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Date:   Sun, 12 Apr 2020 17:59:16 -0300
From:   "Carlos E. C. Barbosa" <barbosa.carlos.ec@...il.com>
To:     Helen Koike <helen.koike@...labora.com>,
        Shuah Khan <skhan@...uxfoundation.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        lkcamp@...ts.libreplanetbr.org
Subject: [PATCH v4] media: vimc: get pixformat info from v4l2_format_info

From: "Carlos E.C. Barbosa" <barbosa.carlos.ec@...il.com>

There is overlapping code over two distinct lists. This repurposes
vimc_pix_map for mapping formats and remaps the calls to the matching
v4l2_format_info.

Signed-off-by: Carlos E. C. Barbosa <barbosa.carlos.ec@...il.com>

---

Changes in v2:
As advised by Helen Koike and Hans Verkuil, the const qualifiers are
not
removed, the bayer flag is kept and the unnecessary changes are not
made.

Changes in v3:
Change declaration order of variables and some minor style changes.

Changes in v4:
Unused variables were removed.

v4l2-compliance -m /dev/media0 output:
https://pastebin.com/F98792eW
---
 drivers/media/platform/vimc/vimc-capture.c | 14 ++++++++-----
 drivers/media/platform/vimc/vimc-common.c  | 23 ----------------------
 drivers/media/platform/vimc/vimc-common.h  |  2 --
 drivers/media/platform/vimc/vimc-debayer.c |  7 +++++--
 drivers/media/platform/vimc/vimc-scaler.c  |  8 ++++++--
 drivers/media/platform/vimc/vimc-sensor.c  |  9 +++++++--
 6 files changed, 27 insertions(+), 36 deletions(-)

diff --git a/drivers/media/platform/vimc/vimc-capture.c b/drivers/media/platform/vimc/vimc-capture.c
index 23e740c1c5c0..4f85e0bb8f27 100644
--- a/drivers/media/platform/vimc/vimc-capture.c
+++ b/drivers/media/platform/vimc/vimc-capture.c
@@ -85,6 +85,7 @@ static int vimc_cap_try_fmt_vid_cap(struct file *file, void *priv,
 				    struct v4l2_format *f)
 {
 	struct v4l2_pix_format *format = &f->fmt.pix;
+	const struct v4l2_format_info *vinfo;
 	const struct vimc_pix_map *vpix;
 
 	format->width = clamp_t(u32, format->width, VIMC_FRAME_MIN_WIDTH,
@@ -94,12 +95,13 @@ static int vimc_cap_try_fmt_vid_cap(struct file *file, void *priv,
 
 	/* Don't accept a pixelformat that is not on the table */
 	vpix = vimc_pix_map_by_pixelformat(format->pixelformat);
-	if (!vpix) {
+	if (!vpix)
 		format->pixelformat = fmt_default.pixelformat;
-		vpix = vimc_pix_map_by_pixelformat(format->pixelformat);
-	}
+
+	vinfo = v4l2_format_info(format->pixelformat);
+
 	/* TODO: Add support for custom bytesperline values */
-	format->bytesperline = format->width * vpix->bpp;
+	format->bytesperline = format->width * vinfo->bpp[0];
 	format->sizeimage = format->bytesperline * format->height;
 
 	if (format->field == V4L2_FIELD_ANY)
@@ -386,6 +388,7 @@ struct vimc_ent_device *vimc_cap_add(struct vimc_device *vimc,
 				     const char *vcfg_name)
 {
 	struct v4l2_device *v4l2_dev = &vimc->v4l2_dev;
+	const struct v4l2_format_info *vinfo;
 	const struct vimc_pix_map *vpix;
 	struct vimc_cap_device *vcap;
 	struct video_device *vdev;
@@ -435,7 +438,8 @@ struct vimc_ent_device *vimc_cap_add(struct vimc_device *vimc,
 	/* Set default frame format */
 	vcap->format = fmt_default;
 	vpix = vimc_pix_map_by_pixelformat(vcap->format.pixelformat);
-	vcap->format.bytesperline = vcap->format.width * vpix->bpp;
+	vinfo = v4l2_format_info(vpix->pixelformat);
+	vcap->format.bytesperline = vcap->format.width * vinfo->bpp[0];
 	vcap->format.sizeimage = vcap->format.bytesperline *
 				 vcap->format.height;
 
