#define DRIVER_NAME "em28xx"
#define DRIVER_DESC "Empia em28xx based USB video device driver"
-#define EM28XX_VERSION_CODE KERNEL_VERSION(0, 0, 1)
+#define EM28XX_VERSION_CODE KERNEL_VERSION(0, 1, 0)
#define em28xx_videodbg(fmt, arg...) do {\
if (video_debug) \
em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route);
- em28xx_videodbg("Setting input index=%d, vmux=%d, amux=%d\n",index,route.input,dev->ctl_ainput);
-
if (dev->has_msp34xx) {
if (dev->i2s_speed)
em28xx_i2c_call_clients(dev, VIDIOC_INT_I2S_CLOCK_FREQ, &dev->i2s_speed);
}
/*
- * em28xx_v4l2_open()
- * inits the device and starts isoc transfer
+ * em28xx_vm_open()
*/
-static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
+static void em28xx_vm_open(struct vm_area_struct *vma)
{
- int minor = iminor(inode);
- int errCode = 0;
- struct em28xx *h,*dev = NULL;
- struct em28xx_fh *fh;
+ struct em28xx_frame_t *f = vma->vm_private_data;
+ f->vma_use_count++;
+}
- list_for_each_entry(h, &em28xx_devlist, devlist) {
- if (h->vdev->minor == minor) {
- dev = h;
- dev->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- }
- if (h->vbi_dev->minor == minor) {
- dev = h;
- dev->type = V4L2_BUF_TYPE_VBI_CAPTURE;
- }
- }
- if (NULL == dev)
- return -ENODEV;
+/*
+ * em28xx_vm_close()
+ */
+static void em28xx_vm_close(struct vm_area_struct *vma)
+{
+ /* NOTE: buffers are not freed here */
+ struct em28xx_frame_t *f = vma->vm_private_data;
- em28xx_videodbg("open minor=%d type=%s users=%d\n",
- minor,v4l2_type_names[dev->type],dev->users);
+ if (f->vma_use_count)
+ f->vma_use_count--;
+}
- fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
+static struct vm_operations_struct em28xx_vm_ops = {
+ .open = em28xx_vm_open,
+ .close = em28xx_vm_close,
+};
- if (!fh) {
- em28xx_errdev("em28xx-video.c: Out of memory?!\n");
- return -ENOMEM;
+
+/*
+ * em28xx_get_ctrl()
+ * return the current saturation, brightness or contrast, mute state
+ */
+static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
+{
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ ctrl->value = dev->mute;
+ return 0;
+ case V4L2_CID_AUDIO_VOLUME:
+ ctrl->value = dev->volume;
+ return 0;
+ default:
+ return -EINVAL;
}
- mutex_lock(&dev->lock);
- fh->dev = dev;
- filp->private_data = fh;
+}
- if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
- em28xx_set_alternate(dev);
+/*
+ * em28xx_set_ctrl()
+ * mute or set new saturation, brightness or contrast
+ */
+static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
+{
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ if (ctrl->value != dev->mute) {
+ dev->mute = ctrl->value;
+ em28xx_audio_usb_mute(dev, ctrl->value);
+ return em28xx_audio_analog_set(dev);
+ }
+ return 0;
+ case V4L2_CID_AUDIO_VOLUME:
+ dev->volume = ctrl->value;
+ return em28xx_audio_analog_set(dev);
+ default:
+ return -EINVAL;
+ }
+}
- dev->width = norm_maxw(dev);
- dev->height = norm_maxh(dev);
- dev->frame_size = dev->width * dev->height * 2;
- dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
- dev->bytesperline = dev->width * 2;
- dev->hscale = 0;
- dev->vscale = 0;
+/*
+ * em28xx_stream_interrupt()
+ * stops streaming
+ */
+static int em28xx_stream_interrupt(struct em28xx *dev)
+{
+ int rc = 0;
- em28xx_capture_start(dev, 1);
- em28xx_resolution_set(dev);
+ /* stop reading from the device */
+ dev->stream = STREAM_INTERRUPT;
+ rc = wait_event_timeout(dev->wait_stream,
+ (dev->stream == STREAM_OFF) ||
+ (dev->state & DEV_DISCONNECTED),
+ EM28XX_URB_TIMEOUT);
- /* start the transfer */
- errCode = em28xx_init_isoc(dev);
- if (errCode)
- goto err;
+ if (rc) {
+ dev->state |= DEV_MISCONFIGURED;
+ em28xx_videodbg("device is misconfigured; close and "
+ "open /dev/video%d again\n",
+ dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN);
+ return rc;
+ }
- em28xx_empty_framequeues(dev);
+ return 0;
+}
+
+
+static int check_dev(struct em28xx *dev)
+{
+ if (dev->state & DEV_DISCONNECTED) {
+ em28xx_errdev("v4l2 ioctl: device not present\n");
+ return -ENODEV;
}
- dev->users++;
+ if (dev->state & DEV_MISCONFIGURED) {
+ em28xx_errdev("v4l2 ioctl: device is misconfigured; "
+ "close and open it again\n");
+ return -EIO;
+ }
+ return 0;
+}
-err:
- mutex_unlock(&dev->lock);
- return errCode;
+static void get_scale(struct em28xx *dev,
+ unsigned int width, unsigned int height,
+ unsigned int *hscale, unsigned int *vscale)
+{
+ unsigned int maxw = norm_maxw(dev);
+ unsigned int maxh = norm_maxh(dev);
+
+ *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
+ if (*hscale >= 0x4000)
+ *hscale = 0x3fff;
+
+ *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
+ if (*vscale >= 0x4000)
+ *vscale = 0x3fff;
}
-/*
- * em28xx_realease_resources()
- * unregisters the v4l2,i2c and usb devices
- * called when the device gets disconected or at module unload
-*/
-static void em28xx_release_resources(struct em28xx *dev)
+/* ------------------------------------------------------------------
+ IOCTL vidioc handling
+ ------------------------------------------------------------------*/
+
+static int vidioc_g_fmt_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
- /*FIXME: I2C IR should be disconnected */
+ mutex_lock(&dev->lock);
- em28xx_info("V4L2 devices /dev/video%d and /dev/vbi%d deregistered\n",
- dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN,
- dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN);
- list_del(&dev->devlist);
- video_unregister_device(dev->vdev);
- video_unregister_device(dev->vbi_dev);
- em28xx_i2c_unregister(dev);
- usb_put_dev(dev->udev);
+ f->fmt.pix.width = dev->width;
+ f->fmt.pix.height = dev->height;
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
+ f->fmt.pix.bytesperline = dev->bytesperline;
+ f->fmt.pix.sizeimage = dev->frame_size;
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+ /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
+ f->fmt.pix.field = dev->interlaced ?
