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path: root/drivers/media/usb/hdpvr/hdpvr-video.c
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Diffstat (limited to 'drivers/media/usb/hdpvr/hdpvr-video.c')
-rw-r--r--drivers/media/usb/hdpvr/hdpvr-video.c1246
1 files changed, 1246 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..d8d8c0f51
--- /dev/null
+++ b/drivers/media/usb/hdpvr/hdpvr-video.c
@@ -0,0 +1,1246 @@
+/*
+ * 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 <linux/kernel.h>
+#include <linux/kconfig.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) {
+ v4l2_err(&dev->v4l2_dev, "cannot allocate urb\n");
+ 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);
+ queue_work(dev->workqueue, &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_workqueue(dev->workqueue);
+
+ 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) {
+ /* return nonblocking */
+ if (file->f_flags & O_NONBLOCK) {
+ if (!ret)
+ ret = -EAGAIN;
+ goto err;
+ }
+
+ if (wait_event_interruptible(dev->wait_data,
+ buf->status == BUFSTAT_READY)) {
+ ret = -ERESTARTSYS;
+ 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 unsigned int hdpvr_poll(struct file *filp, poll_table *wait)
+{
+ unsigned long req_events = poll_requested_events(wait);
+ struct hdpvr_buffer *buf = NULL;
+ struct hdpvr_device *dev = video_drvdata(filp);
+ unsigned int mask = v4l2_ctrl_poll(filp, wait);
+
+ if (!(req_events & (POLLIN | POLLRDNORM)))
+ 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 |= POLLIN | POLLRDNORM;
+
+ 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))
+ 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<<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;
+
+ 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);
+ destroy_workqueue(dev->workqueue);
+ 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;
+}