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

Johan Hedberg says:

====================
pull request: bluetooth-next 2015-08-28

One more bunch of Bluetooth patches for 4.3:

 - Crash fix for hci_bcm driver
 - Enhancements to hci_intel driver (e.g. baudrate configuration)
 - Fix for SCO link type after multiple connect attempts
 - Cleanups & minor fixes in a few other places

Please let me know if there are any issues pulling. Thanks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

6 files changed, 348 insertions, 31 deletions

diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c
index 1ce4ac16c7fa..048423fd83bf 100644
--- a/drivers/bluetooth/btintel.c
+++ b/drivers/bluetooth/btintel.c
@@ -173,3 +173,5 @@ MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
 MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION);
 MODULE_VERSION(VERSION);
 MODULE_LICENSE("GPL");
+MODULE_FIRMWARE("intel/ibt-11-5.sfi");
+MODULE_FIRMWARE("intel/ibt-11-5.ddc");
diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c
index 7c097629e593..b9978a7ba0cc 100644
--- a/drivers/bluetooth/btmrvl_sdio.c
+++ b/drivers/bluetooth/btmrvl_sdio.c
@@ -1376,8 +1376,7 @@ done:
 
 	/* fw_dump_data will be free in device coredump release function
 	   after 5 min*/
-	dev_coredumpv(&priv->btmrvl_dev.hcidev->dev, fw_dump_data,
-		      fw_dump_len, GFP_KERNEL);
+	dev_coredumpv(&card->func->dev, fw_dump_data, fw_dump_len, GFP_KERNEL);
 	BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump end");
 }
 
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index f759dea7d3ba..b6aceaf82aa8 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -1581,7 +1581,7 @@ static int btusb_setup_intel(struct hci_dev *hdev)
 
 	/* fw_patch_num indicates the version of patch the device currently
 	 * have. If there is no patch data in the device, it is always 0x00.
-	 * So, if it is other than 0x00, no need to patch the deivce again.
+	 * So, if it is other than 0x00, no need to patch the device again.
 	 */
 	if (ver->fw_patch_num) {
 		BT_INFO("%s: Intel device is already patched. patch num: %02x",
@@ -2100,7 +2100,7 @@ static int btusb_setup_intel_new(struct hci_dev *hdev)
 
 		frag_len += sizeof(*cmd) + cmd->plen;
 
-		/* The paramter length of the secure send command requires
+		/* The parameter length of the secure send command requires
 		 * a 4 byte alignment. It happens so that the firmware file
 		 * contains proper Intel_NOP commands to align the fragments
 		 * as needed.
diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
index 322302b04710..835bfab88ef5 100644
--- a/drivers/bluetooth/hci_bcm.c
+++ b/drivers/bluetooth/hci_bcm.c
@@ -66,7 +66,7 @@ struct bcm_data {
 };
 
 /* List of BCM BT UART devices */
-static DEFINE_SPINLOCK(bcm_device_list_lock);
+static DEFINE_SPINLOCK(bcm_device_lock);
 static LIST_HEAD(bcm_device_list);
 
 static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed)
@@ -118,7 +118,7 @@ static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed)
 	return 0;
 }
 
-/* bcm_device_exists should be protected by bcm_device_list_lock */
+/* bcm_device_exists should be protected by bcm_device_lock */
 static bool bcm_device_exists(struct bcm_device *device)
 {
 	struct list_head *p;
@@ -138,8 +138,8 @@ static int bcm_gpio_set_power(struct bcm_device *dev, bool powered)
 	if (powered && !IS_ERR(dev->clk) && !dev->clk_enabled)
 		clk_enable(dev->clk);
 
-	gpiod_set_value_cansleep(dev->shutdown, powered);
-	gpiod_set_value_cansleep(dev->device_wakeup, powered);
+	gpiod_set_value(dev->shutdown, powered);
+	gpiod_set_value(dev->device_wakeup, powered);
 
 	if (!powered && !IS_ERR(dev->clk) && dev->clk_enabled)
 		clk_disable(dev->clk);
@@ -164,7 +164,7 @@ static int bcm_open(struct hci_uart *hu)
 
 	hu->priv = bcm;
 
