/* * Hauppauge HD PVR USB driver - video 4 linux 2 interface * * Copyright (C) 2008 Janne Grunau (j@jannau.net) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation, version 2. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "hdpvr.h" #define BULK_URB_TIMEOUT 90 /* 0.09 seconds */ #define print_buffer_status() { \ v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, \ "%s:%d buffer stat: %d free, %d proc\n", \ __func__, __LINE__, \ list_size(&dev->free_buff_list), \ list_size(&dev->rec_buff_list)); } static const struct v4l2_dv_timings hdpvr_dv_timings[] = { V4L2_DV_BT_CEA_720X480I59_94, V4L2_DV_BT_CEA_720X576I50, V4L2_DV_BT_CEA_720X480P59_94, V4L2_DV_BT_CEA_720X576P50, V4L2_DV_BT_CEA_1280X720P50, V4L2_DV_BT_CEA_1280X720P60, V4L2_DV_BT_CEA_1920X1080I50, V4L2_DV_BT_CEA_1920X1080I60, }; /* Use 480i59 as the default timings */ #define HDPVR_DEF_DV_TIMINGS_IDX (0) struct hdpvr_fh { struct v4l2_fh fh; bool legacy_mode; }; static uint list_size(struct list_head *list) { struct list_head *tmp; uint count = 0; list_for_each(tmp, list) { count++; } return count; } /*=========================================================================*/ /* urb callback */ static void hdpvr_read_bulk_callback(struct urb *urb) { struct hdpvr_buffer *buf = (struct hdpvr_buffer *)urb->context; struct hdpvr_device *dev = buf->dev; /* marking buffer as received and wake waiting */ buf->status = BUFSTAT_READY; wake_up_interruptible(&dev->wait_data); } /*=========================================================================*/ /* buffer bits */ /* function expects dev->io_mutex to be hold by caller */ int hdpvr_cancel_queue(struct hdpvr_device *dev) { struct hdpvr_buffer *buf; list_for_each_entry(buf, &dev->rec_buff_list, buff_list) { usb_kill_urb(buf->urb); buf->status = BUFSTAT_AVAILABLE; } list_splice_init(&dev->rec_buff_list, dev->free_buff_list.prev); return 0; } static int hdpvr_free_queue(struct list_head *q) { struct list_head *tmp; struct list_head *p; struct hdpvr_buffer *buf; struct urb *urb; for (p = q->next; p != q;) { buf = list_entry(p, struct hdpvr_buffer, buff_list); urb = buf->urb; usb_free_coherent(urb->dev, urb->transfer_buffer_length, urb->transfer_buffer, urb->transfer_dma); usb_free_urb(urb); tmp = p->next; list_del(p); kfree(buf); p = tmp; } return 0; } /* function expects dev->io_mutex to be hold by caller */ int hdpvr_free_buffers(struct hdpvr_device *dev) { hdpvr_cancel_queue(dev); hdpvr_free_queue(&dev->free_buff_list); hdpvr_free_queue(&dev->rec_buff_list); return 0; } /* function expects dev->io_mutex to be hold by caller */ int hdpvr_alloc_buffers(struct hdpvr_device *dev, uint count) { uint i; int retval = -ENOMEM; u8 *mem; struct hdpvr_buffer *buf; struct urb *urb; v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, "allocating %u buffers\n", count); for (i = 0; i < count; i++) { buf = kzalloc(sizeof(struct hdpvr_buffer), GFP_KERNEL); if (!buf) { v4l2_err(&dev->v4l2_dev, "cannot allocate buffer\n"); goto exit; } buf->dev = dev; urb = usb_alloc_urb(0, GFP_KERNEL); if (!urb) goto exit_urb; buf->urb = urb; mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL, &urb->transfer_dma); if (!mem) { v4l2_err(&dev->v4l2_dev, "cannot allocate usb transfer buffer\n"); goto exit_urb_buffer; } usb_fill_bulk_urb(buf->urb, dev->udev, usb_rcvbulkpipe(dev->udev, dev->bulk_in_endpointAddr), mem, dev->bulk_in_size, hdpvr_read_bulk_callback, buf); buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; buf->status = BUFSTAT_AVAILABLE; list_add_tail(&buf->buff_list, &dev->free_buff_list); } return 0; exit_urb_buffer: usb_free_urb(urb); exit_urb: kfree(buf); exit: hdpvr_free_buffers(dev); return retval; } static