Re: [PATCH v1 2/3] media: rkisp1: isp: Use V4L2 subdev active state

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On Fri, Jan 27, 2023 at 02:31:23AM +0200, Laurent Pinchart wrote:
> Use the V4L2 subdev active state API to store the active format and crop
> rectangle. This simplifies the driver not only by dropping the state
> stored in the rkisp1_isp structure, but also by replacing the ops_lock
> with the state lock.
> 
> The rkisp1_isp.sink_fmt field needs to be kept, as it is accessed from
> the stats interrupt handler. To simplifye the rkisp1_isp_set_sink_fmt()

s/simplifye/simplify/

Reviewed-by: Paul Elder <paul.elder@xxxxxxxxxxxxxxxx>

> implementation, the field is now set when starting the ISP, instead of
> when setting the format.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> ---
>  .../platform/rockchip/rkisp1/rkisp1-common.h  |   6 -
>  .../platform/rockchip/rkisp1/rkisp1-isp.c     | 261 +++++++-----------
>  2 files changed, 102 insertions(+), 165 deletions(-)
> 
> diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
> index e9626e59e1c8..d43ff1b549d9 100644
> --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
> +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
> @@ -190,20 +190,14 @@ struct rkisp1_csi {
>   * @sd:				v4l2_subdev variable
>   * @rkisp1:			pointer to rkisp1_device
>   * @pads:			media pads
> - * @pad_cfg:			pads configurations
>   * @sink_fmt:			input format
> - * @src_fmt:			output format
> - * @ops_lock:			ops serialization
>   * @frame_sequence:		used to synchronize frame_id between video devices.
>   */
>  struct rkisp1_isp {
>  	struct v4l2_subdev sd;
>  	struct rkisp1_device *rkisp1;
>  	struct media_pad pads[RKISP1_ISP_PAD_MAX];
> -	struct v4l2_subdev_pad_config pad_cfg[RKISP1_ISP_PAD_MAX];
>  	const struct rkisp1_mbus_info *sink_fmt;
> -	const struct rkisp1_mbus_info *src_fmt;
> -	struct mutex ops_lock; /* serialize the subdevice ops */
>  	__u32 frame_sequence;
>  };
>  
> diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
> index 585cf3f53469..4d4f7b59f848 100644
> --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
> +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
> @@ -53,40 +53,6 @@
>   * +---------------------------------------------------------+
>   */
>  
> -/* ----------------------------------------------------------------------------
> - * Helpers
> - */
> -
> -static struct v4l2_mbus_framefmt *
> -rkisp1_isp_get_pad_fmt(struct rkisp1_isp *isp,
> -		       struct v4l2_subdev_state *sd_state,
> -		       unsigned int pad, u32 which)
> -{
> -	struct v4l2_subdev_state state = {
> -		.pads = isp->pad_cfg
> -	};
> -
> -	if (which == V4L2_SUBDEV_FORMAT_TRY)
> -		return v4l2_subdev_get_try_format(&isp->sd, sd_state, pad);
> -	else
> -		return v4l2_subdev_get_try_format(&isp->sd, &state, pad);
> -}
> -
> -static struct v4l2_rect *
> -rkisp1_isp_get_pad_crop(struct rkisp1_isp *isp,
> -			struct v4l2_subdev_state *sd_state,
> -			unsigned int pad, u32 which)
> -{
> -	struct v4l2_subdev_state state = {
> -		.pads = isp->pad_cfg
> -	};
> -
> -	if (which == V4L2_SUBDEV_FORMAT_TRY)
> -		return v4l2_subdev_get_try_crop(&isp->sd, sd_state, pad);
> -	else
> -		return v4l2_subdev_get_try_crop(&isp->sd, &state, pad);
> -}
> -
>  /* ----------------------------------------------------------------------------
>   * Camera Interface registers configurations
>   */
> @@ -96,12 +62,12 @@ rkisp1_isp_get_pad_crop(struct rkisp1_isp *isp,
>   * This should only be called when configuring CIF
>   * or at the frame end interrupt
>   */
> -static void rkisp1_config_ism(struct rkisp1_isp *isp)
> +static void rkisp1_config_ism(struct rkisp1_isp *isp,
> +			      struct v4l2_subdev_state *sd_state)
>  {
>  	const struct v4l2_rect *src_crop =
> -		rkisp1_isp_get_pad_crop(isp, NULL,
> -					RKISP1_ISP_PAD_SOURCE_VIDEO,
> -					V4L2_SUBDEV_FORMAT_ACTIVE);
> +		v4l2_subdev_get_pad_crop(&isp->sd, sd_state,
> +					 RKISP1_ISP_PAD_SOURCE_VIDEO);
>  	struct rkisp1_device *rkisp1 = isp->rkisp1;
>  	u32 val;
>  
> @@ -125,21 +91,26 @@ static void rkisp1_config_ism(struct rkisp1_isp *isp)
>   * configure ISP blocks with input format, size......
