UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/i915/debugfs: Add panel delays for eDP 

The eDP backlight and panel enable/disable delays are quite
useful to know when measuring time consumed by suspend/resume,
and while the information is printed to the kernel log as debug
messages, having this information in debugfs makes things easier.

Signed-off-by: David Weinehall <david.weinehall@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20160823092356.7610-1-david.weinehall@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
David Weinehall 2016-08-23 12:23:56 +03:00 committed by Chris Wilson
parent 4cc6907501
commit ecbd6781b2
1 changed files with 40 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
drivers/gpu/drm/i915/i915_debugfs.c
View File

@ -5465,6 +5465,40 @@ static const struct file_operations i915_dpcd_fops = {
.release = single_release,
};
static int i915_panel_show(struct seq_file *m, void *data)
{
struct drm_connector *connector = m->private;
struct intel_dp *intel_dp =
enc_to_intel_dp(&intel_attached_encoder(connector)->base);
if (connector->status != connector_status_connected)
return -ENODEV;
seq_printf(m, "Panel power up delay: %d\n",
intel_dp->panel_power_up_delay);
seq_printf(m, "Panel power down delay: %d\n",
intel_dp->panel_power_down_delay);
seq_printf(m, "Backlight on delay: %d\n",
intel_dp->backlight_on_delay);
seq_printf(m, "Backlight off delay: %d\n",
intel_dp->backlight_off_delay);
return 0;
}
static int i915_panel_open(struct inode *inode, struct file *file)
{
return single_open(file, i915_panel_show, inode->i_private);
}
static const struct file_operations i915_panel_fops = {
.owner = THIS_MODULE,
.open = i915_panel_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/**
* i915_debugfs_connector_add - add i915 specific connector debugfs files
* @connector: pointer to a registered drm_connector
@ -5484,8 +5518,12 @@ int i915_debugfs_connector_add(struct drm_connector *connector)
if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
connector->connector_type == DRM_MODE_CONNECTOR_eDP)
debugfs_create_file("i915_dpcd", S_IRUGO, root, connector,
&i915_dpcd_fops);
debugfs_create_file("i915_dpcd", S_IRUGO, root,
connector, &i915_dpcd_fops);
if (connector->connector_type == DRM_MODE_CONNECTOR_eDP)
debugfs_create_file("i915_panel_timings", S_IRUGO, root,
connector, &i915_panel_fops);
return 0;
}