#include <linux/highmem.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-event.h>
#include <media/videobuf-vmalloc.h>
MODULE_DEVICE_TABLE(usb, device_table);
-struct zr364xx_mode {
- u32 color; /* output video color format */
- u32 brightness; /* brightness */
-};
-
/* frame structure */
struct zr364xx_framei {
unsigned long ulState; /* ulState:ZR364XX_READ_IDLE,
struct zr364xx_camera {
struct usb_device *udev; /* save off the usb device pointer */
struct usb_interface *interface;/* the interface for this device */
- struct video_device *vdev; /* v4l video device */
+ struct v4l2_device v4l2_dev;
+ struct v4l2_ctrl_handler ctrl_handler;
+ struct video_device vdev; /* v4l video device */
+ struct v4l2_fh *owner; /* owns the streaming */
int nb;
struct zr364xx_bufferi buffer;
int skip;
int height;
int method;
struct mutex lock;
- struct mutex open_lock;
- int users;
spinlock_t slock;
struct zr364xx_dmaqueue vidq;
- int resources;
int last_frame;
int cur_frame;
unsigned long frame_count;
const struct zr364xx_fmt *fmt;
struct videobuf_queue vb_vidq;
- enum v4l2_buf_type type;
- struct zr364xx_mode mode;
+ bool was_streaming;
};
/* buffer for one video frame */
transfer_buffer, size, CTRL_TIMEOUT);
kfree(transfer_buffer);
-
- if (status < 0)
- dev_err(&udev->dev,
- "Failed sending control message, error %d.\n", status);
-
return status;
}
loff_t * ppos)
{
struct zr364xx_camera *cam = video_drvdata(file);
+ int err = 0;
_DBG("%s\n", __func__);
if (!count)
return -EINVAL;
- if (cam->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
- zr364xx_vidioc_streamon(file, cam, cam->type) == 0) {
- DBG("%s: reading %d bytes at pos %d.\n", __func__, (int) count,
- (int) *ppos);
+ if (mutex_lock_interruptible(&cam->lock))
+ return -ERESTARTSYS;
+
+ err = zr364xx_vidioc_streamon(file, file->private_data,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE);
+ if (err == 0) {
+ DBG("%s: reading %d bytes at pos %d.\n", __func__,
+ (int) count, (int) *ppos);
/* NoMan Sux ! */
- return videobuf_read_one(&cam->vb_vidq, buf, count, ppos,
+ err = videobuf_read_one(&cam->vb_vidq, buf, count, ppos,
file->f_flags & O_NONBLOCK);
}
-
- return 0;
+ mutex_unlock(&cam->lock);
+ return err;
}
/* video buffer vmalloc implementation based partly on VIVI driver which is
return 0;
}
-static int res_get(struct zr364xx_camera *cam)
-{
- /* is it free? */
- mutex_lock(&cam->lock);
- if (cam->resources) {
- /* no, someone else uses it */
- mutex_unlock(&cam->lock);
- return 0;
- }
- /* it's free, grab it */
- cam->resources = 1;
- _DBG("res: get\n");
- mutex_unlock(&cam->lock);
- return 1;
-}
-
-static inline int res_check(struct zr364xx_camera *cam)
-{
- return cam->resources;
-}
-
-static void res_free(struct zr364xx_camera *cam)
-{
- mutex_lock(&cam->lock);
- cam->resources = 0;
- mutex_unlock(&cam->lock);
- _DBG("res: put\n");
-}
-
static int zr364xx_vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
strlcpy(cap->card, cam->udev->product, sizeof(cap->card));
strlcpy(cap->bus_info, dev_name(&cam->udev->dev),
sizeof(cap->bus_info));
- cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
+ cap->device_caps = V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_READWRITE |
V4L2_CAP_STREAMING;
+ cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
return 0;
}
return 0;
}
-static int zr364xx_vidioc_queryctrl(struct file *file, void *priv,
- struct v4l2_queryctrl *c)
+static int zr364xx_s_ctrl(struct v4l2_ctrl *ctrl)
{
- struct zr364xx_camera *cam;
-
- if (file == NULL)
