media: atomisp: Remove source_pad parameter from functions and structs

Now that there is only 1 source-pad for an asd there is no need
to have a parameter for this in various places.

Remove the source_pad function parameter and
atomisp_sub_device.capture_pad data member.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/staging/media/atomisp/pci/atomisp_cmd.c

@@ -229,8 +229,8 @@ int atomisp_freq_scaling(struct atomisp_device *isp,
 		goto done;
 	}
 
-	curr_rules.width = isp->asd.fmt[isp->asd.capture_pad].fmt.width;
-	curr_rules.height = isp->asd.fmt[isp->asd.capture_pad].fmt.height;
+	curr_rules.width = isp->asd.fmt[ATOMISP_SUBDEV_PAD_SOURCE].fmt.width;
+	curr_rules.height = isp->asd.fmt[ATOMISP_SUBDEV_PAD_SOURCE].fmt.height;
 	curr_rules.fps = fps;
 	curr_rules.run_mode = isp->asd.run_mode->val;
 
@@ -1548,13 +1548,12 @@ void atomisp_free_internal_buffers(struct atomisp_sub_device *asd)
 }
 
 static void atomisp_update_grid_info(struct atomisp_sub_device *asd,
-				     enum ia_css_pipe_id pipe_id,
-				     int source_pad)
+				     enum ia_css_pipe_id pipe_id)
 {
 	struct atomisp_device *isp = asd->isp;
 	int err;
 
-	if (atomisp_css_get_grid_info(asd, pipe_id, source_pad))
+	if (atomisp_css_get_grid_info(asd, pipe_id))
 		return;
 
 	/* We must free all buffers because they no longer match
@@ -4105,8 +4104,7 @@ static int css_input_resolution_changed(struct atomisp_sub_device *asd,
 
 static int atomisp_set_fmt_to_isp(struct video_device *vdev,
 				  struct ia_css_frame_info *output_info,
-				  struct v4l2_pix_format *pix,
-				  unsigned int source_pad)
+				  struct v4l2_pix_format *pix)
 {
 	struct camera_mipi_info *mipi_info;
 	struct atomisp_device *isp = video_get_drvdata(vdev);
@@ -4279,7 +4277,7 @@ static int atomisp_set_fmt_to_isp(struct video_device *vdev,
 		return ret;
 	}
 
-	atomisp_update_grid_info(asd, pipe_id, source_pad);
+	atomisp_update_grid_info(asd, pipe_id);
 	return 0;
 }
 
@@ -4303,7 +4301,7 @@ static void atomisp_get_dis_envelop(struct atomisp_sub_device *asd,
 }
 
 static void atomisp_check_copy_mode(struct atomisp_sub_device *asd,
-				    int source_pad, const struct v4l2_pix_format *f)
+				    const struct v4l2_pix_format *f)
 {
 	struct v4l2_mbus_framefmt *sink, *src;
 
@@ -4316,7 +4314,7 @@ static void atomisp_check_copy_mode(struct atomisp_sub_device *asd,
 	sink = atomisp_subdev_get_ffmt(&asd->subdev, NULL,
 				       V4L2_SUBDEV_FORMAT_ACTIVE, ATOMISP_SUBDEV_PAD_SINK);
 	src = atomisp_subdev_get_ffmt(&asd->subdev, NULL,
-				      V4L2_SUBDEV_FORMAT_ACTIVE, source_pad);
+				      V4L2_SUBDEV_FORMAT_ACTIVE, ATOMISP_SUBDEV_PAD_SOURCE);
 
 	if (sink->code == src->code && sink->width == f->width && sink->height == f->height)
 		asd->copy_mode = true;
@@ -4439,7 +4437,6 @@ int atomisp_set_fmt(struct video_device *vdev, struct v4l2_format *f)
 		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
 	};
 	struct v4l2_rect isp_sink_crop;
-	u16 source_pad = atomisp_subdev_source_pad(vdev);
 	struct v4l2_subdev_fh fh;
 	int ret;
 
@@ -4447,12 +4444,9 @@ int atomisp_set_fmt(struct video_device *vdev, struct v4l2_format *f)
 	if (ret)
 		return ret;
 
-	if (source_pad >= ATOMISP_SUBDEV_PADS_NUM)
-		return -EINVAL;
-
 	dev_dbg(isp->dev,
-		"setting resolution %ux%u on pad %u bytesperline %u\n",
-		f->fmt.pix.width, f->fmt.pix.height, source_pad, f->fmt.pix.bytesperline);
+		"setting resolution %ux%u bytesperline %u\n",
+		f->fmt.pix.width, f->fmt.pix.height, f->fmt.pix.bytesperline);
 
 	v4l2_fh_init(&fh.vfh, vdev);
 
