Merge tag 'imx-drm-next-2022-05-04' of git://git.pengutronix.de/pza/linux into drm-next

drm/imx: various cleanups

- Use swap() instead of open-coding in ipu-image-convert.
- Use devm_platform_ioremap_resource() helper in imx-tve.
- Make static channel_offsets array const in ipu-dc.
- Remove redundant zpos, color encoding and range initialization.
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220504144628.3954620-1-p.zabel@pengutronix.de

drivers/gpu/drm/imx/imx-tve.c

@@ -526,7 +526,6 @@ static int imx_tve_probe(struct platform_device *pdev)
 	struct device_node *np = dev->of_node;
 	struct device_node *ddc_node;
 	struct imx_tve *tve;
-	struct resource *res;
 	void __iomem *base;
 	unsigned int val;
 	int irq;
@@ -568,8 +567,7 @@ static int imx_tve_probe(struct platform_device *pdev)
 		}
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	base = devm_ioremap_resource(dev, res);
+	base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(base))
 		return PTR_ERR(base);
 

drivers/gpu/drm/imx/ipuv3-plane.c

@@ -297,7 +297,6 @@ void ipu_plane_disable_deferred(struct drm_plane *plane)
 
 static void ipu_plane_state_reset(struct drm_plane *plane)
 {
-	unsigned int zpos = (plane->type == DRM_PLANE_TYPE_PRIMARY) ? 0 : 1;
 	struct ipu_plane_state *ipu_state;
 
 	if (plane->state) {
@@ -309,13 +308,8 @@ static void ipu_plane_state_reset(struct drm_plane *plane)
 
 	ipu_state = kzalloc(sizeof(*ipu_state), GFP_KERNEL);
 
-	if (ipu_state) {
+	if (ipu_state)
 		__drm_atomic_helper_plane_reset(plane, &ipu_state->base);
-		ipu_state->base.zpos = zpos;
-		ipu_state->base.normalized_zpos = zpos;
-		ipu_state->base.color_encoding = DRM_COLOR_YCBCR_BT601;
-		ipu_state->base.color_range = DRM_COLOR_YCBCR_LIMITED_RANGE;
-	}
 }
 
 static struct drm_plane_state *

drivers/gpu/ipu-v3/ipu-dc.c

@@ -344,8 +344,9 @@ int ipu_dc_init(struct ipu_soc *ipu, struct device *dev,
 		unsigned long base, unsigned long template_base)
 {
 	struct ipu_dc_priv *priv;
-	static int channel_offsets[] = { 0, 0x1c, 0x38, 0x54, 0x58, 0x5c,
-		0x78, 0, 0x94, 0xb4};
+	static const int channel_offsets[] = {
+		0, 0x1c, 0x38, 0x54, 0x58, 0x5c, 0x78, 0, 0x94, 0xb4
+	};
 	int i;
 
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);

drivers/gpu/ipu-v3/ipu-image-convert.c

@@ -990,7 +990,7 @@ static int calc_tile_offsets_planar(struct ipu_image_convert_ctx *ctx,
 	const struct ipu_image_pixfmt *fmt = image->fmt;
 	unsigned int row, col, tile = 0;
 	u32 H, top, y_stride, uv_stride;
-	u32 uv_row_off, uv_col_off, uv_off, u_off, v_off, tmp;
+	u32 uv_row_off, uv_col_off, uv_off, u_off, v_off;
 	u32 y_row_off, y_col_off, y_off;
 	u32 y_size, uv_size;
 
@@ -1021,11 +1021,8 @@ static int calc_tile_offsets_planar(struct ipu_image_convert_ctx *ctx,
 
 			u_off = y_size - y_off + uv_off;
 			v_off = (fmt->uv_packed) ? 0 : u_off + uv_size;
-			if (fmt->uv_swapped) {
-				tmp = u_off;
-				u_off = v_off;
-				v_off = tmp;
-			}
+			if (fmt->uv_swapped)
+				swap(u_off, v_off);
 
 			image->tile[tile].offset = y_off;
 			image->tile[tile].u_off = u_off;