- return -ENODEV;
- cam = video_drvdata(file);
-
- switch (c->id) {
- case V4L2_CID_BRIGHTNESS:
- c->type = V4L2_CTRL_TYPE_INTEGER;
- strcpy(c->name, "Brightness");
- c->minimum = 0;
- c->maximum = 127;
- c->step = 1;
- c->default_value = cam->mode.brightness;
- c->flags = 0;
- break;
- default:
- return -EINVAL;
- }
- return 0;
-}
-
-static int zr364xx_vidioc_s_ctrl(struct file *file, void *priv,
- struct v4l2_control *c)
-{
- struct zr364xx_camera *cam;
+ struct zr364xx_camera *cam =
+ container_of(ctrl->handler, struct zr364xx_camera, ctrl_handler);
int temp;
- if (file == NULL)
- return -ENODEV;
- cam = video_drvdata(file);
-
- switch (c->id) {
+ switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
- cam->mode.brightness = c->value;
/* hardware brightness */
- mutex_lock(&cam->lock);
send_control_msg(cam->udev, 1, 0x2001, 0, NULL, 0);
- temp = (0x60 << 8) + 127 - cam->mode.brightness;
+ temp = (0x60 << 8) + 127 - ctrl->val;
send_control_msg(cam->udev, 1, temp, 0, NULL, 0);
- mutex_unlock(&cam->lock);
break;
default:
return -EINVAL;
return 0;
}
-static int zr364xx_vidioc_g_ctrl(struct file *file, void *priv,
- struct v4l2_control *c)
-{
- struct zr364xx_camera *cam;
-
- if (file == NULL)
- return -ENODEV;
- cam = video_drvdata(file);
-
- switch (c->id) {
- case V4L2_CID_BRIGHTNESS:
- c->value = cam->mode.brightness;
- break;
- default:
- return -EINVAL;
- }
- return 0;
-}
-
static int zr364xx_vidioc_enum_fmt_vid_cap(struct file *file,
void *priv, struct v4l2_fmtdesc *f)
{
f->fmt.pix.field = V4L2_FIELD_NONE;
f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
- f->fmt.pix.colorspace = 0;
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
f->fmt.pix.priv = 0;
DBG("%s: V4L2_PIX_FMT_%s (%d) ok!\n", __func__,
decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name),
f->fmt.pix.height = cam->height;
f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
- f->fmt.pix.colorspace = 0;
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
f->fmt.pix.priv = 0;
return 0;
}
goto out;
}
- if (res_check(cam)) {
+ if (cam->owner) {
DBG("%s can't change format after started\n", __func__);
ret = -EBUSY;
goto out;
cam->width = f->fmt.pix.width;
cam->height = f->fmt.pix.height;
- dev_info(&cam->udev->dev, "%s: %dx%d mode selected\n", __func__,
+ DBG("%s: %dx%d mode selected\n", __func__,
cam->width, cam->height);
f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
- f->fmt.pix.colorspace = 0;
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
f->fmt.pix.priv = 0;
cam->vb_vidq.field = f->fmt.pix.field;
- cam->mode.color = V4L2_PIX_FMT_JPEG;
if (f->fmt.pix.width == 160 && f->fmt.pix.height == 120)
mode = 1;
static int zr364xx_vidioc_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *p)
{
- int rc;
struct zr364xx_camera *cam = video_drvdata(file);
- rc = videobuf_reqbufs(&cam->vb_vidq, p);
- return rc;
+
+ if (cam->owner && cam->owner != priv)
+ return -EBUSY;
+ return videobuf_reqbufs(&cam->vb_vidq, p);
}
static int zr364xx_vidioc_querybuf(struct file *file,
int rc;
struct zr364xx_camera *cam = video_drvdata(file);
_DBG("%s\n", __func__);
+ if (cam->owner && cam->owner != priv)
+ return -EBUSY;
rc = videobuf_qbuf(&cam->vb_vidq, p);
return rc;
}
int rc;
struct zr364xx_camera *cam = video_drvdata(file);
_DBG("%s\n", __func__);
+ if (cam->owner && cam->owner != priv)
+ return -EBUSY;
rc = videobuf_dqbuf(&cam->vb_vidq, p, file->f_flags & O_NONBLOCK);
return rc;
}
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 j;
int res;
