/* * Auvitek AU0828 USB Bridge (Analog video support) * * Copyright (C) 2009 Devin Heitmueller * Copyright (C) 2005-2008 Auvitek International, Ltd. * * 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; either version 2 * of the License, or (at your option) any later version. * * 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., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ /* Developer Notes: * * VBI support is not yet working * The hardware scaler supported is unimplemented * AC97 audio support is unimplemented (only i2s audio mode) * */ #include #include #include #include #include #include #include #include #include #include "au0828.h" #include "au0828-reg.h" static LIST_HEAD(au0828_devlist); static DEFINE_MUTEX(au0828_sysfs_lock); #define AU0828_VERSION_CODE KERNEL_VERSION(0, 0, 1) /* ------------------------------------------------------------------ Videobuf operations ------------------------------------------------------------------*/ static unsigned int isoc_debug; module_param(isoc_debug, int, 0644); MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]"); #define au0828_isocdbg(fmt, arg...) \ do {\ if (isoc_debug) { \ printk(KERN_INFO "au0828 %s :"fmt, \ __func__ , ##arg); \ } \ } while (0) static inline void print_err_status(struct au0828_dev *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) { au0828_isocdbg("URB status %d [%s].\n", status, errmsg); } else { au0828_isocdbg("URB packet %d, status %d [%s].\n", packet, status, errmsg); } } static int check_dev(struct au0828_dev *dev) { if (dev->dev_state & DEV_DISCONNECTED) { printk(KERN_INFO "v4l2 ioctl: device not present\n"); return -ENODEV; } if (dev->dev_state & DEV_MISCONFIGURED) { printk(KERN_INFO "v4l2 ioctl: device is misconfigured; " "close and open it again\n"); return -EIO; } return 0; } /* * IRQ callback, called by URB callback */ static void au0828_irq_callback(struct urb *urb) { struct au0828_dmaqueue *dma_q = urb->context; struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq); int rc, i; switch (urb->status) { case 0: /* success */ case -ETIMEDOUT: /* NAK */ break; case -ECONNRESET: /* kill */ case -ENOENT: case -ESHUTDOWN: au0828_isocdbg("au0828_irq_callback called: status kill\n"); return; default: /* unknown error */ au0828_isocdbg("urb completition error %d.\n", urb->status); break; } /* Copy data from URB */ spin_lock(&dev->slock); rc = dev->isoc_ctl.isoc_copy(dev, 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 = 0; urb->status = usb_submit_urb(urb, GFP_ATOMIC); if (urb->status) { au0828_isocdbg("urb resubmit failed (error=%i)\n", urb->status); } } /* * Stop and Deallocate URBs */ void au0828_uninit_isoc(struct au0828_dev *dev) { struct urb *urb; int i; au0828_isocdbg("au0828: called au0828_uninit_isoc\n"); dev->isoc_ctl.nfields = -1; for (i = 0; i < dev->isoc_ctl.num_bufs; i++) { urb = dev->isoc_ctl.urb[i]; if (urb) { if (!irqs_disabled()) usb_kill_urb(urb); else usb_unlink_urb(urb); if (dev->isoc_ctl.transfer_buffer[i]) { usb_buffer_free(dev->usbdev, 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; } /* * Allocate URBs and start IRQ */ int au0828_init_isoc(struct au0828_dev *dev, int max_packets, int num_bufs, int max_pkt_size, int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb)) { struct au0828_dmaqueue *dma_q = &dev->vidq; int i; int sb_size, pipe; struct urb *urb; int j, k; int rc; au0828_isocdbg("au0828: called au0828_prepare_isoc\n"); /* De-allocates all pending stuff */ au0828_uninit_isoc(dev); dev->isoc_ctl.isoc_copy = isoc_copy; dev->isoc_ctl.num_bufs = num_bufs; dev->isoc_ctl.urb = kzalloc(sizeof(void *)*num_bufs, GFP_KERNEL); if (!dev->isoc_ctl.urb) { au0828_isocdbg("cannot alloc memory for usb buffers\n"); return -ENOMEM; } dev->isoc_ctl.transfer_buffer = kzalloc(sizeof(void *)*num_bufs, GFP_KERNEL); if (!dev->isoc_ctl.transfer_buffer) { au0828_isocdbg("cannot allocate memory for usb transfer\n"); kfree(dev->isoc_ctl.urb); return -ENOMEM; } dev->isoc_ctl.max_pkt_size = max_pkt_size; dev->isoc_ctl.buf = NULL; sb_size = max_packets * dev->isoc_ctl.max_pkt_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) { au0828_isocdbg("cannot alloc isoc_ctl.urb %i\n", i); au0828_uninit_isoc(dev); return -ENOMEM; } dev->isoc_ctl.urb[i] = urb; dev->isoc_ctl.transfer_buffer[i] = usb_buffer_alloc(dev->usbdev, sb_size, GFP_KERNEL, &urb->transfer_dma); if (!dev->isoc_ctl.transfer_buffer[i]) { printk("unable to allocate %i bytes for transfer" " buffer %i%s\n", sb_size, i, in_interrupt() ? " while in int" : ""); au0828_uninit_isoc(dev); return -ENOMEM; } memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size); pipe = usb_rcvisocpipe(dev->usbdev, dev->isoc_in_endpointaddr), usb_fill_int_urb(urb, dev->usbdev, pipe, dev->isoc_ctl.transfer_buffer[i], sb_size, au0828_irq_callback, dma_q, 1); urb->number_of_packets = max_packets; urb->transfer_flags = URB_ISO_ASAP; k = 0; for (j = 0; j < max_packets; j++) { urb->iso_frame_desc[j].offset = k; urb->iso_frame_desc[j].length = dev->isoc_ctl.max_pkt_size; k += dev->isoc_ctl.max_pkt_size; } } init_waitqueue_head(&dma_q->wq); /* submit urbs and enables IRQ */ for (i = 0; i < dev->isoc_ctl.num_bufs; i++) { rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC); if (rc) { au0828_isocdbg("submit of urb %i failed (error=%i)\n", i, rc); au0828_uninit_isoc(dev); return rc; } } return 0; } /* * Announces that a buffer were filled and request the next */ static inline void buffer_filled(struct au0828_dev *dev, struct au0828_dmaqueue *dma_q, struct au0828_buffer *buf) { /* Advice that buffer was filled */ au0828_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i); buf->vb.state = VIDEOBUF_DONE; buf->vb.field_count++; do_gettimeofday(&buf->vb.ts); dev->isoc_ctl.buf = NULL; list_del(&buf->vb.queue); wake_up(&buf->vb.done); } /* * Identify the buffer header type and properly handles */ static void au0828_copy_video(struct au0828_dev *dev, struct au0828_dmaqueue *dma_q, struct au0828_buffer *buf, unsigned char *p, unsigned char *outp, unsigned long len) { void *fieldstart, *startwrite, *startread; int linesdone, currlinedone, offset, lencopy, remain; int bytesperline = dev->width << 1; /* Assumes 16-bit depth @@@@ */ if (dma_q->pos + len > buf->vb.size) len = buf->vb.size - dma_q->pos; startread = p; remain = len; /* Interlaces frame */ if (buf->top_field) fieldstart = outp; else fieldstart = outp + bytesperline; linesdone = dma_q->pos / bytesperline; currlinedone = dma_q->pos % bytesperline; offset = linesdone * bytesperline * 2 + currlinedone; startwrite = fieldstart + offset; lencopy = bytesperline - currlinedone; lencopy = lencopy > remain ? remain : lencopy; if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) { au0828_isocdbg("Overflow of %zi bytes past buffer end (1)\n", ((char *)startwrite + lencopy) - ((char *)outp + buf->vb.size)); remain = (char *)outp + buf->vb.size - (char *)startwrite; lencopy = remain; } if (lencopy <= 0) return; memcpy(startwrite, startread, lencopy); remain -= lencopy; while (remain > 0) { startwrite += lencopy + bytesperline; startread += lencopy; if (bytesperline > remain) lencopy = remain; else lencopy = bytesperline; if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) { au0828_isocdbg("Overflow %zi bytes past buf end (2)\n", ((char *)startwrite + lencopy) - ((char *)outp + buf->vb.size)); lencopy = remain = (char *)outp + buf->vb.size - (char *)startwrite; } if (lencopy <= 0) break; memcpy(startwrite, startread, lencopy); remain -= lencopy; } if (offset > 1440) { /* We have enough data to check for greenscreen */ if (outp[0] < 0x60 && outp[1440] < 0x60) dev->greenscreen_detected = 1; } dma_q->pos += len; } /* * video-buf generic routine to get the next available buffer */ static inline void get_next_buf(struct au0828_dmaqueue *dma_q, struct au0828_buffer **buf) { struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq); if (list_empty(&dma_q->active)) { au0828_isocdbg("No active queue to serve\n"); dev->isoc_ctl.buf = NULL; *buf = NULL; return; } /* Get the next buffer */ *buf = list_entry(dma_q->active.next, struct au0828_buffer, vb.queue); dev->isoc_ctl.buf = *buf; return; } /* * Controls the isoc copy of each urb packet */ static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb) { struct au0828_buffer *buf; struct au0828_dmaqueue *dma_q = urb->context; unsigned char *outp = NULL; int i, len = 0, rc = 1; unsigned char *p; unsigned char fbyte; if (!dev) return 0; if ((dev->dev_state & DEV_DISCONNECTED) || (dev->dev_state & DEV_MISCONFIGURED)) return 0; if (urb->status < 