diff --git a/drivers/media/cec/cec-adap.c b/drivers/media/cec/cec-adap.c
index f5fe01c9da8a..303de0d25d2b 100644
--- a/drivers/media/cec/cec-adap.c
+++ b/drivers/media/cec/cec-adap.c
@@ -366,6 +366,8 @@ int cec_thread_func(void *_adap)
 			 * transmit should be canceled.
 			 */
 			err = wait_event_interruptible_timeout(adap->kthread_waitq,
+				(adap->needs_hpd &&
+				 (!adap->is_configured && !adap->is_configuring)) ||
 				kthread_should_stop() ||
 				(!adap->transmitting &&
 				 !list_empty(&adap->transmit_queue)),
@@ -381,7 +383,9 @@ int cec_thread_func(void *_adap)
 
 		mutex_lock(&adap->lock);
 
-		if (kthread_should_stop()) {
+		if ((adap->needs_hpd &&
+		     (!adap->is_configured && !adap->is_configuring)) ||
+		    kthread_should_stop()) {
 			cec_flush(adap);
 			goto unlock;
 		}
@@ -647,7 +651,7 @@ int cec_transmit_msg_fh(struct cec_adapter *adap, struct cec_msg *msg,
 		return -EINVAL;
 	}
 	if (!adap->is_configured && !adap->is_configuring) {
-		if (msg->msg[0] != 0xf0) {
+		if (adap->needs_hpd || msg->msg[0] != 0xf0) {
 			dprintk(1, "%s: adapter is unconfigured\n", __func__);
 			return -ENONET;
 		}
@@ -1126,7 +1130,9 @@ static int cec_config_log_addr(struct cec_adapter *adap,
  */
 static void cec_adap_unconfigure(struct cec_adapter *adap)
 {
-	WARN_ON(adap->ops->adap_log_addr(adap, CEC_LOG_ADDR_INVALID));
+	if (!adap->needs_hpd ||
+	    adap->phys_addr != CEC_PHYS_ADDR_INVALID)
+		WARN_ON(adap->ops->adap_log_addr(adap, CEC_LOG_ADDR_INVALID));
 	adap->log_addrs.log_addr_mask = 0;
 	adap->is_configuring = false;
 	adap->is_configured = false;
@@ -1355,6 +1361,8 @@ void __cec_s_phys_addr(struct cec_adapter *adap, u16 phys_addr, bool block)
 	if (phys_addr == adap->phys_addr || adap->devnode.unregistered)
 		return;
 
+	dprintk(1, "new physical address %x.%x.%x.%x\n",
+		cec_phys_addr_exp(phys_addr));
 	if (phys_addr == CEC_PHYS_ADDR_INVALID ||
 	    adap->phys_addr != CEC_PHYS_ADDR_INVALID) {
 		adap->phys_addr = CEC_PHYS_ADDR_INVALID;
@@ -1364,7 +1372,7 @@ void __cec_s_phys_addr(struct cec_adapter *adap, u16 phys_addr, bool block)
 		if (adap->monitor_all_cnt)
 			WARN_ON(call_op(adap, adap_monitor_all_enable, false));
 		mutex_lock(&adap->devnode.lock);
-		if (list_empty(&adap->devnode.fhs))
+		if (adap->needs_hpd || list_empty(&adap->devnode.fhs))
 			WARN_ON(adap->ops->adap_enable(adap, false));
 		mutex_unlock(&adap->devnode.lock);
 		if (phys_addr == CEC_PHYS_ADDR_INVALID)
@@ -1372,7 +1380,7 @@ void __cec_s_phys_addr(struct cec_adapter *adap, u16 phys_addr, bool block)
 	}
 
 	mutex_lock(&adap->devnode.lock);
-	if (list_empty(&adap->devnode.fhs) &&
+	if ((adap->needs_hpd || list_empty(&adap->devnode.fhs)) &&
 	    adap->ops->adap_enable(adap, true)) {
 		mutex_unlock(&adap->devnode.lock);
 		return;
@@ -1380,7 +1388,7 @@ void __cec_s_phys_addr(struct cec_adapter *adap, u16 phys_addr, bool block)
 