+ V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
- /* Mark device as unused */
- em28xx_devused&=~(1<<dev->devno);
+ mutex_unlock(&dev->lock);
+ return 0;
}
-/*
- * em28xx_v4l2_close()
- * stops streaming and deallocates all resources allocated by the v4l2 calls and ioctls
- */
-static int em28xx_v4l2_close(struct inode *inode, struct file *filp)
+static int vidioc_try_fmt_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
{
- struct em28xx_fh *fh = filp->private_data;
- struct em28xx *dev = fh->dev;
- int errCode;
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int width = f->fmt.pix.width;
+ int height = f->fmt.pix.height;
+ unsigned int maxw = norm_maxw(dev);
+ unsigned int maxh = norm_maxh(dev);
+ unsigned int hscale, vscale;
+
+ /* width must even because of the YUYV format
+ height must be even because of interlacing */
+ height &= 0xfffe;
+ width &= 0xfffe;
- em28xx_videodbg("users=%d\n", dev->users);
+ if (height < 32)
+ height = 32;
+ if (height > maxh)
+ height = maxh;
+ if (width < 48)
+ width = 48;
+ if (width > maxw)
+ width = maxw;
+ mutex_lock(&dev->lock);
- if (res_check(fh))
- res_free(fh);
+ if (dev->is_em2800) {
+ /* the em2800 can only scale down to 50% */
+ if (height % (maxh / 2))
+ height = maxh;
+ if (width % (maxw / 2))
+ width = maxw;
+ /* according to empiatech support */
+ /* the MaxPacketSize is to small to support */
+ /* framesizes larger than 640x480 @ 30 fps */
+ /* or 640x576 @ 25 fps. As this would cut */
+ /* of a part of the image we prefer */
+ /* 360x576 or 360x480 for now */
+ if (width == maxw && height == maxh)
+ width /= 2;
+ }
- mutex_lock(&dev->lock);
+ get_scale(dev, width, height, &hscale, &vscale);
- if (dev->users == 1) {
- em28xx_uninit_isoc(dev);
- em28xx_release_buffers(dev);
- dev->io = IO_NONE;
+ width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
+ height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
- /* the device is already disconnect,
- free the remaining resources */
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_release_resources(dev);
- mutex_unlock(&dev->lock);
- kfree(dev);
- return 0;
- }
+ f->fmt.pix.width = width;
+ f->fmt.pix.height = height;
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
+ f->fmt.pix.bytesperline = width * 2;
+ f->fmt.pix.sizeimage = width * 2 * height;
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+ f->fmt.pix.field = V4L2_FIELD_INTERLACED;
- /* set alternate 0 */
- dev->alt = 0;
- em28xx_videodbg("setting alternate 0\n");
- errCode = usb_set_interface(dev->udev, 0, 0);
- if (errCode < 0) {
- em28xx_errdev("cannot change alternate number to "
- "0 (error=%i)\n", errCode);
- }
- }
- kfree(fh);
- dev->users--;
- wake_up_interruptible_nr(&dev->open, 1);
mutex_unlock(&dev->lock);
return 0;
}
-/*
- * em28xx_v4l2_read()
- * will allocate buffers when called for the first time
- */
-static ssize_t
-em28xx_v4l2_read(struct file *filp, char __user * buf, size_t count,
- loff_t * f_pos)
+static int vidioc_s_fmt_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
{
- struct em28xx_frame_t *f, *i;
- unsigned long lock_flags;
- int ret = 0;
- struct em28xx_fh *fh = filp->private_data;
- struct em28xx *dev = fh->dev;
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc, i;
- /* FIXME: read() is not prepared to allow changing the video
- resolution while streaming. Seems a bug at em28xx_set_fmt
- */
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
- if (unlikely(res_get(fh) < 0))
- return -EBUSY;
+ vidioc_try_fmt_cap(file, priv, f);
mutex_lock(&dev->lock);
- if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
- em28xx_videodbg("V4l2_Buf_type_videocapture is set\n");
-
- if (dev->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
- em28xx_videodbg("V4L2_BUF_TYPE_VBI_CAPTURE is set\n");
- em28xx_videodbg("not supported yet! ...\n");
- if (copy_to_user(buf, "", 1)) {
- mutex_unlock(&dev->lock);
- return -EFAULT;
+ for (i = 0; i < dev->num_frames; i++)
+ if (dev->frame[i].vma_use_count) {
+ em28xx_videodbg("VIDIOC_S_FMT failed. "
+ "Unmap the buffers first.\n");
+ rc = -EINVAL;
+ goto err;
}
- mutex_unlock(&dev->lock);
- return (1);
- }
- if (dev->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) {
- em28xx_videodbg("V4L2_BUF_TYPE_SLICED_VBI_CAPTURE is set\n");
- em28xx_videodbg("not supported yet! ...\n");
- if (copy_to_user(buf, "", 1)) {
- mutex_unlock(&dev->lock);
- return -EFAULT;
- }
- mutex_unlock(&dev->lock);
- return (1);
+
+ /* stop io in case it is already in progress */
+ if (dev->stream == STREAM_ON) {
+ em28xx_videodbg("VIDIOC_SET_FMT: interrupting stream\n");
+ rc = em28xx_stream_interrupt(dev);
+ if (rc < 0)
+ goto err;
}
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_videodbg("device not present\n");
- mutex_unlock(&dev->lock);
- return -ENODEV;
- }
+ em28xx_release_buffers(dev);
+ dev->io = IO_NONE;
- if (dev->state & DEV_MISCONFIGURED) {
- em28xx_videodbg("device misconfigured; close and open it again\n");
- mutex_unlock(&dev->lock);
- return -EIO;
- }
+ /* set new image size */
+ dev->width = f->fmt.pix.width;
+ dev->height = f->fmt.pix.height;
+ dev->frame_size = dev->width * dev->height * 2;
+ dev->field_size = dev->frame_size >> 1;
+ dev->bytesperline = dev->width * 2;
+ get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
- if (dev->io == IO_MMAP) {
- em28xx_videodbg ("IO method is set to mmap; close and open"
- " the device again to choose the read method\n");
- mutex_unlock(&dev->lock);
+ /* FIXME: This is really weird! Why capture is starting with
+ this ioctl ???
+ */
+ em28xx_uninit_isoc(dev);
+ em28xx_set_alternate(dev);
+ em28xx_capture_start(dev, 1);
+ em28xx_resolution_set(dev);
+ em28xx_init_isoc(dev);
+ rc = 0;
+
+err:
+ mutex_unlock(&dev->lock);
+ return rc;
+}
+
+static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ struct v4l2_format f;
+ unsigned int i;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ for (i = 0; i < TVNORMS; i++)
+ if (*norm == tvnorms[i].id)
+ break;
+ if (i == TVNORMS)
+ for (i = 0; i < TVNORMS; i++)
+ if (*norm & tvnorms[i].id)
+ break;
+ if (i == TVNORMS)
return -EINVAL;
- }
- if (dev->io == IO_NONE) {
- if (!em28xx_request_buffers(dev, EM28XX_NUM_READ_FRAMES)) {
- em28xx_errdev("read failed, not enough memory\n");
- mutex_unlock(&dev->lock);
- return -ENOMEM;
- }
- dev->io = IO_READ;
- dev->stream = STREAM_ON;
- em28xx_queue_unusedframes(dev);
- }
+ *norm = tvnorms[i].id;
- if (!count) {
- mutex_unlock(&dev->lock);
- return 0;
- }
+ mutex_lock(&dev->lock);
+ dev->tvnorm = &tvnorms[i];
+ mutex_unlock(&dev->lock);
- if (list_empty(&dev->outqueue)) {
- if (filp->f_flags & O_NONBLOCK) {
- mutex_unlock(&dev->lock);
- return -EAGAIN;
- }
- ret = wait_event_interruptible
- (dev->wait_frame,
- (!list_empty(&dev->outqueue)) ||
- (dev->state & DEV_DISCONNECTED));
- if (ret) {
- mutex_unlock(&dev->lock);
- return ret;
- }
- if (dev->state & DEV_DISCONNECTED) {
- mutex_unlock(&dev->lock);
- return -ENODEV;
- }
- dev->video_bytesread = 0;
- }
+ /* Adjusts width/height, if needed */
+ f.fmt.pix.width = dev->width;
+ f.fmt.pix.height = dev->height;
+ vidioc_try_fmt_cap(file, priv, &f);
- f = list_entry(dev->outqueue.prev, struct em28xx_frame_t, frame);
+ mutex_lock(&dev->lock);
- em28xx_queue_unusedframes(dev);
+ /* set new image size */
+ dev->width = f.fmt.pix.width;
+ dev->height = f.fmt.pix.height;
+ dev->frame_size = dev->width * dev->height * 2;
+ dev->field_size = dev->frame_size >> 1;
+ dev->bytesperline = dev->width * 2;
+ get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
- if (count > f->buf.length)
- count = f->buf.length;
+ em28xx_resolution_set(dev);
+ em28xx_i2c_call_clients(dev, VIDIOC_S_STD, &dev->tvnorm->id);
- if ((dev->video_bytesread + count) > dev->frame_size)
- count = dev->frame_size - dev->video_bytesread;
+ mutex_unlock(&dev->lock);
+ return 0;
+}
- if (copy_to_user(buf, f->bufmem+dev->video_bytesread, count)) {
- em28xx_err("Error while copying to user\n");
- return -EFAULT;
- }
- dev->video_bytesread += count;
+static const char *iname[] = {
+ [EM28XX_VMUX_COMPOSITE1] = "Composite1",
+ [EM28XX_VMUX_COMPOSITE2] = "Composite2",
+ [EM28XX_VMUX_COMPOSITE3] = "Composite3",
+ [EM28XX_VMUX_COMPOSITE4] = "Composite4",
+ [EM28XX_VMUX_SVIDEO] = "S-Video",
+ [EM28XX_VMUX_TELEVISION] = "Television",
+ [EM28XX_VMUX_CABLE] = "Cable TV",
+ [EM28XX_VMUX_DVB] = "DVB",
+ [EM28XX_VMUX_DEBUG] = "for debug only",
+};
- if (dev->video_bytesread == dev->frame_size) {
- spin_lock_irqsave(&dev->queue_lock, lock_flags);
- list_for_each_entry(i, &dev->outqueue, frame)
- i->state = F_UNUSED;
- INIT_LIST_HEAD(&dev->outqueue);
- spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
+static int vidioc_enum_input(struct file *file, void *priv,
+ struct v4l2_input *i)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ unsigned int n;
- em28xx_queue_unusedframes(dev);
- dev->video_bytesread = 0;
- }
+ n = i->index;
+ if (n >= MAX_EM28XX_INPUT)
+ return -EINVAL;
+ if (0 == INPUT(n)->type)
+ return -EINVAL;
- *f_pos += count;
+ i->index = n;
+ i->type = V4L2_INPUT_TYPE_CAMERA;
- mutex_unlock(&dev->lock);
+ strcpy(i->name, iname[INPUT(n)->type]);
- return count;
+ if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
+ (EM28XX_VMUX_CABLE == INPUT(n)->type))
+ i->type = V4L2_INPUT_TYPE_TUNER;
+
+ for (n = 0; n < ARRAY_SIZE(tvnorms); n++)
+ i->std |= tvnorms[n].id;
+
+ return 0;
}
-/*
- * em28xx_v4l2_poll()
- * will allocate buffers when called for the first time
- */
-static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait)
+static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
{
- unsigned int mask = 0;
- struct em28xx_fh *fh = filp->private_data;
- struct em28xx *dev = fh->dev;
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
- if (unlikely(res_get(fh) < 0))
- return POLLERR;
+ *i = dev->ctl_input;
+
+ return 0;
+}
+
+static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ if (i >= MAX_EM28XX_INPUT)
+ return -EINVAL;
+ if (0 == INPUT(i)->type)
+ return -EINVAL;
mutex_lock(&dev->lock);
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_videodbg("device not present\n");
- } else if (dev->state & DEV_MISCONFIGURED) {
- em28xx_videodbg("device is misconfigured; close and open it again\n");
- } else {
- if (dev->io == IO_NONE) {
- if (!em28xx_request_buffers
- (dev, EM28XX_NUM_READ_FRAMES)) {
- em28xx_warn
- ("poll() failed, not enough memory\n");
- } else {
- dev->io = IO_READ;
- dev->stream = STREAM_ON;
- }
- }
+ video_mux(dev, i);
- if (dev->io == IO_READ) {
- em28xx_queue_unusedframes(dev);
- poll_wait(filp, &dev->wait_frame, wait);
+ mutex_unlock(&dev->lock);
+ return 0;
+}
- if (!list_empty(&dev->outqueue))
- mask |= POLLIN | POLLRDNORM;
+static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ unsigned int index = a->index;