+ int i, j;
- DBG("%s\n", __func__);
-
- if (cam->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
- dev_err(&cam->udev->dev, "invalid fh type0\n");
- return -EINVAL;
- }
- if (cam->type != type) {
- dev_err(&cam->udev->dev, "invalid fh type1\n");
- return -EINVAL;
- }
-
- if (!res_get(cam)) {
- dev_err(&cam->udev->dev, "stream busy\n");
- return -EBUSY;
+ for (i = 0; init[cam->method][i].size != -1; i++) {
+ res = send_control_msg(cam->udev, 1, init[cam->method][i].value,
+ 0, init[cam->method][i].bytes,
+ init[cam->method][i].size);
+ if (res < 0) {
+ dev_err(&cam->udev->dev,
+ "error during open sequence: %d\n", i);
+ return res;
+ }
}
+ cam->skip = 2;
cam->last_frame = -1;
cam->cur_frame = 0;
cam->frame_count = 0;
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);
- } else {
- res_free(cam);
+ cam->owner = file->private_data;
}
return res;
}
static int zr364xx_vidioc_streamoff(struct file *file, void *priv,
enum v4l2_buf_type type)
{
- int res;
struct zr364xx_camera *cam = video_drvdata(file);
DBG("%s\n", __func__);
- if (cam->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
- dev_err(&cam->udev->dev, "invalid fh type0\n");
+ if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
- }
- if (cam->type != type) {
- dev_err(&cam->udev->dev, "invalid fh type1\n");
- return -EINVAL;
- }
+ if (cam->owner && cam->owner != priv)
+ return -EBUSY;
zr364xx_stop_acquire(cam);
- res = videobuf_streamoff(&cam->vb_vidq);
- if (res < 0)
- return res;
- res_free(cam);
- return 0;
+ return videobuf_streamoff(&cam->vb_vidq);
}
/* open the camera */
static int zr364xx_open(struct file *file)
{
- struct video_device *vdev = video_devdata(file);
struct zr364xx_camera *cam = video_drvdata(file);
- struct usb_device *udev = cam->udev;
- int i, err;
+ int err;
DBG("%s\n", __func__);
- mutex_lock(&cam->open_lock);
+ if (mutex_lock_interruptible(&cam->lock))
+ return -ERESTARTSYS;
- if (cam->users) {
- err = -EBUSY;
+ err = v4l2_fh_open(file);
+ if (err)
goto out;
- }
-
- for (i = 0; init[cam->method][i].size != -1; i++) {
- err =
- send_control_msg(udev, 1, init[cam->method][i].value,
- 0, init[cam->method][i].bytes,
- init[cam->method][i].size);
- if (err < 0) {
- dev_err(&cam->udev->dev,
- "error during open sequence: %d\n", i);
- goto out;
- }
- }
-
- cam->skip = 2;
- cam->users++;
- file->private_data = vdev;
- cam->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- cam->fmt = formats;
-
- videobuf_queue_vmalloc_init(&cam->vb_vidq, &zr364xx_video_qops,
- NULL, &cam->slock,
- cam->type,
- V4L2_FIELD_NONE,
- sizeof(struct zr364xx_buffer), cam, NULL);
/* Added some delay here, since opening/closing the camera quickly,
* like Ekiga does during its startup, can crash the webcam
err = 0;
out:
- mutex_unlock(&cam->open_lock);
+ mutex_unlock(&cam->lock);
DBG("%s: %d\n", __func__, err);
return err;
}
-static void zr364xx_destroy(struct zr364xx_camera *cam)
+static void zr364xx_release(struct v4l2_device *v4l2_dev)
{
+ struct zr364xx_camera *cam =
+ container_of(v4l2_dev, struct zr364xx_camera, v4l2_dev);
unsigned long i;
- if (!cam) {
- printk(KERN_ERR KBUILD_MODNAME ", %s: no device\n", __func__);
- return;
- }
- mutex_lock(&cam->open_lock);
- if (cam->vdev)
- video_unregister_device(cam->vdev);
- cam->vdev = NULL;
-
- /* stops the read pipe if it is running */
- if (cam->b_acquire)
- zr364xx_stop_acquire(cam);
+ v4l2_device_unregister(&cam->v4l2_dev);
- zr364xx_stop_readpipe(cam);
+ videobuf_mmap_free(&cam->vb_vidq);
/* release sys buffers */
