diff options
| author | Mikita Lipski <mikita.lipski@amd.com> | 2021-11-18 08:34:41 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-12-01 16:06:19 -0500 |
| commit | 7238b42e1f4009cde5c67c2c5f9d35d472240ffa (patch) | |
| tree | cb5ce25d62381e411014e14bf0d73a509cd69477 /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | |
| parent | b995747511f6d9f6d6f55bd094e3a5adeb36b55b (diff) | |
| download | linux-7238b42e1f4009cde5c67c2c5f9d35d472240ffa.tar.bz2 | |
drm/amd/display: PSR panel capability debugfs
[why]
Adding a debugfs to show PSR capability of the panel and the driver.
To use:
cat /sys/kernel/debug/dri/0/eDP-X/psr_capability
Expected output:
Sink support: no/yes
Driver support: no/yes
[how]
Adding psr_capability to eDP connectors.
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@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 | 44 |
1 files changed, 44 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 9d43ecb1f692..d7f8883cd4ff 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 @@ -824,6 +824,48 @@ static int dmub_fw_state_show(struct seq_file *m, void *data) return seq_write(m, state_base, state_size); } +/* psr_capability_show() - show eDP panel PSR capability + * + * The read function: sink_psr_capability_show + * Shows if sink has PSR capability or not. + * If yes - the PSR version is appended + * + * cat /sys/kernel/debug/dri/0/eDP-X/psr_capability + * + * Expected output: + * "Sink support: no\n" - if panel doesn't support PSR + * "Sink support: yes [0x01]\n" - if panel supports PSR1 + * "Driver support: no\n" - if driver doesn't support PSR + * "Driver support: yes [0x01]\n" - if driver supports PSR1 + */ +static int psr_capability_show(struct seq_file *m, void *data) +{ + struct drm_connector *connector = m->private; + struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector); + struct dc_link *link = aconnector->dc_link; + + if (!link) + return -ENODEV; + + if (link->type == dc_connection_none) + return -ENODEV; + + if (!(link->connector_signal & SIGNAL_TYPE_EDP)) + return -ENODEV; + + seq_printf(m, "Sink support: %s", yesno(link->dpcd_caps.psr_caps.psr_version != 0)); + if (link->dpcd_caps.psr_caps.psr_version) + seq_printf(m, " [0x%02x]", link->dpcd_caps.psr_caps.psr_version); + seq_puts(m, "\n"); + + seq_printf(m, "Driver support: %s", yesno(link->psr_settings.psr_feature_enabled)); + if (link->psr_settings.psr_version) + seq_printf(m, " [0x%02x]", link->psr_settings.psr_version); + seq_puts(m, "\n"); + + return 0; +} + /* * Returns the current and maximum output bpc for the connector. * Example usage: cat /sys/kernel/debug/dri/0/DP-1/output_bpc @@ -2467,6 +2509,7 @@ DEFINE_SHOW_ATTRIBUTE(dp_lttpr_status); DEFINE_SHOW_ATTRIBUTE(hdcp_sink_capability); #endif DEFINE_SHOW_ATTRIBUTE(internal_display); +DEFINE_SHOW_ATTRIBUTE(psr_capability); static const struct file_operations dp_dsc_clock_en_debugfs_fops = { .owner = THIS_MODULE, @@ -2726,6 +2769,7 @@ 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("amdgpu_current_backlight_pwm", 0444, dir, connector, ¤t_backlight_fops); |