- mutex_unlock(&dev->lock);
+ if (a->index > 1)
+ return -EINVAL;
- return mask;
- }
+ index = dev->ctl_ainput;
+
+ if (index == 0) {
+ strcpy(a->name, "Television");
+ } else {
+ strcpy(a->name, "Line In");
}
+ a->capability = V4L2_AUDCAP_STEREO;
+ a->index = index;
- mutex_unlock(&dev->lock);
- return POLLERR;
+ return 0;
}
-/*
- * em28xx_vm_open()
- */
-static void em28xx_vm_open(struct vm_area_struct *vma)
+static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
{
- struct em28xx_frame_t *f = vma->vm_private_data;
- f->vma_use_count++;
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+
+ if (a->index != dev->ctl_ainput)
+ return -EINVAL;
+
+ return 0;
}
-/*
- * em28xx_vm_close()
- */
-static void em28xx_vm_close(struct vm_area_struct *vma)
+static int vidioc_queryctrl(struct file *file, void *priv,
+ struct v4l2_queryctrl *qc)
{
- /* NOTE: buffers are not freed here */
- struct em28xx_frame_t *f = vma->vm_private_data;
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int id = qc->id;
+ int i;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
- if (f->vma_use_count)
- f->vma_use_count--;
+ memset(qc, 0, sizeof(*qc));
+
+ qc->id = id;
+
+ if (!dev->has_msp34xx) {
+ for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
+ if (qc->id && qc->id == em28xx_qctrl[i].id) {
+ memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
+ return 0;
+ }
+ }
+ }
+ mutex_lock(&dev->lock);
+ em28xx_i2c_call_clients(dev, VIDIOC_QUERYCTRL, qc);
+ mutex_unlock(&dev->lock);
+
+ if (qc->type)
+ return 0;
+ else
+ return -EINVAL;
}
-static struct vm_operations_struct em28xx_vm_ops = {
- .open = em28xx_vm_open,
- .close = em28xx_vm_close,
-};
+static int vidioc_g_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
-/*
- * em28xx_v4l2_mmap()
- */
-static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+ mutex_lock(&dev->lock);
+
+ if (!dev->has_msp34xx)
+ rc = em28xx_get_ctrl(dev, ctrl);
+ else
+ rc = -EINVAL;
+
+ if (rc == -EINVAL) {
+ em28xx_i2c_call_clients(dev, VIDIOC_G_CTRL, ctrl);
+ rc = 0;
+ }
+
+ mutex_unlock(&dev->lock);
+ return rc;
+}
+
+static int vidioc_s_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
{
- struct em28xx_fh *fh = filp->private_data;
- struct em28xx *dev = fh->dev;
- unsigned long size = vma->vm_end - vma->vm_start;
- unsigned long start = vma->vm_start;
- void *pos;
- u32 i;
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ u8 i;
+ int rc;
- if (unlikely(res_get(fh) < 0))
- return -EBUSY;
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
mutex_lock(&dev->lock);
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_videodbg("mmap: device not present\n");
- mutex_unlock(&dev->lock);
- return -ENODEV;
+ if (dev->has_msp34xx)
+ em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl);
+ else {
+ rc = 1;
+ for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
+ if (ctrl->id == em28xx_qctrl[i].id) {
+ if (ctrl->value < em28xx_qctrl[i].minimum ||
+ ctrl->value > em28xx_qctrl[i].maximum) {
+ rc = -ERANGE;
+ break;
+ }
+
+ rc = em28xx_set_ctrl(dev, ctrl);
+ break;
+ }
+ }
}
- if (dev->state & DEV_MISCONFIGURED) {
- em28xx_videodbg ("mmap: Device is misconfigured; close and "
- "open it again\n");
- mutex_unlock(&dev->lock);
- return -EIO;
+ /* Control not found - try to send it to the attached devices */
+ if (rc == 1) {
+ em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl);
+ rc = 0;
}
- if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) ||
- size != PAGE_ALIGN(dev->frame[0].buf.length)) {
- mutex_unlock(&dev->lock);
+ mutex_unlock(&dev->lock);
+ return rc;
+}
+
+static int vidioc_g_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *t)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ if (0 != t->index)
return -EINVAL;
- }
- for (i = 0; i < dev->num_frames; i++) {
- if ((dev->frame[i].buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff)
- break;
- }
- if (i == dev->num_frames) {
- em28xx_videodbg("mmap: user supplied mapping address is out of range\n");
- mutex_unlock(&dev->lock);
+ strcpy(t->name, "Tuner");
+
+ mutex_lock(&dev->lock);
+
+ em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t);
+
+ mutex_unlock(&dev->lock);
+ return 0;
+}
+
+static int vidioc_s_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *t)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ if (0 != t->index)
return -EINVAL;
- }
- /* VM_IO is eventually going to replace PageReserved altogether */
- vma->vm_flags |= VM_IO;
- vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
+ mutex_lock(&dev->lock);
- pos = dev->frame[i].bufmem;
- while (size > 0) { /* size is page-aligned */
- if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
- em28xx_videodbg("mmap: vm_insert_page failed\n");
- mutex_unlock(&dev->lock);
- return -EAGAIN;
- }
- start += PAGE_SIZE;
- pos += PAGE_SIZE;
- size -= PAGE_SIZE;
- }
+ em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t);
- vma->vm_ops = &em28xx_vm_ops;
- vma->vm_private_data = &dev->frame[i];
+ mutex_unlock(&dev->lock);
+ return 0;
+}
+
+static int vidioc_g_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *f)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+
+ f->type = V4L2_TUNER_ANALOG_TV;
+ f->frequency = dev->ctl_freq;
+
+ return 0;
+}
+
+static int vidioc_s_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *f)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ if (0 != f->tuner)
+ return -EINVAL;
+
+ if (V4L2_TUNER_ANALOG_TV != f->type)
+ return -EINVAL;
+
+ mutex_lock(&dev->lock);
+
+ dev->ctl_freq = f->frequency;
+ em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f);
- em28xx_vm_open(vma);
mutex_unlock(&dev->lock);
return 0;
}
-/*
- * em28xx_get_ctrl()
- * return the current saturation, brightness or contrast, mute state
- */
-static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
+static int vidioc_cropcap(struct file *file, void *priv,
+ struct v4l2_cropcap *cc)
{
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- ctrl->value = dev->mute;
- return 0;
- case V4L2_CID_AUDIO_VOLUME:
- ctrl->value = dev->volume;
- return 0;
- default:
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+
+ if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
- }
+
+ cc->bounds.left = 0;
+ cc->bounds.top = 0;
+ cc->bounds.width = dev->width;
+ cc->bounds.height = dev->height;
+ cc->defrect = cc->bounds;
+ cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
+ cc->pixelaspect.denominator = 59;
+
+ return 0;
}
-/*
- * em28xx_set_ctrl()
- * mute or set new saturation, brightness or contrast
- */
-static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
+static int vidioc_streamon(struct file *file, void *priv,
+ enum v4l2_buf_type type)
{
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- if (ctrl->value != dev->mute) {
- dev->mute = ctrl->value;
- em28xx_audio_usb_mute(dev, ctrl->value);
- return em28xx_audio_analog_set(dev);
- }
- return 0;
- case V4L2_CID_AUDIO_VOLUME:
- dev->volume = ctrl->value;
- return em28xx_audio_analog_set(dev);
- default:
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP)
+ return -EINVAL;
+
+ if (list_empty(&dev->inqueue))
return -EINVAL;
+
+ mutex_lock(&dev->lock);
+
+ if (unlikely(res_get(fh) < 0)) {
+ mutex_unlock(&dev->lock);
+ return -EBUSY;
}
+
+ dev->stream = STREAM_ON; /* FIXME: Start video capture here? */
+
+ mutex_unlock(&dev->lock);
+ return 0;
}
-/*
- * em28xx_stream_interrupt()
- * stops streaming
- */
-static int em28xx_stream_interrupt(struct em28xx *dev)
+static int vidioc_streamoff(struct file *file, void *priv,
+ enum v4l2_buf_type type)
{
- int ret = 0;
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
- /* stop reading from the device */
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
- dev->stream = STREAM_INTERRUPT;
- ret = wait_event_timeout(dev->wait_stream,
- (dev->stream == STREAM_OFF) ||
- (dev->state & DEV_DISCONNECTED),
- EM28XX_URB_TIMEOUT);
- if (dev->state & DEV_DISCONNECTED)
- return -ENODEV;
- else if (ret) {
- dev->state |= DEV_MISCONFIGURED;
- em28xx_videodbg("device is misconfigured; close and "
- "open /dev/video%d again\n",
- dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN);
- return ret;
+ if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP)
+ return -EINVAL;
+
+ mutex_lock(&dev->lock);
+
+ if (dev->stream == STREAM_ON) {
+ em28xx_videodbg("VIDIOC_STREAMOFF: interrupting stream\n");
+ rc = em28xx_stream_interrupt(dev);
+ if (rc < 0) {
+ mutex_unlock(&dev->lock);
+ return rc;
+ }
}
+ em28xx_empty_framequeues(dev);
+
+ mutex_unlock(&dev->lock);
return 0;
}
-static int em28xx_set_norm(struct em28xx *dev, int width, int height)
+static int vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
{
- unsigned int hscale, vscale;
- unsigned int maxh, maxw;
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
- maxw = norm_maxw(dev);
- maxh = norm_maxh(dev);
+ strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
+ strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
+ strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info));
- /* width must even because of the YUYV format */
- /* height must be even because of interlacing */
- height &= 0xfffe;
- width &= 0xfffe;
+ cap->version = EM28XX_VERSION_CODE;
- if (height < 32)
- height = 32;
- if (height > maxh)
- height = maxh;
- if (width < 48)
- width = 48;
- if (width > maxw)
- width = maxw;
+ cap->capabilities =
+ V4L2_CAP_SLICED_VBI_CAPTURE |
+ V4L2_CAP_VIDEO_CAPTURE |
+ V4L2_CAP_AUDIO |
+ V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
- if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000)
- hscale = 0x3fff;
- width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
+ if (dev->has_tuner)
+ cap->capabilities |= V4L2_CAP_TUNER;
- if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000)
- vscale = 0x3fff;
- height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
+ return 0;
+}
- /* set new image size */
- dev->width = width;
- dev->height = height;
- dev->frame_size = dev->width * dev->height * 2;
- dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
- dev->bytesperline = dev->width * 2;
- dev->hscale = hscale;
- dev->vscale = vscale;
+static int vidioc_enum_fmt_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *fmtd)
+{
+ if (fmtd->index != 0)
+ return -EINVAL;
- em28xx_resolution_set(dev);
+ fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ strcpy(fmtd->description, "Packed YUY2");
+ fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
+ memset(fmtd->reserved, 0, sizeof(fmtd->reserved));
return 0;
}
-static int em28xx_get_fmt(struct em28xx *dev, struct v4l2_format *format)
+/* Sliced VBI ioctls */
+static int vidioc_g_fmt_vbi_capture(struct file *file, void *priv,
+ struct v4l2_format *f)
{
- em28xx_videodbg("VIDIOC_G_FMT: type=%s\n",
- (format->type ==V4L2_BUF_TYPE_VIDEO_CAPTURE) ?
