drm: tilcdc: Replace drm_fb_get_bpp_depth() with drm_format_plane_cpp()

The driver needs the number of bytes per pixel, not the bpp and depth
info meant for fbdev compatibility. Use the right API.

In the tilcdc_crtc_mode_set() function compute the hardware register
value directly from the pixel format instead of computing the number of
bits per pixels first.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1476744081-24485-7-git-send-email-laurent.pinchart@ideasonboard.com

drivers/gpu/drm/tilcdc/tilcdc_crtc.c

@@ -72,16 +72,14 @@ static void set_scanout(struct drm_crtc *crtc, struct drm_framebuffer *fb)
 	struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
 	struct drm_device *dev = crtc->dev;
 	struct drm_gem_cma_object *gem;
-	unsigned int depth, bpp;
 	dma_addr_t start, end;
 	u64 dma_base_and_ceiling;
 
-	drm_fb_get_bpp_depth(fb->pixel_format, &depth, &bpp);
 	gem = drm_fb_cma_get_gem_obj(fb, 0);
 
 	start = gem->paddr + fb->offsets[0] +
 		crtc->y * fb->pitches[0] +
-		crtc->x * bpp / 8;
+		crtc->x * drm_format_plane_cpp(fb->pixel_format, 0);
 
 	end = start + (crtc->mode.vdisplay * fb->pitches[0]);
 
@@ -461,16 +459,16 @@ static void tilcdc_crtc_mode_set_nofb(struct drm_crtc *crtc)
 	if (info->tft_alt_mode)
 		reg |= LCDC_TFT_ALT_ENABLE;
 	if (priv->rev == 2) {
-		unsigned int depth, bpp;
-
-		drm_fb_get_bpp_depth(fb->pixel_format, &depth, &bpp);
-		switch (bpp) {
-		case 16:
+		switch (fb->pixel_format) {
+		case DRM_FORMAT_BGR565:
+		case DRM_FORMAT_RGB565:
 			break;
-		case 32:
+		case DRM_FORMAT_XBGR8888:
+		case DRM_FORMAT_XRGB8888:
 			reg |= LCDC_V2_TFT_24BPP_UNPACK;
 			/* fallthrough */
-		case 24:
+		case DRM_FORMAT_BGR888:
+		case DRM_FORMAT_RGB888:
 			reg |= LCDC_V2_TFT_24BPP_MODE;
 			break;
 		default:

drivers/gpu/drm/tilcdc/tilcdc_plane.c

@@ -39,7 +39,7 @@ static int tilcdc_plane_atomic_check(struct drm_plane *plane,
 {
 	struct drm_crtc_state *crtc_state;
 	struct drm_plane_state *old_state = plane->state;
-	unsigned int depth, bpp;
+	unsigned int pitch;
 
 	if (!state->crtc)
 		return 0;
@@ -68,8 +68,9 @@ static int tilcdc_plane_atomic_check(struct drm_plane *plane,
 		return -EINVAL;
 	}
 
-	drm_fb_get_bpp_depth(state->fb->pixel_format, &depth, &bpp);
-	if (state->fb->pitches[0] != crtc_state->mode.hdisplay * bpp / 8) {
+	pitch = crtc_state->mode.hdisplay *
+		drm_format_plane_cpp(state->fb->pixel_format, 0);
+	if (state->fb->pitches[0] != pitch) {
 		dev_err(plane->dev->dev,
 			"Invalid pitch: fb and crtc widths must be the same");
 		return -EINVAL;