linux-dev/drivers/gpu/drm/amd/display/dmub/src, branch master

drm/amd/display: Display does not light up after S4 resume

2022-10-10T21:32:55Z

[Why] Dpia hpd interrupt processing is disabled when entering S4/S0i3 and would be reenabled after detection completes during resuming. Because, keeping hpd interrupts enabled during detection leads to multiple detections for the same hpd transition. There is a S4 case where dpia hpd interrupt is missed when driver is in transitioning from hpd interrupt processing disable to enable and the display does not light up. [How] - Added dmub inbox command DMUB_CMD__DPIA_HPD_INT_ENABLE to explicitly control dmub to issue dpia hpd interrupt or not. If dpia hpd interrupt is disabled, dmub will keep the hpd pending and post it once driver reenables dpia hpd interrupt or when querying with DMUB_CMD__QUERY_HPD_STATE. - Added dmub boot option dpia_hpd_int_enable_supported to notify dmub about whether DMUB_CMD__DPIA_HPD_INT_ENABLE command would be used. Tested-by: Daniel Wheeler Reviewed-by: Mustapha Ghaddar Reviewed-by: Jun Lei Acked-by: Qingqing Zhuo Signed-off-by: Meenakshikumar Somasundaram Signed-off-by: Alex Deucher

drm/amd/display: Add DMUB support for DCN314

2022-07-14T00:57:05Z

Initialize DMUB for DCN 3.1.4. Use same funcs as DCN31. Signed-off-by: Roman Li Signed-off-by: Alex Deucher

drm/amd/display: cleaning up smu_if to add future flexibility

2022-06-03T20:45:01Z

This commit cleans up code that uses old variables and adds some SMU interfaces for future flexibility. Signed-off-by: Martin Leung Signed-off-by: Alex Deucher

drm/amd/display: Ensure that DMCUB fw in use is loaded by DC and not VBIOS

2022-06-03T20:44:15Z

[Why?] On wake from S3/S4, driver checks if DMUB is initialized. On S4 VBIOS loads DMUB, and driver does not reload as it appears to be initialized already. [How?] Add a check for the DAL_FW bit to ensure that loaded FW is from driver and not VBIOS. Signed-off-by: Dillon Varone Signed-off-by: Fangzhi Zuo Reviewed-by: Aurabindo Pillai Signed-off-by: Alex Deucher

drm/amd/display: Add DMCUB source files and changes for DCN32/321

2022-06-03T20:43:37Z

DMCUB is the display engine microcontroller which aids in modesetting and other display related features. Signed-off-by: Aurabindo Pillai Acked-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amd/display: Fix DMUB outbox trace in S4 (#4465)

2022-06-01T19:56:48Z

[Why] DMUB Outbox0 read/write pointer not sync after resumed from S4. And that caused old traces were sent to outbox. [How] Disable DMUB Outbox0 interrupt and clear DMUB Outbox0 read/write pointer when resumes from S4. And then enable Outbox0 interrupt before starts DMCUB. Reviewed-by: Nicholas Kazlauskas Acked-by: Jasdeep Dhillon Tested-by: Daniel Wheeler Signed-off-by: Cruise Hung Signed-off-by: Alex Deucher

drm/amd/display: Wait DMCUB to idle state before reset.

2022-06-01T19:56:48Z

[WHY] Very low rate to cause memory access issue while resetting DMCUB after the halt command was sent to it. The process of stopping fw of DMCUB may be timeout, that means it is not in idle state, such as the window frames may still be kept in cache, so reset by force will cause MMHUB hang. [HOW] After the halt command was sent, keep checking the DMCUB state until it is idle. Reviewed-by: Eric Yang Reviewed-by: Nicholas Kazlauskas Acked-by: Jasdeep Dhillon Tested-by: Daniel Wheeler Signed-off-by: hengzhou Signed-off-by: Alex Deucher

drm/amd/display: Add Connection Manager boot option.

2022-05-04T14:43:55Z

[Why] Boot up behaviour may differ depending on the Connection Manager handling USB4 tunneling. [How] Send boot option to firmware to indicate Connection Manager. Reviewed-by: Jun Lei Acked-by: Wayne Lin Signed-off-by: Jimmy Kizito Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Add DCN315 DMUB

2022-02-18T19:07:01Z

Add support for the DMUB firmware for DCN 3.1.5. Signed-off-by: Qingqing Zhuo Acked-by: Harry Wentland Signed-off-by: Alex Deucher

drm/amd/display: Add DMUB support for DCN316

2022-02-17T20:46:04Z

Initialize DMUB for DCN316. Use same funcs as DCN31 for DCN316. Reviewed-by: Harry Wentland Acked-by: Prike Liang Signed-off-by: Leo Li Signed-off-by: Alex Deucher