diff options
Diffstat (limited to 'drivers/media/video/au0828/au0828-video.c')
-rw-r--r-- | drivers/media/video/au0828/au0828-video.c | 443 |
1 files changed, 327 insertions, 116 deletions
diff --git a/drivers/media/video/au0828/au0828-video.c b/drivers/media/video/au0828/au0828-video.c index 52f25aabb6dc..7989a7ba7c40 100644 --- a/drivers/media/video/au0828/au0828-video.c +++ b/drivers/media/video/au0828/au0828-video.c @@ -314,6 +314,23 @@ static inline void buffer_filled(struct au0828_dev *dev, wake_up(&buf->vb.done); } +static inline void vbi_buffer_filled(struct au0828_dev *dev, + struct au0828_dmaqueue *dma_q, + struct au0828_buffer *buf) +{ + /* Advice that buffer was filled */ + au0828_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i); + + buf->vb.state = VIDEOBUF_DONE; + buf->vb.field_count++; + do_gettimeofday(&buf->vb.ts); + + dev->isoc_ctl.vbi_buf = NULL; + + list_del(&buf->vb.queue); + wake_up(&buf->vb.done); +} + /* * Identify the buffer header type and properly handles */ @@ -327,6 +344,9 @@ static void au0828_copy_video(struct au0828_dev *dev, int linesdone, currlinedone, offset, lencopy, remain; int bytesperline = dev->width << 1; /* Assumes 16-bit depth @@@@ */ + if (len == 0) + return; + if (dma_q->pos + len > buf->vb.size) len = buf->vb.size - dma_q->pos; @@ -414,17 +434,98 @@ static inline void get_next_buf(struct au0828_dmaqueue *dma_q, return; } +static void au0828_copy_vbi(struct au0828_dev *dev, + struct au0828_dmaqueue *dma_q, + struct au0828_buffer *buf, + unsigned char *p, + unsigned char *outp, unsigned long len) +{ + unsigned char *startwrite, *startread; + int bytesperline; + int i, j = 0; + + if (dev == NULL) { + au0828_isocdbg("dev is null\n"); + return; + } + + if (dma_q == NULL) { + au0828_isocdbg("dma_q is null\n"); + return; + } + if (buf == NULL) + return; + if (p == NULL) { + au0828_isocdbg("p is null\n"); + return; + } + if (outp == NULL) { + au0828_isocdbg("outp is null\n"); + return; + } + + bytesperline = dev->vbi_width; + + if (dma_q->pos + len > buf->vb.size) + len = buf->vb.size - dma_q->pos; + + startread = p; + startwrite = outp + (dma_q->pos / 2); + + /* Make sure the bottom field populates the second half of the frame */ + if (buf->top_field == 0) + startwrite += bytesperline * dev->vbi_height; + + for (i = 0; i < len; i += 2) + startwrite[j++] = startread[i+1]; + + dma_q->pos += len; +} + + +/* + * video-buf generic routine to get the next available VBI buffer + */ +static inline void vbi_get_next_buf(struct au0828_dmaqueue *dma_q, + struct au0828_buffer **buf) +{ + struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vbiq); + char *outp; + + if (list_empty(&dma_q->active)) { + au0828_isocdbg("No active queue to serve\n"); + dev->isoc_ctl.vbi_buf = NULL; + *buf = NULL; + return; + } + + /* Get the next buffer */ + *buf = list_entry(dma_q->active.next, struct au0828_buffer, vb.queue); + /* Cleans up buffer - Usefull for testing for frame/URB loss */ + outp = videobuf_to_vmalloc(&(*buf)->vb); + memset(outp, 0x00, (*buf)->vb.size); + + dev->isoc_ctl.vbi_buf = *buf; + + return; +} + /* * Controls the isoc copy of each urb packet */ static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb) { struct au0828_buffer *buf; + struct au0828_buffer *vbi_buf; struct au0828_dmaqueue *dma_q = urb->context; + struct au0828_dmaqueue *vbi_dma_q = &dev->vbiq; unsigned char *outp = NULL; + unsigned char *vbioutp = NULL; int i, len = 0, rc = 1; unsigned char *p; unsigned char fbyte; + unsigned int vbi_field_size; + unsigned int remain, lencopy; if (!dev) return 0; @@ -443,6 +544,10 @@ static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb) if (buf != NULL) outp = videobuf_to_vmalloc(&buf->vb); + vbi_buf = dev->isoc_ctl.vbi_buf; + if (vbi_buf != NULL) + vbioutp = videobuf_to_vmalloc(&vbi_buf->vb); + for (i = 0; i < urb->number_of_packets; i++) { int status = urb->iso_frame_desc[i].status; @@ -472,6 +577,19 @@ static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb) au0828_isocdbg("Video frame %s\n", (fbyte & 0x40) ? "odd" : "even"); if (!