utils/dvb: Fix for ATSC legacy drivers

ATSC legacy drivers emulation is currently somewhat broken. Changing
the delivery systems on those devices don't work. So, a hack is needed
here, in order to make it to properly detect the delivery systems,
based at the FE properties.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/utils/dvb/dvb-fe.c b/utils/dvb/dvb-fe.c
index 9a837b2..6440000 100644 (file)
--- a/utils/dvb/dvb-fe.c
+++ b/utils/dvb/dvb-fe.c
@@ -119,16 +119,24 @@ struct dvb_v5_fe_parms *dvb_fe_open(int adapter, int frontend, unsigned verbose)
                for (i = 0; i < ARRAY_SIZE(dvb_v5_delivery_system); i++) {
                        if (!dvb_v5_delivery_system[i])
                                continue;
-
                        dtv_prop.num = 1;
                        parms->dvb_prop[0].cmd = DTV_DELIVERY_SYSTEM;
                        parms->dvb_prop[0].u.data = i;
-                       if (ioctl(fd, FE_SET_PROPERTY, &dtv_prop) == -1)
-                               continue;
-                       if (ioctl(fd, FE_GET_PROPERTY, &dtv_prop) == -1)
-                               continue;
-                       if (parms->dvb_prop[0].u.data == i)
-                               parms->systems[parms->num_systems++] = i;
+                       if (i == SYS_ATSC) {
+                               if (!(parms->info.caps & (FE_CAN_8VSB | FE_CAN_16VSB)))
+                                       continue;
+                       } else if (i == SYS_DVBC_ANNEX_B) {
+                               if (!(parms->info.caps & (FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_QAM_AUTO)))
+                                       continue;
+                       } else {
+                               if (ioctl(fd, FE_SET_PROPERTY, &dtv_prop) == -1)
+                                       continue;
+                               if (ioctl(fd, FE_GET_PROPERTY, &dtv_prop) == -1)
+                                       continue;
+                               if (parms->dvb_prop[0].u.data != i)
+                                       continue;
+                       }
+                       parms->systems[parms->num_systems++] = i;
                }
                if (parms->num_systems == 0) {
                        fprintf(stderr, "driver died while trying to set the delivery system\n");