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gerrit-public.fairphone.software / kernel / msm-4.9 / c868d550115b9ccc0027c67265b9520790f05601 / . / drivers / media / video / au0828 / au0828-video.c
blob: 27bedc6c779114da92758f7efb494fa3ca6582f0 [file] [log] [blame]
/*
* Auvitek AU0828 USB Bridge (Analog video support)
*
* Copyright (C) 2009 Devin Heitmueller <dheitmueller@linuxtv.org>
* Copyright (C) 2005-2008 Auvitek International, Ltd.
*
* 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; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/* Developer Notes:
*
* VBI support is not yet working
* The hardware scaler supported is unimplemented
* AC97 audio support is unimplemented (only i2s audio mode)
*
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/suspend.h>
#include <linux/version.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-chip-ident.h>
#include <media/tuner.h>
#include "au0828.h"
#include "au0828-reg.h"
static LIST_HEAD(au0828_devlist);
static DEFINE_MUTEX(au0828_sysfs_lock);
#define AU0828_VERSION_CODE KERNEL_VERSION(0, 0, 1)
/* ------------------------------------------------------------------
Videobuf operations
------------------------------------------------------------------*/
static unsigned int isoc_debug;
module_param(isoc_debug, int, 0644);
MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
#define au0828_isocdbg(fmt, arg...) \
do {\
if (isoc_debug) { \
printk(KERN_INFO "au0828 %s :"fmt, \
__func__ , ##arg); \
} \
} while (0)
static inline void print_err_status(struct au0828_dev *dev,
int packet, int status)
{
char *errmsg = "Unknown";
switch (status) {
case -ENOENT:
errmsg = "unlinked synchronuously";
break;
case -ECONNRESET:
errmsg = "unlinked asynchronuously";
break;
case -ENOSR:
errmsg = "Buffer error (overrun)";
break;
case -EPIPE:
errmsg = "Stalled (device not responding)";
break;
case -EOVERFLOW:
errmsg = "Babble (bad cable?)";
break;
case -EPROTO:
errmsg = "Bit-stuff error (bad cable?)";
break;
case -EILSEQ:
errmsg = "CRC/Timeout (could be anything)";
break;
case -ETIME:
errmsg = "Device does not respond";
break;
}
if (packet < 0) {
au0828_isocdbg("URB status %d [%s].\n", status, errmsg);
} else {
au0828_isocdbg("URB packet %d, status %d [%s].\n",
packet, status, errmsg);
}
}
static int check_dev(struct au0828_dev *dev)
{
if (dev->dev_state & DEV_DISCONNECTED) {
printk(KERN_INFO "v4l2 ioctl: device not present\n");
return -ENODEV;
}
if (dev->dev_state & DEV_MISCONFIGURED) {
printk(KERN_INFO "v4l2 ioctl: device is misconfigured; "
"close and open it again\n");
return -EIO;
}
return 0;
}
/*
* IRQ callback, called by URB callback
*/
static void au0828_irq_callback(struct urb *urb)
{
struct au0828_dmaqueue *dma_q = urb->context;
struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
int rc, i;
switch (urb->status) {
case 0: /* success */
case -ETIMEDOUT: /* NAK */
break;
case -ECONNRESET: /* kill */
case -ENOENT:
case -ESHUTDOWN:
au0828_isocdbg("au0828_irq_callback called: status kill\n");
return;
default: /* unknown error */
au0828_isocdbg("urb completition error %d.\n", urb->status);
break;
}
/* Copy data from URB */
spin_lock(&dev->slock);
rc = dev->isoc_ctl.isoc_copy(dev, urb);
spin_unlock(&dev->slock);
/* Reset urb buffers */
for (i = 0; i < urb->number_of_packets; i++) {
urb->iso_frame_desc[i].status = 0;
urb->iso_frame_desc[i].actual_length = 0;
}
urb->status = 0;
urb->status = usb_submit_urb(urb, GFP_ATOMIC);
if (urb->status) {
au0828_isocdbg("urb resubmit failed (error=%i)\n",
urb->status);
}
}
/*
* Stop and Deallocate URBs
*/
void au0828_uninit_isoc(struct au0828_dev *dev)
{
struct urb *urb;
int i;
au0828_isocdbg("au0828: called au0828_uninit_isoc\n");
dev->isoc_ctl.nfields = -1;
for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
urb = dev->isoc_ctl.urb[i];
if (urb) {
if (!irqs_disabled())
usb_kill_urb(urb);
else
usb_unlink_urb(urb);
if (dev->isoc_ctl.transfer_buffer[i]) {
usb_buffer_free(dev->usbdev,
urb->transfer_buffer_length,
dev->isoc_ctl.transfer_buffer[i],
urb->transfer_dma);
}
usb_free_urb(urb);
dev->isoc_ctl.urb[i] = NULL;
}
dev->isoc_ctl.transfer_buffer[i] = NULL;
}
kfree(dev->isoc_ctl.urb);
kfree(dev->isoc_ctl.transfer_buffer);
dev->isoc_ctl.urb = NULL;
dev->isoc_ctl.transfer_buffer = NULL;
dev->isoc_ctl.num_bufs = 0;
}
/*
* Allocate URBs and start IRQ
*/
int au0828_init_isoc(struct au0828_dev *dev, int max_packets,
int num_bufs, int max_pkt_size,
int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb))
{
struct au0828_dmaqueue *dma_q = &dev->vidq;
int i;
int sb_size, pipe;
struct urb *urb;
int j, k;
int rc;
au0828_isocdbg("au0828: called au0828_prepare_isoc\n");
/* De-allocates all pending stuff */
au0828_uninit_isoc(dev);
dev->isoc_ctl.isoc_copy = isoc_copy;
dev->isoc_ctl.num_bufs = num_bufs;
dev->isoc_ctl.urb = kzalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
if (!dev->isoc_ctl.urb) {
au0828_isocdbg("cannot alloc memory for usb buffers\n");
return -ENOMEM;
}
dev->isoc_ctl.transfer_buffer = kzalloc(sizeof(void *)*num_bufs,
GFP_KERNEL);
if (!dev->isoc_ctl.transfer_buffer) {
au0828_isocdbg("cannot allocate memory for usb transfer\n");
kfree(dev->isoc_ctl.urb);
return -ENOMEM;
}
dev->isoc_ctl.max_pkt_size = max_pkt_size;
dev->isoc_ctl.buf = NULL;
sb_size = max_packets * dev->isoc_ctl.max_pkt_size;
/* allocate urbs and transfer buffers */
for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
urb = usb_alloc_urb(max_packets, GFP_KERNEL);
if (!urb) {
au0828_isocdbg("cannot alloc isoc_ctl.urb %i\n", i);
au0828_uninit_isoc(dev);
return -ENOMEM;
}
dev->isoc_ctl.urb[i] = urb;
dev->isoc_ctl.transfer_buffer[i] = usb_buffer_alloc(dev->usbdev,
sb_size, GFP_KERNEL, &urb->transfer_dma);
if (!dev->isoc_ctl.transfer_buffer[i]) {
printk("unable to allocate %i bytes for transfer"
" buffer %i%s\n",
sb_size, i,
in_interrupt() ? " while in int" : "");
au0828_uninit_isoc(dev);
return -ENOMEM;
}
memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
pipe = usb_rcvisocpipe(dev->usbdev,
dev->isoc_in_endpointaddr),
usb_fill_int_urb(urb, dev->usbdev, pipe,
dev->isoc_ctl.transfer_buffer[i], sb_size,
au0828_irq_callback, dma_q, 1);
urb->number_of_packets = max_packets;
urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
k = 0;
for (j = 0; j < max_packets; j++) {
urb->iso_frame_desc[j].offset = k;
urb->iso_frame_desc[j].length =
dev->isoc_ctl.max_pkt_size;
k += dev->isoc_ctl.max_pkt_size;
}
}
init_waitqueue_head(&dma_q->wq);
/* submit urbs and enables IRQ */
for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
if (rc) {
au0828_isocdbg("submit of urb %i failed (error=%i)\n",
i, rc);
au0828_uninit_isoc(dev);
return rc;
}
}
return 0;
}
/*
* Announces that a buffer were filled and request the next
*/
static inline void buffer_filled(struct au0828_dev *dev,
struct au0828_dmaqueue *dma_q,
struct au0828_buffer *buf)
{
/* Advice that buffer was filled */
au0828_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
buf->vb.state = VIDEOBUF_DONE;
buf->vb.field_count++;
do_gettimeofday(&buf->vb.ts);
dev->isoc_ctl.buf = NULL;
list_del(&buf->vb.queue);
wake_up(&buf->vb.done);
}
/*
* Identify the buffer header type and properly handles
*/
static void au0828_copy_video(struct au0828_dev *dev,
struct au0828_dmaqueue *dma_q,
struct au0828_buffer *buf,
unsigned char *p,
unsigned char *outp, unsigned long len)
{
void *fieldstart, *startwrite, *startread;
int linesdone, currlinedone, offset, lencopy, remain;
int bytesperline = dev->width << 1; /* Assumes 16-bit depth @@@@ */
if (dma_q->pos + len > buf->vb.size)
len = buf->vb.size - dma_q->pos;
startread = p;
remain = len;
/* Interlaces frame */
if (buf->top_field)
fieldstart = outp;
else
fieldstart = outp + bytesperline;
linesdone = dma_q->pos / bytesperline;
currlinedone = dma_q->pos % bytesperline;
offset = linesdone * bytesperline * 2 + currlinedone;
startwrite = fieldstart + offset;
lencopy = bytesperline - currlinedone;
lencopy = lencopy > remain ? remain : lencopy;
if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
au0828_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
((char *)startwrite + lencopy) -
((char *)outp + buf->vb.size));
remain = (char *)outp + buf->vb.size - (char *)startwrite;
lencopy = remain;
}
if (lencopy <= 0)
return;
memcpy(startwrite, startread, lencopy);
remain -= lencopy;
while (remain > 0) {
startwrite += lencopy + bytesperline;
startread += lencopy;
if (bytesperline > remain)
lencopy = remain;
else
lencopy = bytesperline;
if ((char *)startwrite + lencopy > (char *)outp +
buf->vb.size) {
au0828_isocdbg("Overflow %zi bytes past buf end (2)\n",
((char *)startwrite + lencopy) -
((char *)outp + buf->vb.size));
lencopy = remain = (char *)outp + buf->vb.size -
(char *)startwrite;
}
if (lencopy <= 0)
break;
memcpy(startwrite, startread, lencopy);
remain -= lencopy;
}
if (offset > 1440) {
/* We have enough data to check for greenscreen */
if (outp[0] < 0x60 && outp[1440] < 0x60)
dev->greenscreen_detected = 1;
}
dma_q->pos += len;
}
/*
* video-buf generic routine to get the next available buffer
*/
static inline void get_next_buf(struct au0828_dmaqueue *dma_q,
struct au0828_buffer **buf)
{
struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
if (list_empty(&dma_q->active)) {
au0828_isocdbg("No active queue to serve\n");
dev->isoc_ctl.buf = NULL;
*buf = NULL;
return;
}
/* Get the next buffer */
*buf = list_entry(dma_q->active.next, struct au0828_buffer, vb.queue);
dev->isoc_ctl.buf = *buf;
return;
}
/*
* Controls the isoc copy of each urb packet
*/
static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb)
{
struct au0828_buffer *buf;
struct au0828_dmaqueue *dma_q = urb->context;
unsigned char *outp = NULL;
int i, len = 0, rc = 1;
unsigned char *p;
unsigned char fbyte;
if (!dev)
return 0;
if ((dev->dev_state & DEV_DISCONNECTED) ||
(dev->dev_state & DEV_MISCONFIGURED))
return 0;
if (urb->status < 0) {
print_err_status(dev, -1, urb->status);
if (urb->status == -ENOENT)
return 0;
}
buf = dev->isoc_ctl.buf;
if (buf != NULL)
outp = videobuf_to_vmalloc(&buf->vb);
for (i = 0; i < urb->number_of_packets; i++) {
int status = urb->iso_frame_desc[i].status;
if (status < 0) {
print_err_status(dev, i, status);
if (urb->iso_frame_desc[i].status != -EPROTO)
continue;
}
if (urb->iso_frame_desc[i].actual_length <= 0)
continue;
if (urb->iso_frame_desc[i].actual_length >
dev->max_pkt_size) {
au0828_isocdbg("packet bigger than packet size");
continue;
}
p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
fbyte = p[0];
len = urb->iso_frame_desc[i].actual_length - 4;
p += 4;
if (fbyte & 0x80) {
len -= 4;
p += 4;
au0828_isocdbg("Video frame %s\n",
(fbyte & 0x40) ? "odd" : "even");
if (!(fbyte & 0x40)) {
if (buf != NULL)
buffer_filled(dev, dma_q, buf);
get_next_buf(dma_q, &buf);
if (buf == NULL)
outp = NULL;
else
outp = videobuf_to_vmalloc(&buf->vb);
}
if (buf != NULL) {
if (fbyte & 0x40)
buf->top_field = 1;
else
buf->top_field = 0;
}
dma_q->pos = 0;
}
if (buf != NULL)
au0828_copy_video(dev, dma_q, buf, p, outp, len);
}
return rc;
}
static int
buffer_setup(struct videobuf_queue *vq, unsigned int *count,
unsigned int *size)
{
struct au0828_fh *fh = vq->priv_data;
*size = (fh->dev->width * fh->dev->height * 16 + 7) >> 3;
if (0 == *count)
*count = AU0828_DEF_BUF;
if (*count < AU0828_MIN_BUF)
*count = AU0828_MIN_BUF;
return 0;
}
/* This is called *without* dev->slock held; please keep it that way */
static void free_buffer(struct videobuf_queue *vq, struct au0828_buffer *buf)
{
struct au0828_fh *fh = vq->priv_data;
struct au0828_dev *dev = fh->dev;
unsigned long flags = 0;
if (in_interrupt())
BUG();
/* We used to wait for the buffer to finish here, but this didn't work
because, as we were keeping the state as VIDEOBUF_QUEUED,
videobuf_queue_cancel marked it as finished for us.
(Also, it could wedge forever if the hardware was misconfigured.)
This should be safe; by the time we get here, the buffer isn't
queued anymore. If we ever start marking the buffers as
VIDEOBUF_ACTIVE, it won't be, though.
*/
spin_lock_irqsave(&dev->slock, flags);
if (dev->isoc_ctl.buf == buf)
dev->isoc_ctl.buf = NULL;
spin_unlock_irqrestore(&dev->slock, flags);
videobuf_vmalloc_free(&buf->vb);
buf->vb.state = VIDEOBUF_NEEDS_INIT;
}
static int
buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
enum v4l2_field field)
{
struct au0828_fh *fh = vq->priv_data;
struct au0828_buffer *buf = container_of(vb, struct au0828_buffer, vb);
struct au0828_dev *dev = fh->dev;
int rc = 0, urb_init = 0;
buf->vb.size = (fh->dev->width * fh->dev->height * 16 + 7) >> 3;
if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
return -EINVAL;
buf->vb.width = dev->width;
buf->vb.height = dev->height;
buf->vb.field = field;
if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
rc = videobuf_iolock(vq, &buf->vb, NULL);
if (rc < 0) {
printk(KERN_INFO "videobuf_iolock failed\n");
goto fail;
}
}
if (!dev->isoc_ctl.num_bufs)
urb_init = 1;
if (urb_init) {
rc = au0828_init_isoc(dev, AU0828_ISO_PACKETS_PER_URB,
AU0828_MAX_ISO_BUFS, dev->max_pkt_size,
au0828_isoc_copy);
if (rc < 0) {
printk(KERN_INFO "au0828_init_isoc failed\n");
goto fail;
}
}
buf->vb.state = VIDEOBUF_PREPARED;
return 0;
fail:
free_buffer(vq, buf);
return rc;
}
static void
buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
{
struct au0828_buffer *buf = container_of(vb,
struct au0828_buffer,
vb);
struct au0828_fh *fh = vq->priv_data;
struct au0828_dev *dev = fh->dev;
struct au0828_dmaqueue *vidq = &dev->vidq;
buf->vb.state = VIDEOBUF_QUEUED;
list_add_tail(&buf->vb.queue, &vidq->active);
}
static void buffer_release(struct videobuf_queue *vq,
struct videobuf_buffer *vb)
{
struct au0828_buffer *buf = container_of(vb,
struct au0828_buffer,
vb);
free_buffer(vq, buf);
}
static struct videobuf_queue_ops au0828_video_qops = {
.buf_setup = buffer_setup,
.buf_prepare = buffer_prepare,
.buf_queue = buffer_queue,
.buf_release = buffer_release,
};
/* ------------------------------------------------------------------
V4L2 interface
------------------------------------------------------------------*/
static int au0828_i2s_init(struct au0828_dev *dev)
{
/* Enable i2s mode */
au0828_writereg(dev, AU0828_AUDIOCTRL_50C, 0x01);
return 0;
}
/*
* Auvitek au0828 analog stream enable
* Please set interface0 to AS5 before enable the stream
*/
int au0828_analog_stream_enable(struct au0828_dev *d)
{
dprintk(1, "au0828_analog_stream_enable called\n");
au0828_writereg(d, AU0828_SENSORCTRL_VBI_103, 0x00);
au0828_writereg(d, 0x106, 0x00);
/* set x position */
au0828_writereg(d, 0x110, 0x00);
au0828_writereg(d, 0x111, 0x00);
au0828_writereg(d, 0x114, 0xa0);
au0828_writereg(d, 0x115, 0x05);
/* set y position */
au0828_writereg(d, 0x112, 0x02);
au0828_writereg(d, 0x113, 0x00);
au0828_writereg(d, 0x116, 0xf2);
au0828_writereg(d, 0x117, 0x00);
au0828_writereg(d, AU0828_SENSORCTRL_100, 0xb3);
return 0;
}
int au0828_analog_stream_disable(struct au0828_dev *d)
{
dprintk(1, "au0828_analog_stream_disable called\n");
au0828_writereg(d, AU0828_SENSORCTRL_100, 0x0);
return 0;
}
void au0828_analog_stream_reset(struct au0828_dev *dev)
{
dprintk(1, "au0828_analog_stream_reset called\n");
au0828_writereg(dev, AU0828_SENSORCTRL_100, 0x0);
mdelay(30);
au0828_writereg(dev, AU0828_SENSORCTRL_100, 0xb3);
}
/*
* Some operations needs to stop current streaming
*/
static int au0828_stream_interrupt(struct au0828_dev *dev)
{
int ret = 0;
dev->stream_state = STREAM_INTERRUPT;
if (dev->dev_state == DEV_DISCONNECTED)
return -ENODEV;
else if (ret) {
dev->dev_state = DEV_MISCONFIGURED;
dprintk(1, "%s device is misconfigured!\n", __func__);
return ret;
}
return 0;
}
/*
* au0828_release_resources
* unregister v4l2 devices
*/
void au0828_analog_unregister(struct au0828_dev *dev)
{
dprintk(1, "au0828_release_resources called\n");
mutex_lock(&au0828_sysfs_lock);
if (dev->vdev) {
list_del(&dev->au0828list);
video_unregister_device(dev->vdev);
}
if (dev->vbi_dev)
video_unregister_device(dev->vbi_dev);
mutex_unlock(&au0828_sysfs_lock);
}
/* Usage lock check functions */
static int res_get(struct au0828_fh *fh)
{
struct au0828_dev *dev = fh->dev;
int rc = 0;
/* This instance already has stream_on */
if (fh->stream_on)
return rc;
if (dev->stream_on)
return -EBUSY;
dev->stream_on = 1;
fh->stream_on = 1;
return rc;
}
static int res_check(struct au0828_fh *fh)
{
return fh->stream_on;
}
static void res_free(struct au0828_fh *fh)
{
struct au0828_dev *dev = fh->dev;
fh->stream_on = 0;
dev->stream_on = 0;
}
static int au0828_v4l2_open(struct file *filp)
{
int minor = video_devdata(filp)->minor;
int ret = 0;
struct au0828_dev *h, *dev = NULL;
struct au0828_fh *fh;
int type = 0;
struct list_head *list;
list_for_each(list, &au0828_devlist) {
h = list_entry(list, struct au0828_dev, au0828list);
if (h->vdev->minor == minor) {
dev = h;
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
}
#ifdef VBI_IS_WORKING
if (h->vbi_dev->minor == minor) {
dev = h;
type = V4L2_BUF_TYPE_VBI_CAPTURE;
}
#endif
}
if (NULL == dev)
return -ENODEV;
fh = kzalloc(sizeof(struct au0828_fh), GFP_KERNEL);
if (NULL == fh) {
dprintk(1, "Failed allocate au0828_fh struct!\n");
return -ENOMEM;
}
fh->type = type;
fh->dev = dev;
filp->private_data = fh;
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
/* set au0828 interface0 to AS5 here again */
ret = usb_set_interface(dev->usbdev, 0, 5);
if (ret < 0) {
printk(KERN_INFO "Au0828 can't set alternate to 5!\n");
return -EBUSY;
}
dev->width = NTSC_STD_W;
dev->height = NTSC_STD_H;
dev->frame_size = dev->width * dev->height * 2;
dev->field_size = dev->width * dev->height;
dev->bytesperline = dev->width * 2;
au0828_analog_stream_enable(dev);
au0828_analog_stream_reset(dev);
/* If we were doing ac97 instead of i2s, it would go here...*/
au0828_i2s_init(dev);
dev->stream_state = STREAM_OFF;
dev->dev_state |= DEV_INITIALIZED;
}
dev->users++;
videobuf_queue_vmalloc_init(&fh->vb_vidq, &au0828_video_qops,
NULL, &dev->slock, fh->type,
V4L2_FIELD_INTERLACED,
sizeof(struct au0828_buffer), fh);
return ret;
}
static int au0828_v4l2_close(struct file *filp)
{
int ret;
struct au0828_fh *fh = filp->private_data;
struct au0828_dev *dev = fh->dev;
mutex_lock(&dev->lock);
if (res_check(fh))
res_free(fh);
if (dev->users == 1) {
videobuf_stop(&fh->vb_vidq);
videobuf_mmap_free(&fh->vb_vidq);
if (dev->dev_state & DEV_DISCONNECTED) {
au0828_analog_unregister(dev);
mutex_unlock(&dev->lock);
kfree(dev);
return 0;
}
au0828_analog_stream_disable(dev);
au0828_uninit_isoc(dev);
/* When close the device, set the usb intf0 into alt0 to free
USB bandwidth */
ret = usb_set_interface(dev->usbdev, 0, 0);
if (ret < 0)
printk(KERN_INFO "Au0828 can't set alternate to 0!\n");
}
kfree(fh);
dev->users--;
wake_up_interruptible_nr(&dev->open, 1);
mutex_unlock(&dev->lock);
return 0;
}
static ssize_t au0828_v4l2_read(struct file *filp, char __user *buf,
size_t count, loff_t *pos)
{
struct au0828_fh *fh = filp->private_data;
struct au0828_dev *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
mutex_lock(&dev->lock);
rc = res_get(fh);
mutex_unlock(&dev->lock);
if (unlikely(rc < 0))
return rc;
return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
filp->f_flags & O_NONBLOCK);
}
return 0;
}
static unsigned int au0828_v4l2_poll(struct file *filp, poll_table *wait)
{
struct au0828_fh *fh = filp->private_data;
struct au0828_dev *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
mutex_lock(&dev->lock);
rc = res_get(fh);
mutex_unlock(&dev->lock);
if (unlikely(rc < 0))
return POLLERR;
if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
return POLLERR;
return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
}
static int au0828_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
{
struct au0828_fh *fh = filp->private_data;
struct au0828_dev *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
mutex_lock(&dev->lock);
rc = res_get(fh);
mutex_unlock(&dev->lock);
if (unlikely(rc < 0))
return rc;
rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
dprintk(2, "vma start=0x%08lx, size=%ld, ret=%d\n",
(unsigned long)vma->vm_start,
(unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
rc);
return rc;
}
static int au0828_set_format(struct au0828_dev *dev, unsigned int cmd,
struct v4l2_format *format)
{
int ret;
int width = format->fmt.pix.width;
int height = format->fmt.pix.height;
unsigned int maxwidth, maxheight;
maxwidth = 720;
maxheight = 480;
#ifdef VBI_IS_WORKING
if (format->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) {
dprintk(1, "VBI format set: to be supported!\n");
return 0;
}
if (format->type == V4L2_BUF_TYPE_VBI_CAPTURE)
return 0;
#endif
if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
/* If they are demanding a format other than the one we support,
bail out (tvtime asks for UYVY and then retries with YUYV) */
if (format->fmt.pix.pixelformat != V4L2_PIX_FMT_UYVY)
return -EINVAL;
/* format->fmt.pix.width only support 720 and height 480 */
if (width != 720)
width = 720;
if (height != 480)
height = 480;
format->fmt.pix.width = width;
format->fmt.pix.height = height;
format->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
format->fmt.pix.bytesperline = width * 2;
format->fmt.pix.sizeimage = width * height * 2;
format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
format->fmt.pix.field = V4L2_FIELD_INTERLACED;
if (cmd == VIDIOC_TRY_FMT)
return 0;
/* maybe set new image format, driver current only support 720*480 */
dev->width = width;
dev->height = height;
dev->frame_size = width * height * 2;
dev->field_size = width * height;
dev->bytesperline = width * 2;
if (dev->stream_state == STREAM_ON) {
dprintk(1, "VIDIOC_SET_FMT: interrupting stream!\n");
ret = au0828_stream_interrupt(dev);
if (ret != 0) {
dprintk(1, "error interrupting video stream!\n");
return ret;
}
}
/* set au0828 interface0 to AS5 here again */
ret = usb_set_interface(dev->usbdev, 0, 5);
if (ret < 0) {
printk(KERN_INFO "Au0828 can't set alt setting to 5!\n");
return -EBUSY;
}
au0828_analog_stream_enable(dev);
return 0;
}
static int vidioc_queryctrl(struct file *file, void *priv,
struct v4l2_queryctrl *qc)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
if (qc->type)
return 0;
else
return -EINVAL;
}
static int vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
strlcpy(cap->driver, "au0828", sizeof(cap->driver));
strlcpy(cap->card, dev->board.name, sizeof(cap->card));
strlcpy(cap->bus_info, dev->v4l2_dev.name, sizeof(cap->bus_info));
cap->version = AU0828_VERSION_CODE;
/*set the device capabilities */
cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
#ifdef VBI_IS_WORKING
V4L2_CAP_VBI_CAPTURE |
#endif
V4L2_CAP_AUDIO |
V4L2_CAP_READWRITE |
V4L2_CAP_STREAMING |
V4L2_CAP_TUNER;
return 0;
}
static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
if (f->index)
return -EINVAL;
f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
strcpy(f->description, "Packed YUV2");
f->flags = 0;
f->pixelformat = V4L2_PIX_FMT_UYVY;
return 0;
}
static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
f->fmt.pix.width = dev->width;
f->fmt.pix.height = dev->height;
f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
f->fmt.pix.bytesperline = dev->bytesperline;
f->fmt.pix.sizeimage = dev->frame_size;
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; /* NTSC/PAL */
f->fmt.pix.field = V4L2_FIELD_INTERLACED;
return 0;
}
static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
return au0828_set_format(dev, VIDIOC_TRY_FMT, f);
}
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
int rc;
if (videobuf_queue_is_busy(&fh->vb_vidq)) {
printk(KERN_INFO "%s queue busy\n", __func__);
rc = -EBUSY;
goto out;
}
if (dev->stream_on && !fh->stream_on) {
printk(KERN_INFO "%s device in use by another fh\n", __func__);
rc = -EBUSY;
goto out;
}
return au0828_set_format(dev, VIDIOC_S_FMT, f);
out:
return rc;
}
static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id * norm)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
/* FIXME: when we support something other than NTSC, we are going to
have to make the au0828 bridge adjust the size of its capture
buffer, which is currently hardcoded at 720x480 */
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, *norm);
return 0;
}
static int vidioc_enum_input(struct file *file, void *priv,
struct v4l2_input *input)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
unsigned int tmp;
static const char *inames[] = {
[AU0828_VMUX_UNDEFINED] = "Undefined",
[AU0828_VMUX_COMPOSITE] = "Composite",
[AU0828_VMUX_SVIDEO] = "S-Video",
[AU0828_VMUX_CABLE] = "Cable TV",
[AU0828_VMUX_TELEVISION] = "Television",
[AU0828_VMUX_DVB] = "DVB",
[AU0828_VMUX_DEBUG] = "tv debug"
};
tmp = input->index;
if (tmp > AU0828_MAX_INPUT)
return -EINVAL;
if (AUVI_INPUT(tmp).type == 0)
return -EINVAL;
input->index = tmp;
strcpy(input->name, inames[AUVI_INPUT(tmp).type]);
if ((AUVI_INPUT(tmp).type == AU0828_VMUX_TELEVISION) ||
(AUVI_INPUT(tmp).type == AU0828_VMUX_CABLE))
input->type |= V4L2_INPUT_TYPE_TUNER;
else
input->type |= V4L2_INPUT_TYPE_CAMERA;
input->std = dev->vdev->tvnorms;
return 0;
}
static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
*i = dev->ctrl_input;
return 0;
}
static int vidioc_s_input(struct file *file, void *priv, unsigned int index)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
int i;
dprintk(1, "VIDIOC_S_INPUT in function %s, input=%d\n", __func__,
index);
if (index >= AU0828_MAX_INPUT)
return -EINVAL;
if (AUVI_INPUT(index).type == 0)
return -EINVAL;
dev->ctrl_input = index;
switch (AUVI_INPUT(index).type) {
case AU0828_VMUX_SVIDEO:
dev->input_type = AU0828_VMUX_SVIDEO;
break;
case AU0828_VMUX_COMPOSITE:
dev->input_type = AU0828_VMUX_COMPOSITE;
break;
case AU0828_VMUX_TELEVISION:
dev->input_type = AU0828_VMUX_TELEVISION;
break;
default:
dprintk(1, "VIDIOC_S_INPUT unknown input type set [%d]\n",
AUVI_INPUT(index).type);
break;
}
v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
AUVI_INPUT(index).vmux, 0, 0);
for (i = 0; i < AU0828_MAX_INPUT; i++) {
int enable = 0;
if (AUVI_INPUT(i).audio_setup == NULL)
continue;
if (i == index)
enable = 1;
else
enable = 0;
if (enable) {
(AUVI_INPUT(i).audio_setup)(dev, enable);
} else {
/* Make sure we leave it turned on if some
other input is routed to this callback */
if ((AUVI_INPUT(i).audio_setup) !=
((AUVI_INPUT(index).audio_setup))) {
(AUVI_INPUT(i).audio_setup)(dev, enable);
}
}
}
v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
AUVI_INPUT(index).amux, 0, 0);
return 0;
}
static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
unsigned int index = a->index;
if (a->index > 1)
return -EINVAL;
index = dev->ctrl_ainput;
if (index == 0)
strcpy(a->name, "Television");
else
strcpy(a->name, "Line in");
a->capability = V4L2_AUDCAP_STEREO;
a->index = index;
return 0;
}
static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
if (a->index != dev->ctrl_ainput)
return -EINVAL;
return 0;
}
static int vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
return 0;
}
static int vidioc_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
return 0;
}
static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
if (t->index != 0)
return -EINVAL;
strcpy(t->name, "Auvitek tuner");
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
return 0;
}
static int vidioc_s_tuner(struct file *file, void *priv,
struct v4l2_tuner *t)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
if (t->index != 0)
return -EINVAL;
t->type = V4L2_TUNER_ANALOG_TV;
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
dprintk(1, "VIDIOC_S_TUNER: signal = %x, afc = %x\n", t->signal,
t->afc);
return 0;
}
static int vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *freq)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
freq->type = V4L2_TUNER_ANALOG_TV;
freq->frequency = dev->ctrl_freq;
return 0;
}
static int vidioc_s_frequency(struct file *file, void *priv,
struct v4l2_frequency *freq)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
if (freq->tuner != 0)
return -EINVAL;
if (freq->type != V4L2_TUNER_ANALOG_TV)
return -EINVAL;
dev->ctrl_freq = freq->frequency;
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, freq);
au0828_analog_stream_reset(dev);
return 0;
}
static int vidioc_g_chip_ident(struct file *file, void *priv,
struct v4l2_dbg_chip_ident *chip)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
chip->ident = V4L2_IDENT_NONE;
chip->revision = 0;
if (v4l2_chip_match_host(&chip->match)) {
chip->ident = V4L2_IDENT_AU0828;
return 0;
}
v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
if (chip->ident == V4L2_IDENT_NONE)
return -EINVAL;
return 0;
}
static int vidioc_cropcap(struct file *file, void *priv,
struct v4l2_cropcap *cc)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
cc->bounds.left = 0;
cc->bounds.top = 0;
cc->bounds.width = dev->width;
cc->bounds.height = dev->height;
cc->defrect = cc->bounds;
cc->pixelaspect.numerator = 54;
cc->pixelaspect.denominator = 59;
return 0;
}
static int vidioc_streamon(struct file *file, void *priv,
enum v4l2_buf_type type)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
au0828_analog_stream_enable(dev);
v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 1);
}
mutex_lock(&dev->lock);
rc = res_get(fh);
if (likely(rc >= 0))
rc = videobuf_streamon(&fh->vb_vidq);
mutex_unlock(&dev->lock);
return rc;
}
static int vidioc_streamoff(struct file *file, void *priv,
enum v4l2_buf_type type)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
int i;
int ret;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (type != fh->type)
return -EINVAL;
if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0);
ret = au0828_stream_interrupt(dev);
if (ret != 0)
return ret;
}
for (i = 0; i < AU0828_MAX_INPUT; i++) {
if (AUVI_INPUT(i).audio_setup == NULL)
continue;
(AUVI_INPUT(i).audio_setup)(dev, 0);
}
mutex_lock(&dev->lock);
videobuf_streamoff(&fh->vb_vidq);
res_free(fh);
mutex_unlock(&dev->lock);
return 0;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int vidioc_g_register(struct file *file, void *priv,
struct v4l2_dbg_register *reg)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
switch (reg->match.type) {
case V4L2_CHIP_MATCH_I2C_DRIVER:
v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
return 0;
default:
return -EINVAL;
}
}
static int vidioc_s_register(struct file *file, void *priv,
struct v4l2_dbg_register *reg)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
switch (reg->match.type) {
case V4L2_CHIP_MATCH_I2C_DRIVER:
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
return 0;
default:
return -EINVAL;
}
return 0;
}
#endif
static int vidioc_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *rb)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
return videobuf_reqbufs(&fh->vb_vidq, rb);
}
static int vidioc_querybuf(struct file *file, void *priv,
struct v4l2_buffer *b)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
return videobuf_querybuf(&fh->vb_vidq, b);
}
static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
return videobuf_qbuf(&fh->vb_vidq, b);
}
static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
struct au0828_fh *fh = priv;
struct au0828_dev *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
/* Workaround for a bug in the au0828 hardware design that sometimes
results in the colorspace being inverted */
if (dev->greenscreen_detected == 1) {
dprintk(1, "Detected green frame. Resetting stream...\n");
au0828_analog_stream_reset(dev);
dev->greenscreen_detected = 0;
}
return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
}
#ifdef CONFIG_VIDEO_V4L1_COMPAT
static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
{
struct au0828_fh *fh = priv;
return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
}
#endif
static struct v4l2_file_operations au0828_v4l_fops = {
.owner = THIS_MODULE,
.open = au0828_v4l2_open,
.release = au0828_v4l2_close,
.read = au0828_v4l2_read,
.poll = au0828_v4l2_poll,
.mmap = au0828_v4l2_mmap,
.ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops video_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
#ifdef VBI_IS_WORKING
.vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
.vidioc_try_fmt_vbi_cap = vidioc_s_fmt_vbi_cap,
.vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap,
#endif
.vidioc_g_audio = vidioc_g_audio,
.vidioc_s_audio = vidioc_s_audio,
.vidioc_cropcap = vidioc_cropcap,
#ifdef VBI_IS_WORKING
.vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap,
.vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
.vidioc_s_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
#endif
.vidioc_reqbufs = vidioc_reqbufs,
.vidioc_querybuf = vidioc_querybuf,
.vidioc_qbuf = vidioc_qbuf,
.vidioc_dqbuf = vidioc_dqbuf,
.vidioc_s_std = vidioc_s_std,
.vidioc_enum_input = vidioc_enum_input,
.vidioc_g_input = vidioc_g_input,
.vidioc_s_input = vidioc_s_input,
.vidioc_queryctrl = vidioc_queryctrl,
.vidioc_g_ctrl = vidioc_g_ctrl,
.vidioc_s_ctrl = vidioc_s_ctrl,
.vidioc_streamon = vidioc_streamon,
.vidioc_streamoff = vidioc_streamoff,
.vidioc_g_tuner = vidioc_g_tuner,
.vidioc_s_tuner = vidioc_s_tuner,
.vidioc_g_frequency = vidioc_g_frequency,
.vidioc_s_frequency = vidioc_s_frequency,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.vidioc_g_register = vidioc_g_register,
.vidioc_s_register = vidioc_s_register,
#endif
.vidioc_g_chip_ident = vidioc_g_chip_ident,
#ifdef CONFIG_VIDEO_V4L1_COMPAT
.vidiocgmbuf = vidiocgmbuf,
#endif
};
static const struct video_device au0828_video_template = {
.fops = &au0828_v4l_fops,
.release = video_device_release,
.ioctl_ops = &video_ioctl_ops,
.minor = -1,
.tvnorms = V4L2_STD_NTSC_M,
.current_norm = V4L2_STD_NTSC_M,
};
/**************************************************************************/
int au0828_analog_register(struct au0828_dev *dev,
struct usb_interface *interface)
{
int retval = -ENOMEM;
struct usb_host_interface *iface_desc;
struct usb_endpoint_descriptor *endpoint;
int i;
dprintk(1, "au0828_analog_register called!\n");
/* set au0828 usb interface0 to as5 */
retval = usb_set_interface(dev->usbdev,
interface->cur_altsetting->desc.bInterfaceNumber, 5);
if (retval != 0) {
printk(KERN_INFO "Failure setting usb interface0 to as5\n");
return retval;
}
/* Figure out which endpoint has the isoc interface */
iface_desc = interface->cur_altsetting;
for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
endpoint = &iface_desc->endpoint[i].desc;
if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
== USB_DIR_IN) &&
((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
== USB_ENDPOINT_XFER_ISOC)) {
/* we find our isoc in endpoint */
u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize);
dev->max_pkt_size = (tmp & 0x07ff) *
(((tmp & 0x1800) >> 11) + 1);
dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
}
}
if (!(dev->isoc_in_endpointaddr)) {
printk(KERN_INFO "Could not locate isoc endpoint\n");
kfree(dev);
return -ENODEV;
}
init_waitqueue_head(&dev->open);
spin_lock_init(&dev->slock);
mutex_init(&dev->lock);
INIT_LIST_HEAD(&dev->vidq.active);
INIT_LIST_HEAD(&dev->vidq.queued);
dev->width = NTSC_STD_W;
dev->height = NTSC_STD_H;
dev->field_size = dev->width * dev->height;
dev->frame_size = dev->field_size << 1;
dev->bytesperline = dev->width << 1;
dev->ctrl_ainput = 0;
/* allocate and fill v4l2 video struct */
dev->vdev = video_device_alloc();
if (NULL == dev->vdev) {
dprintk(1, "Can't allocate video_device.\n");
return -ENOMEM;
}
#ifdef VBI_IS_WORKING
dev->vbi_dev = video_device_alloc();
if (NULL == dev->vbi_dev) {
dprintk(1, "Can't allocate vbi_device.\n");
kfree(dev->vdev);
return -ENOMEM;
}
#endif
/* Fill the video capture device struct */
*dev->vdev = au0828_video_template;
dev->vdev->parent = &dev->usbdev->dev;
strcpy(dev->vdev->name, "au0828a video");
#ifdef VBI_IS_WORKING
/* Setup the VBI device */
*dev->vbi_dev = au0828_video_template;
dev->vbi_dev->parent = &dev->usbdev->dev;
strcpy(dev->vbi_dev->name, "au0828a vbi");
#endif
list_add_tail(&dev->au0828list, &au0828_devlist);
/* Register the v4l2 device */
retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER, -1);
if (retval != 0) {
dprintk(1, "unable to register video device (error = %d).\n",
retval);
list_del(&dev->au0828list);
video_device_release(dev->vdev);
return -ENODEV;
}
#ifdef VBI_IS_WORKING
/* Register the vbi device */
retval = video_register_device(dev->vbi_dev, VFL_TYPE_VBI, -1);
if (retval != 0) {
dprintk(1, "unable to register vbi device (error = %d).\n",
retval);
list_del(&dev->au0828list);
video_device_release(dev->vbi_dev);
video_device_release(dev->vdev);
return -ENODEV;
}
#endif
dprintk(1, "%s completed!\n", __func__);
return 0;
}