Merge branch 'for-upstream' of...

Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next

Johan Hedberg says:

====================
pull request: linux-bluetooth 2019-11-11

Here's one more bluetooth-next pull request for the 5.5 kernel release.

 - Several fixes for LE advertising
 - Added PM support to hci_qca driver
 - Added support for WCN3991 SoC in hci_qca driver
 - Added DT bindings for BCM43540 module
 - A few other small cleanups/fixes
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/devicetree/bindings/net/broadcom-bluetooth.txt

@@ -14,6 +14,7 @@ Required properties:
    * "brcm,bcm4330-bt"
    * "brcm,bcm43438-bt"
    * "brcm,bcm4345c5"
+   * "brcm,bcm43540-bt"
 
 Optional properties:
 

drivers/bluetooth/btmtksdio.c

@@ -57,6 +57,7 @@ static const struct sdio_device_id btmtksdio_table[] = {
 	 .driver_data = (kernel_ulong_t)&mt7668_data },
 	{ }	/* Terminating entry */
 };
+MODULE_DEVICE_TABLE(sdio, btmtksdio_table);
 
 #define MTK_REG_CHLPCR		0x4	/* W1S */
 #define C_INT_EN_SET		BIT(0)

drivers/bluetooth/btqca.c

@@ -14,19 +14,33 @@
 
 #define VERSION "0.1"
 
-int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version)
+int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version,
+			 enum qca_btsoc_type soc_type)
 {
 	struct sk_buff *skb;
 	struct edl_event_hdr *edl;
-	struct rome_version *ver;
+	struct qca_btsoc_version *ver;
 	char cmd;
 	int err = 0;
+	u8 event_type = HCI_EV_VENDOR;
+	u8 rlen = sizeof(*edl) + sizeof(*ver);
+	u8 rtype = EDL_APP_VER_RES_EVT;
 
 	bt_dev_dbg(hdev, "QCA Version Request");
 
+	/* Unlike other SoC's sending version command response as payload to
+	 * VSE event. WCN3991 sends version command response as a payload to
+	 * command complete event.
+	 */
+	if (soc_type == QCA_WCN3991) {
+		event_type = 0;
+		rlen += 1;
+		rtype = EDL_PATCH_VER_REQ_CMD;
+	}
+
 	cmd = EDL_PATCH_VER_REQ_CMD;
 	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
-				&cmd, HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
+				&cmd, event_type, HCI_INIT_TIMEOUT);
 	if (IS_ERR(skb)) {
 		err = PTR_ERR(skb);
 		bt_dev_err(hdev, "Reading QCA version information failed (%d)",
@@ -34,7 +48,7 @@ int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version)
 		return err;
 	}
 
-	if (skb->len != sizeof(*edl) + sizeof(*ver)) {
+	if (skb->len != rlen) {
 		bt_dev_err(hdev, "QCA Version size mismatch len %d", skb->len);
 		err = -EILSEQ;
 		goto out;
@@ -48,18 +62,21 @@ int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version)
 	}
 
 	if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
-	    edl->rtype != EDL_APP_VER_RES_EVT) {
+	    edl->rtype != rtype) {
 		bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
 			   edl->rtype);
 		err = -EIO;
 		goto out;
 	}
 
-	ver = (struct rome_version *)(edl->data);
+	if (soc_type == QCA_WCN3991)
+		memmove(&edl->data, &edl->data[1], sizeof(*ver));
+
+	ver = (struct qca_btsoc_version *)(edl->data);
 
 	BT_DBG("%s: Product:0x%08x", hdev->name, le32_to_cpu(ver->product_id));
 	BT_DBG("%s: Patch  :0x%08x", hdev->name, le16_to_cpu(ver->patch_ver));
-	BT_DBG("%s: ROM    :0x%08x", hdev->name, le16_to_cpu(ver->rome_ver));
+	BT_DBG("%s: ROM    :0x%08x", hdev->name, le16_to_cpu(ver->rom_ver));
 	BT_DBG("%s: SOC    :0x%08x", hdev->name, le32_to_cpu(ver->soc_id));
 