@@ -4501,9 +4495,9 @@ int atomisp_set_fmt(struct video_device *vdev, struct v4l2_format *f)
 	isp_source_fmt.code = format_bridge->mbus_code;
 	atomisp_subdev_set_ffmt(&asd->subdev, fh.state,
 				V4L2_SUBDEV_FORMAT_ACTIVE,
-				source_pad, &isp_source_fmt);
+				ATOMISP_SUBDEV_PAD_SOURCE, &isp_source_fmt);
 
-	if (!atomisp_subdev_format_conversion(asd, source_pad)) {
+	if (!atomisp_subdev_format_conversion(asd)) {
 		padding_w = 0;
 		padding_h = 0;
 	}
@@ -4511,8 +4505,6 @@ int atomisp_set_fmt(struct video_device *vdev, struct v4l2_format *f)
 	atomisp_get_dis_envelop(asd, f->fmt.pix.width, f->fmt.pix.height,
 				&dvs_env_w, &dvs_env_h);
 
-	asd->capture_pad = source_pad;
-
 	ret = atomisp_set_fmt_to_snr(vdev, &f->fmt.pix,
 				     padding_w, padding_h, dvs_env_w, dvs_env_h);
 	if (ret) {
@@ -4523,7 +4515,7 @@ int atomisp_set_fmt(struct video_device *vdev, struct v4l2_format *f)
 
 	atomisp_csi_lane_config(isp);
 
-	atomisp_check_copy_mode(asd, source_pad, &f->fmt.pix);
+	atomisp_check_copy_mode(asd, &f->fmt.pix);
 
 	isp_sink_crop = *atomisp_subdev_get_rect(&asd->subdev, NULL,
 			V4L2_SUBDEV_FORMAT_ACTIVE,
@@ -4534,7 +4526,7 @@ int atomisp_set_fmt(struct video_device *vdev, struct v4l2_format *f)
 	 * width or height) bigger than the desired result. */
 	if (isp_sink_crop.width * 9 / 10 < f->fmt.pix.width ||
 	    isp_sink_crop.height * 9 / 10 < f->fmt.pix.height ||
-	    (atomisp_subdev_format_conversion(asd, source_pad) &&
+	    (atomisp_subdev_format_conversion(asd) &&
 	     (asd->run_mode->val == ATOMISP_RUN_MODE_VIDEO ||
 	      asd->vfpp->val == ATOMISP_VFPP_DISABLE_SCALER))) {
 		isp_sink_crop.width = f->fmt.pix.width;
@@ -4548,7 +4540,7 @@ int atomisp_set_fmt(struct video_device *vdev, struct v4l2_format *f)
 					     &isp_sink_crop);
 		atomisp_subdev_set_selection(&asd->subdev, fh.state,
 					     V4L2_SUBDEV_FORMAT_ACTIVE,
-					     source_pad, V4L2_SEL_TGT_COMPOSE,
+					     ATOMISP_SUBDEV_PAD_SOURCE, V4L2_SEL_TGT_COMPOSE,
 					     0, &isp_sink_crop);
 	} else if (IS_MOFD) {
 		struct v4l2_rect main_compose = {0};
@@ -4567,7 +4559,7 @@ int atomisp_set_fmt(struct video_device *vdev, struct v4l2_format *f)
 
 		atomisp_subdev_set_selection(&asd->subdev, fh.state,
 					     V4L2_SUBDEV_FORMAT_ACTIVE,
-					     source_pad,
+					     ATOMISP_SUBDEV_PAD_SOURCE,
 					     V4L2_SEL_TGT_COMPOSE, 0,
 					     &main_compose);
 	} else {
@@ -4605,12 +4597,12 @@ int atomisp_set_fmt(struct video_device *vdev, struct v4l2_format *f)
 
 		atomisp_subdev_set_selection(&asd->subdev, fh.state,
 					     V4L2_SUBDEV_FORMAT_ACTIVE,
-					     source_pad,
+					     ATOMISP_SUBDEV_PAD_SOURCE,
 					     V4L2_SEL_TGT_COMPOSE, 0,
 					     &main_compose);
 	}
 
-	ret = atomisp_set_fmt_to_isp(vdev, &output_info, &f->fmt.pix, source_pad);
+	ret = atomisp_set_fmt_to_isp(vdev, &output_info, &f->fmt.pix);
 	if (ret) {
 		dev_warn(isp->dev, "Can't set format on ISP. Error %d\n", ret);
 		return -EINVAL;

drivers/staging/media/atomisp/pci/atomisp_compat.h

@@ -113,8 +113,7 @@ void atomisp_css_free_metadata_buffer(struct atomisp_metadata_buf
 				      *metadata_buf);
 
 int atomisp_css_get_grid_info(struct atomisp_sub_device *asd,
-			      enum ia_css_pipe_id pipe_id,
-			      int source_pad);
+			      enum ia_css_pipe_id pipe_id);
 
 int atomisp_alloc_3a_output_buf(struct atomisp_sub_device *asd);
 
