kernel/linux.git/drivers/gpu/drm/amd/display/dmub/src, branch v6.3

drm/amd/display: Reset DMUB mailbox SW state after HW reset

2023-01-31T19:03:36+00:00

[Why] Otherwise we can be out of sync with what's in the hardware, leading to us rerunning every command that's presently in the ringbuffer. [How] Reset software state for the mailboxes in hw_reset callback. This is already done as part of the mailbox init in hw_init, but we do need to remember to reset the last cached wptr value as well here. Reviewed-by: Hansen Dsouza Acked-by: Alex Hung Signed-off-by: Nicholas Kazlauskas Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Update dmub header to match DMUB

2023-01-13T19:59:41+00:00

[WHY] Last PR missed name of a struct to match in DMUB [HOW] Update the logic in dmub_cmh.h header Tested-by: Daniel Wheeler Reviewed-by: Meenakshikumar Somasundaram Acked-by: Rodrigo Siqueira Signed-off-by: Mustapha Ghaddar Signed-off-by: Alex Deucher

drm/amd/display: Update BW alloc after new DMUB logic

2023-01-13T19:56:15+00:00

[WHY] After introducing new DPIA NOTIFICATION we will need to update the exiting BW allocation logic [HOW] Updated the BW alloc source and header files Tested-by: Daniel Wheeler Reviewed-by: Meenakshikumar Somasundaram Acked-by: Rodrigo Siqueira Signed-off-by: Mustapha Ghaddar Signed-off-by: Alex Deucher

drm/amd/display: Add DPIA NOTIFICATION logic

2022-12-15T17:18:18+00:00

[WHY] Adding the new DPIA NOTIFY packets from DMUB As per the design with Cruise to account for 250ms response delay otherwise [HOW] Added th DPIA NOTIFY logic as per DMUB logic Reviewed-by: Nicholas Kazlauskas Acked-by: Jasdeep Dhillon Signed-off-by: Mustapha Ghaddar Signed-off-by: Alex Deucher

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

2022-10-10T21:32:55+00:00

[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

2022-07-14T00:57:05+00:00

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

2022-06-03T20:45:01+00:00

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

2022-06-03T20:44:15+00:00

[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

2022-06-03T20:43:37+00:00

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)

2022-06-01T19:56:48+00:00

[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