[media] dvb-usb: refactor MFE code for individual streaming config per frontend

refactor MFE code to allow for individual streaming configuration
for each frontend

Signed-off-by: Michael Krufky <mkrufky@kernellabs.com>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 81 insertions, 60 deletions

diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-dvb.c b/drivers/media/dvb/dvb-usb/dvb-usb-dvb.c
index 5e34df70ad6e..3f1115925ce6 100644
--- a/drivers/media/dvb/dvb-usb/dvb-usb-dvb.c
+++ b/drivers/media/dvb/dvb-usb/dvb-usb-dvb.c
@@ -17,15 +17,19 @@ static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
 	if (adap == NULL)
 		return -ENODEV;
 
+	if (adap->active_fe < 0) {
+		return -EINVAL;
+	}
+
 	newfeedcount = adap->feedcount + (onoff ? 1 : -1);
 
 	/* stop feed before setting a new pid if there will be no pid anymore */
 	if (newfeedcount == 0) {
 		deb_ts("stop feeding\n");
-		usb_urb_kill(&adap->stream);
+		usb_urb_kill(&adap->fe_adap[adap->active_fe].stream);
 
-		if (adap->props.streaming_ctrl != NULL) {
-			ret = adap->props.streaming_ctrl(adap, 0);
+		if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) {
+			ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 0);
 			if (ret < 0) {
 				err("error while stopping stream.");
 				return ret;
@@ -36,36 +40,36 @@ static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
 	adap->feedcount = newfeedcount;
 
 	/* activate the pid on the device specific pid_filter */
-	deb_ts("setting pid (%s): %5d %04x at index %d '%s'\n",adap->pid_filtering ?
+	deb_ts("setting pid (%s): %5d %04x at index %d '%s'\n",adap->fe_adap[adap->active_fe].pid_filtering ?
 		"yes" : "no", dvbdmxfeed->pid,dvbdmxfeed->pid,dvbdmxfeed->index,onoff ?
 		"on" : "off");
-	if (adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER &&
-		adap->pid_filtering &&
-		adap->props.pid_filter != NULL)
-		adap->props.pid_filter(adap, dvbdmxfeed->index, dvbdmxfeed->pid,onoff);
+	if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER &&
+		adap->fe_adap[adap->active_fe].pid_filtering &&
+		adap->props.fe[adap->active_fe].pid_filter != NULL)
+		adap->props.fe[adap->active_fe].pid_filter(adap, dvbdmxfeed->index, dvbdmxfeed->pid, onoff);
 
 	/* start the feed if this was the first feed and there is still a feed
 	 * for reception.
 	 */
 	if (adap->feedcount == onoff && adap->feedcount > 0) {
 		deb_ts("submitting all URBs\n");
-		usb_urb_submit(&adap->stream);
+		usb_urb_submit(&adap->fe_adap[adap->active_fe].stream);
 
 		deb_ts("controlling pid parser\n");
-		if (adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER &&
-			adap->props.caps &
+		if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER &&
+			adap->props.fe[adap->active_fe].caps &
 			DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF &&
-			adap->props.pid_filter_ctrl != NULL) {
-			ret = adap->props.pid_filter_ctrl(adap,
-				adap->pid_filtering);
+			adap->props.fe[adap->active_fe].pid_filter_ctrl != NULL) {
+			ret = adap->props.fe[adap->active_fe].pid_filter_ctrl(adap,
+				adap->fe_adap[adap->active_fe].pid_filtering);
 			if (ret < 0) {
 				err("could not handle pid_parser");
 				return ret;
 			}
 		}
 		deb_ts("start feeding\n");
-		if (adap->props.streaming_ctrl != NULL) {
-			ret = adap->props.streaming_ctrl(adap, 1);
+		if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) {
+			ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 1);
 			if (ret < 0) {
 				err("error while enabling fifo.");
 				return ret;
@@ -73,6 +77,9 @@ static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
 		}
 
 	}
+	if ((adap->feedcount == onoff) && (!onoff))
+		adap->active_fe = -1;
+
 	return 0;
 }
 
@@ -90,6 +97,7 @@ static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
 
 int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums)
 {
+	int i;
 	int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name,
 				       adap->dev->owner, &adap->dev->udev->dev,
 				       adapter_nums);
@@ -112,7 +120,12 @@ int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums)
 	adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
 	adap->demux.priv             = adap;
 
-	adap->demux.feednum          = adap->demux.filternum = adap->max_feed_count;
+	adap->demux.filternum        = 0;
+	for (i = 0; i < adap->props.num_frontends; i++) {
+		if (adap->demux.filternum < adap->fe_adap[i].max_feed_count)
+			adap->demux.filternum = adap->fe_adap[i].max_feed_count;
+	}
+	adap->demux.feednum          = adap->demux.filternum;
 	adap->demux.start_feed       = dvb_usb_start_feed;
 	adap->demux.stop_feed        = dvb_usb_stop_feed;
 	adap->demux.write_to_decoder = NULL;
@@ -156,17 +169,33 @@ int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap)
 	return 0;
 }
 
+static int dvb_usb_set_active_fe(struct dvb_frontend *fe, int onoff)
+{
+	struct dvb_usb_adapter *adap = fe->dvb->priv;
+
+	int ret = (adap->props.frontend_ctrl) ?
+		adap->props.frontend_ctrl(fe, onoff) : 0;
+
+	if (ret < 0) {
+		err("frontend_ctrl request failed");
+		return ret;
+	}
+	if (onoff)
+		adap->active_fe = fe->id;
+
+	return 0;
+}
+
 static int dvb_usb_fe_wakeup(struct dvb_frontend *fe)
 {
 	struct dvb_usb_adapter *adap = fe->dvb->priv;
 
 	dvb_usb_device_power_ctrl(adap->dev, 1);
 
-	if (adap->props.frontend_ctrl)
-		adap->props.frontend_ctrl(fe, 1);
+	dvb_usb_set_active_fe(fe, 1);
 
-	if (adap->fe_init[fe->id])
-		adap->fe_init[fe->id](fe);
+	if (adap->fe_adap[fe->id].fe_init)
+		adap->fe_adap[fe->id].fe_init(fe);
 
 	return 0;
 }
@@ -175,37 +204,31 @@ static int dvb_usb_fe_sleep(struct dvb_frontend *fe)
 {
 	struct dvb_usb_adapter *adap = fe->dvb->priv;
 
-	if (adap->fe_sleep[fe->id])
-		adap->fe_sleep[fe->id](fe);
+	if (adap->fe_adap[fe->id].fe_sleep)
+		adap->fe_adap[fe->id].fe_sleep(fe);
 
-	if (adap->props.frontend_ctrl)
-		adap->props.frontend_ctrl(fe, 0);
+	dvb_usb_set_active_fe(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;
+	int ret, i;
 
-	memset(adap->fe, 0, sizeof(adap->fe));
+	/* register all given adapter frontends */
+	for (i = 0; i < adap->props.num_frontends; i++) {
 
-	if (adap->props.frontend_attach == NULL) {
-		err("strange: '%s' #%d doesn't want to attach a frontend.",
-			adap->dev->desc->name, adap->id);
+		if (adap->props.fe[i].frontend_attach == NULL) {
+			err("strange: '%s' #%d,%d "
+			    "doesn't want to attach a frontend.",
+			    adap->dev->desc->name, adap->id, i);
 
-		return 0;
-	}
+			return 0;
+		}
 
-	/* 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) {
+		ret = adap->props.fe[i].frontend_attach(adap);
+		if (ret || adap->fe_adap[i].fe == NULL) {
 			/* only print error when there is no FE at all */
 			if (i == 0)
 				err("no frontend was attached by '%s'",
@@ -214,18 +237,18 @@ int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)
 			return 0;
 		}
 
-		adap->fe[i]->id = i;
+		adap->fe_adap[i].fe->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;
+		adap->fe_adap[i].fe_init = adap->fe_adap[i].fe->ops.init;
+		adap->fe_adap[i].fe->ops.init  = dvb_usb_fe_wakeup;
+		adap->fe_adap[i].fe_sleep = adap->fe_adap[i].fe->ops.sleep;
+		adap->fe_adap[i].fe->ops.sleep = dvb_usb_fe_sleep;
 
-		if (dvb_register_frontend(&adap->dvb_adap, adap->fe[i])) {
+		if (dvb_register_frontend(&adap->dvb_adap, adap->fe_adap[i].fe)) {
 			err("Frontend %d registration failed.", i);
-			dvb_frontend_detach(adap->fe[i]);
-			adap->fe[i] = NULL;
+			dvb_frontend_detach(adap->fe_adap[i].fe);
+			adap->fe_adap[i].fe = NULL;
 			/* In error case, do not try register more FEs,
 			 * still leaving already registered FEs alive. */
 			if (i == 0)
@@ -235,8 +258,10 @@ int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)
 		}
 
 		/* only attach the tuner if the demod is there */
-		if (adap->props.tuner_attach != NULL)
-			adap->props.tuner_attach(adap);
+		if (adap->props.fe[i].tuner_attach != NULL)
+			adap->props.fe[i].tuner_attach(adap);
+
+		adap->num_frontends_initialized++;
 	}
 
 	return 0;
@@ -244,20 +269,16 @@ int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)
 
 int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap)
 {
-	int i;
+	int i = adap->num_frontends_initialized - 1;
 
 	/* 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]);
+		if (adap->fe_adap[i].fe != NULL) {
+			dvb_unregister_frontend(adap->fe_adap[i].fe);
+			dvb_frontend_detach(adap->fe_adap[i].fe);
 		}
 	}
+	adap->num_frontends_initialized = 0;
 
 	return 0;
 }