[media] omap3isp: video: Split format info bpp field into width and bpp

The bpp field currently stores the sample width and is aligned to the
next multiple of 8 bits when computing data size in memory. This won't
work anymore for YUYV8_2X8 formats. Split the bpp field into a sample
width and a bytes per pixel value.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/omap3isp/ispccdc.c

@@ -1143,12 +1143,12 @@ static void ccdc_configure(struct isp_ccdc_device *ccdc)
 	fmt_src.which = V4L2_SUBDEV_FORMAT_ACTIVE;
 	if (!v4l2_subdev_call(sensor, pad, get_fmt, NULL, &fmt_src)) {
 		fmt_info = omap3isp_video_format_info(fmt_src.format.code);
-		depth_in = fmt_info->bpp;
+		depth_in = fmt_info->width;
 	}
 
 	fmt_info = omap3isp_video_format_info
 		(isp->isp_ccdc.formats[CCDC_PAD_SINK].code);
-	depth_out = fmt_info->bpp;
+	depth_out = fmt_info->width;
 
 	shift = depth_in - depth_out;
 	omap3isp_configure_bridge(isp, ccdc->input, pdata, shift);
@@ -1179,7 +1179,7 @@ static void ccdc_configure(struct isp_ccdc_device *ccdc)
 		syn_mode &= ~ISPCCDC_SYN_MODE_SDR2RSZ;
 
 	/* Use PACK8 mode for 1byte per pixel formats. */
-	if (omap3isp_video_format_info(format->code)->bpp <= 8)
+	if (omap3isp_video_format_info(format->code)->width <= 8)
 		syn_mode |= ISPCCDC_SYN_MODE_PACK8;
 	else
 		syn_mode &= ~ISPCCDC_SYN_MODE_PACK8;
@@ -2182,7 +2182,7 @@ static bool ccdc_is_shiftable(enum v4l2_mbus_pixelcode in,
 	if (in_info->flavor != out_info->flavor)
 		return false;
 
-	return in_info->bpp - out_info->bpp + additional_shift <= 6;
+	return in_info->width - out_info->width + additional_shift <= 6;
 }
 