for (i = 0; i < FRAMES; i++) {
cam->buffer.frame[i].lpvbits = NULL;
}
+ v4l2_ctrl_handler_free(&cam->ctrl_handler);
/* release transfer buffer */
kfree(cam->pipe->transfer_buffer);
- cam->pipe->transfer_buffer = NULL;
- mutex_unlock(&cam->open_lock);
kfree(cam);
- cam = NULL;
}
/* release the camera */
-static int zr364xx_release(struct file *file)
+static int zr364xx_close(struct file *file)
{
struct zr364xx_camera *cam;
struct usb_device *udev;
- int i, err;
+ int i;
DBG("%s\n", __func__);
cam = video_drvdata(file);
- if (!cam)
- return -ENODEV;
-
- mutex_lock(&cam->open_lock);
+ mutex_lock(&cam->lock);
udev = cam->udev;
- /* turn off stream */
- if (res_check(cam)) {
+ if (file->private_data == cam->owner) {
+ /* turn off stream */
if (cam->b_acquire)
zr364xx_stop_acquire(cam);
videobuf_streamoff(&cam->vb_vidq);
- res_free(cam);
- }
-
- cam->users--;
- file->private_data = NULL;
- for (i = 0; i < 2; i++) {
- err =
- send_control_msg(udev, 1, init[cam->method][i].value,
- 0, init[cam->method][i].bytes,
- init[cam->method][i].size);
- if (err < 0) {
- dev_err(&udev->dev, "error during release sequence\n");
- goto out;
+ for (i = 0; i < 2; i++) {
+ send_control_msg(udev, 1, init[cam->method][i].value,
+ 0, init[cam->method][i].bytes,
+ init[cam->method][i].size);
}
+ cam->owner = NULL;
}
/* Added some delay here, since opening/closing the camera quickly,
* like Ekiga does during its startup, can crash the webcam
*/
mdelay(100);
- err = 0;
-
-out:
- mutex_unlock(&cam->open_lock);
-
- return err;
+ mutex_unlock(&cam->lock);
+ return v4l2_fh_release(file);
}
{
struct zr364xx_camera *cam = video_drvdata(file);
struct videobuf_queue *q = &cam->vb_vidq;
- _DBG("%s\n", __func__);
+ unsigned res = v4l2_ctrl_poll(file, wait);
- if (cam->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return POLLERR;
+ _DBG("%s\n", __func__);
- return videobuf_poll_stream(file, q, wait);
+ return res | videobuf_poll_stream(file, q, wait);
}
+static const struct v4l2_ctrl_ops zr364xx_ctrl_ops = {
+ .s_ctrl = zr364xx_s_ctrl,
+};
+
static const struct v4l2_file_operations zr364xx_fops = {
.owner = THIS_MODULE,
.open = zr364xx_open,
- .release = zr364xx_release,
+ .release = zr364xx_close,
.read = zr364xx_read,
.mmap = zr364xx_mmap,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
.poll = zr364xx_poll,
};
.vidioc_s_input = zr364xx_vidioc_s_input,
.vidioc_streamon = zr364xx_vidioc_streamon,
.vidioc_streamoff = zr364xx_vidioc_streamoff,
- .vidioc_queryctrl = zr364xx_vidioc_queryctrl,
- .vidioc_g_ctrl = zr364xx_vidioc_g_ctrl,
- .vidioc_s_ctrl = zr364xx_vidioc_s_ctrl,
.vidioc_reqbufs = zr364xx_vidioc_reqbufs,
.vidioc_querybuf = zr364xx_vidioc_querybuf,
.vidioc_qbuf = zr364xx_vidioc_qbuf,
.vidioc_dqbuf = zr364xx_vidioc_dqbuf,
+ .vidioc_log_status = v4l2_ctrl_log_status,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static struct video_device zr364xx_template = {
.name = DRIVER_DESC,
.fops = &zr364xx_fops,
.ioctl_ops = &zr364xx_ioctl_ops,
- .release = video_device_release,
+ .release = video_device_release_empty,
};
struct zr364xx_camera *cam = NULL;
struct usb_host_interface *iface_desc;
struct usb_endpoint_descriptor *endpoint;
+ struct v4l2_ctrl_handler *hdl;
int err;
int i;
dev_err(&udev->dev, "cam: out of memory !\n");
return -ENOMEM;
}
- /* save the init method used by this camera */
- cam->method = id->driver_info;
- cam->vdev = video_device_alloc();
- if (cam->vdev == NULL) {
- dev_err(&udev->dev, "cam->vdev: out of memory !\n");
