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[media] zr364xx: add suspend/resume support

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And fix initial control setup.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2012-06-08 06:43:59 -03:00 committed by Mauro Carvalho Chehab
parent a065729d12
commit 587a5765b2
1 changed files with 57 additions and 12 deletions
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69
drivers/media/video/zr364xx.c
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@ -196,6 +196,7 @@ struct zr364xx_camera {
const struct zr364xx_fmt *fmt;
struct videobuf_queue vb_vidq;
bool was_streaming;
};
/* buffer for one video frame */
@ -1119,20 +1120,10 @@ static inline int zr364xx_stop_acquire(struct zr364xx_camera *cam)
return 0;
}
static int zr364xx_vidioc_streamon(struct file *file, void *priv,
enum v4l2_buf_type type)
static int zr364xx_prepare(struct zr364xx_camera *cam)
{
struct zr364xx_camera *cam = video_drvdata(file);
int i, j;
int res;
DBG("%s\n", __func__);
if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (cam->owner && cam->owner != priv)
return -EBUSY;
int i, j;
for (i = 0; init[cam->method][i].size != -1; i++) {
res = send_control_msg(cam->udev, 1, init[cam->method][i].value,
@ -1153,6 +1144,27 @@ static int zr364xx_vidioc_streamon(struct file *file, void *priv,
cam->buffer.frame[j].ulState = ZR364XX_READ_IDLE;
cam->buffer.frame[j].cur_size = 0;
}
v4l2_ctrl_handler_setup(&cam->ctrl_handler);
return 0;
}
static int zr364xx_vidioc_streamon(struct file *file, void *priv,
enum v4l2_buf_type type)
{
struct zr364xx_camera *cam = video_drvdata(file);
int res;
DBG("%s\n", __func__);
if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (cam->owner && cam->owner != priv)
return -EBUSY;
res = zr364xx_prepare(cam);
if (res)
return res;
res = videobuf_streamon(&cam->vb_vidq);
if (res == 0) {
zr364xx_start_acquire(cam);
@ -1578,6 +1590,34 @@ static void zr364xx_disconnect(struct usb_interface *intf)
}
#ifdef CONFIG_PM
static int zr364xx_suspend(struct usb_interface *intf, pm_message_t message)
{
struct zr364xx_camera *cam = usb_get_intfdata(intf);
cam->was_streaming = cam->b_acquire;
if (!cam->was_streaming)
return 0;
zr364xx_stop_acquire(cam);
zr364xx_stop_readpipe(cam);
return 0;
}
static int zr364xx_resume(struct usb_interface *intf)
{
struct zr364xx_camera *cam = usb_get_intfdata(intf);
int res;
if (!cam->was_streaming)
return 0;
zr364xx_start_readpipe(cam);
res = zr364xx_prepare(cam);
if (!res)
zr364xx_start_acquire(cam);
return res;
}
#endif
/**********************/
/* Module integration */
@ -1587,6 +1627,11 @@ static struct usb_driver zr364xx_driver = {
.name = "zr364xx",
.probe = zr364xx_probe,
.disconnect = zr364xx_disconnect,
#ifdef CONFIG_PM
.suspend = zr364xx_suspend,
.resume = zr364xx_resume,
.reset_resume = zr364xx_resume,
#endif
.id_table = device_table
};