int hdpvr_submit_buffers(struct hdpvr_device *dev) { struct hdpvr_buffer *buf; struct urb *urb; int ret = 0, err_count = 0; mutex_lock(&dev->io_mutex); while (dev->status == STATUS_STREAMING && !list_empty(&dev->free_buff_list)) { buf = list_entry(dev->free_buff_list.next, struct hdpvr_buffer, buff_list); if (buf->status != BUFSTAT_AVAILABLE) { v4l2_err(&dev->v4l2_dev, "buffer not marked as available\n"); ret = -EFAULT; goto err; } urb = buf->urb; urb->status = 0; urb->actual_length = 0; ret = usb_submit_urb(urb, GFP_KERNEL); if (ret) { v4l2_err(&dev->v4l2_dev, "usb_submit_urb in %s returned %d\n", __func__, ret); if (++err_count > 2) break; continue; } buf->status = BUFSTAT_INPROGRESS; list_move_tail(&buf->buff_list, &dev->rec_buff_list); } err: print_buffer_status(); mutex_unlock(&dev->io_mutex); return ret; } static struct hdpvr_buffer *hdpvr_get_next_buffer(struct hdpvr_device *dev) { struct hdpvr_buffer *buf; mutex_lock(&dev->io_mutex); if (list_empty(&dev->rec_buff_list)) { mutex_unlock(&dev->io_mutex); return NULL; } buf = list_entry(dev->rec_buff_list.next, struct hdpvr_buffer, buff_list); mutex_unlock(&dev->io_mutex); return buf; } static void hdpvr_transmit_buffers(struct work_struct *work) { struct hdpvr_device *dev = container_of(work, struct hdpvr_device, worker); while (dev->status == STATUS_STREAMING) { if (hdpvr_submit_buffers(dev)) { v4l2_err(&dev->v4l2_dev, "couldn't submit buffers\n"); goto error; } if (wait_event_interruptible(dev->wait_buffer, !list_empty(&dev->free_buff_list) || dev->status != STATUS_STREAMING)) goto error; } v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, "transmit worker exited\n"); return; error: v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, "transmit buffers errored\n"); dev->status = STATUS_ERROR; } /* function expects dev->io_mutex to be hold by caller */ static int hdpvr_start_streaming(struct hdpvr_device *dev) { int ret; struct hdpvr_video_info vidinf; if (dev->status == STATUS_STREAMING) return 0; if (dev->status != STATUS_IDLE) return -EAGAIN; ret = get_video_info(dev, &vidinf); if (ret < 0) return ret; if (!vidinf.valid) { msleep(250); v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, "no video signal at input %d\n", dev->options.video_input); return -EAGAIN; } v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, "video signal: %dx%d@%dhz\n", vidinf.width, vidinf.height, vidinf.fps); /* start streaming 2 request */ ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), 0xb8, 0x38, 0x1, 0, NULL, 0, 8000); v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, "encoder start control request returned %d\n", ret); if (ret < 0) return ret; ret = hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00); if (ret) return ret; dev->status = STATUS_STREAMING; INIT_WORK(&dev->worker, hdpvr_transmit_buffers); schedule_work(&dev->worker); v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, "streaming started\n"); return 0; } /* function expects dev->io_mutex to be hold by caller */ static int hdpvr_stop_streaming(struct hdpvr_device *dev) { int actual_length; uint c = 0; u8 *buf; if (dev->status == STATUS_IDLE) return 0; else if (dev->status != STATUS_STREAMING) return -EAGAIN; buf = kmalloc(dev->bulk_in_size, GFP_KERNEL); if (!buf) v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer for emptying the internal device buffer. Next capture start will be slow\n"); dev->status = STATUS_SHUTTING_DOWN; hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00); mutex_unlock(&dev->io_mutex); wake_up_interruptible(&dev->wait_buffer); msleep(50); flush_work(&dev->worker); mutex_lock(&dev->io_mutex); /* kill the still outstanding urbs */ hdpvr_cancel_queue(dev); /* emptying the device buffer beforeshutting it down */ while (buf && ++c < 500 && !usb_bulk_msg(dev->udev, usb_rcvbulkpipe(dev->udev, dev->bulk_in_endpointAddr), buf, dev->bulk_in_size, &actual_length, BULK_URB_TIMEOUT)) { v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, "%2d: got %d bytes\n", c, actual_length); } kfree(buf); v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, "used %d urbs to empty device buffers\n", c-1); msleep(10); dev->status = STATUS_IDLE; return 0; } /*=======================================================================*/ /* * video 4 linux 2 file operations */ static int hdpvr_open(struct file *file) { struct hdpvr_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL); if (fh == NULL) return -ENOMEM; fh->legacy_mode = true; v4l2_fh_init(&fh->fh, video_devdata(file)); v4l2_fh_add(&fh->fh); file->private_data = fh; return 0; } static int hdpvr_release(struct file *file) { struct hdpvr_device *dev = video_drvdata(file); mutex_lock(&dev->io_mutex); if (file->private_data == dev->owner) { hdpvr_stop_streaming(dev); dev->owner = NULL; } mutex_unlock(&dev->io_mutex); return v4l2_fh_release(file); } /* * hdpvr_v4l2_read() * will allocate buffers when called for the first time */ static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count, loff_t *pos) { struct hdpvr_device *dev = video_drvdata(file); struct hdpvr_buffer *buf = NULL; struct urb *urb; unsigned int ret = 0; int rem, cnt; if (*pos) return -ESPIPE; mutex_lock(&dev->io_mutex); if (dev->status == STATUS_IDLE) { if (hdpvr_start_streaming(dev)) { v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, "start_streaming failed\n"); ret = -EIO; msleep(200); dev->status = STATUS_IDLE; mutex_unlock(&dev->io_mutex); goto err; } dev->owner = file->private_data; print_buffer_status(); } mutex_unlock(&dev->io_mutex); /* wait for the first buffer */ if (!(file->f_flags & O_NONBLOCK)) { if (wait_event_interruptible(dev->wait_data, hdpvr_get_next_buffer(dev))) return -ERESTARTSYS; } buf = hdpvr_get_next_buffer(dev); while (count > 0 && buf) { if (buf->status != BUFSTAT_READY && dev->status != STATUS_DISCONNECTED) { int err; /* return nonblocking */ if (file->f_flags & O_NONBLOCK) { if (!ret) ret = -EAGAIN; goto err; } err = wait_event_interruptible_timeout(dev->wait_data, buf->status == BUFSTAT_READY, msecs_to_jiffies(1000)); if (err < 0) { ret = err; goto err; } if (!err) { v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, "timeout: restart streaming\n"); hdpvr_stop_streaming(dev); msecs_to_jiffies(4000); err = hdpvr_start_streaming(dev); if (err) { ret = err; goto err; } } } if (buf->status != BUFSTAT_READY) break; /* set remaining bytes to copy */ urb = buf->urb; rem = urb->actual_length - buf->pos; cnt = rem > count ? count : rem; if (copy_to_user(buffer, urb->transfer_buffer + buf->pos, cnt)) { v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n"); if (!ret) ret = -EFAULT; goto err; } buf->pos += cnt; count -= cnt; buffer += cnt; ret += cnt; /* finished, take next buffer */ if (buf->pos == urb->actual_length) { mutex_lock(&dev->io_mutex); buf->pos = 0; buf->status = BUFSTAT_AVAILABLE; list_move_tail(&buf->buff_list, &dev->free_buff_list); print_buffer_status(); mutex_unlock(&dev->io_mutex); wake_up_interruptible(&dev->wait_buffer); buf = hdpvr_get_next_buffer(dev); } } err: if (!ret && !buf) ret = -EAGAIN; return ret; } static __poll_t hdpvr_poll(struct file *filp, poll_table *wait) { __poll_t req_events = poll_requested_events(wait); struct hdpvr_buffer *buf = NULL; struct hdpvr_device *dev = video_drvdata(filp); __poll_t mask = v4l2_ctrl_poll(filp, wait); if (!