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path: root/drivers/gpu/drm/msm/dp/dp_debug.c
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Diffstat (limited to 'drivers/gpu/drm/msm/dp/dp_debug.c')
-rw-r--r--drivers/gpu/drm/msm/dp/dp_debug.c294
1 files changed, 69 insertions, 225 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_debug.c b/drivers/gpu/drm/msm/dp/dp_debug.c
index 2f6247e80e9d..da4323556ef3 100644
--- a/drivers/gpu/drm/msm/dp/dp_debug.c
+++ b/drivers/gpu/drm/msm/dp/dp_debug.c
@@ -24,240 +24,108 @@ struct dp_debug_private {
struct dp_usbpd *usbpd;
struct dp_link *link;
struct dp_panel *panel;
- struct drm_connector **connector;
+ struct drm_connector *connector;
struct device *dev;
struct drm_device *drm_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)
+static int dp_debug_show(struct seq_file *seq, void *p)
{
- struct dp_debug_private *debug = file->private_data;
- char *buf;
- u32 len = 0, rc = 0;
+ struct dp_debug_private *debug = seq->private;
u64 lclk = 0;
- u32 max_size = SZ_4K;
u32 link_params_rate;
- struct drm_display_mode *drm_mode;
+ const 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",
+ seq_printf(seq, "\tname = %s\n", DEBUG_NAME);
+ seq_printf(seq, "\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",
+ seq_printf(seq, "\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",
+ seq_printf(seq, "\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",
+ seq_printf(seq, "\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",
+ seq_printf(seq, "\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",
+ seq_printf(seq, "\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",
+ seq_printf(seq, "\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",
+ seq_printf(seq, "\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",
+ seq_printf(seq, "\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",
+ seq_printf(seq, "\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",
+ seq_printf(seq, "\t\trefresh rate = %d\n",
drm_mode_vrefresh(drm_mode));
- if (dp_debug_check_buffer_overflow(rc, &max_size, &len))
- goto error;
-
- rc = snprintf(buf + len, max_size,
- "\t\tpixel clock khz = %d\n",
+ seq_printf(seq, "\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",
+ seq_printf(seq, "\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",
+ seq_printf(seq, "\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",
+ seq_printf(seq, "\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",
+ seq_printf(seq, "\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",
+ seq_printf(seq, "\t\tlclk = %lld\n", lclk);
+ seq_printf(seq, "\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",
+ seq_printf(seq, "\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;
+ return 0;
}
+DEFINE_SHOW_ATTRIBUTE(dp_debug);
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;
+ const struct dp_debug_private *debug = m->private;
+ const struct drm_connector *connector = debug->connector;
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");
+ 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;
+ const struct dp_debug_private *debug = m->private;
+ const struct drm_connector *connector = debug->connector;
- 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, "%02x", DP_TEST_LINK_VIDEO_PATTERN);
- else
- seq_puts(m, "0");
- }
- drm_connector_list_iter_end(&conn_iter);
+ if (connector->status == connector_status_connected)
+ seq_printf(m, "%02x", DP_TEST_LINK_VIDEO_PATTERN);
+ else
+ seq_puts(m, "0");
return 0;
}
@@ -269,14 +137,12 @@ static ssize_t dp_test_active_write(struct file *file,
{
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;
+ const struct dp_debug_private *debug;
+ const struct drm_connector *connector;
int val = 0;
debug = ((struct seq_file *)file->private_data)->private;
- dev = debug->drm_dev;
+ connector = debug->connector;
if (len == 0)
return 0;
@@ -287,30 +153,22 @@ static ssize_t dp_test_active_write(struct file *file,
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;
+ if (connector->status == connector_status_connected) {
+ status = kstrtoint(input_buffer, 10, &val);
+ if (status < 0) {
+ kfree(input_buffer);
+ return status;
}
+ 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;
@@ -319,25 +177,16 @@ static ssize_t dp_test_active_write(struct file *file,
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
+ struct drm_connector *connector = debug->connector;
+
+ 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;
}
@@ -349,11 +198,6 @@ static int dp_test_active_open(struct inode *inode,
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,
@@ -391,7 +235,7 @@ static int dp_debug_init(struct dp_debug *dp_debug, struct drm_minor *minor)
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_minor *minor)
+ struct drm_connector *connector, struct drm_minor *minor)
{
int rc = 0;
struct dp_debug_private *debug;
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-24 01:54:58 +0300