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linux/drivers/media/usb/tm6000/tm6000-video.c

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/*
* tm6000-video.c - driver for TM5600/TM6000/TM6010 USB video capture devices
*
* Copyright (C) 2006-2007 Mauro Carvalho Chehab <mchehab@infradead.org>
*
* Copyright (C) 2007 Michel Ludwig <michel.ludwig@gmail.com>
* - Fixed module load/unload
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/random.h>
#include <linux/usb.h>
#include <linux/videodev2.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-event.h>
#include <media/tuner.h>
#include <linux/interrupt.h>
#include <linux/kthread.h>
#include <linux/highmem.h>
#include <linux/freezer.h>
#include "tm6000-regs.h"
#include "tm6000.h"
#define BUFFER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
/* Limits minimum and default number of buffers */
#define TM6000_MIN_BUF 4
#define TM6000_DEF_BUF 8
#define TM6000_NUM_URB_BUF 8
#define TM6000_MAX_ISO_PACKETS 46 /* Max number of ISO packets */
/* Declare static vars that will be used as parameters */
static unsigned int vid_limit = 16; /* Video memory limit, in Mb */
static int video_nr = -1; /* /dev/videoN, -1 for autodetect */
static int radio_nr = -1; /* /dev/radioN, -1 for autodetect */
static bool keep_urb; /* keep urb buffers allocated */
/* Debug level */
int tm6000_debug;
EXPORT_SYMBOL_GPL(tm6000_debug);
static struct tm6000_fmt format[] = {
{
.name = "4:2:2, packed, YVY2",
.fourcc = V4L2_PIX_FMT_YUYV,
.depth = 16,
}, {
.name = "4:2:2, packed, UYVY",
.fourcc = V4L2_PIX_FMT_UYVY,
.depth = 16,
}, {
.name = "A/V + VBI mux packet",
.fourcc = V4L2_PIX_FMT_TM6000,
.depth = 16,
}
};
/* ------------------------------------------------------------------
* DMA and thread functions
* ------------------------------------------------------------------
*/
#define norm_maxw(a) 720
#define norm_maxh(a) 576
#define norm_minw(a) norm_maxw(a)
#define norm_minh(a) norm_maxh(a)
/*
* video-buf generic routine to get the next available buffer
*/
static inline void get_next_buf(struct tm6000_dmaqueue *dma_q,
struct tm6000_buffer **buf)
{
struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
if (list_empty(&dma_q->active)) {
dprintk(dev, V4L2_DEBUG_QUEUE, "No active queue to serve\n");
*buf = NULL;
return;
}
*buf = list_entry(dma_q->active.next,
struct tm6000_buffer, vb.queue);
}
/*
* Announces that a buffer were filled and request the next
*/
static inline void buffer_filled(struct tm6000_core *dev,
struct tm6000_dmaqueue *dma_q,
struct tm6000_buffer *buf)
{
/* Advice that buffer was filled */
dprintk(dev, V4L2_DEBUG_ISOC, "[%p/%d] wakeup\n", buf, buf->vb.i);
buf->vb.state = VIDEOBUF_DONE;
buf->vb.field_count++;
v4l2_get_timestamp(&buf->vb.ts);
list_del(&buf->vb.queue);
wake_up(&buf->vb.done);
}
/*
* Identify the tm5600/6000 buffer header type and properly handles
*/
static int copy_streams(u8 *data, unsigned long len,
struct urb *urb)
{
struct tm6000_dmaqueue *dma_q = urb->context;
struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
u8 *ptr = data, *endp = data+len;
unsigned long header = 0;
int rc = 0;
unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0;
struct tm6000_buffer *vbuf = NULL;
char *voutp = NULL;
unsigned int linewidth;
if (!dev->radio) {
/* get video buffer */
get_next_buf(dma_q, &vbuf);
if (!vbuf)
return rc;
voutp = videobuf_to_vmalloc(&vbuf->vb);
if (!voutp)
return 0;
}
for (ptr = data; ptr < endp;) {
if (!dev->isoc_ctl.cmd) {
/* Header */
if (dev->isoc_ctl.tmp_buf_len > 0) {
/* from last urb or packet */
header = dev->isoc_ctl.tmp_buf;
if (4 - dev->isoc_ctl.tmp_buf_len > 0) {
memcpy((u8 *)&header +
dev->isoc_ctl.tmp_buf_len,
ptr,
4 - dev->isoc_ctl.tmp_buf_len);
ptr += 4 - dev->isoc_ctl.tmp_buf_len;
}
dev->isoc_ctl.tmp_buf_len = 0;
} else {
if (ptr + 3 >= endp) {
/* have incomplete header */
dev->isoc_ctl.tmp_buf_len = endp - ptr;
memcpy(&dev->isoc_ctl.tmp_buf, ptr,
dev->isoc_ctl.tmp_buf_len);
return rc;
}
/* Seek for sync */
for (; ptr < endp - 3; ptr++) {
if (*(ptr + 3) == 0x47)
break;
}
/* Get message header */
header = *(unsigned long *)ptr;
ptr += 4;
}
/* split the header fields */
size = ((header & 0x7e) << 1);
if (size > 0)
size -= 4;
block = (header >> 7) & 0xf;
field = (header >> 11) & 0x1;
line = (header >> 12) & 0x1ff;
cmd = (header >> 21) & 0x7;
/* Validates haeder fields */
if (size > TM6000_URB_MSG_LEN)
size = TM6000_URB_MSG_LEN;
pktsize = TM6000_URB_MSG_LEN;
/*
* calculate position in buffer and change the buffer
*/
switch (cmd) {
case TM6000_URB_MSG_VIDEO:
if (!dev->radio) {
if ((dev->isoc_ctl.vfield != field) &&
(field == 1)) {
/*
* Announces that a new buffer
* were filled
*/
buffer_filled(dev, dma_q, vbuf);
dprintk(dev, V4L2_DEBUG_ISOC,
"new buffer filled\n");
get_next_buf(dma_q, &vbuf);
if (!vbuf)
return rc;
voutp = videobuf_to_vmalloc(&vbuf->vb);
if (!voutp)
return rc;
memset(voutp, 0, vbuf->vb.size);
}
linewidth = vbuf->vb.width << 1;
pos = ((line << 1) - field - 1) *
linewidth + block * TM6000_URB_MSG_LEN;
/* Don't allow to write out of the buffer */
if (pos + size > vbuf->vb.size)
cmd = TM6000_URB_MSG_ERR;
dev->isoc_ctl.vfield = field;
}
break;
case TM6000_URB_MSG_VBI:
break;
case TM6000_URB_MSG_AUDIO:
case TM6000_URB_MSG_PTS:
size = pktsize; /* Size is always 180 bytes */
break;
}
} else {
/* Continue the last copy */
cmd = dev->isoc_ctl.cmd;
size = dev->isoc_ctl.size;
pos = dev->isoc_ctl.pos;
pktsize = dev->isoc_ctl.pktsize;
field = dev->isoc_ctl.field;
}
cpysize = (endp - ptr > size) ? size : endp - ptr;
if (cpysize) {
/* copy data in different buffers */
switch (cmd) {
case TM6000_URB_MSG_VIDEO:
/* Fills video buffer */
if (vbuf)
memcpy(&voutp[pos], ptr, cpysize);
break;
case TM6000_URB_MSG_AUDIO: {
int i;
for (i = 0; i < cpysize; i += 2)
swab16s((u16 *)(ptr + i));
tm6000_call_fillbuf(dev, TM6000_AUDIO, ptr, cpysize);
break;
}
case TM6000_URB_MSG_VBI:
/* Need some code to copy vbi buffer */
break;
case TM6000_URB_MSG_PTS: {
/* Need some code to copy pts */
u32 pts;
pts = *(u32 *)ptr;
dprintk(dev, V4L2_DEBUG_ISOC, "field %d, PTS %x",
field, pts);
break;
}
}
}
if (ptr + pktsize > endp) {
/*
* End of URB packet, but cmd processing is not
* complete. Preserve the state for a next packet
*/
dev->isoc_ctl.pos = pos + cpysize;
dev->isoc_ctl.size = size - cpysize;
dev->isoc_ctl.cmd = cmd;
dev->isoc_ctl.field = field;
dev->isoc_ctl.pktsize = pktsize - (endp - ptr);
ptr += endp - ptr;
} else {
dev->isoc_ctl.cmd = 0;
ptr += pktsize;
}
}
return 0;
}
/*
* Identify the tm5600/6000 buffer header type and properly handles
*/
static int copy_multiplexed(u8 *ptr, unsigned long len,
struct urb *urb)
{
struct tm6000_dmaqueue *dma_q = urb->context;
struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
unsigned int pos = dev->isoc_ctl.pos, cpysize;
int rc = 1;
struct tm6000_buffer *buf;
char *outp = NULL;
get_next_buf(dma_q, &buf);
if (buf)
outp = videobuf_to_vmalloc(&buf->vb);
if (!outp)
return 0;
while (len > 0) {
cpysize = min(len, buf->vb.size-pos);
memcpy(&outp[pos], ptr, cpysize);
pos += cpysize;
ptr += cpysize;
len -= cpysize;
if (pos >= buf->vb.size) {
pos = 0;
/* Announces that a new buffer were filled */
buffer_filled(dev, dma_q, buf);
dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n");
get_next_buf(dma_q, &buf);
if (!buf)
break;
outp = videobuf_to_vmalloc(&(buf->vb));
if (!outp)
return rc;
pos = 0;
}
}
dev->isoc_ctl.pos = pos;
return rc;
}
static inline void print_err_status(struct tm6000_core *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) {
dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n",
status, errmsg);
} else {
dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n",
packet, status, errmsg);
}
}
/*
* Controls the isoc copy of each urb packet
*/
static inline int tm6000_isoc_copy(struct urb *urb)
{
struct tm6000_dmaqueue *dma_q = urb->context;
struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
int i, len = 0, rc = 1, status;
char *p;
if (urb->status < 0) {
print_err_status(dev, -1, urb->status);
return 0;
}
for (i = 0; i < urb->number_of_packets; i++) {
status = urb->iso_frame_desc[i].status;
if (status < 0) {
print_err_status(dev, i, status);
continue;
}
len = urb->iso_frame_desc[i].actual_length;
if (len > 0) {
p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
if (!urb->iso_frame_desc[i].status) {
if ((dev->fourcc) == V4L2_PIX_FMT_TM6000) {
rc = copy_multiplexed(p, len, urb);
if (rc <= 0)
return rc;
} else {
copy_streams(p, len, urb);
}
}
}
}
return rc;
}
/* ------------------------------------------------------------------
* URB control
* ------------------------------------------------------------------
*/
/*
* IRQ callback, called by URB callback
*/
static void tm6000_irq_callback(struct urb *urb)
{
struct tm6000_dmaqueue *dma_q = urb->context;
struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
int i;
switch (urb->status) {
case 0:
case -ETIMEDOUT:
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
return;
default:
tm6000_err("urb completion error %d.\n", urb->status);
break;
}
spin_lock(&dev->slock);
tm6000_isoc_copy(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 = usb_submit_urb(urb, GFP_ATOMIC);
if (urb->status)
tm6000_err("urb resubmit failed (error=%i)\n",
urb->status);
}
/*
* Allocate URB buffers
*/
static int tm6000_alloc_urb_buffers(struct tm6000_core *dev)
{
int num_bufs = TM6000_NUM_URB_BUF;
int i;
if (dev->urb_buffer != NULL)
return 0;
dev->urb_buffer = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
if (!dev->urb_buffer) {
tm6000_err("cannot allocate memory for urb buffers\n");
return -ENOMEM;
}
dev->urb_dma = kmalloc(sizeof(dma_addr_t *)*num_bufs, GFP_KERNEL);
if (!dev->urb_dma) {
tm6000_err("cannot allocate memory for urb dma pointers\n");
return -ENOMEM;
}
for (i = 0; i < num_bufs; i++) {
dev->urb_buffer[i] = usb_alloc_coherent(
dev->udev, dev->urb_size,
GFP_KERNEL, &dev->urb_dma[i]);
if (!dev->urb_buffer[i]) {
tm6000_err("unable to allocate %i bytes for transfer buffer %i\n",
dev->urb_size, i);
return -ENOMEM;
}
memset(dev->urb_buffer[i], 0, dev->urb_size);
}
return 0;
}
/*
* Free URB buffers
*/
static int tm6000_free_urb_buffers(struct tm6000_core *dev)
{
int i;
if (dev->urb_buffer == NULL)
return 0;
for (i = 0; i < TM6000_NUM_URB_BUF; i++) {
if (dev->urb_buffer[i]) {
usb_free_coherent(dev->udev,
dev->urb_size,
dev->urb_buffer[i],
dev->urb_dma[i]);
dev->urb_buffer[i] = NULL;
}
}
kfree(dev->urb_buffer);
kfree(dev->urb_dma);
dev->urb_buffer = NULL;
dev->urb_dma = NULL;
return 0;
}
/*
* Stop and Deallocate URBs
*/
static void tm6000_uninit_isoc(struct tm6000_core *dev)
{
struct urb *urb;
int i;
dev->isoc_ctl.buf = NULL;
for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
urb = dev->isoc_ctl.urb[i];
if (urb) {
usb_kill_urb(urb);
usb_unlink_urb(urb);
usb_free_urb(urb);
dev->isoc_ctl.urb[i] = NULL;
}
dev->isoc_ctl.transfer_buffer[i] = NULL;
}
if (!keep_urb)
tm6000_free_urb_buffers(dev);
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;
}
/*
* Assign URBs and start IRQ
*/
static int tm6000_prepare_isoc(struct tm6000_core *dev)
{
struct tm6000_dmaqueue *dma_q = &dev->vidq;
int i, j, sb_size, pipe, size, max_packets;
int num_bufs = TM6000_NUM_URB_BUF;
struct urb *urb;
/* De-allocates all pending stuff */
tm6000_uninit_isoc(dev);
/* Stop interrupt USB pipe */
tm6000_ir_int_stop(dev);
usb_set_interface(dev->udev,
dev->isoc_in.bInterfaceNumber,
dev->isoc_in.bAlternateSetting);
/* Start interrupt USB pipe */
tm6000_ir_int_start(dev);
pipe = usb_rcvisocpipe(dev->udev,
dev->isoc_in.endp->desc.bEndpointAddress &
USB_ENDPOINT_NUMBER_MASK);
size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
if (size > dev->isoc_in.maxsize)
size = dev->isoc_in.maxsize;
dev->isoc_ctl.max_pkt_size = size;
max_packets = TM6000_MAX_ISO_PACKETS;
sb_size = max_packets * size;
dev->urb_size = sb_size;
dev->isoc_ctl.num_bufs = num_bufs;
dev->isoc_ctl.urb = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
if (!dev->isoc_ctl.urb) {
tm6000_err("cannot alloc memory for usb buffers\n");
return -ENOMEM;
}
dev->isoc_ctl.transfer_buffer = kmalloc(sizeof(void *)*num_bufs,
GFP_KERNEL);
if (!dev->isoc_ctl.transfer_buffer) {
tm6000_err("cannot allocate memory for usbtransfer\n");
kfree(dev->isoc_ctl.urb);
return -ENOMEM;
}
dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets"
" (%d bytes) of %d bytes each to handle %u size\n",
max_packets, num_bufs, sb_size,
dev->isoc_in.maxsize, size);
if (!dev->urb_buffer && tm6000_alloc_urb_buffers(dev) < 0) {
tm6000_err("cannot allocate memory for urb buffers\n");
/* call free, as some buffers might have been allocated */
tm6000_free_urb_buffers(dev);
kfree(dev->isoc_ctl.urb);
kfree(dev->isoc_ctl.transfer_buffer);
return -ENOMEM;
}
/* 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) {
tm6000_err("cannot alloc isoc_ctl.urb %i\n", i);
tm6000_uninit_isoc(dev);
usb_free_urb(urb);
return -ENOMEM;
}
dev->isoc_ctl.urb[i] = urb;
urb->transfer_dma = dev->urb_dma[i];
dev->isoc_ctl.transfer_buffer[i] = dev->urb_buffer[i];
usb_fill_bulk_urb(urb, dev->udev, pipe,
dev->isoc_ctl.transfer_buffer[i], sb_size,
tm6000_irq_callback, dma_q);
urb->interval = dev->isoc_in.endp->desc.bInterval;
urb->number_of_packets = max_packets;
urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
for (j = 0; j < max_packets; j++) {
urb->iso_frame_desc[j].offset = size * j;
urb->iso_frame_desc[j].length = size;
}
}
return 0;
}
static int tm6000_start_thread(struct tm6000_core *dev)
{
struct tm6000_dmaqueue *dma_q = &dev->vidq;
int i;
dma_q->frame = 0;
dma_q->ini_jiffies = jiffies;
init_waitqueue_head(&dma_q->wq);
/* submit urbs and enables IRQ */
for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
int rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
if (rc) {
tm6000_err("submit of urb %i failed (error=%i)\n", i,
rc);
tm6000_uninit_isoc(dev);
return rc;
}
}
return 0;
}
/* ------------------------------------------------------------------
* Videobuf operations
* ------------------------------------------------------------------
*/
static int
buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
{
struct tm6000_fh *fh = vq->priv_data;
*size = fh->fmt->depth * fh->width * fh->height >> 3;
if (0 == *count)
*count = TM6000_DEF_BUF;
if (*count < TM6000_MIN_BUF)
*count = TM6000_MIN_BUF;
while (*size * *count > vid_limit * 1024 * 1024)
(*count)--;
return 0;
}
static void free_buffer(struct videobuf_queue *vq, struct tm6000_buffer *buf)
{
struct tm6000_fh *fh = vq->priv_data;
struct tm6000_core *dev = fh->dev;
unsigned long flags;
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 tm6000_fh *fh = vq->priv_data;
struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
struct tm6000_core *dev = fh->dev;
int rc = 0;
BUG_ON(NULL == fh->fmt);
/* FIXME: It assumes depth=2 */
/* The only currently supported format is 16 bits/pixel */
buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3;
if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
return -EINVAL;
if (buf->fmt != fh->fmt ||
buf->vb.width != fh->width ||
buf->vb.height != fh->height ||
buf->vb.field != field) {
buf->fmt = fh->fmt;
buf->vb.width = fh->width;
buf->vb.height = fh->height;
buf->vb.field = field;
buf->vb.state = VIDEOBUF_NEEDS_INIT;
}
if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
rc = videobuf_iolock(vq, &buf->vb, NULL);
if (rc != 0)
goto fail;
}
if (!dev->isoc_ctl.num_bufs) {
rc = tm6000_prepare_isoc(dev);
if (rc < 0)
goto fail;
rc = tm6000_start_thread(dev);
if (rc < 0)
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 tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
struct tm6000_fh *fh = vq->priv_data;
struct tm6000_core *dev = fh->dev;
struct tm6000_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 tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
free_buffer(vq, buf);
}
static struct videobuf_queue_ops tm6000_video_qops = {
.buf_setup = buffer_setup,
.buf_prepare = buffer_prepare,
.buf_queue = buffer_queue,
.buf_release = buffer_release,
};
/* ------------------------------------------------------------------
* IOCTL handling
* ------------------------------------------------------------------
*/
static bool is_res_read(struct tm6000_core *dev, struct tm6000_fh *fh)
{
/* Is the current fh handling it? if so, that's OK */
if (dev->resources == fh && dev->is_res_read)
return true;
return false;
}
static bool is_res_streaming(struct tm6000_core *dev, struct tm6000_fh *fh)
{
/* Is the current fh handling it? if so, that's OK */
if (dev->resources == fh)
return true;
return false;
}
static bool res_get(struct tm6000_core *dev, struct tm6000_fh *fh,
bool is_res_read)
{
/* Is the current fh handling it? if so, that's OK */
if (dev->resources == fh && dev->is_res_read == is_res_read)
return true;
/* is it free? */
if (dev->resources)
return false;
/* grab it */
dev->resources = fh;
dev->is_res_read = is_res_read;
dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
return true;
}
static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
{
/* Is the current fh handling it? if so, that's OK */
if (dev->resources != fh)
return;
dev->resources = NULL;
dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
}
/* ------------------------------------------------------------------
* IOCTL vidioc handling
* ------------------------------------------------------------------
*/
static int vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
struct video_device *vdev = video_devdata(file);
strlcpy(cap->driver, "tm6000", sizeof(cap->driver));
strlcpy(cap->card, "Trident TVMaster TM5600/6000/6010", sizeof(cap->card));
usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
if (dev->tuner_type != TUNER_ABSENT)
cap->device_caps |= V4L2_CAP_TUNER;
if (vdev->vfl_type == VFL_TYPE_GRABBER)
cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_STREAMING |
V4L2_CAP_READWRITE;
else
cap->device_caps |= V4L2_CAP_RADIO;
cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
V4L2_CAP_RADIO | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
return 0;
}
static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
if (f->index >= ARRAY_SIZE(format))
return -EINVAL;
strlcpy(f->description, format[f->index].name, sizeof(f->description));
f->pixelformat = format[f->index].fourcc;
return 0;
}
static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct tm6000_fh *fh = priv;
f->fmt.pix.width = fh->width;
f->fmt.pix.height = fh->height;
f->fmt.pix.field = fh->vb_vidq.field;
f->fmt.pix.pixelformat = fh->fmt->fourcc;
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
f->fmt.pix.bytesperline =
(f->fmt.pix.width * fh->fmt->depth) >> 3;
f->fmt.pix.sizeimage =
f->fmt.pix.height * f->fmt.pix.bytesperline;
f->fmt.pix.priv = 0;
return 0;
}
static struct tm6000_fmt *format_by_fourcc(unsigned int fourcc)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(format); i++)
if (format[i].fourcc == fourcc)
return format+i;
return NULL;
}
static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
struct tm6000_fmt *fmt;
enum v4l2_field field;
fmt = format_by_fourcc(f->fmt.pix.pixelformat);
if (NULL == fmt) {
dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Fourcc format (0x%08x)"
" invalid.\n", f->fmt.pix.pixelformat);
return -EINVAL;
}
field = f->fmt.pix.field;
field = V4L2_FIELD_INTERLACED;
tm6000_get_std_res(dev);
f->fmt.pix.width = dev->width;
f->fmt.pix.height = dev->height;
f->fmt.pix.width &= ~0x01;
f->fmt.pix.field = field;
f->fmt.pix.priv = 0;
f->fmt.pix.bytesperline =
(f->fmt.pix.width * fmt->depth) >> 3;
f->fmt.pix.sizeimage =
f->fmt.pix.height * f->fmt.pix.bytesperline;
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
return 0;
}
/*FIXME: This seems to be generic enough to be at videodev2 */
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct tm6000_fh *fh = priv;
struct tm6000_core *dev = fh->dev;
int ret = vidioc_try_fmt_vid_cap(file, fh, f);
if (ret < 0)
return ret;
fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
fh->width = f->fmt.pix.width;
fh->height = f->fmt.pix.height;
fh->vb_vidq.field = f->fmt.pix.field;
fh->type = f->type;
dev->fourcc = f->fmt.pix.pixelformat;
tm6000_set_fourcc_format(dev);
return 0;
}
static int vidioc_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *p)
{
struct tm6000_fh *fh = priv;
return videobuf_reqbufs(&fh->vb_vidq, p);
}
static int vidioc_querybuf(struct file *file, void *priv,
struct v4l2_buffer *p)
{
struct tm6000_fh *fh = priv;
return videobuf_querybuf(&fh->vb_vidq, p);
}
static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
{
struct tm6000_fh *fh = priv;
return videobuf_qbuf(&fh->vb_vidq, p);
}
static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
{
struct tm6000_fh *fh = priv;
return videobuf_dqbuf(&fh->vb_vidq, p,
file->f_flags & O_NONBLOCK);
}
static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
{
struct tm6000_fh *fh = priv;
struct tm6000_core *dev = fh->dev;
if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (i != fh->type)
return -EINVAL;
if (!res_get(dev, fh, false))
return -EBUSY;
return videobuf_streamon(&fh->vb_vidq);
}
static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
{
struct tm6000_fh *fh = priv;
struct tm6000_core *dev = fh->dev;
if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (i != fh->type)
return -EINVAL;
videobuf_streamoff(&fh->vb_vidq);
res_free(dev, fh);
return 0;
}
static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
{
int rc = 0;
struct tm6000_fh *fh = priv;
struct tm6000_core *dev = fh->dev;
dev->norm = norm;
rc = tm6000_init_analog_mode(dev);
fh->width = dev->width;
fh->height = dev->height;
if (rc < 0)
return rc;
v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->norm);
return 0;
}
static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
{
struct tm6000_fh *fh = priv;
struct tm6000_core *dev = fh->dev;
*norm = dev->norm;
return 0;
}
static const char *iname[] = {
[TM6000_INPUT_TV] = "Television",
[TM6000_INPUT_COMPOSITE1] = "Composite 1",
[TM6000_INPUT_COMPOSITE2] = "Composite 2",
[TM6000_INPUT_SVIDEO] = "S-Video",
};
static int vidioc_enum_input(struct file *file, void *priv,
struct v4l2_input *i)
{
struct tm6000_fh *fh = priv;
struct tm6000_core *dev = fh->dev;
unsigned int n;
n = i->index;
if (n >= 3)
return -EINVAL;
if (!dev->vinput[n].type)
return -EINVAL;
i->index = n;
if (dev->vinput[n].type == TM6000_INPUT_TV)
i->type = V4L2_INPUT_TYPE_TUNER;
else
i->type = V4L2_INPUT_TYPE_CAMERA;
strcpy(i->name, iname[dev->vinput[n].type]);
i->std = TM6000_STD;
return 0;
}
static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
{
struct tm6000_fh *fh = priv;
struct tm6000_core *dev = fh->dev;
*i = dev->input;
return 0;
}
static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
{
struct tm6000_fh *fh = priv;
struct tm6000_core *dev = fh->dev;
int rc = 0;
if (i >= 3)
return -EINVAL;
if (!dev->vinput[i].type)
return -EINVAL;
dev->input = i;
rc = vidioc_s_std(file, priv, dev->norm);
return rc;
}
/* --- controls ---------------------------------------------- */
static int tm6000_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct tm6000_core *dev = container_of(ctrl->handler, struct tm6000_core, ctrl_handler);
u8 val = ctrl->val;
switch (ctrl->id) {
case V4L2_CID_CONTRAST:
tm6000_set_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, val);
return 0;
case V4L2_CID_BRIGHTNESS:
tm6000_set_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, val);
return 0;
case V4L2_CID_SATURATION:
tm6000_set_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, val);
return 0;
case V4L2_CID_HUE:
tm6000_set_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, val);
return 0;
}
return -EINVAL;
}
static const struct v4l2_ctrl_ops tm6000_ctrl_ops = {
.s_ctrl = tm6000_s_ctrl,
};
static int tm6000_radio_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct tm6000_core *dev = container_of(ctrl->handler,
struct tm6000_core, radio_ctrl_handler);
u8 val = ctrl->val;
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
dev->ctl_mute = val;
tm6000_tvaudio_set_mute(dev, val);
return 0;
case V4L2_CID_AUDIO_VOLUME:
dev->ctl_volume = val;
tm6000_set_volume(dev, val);
return 0;
}
return -EINVAL;
}
static const struct v4l2_ctrl_ops tm6000_radio_ctrl_ops = {
.s_ctrl = tm6000_radio_s_ctrl,
};
static int vidioc_g_tuner(struct file *file, void *priv,
struct v4l2_tuner *t)
{
struct tm6000_fh *fh = priv;
struct tm6000_core *dev = fh->dev;
if (UNSET == dev->tuner_type)
return -ENOTTY;
if (0 != t->index)
return -EINVAL;
strcpy(t->name, "Television");
t->type = V4L2_TUNER_ANALOG_TV;
t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO;
t->rangehigh = 0xffffffffUL;
t->rxsubchans = V4L2_TUNER_SUB_STEREO;
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
t->audmode = dev->amode;
return 0;
}
static int vidioc_s_tuner(struct file *file, void *priv,
const struct v4l2_tuner *t)
{
struct tm6000_fh *fh = priv;
struct tm6000_core *dev = fh->dev;
if (UNSET == dev->tuner_type)
return -ENOTTY;
if (0 != t->index)
return -EINVAL;
if (t->audmode > V4L2_TUNER_MODE_STEREO)
dev->amode = V4L2_TUNER_MODE_STEREO;
else
dev->amode = t->audmode;
dprintk(dev, 3, "audio mode: %x\n", t->audmode);
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
return 0;
}
static int vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
struct tm6000_fh *fh = priv;
struct tm6000_core *dev = fh->dev;
if (UNSET == dev->tuner_type)
return -ENOTTY;
if (f->tuner)
return -EINVAL;
f->frequency = dev->freq;
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
return 0;
}
static int vidioc_s_frequency(struct file *file, void *priv,
const struct v4l2_frequency *f)
{
struct tm6000_fh *fh = priv;
struct tm6000_core *dev = fh->dev;
if (UNSET == dev->tuner_type)
return -ENOTTY;
if (f->tuner != 0)
return -EINVAL;
dev->freq = f->frequency;
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
return 0;
}
static int radio_g_tuner(struct file *file, void *priv,
struct v4l2_tuner *t)
{
struct tm6000_fh *fh = file->private_data;
struct tm6000_core *dev = fh->dev;
if (0 != t->index)
return -EINVAL;
memset(t, 0, sizeof(*t));
strcpy(t->name, "Radio");
t->type = V4L2_TUNER_RADIO;
t->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
t->rxsubchans = V4L2_TUNER_SUB_STEREO;
t->audmode = V4L2_TUNER_MODE_STEREO;
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
return 0;
}
static int radio_s_tuner(struct file *file, void *priv,
const struct v4l2_tuner *t)
{
struct tm6000_fh *fh = file->private_data;
struct tm6000_core *dev = fh->dev;
if (0 != t->index)
return -EINVAL;
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
return 0;
}
/* ------------------------------------------------------------------
File operations for the device
------------------------------------------------------------------*/
static int __tm6000_open(struct file *file)
{
struct video_device *vdev = video_devdata(file);
struct tm6000_core *dev = video_drvdata(file);
struct tm6000_fh *fh;
enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
int rc;
int radio = 0;
dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
video_device_node_name(vdev));
switch (vdev->vfl_type) {
case VFL_TYPE_GRABBER:
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
break;
case VFL_TYPE_VBI:
type = V4L2_BUF_TYPE_VBI_CAPTURE;
break;
case VFL_TYPE_RADIO:
radio = 1;
break;
}
/* If more than one user, mutex should be added */
dev->users++;
dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n",
video_device_node_name(vdev), v4l2_type_names[type],
dev->users);
/* allocate + initialize per filehandle data */
fh = kzalloc(sizeof(*fh), GFP_KERNEL);
if (NULL == fh) {
dev->users--;
return -ENOMEM;
}
v4l2_fh_init(&fh->fh, vdev);
file->private_data = fh;
fh->dev = dev;
fh->radio = radio;
dev->radio = radio;
fh->type = type;
dev->fourcc = format[0].fourcc;
fh->fmt = format_by_fourcc(dev->fourcc);
tm6000_get_std_res(dev);
fh->width = dev->width;
fh->height = dev->height;
dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=0x%08lx, dev=0x%08lx, "
"dev->vidq=0x%08lx\n",
(unsigned long)fh, (unsigned long)dev,
(unsigned long)&dev->vidq);
dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
"queued=%d\n", list_empty(&dev->vidq.queued));
dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
"active=%d\n", list_empty(&dev->vidq.active));
/* initialize hardware on analog mode */
rc = tm6000_init_analog_mode(dev);
if (rc < 0)
return rc;
dev->mode = TM6000_MODE_ANALOG;
if (!fh->radio) {
videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
NULL, &dev->slock,
fh->type,
V4L2_FIELD_INTERLACED,
sizeof(struct tm6000_buffer), fh, &dev->lock);
} else {
dprintk(dev, V4L2_DEBUG_OPEN, "video_open: setting radio device\n");
tm6000_set_audio_rinput(dev);
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
tm6000_prepare_isoc(dev);
tm6000_start_thread(dev);
}
v4l2_fh_add(&fh->fh);
return 0;
}
static int tm6000_open(struct file *file)
{
struct video_device *vdev = video_devdata(file);
int res;
mutex_lock(vdev->lock);
res = __tm6000_open(file);
mutex_unlock(vdev->lock);
return res;
}
static ssize_t
tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
{
struct tm6000_fh *fh = file->private_data;
struct tm6000_core *dev = fh->dev;
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
int res;
if (!res_get(fh->dev, fh, true))
return -EBUSY;
if (mutex_lock_interruptible(&dev->lock))
return -ERESTARTSYS;
res = videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
file->f_flags & O_NONBLOCK);
mutex_unlock(&dev->lock);
return res;
}
return 0;
}
static unsigned int
__tm6000_poll(struct file *file, struct poll_table_struct *wait)
{
unsigned long req_events = poll_requested_events(wait);
struct tm6000_fh *fh = file->private_data;
struct tm6000_buffer *buf;
int res = 0;
if (v4l2_event_pending(&fh->fh))
res = POLLPRI;
else if (req_events & POLLPRI)
poll_wait(file, &fh->fh.wait, wait);
if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
return res | POLLERR;
if (!!is_res_streaming(fh->dev, fh))
return res | POLLERR;
if (!is_res_read(fh->dev, fh)) {
/* streaming capture */
if (list_empty(&fh->vb_vidq.stream))
return res | POLLERR;
buf = list_entry(fh->vb_vidq.stream.next, struct tm6000_buffer, vb.stream);
poll_wait(file, &buf->vb.done, wait);
if (buf->vb.state == VIDEOBUF_DONE ||
buf->vb.state == VIDEOBUF_ERROR)
return res | POLLIN | POLLRDNORM;
} else if (req_events & (POLLIN | POLLRDNORM)) {
/* read() capture */
return res | videobuf_poll_stream(file, &fh->vb_vidq, wait);
}
return res;
}
static unsigned int tm6000_poll(struct file *file, struct poll_table_struct *wait)
{
struct tm6000_fh *fh = file->private_data;
struct tm6000_core *dev = fh->dev;
unsigned int res;
mutex_lock(&dev->lock);
res = __tm6000_poll(file, wait);
mutex_unlock(&dev->lock);
return res;
}
static int tm6000_release(struct file *file)
{
struct tm6000_fh *fh = file->private_data;
struct tm6000_core *dev = fh->dev;
struct video_device *vdev = video_devdata(file);
dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n",
video_device_node_name(vdev), dev->users);
mutex_lock(&dev->lock);
dev->users--;
res_free(dev, fh);
if (!dev->users) {
tm6000_uninit_isoc(dev);
/* Stop interrupt USB pipe */
tm6000_ir_int_stop(dev);
usb_reset_configuration(dev->udev);
if (dev->int_in.endp)
usb_set_interface(dev->udev,
dev->isoc_in.bInterfaceNumber, 2);
else
usb_set_interface(dev->udev,
dev->isoc_in.bInterfaceNumber, 0);
/* Start interrupt USB pipe */
tm6000_ir_int_start(dev);
if (!fh->radio)
videobuf_mmap_free(&fh->vb_vidq);
}
v4l2_fh_del(&fh->fh);
v4l2_fh_exit(&fh->fh);
kfree(fh);
mutex_unlock(&dev->lock);
return 0;
}
static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
{
struct tm6000_fh *fh = file->private_data;
struct tm6000_core *dev = fh->dev;
int res;
if (mutex_lock_interruptible(&dev->lock))
return -ERESTARTSYS;
res = videobuf_mmap_mapper(&fh->vb_vidq, vma);
mutex_unlock(&dev->lock);
return res;
}
static struct v4l2_file_operations tm6000_fops = {
.owner = THIS_MODULE,
.open = tm6000_open,
.release = tm6000_release,
.unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
.read = tm6000_read,
.poll = tm6000_poll,
.mmap = tm6000_mmap,
};
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,
.vidioc_s_std = vidioc_s_std,
.vidioc_g_std = vidioc_g_std,
.vidioc_enum_input = vidioc_enum_input,
.vidioc_g_input = vidioc_g_input,
.vidioc_s_input = vidioc_s_input,
.vidioc_g_tuner = vidioc_g_tuner,
.vidioc_s_tuner = vidioc_s_tuner,
.vidioc_g_frequency = vidioc_g_frequency,
.vidioc_s_frequency = vidioc_s_frequency,
.vidioc_streamon = vidioc_streamon,
.vidioc_streamoff = vidioc_streamoff,
.vidioc_reqbufs = vidioc_reqbufs,
.vidioc_querybuf = vidioc_querybuf,
.vidioc_qbuf = vidioc_qbuf,
