From: Aidan Thornton Date: Fri, 18 Apr 2008 00:40:36 +0000 (-0300) Subject: V4L/DVB (7603): em28xx-dvb: don't use videobuf-dvb X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=3421b7787a2cf41ac5edce9b5766bddd1e1d9986;p=openwrt%2Fstaging%2Fblogic.git V4L/DVB (7603): em28xx-dvb: don't use videobuf-dvb Modifies em28xx-dvb not to use videobuf-dvb, but instead to include the code for registering dvb devices locally and use the URB management code in the em28xx driver directly. DVB data streaming should now work. Signed-off-by: Aidan Thornton Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/video/em28xx/em28xx-dvb.c b/drivers/media/video/em28xx/em28xx-dvb.c index 65e0ab65fbe1..fd8f44cb6cbc 100644 --- a/drivers/media/video/em28xx/em28xx-dvb.c +++ b/drivers/media/video/em28xx/em28xx-dvb.c @@ -6,7 +6,9 @@ (c) 2008 Devin Heitmueller - Fixes for the driver to properly work with HVR-950 - Based on cx88-dvb and saa7134-dvb originally written by: + (c) 2008 Aidan Thornton + + Based on cx88-dvb, saa7134-dvb and videobuf-dvb originally written by: (c) 2004, 2005 Chris Pascoe (c) 2004 Gerd Knorr [SuSE Labs] @@ -37,28 +39,157 @@ DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); #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 = { @@ -89,20 +220,20 @@ static int attach_xc3028(u8 addr, struct em28xx *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; } @@ -111,23 +242,129 @@ static int attach_xc3028(u8 addr, struct em28xx *dev) 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) { @@ -136,21 +373,25 @@ static int dvb_init(struct em28xx *dev) 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" @@ -158,23 +399,35 @@ static int dvb_init(struct em28xx *dev) 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; } diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c index 1a0b09714af5..ffbc91f2ecbd 100644 --- a/drivers/media/video/em28xx/em28xx-video.c +++ b/drivers/media/video/em28xx/em28xx-video.c @@ -2190,11 +2190,6 @@ static int em28xx_usb_probe(struct usb_interface *interface, /* save our data pointer in this interface device */ usb_set_intfdata(interface, dev); -#if defined(CONFIG_VIDEO_EM28XX_DVB) || defined(CONFIG_VIDEO_EM28XX_DVB_MODULE) - dev->qops = kmalloc(sizeof(em28xx_video_qops), GFP_KERNEL); - memcpy(dev->qops, &em28xx_video_qops, sizeof(em28xx_video_qops)); -#endif - request_modules(dev); return 0; diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h index 151bc57bd08b..e5fd2dc77355 100644 --- a/drivers/media/video/em28xx/em28xx.h +++ b/drivers/media/video/em28xx/em28xx.h @@ -422,11 +422,7 @@ struct em28xx { enum em28xx_mode mode; -#if defined(CONFIG_VIDEO_EM28XX_DVB) || defined(CONFIG_VIDEO_EM28XX_DVB_MODULE) - struct videobuf_dvb dvb; - struct videobuf_queue_ops *qops; - struct em28xx_fh dvb_fh; -#endif + struct em28xx_dvb *dvb; }; struct em28xx_ops {