 	/* QCA chipset version can be decided by patch and SoC
@@ -67,7 +84,7 @@ int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version)
 	 * and lower 2 bytes from patch will be used.
 	 */
 	*soc_version = (le32_to_cpu(ver->soc_id) << 16) |
-			(le16_to_cpu(ver->rome_ver) & 0x0000ffff);
+			(le16_to_cpu(ver->rom_ver) & 0x0000ffff);
 	if (*soc_version == 0)
 		err = -EILSEQ;
 
@@ -121,7 +138,7 @@ int qca_send_pre_shutdown_cmd(struct hci_dev *hdev)
 }
 EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd);
 
-static void qca_tlv_check_data(struct rome_config *config,
+static void qca_tlv_check_data(struct qca_fw_config *config,
 				const struct firmware *fw)
 {
 	const u8 *data;
@@ -140,8 +157,8 @@ static void qca_tlv_check_data(struct rome_config *config,
 	BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
 	BT_DBG("Length\t\t : %d bytes", length);
 
-	config->dnld_mode = ROME_SKIP_EVT_NONE;
-	config->dnld_type = ROME_SKIP_EVT_NONE;
+	config->dnld_mode = QCA_SKIP_EVT_NONE;
+	config->dnld_type = QCA_SKIP_EVT_NONE;
 
 	switch (config->type) {
 	case TLV_TYPE_PATCH:
@@ -223,31 +240,45 @@ static void qca_tlv_check_data(struct rome_config *config,
 }
 
 static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size,
-				 const u8 *data, enum rome_tlv_dnld_mode mode)
+				const u8 *data, enum qca_tlv_dnld_mode mode,
+				enum qca_btsoc_type soc_type)
 {
 	struct sk_buff *skb;
 	struct edl_event_hdr *edl;
 	struct tlv_seg_resp *tlv_resp;
 	u8 cmd[MAX_SIZE_PER_TLV_SEGMENT + 2];
 	int err = 0;
+	u8 event_type = HCI_EV_VENDOR;
+	u8 rlen = (sizeof(*edl) + sizeof(*tlv_resp));
+	u8 rtype = EDL_TVL_DNLD_RES_EVT;
 
 	cmd[0] = EDL_PATCH_TLV_REQ_CMD;
 	cmd[1] = seg_size;
 	memcpy(cmd + 2, data, seg_size);
 
-	if (mode == ROME_SKIP_EVT_VSE_CC || mode == ROME_SKIP_EVT_VSE)
+	if (mode == QCA_SKIP_EVT_VSE_CC || mode == QCA_SKIP_EVT_VSE)
 		return __hci_cmd_send(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2,
 				      cmd);
 
+	/* Unlike other SoC's sending version command response as payload to
+	 * VSE event. WCN3991 sends version command response as a payload to
+	 * command complete event.
+	 */
+	if (soc_type == QCA_WCN3991) {
+		event_type = 0;
+		rlen = sizeof(*edl);
+		rtype = EDL_PATCH_TLV_REQ_CMD;
+	}
+
 	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2, cmd,
-				HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
+				event_type, HCI_INIT_TIMEOUT);
 	if (IS_ERR(skb)) {
 		err = PTR_ERR(skb);
 		bt_dev_err(hdev, "QCA Failed to send TLV segment (%d)", err);
 		return err;
 	}
 
-	if (skb->len != sizeof(*edl) + sizeof(*tlv_resp)) {
+	if (skb->len != rlen) {
 		bt_dev_err(hdev, "QCA TLV response size mismatch");
 		err = -EILSEQ;
 		goto out;
@@ -260,13 +291,19 @@ static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size,
 		goto out;
 	}
 
-	tlv_resp = (struct tlv_seg_resp *)(edl->data);
+	if (edl->cresp != EDL_CMD_REQ_RES_EVT || edl->rtype != rtype) {
+		bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x",
+			   edl->cresp, edl->rtype);
+		err = -EIO;
+	}
 
