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gfiber / kernel / skids / ea0ece8e0fec89cd0c162d6962ed11b5f1115d70 / . / drivers / staging / tm6000 / tm6000-video.c
blob: 56fa371e08c89e21c1b7eed1e3afd6ccad7b8820 [file] [log] [blame]
/*
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/version.h>
#include <linux/usb.h>
#include <linux/videodev2.h>
#include <media/v4l2-ioctl.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_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 */
/* Debug level */
int tm6000_debug;
/* supported controls */
static struct v4l2_queryctrl tm6000_qctrl[] = {
{
.id = V4L2_CID_BRIGHTNESS,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Brightness",
.minimum = 0,
.maximum = 255,
.step = 1,
.default_value = 54,
.flags = 0,
}, {
.id = V4L2_CID_CONTRAST,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Contrast",
.minimum = 0,
.maximum = 255,
.step = 0x1,
.default_value = 119,
.flags = 0,
}, {
.id = V4L2_CID_SATURATION,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Saturation",
.minimum = 0,
.maximum = 255,
.step = 0x1,
.default_value = 112,
.flags = 0,
}, {
.id = V4L2_CID_HUE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Hue",
.minimum = -128,
.maximum = 127,
.step = 0x1,
.default_value = 0,
.flags = 0,
}
};
static int qctl_regs[ARRAY_SIZE(tm6000_qctrl)];
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);
char *outp;
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);
if (!buf)
return;
/* Cleans up buffer - Usefull for testing for frame/URB loss */
outp = videobuf_to_vmalloc(&(*buf)->vb);
// if (outp)
// memset(outp, 0, (*buf)->vb.size);
return;
}
/*
* 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++;
do_gettimeofday(&buf->vb.ts);
list_del(&buf->vb.queue);
wake_up(&buf->vb.done);
}
const char *tm6000_msg_type[] = {
"unknown(0)", /* 0 */
"video", /* 1 */
"audio", /* 2 */
"vbi", /* 3 */
"pts", /* 4 */
"err", /* 5 */
"unknown(6)", /* 6 */
"unknown(7)", /* 7 */
};
/*
* Identify the tm5600/6000 buffer header type and properly handles
*/
static int copy_packet(struct urb *urb, u32 header, u8 **ptr, u8 *endp,
u8 *out_p, struct tm6000_buffer **buf)
{
struct tm6000_dmaqueue *dma_q = urb->context;
struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
u8 c;
unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0;
int rc = 0;
/* FIXME: move to tm6000-isoc */
static int last_line = -2, start_line = -2, last_field = -2;
/* FIXME: this is the hardcoded window size
*/
unsigned int linewidth = (*buf)->vb.width << 1;
if (!dev->isoc_ctl.cmd) {
c = (header >> 24) & 0xff;
/* 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 header fields */
if(size > TM6000_URB_MSG_LEN)
size = TM6000_URB_MSG_LEN;
if (cmd == TM6000_URB_MSG_VIDEO) {
if ((block+1)*TM6000_URB_MSG_LEN>linewidth)
cmd = TM6000_URB_MSG_ERR;
/* FIXME: Mounts the image as field0+field1
* It should, instead, check if the user selected
* entrelaced or non-entrelaced mode
*/
pos = ((line << 1) - field - 1) * linewidth +
block * TM6000_URB_MSG_LEN;
/* Don't allow to write out of the buffer */
if (pos+TM6000_URB_MSG_LEN > (*buf)->vb.size) {
dprintk(dev, V4L2_DEBUG_ISOC,
"ERR: size=%d, num=%d, line=%d, "
"field=%d\n",
size, block, line, field);
cmd = TM6000_URB_MSG_ERR;
}
} else {
pos=0;
}
/* Prints debug info */
dprintk(dev, V4L2_DEBUG_ISOC, "size=%d, num=%d, "
" line=%d, field=%d\n",
size, block, line, field);
if ((last_line!=line)&&(last_line+1!=line) &&
(cmd != TM6000_URB_MSG_ERR) ) {
if (cmd != TM6000_URB_MSG_VIDEO) {