(fbyte & 0x40)) { + /* VBI */ + if (vbi_buf != NULL) + vbi_buffer_filled(dev, + vbi_dma_q, + vbi_buf); + vbi_get_next_buf(vbi_dma_q, &vbi_buf); + if (vbi_buf == NULL) + vbioutp = NULL; + else + vbioutp = videobuf_to_vmalloc( + &vbi_buf->vb); + + /* Video */ if (buf != NULL) buffer_filled(dev, dma_q, buf); get_next_buf(dma_q, &buf); @@ -488,9 +606,36 @@ static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb) buf->top_field = 0; } + if (vbi_buf != NULL) { + if (fbyte & 0x40) + vbi_buf->top_field = 1; + else + vbi_buf->top_field = 0; + } + + dev->vbi_read = 0; + vbi_dma_q->pos = 0; dma_q->pos = 0; } - if (buf != NULL) + + vbi_field_size = dev->vbi_width * dev->vbi_height * 2; + if (dev->vbi_read < vbi_field_size) { + remain = vbi_field_size - dev->vbi_read; + if (len < remain) + lencopy = len; + else + lencopy = remain; + + if (vbi_buf != NULL) + au0828_copy_vbi(dev, vbi_dma_q, vbi_buf, p, + vbioutp, len); + + len -= lencopy; + p += lencopy; + dev->vbi_read += lencopy; + } + + if (dev->vbi_read >= vbi_field_size && buf != NULL) au0828_copy_video(dev, dma_q, buf, p, outp, len); } return rc; @@ -642,7 +787,7 @@ int au0828_analog_stream_enable(struct au0828_dev *d) au0828_writereg(d, 0x114, 0xa0); au0828_writereg(d, 0x115, 0x05); /* set y position */ - au0828_writereg(d, 0x112, 0x02); + au0828_writereg(d, 0x112, 0x00); au0828_writereg(d, 0x113, 0x00); au0828_writereg(d, 0x116, 0xf2); au0828_writereg(d, 0x117, 0x00); @@ -703,47 +848,83 @@ void au0828_analog_unregister(struct au0828_dev *dev) /* Usage lock check functions */ -static int res_get(struct au0828_fh *fh) +static int res_get(struct au0828_fh *fh, unsigned int bit) { - struct au0828_dev *dev = fh->dev; - int rc = 0; + struct au0828_dev *dev = fh->dev; - /* This instance already has stream_on */ - if (fh->stream_on) - return rc; + if (fh->resources & bit) + /* have it already allocated */ + return 1; - if (dev->stream_on) - return -EBUSY; + /* is it free? */ + mutex_lock(&dev->lock); + if (dev->resources & bit) { + /* no, someone else uses it */ + mutex_unlock(&dev->lock); + return 0; + } + /* it's free, grab it */ + fh->resources |= bit; + dev->resources |= bit; + dprintk(1, "res: get %d\n", bit); + mutex_unlock(&dev->lock); + return 1; +} - dev->stream_on = 1; - fh->stream_on = 1; - return rc; +static int res_check(struct au0828_fh *fh, unsigned int bit) +{ + return fh->resources & bit; } -static int res_check(struct au0828_fh *fh) +static int res_locked(struct au0828_dev *dev, unsigned int bit) { - return fh->stream_on; + return dev->resources & bit; } -static void res_free(struct au0828_fh *fh) +static void res_free(struct au0828_fh *fh, unsigned int bits) { - struct au0828_dev *dev = fh->dev; + struct au0828_dev *dev = fh->dev; - fh->stream_on = 0; - dev->stream_on = 0; + BUG_ON((fh->resources & bits) != bits); + + mutex_lock(&dev->lock); + fh->resources &= ~bits; + dev->resources &= ~bits; + dprintk(1, "res: put %d\n", bits); + mutex_unlock(&dev->lock); +} + +static int get_ressource(struct au0828_fh *fh) +{ + switch (fh->type) { + case V4L2_BUF_TYPE_VIDEO_CAPTURE: + return AU0828_RESOURCE_VIDEO; + case V4L2_BUF_TYPE_VBI_CAPTURE: + return AU0828_RESOURCE_VBI; + default: + BUG(); + return 0; + } } static int au0828_v4l2_open(struct file *filp) { int ret = 0; + struct video_device *vdev = video_devdata(filp); struct au0828_dev *dev = video_drvdata(filp); struct au0828_fh *fh; - int type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + int type; -#ifdef VBI_IS_WORKING - if (video_devdata(filp)->vfl_type == VFL_TYPE_GRABBER) + switch (vdev->vfl_type) { + case VFL_TYPE_GRABBER: + type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + break; + case VFL_TYPE_VBI: type = V4L2_BUF_TYPE_VBI_CAPTURE; -#endif + break; + default: + return -EINVAL; + } fh = kzalloc(sizeof(struct au0828_fh), GFP_KERNEL); if (NULL == fh) { @@ -781,10 +962,21 @@ static int au0828_v4l2_open(struct file *filp) dev->users++; videobuf_queue_vmalloc_init(&fh->vb_vidq, &au0828_video_qops, - NULL, &dev->slock, fh->type, + NULL, &dev->slock, + V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_INTERLACED, sizeof(struct au0828_buffer), fh); + /* VBI Setup */ + dev->vbi_width = 720; + dev->vbi_height = 1; + videobuf_queue_vmalloc_init(&fh->vb_vbiq, &au0828_vbi_qops, + NULL, &dev->slock, + V4L2_BUF_TYPE_VBI_CAPTURE, + V4L2_FIELD_SEQ_TB, + sizeof(struct au0828_buffer), fh); + + return ret; } @@ -794,17 +986,19 @@ static int au0828_v4l2_close(struct file *filp) struct au0828_fh *fh = filp->private_data; struct au0828_dev *dev = fh->dev; - mutex_lock(&dev->lock); - if (res_check(fh)) - res_free(fh); - - if (dev->users == 1) { + if (res_check(fh, AU0828_RESOURCE_VIDEO)) { videobuf_stop(&fh->vb_vidq); - videobuf_mmap_free(&fh->vb_vidq); + res_free(fh, AU0828_RESOURCE_VIDEO); + } + + if (res_check(fh, AU0828_RESOURCE_VBI)) { + videobuf_stop(&fh->vb_vbiq); + res_free(fh, AU0828_RESOURCE_VBI); + } + if (dev->users == 1) { if (dev->dev_state & DEV_DISCONNECTED) { au0828_analog_unregister(dev); - mutex_unlock(&dev->lock); kfree(dev); return 0; } @@ -823,10 +1017,11 @@ static int au0828_v4l2_close(struct file *filp) printk(KERN_INFO "Au0828 can't set alternate to 0!\n"); } + videobuf_mmap_free(&fh->vb_vidq); + videobuf_mmap_free(&fh->vb_vbiq); kfree(fh); dev->users--; wake_up_interruptible_nr(&dev->open, 1); - mutex_unlock(&dev->lock); return 0; } @@ -842,16 +1037,21 @@ static ssize_t au0828_v4l2_read(struct file *filp, char __user *buf, return rc; if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { - mutex_lock(&dev->lock); - rc = res_get(fh); - mutex_unlock(&dev->lock); - - if (unlikely(rc < 0)) - return rc; + if (res_locked(dev, AU0828_RESOURCE_VIDEO)) + return -EBUSY; return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0, filp->f_flags & O_NONBLOCK); } + + if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { + if (!res_get(fh, AU0828_RESOURCE_VBI)) + return -EBUSY; + + return videobuf_read_stream(&fh->vb_vbiq, buf, count, pos, 0, + filp->f_flags & O_NONBLOCK); + } + return 0; } @@ -865,17 +1065,17 @@ static unsigned int au0828_v4l2_poll(struct file *filp, poll_table *wait) if (rc < 0) return rc; - mutex_lock(&dev->lock); - rc = res_get(fh); - mutex_unlock(&dev->lock); - - if (unlikely(rc < 0)) - return POLLERR; - - if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { + if (!res_get(fh, AU0828_RESOURCE_VIDEO)) + return POLLERR; + return videobuf_poll_stream(filp, &fh->vb_vidq, wait); + } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { + if (!res_get(fh, AU0828_RESOURCE_VBI)) + return POLLERR; + return videobuf_poll_stream(filp, &fh->vb_vbiq, wait); + } else { return POLLERR; - - return videobuf_poll_stream(filp, &fh->vb_vidq, wait); + } } static int au0828_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) @@ -888,14 +1088,10 @@ static int au0828_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) if (rc < 0) return rc; - mutex_lock(&dev->lock); - rc = res_get(fh); - mutex_unlock(&dev->lock); - - if (unlikely(rc < 0)) - return rc; - - rc = videobuf_mmap_mapper(&fh->vb_vidq, vma); + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + rc = videobuf_mmap_mapper(&fh->vb_vidq, vma); + else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) + rc = videobuf_mmap_mapper(&fh->vb_vbiq, vma); return rc; } @@ -911,14 +1107,6 @@ static int au0828_set_format(struct au0828_dev *dev, unsigned int cmd, maxwidth = 720; maxheight = 480; -#ifdef VBI_IS_WORKING - if (format->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) { - dprintk(1, "VBI format set: to be supported!\n"); - return 0; - } - if (format->type == V4L2_BUF_TYPE_VBI_CAPTURE) - return 0; -#endif if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; @@ -999,9 +1187,7 @@ static int vidioc_querycap(struct file *file, void *priv, /*set the device capabilities */ cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | -#ifdef VBI_IS_WORKING V4L2_CAP_VBI_CAPTURE | -#endif V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING | @@ -1056,20 +1242,21 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, struct au0828_dev *dev = fh->dev; int rc; + rc = check_dev(dev); + if (rc < 0) + return rc; + + mutex_lock(&dev->lock); + if (videobuf_queue_is_busy(&fh->vb_vidq)) { printk(KERN_INFO "%s queue busy\n", __func__); rc = -EBUSY; goto out; } - if (dev->stream_on && !fh->stream_on) { - printk(KERN_INFO "%s device in use by another fh\n", __func__); - rc = -EBUSY; - goto out; - } - - return au0828_set_format(dev, VIDIOC_S_FMT, f); + rc = au0828_set_format(dev, VIDIOC_S_FMT, f); out: + mutex_unlock(&dev->lock); return rc; } @@ -1300,6 +1487,29 @@ static int vidioc_s_frequency(struct file *file, void *priv, return 0; } + +/* RAW VBI ioctls */ + +static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, + struct v4l2_format *format) +{ + struct au0828_fh *fh = priv; + struct au0828_dev *dev = fh->dev; + + format->fmt.vbi.samples_per_line = dev->vbi_width; + format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; + format->fmt.vbi.offset = 0; + format->fmt.vbi.flags = 0; + format->fmt.vbi.sampling_rate = 6750000 * 4 / 2; + + format->fmt.vbi.count[0] = dev->vbi_height; + format->fmt.vbi.count[1] = dev->vbi_height; + format->fmt.vbi.start[0] = 21; + format->fmt.vbi.start[1] = 284; + + return 0; +} + static int vidioc_g_chip_ident(struct file *file, void *priv, struct v4l2_dbg_chip_ident *chip) { @@ -1345,25 +1555,32 @@ static int vidioc_cropcap(struct file *file, void *priv, static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type type) { - struct au0828_fh *fh = priv; - struct au0828_dev *dev = fh->dev; - int rc; + struct au0828_fh *fh = priv; + struct au0828_dev *dev = fh->dev; + int rc = -EINVAL; rc = check_dev(dev); if (rc < 0) return rc; + if (unlikely(type != fh->type)) + return -EINVAL; + + dprintk(1, "vidioc_streamon fh=%p t=%d fh->res=%d dev->res=%d\n", + fh, type, fh->resources, dev->resources); + + if (unlikely(!res_get(fh, get_ressource(fh)))) + return -EBUSY; + if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { au0828_analog_stream_enable(dev); v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 1); } - mutex_lock(&dev->lock); - rc = res_get(fh); - - if (likely(rc >= 0)) + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) rc = videobuf_streamon(&fh->vb_vidq); - mutex_unlock(&dev->lock); + else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) + rc = videobuf_streamon(&fh->vb_vbiq); return rc; } @@ -1371,38 +1588,42 @@ static int vidioc_streamon(struct file *file, void *priv, static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type