Linux-libre 4.4-gnupck-4.4-gnu

24 files changed, 1821 insertions, 502 deletions

diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig
index 0bd88c942..ec6af1595 100644
--- a/drivers/bluetooth/Kconfig
+++ b/drivers/bluetooth/Kconfig
@@ -4,6 +4,7 @@ menu "Bluetooth device drivers"
 
 config BT_INTEL
 	tristate
+	select REGMAP
 
 config BT_BCM
 	tristate
@@ -182,7 +183,8 @@ config BT_HCIBCM203X
 
 config BT_HCIBPA10X
 	tristate "HCI BPA10x USB driver"
-	depends on USB
+	depends on USB && BT_HCIUART
+	select BT_HCIUART_H4
 	help
 	  Bluetooth HCI BPA10x USB driver.
 	  This driver provides support for the Digianswer BPA 100/105 Bluetooth
@@ -275,7 +277,7 @@ config BT_MRVL
 	  The core driver to support Marvell Bluetooth devices.
 
 	  This driver is required if you want to support
-	  Marvell Bluetooth devices, such as 8688/8787/8797/8887/8897.
+	  Marvell Bluetooth devices, such as 8688/8787/8797/8887/8897/8997.
 
 	  Say Y here to compile Marvell Bluetooth driver
 	  into the kernel or say M to compile it as module.
@@ -289,7 +291,7 @@ config BT_MRVL_SDIO
 	  The driver for Marvell Bluetooth chipsets with SDIO interface.
 
 	  This driver is required if you want to use Marvell Bluetooth
-	  devices with SDIO interface. Currently SD8688/SD8787/SD8797/SD8887/SD8897
+	  devices with SDIO interface. Currently SD8688/SD8787/SD8797/SD8887/SD8897/SD8997
 	  chipsets are supported.
 
 	  Say Y here to compile support for Marvell BT-over-SDIO driver
diff --git a/drivers/bluetooth/bfusb.c b/drivers/bluetooth/bfusb.c
index b45c22fe1..53a1066f1 100644
--- a/drivers/bluetooth/bfusb.c
+++ b/drivers/bluetooth/bfusb.c
@@ -422,17 +422,12 @@ static int bfusb_open(struct hci_dev *hdev)
 
 	BT_DBG("hdev %p bfusb %p", hdev, data);
 
-	if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
-		return 0;
-
 	write_lock_irqsave(&data->lock, flags);
 
 	err = bfusb_rx_submit(data, NULL);
 	if (!err) {
 		for (i = 1; i < BFUSB_MAX_BULK_RX; i++)
 			bfusb_rx_submit(data, NULL);
-	} else {
-		clear_bit(HCI_RUNNING, &hdev->flags);
 	}
 
 	write_unlock_irqrestore(&data->lock, flags);
@@ -458,9 +453,6 @@ static int bfusb_close(struct hci_dev *hdev)
 
 	BT_DBG("hdev %p bfusb %p", hdev, data);
 
-	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
-		return 0;
-
 	write_lock_irqsave(&data->lock, flags);
 	write_unlock_irqrestore(&data->lock, flags);
 
@@ -479,9 +471,6 @@ static int bfusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 
 	BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len);
 
-	if (!test_bit(HCI_RUNNING, &hdev->flags))
-		return -EBUSY;
-
 	switch (bt_cb(skb)->pkt_type) {
 	case HCI_COMMAND_PKT:
 		hdev->stat.cmd_tx++;
diff --git a/drivers/bluetooth/bluecard_cs.c b/drivers/bluetooth/bluecard_cs.c
index 35e63aaa6..36fa1c958 100644
--- a/drivers/bluetooth/bluecard_cs.c
+++ b/drivers/bluetooth/bluecard_cs.c
@@ -390,7 +390,7 @@ static void bluecard_receive(struct bluecard_info *info,
 	for (i = 0; i < len; i++) {
 
 		/* Allocate packet */
-		if (info->rx_skb == NULL) {
+		if (!info->rx_skb) {
 			info->rx_state = RECV_WAIT_PACKET_TYPE;
 			info->rx_count = 0;
 			info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
@@ -628,9 +628,6 @@ static int bluecard_hci_open(struct hci_dev *hdev)
 	if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 		bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
 
-	if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
-		return 0;
-
 	if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 		unsigned int iobase = info->p_dev->resource[0]->start;
 
@@ -646,9 +643,6 @@ static int bluecard_hci_close(struct hci_dev *hdev)
 {
 	struct bluecard_info *info = hci_get_drvdata(hdev);
 
-	if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
-		return 0;
-
 	bluecard_hci_flush(hdev);
 
 	if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
diff --git a/drivers/bluetooth/bpa10x.c b/drivers/bluetooth/bpa10x.c
index 8a319913c..49c397e21 100644
--- a/drivers/bluetooth/bpa10x.c
+++ b/drivers/bluetooth/bpa10x.c
@@ -35,7 +35,9 @@
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
 
-#define VERSION "0.10"
+#include "hci_uart.h"
+
+#define VERSION "0.11"
 
 static const struct usb_device_id bpa10x_table[] = {
 	/* Tektronix BPA 100/105 (Digianswer) */
@@ -56,112 +58,6 @@ struct bpa10x_data {
 	struct sk_buff *rx_skb[2];
 };
 
-#define HCI_VENDOR_HDR_SIZE 5
-
-struct hci_vendor_hdr {
-	__u8    type;
-	__le16  snum;
-	__le16  dlen;
-} __packed;
-
-static int bpa10x_recv(struct hci_dev *hdev, int queue, void *buf, int count)
-{
-	struct bpa10x_data *data = hci_get_drvdata(hdev);
-
-	BT_DBG("%s queue %d buffer %p count %d", hdev->name,
-							queue, buf, count);
-
-	if (queue < 0 || queue > 1)
-		return -EILSEQ;
-
-	hdev->stat.byte_rx += count;
-
-	while (count) {
-		struct sk_buff *skb = data->rx_skb[queue];
-		struct { __u8 type; int expect; } *scb;
-		int type, len = 0;
-
-		if (!skb) {
-			/* Start of the frame */
-
-			type = *((__u8 *) buf);
-			count--; buf++;
-
-			switch (type) {
-			case HCI_EVENT_PKT:
-				if (count >= HCI_EVENT_HDR_SIZE) {
-					struct hci_event_hdr *h = buf;
-					len = HCI_EVENT_HDR_SIZE + h->plen;
-				} else
-					return -EILSEQ;
-				break;
-
-			case HCI_ACLDATA_PKT:
-				if (count >= HCI_ACL_HDR_SIZE) {
-					struct hci_acl_hdr *h = buf;
-					len = HCI_ACL_HDR_SIZE +
-							__le16_to_cpu(h->dlen);
-				} else
-					return -EILSEQ;
-				break;
-
-			case HCI_SCODATA_PKT:
-				if (count >= HCI_SCO_HDR_SIZE) {
-					struct hci_sco_hdr *h = buf;
-					len = HCI_SCO_HDR_SIZE + h->dlen;
-				} else
-					return -EILSEQ;
-				break;
-
-			case HCI_VENDOR_PKT:
-				if (count >= HCI_VENDOR_HDR_SIZE) {
-					struct hci_vendor_hdr *h = buf;
-					len = HCI_VENDOR_HDR_SIZE +
-							__le16_to_cpu(h->dlen);
-				} else
-					return -EILSEQ;
-				break;
-			}
-
-			skb = bt_skb_alloc(len, GFP_ATOMIC);
-			if (!skb) {
-				BT_ERR("%s no memory for packet", hdev->name);
-				return -ENOMEM;
-			}
-
-			data->rx_skb[queue] = skb;
-
-			scb = (void *) skb->cb;
-			scb->type = type;
-			scb->expect = len;
-		} else {
-			/* Continuation */
-
-			scb = (void *) skb->cb;
-			len = scb->expect;
-		}
-
-		len = min(len, count);
-
-		memcpy(skb_put(skb, len), buf, len);
-
-		scb->expect -= len;
-
-		if (scb->expect == 0) {
-			/* Complete frame */
-
-			data->rx_skb[queue] = NULL;
-
-			bt_cb(skb)->pkt_type = scb->type;
-			hci_recv_frame(hdev, skb);
-		}
-
-		count -= len; buf += len;
-	}
-
-	return 0;
-}
-
 static void bpa10x_tx_complete(struct urb *urb)
 {
 	struct sk_buff *skb = urb->context;
@@ -184,6 +80,22 @@ done:
 	kfree_skb(skb);
 }
 
+#define HCI_VENDOR_HDR_SIZE 5
+
+#define HCI_RECV_VENDOR \
+	.type = HCI_VENDOR_PKT, \
+	.hlen = HCI_VENDOR_HDR_SIZE, \
+	.loff = 3, \
+	.lsize = 2, \
+	.maxlen = HCI_MAX_FRAME_SIZE
+
+static const struct h4_recv_pkt bpa10x_recv_pkts[] = {
+	{ H4_RECV_ACL,     .recv = hci_recv_frame },
+	{ H4_RECV_SCO,     .recv = hci_recv_frame },
+	{ H4_RECV_EVENT,   .recv = hci_recv_frame },
+	{ HCI_RECV_VENDOR, .recv = hci_recv_diag  },
+};
+
 static void bpa10x_rx_complete(struct urb *urb)
 {
 	struct hci_dev *hdev = urb->context;
@@ -197,11 +109,17 @@ static void bpa10x_rx_complete(struct urb *urb)
 		return;
 
 	if (urb->status == 0) {
-		if (bpa10x_recv(hdev, usb_pipebulk(urb->pipe),
+		bool idx = usb_pipebulk(urb->pipe);
+
+		data->rx_skb[idx] = h4_recv_buf(hdev, data->rx_skb[idx],
 						urb->transfer_buffer,
-						urb->actual_length) < 0) {
+						urb->actual_length,
+						bpa10x_recv_pkts,
+						ARRAY_SIZE(bpa10x_recv_pkts));
+		if (IS_ERR(data->rx_skb[idx])) {
 			BT_ERR("%s corrupted event packet", hdev->name);
 			hdev->stat.err_rx++;
+			data->rx_skb[idx] = NULL;
 		}
 	}
 
@@ -304,9 +222,6 @@ static int bpa10x_open(struct hci_dev *hdev)
 
 	BT_DBG("%s", hdev->name);
 
-	if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
-		return 0;
-
 	err = bpa10x_submit_intr_urb(hdev);
 	if (err < 0)
 		goto error;
@@ -320,8 +235,6 @@ static int bpa10x_open(struct hci_dev *hdev)
 error:
 	usb_kill_anchored_urbs(&data->rx_anchor);
 
-	clear_bit(HCI_RUNNING, &hdev->flags);
-
 	return err;
 }
 
@@ -331,9 +244,6 @@ static int bpa10x_close(struct hci_dev *hdev)
 
 	BT_DBG("%s", hdev->name);
 
-	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
-		return 0;
-
 	usb_kill_anchored_urbs(&data->rx_anchor);
 
 	return 0;
@@ -350,6 +260,24 @@ static int bpa10x_flush(struct hci_dev *hdev)
 	return 0;
 }
 
+static int bpa10x_setup(struct hci_dev *hdev)
+{
+	const u8 req[] = { 0x07 };
+	struct sk_buff *skb;
+
+	BT_DBG("%s", hdev->name);
+
+	/* Read revision string */
+	skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb))
+		return PTR_ERR(skb);
+
+	BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
+
+	kfree_skb(skb);
+	return 0;
+}
+
 static int bpa10x_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 {
 	struct bpa10x_data *data = hci_get_drvdata(hdev);
@@ -360,9 +288,6 @@ static int bpa10x_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 
 	BT_DBG("%s", hdev->name);
 
-	if (!test_bit(HCI_RUNNING, &hdev->flags))
-		return -EBUSY;
-
 	skb->dev = (void *) hdev;
 
 	urb = usb_alloc_urb(0, GFP_ATOMIC);
@@ -431,6 +356,25 @@ static int bpa10x_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 	return 0;
 }
 
+static int bpa10x_set_diag(struct hci_dev *hdev, bool enable)
+{
+	const u8 req[] = { 0x00, enable };
+	struct sk_buff *skb;
+
+	BT_DBG("%s", hdev->name);
+
+	if (!test_bit(HCI_RUNNING, &hdev->flags))
+		return -ENETDOWN;
+
+	/* Enable sniffer operation */
+	skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb))
+		return PTR_ERR(skb);
+
+	kfree_skb(skb);
+	return 0;
+}
+
 static int bpa10x_probe(struct usb_interface *intf, const struct usb_device_id *id)
 {
 	struct bpa10x_data *data;
@@ -465,7 +409,9 @@ static int bpa10x_probe(struct usb_interface *intf, const struct usb_device_id *
 	hdev->open     = bpa10x_open;
 	hdev->close    = bpa10x_close;
 	hdev->flush    = bpa10x_flush;
+	hdev->setup    = bpa10x_setup;
 	hdev->send     = bpa10x_send_frame;
+	hdev->set_diag = bpa10x_set_diag;
 
 	set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
 
diff --git a/drivers/bluetooth/bt3c_cs.c b/drivers/bluetooth/bt3c_cs.c
index 1549f861b..e67d8638b 100644
--- a/drivers/bluetooth/bt3c_cs.c
+++ b/drivers/bluetooth/bt3c_cs.c
@@ -233,7 +233,7 @@ static void bt3c_receive(struct bt3c_info *info)
 		info->hdev->stat.byte_rx++;
 
 		/* Allocate packet */
-		if (info->rx_skb == NULL) {
+		if (!info->rx_skb) {
 			info->rx_state = RECV_WAIT_PACKET_TYPE;
 			info->rx_count = 0;
 			info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
@@ -270,7 +270,6 @@ static void bt3c_receive(struct bt3c_info *info)
 				/* Unknown packet */
 				BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
 				info->hdev->stat.err_rx++;
-				clear_bit(HCI_RUNNING, &(info->hdev->flags));
 
 				kfree_skb(info->rx_skb);
 				info->rx_skb = NULL;
@@ -395,17 +394,12 @@ static int bt3c_hci_flush(struct hci_dev *hdev)
 
 static int bt3c_hci_open(struct hci_dev *hdev)
 {
-	set_bit(HCI_RUNNING, &(hdev->flags));
-
 	return 0;
 }
 
 
 static int bt3c_hci_close(struct hci_dev *hdev)
 {
-	if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
-		return 0;
-
 	bt3c_hci_flush(hdev);
 
 	return 0;
@@ -453,7 +447,8 @@ static int bt3c_load_firmware(struct bt3c_info *info,
 {
 	char *ptr = (char *) firmware;
 	char b[9];
-	unsigned int iobase, size, addr, fcs, tmp;
+	unsigned int iobase, tmp;
+	unsigned long size, addr, fcs;
 	int i, err = 0;
 
 	iobase = info->p_dev->resource[0]->start;
@@ -478,15 +473,18 @@ static int bt3c_load_firmware(struct bt3c_info *info,
 
 		memset(b, 0, sizeof(b));
 		memcpy(b, ptr + 2, 2);
-		size = simple_strtoul(b, NULL, 16);
+		if (kstrtoul(b, 16, &size) < 0)
+			return -EINVAL;
 
 		memset(b, 0, sizeof(b));
 		memcpy(b, ptr + 4, 8);
-		addr = simple_strtoul(b, NULL, 16);
+		if (kstrtoul(b, 16, &addr) < 0)
+			return -EINVAL;
 
 		memset(b, 0, sizeof(b));
 		memcpy(b, ptr + (size * 2) + 2, 2);
-		fcs = simple_strtoul(b, NULL, 16);
+		if (kstrtoul(b, 16, &fcs) < 0)
+			return -EINVAL;
 
 		memset(b, 0, sizeof(b));
 		for (tmp = 0, i = 0; i < size; i++) {
diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c
index 2fc8a6ed7..122b0be8b 100644
--- a/drivers/bluetooth/btbcm.c
+++ b/drivers/bluetooth/btbcm.c
@@ -181,6 +181,27 @@ static int btbcm_reset(struct hci_dev *hdev)
 	return 0;
 }
 
+static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev)
+{
+	struct sk_buff *skb;
+
+	skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL,
+			     HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		BT_ERR("%s: BCM: Reading local name failed (%ld)",
+		       hdev->name, PTR_ERR(skb));
+		return skb;
+	}
+
+	if (skb->len != sizeof(struct hci_rp_read_local_name)) {
+		BT_ERR("%s: BCM: Local name length mismatch", hdev->name);
+		kfree_skb(skb);
+		return ERR_PTR(-EIO);
+	}
+
+	return skb;
+}
+
 static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
 {
 	struct sk_buff *skb;
@@ -302,7 +323,7 @@ int btbcm_initialize(struct hci_dev *hdev, char *fw_name, size_t len)
 	}
 
 	BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
-		hw_name ? : "BCM", (subver & 0x7000) >> 13,
+		hw_name ? : "BCM", (subver & 0xe000) >> 13,
 		(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
 
 	return 0;
@@ -332,7 +353,7 @@ int btbcm_finalize(struct hci_dev *hdev)
 	kfree_skb(skb);
 
 	BT_INFO("%s: BCM (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
-		(subver & 0x7000) >> 13, (subver & 0x1f00) >> 8,
+		(subver & 0xe000) >> 13, (subver & 0x1f00) >> 8,
 		(subver & 0x00ff), rev & 0x0fff);
 
 	btbcm_check_bdaddr(hdev);
@@ -393,6 +414,14 @@ int btbcm_setup_patchram(struct hci_dev *hdev)
 	BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
 	kfree_skb(skb);
 
+	/* Read Local Name */
+	skb = btbcm_read_local_name(hdev);
+	if (IS_ERR(skb))
+		return PTR_ERR(skb);
+
+	BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
+	kfree_skb(skb);
+
 	switch ((rev & 0xf000) >> 12) {
 	case 0:
 	case 3:
@@ -432,7 +461,7 @@ int btbcm_setup_patchram(struct hci_dev *hdev)
 	}
 
 	BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
-		hw_name ? : "BCM", (subver & 0x7000) >> 13,
+		hw_name ? : "BCM", (subver & 0xe000) >> 13,
 		(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
 
 	err = reject_firmware(&fw, fw_name, &hdev->dev);
@@ -461,9 +490,17 @@ int btbcm_setup_patchram(struct hci_dev *hdev)
 	kfree_skb(skb);
 
