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path: root/drivers/gpu/drm/amd/display/modules/power/power_helpers.h
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* drm/amd/display: Initial support for SmartMuxAurabindo Pillai2025-07-151-0/+2
| | | | | | | | | | | | | | | | | | | SmartMux is a mechanism to switch the GPU being used for scanout in a hybrid configuration. This is used for devices with an eDP and two GPUs. This is only valid when the system has a physical switch (Multiplexer) in the board to switch between the two GPUs. When a graphically intensive workload like a game is being run, the system can be switch the active display to the dGPU, so that we can avoid copying the buffer from dGPU to APU for scanout. This helps with latency and FPS. When power consumption is preferred, the system can be switched to the APU. Reviewed-by: Alvin Lee <[email protected]> Signed-off-by: Aurabindo Pillai <[email protected]> Signed-off-by: Ivan Lipski <[email protected]> Tested-by: Daniel Wheeler <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: Revised for Replay Pseudo vblank controlDennis Chan2025-01-101-1/+1
| | | | | | | | | | | [why & how] Revised Replay Full screen video Pseudo vblank control. Reviewed-by: Allen Li <[email protected]> Signed-off-by: Dennis Chan <[email protected]> Signed-off-by: Tom Chung <[email protected]> Tested-by: Daniel Wheeler <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: Add replay desync error count tracking and reset functionalityJack Chang2025-01-101-0/+1
| | | | | | | | | | | | [Why & How] Build-up get/reset desync error count interface and implement the functions. Reviewed-by: ChunTao Tso <[email protected]> Reviewed-by: Robin Chen <[email protected]> Signed-off-by: Jack Chang <[email protected]> Signed-off-by: Tom Chung <[email protected]> Tested-by: Daniel Wheeler <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* Revert "drm/amd/display: Revised for Replay Pseudo vblank"Gabe Teeger2024-12-101-1/+1
| | | | | | | | | | | | This reverts commit 0f5ac8c8e275 Due to a replay regression. Fixes: 0f5ac8c8e275 ("drm/amd/display: Revised for Replay Pseudo vblank control") Reviewed-by: Dennis Chan <[email protected]> Signed-off-by: Gabe Teeger <[email protected]> Signed-off-by: Aurabindo Pillai <[email protected]> Tested-by: Daniel Wheeler <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: Revised for Replay Pseudo vblank controlDennis Chan2024-12-101-1/+1
| | | | | | | | | | | [why] Revised Replay Full screen video Pseudo vblank control. Reviewed-by: ChunTao Tso <[email protected]> Signed-off-by: Dennis Chan <[email protected]> Signed-off-by: Fangzhi Zuo <[email protected]> Tested-by: Daniel Wheeler <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: Introduce deferred Replay coasting vtotal updateChunTao Tso2024-06-141-0/+5
| | | | | | | | | | Add functions to defer updating of coasting vtotal after source refresh rate update. Reviewed-by: Robin Chen <[email protected]> Acked-by: Zaeem Mohamed <[email protected]> Signed-off-by: ChunTao Tso <[email protected]> Tested-by: Daniel Wheeler <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: Amend coasting vtotal for replay low hzChunTao Tso2024-03-201-1/+1
| | | | | | | | | | | | | | | | | | [WHY] The original coasting vtotal is 2 bytes, and it need to be amended to 4 bytes because low hz case. [HOW] Amend coasting vtotal from 2 bytes to 4 bytes. Cc: Mario Limonciello <[email protected]> Cc: Alex Deucher <[email protected]> Cc: [email protected] Reviewed-by: Alvin Lee <[email protected]> Acked-by: Alex Hung <[email protected]> Signed-off-by: ChunTao Tso <[email protected]> Tested-by: Daniel Wheeler <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: Replay + IPS + ABM in Full Screen VPBChunTao Tso2024-01-251-0/+1
| | | | | | | | | | | | | | | | [Why] Because ABM will wait VStart to start getting histogram data, it will cause we can't enter IPS while full screnn video playing. [How] Modify the panel refresh rate to the maximun multiple of current refresh rate. Reviewed-by: Dennis Chan <[email protected]> Acked-by: Roman Li <[email protected]> Signed-off-by: ChunTao Tso <[email protected]> Tested-by: Daniel Wheeler <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: Add some functions for Panel ReplayTom Chung2024-01-031-0/+5
| | | | | | | | | | | | | | | | [WHY] Prepare for enabling the Panel Replay feature [HOW] - Add some Panel Replay setting functions in DC - Add the Panel Replay resource in dcn35_resource.c - Add debug masks for Panel Replay Tested-by: Daniel Wheeler <[email protected]> Acked-by: Rodrigo Siqueira <[email protected]> Reviewed-by: Leo Li <[email protected]> Signed-off-by: Tom Chung <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: Add Freesync Panel DM codeBhawanpreet Lakha2023-08-071-0/+2
| | | | | | | | | We need certain conditions for replay to be enabled, so create an interface in DM to enable/disable replay. Signed-off-by: Bhawanpreet Lakha <[email protected]> Reviewed-by: Harry Wentland <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: add option to use custom backlight capsJosip Pavic2023-04-241-0/+3
