summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2013-06-10 15:07:35 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2013-06-21 16:28:36 -0300
commit668773b84604926519e2baf444f382f88d799d41 (patch)
treecd41634a511a1040e2fbe62fe9227a64ce009fb7
parentff5430de70e8137daccecfa1211509f95fcc8d25 (diff)
downloadop-kernel-dev-668773b84604926519e2baf444f382f88d799d41.zip
op-kernel-dev-668773b84604926519e2baf444f382f88d799d41.tar.gz
[media] V4L2: add a device pointer to struct v4l2_subdev
It is often useful to have simple means to get from a subdevice to the underlying physical device. This patch adds such a pointer to struct v4l2_subdev and sets it accordingly in the I2C and SPI cases. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r--drivers/media/v4l2-core/v4l2-common.c2
-rw-r--r--include/media/v4l2-subdev.h2
2 files changed, 4 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c
index 3b2a760..a95e5e2 100644
--- a/drivers/media/v4l2-core/v4l2-common.c
+++ b/drivers/media/v4l2-core/v4l2-common.c
@@ -237,6 +237,7 @@ void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client,
sd->flags |= V4L2_SUBDEV_FL_IS_I2C;
/* the owner is the same as the i2c_client's driver owner */
sd->owner = client->driver->driver.owner;
+ sd->dev = &client->dev;
/* i2c_client and v4l2_subdev point to one another */
v4l2_set_subdevdata(sd, client);
i2c_set_clientdata(client, sd);
@@ -370,6 +371,7 @@ void v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi,
sd->flags |= V4L2_SUBDEV_FL_IS_SPI;
/* the owner is the same as the spi_device's driver owner */
sd->owner = spi->dev.driver->owner;
+ sd->dev = &spi->dev;
/* spi_device and v4l2_subdev point to one another */
v4l2_set_subdevdata(sd, spi);
spi_set_drvdata(spi, sd);
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index 21fc9e1..5fbb266 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -583,6 +583,8 @@ struct v4l2_subdev {
void *host_priv;
/* subdev device node */
struct video_device *devnode;
+ /* pointer to the physical device, if any */
+ struct device *dev;
};
#define media_entity_to_v4l2_subdev(ent) \
OpenPOWER on IntegriCloud