 	BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
-		hw_name ? : "BCM", (subver & 0x7000) >> 13,
+		hw_name ? : "BCM", (subver & 0xe000) >> 13,
 		(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
 
+	/* Read Local Name */
+	skb = btbcm_read_local_name(hdev);
+	if (IS_ERR(skb))
+		return PTR_ERR(skb);
+
+	BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
+	kfree_skb(skb);
+
 	btbcm_check_bdaddr(hdev);
 
 	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
@@ -475,12 +512,34 @@ EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
 int btbcm_setup_apple(struct hci_dev *hdev)
 {
 	struct sk_buff *skb;
+	int err;
+
+	/* Reset */
+	err = btbcm_reset(hdev);
+	if (err)
+		return err;
 
 	/* Read Verbose Config Version Info */
 	skb = btbcm_read_verbose_config(hdev);
 	if (!IS_ERR(skb)) {
-		BT_INFO("%s: BCM: chip id %u build %4.4u", hdev->name, skb->data[1],
-			get_unaligned_le16(skb->data + 5));
+		BT_INFO("%s: BCM: chip id %u build %4.4u", hdev->name,
+			skb->data[1], get_unaligned_le16(skb->data + 5));
+		kfree_skb(skb);
+	}
+
+	/* Read USB Product Info */
+	skb = btbcm_read_usb_product(hdev);
+	if (!IS_ERR(skb)) {
+		BT_INFO("%s: BCM: product %4.4x:%4.4x", hdev->name,
+			get_unaligned_le16(skb->data + 1),
+			get_unaligned_le16(skb->data + 3));
+		kfree_skb(skb);
+	}
+
+	/* Read Local Name */
+	skb = btbcm_read_local_name(hdev);
+	if (!IS_ERR(skb)) {
+		BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
 		kfree_skb(skb);
 	}
 
diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c
index ddec437f8..5117c1424 100644
--- a/drivers/bluetooth/btintel.c
+++ b/drivers/bluetooth/btintel.c
@@ -22,6 +22,8 @@
  */
 
 #include <linux/module.h>
+#include <linux/firmware.h>
+#include <linux/regmap.h>
 
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
@@ -89,6 +91,75 @@ int btintel_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
 }
 EXPORT_SYMBOL_GPL(btintel_set_bdaddr);
 
+int btintel_set_diag(struct hci_dev *hdev, bool enable)
+{
+	struct sk_buff *skb;
+	u8 param[3];
+	int err;
+
+	if (enable) {
+		param[0] = 0x03;
+		param[1] = 0x03;
+		param[2] = 0x03;
+	} else {
+		param[0] = 0x00;
+		param[1] = 0x00;
+		param[2] = 0x00;
+	}
+
+	skb = __hci_cmd_sync(hdev, 0xfc43, 3, param, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		err = PTR_ERR(skb);
+		if (err == -ENODATA)
+			goto done;
+		BT_ERR("%s: Changing Intel diagnostic mode failed (%d)",
+		       hdev->name, err);
+		return err;
+	}
+	kfree_skb(skb);
+
+done:
+	btintel_set_event_mask(hdev, enable);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(btintel_set_diag);
+
+int btintel_set_diag_mfg(struct hci_dev *hdev, bool enable)
+{
+	struct sk_buff *skb;
+	u8 param[2];
+	int err;
+
+	param[0] = 0x01;
+	param[1] = 0x00;
+
+	skb = __hci_cmd_sync(hdev, 0xfc11, 2, param, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		err = PTR_ERR(skb);
+		BT_ERR("%s: Entering Intel manufacturer mode failed (%d)",
+		       hdev->name, err);
+		return PTR_ERR(skb);
+	}
+	kfree_skb(skb);
+
+	err = btintel_set_diag(hdev, enable);
+
+	param[0] = 0x00;
+	param[1] = 0x00;
+
+	skb = __hci_cmd_sync(hdev, 0xfc11, 2, param, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		err = PTR_ERR(skb);
+		BT_ERR("%s: Leaving Intel manufacturer mode failed (%d)",
+		       hdev->name, err);
+		return PTR_ERR(skb);
+	}
+	kfree_skb(skb);
+
+	return err;
+}
+EXPORT_SYMBOL_GPL(btintel_set_diag_mfg);
+
 void btintel_hw_error(struct hci_dev *hdev, u8 code)
 {
 	struct sk_buff *skb;
@@ -169,6 +240,304 @@ int btintel_secure_send(struct hci_dev *hdev, u8 fragment_type, u32 plen,
 }
 EXPORT_SYMBOL_GPL(btintel_secure_send);
 
+int btintel_load_ddc_config(struct hci_dev *hdev, const char *ddc_name)
+{
+	const struct firmware *fw;
+	struct sk_buff *skb;
+	const u8 *fw_ptr;
+	int err;
+
+	err = reject_firmware_direct(&fw, ddc_name, &hdev->dev);
+	if (err < 0) {
+		bt_dev_err(hdev, "Failed to load Intel DDC file %s (%d)",
+			   ddc_name, err);
+		return err;
+	}
+
+	bt_dev_info(hdev, "Found Intel DDC parameters: %s", ddc_name);
+
+	fw_ptr = fw->data;
+
+	/* DDC file contains one or more DDC structure which has
+	 * Length (1 byte), DDC ID (2 bytes), and DDC value (Length - 2).
+	 */
+	while (fw->size > fw_ptr - fw->data) {
+		u8 cmd_plen = fw_ptr[0] + sizeof(u8);
+
+		skb = __hci_cmd_sync(hdev, 0xfc8b, cmd_plen, fw_ptr,
+				     HCI_INIT_TIMEOUT);
+		if (IS_ERR(skb)) {
+			bt_dev_err(hdev, "Failed to send Intel_Write_DDC (%ld)",
+				   PTR_ERR(skb));
+			release_firmware(fw);
+			return PTR_ERR(skb);
+		}
+
+		fw_ptr += cmd_plen;
+		kfree_skb(skb);
+	}
+
+	release_firmware(fw);
+
+	bt_dev_info(hdev, "Applying Intel DDC parameters completed");
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(btintel_load_ddc_config);
+
+int btintel_set_event_mask(struct hci_dev *hdev, bool debug)
+{
+	u8 mask[8] = { 0x87, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+	struct sk_buff *skb;
+	int err;
+
+	if (debug)
+		mask[1] |= 0x62;
+
+	skb = __hci_cmd_sync(hdev, 0xfc52, 8, mask, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		err = PTR_ERR(skb);
+		BT_ERR("%s: Setting Intel event mask failed (%d)",
+		       hdev->name, err);
+		return err;
+	}
+	kfree_skb(skb);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(btintel_set_event_mask);
+
+int btintel_set_event_mask_mfg(struct hci_dev *hdev, bool debug)
+{
+	struct sk_buff *skb;
+	u8 param[2];
+	int err;
+
+	param[0] = 0x01;
+	param[1] = 0x00;
+
+	skb = __hci_cmd_sync(hdev, 0xfc11, 2, param, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		err = PTR_ERR(skb);
+		BT_ERR("%s: Entering Intel manufacturer mode failed (%d)",
+		       hdev->name, err);
+		return PTR_ERR(skb);
+	}
+	kfree_skb(skb);
+
+	err = btintel_set_event_mask(hdev, debug);
+
+	param[0] = 0x00;
+	param[1] = 0x00;
+
+	skb = __hci_cmd_sync(hdev, 0xfc11, 2, param, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		err = PTR_ERR(skb);
+		BT_ERR("%s: Leaving Intel manufacturer mode failed (%d)",
+		       hdev->name, err);
+		return PTR_ERR(skb);
+	}
+	kfree_skb(skb);
+
+	return err;
+}
+EXPORT_SYMBOL_GPL(btintel_set_event_mask_mfg);
+
+/* ------- REGMAP IBT SUPPORT ------- */
+
+#define IBT_REG_MODE_8BIT  0x00
+#define IBT_REG_MODE_16BIT 0x01
+#define IBT_REG_MODE_32BIT 0x02
+
+struct regmap_ibt_context {
+	struct hci_dev *hdev;
+	__u16 op_write;
+	__u16 op_read;
+};
+
+struct ibt_cp_reg_access {
+	__le32  addr;
+	__u8    mode;
+	__u8    len;
+	__u8    data[0];
+} __packed;
+
+struct ibt_rp_reg_access {
+	__u8    status;
+	__le32  addr;
+	__u8    data[0];
+} __packed;
+
+static int regmap_ibt_read(void *context, const void *addr, size_t reg_size,
+			   void *val, size_t val_size)
+{
+	struct regmap_ibt_context *ctx = context;
+	struct ibt_cp_reg_access cp;
+	struct ibt_rp_reg_access *rp;
+	struct sk_buff *skb;
+	int err = 0;
+
+	if (reg_size != sizeof(__le32))
+		return -EINVAL;
+
+	switch (val_size) {
+	case 1:
+		cp.mode = IBT_REG_MODE_8BIT;
+		break;
+	case 2:
+		cp.mode = IBT_REG_MODE_16BIT;
+		break;
+	case 4:
+		cp.mode = IBT_REG_MODE_32BIT;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/* regmap provides a little-endian formatted addr */
+	cp.addr = *(__le32 *)addr;
+	cp.len = val_size;
+
+	bt_dev_dbg(ctx->hdev, "Register (0x%x) read", le32_to_cpu(cp.addr));
+
+	skb = hci_cmd_sync(ctx->hdev, ctx->op_read, sizeof(cp), &cp,
+			   HCI_CMD_TIMEOUT);
+	if (IS_ERR(skb)) {
+		err = PTR_ERR(skb);
+		bt_dev_err(ctx->hdev, "regmap: Register (0x%x) read error (%d)",
+			   le32_to_cpu(cp.addr), err);
+		return err;
+	}
+
+	if (skb->len != sizeof(*rp) + val_size) {
+		bt_dev_err(ctx->hdev, "regmap: Register (0x%x) read error, bad len",
+			   le32_to_cpu(cp.addr));
+		err = -EINVAL;
+		goto done;
+	}
+
+	rp = (struct ibt_rp_reg_access *)skb->data;
+
+	if (rp->addr != cp.addr) {
+		bt_dev_err(ctx->hdev, "regmap: Register (0x%x) read error, bad addr",
+			   le32_to_cpu(rp->addr));
+		err = -EINVAL;
+		goto done;
+	}
+
+	memcpy(val, rp->data, val_size);
+
+done:
+	kfree_skb(skb);
+	return err;
+}
+
+static int regmap_ibt_gather_write(void *context,
+				   const void *addr, size_t reg_size,
+				   const void *val, size_t val_size)
+{
+	struct regmap_ibt_context *ctx = context;
+	struct ibt_cp_reg_access *cp;
+	struct sk_buff *skb;
+	int plen = sizeof(*cp) + val_size;
+	u8 mode;
+	int err = 0;
+
+	if (reg_size != sizeof(__le32))
+		return -EINVAL;
+
+	switch (val_size) {
+	case 1:
+		mode = IBT_REG_MODE_8BIT;
+		break;
+	case 2:
+		mode = IBT_REG_MODE_16BIT;
+		break;
+	case 4:
+		mode = IBT_REG_MODE_32BIT;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	cp = kmalloc(plen, GFP_KERNEL);
+	if (!cp)
+		return -ENOMEM;
+
+	/* regmap provides a little-endian formatted addr/value */
+	cp->addr = *(__le32 *)addr;
+	cp->mode = mode;
+	cp->len = val_size;
+	memcpy(&cp->data, val, val_size);
+
+	bt_dev_dbg(ctx->hdev, "Register (0x%x) write", le32_to_cpu(cp->addr));
+
+	skb = hci_cmd_sync(ctx->hdev, ctx->op_write, plen, cp, HCI_CMD_TIMEOUT);
+	if (IS_ERR(skb)) {
+		err = PTR_ERR(skb);
+		bt_dev_err(ctx->hdev, "regmap: Register (0x%x) write error (%d)",
+			   le32_to_cpu(cp->addr), err);
+		goto done;
+	}
+	kfree_skb(skb);
+
+done:
+	kfree(cp);
+	return err;
+}
+
+static int regmap_ibt_write(void *context, const void *data, size_t count)
+{
+	/* data contains register+value, since we only support 32bit addr,
+	 * minimum data size is 4 bytes.
+	 */
+	if (WARN_ONCE(count < 4, "Invalid register access"))
+		return -EINVAL;
+
+	return regmap_ibt_gather_write(context, data, 4, data + 4, count - 4);
+}
+
+static void regmap_ibt_free_context(void *context)
+{
+	kfree(context);
+}
+
+static struct regmap_bus regmap_ibt = {
+	.read = regmap_ibt_read,
+	.write = regmap_ibt_write,
+	.gather_write = regmap_ibt_gather_write,
+	.free_context = regmap_ibt_free_context,
+	.reg_format_endian_default = REGMAP_ENDIAN_LITTLE,
+	.val_format_endian_default = REGMAP_ENDIAN_LITTLE,
+};
+
+/* Config is the same for all register regions */
+static const struct regmap_config regmap_ibt_cfg = {
+	.name      = "btintel_regmap",
+	.reg_bits  = 32,
+	.val_bits  = 32,
+};
+
+struct regmap *btintel_regmap_init(struct hci_dev *hdev, u16 opcode_read,
+				   u16 opcode_write)
+{
+	struct regmap_ibt_context *ctx;
+
+	bt_dev_info(hdev, "regmap: Init R%x-W%x region", opcode_read,
+		    opcode_write);
+
+	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+	if (!ctx)
+		return ERR_PTR(-ENOMEM);
+
+	ctx->op_read = opcode_read;
+	ctx->op_write = opcode_write;
+	ctx->hdev = hdev;
+
+	return regmap_init(&hdev->dev, &regmap_ibt, ctx, &regmap_ibt_cfg);
+}
+EXPORT_SYMBOL_GPL(btintel_regmap_init);
+
 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
 MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION);
 MODULE_VERSION(VERSION);
diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h
index b278d1475..07e58e05a 100644
--- a/drivers/bluetooth/btintel.h
+++ b/drivers/bluetooth/btintel.h
@@ -73,11 +73,19 @@ struct intel_secure_send_result {
 
 int btintel_check_bdaddr(struct hci_dev *hdev);
 int btintel_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr);
+int btintel_set_diag(struct hci_dev *hdev, bool enable);
+int btintel_set_diag_mfg(struct hci_dev *hdev, bool enable);
 void btintel_hw_error(struct hci_dev *hdev, u8 code);
 
 void btintel_version_info(struct hci_dev *hdev, struct intel_version *ver);
 int btintel_secure_send(struct hci_dev *hdev, u8 fragment_type, u32 plen,
 			const void *param);
+int btintel_load_ddc_config(struct hci_dev *hdev, const char *ddc_name);
+int btintel_set_event_mask(struct hci_dev *hdev, bool debug);
+int btintel_set_event_mask_mfg(struct hci_dev *hdev, bool debug);
+
+struct regmap *btintel_regmap_init(struct hci_dev *hdev, u16 opcode_read,
+				   u16 opcode_write);
 
 #else
 
@@ -91,11 +99,22 @@ static inline int btintel_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdadd
 	return -EOPNOTSUPP;
 }
 
+static inline int btintel_set_diag(struct hci_dev *hdev, bool enable)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline int btintel_set_diag_mfg(struct hci_dev *hdev, bool enable)
+{
+	return -EOPNOTSUPP;
+}
+
 static inline void btintel_hw_error(struct hci_dev *hdev, u8 code)
 {
 }
 
-static void btintel_version_info(struct hci_dev *hdev, struct intel_version *ver)
+static inline void btintel_version_info(struct hci_dev *hdev,
+					struct intel_version *ver)
 {
 }
 
@@ -105,4 +124,26 @@ static inline int btintel_secure_send(struct hci_dev *hdev, u8 fragment_type,
 	return -EOPNOTSUPP;
 }
 
+static inline int btintel_load_ddc_config(struct hci_dev *hdev,
+					  const char *ddc_name)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline int btintel_set_event_mask(struct hci_dev *hdev, bool debug)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline int btintel_set_event_mask_mfg(struct hci_dev *hdev, bool debug)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline struct regmap *btintel_regmap_init(struct hci_dev *hdev,
+						 u16 opcode_read,
+						 u16 opcode_write)
+{
+	return ERR_PTR(-EINVAL);
+}
 #endif
diff --git a/drivers/bluetooth/btmrvl_main.c b/drivers/bluetooth/btmrvl_main.c
index de05deb44..6af917331 100644
--- a/drivers/bluetooth/btmrvl_main.c
+++ b/drivers/bluetooth/btmrvl_main.c
@@ -184,7 +184,7 @@ static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode,
 	}
 
 	skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC);
-	if (skb == NULL) {
+	if (!skb) {
 		BT_ERR("No free skb");
 		return -ENOMEM;
 	}
@@ -377,20 +377,6 @@ static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
 		return -EINVAL;
 	}
 
-	if (skb_headroom(skb) < BTM_HEADER_LEN) {
-		struct sk_buff *tmp = skb;
-
-		skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
-		if (!skb) {
-			BT_ERR("Tx Error: realloc_headroom failed %d",
-				BTM_HEADER_LEN);
-			skb = tmp;
-			return -EINVAL;
-		}
-
-		kfree_skb(tmp);
-	}
-
 	skb_push(skb, BTM_HEADER_LEN);
 
 	/* header type: byte[3]
@@ -450,13 +436,6 @@ static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 
 	BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
 
-	if (!test_bit(HCI_RUNNING, &hdev->flags)) {
-		BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
-		print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
-							skb->data, skb->len);
-		return -EBUSY;
-	}
-
 	switch (bt_cb(skb)->pkt_type) {
 	case HCI_COMMAND_PKT:
 		hdev->stat.cmd_tx++;
@@ -491,9 +470,6 @@ static int btmrvl_close(struct hci_dev *hdev)
 {
 	struct btmrvl_private *priv = hci_get_drvdata(hdev);
 
-	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
-		return 0;
-
 	skb_queue_purge(&priv->adapter->tx_queue);
 
 	return 0;
@@ -501,8 +477,6 @@ static int btmrvl_close(struct hci_dev *hdev)
 
 static int btmrvl_open(struct hci_dev *hdev)
 {
-	set_bit(HCI_RUNNING, &hdev->flags);
-
 	return 0;
 }
 
@@ -542,14 +516,17 @@ static int btmrvl_check_device_tree(struct btmrvl_private *priv)
 		ret = of_property_read_u8_array(dt_node, "btmrvl,cal-data",
 						cal_data + BT_CAL_HDR_LEN,
 						BT_CAL_DATA_SIZE);
-		if (ret)
+		if (ret) {
+			of_node_put(dt_node);
 			return ret;
+		}
 
 		BT_DBG("Use cal data from device tree");
 		ret = btmrvl_download_cal_data(priv, cal_data,
 					       BT_CAL_DATA_SIZE);
 		if (ret) {
 			BT_ERR("Fail to download calibrate data");
+			of_node_put(dt_node);
 			return ret;
 		}
 	}
diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c
index 40c1aacb4..5591403a7 100644
--- a/drivers/bluetooth/btmrvl_sdio.c
+++ b/drivers/bluetooth/btmrvl_sdio.c
@@ -146,6 +146,29 @@ static const struct btmrvl_sdio_card_reg btmrvl_reg_8897 = {
 	.fw_dump_end = 0xea,
 };
 
+static const struct btmrvl_sdio_card_reg btmrvl_reg_8997 = {
+	.cfg = 0x00,
+	.host_int_mask = 0x08,
+	.host_intstatus = 0x0c,
+	.card_status = 0x5c,
+	.sq_read_base_addr_a0 = 0xf8,
+	.sq_read_base_addr_a1 = 0xf9,
+	.card_revision = 0xc8,
+	.card_fw_status0 = 0xe8,
+	.card_fw_status1 = 0xe9,
+	.card_rx_len = 0xea,
+	.card_rx_unit = 0xeb,
+	.io_port_0 = 0xe4,
+	.io_port_1 = 0xe5,
+	.io_port_2 = 0xe6,
+	.int_read_to_clear = true,
+	.host_int_rsr = 0x04,
+	.card_misc_cfg = 0xD8,
+	.fw_dump_ctrl = 0xf0,
+	.fw_dump_start = 0xf1,
+	.fw_dump_end = 0xf8,
+};
+
 static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
 	.helper		= "/*(DEBLOBBED)*/",
 	.firmware	= "/*(DEBLOBBED)*/",
@@ -191,25 +214,37 @@ static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = {
 	.supports_fw_dump = true,
 };
 
+static const struct btmrvl_sdio_device btmrvl_sdio_sd8997 = {
+	.helper         = NULL,
+	.firmware       = "/*(DEBLOBBED)*/",
+	.reg            = &btmrvl_reg_8997,
+	.support_pscan_win_report = true,
+	.sd_blksz_fw_dl = 256,
+	.supports_fw_dump = true,
+};
+
 static const struct sdio_device_id btmrvl_sdio_ids[] = {
 	/* Marvell SD8688 Bluetooth device */
 	{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105),
-			.driver_data = (unsigned long) &btmrvl_sdio_sd8688 },
+			.driver_data = (unsigned long)&btmrvl_sdio_sd8688 },
 	/* Marvell SD8787 Bluetooth device */
 	{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A),
-			.driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
+			.driver_data = (unsigned long)&btmrvl_sdio_sd8787 },
 	/* Marvell SD8787 Bluetooth AMP device */
 	{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911B),
-			.driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
+			.driver_data = (unsigned long)&btmrvl_sdio_sd8787 },
 	/* Marvell SD8797 Bluetooth device */
 	{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A),
-			.driver_data = (unsigned long) &btmrvl_sdio_sd8797 },
+			.driver_data = (unsigned long)&btmrvl_sdio_sd8797 },
 	/* Marvell SD8887 Bluetooth device */
 	{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9136),
 			.driver_data = (unsigned long)&btmrvl_sdio_sd8887 },
 	/* Marvell SD8897 Bluetooth device */
 	{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912E),
-			.driver_data = (unsigned long) &btmrvl_sdio_sd8897 },
+			.driver_data = (unsigned long)&btmrvl_sdio_sd8897 },
+	/* Marvell SD8997 Bluetooth device */
+	{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9142),
+			.driver_data = (unsigned long)&btmrvl_sdio_sd8997 },
 
 	{ }	/* Terminating entry */
 };
@@ -619,7 +654,7 @@ static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
 
 	/* Allocate buffer */
 	skb = bt_skb_alloc(num_blocks * blksz + BTSDIO_DMA_ALIGN, GFP_ATOMIC);
-	if (skb == NULL) {
+	if (!skb) {
 		BT_ERR("No free skb");
 		ret = -ENOMEM;
 		goto exit;
@@ -1278,6 +1313,12 @@ static void btmrvl_sdio_dump_firmware(struct btmrvl_private *priv)
 
 		if (memory_size == 0) {
 			BT_INFO("Firmware dump finished!");
+			sdio_writeb(card->func, FW_DUMP_READ_DONE,
+				    card->reg->fw_dump_ctrl, &ret);
+			if (ret) {
+				BT_ERR("SDIO Write MEMDUMP_FINISH ERR");
+				goto done;
+			}
 			break;
 		}
 
diff --git a/drivers/bluetooth/btsdio.c b/drivers/bluetooth/btsdio.c
index 83f6437dd..7b624423a 100644
--- a/drivers/bluetooth/btsdio.c
+++ b/drivers/bluetooth/btsdio.c
@@ -194,21 +194,15 @@ static int btsdio_open(struct hci_dev *hdev)
 
 	BT_DBG("%s", hdev->name);
 
-	if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
-		return 0;
-
 	sdio_claim_host(data->func);
 
 	err = sdio_enable_func(data->func);
-	if (err < 0) {
-		clear_bit(HCI_RUNNING, &hdev->flags);
+	if (err < 0)
 		goto release;
-	}
 
 	err = sdio_claim_irq(data->func, btsdio_interrupt);
 	if (err < 0) {
 		sdio_disable_func(data->func);
-		clear_bit(HCI_RUNNING, &hdev->flags);
 		goto release;
 	}
 
@@ -229,9 +223,6 @@ static int btsdio_close(struct hci_dev *hdev)
 
 	BT_DBG("%s", hdev->name);
 
-	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
-		return 0;
-
 	sdio_claim_host(data->func);
 
 	sdio_writeb(data->func, 0x00, REG_EN_INTRD, NULL);
@@ -261,9 +252,6 @@ static int btsdio_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 
 	BT_DBG("%s", hdev->name);
 
-	if (!test_bit(HCI_RUNNING, &hdev->flags))
-		return -EBUSY;
-
 	switch (bt_cb(skb)->pkt_type) {
 	case HCI_COMMAND_PKT:
 		hdev->stat.cmd_tx++;
diff --git a/drivers/bluetooth/btuart_cs.c b/drivers/bluetooth/btuart_cs.c
index abb4d2106..bb8e4025f 100644
--- a/drivers/bluetooth/btuart_cs.c
+++ b/drivers/bluetooth/btuart_cs.c
@@ -38,7 +38,7 @@
 #include <linux/serial.h>
 #include <linux/serial_reg.h>
 #include <linux/bitops.h>
-#include <asm/io.h>
+#include <linux/io.h>
 
 #include <pcmcia/cistpl.h>
 #include <pcmcia/ciscode.h>
@@ -188,7 +188,7 @@ static void btuart_receive(struct btuart_info *info)
 		info->hdev->stat.byte_rx++;
 
 		/* Allocate packet */
-		if (info->rx_skb == NULL) {
+		if (!info->rx_skb) {
 			info->rx_state = RECV_WAIT_PACKET_TYPE;
 			info->rx_count = 0;
 			info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
@@ -223,7 +223,6 @@ static void btuart_receive(struct btuart_info *info)
 				/* Unknown packet */
 				BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
 				info->hdev->stat.err_rx++;
-				clear_bit(HCI_RUNNING, &(info->hdev->flags));
 
 				kfree_skb(info->rx_skb);
 				info->rx_skb = NULL;
@@ -409,17 +408,12 @@ static int btuart_hci_flush(struct hci_dev *hdev)
 
 static int btuart_hci_open(struct hci_dev *hdev)
 {
-	set_bit(HCI_RUNNING, &(hdev->flags));
-
 	return 0;
 }
 
 
 static int btuart_hci_close(struct hci_dev *hdev)
 {
-	if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
-		return 0;
-
 	btuart_hci_flush(hdev);
 
 	return 0;
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 6d8c1e7ca..94b30bb55 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -60,6 +60,8 @@ static struct usb_driver btusb_driver;
 #define BTUSB_QCA_ROME		0x8000
 #define BTUSB_BCM_APPLE		0x10000
 #define BTUSB_REALTEK		0x20000
+#define BTUSB_BCM2045		0x40000
+#define BTUSB_IFNUM_2		0x80000
 
 static const struct usb_device_id btusb_table[] = {
 	/* Generic Bluetooth USB device */
@@ -73,7 +75,7 @@ static const struct usb_device_id btusb_table[] = {
 
 	/* Apple-specific (Broadcom) devices */
 	{ USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
-	  .driver_info = BTUSB_BCM_APPLE },
+	  .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
 
 	/* MediaTek MT76x0E */
 	{ USB_DEVICE(0x0e8d, 0x763f) },
@@ -124,6 +126,9 @@ static const struct usb_device_id btusb_table[] = {
 	/* Broadcom BCM20702B0 (Dynex/Insignia) */
 	{ USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 
+	/* Broadcom BCM43142A0 (Foxconn/Lenovo) */
+	{ USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM },
+
 	/* Foxconn - Hon Hai */
 	{ USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 	  .driver_info = BTUSB_BCM_PATCHRAM },
@@ -164,6 +169,9 @@ static const struct usb_device_id blacklist_table[] = {
 	/* Broadcom BCM2033 without firmware */
 	{ USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 
+	/* Broadcom BCM2045 devices */
+	{ USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
+
 	/* Atheros 3011 with sflash firmware */
 	{ USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 	{ USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
@@ -343,12 +351,14 @@ static const struct usb_device_id blacklist_table[] = {
 #define BTUSB_FIRMWARE_FAILED	8
 #define BTUSB_BOOTING		9
 #define BTUSB_RESET_RESUME	10
+#define BTUSB_DIAG_RUNNING	11
 
 struct btusb_data {
 	struct hci_dev       *hdev;
 	struct usb_device    *udev;
 	struct usb_interface *intf;
 	struct usb_interface *isoc;
+	struct usb_interface *diag;
 
 	unsigned long flags;
 
@@ -363,6 +373,7 @@ struct btusb_data {
 	struct usb_anchor intr_anchor;
 	struct usb_anchor bulk_anchor;
 	struct usb_anchor isoc_anchor;
+	struct usb_anchor diag_anchor;
 	spinlock_t rxlock;
 
 	struct sk_buff *evt_skb;
@@ -374,6 +385,8 @@ struct btusb_data {
 	struct usb_endpoint_descriptor *bulk_rx_ep;
 	struct usb_endpoint_descriptor *isoc_tx_ep;
 	struct usb_endpoint_descriptor *isoc_rx_ep;
+	struct usb_endpoint_descriptor *diag_tx_ep;
+	struct usb_endpoint_descriptor *diag_rx_ep;
 
 	__u8 cmdreq_type;
 	__u8 cmdreq;
@@ -871,6 +884,92 @@ static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 	return err;
 }
 
+static void btusb_diag_complete(struct urb *urb)
+{
+	struct hci_dev *hdev = urb->context;
+	struct btusb_data *data = hci_get_drvdata(hdev);
+	int err;
+
+	BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
+	       urb->actual_length);
+
+	if (urb->status == 0) {
+		struct sk_buff *skb;
+
+		skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
+		if (skb) {
+			memcpy(skb_put(skb, urb->actual_length),
+			       urb->transfer_buffer, urb->actual_length);
+			hci_recv_diag(hdev, skb);
+		}
+	} else if (urb->status == -ENOENT) {
+		/* Avoid suspend failed when usb_kill_urb */
+		return;
+	}
+
+	if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
+		return;
+
+	usb_anchor_urb(urb, &data->diag_anchor);
+	usb_mark_last_busy(data->udev);
+
+	err = usb_submit_urb(urb, GFP_ATOMIC);
+	if (err < 0) {
+		/* -EPERM: urb is being killed;
+		 * -ENODEV: device got disconnected */
+		if (err != -EPERM && err != -ENODEV)
+			BT_ERR("%s urb %p failed to resubmit (%d)",
+			       hdev->name, urb, -err);
+		usb_unanchor_urb(urb);
+	}
+}
+
+static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
+{
+	struct btusb_data *data = hci_get_drvdata(hdev);
+	struct urb *urb;
+	unsigned char *buf;
+	unsigned int pipe;
+	int err, size = HCI_MAX_FRAME_SIZE;
+
+	BT_DBG("%s", hdev->name);
+
+	if (!data->diag_rx_ep)
+		return -ENODEV;
+
+	urb = usb_alloc_urb(0, mem_flags);
+	if (!urb)
+		return -ENOMEM;
+
+	buf = kmalloc(size, mem_flags);
+	if (!buf) {
+		usb_free_urb(urb);
+		return -ENOMEM;
+	}
+
+	pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
+
+	usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
+			  btusb_diag_complete, hdev);
+
+	urb->transfer_flags |= URB_FREE_BUFFER;
+
+	usb_mark_last_busy(data->udev);
+	usb_anchor_urb(urb, &data->diag_anchor);
+
+	err = usb_submit_urb(urb, mem_flags);
+	if (err < 0) {
+		if (err != -EPERM && err != -ENODEV)
+			BT_ERR("%s urb %p submission failed (%d)",
+			       hdev->name, urb, -err);
+		usb_unanchor_urb(urb);
+	}
+
+	usb_free_urb(urb);
+
+	return err;
+}
+
 static void btusb_tx_complete(struct urb *urb)
 {
 	struct sk_buff *skb = urb->context;
@@ -942,9 +1041,6 @@ static int btusb_open(struct hci_dev *hdev)
 
 	data->intf->needs_remote_wakeup = 1;
 
-	if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
-		goto done;
-
 	if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 		goto done;
 
@@ -961,13 +1057,17 @@ static int btusb_open(struct hci_dev *hdev)
 	set_bit(BTUSB_BULK_RUNNING, &data->flags);
 	btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 
+	if (data->diag) {
+		if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
+			set_bit(BTUSB_DIAG_RUNNING, &data->flags);
+	}
+
 done:
 	usb_autopm_put_interface(data->intf);
 	return 0;
 
 failed:
 	clear_bit(BTUSB_INTR_RUNNING, &data->flags);
-	clear_bit(HCI_RUNNING, &hdev->flags);
 	usb_autopm_put_interface(data->intf);
 	return err;
 }
@@ -977,6 +1077,7 @@ static void btusb_stop_traffic(struct btusb_data *data)
 	usb_kill_anchored_urbs(&data->intr_anchor);
 	usb_kill_anchored_urbs(&data->bulk_anchor);
 	usb_kill_anchored_urbs(&data->isoc_anchor);
+	usb_kill_anchored_urbs(&data->diag_anchor);
 }
 
 static int btusb_close(struct hci_dev *hdev)
@@ -986,15 +1087,13 @@ static int btusb_close(struct hci_dev *hdev)
 
 	BT_DBG("%s", hdev->name);
 
-	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
-		return 0;
-
 	cancel_work_sync(&data->work);
 	cancel_work_sync(&data->waker);
 
 	clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 	clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 	clear_bit(BTUSB_INTR_RUNNING, &data->flags);
+	clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
 
 	btusb_stop_traffic(data);
 	btusb_free_frags(data);
@@ -1158,9 +1257,6 @@ static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 
 	BT_DBG("%s", hdev->name);
 
-	if (!test_bit(HCI_RUNNING, &hdev->flags))
-		return -EBUSY;
-
 	switch (bt_cb(skb)->pkt_type) {
 	case HCI_COMMAND_PKT:
 		urb = alloc_ctrl_urb(hdev, skb);
@@ -1276,9 +1372,25 @@ static void btusb_work(struct work_struct *work)
 		}
 
 		if (data->isoc_altsetting != new_alts) {
+			unsigned long flags;
+
 			clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 			usb_kill_anchored_urbs(&data->isoc_anchor);
 
+			/* When isochronous alternate setting needs to be
+			 * changed, because SCO connection has been added
+			 * or removed, a packet fragment may be left in the
+			 * reassembling state. This could lead to wrongly
+			 * assembled fragments.
+			 *
+			 * Clear outstanding fragment when selecting a new
+			 * alternate setting.
+			 */
+			spin_lock_irqsave(&data->rxlock, flags);
+			kfree_skb(data->sco_skb);
+			data->sco_skb = NULL;
+			spin_unlock_irqrestore(&data->rxlock, flags);
+
 			if (__set_isoc_interface(hdev, new_alts) < 0)
 				return;
 		}
@@ -1350,7 +1462,9 @@ static int btusb_setup_csr(struct hci_dev *hdev)
 
 	rp = (struct hci_rp_read_local_version *)skb->data;
 
-	if (le16_to_cpu(rp->manufacturer) != 10) {
+	/* Detect controllers which aren't real CSR ones. */
+	if (le16_to_cpu(rp->manufacturer) != 10 ||
+	    le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
 		/* Clear the reset quirk since this is not an actual
 		 * early Bluetooth 1.1 device from CSR.
 		 */
@@ -1589,8 +1703,7 @@ static int btusb_setup_intel(struct hci_dev *hdev)
 		BT_INFO("%s: Intel device is already patched. patch num: %02x",
 			hdev->name, ver->fw_patch_num);
 		kfree_skb(skb);
-		btintel_check_bdaddr(hdev);
-		return 0;
+		goto complete;
 	}
 
 	/* Opens the firmware patch file based on the firmware version read
@@ -1602,8 +1715,7 @@ static int btusb_setup_intel(struct hci_dev *hdev)
 	fw = btusb_setup_intel_get_fw(hdev, ver);
 	if (!fw) {
 		kfree_skb(skb);
-		btintel_check_bdaddr(hdev);
-		return 0;
+		goto complete;
 	}
 	fw_ptr = fw->data;
 
