The ov5640 driver supports different sizes for different mbus_codes.
In particular:
- 8bpp modes: high resolution sizes (>= 1280x720)
- 16bpp modes: all sizes
- 24bpp modes: low resolutions sizes (< 1280x720)
Adjust the image sizes according to the above constraints.
Signed-off-by: Jacopo Mondi <jacopo@xxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
drivers/media/i2c/ov5640.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index 81bf547a923e..465b09176169 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -2563,6 +2563,7 @@ static int ov5640_try_fmt_internal(struct v4l2_subdev *sd,
enum ov5640_frame_rate fr,
const struct ov5640_mode_info **new_mode)
{
+ unsigned int bpp = ov5640_code_to_bpp(fmt->code);
struct ov5640_dev *sensor = to_ov5640_dev(sd);
const struct ov5640_mode_info *mode;
int i;
@@ -2570,6 +2571,17 @@ static int ov5640_try_fmt_internal(struct v4l2_subdev *sd,
mode = ov5640_find_mode(sensor, fr, fmt->width, fmt->height, true);
if (!mode)
return -EINVAL;
+
+ /*
+ * Adjust mode according to bpp:
+ * - 8bpp modes work for resolution >= 1280x720
+ * - 24bpp modes work resolution < 1280x720
+ */
+ if (bpp == 8 && mode->crop.width < 1280)
+ mode = &ov5640_mode_data[OV5640_MODE_720P_1280_720];
+ else if (bpp == 24 && mode->crop.width > 1024)
+ mode = &ov5640_mode_data[OV5640_MODE_XGA_1024_768];
+
fmt->width = mode->crop.width;
fmt->height = mode->crop.height;
--
2.35.0
