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drivers/video/gc0308: add YUYV output format support

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GC0308 sensor supports multiple output formats via register 0x24.
Add YUYV (YCbCr422) alongside existing RGB565 in fmtdescs and
configure the output format register dynamically in start_capture()
based on the requested pixel format.

Signed-off-by: wangjianyu3 <wangjianyu3@xiaomi.com>
This commit is contained in:
wangjianyu3
2026-03-21 14:00:00 +08:00
committed by Alan C. Assis
parent f92b3d8d79
commit 99afb5ee34
1 changed files with 29 additions and 1 deletions
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drivers/video/gc0308.c
+29 -1
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@@ -154,6 +154,7 @@ struct gc0308_dev_s
struct i2c_master_s *i2c;
uint16_t width;
uint16_t height;
uint32_t pixelformat;
struct v4l2_frmsizeenum frmsizes;
bool streaming;
};
@@ -455,6 +456,10 @@ static const struct imgsensor_ops_s g_gc0308_ops =
static const struct v4l2_fmtdesc g_gc0308_fmtdescs[] =
{
{
.pixelformat = V4L2_PIX_FMT_YUYV,
.description = "YUV 4:2:2 (YUYV)",
},
{
.pixelformat = V4L2_PIX_FMT_RGB565,
.description = "RGB565",
@@ -648,7 +653,7 @@ static int gc0308_init(struct imgsensor_s *sensor)
up_mdelay(80);
/* Set RGB565 output format: reg 0x24 bits[3:0] = 6 */
/* Set default RGB565 output format: reg 0x24 bits[3:0] = 6 */
ret = gc0308_putreg(priv->i2c, GC0308_REG_RESET, 0x00);
if (ret < 0)
@@ -657,6 +662,7 @@ static int gc0308_init(struct imgsensor_s *sensor)
}
ret = gc0308_modreg(priv->i2c, GC0308_REG_OUTPUT_FMT, 0x0f, 0x06);
priv->pixelformat = IMGSENSOR_PIX_FMT_RGB565;
if (ret < 0)
{
return ret;
@@ -752,6 +758,8 @@ static int gc0308_validate_frame_setting(struct imgsensor_s *sensor,
}
if (datafmts[IMGSENSOR_FMT_MAIN].pixelformat !=
IMGSENSOR_PIX_FMT_YUYV &&
datafmts[IMGSENSOR_FMT_MAIN].pixelformat !=
IMGSENSOR_PIX_FMT_RGB565)
{
return -EINVAL;
@@ -777,12 +785,32 @@ static int gc0308_start_capture(struct imgsensor_s *sensor,
imgsensor_interval_t *interval)
{
struct gc0308_dev_s *priv = (struct gc0308_dev_s *)sensor;
uint8_t fmtval;
int ret;
if (priv->streaming)
{
return -EBUSY;
}
/* Configure output format register based on requested pixel format */
if (datafmts[IMGSENSOR_FMT_MAIN].pixelformat == IMGSENSOR_PIX_FMT_RGB565)
{
fmtval = 0x06; /* RGB565 */
}
else
{
fmtval = 0x02; /* YCbCr422 */
}
ret = gc0308_modreg(priv->i2c, GC0308_REG_OUTPUT_FMT, 0x0f, fmtval);
if (ret < 0)
{
return ret;
}
priv->pixelformat = datafmts[IMGSENSOR_FMT_MAIN].pixelformat;
priv->streaming = true;
return OK;
}