@@ -276,7 +275,6 @@ int atomisp_css_video_configure_output(struct atomisp_sub_device *asd,
 				       enum ia_css_frame_format format);
 
 int atomisp_get_css_frame_info(struct atomisp_sub_device *asd,
-			       u16 source_pad,
 			       struct ia_css_frame_info *frame_info);
 
 int atomisp_css_video_configure_viewfinder(struct atomisp_sub_device *asd,

drivers/staging/media/atomisp/pci/atomisp_compat_css20.c

@@ -1328,8 +1328,7 @@ void atomisp_css_free_stat_buffers(struct atomisp_sub_device *asd)
 }
 
 int atomisp_css_get_grid_info(struct atomisp_sub_device *asd,
-			      enum ia_css_pipe_id pipe_id,
-			      int source_pad)
+			      enum ia_css_pipe_id pipe_id)
 {
 	struct ia_css_pipe_info p_info;
 	struct ia_css_grid_info old_info;
@@ -2432,7 +2431,6 @@ static unsigned int atomisp_get_pipe_index(struct atomisp_sub_device *asd)
 }
 
 int atomisp_get_css_frame_info(struct atomisp_sub_device *asd,
-			       u16 source_pad,
 			       struct ia_css_frame_info *frame_info)
 {
 	struct ia_css_pipe_info info;

drivers/staging/media/atomisp/pci/atomisp_fops.c

@@ -47,7 +47,6 @@ static int atomisp_queue_setup(struct vb2_queue *vq,
 			       unsigned int sizes[], struct device *alloc_devs[])
 {
 	struct atomisp_video_pipe *pipe = container_of(vq, struct atomisp_video_pipe, vb_queue);
-	u16 source_pad = atomisp_subdev_source_pad(&pipe->vdev);
 	int ret;
 
 	mutex_lock(&pipe->asd->isp->mutex); /* for get_css_frame_info() / set_fmt() */
@@ -56,7 +55,7 @@ static int atomisp_queue_setup(struct vb2_queue *vq,
 	 * When VIDIOC_S_FMT has not been called before VIDIOC_REQBUFS, then
 	 * this will fail. Call atomisp_set_fmt() ourselves and try again.
 	 */
-	ret = atomisp_get_css_frame_info(pipe->asd, source_pad, &pipe->frame_info);
+	ret = atomisp_get_css_frame_info(pipe->asd, &pipe->frame_info);
 	if (ret) {
 		struct v4l2_format f = {
 			.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420,
@@ -68,7 +67,7 @@ static int atomisp_queue_setup(struct vb2_queue *vq,
 		if (ret)
 			goto out;
 
-		ret = atomisp_get_css_frame_info(pipe->asd, source_pad, &pipe->frame_info);
+		ret = atomisp_get_css_frame_info(pipe->asd, &pipe->frame_info);
 		if (ret)
 			goto out;
 	}
@@ -654,7 +653,7 @@ static int atomisp_release(struct file *file)
 done:
 	atomisp_subdev_set_selection(&asd->subdev, fh.state,
 				     V4L2_SUBDEV_FORMAT_ACTIVE,
-				     atomisp_subdev_source_pad(vdev),
+				     ATOMISP_SUBDEV_PAD_SOURCE,
 				     V4L2_SEL_TGT_COMPOSE, 0,
 				     &clear_compose);
 	mutex_unlock(&isp->mutex);

drivers/staging/media/atomisp/pci/atomisp_ioctl.c

@@ -1131,7 +1131,7 @@ static unsigned int atomisp_sensor_start_stream(struct atomisp_sub_device *asd)
 
 	if (asd->run_mode->val == ATOMISP_RUN_MODE_VIDEO ||
 	    (asd->run_mode->val == ATOMISP_RUN_MODE_STILL_CAPTURE &&
-	     !atomisp_is_mbuscode_raw(asd->fmt[asd->capture_pad].fmt.code)))
+	     !atomisp_is_mbuscode_raw(asd->fmt[ATOMISP_SUBDEV_PAD_SOURCE].fmt.code)))
 		return 2;
 	else
 		return 1;
@@ -1159,7 +1159,6 @@ int atomisp_start_streaming(struct vb2_queue *vq, unsigned int count)
 {
 	struct atomisp_video_pipe *pipe = vq_to_pipe(vq);
 	struct atomisp_sub_device *asd = pipe->asd;
-	struct video_device *vdev = &pipe->vdev;
 	struct atomisp_device *isp = asd->isp;
 	struct pci_dev *pdev = to_pci_dev(isp->dev);
 	enum ia_css_pipe_id css_pipe_id;
@@ -1167,9 +1166,9 @@ int atomisp_start_streaming(struct vb2_queue *vq, unsigned int count)
 	unsigned long irqflags;
 	int ret;
 