>   */
>  static int rkisp1_config_isp(struct rkisp1_isp *isp,
> +			     struct v4l2_subdev_state *sd_state,
>  			     enum v4l2_mbus_type mbus_type, u32 mbus_flags)
>  {
>  	struct rkisp1_device *rkisp1 = isp->rkisp1;
>  	u32 isp_ctrl = 0, irq_mask = 0, acq_mult = 0, acq_prop = 0;
> -	const struct rkisp1_mbus_info *sink_fmt = isp->sink_fmt;
> -	const struct rkisp1_mbus_info *src_fmt = isp->src_fmt;
> +	const struct rkisp1_mbus_info *sink_fmt;
> +	const struct rkisp1_mbus_info *src_fmt;
> +	const struct v4l2_mbus_framefmt *src_frm;
>  	const struct v4l2_mbus_framefmt *sink_frm;
>  	const struct v4l2_rect *sink_crop;
>  
> -	sink_frm = rkisp1_isp_get_pad_fmt(isp, NULL,
> -					  RKISP1_ISP_PAD_SINK_VIDEO,
> -					  V4L2_SUBDEV_FORMAT_ACTIVE);
> -	sink_crop = rkisp1_isp_get_pad_crop(isp, NULL,
> -					    RKISP1_ISP_PAD_SINK_VIDEO,
> -					    V4L2_SUBDEV_FORMAT_ACTIVE);
> +	sink_frm = v4l2_subdev_get_pad_format(&isp->sd, sd_state,
> +					      RKISP1_ISP_PAD_SINK_VIDEO);
> +	sink_crop = v4l2_subdev_get_pad_crop(&isp->sd, sd_state,
> +					     RKISP1_ISP_PAD_SINK_VIDEO);
> +	src_frm = v4l2_subdev_get_pad_format(&isp->sd, sd_state,
> +					     RKISP1_ISP_PAD_SOURCE_VIDEO);
> +
> +	sink_fmt = rkisp1_mbus_info_get_by_code(sink_frm->code);
> +	src_fmt = rkisp1_mbus_info_get_by_code(src_frm->code);
>  
>  	if (sink_fmt->pixel_enc == V4L2_PIXEL_ENC_BAYER) {
>  		acq_mult = 1;
> @@ -230,14 +201,15 @@ static int rkisp1_config_isp(struct rkisp1_isp *isp,
>  	} else {
>  		struct v4l2_mbus_framefmt *src_frm;
>  
> -		src_frm = rkisp1_isp_get_pad_fmt(isp, NULL,
> -						 RKISP1_ISP_PAD_SOURCE_VIDEO,
> -						 V4L2_SUBDEV_FORMAT_ACTIVE);
> +		src_frm = v4l2_subdev_get_pad_format(&isp->sd, sd_state,
> +						     RKISP1_ISP_PAD_SOURCE_VIDEO);
>  		rkisp1_params_pre_configure(&rkisp1->params, sink_fmt->bayer_pat,
>  					    src_frm->quantization,
>  					    src_frm->ycbcr_enc);
>  	}
>  
> +	isp->sink_fmt = sink_fmt;
> +
>  	return 0;
>  }
>  
> @@ -258,16 +230,17 @@ static void rkisp1_config_path(struct rkisp1_isp *isp,
>  
>  /* Hardware configure Entry */
>  static int rkisp1_config_cif(struct rkisp1_isp *isp,
> +			     struct v4l2_subdev_state *sd_state,
>  			     enum v4l2_mbus_type mbus_type, u32 mbus_flags)
>  {
>  	int ret;
>  
> -	ret = rkisp1_config_isp(isp, mbus_type, mbus_flags);
> +	ret = rkisp1_config_isp(isp, sd_state, mbus_type, mbus_flags);
>  	if (ret)
>  		return ret;
>  
>  	rkisp1_config_path(isp, mbus_type);
> -	rkisp1_config_ism(isp);
> +	rkisp1_config_ism(isp, sd_state);