-	if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
-	    edl->rtype != EDL_TVL_DNLD_RES_EVT || tlv_resp->result != 0x00) {
+	if (soc_type == QCA_WCN3991)
+		goto out;
+
+	tlv_resp = (struct tlv_seg_resp *)(edl->data);
+	if (tlv_resp->result) {
 		bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x (0x%x)",
 			   edl->cresp, edl->rtype, tlv_resp->result);
-		err = -EIO;
 	}
 
 out:
@@ -301,7 +338,8 @@ static int qca_inject_cmd_complete_event(struct hci_dev *hdev)
 }
 
 static int qca_download_firmware(struct hci_dev *hdev,
-				  struct rome_config *config)
+				 struct qca_fw_config *config,
+				 enum qca_btsoc_type soc_type)
 {
 	const struct firmware *fw;
 	const u8 *segment;
@@ -328,10 +366,10 @@ static int qca_download_firmware(struct hci_dev *hdev,
 		remain -= segsize;
 		/* The last segment is always acked regardless download mode */
 		if (!remain || segsize < MAX_SIZE_PER_TLV_SEGMENT)
-			config->dnld_mode = ROME_SKIP_EVT_NONE;
+			config->dnld_mode = QCA_SKIP_EVT_NONE;
 
 		ret = qca_tlv_send_segment(hdev, segsize, segment,
-					    config->dnld_mode);
+					   config->dnld_mode, soc_type);
 		if (ret)
 			goto out;
 
@@ -344,8 +382,8 @@ static int qca_download_firmware(struct hci_dev *hdev,
 	 * decrease the BT in initialization time. Here we will inject a command
 	 * complete event to avoid a command timeout error message.
 	 */
-	if (config->dnld_type == ROME_SKIP_EVT_VSE_CC ||
-	    config->dnld_type == ROME_SKIP_EVT_VSE)
+	if (config->dnld_type == QCA_SKIP_EVT_VSE_CC ||
+	    config->dnld_type == QCA_SKIP_EVT_VSE)
 		ret = qca_inject_cmd_complete_event(hdev);
 
 out:
@@ -382,7 +420,7 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
 		   enum qca_btsoc_type soc_type, u32 soc_ver,
 		   const char *firmware_name)
 {
-	struct rome_config config;
+	struct qca_fw_config config;
 	int err;
 	u8 rom_ver = 0;
 
@@ -405,7 +443,7 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
 			 "qca/rampatch_%08x.bin", soc_ver);
 	}
 
-	err = qca_download_firmware(hdev, &config);
+	err = qca_download_firmware(hdev, &config, soc_type);
 	if (err < 0) {
 		bt_dev_err(hdev, "QCA Failed to download patch (%d)", err);
 		return err;
@@ -426,7 +464,7 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
 		snprintf(config.fwname, sizeof(config.fwname),
 			 "qca/nvm_%08x.bin", soc_ver);
 
-	err = qca_download_firmware(hdev, &config);
+	err = qca_download_firmware(hdev, &config, soc_type);
 	if (err < 0) {
 		bt_dev_err(hdev, "QCA Failed to download NVM (%d)", err);
 		return err;

drivers/bluetooth/btqca.h

@@ -56,24 +56,24 @@ enum qca_baudrate {
 	QCA_BAUDRATE_RESERVED
 };
 
-enum rome_tlv_dnld_mode {
-	ROME_SKIP_EVT_NONE,
-	ROME_SKIP_EVT_VSE,
-	ROME_SKIP_EVT_CC,
-	ROME_SKIP_EVT_VSE_CC
+enum qca_tlv_dnld_mode {
+	QCA_SKIP_EVT_NONE,
+	QCA_SKIP_EVT_VSE,
+	QCA_SKIP_EVT_CC,
+	QCA_SKIP_EVT_VSE_CC
 };
 
-enum rome_tlv_type {
+enum qca_tlv_type {
 	TLV_TYPE_PATCH = 1,
 	TLV_TYPE_NVM
 };
 
-struct rome_config {
+struct qca_fw_config {
 	u8 type;
 	char fwname[64];
 	uint8_t user_baud_rate;
-	enum rome_tlv_dnld_mode dnld_mode;
-	enum rome_tlv_dnld_mode dnld_type;
+	enum qca_tlv_dnld_mode dnld_mode;
+	enum qca_tlv_dnld_mode dnld_type;
 };
 
 struct edl_event_hdr {
@@ -82,10 +82,10 @@ struct edl_event_hdr {
 	__u8 data[0];
 } __packed;
 
