V4L/DVB (5469): Add raw bayer support to the ov7670 driver
Add raw bayer support to the ov7670 driver
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/ov7670.c b/drivers/media/video/ov7670.c
index 639fc23..03bc369 100644
--- a/drivers/media/video/ov7670.c
+++ b/drivers/media/video/ov7670.c
@@ -165,6 +165,10 @@
#define REG_GFIX 0x69 /* Fix gain control */
+#define REG_REG76 0x76 /* OV's name */
+#define R76_BLKPCOR 0x80 /* Black pixel correction enable */
+#define R76_WHTPCOR 0x40 /* White pixel correction enable */
+
#define REG_RGB444 0x8c /* RGB 444 control */
#define R444_ENABLE 0x02 /* Turn on RGB444, overrides 5x5 */
#define R444_RGBX 0x01 /* Empty nibble at end */
@@ -383,6 +387,13 @@
{ 0xff, 0xff },
};
+static struct regval_list ov7670_fmt_raw[] = {
+ { REG_COM7, COM7_BAYER },
+ { REG_COM13, 0x08 }, /* No gamma, magic rsvd bit */
+ { REG_COM16, 0x3d }, /* Edge enhancement, denoise */
+ { REG_REG76, 0xe1 }, /* Pix correction, magic rsvd */
+ { 0xff, 0xff },
+};
@@ -486,32 +497,39 @@
__u32 pixelformat;
struct regval_list *regs;
int cmatrix[CMATRIX_LEN];
+ int bpp; /* Bytes per pixel */
} ov7670_formats[] = {
{
.desc = "YUYV 4:2:2",
.pixelformat = V4L2_PIX_FMT_YUYV,
.regs = ov7670_fmt_yuv422,
.cmatrix = { 128, -128, 0, -34, -94, 128 },
+ .bpp = 2,
},
{
.desc = "RGB 444",
.pixelformat = V4L2_PIX_FMT_RGB444,
.regs = ov7670_fmt_rgb444,
.cmatrix = { 179, -179, 0, -61, -176, 228 },
+ .bpp = 2,
},
{
.desc = "RGB 565",
.pixelformat = V4L2_PIX_FMT_RGB565,
.regs = ov7670_fmt_rgb565,
.cmatrix = { 179, -179, 0, -61, -176, 228 },
+ .bpp = 2,
+ },
+ {
+ .desc = "Raw RGB Bayer",
+ .pixelformat = V4L2_PIX_FMT_SBGGR8,
+ .regs = ov7670_fmt_raw,
+ .cmatrix = { 0, 0, 0, 0, 0, 0 },
+ .bpp = 1
},
};
-#define N_OV7670_FMTS (sizeof(ov7670_formats)/sizeof(ov7670_formats[0]))
+#define N_OV7670_FMTS ARRAY_SIZE(ov7670_formats)
-/*
- * All formats we support are 2 bytes/pixel.
- */
-#define BYTES_PER_PIXEL 2
/*
* Then there is the issue of window sizes. Try to capture the info here.
@@ -688,7 +706,7 @@
*/
pix->width = wsize->width;
pix->height = wsize->height;
- pix->bytesperline = pix->width*BYTES_PER_PIXEL;
+ pix->bytesperline = pix->width*ov7670_formats[index].bpp;
pix->sizeimage = pix->height*pix->bytesperline;
return 0;
}