>  
>  	return 0;
>  }
> @@ -328,9 +301,12 @@ static void rkisp1_config_clk(struct rkisp1_isp *isp)
>  	}
>  }
>  
> -static void rkisp1_isp_start(struct rkisp1_isp *isp)
> +static void rkisp1_isp_start(struct rkisp1_isp *isp,
> +			     struct v4l2_subdev_state *sd_state)
>  {
>  	struct rkisp1_device *rkisp1 = isp->rkisp1;
> +	const struct v4l2_mbus_framefmt *src_fmt;
> +	const struct rkisp1_mbus_info *src_info;
>  	u32 val;
>  
>  	rkisp1_config_clk(isp);
> @@ -342,7 +318,11 @@ static void rkisp1_isp_start(struct rkisp1_isp *isp)
>  	       RKISP1_CIF_ISP_CTRL_ISP_INFORM_ENABLE;
>  	rkisp1_write(rkisp1, RKISP1_CIF_ISP_CTRL, val);
>  
> -	if (isp->src_fmt->pixel_enc != V4L2_PIXEL_ENC_BAYER)
> +	src_fmt = v4l2_subdev_get_pad_format(&isp->sd, sd_state,
> +					     RKISP1_ISP_PAD_SOURCE_VIDEO);
> +	src_info = rkisp1_mbus_info_get_by_code(src_fmt->code);
> +
> +	if (src_info->pixel_enc != V4L2_PIXEL_ENC_BAYER)
>  		rkisp1_params_post_configure(&rkisp1->params);
>  }
>  
> @@ -436,7 +416,7 @@ static int rkisp1_isp_init_config(struct v4l2_subdev *sd,
>  	struct v4l2_rect *sink_crop, *src_crop;
>  
>  	/* Video. */
> -	sink_fmt = v4l2_subdev_get_try_format(sd, sd_state,
> +	sink_fmt = v4l2_subdev_get_pad_format(sd, sd_state,
>  					      RKISP1_ISP_PAD_SINK_VIDEO);
>  	sink_fmt->width = RKISP1_DEFAULT_WIDTH;
>  	sink_fmt->height = RKISP1_DEFAULT_HEIGHT;
> @@ -447,14 +427,14 @@ static int rkisp1_isp_init_config(struct v4l2_subdev *sd,
>  	sink_fmt->ycbcr_enc = V4L2_YCBCR_ENC_601;
>  	sink_fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE;
>  
> -	sink_crop = v4l2_subdev_get_try_crop(sd, sd_state,
> +	sink_crop = v4l2_subdev_get_pad_crop(sd, sd_state,
>  					     RKISP1_ISP_PAD_SINK_VIDEO);
>  	sink_crop->width = RKISP1_DEFAULT_WIDTH;
>  	sink_crop->height = RKISP1_DEFAULT_HEIGHT;
>  	sink_crop->left = 0;
>  	sink_crop->top = 0;
>  
> -	src_fmt = v4l2_subdev_get_try_format(sd, sd_state,
> +	src_fmt = v4l2_subdev_get_pad_format(sd, sd_state,
>  					     RKISP1_ISP_PAD_SOURCE_VIDEO);
>  	*src_fmt = *sink_fmt;
>  	src_fmt->code = RKISP1_DEF_SRC_PAD_FMT;
> @@ -463,14 +443,14 @@ static int rkisp1_isp_init_config(struct v4l2_subdev *sd,
>  	src_fmt->ycbcr_enc = V4L2_YCBCR_ENC_601;
>  	src_fmt->quantization = V4L2_QUANTIZATION_LIM_RANGE;
>  
> -	src_crop = v4l2_subdev_get_try_crop(sd, sd_state,
> +	src_crop = v4l2_subdev_get_pad_crop(sd, sd_state,
>  					    RKISP1_ISP_PAD_SOURCE_VIDEO);
>  	*src_crop = *sink_crop;
>  
>  	/* Parameters and statistics. */
> -	sink_fmt = v4l2_subdev_get_try_format(sd, sd_state,
> +	sink_fmt = v4l2_subdev_get_pad_format(sd, sd_state,
>  					      RKISP1_ISP_PAD_SINK_PARAMS);
> -	src_fmt = v4l2_subdev_get_try_format(sd, sd_state,
> +	src_fmt = v4l2_subdev_get_pad_format(sd, sd_state,
>  					     RKISP1_ISP_PAD_SOURCE_STATS);
>  	sink_fmt->width = 0;
>  	sink_fmt->height = 0;
> @@ -483,8 +463,7 @@ static int rkisp1_isp_init_config(struct v4l2_subdev *sd,
>  
>  static void rkisp1_isp_set_src_fmt(struct rkisp1_isp *isp,
>  				   struct v4l2_subdev_state *sd_state,
> -				   struct v4l2_mbus_framefmt *format,
> -				   unsigned int which)
> +				   struct v4l2_mbus_framefmt *format)
>  {
>  	const struct rkisp1_mbus_info *sink_info;
>  	const struct rkisp1_mbus_info *src_info;
> @@ -493,12 +472,12 @@ static void rkisp1_isp_set_src_fmt(struct rkisp1_isp *isp,
>  	const struct v4l2_rect *src_crop;
>  	bool set_csc;
>  
> -	sink_fmt = rkisp1_isp_get_pad_fmt(isp, sd_state,
> -					  RKISP1_ISP_PAD_SINK_VIDEO, which);
> -	src_fmt = rkisp1_isp_get_pad_fmt(isp, sd_state,
> -					 RKISP1_ISP_PAD_SOURCE_VIDEO, which);
> -	src_crop = rkisp1_isp_get_pad_crop(isp, sd_state,
> -					   RKISP1_ISP_PAD_SOURCE_VIDEO, which);
> +	sink_fmt = v4l2_subdev_get_pad_format(&isp->sd, sd_state,
> +					      RKISP1_ISP_PAD_SINK_VIDEO);
> +	src_fmt = v4l2_subdev_get_pad_format(&isp->sd, sd_state,
> +					     RKISP1_ISP_PAD_SOURCE_VIDEO);
> +	src_crop = v4l2_subdev_get_pad_crop(&isp->sd, sd_state,
> +					    RKISP1_ISP_PAD_SOURCE_VIDEO);
>  
>  	/*
>  	 * Media bus code. The ISP can operate in pass-through mode (Bayer in,
> @@ -581,26 +560,20 @@ static void rkisp1_isp_set_src_fmt(struct rkisp1_isp *isp,
>  	 */
>  	if (set_csc)
>  		format->flags |= V4L2_MBUS_FRAMEFMT_SET_CSC;
> -
> -	/* Store the source format info when setting the active format. */
> -	if (which == V4L2_SUBDEV_FORMAT_ACTIVE)
> -		isp->src_fmt = src_info;
>  }
>  
>  static void rkisp1_isp_set_src_crop(struct rkisp1_isp *isp,
>  				    struct v4l2_subdev_state *sd_state,
> -				    struct v4l2_rect *r, unsigned int which)
> +				    struct v4l2_rect *r)
>  {
>  	struct v4l2_mbus_framefmt *src_fmt;
>  	const struct v4l2_rect *sink_crop;
>  	struct v4l2_rect *src_crop;
>  
> -	src_crop = rkisp1_isp_get_pad_crop(isp, sd_state,
> -					   RKISP1_ISP_PAD_SOURCE_VIDEO,
> -					   which);
> -	sink_crop = rkisp1_isp_get_pad_crop(isp, sd_state,
> -					    RKISP1_ISP_PAD_SINK_VIDEO,
> -					    which);
> +	src_crop = v4l2_subdev_get_pad_crop(&isp->sd, sd_state,
> +					    RKISP1_ISP_PAD_SOURCE_VIDEO);
> +	sink_crop = v4l2_subdev_get_pad_crop(&isp->sd, sd_state,
> +					     RKISP1_ISP_PAD_SINK_VIDEO);
>  
>  	src_crop->left = ALIGN(r->left, 2);
>  	src_crop->width = ALIGN(r->width, 2);
> @@ -611,24 +584,22 @@ static void rkisp1_isp_set_src_crop(struct rkisp1_isp *isp,
>  	*r = *src_crop;
>  
>  	/* Propagate to out format */
> -	src_fmt = rkisp1_isp_get_pad_fmt(isp, sd_state,
> -					 RKISP1_ISP_PAD_SOURCE_VIDEO, which);
> -	rkisp1_isp_set_src_fmt(isp, sd_state, src_fmt, which);
> +	src_fmt = v4l2_subdev_get_pad_format(&isp->sd, sd_state,
> +					     RKISP1_ISP_PAD_SOURCE_VIDEO);
> +	rkisp1_isp_set_src_fmt(isp, sd_state, src_fmt);
>  }
>  
>  static void rkisp1_isp_set_sink_crop(struct rkisp1_isp *isp,
>  				     struct v4l2_subdev_state *sd_state,
> -				     struct v4l2_rect *r, unsigned int which)
> +				     struct v4l2_rect *r)
>  {
>  	struct v4l2_rect *sink_crop, *src_crop;
>  	const struct v4l2_mbus_framefmt *sink_fmt;
>  
> -	sink_crop = rkisp1_isp_get_pad_crop(isp, sd_state,
> -					    RKISP1_ISP_PAD_SINK_VIDEO,
> -					    which);
> -	sink_fmt = rkisp1_isp_get_pad_fmt(isp, sd_state,
> -					  RKISP1_ISP_PAD_SINK_VIDEO,
> -					  which);
> +	sink_crop = v4l2_subdev_get_pad_crop(&isp->sd, sd_state,
> +					     RKISP1_ISP_PAD_SINK_VIDEO);
> +	sink_fmt = v4l2_subdev_get_pad_format(&isp->sd, sd_state,
> +					      RKISP1_ISP_PAD_SINK_VIDEO);
>  
>  	sink_crop->left = ALIGN(r->left, 2);
>  	sink_crop->width = ALIGN(r->width, 2);
> @@ -639,32 +610,28 @@ static void rkisp1_isp_set_sink_crop(struct rkisp1_isp *isp,
>  	*r = *sink_crop;
>  
>  	/* Propagate to out crop */
> -	src_crop = rkisp1_isp_get_pad_crop(isp, sd_state,
> -					   RKISP1_ISP_PAD_SOURCE_VIDEO, which);
> -	rkisp1_isp_set_src_crop(isp, sd_state, src_crop, which);
> +	src_crop = v4l2_subdev_get_pad_crop(&isp->sd, sd_state,
> +					    RKISP1_ISP_PAD_SOURCE_VIDEO);
> +	rkisp1_isp_set_src_crop(isp, sd_state, src_crop);
>  }
>  
>  static void rkisp1_isp_set_sink_fmt(struct rkisp1_isp *isp,
>  				    struct v4l2_subdev_state *sd_state,
> -				    struct v4l2_mbus_framefmt *format,
> -				    unsigned int which)
> +				    struct v4l2_mbus_framefmt *format)
>  {
>  	const struct rkisp1_mbus_info *mbus_info;
>  	struct v4l2_mbus_framefmt *sink_fmt;
>  	struct v4l2_rect *sink_crop;
>  	bool is_yuv;
>  
> -	sink_fmt = rkisp1_isp_get_pad_fmt(isp, sd_state,
> -					  RKISP1_ISP_PAD_SINK_VIDEO,
> -					  which);
> +	sink_fmt = v4l2_subdev_get_pad_format(&isp->sd, sd_state,
> +					      RKISP1_ISP_PAD_SINK_VIDEO);
>  	sink_fmt->code = format->code;
>  	mbus_info = rkisp1_mbus_info_get_by_code(sink_fmt->code);
>  	if (!mbus_info || !(mbus_info->direction & RKISP1_ISP_SD_SINK)) {
>  		sink_fmt->code = RKISP1_DEF_SINK_PAD_FMT;
>  		mbus_info = rkisp1_mbus_info_get_by_code(sink_fmt->code);
>  	}
> -	if (which == V4L2_SUBDEV_FORMAT_ACTIVE)
> -		isp->sink_fmt = mbus_info;
>  
>  	sink_fmt->width = clamp_t(u32, format->width,
>  				  RKISP1_ISP_MIN_WIDTH,
> @@ -706,23 +673,9 @@ static void rkisp1_isp_set_sink_fmt(struct rkisp1_isp *isp,
>  	*format = *sink_fmt;
>  
>  	/* Propagate to in crop */
> -	sink_crop = rkisp1_isp_get_pad_crop(isp, sd_state,
> -					    RKISP1_ISP_PAD_SINK_VIDEO,
> -					    which);
> -	rkisp1_isp_set_sink_crop(isp, sd_state, sink_crop, which);
> -}
> -
> -static int rkisp1_isp_get_fmt(struct v4l2_subdev *sd,
> -			      struct v4l2_subdev_state *sd_state,
> -			      struct v4l2_subdev_format *fmt)
> -{
> -	struct rkisp1_isp *isp = to_rkisp1_isp(sd);
> -
> -	mutex_lock(&isp->ops_lock);
> -	fmt->format = *rkisp1_isp_get_pad_fmt(isp, sd_state, fmt->pad,
> -					      fmt->which);
> -	mutex_unlock(&isp->ops_lock);
> -	return 0;
> +	sink_crop = v4l2_subdev_get_pad_crop(&isp->sd, sd_state,
> +					     RKISP1_ISP_PAD_SINK_VIDEO);
> +	rkisp1_isp_set_sink_crop(isp, sd_state, sink_crop);
>  }
>  
>  static int rkisp1_isp_set_fmt(struct v4l2_subdev *sd,
> @@ -731,18 +684,13 @@ static int rkisp1_isp_set_fmt(struct v4l2_subdev *sd,
>  {
>  	struct rkisp1_isp *isp = to_rkisp1_isp(sd);
>  
> -	mutex_lock(&isp->ops_lock);
>  	if (fmt->pad == RKISP1_ISP_PAD_SINK_VIDEO)
> -		rkisp1_isp_set_sink_fmt(isp, sd_state, &fmt->format,
> -					fmt->which);
> +		rkisp1_isp_set_sink_fmt(isp, sd_state, &fmt->format);
>  	else if (fmt->pad == RKISP1_ISP_PAD_SOURCE_VIDEO)
> -		rkisp1_isp_set_src_fmt(isp, sd_state, &fmt->format,
> -				       fmt->which);
> +		rkisp1_isp_set_src_fmt(isp, sd_state, &fmt->format);
>  	else
> -		fmt->format = *rkisp1_isp_get_pad_fmt(isp, sd_state, fmt->pad,
> -						      fmt->which);
> +		fmt->format = *v4l2_subdev_get_pad_format(sd, sd_state, fmt->pad);
>  
> -	mutex_unlock(&isp->ops_lock);
>  	return 0;
>  }
>  
> @@ -750,39 +698,37 @@ static int rkisp1_isp_get_selection(struct v4l2_subdev *sd,
>  				    struct v4l2_subdev_state *sd_state,
>  				    struct v4l2_subdev_selection *sel)
>  {
> -	struct rkisp1_isp *isp = to_rkisp1_isp(sd);
>  	int ret = 0;
>  
>  	if (sel->pad != RKISP1_ISP_PAD_SOURCE_VIDEO &&
>  	    sel->pad != RKISP1_ISP_PAD_SINK_VIDEO)
>  		return -EINVAL;
>  
> -	mutex_lock(&isp->ops_lock);
>  	switch (sel->target) {
>  	case V4L2_SEL_TGT_CROP_BOUNDS:
>  		if (sel->pad == RKISP1_ISP_PAD_SINK_VIDEO) {
>  			struct v4l2_mbus_framefmt *fmt;
>  
> -			fmt = rkisp1_isp_get_pad_fmt(isp, sd_state, sel->pad,
> -						     sel->which);
> +			fmt = v4l2_subdev_get_pad_format(sd, sd_state, sel->pad);
>  			sel->r.height = fmt->height;
>  			sel->r.width = fmt->width;
>  			sel->r.left = 0;
>  			sel->r.top = 0;
>  		} else {
> -			sel->r = *rkisp1_isp_get_pad_crop(isp, sd_state,
> -							  RKISP1_ISP_PAD_SINK_VIDEO,
> -							  sel->which);
> +			sel->r = *v4l2_subdev_get_pad_crop(sd, sd_state,
> +							   RKISP1_ISP_PAD_SINK_VIDEO);
>  		}
>  		break;
> +
>  	case V4L2_SEL_TGT_CROP:
> -		sel->r = *rkisp1_isp_get_pad_crop(isp, sd_state, sel->pad,
> -						  sel->which);
> +		sel->r = *v4l2_subdev_get_pad_crop(sd, sd_state, sel->pad);
>  		break;
> +
>  	default:
>  		ret = -EINVAL;
> +		break;
>  	}
> -	mutex_unlock(&isp->ops_lock);
> +
>  	return ret;
>  }
>  
> @@ -798,15 +744,14 @@ static int rkisp1_isp_set_selection(struct v4l2_subdev *sd,
>  
>  	dev_dbg(isp->rkisp1->dev, "%s: pad: %d sel(%d,%d)/%dx%d\n", __func__,
>  		sel->pad, sel->r.left, sel->r.top, sel->r.width, sel->r.height);
> -	mutex_lock(&isp->ops_lock);
> +
>  	if (sel->pad == RKISP1_ISP_PAD_SINK_VIDEO)
> -		rkisp1_isp_set_sink_crop(isp, sd_state, &sel->r, sel->which);
> +		rkisp1_isp_set_sink_crop(isp, sd_state, &sel->r);
>  	else if (sel->pad == RKISP1_ISP_PAD_SOURCE_VIDEO)
> -		rkisp1_isp_set_src_crop(isp, sd_state, &sel->r, sel->which);
> +		rkisp1_isp_set_src_crop(isp, sd_state, &sel->r);
>  	else
>  		ret = -EINVAL;
>  
> -	mutex_unlock(&isp->ops_lock);
>  	return ret;
>  }
>  
> @@ -824,7 +769,7 @@ static const struct v4l2_subdev_pad_ops rkisp1_isp_pad_ops = {
>  	.get_selection = rkisp1_isp_get_selection,
>  	.set_selection = rkisp1_isp_set_selection,
>  	.init_cfg = rkisp1_isp_init_config,
> -	.get_fmt = rkisp1_isp_get_fmt,
> +	.get_fmt = v4l2_subdev_get_fmt,
>  	.set_fmt = rkisp1_isp_set_fmt,
>  	.link_validate = v4l2_subdev_link_validate_default,
>  };
> @@ -837,6 +782,7 @@ static int rkisp1_isp_s_stream(struct v4l2_subdev *sd, int enable)
>  {
>  	struct rkisp1_isp *isp = to_rkisp1_isp(sd);
>  	struct rkisp1_device *rkisp1 = isp->rkisp1;
> +	struct v4l2_subdev_state *sd_state;
>  	struct media_pad *source_pad;
>  	struct media_pad *sink_pad;
>  	enum v4l2_mbus_type mbus_type;
> @@ -877,21 +823,23 @@ static int rkisp1_isp_s_stream(struct v4l2_subdev *sd, int enable)
