3 files changed, 34 insertions, 2 deletions

diff --git a/drivers/isdn/hardware/mISDN/hfc_multi.h b/drivers/isdn/hardware/mISDN/hfc_multi.h
index 663b77f578be..5765e1962911 100644
--- a/drivers/isdn/hardware/mISDN/hfc_multi.h
+++ b/drivers/isdn/hardware/mISDN/hfc_multi.h
@@ -62,6 +62,7 @@ struct hfcm_hw {
         u_char  r_sci_msk;
         u_char  r_tx0, r_tx1;
         u_char  a_st_ctrl0[8];
+        u_char  r_bert_wd_md;
         timer_t timer;
 };
 
diff --git a/drivers/isdn/hardware/mISDN/hfcmulti.c b/drivers/isdn/hardware/mISDN/hfcmulti.c
index 0b28141e43bf..ca153de6954e 100644
--- a/drivers/isdn/hardware/mISDN/hfcmulti.c
+++ b/drivers/isdn/hardware/mISDN/hfcmulti.c
@@ -4013,11 +4013,41 @@ open_bchannel(struct hfc_multi *hc, struct dchannel *dch,
 static int
 channel_dctrl(struct dchannel *dch, struct mISDN_ctrl_req *cq)
 {
+        struct hfc_multi        *hc = dch->hw;
         int     ret = 0;
+        int     wd_mode, wd_cnt;
 
         switch (cq->op) {
         case MISDN_CTRL_GETOP:
-                cq->op = 0;
+                cq->op = MISDN_CTRL_HFC_OP;
+                break;
+        case MISDN_CTRL_HFC_WD_INIT: /* init the watchdog */
+                wd_cnt = cq->p1 & 0xf;
+                wd_mode = !!(cq->p1 >> 4);
+                if (debug & DEBUG_HFCMULTI_MSG)
+                        printk(KERN_DEBUG
+                            "%s: MISDN_CTRL_HFC_WD_INIT mode %s counter 0x%x\n",
+                            __func__, wd_mode ? "AUTO" : "MANUAL", wd_cnt);
+                /* set the watchdog timer */
+                HFC_outb(hc, R_TI_WD, poll_timer | (wd_cnt << 4));
+                hc->hw.r_bert_wd_md = (wd_mode ? V_AUTO_WD_RES : 0);
+                if (hc->ctype == HFC_TYPE_XHFC)
+                        hc->hw.r_bert_wd_md |= 0x40 /* V_WD_EN */;
+                /* init the watchdog register and reset the counter */
+                HFC_outb(hc, R_BERT_WD_MD, hc->hw.r_bert_wd_md | V_WD_RES);
+                if (test_bit(HFC_CHIP_PLXSD, &hc->chip)) {
+                        /* enable the watchdog output for Speech-Design */
+                        HFC_outb(hc, R_GPIO_SEL, V_GPIO_SEL7);
+                        HFC_outb(hc, R_GPIO_EN1, V_GPIO_EN15);
+                        HFC_outb(hc, R_GPIO_OUT1, 0);
+                        HFC_outb(hc, R_GPIO_OUT1, V_GPIO_OUT15);
+                }
+                break;
+        case MISDN_CTRL_HFC_WD_RESET: /* reset the watchdog counter */
+                if (debug & DEBUG_HFCMULTI_MSG)
+                        printk(KERN_DEBUG "%s: MISDN_CTRL_HFC_WD_RESET\n",
+                            __func__);
+                HFC_outb(hc, R_BERT_WD_MD, hc->hw.r_bert_wd_md | V_WD_RES);
                 break;
         default:
                 printk(KERN_WARNING "%s: unknown Op %x\n",
diff --git a/include/linux/mISDNif.h b/include/linux/mISDNif.h
index 5da3d95b27f1..cf974593a99e 100644
--- a/include/linux/mISDNif.h
+++ b/include/linux/mISDNif.h
@@ -362,7 +362,8 @@ clear_channelmap(u_int nr, u_char *map)
 #define MISDN_CTRL_HFC_RECEIVE_ON       0x4006
 #define MISDN_CTRL_HFC_ECHOCAN_ON       0x4007
 #define MISDN_CTRL_HFC_ECHOCAN_OFF      0x4008
-
+#define MISDN_CTRL_HFC_WD_INIT          0x4009
+#define MISDN_CTRL_HFC_WD_RESET         0x400A
 
 /* socket options */
 #define MISDN_TIME_STAMP                0x0001