| | | | | | | | | | | | [Why & How] Provide option for vendors to specify a custom brightness-to-backlight conversion profile. Tested-by: Daniel Wheeler <[email protected]> Reviewed-by: Anthony Koo <[email protected]> Acked-by: Rodrigo Siqueira <[email protected]> Signed-off-by: Josip Pavic <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: Pass DSC slice height to PSR FWRobin Chen2023-01-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | [Why] When DSC is enabled, the PSRSU seletive update region must be multiple number of DSC slice height number. The original solution is to overwrite the SU Y granularity by DSC slice height in DAL driver. However, the size of the SU Y granularity variable only has 8 bytes and the DSC slice height may over the 8 bytes size. [How] Instead of overwriting the SU Y granularity value, add a new DSC slice height pararmeter and pass it to DMUB PSRSU FW. The PSRSU FW will refer to the DSC slice height value and extend the SU region. Reviewed-by: Dennis Chan <[email protected]> Reviewed-by: ChunTao Tso <[email protected]> Acked-by: Alan Liu <[email protected]> Signed-off-by: Robin Chen <[email protected]> Tested-by: Daniel Wheeler <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: fix PSR-SU/DSC interoperability supportHamza Mahfooz2023-01-091-0/+3
| | | | | | | | | | | | Currently, there are issues with enabling PSR-SU + DSC. This stems from the fact that DSC imposes a slice height on transmitted video data and we are not conforming to that slice height in PSR-SU regions. So, pass slice_height into su_y_granularity to feed the DSC slice height into PSR-SU code. Acked-by: Harry Wentland <[email protected]> Signed-off-by: Hamza Mahfooz <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: add shared helpers to update psr config fields to power moduleDavid Zhang2022-06-061-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [why] Currently the amdgpu DM psr configuration parameters are hardcoded before feeding into the DC helper to setup PSR. We would define a helper which is to calculate parts of the psr config fields to avoid hard-coding. [how] To make helper shareable, declare and define the helper in the module_helper, to set/update below fields: - psr remote buffer setup time - sdp tx line number deadline - line time in us - su_y_granularity - su_granularity_required - psr_frame_capture_indication_req - psr_exit_link_training_required add another helper to check given the stream context, if there is only one stream and the output is eDP panel connected. changes in v2: ------------------ - add detailed comment for how psr setup time is calculated as per eDP 1.5 spec Cc: Chandan Vurdigerenataraj <[email protected]> Signed-off-by: David Zhang <[email protected]> Acked-by: Leo Li <[email protected]> Reviewed-by: Harry Wentland <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: implement shared PSR-SU sink validation helperDavid Zhang2022-04-131-0/+1
| | | | | | | | | | | | | | | | | [why] creating a generic helper for AMD specific PSR-SU sink validation. Moving the function to the power module to reference it across all OS. [how] - drop PSRSU specific sink validation helper and move to power module by reading PSR version and other PSR caps - call the new helper from linux DM (amdgpu_dm_psr) Acked-by: Pavle Kotarac <[email protected]> Acked-by: Tom Chung <[email protected]> Signed-off-by: David Zhang <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: Added support for individual control for multiple ↵Jake Wang2021-05-271-1/+2
| | | | | | | | | | | | | back-light instances. [Why & How] Added support for individual control for multiple back-light instances. Signed-off-by: Jake Wang <[email protected]> Reviewed-by: Anthony Koo <[email protected]> Acked-by: Qingqing Zhuo <[email protected]> Tested-by: Daniel Wheeler <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: gradually ramp ABM intensityRizvi2020-12-231-0/+1
| | | | | | | | | | | | | [Why] Need driver to pass values of backlight ramp start and ramp reduction so that intensity can be ramped down appropriately. [How] Using abm_parameters structure to get these values from driver. Signed-off-by: Rizvi <[email protected]> Acked-by: Bindu Ramamurthy <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: Change ABM config init interfaceYongqiang Sun2020-10-081-1/+3
| | | | | | | | | | [Why & How] change abm config init interface to support multiple ABMs. Signed-off-by: Yongqiang Sun <[email protected]> Reviewed-by: Chris Park <[email protected]> Acked-by: Rodrigo Siqueira <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: Fix ABM config copy for dmcubWyatt Wood2020-04-091-0/+3
| | | | | | | | | Decouple dmcub config copy from dmcu iram copy. Signed-off-by: Wyatt Wood <[email protected]> Reviewed-by: Anthony Koo <[email protected]> Acked-by: Rodrigo Siqueira <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: set minimum abm backlight levelAnthony Koo2019-10-031-0/+1
| | | | | | | | | | | | | | | | | | | | [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 <[email protected]> Reviewed-by: Aric Cyr <[email protected]> Acked-by: Leo Li <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
* drm/amd/display: Load DMCU IRAMDavid Francis2018-11-261-0/+47
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 <[email protected]> Reviewed-by: Harry Wentland <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
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