 	if (adap->monitor_all_cnt &&
 	    call_op(adap, adap_monitor_all_enable, true)) {
-		if (list_empty(&adap->devnode.fhs))
+		if (adap->needs_hpd || list_empty(&adap->devnode.fhs))
 			WARN_ON(adap->ops->adap_enable(adap, false));
 		mutex_unlock(&adap->devnode.lock);
 		return;
diff --git a/drivers/media/cec/cec-api.c b/drivers/media/cec/cec-api.c
index 0860fb458757..1359c3977101 100644
--- a/drivers/media/cec/cec-api.c
+++ b/drivers/media/cec/cec-api.c
@@ -202,7 +202,8 @@ static long cec_transmit(struct cec_adapter *adap, struct cec_fh *fh,
 		err = -EPERM;
 	else if (adap->is_configuring)
 		err = -ENONET;
-	else if (!adap->is_configured && msg.msg[0] != 0xf0)
+	else if (!adap->is_configured &&
+		 (adap->needs_hpd || msg.msg[0] != 0xf0))
 		err = -ENONET;
 	else if (cec_is_busy(adap, fh))
 		err = -EBUSY;
@@ -521,6 +522,7 @@ static int cec_open(struct inode *inode, struct file *filp)
 
 	mutex_lock(&devnode->lock);
 	if (list_empty(&devnode->fhs) &&
+	    !adap->needs_hpd &&
 	    adap->phys_addr == CEC_PHYS_ADDR_INVALID) {
 		err = adap->ops->adap_enable(adap, true);
 		if (err) {
@@ -565,6 +567,7 @@ static int cec_release(struct inode *inode, struct file *filp)
 	mutex_lock(&devnode->lock);
 	list_del(&fh->list);
 	if (list_empty(&devnode->fhs) &&
+	    !adap->needs_hpd &&
 	    adap->phys_addr == CEC_PHYS_ADDR_INVALID) {
 		WARN_ON(adap->ops->adap_enable(adap, false));
 	}
diff --git a/drivers/media/cec/cec-core.c b/drivers/media/cec/cec-core.c
index f9ebff90f8eb..0d9a1f481b86 100644
--- a/drivers/media/cec/cec-core.c
+++ b/drivers/media/cec/cec-core.c
@@ -230,6 +230,7 @@ struct cec_adapter *cec_allocate_adapter(const struct cec_adap_ops *ops,
 	adap->log_addrs.cec_version = CEC_OP_CEC_VERSION_2_0;
 	adap->log_addrs.vendor_id = CEC_VENDOR_ID_NONE;
 	adap->capabilities = caps;
+	adap->needs_hpd = caps & CEC_CAP_NEEDS_HPD;
 	adap->available_log_addrs = available_las;
 	adap->sequence = 0;
 	adap->ops = ops;
diff --git a/include/media/cec.h b/include/media/cec.h
index b8eb895731d5..b08edb31508f 100644
--- a/include/media/cec.h
+++ b/include/media/cec.h
@@ -164,6 +164,7 @@ struct cec_adapter {
 	u8 available_log_addrs;
 
 	u16 phys_addr;
+	bool needs_hpd;
 	bool is_configuring;
 	bool is_configured;
 	u32 monitor_all_cnt;
diff --git a/include/uapi/linux/cec.h b/include/uapi/linux/cec.h
index a0dfe27bc6c7..44579a24f95d 100644
--- a/include/uapi/linux/cec.h
+++ b/include/uapi/linux/cec.h
@@ -336,6 +336,8 @@ static inline int cec_is_unconfigured(__u16 log_addr_mask)
 #define CEC_CAP_RC		(1 << 4)
 /* Hardware can monitor all messages, not just directed and broadcast. */
 #define CEC_CAP_MONITOR_ALL	(1 << 5)
+/* Hardware can use CEC only if the HDMI HPD pin is high. */
+#define CEC_CAP_NEEDS_HPD	(1 << 6)
 
 /**
  * struct cec_caps - CEC capabilities structure.
