diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.19.8/0365-drm-amd-display-Fix-pflip-IRQ-status-after-gpu-reset.patch')
-rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.19.8/0365-drm-amd-display-Fix-pflip-IRQ-status-after-gpu-reset.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/0365-drm-amd-display-Fix-pflip-IRQ-status-after-gpu-reset.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/0365-drm-amd-display-Fix-pflip-IRQ-status-after-gpu-reset.patch new file mode 100644 index 00000000..71b41a6c --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/0365-drm-amd-display-Fix-pflip-IRQ-status-after-gpu-reset.patch @@ -0,0 +1,39 @@ +From 83e8f002f89f2763ffd669abfa796313b49c1ef7 Mon Sep 17 00:00:00 2001 +From: Andrey Grodzovsky <andrey.grodzovsky@amd.com> +Date: Wed, 12 Sep 2018 16:38:57 -0400 +Subject: [PATCH 0365/2940] 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. + +Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com> +Signed-off-by: Kalyan Alle <kalyan.alle@amd.com> +--- + drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 + + 1 file changed, 1 insertion(+) + +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 f6b91235ed44..cb16071e7096 100644 +--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c ++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +@@ -3581,6 +3581,7 @@ 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, +-- +2.17.1 + |