From: Andrey Grodzovsky <[email protected]> Avoid enabling CRTC_VERTICAL_INTERRUPT0 twice on resume. It's enabled once from within manage_dm_interrupts in mode set and another explicitly from amdgpu_dm_irq_resume_late. Seems it lead to CRTC hang.
Change-Id: I7d7f29adb0f204fd6b1b2a9b36111cd2cf5bf820 Signed-off-by: Andrey Grodzovsky <[email protected]> Acked-by: Harry Wentland <[email protected]> Reviewed-by: Andrey Grodzovsky <[email protected]> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c | 16 +++++++++++----- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.h | 2 +- 3 files changed, 13 insertions(+), 7 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 b3a9a9058c4a..62be159b1ea5 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -581,7 +581,7 @@ int amdgpu_dm_display_resume(struct amdgpu_device *adev ) ret = drm_atomic_helper_resume(ddev, adev->dm.cached_state); - amdgpu_dm_irq_resume(adev); + amdgpu_dm_irq_resume_late(adev); return ret; } diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c index 682e9c3ad8e5..4aee146a848f 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c @@ -504,8 +504,11 @@ int amdgpu_dm_irq_suspend( DRM_DEBUG_KMS("DM_IRQ: suspend\n"); - /* disable HW interrupt */ - for (src = DC_IRQ_SOURCE_HPD1; src < DAL_IRQ_SOURCES_NUMBER; src++) { + /** + * Disable HW interrupt for HPD and HPDRX only since FLIP and VBLANK + * will be disabled from manage_dm_interrupts on disable CRTC. + */ + for (src = DC_IRQ_SOURCE_HPD1; src < DC_IRQ_SOURCE_HPD6RX; src++) { hnd_list_l = &adev->dm.irq_handler_list_low_tab[src].head; hnd_list_h = &adev->dm.irq_handler_list_high_tab[src]; if (!list_empty(hnd_list_l) || !list_empty(hnd_list_h)) @@ -544,7 +547,7 @@ int amdgpu_dm_irq_resume_early(struct amdgpu_device *adev) return 0; } -int amdgpu_dm_irq_resume(struct amdgpu_device *adev) +int amdgpu_dm_irq_resume_late(struct amdgpu_device *adev) { int src; struct list_head *hnd_list_h, *hnd_list_l; @@ -554,8 +557,11 @@ int amdgpu_dm_irq_resume(struct amdgpu_device *adev) DRM_DEBUG_KMS("DM_IRQ: resume\n"); - /* re-enable HW interrupt */ - for (src = DC_IRQ_SOURCE_HPD1; src < DAL_IRQ_SOURCES_NUMBER; src++) { + /** + * Renable HW interrupt for HPD and only since FLIP and VBLANK + * will be enabled from manage_dm_interrupts on enable CRTC. + */ + for (src = DC_IRQ_SOURCE_HPD1; src < DC_IRQ_SOURCE_HPD6; src++) { hnd_list_l = &adev->dm.irq_handler_list_low_tab[src].head; hnd_list_h = &adev->dm.irq_handler_list_high_tab[src]; if (!list_empty(hnd_list_l) || !list_empty(hnd_list_h)) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.h index 9339861c8897..9d3007634266 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.h @@ -117,6 +117,6 @@ int amdgpu_dm_irq_suspend(struct amdgpu_device *adev); * */ int amdgpu_dm_irq_resume_early(struct amdgpu_device *adev); -int amdgpu_dm_irq_resume(struct amdgpu_device *adev); +int amdgpu_dm_irq_resume_late(struct amdgpu_device *adev); #endif /* __AMDGPU_DM_IRQ_H__ */ -- 2.11.0 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