-	spin_lock(&bcm_device_list_lock);
+	spin_lock(&bcm_device_lock);
 	list_for_each(p, &bcm_device_list) {
 		struct bcm_device *dev = list_entry(p, struct bcm_device, list);
 
@@ -185,7 +185,7 @@ static int bcm_open(struct hci_uart *hu)
 	if (bcm->dev)
 		bcm_gpio_set_power(bcm->dev, true);
 
-	spin_unlock(&bcm_device_list_lock);
+	spin_unlock(&bcm_device_lock);
 
 	return 0;
 }
@@ -197,14 +197,14 @@ static int bcm_close(struct hci_uart *hu)
 	BT_DBG("hu %p", hu);
 
 	/* Protect bcm->dev against removal of the device or driver */
-	spin_lock(&bcm_device_list_lock);
+	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;
 #endif
 	}
-	spin_unlock(&bcm_device_list_lock);
+	spin_unlock(&bcm_device_lock);
 
 	skb_queue_purge(&bcm->txq);
 	kfree_skb(bcm->rx_skb);
@@ -338,6 +338,11 @@ static int bcm_suspend(struct device *dev)
 
 	BT_DBG("suspend (%p): is_suspended %d", bdev, bdev->is_suspended);
 
+	spin_lock(&bcm_device_lock);
+
+	if (!bdev->hu)
+		goto unlock;
+
 	if (!bdev->is_suspended) {
 		hci_uart_set_flow_control(bdev->hu, true);
 
@@ -352,6 +357,9 @@ static int bcm_suspend(struct device *dev)
 		mdelay(15);
 	}
 
+unlock:
+	spin_unlock(&bcm_device_lock);
+
 	return 0;
 }
 
@@ -362,6 +370,11 @@ static int bcm_resume(struct device *dev)
 
 	BT_DBG("resume (%p): is_suspended %d", bdev, bdev->is_suspended);
 
+	spin_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");
@@ -375,6 +388,9 @@ static int bcm_resume(struct device *dev)
 		hci_uart_set_flow_control(bdev->hu, false);
 	}
 
+unlock:
+	spin_unlock(&bcm_device_lock);
+
 	return 0;
 }
 #endif
@@ -488,9 +504,9 @@ static int bcm_probe(struct platform_device *pdev)
 	dev_info(&pdev->dev, "%s device registered.\n", dev->name);
 
 	/* Place this instance on the device list */
-	spin_lock(&bcm_device_list_lock);
+	spin_lock(&bcm_device_lock);
 	list_add_tail(&dev->list, &bcm_device_list);
-	spin_unlock(&bcm_device_list_lock);
+	spin_unlock(&bcm_device_lock);
 
 	bcm_gpio_set_power(dev, false);
 
@@ -501,9 +517,9 @@ static int bcm_remove(struct platform_device *pdev)
 {
 	struct bcm_device *dev = platform_get_drvdata(pdev);
 
-	spin_lock(&bcm_device_list_lock);
+	spin_lock(&bcm_device_lock);
 	list_del(&dev->list);
-	spin_unlock(&bcm_device_list_lock);
+	spin_unlock(&bcm_device_lock);
 
 	acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pdev->dev));
 
diff --git a/drivers/bluetooth/hci_h4.c b/drivers/bluetooth/hci_h4.c
index 57faddc53645..eec3f28e4bb9 100644
--- a/drivers/bluetooth/hci_h4.c
+++ b/drivers/bluetooth/hci_h4.c
@@ -223,8 +223,7 @@ struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb,
 			switch ((&pkts[i])->lsize) {
 			case 0:
 				/* No variable data length */
-				(&pkts[i])->recv(hdev, skb);
-				skb = NULL;
+				dlen = 0;
 				break;
 			case 1:
 				/* Single octet variable length */
@@ -252,6 +251,12 @@ struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb,
 				kfree_skb(skb);
 				return ERR_PTR(-EILSEQ);
 			}
+
+			if (!dlen) {
+				/* No more data, complete frame */
+				(&pkts[i])->recv(hdev, skb);
+				skb = NULL;
+			}
 		} else {
 			/* Complete frame */
 			(&pkts[i])->recv(hdev, skb);
diff --git a/drivers/bluetooth/hci_intel.c b/drivers/bluetooth/hci_intel.c
index 21dfa89751df..cf07d1121956 100644
--- a/drivers/bluetooth/hci_intel.c
+++ b/drivers/bluetooth/hci_intel.c
@@ -25,7 +25,12 @@
 #include <linux/errno.h>
 #include <linux/skbuff.h>
 #include <linux/firmware.h>
+#include <linux/module.h>
 #include <linux/wait.h>
+#include <linux/tty.h>
+#include <linux/platform_device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/acpi.h>
 
