drm/exynos: use src_x and src_y instead of fb_x and fb_y

It's more reasonable to use src_x and src_y to represent source as
counterpart of destination(crtc). Already we are using src_width and
src_height for width and height of source.
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drivers/gpu/drm/exynos/exynos7_drm_decon.c

@@ -440,8 +440,8 @@ static void decon_win_commit(struct exynos_drm_crtc *crtc, unsigned int win)
 	writel(plane->fb_height, ctx->regs + VIDW_WHOLE_Y(win));
 
 	/* offset from the start of the buffer to read */
-	writel(plane->fb_x, ctx->regs + VIDW_OFFSET_X(win));
-	writel(plane->fb_y, ctx->regs + VIDW_OFFSET_Y(win));
+	writel(plane->src_x, ctx->regs + VIDW_OFFSET_X(win));
+	writel(plane->src_y, ctx->regs + VIDW_OFFSET_Y(win));
 
 	DRM_DEBUG_KMS("start addr = 0x%lx\n",
 			(unsigned long)val);

drivers/gpu/drm/exynos/exynos_drm_drv.h

@@ -47,14 +47,14 @@ enum exynos_drm_output_type {
  * Exynos drm common overlay structure.
  *
  * @base: plane object
- * @fb_x: offset x on a framebuffer to be displayed.
+ * @src_x: offset x on a framebuffer to be displayed.
  *	- the unit is screen coordinates.
- * @fb_y: offset y on a framebuffer to be displayed.
+ * @src_y: offset y on a framebuffer to be displayed.
  *	- the unit is screen coordinates.
- * @fb_width: width of a framebuffer.
- * @fb_height: height of a framebuffer.
  * @src_width: width of a partial image to be displayed from framebuffer.
  * @src_height: height of a partial image to be displayed from framebuffer.
+ * @fb_width: width of a framebuffer.
+ * @fb_height: height of a framebuffer.
  * @crtc_x: offset x on hardware screen.
  * @crtc_y: offset y on hardware screen.
  * @crtc_width: window width to be displayed (hardware screen).
@@ -85,12 +85,12 @@ enum exynos_drm_output_type {
 
 struct exynos_drm_plane {
 	struct drm_plane base;
-	unsigned int fb_x;
-	unsigned int fb_y;
-	unsigned int fb_width;
-	unsigned int fb_height;
+	unsigned int src_x;
+	unsigned int src_y;
 	unsigned int src_width;
 	unsigned int src_height;
+	unsigned int fb_width;
+	unsigned int fb_height;
 	unsigned int crtc_x;
 	unsigned int crtc_y;
 	unsigned int crtc_width;

drivers/gpu/drm/exynos/exynos_drm_fimd.c

@@ -653,8 +653,8 @@ static void fimd_win_commit(struct exynos_drm_crtc *crtc, unsigned int win)
 	fimd_shadow_protect_win(ctx, win, true);
 
 
-	offset = plane->fb_x * (plane->bpp >> 3);
-	offset += plane->fb_y * plane->pitch;
+	offset = plane->src_x * (plane->bpp >> 3);
+	offset += plane->src_y * plane->pitch;
 
 	/* buffer start address */
 	dma_addr = plane->dma_addr[0] + offset;

drivers/gpu/drm/exynos/exynos_drm_plane.c

@@ -111,12 +111,12 @@ void exynos_plane_mode_set(struct drm_plane *plane, struct drm_crtc *crtc,
 	}
 
 	/* set drm framebuffer data. */
-	exynos_plane->fb_x = src_x;
-	exynos_plane->fb_y = src_y;
-	exynos_plane->fb_width = fb->width;
-	exynos_plane->fb_height = fb->height;
+	exynos_plane->src_x = src_x;
+	exynos_plane->src_y = src_y;
 	exynos_plane->src_width = src_w;
 	exynos_plane->src_height = src_h;
+	exynos_plane->fb_width = fb->width;
+	exynos_plane->fb_height = fb->height;
 	exynos_plane->bpp = fb->bits_per_pixel;
 	exynos_plane->pitch = fb->pitches[0];
 	exynos_plane->pixel_format = fb->pixel_format;

drivers/gpu/drm/exynos/exynos_mixer.c

@@ -457,8 +457,8 @@ static void vp_video_buffer(struct mixer_context *ctx, int win)
 	vp_reg_write(res, VP_SRC_WIDTH, plane->src_width);
 	vp_reg_write(res, VP_SRC_HEIGHT, plane->src_height);
 	vp_reg_write(res, VP_SRC_H_POSITION,
-			VP_SRC_H_POSITION_VAL(plane->fb_x));
-	vp_reg_write(res, VP_SRC_V_POSITION, plane->fb_y);
+			VP_SRC_H_POSITION_VAL(plane->src_x));
+	vp_reg_write(res, VP_SRC_V_POSITION, plane->src_y);
 
 	vp_reg_write(res, VP_DST_WIDTH, plane->crtc_width);
 	vp_reg_write(res, VP_DST_H_POSITION, plane->crtc_x);
@@ -561,8 +561,8 @@ static void mixer_graph_buffer(struct mixer_context *ctx, int win)
 
 	/* converting dma address base and source offset */
 	dma_addr = plane->dma_addr[0]
-		+ (plane->fb_x * plane->bpp >> 3)
-		+ (plane->fb_y * plane->pitch);
+		+ (plane->src_x * plane->bpp >> 3)
+		+ (plane->src_y * plane->pitch);
 	src_x_offset = 0;
 	src_y_offset = 0;