@@ -1676,8 +1788,7 @@ static int btusb_setup_intel(struct hci_dev *hdev)
 	BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
 		hdev->name);
 
-	btintel_check_bdaddr(hdev);
-	return 0;
+	goto complete;
 
 exit_mfg_disable:
 	/* Disable the manufacturer mode without reset */
@@ -1692,8 +1803,7 @@ exit_mfg_disable:
 
 	BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
 
-	btintel_check_bdaddr(hdev);
-	return 0;
+	goto complete;
 
 exit_mfg_deactivate:
 	release_firmware(fw);
@@ -1713,6 +1823,12 @@ exit_mfg_deactivate:
 	BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
 		hdev->name);
 
+complete:
+	/* Set the event mask for Intel specific vendor events. This enables
+	 * a few extra events that are useful during general operation.
+	 */
+	btintel_set_event_mask_mfg(hdev, false);
+
 	btintel_check_bdaddr(hdev);
 	return 0;
 }
@@ -1829,9 +1945,6 @@ static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
 
 	BT_DBG("%s", hdev->name);
 
-	if (!test_bit(HCI_RUNNING, &hdev->flags))
-		return -EBUSY;
-
 	switch (bt_cb(skb)->pkt_type) {
 	case HCI_COMMAND_PKT:
 		if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
@@ -2005,6 +2118,15 @@ static int btusb_setup_intel_new(struct hci_dev *hdev)
 	BT_INFO("%s: Secure boot is %s", hdev->name,
 		params->secure_boot ? "enabled" : "disabled");
 
+	BT_INFO("%s: OTP lock is %s", hdev->name,
+		params->otp_lock ? "enabled" : "disabled");
+
+	BT_INFO("%s: API lock is %s", hdev->name,
+		params->api_lock ? "enabled" : "disabled");
+
+	BT_INFO("%s: Debug lock is %s", hdev->name,
+		params->debug_lock ? "enabled" : "disabled");
+
 	BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
 		params->min_fw_build_nn, params->min_fw_build_cw,
 		2000 + params->min_fw_build_yy);
@@ -2219,36 +2341,16 @@ done:
 	 * The device can work without DDC parameters, so even if it fails
 	 * to load the file, no need to fail the setup.
 	 */
-	err = reject_firmware_direct(&fw, fwname, &hdev->dev);
-	if (err < 0)
-		return 0;
-
-	BT_INFO("%s: Found Intel DDC parameters: %s", hdev->name, fwname);
+	btintel_load_ddc_config(hdev, fwname);
 
-	fw_ptr = fw->data;
-
-	/* DDC file contains one or more DDC structure which has
-	 * Length (1 byte), DDC ID (2 bytes), and DDC value (Length - 2).
+	/* Set the event mask for Intel specific vendor events. This enables
+	 * a few extra events that are useful during general operation. It
+	 * does not enable any debugging related events.
+	 *
+	 * The device will function correctly without these events enabled
+	 * and thus no need to fail the setup.
 	 */
-	while (fw->size > fw_ptr - fw->data) {
-		u8 cmd_plen = fw_ptr[0] + sizeof(u8);
-
-		skb = __hci_cmd_sync(hdev, 0xfc8b, cmd_plen, fw_ptr,
-				     HCI_INIT_TIMEOUT);
-		if (IS_ERR(skb)) {
-			BT_ERR("%s: Failed to send Intel_Write_DDC (%ld)",
-			       hdev->name, PTR_ERR(skb));
-			release_firmware(fw);
-			return PTR_ERR(skb);
-		}
-
-		fw_ptr += cmd_plen;
-		kfree_skb(skb);
-	}
-
-	release_firmware(fw);
-
-	BT_INFO("%s: Applying Intel DDC parameters completed", hdev->name);
+	btintel_set_event_mask(hdev, false);
 
 	return 0;
 }
@@ -2575,19 +2677,115 @@ static int btusb_setup_qca(struct hci_dev *hdev)
 	return 0;
 }
 
+#ifdef CONFIG_BT_HCIBTUSB_BCM
+static inline int __set_diag_interface(struct hci_dev *hdev)
+{
+	struct btusb_data *data = hci_get_drvdata(hdev);
+	struct usb_interface *intf = data->diag;
+	int i;
+
+	if (!data->diag)
+		return -ENODEV;
+
+	data->diag_tx_ep = NULL;
+	data->diag_rx_ep = NULL;
+
+	for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
+		struct usb_endpoint_descriptor *ep_desc;
+
+		ep_desc = &intf->cur_altsetting->endpoint[i].desc;
+
+		if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
+			data->diag_tx_ep = ep_desc;
+			continue;
+		}
+
+		if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
+			data->diag_rx_ep = ep_desc;
+			continue;
+		}
+	}
+
+	if (!data->diag_tx_ep || !data->diag_rx_ep) {
+		BT_ERR("%s invalid diagnostic descriptors", hdev->name);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
+{
+	struct btusb_data *data = hci_get_drvdata(hdev);
+	struct sk_buff *skb;
+	struct urb *urb;
+	unsigned int pipe;
+
+	if (!data->diag_tx_ep)
+		return ERR_PTR(-ENODEV);
+
+	urb = usb_alloc_urb(0, GFP_KERNEL);
+	if (!urb)
+		return ERR_PTR(-ENOMEM);
+
+	skb = bt_skb_alloc(2, GFP_KERNEL);
+	if (!skb) {
+		usb_free_urb(urb);
+		return ERR_PTR(-ENOMEM);
+	}
+
+	*skb_put(skb, 1) = 0xf0;
+	*skb_put(skb, 1) = enable;
+
+	pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
+
+	usb_fill_bulk_urb(urb, data->udev, pipe,
+			  skb->data, skb->len, btusb_tx_complete, skb);
+
+	skb->dev = (void *)hdev;
+
+	return urb;
+}
+
+static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
+{
+	struct btusb_data *data = hci_get_drvdata(hdev);
+	struct urb *urb;
+
+	if (!data->diag)
+		return -ENODEV;
+
+	if (!test_bit(HCI_RUNNING, &hdev->flags))
+		return -ENETDOWN;
+
+	urb = alloc_diag_urb(hdev, enable);
+	if (IS_ERR(urb))
+		return PTR_ERR(urb);
+
+	return submit_or_queue_tx_urb(hdev, urb);
+}
+#endif
+
 static int btusb_probe(struct usb_interface *intf,
 		       const struct usb_device_id *id)
 {
 	struct usb_endpoint_descriptor *ep_desc;
 	struct btusb_data *data;
 	struct hci_dev *hdev;
+	unsigned ifnum_base;
 	int i, err;
 
 	BT_DBG("intf %p id %p", intf, id);
 
 	/* interface numbers are hardcoded in the spec */
-	if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
-		return -ENODEV;
+	if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
+		if (!(id->driver_info & BTUSB_IFNUM_2))
+			return -ENODEV;
+		if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
+			return -ENODEV;
+	}
+
+	ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
 
 	if (!id->driver_info) {
 		const struct usb_device_id *match;
@@ -2655,6 +2853,7 @@ static int btusb_probe(struct usb_interface *intf,
 	init_usb_anchor(&data->intr_anchor);
 	init_usb_anchor(&data->bulk_anchor);
 	init_usb_anchor(&data->isoc_anchor);
+	init_usb_anchor(&data->diag_anchor);
 	spin_lock_init(&data->rxlock);
 
 	if (id->driver_info & BTUSB_INTEL_NEW) {
@@ -2688,33 +2887,53 @@ static int btusb_probe(struct usb_interface *intf,
 	hdev->send   = btusb_send_frame;
 	hdev->notify = btusb_notify;
 
+	if (id->driver_info & BTUSB_BCM2045)
+		set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
+
 	if (id->driver_info & BTUSB_BCM92035)
 		hdev->setup = btusb_setup_bcm92035;
 
 #ifdef CONFIG_BT_HCIBTUSB_BCM
 	if (id->driver_info & BTUSB_BCM_PATCHRAM) {
+		hdev->manufacturer = 15;
 		hdev->setup = btbcm_setup_patchram;
+		hdev->set_diag = btusb_bcm_set_diag;
 		hdev->set_bdaddr = btbcm_set_bdaddr;
+
+		/* Broadcom LM_DIAG Interface numbers are hardcoded */
+		data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
 	}
 
-	if (id->driver_info & BTUSB_BCM_APPLE)
+	if (id->driver_info & BTUSB_BCM_APPLE) {
+		hdev->manufacturer = 15;
 		hdev->setup = btbcm_setup_apple;
+		hdev->set_diag = btusb_bcm_set_diag;
+
+		/* Broadcom LM_DIAG Interface numbers are hardcoded */
+		data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
+	}
 #endif
 
 	if (id->driver_info & BTUSB_INTEL) {
+		hdev->manufacturer = 2;
 		hdev->setup = btusb_setup_intel;
 		hdev->shutdown = btusb_shutdown_intel;
+		hdev->set_diag = btintel_set_diag_mfg;
 		hdev->set_bdaddr = btintel_set_bdaddr;
 		set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
 		set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
+		set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
 	}
 
 	if (id->driver_info & BTUSB_INTEL_NEW) {
+		hdev->manufacturer = 2;
 		hdev->send = btusb_send_frame_intel;
 		hdev->setup = btusb_setup_intel_new;
 		hdev->hw_error = btintel_hw_error;
+		hdev->set_diag = btintel_set_diag;
 		hdev->set_bdaddr = btintel_set_bdaddr;
 		set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
+		set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
 	}
 
 	if (id->driver_info & BTUSB_MARVELL)
@@ -2725,8 +2944,10 @@ static int btusb_probe(struct usb_interface *intf,
 		set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
 	}
 
-	if (id->driver_info & BTUSB_INTEL_BOOT)
+	if (id->driver_info & BTUSB_INTEL_BOOT) {
+		hdev->manufacturer = 2;
 		set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
+	}
 
 	if (id->driver_info & BTUSB_ATH3012) {
 		hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
@@ -2755,8 +2976,8 @@ static int btusb_probe(struct usb_interface *intf,
 		/* AMP controllers do not support SCO packets */
 		data->isoc = NULL;
 	} else {
-		/* Interface numbers are hardcoded in the specification */
-		data->isoc = usb_ifnum_to_if(data->udev, 1);
+		/* Interface orders are hardcoded in the specification */
+		data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
 	}
 
 	if (!reset)
@@ -2784,7 +3005,7 @@ static int btusb_probe(struct usb_interface *intf,
 			set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
 
 		/* Fake CSR devices with broken commands */
-		if (bcdDevice <= 0x100)
+		if (bcdDevice <= 0x100 || bcdDevice == 0x134)
 			hdev->setup = btusb_setup_csr;
 
 		set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
@@ -2819,6 +3040,16 @@ static int btusb_probe(struct usb_interface *intf,
 		}
 	}
 
+#ifdef CONFIG_BT_HCIBTUSB_BCM
+	if (data->diag) {
+		if (!usb_driver_claim_interface(&btusb_driver,
+						data->diag, data))
+			__set_diag_interface(hdev);
+		else
+			data->diag = NULL;
+	}
+#endif
+
 	err = hci_register_dev(hdev);
 	if (err < 0) {
 		hci_free_dev(hdev);
@@ -2846,12 +3077,25 @@ static void btusb_disconnect(struct usb_interface *intf)
 	if (data->isoc)
 		usb_set_intfdata(data->isoc, NULL);
 
+	if (data->diag)
+		usb_set_intfdata(data->diag, NULL);
+
 	hci_unregister_dev(hdev);
 
-	if (intf == data->isoc)
+	if (intf == data->intf) {
+		if (data->isoc)
+			usb_driver_release_interface(&btusb_driver, data->isoc);
+		if (data->diag)
+			usb_driver_release_interface(&btusb_driver, data->diag);
+	} else if (intf == data->isoc) {
+		if (data->diag)
+			usb_driver_release_interface(&btusb_driver, data->diag);
+		usb_driver_release_interface(&btusb_driver, data->intf);
+	} else if (intf == data->diag) {
 		usb_driver_release_interface(&btusb_driver, data->intf);
-	else if (data->isoc)
-		usb_driver_release_interface(&btusb_driver, data->isoc);
+		if (data->isoc)
+			usb_driver_release_interface(&btusb_driver, data->isoc);
+	}
 
 	hci_free_dev(hdev);
 }
diff --git a/drivers/bluetooth/btwilink.c b/drivers/bluetooth/btwilink.c
index 7a722df97..57eb935ae 100644
--- a/drivers/bluetooth/btwilink.c
+++ b/drivers/bluetooth/btwilink.c
@@ -155,9 +155,6 @@ static int ti_st_open(struct hci_dev *hdev)
 
 	BT_DBG("%s %p", hdev->name, hdev);
 
-	if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
-		return -EBUSY;
-
 	/* provide contexts for callbacks from ST */
 	hst = hci_get_drvdata(hdev);
 
@@ -181,7 +178,6 @@ static int ti_st_open(struct hci_dev *hdev)
 			goto done;
 
 		if (err != -EINPROGRESS) {
-			clear_bit(HCI_RUNNING, &hdev->flags);
 			BT_ERR("st_register failed %d", err);
 			return err;
 		}
@@ -195,7 +191,6 @@ static int ti_st_open(struct hci_dev *hdev)
 			(&hst->wait_reg_completion,
 			 msecs_to_jiffies(BT_REGISTER_TIMEOUT));
 		if (!timeleft) {
-			clear_bit(HCI_RUNNING, &hdev->flags);
 			BT_ERR("Timeout(%d sec),didn't get reg "
 					"completion signal from ST",
 					BT_REGISTER_TIMEOUT / 1000);
@@ -205,7 +200,6 @@ static int ti_st_open(struct hci_dev *hdev)
 		/* Is ST registration callback
 		 * called with ERROR status? */
 		if (hst->reg_status != 0) {
-			clear_bit(HCI_RUNNING, &hdev->flags);
 			BT_ERR("ST registration completed with invalid "
 					"status %d", hst->reg_status);
 			return -EAGAIN;
@@ -215,7 +209,6 @@ done:
 		hst->st_write = ti_st_proto[i].write;
 		if (!hst->st_write) {
 			BT_ERR("undefined ST write function");
-			clear_bit(HCI_RUNNING, &hdev->flags);
 			for (i = 0; i < MAX_BT_CHNL_IDS; i++) {
 				/* Undo registration with ST */
 				err = st_unregister(&ti_st_proto[i]);
@@ -236,9 +229,6 @@ static int ti_st_close(struct hci_dev *hdev)
 	int err, i;
 	struct ti_st *hst = hci_get_drvdata(hdev);
 
-	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
-		return 0;
-
 	for (i = MAX_BT_CHNL_IDS-1; i >= 0; i--) {
 		err = st_unregister(&ti_st_proto[i]);
 		if (err)
@@ -256,9 +246,6 @@ static int ti_st_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 	struct ti_st *hst;
 	long len;
 
-	if (!test_bit(HCI_RUNNING, &hdev->flags))
-		return -EBUSY;
-
 	hst = hci_get_drvdata(hdev);
 
 	/* Prepend skb with frame type */
diff --git a/drivers/bluetooth/dtl1_cs.c b/drivers/bluetooth/dtl1_cs.c
index 84135c54e..5026f66fa 100644
--- a/drivers/bluetooth/dtl1_cs.c
+++ b/drivers/bluetooth/dtl1_cs.c
@@ -357,8 +357,6 @@ static irqreturn_t dtl1_interrupt(int irq, void *dev_inst)
 
 static int dtl1_hci_open(struct hci_dev *hdev)
 {
-	set_bit(HCI_RUNNING, &(hdev->flags));
-
 	return 0;
 }
 
@@ -376,9 +374,6 @@ static int dtl1_hci_flush(struct hci_dev *hdev)
 
 static int dtl1_hci_close(struct hci_dev *hdev)
 {
-	if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
-		return 0;
-
 	dtl1_hci_flush(hdev);
 
 	return 0;
diff --git a/drivers/bluetooth/hci_ath.c b/drivers/bluetooth/hci_ath.c
index 6da5e4ca1..d776dfd51 100644
--- a/drivers/bluetooth/hci_ath.c
+++ b/drivers/bluetooth/hci_ath.c
@@ -243,6 +243,7 @@ static struct sk_buff *ath_dequeue(struct hci_uart *hu)
 static const struct hci_uart_proto athp = {
 	.id		= HCI_UART_ATH3K,
 	.name		= "ATH3K",
+	.manufacturer	= 69,
 	.open		= ath_open,
 	.close		= ath_close,
 	.flush		= ath_flush,
diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
index de00082b8..a93715928 100644
--- a/drivers/bluetooth/hci_bcm.c
+++ b/drivers/bluetooth/hci_bcm.c
@@ -31,6 +31,9 @@
 #include <linux/clk.h>
 #include <linux/gpio/consumer.h>
 #include <linux/tty.h>
+#include <linux/interrupt.h>
+#include <linux/dmi.h>
+#include <linux/pm_runtime.h>
 
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
@@ -38,6 +41,11 @@
 #include "btbcm.h"
 #include "hci_uart.h"
 
+#define BCM_LM_DIAG_PKT 0x07
+#define BCM_LM_DIAG_SIZE 63
+
+#define BCM_AUTOSUSPEND_DELAY	5000 /* default autosleep delay */
+
 struct bcm_device {
 	struct list_head	list;
 
@@ -51,8 +59,10 @@ struct bcm_device {
 	bool			clk_enabled;
 
 	u32			init_speed;
+	int			irq;
+	u8			irq_polarity;
 
-#ifdef CONFIG_PM_SLEEP
+#ifdef CONFIG_PM
 	struct hci_uart		*hu;
 	bool			is_suspended; /* suspend/resume flag */
 #endif
@@ -66,7 +76,7 @@ struct bcm_data {
 };
 
 /* List of BCM BT UART devices */
-static DEFINE_SPINLOCK(bcm_device_lock);
+static DEFINE_MUTEX(bcm_device_lock);
 static LIST_HEAD(bcm_device_list);
 
 static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed)
@@ -80,7 +90,7 @@ static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed)
 
 		clock.type = BCM_UART_CLOCK_48MHZ;
 
-		BT_DBG("%s: Set Controller clock (%d)", hdev->name, clock.type);
+		bt_dev_dbg(hdev, "Set Controller clock (%d)", clock.type);
 
 		/* This Broadcom specific command changes the UART's controller
 		 * clock for baud rate > 3000000.
@@ -88,15 +98,15 @@ static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed)
 		skb = __hci_cmd_sync(hdev, 0xfc45, 1, &clock, HCI_INIT_TIMEOUT);
 		if (IS_ERR(skb)) {
 			int err = PTR_ERR(skb);
-			BT_ERR("%s: BCM: failed to write clock command (%d)",
-			       hdev->name, err);
+			bt_dev_err(hdev, "BCM: failed to write clock (%d)",
+				   err);
 			return err;
 		}
 
 		kfree_skb(skb);
 	}
 
-	BT_DBG("%s: Set Controller UART speed to %d bit/s", hdev->name, speed);
+	bt_dev_dbg(hdev, "Set Controller UART speed to %d bit/s", speed);
 
 	param.zero = cpu_to_le16(0);
 	param.baud_rate = cpu_to_le32(speed);
@@ -108,8 +118,8 @@ static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed)
 			     HCI_INIT_TIMEOUT);
 	if (IS_ERR(skb)) {
 		int err = PTR_ERR(skb);
-		BT_ERR("%s: BCM: failed to write update baudrate command (%d)",
-		       hdev->name, err);
+		bt_dev_err(hdev, "BCM: failed to write update baudrate (%d)",
+			   err);
 		return err;
 	}
 
@@ -149,12 +159,125 @@ static int bcm_gpio_set_power(struct bcm_device *dev, bool powered)
 	return 0;
 }
 
+#ifdef CONFIG_PM
+static irqreturn_t bcm_host_wake(int irq, void *data)
+{
+	struct bcm_device *bdev = data;
+
+	bt_dev_dbg(bdev, "Host wake IRQ");
+
+	pm_runtime_get(&bdev->pdev->dev);
+	pm_runtime_mark_last_busy(&bdev->pdev->dev);
+	pm_runtime_put_autosuspend(&bdev->pdev->dev);
+
+	return IRQ_HANDLED;
+}
+
+static int bcm_request_irq(struct bcm_data *bcm)
+{
+	struct bcm_device *bdev = bcm->dev;
+	int err = 0;
+
+	/* If this is not a platform device, do not enable PM functionalities */
+	mutex_lock(&bcm_device_lock);
+	if (!bcm_device_exists(bdev)) {
+		err = -ENODEV;
+		goto unlock;
+	}
+
+	if (bdev->irq > 0) {
+		err = devm_request_irq(&bdev->pdev->dev, bdev->irq,
+				       bcm_host_wake, IRQF_TRIGGER_RISING,
+				       "host_wake", bdev);
+		if (err)
+			goto unlock;
+
+		device_init_wakeup(&bdev->pdev->dev, true);
+
+		pm_runtime_set_autosuspend_delay(&bdev->pdev->dev,
+						 BCM_AUTOSUSPEND_DELAY);
+		pm_runtime_use_autosuspend(&bdev->pdev->dev);
+		pm_runtime_set_active(&bdev->pdev->dev);
+		pm_runtime_enable(&bdev->pdev->dev);
+	}
+
+unlock:
+	mutex_unlock(&bcm_device_lock);
+
+	return err;
+}
+
+static const struct bcm_set_sleep_mode default_sleep_params = {
+	.sleep_mode = 1,	/* 0=Disabled, 1=UART, 2=Reserved, 3=USB */
+	.idle_host = 2,		/* idle threshold HOST, in 300ms */
+	.idle_dev = 2,		/* idle threshold device, in 300ms */
+	.bt_wake_active = 1,	/* BT_WAKE active mode: 1 = high, 0 = low */
+	.host_wake_active = 0,	/* HOST_WAKE active mode: 1 = high, 0 = low */
+	.allow_host_sleep = 1,	/* Allow host sleep in SCO flag */
+	.combine_modes = 1,	/* Combine sleep and LPM flag */
+	.tristate_control = 0,	/* Allow tri-state control of UART tx flag */
+	/* Irrelevant USB flags */
+	.usb_auto_sleep = 0,
+	.usb_resume_timeout = 0,
+	.pulsed_host_wake = 0,
+	.break_to_host = 0
+};
+
+static int bcm_setup_sleep(struct hci_uart *hu)
+{
+	struct bcm_data *bcm = hu->priv;
+	struct sk_buff *skb;
+	struct bcm_set_sleep_mode sleep_params = default_sleep_params;
+
+	sleep_params.host_wake_active = !bcm->dev->irq_polarity;
+
+	skb = __hci_cmd_sync(hu->hdev, 0xfc27, sizeof(sleep_params),
+			     &sleep_params, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		int err = PTR_ERR(skb);
+		bt_dev_err(hu->hdev, "Sleep VSC failed (%d)", err);
+		return err;
+	}
+	kfree_skb(skb);
+
+	bt_dev_dbg(hu->hdev, "Set Sleep Parameters VSC succeeded");
+
+	return 0;
+}
+#else
+static inline int bcm_request_irq(struct bcm_data *bcm) { return 0; }
+static inline int bcm_setup_sleep(struct hci_uart *hu) { return 0; }
+#endif
+
+static int bcm_set_diag(struct hci_dev *hdev, bool enable)
+{
+	struct hci_uart *hu = hci_get_drvdata(hdev);
+	struct bcm_data *bcm = hu->priv;
+	struct sk_buff *skb;
+
+	if (!test_bit(HCI_RUNNING, &hdev->flags))
+		return -ENETDOWN;
+
+	skb = bt_skb_alloc(3, GFP_KERNEL);
+	if (!skb)
+		return -ENOMEM;
+
+	*skb_put(skb, 1) = BCM_LM_DIAG_PKT;
+	*skb_put(skb, 1) = 0xf0;
+	*skb_put(skb, 1) = enable;
+
+	skb_queue_tail(&bcm->txq, skb);
+	hci_uart_tx_wakeup(hu);
+
+	return 0;
+}
+
 static int bcm_open(struct hci_uart *hu)
 {
 	struct bcm_data *bcm;
 	struct list_head *p;
 
-	BT_DBG("hu %p", hu);
+	bt_dev_dbg(hu->hdev, "hu %p", hu);
 
 	bcm = kzalloc(sizeof(*bcm), GFP_KERNEL);
 	if (!bcm)
@@ -164,7 +287,7 @@ static int bcm_open(struct hci_uart *hu)
 
 	hu->priv = bcm;
 
-	spin_lock(&bcm_device_lock);
+	mutex_lock(&bcm_device_lock);
 	list_for_each(p, &bcm_device_list) {
 		struct bcm_device *dev = list_entry(p, struct bcm_device, list);
 
@@ -175,17 +298,15 @@ static int bcm_open(struct hci_uart *hu)
 		if (hu->tty->dev->parent == dev->pdev->dev.parent) {
 			bcm->dev = dev;
 			hu->init_speed = dev->init_speed;
-#ifdef CONFIG_PM_SLEEP
+#ifdef CONFIG_PM
 			dev->hu = hu;
 #endif
+			bcm_gpio_set_power(bcm->dev, true);
 			break;
 		}
 	}
 
-	if (bcm->dev)
-		bcm_gpio_set_power(bcm->dev, true);
-
-	spin_unlock(&bcm_device_lock);
+	mutex_unlock(&bcm_device_lock);
 
 	return 0;
 }
@@ -193,18 +314,27 @@ static int bcm_open(struct hci_uart *hu)
 static int bcm_close(struct hci_uart *hu)
 {
 	struct bcm_data *bcm = hu->priv;
+	struct bcm_device *bdev = bcm->dev;
 
-	BT_DBG("hu %p", hu);
+	bt_dev_dbg(hu->hdev, "hu %p", hu);
 
 	/* Protect bcm->dev against removal of the device or driver */
-	spin_lock(&bcm_device_lock);
-	if (bcm_device_exists(bcm->dev)) {
-		bcm_gpio_set_power(bcm->dev, false);
-#ifdef CONFIG_PM_SLEEP
-		bcm->dev->hu = NULL;
+	mutex_lock(&bcm_device_lock);
+	if (bcm_device_exists(bdev)) {
+		bcm_gpio_set_power(bdev, false);
+#ifdef CONFIG_PM
+		pm_runtime_disable(&bdev->pdev->dev);
+		pm_runtime_set_suspended(&bdev->pdev->dev);
+
+		if (device_can_wakeup(&bdev->pdev->dev)) {
+			devm_free_irq(&bdev->pdev->dev, bdev->irq, bdev);
+			device_init_wakeup(&bdev->pdev->dev, false);
+		}
+
+		bdev->hu = NULL;
 #endif
 	}
-	spin_unlock(&bcm_device_lock);
+	mutex_unlock(&bcm_device_lock);
 
 	skb_queue_purge(&bcm->txq);
 	kfree_skb(bcm->rx_skb);
@@ -218,7 +348,7 @@ static int bcm_flush(struct hci_uart *hu)
 {
 	struct bcm_data *bcm = hu->priv;
 
-	BT_DBG("hu %p", hu);
+	bt_dev_dbg(hu->hdev, "hu %p", hu);
 
 	skb_queue_purge(&bcm->txq);
 
@@ -227,13 +357,15 @@ static int bcm_flush(struct hci_uart *hu)
 
 static int bcm_setup(struct hci_uart *hu)
 {
+	struct bcm_data *bcm = hu->priv;
 	char fw_name[64];
 	const struct firmware *fw;
 	unsigned int speed;
 	int err;
 
-	BT_DBG("hu %p", hu);
+	bt_dev_dbg(hu->hdev, "hu %p", hu);
 
+	hu->hdev->set_diag = bcm_set_diag;
 	hu->hdev->set_bdaddr = btbcm_set_bdaddr;
 
 	err = btbcm_initialize(hu->hdev, fw_name, sizeof(fw_name));
@@ -242,13 +374,13 @@ static int bcm_setup(struct hci_uart *hu)
 
 	err = reject_firmware(&fw, fw_name, &hu->hdev->dev);
 	if (err < 0) {
-		BT_INFO("%s: BCM: Patch %s not found", hu->hdev->name, fw_name);
+		bt_dev_info(hu->hdev, "BCM: Patch %s not found", fw_name);
 		return 0;
 	}
 
 	err = btbcm_patchram(hu->hdev, fw);
 	if (err) {
-		BT_INFO("%s: BCM: Patch failed (%d)", hu->hdev->name, err);
+		bt_dev_info(hu->hdev, "BCM: Patch failed (%d)", err);
 		goto finalize;
 	}
 
@@ -281,14 +413,28 @@ finalize:
 	release_firmware(fw);
 
 	err = btbcm_finalize(hu->hdev);
+	if (err)
+		return err;
+
+	err = bcm_request_irq(bcm);
+	if (!err)
+		err = bcm_setup_sleep(hu);
 
 	return err;
 }
 
+#define BCM_RECV_LM_DIAG \
+	.type = BCM_LM_DIAG_PKT, \
+	.hlen = BCM_LM_DIAG_SIZE, \
+	.loff = 0, \
+	.lsize = 0, \
+	.maxlen = BCM_LM_DIAG_SIZE
+
 static const struct h4_recv_pkt bcm_recv_pkts[] = {
-	{ H4_RECV_ACL,   .recv = hci_recv_frame },
-	{ H4_RECV_SCO,   .recv = hci_recv_frame },
-	{ H4_RECV_EVENT, .recv = hci_recv_frame },
+	{ H4_RECV_ACL,      .recv = hci_recv_frame },
+	{ H4_RECV_SCO,      .recv = hci_recv_frame },
+	{ H4_RECV_EVENT,    .recv = hci_recv_frame },
+	{ BCM_RECV_LM_DIAG, .recv = hci_recv_diag  },
 };
 
 static int bcm_recv(struct hci_uart *hu, const void *data, int count)
@@ -302,9 +448,18 @@ static int bcm_recv(struct hci_uart *hu, const void *data, int count)
 				  bcm_recv_pkts, ARRAY_SIZE(bcm_recv_pkts));
 	if (IS_ERR(bcm->rx_skb)) {
 		int err = PTR_ERR(bcm->rx_skb);
-		BT_ERR("%s: Frame reassembly failed (%d)", hu->hdev->name, err);
+		bt_dev_err(hu->hdev, "Frame reassembly failed (%d)", err);
 		bcm->rx_skb = NULL;
 		return err;
+	} else if (!bcm->rx_skb) {
+		/* Delay auto-suspend when receiving completed packet */
+		mutex_lock(&bcm_device_lock);
+		if (bcm->dev && bcm_device_exists(bcm->dev)) {
+			pm_runtime_get(&bcm->dev->pdev->dev);
+			pm_runtime_mark_last_busy(&bcm->dev->pdev->dev);
+			pm_runtime_put_autosuspend(&bcm->dev->pdev->dev);
+		}
+		mutex_unlock(&bcm_device_lock);
 	}
 
 	return count;
@@ -314,7 +469,7 @@ static int bcm_enqueue(struct hci_uart *hu, struct sk_buff *skb)
 {
 	struct bcm_data *bcm = hu->priv;
 
-	BT_DBG("hu %p skb %p", hu, skb);
+	bt_dev_dbg(hu->hdev, "hu %p skb %p", hu, skb);
 
 	/* Prepend skb with frame type */
 	memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
@@ -326,39 +481,105 @@ static int bcm_enqueue(struct hci_uart *hu, struct sk_buff *skb)
 static struct sk_buff *bcm_dequeue(struct hci_uart *hu)
 {
 	struct bcm_data *bcm = hu->priv;
+	struct sk_buff *skb = NULL;
+	struct bcm_device *bdev = NULL;
+
+	mutex_lock(&bcm_device_lock);
+
+	if (bcm_device_exists(bcm->dev)) {
+		bdev = bcm->dev;
+		pm_runtime_get_sync(&bdev->pdev->dev);
+		/* Shall be resumed here */
+	}
+
+	skb = skb_dequeue(&bcm->txq);
+
+	if (bdev) {
+		pm_runtime_mark_last_busy(&bdev->pdev->dev);
+		pm_runtime_put_autosuspend(&bdev->pdev->dev);
+	}
+
+	mutex_unlock(&bcm_device_lock);
 
-	return skb_dequeue(&bcm->txq);
+	return skb;
 }
 
-#ifdef CONFIG_PM_SLEEP
-/* Platform suspend callback */
-static int bcm_suspend(struct device *dev)
+#ifdef CONFIG_PM
+static int bcm_suspend_device(struct device *dev)
 {
 	struct bcm_device *bdev = platform_get_drvdata(to_platform_device(dev));
 
-	BT_DBG("suspend (%p): is_suspended %d", bdev, bdev->is_suspended);
+	bt_dev_dbg(bdev, "");
 
-	spin_lock(&bcm_device_lock);
-
-	if (!bdev->hu)
-		goto unlock;
-
-	if (!bdev->is_suspended) {
+	if (!bdev->is_suspended && bdev->hu) {
 		hci_uart_set_flow_control(bdev->hu, true);
 
-		/* Once this callback returns, driver suspends BT via GPIO */
+		/* Once this returns, driver suspends BT via GPIO */
 		bdev->is_suspended = true;
 	}
 
 	/* Suspend the device */
 	if (bdev->device_wakeup) {
 		gpiod_set_value(bdev->device_wakeup, false);
-		BT_DBG("suspend, delaying 15 ms");
+		bt_dev_dbg(bdev, "suspend, delaying 15 ms");
 		mdelay(15);
 	}
 
+	return 0;
+}
+
+static int bcm_resume_device(struct device *dev)
+{
+	struct bcm_device *bdev = platform_get_drvdata(to_platform_device(dev));
+
+	bt_dev_dbg(bdev, "");
+
+	if (bdev->device_wakeup) {
+		gpiod_set_value(bdev->device_wakeup, true);
+		bt_dev_dbg(bdev, "resume, delaying 15 ms");
+		mdelay(15);
+	}
+
+	/* When this executes, the device has woken up already */
+	if (bdev->is_suspended && bdev->hu) {
+		bdev->is_suspended = false;
+
+		hci_uart_set_flow_control(bdev->hu, false);
+	}
+
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_PM_SLEEP
+/* Platform suspend callback */
+static int bcm_suspend(struct device *dev)
+{
+	struct bcm_device *bdev = platform_get_drvdata(to_platform_device(dev));
+	int error;
+
+	bt_dev_dbg(bdev, "suspend: is_suspended %d", bdev->is_suspended);
+
+	/* bcm_suspend can be called at any time as long as platform device is
+	 * bound, so it should use bcm_device_lock to protect access to hci_uart
+	 * and device_wake-up GPIO.
+	 */
+	mutex_lock(&bcm_device_lock);
+
+	if (!bdev->hu)
+		goto unlock;
+
+	if (pm_runtime_active(dev))
+		bcm_suspend_device(dev);
+
+	if (device_may_wakeup(&bdev->pdev->dev)) {
+		error = enable_irq_wake(bdev->irq);
+		if (!error)
+			bt_dev_dbg(bdev, "BCM irq: enabled");
+	}
+
 unlock:
-	spin_unlock(&bcm_device_lock);
+	mutex_unlock(&bcm_device_lock);
 
 	return 0;
 }
@@ -368,28 +589,30 @@ static int bcm_resume(struct device *dev)
 {
 	struct bcm_device *bdev = platform_get_drvdata(to_platform_device(dev));
 
-	BT_DBG("resume (%p): is_suspended %d", bdev, bdev->is_suspended);
+	bt_dev_dbg(bdev, "resume: is_suspended %d", bdev->is_suspended);
 
-	spin_lock(&bcm_device_lock);
+	/* bcm_resume can be called at any time as long as platform device is
+	 * bound, so it should use bcm_device_lock to protect access to hci_uart
+	 * and device_wake-up GPIO.
+	 */
+	mutex_lock(&bcm_device_lock);
 
 	if (!bdev->hu)
 		goto unlock;
 
-	if (bdev->device_wakeup) {
-		gpiod_set_value(bdev->device_wakeup, true);
-		BT_DBG("resume, delaying 15 ms");
-		mdelay(15);
+	if (device_may_wakeup(&bdev->pdev->dev)) {
+		disable_irq_wake(bdev->irq);
+		bt_dev_dbg(bdev, "BCM irq: disabled");
 	}
 
