[PATCH v2 15/16] media: renesas: rzg2l-cru: Refactor ICnDMR register configuration

[Prabhakar <prabhakar.csengg@xxxxxxxxx>]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>

Refactor the ICnDMR register configuration in
`rzg2l_cru_initialize_image_conv()` by adding a new member `icndmr` in the
`rzg2l_cru_ip_format` structure. This change introduces a new function
`rzg2l_cru_ip_pix_fmt_to_icndmr()` to map the pixel format to its
corresponding ICnDMR value.

Suggested-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
---
 drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h |  5 +++++
 drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c  | 12 ++++++++++++
 .../media/platform/renesas/rzg2l-cru/rzg2l-video.c   | 10 ++++------
 3 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
index 24097df14881..3da9e8e7025a 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
@@ -31,6 +31,8 @@
 #define RZG2L_CRU_MIN_INPUT_HEIGHT	240
 #define RZG2L_CRU_MAX_INPUT_HEIGHT	4095
 
+#define ICnDMR_YCMODE_UYVY		(1 << 4)
+
 enum rzg2l_csi2_pads {
 	RZG2L_CRU_IP_SINK = 0,
 	RZG2L_CRU_IP_SOURCE,
@@ -68,12 +70,14 @@ struct rzg2l_cru_ip {
  * @format: 4CC format identifier (V4L2_PIX_FMT_*)
  * @datatype: MIPI CSI2 data type
  * @bpp: bytes per pixel
+ * @icndmr: ICnDMR register value
  */
 struct rzg2l_cru_ip_format {
 	u32 code;
 	u32 format;
 	u32 datatype;
 	u8 bpp;
+	u32 icndmr;
 };
 
 /**
@@ -165,5 +169,6 @@ struct v4l2_mbus_framefmt *rzg2l_cru_ip_get_src_fmt(struct rzg2l_cru_dev *cru);
 const struct rzg2l_cru_ip_format *rzg2l_cru_ip_code_to_fmt(unsigned int code);
 u8 rzg2l_cru_ip_pix_fmt_to_bpp(u32 format);
 int rzg2l_cru_ip_index_to_pix_fmt(u32 index);
+int rzg2l_cru_ip_pix_fmt_to_icndmr(u32 format);
 
 #endif
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c
index c7bc82bf3f14..9b0563198b50 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c
@@ -17,6 +17,7 @@ static const struct rzg2l_cru_ip_format rzg2l_cru_ip_formats[] = {
 		.format = V4L2_PIX_FMT_UYVY,
 		.datatype = MIPI_CSI2_DT_YUV422_8B,
 		.bpp = 2,
+		.icndmr = ICnDMR_YCMODE_UYVY,
 	},
 };
 
@@ -50,6 +51,17 @@ int rzg2l_cru_ip_index_to_pix_fmt(u32 index)
 	return rzg2l_cru_ip_formats[index].format;
 }
 
+int rzg2l_cru_ip_pix_fmt_to_icndmr(u32 format)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(rzg2l_cru_ip_formats); i++)
+		if (rzg2l_cru_ip_formats[i].format == format)
+			return rzg2l_cru_ip_formats[i].icndmr;
+
+	return -EINVAL;
+}
+
 struct v4l2_mbus_framefmt *rzg2l_cru_ip_get_src_fmt(struct rzg2l_cru_dev *cru)
 {
 	struct v4l2_subdev_state *state;
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
index c32608c557a3..1f25dcff2515 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
@@ -88,7 +88,6 @@
 
 /* CRU Data Output Mode Register */
 #define ICnDMR				0x26c
-#define ICnDMR_YCMODE_UYVY		(1 << 4)
 
 #define RZG2L_TIMEOUT_MS		100
 #define RZG2L_RETRIES			10
@@ -316,6 +315,7 @@ static int rzg2l_cru_initialize_image_conv(struct rzg2l_cru_dev *cru,
 	const struct v4l2_format_info *src_finfo, *dst_finfo;
 	const struct rzg2l_cru_ip_format *cru_ip_fmt;
 	u32 icndmr;
+	int ret;
 
 	cru_ip_fmt = rzg2l_cru_ip_code_to_fmt(ip_sd_fmt->code);
 	if (!cru_ip_fmt)
@@ -327,15 +327,13 @@ static int rzg2l_cru_initialize_image_conv(struct rzg2l_cru_dev *cru,
 	dst_finfo = v4l2_format_info(cru->format.pixelformat);
 
 	/* Output format */
-	switch (cru->format.pixelformat) {
-	case V4L2_PIX_FMT_UYVY:
-		icndmr = ICnDMR_YCMODE_UYVY;
-		break;
-	default:
+	ret = rzg2l_cru_ip_pix_fmt_to_icndmr(cru->format.pixelformat);
+	if (ret < 0) {
 		dev_err(cru->dev, "Invalid pixelformat (0x%x)\n",
 			cru->format.pixelformat);
 		return -EINVAL;
 	}
+	icndmr = ret;
 
 	/* If input and output use same colorspace, do bypass mode */
 	if (v4l2_is_format_yuv(src_finfo) && v4l2_is_format_yuv(dst_finfo))
-- 
2.34.1