+ cam->v4l2_dev.release = zr364xx_release;
+ err = v4l2_device_register(&intf->dev, &cam->v4l2_dev);
+ if (err < 0) {
+ dev_err(&udev->dev, "couldn't register v4l2_device\n");
kfree(cam);
- cam = NULL;
- return -ENOMEM;
+ return err;
}
- memcpy(cam->vdev, &zr364xx_template, sizeof(zr364xx_template));
- cam->vdev->parent = &intf->dev;
- video_set_drvdata(cam->vdev, cam);
+ hdl = &cam->ctrl_handler;
+ v4l2_ctrl_handler_init(hdl, 1);
+ v4l2_ctrl_new_std(hdl, &zr364xx_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, 0, 127, 1, 64);
+ if (hdl->error) {
+ err = hdl->error;
+ dev_err(&udev->dev, "couldn't register control\n");
+ goto fail;
+ }
+ /* save the init method used by this camera */
+ cam->method = id->driver_info;
+ mutex_init(&cam->lock);
+ cam->vdev = zr364xx_template;
+ cam->vdev.lock = &cam->lock;
+ cam->vdev.v4l2_dev = &cam->v4l2_dev;
+ cam->vdev.ctrl_handler = &cam->ctrl_handler;
+ set_bit(V4L2_FL_USE_FH_PRIO, &cam->vdev.flags);
+ video_set_drvdata(&cam->vdev, cam);
if (debug)
- cam->vdev->debug = V4L2_DEBUG_IOCTL | V4L2_DEBUG_IOCTL_ARG;
+ cam->vdev.debug = V4L2_DEBUG_IOCTL | V4L2_DEBUG_IOCTL_ARG;
cam->udev = udev;
header2[439] = cam->width / 256;
header2[440] = cam->width % 256;
- cam->users = 0;
cam->nb = 0;
- cam->mode.brightness = 64;
- mutex_init(&cam->lock);
- mutex_init(&cam->open_lock);
DBG("dev: %p, udev %p interface %p\n", cam, cam->udev, intf);
}
if (!cam->read_endpoint) {
+ err = -ENOMEM;
dev_err(&intf->dev, "Could not find bulk-in endpoint\n");
- video_device_release(cam->vdev);
- kfree(cam);
- cam = NULL;
- return -ENOMEM;
+ goto fail;
}
/* v4l */
INIT_LIST_HEAD(&cam->vidq.active);
cam->vidq.cam = cam;
- err = video_register_device(cam->vdev, VFL_TYPE_GRABBER, -1);
- if (err) {
- dev_err(&udev->dev, "video_register_device failed\n");
- video_device_release(cam->vdev);
- kfree(cam);
- cam = NULL;
- return err;
- }
usb_set_intfdata(intf, cam);
/* load zr364xx board specific */
err = zr364xx_board_init(cam);
- if (err) {
- spin_lock_init(&cam->slock);
- return err;
- }
+ if (!err)
+ err = v4l2_ctrl_handler_setup(hdl);
+ if (err)
+ goto fail;
spin_lock_init(&cam->slock);
+ cam->fmt = formats;
+
+ videobuf_queue_vmalloc_init(&cam->vb_vidq, &zr364xx_video_qops,
+ NULL, &cam->slock,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ V4L2_FIELD_NONE,
+ sizeof(struct zr364xx_buffer), cam, &cam->lock);
+
+ err = video_register_device(&cam->vdev, VFL_TYPE_GRABBER, -1);
+ if (err) {
+ dev_err(&udev->dev, "video_register_device failed\n");
+ goto fail;
+ }
+
dev_info(&udev->dev, DRIVER_DESC " controlling device %s\n",
- video_device_node_name(cam->vdev));
+ video_device_node_name(&cam->vdev));
return 0;
+
+fail:
+ v4l2_ctrl_handler_free(hdl);
+ v4l2_device_unregister(&cam->v4l2_dev);
+ kfree(cam);
+ return err;
}
static void zr364xx_disconnect(struct usb_interface *intf)
{
struct zr364xx_camera *cam = usb_get_intfdata(intf);
- videobuf_mmap_free(&cam->vb_vidq);
+
+ mutex_lock(&cam->lock);
usb_set_intfdata(intf, NULL);
dev_info(&intf->dev, DRIVER_DESC " webcam unplugged\n");
- zr364xx_destroy(cam);
+ video_unregister_device(&cam->vdev);
+ v4l2_device_disconnect(&cam->v4l2_dev);
+
+ /* stops the read pipe if it is running */
+ if (cam->b_acquire)
+ zr364xx_stop_acquire(cam);
+
+ zr364xx_stop_readpipe(cam);
+ mutex_unlock(&cam->lock);
+ v4l2_device_put(&cam->v4l2_dev);
}
+#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 */
.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
};
projects / firefly-linux-kernel-4.4.55.git / blobdiff