diff options
| author | Shirish S <shirish.s@amd.com> | 2023-03-10 11:54:17 +0530 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-03-13 17:27:48 -0400 |
| commit | 22f1482aff4aee39e5f3354808bc099084c2b64b (patch) | |
| tree | 46fca15afc18f251fed4c2796a007066e607b2c8 /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | |
| parent | dcaf5000b054935780db718ecff8cafe6c183df8 (diff) | |
| download | linux-22f1482aff4aee39e5f3354808bc099084c2b64b.tar.gz linux-22f1482aff4aee39e5f3354808bc099084c2b64b.tar.bz2 linux-22f1482aff4aee39e5f3354808bc099084c2b64b.zip | |
drm/amd/display: add sysfs entry to read PSR residency from firmware
[Why]
Currently there aren't any methods to determine PSR state residency.
[How]
create a sysfs entry for reading residency and internally hook it up
to existing functionality of reading PSR residency from firmware.
[Hamza: dropped the link.h include and made checkpatch happy]
Signed-off-by: Shirish S <shirish.s@amd.com>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c index abf7895d1608..f669f8a16c20 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c @@ -2794,6 +2794,22 @@ static int psr_get(void *data, u64 *val) } /* + * Read PSR state residency + */ +static int psr_read_residency(void *data, u64 *val) +{ + struct amdgpu_dm_connector *connector = data; + struct dc_link *link = connector->dc_link; + u32 residency; + + link_get_psr_residency(link, &residency); + + *val = (u64)residency; + + return 0; +} + +/* * Set dmcub trace event IRQ enable or disable. * Usage to enable dmcub trace event IRQ: echo 1 > /sys/kernel/debug/dri/0/amdgpu_dm_dmcub_trace_event_en * Usage to disable dmcub trace event IRQ: echo 0 > /sys/kernel/debug/dri/0/amdgpu_dm_dmcub_trace_event_en @@ -2828,6 +2844,8 @@ DEFINE_DEBUGFS_ATTRIBUTE(dmcub_trace_event_state_fops, dmcub_trace_event_state_g dmcub_trace_event_state_set, "%llu\n"); DEFINE_DEBUGFS_ATTRIBUTE(psr_fops, psr_get, NULL, "%llu\n"); +DEFINE_DEBUGFS_ATTRIBUTE(psr_residency_fops, psr_read_residency, NULL, + "%llu\n"); DEFINE_SHOW_ATTRIBUTE(current_backlight); DEFINE_SHOW_ATTRIBUTE(target_backlight); @@ -2991,6 +3009,8 @@ void connector_debugfs_init(struct amdgpu_dm_connector *connector) if (connector->base.connector_type == DRM_MODE_CONNECTOR_eDP) { debugfs_create_file_unsafe("psr_capability", 0444, dir, connector, &psr_capability_fops); debugfs_create_file_unsafe("psr_state", 0444, dir, connector, &psr_fops); + debugfs_create_file_unsafe("psr_residency", 0444, dir, + connector, &psr_residency_fops); debugfs_create_file("amdgpu_current_backlight_pwm", 0444, dir, connector, ¤t_backlight_fops); debugfs_create_file("amdgpu_target_backlight_pwm", 0444, dir, connector, |