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Commit ecbd6781 authored by David Weinehall's avatar David Weinehall Committed by Chris Wilson
Browse files

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: default avatarDavid Weinehall <david.weinehall@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20160823092356.7610-1-david.weinehall@linux.intel.com


Reviewed-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
parent 4cc69075

drivers/gpu/drm/i915/i915_debugfs.c

+40 −2
Original line number Diff line number Diff line
@@ -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;

}