0) { print_err_status(dev, -1, urb->status); if (urb->status == -ENOENT) return 0; } buf = dev->isoc_ctl.buf; if (buf != NULL) outp = videobuf_to_vmalloc(&buf->vb); for (i = 0; i < urb->number_of_packets; i++) { int status = urb->iso_frame_desc[i].status; if (status < 0) { print_err_status(dev, i, status); if (urb->iso_frame_desc[i].status != -EPROTO) continue; } if (urb->iso_frame_desc[i].actual_length <= 0) continue; if (urb->iso_frame_desc[i].actual_length > dev->max_pkt_size) { au0828_isocdbg("packet bigger than packet size"); continue; } p = urb->transfer_buffer + urb->iso_frame_desc[i].offset; fbyte = p[0]; len = urb->iso_frame_desc[i].actual_length - 4; p += 4; if (fbyte & 0x80) { len -= 4; p += 4; au0828_isocdbg("Video frame %s\n", (fbyte & 0x40) ? "odd" : "even"); if (!(fbyte & 0x40)) { if (buf != NULL) buffer_filled(dev, dma_q, buf); get_next_buf(dma_q, &buf); if (buf == NULL) outp = NULL; else outp = videobuf_to_vmalloc(&buf->vb); } if (buf != NULL) { if (fbyte & 0x40) buf->top_field = 1; else buf->top_field = 0; } dma_q->pos = 0; } if (buf != NULL) au0828_copy_video(dev, dma_q, buf, p, outp, len); } return rc; } static int buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) { struct au0828_fh *fh = vq->priv_data; *size = (fh->dev->width * fh->dev->height * 16 + 7) >> 3; if (0 == *count) *count = AU0828_DEF_BUF; if (*count < AU0828_MIN_BUF) *count = AU0828_MIN_BUF; return 0; } /* This is called *without* dev->slock held; please keep it that way */ static void free_buffer(struct videobuf_queue *vq, struct au0828_buffer *buf) { struct au0828_fh *fh = vq->priv_data; struct au0828_dev *dev = fh->dev; unsigned long flags = 0; 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 au0828_fh *fh = vq->priv_data; struct au0828_buffer *buf = container_of(vb, struct au0828_buffer, vb); struct au0828_dev *dev = fh->dev; int rc = 0, urb_init = 0; buf->vb.size = (fh->dev->width * fh->dev->height * 16 + 7) >> 3; if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) return -EINVAL; buf->vb.width = dev->width; buf->vb.height = dev->height; buf->vb.field = field; if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { rc = videobuf_iolock(vq, &buf->vb, NULL); if (rc < 0) { printk(KERN_INFO "videobuf_iolock failed\n"); goto fail; } } if (!dev->isoc_ctl.num_bufs) urb_init = 1; if (urb_init) { rc = au0828_init_isoc(dev, AU0828_ISO_PACKETS_PER_URB, AU0828_MAX_ISO_BUFS, dev->max_pkt_size, au0828_isoc_copy); if (rc < 0) { printk(KERN_INFO "au0828_init_isoc failed\n"); 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 au0828_buffer *buf = container_of(vb, struct au0828_buffer, vb); struct au0828_fh *fh = vq->priv_data; struct au0828_dev *dev = fh->dev; struct au0828_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 au0828_buffer *buf = container_of(vb, struct au0828_buffer, vb); free_buffer(vq, buf); } static struct videobuf_queue_ops au0828_video_qops = { .buf_setup = buffer_setup, .buf_prepare = buffer_prepare, .buf_queue = buffer_queue, .buf_release = buffer_release, }; /* ------------------------------------------------------------------ V4L2 interface ------------------------------------------------------------------*/ static int au0828_i2s_init(struct au0828_dev *dev) { /* Enable i2s mode */ au0828_writereg(dev, AU0828_AUDIOCTRL_50C, 0x01); return 0; } /* * Auvitek au0828 analog stream enable * Please set interface0 to AS5 before enable the stream */ int au0828_analog_stream_enable(struct au0828_dev *d) { dprintk(1, "au0828_analog_stream_enable called\n"); au0828_writereg(d, AU0828_SENSORCTRL_VBI_103, 0x00); au0828_writereg(d, 0x106, 0x00); /* set x position */ au0828_writereg(d, 0x110, 0x00); au0828_writereg(d, 0x111, 0x00); au0828_writereg(d, 0x114, 0xa0); au0828_writereg(d, 0x115, 0x05); /* set y position */ au0828_writereg(d, 0x112, 0x02); au0828_writereg(d, 0x113, 0x00); au0828_writereg(d, 0x116, 0xf2); au0828_writereg(d, 0x117, 0x00); au0828_writereg(d, AU0828_SENSORCTRL_100, 0xb3); return 0; } int au0828_analog_stream_disable(struct au0828_dev *d) { dprintk(1, "au0828_analog_stream_disable called\n"); au0828_writereg(d, AU0828_SENSORCTRL_100, 0x0); return 0; } void au0828_analog_stream_reset(struct au0828_dev *dev) { dprintk(1, "au0828_analog_stream_reset called\n"); au0828_writereg(dev, AU0828_SENSORCTRL_100, 0x0); mdelay(30); au0828_writereg(dev, AU0828_SENSORCTRL_100, 0xb3); } /* * Some operations needs to stop current streaming */ static int au0828_stream_interrupt(struct au0828_dev *dev) { int ret = 0; dev->stream_state = STREAM_INTERRUPT; if (dev->dev_state == DEV_DISCONNECTED) return -ENODEV; else if (ret) { dev->dev_state = DEV_MISCONFIGURED; dprintk(1, "%s device is misconfigured!