kernel/linux.git/drivers/gpu/drm/amd/display/modules/power, branch v5.1.16

drm/amd/display: Increase precision for backlight curve

2019-02-19T20:58:26+00:00

[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

2019-02-06T02:16:23+00:00

[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

2019-02-06T02:16:23+00:00

[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

2019-01-25T21:15:36+00:00

[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

2019-01-25T21:15:36+00:00

[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

drm/amd/display: Update DMCU versioning mechanism

2019-01-25T21:15:36+00:00

[Why] Current date based versioning doesn't tell us about feature version and build version, and is not useful for debug. [How] Add versioning based on feature and build Signed-off-by: Josip Pavic Reviewed-by: Anthony Koo Acked-by: Leo Li Signed-off-by: Alex Deucher

drm/amd/display: Redefine DMCU_SCRATCH to identify DMCU state

2019-01-14T20:39:22+00:00

[why] To resume system before entering S0i3 completely will cause PSP not reload DMCU FW since there is not HW power state change. In this case, driver cannot get correct DMCU version from IRAM since driver override it and DMCU didn't reload to update it. It makes driver return false in dcn10_dmcu_init(). [how] 1.To redefine DMCU_SCRATCH to identify different DMCU state. 2.To reserve IRAM 0xF0~0xFF write by DMCU only. 3.To remove dcn10_get_dmcu_state Signed-off-by: Martin Tsai Reviewed-by: Anthony Koo Acked-by: Leo Li Signed-off-by: Alex Deucher

drm/amd/display: Pack DMCU iRAM alignment

2019-01-14T20:38:16+00:00

[Why] When the DMCU's iRAM definition was moved to the newly created power_helpers, a #pragma pack was lost, causing the iRAM to be misaligned [How] Restore the #pragma pack Signed-off-by: Josip Pavic Reviewed-by: Anthony Koo Acked-by: Leo Li Signed-off-by: Alex Deucher

drm/amd/display: Load DMCU IRAM

2018-11-26T20:47:53+00:00

DMCU IRAM must be loaded by the driver before DMCU can function. Move the IRAM code out of the shadows and into a new file modules/power/power_helpers.c The IRAM table contains the backlight curve and ABM parameters Add this new file to the Makefiles Call dmcu_load_iram in late init of DM Move struct dmcu_version from dc.h to dmcu.h to allow dmcu to be included on its own Signed-off-by: David Francis Reviewed-by: Harry Wentland Signed-off-by: Alex Deucher