user/sven/linux.git/drivers/gpu/drm/amd/display/modules/power, branch v5.4.36

drm/amd/display: set minimum abm backlight level

2019-12-31T15:43:34Z

[ Upstream commit 2ad0cdf9e2e9e079af34af681863fa638f2ee212 ] [Why] A lot of the time, the backlight characteristic curve maps min backlight to a non-zero value. But there are cases where we want the curve to intersect at 0. In this scenario even if OS never asks to set 0% backlight, the ABM reduction can result in backlight being lowered close to 0. This particularly can cause problems in some LED drivers, and in general just looks like backlight is completely off. [How] Add default cap to disallow backlight from dropping below 1% even after ABM reduction is applied. Signed-off-by: Anthony Koo Reviewed-by: Aric Cyr Acked-by: Leo Li Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amd/display: load iram for abm 2.3

2019-08-23T16:37:24Z

[Why] ABM 2.3 firmware expects information in iRAM that differs from previous versions of ABM, so a mechanism is required to provide it with that information. [How] Extend the existing iRAM definition to include parameters added by ABM 2.3, and load it if DMCU is running ABM 2.3. Signed-off-by: Josip Pavic Reviewed-by: Anthony Koo Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher

drm/amd/display: Add missing newline at end of file

2019-06-17T16:02:03Z

"git diff" says: \ No newline at end of file after modifying the file. Signed-off-by: Geert Uytterhoeven Signed-off-by: Alex Deucher

drm/amd/display: remove min reduction for abm 2.2 level 3

2019-04-10T18:53:28Z

[Why] Image brightness compensation for solid color full screen images is expected to be optimal for ABM 2.2 at level 3. The min reduction that is currently being enforced prevents this from being achieved. [How] Remove the min reduction for ABM 2.2 at level 3 Signed-off-by: Josip Pavic Reviewed-by: Anthony Koo Acked-by: Leo Li Signed-off-by: Alex Deucher

drm/amd/display: reduce abm min reduction, deviation gain and contrast factor

2019-03-19T20:36:49Z

[Why] Increased power savings are desired for ABM 2.2. [How] Reduce the minimum reduction level, the deviation gain and the contrast factor to allow for more aggressive operation of the algorithm. Signed-off-by: Josip Pavic Reviewed-by: Anthony Koo Acked-by: Leo Li Signed-off-by: Alex Deucher

drm/amd/display: Increase precision for backlight curve

2019-02-19T20:58:26Z

[Why] We are currently losing precision when we convert from 16 bit --> 8 bit --> 16 bit. [How] We shouldn't down convert unnecessarily and lose precision. Keep values at 16 bit and use directly. Signed-off-by: Anthony Koo Reviewed-by: Aric Cyr Acked-by: Leo Li Signed-off-by: Alex Deucher

drm/amd/display: Modify ABM 2.2 Max Reduction

2019-02-06T02:16:23Z

[Why] Reduced backlight for ABM 2.2 at levels 1 and 2 is desired for power savings. [How] Reduce the max reduction parameters for ABM 2.2 Signed-off-by: Josip Pavic Reviewed-by: Josip Pavic Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher

drm/amd/display: fix issue with DC brightness low with VB

2019-02-06T02:16:23Z

[Why] The problem is that we accidentally stopped loading some of the IRAM bytes used for the backlight ramping mechanism. This happened when we started reserving some region of IRAM as DMCU FW write only. [How] This change will define a start+end region for the IRAM read only region. So the parameters needed for the backlight operation will be loaded since it will be defined outside of the read only region. Signed-off-by: Anthony Koo Reviewed-by: Aric Cyr Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher

drm/amd/display: Adjust ABM 2.2 contrast parameters

2019-01-25T21:15:36Z

[Why] Improved contrast in ABM 2.2 is desired [How] Increase the contrast factor for ABM levels 2, 3 and 4 Signed-off-by: Josip Pavic Reviewed-by: Anthony Koo Acked-by: Leo Li Signed-off-by: Alex Deucher

drm/amd/display: Create switching mechanism for ABM 2.2

2019-01-25T21:15:36Z

[Why] Need method of detecting which version of the DMCU FW is loaded and load the appropriate iRAM. [How] Create definition for ABM 2.2 iRAM, and load it if the DMCU FW version number matches the ABM 2.2 version; otherwise load ABM 2.1 iRAM. Signed-off-by: Josip Pavic Reviewed-by: Anthony Koo Acked-by: Leo Li Signed-off-by: Alex Deucher