Hi Jacopo,
Thank you for the patch.
On Sun, Apr 26, 2020 at 10:52:50PM +0200, Jacopo Mondi wrote:
> Implement the get_selection pad operation for the IMX219 sensor driver.
> The supported targets report the sensor's native size, the crop default
> rectangle and the crop rectangle.
>
> Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> Signed-off-by: Jacopo Mondi <jacopo@xxxxxxxxxx>
>
> ---
> v1->v2:
> - Add crop rectangle for 640x480 mode that was missing in v1
> - Rework get selection function as suggested by Laurent
> - Add Laurent's tag
> ---
> drivers/media/i2c/imx219.c | 97 ++++++++++++++++++++++++++++++++++++++
> 1 file changed, 97 insertions(+)
>
> diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c
> index cb03bdec1f9c..2744669fb419 100644
> --- a/drivers/media/i2c/imx219.c
> +++ b/drivers/media/i2c/imx219.c
> @@ -112,6 +112,14 @@
> #define IMX219_TESTP_BLUE_DEFAULT 0
> #define IMX219_TESTP_GREENB_DEFAULT 0
>
> +/* IMX219 native and active pixel array size. */
> +#define IMX219_NATIVE_WIDTH 3296U
> +#define IMX219_NATIVE_HEIGHT 2480U
> +#define IMX219_PIXEL_ARRAY_LEFT 8U
> +#define IMX219_PIXEL_ARRAY_TOP 8U
> +#define IMX219_PIXEL_ARRAY_WIDTH 3280U
> +#define IMX219_PIXEL_ARRAY_HEIGHT 2464U
> +
> struct imx219_reg {
> u16 address;
> u8 val;
> @@ -129,6 +137,9 @@ struct imx219_mode {
> /* Frame height */
> unsigned int height;
>
> + /* Analog crop rectangle. */
> + struct v4l2_rect crop;
> +
> /* V-timing */
> unsigned int vts_def;
>
> @@ -463,6 +474,12 @@ static const struct imx219_mode supported_modes[] = {
> /* 8MPix 15fps mode */
> .width = 3280,
> .height = 2464,
> + .crop = {
> + .top = 0,
> + .left = 0,
> + .width = 3280,
> + .height = 2464
> + },
> .vts_def = IMX219_VTS_15FPS,
> .reg_list = {
> .num_of_regs = ARRAY_SIZE(mode_3280x2464_regs),
> @@ -473,6 +490,12 @@ static const struct imx219_mode supported_modes[] = {
> /* 1080P 30fps cropped */
> .width = 1920,
> .height = 1080,
> + .crop = {
> + .top = 692,
> + .left = 680,
> + .width = 1920,
> + .height = 1080
> + },
> .vts_def = IMX219_VTS_30FPS_1080P,
> .reg_list = {
> .num_of_regs = ARRAY_SIZE(mode_1920_1080_regs),
> @@ -483,6 +506,12 @@ static const struct imx219_mode supported_modes[] = {
> /* 2x2 binned 30fps mode */
> .width = 1640,
> .height = 1232,
> + .crop = {
> + .top = 0,
> + .left = 0,
> + .width = 3280,
> + .height = 2464
> + },
> .vts_def = IMX219_VTS_30FPS_BINNED,
> .reg_list = {
> .num_of_regs = ARRAY_SIZE(mode_1640_1232_regs),
> @@ -654,6 +683,7 @@ static int imx219_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
> struct imx219 *imx219 = to_imx219(sd);
> struct v4l2_mbus_framefmt *try_fmt =
> v4l2_subdev_get_try_format(sd, fh->pad, 0);
> + struct v4l2_rect *try_crop;
>
> mutex_lock(&imx219->mutex);
>
> @@ -664,6 +694,13 @@ static int imx219_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
> MEDIA_BUS_FMT_SRGGB10_1X10);
> try_fmt->field = V4L2_FIELD_NONE;
>
> + /* Initialize try_crop rectangle. */
> + try_crop = v4l2_subdev_get_try_crop(sd, fh->pad, 0);
> + try_crop->top = IMX219_PIXEL_ARRAY_TOP;
> + try_crop->left = IMX219_PIXEL_ARRAY_LEFT;
> + try_crop->width = IMX219_PIXEL_ARRAY_WIDTH;
> + try_crop->height = IMX219_PIXEL_ARRAY_HEIGHT;
> +
> mutex_unlock(&imx219->mutex);
>
> return 0;
> @@ -928,6 +965,65 @@ static int imx219_set_framefmt(struct imx219 *imx219)
> return -EINVAL;
> }
>
> +static const struct v4l2_rect *
> +__imx219_get_pad_crop(struct imx219 *imx219, struct v4l2_subdev_pad_config *cfg,
> + unsigned int pad, enum v4l2_subdev_format_whence which)
> +{
> + switch (which) {
> + case V4L2_SUBDEV_FORMAT_TRY:
> + return v4l2_subdev_get_try_crop(&imx219->sd, cfg, pad);
> + case V4L2_SUBDEV_FORMAT_ACTIVE:
> + return &imx219->mode->crop;
> + default:
> + return NULL;
> + }
> +}
> +
> +static int imx219_get_selection(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_selection *sel)
> +{
> + struct imx219 *imx219 = to_imx219(sd);
> + const struct v4l2_rect *__crop;
> +
> + if (sel->pad != 0)
> + return -EINVAL;
> +
> + mutex_lock(&imx219->mutex);
> +
> + switch (sel->target) {
> + case V4L2_SEL_TGT_NATIVE_SIZE:
> + sel->r.top = 0;
> + sel->r.left = 0;
> + sel->r.width = IMX219_NATIVE_WIDTH;
> + sel->r.height = IMX219_NATIVE_HEIGHT;
> + mutex_unlock(&imx219->mutex);
> +
> + return 0;
> +
> + case V4L2_SEL_TGT_CROP_DEFAULT:
> + sel->r.top = IMX219_PIXEL_ARRAY_TOP;
> + sel->r.left = IMX219_PIXEL_ARRAY_LEFT;
> + sel->r.width = IMX219_PIXEL_ARRAY_WIDTH;
> + sel->r.height = IMX219_PIXEL_ARRAY_HEIGHT;
> + mutex_unlock(&imx219->mutex);
> +
> + return 0;
> +
> + case V4L2_SEL_TGT_CROP:
> + __crop = __imx219_get_pad_crop(imx219, cfg, sel->pad,
> + sel->which);
> + sel->r = *__crop;
> + mutex_unlock(&imx219->mutex);
I should have thought about it before, but only this case requires
locking. Maybe
__crop = __imx219_get_pad_crop(imx219, cfg, sel->pad,
sel->which);
mutex_lock(&imx219->mutex);
sel->r = *__crop;
mutex_unlock(&imx219->mutex);
and removing the mutex_lock() at the beginning ?
> +
> + return 0;
> + }
> +
> + mutex_unlock(&imx219->mutex);
> +
> + return -EINVAL;
> +}
> +
> static int imx219_start_streaming(struct imx219 *imx219)
> {
> struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
> @@ -1152,6 +1248,7 @@ static const struct v4l2_subdev_pad_ops imx219_pad_ops = {
> .enum_mbus_code = imx219_enum_mbus_code,
> .get_fmt = imx219_get_pad_format,
> .set_fmt = imx219_set_pad_format,
> + .get_selection = imx219_get_selection,
> .enum_frame_size = imx219_enum_frame_size,
> };
>
> --
> 2.26.1
>
--
Regards,
Laurent Pinchart
