mirror of https://gitee.com/openkylin/linux.git
1247 lines
31 KiB
C
1247 lines
31 KiB
C
/*
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* Hauppauge HD PVR USB driver - video 4 linux 2 interface
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*
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* Copyright (C) 2008 Janne Grunau (j@jannau.net)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation, version 2.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/kconfig.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/uaccess.h>
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#include <linux/usb.h>
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#include <linux/mutex.h>
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#include <linux/workqueue.h>
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#include <linux/videodev2.h>
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#include <linux/v4l2-dv-timings.h>
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#include <media/v4l2-dev.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-dv-timings.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-event.h>
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#include "hdpvr.h"
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#define BULK_URB_TIMEOUT 90 /* 0.09 seconds */
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#define print_buffer_status() { \
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v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, \
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"%s:%d buffer stat: %d free, %d proc\n", \
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__func__, __LINE__, \
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list_size(&dev->free_buff_list), \
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list_size(&dev->rec_buff_list)); }
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static const struct v4l2_dv_timings hdpvr_dv_timings[] = {
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V4L2_DV_BT_CEA_720X480I59_94,
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V4L2_DV_BT_CEA_720X576I50,
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V4L2_DV_BT_CEA_720X480P59_94,
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V4L2_DV_BT_CEA_720X576P50,
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V4L2_DV_BT_CEA_1280X720P50,
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V4L2_DV_BT_CEA_1280X720P60,
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V4L2_DV_BT_CEA_1920X1080I50,
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V4L2_DV_BT_CEA_1920X1080I60,
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};
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/* Use 480i59 as the default timings */
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#define HDPVR_DEF_DV_TIMINGS_IDX (0)
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struct hdpvr_fh {
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struct v4l2_fh fh;
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bool legacy_mode;
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};
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static uint list_size(struct list_head *list)
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{
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struct list_head *tmp;
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uint count = 0;
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list_for_each(tmp, list) {
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count++;
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}
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return count;
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}
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/*=========================================================================*/
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/* urb callback */
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static void hdpvr_read_bulk_callback(struct urb *urb)
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{
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struct hdpvr_buffer *buf = (struct hdpvr_buffer *)urb->context;
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struct hdpvr_device *dev = buf->dev;
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/* marking buffer as received and wake waiting */
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buf->status = BUFSTAT_READY;
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wake_up_interruptible(&dev->wait_data);
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}
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/*=========================================================================*/
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/* buffer bits */
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/* function expects dev->io_mutex to be hold by caller */
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int hdpvr_cancel_queue(struct hdpvr_device *dev)
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{
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struct hdpvr_buffer *buf;
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list_for_each_entry(buf, &dev->rec_buff_list, buff_list) {
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usb_kill_urb(buf->urb);
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buf->status = BUFSTAT_AVAILABLE;
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}
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list_splice_init(&dev->rec_buff_list, dev->free_buff_list.prev);
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return 0;
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}
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static int hdpvr_free_queue(struct list_head *q)
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{
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struct list_head *tmp;
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struct list_head *p;
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struct hdpvr_buffer *buf;
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struct urb *urb;
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for (p = q->next; p != q;) {
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buf = list_entry(p, struct hdpvr_buffer, buff_list);
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urb = buf->urb;
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usb_free_coherent(urb->dev, urb->transfer_buffer_length,
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urb->transfer_buffer, urb->transfer_dma);
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usb_free_urb(urb);
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tmp = p->next;
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list_del(p);
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kfree(buf);
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p = tmp;
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}
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return 0;
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}
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/* function expects dev->io_mutex to be hold by caller */
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int hdpvr_free_buffers(struct hdpvr_device *dev)
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{
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hdpvr_cancel_queue(dev);
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hdpvr_free_queue(&dev->free_buff_list);
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hdpvr_free_queue(&dev->rec_buff_list);
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return 0;
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}
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/* function expects dev->io_mutex to be hold by caller */
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int hdpvr_alloc_buffers(struct hdpvr_device *dev, uint count)
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{
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uint i;
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int retval = -ENOMEM;
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u8 *mem;
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struct hdpvr_buffer *buf;
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struct urb *urb;
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v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
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"allocating %u buffers\n", count);
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for (i = 0; i < count; i++) {
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buf = kzalloc(sizeof(struct hdpvr_buffer), GFP_KERNEL);
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if (!buf) {
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v4l2_err(&dev->v4l2_dev, "cannot allocate buffer\n");
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goto exit;
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}
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buf->dev = dev;
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urb = usb_alloc_urb(0, GFP_KERNEL);
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if (!urb) {
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v4l2_err(&dev->v4l2_dev, "cannot allocate urb\n");
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goto exit_urb;
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}
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buf->urb = urb;
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mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL,
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&urb->transfer_dma);
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if (!mem) {
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v4l2_err(&dev->v4l2_dev,
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"cannot allocate usb transfer buffer\n");
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goto exit_urb_buffer;
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}
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usb_fill_bulk_urb(buf->urb, dev->udev,
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usb_rcvbulkpipe(dev->udev,
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dev->bulk_in_endpointAddr),
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mem, dev->bulk_in_size,
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hdpvr_read_bulk_callback, buf);
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buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
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buf->status = BUFSTAT_AVAILABLE;
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list_add_tail(&buf->buff_list, &dev->free_buff_list);
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}
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return 0;
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exit_urb_buffer:
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usb_free_urb(urb);
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exit_urb:
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kfree(buf);
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exit:
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hdpvr_free_buffers(dev);
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return retval;
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}
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static int hdpvr_submit_buffers(struct hdpvr_device *dev)
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{
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struct hdpvr_buffer *buf;
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struct urb *urb;
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int ret = 0, err_count = 0;
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mutex_lock(&dev->io_mutex);
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while (dev->status == STATUS_STREAMING &&
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!list_empty(&dev->free_buff_list)) {
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buf = list_entry(dev->free_buff_list.next, struct hdpvr_buffer,
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buff_list);
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if (buf->status != BUFSTAT_AVAILABLE) {
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v4l2_err(&dev->v4l2_dev,
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"buffer not marked as available\n");
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ret = -EFAULT;
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goto err;
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}
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urb = buf->urb;
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urb->status = 0;
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urb->actual_length = 0;
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ret = usb_submit_urb(urb, GFP_KERNEL);
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if (ret) {
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v4l2_err(&dev->v4l2_dev,
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"usb_submit_urb in %s returned %d\n",
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__func__, ret);
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if (++err_count > 2)
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break;
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continue;
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}
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buf->status = BUFSTAT_INPROGRESS;
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list_move_tail(&buf->buff_list, &dev->rec_buff_list);
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}
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err:
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print_buffer_status();
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mutex_unlock(&dev->io_mutex);
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return ret;
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}
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static struct hdpvr_buffer *hdpvr_get_next_buffer(struct hdpvr_device *dev)
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{
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struct hdpvr_buffer *buf;
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mutex_lock(&dev->io_mutex);
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if (list_empty(&dev->rec_buff_list)) {
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mutex_unlock(&dev->io_mutex);
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return NULL;
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}
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buf = list_entry(dev->rec_buff_list.next, struct hdpvr_buffer,
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buff_list);
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mutex_unlock(&dev->io_mutex);
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return buf;
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}
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static void hdpvr_transmit_buffers(struct work_struct *work)
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{
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struct hdpvr_device *dev = container_of(work, struct hdpvr_device,
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worker);
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while (dev->status == STATUS_STREAMING) {
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if (hdpvr_submit_buffers(dev)) {
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v4l2_err(&dev->v4l2_dev, "couldn't submit buffers\n");
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goto error;
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}
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if (wait_event_interruptible(dev->wait_buffer,
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!list_empty(&dev->free_buff_list) ||
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dev->status != STATUS_STREAMING))
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goto error;
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}
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v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
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"transmit worker exited\n");
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return;
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error:
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v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
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"transmit buffers errored\n");
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dev->status = STATUS_ERROR;
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}
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/* function expects dev->io_mutex to be hold by caller */
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static int hdpvr_start_streaming(struct hdpvr_device *dev)
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{
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int ret;
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struct hdpvr_video_info vidinf;
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if (dev->status == STATUS_STREAMING)
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return 0;
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if (dev->status != STATUS_IDLE)
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return -EAGAIN;
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ret = get_video_info(dev, &vidinf);
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if (ret < 0)
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return ret;
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if (!vidinf.valid) {
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msleep(250);
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v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
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"no video signal at input %d\n", dev->options.video_input);
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return -EAGAIN;
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}
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v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
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"video signal: %dx%d@%dhz\n", vidinf.width,
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vidinf.height, vidinf.fps);
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/* start streaming 2 request */
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ret = usb_control_msg(dev->udev,
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usb_sndctrlpipe(dev->udev, 0),
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0xb8, 0x38, 0x1, 0, NULL, 0, 8000);
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v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
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"encoder start control request returned %d\n", ret);
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if (ret < 0)
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return ret;
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ret = hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00);
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if (ret)
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return ret;
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dev->status = STATUS_STREAMING;
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INIT_WORK(&dev->worker, hdpvr_transmit_buffers);
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queue_work(dev->workqueue, &dev->worker);
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v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
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"streaming started\n");
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return 0;
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}
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/* function expects dev->io_mutex to be hold by caller */
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static int hdpvr_stop_streaming(struct hdpvr_device *dev)
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{
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int actual_length;
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uint c = 0;
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u8 *buf;
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if (dev->status == STATUS_IDLE)
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return 0;
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else if (dev->status != STATUS_STREAMING)
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return -EAGAIN;
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buf = kmalloc(dev->bulk_in_size, GFP_KERNEL);
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if (!buf)
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v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer "
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"for emptying the internal device buffer. "
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"Next capture start will be slow\n");
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dev->status = STATUS_SHUTTING_DOWN;
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hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00);
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mutex_unlock(&dev->io_mutex);
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wake_up_interruptible(&dev->wait_buffer);
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msleep(50);
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flush_workqueue(dev->workqueue);
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mutex_lock(&dev->io_mutex);
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/* kill the still outstanding urbs */
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hdpvr_cancel_queue(dev);
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/* emptying the device buffer beforeshutting it down */
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while (buf && ++c < 500 &&
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!usb_bulk_msg(dev->udev,
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usb_rcvbulkpipe(dev->udev,
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dev->bulk_in_endpointAddr),
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buf, dev->bulk_in_size, &actual_length,
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BULK_URB_TIMEOUT)) {
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v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
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"%2d: got %d bytes\n", c, actual_length);
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}
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kfree(buf);
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v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
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"used %d urbs to empty device buffers\n", c-1);
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msleep(10);
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dev->status = STATUS_IDLE;
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return 0;
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}
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|
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/*=======================================================================*/
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/*
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* video 4 linux 2 file operations
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*/
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static int hdpvr_open(struct file *file)
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{
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struct hdpvr_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL);
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if (fh == NULL)
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return -ENOMEM;
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fh->legacy_mode = true;
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v4l2_fh_init(&fh->fh, video_devdata(file));
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v4l2_fh_add(&fh->fh);
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file->private_data = fh;
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return 0;
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}
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static int hdpvr_release(struct file *file)
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{
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struct hdpvr_device *dev = video_drvdata(file);
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mutex_lock(&dev->io_mutex);
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if (file->private_data == dev->owner) {
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hdpvr_stop_streaming(dev);
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dev->owner = NULL;
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}
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mutex_unlock(&dev->io_mutex);
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return v4l2_fh_release(file);
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}
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|
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/*
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* hdpvr_v4l2_read()
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* will allocate buffers when called for the first time
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*/
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static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count,
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loff_t *pos)
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{
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struct hdpvr_device *dev = video_drvdata(file);
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struct hdpvr_buffer *buf = NULL;
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struct urb *urb;
|
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unsigned int ret = 0;
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int rem, cnt;
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|
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if (*pos)
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return -ESPIPE;
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|
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mutex_lock(&dev->io_mutex);
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if (dev->status == STATUS_IDLE) {
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if (hdpvr_start_streaming(dev)) {
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v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
|
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"start_streaming failed\n");
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ret = -EIO;
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msleep(200);
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dev->status = STATUS_IDLE;
|
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mutex_unlock(&dev->io_mutex);
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goto err;
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}
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dev->owner = file->private_data;
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print_buffer_status();
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}
|
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mutex_unlock(&dev->io_mutex);
|
|
|
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/* wait for the first buffer */
|
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if (!(file->f_flags & O_NONBLOCK)) {
|
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if (wait_event_interruptible(dev->wait_data,
|
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hdpvr_get_next_buffer(dev)))
|
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return -ERESTARTSYS;
|
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}
|
|
|
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buf = hdpvr_get_next_buffer(dev);
|
|
|
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while (count > 0 && buf) {
|
|
|
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if (buf->status != BUFSTAT_READY &&
|
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dev->status != STATUS_DISCONNECTED) {
|
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/* return nonblocking */
|
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if (file->f_flags & O_NONBLOCK) {
|
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if (!ret)
|
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ret = -EAGAIN;
|
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goto err;
|
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}
|
|
|
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if (wait_event_interruptible(dev->wait_data,
|
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buf->status == BUFSTAT_READY)) {
|
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ret = -ERESTARTSYS;
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goto err;
|
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}
|
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}
|
|
|
|
if (buf->status != BUFSTAT_READY)
|
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break;
|
|
|
|
/* set remaining bytes to copy */
|
|
urb = buf->urb;
|
|
rem = urb->actual_length - buf->pos;
|
|
cnt = rem > count ? count : rem;
|
|
|
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if (copy_to_user(buffer, urb->transfer_buffer + buf->pos,
|
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cnt)) {
|
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v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n");
|
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if (!ret)
|
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ret = -EFAULT;
|
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goto err;
|
|
}
|
|
|
|
buf->pos += cnt;
|
|
count -= cnt;
|
|
buffer += cnt;
|
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ret += cnt;
|
|
|
|
/* finished, take next buffer */
|
|
if (buf->pos == urb->actual_length) {
|
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mutex_lock(&dev->io_mutex);
|
|
buf->pos = 0;
|
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buf->status = BUFSTAT_AVAILABLE;
|
|
|
|
list_move_tail(&buf->buff_list, &dev->free_buff_list);
|
|
|
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print_buffer_status();
|
|
|
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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;
|
|
}
|