X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fmedia%2Fvideo%2Fvideobuf-dvb.c;h=0e7dcba8e4ae08aa902a0a4c06213630d077bb76;hb=feeedc6c820e1026453ad865076cee435f24d30a;hp=b56cffcbfd458152829b0973ade0f6646380aee8;hpb=e9dd54da0ba494bd86c45bdf574a6fd6ff8f2210;p=linux-2.6-omap-h63xx.git diff --git a/drivers/media/video/videobuf-dvb.c b/drivers/media/video/videobuf-dvb.c index b56cffcbfd4..0e7dcba8e4a 100644 --- a/drivers/media/video/videobuf-dvb.c +++ b/drivers/media/video/videobuf-dvb.c @@ -126,7 +126,6 @@ static int videobuf_dvb_stop_feed(struct dvb_demux_feed *feed) mutex_lock(&dvb->lock); dvb->nfeeds--; if (0 == dvb->nfeeds && NULL != dvb->thread) { - // FIXME: cx8802_cancel_buffers(dev); err = kthread_stop(dvb->thread); dvb->thread = NULL; } @@ -134,30 +133,38 @@ static int videobuf_dvb_stop_feed(struct dvb_demux_feed *feed) return err; } -/* ------------------------------------------------------------------ */ - -int videobuf_dvb_register(struct videobuf_dvb *dvb, +static int videobuf_dvb_register_adapter(struct videobuf_dvb_frontends *fe, struct module *module, void *adapter_priv, struct device *device, - short *adapter_nr) + char *adapter_name, + short *adapter_nr, + int mfe_shared) { int result; - mutex_init(&dvb->lock); + mutex_init(&fe->lock); /* register adapter */ - result = dvb_register_adapter(&dvb->adapter, dvb->name, module, device, - adapter_nr); + result = dvb_register_adapter(&fe->adapter, adapter_name, module, + device, adapter_nr); if (result < 0) { printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n", - dvb->name, result); - goto fail_adapter; + adapter_name, result); } - dvb->adapter.priv = adapter_priv; + fe->adapter.priv = adapter_priv; + fe->adapter.mfe_shared = mfe_shared; + + return result; +} + +static int videobuf_dvb_register_frontend(struct dvb_adapter *adapter, + struct videobuf_dvb *dvb) +{ + int result; /* register frontend */ - result = dvb_register_frontend(&dvb->adapter, dvb->frontend); + result = dvb_register_frontend(adapter, dvb->frontend); if (result < 0) { printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n", dvb->name, result); @@ -183,7 +190,8 @@ int videobuf_dvb_register(struct videobuf_dvb *dvb, dvb->dmxdev.filternum = 256; dvb->dmxdev.demux = &dvb->demux.dmx; dvb->dmxdev.capabilities = 0; - result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter); + result = dvb_dmxdev_init(&dvb->dmxdev, adapter); + if (result < 0) { printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n", dvb->name, result); @@ -214,7 +222,11 @@ int videobuf_dvb_register(struct videobuf_dvb *dvb, } /* register network adapter */ - dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx); + dvb_net_init(adapter, &dvb->net, &dvb->demux.dmx); + if (dvb->net.dvbdev == NULL) { + result = -ENOMEM; + goto fail_fe_conn; + } return 0; fail_fe_conn: @@ -229,30 +241,157 @@ fail_dmx: dvb_unregister_frontend(dvb->frontend); fail_frontend: dvb_frontend_detach(dvb->frontend); - dvb_unregister_adapter(&dvb->adapter); -fail_adapter: + dvb->frontend = NULL; + return result; } -void videobuf_dvb_unregister(struct videobuf_dvb *dvb) +/* ------------------------------------------------------------------ */ +/* Register a single adapter and one or more frontends */ +int videobuf_dvb_register_bus(struct videobuf_dvb_frontends *f, + struct module *module, + void *adapter_priv, + struct device *device, + short *adapter_nr, + int mfe_shared) { - 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); + struct list_head *list, *q; + struct videobuf_dvb_frontend *fe; + int res; + + fe = videobuf_dvb_get_frontend(f, 1); + if (!fe) { + printk(KERN_WARNING "Unable to register the adapter which has no frontends\n"); + return -EINVAL; + } + + /* Bring up the adapter */ + res = videobuf_dvb_register_adapter(f, module, adapter_priv, device, + fe->dvb.name, adapter_nr, mfe_shared); + if (res < 0) { + printk(KERN_WARNING "videobuf_dvb_register_adapter failed (errno = %d)\n", res); + return res; + } + + /* Attach all of the frontends to the adapter */ + mutex_lock(&f->lock); + list_for_each_safe(list, q, &f->felist) { + fe = list_entry(list, struct videobuf_dvb_frontend, felist); + res = videobuf_dvb_register_frontend(&f->adapter, &fe->dvb); + if (res < 0) { + printk(KERN_WARNING "%s: videobuf_dvb_register_frontend failed (errno = %d)\n", + fe->dvb.name, res); + goto err; + } + } + mutex_unlock(&f->lock); + return 0; + +err: + mutex_unlock(&f->lock); + videobuf_dvb_unregister_bus(f); + return res; +} +EXPORT_SYMBOL(videobuf_dvb_register_bus); + +void videobuf_dvb_unregister_bus(struct videobuf_dvb_frontends *f) +{ + videobuf_dvb_dealloc_frontends(f); + + dvb_unregister_adapter(&f->adapter); } +EXPORT_SYMBOL(videobuf_dvb_unregister_bus); -EXPORT_SYMBOL(videobuf_dvb_register); -EXPORT_SYMBOL(videobuf_dvb_unregister); +struct videobuf_dvb_frontend *videobuf_dvb_get_frontend( + struct videobuf_dvb_frontends *f, int id) +{ + struct list_head *list, *q; + struct videobuf_dvb_frontend *fe, *ret = NULL; -/* ------------------------------------------------------------------ */ -/* - * Local variables: - * c-basic-offset: 8 - * compile-command: "make DVB=1" - * End: - */ + mutex_lock(&f->lock); + + list_for_each_safe(list, q, &f->felist) { + fe = list_entry(list, struct videobuf_dvb_frontend, felist); + if (fe->id == id) { + ret = fe; + break; + } + } + + mutex_unlock(&f->lock); + + return ret; +} +EXPORT_SYMBOL(videobuf_dvb_get_frontend); + +int videobuf_dvb_find_frontend(struct videobuf_dvb_frontends *f, + struct dvb_frontend *p) +{ + struct list_head *list, *q; + struct videobuf_dvb_frontend *fe = NULL; + int ret = 0; + + mutex_lock(&f->lock); + + list_for_each_safe(list, q, &f->felist) { + fe = list_entry(list, struct videobuf_dvb_frontend, felist); + if (fe->dvb.frontend == p) { + ret = fe->id; + break; + } + } + + mutex_unlock(&f->lock); + + return ret; +} +EXPORT_SYMBOL(videobuf_dvb_find_frontend); + +struct videobuf_dvb_frontend *videobuf_dvb_alloc_frontend( + struct videobuf_dvb_frontends *f, int id) +{ + struct videobuf_dvb_frontend *fe; + + fe = kzalloc(sizeof(struct videobuf_dvb_frontend), GFP_KERNEL); + if (fe == NULL) + goto fail_alloc; + + fe->id = id; + mutex_init(&fe->dvb.lock); + + mutex_lock(&f->lock); + list_add_tail(&fe->felist, &f->felist); + mutex_unlock(&f->lock); + +fail_alloc: + return fe; +} +EXPORT_SYMBOL(videobuf_dvb_alloc_frontend); + +void videobuf_dvb_dealloc_frontends(struct videobuf_dvb_frontends *f) +{ + struct list_head *list, *q; + struct videobuf_dvb_frontend *fe; + + mutex_lock(&f->lock); + list_for_each_safe(list, q, &f->felist) { + fe = list_entry(list, struct videobuf_dvb_frontend, felist); + if (fe->dvb.net.dvbdev) { + dvb_net_release(&fe->dvb.net); + fe->dvb.demux.dmx.remove_frontend(&fe->dvb.demux.dmx, + &fe->dvb.fe_mem); + fe->dvb.demux.dmx.remove_frontend(&fe->dvb.demux.dmx, + &fe->dvb.fe_hw); + dvb_dmxdev_release(&fe->dvb.dmxdev); + dvb_dmx_release(&fe->dvb.demux); + dvb_unregister_frontend(fe->dvb.frontend); + } + if (fe->dvb.frontend) + /* always allocated, may have been reset */ + dvb_frontend_detach(fe->dvb.frontend); + list_del(list); /* remove list entry */ + kfree(fe); /* free frontend allocation */ + } + mutex_unlock(&f->lock); +} +EXPORT_SYMBOL(videobuf_dvb_dealloc_frontends);