-	/* When this callback executes, the device has woken up already */
-	if (bdev->is_suspended) {
-		bdev->is_suspended = false;
-
-		hci_uart_set_flow_control(bdev->hu, false);
-	}
+	bcm_resume_device(dev);
 
 unlock:
-	spin_unlock(&bcm_device_lock);
+	mutex_unlock(&bcm_device_lock);
+
+	pm_runtime_disable(dev);
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
 
 	return 0;
 }
@@ -397,24 +620,59 @@ unlock:
 
 static const struct acpi_gpio_params device_wakeup_gpios = { 0, 0, false };
 static const struct acpi_gpio_params shutdown_gpios = { 1, 0, false };
+static const struct acpi_gpio_params host_wakeup_gpios = { 2, 0, false };
 
 static const struct acpi_gpio_mapping acpi_bcm_default_gpios[] = {
 	{ "device-wakeup-gpios", &device_wakeup_gpios, 1 },
 	{ "shutdown-gpios", &shutdown_gpios, 1 },
+	{ "host-wakeup-gpios", &host_wakeup_gpios, 1 },
 	{ },
 };
 
 #ifdef CONFIG_ACPI
+static u8 acpi_active_low = ACPI_ACTIVE_LOW;
+
+/* IRQ polarity of some chipsets are not defined correctly in ACPI table. */
+static const struct dmi_system_id bcm_wrong_irq_dmi_table[] = {
+	{
+		.ident = "Asus T100TA",
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR,
+					"ASUSTeK COMPUTER INC."),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100TA"),
+		},
+		.driver_data = &acpi_active_low,
+	},
+	{ }
+};
+
 static int bcm_resource(struct acpi_resource *ares, void *data)
 {
 	struct bcm_device *dev = data;
-
-	if (ares->type == ACPI_RESOURCE_TYPE_SERIAL_BUS) {
-		struct acpi_resource_uart_serialbus *sb;
-
+	struct acpi_resource_extended_irq *irq;
+	struct acpi_resource_gpio *gpio;
+	struct acpi_resource_uart_serialbus *sb;
+
+	switch (ares->type) {
+	case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
+		irq = &ares->data.extended_irq;
+		dev->irq_polarity = irq->polarity;
+		break;
+
+	case ACPI_RESOURCE_TYPE_GPIO:
+		gpio = &ares->data.gpio;
+		if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT)
+			dev->irq_polarity = gpio->polarity;
+		break;
+
+	case ACPI_RESOURCE_TYPE_SERIAL_BUS:
 		sb = &ares->data.uart_serial_bus;
 		if (sb->type == ACPI_RESOURCE_SERIAL_TYPE_UART)
 			dev->init_speed = sb->default_baud_rate;
+		break;
+
+	default:
+		break;
 	}
 
 	/* Always tell the ACPI core to skip this resource */
@@ -424,15 +682,10 @@ static int bcm_resource(struct acpi_resource *ares, void *data)
 static int bcm_acpi_probe(struct bcm_device *dev)
 {
 	struct platform_device *pdev = dev->pdev;
-	const struct acpi_device_id *id;
-	struct acpi_device *adev;
 	LIST_HEAD(resources);
+	const struct dmi_system_id *dmi_id;
 	int ret;
 
-	id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev);
-	if (!id)
-		return -ENODEV;
-
 	/* Retrieve GPIO data */
 	dev->name = dev_name(&pdev->dev);
 	ret = acpi_dev_add_driver_gpios(ACPI_COMPANION(&pdev->dev),
@@ -453,6 +706,21 @@ static int bcm_acpi_probe(struct bcm_device *dev)
 	if (IS_ERR(dev->shutdown))
 		return PTR_ERR(dev->shutdown);
 
+	/* IRQ can be declared in ACPI table as Interrupt or GpioInt */
+	dev->irq = platform_get_irq(pdev, 0);
+	if (dev->irq <= 0) {
+		struct gpio_desc *gpio;
+
+		gpio = devm_gpiod_get_optional(&pdev->dev, "host-wakeup",
+					       GPIOD_IN);
+		if (IS_ERR(gpio))
+			return PTR_ERR(gpio);
+
+		dev->irq = gpiod_to_irq(gpio);
+	}
+
+	dev_info(&pdev->dev, "BCM irq: %d\n", dev->irq);
+
 	/* Make sure at-least one of the GPIO is defined and that
 	 * a name is specified for this instance
 	 */
@@ -462,11 +730,18 @@ static int bcm_acpi_probe(struct bcm_device *dev)
 	}
 
 	/* Retrieve UART ACPI info */
-	adev = ACPI_COMPANION(&dev->pdev->dev);
-	if (!adev)
-		return 0;
+	ret = acpi_dev_get_resources(ACPI_COMPANION(&dev->pdev->dev),
+				     &resources, bcm_resource, dev);
+	if (ret < 0)
+		return ret;
+	acpi_dev_free_resource_list(&resources);
 
-	acpi_dev_get_resources(adev, &resources, bcm_resource, dev);
+	dmi_id = dmi_first_match(bcm_wrong_irq_dmi_table);
+	if (dmi_id) {
+		bt_dev_warn(dev, "%s: Overwriting IRQ polarity to active low",
+			    dmi_id->ident);
+		dev->irq_polarity = *(u8 *)dmi_id->driver_data;
+	}
 
 	return 0;
 }
@@ -480,7 +755,6 @@ static int bcm_acpi_probe(struct bcm_device *dev)
 static int bcm_probe(struct platform_device *pdev)
 {
 	struct bcm_device *dev;
-	struct acpi_device_id *pdata = pdev->dev.platform_data;
 	int ret;
 
 	dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
@@ -489,24 +763,18 @@ static int bcm_probe(struct platform_device *pdev)
 
 	dev->pdev = pdev;
 
-	if (ACPI_HANDLE(&pdev->dev)) {
-		ret = bcm_acpi_probe(dev);
-		if (ret)
-			return ret;
-	} else if (pdata) {
-		dev->name = pdata->id;
-	} else {
-		return -ENODEV;
-	}
+	ret = bcm_acpi_probe(dev);
+	if (ret)
+		return ret;
 
 	platform_set_drvdata(pdev, dev);
 
 	dev_info(&pdev->dev, "%s device registered.\n", dev->name);
 
 	/* Place this instance on the device list */
-	spin_lock(&bcm_device_lock);
+	mutex_lock(&bcm_device_lock);
 	list_add_tail(&dev->list, &bcm_device_list);
-	spin_unlock(&bcm_device_lock);
+	mutex_unlock(&bcm_device_lock);
 
 	bcm_gpio_set_power(dev, false);
 
@@ -517,9 +785,9 @@ static int bcm_remove(struct platform_device *pdev)
 {
 	struct bcm_device *dev = platform_get_drvdata(pdev);
 
-	spin_lock(&bcm_device_lock);
+	mutex_lock(&bcm_device_lock);
 	list_del(&dev->list);
-	spin_unlock(&bcm_device_lock);
+	mutex_unlock(&bcm_device_lock);
 
 	acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pdev->dev));
 
@@ -531,6 +799,7 @@ static int bcm_remove(struct platform_device *pdev)
 static const struct hci_uart_proto bcm_proto = {
 	.id		= HCI_UART_BCM,
 	.name		= "BCM",
+	.manufacturer	= 15,
 	.init_speed	= 115200,
 	.oper_speed	= 4000000,
 	.open		= bcm_open,
@@ -553,7 +822,10 @@ MODULE_DEVICE_TABLE(acpi, bcm_acpi_match);
 #endif
 
 /* Platform suspend and resume callbacks */
-static SIMPLE_DEV_PM_OPS(bcm_pm_ops, bcm_suspend, bcm_resume);
+static const struct dev_pm_ops bcm_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(bcm_suspend, bcm_resume)
+	SET_RUNTIME_PM_OPS(bcm_suspend_device, bcm_resume_device, NULL)
+};
 
 static struct platform_driver bcm_driver = {
 	.probe = bcm_probe,
diff --git a/drivers/bluetooth/hci_h4.c b/drivers/bluetooth/hci_h4.c
index eec3f28e4..a6fce48da 100644
--- a/drivers/bluetooth/hci_h4.c
+++ b/drivers/bluetooth/hci_h4.c
@@ -266,3 +266,4 @@ struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb,
 
 	return skb;
 }
+EXPORT_SYMBOL_GPL(h4_recv_buf);
diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c
index b35b238a0..abee2216f 100644
--- a/drivers/bluetooth/hci_h5.c
+++ b/drivers/bluetooth/hci_h5.c
@@ -128,7 +128,7 @@ static void h5_timed_event(unsigned long arg)
 {
 	const unsigned char sync_req[] = { 0x01, 0x7e };
 	unsigned char conf_req[] = { 0x03, 0xfc, 0x01 };
-	struct hci_uart *hu = (struct hci_uart *) arg;
+	struct hci_uart *hu = (struct hci_uart *)arg;
 	struct h5 *h5 = hu->priv;
 	struct sk_buff *skb;
 	unsigned long flags;
@@ -210,7 +210,7 @@ static int h5_open(struct hci_uart *hu)
 
 	init_timer(&h5->timer);
 	h5->timer.function = h5_timed_event;
-	h5->timer.data = (unsigned long) hu;
+	h5->timer.data = (unsigned long)hu;
 
 	h5->tx_win = H5_TX_WIN_MAX;
 
@@ -453,7 +453,7 @@ static int h5_rx_pkt_start(struct hci_uart *hu, unsigned char c)
 		return -ENOMEM;
 	}
 
-	h5->rx_skb->dev = (void *) hu->hdev;
+	h5->rx_skb->dev = (void *)hu->hdev;
 
 	return 0;
 }
@@ -696,7 +696,7 @@ static struct sk_buff *h5_dequeue(struct hci_uart *hu)
 	}
 
 	skb = skb_dequeue(&h5->unrel);
-	if (skb != NULL) {
+	if (skb) {
 		nskb = h5_prepare_pkt(hu, bt_cb(skb)->pkt_type,
 				      skb->data, skb->len);
 		if (nskb) {
@@ -714,7 +714,7 @@ static struct sk_buff *h5_dequeue(struct hci_uart *hu)
 		goto unlock;
 
 	skb = skb_dequeue(&h5->rel);
-	if (skb != NULL) {
+	if (skb) {
 		nskb = h5_prepare_pkt(hu, bt_cb(skb)->pkt_type,
 				      skb->data, skb->len);
 		if (nskb) {
diff --git a/drivers/bluetooth/hci_intel.c b/drivers/bluetooth/hci_intel.c
index 3a4e7c63f..20d079ea9 100644
--- a/drivers/bluetooth/hci_intel.c
+++ b/drivers/bluetooth/hci_intel.c
@@ -31,6 +31,8 @@
 #include <linux/platform_device.h>
 #include <linux/gpio/consumer.h>
 #include <linux/acpi.h>
+#include <linux/interrupt.h>
+#include <linux/pm_runtime.h>
 
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
@@ -43,19 +45,45 @@
 #define STATE_FIRMWARE_LOADED	2
 #define STATE_FIRMWARE_FAILED	3
 #define STATE_BOOTING		4
+#define STATE_LPM_ENABLED	5
+#define STATE_TX_ACTIVE		6
+#define STATE_SUSPENDED		7
+#define STATE_LPM_TRANSACTION	8
+
+#define HCI_LPM_WAKE_PKT 0xf0
+#define HCI_LPM_PKT 0xf1
+#define HCI_LPM_MAX_SIZE 10
+#define HCI_LPM_HDR_SIZE HCI_EVENT_HDR_SIZE
+
+#define LPM_OP_TX_NOTIFY 0x00
+#define LPM_OP_SUSPEND_ACK 0x02
+#define LPM_OP_RESUME_ACK 0x03
+
+#define LPM_SUSPEND_DELAY_MS 1000
+
+struct hci_lpm_pkt {
+	__u8 opcode;
+	__u8 dlen;
+	__u8 data[0];
+} __packed;
 
 struct intel_device {
 	struct list_head list;
 	struct platform_device *pdev;
 	struct gpio_desc *reset;
+	struct hci_uart *hu;
+	struct mutex hu_lock;
+	int irq;
 };
 
 static LIST_HEAD(intel_device_list);
-static DEFINE_SPINLOCK(intel_device_list_lock);
+static DEFINE_MUTEX(intel_device_list_lock);
 
 struct intel_data {
 	struct sk_buff *rx_skb;
 	struct sk_buff_head txq;
+	struct work_struct busy_work;
+	struct hci_uart *hu;
 	unsigned long flags;
 };
 
@@ -101,24 +129,185 @@ static int intel_wait_booting(struct hci_uart *hu)
 				  msecs_to_jiffies(1000));
 
 	if (err == 1) {
-		BT_ERR("%s: Device boot interrupted", hu->hdev->name);
+		bt_dev_err(hu->hdev, "Device boot interrupted");
 		return -EINTR;
 	}
 
 	if (err) {
-		BT_ERR("%s: Device boot timeout", hu->hdev->name);
+		bt_dev_err(hu->hdev, "Device boot timeout");
 		return -ETIMEDOUT;
 	}
 
 	return err;
 }
 
+#ifdef CONFIG_PM
+static int intel_wait_lpm_transaction(struct hci_uart *hu)
+{
+	struct intel_data *intel = hu->priv;
+	int err;
+
+	err = wait_on_bit_timeout(&intel->flags, STATE_LPM_TRANSACTION,
+				  TASK_INTERRUPTIBLE,
+				  msecs_to_jiffies(1000));
+
+	if (err == 1) {
+		bt_dev_err(hu->hdev, "LPM transaction interrupted");
+		return -EINTR;
+	}
+
+	if (err) {
+		bt_dev_err(hu->hdev, "LPM transaction timeout");
+		return -ETIMEDOUT;
+	}
+
+	return err;
+}
+
+static int intel_lpm_suspend(struct hci_uart *hu)
+{
+	static const u8 suspend[] = { 0x01, 0x01, 0x01 };
+	struct intel_data *intel = hu->priv;
+	struct sk_buff *skb;
+
+	if (!test_bit(STATE_LPM_ENABLED, &intel->flags) ||
+	    test_bit(STATE_SUSPENDED, &intel->flags))
+		return 0;
+
+	if (test_bit(STATE_TX_ACTIVE, &intel->flags))
+		return -EAGAIN;
+
+	bt_dev_dbg(hu->hdev, "Suspending");
+
+	skb = bt_skb_alloc(sizeof(suspend), GFP_KERNEL);
+	if (!skb) {
+		bt_dev_err(hu->hdev, "Failed to alloc memory for LPM packet");
+		return -ENOMEM;
+	}
+
+	memcpy(skb_put(skb, sizeof(suspend)), suspend, sizeof(suspend));
+	bt_cb(skb)->pkt_type = HCI_LPM_PKT;
+
+	set_bit(STATE_LPM_TRANSACTION, &intel->flags);
+
+	/* LPM flow is a priority, enqueue packet at list head */
+	skb_queue_head(&intel->txq, skb);
+	hci_uart_tx_wakeup(hu);
+
+	intel_wait_lpm_transaction(hu);
+	/* Even in case of failure, continue and test the suspended flag */
+
+	clear_bit(STATE_LPM_TRANSACTION, &intel->flags);
+
+	if (!test_bit(STATE_SUSPENDED, &intel->flags)) {
+		bt_dev_err(hu->hdev, "Device suspend error");
+		return -EINVAL;
+	}
+
+	bt_dev_dbg(hu->hdev, "Suspended");
+
+	hci_uart_set_flow_control(hu, true);
+
+	return 0;
+}
+
+static int intel_lpm_resume(struct hci_uart *hu)
+{
+	struct intel_data *intel = hu->priv;
+	struct sk_buff *skb;
+
+	if (!test_bit(STATE_LPM_ENABLED, &intel->flags) ||
+	    !test_bit(STATE_SUSPENDED, &intel->flags))
+		return 0;
+
+	bt_dev_dbg(hu->hdev, "Resuming");
+
+	hci_uart_set_flow_control(hu, false);
+
+	skb = bt_skb_alloc(0, GFP_KERNEL);
+	if (!skb) {
+		bt_dev_err(hu->hdev, "Failed to alloc memory for LPM packet");
+		return -ENOMEM;
+	}
+
+	bt_cb(skb)->pkt_type = HCI_LPM_WAKE_PKT;
+
+	set_bit(STATE_LPM_TRANSACTION, &intel->flags);
+
+	/* LPM flow is a priority, enqueue packet at list head */
+	skb_queue_head(&intel->txq, skb);
+	hci_uart_tx_wakeup(hu);
+
+	intel_wait_lpm_transaction(hu);
+	/* Even in case of failure, continue and test the suspended flag */
+
+	clear_bit(STATE_LPM_TRANSACTION, &intel->flags);
+
+	if (test_bit(STATE_SUSPENDED, &intel->flags)) {
+		bt_dev_err(hu->hdev, "Device resume error");
+		return -EINVAL;
+	}
+
+	bt_dev_dbg(hu->hdev, "Resumed");
+
+	return 0;
+}
+#endif /* CONFIG_PM */
+
+static int intel_lpm_host_wake(struct hci_uart *hu)
+{
+	static const u8 lpm_resume_ack[] = { LPM_OP_RESUME_ACK, 0x00 };
+	struct intel_data *intel = hu->priv;
+	struct sk_buff *skb;
+
+	hci_uart_set_flow_control(hu, false);
+
+	clear_bit(STATE_SUSPENDED, &intel->flags);
+
+	skb = bt_skb_alloc(sizeof(lpm_resume_ack), GFP_KERNEL);
+	if (!skb) {
+		bt_dev_err(hu->hdev, "Failed to alloc memory for LPM packet");
+		return -ENOMEM;
+	}
+
+	memcpy(skb_put(skb, sizeof(lpm_resume_ack)), lpm_resume_ack,
+	       sizeof(lpm_resume_ack));
+	bt_cb(skb)->pkt_type = HCI_LPM_PKT;
+
+	/* LPM flow is a priority, enqueue packet at list head */
+	skb_queue_head(&intel->txq, skb);
+	hci_uart_tx_wakeup(hu);
+
+	bt_dev_dbg(hu->hdev, "Resumed by controller");
+
+	return 0;
+}
+
+static irqreturn_t intel_irq(int irq, void *dev_id)
+{
+	struct intel_device *idev = dev_id;
+
+	dev_info(&idev->pdev->dev, "hci_intel irq\n");
+
+	mutex_lock(&idev->hu_lock);
+	if (idev->hu)
+		intel_lpm_host_wake(idev->hu);
+	mutex_unlock(&idev->hu_lock);
+
+	/* Host/Controller are now LPM resumed, trigger a new delayed suspend */
+	pm_runtime_get(&idev->pdev->dev);
+	pm_runtime_mark_last_busy(&idev->pdev->dev);
+	pm_runtime_put_autosuspend(&idev->pdev->dev);
+
+	return IRQ_HANDLED;
+}
+
 static int intel_set_power(struct hci_uart *hu, bool powered)
 {
 	struct list_head *p;
 	int err = -ENODEV;
 
-	spin_lock(&intel_device_list_lock);
+	mutex_lock(&intel_device_list_lock);
 
 	list_for_each(p, &intel_device_list) {
 		struct intel_device *idev = list_entry(p, struct intel_device,
@@ -139,13 +328,73 @@ static int intel_set_power(struct hci_uart *hu, bool powered)
 			hu, dev_name(&idev->pdev->dev), powered);
 
 		gpiod_set_value(idev->reset, powered);
+
+		/* Provide to idev a hu reference which is used to run LPM
+		 * transactions (lpm suspend/resume) from PM callbacks.
+		 * hu needs to be protected against concurrent removing during
+		 * these PM ops.
+		 */
+		mutex_lock(&idev->hu_lock);
+		idev->hu = powered ? hu : NULL;
+		mutex_unlock(&idev->hu_lock);
+
+		if (idev->irq < 0)
+			break;
+
+		if (powered && device_can_wakeup(&idev->pdev->dev)) {
+			err = devm_request_threaded_irq(&idev->pdev->dev,
+							idev->irq, NULL,
+							intel_irq,
+							IRQF_ONESHOT,
+							"bt-host-wake", idev);
+			if (err) {
+				BT_ERR("hu %p, unable to allocate irq-%d",
+				       hu, idev->irq);
+				break;
+			}
+
+			device_wakeup_enable(&idev->pdev->dev);
+
+			pm_runtime_set_active(&idev->pdev->dev);
+			pm_runtime_use_autosuspend(&idev->pdev->dev);
+			pm_runtime_set_autosuspend_delay(&idev->pdev->dev,
+							 LPM_SUSPEND_DELAY_MS);
+			pm_runtime_enable(&idev->pdev->dev);
+		} else if (!powered && device_may_wakeup(&idev->pdev->dev)) {
+			devm_free_irq(&idev->pdev->dev, idev->irq, idev);
+			device_wakeup_disable(&idev->pdev->dev);
+
+			pm_runtime_disable(&idev->pdev->dev);
+		}
 	}
 
-	spin_unlock(&intel_device_list_lock);
+	mutex_unlock(&intel_device_list_lock);
 
 	return err;
 }
 
+static void intel_busy_work(struct work_struct *work)
+{
+	struct list_head *p;
+	struct intel_data *intel = container_of(work, struct intel_data,
+						busy_work);
+
+	/* Link is busy, delay the suspend */
+	mutex_lock(&intel_device_list_lock);
+	list_for_each(p, &intel_device_list) {
+		struct intel_device *idev = list_entry(p, struct intel_device,
+						       list);
+
+		if (intel->hu->tty->dev->parent == idev->pdev->dev.parent) {
+			pm_runtime_get(&idev->pdev->dev);
+			pm_runtime_mark_last_busy(&idev->pdev->dev);
+			pm_runtime_put_autosuspend(&idev->pdev->dev);
+			break;
+		}
+	}
+	mutex_unlock(&intel_device_list_lock);
+}
+
 static int intel_open(struct hci_uart *hu)
 {
 	struct intel_data *intel;
@@ -157,6 +406,9 @@ static int intel_open(struct hci_uart *hu)
 		return -ENOMEM;
 
 	skb_queue_head_init(&intel->txq);
+	INIT_WORK(&intel->busy_work, intel_busy_work);
+
+	intel->hu = hu;
 
 	hu->priv = intel;
 
@@ -172,6 +424,8 @@ static int intel_close(struct hci_uart *hu)
 
 	BT_DBG("hu %p", hu);
 
+	cancel_work_sync(&intel->busy_work);
+
 	intel_set_power(hu, false);
 
 	skb_queue_purge(&intel->txq);
@@ -237,11 +491,11 @@ static int intel_set_baudrate(struct hci_uart *hu, unsigned int speed)
 	if (err && err != ETIMEDOUT)
 		return err;
 
-	BT_INFO("%s: Change controller speed to %d", hdev->name, speed);
+	bt_dev_info(hdev, "Change controller speed to %d", speed);
 
 	speed_cmd[3] = intel_convert_speed(speed);
 	if (speed_cmd[3] == 0xff) {
-		BT_ERR("%s: Unsupported speed", hdev->name);
+		bt_dev_err(hdev, "Unsupported speed");
 		return -EINVAL;
 	}
 
@@ -250,16 +504,15 @@ static int intel_set_baudrate(struct hci_uart *hu, unsigned int speed)
 	 */
 	skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
 	if (IS_ERR(skb)) {
-		BT_ERR("%s: Reading Intel version information failed (%ld)",
-		       hdev->name, PTR_ERR(skb));
+		bt_dev_err(hdev, "Reading Intel version information failed (%ld)",
+			   PTR_ERR(skb));
 		return PTR_ERR(skb);
 	}
 	kfree_skb(skb);
 
 	skb = bt_skb_alloc(sizeof(speed_cmd), GFP_KERNEL);
 	if (!skb) {
-		BT_ERR("%s: Failed to allocate memory for baudrate packet",
-		       hdev->name);
+		bt_dev_err(hdev, "Failed to alloc memory for baudrate packet");
 		return -ENOMEM;
 	}
 
@@ -284,11 +537,14 @@ static int intel_setup(struct hci_uart *hu)
 {
 	static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
 					  0x00, 0x08, 0x04, 0x00 };
+	static const u8 lpm_param[] = { 0x03, 0x07, 0x01, 0x0b };
 	struct intel_data *intel = hu->priv;
+	struct intel_device *idev = NULL;
 	struct hci_dev *hdev = hu->hdev;
 	struct sk_buff *skb;
 	struct intel_version *ver;
 	struct intel_boot_params *params;
+	struct list_head *p;
 	const struct firmware *fw;
 	const u8 *fw_ptr;
 	char fwname[64];
@@ -299,8 +555,9 @@ static int intel_setup(struct hci_uart *hu)
 	int speed_change = 0;
 	int err;
 
-	BT_DBG("%s", hdev->name);
+	bt_dev_dbg(hdev, "start intel_setup");
 
+	hu->hdev->set_diag = btintel_set_diag;
 	hu->hdev->set_bdaddr = btintel_set_bdaddr;
 
 	calltime = ktime_get();
@@ -335,21 +592,21 @@ static int intel_setup(struct hci_uart *hu)
 	 */
 	skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
 	if (IS_ERR(skb)) {
-		BT_ERR("%s: Reading Intel version information failed (%ld)",
-		       hdev->name, PTR_ERR(skb));
+		bt_dev_err(hdev, "Reading Intel version information failed (%ld)",
+			   PTR_ERR(skb));
 		return PTR_ERR(skb);
 	}
 
 	if (skb->len != sizeof(*ver)) {
-		BT_ERR("%s: Intel version event size mismatch", hdev->name);
+		bt_dev_err(hdev, "Intel version event size mismatch");
 		kfree_skb(skb);
 		return -EILSEQ;
 	}
 
 	ver = (struct intel_version *)skb->data;
 	if (ver->status) {
-		BT_ERR("%s: Intel version command failure (%02x)",
-		       hdev->name, ver->status);
+		bt_dev_err(hdev, "Intel version command failure (%02x)",
+			   ver->status);
 		err = -bt_to_errno(ver->status);
 		kfree_skb(skb);
 		return err;
@@ -359,8 +616,8 @@ static int intel_setup(struct hci_uart *hu)
 	 * for now only accept this single value.
 	 */
 	if (ver->hw_platform != 0x37) {
-		BT_ERR("%s: Unsupported Intel hardware platform (%u)",
-		       hdev->name, ver->hw_platform);
+		bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
+			   ver->hw_platform);
 		kfree_skb(skb);
 		return -EINVAL;
 	}
@@ -371,8 +628,8 @@ static int intel_setup(struct hci_uart *hu)
 	 * when newer hardware variants come along.
 	 */
 	if (ver->hw_variant != 0x0b) {
-		BT_ERR("%s: Unsupported Intel hardware variant (%u)",
-		       hdev->name, ver->hw_variant);
+		bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
+			   ver->hw_variant);
 		kfree_skb(skb);
 		return -EINVAL;
 	}
@@ -403,8 +660,8 @@ static int intel_setup(struct hci_uart *hu)
 	 * choice is to return an error and abort the device initialization.
 	 */
 	if (ver->fw_variant != 0x06) {
-		BT_ERR("%s: Unsupported Intel firmware variant (%u)",
-		       hdev->name, ver->fw_variant);
+		bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
+			   ver->fw_variant);
 		kfree_skb(skb);
 		return -ENODEV;
 	}
@@ -416,33 +673,33 @@ static int intel_setup(struct hci_uart *hu)
 	 */
 	skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
 	if (IS_ERR(skb)) {
-		BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
-		       hdev->name, PTR_ERR(skb));
+		bt_dev_err(hdev, "Reading Intel boot parameters failed (%ld)",
+			   PTR_ERR(skb));
 		return PTR_ERR(skb);
 	}
 
 	if (skb->len != sizeof(*params)) {
-		BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
+		bt_dev_err(hdev, "Intel boot parameters size mismatch");
 		kfree_skb(skb);
 		return -EILSEQ;
 	}
 
 	params = (struct intel_boot_params *)skb->data;
 	if (params->status) {
-		BT_ERR("%s: Intel boot parameters command failure (%02x)",
-		       hdev->name, params->status);
+		bt_dev_err(hdev, "Intel boot parameters command failure (%02x)",
+			   params->status);
 		err = -bt_to_errno(params->status);
 		kfree_skb(skb);
 		return err;
 	}
 
-	BT_INFO("%s: Device revision is %u", hdev->name,
-		le16_to_cpu(params->dev_revid));
+	bt_dev_info(hdev, "Device revision is %u",
+		    le16_to_cpu(params->dev_revid));
 
-	BT_INFO("%s: Secure boot is %s", hdev->name,
-		params->secure_boot ? "enabled" : "disabled");
+	bt_dev_info(hdev, "Secure boot is %s",
+		    params->secure_boot ? "enabled" : "disabled");
 
-	BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
+	bt_dev_info(hdev, "Minimum firmware build %u week %u %u",
 		params->min_fw_build_nn, params->min_fw_build_cw,
 		2000 + params->min_fw_build_yy);
 
@@ -451,8 +708,8 @@ static int intel_setup(struct hci_uart *hu)
 	 * that this bootloader does not send them, then abort the setup.
 	 */
 	if (params->limited_cce != 0x00) {
-		BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
-		       hdev->name, params->limited_cce);
+		bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
+			   params->limited_cce);
 		kfree_skb(skb);
 		return -EINVAL;
 	}
@@ -461,7 +718,7 @@ static int intel_setup(struct hci_uart *hu)
 	 * also be no valid address for the operational firmware.
 	 */
 	if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
-		BT_INFO("%s: No device address configured", hdev->name);
+		bt_dev_info(hdev, "No device address configured");
 		set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
 	}
 
@@ -476,19 +733,23 @@ static int intel_setup(struct hci_uart *hu)
 
 	err = reject_firmware(&fw, fwname, &hdev->dev);
 	if (err < 0) {
-		BT_ERR("%s: Failed to load Intel firmware file (%d)",
-		       hdev->name, err);
+		bt_dev_err(hdev, "Failed to load Intel firmware file (%d)",
+			   err);
 		kfree_skb(skb);
 		return err;
 	}
 
-	BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
+	bt_dev_info(hdev, "Found device firmware: %s", fwname);
+
+	/* Save the DDC file name for later */
+	snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc",
+		 le16_to_cpu(params->dev_revid));
 
 	kfree_skb(skb);
 
 	if (fw->size < 644) {
-		BT_ERR("%s: Invalid size of firmware file (%zu)",
-		       hdev->name, fw->size);
+		bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
+			   fw->size);
 		err = -EBADF;
 		goto done;
 	}
@@ -500,8 +761,7 @@ static int intel_setup(struct hci_uart *hu)
 	 */
 	err = btintel_secure_send(hdev, 0x00, 128, fw->data);
 	if (err < 0) {
-		BT_ERR("%s: Failed to send firmware header (%d)",
-		       hdev->name, err);
+		bt_dev_err(hdev, "Failed to send firmware header (%d)", err);
 		goto done;
 	}
 
@@ -510,8 +770,8 @@ static int intel_setup(struct hci_uart *hu)
 	 */
 	err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
 	if (err < 0) {
-		BT_ERR("%s: Failed to send firmware public key (%d)",
-		       hdev->name, err);
+		bt_dev_err(hdev, "Failed to send firmware public key (%d)",
+			   err);
 		goto done;
 	}
 
@@ -520,8 +780,8 @@ static int intel_setup(struct hci_uart *hu)
 	 */
 	err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
 	if (err < 0) {
-		BT_ERR("%s: Failed to send firmware signature (%d)",
-		       hdev->name, err);
+		bt_dev_err(hdev, "Failed to send firmware signature (%d)",
+			   err);
 		goto done;
 	}
 
@@ -533,8 +793,8 @@ static int intel_setup(struct hci_uart *hu)
 
 		frag_len += sizeof(*cmd) + cmd->plen;
 
-		BT_DBG("%s: patching %td/%zu", hdev->name,
-		       (fw_ptr - fw->data), fw->size);
+		bt_dev_dbg(hdev, "Patching %td/%zu", (fw_ptr - fw->data),
+			   fw->size);
 
 		/* The parameter length of the secure send command requires
 		 * a 4 byte alignment. It happens so that the firmware file
@@ -552,8 +812,8 @@ static int intel_setup(struct hci_uart *hu)
 		 */
 		err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
 		if (err < 0) {
-			BT_ERR("%s: Failed to send firmware data (%d)",
-			       hdev->name, err);
+			bt_dev_err(hdev, "Failed to send firmware data (%d)",
+				   err);
 			goto done;
 		}
 
@@ -563,7 +823,7 @@ static int intel_setup(struct hci_uart *hu)
 
 	set_bit(STATE_FIRMWARE_LOADED, &intel->flags);
 
-	BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
+	bt_dev_info(hdev, "Waiting for firmware download to complete");
 
 	/* Before switching the device into operational mode and with that
 	 * booting the loaded firmware, wait for the bootloader notification
@@ -580,19 +840,19 @@ static int intel_setup(struct hci_uart *hu)
 				  TASK_INTERRUPTIBLE,
 				  msecs_to_jiffies(5000));
 	if (err == 1) {
-		BT_ERR("%s: Firmware loading interrupted", hdev->name);
+		bt_dev_err(hdev, "Firmware loading interrupted");
 		err = -EINTR;
 		goto done;
 	}
 
 	if (err) {
-		BT_ERR("%s: Firmware loading timeout", hdev->name);
+		bt_dev_err(hdev, "Firmware loading timeout");
 		err = -ETIMEDOUT;
 		goto done;
 	}
 
 	if (test_bit(STATE_FIRMWARE_FAILED, &intel->flags)) {
-		BT_ERR("%s: Firmware loading failed", hdev->name);
+		bt_dev_err(hdev, "Firmware loading failed");
 		err = -ENOEXEC;
 		goto done;
 	}
@@ -601,7 +861,7 @@ static int intel_setup(struct hci_uart *hu)
 	delta = ktime_sub(rettime, calltime);
 	duration = (unsigned long long) ktime_to_ns(delta) >> 10;
 
-	BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
+	bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
 
 done:
 	release_firmware(fw);
@@ -634,7 +894,7 @@ done:
 	 * 1 second. However if that happens, then just fail the setup
 	 * since something went wrong.
 	 */
-	BT_INFO("%s: Waiting for device to boot", hdev->name);
+	bt_dev_info(hdev, "Waiting for device to boot");
 
 	err = intel_wait_booting(hu);
 	if (err)
@@ -646,7 +906,39 @@ done:
 	delta = ktime_sub(rettime, calltime);
 	duration = (unsigned long long) ktime_to_ns(delta) >> 10;
 
-	BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
+	bt_dev_info(hdev, "Device booted in %llu usecs", duration);
+
+	/* Enable LPM if matching pdev with wakeup enabled */
+	mutex_lock(&intel_device_list_lock);
+	list_for_each(p, &intel_device_list) {
+		struct intel_device *dev = list_entry(p, struct intel_device,
+						      list);
+		if (hu->tty->dev->parent == dev->pdev->dev.parent) {
+			if (device_may_wakeup(&dev->pdev->dev))
+				idev = dev;
+			break;
+		}
+	}
+	mutex_unlock(&intel_device_list_lock);
+
+	if (!idev)
+		goto no_lpm;
+
+	bt_dev_info(hdev, "Enabling LPM");
+
+	skb = __hci_cmd_sync(hdev, 0xfc8b, sizeof(lpm_param), lpm_param,
+			     HCI_CMD_TIMEOUT);
+	if (IS_ERR(skb)) {
+		bt_dev_err(hdev, "Failed to enable LPM");
+		goto no_lpm;
+	}
+	kfree_skb(skb);
+
+	set_bit(STATE_LPM_ENABLED, &intel->flags);
+
+no_lpm:
+	/* Ignore errors, device can work without DDC parameters */
+	btintel_load_ddc_config(hdev, fwname);
 
 	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_CMD_TIMEOUT);
 	if (IS_ERR(skb))
@@ -659,7 +951,7 @@ done:
 			return err;
 	}
 
-	BT_INFO("%s: Setup complete", hdev->name);
+	bt_dev_info(hdev, "Setup complete");
 
 	clear_bit(STATE_BOOTLOADER, &intel->flags);
 