dprintk(dev, V4L2_DEBUG_ISOC, "cmd=%d, "
"size=%d, num=%d, line=%d, field=%d\n",
cmd, size, block, line, field);
}
if (start_line<0)
start_line=last_line;
/* Prints debug info */
dprintk(dev, V4L2_DEBUG_ISOC, "lines= %d-%d, "
"field=%d\n",
start_line, last_line, field);
if ((start_line<6 && last_line>200) &&
(last_field != field) ) {
dev->isoc_ctl.nfields++;
if (dev->isoc_ctl.nfields>=2) {
dev->isoc_ctl.nfields=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)
return rc;
out_p = videobuf_to_vmalloc(&((*buf)->vb));
if (!out_p)
return rc;
pos = dev->isoc_ctl.pos = 0;
}
}
start_line=line;
last_field=field;
}
if (cmd == TM6000_URB_MSG_VIDEO)
last_line = line;
pktsize = TM6000_URB_MSG_LEN;
} 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;
}
cpysize = (endp-(*ptr) > size) ? size : endp - *ptr;
if (cpysize) {
/* handles each different URB message */
switch(cmd) {
case TM6000_URB_MSG_VIDEO:
/* Fills video buffer */
memcpy(&out_p[pos], *ptr, cpysize);
break;
case TM6000_URB_MSG_PTS:
break;
case TM6000_URB_MSG_AUDIO:
/* Need some code to process audio */
printk ("%ld: cmd=%s, size=%d\n", jiffies,
tm6000_msg_type[cmd],size);
break;
case TM6000_URB_MSG_VBI:
break;
default:
dprintk (dev, V4L2_DEBUG_ISOC, "cmd=%s, size=%d\n",
tm6000_msg_type[cmd],size);
}
}
if (cpysize<size) {
/* 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.pktsize = pktsize-cpysize;
(*ptr)+=cpysize;
} else {
dev->isoc_ctl.cmd = 0;
(*ptr)+=pktsize;
}
return rc;
}
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;
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;
for (ptr=data; ptr<endp;) {
if (!dev->isoc_ctl.cmd) {
u8 *p=(u8 *)&dev->isoc_ctl.tmp_buf;
/* FIXME: This seems very complex
* It just recovers up to 3 bytes of the header that
* might be at the previous packet
*/
if (dev->isoc_ctl.tmp_buf_len) {
while (dev->isoc_ctl.tmp_buf_len) {
if ( *(ptr+3-dev->isoc_ctl.tmp_buf_len) == 0x47) {
break;
}
p++;
dev->isoc_ctl.tmp_buf_len--;
}
if (dev->isoc_ctl.tmp_buf_len) {
memcpy(&header, p,
dev->isoc_ctl.tmp_buf_len);
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;
goto HEADER;
}
}
/* Seek for sync */
for (;ptr<endp-3;ptr++) {
if (*(ptr+3)==0x47)
break;
}
if (ptr+3>=endp) {
dev->isoc_ctl.tmp_buf_len=endp-ptr;
memcpy (&dev->isoc_ctl.tmp_buf,ptr,
dev->isoc_ctl.tmp_buf_len);
dev->isoc_ctl.cmd=0;
return rc;
}
/* Get message header */
header=*(unsigned long *)ptr;
ptr+=4;
}
HEADER:
/* Copy or continue last copy */
rc=copy_packet(urb,header,&ptr,endp,outp,&buf);
if (rc<0) {
buf=NULL;
printk(KERN_ERR "tm6000: buffer underrun at %ld\n",
jiffies);
return rc;
}
if (!buf)
return 0;
}
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);
//printk("Copying %d bytes (max=%lu) from %p to %p[%u]\n",cpysize,(*buf)->vb.size,ptr,out_p,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 void inline 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);
struct tm6000_buffer *buf;
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;
if (!dev)
return;
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);
}
/*
* Stop and Deallocate URBs
*/
static void tm6000_uninit_isoc(struct tm6000_core *dev)
{
struct urb *urb;
int i;
dev->isoc_ctl.nfields = -1;
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);
if (dev->isoc_ctl.transfer_buffer[i]) {
usb_free_coherent(dev->udev,
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;
dev->isoc_ctl.num_bufs=0;
}
/*
* Allocate URBs and start IRQ
*/
static int tm6000_prepare_isoc(struct tm6000_core *dev, unsigned int framesize)