-struct rome_version {
+struct qca_btsoc_version {
 	__le32 product_id;
 	__le16 patch_ver;
-	__le16 rome_ver;
+	__le16 rom_ver;
 	__le32 soc_id;
 } __packed;
 
@@ -125,6 +125,7 @@ enum qca_btsoc_type {
 	QCA_AR3002,
 	QCA_ROME,
 	QCA_WCN3990,
+	QCA_WCN3991,
 	QCA_WCN3998,
 };
 
@@ -134,12 +135,14 @@ int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr);
 int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
 		   enum qca_btsoc_type soc_type, u32 soc_ver,
 		   const char *firmware_name);
-int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version);
+int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version,
+			 enum qca_btsoc_type);
 int qca_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr);
 int qca_send_pre_shutdown_cmd(struct hci_dev *hdev);
 static inline bool qca_is_wcn399x(enum qca_btsoc_type soc_type)
 {
-	return soc_type == QCA_WCN3990 || soc_type == QCA_WCN3998;
+	return soc_type == QCA_WCN3990 || soc_type == QCA_WCN3991 ||
+	       soc_type == QCA_WCN3998;
 }
 #else
 
@@ -155,7 +158,8 @@ static inline int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
 	return -EOPNOTSUPP;
 }
 
-static inline int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version)
+static inline int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version,
+				       enum qca_btsoc_type)
 {
 	return -EOPNOTSUPP;
 }

drivers/bluetooth/btrtl.c

@@ -778,7 +778,7 @@ int btrtl_get_uart_settings(struct hci_dev *hdev,
 			rtl_dev_dbg(hdev, "skipping config entry 0x%x (len %u)",
 				   le16_to_cpu(entry->offset), entry->len);
 			break;
-		};
+		}
 
 		i += sizeof(*entry) + entry->len;
 	}

drivers/bluetooth/hci_bcm.c

@@ -1424,6 +1424,7 @@ static const struct of_device_id bcm_bluetooth_of_match[] = {
 	{ .compatible = "brcm,bcm4345c5" },
 	{ .compatible = "brcm,bcm4330-bt" },
 	{ .compatible = "brcm,bcm43438-bt" },
+	{ .compatible = "brcm,bcm43540-bt" },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, bcm_bluetooth_of_match);

drivers/bluetooth/hci_bcsp.c

@@ -591,6 +591,7 @@ static int bcsp_recv(struct hci_uart *hu, const void *data, int count)
 			if (*ptr == 0xc0) {
 				BT_ERR("Short BCSP packet");
 				kfree_skb(bcsp->rx_skb);
+				bcsp->rx_skb = NULL;
 				bcsp->rx_state = BCSP_W4_PKT_START;
 				bcsp->rx_count = 0;
 			} else
@@ -606,6 +607,7 @@ static int bcsp_recv(struct hci_uart *hu, const void *data, int count)
 			    bcsp->rx_skb->data[2])) != bcsp->rx_skb->data[3]) {
 				BT_ERR("Error in BCSP hdr checksum");
 				kfree_skb(bcsp->rx_skb);
+				bcsp->rx_skb = NULL;
 				bcsp->rx_state = BCSP_W4_PKT_DELIMITER;
 				bcsp->rx_count = 0;
 				continue;
@@ -630,6 +632,7 @@ static int bcsp_recv(struct hci_uart *hu, const void *data, int count)
 				       bscp_get_crc(bcsp));
 
 				kfree_skb(bcsp->rx_skb);
+				bcsp->rx_skb = NULL;
 				bcsp->rx_state = BCSP_W4_PKT_DELIMITER;
 				bcsp->rx_count = 0;
 				continue;

drivers/bluetooth/hci_qca.c

@@ -43,7 +43,8 @@
 #define HCI_MAX_IBS_SIZE	10
 
 #define IBS_WAKE_RETRANS_TIMEOUT_MS	100
-#define IBS_TX_IDLE_TIMEOUT_MS		2000
+#define IBS_BTSOC_TX_IDLE_TIMEOUT_MS	40
+#define IBS_HOST_TX_IDLE_TIMEOUT_MS	2000
 #define CMD_TRANS_TIMEOUT_MS		100
 
