diff options
Diffstat (limited to 'drivers/media/usb/hdpvr/hdpvr-video.c')
| -rw-r--r-- | drivers/media/usb/hdpvr/hdpvr-video.c | 1253 |
1 files changed, 1253 insertions, 0 deletions
diff --git a/drivers/media/usb/hdpvr/hdpvr-video.c b/drivers/media/usb/hdpvr/hdpvr-video.c new file mode 100644 index 000000000..fd7d2a9d0 --- /dev/null +++ b/drivers/media/usb/hdpvr/hdpvr-video.c @@ -0,0 +1,1253 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Hauppauge HD PVR USB driver - video 4 linux 2 interface + * + * Copyright (C) 2008 Janne Grunau (j@jannau.net) + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/uaccess.h> +#include <linux/usb.h> +#include <linux/mutex.h> +#include <linux/workqueue.h> + +#include <linux/videodev2.h> +#include <linux/v4l2-dv-timings.h> +#include <media/v4l2-dev.h> +#include <media/v4l2-common.h> +#include <media/v4l2-dv-timings.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-event.h> +#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; + + 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; + 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, + !list_empty_careful(&dev->rec_buff_list))) + 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_info(&dev->v4l2_dev, + "timeout: restart streaming\n"); + mutex_lock(&dev->io_mutex); + hdpvr_stop_streaming(dev); + mutex_unlock(&dev->io_mutex); + /* + * The FW needs about 4 seconds after streaming + * stopped before it is ready to restart + * streaming. + */ + msleep(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); + + strscpy(cap->driver, "hdpvr", sizeof(cap->driver)); + strscpy(cap->card, "Hauppauge HD PVR", sizeof(cap->card)); + usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); + 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; + + strscpy(i->name, iname[n], sizeof(i->name)); + + i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF; + + i->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; + + strscpy(audio->name, audio_iname[n], sizeof(audio->name)); + + 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; + strscpy(audio->name, audio_iname[audio->index], sizeof(audio->name)); + 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->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); + flush_work(&dev->worker); + + 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, + .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO | + V4L2_CAP_READWRITE, +}; + +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; + + // initialize dev->worker + INIT_WORK(&dev->worker, hdpvr_transmit_buffers); + + 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; + strscpy(dev->video_dev.name, "Hauppauge HD PVR", + sizeof(dev->video_dev.name)); + dev->video_dev.v4l2_dev = &dev->v4l2_dev; + video_set_drvdata(&dev->video_dev, dev); + + res = video_register_device(&dev->video_dev, VFL_TYPE_VIDEO, 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; +} |