gma500: Workaround for Medfield/Cedarview cursor bug (52b6ba09) · Commits · 戴 / test

drivers/staging/gma500/psb_intel_display.c

+14 −0

Original line number	Diff line number	Diff line
		@@ -1278,6 +1278,19 @@ const struct drm_crtc_funcs psb_intel_crtc_funcs = {
		.destroy = psb_intel_crtc_destroy,
		};

		/*
		* Set the default value of cursor control and base register
		* to zero. This is a workaround for h/w defect on Oaktrail
		*/
		static void psb_intel_cursor_init(struct drm_device *dev, int pipe)
		{
		u32 control[3] = { CURACNTR, CURBCNTR, CURCCNTR };
		u32 base[3] = { CURABASE, CURBBASE, CURCBASE };

		REG_WRITE(control[pipe], 0);
		REG_WRITE(base[pipe], 0);
		}

		void psb_intel_crtc_init(struct drm_device *dev, int pipe,
		struct psb_intel_mode_device *mode_dev)
		{
		@@ -1341,6 +1354,7 @@ void psb_intel_crtc_init(struct drm_device *dev, int pipe,
		psb_intel_crtc->mode_set.connectors =
		(struct drm_connector **) (psb_intel_crtc + 1);
		psb_intel_crtc->mode_set.num_connectors = 0;
		psb_intel_cursor_init(dev, pipe);
		}

		int psb_intel_get_pipe_from_crtc_id(struct drm_device dev, void data,