drm/exynos: consistent use of cpp

A recent commit (272725c7db4da1fd3229d944fc76d2e98e3a144e) has removed
the use of 'bits_per_pixel' in DRM. However the corresponding Exynos
driver code still uses the ambiguous 'bpp', even though it is now
initialized from fb->cpp[0].

Consistenly use 'cpp' in FIMD, DECON7 and DECON5433 drivers.

Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>

drivers/gpu/drm/exynos/exynos5433_drm_decon.c

@@ -288,7 +288,7 @@ static void decon_win_set_pixfmt(struct decon_context *ctx, unsigned int win,
 		return;
 	}
 
-	DRM_DEBUG_KMS("bpp = %u\n", fb->format->cpp[0] * 8);
+	DRM_DEBUG_KMS("cpp = %u\n", fb->format->cpp[0]);
 
 	/*
 	 * In case of exynos, setting dma-burst to 16Word causes permanent
@@ -331,7 +331,7 @@ static void decon_update_plane(struct exynos_drm_crtc *crtc,
 	struct decon_context *ctx = crtc->ctx;
 	struct drm_framebuffer *fb = state->base.fb;
 	unsigned int win = plane->index;
-	unsigned int bpp = fb->format->cpp[0];
+	unsigned int cpp = fb->format->cpp[0];
 	unsigned int pitch = fb->pitches[0];
 	dma_addr_t dma_addr = exynos_drm_fb_dma_addr(fb, 0);
 	u32 val;
@@ -367,11 +367,11 @@ static void decon_update_plane(struct exynos_drm_crtc *crtc,
 	writel(val, ctx->addr + DECON_VIDW0xADD1B0(win));
 
 	if (!(ctx->out_type & IFTYPE_HDMI))
-		val = BIT_VAL(pitch - state->crtc.w * bpp, 27, 14)
-			| BIT_VAL(state->crtc.w * bpp, 13, 0);
+		val = BIT_VAL(pitch - state->crtc.w * cpp, 27, 14)
+			| BIT_VAL(state->crtc.w * cpp, 13, 0);
 	else
-		val = BIT_VAL(pitch - state->crtc.w * bpp, 29, 15)
-			| BIT_VAL(state->crtc.w * bpp, 14, 0);
+		val = BIT_VAL(pitch - state->crtc.w * cpp, 29, 15)
+			| BIT_VAL(state->crtc.w * cpp, 14, 0);
 	writel(val, ctx->addr + DECON_VIDW0xADD2(win));
 
 	decon_win_set_pixfmt(ctx, win, fb);

drivers/gpu/drm/exynos/exynos7_drm_decon.c

@@ -321,7 +321,7 @@ static void decon_win_set_pixfmt(struct decon_context *ctx, unsigned int win,
 		break;
 	}
 
-	DRM_DEBUG_KMS("bpp = %d\n", fb->format->cpp[0] * 8);
+	DRM_DEBUG_KMS("cpp = %d\n", fb->format->cpp[0]);
 
 	/*
 	 * In case of exynos, setting dma-burst to 16Word causes permanent
@@ -398,7 +398,7 @@ static void decon_update_plane(struct exynos_drm_crtc *crtc,
 	unsigned int last_x;
 	unsigned int last_y;
 	unsigned int win = plane->index;
-	unsigned int bpp = fb->format->cpp[0];
+	unsigned int cpp = fb->format->cpp[0];
 	unsigned int pitch = fb->pitches[0];
 
 	if (ctx->suspended)
@@ -418,7 +418,7 @@ static void decon_update_plane(struct exynos_drm_crtc *crtc,
 	val = (unsigned long)exynos_drm_fb_dma_addr(fb, 0);
 	writel(val, ctx->regs + VIDW_BUF_START(win));
 
-	padding = (pitch / bpp) - fb->width;
+	padding = (pitch / cpp) - fb->width;
 
 	/* buffer size */
 	writel(fb->width + padding, ctx->regs + VIDW_WHOLE_X(win));

drivers/gpu/drm/exynos/exynos_drm_fimd.c

@@ -718,13 +718,13 @@ static void fimd_update_plane(struct exynos_drm_crtc *crtc,
 	unsigned long val, size, offset;
 	unsigned int last_x, last_y, buf_offsize, line_size;
 	unsigned int win = plane->index;
-	unsigned int bpp = fb->format->cpp[0];
+	unsigned int cpp = fb->format->cpp[0];
 	unsigned int pitch = fb->pitches[0];
 
 	if (ctx->suspended)
 		return;
 
-	offset = state->src.x * bpp;
+	offset = state->src.x * cpp;
 	offset += state->src.y * pitch;
 
 	/* buffer start address */
@@ -743,8 +743,8 @@ static void fimd_update_plane(struct exynos_drm_crtc *crtc,
 			state->crtc.w, state->crtc.h);
 
 	/* buffer size */
-	buf_offsize = pitch - (state->crtc.w * bpp);
-	line_size = state->crtc.w * bpp;
+	buf_offsize = pitch - (state->crtc.w * cpp);
+	line_size = state->crtc.w * cpp;
 	val = VIDW_BUF_SIZE_OFFSET(buf_offsize) |
 		VIDW_BUF_SIZE_PAGEWIDTH(line_size) |
 		VIDW_BUF_SIZE_OFFSET_E(buf_offsize) |