- "V4L2_BUF_TYPE_VIDEO_CAPTURE" :
- (format->type ==V4L2_BUF_TYPE_VBI_CAPTURE) ?
- "V4L2_BUF_TYPE_VBI_CAPTURE" :
- (format->type ==V4L2_CAP_SLICED_VBI_CAPTURE) ?
- "V4L2_BUF_TYPE_SLICED_VBI_CAPTURE " :
- "not supported");
-
- switch (format->type) {
- case V4L2_BUF_TYPE_VIDEO_CAPTURE:
- {
- format->fmt.pix.width = dev->width;
- format->fmt.pix.height = dev->height;
- format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
- format->fmt.pix.bytesperline = dev->bytesperline;
- format->fmt.pix.sizeimage = dev->frame_size;
- format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
- format->fmt.pix.field = dev->interlaced ? V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
-
- em28xx_videodbg("VIDIOC_G_FMT: %dx%d\n", dev->width,
- dev->height);
- break;
- }
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
- case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
- {
- format->fmt.sliced.service_set=0;
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
- em28xx_i2c_call_clients(dev,VIDIOC_G_FMT,format);
+ mutex_lock(&dev->lock);
- if (format->fmt.sliced.service_set==0)
- return -EINVAL;
+ f->fmt.sliced.service_set = 0;
- break;
- }
+ em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f);
- default:
+ if (f->fmt.sliced.service_set == 0)
+ rc = -EINVAL;
+
+ mutex_unlock(&dev->lock);
+ return rc;
+}
+
+static int vidioc_try_set_vbi_capture(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ mutex_lock(&dev->lock);
+ em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f);
+ mutex_unlock(&dev->lock);
+
+ if (f->fmt.sliced.service_set == 0)
return -EINVAL;
- }
- return (0);
+
+ return 0;
}
-static int em28xx_set_fmt(struct em28xx *dev, unsigned int cmd, struct v4l2_format *format)
+
+static int vidioc_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *rb)
{
- u32 i;
- int ret = 0;
- int width = format->fmt.pix.width;
- int height = format->fmt.pix.height;
- unsigned int hscale, vscale;
- unsigned int maxh, maxw;
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ u32 i;
+ int rc;
- maxw = norm_maxw(dev);
- maxh = norm_maxh(dev);
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
- em28xx_videodbg("%s: type=%s\n",
- cmd == VIDIOC_TRY_FMT ?
- "VIDIOC_TRY_FMT" : "VIDIOC_S_FMT",
- format->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ?
- "V4L2_BUF_TYPE_VIDEO_CAPTURE" :
- format->type == V4L2_BUF_TYPE_VBI_CAPTURE ?
- "V4L2_BUF_TYPE_VBI_CAPTURE " :
- "not supported");
+ if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
+ rb->memory != V4L2_MEMORY_MMAP)
+ return -EINVAL;
- if (format->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) {
- em28xx_i2c_call_clients(dev,VIDIOC_G_FMT,format);
+ if (dev->io == IO_READ) {
+ em28xx_videodbg("method is set to read;"
+ " close and open the device again to"
+ " choose the mmap I/O method\n");
+ return -EINVAL;
+ }
- if (format->fmt.sliced.service_set==0)
+ for (i = 0; i < dev->num_frames; i++)
+ if (dev->frame[i].vma_use_count) {
+ em28xx_videodbg("VIDIOC_REQBUFS failed; "
+ "previous buffers are still mapped\n");
return -EINVAL;
+ }
- return 0;
+ mutex_lock(&dev->lock);
+
+ if (dev->stream == STREAM_ON) {
+ em28xx_videodbg("VIDIOC_REQBUFS: interrupting stream\n");
+ rc = em28xx_stream_interrupt(dev);
+ if (rc < 0) {
+ mutex_unlock(&dev->lock);
+ return rc;
+ }
}
+ em28xx_empty_framequeues(dev);
+
+ em28xx_release_buffers(dev);
+ if (rb->count)
+ rb->count = em28xx_request_buffers(dev, rb->count);
+
+ dev->frame_current = NULL;
+ dev->io = rb->count ? IO_MMAP : IO_NONE;
+
+ mutex_unlock(&dev->lock);
+ return 0;
+}
- if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+static int vidioc_querybuf(struct file *file, void *priv,
+ struct v4l2_buffer *b)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
+
+ if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
+ b->index >= dev->num_frames || dev->io != IO_MMAP)
return -EINVAL;
- em28xx_videodbg("%s: requested %dx%d\n",
- cmd == VIDIOC_TRY_FMT ?
- "VIDIOC_TRY_FMT" : "VIDIOC_S_FMT",
- format->fmt.pix.width, format->fmt.pix.height);
+ mutex_lock(&dev->lock);
- /* FIXME: Move some code away from here */
- /* width must even because of the YUYV format */
- /* height must be even because of interlacing */
- height &= 0xfffe;
- width &= 0xfffe;
+ memcpy(b, &dev->frame[b->index].buf, sizeof(*b));
- if (height < 32)
- height = 32;
- if (height > maxh)
- height = maxh;
- if (width < 48)
- width = 48;
- if (width > maxw)
- width = maxw;
+ if (dev->frame[b->index].vma_use_count)
+ b->flags |= V4L2_BUF_FLAG_MAPPED;
+
+ if (dev->frame[b->index].state == F_DONE)
+ b->flags |= V4L2_BUF_FLAG_DONE;
+ else if (dev->frame[b->index].state != F_UNUSED)
+ b->flags |= V4L2_BUF_FLAG_QUEUED;
+
+ mutex_unlock(&dev->lock);
+ return 0;
+}
+
+static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ unsigned long lock_flags;
+ int rc;
- if(dev->is_em2800){
- /* the em2800 can only scale down to 50% */
- if(height % (maxh / 2))
- height=maxh;
- if(width % (maxw / 2))
- width=maxw;
- /* according to empiatech support */
- /* the MaxPacketSize is to small to support */
- /* framesizes larger than 640x480 @ 30 fps */
- /* or 640x576 @ 25 fps. As this would cut */
- /* of a part of the image we prefer */
- /* 360x576 or 360x480 for now */
- if(width == maxw && height == maxh)
- width /= 2;
- }
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
- if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000)
- hscale = 0x3fff;
+ if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP ||
+ b->index >= dev->num_frames)
+ return -EINVAL;
- width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
+ if (dev->frame[b->index].state != F_UNUSED)
+ return -EAGAIN;
- if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000)
- vscale = 0x3fff;
+ dev->frame[b->index].state = F_QUEUED;
- height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
+ /* add frame to fifo */
+ spin_lock_irqsave(&dev->queue_lock, lock_flags);
+ list_add_tail(&dev->frame[b->index].frame, &dev->inqueue);
+ spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
- format->fmt.pix.width = width;
- format->fmt.pix.height = height;
- format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
- format->fmt.pix.bytesperline = width * 2;
- format->fmt.pix.sizeimage = width * 2 * height;
- format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
- format->fmt.pix.field = V4L2_FIELD_INTERLACED;
+ return 0;
+}
- em28xx_videodbg("%s: returned %dx%d (%d, %d)\n",
- cmd == VIDIOC_TRY_FMT ?
