target/fw/l23_api: Properly sync tch in DM EST REQ

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>

diff --git a/src/target/firmware/layer1/l23_api.c b/src/target/firmware/layer1/l23_api.c
index f6a2a9c..4a06e04 100644 (file)
--- a/src/target/firmware/layer1/l23_api.c
+++ b/src/target/firmware/layer1/l23_api.c
@@ -99,6 +99,12 @@ static int  chan_nr2dchan_type(uint8_t chan_nr)
        return GSM_DCHAN_UNKNOWN;
 }
 
+static int chan_nr_is_tch(uint8_t chan_nr)
+{
+       return ((chan_nr >> 3) == 0x01 ||               /* TCH/F */
+               ((chan_nr >> 3) & 0x1e) == 0x02);       /* TCH/H */
+}
+
 struct msgb *l1ctl_msgb_alloc(uint8_t msg_type)
 {
        struct msgb *msg;
@@ -186,8 +192,14 @@ static void l1ctl_rx_dm_est_req(struct msgb *msg)
                l1s.dedicated.h0.arfcn = ntohs(est_req->h0.band_arfcn);
        }
 
-       /* TCH mode */
-       l1a_tch_mode_set(est_req->tch_mode);
+       /* TCH config */
+       if (chan_nr_is_tch(ul->chan_nr)) {
+               /* Mode */
+               l1a_tch_mode_set(est_req->tch_mode);
+
+               /* Sync */
+               l1s.tch_sync = 1;       /* can be set without locking */
+       }
 
        /* figure out which MF tasks to enable */
        l1a_mftask_set(1 << chan_nr2mf_task(ul->chan_nr));