 /* susclk rate */
@@ -55,6 +56,7 @@
 enum qca_flags {
 	QCA_IBS_ENABLED,
 	QCA_DROP_VENDOR_EVENT,
+	QCA_SUSPENDING,
 };
 
 /* HCI_IBS transmit side sleep protocol states */
@@ -100,6 +102,7 @@ struct qca_data {
 	struct work_struct ws_tx_vote_off;
 	unsigned long flags;
 	struct completion drop_ev_comp;
+	wait_queue_head_t suspend_wait_q;
 
 	/* For debugging purpose */
 	u64 ibs_sent_wacks;
@@ -437,6 +440,12 @@ static void hci_ibs_wake_retrans_timeout(struct timer_list *t)
 	spin_lock_irqsave_nested(&qca->hci_ibs_lock,
 				 flags, SINGLE_DEPTH_NESTING);
 
+	/* Don't retransmit the HCI_IBS_WAKE_IND when suspending. */
+	if (test_bit(QCA_SUSPENDING, &qca->flags)) {
+		spin_unlock_irqrestore(&qca->hci_ibs_lock, flags);
+		return;
+	}
+
 	switch (qca->tx_ibs_state) {
 	case HCI_IBS_TX_WAKING:
 		/* No WAKE_ACK, retransmit WAKE */
@@ -496,6 +505,8 @@ static int qca_open(struct hci_uart *hu)
 	INIT_WORK(&qca->ws_rx_vote_off, qca_wq_serial_rx_clock_vote_off);
 	INIT_WORK(&qca->ws_tx_vote_off, qca_wq_serial_tx_clock_vote_off);
 
+	init_waitqueue_head(&qca->suspend_wait_q);
+
 	qca->hu = hu;
 	init_completion(&qca->drop_ev_comp);
 
@@ -532,7 +543,7 @@ static int qca_open(struct hci_uart *hu)
 	qca->wake_retrans = IBS_WAKE_RETRANS_TIMEOUT_MS;
 
 	timer_setup(&qca->tx_idle_timer, hci_ibs_tx_idle_timeout, 0);
-	qca->tx_idle_delay = IBS_TX_IDLE_TIMEOUT_MS;
+	qca->tx_idle_delay = IBS_HOST_TX_IDLE_TIMEOUT_MS;
 
 	BT_DBG("HCI_UART_QCA open, tx_idle_delay=%u, wake_retrans=%u",
 	       qca->tx_idle_delay, qca->wake_retrans);
@@ -647,6 +658,12 @@ static void device_want_to_wakeup(struct hci_uart *hu)
 
 	qca->ibs_recv_wakes++;
 
+	/* Don't wake the rx up when suspending. */
+	if (test_bit(QCA_SUSPENDING, &qca->flags)) {
+		spin_unlock_irqrestore(&qca->hci_ibs_lock, flags);
+		return;
+	}
+
 	switch (qca->rx_ibs_state) {
 	case HCI_IBS_RX_ASLEEP:
 		/* Make sure clock is on - we may have turned clock off since
@@ -711,6 +728,8 @@ static void device_want_to_sleep(struct hci_uart *hu)
 		break;
 	}
 
+	wake_up_interruptible(&qca->suspend_wait_q);
+
 	spin_unlock_irqrestore(&qca->hci_ibs_lock, flags);
 }
 
@@ -728,6 +747,12 @@ static void device_woke_up(struct hci_uart *hu)
 
 	qca->ibs_recv_wacks++;
 
+	/* Don't react to the wake-up-acknowledgment when suspending. */
+	if (test_bit(QCA_SUSPENDING, &qca->flags)) {
+		spin_unlock_irqrestore(&qca->hci_ibs_lock, flags);
+		return;
+	}
+
 	switch (qca->tx_ibs_state) {
 	case HCI_IBS_TX_AWAKE:
 		/* Expect one if we send 2 WAKEs */
@@ -780,8 +805,10 @@ static int qca_enqueue(struct hci_uart *hu, struct sk_buff *skb)
 