{
struct tm6000_dmaqueue *dma_q = &dev->vidq;
int i, j, sb_size, pipe, size, max_packets, num_bufs = 8;
struct urb *urb;
/* De-allocates all pending stuff */
tm6000_uninit_isoc(dev);
usb_set_interface(dev->udev,
dev->isoc_in.bInterfaceNumber,
dev->isoc_in.bAlternateSetting);
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 = ( framesize + size - 1) / size;
if (max_packets > TM6000_MAX_ISO_PACKETS)
max_packets = TM6000_MAX_ISO_PACKETS;
sb_size = max_packets * 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);
/* 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;
dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->udev,
sb_size, GFP_KERNEL, &urb->transfer_dma);
if (!dev->isoc_ctl.transfer_buffer[i]) {
tm6000_err ("unable to allocate %i bytes for transfer"
" buffer %i%s\n",
sb_size, i,
in_interrupt()?" while in int":"");
tm6000_uninit_isoc(dev);
return -ENOMEM;
}
memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
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, urb_init = 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) {
if (0 != (rc = videobuf_iolock(vq, &buf->vb, NULL)))
goto fail;
urb_init = 1;
}
if (!dev->isoc_ctl.num_bufs)
urb_init = 1;
if (urb_init) {
rc = tm6000_prepare_isoc(dev, buf->vb.size);
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 int res_get(struct tm6000_core *dev, struct tm6000_fh *fh)
{
/* is it free? */
mutex_lock(&dev->lock);
if (dev->resources) {
/* no, someone else uses it */
mutex_unlock(&dev->lock);
return 0;
}
/* it's free, grab it */
dev->resources =1;
dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
mutex_unlock(&dev->lock);
return 1;
}
static int res_locked(struct tm6000_core *dev)
{
return (dev->resources);
}
static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
{
mutex_lock(&dev->lock);
dev->resources = 0;
dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
mutex_unlock(&dev->lock);
}
/* ------------------------------------------------------------------
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;
strlcpy(cap->driver, "tm6000", sizeof(cap->driver));
strlcpy(cap->card,"Trident TVMaster TM5600/6000/6010", sizeof(cap->card));
// strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info));
cap->version = TM6000_VERSION;
cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_STREAMING |
V4L2_CAP_TUNER |
V4L2_CAP_READWRITE;
return 0;
}
static int vidioc_enum_fmt_vid_cap (struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
if (unlikely(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.bytesperline =
(f->fmt.pix.width * fh->fmt->depth) >> 3;
f->fmt.pix.sizeimage =
f->fmt.pix.height * f->fmt.pix.bytesperline;
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;
if (field == V4L2_FIELD_ANY) {
// field=V4L2_FIELD_INTERLACED;
field=V4L2_FIELD_SEQ_TB;
} else if (V4L2_FIELD_INTERLACED != field) {
dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Field type invalid.\n");
return -EINVAL;
}
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.bytesperline =
(f->fmt.pix.width * fmt->depth) >> 3;
f->fmt.pix.sizeimage =
f->fmt.pix.height * f->fmt.pix.bytesperline;
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));
}
#ifdef CONFIG_VIDEO_V4L1_COMPAT
static int vidiocgmbuf (struct file *file, void *priv, struct video_mbuf *mbuf)
{
struct tm6000_fh *fh=priv;
return videobuf_cgmbuf (&fh->vb_vidq, mbuf, 8);
}
#endif
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))
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;
