diff options
| author | Stylon Wang <stylon.wang@amd.com> | 2019-08-20 14:48:37 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-09-17 08:06:54 -0500 |
| commit | d4252eee1f7cde7f8b1673626d1b49498c1d4f77 (patch) | |
| tree | 3335d30c1cb7203b2fafd872dac052899455c121 /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | |
| parent | 747012382937e4b6eb34ba730e815f9da836e454 (diff) | |
drm/amd/display: Add debugfs entry to force YUV420 output
[Why]
Even if YUV420 is available for video mode, YUV444 is still
automatically selected. This poses a problem for compliance tests.
[How]
Add a per-connector debugfs entry "force_yuv420_output" to force
selection of YUV420 mode.
Signed-off-by: Stylon Wang <stylon.wang@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Leo Li <sunpeng.li@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 | 31 |
1 files changed, 31 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 f3dfb2887ae0..e29c6314f98c 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 @@ -942,6 +942,33 @@ static const struct { {"aux_dpcd_data", &dp_dpcd_data_debugfs_fops} }; +/* + * Force YUV420 output if available from the given mode + */ +static int force_yuv420_output_set(void *data, u64 val) +{ + struct amdgpu_dm_connector *connector = data; + + connector->force_yuv420_output = (bool)val; + + return 0; +} + +/* + * Check if YUV420 is forced when available from the given mode + */ +static int force_yuv420_output_get(void *data, u64 *val) +{ + struct amdgpu_dm_connector *connector = data; + + *val = connector->force_yuv420_output; + + return 0; +} + +DEFINE_DEBUGFS_ATTRIBUTE(force_yuv420_output_fops, force_yuv420_output_get, + force_yuv420_output_set, "%llu\n"); + void connector_debugfs_init(struct amdgpu_dm_connector *connector) { int i; @@ -955,6 +982,10 @@ void connector_debugfs_init(struct amdgpu_dm_connector *connector) dp_debugfs_entries[i].fops); } } + + debugfs_create_file_unsafe("force_yuv420_output", 0644, dir, connector, + &force_yuv420_output_fops); + } /* |