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
@@ -39,12 +44,108 @@
 #define STATE_FIRMWARE_FAILED	3
 #define STATE_BOOTING		4
 
+struct intel_device {
+	struct list_head list;
+	struct platform_device *pdev;
+	struct gpio_desc *reset;
+};
+
+static LIST_HEAD(intel_device_list);
+static DEFINE_SPINLOCK(intel_device_list_lock);
+
 struct intel_data {
 	struct sk_buff *rx_skb;
 	struct sk_buff_head txq;
 	unsigned long flags;
 };
 
+static u8 intel_convert_speed(unsigned int speed)
+{
+	switch (speed) {
+	case 9600:
+		return 0x00;
+	case 19200:
+		return 0x01;
+	case 38400:
+		return 0x02;
+	case 57600:
+		return 0x03;
+	case 115200:
+		return 0x04;
+	case 230400:
+		return 0x05;
+	case 460800:
+		return 0x06;
+	case 921600:
+		return 0x07;
+	case 1843200:
+		return 0x08;
+	case 3250000:
+		return 0x09;
+	case 2000000:
+		return 0x0a;
+	case 3000000:
+		return 0x0b;
+	default:
+		return 0xff;
+	}
+}
+
+static int intel_wait_booting(struct hci_uart *hu)
+{
+	struct intel_data *intel = hu->priv;
+	int err;
+
+	err = wait_on_bit_timeout(&intel->flags, STATE_BOOTING,
+				  TASK_INTERRUPTIBLE,
+				  msecs_to_jiffies(1000));
+
+	if (err == 1) {
+		BT_ERR("%s: Device boot interrupted", hu->hdev->name);
+		return -EINTR;
+	}
+
+	if (err) {
+		BT_ERR("%s: Device boot timeout", hu->hdev->name);
+		return -ETIMEDOUT;
+	}
+
+	return err;
+}
+
+static int intel_set_power(struct hci_uart *hu, bool powered)
+{
+	struct list_head *p;
+	int err = -ENODEV;
+
+	spin_lock(&intel_device_list_lock);
+
+	list_for_each(p, &intel_device_list) {
+		struct intel_device *idev = list_entry(p, struct intel_device,
+						       list);
+
+		/* tty device and pdev device should share the same parent
+		 * which is the UART port.
+		 */
+		if (hu->tty->dev->parent != idev->pdev->dev.parent)
+			continue;
+
+		if (!idev->reset) {
+			err = -ENOTSUPP;
+			break;
+		}
+
+		BT_INFO("hu %p, Switching compatible pm device (%s) to %u",
+			hu, dev_name(&idev->pdev->dev), powered);
+
+		gpiod_set_value(idev->reset, powered);
+	}
+
+	spin_unlock(&intel_device_list_lock);
+
+	return err;
+}
+
 static int intel_open(struct hci_uart *hu)
 {
 	struct intel_data *intel;
@@ -58,6 +159,10 @@ static int intel_open(struct hci_uart *hu)
 	skb_queue_head_init(&intel->txq);
 
 	hu->priv = intel;
+
+	if (!intel_set_power(hu, true))
+		set_bit(STATE_BOOTING, &intel->flags);
+
 	return 0;
 }
 
@@ -67,6 +172,8 @@ static int intel_close(struct hci_uart *hu)
 
 	BT_DBG("hu %p", hu);
 
+	intel_set_power(hu, false);
+
 	skb_queue_purge(&intel->txq);
 	kfree_skb(intel->rx_skb);
 	kfree(intel);
@@ -111,6 +218,68 @@ static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
 	return hci_recv_frame(hdev, skb);
 }
 
