(c) 2008 Devin Heitmueller <devin.heitmueller@gmail.com>
- Fixes for the driver to properly work with HVR-950
- Based on cx88-dvb and saa7134-dvb originally written by:
+ (c) 2008 Aidan Thornton <makosoft@googlemail.com>
+
+ Based on cx88-dvb, saa7134-dvb and videobuf-dvb originally written by:
(c) 2004, 2005 Chris Pascoe <c.pascoe@itee.uq.edu.au>
(c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
#define dprintk(level, fmt, arg...) do { \
if (debug >= level) \
- printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg) \
+ printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg); \
} while (0)
-static int
-buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
+#define EM28XX_DVB_NUM_BUFS 5
+#define EM28XX_DVB_MAX_PACKETSIZE 564
+#define EM28XX_DVB_MAX_PACKETS 64
+
+struct em28xx_dvb {
+ struct dvb_frontend *frontend;
+
+ /* feed count management */
+ struct mutex lock;
+ int nfeeds;
+
+ /* general boilerplate stuff */
+ struct dvb_adapter adapter;
+ struct dvb_demux demux;
+ struct dmxdev dmxdev;
+ struct dmx_frontend fe_hw;
+ struct dmx_frontend fe_mem;
+ struct dvb_net net;
+};
+
+
+static inline void print_err_status(struct em28xx *dev,
+ int packet, int status)
{
- struct em28xx_fh *fh = vq->priv_data;
- struct em28xx *dev = fh->dev;
+ char *errmsg = "Unknown";
- /* FIXME: The better would be to allocate a smaller buffer */
- *size = 16 * fh->dev->width * fh->dev->height >> 3;
- if (0 == *count)
- *count = EM28XX_DEF_BUF;
+ 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(1, "URB status %d [%s].\n", status, errmsg);
+ } else {
+ dprintk(1, "URB packet %d, status %d [%s].\n", packet, status, errmsg);
+ }
+}
- if (*count < EM28XX_MIN_BUF)
- *count = EM28XX_MIN_BUF;
+static inline int dvb_isoc_copy(struct em28xx *dev, struct urb *urb)
+{
+ int i;
- dev->mode = EM28XX_DIGITAL_MODE;
+ if (!dev)
+ return 0;
+ if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
+ return 0;
+
+ if (urb->status < 0) {
+ print_err_status(dev, -1, urb->status);
+ if (urb->status == -ENOENT)
+ return 0;
+ }
+
+ 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;
+ }
+
+ dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer +
+ urb->iso_frame_desc[i].offset,
+ urb->iso_frame_desc[i].actual_length);
+ }
+
+ return 0;
+}
+
+static int start_streaming(struct em28xx_dvb* dvb) {
+ struct em28xx *dev = dvb->adapter.priv;
+
+ usb_set_interface(dev->udev, 0, 1);
+ dev->em28xx_write_regs_req(dev,0x00,0x48,"\x00",1);
+
+ return em28xx_init_isoc(dev, EM28XX_DVB_MAX_PACKETS,
+ EM28XX_DVB_NUM_BUFS, EM28XX_DVB_MAX_PACKETSIZE,
+ dvb_isoc_copy, EM28XX_DIGITAL_CAPTURE);
+}
+
+static int stop_streaming(struct em28xx_dvb* dvb) {
+ struct em28xx *dev = dvb->adapter.priv;
+
+ em28xx_uninit_isoc(dev);
return 0;
}
+static int start_feed(struct dvb_demux_feed *feed)
+{
+ struct dvb_demux *demux = feed->demux;
+ struct em28xx_dvb *dvb = demux->priv;
+ int rc, ret;
+
+ if (!demux->dmx.frontend)
+ return -EINVAL;
+
+ mutex_lock(&dvb->lock);
+ dvb->nfeeds++;
+ rc = dvb->nfeeds;
+
+ if (dvb->nfeeds == 1) {
+ ret = start_streaming(dvb);
+ if(ret < 0) rc = ret;
+ }
+
+ mutex_unlock(&dvb->lock);
+ return rc;
+}
+
+static int stop_feed(struct dvb_demux_feed *feed)
+{
+ struct dvb_demux *demux = feed->demux;
+ struct em28xx_dvb *dvb = demux->priv;
+ int err = 0;
+
+ mutex_lock(&dvb->lock);
+ dvb->nfeeds--;
+ if (0 == dvb->nfeeds) {
+ err = stop_streaming(dvb);
+ }
+ mutex_unlock(&dvb->lock);
+ return err;
+}
+
+
/* ------------------------------------------------------------------ */
static struct lgdt330x_config em2880_lgdt3303_dev = {
em28xx_setup_xc3028(dev, &ctl);
- if (!dev->dvb.frontend) {
+ if (!dev->dvb->frontend) {
printk(KERN_ERR "%s/2: dvb frontend not attached. "
"Can't attach xc3028\n",
dev->name);
return -EINVAL;
}
- fe = dvb_attach(xc2028_attach, dev->dvb.frontend, &cfg);
+ fe = dvb_attach(xc2028_attach, dev->dvb->frontend, &cfg);
if (!fe) {
printk(KERN_ERR "%s/2: xc3028 attach failed\n",
dev->name);
- dvb_frontend_detach(dev->dvb.frontend);
- dvb_unregister_frontend(dev->dvb.frontend);
- dev->dvb.frontend = NULL;
+ dvb_frontend_detach(dev->dvb->frontend);
+ dvb_unregister_frontend(dev->dvb->frontend);
+ dev->dvb->frontend = NULL;
return -EINVAL;
}
return 0;
}
-static int dvb_init(struct em28xx *dev)
+/* ------------------------------------------------------------------ */
+
+int register_dvb(struct em28xx_dvb *dvb,
+ struct module *module,
+ struct em28xx *dev,
+ struct device *device)
{
- /* init struct videobuf_dvb */
- dev->dvb.name = dev->name;
+ int result;
- dev->qops->buf_setup = buffer_setup;
+ mutex_init(&dvb->lock);
- /* FIXME: Do we need more initialization here? */
- memset(&dev->dvb_fh, 0, sizeof (dev->dvb_fh));
- dev->dvb_fh.dev = dev;
- dev->dvb_fh.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ /* register adapter */
+ result = dvb_register_adapter(&dvb->adapter, dev->name, module, device,
+ adapter_nr);
+ if (result < 0) {
+ printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
+ dev->name, result);
+ goto fail_adapter;
+ }
+ dvb->adapter.priv = dev;
+
+ /* register frontend */
+ result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
+ if (result < 0) {
+ printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
+ dev->name, result);
+ goto fail_frontend;
+ }
+
+ /* register demux stuff */
+ dvb->demux.dmx.capabilities =
+ DMX_TS_FILTERING | DMX_SECTION_FILTERING |
+ DMX_MEMORY_BASED_FILTERING;
+ dvb->demux.priv = dvb;
+ dvb->demux.filternum = 256;
+ dvb->demux.feednum = 256;
+ dvb->demux.start_feed = start_feed;
+ dvb->demux.stop_feed = stop_feed;
+ result = dvb_dmx_init(&dvb->demux);
+ if (result < 0) {
+ printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
+ dev->name, result);
+ goto fail_dmx;
+ }
+
+ dvb->dmxdev.filternum = 256;
+ dvb->dmxdev.demux = &dvb->demux.dmx;
+ dvb->dmxdev.capabilities = 0;
+ result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
+ if (result < 0) {
+ printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
+ dev->name, result);
+ goto fail_dmxdev;
+ }
- videobuf_queue_vmalloc_init(&dev->dvb.dvbq, dev->qops,
- &dev->udev->dev, &dev->slock,
- V4L2_BUF_TYPE_VIDEO_CAPTURE,
- V4L2_FIELD_ALTERNATE,
- sizeof(struct em28xx_buffer), &dev->dvb_fh);
+ dvb->fe_hw.source = DMX_FRONTEND_0;
+ result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
+ if (result < 0) {
+ printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
+ dev->name, result);
+ goto fail_fe_hw;
+ }
+
+ dvb->fe_mem.source = DMX_MEMORY_FE;
+ result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
+ if (result < 0) {
+ printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
+ dev->name, result);
+ goto fail_fe_mem;
+ }
+
+ result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
+ if (result < 0) {
+ printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n",
+ dev->name, result);
+ goto fail_fe_conn;
+ }
+
+ /* register network adapter */
+ dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
+ return 0;
+
+fail_fe_conn:
+ dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
+fail_fe_mem:
+ dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
+fail_fe_hw:
+ dvb_dmxdev_release(&dvb->dmxdev);
+fail_dmxdev:
+ dvb_dmx_release(&dvb->demux);
+fail_dmx:
+ dvb_unregister_frontend(dvb->frontend);
+fail_frontend:
+ dvb_frontend_detach(dvb->frontend);
+ dvb_unregister_adapter(&dvb->adapter);
+fail_adapter:
+ return result;
+}
+
+static void unregister_dvb(struct em28xx_dvb *dvb)
+{
+ dvb_net_release(&dvb->net);
+ dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
+ dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
+ dvb_dmxdev_release(&dvb->dmxdev);
+ dvb_dmx_release(&dvb->demux);
+ dvb_unregister_frontend(dvb->frontend);
+ dvb_frontend_detach(dvb->frontend);
+ dvb_unregister_adapter(&dvb->adapter);
+}
+
+
+static int dvb_init(struct em28xx *dev)
+{
+ int result = 0;
+ struct em28xx_dvb *dvb;
+
+ dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL);
+ if(dvb == NULL) {
+ printk("em28xx_dvb: memory allocation failed\n");
+ return -ENOMEM;
+ }
+ dev->dvb = dvb;
/* init frontend */
switch (dev->model) {
dev->mode = EM28XX_DIGITAL_MODE;
em28xx_tuner_callback(dev, XC2028_TUNER_RESET, 0);
- dev->dvb.frontend = dvb_attach(lgdt330x_attach,
- &em2880_lgdt3303_dev,
- &dev->i2c_adap);
- if (attach_xc3028(0x61, dev) < 0)
- return -EINVAL;
+ dvb->frontend = dvb_attach(lgdt330x_attach,
+ &em2880_lgdt3303_dev,
+ &dev->i2c_adap);
+ if (attach_xc3028(0x61, dev) < 0) {
+ result = -EINVAL;
+ goto out_free;
+ }
break;
case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
/* Enable zl10353 */
dev->mode = EM28XX_DIGITAL_MODE;
em28xx_tuner_callback(dev, XC2028_TUNER_RESET, 0);
- dev->dvb.frontend = dvb_attach(zl10353_attach,
- &em28xx_zl10353_with_xc3028,
- &dev->i2c_adap);
- if (attach_xc3028(0x61, dev) < 0)
- return -EINVAL;
+ dvb->frontend = dvb_attach(zl10353_attach,
+ &em28xx_zl10353_with_xc3028,
+ &dev->i2c_adap);
+ if (attach_xc3028(0x61, dev) < 0) {
+ result = -EINVAL;
+ goto out_free;
+ }
break;
default:
printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card"
dev->name);
break;
}
- if (NULL == dev->dvb.frontend) {
+ if (NULL == dvb->frontend) {
printk(KERN_ERR
"%s/2: frontend initialization failed\n",
dev->name);
- return -EINVAL;
+ result = -EINVAL;
+ goto out_free;
}
/* register everything */
- return videobuf_dvb_register(&dev->dvb, THIS_MODULE, dev,
- &dev->udev->dev,
- adapter_nr);
+ result = register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);
+
+ if (result < 0) {
+ goto out_free;
+ }
+
+ return 0;
+
+out_free:
+ kfree(dvb);
+ dev->dvb = NULL;
+ return result;
}
static int dvb_fini(struct em28xx *dev)
{
- if (dev->dvb.frontend)
- videobuf_dvb_unregister(&dev->dvb);
+ if (dev->dvb) {
+ unregister_dvb(dev->dvb);
+ dev->dvb = NULL;
+ }
return 0;
}
projects / linux-2.6 / commitdiff