/* DVB device driver for em28xx (c) 2008 Mauro Carvalho Chehab (c) 2008 Devin Heitmueller - Fixes for the driver to properly work with HVR-950 - Fixes for the driver to properly work with Pinnacle PCTV HD Pro Stick - Fixes for the driver to properly work with AMD ATI TV Wonder HD 600 (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] 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. */ #include #include #include "em28xx.h" #include #include #include "lgdt330x.h" #include "zl10353.h" #ifdef EM28XX_DRX397XD_SUPPORT #include "drx397xD.h" #endif MODULE_DESCRIPTION("driver for em28xx based DVB cards"); MODULE_AUTHOR("Mauro Carvalho Chehab "); MODULE_LICENSE("GPL"); static unsigned int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "enable debug messages [dvb]"); 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); \ } while (0) #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) { char *errmsg = "Unknown"; switch (status) { case -ENOENT: errmsg = "unlinked synchronuously"; break; case -ECONNRESET: errmsg = "unlinked asynchronuously"; break; case -ENOSR: errmsg = "Buffer error (overrun)"; break; case -EPIPE: errmsg = "Stalled (device not responding)"; break; case -EOVERFLOW: errmsg = "Babble (bad cable?)"; break; case -EPROTO: errmsg = "Bit-stuff error (bad cable?)"; break; case -EILSEQ: errmsg = "CRC/Timeout (could be anything)"; break; case -ETIME: errmsg = "Device does not respond"; break; } if (packet < 0) { dprintk(1, "URB status %d [%s].\n", status, errmsg); } else { dprintk(1, "URB packet %d, status %d [%s].\n", packet, status, errmsg); } } static inline int dvb_isoc_copy(struct em28xx *dev, struct urb *urb) { int i; 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) { int rc; struct em28xx *dev = dvb->adapter.priv; usb_set_interface(dev->udev, 0, 1); rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE); if (rc < 0) return rc; return em28xx_init_isoc(dev, EM28XX_DVB_MAX_PACKETS, EM28XX_DVB_NUM_BUFS, EM28XX_DVB_MAX_PACKETSIZE, dvb_isoc_copy); } static int stop_streaming(struct em28xx_dvb *dvb) { struct em28xx *dev = dvb->adapter.priv; em28xx_uninit_isoc(dev); em28xx_set_mode(dev, EM28XX_SUSPEND); 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 int em28xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire) { struct em28xx *dev = fe->dvb->priv; if (acquire) return em28xx_set_mode(dev, EM28XX_DIGITAL_MODE); else return em28xx_set_mode(dev, EM28XX_SUSPEND); } /* ------------------------------------------------------------------ */ static struct lgdt330x_config em2880_lgdt3303_dev = { .demod_address = 0x0e, .demod_chip = LGDT3303, }; static struct zl10353_config em28xx_zl10353_with_xc3028 = { .demod_address = (0x1e >> 1), .no_tuner = 1, .parallel_ts = 1, .if2 = 45600, }; #ifdef EM28XX_DRX397XD_SUPPORT /* [TODO] djh - not sure yet what the device config needs to contain */ static struct drx397xD_config em28xx_drx397xD_with_xc3028 = { .demod_address = (0xe0 >> 1), }; #endif /* ------------------------------------------------------------------ */ static int attach_xc3028(u8 addr, struct em28xx *dev) { struct dvb_frontend *fe; struct xc2028_config cfg; memset(&cfg, 0, sizeof(cfg)); cfg.i2c_adap = &dev->i2c_adap; cfg.i2c_addr = addr; 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); if (!fe) { printk(KERN_ERR "%s/2: xc3028 attach failed\n", dev->name); dvb_frontend_detach(dev->dvb->frontend); dev->dvb->frontend = NULL; return -EINVAL; } printk(KERN_INFO "%s/2: xc3028 attached\n", dev->name); return 0; } /* ------------------------------------------------------------------ */ static int register_dvb(struct em28xx_dvb *dvb, struct module *module, struct em28xx *dev, struct device *device) { int result; mutex_init(&dvb->lock); /* 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; } /* Ensure all frontends negotiate bus access */ dvb->frontend->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl; 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; } 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; if (!dev->board.has_dvb) { /* This device does not support the extension */ return 0; } dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL); if (dvb == NULL) { printk(KERN_INFO "em28xx_dvb: memory allocation failed\n"); return -ENOMEM; } dev->dvb = dvb; em28xx_set_mode(dev, EM28XX_DIGITAL_MODE); /* init frontend */ switch (dev->model) { case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850: case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950: case EM2880_BOARD_PINNACLE_PCTV_HD_PRO: case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600: 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: case EM2880_BOARD_TERRATEC_HYBRID_XS: case EM2880_BOARD_KWORLD_DVB_310U: 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; case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2: #ifdef EM28XX_DRX397XD_SUPPORT /* We don't have the config structure properly populated, so this is commented out for now */ dvb->frontend = dvb_attach(drx397xD_attach, &em28xx_drx397xD_with_xc3028, &dev->i2c_adap); if (attach_xc3028(0x61, dev) < 0) { result = -EINVAL; goto out_free; } break; #endif default: printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card" " isn't supported yet\n", dev->name); break; } if (NULL == dvb->frontend) { printk(KERN_ERR "%s/2: frontend initialization failed\n", dev->name); result = -EINVAL; goto out_free; } /* define general-purpose callback pointer */ dvb->frontend->callback = em28xx_tuner_callback; /* register everything */ result = register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev); if (result < 0) goto out_free; em28xx_set_mode(dev, EM28XX_SUSPEND); printk(KERN_INFO "Successfully loaded em28xx-dvb\n"); return 0; out_free: em28xx_set_mode(dev, EM28XX_SUSPEND); kfree(dvb); dev->dvb = NULL; return result; } static int dvb_fini(struct em28xx *dev) { if (!dev->board.has_dvb) { /* This device does not support the extension */ return 0; } if (dev->dvb) { unregister_dvb(dev->dvb); dev->dvb = NULL; } return 0; } static struct em28xx_ops dvb_ops = { .id = EM28XX_DVB, .name = "Em28xx dvb Extension", .init = dvb_init, .fini = dvb_fini, }; static int __init em28xx_dvb_register(void) { return em28xx_register_extension(&dvb_ops); } static void __exit em28xx_dvb_unregister(void) { em28xx_unregister_extension(&dvb_ops); } module_init(em28xx_dvb_register); module_exit(em28xx_dvb_unregister);