Loading drivers/gpu/drm/rockchip/rockchip_drm_fb.c +15 −0 Original line number Diff line number Diff line Loading @@ -176,6 +176,21 @@ static void rockchip_crtc_wait_for_update(struct drm_crtc *crtc) crtc_funcs->wait_for_update(crtc); } /* * We can't use drm_atomic_helper_wait_for_vblanks() because rk3288 and rk3066 * have hardware counters for neither vblanks nor scanlines, which results in * a race where: * | <-- HW vsync irq and reg take effect * plane_commit --> | * get_vblank and wait --> | * | <-- handle_vblank, vblank->count + 1 * cleanup_fb --> | * iommu crash --> | * | <-- HW vsync irq and reg take effect * * This function is equivalent but uses rockchip_crtc_wait_for_update() instead * of waiting for vblank_count to change. */ static void rockchip_atomic_wait_for_complete(struct drm_device *dev, struct drm_atomic_state *old_state) { Loading Loading
drivers/gpu/drm/rockchip/rockchip_drm_fb.c +15 −0 Original line number Diff line number Diff line Loading @@ -176,6 +176,21 @@ static void rockchip_crtc_wait_for_update(struct drm_crtc *crtc) crtc_funcs->wait_for_update(crtc); } /* * We can't use drm_atomic_helper_wait_for_vblanks() because rk3288 and rk3066 * have hardware counters for neither vblanks nor scanlines, which results in * a race where: * | <-- HW vsync irq and reg take effect * plane_commit --> | * get_vblank and wait --> | * | <-- handle_vblank, vblank->count + 1 * cleanup_fb --> | * iommu crash --> | * | <-- HW vsync irq and reg take effect * * This function is equivalent but uses rockchip_crtc_wait_for_update() instead * of waiting for vblank_count to change. */ static void rockchip_atomic_wait_for_complete(struct drm_device *dev, struct drm_atomic_state *old_state) { Loading
John Keeping <john@metanate.com>John Keeping <john@metanate.com>