- "VIDIOC_TRY_FMT" :"VIDIOC_S_FMT",
- format->fmt.pix.width, format->fmt.pix.height, hscale, vscale);
+static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
+{
+ struct em28xx_fh *fh = priv;
+ struct em28xx *dev = fh->dev;
+ int rc;
+ struct em28xx_frame_t *f;
+ unsigned long lock_flags;
+
+ rc = check_dev(dev);
+ if (rc < 0)
+ return rc;
- if (cmd == VIDIOC_TRY_FMT)
- return 0;
+ if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP)
+ return -EINVAL;
- for (i = 0; i < dev->num_frames; i++)
- if (dev->frame[i].vma_use_count) {
- em28xx_videodbg("VIDIOC_S_FMT failed. "
- "Unmap the buffers first.\n");
+ if (list_empty(&dev->outqueue)) {
+ if (dev->stream == STREAM_OFF)
return -EINVAL;
- }
- /* stop io in case it is already in progress */
- if (dev->stream == STREAM_ON) {
- em28xx_videodbg("VIDIOC_SET_FMT: interrupting stream\n");
- if ((ret = em28xx_stream_interrupt(dev)))
- return ret;
+ if (file->f_flags & O_NONBLOCK)
+ return -EAGAIN;
+
+ rc = wait_event_interruptible(dev->wait_frame,
+ (!list_empty(&dev->outqueue)) ||
+ (dev->state & DEV_DISCONNECTED));
+ if (rc)
+ return rc;
+
+ if (dev->state & DEV_DISCONNECTED)
+ return -ENODEV;
}
- em28xx_release_buffers(dev);
- dev->io = IO_NONE;
+ spin_lock_irqsave(&dev->queue_lock, lock_flags);
+ f = list_entry(dev->outqueue.next, struct em28xx_frame_t, frame);
+ list_del(dev->outqueue.next);
+ spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
- /* set new image size */
- dev->width = width;
- dev->height = height;
- dev->frame_size = dev->width * dev->height * 2;
- dev->field_size = dev->frame_size >> 1;
- dev->bytesperline = dev->width * 2;
- dev->hscale = hscale;
- dev->vscale = vscale;
- em28xx_uninit_isoc(dev);
- em28xx_set_alternate(dev);
- em28xx_capture_start(dev, 1);
- em28xx_resolution_set(dev);
- em28xx_init_isoc(dev);
+ f->state = F_UNUSED;
+ memcpy(b, &f->buf, sizeof(*b));
+
+ if (f->vma_use_count)
+ b->flags |= V4L2_BUF_FLAG_MAPPED;
return 0;
}
/*
- * em28xx_v4l2_do_ioctl()
- * This function is _not_ called directly, but from
- * em28xx_v4l2_ioctl. Userspace
- * copying is done already, arg is a kernel pointer.
+ * em28xx_v4l2_open()
+ * inits the device and starts isoc transfer
*/
-static int em28xx_do_ioctl(struct inode *inode, struct file *filp,
- struct em28xx *dev, unsigned int cmd, void *arg,
- v4l2_kioctl driver_ioctl)
+static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
{
- struct em28xx_fh *fh = filp->private_data;
- int ret;
-
- switch (cmd) {
- /* ---------- tv norms ---------- */
- case VIDIOC_ENUMSTD:
- {
- struct v4l2_standard *e = arg;
- unsigned int i;
+ int minor = iminor(inode);
+ int errCode = 0;
+ struct em28xx *h,*dev = NULL;
+ struct em28xx_fh *fh;
- i = e->index;
- if (i >= TVNORMS)
- return -EINVAL;
- ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
- tvnorms[e->index].name);
- e->index = i;
- if (ret < 0)
- return ret;
- return 0;
+ list_for_each_entry(h, &em28xx_devlist, devlist) {
+ if (h->vdev->minor == minor) {
+ dev = h;
+ dev->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ }
+ if (h->vbi_dev->minor == minor) {
+ dev = h;
+ dev->type = V4L2_BUF_TYPE_VBI_CAPTURE;
+ }
}
- case VIDIOC_G_STD:
- {
- v4l2_std_id *id = arg;
+ if (NULL == dev)
+ return -ENODEV;
- *id = dev->tvnorm->id;
- return 0;
+ em28xx_videodbg("open minor=%d type=%s users=%d\n",
+ minor,v4l2_type_names[dev->type],dev->users);
+
+ fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
+
+ if (!fh) {
+ em28xx_errdev("em28xx-video.c: Out of memory?!\n");
+ return -ENOMEM;
}
- case VIDIOC_S_STD:
- {
- v4l2_std_id *id = arg;
- unsigned int i;
+ mutex_lock(&dev->lock);
+ fh->dev = dev;
+ filp->private_data = fh;
- for (i = 0; i < TVNORMS; i++)
- if (*id == tvnorms[i].id)
- break;
- if (i == TVNORMS)
- for (i = 0; i < TVNORMS; i++)
- if (*id & tvnorms[i].id)
- break;
- if (i == TVNORMS)
- return -EINVAL;
+ if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
+ em28xx_set_alternate(dev);
- mutex_lock(&dev->lock);
- dev->tvnorm = &tvnorms[i];
+ dev->width = norm_maxw(dev);
+ dev->height = norm_maxh(dev);
+ dev->frame_size = dev->width * dev->height * 2;
+ dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
+ dev->bytesperline = dev->width * 2;
+ dev->hscale = 0;
+ dev->vscale = 0;
- em28xx_set_norm(dev, dev->width, dev->height);
+ em28xx_capture_start(dev, 1);
+ em28xx_resolution_set(dev);
- em28xx_i2c_call_clients(dev, VIDIOC_S_STD,
- &dev->tvnorm->id);
- mutex_unlock(&dev->lock);
+ /* start the transfer */
+ errCode = em28xx_init_isoc(dev);
+ if (errCode)
+ goto err;
- return 0;
+ em28xx_empty_framequeues(dev);
}
- /* ------ input switching ---------- */
- case VIDIOC_ENUMINPUT:
- {
- struct v4l2_input *i = arg;
- unsigned int n;
- static const char *iname[] = {
- [EM28XX_VMUX_COMPOSITE1] = "Composite1",
- [EM28XX_VMUX_COMPOSITE2] = "Composite2",
- [EM28XX_VMUX_COMPOSITE3] = "Composite3",
- [EM28XX_VMUX_COMPOSITE4] = "Composite4",
- [EM28XX_VMUX_SVIDEO] = "S-Video",
- [EM28XX_VMUX_TELEVISION] = "Television",
- [EM28XX_VMUX_CABLE] = "Cable TV",
- [EM28XX_VMUX_DVB] = "DVB",
- [EM28XX_VMUX_DEBUG] = "for debug only",
- };
-
- n = i->index;
- if (n >= MAX_EM28XX_INPUT)
- return -EINVAL;
- if (0 == INPUT(n)->type)
- return -EINVAL;
- memset(i, 0, sizeof(*i));
- i->index = n;
- i->type = V4L2_INPUT_TYPE_CAMERA;
- strcpy(i->name, iname[INPUT(n)->type]);
- if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
- (EM28XX_VMUX_CABLE == INPUT(n)->type))
- i->type = V4L2_INPUT_TYPE_TUNER;
- for (n = 0; n < ARRAY_SIZE(tvnorms); n++)
- i->std |= tvnorms[n].id;
- return 0;
- }
- case VIDIOC_G_INPUT:
- {
- int *i = arg;
- *i = dev->ctl_input;
+ dev->users++;
- return 0;
- }
- case VIDIOC_S_INPUT:
- {
- int *index = arg;
+err:
+ mutex_unlock(&dev->lock);
+ return errCode;
+}
- if (*index >= MAX_EM28XX_INPUT)
- return -EINVAL;
- if (0 == INPUT(*index)->type)
- return -EINVAL;
+/*
+ * em28xx_realease_resources()
+ * unregisters the v4l2,i2c and usb devices
+ * called when the device gets disconected or at module unload
+*/
+static void em28xx_release_resources(struct em28xx *dev)
+{
- mutex_lock(&dev->lock);
- video_mux(dev, *index);
- mutex_unlock(&dev->lock);
+ /*FIXME: I2C IR should be disconnected */
- return 0;
- }
- case VIDIOC_G_AUDIO:
- {
- struct v4l2_audio *a = arg;
- unsigned int index = a->index;
+ em28xx_info("V4L2 devices /dev/video%d and /dev/vbi%d deregistered\n",
+ dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN,
+ dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN);
+ list_del(&dev->devlist);
+ video_unregister_device(dev->vdev);
+ video_unregister_device(dev->vbi_dev);
+ em28xx_i2c_unregister(dev);
+ usb_put_dev(dev->udev);
- if (a->index > 1)
- return -EINVAL;
- memset(a, 0, sizeof(*a));
- index = dev->ctl_ainput;
- if (index == 0) {
- strcpy(a->name, "Television");
- } else {
- strcpy(a->name, "Line In");
+ /* Mark device as unused */
+ em28xx_devused&=~(1<<dev->devno);
+}
+
+/*
+ * em28xx_v4l2_close()
+ * stops streaming and deallocates all resources allocated by the v4l2 calls and ioctls
+ */
+static int em28xx_v4l2_close(struct inode *inode, struct file *filp)
+{
+ struct em28xx_fh *fh = filp->private_data;
+ struct em28xx *dev = fh->dev;
+ int errCode;
+
+ em28xx_videodbg("users=%d\n", dev->users);
+
+
+ if (res_check(fh))
+ res_free(fh);
+
+ mutex_lock(&dev->lock);
+
+ if (dev->users == 1) {
+ em28xx_uninit_isoc(dev);
+ em28xx_release_buffers(dev);
+ dev->io = IO_NONE;
+
+ /* the device is already disconnect,
+ free the remaining resources */
+ if (dev->state & DEV_DISCONNECTED) {
+ em28xx_release_resources(dev);
+ mutex_unlock(&dev->lock);
+ kfree(dev);
+ return 0;
+ }
+
+ /* set alternate 0 */
+ dev->alt = 0;