diff --git a/drivers/media/platform/vimc/vimc-common.c b/drivers/media/platform/vimc/vimc-common.c
index c95c17c048f2..fc881daee627 100644
--- a/drivers/media/platform/vimc/vimc-common.c
+++ b/drivers/media/platform/vimc/vimc-common.c
@@ -21,19 +21,16 @@ static const struct vimc_pix_map vimc_pix_map_list[] = {
 	{
 		.code = MEDIA_BUS_FMT_BGR888_1X24,
 		.pixelformat = V4L2_PIX_FMT_BGR24,
-		.bpp = 3,
 		.bayer = false,
 	},
 	{
 		.code = MEDIA_BUS_FMT_RGB888_1X24,
 		.pixelformat = V4L2_PIX_FMT_RGB24,
-		.bpp = 3,
 		.bayer = false,
 	},
 	{
 		.code = MEDIA_BUS_FMT_ARGB8888_1X32,
 		.pixelformat = V4L2_PIX_FMT_ARGB32,
-		.bpp = 4,
 		.bayer = false,
 	},
 
@@ -41,49 +38,41 @@ static const struct vimc_pix_map vimc_pix_map_list[] = {
 	{
 		.code = MEDIA_BUS_FMT_SBGGR8_1X8,
 		.pixelformat = V4L2_PIX_FMT_SBGGR8,
-		.bpp = 1,
 		.bayer = true,
 	},
 	{
 		.code = MEDIA_BUS_FMT_SGBRG8_1X8,
 		.pixelformat = V4L2_PIX_FMT_SGBRG8,
-		.bpp = 1,
 		.bayer = true,
 	},
 	{
 		.code = MEDIA_BUS_FMT_SGRBG8_1X8,
 		.pixelformat = V4L2_PIX_FMT_SGRBG8,
-		.bpp = 1,
 		.bayer = true,
 	},
 	{
 		.code = MEDIA_BUS_FMT_SRGGB8_1X8,
 		.pixelformat = V4L2_PIX_FMT_SRGGB8,
-		.bpp = 1,
 		.bayer = true,
 	},
 	{
 		.code = MEDIA_BUS_FMT_SBGGR10_1X10,
 		.pixelformat = V4L2_PIX_FMT_SBGGR10,
-		.bpp = 2,
 		.bayer = true,
 	},
 	{
 		.code = MEDIA_BUS_FMT_SGBRG10_1X10,
 		.pixelformat = V4L2_PIX_FMT_SGBRG10,
-		.bpp = 2,
 		.bayer = true,
 	},
 	{
 		.code = MEDIA_BUS_FMT_SGRBG10_1X10,
 		.pixelformat = V4L2_PIX_FMT_SGRBG10,
-		.bpp = 2,
 		.bayer = true,
 	},
 	{
 		.code = MEDIA_BUS_FMT_SRGGB10_1X10,
 		.pixelformat = V4L2_PIX_FMT_SRGGB10,
-		.bpp = 2,
 		.bayer = true,
 	},
 
@@ -91,25 +80,21 @@ static const struct vimc_pix_map vimc_pix_map_list[] = {
 	{
 		.code = MEDIA_BUS_FMT_SBGGR10_ALAW8_1X8,
 		.pixelformat = V4L2_PIX_FMT_SBGGR10ALAW8,
-		.bpp = 1,
 		.bayer = true,
 	},
 	{
 		.code = MEDIA_BUS_FMT_SGBRG10_ALAW8_1X8,
 		.pixelformat = V4L2_PIX_FMT_SGBRG10ALAW8,
-		.bpp = 1,
 		.bayer = true,
 	},
 	{
 		.code = MEDIA_BUS_FMT_SGRBG10_ALAW8_1X8,
 		.pixelformat = V4L2_PIX_FMT_SGRBG10ALAW8,
-		.bpp = 1,
 		.bayer = true,
 	},
 	{
 		.code = MEDIA_BUS_FMT_SRGGB10_ALAW8_1X8,
 		.pixelformat = V4L2_PIX_FMT_SRGGB10ALAW8,
-		.bpp = 1,
 		.bayer = true,
 	},
 
