| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Mauro Carvalho Chehab | 5673 | 68.06% | 44 | 38.26% |
| Hans Verkuil | 911 | 10.93% | 20 | 17.39% |
| Stefan Ringel | 702 | 8.42% | 15 | 13.04% |
| Dmitry Belimov | 525 | 6.30% | 6 | 5.22% |
| Julian Scheel | 336 | 4.03% | 1 | 0.87% |
| Thierry Reding | 79 | 0.95% | 5 | 4.35% |
| Michel Ludwig | 35 | 0.42% | 4 | 3.48% |
| Kees Cook | 13 | 0.16% | 2 | 1.74% |
| Sebastian Andrzej Siewior | 10 | 0.12% | 1 | 0.87% |
| Linus Torvalds | 9 | 0.11% | 1 | 0.87% |
| Colin Ian King | 8 | 0.10% | 2 | 1.74% |
| Ruslan Pisarev | 7 | 0.08% | 1 | 0.87% |
| Curtis McEnroe | 6 | 0.07% | 1 | 0.87% |
| Al Viro | 5 | 0.06% | 2 | 1.74% |
| Ezequiel García | 4 | 0.05% | 1 | 0.87% |
| Jarod Wilson | 2 | 0.02% | 1 | 0.87% |
| Julia Lawall | 2 | 0.02% | 2 | 1.74% |
| Christophe Jaillet | 2 | 0.02% | 1 | 0.87% |
| Santosh Kumar Singh | 2 | 0.02% | 1 | 0.87% |
| Gerd Knorr | 1 | 0.01% | 1 | 0.87% |
| Bhumika Goyal | 1 | 0.01% | 1 | 0.87% |
| Laurent Pinchart | 1 | 0.01% | 1 | 0.87% |
| SF Markus Elfring | 1 | 0.01% | 1 | 0.87% |
| Total | 8335 | 115 |
// SPDX-License-Identifier: GPL-2.0 // tm6000-video.c - driver for TM5600/TM6000/TM6010 USB video capture devices // // Copyright (c) 2006-2007 Mauro Carvalho Chehab <mchehab@kernel.org> // // Copyright (c) 2007 Michel Ludwig <michel.ludwig@gmail.com> // - Fixed module load/unload #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[] = { { .fourcc = V4L2_PIX_FMT_YUYV, .depth = 16, }, { .fourcc = V4L2_PIX_FMT_UYVY, .depth = 16, }, { .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++; buf->vb.ts = ktime_get_ns(); 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 header 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 synchronously"; break; case -ECONNRESET: errmsg = "unlinked asynchronously"; 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); unsigned long flags; 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_irqsave(&dev->slock, flags); tm6000_isoc_copy(urb); spin_unlock_irqrestore(&dev->slock, flags); /* 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) return 0; dev->urb_buffer = kmalloc_array(num_bufs, sizeof(*dev->urb_buffer), GFP_KERNEL); if (!dev->urb_buffer) return -ENOMEM; dev->urb_dma = kmalloc_array(num_bufs, sizeof(*dev->urb_dma), GFP_KERNEL); if (!dev->urb_dma) 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) 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); 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_array(num_bufs, sizeof(void *), GFP_KERNEL); if (!dev->isoc_ctl.urb) return -ENOMEM; dev->isoc_ctl.transfer_buffer = kmalloc_array(num_bufs, sizeof(void *), GFP_KERNEL); if (!dev->isoc_ctl.transfer_buffer) { 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 (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_uninit_isoc(dev); tm6000_free_urb_buffers(dev); 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; /* 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 const 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; strscpy(cap->driver, "tm6000", sizeof(cap->driver)); strscpy(cap->card, "Trident TM5600/6000/6010", sizeof(cap->card)); usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | V4L2_CAP_DEVICE_CAPS; if (dev->tuner_type != TUNER_ABSENT) cap->capabilities |= V4L2_CAP_TUNER; if (dev->caps.has_radio) cap->capabilities |= V4L2_CAP_RADIO; 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; 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; 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, 2, "Fourcc format (0x%08x) invalid.\n", f->fmt.pix.pixelformat); return -EINVAL; } 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.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; strscpy(i->name, iname[dev->vinput[n].type], sizeof(i->name)); 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; strscpy(t->name, "Television", sizeof(t->name)); 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)); strscpy(t->name, "Radio", sizeof(t->name)); 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_VIDEO: 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; default: return -EINVAL; } /* 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=%p, dev=%p, dev->vidq=%p\n", fh, dev, &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) { v4l2_fh_exit(&fh->fh); kfree(fh); 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 __poll_t __tm6000_poll(struct file *file, struct poll_table_struct *wait) { __poll_t req_events = poll_requested_events(wait); struct tm6000_fh *fh = file->private_data; struct tm6000_buffer *buf; __poll_t res = 0; if (v4l2_event_pending(&fh->fh)) res = EPOLLPRI; else if (req_events & EPOLLPRI) poll_wait(file, &fh->fh.wait, wait); if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) return res | EPOLLERR; if (!!is_res_streaming(fh->dev, fh)) return res | EPOLLERR; if (!is_res_read(fh->dev, fh)) { /* streaming capture */ if (list_empty(&fh->vb_vidq.stream)) return res | EPOLLERR; 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 | EPOLLIN | EPOLLRDNORM; } else if (req_events & (EPOLLIN | EPOLLRDNORM)) { /* read() capture */ return res | videobuf_poll_stream(file, &fh->vb_vidq, wait); } return res; } static __poll_t tm6000_poll(struct file *file, struct poll_table_struct *wait) { struct tm6000_fh *fh = file->private_data; struct tm6000_core *dev = fh->dev; __poll_t 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 const 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_empty, .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 void vdev_init(struct tm6000_core *dev, struct video_device *vfd, const struct video_device *template, const char *type_name) { *vfd = *template; vfd->v4l2_dev = &dev->v4l2_dev; vfd->release = video_device_release_empty; vfd->lock = &dev->lock; snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name); video_set_drvdata(vfd, dev); } 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, false); 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; vdev_init(dev, &dev->vfd, &tm6000_template, "video"); dev->vfd.ctrl_handler = &dev->ctrl_handler; dev->vfd.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING | V4L2_CAP_READWRITE; if (dev->tuner_type != TUNER_ABSENT) dev->vfd.device_caps |= V4L2_CAP_TUNER; /* init video dma queues */ INIT_LIST_HEAD(&dev->vidq.active); INIT_LIST_HEAD(&dev->vidq.queued); ret = video_register_device(&dev->vfd, VFL_TYPE_VIDEO, video_nr); if (ret < 0) { printk(KERN_INFO "%s: can't register video device\n", dev->name); goto free_ctrl; } printk(KERN_INFO "%s: registered device %s\n", dev->name, video_device_node_name(&dev->vfd)); if (dev->caps.has_radio) { vdev_init(dev, &dev->radio_dev, &tm6000_radio_template, "radio"); dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler; dev->radio_dev.device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER; 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); 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); video_unregister_device(&dev->radio_dev); 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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