rc=tm6000_set_standard (dev, norm);
fh->width = dev->width;
fh->height = dev->height;
if (rc<0)
return rc;
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
return 0;
}
static int vidioc_enum_input (struct file *file, void *priv,
struct v4l2_input *inp)
{
switch (inp->index) {
case TM6000_INPUT_TV:
inp->type = V4L2_INPUT_TYPE_TUNER;
strcpy(inp->name,"Television");
break;
case TM6000_INPUT_COMPOSITE:
inp->type = V4L2_INPUT_TYPE_CAMERA;
strcpy(inp->name,"Composite");
break;
case TM6000_INPUT_SVIDEO:
inp->type = V4L2_INPUT_TYPE_CAMERA;
strcpy(inp->name,"S-Video");
break;
default:
return -EINVAL;
}
inp->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;
char buf[1];
switch (i) {
case TM6000_INPUT_TV:
dev->input=i;
*buf=0;
break;
case TM6000_INPUT_COMPOSITE:
case TM6000_INPUT_SVIDEO:
dev->input=i;
*buf=1;
break;
default:
return -EINVAL;
}
rc=tm6000_read_write_usb (dev, USB_DIR_OUT | USB_TYPE_VENDOR,
REQ_03_SET_GET_MCU_PIN, 0x03, 1, buf, 1);
if (!rc) {
dev->input=i;
rc=vidioc_s_std (file, priv, &dev->vfd->current_norm);
}
return (rc);
}
/* --- controls ---------------------------------------------- */
static int vidioc_queryctrl (struct file *file, void *priv,
struct v4l2_queryctrl *qc)
{
int i;
for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
if (qc->id && qc->id == tm6000_qctrl[i].id) {
memcpy(qc, &(tm6000_qctrl[i]),
sizeof(*qc));
return (0);
}
return -EINVAL;
}
static int vidioc_g_ctrl (struct file *file, void *priv,
struct v4l2_control *ctrl)
{
struct tm6000_fh *fh=priv;
struct tm6000_core *dev = fh->dev;
int val;
/* FIXME: Probably, those won't work! Maybe we need shadow regs */
switch (ctrl->id) {
case V4L2_CID_CONTRAST:
val = tm6000_get_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, 0);
break;
case V4L2_CID_BRIGHTNESS:
val = tm6000_get_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, 0);
return 0;
case V4L2_CID_SATURATION:
val = tm6000_get_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, 0);
return 0;
case V4L2_CID_HUE:
val = tm6000_get_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, 0);
return 0;
default:
return -EINVAL;
}
if (val<0)
return val;
ctrl->value=val;
return 0;
}
static int vidioc_s_ctrl (struct file *file, void *priv,
struct v4l2_control *ctrl)
{
struct tm6000_fh *fh =priv;
struct tm6000_core *dev = fh->dev;
u8 val=ctrl->value;
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 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 (unlikely(UNSET == dev->tuner_type))
return -EINVAL;
if (0 != t->index)
return -EINVAL;
strcpy(t->name, "Television");
t->type = V4L2_TUNER_ANALOG_TV;
t->capability = V4L2_TUNER_CAP_NORM;
t->rangehigh = 0xffffffffUL;
t->rxsubchans = V4L2_TUNER_SUB_MONO;
return 0;
}
static int vidioc_s_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 -EINVAL;
if (0 != t->index)
return -EINVAL;
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 (unlikely(UNSET == dev->tuner_type))
return -EINVAL;
f->type = V4L2_TUNER_ANALOG_TV;
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,
struct v4l2_frequency *f)
{
struct tm6000_fh *fh =priv;
struct tm6000_core *dev = fh->dev;
if (unlikely(f->type != V4L2_TUNER_ANALOG_TV))
return -EINVAL;
if (unlikely(UNSET == dev->tuner_type))
return -EINVAL;
if (unlikely(f->tuner != 0))
return -EINVAL;
// mutex_lock(&dev->lock);
dev->freq = f->frequency;
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
// mutex_unlock(&dev->lock);
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 i,rc;
printk(KERN_INFO "tm6000: open called (dev=%s)\n",
