kernel/linux.git/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c, branch v6.3

drm/amd/display: use swap() helper macro in bios_parser

2023-01-17T21:11:51+00:00

Use swap() helper macro instead of open coded swap instructions. The change also facilitates code cleanup and realignment for improved readability. Issue identified using swap.cocci Coccinelle semantic patch script. Signed-off-by: Deepak R Varma Signed-off-by: Alex Deucher

drm/amd/display: Skip backlight control delay on external powered links

2023-01-17T20:40:28+00:00

[Why] When an eDP panel is powered externally from a different GPU, we can avoid waiting for hardware sequencing delays when switching the backlight on/off as the display backlight is no longer powered by the original source. [How] This commit extends the 'link_powered_externally' variable to allow bypassing hardware delays for additional backlight commands and force the backlight on/off when a link is powered by another GPU. Tested-by: Daniel Wheeler Reviewed-by: Felipe Clark Acked-by: Rodrigo Siqueira Signed-off-by: Tony Tascioglu Signed-off-by: Alex Deucher

drm/amd/display: Optimize link power-down when link powered externally

2023-01-17T20:39:39+00:00

[Why] When an eDP panel is powered externally by a different GPU, we don't need to wait for hardware sequencing delays when powering down a link, as the display is not dependent on the GPU being powered down. [How] This commit adds a variable 'link_powered_externally' to indicate when a link is being powered by another GPU. Tested-by: Daniel Wheeler Reviewed-by: Felipe Clark Acked-by: Rodrigo Siqueira Signed-off-by: Tony Tascioglu Signed-off-by: Alex Deucher

drm/amd/display: refactor ddc logic from dc_link_ddc to link_ddc

2023-01-13T19:57:40+00:00

[why] 1. Move dd_link_ddc functions to link_ddc. 2. Move link ddc functions declaration exposed in dc to link.h 3. Move link ddc functions declaration exposed in dm to dc_link.h 4. Remove i2caux_interface.h file Tested-by: Daniel Wheeler Reviewed-by: Jun Lei Acked-by: Rodrigo Siqueira Signed-off-by: Wenjing Liu Signed-off-by: Alex Deucher

drm/amd/display: fix array index out of bound error in bios parser

2022-11-15T18:35:14+00:00

[Why&How] Firmware headers dictate that gpio_pin array only has a size of 8. The count returned from vbios however is greater than 8. Fix this by not using array indexing but incrementing the pointer since gpio_pin definition in atomfirmware.h is hardcoded to size 8 Reviewed-by: Martin Leung Acked-by: Tom Chung Signed-off-by: Aurabindo Pillai Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Support parsing VRAM info v3.0 from VBIOS

2022-11-15T16:53:35+00:00

[Why] For DCN3.2 and DCN3.21, VBIOS has switch to using v3.0 of the VRAM info struct. We should read and override the VRAM info in driver with values provided by VBIOS to support memory downbin cases. Reviewed-by: Alvin Lee Acked-by: Tom Chung Signed-off-by: George Shen Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Remove unused struct i2c_id_config_access

2022-10-06T16:07:09+00:00

After commit 5a8132b9f606 ("drm/amd/display: remove dead dc vbios code"), no one use struct i2c_id_config_access, so remove it. Reviewed-by: Rodrigo Siqueira Signed-off-by: Yuan Can Signed-off-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: add debug keys for override bios settings.

2022-09-29T13:41:45+00:00

[why] adding debug keys used for compliance test. Reviewed-by: Chris Park Acked-by: Jasdeep Dhillon Signed-off-by: Charlene Liu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Assume connectors are on single slot

2022-09-19T19:15:37+00:00

[Why] v1_5 display object table has no way for connectors to indicate which slot they are a part of, resulting in additional empty slots to appear in EDID management UI. [How] Assume that all connectors belong to the same slot. Reviewed-by: Jun Lei Acked-by: Wayne Lin Signed-off-by: Jaehyun Chung Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Various logs added

2022-09-19T19:09:11+00:00

[Why & How] Added logs for panel delays, spread_spectrum_percentage, and gpuclk_ss_percentage to facilitate debugging. Reviewed-by: Charlene Liu Acked-by: Wayne Lin Signed-off-by: Leo Chen Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher