23 files changed, 577 insertions, 328 deletions

diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig
index 0bd88c942a52..c9c5dd0bad36 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
@@ -183,6 +184,7 @@ config BT_HCIBCM203X
 config BT_HCIBPA10X
 	tristate "HCI BPA10x USB driver"
 	depends on USB
+	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 a5c4d0584389..616ec2ac1b22 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 35e63aaa6f80..36fa1c958c74 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 8a319913c9a9..49c397e21b39 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 772a2770710c..5803aaed958f 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;
diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c
index 02ed816a18f9..2fc363a0393d 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;
@@ -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:
@@ -464,6 +493,14 @@ int btbcm_setup_patchram(struct hci_dev *hdev)
 		hw_name ? : "BCM", (subver & 0x7000) >> 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 +512,25 @@ 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 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 9e18988375eb..7047fe6a6a2b 100644
--- a/drivers/bluetooth/btintel.c
+++ b/drivers/bluetooth/btintel.c
@@ -23,6 +23,7 @@
 
 #include <linux/module.h>
 #include <linux/firmware.h>
+#include <linux/regmap.h>
 
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
@@ -215,6 +216,201 @@ int btintel_load_ddc_config(struct hci_dev *hdev, const char *ddc_name)
 }
 EXPORT_SYMBOL_GPL(btintel_load_ddc_config);
 
+/* ------- 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 52deaf2817cf..f0655c476fd2 100644
--- a/drivers/bluetooth/btintel.h
+++ b/drivers/bluetooth/btintel.h
@@ -80,6 +80,9 @@ 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);
 
+struct regmap *btintel_regmap_init(struct hci_dev *hdev, u16 opcode_read,
+				   u16 opcode_write);
+
 #else
 
 static inline int btintel_check_bdaddr(struct hci_dev *hdev)
@@ -113,4 +116,10 @@ static inline int btintel_load_ddc_config(struct hci_dev *hdev,
 	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 bc110f61c8b1..6ba22862d788 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;
 	}
@@ -436,13 +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++;
@@ -477,9 +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;
@@ -487,8 +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;
 }
 
diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c
index b9978a7ba0cc..71ea2a3af293 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		= "mrvl/sd8688_helper.bin",
 	.firmware	= "mrvl/sd8688.bin",
@@ -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       = "mrvl/sd8997_uapsta.bin",
+	.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;
 		}
 
@@ -1616,3 +1657,4 @@ MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
 MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");
 MODULE_FIRMWARE("mrvl/sd8887_uapsta.bin");
 MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin");
+MODULE_FIRMWARE("mrvl/sd8997_uapsta.bin");
diff --git a/drivers/bluetooth/btsdio.c b/drivers/bluetooth/btsdio.c
index 83f6437dd91d..7b624423a7e8 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 abb4d2106db4..bb8e4025fb9e 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 dfaaea2efecb..247b1062cb9a 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -940,9 +940,6 @@ 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;
 
@@ -965,7 +962,6 @@ done:
 
 failed:
 	clear_bit(BTUSB_INTR_RUNNING, &data->flags);
-	clear_bit(HCI_RUNNING, &hdev->flags);
 	usb_autopm_put_interface(data->intf);
 	return err;
 }
@@ -984,9 +980,6 @@ 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);
 
@@ -1156,9 +1149,6 @@ 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);
@@ -1843,9 +1833,6 @@ 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)) {
diff --git a/drivers/bluetooth/btwilink.c b/drivers/bluetooth/btwilink.c
index 7a722df97343..57eb935aedc7 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 84135c54ed2e..5026f66fac88 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_bcm.c b/drivers/bluetooth/hci_bcm.c
index f30654149c63..645e66e9a945 100644
--- a/drivers/bluetooth/hci_bcm.c
+++ b/drivers/bluetooth/hci_bcm.c
@@ -32,6 +32,8 @@
 #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>
@@ -39,6 +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;
 
@@ -55,7 +62,7 @@ struct bcm_device {
 	int			irq;
 	u8			irq_polarity;
 
-#ifdef CONFIG_PM_SLEEP
+#ifdef CONFIG_PM
 	struct hci_uart		*hu;
 	bool			is_suspended; /* suspend/resume flag */
 #endif
@@ -152,13 +159,17 @@ static int bcm_gpio_set_power(struct bcm_device *dev, bool powered)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
+#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;
 }
 
@@ -182,6 +193,12 @@ static int bcm_request_irq(struct bcm_data *bcm)
 			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:
@@ -197,7 +214,7 @@ static const struct bcm_set_sleep_mode default_sleep_params = {
 	.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 = 0,	/* Combine sleep and LPM 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,
@@ -232,6 +249,29 @@ 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 (IS_ERR(skb))
+		return PTR_ERR(skb);
+
+	*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;
@@ -258,7 +298,7 @@ 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);
@@ -282,7 +322,10 @@ static int bcm_close(struct hci_uart *hu)
 	mutex_lock(&bcm_device_lock);
 	if (bcm_device_exists(bdev)) {
 		bcm_gpio_set_power(bdev, false);
-#ifdef CONFIG_PM_SLEEP
+#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);
@@ -322,6 +365,7 @@ static int bcm_setup(struct hci_uart *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));
@@ -379,10 +423,18 @@ finalize:
 	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)
@@ -399,6 +451,15 @@ static int bcm_recv(struct hci_uart *hu, const void *data, int count)
 		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;
@@ -420,28 +481,40 @@ 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);
+	}
 
-	return skb_dequeue(&bcm->txq);
+	mutex_unlock(&bcm_device_lock);
+
+	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));
-	int error;
-
-	bt_dev_dbg(bdev, "suspend: is_suspended %d", bdev->is_suspended);
-
-	mutex_lock(&bcm_device_lock);
 
-	if (!bdev->hu)
-		goto unlock;
+	bt_dev_dbg(bdev, "");
 
-	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;
 	}
 
@@ -452,6 +525,53 @@ static int bcm_suspend(struct device *dev)
 		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)
@@ -471,6 +591,10 @@ static int bcm_resume(struct device *dev)
 
 	bt_dev_dbg(bdev, "resume: is_suspended %d", bdev->is_suspended);
 
+	/* 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)
@@ -481,22 +605,15 @@ static int bcm_resume(struct device *dev)
 		bt_dev_dbg(bdev, "BCM irq: disabled");
 	}
 
-	if (bdev->device_wakeup) {
-		gpiod_set_value(bdev->device_wakeup, true);
-		bt_dev_dbg(bdev, "resume, delaying 15 ms");
-		mdelay(15);
-	}
-
-	/* 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:
 	mutex_unlock(&bcm_device_lock);
 
+	pm_runtime_disable(dev);
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+
 	return 0;
 }
 #endif
@@ -513,6 +630,22 @@ static const struct acpi_gpio_mapping acpi_bcm_default_gpios[] = {
 };
 
 #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;
@@ -549,15 +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),
@@ -602,11 +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;
 }
@@ -620,7 +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);
@@ -629,15 +763,9 @@ 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);
 
@@ -693,7 +821,10 @@ 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 eec3f28e4bb9..a6fce48da0fb 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 b35b238a0380..abee2216fdeb 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 49e25409de67..2952107e3bae 100644
--- a/drivers/bluetooth/hci_intel.c
+++ b/drivers/bluetooth/hci_intel.c
@@ -1165,22 +1165,6 @@ static const struct acpi_device_id intel_acpi_match[] = {
 	{ },
 };
 MODULE_DEVICE_TABLE(acpi, intel_acpi_match);
-
-static int intel_acpi_probe(struct intel_device *idev)
-{
-	const struct acpi_device_id *id;
-
-	id = acpi_match_device(intel_acpi_match, &idev->pdev->dev);
-	if (!id)
-		return -ENODEV;
-
-	return 0;
-}
-#else
-static int intel_acpi_probe(struct intel_device *idev)
-{
-	return -ENODEV;
-}
 #endif
 
 #ifdef CONFIG_PM
@@ -1248,14 +1232,6 @@ static int intel_probe(struct platform_device *pdev)
 
 	idev->pdev = pdev;
 
-	if (ACPI_HANDLE(&pdev->dev)) {
-		int err = intel_acpi_probe(idev);
-		if (err)
-			return err;
-	} else {
-		return -ENODEV;
-	}
-
 	idev->reset = devm_gpiod_get_optional(&pdev->dev, "reset",
 					      GPIOD_OUT_LOW);
 	if (IS_ERR(idev->reset)) {
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
index 0d5a05a7c1fd..01a83a3f8a1d 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);
 }
 
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index 21f4ea4ce610..b4a0393b2862 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -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;
diff --git a/drivers/bluetooth/hci_uart.h b/drivers/bluetooth/hci_uart.h
index 495b9ef52bb0..2f7bb35a890e 100644
--- a/drivers/bluetooth/hci_uart.h
+++ b/drivers/bluetooth/hci_uart.h
@@ -85,7 +85,6 @@ 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 78653db2ef2b..ed888e302bc3 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);