diff --git a/arch/arm/mach-msm/mdm2.c b/arch/arm/mach-msm/mdm2.c
index 43c85bb5295..3364232215f 100644
--- a/arch/arm/mach-msm/mdm2.c
+++ b/arch/arm/mach-msm/mdm2.c
@@ -112,8 +112,12 @@ static void mdm_power_down_common(struct mdm_modem_drv *mdm_drv)
 
 	/* Wait for the modem to complete its power down actions. */
 	for (i = 20; i > 0; i--) {
-		if (gpio_get_value(mdm_drv->mdm2ap_status_gpio) == 0)
+		if (gpio_get_value(mdm_drv->mdm2ap_status_gpio) == 0) {
+			if (mdm_debug_mask & MDM_DEBUG_MASK_SHDN_LOG)
+				pr_info("%s: mdm2ap_status went low, i = %d\n",
+					__func__, i);
 			break;
+		}
 		msleep(100);
 	}
 	if (i == 0) {
diff --git a/arch/arm/mach-msm/mdm_common.c b/arch/arm/mach-msm/mdm_common.c
index 2ee6938cbfe..0597c62ce41 100644
--- a/arch/arm/mach-msm/mdm_common.c
+++ b/arch/arm/mach-msm/mdm_common.c
@@ -290,6 +290,15 @@ long mdm_modem_ioctl(struct file *filp, unsigned int cmd,
 		} else
 			pr_debug("%s Image upgrade not supported\n", __func__);
 		break;
+	case SHUTDOWN_CHARM:
+		mdm_drv->mdm_ready = 0;
+		if (mdm_debug_mask & MDM_DEBUG_MASK_SHDN_LOG)
+			pr_info("Sending shutdown request to mdm\n");
+		ret = sysmon_send_shutdown(SYSMON_SS_EXT_MODEM);
+		if (ret)
+			pr_err("%s: Graceful shutdown of the external modem failed, ret = %d\n",
+			   __func__, ret);
+		break;
 	default:
 		pr_err("%s: invalid ioctl cmd = %d\n", __func__, _IOC_NR(cmd));
 		ret = -EINVAL;
@@ -382,6 +391,9 @@ static irqreturn_t mdm_status_change(int irq, void *dev_id)
 {
 	int value = gpio_get_value(mdm_drv->mdm2ap_status_gpio);
 
+	if ((mdm_debug_mask & MDM_DEBUG_MASK_SHDN_LOG) && (value == 0))
+		pr_info("%s: mdm2ap_status went low\n", __func__);
+
 	pr_debug("%s: mdm sent status change interrupt\n", __func__);
 	if (value == 0 && mdm_drv->mdm_ready == 1) {
 		pr_info("%s: unexpected reset external modem\n", __func__);
diff --git a/arch/arm/mach-msm/mdm_private.h b/arch/arm/mach-msm/mdm_private.h
index c406b89adc8..9e865c5adee 100644
--- a/arch/arm/mach-msm/mdm_private.h
+++ b/arch/arm/mach-msm/mdm_private.h
@@ -14,6 +14,7 @@
 #define _ARCH_ARM_MACH_MSM_MDM_PRIVATE_H
 
 #define MDM_DEBUG_MASK_VDDMIN_SETUP (0x00000002)
+#define MDM_DEBUG_MASK_SHDN_LOG     (0x00000004)
 #define GPIO_IS_VALID(gpio) \
 	(gpio != -1)
 struct mdm_modem_drv;
diff --git a/arch/arm/mach-msm/sysmon.c b/arch/arm/mach-msm/sysmon.c
index 78290a26344..0d62e6ad875 100644
--- a/arch/arm/mach-msm/sysmon.c
+++ b/arch/arm/mach-msm/sysmon.c
@@ -158,6 +158,33 @@ out:
 	return ret;
 }
 
+/**
+ * sysmon_send_shutdown() - send shutdown command to a
+ * subsystem.
+ * @dest_ss:	ID of subsystem to send to.
+ *
+ * Returns 0 for success, -EINVAL for an invalid destination, -ENODEV if
+ * the SMD transport channel is not open, -ETIMEDOUT if the destination
+ * subsystem does not respond, and -ENOSYS if the destination subsystem
+ * responds with something unexpected.
+ *
+ * If CONFIG_MSM_SYSMON_COMM is not defined, always return success (0).
+ */
+int sysmon_send_shutdown(enum subsys_id dest_ss)
+{
+	struct sysmon_subsys *ss = &subsys[dest_ss];
+	const char tx_buf[] = "ssr:poweroff";
+	int ret;
+
+	if (dest_ss < 0 || dest_ss >= SYSMON_NUM_SS)
+		return -EINVAL;
+
+	mutex_lock(&ss->lock);
+	ret = sysmon_send_msg(ss, tx_buf, ARRAY_SIZE(tx_buf));
+	mutex_unlock(&ss->lock);
+	return ret;
+}
+
 /**
  * sysmon_get_reason() - Retrieve failure reason from a subsystem.
  * @dest_ss:	ID of subsystem to query
diff --git a/arch/arm/mach-msm/sysmon.h b/arch/arm/mach-msm/sysmon.h
index 77c332932d0..439c61764e8 100644
--- a/arch/arm/mach-msm/sysmon.h
+++ b/arch/arm/mach-msm/sysmon.h
@@ -38,6 +38,7 @@ enum subsys_id {
 int sysmon_send_event(enum subsys_id dest_ss, const char *event_ss,
 		      enum subsys_notif_type notif);
 int sysmon_get_reason(enum subsys_id dest_ss, char *buf, size_t len);
+int sysmon_send_shutdown(enum subsys_id dest_ss);
 #else
 static inline int sysmon_send_event(enum subsys_id dest_ss,
 				    const char *event_ss,
diff --git a/include/linux/msm_charm.h b/include/linux/msm_charm.h
index 44d25532f1e..1d1f3bb3dd4 100644
--- a/include/linux/msm_charm.h
+++ b/include/linux/msm_charm.h
@@ -12,6 +12,7 @@
 #define WAIT_FOR_RESTART	_IOR(CHARM_CODE, 7, int)
 #define GET_DLOAD_STATUS	_IOR(CHARM_CODE, 8, int)
 #define IMAGE_UPGRADE		_IOW(CHARM_CODE, 9, int)
+#define SHUTDOWN_CHARM		_IOW(CHARM_CODE, 10, int)
 
 enum charm_boot_type {
 	CHARM_NORMAL_BOOT = 0,