@@ -117,49 +102,41 @@ static const struct vimc_pix_map vimc_pix_map_list[] = {
 	{
 		.code = MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8,
 		.pixelformat = V4L2_PIX_FMT_SBGGR10DPCM8,
-		.bpp = 1,
 		.bayer = true,
 	},
 	{
 		.code = MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8,
 		.pixelformat = V4L2_PIX_FMT_SGBRG10DPCM8,
-		.bpp = 1,
 		.bayer = true,
 	},
 	{
 		.code = MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8,
 		.pixelformat = V4L2_PIX_FMT_SGRBG10DPCM8,
-		.bpp = 1,
 		.bayer = true,
 	},
 	{
 		.code = MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8,
 		.pixelformat = V4L2_PIX_FMT_SRGGB10DPCM8,
-		.bpp = 1,
 		.bayer = true,
 	},
 	{
 		.code = MEDIA_BUS_FMT_SBGGR12_1X12,
 		.pixelformat = V4L2_PIX_FMT_SBGGR12,
-		.bpp = 2,
 		.bayer = true,
 	},
 	{
 		.code = MEDIA_BUS_FMT_SGBRG12_1X12,
 		.pixelformat = V4L2_PIX_FMT_SGBRG12,
-		.bpp = 2,
 		.bayer = true,
 	},
 	{
 		.code = MEDIA_BUS_FMT_SGRBG12_1X12,
 		.pixelformat = V4L2_PIX_FMT_SGRBG12,
-		.bpp = 2,
 		.bayer = true,
 	},
 	{
 		.code = MEDIA_BUS_FMT_SRGGB12_1X12,
 		.pixelformat = V4L2_PIX_FMT_SRGGB12,
-		.bpp = 2,
 		.bayer = true,
 	},
 };
diff --git a/drivers/media/platform/vimc/vimc-common.h b/drivers/media/platform/vimc/vimc-common.h
index 616d5a6b0754..838d5df7b9ed 100644
--- a/drivers/media/platform/vimc/vimc-common.h
+++ b/drivers/media/platform/vimc/vimc-common.h
@@ -62,7 +62,6 @@ do {									\
  * struct vimc_pix_map - maps media bus code with v4l2 pixel format
  *
  * @code:		media bus format code defined by MEDIA_BUS_FMT_* macros
- * @bbp:		number of bytes each pixel occupies
  * @pixelformat:	pixel format devined by V4L2_PIX_FMT_* macros
  *
  * Struct which matches the MEDIA_BUS_FMT_* codes with the corresponding
@@ -70,7 +69,6 @@ do {									\
  */
 struct vimc_pix_map {
 	unsigned int code;
-	unsigned int bpp;
 	u32 pixelformat;
 	bool bayer;
 };
diff --git a/drivers/media/platform/vimc/vimc-debayer.c b/drivers/media/platform/vimc/vimc-debayer.c
index baf6bf9f65b5..c141a307851c 100644
--- a/drivers/media/platform/vimc/vimc-debayer.c
+++ b/drivers/media/platform/vimc/vimc-debayer.c
@@ -303,6 +303,7 @@ static int vimc_deb_s_stream(struct v4l2_subdev *sd, int enable)
 	struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
 
 	if (enable) {
+		const struct v4l2_format_info *vinfo;
 		const struct vimc_pix_map *vpix;
 		unsigned int frame_size;
 
@@ -311,12 +312,14 @@ static int vimc_deb_s_stream(struct v4l2_subdev *sd, int enable)
 
 		/* Calculate the frame size of the source pad */
 		vpix = vimc_pix_map_by_code(vdeb->src_code);
+		vinfo = v4l2_format_info(vpix->pixelformat);
 		frame_size = vdeb->sink_fmt.width * vdeb->sink_fmt.height *
-				vpix->bpp;
+				vinfo->bpp[0];
 
 		/* Save the bytes per pixel of the sink */
 		vpix = vimc_pix_map_by_code(vdeb->sink_fmt.code);
-		vdeb->sink_bpp = vpix->bpp;
+		vinfo = v4l2_format_info(vpix->pixelformat);
+		vdeb->sink_bpp = vinfo->bpp[0];
 