+ em28xx_videodbg("setting alternate 0\n");
+ errCode = usb_set_interface(dev->udev, 0, 0);
+ if (errCode < 0) {
+ em28xx_errdev("cannot change alternate number to "
+ "0 (error=%i)\n", errCode);
}
- a->capability = V4L2_AUDCAP_STEREO;
- a->index = index;
- return 0;
}
- case VIDIOC_S_AUDIO:
- {
- struct v4l2_audio *a = arg;
+ kfree(fh);
+ dev->users--;
+ wake_up_interruptible_nr(&dev->open, 1);
+ mutex_unlock(&dev->lock);
+ return 0;
+}
- if (a->index != dev->ctl_ainput)
- return -EINVAL;
+/*
+ * em28xx_v4l2_read()
+ * will allocate buffers when called for the first time
+ */
+static ssize_t
+em28xx_v4l2_read(struct file *filp, char __user * buf, size_t count,
+ loff_t * f_pos)
+{
+ struct em28xx_frame_t *f, *i;
+ unsigned long lock_flags;
+ int ret = 0;
+ struct em28xx_fh *fh = filp->private_data;
+ struct em28xx *dev = fh->dev;
- return 0;
- }
+ /* FIXME: read() is not prepared to allow changing the video
+ resolution while streaming. Seems a bug at em28xx_set_fmt
+ */
- /* --- controls ---------------------------------------------- */
- case VIDIOC_QUERYCTRL:
- {
- struct v4l2_queryctrl *qc = arg;
- int i, id=qc->id;
-
- memset(qc,0,sizeof(*qc));
- qc->id=id;
-
- if (!dev->has_msp34xx) {
- for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
- if (qc->id && qc->id == em28xx_qctrl[i].id) {
- memcpy(qc, &(em28xx_qctrl[i]),
- sizeof(*qc));
- return 0;
- }
- }
+ if (unlikely(res_get(fh) < 0))
+ return -EBUSY;
+
+ mutex_lock(&dev->lock);
+
+ if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ em28xx_videodbg("V4l2_Buf_type_videocapture is set\n");
+
+ if (dev->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
+ em28xx_videodbg("V4L2_BUF_TYPE_VBI_CAPTURE is set\n");
+ em28xx_videodbg("not supported yet! ...\n");
+ if (copy_to_user(buf, "", 1)) {
+ mutex_unlock(&dev->lock);
+ return -EFAULT;
}
- mutex_lock(&dev->lock);
- em28xx_i2c_call_clients(dev,cmd,qc);
mutex_unlock(&dev->lock);
- if (qc->type)
- return 0;
- else
- return -EINVAL;
+ return (1);
}
- case VIDIOC_G_CTRL:
- {
- struct v4l2_control *ctrl = arg;
- int retval=-EINVAL;
-
- if (!dev->has_msp34xx)
- retval=em28xx_get_ctrl(dev, ctrl);
- if (retval==-EINVAL) {
- mutex_lock(&dev->lock);
- em28xx_i2c_call_clients(dev,cmd,arg);
+ if (dev->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) {
+ em28xx_videodbg("V4L2_BUF_TYPE_SLICED_VBI_CAPTURE is set\n");
+ em28xx_videodbg("not supported yet! ...\n");
+ if (copy_to_user(buf, "", 1)) {
mutex_unlock(&dev->lock);
- return 0;
- } else return retval;
- }
- case VIDIOC_S_CTRL:
- {
- struct v4l2_control *ctrl = arg;
- u8 i;
- mutex_lock(&dev->lock);
-
- if (!dev->has_msp34xx){
- for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
- if (ctrl->id == em28xx_qctrl[i].id) {
- int retval=-EINVAL;
- if (ctrl->value <
- em28xx_qctrl[i].minimum
- || ctrl->value >
- em28xx_qctrl[i].maximum)
- return -ERANGE;
- retval = em28xx_set_ctrl(dev, ctrl);
- mutex_unlock(&dev->lock);
- return retval;
- }
- }
+ return -EFAULT;
}
-
- em28xx_i2c_call_clients(dev,cmd,arg);
mutex_unlock(&dev->lock);
- return 0;
+ return (1);
}
- /* --- tuner ioctls ------------------------------------------ */
- case VIDIOC_G_TUNER:
- {
- struct v4l2_tuner *t = arg;
- if (0 != t->index)
- return -EINVAL;
+ if (dev->state & DEV_DISCONNECTED) {
+ em28xx_videodbg("device not present\n");
+ mutex_unlock(&dev->lock);
+ return -ENODEV;
+ }
- memset(t, 0, sizeof(*t));
- strcpy(t->name, "Tuner");
- mutex_lock(&dev->lock);
- /* let clients fill in the remainder of this struct */
- em28xx_i2c_call_clients(dev, cmd, t);
+ if (dev->state & DEV_MISCONFIGURED) {
+ em28xx_videodbg("device misconfigured; close and open it again\n");
mutex_unlock(&dev->lock);
- em28xx_videodbg("VIDIO_G_TUNER: signal=%x, afc=%x\n", t->signal,
- t->afc);
- return 0;
+ return -EIO;
}
- case VIDIOC_S_TUNER:
- {
- struct v4l2_tuner *t = arg;
- if (0 != t->index)
- return -EINVAL;
- mutex_lock(&dev->lock);
- /* let clients handle this */
- em28xx_i2c_call_clients(dev, cmd, t);
+ if (dev->io == IO_MMAP) {
+ em28xx_videodbg ("IO method is set to mmap; close and open"
+ " the device again to choose the read method\n");
mutex_unlock(&dev->lock);
- return 0;
+ return -EINVAL;
}
- case VIDIOC_G_FREQUENCY:
- {
- struct v4l2_frequency *f = arg;
-
- memset(f, 0, sizeof(*f));
- f->type = V4L2_TUNER_ANALOG_TV;
- f->frequency = dev->ctl_freq;
- return 0;
+ if (dev->io == IO_NONE) {
+ if (!em28xx_request_buffers(dev, EM28XX_NUM_READ_FRAMES)) {
+ em28xx_errdev("read failed, not enough memory\n");
+ mutex_unlock(&dev->lock);
+ return -ENOMEM;
+ }
+ dev->io = IO_READ;
+ dev->stream = STREAM_ON;
+ em28xx_queue_unusedframes(dev);
}
- case VIDIOC_S_FREQUENCY:
- {
- struct v4l2_frequency *f = arg;
-
- if (0 != f->tuner)
- return -EINVAL;
-
- if (V4L2_TUNER_ANALOG_TV != f->type)
- return -EINVAL;
- mutex_lock(&dev->lock);
- dev->ctl_freq = f->frequency;
- em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f);
+ if (!count) {
mutex_unlock(&dev->lock);
return 0;
}
- case VIDIOC_CROPCAP:
- {
- struct v4l2_cropcap *cc = arg;
- if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
- cc->bounds.left = 0;
- cc->bounds.top = 0;
- cc->bounds.width = dev->width;
- cc->bounds.height = dev->height;
- cc->defrect = cc->bounds;
- cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
- cc->pixelaspect.denominator = 59;
- return 0;
+ if (list_empty(&dev->outqueue)) {
+ if (filp->f_flags & O_NONBLOCK) {
+ mutex_unlock(&dev->lock);
+ return -EAGAIN;
+ }
+ ret = wait_event_interruptible
+ (dev->wait_frame,
+ (!list_empty(&dev->outqueue)) ||
+ (dev->state & DEV_DISCONNECTED));
+ if (ret) {
+ mutex_unlock(&dev->lock);
+ return ret;
+ }
+ if (dev->state & DEV_DISCONNECTED) {
+ mutex_unlock(&dev->lock);
+ return -ENODEV;
+ }
+ dev->video_bytesread = 0;
}
- case VIDIOC_STREAMON:
- {
- int *type = arg;
- if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE
- || dev->io != IO_MMAP)
- return -EINVAL;
-
- if (list_empty(&dev->inqueue))
- return -EINVAL;
+ f = list_entry(dev->outqueue.prev, struct em28xx_frame_t, frame);
- if (unlikely(res_get(fh) < 0))
- return -EBUSY;
+ em28xx_queue_unusedframes(dev);
- dev->stream = STREAM_ON; /* FIXME: Start video capture here? */
+ if (count > f->buf.length)
+ count = f->buf.length;
- em28xx_videodbg("VIDIOC_STREAMON: starting stream\n");
+ if ((dev->video_bytesread + count) > dev->frame_size)
+ count = dev->frame_size - dev->video_bytesread;
- return 0;
+ if (copy_to_user(buf, f->bufmem+dev->video_bytesread, count)) {
+ em28xx_err("Error while copying to user\n");
+ return -EFAULT;
}
- case VIDIOC_STREAMOFF:
- {
- int *type = arg;
- int ret;
+ dev->video_bytesread += count;
- if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE
- || dev->io != IO_MMAP)
- return -EINVAL;
+ if (dev->video_bytesread == dev->frame_size) {
+ spin_lock_irqsave(&dev->queue_lock, lock_flags);
+ list_for_each_entry(i, &dev->outqueue, frame)
+ i->state = F_UNUSED;
+ INIT_LIST_HEAD(&dev->outqueue);
+ spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
- mutex_lock(&dev->lock);
- if (dev->stream == STREAM_ON) {
- em28xx_videodbg ("VIDIOC_STREAMOFF: interrupting stream\n");
- if ((ret = em28xx_stream_interrupt(dev))){
- mutex_unlock(&dev->lock);
- return ret;
- }
- }
+ em28xx_queue_unusedframes(dev);
+ dev->video_bytesread = 0;
+ }
- em28xx_empty_framequeues(dev);
- mutex_unlock(&dev->lock);
+ *f_pos += count;
- return 0;
- }
- default:
- return v4l_compat_translate_ioctl(inode, filp, cmd, arg,
- driver_ioctl);
- }
- return 0;
+ mutex_unlock(&dev->lock);
+
+ return count;
}
/*
- * em28xx_v4l2_do_ioctl()
- * This function is _not_ called directly, but from
- * em28xx_v4l2_ioctl. Userspace
- * copying is done already, arg is a kernel pointer.
