Commit ecfd1bc1 authored by Roman Li's avatar Roman Li Committed by Alex Deucher
Browse files

drm/amd/display: Add ips status info to debugfs 



[Why]
For debugging and testing purposes.

[How]
If IPS is supported create ips_status debugfs entry.
Usage: cat /sys/kernel/debug/dri/0/amdgpu_dm_ips_status

Reviewed-by: default avatarJerry Zuo <jerry.zuo@amd.com>
Acked-by: default avatarRoman Li <roman.li@amd.com>
Signed-off-by: default avatarRoman Li <roman.li@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent a329598e

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c

+47 −0
Original line number Diff line number Diff line
@@ -2670,6 +2670,49 @@ static ssize_t dp_max_bpc_write(struct file *f, const char __user *buf, 
	return size;

}



/*

 * IPS status.  Read only.

 *

 * Example usage: cat /sys/kernel/debug/dri/0/amdgpu_dm_ips_status

 */

static int ips_status_show(struct seq_file *m, void *unused)

{

	struct amdgpu_device *adev = m->private;

	struct dc *dc = adev->dm.dc;

	struct dc_dmub_srv *dc_dmub_srv;



	seq_printf(m, "IPS config: %d\n", dc->config.disable_ips);

	seq_printf(m, "Idle optimization: %d\n", dc->idle_optimizations_allowed);



	if (adev->dm.idle_workqueue) {

		seq_printf(m, "Idle workqueue - enabled: %d\n", adev->dm.idle_workqueue->enable);

		seq_printf(m, "Idle workqueue - running: %d\n", adev->dm.idle_workqueue->running);

	}



	dc_dmub_srv = dc->ctx->dmub_srv;

	if (dc_dmub_srv && dc_dmub_srv->dmub) {

		uint32_t rcg_count, ips1_count, ips2_count;

		volatile const struct dmub_shared_state_ips_fw *ips_fw =

			&dc_dmub_srv->dmub->shared_state[DMUB_SHARED_SHARE_FEATURE__IPS_FW].data.ips_fw;

		rcg_count = ips_fw->rcg_entry_count;

		ips1_count = ips_fw->ips1_entry_count;

		ips2_count = ips_fw->ips2_entry_count;

		seq_printf(m, "entry counts: rcg=%u ips1=%u ips2=%u\n",

			   rcg_count,

			   ips1_count,

			   ips2_count);

		rcg_count = ips_fw->rcg_exit_count;

		ips1_count = ips_fw->ips1_exit_count;

		ips2_count = ips_fw->ips2_exit_count;

		seq_printf(m, "exit counts: rcg=%u ips1=%u ips2=%u",

			   rcg_count,

			   ips1_count,

			   ips2_count);

		seq_puts(m, "\n");

	}

	return 0;

}



/*

 * Backlight at this moment.  Read only.

 * As written to display, taking ABM and backlight lut into account.
@@ -3240,6 +3283,7 @@ DEFINE_DEBUGFS_ATTRIBUTE(disallow_edp_enter_psr_fops, 


DEFINE_SHOW_ATTRIBUTE(current_backlight);

DEFINE_SHOW_ATTRIBUTE(target_backlight);

DEFINE_SHOW_ATTRIBUTE(ips_status);



static const struct {

	char *name;
@@ -4129,4 +4173,7 @@ void dtn_debugfs_init(struct amdgpu_device *adev) 
	debugfs_create_file_unsafe("amdgpu_dm_disable_hpd", 0644, root, adev,

				   &disable_hpd_ops);



	if (adev->dm.dc->caps.ips_support)

		debugfs_create_file_unsafe("amdgpu_dm_ips_status", 0644, root, adev,

					   &ips_status_fops);

}