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