 	/* Don't go to sleep in middle of patch download or
 	 * Out-Of-Band(GPIOs control) sleep is selected.
+	 * Don't wake the device up when suspending.
 	 */
-	if (!test_bit(QCA_IBS_ENABLED, &qca->flags)) {
+	if (!test_bit(QCA_IBS_ENABLED, &qca->flags) ||
+	    test_bit(QCA_SUSPENDING, &qca->flags)) {
 		skb_queue_tail(&qca->txq, skb);
 		spin_unlock_irqrestore(&qca->hci_ibs_lock, flags);
 		return 0;
@@ -1261,7 +1288,7 @@ static int qca_setup(struct hci_uart *hu)
 		if (ret)
 			return ret;
 
-		ret = qca_read_soc_version(hdev, &soc_ver);
+		ret = qca_read_soc_version(hdev, &soc_ver, soc_type);
 		if (ret)
 			return ret;
 	} else {
@@ -1281,7 +1308,7 @@ static int qca_setup(struct hci_uart *hu)
 
 	if (!qca_is_wcn399x(soc_type)) {
 		/* Get QCA version information */
-		ret = qca_read_soc_version(hdev, &soc_ver);
+		ret = qca_read_soc_version(hdev, &soc_ver, soc_type);
 		if (ret)
 			return ret;
 	}
@@ -1339,6 +1366,17 @@ static const struct qca_vreg_data qca_soc_data_wcn3990 = {
 	.num_vregs = 4,
 };
 
+static const struct qca_vreg_data qca_soc_data_wcn3991 = {
+	.soc_type = QCA_WCN3991,
+	.vregs = (struct qca_vreg []) {
+		{ "vddio", 15000  },
+		{ "vddxo", 80000  },
+		{ "vddrf", 300000 },
+		{ "vddch0", 450000 },
+	},
+	.num_vregs = 4,
+};
+
 static const struct qca_vreg_data qca_soc_data_wcn3998 = {
 	.soc_type = QCA_WCN3998,
 	.vregs = (struct qca_vreg []) {
@@ -1539,9 +1577,103 @@ static void qca_serdev_remove(struct serdev_device *serdev)
 	hci_uart_unregister_device(&qcadev->serdev_hu);
 }
 
+static int __maybe_unused qca_suspend(struct device *dev)
+{
+	struct hci_dev *hdev = container_of(dev, struct hci_dev, dev);
+	struct hci_uart *hu = hci_get_drvdata(hdev);
+	struct qca_data *qca = hu->priv;
+	unsigned long flags;
+	int ret = 0;
+	u8 cmd;
+
+	set_bit(QCA_SUSPENDING, &qca->flags);
+
+	/* Device is downloading patch or doesn't support in-band sleep. */
+	if (!test_bit(QCA_IBS_ENABLED, &qca->flags))
+		return 0;
+
+	cancel_work_sync(&qca->ws_awake_device);
+	cancel_work_sync(&qca->ws_awake_rx);
+
+	spin_lock_irqsave_nested(&qca->hci_ibs_lock,
+				 flags, SINGLE_DEPTH_NESTING);
+
+	switch (qca->tx_ibs_state) {
+	case HCI_IBS_TX_WAKING:
+		del_timer(&qca->wake_retrans_timer);
+		/* Fall through */
+	case HCI_IBS_TX_AWAKE:
+		del_timer(&qca->tx_idle_timer);
+
+		serdev_device_write_flush(hu->serdev);
+		cmd = HCI_IBS_SLEEP_IND;
+		ret = serdev_device_write_buf(hu->serdev, &cmd, sizeof(cmd));
+
+		if (ret < 0) {
+			BT_ERR("Failed to send SLEEP to device");
+			break;
+		}
+
+		qca->tx_ibs_state = HCI_IBS_TX_ASLEEP;
+		qca->ibs_sent_slps++;
+
+		qca_wq_serial_tx_clock_vote_off(&qca->ws_tx_vote_off);
+		break;
+
+	case HCI_IBS_TX_ASLEEP:
+		break;
+
+	default:
+		BT_ERR("Spurious tx state %d", qca->tx_ibs_state);
+		ret = -EINVAL;
+		break;
+	}
+
+	spin_unlock_irqrestore(&qca->hci_ibs_lock, flags);
+
+	if (ret < 0)
+		goto error;
+
+	serdev_device_wait_until_sent(hu->serdev,
+				      msecs_to_jiffies(CMD_TRANS_TIMEOUT_MS));
+
+	/* Wait for HCI_IBS_SLEEP_IND sent by device to indicate its Tx is going
+	 * to sleep, so that the packet does not wake the system later.
+	 */
+
+	ret = wait_event_interruptible_timeout(qca->suspend_wait_q,
+			qca->rx_ibs_state == HCI_IBS_RX_ASLEEP,
+			msecs_to_jiffies(IBS_BTSOC_TX_IDLE_TIMEOUT_MS));
+
+	if (ret > 0)
+		return 0;
+
+	if (ret == 0)
+		ret = -ETIMEDOUT;
+
+error:
+	clear_bit(QCA_SUSPENDING, &qca->flags);
+
+	return ret;
+}
+
+static int __maybe_unused qca_resume(struct device *dev)
+{
+	struct hci_dev *hdev = container_of(dev, struct hci_dev, dev);
+	struct hci_uart *hu = hci_get_drvdata(hdev);
+	struct qca_data *qca = hu->priv;
+
+	clear_bit(QCA_SUSPENDING, &qca->flags);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(qca_pm_ops, qca_suspend, qca_resume);
+
 static const struct of_device_id qca_bluetooth_of_match[] = {
 	{ .compatible = "qcom,qca6174-bt" },
 	{ .compatible = "qcom,wcn3990-bt", .data = &qca_soc_data_wcn3990},
+	{ .compatible = "qcom,wcn3991-bt", .data = &qca_soc_data_wcn3991},
 	{ .compatible = "qcom,wcn3998-bt", .data = &qca_soc_data_wcn3998},
 	{ /* sentinel */ }
 };
@@ -1553,6 +1685,7 @@ static struct serdev_device_driver qca_serdev_driver = {
 	.driver = {
 		.name = "hci_uart_qca",
 		.of_match_table = qca_bluetooth_of_match,
+		.pm = &qca_pm_ops,
 	},
 };
 