video_device_node_name(vdev));
dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
video_device_node_name(vdev));
/* 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;
}
file->private_data = fh;
fh->dev = dev;
fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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 */
if (dev->mode!=TM6000_MODE_ANALOG) {
rc=tm6000_init_analog_mode (dev);
if (rc<0)
return rc;
/* Put all controls at a sane state */
for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
qctl_regs[i] =tm6000_qctrl[i].default_value;
dev->mode=TM6000_MODE_ANALOG;
}
videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
NULL, &dev->slock,
fh->type,
V4L2_FIELD_INTERLACED,
sizeof(struct tm6000_buffer),fh);
return 0;
}
static ssize_t
tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
{
struct tm6000_fh *fh = file->private_data;
if (fh->type==V4L2_BUF_TYPE_VIDEO_CAPTURE) {
if (res_locked(fh->dev))
return -EBUSY;
return videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
file->f_flags & O_NONBLOCK);
}
return 0;
}
static unsigned int
tm6000_poll(struct file *file, struct poll_table_struct *wait)
{
struct tm6000_fh *fh = file->private_data;
struct tm6000_buffer *buf;
if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
return POLLERR;
if (res_get(fh->dev,fh)) {
/* streaming capture */
if (list_empty(&fh->vb_vidq.stream))
return POLLERR;
buf = list_entry(fh->vb_vidq.stream.next,struct tm6000_buffer,vb.stream);
} else {
/* read() capture */
return videobuf_poll_stream(file, &fh->vb_vidq,
wait);
}
poll_wait(file, &buf->vb.done, wait);
if (buf->vb.state == VIDEOBUF_DONE ||
buf->vb.state == VIDEOBUF_ERROR)
return POLLIN|POLLRDNORM;
return 0;
}
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);
dev->users--;
if (!dev->users) {
tm6000_uninit_isoc(dev);
videobuf_mmap_free(&fh->vb_vidq);
}
kfree (fh);
return 0;
}
static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
{
struct tm6000_fh *fh = file->private_data;
int ret;
ret=videobuf_mmap_mapper(&fh->vb_vidq, vma);
return ret;
}
static struct v4l2_file_operations tm6000_fops = {
.owner = THIS_MODULE,
.open = tm6000_open,
.release = tm6000_release,
.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_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_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,
#ifdef CONFIG_VIDEO_V4L1_COMPAT
.vidiocgmbuf = vidiocgmbuf,
#endif
};
static struct video_device tm6000_template = {
.name = "tm6000",
.fops = &tm6000_fops,
.ioctl_ops = &video_ioctl_ops,
.release = video_device_release,
.tvnorms = TM6000_STD,
.current_norm = V4L2_STD_NTSC_M,
};
/* -----------------------------------------------------------------
Initialization and module stuff
------------------------------------------------------------------*/
int tm6000_v4l2_register(struct tm6000_core *dev)
{
int ret = -1;
struct video_device *vfd;
vfd = video_device_alloc();
if(!vfd) {
return -ENOMEM;
}
dev->vfd = vfd;
/* init video dma queues */
INIT_LIST_HEAD(&dev->vidq.active);
INIT_LIST_HEAD(&dev->vidq.queued);
memcpy (dev->vfd, &tm6000_template, sizeof(*(dev->vfd)));
dev->vfd->debug=tm6000_debug;
vfd->v4l2_dev = &dev->v4l2_dev;
video_set_drvdata(vfd, dev);
ret = video_register_device(dev->vfd, VFL_TYPE_GRABBER, video_nr);
printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
return ret;
}
int tm6000_v4l2_unregister(struct tm6000_core *dev)
{
video_unregister_device(dev->vfd);
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");