drm/gma500: Add generic cursor functions (38945be6) · Commits · EulixOS / Software / Kernel

drivers/gpu/drm/gma500/gma_display.c

+151 −0

Original line number	Diff line number	Diff line
		@@ -327,6 +327,157 @@ void gma_crtc_dpms(struct drm_crtc *crtc, int mode)
		REG_WRITE(DSPARB, 0x3F3E);
		}

		int gma_crtc_cursor_set(struct drm_crtc *crtc,
		struct drm_file *file_priv,
		uint32_t handle,
		uint32_t width, uint32_t height)
		{
		struct drm_device *dev = crtc->dev;
		struct drm_psb_private *dev_priv = dev->dev_private;
		struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
		int pipe = psb_intel_crtc->pipe;
		uint32_t control = (pipe == 0) ? CURACNTR : CURBCNTR;
		uint32_t base = (pipe == 0) ? CURABASE : CURBBASE;
		uint32_t temp;
		size_t addr = 0;
		struct gtt_range *gt;
		struct gtt_range *cursor_gt = psb_intel_crtc->cursor_gt;
		struct drm_gem_object *obj;
		void tmp_dst, tmp_src;
		int ret = 0, i, cursor_pages;

		/* If we didn't get a handle then turn the cursor off */
		if (!handle) {
		temp = CURSOR_MODE_DISABLE;

		if (gma_power_begin(dev, false)) {
		REG_WRITE(control, temp);
		REG_WRITE(base, 0);
		gma_power_end(dev);
		}

		/* Unpin the old GEM object */
		if (psb_intel_crtc->cursor_obj) {
		gt = container_of(psb_intel_crtc->cursor_obj,
		struct gtt_range, gem);
		psb_gtt_unpin(gt);
		drm_gem_object_unreference(psb_intel_crtc->cursor_obj);
		psb_intel_crtc->cursor_obj = NULL;
		}

		return 0;
		}

		/* Currently we only support 64x64 cursors */
		if (width != 64 \|\| height != 64) {
		dev_dbg(dev->dev, "We currently only support 64x64 cursors\n");
		return -EINVAL;
		}

		obj = drm_gem_object_lookup(dev, file_priv, handle);
		if (!obj)
		return -ENOENT;

		if (obj->size < width * height * 4) {
		dev_dbg(dev->dev, "Buffer is too small\n");
		ret = -ENOMEM;
		goto unref_cursor;
		}

		gt = container_of(obj, struct gtt_range, gem);

		/* Pin the memory into the GTT */
		ret = psb_gtt_pin(gt);
		if (ret) {
		dev_err(dev->dev, "Can not pin down handle 0x%x\n", handle);
		goto unref_cursor;
		}

		if (dev_priv->ops->cursor_needs_phys) {
		if (cursor_gt == NULL) {
		dev_err(dev->dev, "No hardware cursor mem available");
		ret = -ENOMEM;
		goto unref_cursor;
		}

		/* Prevent overflow */
		if (gt->npage > 4)
		cursor_pages = 4;
		else
		cursor_pages = gt->npage;

		/* Copy the cursor to cursor mem */
		tmp_dst = dev_priv->vram_addr + cursor_gt->offset;
		for (i = 0; i < cursor_pages; i++) {
		tmp_src = kmap(gt->pages[i]);
		memcpy(tmp_dst, tmp_src, PAGE_SIZE);
		kunmap(gt->pages[i]);
		tmp_dst += PAGE_SIZE;
		}

		addr = psb_intel_crtc->cursor_addr;
		} else {
		addr = gt->offset;
		psb_intel_crtc->cursor_addr = addr;
		}

		temp = 0;
		/* set the pipe for the cursor */
		temp \|= (pipe << 28);
		temp \|= CURSOR_MODE_64_ARGB_AX \| MCURSOR_GAMMA_ENABLE;

		if (gma_power_begin(dev, false)) {
		REG_WRITE(control, temp);
		REG_WRITE(base, addr);
		gma_power_end(dev);
		}

		/* unpin the old bo */
		if (psb_intel_crtc->cursor_obj) {
		gt = container_of(psb_intel_crtc->cursor_obj,
		struct gtt_range, gem);
		psb_gtt_unpin(gt);
		drm_gem_object_unreference(psb_intel_crtc->cursor_obj);
		}

		psb_intel_crtc->cursor_obj = obj;
		return ret;

		unref_cursor:
		drm_gem_object_unreference(obj);
		return ret;
		}

		int gma_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
		{
		struct drm_device *dev = crtc->dev;
		struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
		int pipe = psb_intel_crtc->pipe;
		uint32_t temp = 0;
		uint32_t addr;

		if (x < 0) {
		temp \|= (CURSOR_POS_SIGN << CURSOR_X_SHIFT);
		x = -x;
		}
		if (y < 0) {
		temp \|= (CURSOR_POS_SIGN << CURSOR_Y_SHIFT);
		y = -y;
		}

		temp \|= ((x & CURSOR_POS_MASK) << CURSOR_X_SHIFT);
		temp \|= ((y & CURSOR_POS_MASK) << CURSOR_Y_SHIFT);

		addr = psb_intel_crtc->cursor_addr;

		if (gma_power_begin(dev, false)) {
		REG_WRITE((pipe == 0) ? CURAPOS : CURBPOS, temp);
		REG_WRITE((pipe == 0) ? CURABASE : CURBBASE, addr);
		gma_power_end(dev);
		}
		return 0;
		}

		bool gma_crtc_mode_fixup(struct drm_crtc *crtc,
		const struct drm_display_mode *mode,
		struct drm_display_mode *adjusted_mode)

drivers/gpu/drm/gma500/gma_display.h

+5 −0

Original line number	Diff line number	Diff line
		@@ -64,6 +64,11 @@ extern bool gma_pipe_has_type(struct drm_crtc *crtc, int type);
		extern void gma_wait_for_vblank(struct drm_device *dev);
		extern int gma_pipe_set_base(struct drm_crtc *crtc, int x, int y,
		struct drm_framebuffer *old_fb);
		extern int gma_crtc_cursor_set(struct drm_crtc *crtc,
		struct drm_file *file_priv,
		uint32_t handle,
		uint32_t width, uint32_t height);
		extern int gma_crtc_cursor_move(struct drm_crtc *crtc, int x, int y);
		extern void gma_crtc_load_lut(struct drm_crtc *crtc);
		extern void gma_crtc_gamma_set(struct drm_crtc crtc, u16 red, u16 *green,
		u16 *blue, u32 start, u32 size);