V4L/DVB (13293): dvb-usb-friio: return the correct DTV_DELIVERY_SYSTEM

This patch makes the driver return the correct DTV_DELIVERY_SYSTEM.

The driver previously returned SYS_UNDEFINED for DTV_DELIVERY_SYSTEM property,
as it lacked any driver specific S2API support.

Signed-off-by: Akihiro Tsukada <tskd2@yahoo.co.jp>
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/drivers/media/dvb/dvb-usb/friio-fe.c b/drivers/media/dvb/dvb-usb/friio-fe.c
index c4dfe25cf60d..8b489d11eb37 100644
--- a/drivers/media/dvb/dvb-usb/friio-fe.c
+++ b/drivers/media/dvb/dvb-usb/friio-fe.c
@@ -286,6 +286,27 @@ static int jdvbt90502_get_tune_settings(struct dvb_frontend *fe,
         return 0;
 }
 
+/* filter out un-supported properties to notify users */
+static int jdvbt90502_set_property(struct dvb_frontend *fe,
+                                   struct dtv_property *tvp)
+{
+        int r = 0;
+
+        switch (tvp->cmd) {
+        case DTV_DELIVERY_SYSTEM:
+                if (tvp->u.data != SYS_ISDBT)
+                        r = -EINVAL;
+                break;
+        case DTV_CLEAR:
+        case DTV_TUNE:
+        case DTV_FREQUENCY:
+                break;
+        default:
+                r = -EINVAL;
+        }
+        return r;
+}
+
 static int jdvbt90502_get_frontend(struct dvb_frontend *fe,
                                    struct dvb_frontend_parameters *p)
 {
@@ -314,6 +335,9 @@ static int jdvbt90502_set_frontend(struct dvb_frontend *fe,
 
         deb_fe("%s: Freq:%d\n", __func__, p->frequency);
 
+        /* for recovery from DTV_CLEAN */
+        fe->dtv_property_cache.delivery_system = SYS_ISDBT;
+
         ret = jdvbt90502_pll_set_freq(state, p->frequency);
         if (ret) {
                 deb_fe("%s:ret == %d\n", __func__, ret);
@@ -394,6 +418,7 @@ static int jdvbt90502_init(struct dvb_frontend *fe)
                 if (ret != 1)
                         goto error;
         }
+        fe->dtv_property_cache.delivery_system = SYS_ISDBT;
         msleep(100);
 
         return 0;
@@ -471,6 +496,8 @@ static struct dvb_frontend_ops jdvbt90502_ops = {
         .sleep = jdvbt90502_sleep,
         .write = _jdvbt90502_write,
 
+        .set_property = jdvbt90502_set_property,
+
         .set_frontend = jdvbt90502_set_frontend,
         .get_frontend = jdvbt90502_get_frontend,
         .get_tune_settings = jdvbt90502_get_tune_settings,