 		/* Get the corresponding pixel map from the table */
 		vdeb->sink_pix_map =
diff --git a/drivers/media/platform/vimc/vimc-scaler.c b/drivers/media/platform/vimc/vimc-scaler.c
index 7521439747c5..9429aeea9cee 100644
--- a/drivers/media/platform/vimc/vimc-scaler.c
+++ b/drivers/media/platform/vimc/vimc-scaler.c
@@ -180,8 +180,10 @@ static void vimc_sca_adjust_sink_fmt(struct v4l2_mbus_framefmt *fmt)
 
 	/* Only accept code in the pix map table in non bayer format */
 	vpix = vimc_pix_map_by_code(fmt->code);
-	if (!vpix || vpix->bayer)
+	if (!vpix || vpix->bayer) {
 		fmt->code = sink_fmt_default.code;
+		vpix = vimc_pix_map_by_code(fmt->code);
+	}
 
 	fmt->width = clamp_t(u32, fmt->width, VIMC_FRAME_MIN_WIDTH,
 			     VIMC_FRAME_MAX_WIDTH) & ~1;
@@ -331,6 +333,7 @@ static int vimc_sca_s_stream(struct v4l2_subdev *sd, int enable)
 	struct vimc_sca_device *vsca = v4l2_get_subdevdata(sd);
 
 	if (enable) {
+		const struct v4l2_format_info *vinfo;
 		const struct vimc_pix_map *vpix;
 		unsigned int frame_size;
 
@@ -339,7 +342,8 @@ static int vimc_sca_s_stream(struct v4l2_subdev *sd, int enable)
 
 		/* Save the bytes per pixel of the sink */
 		vpix = vimc_pix_map_by_code(vsca->sink_fmt.code);
-		vsca->bpp = vpix->bpp;
+		vinfo = v4l2_format_info(vpix->pixelformat);
+		vsca->bpp = vinfo->bpp[0];
 
 		/* Calculate the width in bytes of the src frame */
 		vsca->src_line_size = vsca->crop_rect.width *
diff --git a/drivers/media/platform/vimc/vimc-sensor.c b/drivers/media/platform/vimc/vimc-sensor.c
index 92daee58209e..fac2260b939f 100644
--- a/drivers/media/platform/vimc/vimc-sensor.c
+++ b/drivers/media/platform/vimc/vimc-sensor.c
@@ -102,10 +102,13 @@ static void vimc_sen_tpg_s_format(struct vimc_sen_device *vsen)
 {
 	const struct vimc_pix_map *vpix =
 				vimc_pix_map_by_code(vsen->mbus_format.code);
+	const struct v4l2_format_info *vinfo =
+				v4l2_format_info(vpix->pixelformat);
 
 	tpg_reset_source(&vsen->tpg, vsen->mbus_format.width,
 			 vsen->mbus_format.height, vsen->mbus_format.field);
-	tpg_s_bytesperline(&vsen->tpg, 0, vsen->mbus_format.width * vpix->bpp);
+	tpg_s_bytesperline(&vsen->tpg, 0,
+			   vsen->mbus_format.width * vinfo->bpp[0]);
 	tpg_s_buf_height(&vsen->tpg, vsen->mbus_format.height);
 	tpg_s_fourcc(&vsen->tpg, vpix->pixelformat);
 	/* TODO: add support for V4L2_FIELD_ALTERNATE */
@@ -198,12 +201,14 @@ static int vimc_sen_s_stream(struct v4l2_subdev *sd, int enable)
 				container_of(sd, struct vimc_sen_device, sd);
 
 	if (enable) {
+		const struct v4l2_format_info *vinfo;
 		const struct vimc_pix_map *vpix;
 		unsigned int frame_size;
 
 		/* Calculate the frame size */
 		vpix = vimc_pix_map_by_code(vsen->mbus_format.code);
-		frame_size = vsen->mbus_format.width * vpix->bpp *
+		vinfo = v4l2_format_info(vpix->pixelformat);
+		frame_size = vsen->mbus_format.width * vinfo->bpp[0] *
 			     vsen->mbus_format.height;
 
 		/*
-- 
2.26.0

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