linux-dev/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c, branch linus/master

drm/amd/display: Check if modulo is 0 before dividing.

2022-05-26T18:56:30Z

[How & Why] If a value of 0 is read, then this will cause a divide-by-0 panic. Reviewed-by: Martin Leung Acked-by: Qingqing Zhuo Signed-off-by: David Galiffi Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: remove redundant CONFIG_DRM_AMD_DC_DCN in dce

2022-05-10T21:53:12Z

[Why & How] CONFIG_DRM_AMD_DC_DCN is used by pass the compilation failures, but DC code should be OS-agnostic. This patch fixes it by removing unnecessasry CONFIG_DRM_AMD_DC_DCN in dce directory. Reviewed-by: Rodrigo Siqueira Acked-by: Stylon Wang Signed-off-by: Alex Hung Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Select correct DTO source

2022-04-12T18:20:13Z

[WHY&HOW] Change criteria for setting DTO source value, and always set it regardless of the signal type. Reviewed-by: Ariel Bernstein Acked-by: Pavle Kotarac Signed-off-by: Dillon Varone Signed-off-by: Alex Deucher

drm/amd/display: Fix pointer dereferenced before checking

2022-04-01T03:05:54Z

The value actual_pix_clk_100Hz is dereferencing pointer pix_clk_params before pix_clk_params is being null checked. Fix this by assigning pix_clk_params->requested_pix_clk_100hz to actual_pix_clk_100Hz only if pix_clk_params is not NULL, otherwise just NULL. Signed-off-by: Haowen Bai Signed-off-by: Alex Deucher

drm/amd/display: merge two duplicated clock_source_create

2022-03-15T18:25:15Z

[why] dcn31x could use dcn31 sepcific which contains deep_color_ratio for dmub Reviewed-by: Nevenko Stupar Reviewed-by: Hansen Dsouza Reviewed-by: Aric Cyr Acked-by: Alan Liu Signed-off-by: Charlene Liu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: fix deep color ratio

2022-03-15T18:25:15Z

Fix enum mapping for deep color ratio Reviewed-by: Charlene Liu Acked-by: Alan Liu Signed-off-by: Hansen Dsouza Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Fix 64 bit divisions on 32 bit platforms by using div64 API

2021-03-02T19:07:59Z

[why] Synchronization displays with different timings feature uses division operator for 64 bit division, which is not supported by 32 bit platforms [how] Use div64 API for 64 bit division Signed-off-by: Vladimir Stempen Tested-by: Bindu Ramamurthy Signed-off-by: Alex Deucher

drm/amd/display: Synchronize displays with different timings

2021-02-22T23:05:48Z

[why] Vendor based fan noise improvement [how] Report timing synchronizable when DP streams time frame difference is less than 0.05 percent. Adjust DP DTOs and sync displays using MASTER_UPDATE_LOCK_DB_X_Y Signed-off-by: Vladimir Stempen Acked-by: Bindu Ramamurthy Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Fix potential integer overflow

2021-02-18T21:43:09Z

Fix potential integer overflow by casting actual_calculated_clock_100hz to u64, in order to give the compiler complete information about the proper arithmetic to use. Notice that such variable is used in a context that expects an expression of type u64 (64 bits, unsigned) and the following expression is currently being evaluated using 32-bit arithmetic: actual_calculated_clock_100hz * post_divider Fixes: 7a03fdf628af ("drm/amd/display: fix 64bit division issue on 32bit OS") Addresses-Coverity-ID: 1501691 ("Unintentional integer overflow") Signed-off-by: Gustavo A. R. Silva Signed-off-by: Alex Deucher

drm/amd/display: fix 64bit division issue on 32bit OS

2021-02-09T20:48:01Z

Replace "/" with div_u64 for 64bit division on 32bit OS. Signed-off-by: Lang Yu Reviewed-by: Nicholas Kazlauskas Acked-by: Anson Jacob Acked-by: Huang Rui Signed-off-by: Alex Deucher