+ * em28xx_v4l2_poll()
+ * will allocate buffers when called for the first time
*/
-static int em28xx_video_do_ioctl(struct inode *inode, struct file *filp,
- unsigned int cmd, void *arg)
+static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait)
{
+ unsigned int mask = 0;
struct em28xx_fh *fh = filp->private_data;
- struct em28xx *dev = fh->dev;
+ struct em28xx *dev = fh->dev;
- if (!dev)
- return -ENODEV;
+ if (unlikely(res_get(fh) < 0))
+ return POLLERR;
- if (video_debug > 1)
- v4l_print_ioctl(dev->name,cmd);
-
- switch (cmd) {
-
- /* --- capabilities ------------------------------------------ */
- case VIDIOC_QUERYCAP:
- {
- struct v4l2_capability *cap = arg;
-
- memset(cap, 0, sizeof(*cap));
- strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
- strlcpy(cap->card, em28xx_boards[dev->model].name,
- sizeof(cap->card));
- strlcpy(cap->bus_info, dev->udev->dev.bus_id,
- sizeof(cap->bus_info));
- cap->version = EM28XX_VERSION_CODE;
- cap->capabilities =
- V4L2_CAP_SLICED_VBI_CAPTURE |
- V4L2_CAP_VIDEO_CAPTURE |
- V4L2_CAP_AUDIO |
- V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
- if (dev->has_tuner)
- cap->capabilities |= V4L2_CAP_TUNER;
- return 0;
- }
- /* --- capture ioctls ---------------------------------------- */
- case VIDIOC_ENUM_FMT:
- {
- struct v4l2_fmtdesc *fmtd = arg;
+ mutex_lock(&dev->lock);
- if (fmtd->index != 0)
- return -EINVAL;
- memset(fmtd, 0, sizeof(*fmtd));
- fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- strcpy(fmtd->description, "Packed YUY2");
- fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
- memset(fmtd->reserved, 0, sizeof(fmtd->reserved));
- return 0;
- }
- case VIDIOC_G_FMT:
- {
- int retval;
- mutex_lock(&dev->lock);
- retval = em28xx_get_fmt(dev, (struct v4l2_format *) arg);
- mutex_unlock(&dev->lock);
- return retval;
+ if (dev->state & DEV_DISCONNECTED) {
+ em28xx_videodbg("device not present\n");
+ } else if (dev->state & DEV_MISCONFIGURED) {
+ em28xx_videodbg("device is misconfigured; close and open it again\n");
+ } else {
+ if (dev->io == IO_NONE) {
+ if (!em28xx_request_buffers
+ (dev, EM28XX_NUM_READ_FRAMES)) {
+ em28xx_warn
+ ("poll() failed, not enough memory\n");
+ } else {
+ dev->io = IO_READ;
+ dev->stream = STREAM_ON;
+ }
+ }
- }
- case VIDIOC_TRY_FMT:
- case VIDIOC_S_FMT:
- {
- int retval;
- mutex_lock(&dev->lock);
- retval = em28xx_set_fmt(dev, cmd, (struct v4l2_format *)arg);
- mutex_unlock(&dev->lock);
- return retval;
- }
+ if (dev->io == IO_READ) {
+ em28xx_queue_unusedframes(dev);
+ poll_wait(filp, &dev->wait_frame, wait);
- case VIDIOC_REQBUFS:
- {
- struct v4l2_requestbuffers *rb = arg;
- u32 i;
- int ret;
+ if (!list_empty(&dev->outqueue))
+ mask |= POLLIN | POLLRDNORM;
- if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
- rb->memory != V4L2_MEMORY_MMAP)
- return -EINVAL;
+ mutex_unlock(&dev->lock);
- if (dev->io == IO_READ) {
- em28xx_videodbg ("method is set to read;"
- " close and open the device again to"
- " choose the mmap I/O method\n");
- return -EINVAL;
+ return mask;
}
+ }
- for (i = 0; i < dev->num_frames; i++)
- if (dev->frame[i].vma_use_count) {
- em28xx_videodbg ("VIDIOC_REQBUFS failed; previous buffers are still mapped\n");
- return -EINVAL;
- }
-
- mutex_lock(&dev->lock);
- if (dev->stream == STREAM_ON) {
- em28xx_videodbg("VIDIOC_REQBUFS: interrupting stream\n");
- if ((ret = em28xx_stream_interrupt(dev))){
- mutex_unlock(&dev->lock);
- return ret;
- }
- }
+ mutex_unlock(&dev->lock);
+ return POLLERR;
+}
- em28xx_empty_framequeues(dev);
+/*
+ * em28xx_v4l2_mmap()
+ */
+static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+ struct em28xx_fh *fh = filp->private_data;
+ struct em28xx *dev = fh->dev;
+ unsigned long size = vma->vm_end - vma->vm_start;
+ unsigned long start = vma->vm_start;
+ void *pos;
+ u32 i;
- em28xx_release_buffers(dev);
- if (rb->count)
- rb->count =
- em28xx_request_buffers(dev, rb->count);
+ if (unlikely(res_get(fh) < 0))
+ return -EBUSY;
- dev->frame_current = NULL;
+ mutex_lock(&dev->lock);
- em28xx_videodbg ("VIDIOC_REQBUFS: setting io method to mmap: num bufs %i\n",
- rb->count);
- dev->io = rb->count ? IO_MMAP : IO_NONE;
+ if (dev->state & DEV_DISCONNECTED) {
+ em28xx_videodbg("mmap: device not present\n");
mutex_unlock(&dev->lock);
- return 0;
+ return -ENODEV;
}
- case VIDIOC_QUERYBUF:
- {
- struct v4l2_buffer *b = arg;
-
- if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
- b->index >= dev->num_frames || dev->io != IO_MMAP)
- return -EINVAL;
-
- memcpy(b, &dev->frame[b->index].buf, sizeof(*b));
- if (dev->frame[b->index].vma_use_count) {
- b->flags |= V4L2_BUF_FLAG_MAPPED;
- }
- if (dev->frame[b->index].state == F_DONE)
- b->flags |= V4L2_BUF_FLAG_DONE;
- else if (dev->frame[b->index].state != F_UNUSED)
- b->flags |= V4L2_BUF_FLAG_QUEUED;
- return 0;
+ if (dev->state & DEV_MISCONFIGURED) {
+ em28xx_videodbg ("mmap: Device is misconfigured; close and "
+ "open it again\n");
+ mutex_unlock(&dev->lock);
+ return -EIO;
}
- case VIDIOC_QBUF:
- {
- struct v4l2_buffer *b = arg;
- unsigned long lock_flags;
-
- if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
- b->index >= dev->num_frames || dev->io != IO_MMAP) {
- return -EINVAL;
- }
-
- if (dev->frame[b->index].state != F_UNUSED) {
- return -EAGAIN;
- }
- dev->frame[b->index].state = F_QUEUED;
- /* add frame to fifo */
- spin_lock_irqsave(&dev->queue_lock, lock_flags);
- list_add_tail(&dev->frame[b->index].frame,
- &dev->inqueue);
- spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
-
- return 0;
+ if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE)) {
+ mutex_unlock(&dev->lock);
+ return -EINVAL;
}
- case VIDIOC_DQBUF:
- {
- struct v4l2_buffer *b = arg;
- struct em28xx_frame_t *f;
- unsigned long lock_flags;
- int ret = 0;
-
- if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE
- || dev->io != IO_MMAP)
- return -EINVAL;
-
- if (list_empty(&dev->outqueue)) {
- if (dev->stream == STREAM_OFF)
- return -EINVAL;
- if (filp->f_flags & O_NONBLOCK)
- return -EAGAIN;
- ret = wait_event_interruptible
- (dev->wait_frame,
- (!list_empty(&dev->outqueue)) ||
- (dev->state & DEV_DISCONNECTED));
- if (ret)
- return ret;
- if (dev->state & DEV_DISCONNECTED)
- return -ENODEV;
- }
-
- spin_lock_irqsave(&dev->queue_lock, lock_flags);
- f = list_entry(dev->outqueue.next,
- struct em28xx_frame_t, frame);
- list_del(dev->outqueue.next);
- spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
- f->state = F_UNUSED;
- memcpy(b, &f->buf, sizeof(*b));