@@ -708,10 +1000,71 @@ recv:
 	return hci_recv_frame(hdev, skb);
 }
 
+static void intel_recv_lpm_notify(struct hci_dev *hdev, int value)
+{
+	struct hci_uart *hu = hci_get_drvdata(hdev);
+	struct intel_data *intel = hu->priv;
+
+	bt_dev_dbg(hdev, "TX idle notification (%d)", value);
+
+	if (value) {
+		set_bit(STATE_TX_ACTIVE, &intel->flags);
+		schedule_work(&intel->busy_work);
+	} else {
+		clear_bit(STATE_TX_ACTIVE, &intel->flags);
+	}
+}
+
+static int intel_recv_lpm(struct hci_dev *hdev, struct sk_buff *skb)
+{
+	struct hci_lpm_pkt *lpm = (void *)skb->data;
+	struct hci_uart *hu = hci_get_drvdata(hdev);
+	struct intel_data *intel = hu->priv;
+
+	switch (lpm->opcode) {
+	case LPM_OP_TX_NOTIFY:
+		if (lpm->dlen < 1) {
+			bt_dev_err(hu->hdev, "Invalid LPM notification packet");
+			break;
+		}
+		intel_recv_lpm_notify(hdev, lpm->data[0]);
+		break;
+	case LPM_OP_SUSPEND_ACK:
+		set_bit(STATE_SUSPENDED, &intel->flags);
+		if (test_and_clear_bit(STATE_LPM_TRANSACTION, &intel->flags)) {
+			smp_mb__after_atomic();
+			wake_up_bit(&intel->flags, STATE_LPM_TRANSACTION);
+		}
+		break;
+	case LPM_OP_RESUME_ACK:
+		clear_bit(STATE_SUSPENDED, &intel->flags);
+		if (test_and_clear_bit(STATE_LPM_TRANSACTION, &intel->flags)) {
+			smp_mb__after_atomic();
+			wake_up_bit(&intel->flags, STATE_LPM_TRANSACTION);
+		}
+		break;
+	default:
+		bt_dev_err(hdev, "Unknown LPM opcode (%02x)", lpm->opcode);
+		break;
+	}
+
+	kfree_skb(skb);
+
+	return 0;
+}
+
+#define INTEL_RECV_LPM \
+	.type = HCI_LPM_PKT, \
+	.hlen = HCI_LPM_HDR_SIZE, \
+	.loff = 1, \
+	.lsize = 1, \
+	.maxlen = HCI_LPM_MAX_SIZE
+
 static const struct h4_recv_pkt intel_recv_pkts[] = {
-	{ H4_RECV_ACL,   .recv = hci_recv_frame },
-	{ H4_RECV_SCO,   .recv = hci_recv_frame },
-	{ H4_RECV_EVENT, .recv = intel_recv_event },
+	{ H4_RECV_ACL,    .recv = hci_recv_frame   },
+	{ H4_RECV_SCO,    .recv = hci_recv_frame   },
+	{ H4_RECV_EVENT,  .recv = intel_recv_event },
+	{ INTEL_RECV_LPM, .recv = intel_recv_lpm   },
 };
 
 static int intel_recv(struct hci_uart *hu, const void *data, int count)
@@ -726,7 +1079,7 @@ static int intel_recv(struct hci_uart *hu, const void *data, int count)
 				    ARRAY_SIZE(intel_recv_pkts));
 	if (IS_ERR(intel->rx_skb)) {
 		int err = PTR_ERR(intel->rx_skb);
-		BT_ERR("%s: Frame reassembly failed (%d)", hu->hdev->name, err);
+		bt_dev_err(hu->hdev, "Frame reassembly failed (%d)", err);
 		intel->rx_skb = NULL;
 		return err;
 	}
@@ -737,9 +1090,27 @@ static int intel_recv(struct hci_uart *hu, const void *data, int count)
 static int intel_enqueue(struct hci_uart *hu, struct sk_buff *skb)
 {
 	struct intel_data *intel = hu->priv;
+	struct list_head *p;
 
 	BT_DBG("hu %p skb %p", hu, skb);
 
+	/* Be sure our controller is resumed and potential LPM transaction
+	 * completed before enqueuing any packet.
+	 */
+	mutex_lock(&intel_device_list_lock);
+	list_for_each(p, &intel_device_list) {
+		struct intel_device *idev = list_entry(p, struct intel_device,
+						       list);
+
+		if (hu->tty->dev->parent == idev->pdev->dev.parent) {
+			pm_runtime_get_sync(&idev->pdev->dev);
+			pm_runtime_mark_last_busy(&idev->pdev->dev);
+			pm_runtime_put_autosuspend(&idev->pdev->dev);
+			break;
+		}
+	}
+	mutex_unlock(&intel_device_list_lock);
+
 	skb_queue_tail(&intel->txq, skb);
 
 	return 0;
@@ -777,6 +1148,7 @@ static struct sk_buff *intel_dequeue(struct hci_uart *hu)
 static const struct hci_uart_proto intel_proto = {
 	.id		= HCI_UART_INTEL,
 	.name		= "Intel",
+	.manufacturer	= 2,
 	.init_speed	= 115200,
 	.oper_speed	= 3000000,
 	.open		= intel_open,
@@ -795,24 +1167,61 @@ static const struct acpi_device_id intel_acpi_match[] = {
 	{ },
 };
 MODULE_DEVICE_TABLE(acpi, intel_acpi_match);
+#endif
 
-static int intel_acpi_probe(struct intel_device *idev)
+#ifdef CONFIG_PM
+static int intel_suspend_device(struct device *dev)
 {
-	const struct acpi_device_id *id;
+	struct intel_device *idev = dev_get_drvdata(dev);
 
-	id = acpi_match_device(intel_acpi_match, &idev->pdev->dev);
-	if (!id)
-		return -ENODEV;
+	mutex_lock(&idev->hu_lock);
+	if (idev->hu)
+		intel_lpm_suspend(idev->hu);
+	mutex_unlock(&idev->hu_lock);
 
 	return 0;
 }
-#else
-static int intel_acpi_probe(struct intel_device *idev)
+
+static int intel_resume_device(struct device *dev)
+{
+	struct intel_device *idev = dev_get_drvdata(dev);
+
+	mutex_lock(&idev->hu_lock);
+	if (idev->hu)
+		intel_lpm_resume(idev->hu);
+	mutex_unlock(&idev->hu_lock);
+
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_PM_SLEEP
+static int intel_suspend(struct device *dev)
+{
+	struct intel_device *idev = dev_get_drvdata(dev);
+
+	if (device_may_wakeup(dev))
+		enable_irq_wake(idev->irq);
+
+	return intel_suspend_device(dev);
+}
+
+static int intel_resume(struct device *dev)
 {
-	return -ENODEV;
+	struct intel_device *idev = dev_get_drvdata(dev);
+
+	if (device_may_wakeup(dev))
+		disable_irq_wake(idev->irq);
+
+	return intel_resume_device(dev);
 }
 #endif
 
+static const struct dev_pm_ops intel_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(intel_suspend, intel_resume)
+	SET_RUNTIME_PM_OPS(intel_suspend_device, intel_resume_device, NULL)
+};
+
 static int intel_probe(struct platform_device *pdev)
 {
 	struct intel_device *idev;
@@ -821,15 +1230,9 @@ static int intel_probe(struct platform_device *pdev)
 	if (!idev)
 		return -ENOMEM;
 
-	idev->pdev = pdev;
+	mutex_init(&idev->hu_lock);
 
-	if (ACPI_HANDLE(&pdev->dev)) {
-		int err = intel_acpi_probe(idev);
-		if (err)
-			return err;
-	} else {
-		return -ENODEV;
-	}
+	idev->pdev = pdev;
 
 	idev->reset = devm_gpiod_get_optional(&pdev->dev, "reset",
 					      GPIOD_OUT_LOW);
@@ -838,14 +1241,40 @@ static int intel_probe(struct platform_device *pdev)
 		return PTR_ERR(idev->reset);
 	}
 
+	idev->irq = platform_get_irq(pdev, 0);
+	if (idev->irq < 0) {
+		struct gpio_desc *host_wake;
+
+		dev_err(&pdev->dev, "No IRQ, falling back to gpio-irq\n");
+
+		host_wake = devm_gpiod_get_optional(&pdev->dev, "host-wake",
+						    GPIOD_IN);
+		if (IS_ERR(host_wake)) {
+			dev_err(&pdev->dev, "Unable to retrieve IRQ\n");
+			goto no_irq;
+		}
+
+		idev->irq = gpiod_to_irq(host_wake);
+		if (idev->irq < 0) {
+			dev_err(&pdev->dev, "No corresponding irq for gpio\n");
+			goto no_irq;
+		}
+	}
+
+	/* Only enable wake-up/irq when controller is powered */
+	device_set_wakeup_capable(&pdev->dev, true);
+	device_wakeup_disable(&pdev->dev);
+
+no_irq:
 	platform_set_drvdata(pdev, idev);
 
 	/* Place this instance on the device list */
-	spin_lock(&intel_device_list_lock);
+	mutex_lock(&intel_device_list_lock);
 	list_add_tail(&idev->list, &intel_device_list);
-	spin_unlock(&intel_device_list_lock);
+	mutex_unlock(&intel_device_list_lock);
 
-	dev_info(&pdev->dev, "registered.\n");
+	dev_info(&pdev->dev, "registered, gpio(%d)/irq(%d).\n",
+		 desc_to_gpio(idev->reset), idev->irq);
 
 	return 0;
 }
@@ -854,9 +1283,11 @@ static int intel_remove(struct platform_device *pdev)
 {
 	struct intel_device *idev = platform_get_drvdata(pdev);
 
-	spin_lock(&intel_device_list_lock);
+	device_wakeup_disable(&pdev->dev);
+
+	mutex_lock(&intel_device_list_lock);
 	list_del(&idev->list);
-	spin_unlock(&intel_device_list_lock);
+	mutex_unlock(&intel_device_list_lock);
 
 	dev_info(&pdev->dev, "unregistered.\n");
 
@@ -869,6 +1300,7 @@ static struct platform_driver intel_driver = {
 	.driver = {
 		.name = "hci_intel",
 		.acpi_match_table = ACPI_PTR(intel_acpi_match),
+		.pm = &intel_pm_ops,
 	},
 };
 
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
index 0d5a05a7c..96bcec559 100644
--- a/drivers/bluetooth/hci_ldisc.c
+++ b/drivers/bluetooth/hci_ldisc.c
@@ -208,9 +208,6 @@ static int hci_uart_open(struct hci_dev *hdev)
 	BT_DBG("%s %p", hdev->name, hdev);
 
 	/* Nothing to do for UART driver */
-
-	set_bit(HCI_RUNNING, &hdev->flags);
-
 	return 0;
 }
 
@@ -241,9 +238,6 @@ static int hci_uart_close(struct hci_dev *hdev)
 {
 	BT_DBG("hdev %p", hdev);
 
-	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
-		return 0;
-
 	hci_uart_flush(hdev);
 	hdev->flush = NULL;
 	return 0;
@@ -254,9 +248,6 @@ static int hci_uart_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 {
 	struct hci_uart *hu = hci_get_drvdata(hdev);
 
-	if (!test_bit(HCI_RUNNING, &hdev->flags))
-		return -EBUSY;
-
 	BT_DBG("%s: type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len);
 
 	hu->proto->enqueue(hu, skb);
@@ -470,8 +461,6 @@ static int hci_uart_tty_open(struct tty_struct *tty)
 	INIT_WORK(&hu->init_ready, hci_uart_init_work);
 	INIT_WORK(&hu->write_work, hci_uart_write_work);
 
-	spin_lock_init(&hu->rx_lock);
-
 	/* Flush any pending characters in the driver and line discipline. */
 
 	/* FIXME: why is this needed. Note don't use ldisc_ref here as the
@@ -569,14 +558,14 @@ static void hci_uart_tty_receive(struct tty_struct *tty, const u8 *data,
 	if (!test_bit(HCI_UART_PROTO_SET, &hu->flags))
 		return;
 
-	spin_lock(&hu->rx_lock);
+	/* It does not need a lock here as it is already protected by a mutex in
+	 * tty caller
+	 */
 	hu->proto->recv(hu, data, count);
 
 	if (hu->hdev)
 		hu->hdev->stat.byte_rx += count;
 
-	spin_unlock(&hu->rx_lock);
-
 	tty_unthrottle(tty);
 }
 
@@ -598,6 +587,13 @@ static int hci_uart_register_dev(struct hci_uart *hu)
 	hdev->bus = HCI_UART;
 	hci_set_drvdata(hdev, hu);
 
+	/* Only when vendor specific setup callback is provided, consider
+	 * the manufacturer information valid. This avoids filling in the
+	 * value for Ericsson when nothing is specified.
+	 */
+	if (hu->proto->setup)
+		hdev->manufacturer = hu->proto->manufacturer;
+
 	hdev->open  = hci_uart_open;
 	hdev->close = hci_uart_close;
 	hdev->flush = hci_uart_flush;
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index 6b9b91267..71325e443 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -41,13 +41,13 @@
 #define HCI_IBS_SLEEP_IND	0xFE
 #define HCI_IBS_WAKE_IND	0xFD
 #define HCI_IBS_WAKE_ACK	0xFC
-#define HCI_MAX_IBS_SIZE 	10
+#define HCI_MAX_IBS_SIZE	10
 
 /* Controller states */
 #define STATE_IN_BAND_SLEEP_ENABLED	1
 
-#define IBS_WAKE_RETRANS_TIMEOUT_MS 	100
-#define IBS_TX_IDLE_TIMEOUT_MS 		2000
+#define IBS_WAKE_RETRANS_TIMEOUT_MS	100
+#define IBS_TX_IDLE_TIMEOUT_MS		2000
 #define BAUDRATE_SETTLE_TIMEOUT_MS	300
 
 /* HCI_IBS transmit side sleep protocol states */
@@ -80,8 +80,8 @@ struct qca_data {
 	spinlock_t hci_ibs_lock;	/* HCI_IBS state lock	*/
 	u8 tx_ibs_state;	/* HCI_IBS transmit side power state*/
 	u8 rx_ibs_state;	/* HCI_IBS receive side power state */
-	u32 tx_vote;		/* Clock must be on for TX */
-	u32 rx_vote;		/* Clock must be on for RX */
+	bool tx_vote;		/* Clock must be on for TX */
+	bool rx_vote;		/* Clock must be on for RX */
 	struct timer_list tx_idle_timer;
 	u32 tx_idle_delay;
 	struct timer_list wake_retrans_timer;
@@ -181,8 +181,8 @@ static void serial_clock_vote(unsigned long vote, struct hci_uart *hu)
 		else
 			__serial_clock_off(hu->tty);
 
-		BT_DBG("Vote serial clock %s(%s)", new_vote? "true" : "false",
-		       vote? "true" : "false");
+		BT_DBG("Vote serial clock %s(%s)", new_vote ? "true" : "false",
+		       vote ? "true" : "false");
 
 		diff = jiffies_to_msecs(jiffies - qca->vote_last_jif);
 
@@ -347,7 +347,7 @@ static void hci_ibs_wake_retrans_timeout(unsigned long arg)
 	struct hci_uart *hu = (struct hci_uart *)arg;
 	struct qca_data *qca = hu->priv;
 	unsigned long flags, retrans_delay;
-	unsigned long retransmit = 0;
+	bool retransmit = false;
 
 	BT_DBG("hu %p wake retransmit timeout in %d state",
 		hu, qca->tx_ibs_state);
@@ -358,7 +358,7 @@ static void hci_ibs_wake_retrans_timeout(unsigned long arg)
 	switch (qca->tx_ibs_state) {
 	case HCI_IBS_TX_WAKING:
 		/* No WAKE_ACK, retransmit WAKE */
-		retransmit = 1;
+		retransmit = true;
 		if (send_hci_ibs_cmd(HCI_IBS_WAKE_IND, hu) < 0) {
 			BT_ERR("Failed to acknowledge device wake up");
 			break;
@@ -821,7 +821,7 @@ static struct sk_buff *qca_dequeue(struct hci_uart *hu)
 
 static uint8_t qca_get_baudrate_value(int speed)
 {
-	switch(speed) {
+	switch (speed) {
 	case 9600:
 		return QCA_BAUDRATE_9600;
 	case 19200:
@@ -947,6 +947,7 @@ static int qca_setup(struct hci_uart *hu)
 static struct hci_uart_proto qca_proto = {
 	.id		= HCI_UART_QCA,
 	.name		= "QCA",
+	.manufacturer	= 29,
 	.init_speed	= 115200,
 	.oper_speed	= 3000000,
 	.open		= qca_open,
diff --git a/drivers/bluetooth/hci_uart.h b/drivers/bluetooth/hci_uart.h
index 495b9ef52..82c92f1b6 100644
--- a/drivers/bluetooth/hci_uart.h
+++ b/drivers/bluetooth/hci_uart.h
@@ -59,6 +59,7 @@ struct hci_uart;
 struct hci_uart_proto {
 	unsigned int id;
 	const char *name;
+	unsigned int manufacturer;
 	unsigned int init_speed;
 	unsigned int oper_speed;
 	int (*open)(struct hci_uart *hu);
@@ -85,7 +86,6 @@ struct hci_uart {
 
 	struct sk_buff		*tx_skb;
 	unsigned long		tx_state;
-	spinlock_t		rx_lock;
 
 	unsigned int init_speed;
 	unsigned int oper_speed;
diff --git a/drivers/bluetooth/hci_vhci.c b/drivers/bluetooth/hci_vhci.c
index 78653db2e..ed888e302 100644
--- a/drivers/bluetooth/hci_vhci.c
+++ b/drivers/bluetooth/hci_vhci.c
@@ -55,8 +55,6 @@ struct vhci_data {
 
 static int vhci_open_dev(struct hci_dev *hdev)
 {
-	set_bit(HCI_RUNNING, &hdev->flags);
-
 	return 0;
 }
 
@@ -64,9 +62,6 @@ static int vhci_close_dev(struct hci_dev *hdev)
 {
 	struct vhci_data *data = hci_get_drvdata(hdev);
 
-	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
-		return 0;
-
 	skb_queue_purge(&data->readq);
 
 	return 0;
@@ -85,9 +80,6 @@ static int vhci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 {
 	struct vhci_data *data = hci_get_drvdata(hdev);
 
-	if (!test_bit(HCI_RUNNING, &hdev->flags))
-		return -EBUSY;
-
 	memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
 	skb_queue_tail(&data->readq, skb);