kernel/linux.git/drivers/gpu/drm/amd/display/dc/dce, branch v5.5.13

drm/amd/display: Check engine is not NULL before acquiring

2020-03-05T15:45:07+00:00

[ Upstream commit 2b63d0ec0daf79ba503fa8bfa25e07dc3da274f3 ] [Why] Engine can be NULL in some cases, so we must not acquire it. [How] Check for NULL engine before acquiring. Signed-off-by: Aric Cyr Reviewed-by: Harry Wentland Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amdgpu/display: add fallthrough comment

2019-12-05T23:24:16+00:00

To avoid a compiler warning. Reviewed-by: Zhan Liu Signed-off-by: Alex Deucher

drm/amd/display: Increase the number of retries after AUX DEFER

2019-12-05T23:23:43+00:00

[Why] When a timeout occurs after a DEFER, some devices require more retries than in the case of a regular timeout. [How] In a timeout occurrence, check whether a DEFER has occurred before the timeout and retry MAX_DEFER_RETRIES retries times instead of MAX_TIMEOUT_RETRIES. Signed-off-by: George Shen Reviewed-by: Tony Cheng Acked-by: Abdoulaye Berthe Acked-by: Leo Li Signed-off-by: Alex Deucher

drm/amd/display: remove gcc warning Wunused-but-set-variable

2019-10-28T15:19:00+00:00

drivers/gpu/drm/amd/display/dc/dce/dce_aux.c: In function dce_aux_configure_timeout: drivers/gpu/drm/amd/display/dc/dce/dce_aux.c: warning: variable timeout set but not used [-Wunused-but-set-variable] Signed-off-by: Chenwandun Signed-off-by: Alex Deucher

drm/amdgpu: Add DC feature mask to disable fractional pwm

2019-10-25T20:50:10+00:00

[Why] Some LED panel drivers might not like fractional PWM. In such cases, backlight flickering may be observed. [How] Add a DC feature mask to disable fractional PWM, and associate it with the preexisting dc_config flag. The flag is only plumbed through the dmcu firmware, so plumb it through the driver path as well. To disable, add the following to the linux cmdline: amdgpu.dcfeaturemask=0x4 Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=204957 Signed-off-by: Leo Li Reviewed-by: Anthony Koo Tested-by: Lukáš Krejčí Signed-off-by: Alex Deucher

drm/amd/display: Proper return of result when aux engine acquire fails

2019-10-25T20:50:09+00:00

[Why] When aux engine acquire fails, we missed populating the operation_result that describes the failure reason. [How] Set operation_result to new type: AUX_CHANNEL_OPERATION_FAILED_ENGINE_ACQUIRE in the case aux engine acquire has failed. Signed-off-by: Anthony Koo Reviewed-by: Aric Cyr Acked-by: Leo Li Signed-off-by: Alex Deucher

drm/amd/display: Add renoir hw_seq

2019-10-17T20:27:34+00:00

This change adds renoir hw_seq, needed to do renoir specific hw programing Signed-off-by: Bhawanpreet Lakha Reviewed-by: Roman Li Signed-off-by: Alex Deucher

drm/amd/display: configurable aux timeout support

2019-10-17T20:24:56+00:00

[Description] 1-add configurable timeout support to aux engine. 2-add timeout support field to dc_caps 3-add reg_key to override extended timeout support Signed-off-by: abdoulaye berthe Acked-by: Bhawanpreet Lakha Reviewed-by: Roman Li Signed-off-by: Alex Deucher

drm/amd/display: update register field access mechanism

2019-10-17T20:24:34+00:00

1-add timeout length and multiplier fields to aux_control1 register 2-update access mechanism from macro constructed name to uint32_t defined addresses. 3-define registers and field per asic family Signed-off-by: abdoulaye berthe Acked-by: Bhawanpreet Lakha Reviewed-by: Roman Li Signed-off-by: Alex Deucher

drm/amd/display: make aux defer delay and aux sw start delay seperate

2019-10-11T00:34:06+00:00

[why] 1. defer delay and sw start delay has been mixed up, defer delay was programmed to AUX_SW_CONTROL:AUX_SW_START_DELAY. 2. There's no delay for defer [how] 1. Set aux sw start to 0 2. Add delay for defer scenario Signed-off-by: Xiaodong Yan Reviewed-by: Tony Cheng Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher