diff options
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-video.c | 1935 |
1 files changed, 1011 insertions, 924 deletions
diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c index 8a4d221a4fe4..022afb7b98c4 100644 --- a/drivers/media/video/em28xx/em28xx-video.c +++ b/drivers/media/video/em28xx/em28xx-video.c @@ -47,7 +47,7 @@ #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) \ @@ -202,8 +202,6 @@ static void video_mux(struct em28xx *dev, int index) 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); @@ -264,6 +262,944 @@ static void res_free(struct em28xx_fh *fh) } /* + * em28xx_vm_open() + */ +static void em28xx_vm_open(struct vm_area_struct *vma) +{ + struct em28xx_frame_t *f = vma->vm_private_data; + f->vma_use_count++; +} + +/* + * 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; + + if (f->vma_use_count) + f->vma_use_count--; +} + +static struct vm_operations_struct em28xx_vm_ops = { + .open = em28xx_vm_open, + .close = em28xx_vm_close, +}; + + +/* + * 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; + } +} + +/* + * 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; + } +} + +/* + * em28xx_stream_interrupt() + * stops streaming + */ +static int em28xx_stream_interrupt(struct em28xx *dev) +{ + int rc = 0; + + /* 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); + + 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; + } + + return 0; +} + + +static int check_dev(struct em28xx *dev) +{ + if (dev->state & DEV_DISCONNECTED) { + em28xx_errdev("v4l2 ioctl: device not present\n"); + return -ENODEV; + } + + if (dev->state & DEV_MISCONFIGURED) { + em28xx_errdev("v4l2 ioctl: device is misconfigured; " + "close and open it again\n"); + return -EIO; + } + return 0; +} + +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; +} + +/* ------------------------------------------------------------------ + 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; + + mutex_lock(&dev->lock); + + 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; + + mutex_unlock(&dev->lock); + return 0; +} + +static int vidioc_try_fmt_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + 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; + + 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 (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; + } + + get_scale(dev, width, height, &hscale, &vscale); + + width = (((unsigned long)maxw) << 12) / (hscale + 4096L); + height = (((unsigned long)maxh) << 12) / (vscale + 4096L); + + 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; + + mutex_unlock(&dev->lock); + return 0; +} + +static int vidioc_s_fmt_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc, i; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + vidioc_try_fmt_cap(file, priv, f); + + mutex_lock(&dev->lock); + + 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; + } + + /* 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; + } + + em28xx_release_buffers(dev); + dev->io = IO_NONE; + + /* 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); + + /* 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; + + *norm = tvnorms[i].id; + + mutex_lock(&dev->lock); + dev->tvnorm = &tvnorms[i]; + mutex_unlock(&dev->lock); + + /* Adjusts width/height, if needed */ + f.fmt.pix.width = dev->width; + f.fmt.pix.height = dev->height; + vidioc_try_fmt_cap(file, priv, &f); + + mutex_lock(&dev->lock); + + /* 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); + + em28xx_resolution_set(dev); + em28xx_i2c_call_clients(dev, VIDIOC_S_STD, &dev->tvnorm->id); + + mutex_unlock(&dev->lock); + return 0; +} + +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", +}; + +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; + + n = i->index; + if (n >= MAX_EM28XX_INPUT) + return -EINVAL; + if (0 == INPUT(n)->type) + return -EINVAL; + + 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; +} + +static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + + *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); + + video_mux(dev, i); + + mutex_unlock(&dev->lock); + return 0; +} + +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; + + if (a->index > 1) + return -EINVAL; + + 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; + + return 0; +} + +static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + + if (a->index != dev->ctl_ainput) + return -EINVAL; + + return 0; +} + +static int vidioc_queryctrl(struct file *file, void *priv, + struct v4l2_queryctrl *qc) +{ + 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; + + 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 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; + + 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 = priv; + struct em28xx *dev = fh->dev; + u8 i; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + mutex_lock(&dev->lock); + + 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; + } + } + } + + /* 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; + } + + 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; + + 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; + + mutex_lock(&dev->lock); + + em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t); + + 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); + + mutex_unlock(&dev->lock); + return 0; +} + +static int vidioc_cropcap(struct file *file, void *priv, + struct v4l2_cropcap *cc) +{ + 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; +} + +static int vidioc_streamon(struct file *file, void *priv, + enum v4l2_buf_type type) +{ + 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; +} + +static int vidioc_streamoff(struct file *file, void *priv, + enum v4l2_buf_type type) +{ + 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; + + 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 vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->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)); + + 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; +} + +static int