kernel/linux.git/drivers/gpu/drm/amd/display/dc/dce, branch v5.10.7

drm/amd/display: Add get_dig_frontend implementation for DCEx

2021-01-06T13:56:49+00:00

commit 6bdeff12a96c9a5da95c8d11fefd145eb165e32a upstream. Some old ASICs might not implement/require get_dig_frontend helper; in this scenario, we can have a NULL pointer exception when we try to call it inside vbios disable operation. For example, this situation might happen when using Polaris12 with an eDP panel. This commit avoids this situation by adding a specific get_dig_frontend implementation for DCEx. Cc: Alex Deucher Cc: Borislav Petkov Cc: Harry Wentland Cc: Nicholas Kazlauskas Cc: Chiawen Huang Reported-and-tested-by: Borislav Petkov Acked-by: Alex Deucher Signed-off-by: Rodrigo Siqueira Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amd/display: Fixed panic during seamless boot.

2020-10-26T21:10:27+00:00

[why] get_pixel_clk_frequency_100hz is undefined in clock_source_funcs. [how] set function pointer: ".get_pixel_clk_frequency_100hz = get_pixel_clk_frequency_100hz" Signed-off-by: David Galiffi Reviewed-by: Bhawanpreet Lakha Acked-by: Aurabindo Pillai Signed-off-by: Alex Deucher

drm/amd/display: Ensure all debug bits are passed to fw

2020-09-29T20:08:37+00:00

[Why] Some debug bits are not being copied from driver to fw. [How] Copy debug bits properly. Signed-off-by: Wyatt Wood Reviewed-by: Anthony Koo Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: Implement PSR wait for enable/disable

2020-09-22T16:28:49+00:00

[Why] For DMUB implementation of PSR, the 'wait' parameter, used to determine if driver should wait for PSR enable/disable, is not implemented correctly. [How] Implement wait for PSR enable/disable. Signed-off-by: Wyatt Wood Reviewed-by: Anthony Koo Acked-by: Qingqing Zhuo Signed-off-by: Alex Deucher

drm/amd/display: Bug in dce_is_panel_backlight_on()

2020-09-22T16:27:35+00:00

[Why] dce_is_panel_backlight_on() will return wrong value if LVTMA_BLON_OVRD is 0 [How] When LVTMA_BLON_OVRD is 0, read LVTMA_PWRSEQ_TARGET_STATE instead Signed-off-by: Peikang Zhang Reviewed-by: Anthony Koo Acked-by: Qingqing Zhuo Signed-off-by: Alex Deucher

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

2020-09-22T16:27:10+00:00

[Why] Typo in backlight refactor introduced wrong register offset. [How] SR(BIOS_SCRATCH_2) to NBIO_SR(BIOS_SCRATCH_2). Signed-off-by: David Galiffi Reviewed-by: Anthony Koo Acked-by: Qingqing Zhuo Signed-off-by: Alex Deucher Cc:

drm/amd/display: Rename set_mst_bandwidth to align with DP spec

2020-09-15T21:52:41+00:00

[Why] The function set_mst_bandwidth is poorly name since it isn't clear what it does, and it also does not reflect any part of the allocation sequence described in the DP spec. [How] Rename the function set_mst_bandwidth to set_throttled_vcp_size. Signed-off-by: George Shen Acked-by: Aurabindo Pillai Signed-off-by: Alex Deucher

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

2020-08-18T22:22:43+00:00

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

drm/amd/display: Add read backlight interface

2020-08-17T18:08:12+00:00

[Why & How] Add read backlight interface to get ABM data. Signed-off-by: Yongqiang Sun Reviewed-by: Anthony Koo Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

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

2020-08-10T21:26:52+00:00

[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