-	mutex_lock(&isp->mutex);
+	dev_dbg(isp->dev, "Start stream\n");
 
-	dev_dbg(isp->dev, "Start stream on pad %d\n", atomisp_subdev_source_pad(vdev));
+	mutex_lock(&isp->mutex);
 
 	ret = atomisp_pipe_check(pipe, false);
 	if (ret)
@@ -1291,7 +1290,6 @@ void atomisp_stop_streaming(struct vb2_queue *vq)
 {
 	struct atomisp_video_pipe *pipe = vq_to_pipe(vq);
 	struct atomisp_sub_device *asd = pipe->asd;
-	struct video_device *vdev = &pipe->vdev;
 	struct atomisp_device *isp = asd->isp;
 	struct pci_dev *pdev = to_pci_dev(isp->dev);
 	enum ia_css_pipe_id css_pipe_id;
@@ -1300,10 +1298,9 @@ void atomisp_stop_streaming(struct vb2_queue *vq)
 	unsigned long flags;
 	int ret;
 
-	mutex_lock(&isp->mutex);
-
-	dev_dbg(isp->dev, "Stop stream on pad %d\n", atomisp_subdev_source_pad(vdev));
+	dev_dbg(isp->dev, "Stop stream\n");
 
+	mutex_lock(&isp->mutex);
 	/*
 	 * There is no guarantee that the buffers queued to / owned by the ISP
 	 * will properly be returned to the queue when stopping. Set a flag to

drivers/staging/media/atomisp/pci/atomisp_subdev.c

@@ -117,35 +117,19 @@ const struct atomisp_in_fmt_conv *atomisp_find_in_fmt_conv_by_atomisp_in_fmt(
 	return NULL;
 }
 
-bool atomisp_subdev_format_conversion(struct atomisp_sub_device *asd,
-				      unsigned int source_pad)
+bool atomisp_subdev_format_conversion(struct atomisp_sub_device *asd)
 {
 	struct v4l2_mbus_framefmt *sink, *src;
 
 	sink = atomisp_subdev_get_ffmt(&asd->subdev, NULL,
-				       V4L2_SUBDEV_FORMAT_ACTIVE,
-				       ATOMISP_SUBDEV_PAD_SINK);
+				       V4L2_SUBDEV_FORMAT_ACTIVE, ATOMISP_SUBDEV_PAD_SINK);
 	src = atomisp_subdev_get_ffmt(&asd->subdev, NULL,
-				      V4L2_SUBDEV_FORMAT_ACTIVE, source_pad);
+				      V4L2_SUBDEV_FORMAT_ACTIVE, ATOMISP_SUBDEV_PAD_SOURCE);
 
 	return atomisp_is_mbuscode_raw(sink->code)
 	       && !atomisp_is_mbuscode_raw(src->code);
 }
 
-uint16_t atomisp_subdev_source_pad(struct video_device *vdev)
-{
-	struct media_link *link;
-	u16 ret = 0;
-
-	list_for_each_entry(link, &vdev->entity.links, list) {
-		if (link->source) {
-			ret = link->source->index;
-			break;
-		}
-	}
-	return ret;
-}
-
 /*
  * V4L2 subdev operations
  */
@@ -404,8 +388,7 @@ int atomisp_subdev_set_selection(struct v4l2_subdev *sd,
 			padding_h = 12;
 		}
 
-		if (atomisp_subdev_format_conversion(isp_sd,
-						     isp_sd->capture_pad)
+		if (atomisp_subdev_format_conversion(isp_sd)
 		    && crop[pad]->width && crop[pad]->height) {
 			crop[pad]->width -= padding_w;
 			crop[pad]->height -= padding_h;

drivers/staging/media/atomisp/pci/atomisp_subdev.h

@@ -241,7 +241,6 @@ struct atomisp_sub_device {
 	struct v4l2_subdev subdev;
 	struct media_pad pads[ATOMISP_SUBDEV_PADS_NUM];
 	struct atomisp_pad_format fmt[ATOMISP_SUBDEV_PADS_NUM];
-	u16 capture_pad; /* main capture pad; defines much of isp config */
 
 	unsigned int output;
 	struct atomisp_video_pipe video_out;
@@ -340,9 +339,7 @@ const struct atomisp_in_fmt_conv
 	atomisp_in_fmt);
 
 const struct atomisp_in_fmt_conv *atomisp_find_in_fmt_conv_compressed(u32 code);
-bool atomisp_subdev_format_conversion(struct atomisp_sub_device *asd,
-				      unsigned int source_pad);
-uint16_t atomisp_subdev_source_pad(struct video_device *vdev);
+bool atomisp_subdev_format_conversion(struct atomisp_sub_device *asd);
 
 /* Get pointer to appropriate format */
 struct v4l2_mbus_framefmt