\n", __func__); return ret; } return 0; } /* * au0828_release_resources * unregister v4l2 devices */ void au0828_analog_unregister(struct au0828_dev *dev) { dprintk(1, "au0828_release_resources called\n"); mutex_lock(&au0828_sysfs_lock); if (dev->vdev) { list_del(&dev->au0828list); video_unregister_device(dev->vdev); } if (dev->vbi_dev) video_unregister_device(dev->vbi_dev); mutex_unlock(&au0828_sysfs_lock); } /* Usage lock check functions */ static int res_get(struct au0828_fh *fh) { struct au0828_dev *dev = fh->dev; int rc = 0; /* This instance already has stream_on */ if (fh->stream_on) return rc; if (dev->stream_on) return -EBUSY; dev->stream_on = 1; fh->stream_on = 1; return rc; } static int res_check(struct au0828_fh *fh) { return fh->stream_on; } static void res_free(struct au0828_fh *fh) { struct au0828_dev *dev = fh->dev; fh->stream_on = 0; dev->stream_on = 0; } static int au0828_v4l2_open(struct file *filp) { int minor = video_devdata(filp)->minor; int ret = 0; struct au0828_dev *h, *dev = NULL; struct au0828_fh *fh; int type = 0; struct list_head *list; list_for_each(list, &au0828_devlist) { h = list_entry(list, struct au0828_dev, au0828list); if (h->vdev->minor == minor) { dev = h; type = V4L2_BUF_TYPE_VIDEO_CAPTURE; } #ifdef VBI_IS_WORKING if (h->vbi_dev->minor == minor) { dev = h; type = V4L2_BUF_TYPE_VBI_CAPTURE; } #endif } if (NULL == dev) return -ENODEV; fh = kzalloc(sizeof(struct au0828_fh), GFP_KERNEL); if (NULL == fh) { dprintk(1, "Failed allocate au0828_fh struct!\n"); return -ENOMEM; } fh->type = type; fh->dev = dev; filp->private_data = fh; if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) { /* set au0828 interface0 to AS5 here again */ ret = usb_set_interface(dev->usbdev, 0, 5); if (ret < 0) { printk(KERN_INFO "Au0828 can't set alternate to 5!\n"); return -EBUSY; } dev->width = NTSC_STD_W; dev->height = NTSC_STD_H; dev->frame_size = dev->width * dev->height * 2; dev->field_size = dev->width * dev->height; dev->bytesperline = dev->width * 2; au0828_analog_stream_enable(dev); au0828_analog_stream_reset(dev); /* If we were doing ac97 instead of i2s, it would go here...*/ au0828_i2s_init(dev); dev->stream_state = STREAM_OFF; dev->dev_state |= DEV_INITIALIZED; } dev->users++; videobuf_queue_vmalloc_init(&fh->vb_vidq, &au0828_video_qops, NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED, sizeof(struct au0828_buffer), fh); return ret; } static int au0828_v4l2_close(struct file *filp) { int ret; struct au0828_fh *fh = filp->private_data; struct au0828_dev *dev = fh->dev; mutex_lock(&dev->lock); if (res_check(fh)) res_free(fh); if (dev->users == 1) { videobuf_stop(&fh->vb_vidq); videobuf_mmap_free(&fh->vb_vidq); if (dev->dev_state & DEV_DISCONNECTED) { au0828_analog_unregister(dev); mutex_unlock(&dev->lock); kfree(dev); return 0; } au0828_analog_stream_disable(dev); au0828_uninit_isoc(dev); /* When close the device, set the usb intf0 into alt0 to free USB bandwidth */ ret = usb_set_interface(dev->usbdev, 0, 0); if (ret < 0) printk(KERN_INFO "Au0828 can't set alternate to 0!\n"); } kfree(fh); dev->users--; wake_up_interruptible_nr(&dev->open, 1); mutex_unlock(&dev->lock); return 0; } static ssize_t au0828_v4l2_read(struct file *filp, char __user *buf, size_t count, loff_t *pos) { struct au0828_fh *fh = filp->private_data; struct au0828_dev *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { mutex_lock(&dev->lock); rc = res_get(fh); mutex_unlock(&dev->lock); if (unlikely(rc < 0)) return rc; return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0, filp->f_flags & O_NONBLOCK); } return 0; } static unsigned int au0828_v4l2_poll(struct file *filp, poll_table *wait) { struct au0828_fh *fh = filp->private_data; struct au0828_dev *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; mutex_lock(&dev->lock); rc = res_get(fh); mutex_unlock(&dev->lock); if (unlikely(rc < 0)) return POLLERR; if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) return POLLERR; return videobuf_poll_stream(filp, &fh->vb_vidq, wait); } static int au0828_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) { struct au0828_fh *fh = filp->private_data; struct au0828_dev *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; mutex_lock(&dev->lock); rc = res_get(fh); mutex_unlock(&dev->lock); if (unlikely(rc < 0)) return rc; rc = videobuf_mmap_mapper(&fh->vb_vidq, vma); dprintk(2, "vma start=0x%08lx, size=%ld, ret=%d\n", (unsigned long)vma->vm_start, (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, rc); return rc; } static int au0828_set_format(struct au0828_dev *dev, unsigned int cmd, struct v4l2_format *format) { int ret; int width = format->fmt.pix.width; int height = format->fmt.pix.height; unsigned int maxwidth, maxheight; maxwidth = 720; maxheight = 480; #ifdef VBI_IS_WORKING if (format->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) { dprintk(1, "VBI format set: to be supported!\n"); return 0; } if (format->type == V4L2_BUF_TYPE_VBI_CAPTURE) return 0; #endif if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; /* If they are demanding a format other than the one we support, bail out (tvtime asks for UYVY and then retries with YUYV) */ if (format->fmt.pix.pixelformat != V4L2_PIX_FMT_UYVY) return -EINVAL; /* format->fmt.pix.width only support 720 and height 480 */ if (width != 720) width = 720; if (height != 480) height = 480; format->fmt.pix.width = width; format->fmt.pix.height = height; format->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY; format->fmt.pix.bytesperline = width * 2; format->fmt.pix.sizeimage = width * height * 2; format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; format->fmt.pix.field = V4L2_FIELD_INTERLACED; if (cmd == VIDIOC_TRY_FMT) return 0; /* maybe set new image format, driver current only support 720*480 */ dev->width = width; dev->height = height; dev->frame_size = width * height * 2; dev->field_size = width * height; dev->bytesperline = width * 2; if (dev->stream_state == STREAM_ON) { dprintk(1, "VIDIOC_SET_FMT: interrupting stream!\n"); ret = au0828_stream_interrupt(dev); if (ret != 0) { dprintk(1, "error interrupting video stream!\n"); return ret; } } /* set au0828 interface0 to AS5 here again */ ret = usb_set_interface(dev->usbdev, 0, 5); if (ret < 0) { printk(KERN_INFO "Au0828 can't set alt setting to 5!\n"); return -EBUSY; } au0828_analog_stream_enable(dev); return 0; } static int vidioc_queryctrl(struct file *file, void *priv, struct v4l2_queryctrl *qc) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; au0828_call_i2c_clients(dev, VIDIOC_QUERYCTRL, qc); if (qc->type) return 0; else return -EINVAL; } static int vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; strlcpy(cap->driver, "au0828", sizeof(cap->driver)); strlcpy(cap->card, dev->board.name, sizeof(cap->card)); strlcpy(cap->bus_info, dev->v4l2_dev.name, sizeof(cap->bus_info)); cap->version = AU0828_VERSION_CODE; /*set the device capabilities */ cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | #ifdef VBI_IS_WORKING V4L2_CAP_VBI_CAPTURE | #endif V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING | V4L2_CAP_TUNER; return 0; } static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fmtdesc *f) { if (f->index) return -EINVAL; f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; strcpy(f->description, "Packed YUV2"); f->flags = 0; f->pixelformat = V4L2_PIX_FMT_UYVY; return 0; } static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; f->fmt.pix.width = dev->width; f->fmt.pix.height = dev->height; f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY; f->fmt.pix.bytesperline = dev->bytesperline; f->fmt.pix.sizeimage = dev->frame_size; f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; /* NTSC/PAL */ f->fmt.pix.field = V4L2_FIELD_INTERLACED; return 0; } static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; return au0828_set_format(dev, VIDIOC_TRY_FMT, f); } static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; int rc; if (videobuf_queue_is_busy(&fh->vb_vidq)) { printk(KERN_INFO "%s queue busy\n", __func__); rc = -EBUSY; goto out; } if (dev->stream_on && !fh->stream_on) { printk(KERN_INFO "%s device in use by another fh\n", __func__); rc = -EBUSY; goto out; } return au0828_set_format(dev, VIDIOC_S_FMT, f); out: return rc; } static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id * norm) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; /* FIXME: when we support something other than NTSC, we are going to have to make the au0828 bridge adjust the size of its capture buffer, which is currently hardcoded at 720x480 */ au0828_call_i2c_clients(dev, VIDIOC_S_STD, norm); return 0; } static int vidioc_enum_input(struct file *file, void *priv, struct v4l2_input *input) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; unsigned int tmp; static const char *inames[] = { [AU0828_VMUX_UNDEFINED] = "Undefined", [AU0828_VMUX_COMPOSITE] = "Composite", [AU0828_VMUX_SVIDEO] = "S-Video", [AU0828_VMUX_CABLE] = "Cable TV", [AU0828_VMUX_TELEVISION] = "Television", [AU0828_VMUX_DVB] = "DVB", [AU0828_VMUX_DEBUG] = "tv debug" }; tmp = input->index; if (tmp > AU0828_MAX_INPUT) return -EINVAL; if (AUVI_INPUT(tmp).type == 0) return -EINVAL; input->index = tmp; strcpy(input->name, inames[AUVI_INPUT(tmp).type]); if ((AUVI_INPUT(tmp).type == AU0828_VMUX_TELEVISION) || (AUVI_INPUT(tmp).type == AU0828_VMUX_CABLE)) input->type |= V4L2_INPUT_TYPE_TUNER; else input->type |= V4L2_INPUT_TYPE_CAMERA; input->std = dev->vdev->tvnorms; return 0; } static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; *i = dev->ctrl_input; return 0; } static int vidioc_s_input(struct file *file, void *priv, unsigned int index) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; int i; struct v4l2_routing route; dprintk(1, "VIDIOC_S_INPUT in function %s, input=%d\n", __func__, index); if (index >= AU0828_MAX_INPUT) return -EINVAL; if (AUVI_INPUT(index).type == 0) return -EINVAL; dev->ctrl_input = index; switch (AUVI_INPUT(index).type) { case AU0828_VMUX_SVIDEO: dev->input_type = AU0828_VMUX_SVIDEO; break; case AU0828_VMUX_COMPOSITE: dev->input_type = AU0828_VMUX_COMPOSITE; break; case AU0828_VMUX_TELEVISION: dev->input_type = AU0828_VMUX_TELEVISION; break; default: dprintk(1, "VIDIOC_S_INPUT unknown input type set [%d]\n", AUVI_INPUT(index).type); break; } route.input = AUVI_INPUT(index).vmux; route.output = 0; au0828_call_i2c_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route); for (i = 0; i < AU0828_MAX_INPUT; i++) { int enable = 0; if (AUVI_INPUT(i).audio_setup == NULL) continue; if (i == index) enable = 1; else enable = 0; if (enable) { (AUVI_INPUT(i).audio_setup)(dev, enable); } else { /* Make sure we leave it turned on if some other input is routed to this callback */ if ((AUVI_INPUT(i).audio_setup) != ((AUVI_INPUT(index).audio_setup))) { (AUVI_INPUT(i).audio_setup)(dev, enable); } } } route.input = AUVI_INPUT(index).amux; au0828_call_i2c_clients(dev, VIDIOC_INT_S_AUDIO_ROUTING, &route); return 0; } static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; unsigned int index = a->index; if (a->index > 1) return -EINVAL; index = dev->ctrl_ainput; if (index == 0) strcpy(a->name, "Television"); else strcpy(a->name, "Line in"); a->capability = V4L2_AUDCAP_STEREO; a->index = index; return 0; } static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; if (a->index != dev->ctrl_ainput) return -EINVAL; return 0; } static int vidioc_g_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; au0828_call_i2c_clients(dev, VIDIOC_G_CTRL, ctrl); return 0; } static int vidioc_s_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; au0828_call_i2c_clients(dev, VIDIOC_S_CTRL, ctrl); return 0; } static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; if (t->index != 0) return -EINVAL; strcpy(t->name, "Auvitek tuner"); au0828_call_i2c_clients(dev, VIDIOC_G_TUNER, t); return 0; } static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; if (t->index != 0) return -EINVAL; t->type = V4L2_TUNER_ANALOG_TV; au0828_call_i2c_clients(dev, VIDIOC_S_TUNER, t); dprintk(1, "VIDIOC_S_TUNER: signal = %x, afc = %x\n", t->signal, t->afc); return 0; } static int vidioc_g_frequency(struct file *file, void *priv, struct v4l2_frequency *freq) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; freq->type = V4L2_TUNER_ANALOG_TV; freq->frequency = dev->ctrl_freq; return 0; } static int vidioc_s_frequency(struct file *file, void *priv, struct v4l2_frequency *freq) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; if (freq->tuner != 0) return -EINVAL; if (freq->type != V4L2_TUNER_ANALOG_TV) return -EINVAL; dev->ctrl_freq = freq->frequency; au0828_call_i2c_clients(dev, VIDIOC_S_FREQUENCY, freq); au0828_analog_stream_reset(dev); return 0; } static int vidioc_g_chip_ident(struct file *file, void *priv, struct v4l2_dbg_chip_ident *chip) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; chip->ident = V4L2_IDENT_NONE; chip->revision = 0; if (v4l2_chip_match_host(&chip->match)) { chip->ident = V4L2_IDENT_AU0828; return 0; } au0828_call_i2c_clients(dev, VIDIOC_DBG_G_CHIP_IDENT, chip); if (chip->ident == V4L2_IDENT_NONE) return -EINVAL; return 0; } static int vidioc_cropcap(struct file *file, void *priv, struct v4l2_cropcap *cc) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; cc->bounds.left = 0; cc->bounds.top = 0; cc->bounds.width = dev->width; cc->bounds.height = dev->height; cc->defrect = cc->bounds; cc->pixelaspect.numerator = 54; cc->pixelaspect.denominator = 59; return 0; } static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type type) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; int b = V4L2_BUF_TYPE_VIDEO_CAPTURE; int rc; rc = check_dev(dev); if (rc < 0) return rc; if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { au0828_analog_stream_enable(dev); au0828_call_i2c_clients(dev, VIDIOC_STREAMON, &b); } mutex_lock(&dev->lock); rc = res_get(fh); if (likely(rc >= 0)) rc = videobuf_streamon(&fh->vb_vidq); mutex_unlock(&dev->lock); return rc; } static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type type) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; int b = V4L2_BUF_TYPE_VIDEO_CAPTURE; int i; int ret; int rc; rc = check_dev(dev); if (rc < 0) return rc; if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; if (type != fh->type) return -EINVAL; if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { au0828_call_i2c_clients(dev, VIDIOC_STREAMOFF, &b); ret = au0828_stream_interrupt(dev); if (ret != 0) return ret; } for (i = 0; i < AU0828_MAX_INPUT; i++) { if (AUVI_INPUT(i).audio_setup == NULL) continue; (AUVI_INPUT(i).audio_setup)(dev, 0); } mutex_lock(&dev->lock); videobuf_streamoff(&fh->vb_vidq); res_free(fh); mutex_unlock(&dev->lock); return 0; } static int vidioc_g_register(struct file *file, void *priv, struct v4l2_dbg_register *reg) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; switch (reg->match.type) { case V4L2_CHIP_MATCH_I2C_DRIVER: au0828_call_i2c_clients(dev, VIDIOC_DBG_G_REGISTER, reg); return 0; default: return -EINVAL; } } static int vidioc_s_register(struct file *file, void *priv, struct v4l2_dbg_register *reg) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; switch (reg->match.type) { case V4L2_CHIP_MATCH_I2C_DRIVER: au0828_call_i2c_clients(dev, VIDIOC_DBG_S_REGISTER, reg); return 0; default: return -EINVAL; } return 0; } static int vidioc_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *rb) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; return videobuf_reqbufs(&fh->vb_vidq, rb); } static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; return videobuf_querybuf(&fh->vb_vidq, b); } static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; return videobuf_qbuf(&fh->vb_vidq, b); } static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) { struct au0828_fh *fh = priv; struct au0828_dev *dev = fh->dev; int rc; rc = check_dev(dev); if (rc < 0) return rc; /* Workaround for a bug in the au0828 hardware design that sometimes results in the colorspace being inverted */ if (dev->greenscreen_detected == 1) { dprintk(1, "Detected green frame. Resetting stream...\n"); au0828_analog_stream_reset(dev); dev->greenscreen_detected = 0; } return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK); } #ifdef CONFIG_VIDEO_V4L1_COMPAT static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf) { struct au0828_fh *fh = priv; return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8); } #endif static struct v4l2_file_operations au0828_v4l_fops = { .owner = THIS_MODULE, .open = au0828_v4l2_open, .release = au0828_v4l2_close, .read = au0828_v4l2_read, .poll = au0828_v4l2_poll, .mmap = au0828_v4l2_mmap, .ioctl = video_ioctl2, }; 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, #ifdef VBI_IS_WORKING .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, .vidioc_try_fmt_vbi_cap = vidioc_s_fmt_vbi_cap, .vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap, #endif .vidioc_g_audio = vidioc_g_audio, .vidioc_s_audio = vidioc_s_audio, .vidioc_cropcap = vidioc_cropcap, #ifdef VBI_IS_WORKING .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap, .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap, .vidioc_s_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap, #endif .vidioc_reqbufs = vidioc_reqbufs, .vidioc_querybuf = vidioc_querybuf, .vidioc_qbuf = vidioc_qbuf, .vidioc_dqbuf = vidioc_dqbuf, .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_streamon = vidioc_streamon, .vidioc_streamoff = vidioc_streamoff, .vidioc_g_tuner = vidioc_g_tuner, .vidioc_s_tuner = vidioc_s_tuner, .vidioc_g_frequency = vidioc_g_frequency, .vidioc_s_frequency = vidioc_s_frequency, #ifdef CONFIG_VIDEO_ADV_DEBUG .vidioc_g_register = vidioc_g_register, .vidioc_s_register = vidioc_s_register, .vidioc_g_chip_ident = vidioc_g_chip_ident, #endif #ifdef CONFIG_VIDEO_V4L1_COMPAT .vidiocgmbuf = vidiocgmbuf, #endif }; static const struct video_device au0828_video_template = { .fops = &au0828_v4l_fops, .release = video_device_release, .ioctl_ops = &video_ioctl_ops, .minor = -1, .tvnorms = V4L2_STD_NTSC_M, .current_norm = V4L2_STD_NTSC_M, }; /**************************************************************************/ int au0828_analog_register(struct au0828_dev *dev, struct usb_interface *interface) { int retval = -ENOMEM; struct usb_host_interface *iface_desc; struct usb_endpoint_descriptor *endpoint; int i; dprintk(1, "au0828_analog_register called!\n"); /* set au0828 usb interface0 to as5 */ retval = usb_set_interface(dev->usbdev, interface->cur_altsetting->desc.bInterfaceNumber, 5); if (retval != 0) { printk(KERN_INFO "Failure setting usb interface0 to as5\n"); return retval; } /* Figure out which endpoint has the isoc interface */ iface_desc = interface->cur_altsetting; for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { endpoint = &iface_desc->endpoint[i].desc; if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_ISOC)) { /* we find our isoc in endpoint */ u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize); dev->max_pkt_size = (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1); dev->isoc_in_endpointaddr = endpoint->bEndpointAddress; } } if (!(dev->isoc_in_endpointaddr)) { printk(KERN_INFO "Could not locate isoc endpoint\n"); kfree(dev); return -ENODEV; } init_waitqueue_head(&dev->open); spin_lock_init(&dev->slock); mutex_init(&dev->lock); INIT_LIST_HEAD(&dev->vidq.active); INIT_LIST_HEAD(&dev->vidq.queued); dev->width = NTSC_STD_W; dev->height = NTSC_STD_H; dev->field_size = dev->width * dev->height; dev->frame_size = dev->field_size << 1; dev->bytesperline = dev->width << 1; dev->ctrl_ainput = 0; /* allocate and fill v4l2 video struct */ dev->vdev = video_device_alloc(); if (NULL == dev->vdev) { dprintk(1, "Can't allocate video_device.\n"); return -ENOMEM; } #ifdef VBI_IS_WORKING dev->vbi_dev = video_device_alloc(); if (NULL == dev->vbi_dev) { dprintk(1, "Can't allocate vbi_device.\n"); kfree(dev->vdev); return -ENOMEM; } #endif /* Fill the video capture device struct */ *dev->vdev = au0828_video_template; dev->vdev->parent = &dev->usbdev->dev; strcpy(dev->vdev->name, "au0828a video"); #ifdef VBI_IS_WORKING /* Setup the VBI device */ *dev->vbi_dev = au0828_video_template; dev->vbi_dev->parent = &dev->usbdev->dev; strcpy(dev->vbi_dev->name, "au0828a vbi"); #endif list_add_tail(&dev->au0828list, &au0828_devlist); /* Register the v4l2 device */ retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER, -1); if (retval != 0) { dprintk(1, "unable to register video device (error = %d).\n", retval); list_del(&dev->au0828list); video_device_release(dev->vdev); return -ENODEV; } #ifdef VBI_IS_WORKING /* Register the vbi device */ retval = video_register_device(dev->vbi_dev, VFL_TYPE_VBI, -1); if (retval != 0) { dprintk(1, "unable to register vbi device (error = %d).\n", retval); list_del(&dev->au0828list); video_device_release(dev->vbi_dev); video_device_release(dev->vdev); return -ENODEV; } #endif dprintk(1, "%s completed!\n", __func__); return 0; }