kernel.git/drivers/gpu/drm/amd/display/dc/link, branch linux-6.5.y

drm/amd/display: fix a regression in blank pixel data caused by coding mistake

2023-10-06T11:16:00Z

[ Upstream commit f77d1a49902bc70625e3d101a16d8a687f7e97db ] [why] There was unfortunately a coding mistake. It gets caught with an ultrawide monitor that requires ODM 4:1 combine. We are blanking or unblanking pixel data we are supposed to enumerate through all ODM pipes and program DPG for each of those pipes. However the coding mistake causes us to program only the first and last ODM pipes. Cc: Mario Limonciello Cc: Alex Deucher Cc: stable@vger.kernel.org Reviewed-by: Martin Leung Acked-by: Tom Chung Signed-off-by: Wenjing Liu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amd/display: Update DPG test pattern programming

2023-10-06T11:16:00Z

[ Upstream commit ad4455c614b27e6b24a4e6bd70114545c1660ff9 ] [Why] Last ODM slice could be slightly larger than other slice because it can be including the residual. [How] Update DPG pattern programming sequence to use a different width for last odm slice. Reviewed-by: Chris Park Acked-by: Alex Hung Signed-off-by: Wenjing Liu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Stable-dep-of: f77d1a49902b ("drm/amd/display: fix a regression in blank pixel data caused by coding mistake") Signed-off-by: Sasha Levin

drm/amd/display: Add DPIA Link Encoder Assignment Fix

2023-09-23T09:14:38Z

commit 64be47ba286117ee4e3dd9d064c88ea2913e3269 upstream. For DPIA we should have preferred DIG assignment based on DPIA selected as per the ASIC design. Reviewed-by: George Shen Acked-by: Hamza Mahfooz Signed-off-by: Mustapha Ghaddar Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amd/display: Work around bad DPCD state on link loss

2023-06-30T17:11:35Z

[Why] This display doesn't properly indicate link loss through DPCD bits such as CR_DONE / CHANNEL_EQ_DONE / SYMBOL_LOCKED / INTERLANE_ALIGN_DONE, which all remain set. In addition, DPCD200Eh doesn't match the value of DPCD204h in all cases. For these reasons, we can miss re-training the link, since we don't properly detect link loss with this display. [Why] Add display-specific workaround to read DPCD204h, so that we can detect link loss based on 128b132b-specific status bits in this register. Tested-by: Daniel Wheeler Reviewed-by: Wenjing Liu Acked-by: Rodrigo Siqueira Signed-off-by: Ilya Bakoulin Signed-off-by: Alex Deucher

drm/amd/display: Fix 128b132b link loss handling

2023-06-23T19:45:48Z

[Why] We don't check 128b132b-specific bits in LANE_ALIGN_STATUS_UPDATED DPCD registers when parsing link loss status, which can cause us to miss a link loss notification from some sinks. [How] Add a 128b132b-specific status bit check. Cc: stable@vger.kernel.org # 6.3+ Reviewed-by: Wenjing Liu Acked-by: Hamza Mahfooz Signed-off-by: Ilya Bakoulin Signed-off-by: Alex Deucher

drm/amd/display: limit DPIA link rate to HBR3

2023-06-15T14:44:57Z

[Why] DPIA doesn't support UHBR, driver should not enable UHBR for dp tunneling [How] limit DPIA link rate to HBR3 Cc: Mario Limonciello Cc: Alex Deucher Cc: stable@vger.kernel.org Acked-by: Stylon Wang Signed-off-by: Peichen Huang Reviewed-by: Mustapha Ghaddar Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Add control flag to dc_stream_state to skip eDP BL off/link off

2023-06-09T16:41:29Z

Add control flag to dc_stream_state to skip eDP BL off/link off. Acked-by: Stylon Wang Signed-off-by: Max Tseng Reviewed-by: Anthony Koo Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: clean up some inconsistent indenting

2023-06-09T16:37:24Z

No functional modification involved. drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dpms.c:2377 link_set_dpms_on() warn: inconsistent indenting. Reported-by: Abaci Robot Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5376 Acked-by: Alex Deucher Signed-off-by: Jiapeng Chong Signed-off-by: Hamza Mahfooz Signed-off-by: Alex Deucher

drm/amd/display: Clean FPGA code in dc

2023-06-09T14:44:11Z

[Why] Drop dead code for Linux. [How] Remove all IS_FPGA_MAXIMUS_DC and IS_DIAG_DC Reviewed-by: Ariel Bernstein Acked-by: Tom Chung Signed-off-by: Qingqing Zhuo Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: lower dp link training message level

2023-06-09T14:42:39Z

[Why] some test apps report dp link training waring even dp training pass. there are 4 tries of lt within perform_link_training_with_retries. if lt pass within 4 tries, it will NOT be reated as lt failure. for each try of lt, if lt fails, current driver implementation prints message at warning level. this let people think dp lt does not work properly. [How] for 1st, 2nd and 3rd try of lt, print message at debug level. for the 4th try of lt, print message at warning level. Reviewed-by: Jerry Zuo Acked-by: Tom Chung Signed-off-by: Hersen Wu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher