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V4L/DVB (12513): soc-camera: add support for camera-host controls 

Until now soc-camera only supported client (sensor) controls. This patch
enables camera-host drivers to implement their own controls too.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Guennadi Liakhovetski 2009-08-25 11:44:15 -03:00 committed by Mauro Carvalho Chehab
parent a813d01f82
commit 2840d2497b
2 changed files with 28 additions and 0 deletions
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24
drivers/media/video/soc_camera.c
View File

@ -633,6 +633,7 @@ static int soc_camera_queryctrl(struct file *file, void *priv,
{
struct soc_camera_file *icf = file->private_data;
struct soc_camera_device *icd = icf->icd;
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
int i;
WARN_ON(priv != file->private_data);
@ -640,6 +641,15 @@ static int soc_camera_queryctrl(struct file *file, void *priv,
if (!qc->id)
return -EINVAL;
/* First check host controls */
for (i = 0; i < ici->ops->num_controls; i++)
if (qc->id == ici->ops->controls[i].id) {
memcpy(qc, &(ici->ops->controls[i]),
sizeof(*qc));
return 0;
}
/* Then device controls */
for (i = 0; i < icd->ops->num_controls; i++)
if (qc->id == icd->ops->controls[i].id) {
memcpy(qc, &(icd->ops->controls[i]),
@ -656,6 +666,7 @@ static int soc_camera_g_ctrl(struct file *file, void *priv,
struct soc_camera_file *icf = file->private_data;
struct soc_camera_device *icd = icf->icd;
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
int ret;
WARN_ON(priv != file->private_data);
@ -672,6 +683,12 @@ static int soc_camera_g_ctrl(struct file *file, void *priv,
return 0;
}
if (ici->ops->get_ctrl) {
ret = ici->ops->get_ctrl(icd, ctrl);
if (ret != -ENOIOCTLCMD)
return ret;
}
return v4l2_device_call_until_err(&ici->v4l2_dev, (__u32)icd, core, g_ctrl, ctrl);
}
@ -681,9 +698,16 @@ static int soc_camera_s_ctrl(struct file *file, void *priv,
struct soc_camera_file *icf = file->private_data;
struct soc_camera_device *icd = icf->icd;
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
int ret;
WARN_ON(priv != file->private_data);
if (ici->ops->set_ctrl) {
ret = ici->ops->set_ctrl(icd, ctrl);
if (ret != -ENOIOCTLCMD)
return ret;
}
return v4l2_device_call_until_err(&ici->v4l2_dev, (__u32)icd, core, s_ctrl, ctrl);
}

4
include/media/soc_camera.h
View File

@ -83,7 +83,11 @@ struct soc_camera_host_ops {
int (*reqbufs)(struct soc_camera_file *, struct v4l2_requestbuffers *);
int (*querycap)(struct soc_camera_host *, struct v4l2_capability *);
int (*set_bus_param)(struct soc_camera_device *, __u32);
int (*get_ctrl)(struct soc_camera_device *, struct v4l2_control *);
int (*set_ctrl)(struct soc_camera_device *, struct v4l2_control *);
unsigned int (*poll)(struct file *, poll_table *);
const struct v4l2_queryctrl *controls;
int num_controls;
};
#define SOCAM_SENSOR_INVERT_PCLK (1 << 0)