kernel/linux.git/drivers/gpu/drm/amd/display/dc/dce, branch v5.8.18

drm/amd/display: fix potential integer overflow when shifting 32 bit variable bl_pwm

2020-10-29T09:07:30+00:00

[ Upstream commit 1d5503331b12a76266049289747dfd94f1643fde ] The 32 bit unsigned integer bl_pwm is being shifted using 32 bit arithmetic and then being assigned to a 64 bit unsigned integer. There is a potential for a 32 bit overflow so cast bl_pwm to enforce a 64 bit shift operation to avoid this. Addresses-Coverity: ("unintentional integer overflow") Fixes: 3ba01817365c ("drm/amd/display: Move panel_cntl specific register from abm to panel_cntl.") Signed-off-by: Colin Ian King Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amd/display: Fix incorrect backlight register offset for DCN

2020-08-26T09:49:02+00:00

commit a49f6727e14caff32419cc3002b9ae9cafb750d7 upstream. [Why] Typo in backlight refactor inctroduced wrong register offset. [How] Change DCE to DCN register map for PWRSEQ_REF_DIV Cc: stable@vger.kernel.org Signed-off-by: Aric Cyr Reviewed-by: Ashley Thomas Acked-by: Qingqing Zhuo Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/amd/display: move location of dmub_srv.h file

2020-05-05T17:12:33+00:00

[Why] Make a separation of what belongs in the differen dmub headers dmub_srv.h is for exposing dmub srv interface to rest of driver. other headers inside dmub/inc exposes cmds and definitions that are owned by the firmware [How] keep firmware owned definitions in dmub/inc move stuff that is purely driver interface headers to dmub/ since those are interface calls that are defined for rest of driver to use Signed-off-by: Anthony Koo Reviewed-by: Aric Cyr Acked-by: Harry Wentland Acked-by: Aurabindo Pillai Signed-off-by: Alex Deucher

drm/amd/display: add addition dc type to translate to dmub fw type

2020-05-05T17:11:49+00:00

[Why] For a type like PSR version, it makes sense for most of the code to include a dc type, instead of having this a fw type define since this is a capability and type exposed by dc. Especially if it doesn't even need to communicate with the fw. The code that is packing the firmware command message should be the one who needs to translate the psr version into a command that the firmware understands. [How] Add a dc_psr_version enum. Signed-off-by: Anthony Koo Reviewed-by: Aric Cyr Acked-by: Aurabindo Pillai Signed-off-by: Alex Deucher

drm/amd/display: Move panel_cntl specific register from abm to panel_cntl.

2020-05-05T17:10:46+00:00

[Why] panel_cntl specific register should be access in panel_cntl object. [How] Move these register access from abm to panel_cntl. Signed-off-by: Yongqiang Sun Reviewed-by: Anthony Koo Acked-by: Aurabindo Pillai Signed-off-by: Alex Deucher

drm/amd/display: remove set but not used variable 'speakers' in dce_stream_encoder.c

2020-04-30T20:49:12+00:00

Fixes gcc '-Wunused-but-set-variable' warning: drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c:1339:11: warning: variable ‘speakers’ set but not used [-Wunused-but-set-variable] It is introduced by commit 4562236b3bc0 ("drm/amd/dc: Add dc display driver (v2)"), but never used, so remove it. Reported-by: Hulk Robot Signed-off-by: Zheng Bin Signed-off-by: Alex Deucher

drm/amd/display: Add panel cntl id for set backlight level.

2020-04-28T20:19:24+00:00

[Why & How] Add panel cntl instance when calling set backlight. Signed-off-by: Yongqiang Sun Reviewed-by: Anthony Koo Acked-by: Aurabindo Pillai Acked-by: Tony Cheng Signed-off-by: Alex Deucher

drm/amd/display: Pass command instead of header into DMUB service

2020-04-28T20:19:05+00:00

[Why] We read memory that we shouldn't be touching if the struct isn't a full union dmub_rb_cmd. [How] Fix up all the callers and functions that take in the dmub_cmd_header to use the dmub_rb_cmd instead. Signed-off-by: Nicholas Kazlauskas Reviewed-by: Tony Cheng Acked-by: Aurabindo Pillai Signed-off-by: Alex Deucher

drm/amd/display: clean up some header paths

2020-04-28T20:17:29+00:00

[Why] Some include paths don't need to have relative paths And some types missing [How] make some changes to headers and modify include path Signed-off-by: Anthony Koo Reviewed-by: Tony Cheng Acked-by: Aurabindo Pillai Signed-off-by: Alex Deucher

drm/amd/display: change from panel to panel cntl

2020-04-22T22:11:48+00:00

[Why] it doesn't represent panel specifically, it's more like the control logic for the panel [How] change from panel to panel cntl to make it a bit more clear Signed-off-by: Anthony Koo Reviewed-by: Tony Cheng Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher