media: i2c: ov5645: Use subdev active state

Port the ov5645 sensor driver to use the subdev active state.

Move all the format configuration to the subdevice state and simplify
the format handling, locking and initialization.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>

1 files changed, 38 insertions, 70 deletions

diff --git a/drivers/media/i2c/ov5645.c b/drivers/media/i2c/ov5645.c
index b89b69767209..1210156e7d98 100644
--- a/drivers/media/i2c/ov5645.c
+++ b/drivers/media/i2c/ov5645.c
@@ -88,7 +88,6 @@ struct ov5645 {
 	struct v4l2_subdev sd;
 	struct media_pad pad;
 	struct v4l2_fwnode_endpoint ep;
-	struct v4l2_mbus_framefmt fmt;
 	struct v4l2_rect crop;
 	struct clk *xclk;
 
@@ -849,49 +848,6 @@ static int ov5645_enum_frame_size(struct v4l2_subdev *subdev,
 	return 0;
 }
 
-static struct v4l2_mbus_framefmt *
-__ov5645_get_pad_format(struct ov5645 *ov5645,
-			struct v4l2_subdev_state *sd_state,
-			unsigned int pad,
-			enum v4l2_subdev_format_whence which)
-{
-	switch (which) {
-	case V4L2_SUBDEV_FORMAT_TRY:
-		return v4l2_subdev_state_get_format(sd_state, pad);
-	case V4L2_SUBDEV_FORMAT_ACTIVE:
-		return &ov5645->fmt;
-	default:
-		return NULL;
-	}
-}
-
-static int ov5645_get_format(struct v4l2_subdev *sd,
-			     struct v4l2_subdev_state *sd_state,
-			     struct v4l2_subdev_format *format)
-{
-	struct ov5645 *ov5645 = to_ov5645(sd);
-
-	format->format = *__ov5645_get_pad_format(ov5645, sd_state,
-						  format->pad,
-						  format->which);
-	return 0;
-}
-
-static struct v4l2_rect *
-__ov5645_get_pad_crop(struct ov5645 *ov5645,
-		      struct v4l2_subdev_state *sd_state,
-		      unsigned int pad, enum v4l2_subdev_format_whence which)
-{
-	switch (which) {
-	case V4L2_SUBDEV_FORMAT_TRY:
-		return v4l2_subdev_state_get_crop(sd_state, pad);
-	case V4L2_SUBDEV_FORMAT_ACTIVE:
-		return &ov5645->crop;
-	default:
-		return NULL;
-	}
-}
-
 static int ov5645_set_format(struct v4l2_subdev *sd,
 			     struct v4l2_subdev_state *sd_state,
 			     struct v4l2_subdev_format *format)
@@ -902,33 +858,30 @@ static int ov5645_set_format(struct v4l2_subdev *sd,
 	const struct ov5645_mode_info *new_mode;
 	int ret;
 
-	__crop = __ov5645_get_pad_crop(ov5645, sd_state, format->pad,
-				       format->which);
-
+	__crop = v4l2_subdev_state_get_crop(sd_state, 0);
 	new_mode = v4l2_find_nearest_size(ov5645_mode_info_data,
-			       ARRAY_SIZE(ov5645_mode_info_data),
-			       width, height,
-			       format->format.width, format->format.height);
+					  ARRAY_SIZE(ov5645_mode_info_data),
+					  width, height, format->format.width,
+					  format->format.height);
 
 	__crop->width = new_mode->width;
 	__crop->height = new_mode->height;
 
 	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
-		ret = v4l2_ctrl_s_ctrl_int64(ov5645->pixel_clock,
-					     new_mode->pixel_clock);
+		ret = __v4l2_ctrl_s_ctrl_int64(ov5645->pixel_clock,
+					       new_mode->pixel_clock);
 		if (ret < 0)
 			return ret;
 
-		ret = v4l2_ctrl_s_ctrl(ov5645->link_freq,
-				       new_mode->link_freq);
+		ret = __v4l2_ctrl_s_ctrl(ov5645->link_freq,
+					 new_mode->link_freq);
 		if (ret < 0)
 			return ret;
 
 		ov5645->current_mode = new_mode;
 	}
 
-	__format = __ov5645_get_pad_format(ov5645, sd_state, format->pad,
-					   format->which);
+	__format = v4l2_subdev_state_get_format(sd_state, 0);
 	__format->width = __crop->width;
 	__format->height = __crop->height;
 	__format->code = MEDIA_BUS_FMT_UYVY8_1X16;
@@ -943,11 +896,15 @@ static int ov5645_set_format(struct v4l2_subdev *sd,
 static int ov5645_init_state(struct v4l2_subdev *subdev,
 			     struct v4l2_subdev_state *sd_state)
 {
-	struct v4l2_subdev_format fmt = { 0 };
-
-	fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
-	fmt.format.width = 1920;
-	fmt.format.height = 1080;
+	struct v4l2_subdev_format fmt = {
+		.which = V4L2_SUBDEV_FORMAT_TRY,
+		.pad = 0,
+		.format = {
+			.code = MEDIA_BUS_FMT_UYVY8_1X16,
+			.width = ov5645_mode_info_data[1].width,
+			.height = ov5645_mode_info_data[1].height,
+		},
+	};
 
 	ov5645_set_format(subdev, sd_state, &fmt);
 
@@ -958,25 +915,27 @@ static int ov5645_get_selection(struct v4l2_subdev *sd,
 			   struct v4l2_subdev_state *sd_state,
 			   struct v4l2_subdev_selection *sel)
 {
-	struct ov5645 *ov5645 = to_ov5645(sd);
-
 	if (sel->target != V4L2_SEL_TGT_CROP)
 		return -EINVAL;
 
-	sel->r = *__ov5645_get_pad_crop(ov5645, sd_state, sel->pad,
-					sel->which);
+	sel->r = *v4l2_subdev_state_get_crop(sd_state, 0);
 	return 0;
 }
 
 static int ov5645_s_stream(struct v4l2_subdev *subdev, int enable)
 {
 	struct ov5645 *ov5645 = to_ov5645(subdev);
+	struct v4l2_subdev_state *state;
 	int ret;
 
+	state = v4l2_subdev_lock_and_get_active_state(&ov5645->sd);
+
 	if (enable) {
 		ret = pm_runtime_resume_and_get(ov5645->dev);
-		if (ret < 0)
+		if (ret < 0) {
+			v4l2_subdev_unlock_state(state);
 			return ret;
+		}
 
 		ret = ov5645_set_register_array(ov5645,
 					ov5645->current_mode->data,
@@ -987,7 +946,7 @@ static int ov5645_s_stream(struct v4l2_subdev *subdev, int enable)
 				ov5645->current_mode->height);
 			goto err_rpm_put;
 		}
-		ret = v4l2_ctrl_handler_setup(&ov5645->ctrls);
+		ret = __v4l2_ctrl_handler_setup(&ov5645->ctrls);
 		if (ret < 0) {
 			dev_err(ov5645->dev, "could not sync v4l2 controls\n");
 			goto err_rpm_put;
@@ -1012,6 +971,7 @@ static int ov5645_s_stream(struct v4l2_subdev *subdev, int enable)
 		goto stream_off_rpm_put;
 	}
 
+	v4l2_subdev_unlock_state(state);
 	return 0;
 
 err_rpm_put:
@@ -1021,6 +981,7 @@ err_rpm_put:
 stream_off_rpm_put:
 	pm_runtime_mark_last_busy(ov5645->dev);
 	pm_runtime_put_autosuspend(ov5645->dev);
+	v4l2_subdev_unlock_state(state);
 	return ret;
 }
 
@@ -1031,7 +992,7 @@ static const struct v4l2_subdev_video_ops ov5645_video_ops = {
 static const struct v4l2_subdev_pad_ops ov5645_subdev_pad_ops = {
 	.enum_mbus_code = ov5645_enum_mbus_code,
 	.enum_frame_size = ov5645_enum_frame_size,
-	.get_fmt = ov5645_get_format,
+	.get_fmt = v4l2_subdev_get_fmt,
 	.set_fmt = ov5645_set_format,
 	.get_selection = ov5645_get_selection,
 };
@@ -1214,12 +1175,17 @@ static int ov5645_probe(struct i2c_client *client)
 		goto power_down;
 	}
 
+	ov5645->sd.state_lock = ov5645->ctrls.lock;
+	ret = v4l2_subdev_init_finalize(&ov5645->sd);
+	if (ret < 0) {
+		dev_err_probe(dev, ret, "subdev init error\n");
+		goto power_down;
+	}
+
 	pm_runtime_set_active(dev);
 	pm_runtime_get_noresume(dev);
 	pm_runtime_enable(dev);
 
-	ov5645_init_state(&ov5645->sd, NULL);
-
 	ret = v4l2_async_register_subdev_sensor(&ov5645->sd);
 	if (ret < 0) {
 		dev_err_probe(dev, ret, "could not register v4l2 device\n");
@@ -1236,6 +1202,7 @@ static int ov5645_probe(struct i2c_client *client)
 err_pm_runtime:
 	pm_runtime_disable(dev);
 	pm_runtime_put_noidle(dev);
+	v4l2_subdev_cleanup(&ov5645->sd);
 power_down:
 	ov5645_set_power_off(dev);
 free_entity:
@@ -1252,6 +1219,7 @@ static void ov5645_remove(struct i2c_client *client)
 	struct ov5645 *ov5645 = to_ov5645(sd);
 
 	v4l2_async_unregister_subdev(&ov5645->sd);
+	v4l2_subdev_cleanup(sd);
 	media_entity_cleanup(&ov5645->sd.entity);
 	v4l2_ctrl_handler_free(&ov5645->ctrls);
 	pm_runtime_disable(ov5645->dev);