[v4,19/27] media: ov5640: Implement get_selection

Commit Message

Jacopo Mondi Feb. 23, 2022, 2:55 p.m. UTC

Implement the get_selection pad operation for the OV5640 sensor driver.

The supported targets report the sensor's native size, the active pixel
array size and the analog crop rectangle from which the image is
produced.

Signed-off-by: Jacopo Mondi <[e-mail]>
Reviewed-by: Laurent Pinchart <[e-mail]>
---
 drivers/media/i2c/ov5640.c | 46 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

Patch

diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index c1fc2ab1e0cf..88662972abb0 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -2832,6 +2832,45 @@  static int ov5640_set_fmt(struct v4l2_subdev *sd,
 	return ret;
 }
 
+static int ov5640_get_selection(struct v4l2_subdev *sd,
+				struct v4l2_subdev_state *sd_state,
+				struct v4l2_subdev_selection *sel)
+{
+	struct ov5640_dev *sensor = to_ov5640_dev(sd);
+	const struct ov5640_mode_info *mode = sensor->current_mode;
+	const struct ov5640_timings *timings;
+
+	switch (sel->target) {
+	case V4L2_SEL_TGT_CROP: {
+		mutex_lock(&sensor->lock);
+		timings = ov5640_timings(sensor, mode);
+		sel->r = timings->analog_crop;
+		mutex_unlock(&sensor->lock);
+
+		return 0;
+	}
+
+	case V4L2_SEL_TGT_NATIVE_SIZE:
+	case V4L2_SEL_TGT_CROP_BOUNDS:
+		sel->r.top = 0;
+		sel->r.left = 0;
+		sel->r.width = OV5640_NATIVE_WIDTH;
+		sel->r.height = OV5640_NATIVE_HEIGHT;
+
+		return 0;
+
+	case V4L2_SEL_TGT_CROP_DEFAULT:
+		sel->r.top = OV5640_PIXEL_ARRAY_TOP;
+		sel->r.left = OV5640_PIXEL_ARRAY_LEFT;
+		sel->r.width = OV5640_PIXEL_ARRAY_WIDTH;
+		sel->r.height = OV5640_PIXEL_ARRAY_HEIGHT;
+
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
 static int ov5640_set_framefmt(struct ov5640_dev *sensor,
 			       struct v4l2_mbus_framefmt *format)
 {
@@ -3531,9 +3570,15 @@  static int ov5640_init_cfg(struct v4l2_subdev *sd,
 			   struct v4l2_subdev_state *state)
 {
 	struct v4l2_mbus_framefmt *fmt = v4l2_subdev_get_try_format(sd, state, 0);
+	struct v4l2_rect *crop = v4l2_subdev_get_try_crop(sd, state, 0);
 
 	*fmt = ov5640_default_fmt;
 
+	crop->left = OV5640_PIXEL_ARRAY_LEFT;
+	crop->top = OV5640_PIXEL_ARRAY_TOP;
+	crop->width = OV5640_PIXEL_ARRAY_WIDTH;
+	crop->height = OV5640_PIXEL_ARRAY_HEIGHT;
+
 	return 0;
 }
 
@@ -3555,6 +3600,7 @@  static const struct v4l2_subdev_pad_ops ov5640_pad_ops = {
 	.enum_mbus_code = ov5640_enum_mbus_code,
 	.get_fmt = ov5640_get_fmt,
 	.set_fmt = ov5640_set_fmt,
+	.get_selection = ov5640_get_selection,
 	.enum_frame_size = ov5640_enum_frame_size,
 	.enum_frame_interval = ov5640_enum_frame_interval,
 };