diff options
Diffstat (limited to 'drivers/staging/tm6000/tm6000-video.c')
| -rw-r--r-- | drivers/staging/tm6000/tm6000-video.c | 1565 |
1 files changed, 0 insertions, 1565 deletions
diff --git a/drivers/staging/tm6000/tm6000-video.c b/drivers/staging/tm6000/tm6000-video.c deleted file mode 100644 index 56fa371e08c..00000000000 --- a/drivers/staging/tm6000/tm6000-video.c +++ /dev/null @@ -1,1565 +0,0 @@ -/* - 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"); - |