diff options
| author | Andrey Grodzovsky <andrey.grodzovsky@amd.com> | 2018-09-12 16:38:57 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-09-13 15:14:11 -0500 |
| commit | c37e2d29f0fbc933508637d7129a8f079b06ab40 (patch) | |
| tree | a57dea0f6f39b09d760f8e1d96b565f74eec1b5e /drivers/gpu/drm/amd/display/amdgpu_dm | |
| parent | 0c70dd4985b3ad440ec6c51f34f2b47877edf8fd (diff) | |
drm/amd/display: Fix pflip IRQ status after gpu reset.
Problem:
After GPU reset pflip completion IRQ is disabled and hence
any subsequent mode set or plane update leads to hang.
Fix:
Unless acrtc->otg_inst is initialized to -1 during display
block initializtion then durng resume from GPU reset
amdgpu_irq_gpu_reset_resume_helper will override CRTC 0 pflip
IRQ value with whatever value was on every other unused CRTC because
dm_irq_state will do irq_source = dal_irq_type + acrtc->otg_inst
where acrtc->otg_inst will be 0 for every unused CRTC.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index eccae63d3ef1..23ddf54b7dee 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -3424,6 +3424,7 @@ static int amdgpu_dm_crtc_init(struct amdgpu_display_manager *dm, acrtc->crtc_id = crtc_index; acrtc->base.enabled = false; + acrtc->otg_inst = -1; dm->adev->mode_info.crtcs[crtc_index] = acrtc; drm_crtc_enable_color_mgmt(&acrtc->base, MAX_COLOR_LUT_ENTRIES, |