diff options
| author | Zhongwei Zhang <Zhongwei.Zhang@amd.com> | 2025-05-13 16:45:59 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-06 11:04:22 +0200 |
| commit | 9b77a7d980c5564b8c1868b807be0ee6c4afc425 (patch) | |
| tree | 4a16af2c67705badf03856e3d9ca1288a9a58bcd | |
| parent | 1928feb197f2d7c4a45c16d58dff0d40673f66e7 (diff) | |
| download | linux-9b77a7d980c5564b8c1868b807be0ee6c4afc425.tar.gz linux-9b77a7d980c5564b8c1868b807be0ee6c4afc425.tar.bz2 linux-9b77a7d980c5564b8c1868b807be0ee6c4afc425.zip | |
drm/amd/display: Correct non-OLED pre_T11_delay.
commit 893f07452bca56ff146a6be02b3294a9ea23d18a upstream.
[Why]
Only OLED panels require non-zero pre_T11_delay defaultly.
Others should be controlled by power sequence.
[How]
For non OLED, pre_T11_delay delay in code should be zero.
Also post_T7_delay.
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Signed-off-by: Zhongwei Zhang <Zhongwei.Zhang@amd.com>
Signed-off-by: Wayne Lin <wayne.lin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c index 5656d10368ad..fb3a8c997569 100644 --- a/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c @@ -952,8 +952,8 @@ void dce110_edp_backlight_control( struct dc_context *ctx = link->ctx; struct bp_transmitter_control cntl = { 0 }; uint8_t pwrseq_instance = 0; - unsigned int pre_T11_delay = OLED_PRE_T11_DELAY; - unsigned int post_T7_delay = OLED_POST_T7_DELAY; + unsigned int pre_T11_delay = (link->dpcd_sink_ext_caps.bits.oled ? OLED_PRE_T11_DELAY : 0); + unsigned int post_T7_delay = (link->dpcd_sink_ext_caps.bits.oled ? OLED_POST_T7_DELAY : 0); if (dal_graphics_object_id_get_connector_id(link->link_enc->connector) != CONNECTOR_ID_EDP) { @@ -1069,7 +1069,8 @@ void dce110_edp_backlight_control( if (!enable) { /*follow oem panel config's requirement*/ pre_T11_delay += link->panel_config.pps.extra_pre_t11_ms; - msleep(pre_T11_delay); + if (pre_T11_delay) + msleep(pre_T11_delay); } } |