V4L/DVB (11066): au0828: add support for analog functionality in bridge
Add support for the analog functionality found in the au0828 bridge
Thanks to Michael Krufky <mkrufky@linuxtv.org> and Steven Toth
<stoth@linuxtv.org> for providing sample hardware, engineering level support,
and testing.
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
[mchehab@redhat.com: fix compilation by adding linux/version.h]
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/au0828/au0828-video.c b/drivers/media/video/au0828/au0828-video.c
new file mode 100644
index 0000000..e34464f
--- /dev/null
+++ b/drivers/media/video/au0828/au0828-video.c
@@ -0,0 +1,1677 @@
+/*
+ * Auvitek AU0828 USB Bridge (Analog video support)
+ *
+ * Copyright (C) 2009 Devin Heitmueller <dheitmueller@linuxtv.org>
+ * 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 <linux/module.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/suspend.h>
+#include <linux/version.h>
+#include <linux/videodev.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-chip-ident.h>
+#include <media/tuner.h>
+#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)
+
+/* Forward declarations */
+void au0828_analog_stream_reset(struct au0828_dev *dev);
+
+/* ------------------------------------------------------------------
+ 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("v4l2 ioctl: device not present\n");
+ return -ENODEV;
+ }
+
+ if (dev->dev_state & DEV_MISCONFIGURED) {
+ printk("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 of %zi bytes past buffer 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("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("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", __FUNCTION__);
+ 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);
+
+ list_del(&dev->au0828list);
+ video_unregister_device(dev->vdev);
+ 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;
+ }
+ if(h->vbi_dev->minor == minor) {
+ dev = h;
+ type = V4L2_BUF_TYPE_VBI_CAPTURE;
+ }
+ }
+
+ 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("Au0828 can't set alt setting 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("Au0828 can't set alt setting 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;
+
+ 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;
+ }
+ 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");
+ if((ret = au0828_stream_interrupt(dev))) {
+ 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("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;
+
+ memset(cap, 0, sizeof(*cap));
+ strlcpy(cap->driver, "au0828", sizeof(cap->driver));
+ strlcpy(cap->card, au0828_boards[dev->board].name, sizeof(cap->card));
+ strlcpy(cap->bus_info, dev->usbdev->dev.bus_id, sizeof(cap->bus_info));
+
+ cap->version = AU0828_VERSION_CODE;
+
+ /*set the device capabilities */
+ cap->capabilities = V4L2_CAP_VBI_CAPTURE |
+ V4L2_CAP_VIDEO_CAPTURE |
+ 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;
+
+ memset(f, 0, sizeof(*f));
+ f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ strcpy(f->description, "Packed YUV2");
+
+ f->flags = 0;
+ f->pixelformat = V4L2_PIX_FMT_UYVY;
+
+ memset(f->reserved, 0, sizeof(f->reserved));
+ 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("%s queue busy\n", __func__);
+ rc = -EBUSY;
+ goto out;
+ }
+
+ if (dev->stream_on && !fh->stream_on) {
+ printk("%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_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;
+
+ memset(input, 0, sizeof(*input));
+ 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", __FUNCTION__,
+ 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:
+ ;
+ }
+
+ 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;
+
+ memset(a, 0, sizeof(*a));
+ 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;
+
+ memset(t, 0, sizeof(*t));
+ 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;
+ memset(freq, 0, sizeof(*freq));
+ 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;
+
+ au0828_call_i2c_clients(dev, VIDIOC_DBG_G_CHIP_IDENT, chip);
+ 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);
+ if((ret = au0828_stream_interrupt(dev)) != 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,
+ .vidioc_g_audio = vidioc_g_audio,
+ .vidioc_s_audio = vidioc_s_audio,
+ .vidioc_cropcap = vidioc_cropcap,
+#ifdef AAA
+ .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,
+ .current_norm = V4L2_STD_NTSC,
+};
+
+/**************************************************************************/
+
+int au0828_analog_register(struct au0828_dev *dev)
+{
+ int retval = -ENOMEM;
+
+ dprintk(1, "au0828_analog_register called!\n");
+
+ /* Load the analog demodulator driver (note this would need to be
+ abstracted out if we ever need to support a different demod) */
+ request_module("au8522");
+
+ /* Load the tuner module, which results in i2c enumeration and
+ attachment of whatever tuner is on the bus */
+ request_module("tuner");
+
+ 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;
+ }
+
+ dev->vbi_dev = video_device_alloc();
+ if(NULL == dev->vbi_dev) {
+ dprintk(1, "Can't allocate vbi_device.\n");
+ kfree(dev->vdev);
+ return -ENOMEM;
+ }
+
+ /* Fill the video capture device struct */
+ *dev->vdev = au0828_video_template;
+ dev->vdev->vfl_type = VID_TYPE_CAPTURE | VID_TYPE_TUNER;
+ dev->vdev->parent = &dev->usbdev->dev;
+ strcpy(dev->vdev->name, "au0828a video");
+
+ /* Setup the VBI device */
+ *dev->vbi_dev = au0828_video_template;
+ dev->vbi_dev->vfl_type = VFL_TYPE_VBI;
+ dev->vbi_dev->parent = &dev->usbdev->dev;
+ strcpy(dev->vbi_dev->name, "au0828a vbi");
+
+ list_add_tail(&dev->au0828list, &au0828_devlist);
+
+ /* Register the v4l2 device */
+ if((retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER, -1)) != 0) {
+ dprintk(1, "unable to register video device (error = %d).\n", retval);
+ list_del(&dev->au0828list);
+ video_device_release(dev->vdev);
+ return -ENODEV;
+ }
+
+ /* Register the vbi device */
+ if((retval = video_register_device(dev->vbi_dev, VFL_TYPE_VBI, -1)) != 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;
+ }
+
+ dprintk(1, "%s completed!\n", __FUNCTION__);
+
+ return 0;
+}
+