type) { - struct au0828_fh *fh = priv; - struct au0828_dev *dev = fh->dev; - int i; - int ret; - int rc; + struct au0828_fh *fh = priv; + struct au0828_dev *dev = fh->dev; + int rc; + int i; rc = check_dev(dev); if (rc < 0) return rc; - if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && + fh->type != V4L2_BUF_TYPE_VBI_CAPTURE) return -EINVAL; if (type != fh->type) return -EINVAL; - if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { + dprintk(1, "vidioc_streamoff fh=%p t=%d fh->res=%d dev->res=%d\n", + fh, type, fh->resources, dev->resources); + + if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0); - ret = au0828_stream_interrupt(dev); - if (ret != 0) - return ret; - } + rc = au0828_stream_interrupt(dev); + if (rc != 0) + return rc; - for (i = 0; i < AU0828_MAX_INPUT; i++) { - if (AUVI_INPUT(i).audio_setup == NULL) - continue; - (AUVI_INPUT(i).audio_setup)(dev, 0); - } + for (i = 0; i < AU0828_MAX_INPUT; i++) { + if (AUVI_INPUT(i).audio_setup == NULL) + continue; + (AUVI_INPUT(i).audio_setup)(dev, 0); + } - mutex_lock(&dev->lock); - videobuf_streamoff(&fh->vb_vidq); - res_free(fh); - mutex_unlock(&dev->lock); + videobuf_streamoff(&fh->vb_vidq); + res_free(fh, AU0828_RESOURCE_VIDEO); + } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { + videobuf_streamoff(&fh->vb_vbiq); + res_free(fh, AU0828_RESOURCE_VBI); + } return 0; } @@ -1527,19 +1748,11 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = { .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, -#ifdef VBI_IS_WORKING .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, - .vidioc_try_fmt_vbi_cap = vidioc_s_fmt_vbi_cap, - .vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap, -#endif + .vidioc_s_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, .vidioc_g_audio = vidioc_g_audio, .vidioc_s_audio = vidioc_s_audio, .vidioc_cropcap = vidioc_cropcap, -#ifdef VBI_IS_WORKING - .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap, - .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap, - .vidioc_s_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap, -#endif .vidioc_reqbufs = vidioc_reqbufs, .vidioc_querybuf = vidioc_querybuf, .vidioc_qbuf = vidioc_qbuf, @@ -1621,8 +1834,11 @@ int au0828_analog_register(struct au0828_dev *dev, spin_lock_init(&dev->slock); mutex_init(&dev->lock); + /* init video dma queues */ INIT_LIST_HEAD(&dev->vidq.active); INIT_LIST_HEAD(&dev->vidq.queued); + INIT_LIST_HEAD(&dev->vbiq.active); + INIT_LIST_HEAD(&dev->vbiq.queued); dev->width = NTSC_STD_W; dev->height = NTSC_STD_H; @@ -1638,26 +1854,23 @@ int au0828_analog_register(struct au0828_dev *dev, return -ENOMEM; } -#ifdef VBI_IS_WORKING + /* allocate the VBI struct */ dev->vbi_dev = video_device_alloc(); if (NULL == dev->vbi_dev) { dprintk(1, "Can't allocate vbi_device.\n"); kfree(dev->vdev); return -ENOMEM; } -#endif /* Fill the video capture device struct */ *dev->vdev = au0828_video_template; dev->vdev->parent = &dev->usbdev->dev; strcpy(dev->vdev->name, "au0828a video"); -#ifdef VBI_IS_WORKING /* Setup the VBI device */ *dev->vbi_dev = au0828_video_template; dev->vbi_dev->parent = &dev->usbdev->dev; strcpy(dev->vbi_dev->name, "au0828a vbi"); -#endif /* Register the v4l2 device */ video_set_drvdata(dev->vdev, dev); @@ -1669,7 +1882,6 @@ int au0828_analog_register(struct au0828_dev *dev, return -ENODEV; } -#ifdef VBI_IS_WORKING /* Register the vbi device */ video_set_drvdata(dev->vbi_dev, dev); retval = video_register_device(dev->vbi_dev, VFL_TYPE_VBI, -1); @@ -1680,7 +1892,6 @@ int au0828_analog_register(struct au0828_dev *dev, video_device_release(dev->vdev); return -ENODEV; } -#endif dprintk(1, "%s completed!\n", __func__); |