 static int ccdc_link_validate(struct v4l2_subdev *sd,

drivers/media/video/omap3isp/ispvideo.c

@@ -53,67 +53,67 @@
 static struct isp_format_info formats[] = {
 	{ V4L2_MBUS_FMT_Y8_1X8, V4L2_MBUS_FMT_Y8_1X8,
 	  V4L2_MBUS_FMT_Y8_1X8, V4L2_MBUS_FMT_Y8_1X8,
-	  V4L2_PIX_FMT_GREY, 8, },
+	  V4L2_PIX_FMT_GREY, 8, 1, },
 	{ V4L2_MBUS_FMT_Y10_1X10, V4L2_MBUS_FMT_Y10_1X10,
 	  V4L2_MBUS_FMT_Y10_1X10, V4L2_MBUS_FMT_Y8_1X8,
-	  V4L2_PIX_FMT_Y10, 10, },
+	  V4L2_PIX_FMT_Y10, 10, 2, },
 	{ V4L2_MBUS_FMT_Y12_1X12, V4L2_MBUS_FMT_Y10_1X10,
 	  V4L2_MBUS_FMT_Y12_1X12, V4L2_MBUS_FMT_Y8_1X8,
-	  V4L2_PIX_FMT_Y12, 12, },
+	  V4L2_PIX_FMT_Y12, 12, 2, },
 	{ V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_MBUS_FMT_SBGGR8_1X8,
 	  V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_MBUS_FMT_SBGGR8_1X8,
-	  V4L2_PIX_FMT_SBGGR8, 8, },
+	  V4L2_PIX_FMT_SBGGR8, 8, 1, },
 	{ V4L2_MBUS_FMT_SGBRG8_1X8, V4L2_MBUS_FMT_SGBRG8_1X8,
 	  V4L2_MBUS_FMT_SGBRG8_1X8, V4L2_MBUS_FMT_SGBRG8_1X8,
-	  V4L2_PIX_FMT_SGBRG8, 8, },
+	  V4L2_PIX_FMT_SGBRG8, 8, 1, },
 	{ V4L2_MBUS_FMT_SGRBG8_1X8, V4L2_MBUS_FMT_SGRBG8_1X8,
 	  V4L2_MBUS_FMT_SGRBG8_1X8, V4L2_MBUS_FMT_SGRBG8_1X8,
-	  V4L2_PIX_FMT_SGRBG8, 8, },
+	  V4L2_PIX_FMT_SGRBG8, 8, 1, },
 	{ V4L2_MBUS_FMT_SRGGB8_1X8, V4L2_MBUS_FMT_SRGGB8_1X8,
 	  V4L2_MBUS_FMT_SRGGB8_1X8, V4L2_MBUS_FMT_SRGGB8_1X8,
-	  V4L2_PIX_FMT_SRGGB8, 8, },
+	  V4L2_PIX_FMT_SRGGB8, 8, 1, },
 	{ V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8, V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8,
 	  V4L2_MBUS_FMT_SBGGR10_1X10, 0,
-	  V4L2_PIX_FMT_SBGGR10DPCM8, 8, },
+	  V4L2_PIX_FMT_SBGGR10DPCM8, 8, 1, },
 	{ V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8, V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8,
 	  V4L2_MBUS_FMT_SGBRG10_1X10, 0,
-	  V4L2_PIX_FMT_SGBRG10DPCM8, 8, },
+	  V4L2_PIX_FMT_SGBRG10DPCM8, 8, 1, },
 	{ V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8, V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8,
 	  V4L2_MBUS_FMT_SGRBG10_1X10, 0,
-	  V4L2_PIX_FMT_SGRBG10DPCM8, 8, },
+	  V4L2_PIX_FMT_SGRBG10DPCM8, 8, 1, },
 	{ V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8, V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8,
 	  V4L2_MBUS_FMT_SRGGB10_1X10, 0,
-	  V4L2_PIX_FMT_SRGGB10DPCM8, 8, },
+	  V4L2_PIX_FMT_SRGGB10DPCM8, 8, 1, },
 	{ V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_MBUS_FMT_SBGGR10_1X10,
 	  V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_MBUS_FMT_SBGGR8_1X8,
-	  V4L2_PIX_FMT_SBGGR10, 10, },
+	  V4L2_PIX_FMT_SBGGR10, 10, 2, },
 	{ V4L2_MBUS_FMT_SGBRG10_1X10, V4L2_MBUS_FMT_SGBRG10_1X10,
 	  V4L2_MBUS_FMT_SGBRG10_1X10, V4L2_MBUS_FMT_SGBRG8_1X8,
-	  V4L2_PIX_FMT_SGBRG10, 10, },
+	  V4L2_PIX_FMT_SGBRG10, 10, 2, },
 	{ V4L2_MBUS_FMT_SGRBG10_1X10, V4L2_MBUS_FMT_SGRBG10_1X10,
 	  V4L2_MBUS_FMT_SGRBG10_1X10, V4L2_MBUS_FMT_SGRBG8_1X8,
-	  V4L2_PIX_FMT_SGRBG10, 10, },
+	  V4L2_PIX_FMT_SGRBG10, 10, 2, },
 	{ V4L2_MBUS_FMT_SRGGB10_1X10, V4L2_MBUS_FMT_SRGGB10_1X10,
 	  V4L2_MBUS_FMT_SRGGB10_1X10, V4L2_MBUS_FMT_SRGGB8_1X8,
-	  V4L2_PIX_FMT_SRGGB10, 10, },
+	  V4L2_PIX_FMT_SRGGB10, 10, 2, },
 	{ V4L2_MBUS_FMT_SBGGR12_1X12, V4L2_MBUS_FMT_SBGGR10_1X10,
 	  V4L2_MBUS_FMT_SBGGR12_1X12, V4L2_MBUS_FMT_SBGGR8_1X8,
-	  V4L2_PIX_FMT_SBGGR12, 12, },
+	  V4L2_PIX_FMT_SBGGR12, 12, 2, },
 	{ V4L2_MBUS_FMT_SGBRG12_1X12, V4L2_MBUS_FMT_SGBRG10_1X10,
 	  V4L2_MBUS_FMT_SGBRG12_1X12, V4L2_MBUS_FMT_SGBRG8_1X8,
-	  V4L2_PIX_FMT_SGBRG12, 12, },
+	  V4L2_PIX_FMT_SGBRG12, 12, 2, },
 	{ V4L2_MBUS_FMT_SGRBG12_1X12, V4L2_MBUS_FMT_SGRBG10_1X10,
 	  V4L2_MBUS_FMT_SGRBG12_1X12, V4L2_MBUS_FMT_SGRBG8_1X8,
-	  V4L2_PIX_FMT_SGRBG12, 12, },
+	  V4L2_PIX_FMT_SGRBG12, 12, 2, },
 	{ V4L2_MBUS_FMT_SRGGB12_1X12, V4L2_MBUS_FMT_SRGGB10_1X10,
 	  V4L2_MBUS_FMT_SRGGB12_1X12, V4L2_MBUS_FMT_SRGGB8_1X8,
-	  V4L2_PIX_FMT_SRGGB12, 12, },
+	  V4L2_PIX_FMT_SRGGB12, 12, 2, },
 	{ V4L2_MBUS_FMT_UYVY8_1X16, V4L2_MBUS_FMT_UYVY8_1X16,
 	  V4L2_MBUS_FMT_UYVY8_1X16, 0,
-	  V4L2_PIX_FMT_UYVY, 16, },
+	  V4L2_PIX_FMT_UYVY, 16, 2, },
 	{ V4L2_MBUS_FMT_YUYV8_1X16, V4L2_MBUS_FMT_YUYV8_1X16,
 	  V4L2_MBUS_FMT_YUYV8_1X16, 0,
-	  V4L2_PIX_FMT_YUYV, 16, },
+	  V4L2_PIX_FMT_YUYV, 16, 2, },
 };
 