vidioc_enum_fmt_cap(struct file *file, void *priv, + struct v4l2_fmtdesc *fmtd) +{ + if (fmtd->index != 0) + return -EINVAL; + + 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; +} + +/* Sliced VBI ioctls */ +static int vidioc_g_fmt_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); + + f->fmt.sliced.service_set = 0; + + em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f); + + 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; +} + + +static int vidioc_reqbufs(struct file *file, void *priv, + struct v4l2_requestbuffers *rb) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + u32 i; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || + rb->memory != V4L2_MEMORY_MMAP) + return -EINVAL; + + 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; + } + + 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"); + 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; +} + +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; + + mutex_lock(&dev->lock); + + 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; + + 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; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP || + b->index >= dev->num_frames) + 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; +} + +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 (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 (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; + } + + 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 (f->vma_use_count) + b->flags |= V4L2_BUF_FLAG_MAPPED; + + return 0; +} + +/* * em28xx_v4l2_open() * inits the device and starts isoc transfer */ @@ -587,32 +1523,6 @@ static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait) } /* - * em28xx_vm_open() - */ -static void em28xx_vm_open(struct vm_area_struct *vma) -{ - struct em28xx_frame_t *f = vma->vm_private_data; - f->vma_use_count++; -} - -/* - * 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; - - if (f->vma_use_count) - f->vma_use_count--; -} - -static struct vm_operations_struct em28xx_vm_ops = { - .open = em28xx_vm_open, - .close = em28xx_vm_close, -}; - -/* * em28xx_v4l2_mmap() */ static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) @@ -642,12 +1552,14 @@ static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) return -EIO; } - if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) || - size != PAGE_ALIGN(dev->frame[0].buf.length)) { + if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE)) { mutex_unlock(&dev->lock); return -EINVAL; } + if (size > PAGE_ALIGN(dev->frame[0].buf.length)) + size = PAGE_ALIGN(dev->frame[0].buf.length); + for (i = 0; i < dev->num_frames; i++) { if ((dev->frame[i].buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff) break; @@ -682,879 +1594,59 @@ static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) 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) -{ - 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; - } -} - -/* - * 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; - } -} - -/* - * em28xx_stream_interrupt() - * stops streaming - */ -static int em28xx_stream_interrupt(struct em28xx *dev) -{ - int ret = 0; - - /* stop reading from the device */ - - 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; - } - - return 0; -} - -static int em28xx_set_norm(struct em28xx *dev, int width, int height) -{ - unsigned int hscale, vscale; - unsigned int maxh, maxw; - - maxw = norm_maxw(dev); - maxh = norm_maxh(dev); - - /* width must even because of the YUYV format */ - /* height must be even because of interlacing */ - height &= 0xfffe; - width &= 0xfffe; - - if (height < 32) - height = 32; - if (height > maxh) - height = maxh; - if (width < 48) - width = 48; - if (width > maxw) - width = maxw; - - if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000) - hscale = 0x3fff; - width = (((unsigned long)maxw) << 12) / (hscale + 4096L); - - if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000) - vscale = 0x3fff; - height = (((unsigned long)maxh) << 12) / (vscale + 4096L); - - /* 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; - - em28xx_resolution_set(dev); - - return 0; -} - -static int em28xx_get_fmt(struct em28xx *dev, struct v4l2_format *format) -{ - 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; - } - - case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: - { - format->fmt.sliced.service_set=0; - - em28xx_i2c_call_clients(dev,VIDIOC_G_FMT,format); - - if (format->fmt.sliced.service_set==0) - return -EINVAL; - - break; - } - - default: - return -EINVAL; - } - return (0); -} - -static int em28xx_set_fmt(struct em28xx *dev, unsigned int cmd, struct v4l2_format *format) -{ - 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; - - maxw = norm_maxw(dev); - maxh = norm_maxh(dev); - - 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 (format->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) { - em28xx_i2c_call_clients(dev,VIDIOC_G_FMT,format); - - if (format->fmt.sliced.service_set==0) - return -EINVAL; - - return 0; - } - - - if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - 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); - - /* 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; - - if (height < 32) - height = 32; - if (height > maxh) - height = maxh; - if (width < 48) - width = 48; - if (width > maxw) - width = maxw; - - 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; - } - - if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000) - hscale = 0x3fff; - - width = (((unsigned long)maxw) << 12) / (hscale + 4096L); - - if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000) - vscale = 0x3fff; - - height = (((unsigned long)maxh) << 12) / (vscale + 4096L); - - 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; - - 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); - - if (cmd == VIDIOC_TRY_FMT) - return 0; - - 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"); - 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; - } - - em28xx_release_buffers(dev); - dev->io = IO_NONE; - - /* 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); - - 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. - */ -static int em28xx_do_ioctl(struct inode *inode, struct file *filp, - struct em28xx *dev, unsigned int cmd, void *arg, - v4l2_kioctl driver_ioctl) -{ - struct em28xx_fh *fh = filp->private_data; - int ret; - - switch (cmd) { - /* ---------- tv norms ---------- */ - case VIDIOC_ENUMSTD: - { - struct v4l2_standard *e = arg; - unsigned int i; - - 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; - } - case VIDIOC_G_STD: - { - v4l2_std_id *id = arg; - - *id = dev->tvnorm->id; - return 0; - } - case VIDIOC_S_STD: - { - v4l2_std_id *id = arg; - unsigned int i; - - 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; - - mutex_lock(&dev->lock); - dev->tvnorm = &tvnorms[i]; - - em28xx_set_norm(dev, dev->width, dev->height); - - em28xx_i2c_call_clients(dev, VIDIOC_S_STD, - &dev->tvnorm->id); - - mutex_unlock(&dev->lock); - - return 0; - } - - /* ------ 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; - - return 0; - } - case VIDIOC_S_INPUT: - { - int *index = arg; - - if (*index >= MAX_EM28XX_INPUT) - return -EINVAL; - if (0 == INPUT(*index)->type) - return -EINVAL; - - mutex_lock(&dev->lock); - video_mux(dev, *index); - mutex_unlock(&dev->lock); - - return 0; - } - case VIDIOC_G_AUDIO: - { - struct v4l2_audio *a = arg; - unsigned int index = a->index; - - 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"); - } - a->capability = V4L2_AUDCAP_STEREO; - a->index = index; - return 0; - } - case VIDIOC_S_AUDIO: - { - struct v4l2_audio *a = arg; - - if (a->index != dev->ctl_ainput) - return -EINVAL; - - return 0; - } - - /* --- 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; - } - } - } - mutex_lock(&dev->lock); - em28xx_i2c_call_clients(dev,cmd,qc); - mutex_unlock(&dev->lock); - if (qc->type) - return 0; - else - return -EINVAL; - } - 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); - 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; - } - } - } - - em28xx_i2c_call_clients(dev,cmd,arg); - mutex_unlock(&dev->lock); - return 0; - } - /* --- tuner ioctls ------------------------------------------ */ - case VIDIOC_G_TUNER: - { - struct v4l2_tuner *t = arg; - - if (0 != t->index) - return -EINVAL; - - 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); - mutex_unlock(&dev->lock); - em28xx_videodbg("VIDIO_G_TUNER: signal=%x, afc=%x\n", t->signal, - t->afc); - return 0; - } - 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); - mutex_unlock(&dev->lock); - return 0; - } - 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; - } - 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); - 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; - } - 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; - - if (unlikely(res_get(fh) < 0)) - return -EBUSY; - - dev->stream = STREAM_ON; /* FIXME: Start video capture here? */ - - em28xx_videodbg("VIDIOC_STREAMON: starting stream\n"); - - return 0; - } - case VIDIOC_STREAMOFF: - { - int *type = arg; - int 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"); - if ((ret = em28xx_stream_interrupt(dev))){ - mutex_unlock(&dev->lock); - return ret; - } - } - - em28xx_empty_framequeues(dev); - mutex_unlock(&dev->lock); - - return 0; - } - default: - return v4l_compat_translate_ioctl(inode, filp, cmd, arg, - driver_ioctl); - } - 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. - */ -static int em28xx_video_do_ioctl(struct inode *inode, struct file *filp, - unsigned int cmd, void *arg) -{ - struct em28xx_fh *fh = filp->private_data; - struct em28xx *dev = fh->dev; - - if (!dev) - return -ENODEV; - - 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; - - 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; - - } - 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; - } - - case VIDIOC_REQBUFS: - { - struct v4l2_requestbuffers *rb = arg; - u32 i; - int ret; - - if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || - rb->memory != V4L2_MEMORY_MMAP) - return -EINVAL; - - 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; - } - - 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; - } - } - - em28xx_empty_framequeues(dev); - - em28xx_release_buffers(dev); - if (rb->count) - rb->count = - em28xx_request_buffers(dev, rb->count); - - dev->frame_current = NULL; - - em28xx_videodbg ("VIDIOC_REQBUFS: setting io method to mmap: num bufs %i\n", - rb->count); - dev->io = rb->count ? IO_MMAP : IO_NONE; - mutex_unlock(&dev->lock); - return 0; - } - 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; - } - 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; - } - 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 (f->vma_use_count) - b->flags |= V4L2_BUF_FLAG_MAPPED; - - return 0; - } - default: - return em28xx_do_ioctl(inode, filp, dev, cmd, arg, - em28xx_video_do_ioctl); - } - 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; - } - - if (dev->state & DEV_MISCONFIGURED) { - em28xx_errdev - ("v4l2 ioctl: device is misconfigured; close and open it again\n"); - return -EIO; - } - - ret = video_usercopy(inode, filp, cmd, arg, em28xx_video_do_ioctl); - - return ret; -} - 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 *****************************************/ /* @@ -1639,7 +1731,7 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev, 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"); @@ -1647,7 +1739,17 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev, 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"); @@ -1656,41 +1758,27 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev, 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", @@ -1703,6 +1791,7 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev, 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"); @@ -1713,8 +1802,6 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev, 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", |