(req_events & (EPOLLIN | EPOLLRDNORM))) return mask; mutex_lock(&dev->io_mutex); if (dev->status == STATUS_IDLE) { if (hdpvr_start_streaming(dev)) { v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, "start_streaming failed\n"); dev->status = STATUS_IDLE; } else { dev->owner = filp->private_data; } print_buffer_status(); } mutex_unlock(&dev->io_mutex); buf = hdpvr_get_next_buffer(dev); /* only wait if no data is available */ if (!buf || buf->status != BUFSTAT_READY) { poll_wait(filp, &dev->wait_data, wait); buf = hdpvr_get_next_buffer(dev); } if (buf && buf->status == BUFSTAT_READY) mask |= EPOLLIN | EPOLLRDNORM; return mask; } static const struct v4l2_file_operations hdpvr_fops = { .owner = THIS_MODULE, .open = hdpvr_open, .release = hdpvr_release, .read = hdpvr_read, .poll = hdpvr_poll, .unlocked_ioctl = video_ioctl2, }; /*=======================================================================*/ /* * V4L2 ioctl handling */ static int vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { struct hdpvr_device *dev = video_drvdata(file); strcpy(cap->driver, "hdpvr"); strcpy(cap->card, "Hauppauge HD PVR"); usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE; cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; return 0; } static int vidioc_s_std(struct file *file, void *_fh, v4l2_std_id std) { struct hdpvr_device *dev = video_drvdata(file); struct hdpvr_fh *fh = _fh; u8 std_type = 1; if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) return -ENODATA; if (dev->status != STATUS_IDLE) return -EBUSY; if (std & V4L2_STD_525_60) std_type = 0; dev->cur_std = std; dev->width = 720; dev->height = std_type ? 576 : 480; return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type); } static int vidioc_g_std(struct file *file, void *_fh, v4l2_std_id *std) { struct hdpvr_device *dev = video_drvdata(file); struct hdpvr_fh *fh = _fh; if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) return -ENODATA; *std = dev->cur_std; return 0; } static int vidioc_querystd(struct file *file, void *_fh, v4l2_std_id *a) { struct hdpvr_device *dev = video_drvdata(file); struct hdpvr_video_info vid_info; struct hdpvr_fh *fh = _fh; int ret; *a = V4L2_STD_UNKNOWN; if (dev->options.video_input == HDPVR_COMPONENT) return fh->legacy_mode ? 0 : -ENODATA; ret = get_video_info(dev, &vid_info); if (vid_info.valid && vid_info.width == 720 && (vid_info.height == 480 || vid_info.height == 576)) { *a = (vid_info.height == 480) ? V4L2_STD_525_60 : V4L2_STD_625_50; } return ret; } static int vidioc_s_dv_timings(struct file *file, void *_fh, struct v4l2_dv_timings *timings) { struct hdpvr_device *dev = video_drvdata(file); struct hdpvr_fh *fh = _fh; int i; fh->legacy_mode = false; if (dev->options.video_input) return -ENODATA; if (dev->status != STATUS_IDLE) return -EBUSY; for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) if (v4l2_match_dv_timings(timings, hdpvr_dv_timings + i, 0, false)) break; if (i == ARRAY_SIZE(hdpvr_dv_timings)) return -EINVAL; dev->cur_dv_timings = hdpvr_dv_timings[i]; dev->width = hdpvr_dv_timings[i].bt.width; dev->height = hdpvr_dv_timings[i].bt.height; return 0; } static int vidioc_g_dv_timings(struct file *file, void *_fh, struct v4l2_dv_timings *timings) { struct hdpvr_device *dev = video_drvdata(file); struct hdpvr_fh *fh = _fh; fh->legacy_mode = false; if (dev->options.video_input) return -ENODATA; *timings = dev->cur_dv_timings; return 0; } static int vidioc_query_dv_timings(struct file *file, void *_fh, struct v4l2_dv_timings *timings) { struct hdpvr_device *dev = video_drvdata(file); struct hdpvr_fh *fh = _fh; struct hdpvr_video_info vid_info; bool interlaced; int ret = 0; int i; fh->legacy_mode = false; if (dev->options.video_input) return -ENODATA; ret = get_video_info(dev, &vid_info); if (ret) return ret; if (!vid_info.valid) return -ENOLCK; interlaced = vid_info.fps <= 30; for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) { const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt; unsigned hsize; unsigned vsize; unsigned fps; hsize = V4L2_DV_BT_FRAME_WIDTH(bt); vsize = V4L2_DV_BT_FRAME_HEIGHT(bt); fps = (unsigned)bt->pixelclock / (hsize * vsize); if (bt->width != vid_info.width || bt->height != vid_info.height || bt->interlaced != interlaced || (fps != vid_info.fps && fps + 1 != vid_info.fps)) continue; *timings = hdpvr_dv_timings[i]; break; } if (i == ARRAY_SIZE(hdpvr_dv_timings)) ret = -ERANGE; return ret; } static int vidioc_enum_dv_timings(struct file *file, void *_fh, struct v4l2_enum_dv_timings *timings) { struct hdpvr_device *dev = video_drvdata(file); struct hdpvr_fh *fh = _fh; fh->legacy_mode = false; memset(timings->reserved, 0, sizeof(timings->reserved)); if (dev->options.video_input) return -ENODATA; if (timings->index >= ARRAY_SIZE(hdpvr_dv_timings)) return -EINVAL; timings->timings = hdpvr_dv_timings[timings->index]; return 0; } static int vidioc_dv_timings_cap(struct file *file, void *_fh, struct v4l2_dv_timings_cap *cap) { struct hdpvr_device *dev = video_drvdata(file); struct hdpvr_fh *fh = _fh; fh->legacy_mode = false; if (dev->options.video_input) return -ENODATA; cap->type = V4L2_DV_BT_656_1120; cap->bt.min_width = 720; cap->bt.max_width = 1920; cap->bt.min_height = 480; cap->bt.max_height = 1080; cap->bt.min_pixelclock = 27000000; cap->bt.max_pixelclock = 74250000; cap->bt.standards = V4L2_DV_BT_STD_CEA861; cap->bt.capabilities = V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE; return 0; } static const char *iname[] = { [HDPVR_COMPONENT] = "Component", [HDPVR_SVIDEO] = "S-Video", [HDPVR_COMPOSITE] = "Composite", }; static int vidioc_enum_input(struct file *file, void *_fh, struct v4l2_input *i) { unsigned int n; n = i->index; if (n >= HDPVR_VIDEO_INPUTS) return -EINVAL; i->type = V4L2_INPUT_TYPE_CAMERA; strncpy(i->name, iname[n], sizeof(i->name) - 1); i->name[sizeof(i->name) - 1] = '\0'; i->audioset = 1<capabilities = n ? V4L2_IN_CAP_STD : V4L2_IN_CAP_DV_TIMINGS; i->std = n ? V4L2_STD_ALL : 0; return 0; } static int vidioc_s_input(struct file *file, void *_fh, unsigned int index) { struct hdpvr_device *dev = video_drvdata(file); int retval; if (index >= HDPVR_VIDEO_INPUTS) return -EINVAL; if (dev->status != STATUS_IDLE) return -EBUSY; retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1); if (!retval) { dev->options.video_input = index; /* * Unfortunately gstreamer calls ENUMSTD and bails out if it * won't find any formats, even though component input is * selected. This means that we have to leave tvnorms at * V4L2_STD_ALL. We cannot use the 'legacy' trick since * tvnorms is set at the device node level and not at the * filehandle level. * * Comment this out for now, but if the legacy mode can be * removed in the future, then this code should be enabled * again. dev->video_dev.tvnorms = (index != HDPVR_COMPONENT) ? V4L2_STD_ALL : 0; */ } return retval; } static int vidioc_g_input(struct file *file, void *private_data, unsigned int *index) { struct hdpvr_device *dev = video_drvdata(file); *index = dev->options.video_input; return 0; } static const char *audio_iname[] = { [HDPVR_RCA_FRONT] = "RCA front", [HDPVR_RCA_BACK] = "RCA back", [HDPVR_SPDIF] = "SPDIF", }; static int vidioc_enumaudio(struct file *file, void *priv, struct v4l2_audio *audio) { unsigned int n; n = audio->index; if (n >= HDPVR_AUDIO_INPUTS) return -EINVAL; audio->capability = V4L2_AUDCAP_STEREO; strncpy(audio->name, audio_iname[n], sizeof(audio->name) - 1); audio->name[sizeof(audio->name) - 1] = '\0'; return 0; } static int vidioc_s_audio(struct file *file, void *private_data, const struct v4l2_audio *audio) { struct hdpvr_device *dev = video_drvdata(file); int retval; if (audio->index >= HDPVR_AUDIO_INPUTS) return -EINVAL; if (dev->status != STATUS_IDLE) return -EBUSY; retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec); if (!retval) dev->options.audio_input = audio->index; return retval; } static int vidioc_g_audio(struct file *file, void *private_data, struct v4l2_audio *audio) { struct hdpvr_device *dev = video_drvdata(file); audio->index = dev->options.audio_input; audio->capability = V4L2_AUDCAP_STEREO; strncpy(audio->name, audio_iname[audio->index], sizeof(audio->name)); audio->name[sizeof(audio->name) - 1] = '\0'; return 0; } static int hdpvr_try_ctrl(struct v4l2_ctrl *ctrl) { struct hdpvr_device *dev = container_of(ctrl->handler, struct hdpvr_device, hdl); switch (ctrl->id) { case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR && dev->video_bitrate->val >= dev->video_bitrate_peak->val) dev->video_bitrate_peak->val = dev->video_bitrate->val + 100000; break; } return 0; } static int hdpvr_s_ctrl(struct v4l2_ctrl *ctrl) { struct hdpvr_device *dev = container_of(ctrl->handler, struct hdpvr_device, hdl); struct hdpvr_options *opt = &dev->options; int ret = -EINVAL; switch (ctrl->id) { case V4L2_CID_BRIGHTNESS: ret = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->val); if (ret) break; dev->options.brightness = ctrl->val; return 0; case V4L2_CID_CONTRAST: ret = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->val); if (ret) break; dev->options.contrast = ctrl->val; return 0; case V4L2_CID_SATURATION: ret = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->val); if (ret) break; dev->options.saturation = ctrl->val; return 0; case V4L2_CID_HUE: ret = hdpvr_config_call(dev, CTRL_HUE, ctrl->val); if (ret) break; dev->options.hue = ctrl->val; return 0; case V4L2_CID_SHARPNESS: ret = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->val); if (ret) break; dev->options.sharpness = ctrl->val; return 0; case V4L2_CID_MPEG_AUDIO_ENCODING: if (dev->flags & HDPVR_FLAG_AC3_CAP) { opt->audio_codec = ctrl->val; return hdpvr_set_audio(dev, opt->audio_input + 1, opt->audio_codec); } return 0; case V4L2_CID_MPEG_VIDEO_ENCODING: return 0; /* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */ /* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */ /* opt->gop_mode |= 0x2; */ /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ /* opt->gop_mode); */ /* } */ /* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */ /* opt->gop_mode &= ~0x2; */ /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ /* opt->gop_mode); */ /* } */ /* break; */ case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: { uint peak_bitrate = dev->video_bitrate_peak->val / 100000; uint bitrate = dev->video_bitrate->val / 100000; if (ctrl->is_new) { if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR) opt->bitrate_mode = HDPVR_CONSTANT; else opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE; hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE, opt->bitrate_mode); v4l2_ctrl_activate(dev->video_bitrate_peak, ctrl->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); } if (dev->video_bitrate_peak->is_new || dev->video_bitrate->is_new) { opt->bitrate = bitrate; opt->peak_bitrate = peak_bitrate; hdpvr_set_bitrate(dev); } return 0; } case V4L2_CID_MPEG_STREAM_TYPE: return 0; default: break; } return ret; } static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data, struct v4l2_fmtdesc *f) { if (f->index != 0) return -EINVAL; f->flags = V4L2_FMT_FLAG_COMPRESSED; strncpy(f->description, "MPEG2-TS with AVC/AAC streams", 32); f->pixelformat = V4L2_PIX_FMT_MPEG; return 0; } static int vidioc_g_fmt_vid_cap(struct file *file, void *_fh, struct v4l2_format *f) { struct hdpvr_device *dev = video_drvdata(file); struct hdpvr_fh *fh = _fh; int ret; /* * The original driver would always returns the current detected * resolution as the format (and EFAULT if it couldn't be detected). * With the introduction of VIDIOC_QUERY_DV_TIMINGS there is now a * better way of doing this, but to stay compatible with existing * applications we assume legacy mode every time an application opens * the device. Only if one of the new DV_TIMINGS ioctls is called * will the filehandle go into 'normal' mode where g_fmt returns the * last set format. */ if (fh->legacy_mode) { struct hdpvr_video_info vid_info; ret = get_video_info(dev, &vid_info); if (ret < 0) return ret; if (!vid_info.valid) return -EFAULT; f->fmt.pix.width = vid_info.width; f->fmt.pix.height = vid_info.height; } else { f->fmt.pix.width = dev->width; f->fmt.pix.height = dev->height; } f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; f->fmt.pix.sizeimage = dev->bulk_in_size; f->fmt.pix.bytesperline = 0; if (f->fmt.pix.width == 720) { /* SDTV formats */ f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; f->fmt.pix.field = V4L2_FIELD_INTERLACED; } else { /* HDTV formats */ f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709; f->fmt.pix.field = V4L2_FIELD_NONE; } return 0; } static int vidioc_encoder_cmd(struct file *filp, void *priv, struct v4l2_encoder_cmd *a) { struct hdpvr_device *dev = video_drvdata(filp); int res = 0; mutex_lock(&dev->io_mutex); a->flags = 0; switch (a->cmd) { case V4L2_ENC_CMD_START: if (dev->owner && filp->private_data != dev->owner) { res = -EBUSY; break; } if (dev->status == STATUS_STREAMING) break; res = hdpvr_start_streaming(dev); if (!res) dev->owner = filp->private_data; else dev->status = STATUS_IDLE; break; case V4L2_ENC_CMD_STOP: if (dev->owner && filp->private_data != dev->owner) { res = -EBUSY; break; } if (dev->status == STATUS_IDLE) break; res = hdpvr_stop_streaming(dev); if (!res) dev->owner = NULL; break; default: v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, "Unsupported encoder cmd %d\n", a->cmd); res = -EINVAL; break; } mutex_unlock(&dev->io_mutex); return res; } static int vidioc_try_encoder_cmd(struct file *filp, void *priv, struct v4l2_encoder_cmd *a) { a->flags = 0; switch (a->cmd) { case V4L2_ENC_CMD_START: case V4L2_ENC_CMD_STOP: return 0; default: return -EINVAL; } } static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = { .vidioc_querycap = vidioc_querycap, .vidioc_s_std = vidioc_s_std, .vidioc_g_std = vidioc_g_std, .vidioc_querystd = vidioc_querystd, .vidioc_s_dv_timings = vidioc_s_dv_timings, .vidioc_g_dv_timings = vidioc_g_dv_timings, .vidioc_query_dv_timings= vidioc_query_dv_timings, .vidioc_enum_dv_timings = vidioc_enum_dv_timings, .vidioc_dv_timings_cap = vidioc_dv_timings_cap, .vidioc_enum_input = vidioc_enum_input, .vidioc_g_input = vidioc_g_input, .vidioc_s_input = vidioc_s_input, .vidioc_enumaudio = vidioc_enumaudio, .vidioc_g_audio = vidioc_g_audio, .vidioc_s_audio = vidioc_s_audio, .vidioc_enum_fmt_vid_cap= vidioc_enum_fmt_vid_cap, .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, .vidioc_s_fmt_vid_cap = vidioc_g_fmt_vid_cap, .vidioc_try_fmt_vid_cap = vidioc_g_fmt_vid_cap, .vidioc_encoder_cmd = vidioc_encoder_cmd, .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd, .vidioc_log_status = v4l2_ctrl_log_status, .