 const struct isp_format_info *
@@ -161,7 +161,7 @@ static unsigned int isp_video_mbus_to_pix(const struct isp_video *video,
 	if (WARN_ON(i == ARRAY_SIZE(formats)))
 		return 0;
 
-	min_bpl = pix->width * ALIGN(formats[i].bpp, 8) / 8;
+	min_bpl = pix->width * formats[i].bpp;
 
 	/* Clamp the requested bytes per line value. If the maximum bytes per
 	 * line value is zero, the module doesn't support user configurable line
@@ -921,7 +921,8 @@ static int isp_video_check_external_subdevs(struct isp_video *video,
 		return ret;
 	}
 
-	pipe->external_bpp = omap3isp_video_format_info(fmt.format.code)->bpp;
+	pipe->external_width =
+		omap3isp_video_format_info(fmt.format.code)->width;
 
 	memset(&ctrls, 0, sizeof(ctrls));
 	memset(&ctrl, 0, sizeof(ctrl));

drivers/media/video/omap3isp/ispvideo.h

@@ -51,7 +51,8 @@ struct v4l2_pix_format;
  * @flavor: V4L2 media bus format code for the same pixel layout but
  *	shifted to be 8 bits per pixel. =0 if format is not shiftable.
  * @pixelformat: V4L2 pixel format FCC identifier
- * @bpp: Bits per pixel
+ * @width: Bits per pixel (when transferred over a bus)
+ * @bpp: Bytes per pixel (when stored in memory)
  */
 struct isp_format_info {
 	enum v4l2_mbus_pixelcode code;
@@ -59,6 +60,7 @@ struct isp_format_info {
 	enum v4l2_mbus_pixelcode uncompressed;
 	enum v4l2_mbus_pixelcode flavor;
 	u32 pixelformat;
+	unsigned int width;
 	unsigned int bpp;
 };
 
@@ -106,7 +108,7 @@ struct isp_pipeline {
 	struct v4l2_fract max_timeperframe;
 	struct v4l2_subdev *external;
 	unsigned int external_rate;
-	unsigned int external_bpp;
+	unsigned int external_width;
 };
 
 #define to_isp_pipeline(__e) \