From: Antti Palosaari Date: Mon, 25 Jul 2011 23:16:13 +0000 (-0300) Subject: [media] dvb-usb: multi-frontend support (MFE) X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9bd9e3bd2c57530dfe3057dd0aa9bdb37824925d;p=linux-beck.git [media] dvb-usb: multi-frontend support (MFE) Signed-off-by: Antti Palosaari Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-dvb.c b/drivers/media/dvb/dvb-usb/dvb-usb-dvb.c index d8c0bd9107f3..5e34df70ad6e 100644 --- a/drivers/media/dvb/dvb-usb/dvb-usb-dvb.c +++ b/drivers/media/dvb/dvb-usb/dvb-usb-dvb.c @@ -162,8 +162,11 @@ static int dvb_usb_fe_wakeup(struct dvb_frontend *fe) dvb_usb_device_power_ctrl(adap->dev, 1); - if (adap->fe_init) - adap->fe_init(fe); + if (adap->props.frontend_ctrl) + adap->props.frontend_ctrl(fe, 1); + + if (adap->fe_init[fe->id]) + adap->fe_init[fe->id](fe); return 0; } @@ -172,45 +175,89 @@ static int dvb_usb_fe_sleep(struct dvb_frontend *fe) { struct dvb_usb_adapter *adap = fe->dvb->priv; - if (adap->fe_sleep) - adap->fe_sleep(fe); + if (adap->fe_sleep[fe->id]) + adap->fe_sleep[fe->id](fe); + + if (adap->props.frontend_ctrl) + adap->props.frontend_ctrl(fe, 0); return dvb_usb_device_power_ctrl(adap->dev, 0); } int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap) { + int ret, i, x; + + memset(adap->fe, 0, sizeof(adap->fe)); + if (adap->props.frontend_attach == NULL) { - err("strange: '%s' #%d doesn't want to attach a frontend.",adap->dev->desc->name, adap->id); + err("strange: '%s' #%d doesn't want to attach a frontend.", + adap->dev->desc->name, adap->id); + return 0; } - /* re-assign sleep and wakeup functions */ - if (adap->props.frontend_attach(adap) == 0 && adap->fe[0] != NULL) { - adap->fe_init = adap->fe[0]->ops.init; adap->fe[0]->ops.init = dvb_usb_fe_wakeup; - adap->fe_sleep = adap->fe[0]->ops.sleep; adap->fe[0]->ops.sleep = dvb_usb_fe_sleep; + /* register all given adapter frontends */ + if (adap->props.num_frontends) + x = adap->props.num_frontends - 1; + else + x = 0; + + for (i = 0; i <= x; i++) { + ret = adap->props.frontend_attach(adap); + if (ret || adap->fe[i] == NULL) { + /* only print error when there is no FE at all */ + if (i == 0) + err("no frontend was attached by '%s'", + adap->dev->desc->name); + + return 0; + } - if (dvb_register_frontend(&adap->dvb_adap, adap->fe[0])) { - err("Frontend registration failed."); - dvb_frontend_detach(adap->fe[0]); - adap->fe[0] = NULL; - return -ENODEV; + adap->fe[i]->id = i; + + /* re-assign sleep and wakeup functions */ + adap->fe_init[i] = adap->fe[i]->ops.init; + adap->fe[i]->ops.init = dvb_usb_fe_wakeup; + adap->fe_sleep[i] = adap->fe[i]->ops.sleep; + adap->fe[i]->ops.sleep = dvb_usb_fe_sleep; + + if (dvb_register_frontend(&adap->dvb_adap, adap->fe[i])) { + err("Frontend %d registration failed.", i); + dvb_frontend_detach(adap->fe[i]); + adap->fe[i] = NULL; + /* In error case, do not try register more FEs, + * still leaving already registered FEs alive. */ + if (i == 0) + return -ENODEV; + else + return 0; } /* only attach the tuner if the demod is there */ if (adap->props.tuner_attach != NULL) adap->props.tuner_attach(adap); - } else - err("no frontend was attached by '%s'",adap->dev->desc->name); + } return 0; } int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap) { - if (adap->fe[0] != NULL) { - dvb_unregister_frontend(adap->fe[0]); - dvb_frontend_detach(adap->fe[0]); + int i; + + /* unregister all given adapter frontends */ + if (adap->props.num_frontends) + i = adap->props.num_frontends - 1; + else + i = 0; + + for (; i >= 0; i--) { + if (adap->fe[i] != NULL) { + dvb_unregister_frontend(adap->fe[i]); + dvb_frontend_detach(adap->fe[i]); + } } + return 0; } diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-init.c b/drivers/media/dvb/dvb-usb/dvb-usb-init.c index 2e3ea0fa28e0..f9af3484834f 100644 --- a/drivers/media/dvb/dvb-usb/dvb-usb-init.c +++ b/drivers/media/dvb/dvb-usb/dvb-usb-init.c @@ -77,6 +77,10 @@ static int dvb_usb_adapter_init(struct dvb_usb_device *d, short *adapter_nrs) return ret; } + /* use exclusive FE lock if there is multiple shared FEs */ + if (adap->fe[1]) + adap->dvb_adap.mfe_shared = 1; + d->num_adapters_initialized++; d->state |= DVB_USB_STATE_DVB; } diff --git a/drivers/media/dvb/dvb-usb/dvb-usb.h b/drivers/media/dvb/dvb-usb/dvb-usb.h index 2e57bffad3e3..a3e77b2e2261 100644 --- a/drivers/media/dvb/dvb-usb/dvb-usb.h +++ b/drivers/media/dvb/dvb-usb/dvb-usb.h @@ -124,6 +124,8 @@ struct usb_data_stream_properties { * @caps: capabilities of the DVB USB device. * @pid_filter_count: number of PID filter position in the optional hardware * PID-filter. + * @num_frontends: number of frontends of the DVB USB adapter. + * @frontend_ctrl: called to power on/off active frontend. * @streaming_ctrl: called to start and stop the MPEG2-TS streaming of the * device (not URB submitting/killing). * @pid_filter_ctrl: called to en/disable the PID filter, if any. @@ -141,7 +143,9 @@ struct dvb_usb_adapter_properties { #define DVB_USB_ADAP_RECEIVES_204_BYTE_TS 0x08 int caps; int pid_filter_count; + int num_frontends; + int (*frontend_ctrl) (struct dvb_frontend *, int); int (*streaming_ctrl) (struct dvb_usb_adapter *, int); int (*pid_filter_ctrl) (struct dvb_usb_adapter *, int); int (*pid_filter) (struct dvb_usb_adapter *, int, u16, int); @@ -345,6 +349,7 @@ struct usb_data_stream { * * @stream: the usb data stream. */ +#define MAX_NO_OF_FE_PER_ADAP 2 struct dvb_usb_adapter { struct dvb_usb_device *dev; struct dvb_usb_adapter_properties props; @@ -363,11 +368,11 @@ struct dvb_usb_adapter { struct dmxdev dmxdev; struct dvb_demux demux; struct dvb_net dvb_net; - struct dvb_frontend *fe[1]; + struct dvb_frontend *fe[MAX_NO_OF_FE_PER_ADAP]; int max_feed_count; - int (*fe_init) (struct dvb_frontend *); - int (*fe_sleep) (struct dvb_frontend *); + int (*fe_init[MAX_NO_OF_FE_PER_ADAP]) (struct dvb_frontend *); + int (*fe_sleep[MAX_NO_OF_FE_PER_ADAP]) (struct dvb_frontend *); struct usb_data_stream stream;