>  	}
>  
>  	isp->frame_sequence = -1;
> -	mutex_lock(&isp->ops_lock);
> -	ret = rkisp1_config_cif(isp, mbus_type, mbus_flags);
> +
> +	sd_state = v4l2_subdev_lock_and_get_active_state(sd);
> +
> +	ret = rkisp1_config_cif(isp, sd_state, mbus_type, mbus_flags);
>  	if (ret)
> -		goto mutex_unlock;
> +		goto out_unlock;
>  
> -	rkisp1_isp_start(isp);
> +	rkisp1_isp_start(isp, sd_state);
>  
>  	ret = v4l2_subdev_call(rkisp1->source, video, s_stream, true);
>  	if (ret) {
>  		rkisp1_isp_stop(isp);
> -		goto mutex_unlock;
> +		goto out_unlock;
>  	}
>  
> -mutex_unlock:
> -	mutex_unlock(&isp->ops_lock);
> +out_unlock:
> +	v4l2_subdev_unlock_state(sd_state);
>  	return ret;
>  }
>  
> @@ -929,9 +877,6 @@ static const struct v4l2_subdev_ops rkisp1_isp_ops = {
>  
>  int rkisp1_isp_register(struct rkisp1_device *rkisp1)
>  {
> -	struct v4l2_subdev_state state = {
> -		.pads = rkisp1->isp.pad_cfg
> -	};
>  	struct rkisp1_isp *isp = &rkisp1->isp;
>  	struct media_pad *pads = isp->pads;
>  	struct v4l2_subdev *sd = &isp->sd;
> @@ -952,27 +897,26 @@ int rkisp1_isp_register(struct rkisp1_device *rkisp1)
>  	pads[RKISP1_ISP_PAD_SOURCE_VIDEO].flags = MEDIA_PAD_FL_SOURCE;
>  	pads[RKISP1_ISP_PAD_SOURCE_STATS].flags = MEDIA_PAD_FL_SOURCE;
>  
> -	isp->sink_fmt = rkisp1_mbus_info_get_by_code(RKISP1_DEF_SINK_PAD_FMT);
> -	isp->src_fmt = rkisp1_mbus_info_get_by_code(RKISP1_DEF_SRC_PAD_FMT);
> -
> -	mutex_init(&isp->ops_lock);
>  	ret = media_entity_pads_init(&sd->entity, RKISP1_ISP_PAD_MAX, pads);
>  	if (ret)
> -		goto error;
> +		goto err_entity_cleanup;
> +
> +	ret = v4l2_subdev_init_finalize(sd);
> +	if (ret)
> +		goto err_subdev_cleanup;
>  
>  	ret = v4l2_device_register_subdev(&rkisp1->v4l2_dev, sd);
>  	if (ret) {
>  		dev_err(rkisp1->dev, "Failed to register isp subdev\n");
> -		goto error;
> +		goto err_subdev_cleanup;
>  	}
>  
> -	rkisp1_isp_init_config(sd, &state);
> -
>  	return 0;
>  
> -error:
> +err_subdev_cleanup:
> +	v4l2_subdev_cleanup(sd);
> +err_entity_cleanup:
>  	media_entity_cleanup(&sd->entity);
> -	mutex_destroy(&isp->ops_lock);
>  	isp->sd.v4l2_dev = NULL;
>  	return ret;
>  }
> @@ -986,7 +930,6 @@ void rkisp1_isp_unregister(struct rkisp1_device *rkisp1)
>  
>  	v4l2_device_unregister_subdev(&isp->sd);
>  	media_entity_cleanup(&isp->sd.entity);
> -	mutex_destroy(&isp->ops_lock);
>  }
>  
>  /* ----------------------------------------------------------------------------
> -- 
> Regards,
> 
> Laurent Pinchart
> 



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