[PATCH v2 30/77] media: imx: capture: Support creating immutable link to capture device
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: 2021-02-15 04:34:24
Subsystem:
media drivers for freescale imx, media input infrastructure (v4l/dvb), staging subsystem, the rest · Maintainers:
Steve Longerbeam, Philipp Zabel, Mauro Carvalho Chehab, Greg Kroah-Hartman, Linus Torvalds
When the subdevice connected to the capture device has a single possible sink, there's no point in making the link mutable. Support creating immutable links. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Rui Miguel Silva <rmfrfs@gmail.com> --- Changes since v1: - Pass link flags to imx_media_capture_device_register() --- drivers/staging/media/imx/imx-ic-prpencvf.c | 2 +- drivers/staging/media/imx/imx-media-capture.c | 7 +++++-- drivers/staging/media/imx/imx-media-csi.c | 2 +- drivers/staging/media/imx/imx-media.h | 3 ++- drivers/staging/media/imx/imx7-media-csi.c | 2 +- 5 files changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/media/imx/imx-ic-prpencvf.c b/drivers/staging/media/imx/imx-ic-prpencvf.c
index 88d69425e1b3..d990553de87b 100644
--- a/drivers/staging/media/imx/imx-ic-prpencvf.c
+++ b/drivers/staging/media/imx/imx-ic-prpencvf.c@@ -1269,7 +1269,7 @@ static int prp_registered(struct v4l2_subdev *sd) if (IS_ERR(priv->vdev)) return PTR_ERR(priv->vdev); - ret = imx_media_capture_device_register(priv->vdev); + ret = imx_media_capture_device_register(priv->vdev, 0); if (ret) goto remove_vdev;
diff --git a/drivers/staging/media/imx/imx-media-capture.c b/drivers/staging/media/imx/imx-media-capture.c
index c4360866f7f6..93ba09236010 100644
--- a/drivers/staging/media/imx/imx-media-capture.c
+++ b/drivers/staging/media/imx/imx-media-capture.c@@ -898,7 +898,8 @@ static int capture_init_format(struct capture_priv *priv) return 0; } -int imx_media_capture_device_register(struct imx_media_video_dev *vdev) +int imx_media_capture_device_register(struct imx_media_video_dev *vdev, + u32 link_flags) { struct capture_priv *priv = to_capture_priv(vdev); struct v4l2_subdev *sd = priv->src_sd;
@@ -927,8 +928,10 @@ int imx_media_capture_device_register(struct imx_media_video_dev *vdev) video_device_node_name(vfd)); /* Create the link from the src_sd devnode pad to device node. */ + if (link_flags & MEDIA_LNK_FL_IMMUTABLE) + link_flags |= MEDIA_LNK_FL_ENABLED; ret = media_create_pad_link(&sd->entity, priv->src_sd_pad, - &vfd->entity, 0, 0); + &vfd->entity, 0, link_flags); if (ret) { dev_err(priv->dev, "failed to create link to device node\n"); video_unregister_device(vfd);
diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c
index 45c92816facc..8d02939aaa23 100644
--- a/drivers/staging/media/imx/imx-media-csi.c
+++ b/drivers/staging/media/imx/imx-media-csi.c@@ -1788,7 +1788,7 @@ static int csi_registered(struct v4l2_subdev *sd) goto free_fim; } - ret = imx_media_capture_device_register(priv->vdev); + ret = imx_media_capture_device_register(priv->vdev, 0); if (ret) goto remove_vdev;
diff --git a/drivers/staging/media/imx/imx-media.h b/drivers/staging/media/imx/imx-media.h
index 2ea2e62ddf86..492d9a64e704 100644
--- a/drivers/staging/media/imx/imx-media.h
+++ b/drivers/staging/media/imx/imx-media.h@@ -288,7 +288,8 @@ struct imx_media_video_dev * imx_media_capture_device_init(struct device *dev, struct v4l2_subdev *src_sd, int pad, bool legacy_api); void imx_media_capture_device_remove(struct imx_media_video_dev *vdev); -int imx_media_capture_device_register(struct imx_media_video_dev *vdev); +int imx_media_capture_device_register(struct imx_media_video_dev *vdev, + u32 link_flags); void imx_media_capture_device_unregister(struct imx_media_video_dev *vdev); struct imx_media_buffer * imx_media_capture_device_next_buf(struct imx_media_video_dev *vdev);
diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c
index 3bf2505de6a2..90cf4b889e23 100644
--- a/drivers/staging/media/imx/imx7-media-csi.c
+++ b/drivers/staging/media/imx/imx7-media-csi.c@@ -1104,7 +1104,7 @@ static int imx7_csi_registered(struct v4l2_subdev *sd) if (IS_ERR(csi->vdev)) return PTR_ERR(csi->vdev); - ret = imx_media_capture_device_register(csi->vdev); + ret = imx_media_capture_device_register(csi->vdev, 0); if (ret) imx_media_capture_device_remove(csi->vdev);
--
Regards,
Laurent Pinchart