.vidioc_dqbuf = vidioc_dqbuf,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static struct video_device tm6000_template = {
.name = "tm6000",
.fops = &tm6000_fops,
.ioctl_ops = &video_ioctl_ops,
.release = video_device_release,
.tvnorms = TM6000_STD,
};
static const struct v4l2_file_operations radio_fops = {
.owner = THIS_MODULE,
.open = tm6000_open,
.poll = v4l2_ctrl_poll,
.release = tm6000_release,
.unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops radio_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_g_tuner = radio_g_tuner,
.vidioc_s_tuner = radio_s_tuner,
.vidioc_g_frequency = vidioc_g_frequency,
.vidioc_s_frequency = vidioc_s_frequency,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static struct video_device tm6000_radio_template = {
.name = "tm6000",
.fops = &radio_fops,
.ioctl_ops = &radio_ioctl_ops,
};
/* -----------------------------------------------------------------
* Initialization and module stuff
* ------------------------------------------------------------------
*/
static struct video_device *vdev_init(struct tm6000_core *dev,
const struct video_device
*template, const char *type_name)
{
struct video_device *vfd;
vfd = video_device_alloc();
if (NULL == vfd)
return NULL;
*vfd = *template;
vfd->v4l2_dev = &dev->v4l2_dev;
vfd->release = video_device_release;
vfd->debug = tm6000_debug;
vfd->lock = &dev->lock;
set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
video_set_drvdata(vfd, dev);
return vfd;
}
int tm6000_v4l2_register(struct tm6000_core *dev)
{
int ret = 0;
v4l2_ctrl_handler_init(&dev->ctrl_handler, 6);
v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 2);
v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
V4L2_CID_AUDIO_VOLUME, -15, 15, 1, 0);
v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
V4L2_CID_BRIGHTNESS, 0, 255, 1, 54);
v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
V4L2_CID_CONTRAST, 0, 255, 1, 119);
v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
V4L2_CID_SATURATION, 0, 255, 1, 112);
v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
V4L2_CID_HUE, -128, 127, 1, 0);
v4l2_ctrl_add_handler(&dev->ctrl_handler,
&dev->radio_ctrl_handler, NULL);
if (dev->radio_ctrl_handler.error)
ret = dev->radio_ctrl_handler.error;
if (!ret && dev->ctrl_handler.error)
ret = dev->ctrl_handler.error;
if (ret)
goto free_ctrl;
dev->vfd = vdev_init(dev, &tm6000_template, "video");
if (!dev->vfd) {
printk(KERN_INFO "%s: can't register video device\n",
dev->name);
ret = -ENOMEM;
goto free_ctrl;
}
dev->vfd->ctrl_handler = &dev->ctrl_handler;
/* init video dma queues */
INIT_LIST_HEAD(&dev->vidq.active);
INIT_LIST_HEAD(&dev->vidq.queued);
ret = video_register_device(dev->vfd, VFL_TYPE_GRABBER, video_nr);
if (ret < 0) {
printk(KERN_INFO "%s: can't register video device\n",
dev->name);
video_device_release(dev->vfd);
dev->vfd = NULL;
goto free_ctrl;
}
printk(KERN_INFO "%s: registered device %s\n",
dev->name, video_device_node_name(dev->vfd));
if (dev->caps.has_radio) {
dev->radio_dev = vdev_init(dev, &tm6000_radio_template,
"radio");
if (!dev->radio_dev) {
printk(KERN_INFO "%s: can't register radio device\n",
dev->name);
ret = -ENXIO;
goto unreg_video;
}
dev->radio_dev->ctrl_handler = &dev->radio_ctrl_handler;
ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
radio_nr);
if (ret < 0) {
printk(KERN_INFO "%s: can't register radio device\n",
dev->name);
video_device_release(dev->radio_dev);
goto unreg_video;
}
printk(KERN_INFO "%s: registered device %s\n",
dev->name, video_device_node_name(dev->radio_dev));
}
printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
return ret;
unreg_video:
video_unregister_device(dev->vfd);
free_ctrl:
v4l2_ctrl_handler_free(&dev->ctrl_handler);
v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
return ret;
}
int tm6000_v4l2_unregister(struct tm6000_core *dev)
{
video_unregister_device(dev->vfd);
/* if URB buffers are still allocated free them now */
tm6000_free_urb_buffers(dev);
if (dev->radio_dev) {
if (video_is_registered(dev->radio_dev))
video_unregister_device(dev->radio_dev);
else
video_device_release(dev->radio_dev);
dev->radio_dev = NULL;
}
return 0;
}
int tm6000_v4l2_exit(void)
{
return 0;
}
module_param(video_nr, int, 0);
MODULE_PARM_DESC(video_nr, "Allow changing video device number");
module_param_named(debug, tm6000_debug, int, 0444);
MODULE_PARM_DESC(debug, "activates debug info");
module_param(vid_limit, int, 0644);
MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
module_param(keep_urb, bool, 0);
MODULE_PARM_DESC(keep_urb, "Keep urb buffers allocated even when the device is closed by the user");
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