drm/msm/dp/dp_link.c
+++ b/drivers/gpu/drm/msm/dp/dp_link.c
@@ -1059,8 +1059,8 @@ int dp_link_process_request(struct dp_link *dp_link)
 	}
 
 	if (dp_link_is_video_pattern_requested(link)) {
+		ret = 0;
 		dp_link->sink_request |= DP_TEST_LINK_VIDEO_PATTERN;
-		return -EINVAL;
 	}
 
 	if (dp_link_is_audio_pattern_requested(link)) {
diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c b/drivers/gpu/drm/msm/dp/dp_panel.c
index 7cdf37c525d8..1515217395a4 100644
--- a/drivers/gpu/drm/msm/dp/dp_panel.c
+++ b/drivers/gpu/drm/msm/dp/dp_panel.c
@@ -128,46 +128,6 @@ static u32 dp_panel_get_supported_bpp(struct dp_panel *dp_panel,
 	return bpp;
 }
 
-static void dp_panel_set_test_mode(struct dp_panel_private *panel,
-		struct dp_display_mode *mode)
-{
-	struct drm_display_mode *drm_mode = NULL;
-	struct dp_link_test_video *test_info = NULL;
-
-	drm_mode = &mode->drm_mode;
-	test_info = &panel->link->test_video;
-
-	drm_mode->hdisplay = test_info->test_h_width;
-	drm_mode->hsync_start = drm_mode->hdisplay + test_info->test_h_total -
-			(test_info->test_h_start + test_info->test_h_width);
-	drm_mode->hsync_end = drm_mode->hsync_start +
-				test_info->test_hsync_width;
-	drm_mode->htotal = drm_mode->hsync_end + test_info->test_h_start -
-						test_info->test_hsync_width;
-
-	drm_mode->vdisplay = test_info->test_v_height;
-	drm_mode->vsync_start = drm_mode->vdisplay + test_info->test_v_total -
-			(test_info->test_v_start + test_info->test_v_height);
-	drm_mode->vsync_end = drm_mode->vsync_start +
-				test_info->test_vsync_width;
-	drm_mode->vtotal = drm_mode->vsync_end + test_info->test_v_start -
-						test_info->test_vsync_width;
-
-	drm_mode->clock = test_info->test_h_total *
-		test_info->test_v_total * test_info->test_rr_n;
-
-	drm_mode->type = 0x48;
-	drm_mode_set_name(drm_mode);
-
-	if (test_info->test_rr_d == 0)
-		drm_mode->clock /= 1000;
-	else
-		drm_mode->clock /= 1001;
-
-	if (test_info->test_h_width == 640)
-		drm_mode->clock = 25170;
-}
-
 static int dp_panel_update_modes(struct drm_connector *connector,
 	struct edid *edid)
 {
@@ -294,12 +254,8 @@ int dp_panel_get_modes(struct dp_panel *dp_panel,
 
 	panel = container_of(dp_panel, struct dp_panel_private, dp_panel);
 
-	if (dp_panel->video_test) {
-		dp_panel_set_test_mode(panel, mode);
-		return 1;
-	} else if (dp_panel->edid) {
+	if (dp_panel->edid)
 		return dp_panel_update_modes(connector, dp_panel->edid);
-	}
 
 	return 0;
 }
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

_______________________________________________
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dri-devel@lists.freedesktop.org
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