diff options
| author | Eryk Brol <eryk.brol@amd.com> | 2020-08-14 14:50:19 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-09-15 17:52:41 -0400 |
| commit | 0749ddeb7d6c87e04446c068c03b097d4aa19173 (patch) | |
| tree | e2a10fcd5cb14d17896c941b952fe46d02cfa6ed /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | |
| parent | drm/amd/display: make dcn20 stream_gating use a pointer for dsc_pg_control (diff) | |
| download | linux-0749ddeb7d6c87e04446c068c03b097d4aa19173.tar.gz linux-0749ddeb7d6c87e04446c068c03b097d4aa19173.zip | |
drm/amd/display: Add DSC force disable to dsc_clock_en debugfs entry
[why]
For debug purposes we want not to enable DSC on certain connectors
even if algorithm deesires to do so, instead it should enable DSC
on other capable connectors or fail the atomic check.
[how]
Adding the third option to connector's debugfs entry dsc_clock_en.
Accepted inputs:
0x0 - connector is using default DSC enablement policy
0x1 - force enable DSC on the connector, if it supports DSC
0x2 - force disable DSC on the connector, if DSC is supported
Ex. # echo 0x2 > /sys/kernel/debug/dri/0/DP-1/dsc_clock_en
Signed-off-by: Eryk Brol <eryk.brol@amd.com>
Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@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 | 15 |
1 files changed, 12 insertions, 3 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 94fcb086154c..5cf3ba3ec5da 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 @@ -111,7 +111,6 @@ static int parse_write_buffer_into_params(char *wr_buf, uint32_t wr_buf_size, if (*param_nums > max_param_num) *param_nums = max_param_num; -; wr_buf_ptr = wr_buf; /* reset buf pointer */ wr_buf_count = 0; /* number of char already checked */ @@ -1200,9 +1199,14 @@ static ssize_t dp_dsc_clock_en_read(struct file *f, char __user *buf, * * The write function: dp_dsc_clock_en_write * enables to force DSC on the connector. - * User can write to either force enable DSC + * User can write to either force enable or force disable DSC * on the next modeset or set it to driver default * + * Accepted inputs: + * 0 - default DSC enablement policy + * 1 - force enable DSC on the connector + * 2 - force disable DSC on the connector (might cause fail in atomic_check) + * * Writing DSC settings is done with the following command: * - To force enable DSC (you need to specify * connector like DP-1): @@ -1262,7 +1266,12 @@ static ssize_t dp_dsc_clock_en_write(struct file *f, const char __user *buf, if (!pipe_ctx || !pipe_ctx->stream) goto done; - aconnector->dsc_settings.dsc_clock_en = param[0]; + if (param[0] == 1) + aconnector->dsc_settings.dsc_force_enable = DSC_CLK_FORCE_ENABLE; + else if (param[0] == 2) + aconnector->dsc_settings.dsc_force_enable = DSC_CLK_FORCE_DISABLE; + else + aconnector->dsc_settings.dsc_force_enable = DSC_CLK_FORCE_DEFAULT; done: kfree(wr_buf); |