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Commit 668773b8 authored by Guennadi Liakhovetski's avatar Guennadi Liakhovetski Committed by Mauro Carvalho Chehab
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[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: default avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Acked-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: default avatarLad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent ff5430de

drivers/media/v4l2-core/v4l2-common.c

+2 −0
Original line number Diff line number Diff line
@@ -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);

include/media/v4l2-subdev.h

+2 −0
Original line number Diff line number Diff line
@@ -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) \