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, .vidioc_unsubscribe_event = v4l2_event_unsubscribe, }; static void hdpvr_device_release(struct video_device *vdev) { struct hdpvr_device *dev = video_get_drvdata(vdev); hdpvr_delete(dev); mutex_lock(&dev->io_mutex); flush_work(&dev->worker); mutex_unlock(&dev->io_mutex); v4l2_device_unregister(&dev->v4l2_dev); v4l2_ctrl_handler_free(&dev->hdl); /* deregister I2C adapter */ #if IS_ENABLED(CONFIG_I2C) mutex_lock(&dev->i2c_mutex); i2c_del_adapter(&dev->i2c_adapter); mutex_unlock(&dev->i2c_mutex); #endif /* CONFIG_I2C */ kfree(dev->usbc_buf); kfree(dev); } static const struct video_device hdpvr_video_template = { .fops = &hdpvr_fops, .release = hdpvr_device_release, .ioctl_ops = &hdpvr_ioctl_ops, .tvnorms = V4L2_STD_ALL, }; static const struct v4l2_ctrl_ops hdpvr_ctrl_ops = { .try_ctrl = hdpvr_try_ctrl, .s_ctrl = hdpvr_s_ctrl, }; int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent, int devnum) { struct v4l2_ctrl_handler *hdl = &dev->hdl; bool ac3 = dev->flags & HDPVR_FLAG_AC3_CAP; int res; dev->cur_std = V4L2_STD_525_60; dev->width = 720; dev->height = 480; dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX]; v4l2_ctrl_handler_init(hdl, 11); if (dev->fw_ver > 0x15) { v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x80); v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x40); v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x40); v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, V4L2_CID_HUE, 0x0, 0x1e, 1, 0xf); v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); } else { v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x86); v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x80); v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x80); v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, V4L2_CID_HUE, 0x0, 0xff, 1, 0x80); v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); } v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, V4L2_CID_MPEG_STREAM_TYPE, V4L2_MPEG_STREAM_TYPE_MPEG2_TS, 0x1, V4L2_MPEG_STREAM_TYPE_MPEG2_TS); v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, V4L2_CID_MPEG_AUDIO_ENCODING, ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : V4L2_MPEG_AUDIO_ENCODING_AAC, 0x7, ac3 ? dev->options.audio_codec : V4L2_MPEG_AUDIO_ENCODING_AAC); v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, V4L2_CID_MPEG_VIDEO_ENCODING, V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 0x3, V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC); dev->video_mode = v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, V4L2_CID_MPEG_VIDEO_BITRATE_MODE, V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0, V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); dev->video_bitrate = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, V4L2_CID_MPEG_VIDEO_BITRATE, 1000000, 13500000, 100000, 6500000); dev->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, V4L2_CID_MPEG_VIDEO_BITRATE_PEAK, 1100000, 20200000, 100000, 9000000); dev->v4l2_dev.ctrl_handler = hdl; if (hdl->error) { res = hdl->error; v4l2_err(&dev->v4l2_dev, "Could not register controls\n"); goto error; } v4l2_ctrl_cluster(3, &dev->video_mode); res = v4l2_ctrl_handler_setup(hdl); if (res < 0) { v4l2_err(&dev->v4l2_dev, "Could not setup controls\n"); goto error; } /* setup and register video device */ dev->video_dev = hdpvr_video_template; strcpy(dev->video_dev.name, "Hauppauge HD PVR"); dev->video_dev.v4l2_dev = &dev->v4l2_dev; video_set_drvdata(&dev->video_dev, dev); res = video_register_device(&dev->video_dev, VFL_TYPE_GRABBER, devnum); if (res < 0) { v4l2_err(&dev->v4l2_dev, "video_device registration failed\n"); goto error; } return 0; error: v4l2_ctrl_handler_free(hdl); return res; }