net/bluetooth/hci_request.c

@@ -904,9 +904,9 @@ static u8 get_adv_instance_scan_rsp_len(struct hci_dev *hdev, u8 instance)
 {
 	struct adv_info *adv_instance;
 
-	/* Ignore instance 0 */
+	/* Instance 0x00 always set local name */
 	if (instance == 0x00)
-		return 0;
+		return 1;
 
 	adv_instance = hci_find_adv_instance(hdev, instance);
 	if (!adv_instance)
@@ -923,9 +923,9 @@ static u8 get_cur_adv_instance_scan_rsp_len(struct hci_dev *hdev)
 	u8 instance = hdev->cur_adv_instance;
 	struct adv_info *adv_instance;
 
-	/* Ignore instance 0 */
+	/* Instance 0x00 always set local name */
 	if (instance == 0x00)
-		return 0;
+		return 1;
 
 	adv_instance = hci_find_adv_instance(hdev, instance);
 	if (!adv_instance)
@@ -1273,6 +1273,14 @@ static u8 create_instance_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr)
 
 	instance_flags = get_adv_instance_flags(hdev, instance);
 
+	/* If instance already has the flags set skip adding it once
+	 * again.
+	 */
+	if (adv_instance && eir_get_data(adv_instance->adv_data,
+					 adv_instance->adv_data_len, EIR_FLAGS,
+					 NULL))
+		goto skip_flags;
+
 	/* The Add Advertising command allows userspace to set both the general
 	 * and limited discoverable flags.
 	 */
@@ -1305,6 +1313,7 @@ static u8 create_instance_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr)
 		}
 	}
 
+skip_flags:
 	if (adv_instance) {
 		memcpy(ptr, adv_instance->adv_data,
 		       adv_instance->adv_data_len);
@@ -1690,7 +1699,7 @@ int __hci_req_enable_ext_advertising(struct hci_request *req, u8 instance)
 	 * scheduling it.
 	 */
 	if (adv_instance && adv_instance->duration) {
-		u16 duration = adv_instance->duration * MSEC_PER_SEC;
+		u16 duration = adv_instance->timeout * MSEC_PER_SEC;
 
 		/* Time = N * 10 ms */
 		adv_set->duration = cpu_to_le16(duration / 10);