+ if (size > PAGE_ALIGN(dev->frame[0].buf.length))
+ size = PAGE_ALIGN(dev->frame[0].buf.length);
- if (f->vma_use_count)
- b->flags |= V4L2_BUF_FLAG_MAPPED;
-
- return 0;
+ for (i = 0; i < dev->num_frames; i++) {
+ if ((dev->frame[i].buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff)
+ break;
}
- default:
- return em28xx_do_ioctl(inode, filp, dev, cmd, arg,
- em28xx_video_do_ioctl);
+ if (i == dev->num_frames) {
+ em28xx_videodbg("mmap: user supplied mapping address is out of range\n");
+ mutex_unlock(&dev->lock);
+ return -EINVAL;
}
- return 0;
-}
-
-/*
- * em28xx_v4l2_ioctl()
- * handle v4l2 ioctl the main action happens in em28xx_v4l2_do_ioctl()
- */
-static int em28xx_v4l2_ioctl(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
-{
- int ret = 0;
- struct em28xx_fh *fh = filp->private_data;
- struct em28xx *dev = fh->dev;
- if (dev->state & DEV_DISCONNECTED) {
- em28xx_errdev("v4l2 ioctl: device not present\n");
- return -ENODEV;
- }
+ /* VM_IO is eventually going to replace PageReserved altogether */
+ vma->vm_flags |= VM_IO;
+ vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
- if (dev->state & DEV_MISCONFIGURED) {
- em28xx_errdev
- ("v4l2 ioctl: device is misconfigured; close and open it again\n");
- return -EIO;
+ pos = dev->frame[i].bufmem;
+ while (size > 0) { /* size is page-aligned */
+ if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
+ em28xx_videodbg("mmap: vm_insert_page failed\n");
+ mutex_unlock(&dev->lock);
+ return -EAGAIN;
+ }
+ start += PAGE_SIZE;
+ pos += PAGE_SIZE;
+ size -= PAGE_SIZE;
}
- ret = video_usercopy(inode, filp, cmd, arg, em28xx_video_do_ioctl);
+ vma->vm_ops = &em28xx_vm_ops;
+ vma->vm_private_data = &dev->frame[i];
- return ret;
+ em28xx_vm_open(vma);
+ mutex_unlock(&dev->lock);
+ return 0;
}
static const struct file_operations em28xx_v4l_fops = {
- .owner = THIS_MODULE,
- .open = em28xx_v4l2_open,
- .release = em28xx_v4l2_close,
- .ioctl = em28xx_v4l2_ioctl,
- .read = em28xx_v4l2_read,
- .poll = em28xx_v4l2_poll,
- .mmap = em28xx_v4l2_mmap,
- .llseek = no_llseek,
- .compat_ioctl = v4l_compat_ioctl32,
+ .owner = THIS_MODULE,
+ .open = em28xx_v4l2_open,
+ .release = em28xx_v4l2_close,
+ .read = em28xx_v4l2_read,
+ .poll = em28xx_v4l2_poll,
+ .mmap = em28xx_v4l2_mmap,
+ .ioctl = video_ioctl2,
+ .llseek = no_llseek,
+ .compat_ioctl = v4l_compat_ioctl32,
+};
+static const struct video_device em28xx_video_template = {
+ .fops = &em28xx_v4l_fops,
+ .release = video_device_release,
+
+ .minor = -1,
+ .vidioc_querycap = vidioc_querycap,
+ .vidioc_enum_fmt_cap = vidioc_enum_fmt_cap,
+ .vidioc_g_fmt_cap = vidioc_g_fmt_cap,
+ .vidioc_try_fmt_cap = vidioc_try_fmt_cap,
+ .vidioc_s_fmt_cap = vidioc_s_fmt_cap,
+ .vidioc_g_audio = vidioc_g_audio,
+ .vidioc_s_audio = vidioc_s_audio,
+ .vidioc_cropcap = vidioc_cropcap,
+
+ .vidioc_g_fmt_vbi_capture = vidioc_g_fmt_vbi_capture,
+ .vidioc_try_fmt_vbi_capture = vidioc_try_set_vbi_capture,
+ .vidioc_s_fmt_vbi_capture = vidioc_try_set_vbi_capture,
+
+ .vidioc_reqbufs = vidioc_reqbufs,
+ .vidioc_querybuf = vidioc_querybuf,
+ .vidioc_qbuf = vidioc_qbuf,
+ .vidioc_dqbuf = vidioc_dqbuf,
+ .vidioc_s_std = vidioc_s_std,
+ .vidioc_enum_input = vidioc_enum_input,
+ .vidioc_g_input = vidioc_g_input,
+ .vidioc_s_input = vidioc_s_input,
+ .vidioc_queryctrl = vidioc_queryctrl,
+ .vidioc_g_ctrl = vidioc_g_ctrl,
+ .vidioc_s_ctrl = vidioc_s_ctrl,
+ .vidioc_streamon = vidioc_streamon,
+ .vidioc_streamoff = vidioc_streamoff,
+ .vidioc_g_tuner = vidioc_g_tuner,
+ .vidioc_s_tuner = vidioc_s_tuner,
+ .vidioc_g_frequency = vidioc_g_frequency,
+ .vidioc_s_frequency = vidioc_s_frequency,
+
+ .tvnorms = V4L2_STD_ALL,
+ .current_norm = V4L2_STD_NTSC_M,
};
+
/******************************** usb interface *****************************************/
/*
errCode = em28xx_config(dev);
- /* allocate and fill v4l2 device struct */
+ /* allocate and fill video video_device struct */
dev->vdev = video_device_alloc();
if (NULL == dev->vdev) {
em28xx_errdev("cannot allocate video_device.\n");
kfree(dev);
return -ENOMEM;
}
+ memcpy(dev->vdev, &em28xx_video_template,
+ sizeof(em28xx_video_template));
+ dev->vdev->type = VID_TYPE_CAPTURE;
+ if (dev->has_tuner)
+ dev->vdev->type |= VID_TYPE_TUNER;
+ dev->vdev->dev = &dev->udev->dev;
+ snprintf(dev->vdev->name, sizeof(dev->vbi_dev->name),
+ "%s#%d %s", "em28xx", dev->devno, "video");
+ dev->vdev->current_norm = dev->tvnorm->id;
+ /* Allocate and fill vbi video_device struct */
dev->vbi_dev = video_device_alloc();
if (NULL == dev->vbi_dev) {
em28xx_errdev("cannot allocate video_device.\n");
kfree(dev);
return -ENOMEM;
}
-
- /* Fills VBI device info */
+ memcpy(dev->vbi_dev, &em28xx_video_template,
+ sizeof(em28xx_video_template));
dev->vbi_dev->type = VFL_TYPE_VBI;
- dev->vbi_dev->fops = &em28xx_v4l_fops;
- dev->vbi_dev->minor = -1;
dev->vbi_dev->dev = &dev->udev->dev;
- dev->vbi_dev->release = video_device_release;
- snprintf(dev->vbi_dev->name, sizeof(dev->vbi_dev->name), "%s#%d %s",
- "em28xx",dev->devno,"vbi");
-
- /* Fills CAPTURE device info */
- dev->vdev->type = VID_TYPE_CAPTURE;
- if (dev->has_tuner)
- dev->vdev->type |= VID_TYPE_TUNER;
- dev->vdev->fops = &em28xx_v4l_fops;
- dev->vdev->minor = -1;
- dev->vdev->dev = &dev->udev->dev;
- dev->vdev->release = video_device_release;
- snprintf(dev->vdev->name, sizeof(dev->vbi_dev->name), "%s#%d %s",
- "em28xx",dev->devno,"video");
+ snprintf(dev->vbi_dev->name, sizeof(dev->vbi_dev->name),
+ "%s#%d %s", "em28xx", dev->devno, "vbi");
+ dev->vbi_dev->current_norm = dev->tvnorm->id;
list_add_tail(&dev->devlist,&em28xx_devlist);
-
if (dev->has_msp34xx) {
/* Send a reset to other chips via gpio */
em28xx_write_regs_req(dev, 0x00, 0x08, "\xf7", 1);
msleep(3);
em28xx_write_regs_req(dev, 0x00, 0x08, "\xff", 1);
msleep(3);
-
}
+
video_mux(dev, 0);
- /* register v4l2 device */
+ /* register v4l2 video video_device */
if ((retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
video_nr[dev->devno]))) {
em28xx_errdev("unable to register video device (error=%i).\n",
return -ENODEV;
}
+ /* register v4l2 vbi video_device */
if (video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
vbi_nr[dev->devno]) < 0) {
printk("unable to register vbi device\n");
em28xx_devused&=~(1<<dev->devno);
kfree(dev);
return -ENODEV;
- } else {
- printk("registered VBI\n");
}
em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
projects / GitHub / LineageOS / android_kernel_samsung_universal7580.git / commitdiff