+static int intel_set_baudrate(struct hci_uart *hu, unsigned int speed)
+{
+	struct intel_data *intel = hu->priv;
+	struct hci_dev *hdev = hu->hdev;
+	u8 speed_cmd[] = { 0x06, 0xfc, 0x01, 0x00 };
+	struct sk_buff *skb;
+	int err;
+
+	/* This can be the first command sent to the chip, check
+	 * that the controller is ready.
+	 */
+	err = intel_wait_booting(hu);
+
+	clear_bit(STATE_BOOTING, &intel->flags);
+
+	/* In case of timeout, try to continue anyway */
+	if (err && err != ETIMEDOUT)
+		return err;
+
+	BT_INFO("%s: Change controller speed to %d", hdev->name, speed);
+
+	speed_cmd[3] = intel_convert_speed(speed);
+	if (speed_cmd[3] == 0xff) {
+		BT_ERR("%s: Unsupported speed", hdev->name);
+		return -EINVAL;
+	}
+
+	/* Device will not accept speed change if Intel version has not been
+	 * previously requested.
+	 */
+	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));
+		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);
+		return -ENOMEM;
+	}
+
+	memcpy(skb_put(skb, sizeof(speed_cmd)), speed_cmd, sizeof(speed_cmd));
+	bt_cb(skb)->pkt_type = HCI_COMMAND_PKT;
+
+	hci_uart_set_flow_control(hu, true);
+
+	skb_queue_tail(&intel->txq, skb);
+	hci_uart_tx_wakeup(hu);
+
+	/* wait 100ms to change baudrate on controller side */
+	msleep(100);
+
+	hci_uart_set_baudrate(hu, speed);
+	hci_uart_set_flow_control(hu, false);
+
+	return 0;
+}
+
 static int intel_setup(struct hci_uart *hu)
 {
 	static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
@@ -126,6 +295,8 @@ static int intel_setup(struct hci_uart *hu)
 	u32 frag_len;
 	ktime_t calltime, delta, rettime;
 	unsigned long long duration;
+	unsigned int init_speed, oper_speed;
+	int speed_change = 0;
 	int err;
 
 	BT_DBG("%s", hdev->name);
@@ -134,6 +305,28 @@ static int intel_setup(struct hci_uart *hu)
 
 	calltime = ktime_get();
 
+	if (hu->init_speed)
+		init_speed = hu->init_speed;
+	else
+		init_speed = hu->proto->init_speed;
+
+	if (hu->oper_speed)
+		oper_speed = hu->oper_speed;
+	else
+		oper_speed = hu->proto->oper_speed;
+
+	if (oper_speed && init_speed && oper_speed != init_speed)
+		speed_change = 1;
+
+	/* Check that the controller is ready */
+	err = intel_wait_booting(hu);
+
+	clear_bit(STATE_BOOTING, &intel->flags);
+
+	/* In case of timeout, try to continue anyway */
+	if (err && err != ETIMEDOUT)
+		return err;
+
 	set_bit(STATE_BOOTLOADER, &intel->flags);
 
 	/* Read the Intel version information to determine if the device
@@ -416,6 +609,13 @@ done:
 	if (err < 0)
 		return err;
 
+	/* We need to restore the default speed before Intel reset */
+	if (speed_change) {
+		err = intel_set_baudrate(hu, init_speed);
+		if (err)
+			return err;
+	}
+
 	calltime = ktime_get();
 
 	set_bit(STATE_BOOTING, &intel->flags);
@@ -436,19 +636,11 @@ done:
 	 */
 	BT_INFO("%s: Waiting for device to boot", hdev->name);
 
-	err = wait_on_bit_timeout(&intel->flags, STATE_BOOTING,
-				  TASK_INTERRUPTIBLE,
-				  msecs_to_jiffies(1000));
-
-	if (err == 1) {
-		BT_ERR("%s: Device boot interrupted", hdev->name);
-		return -EINTR;
-	}
+	err = intel_wait_booting(hu);
+	if (err)
+		return err;
 
-	if (err) {
-		BT_ERR("%s: Device boot timeout", hdev->name);
-		return -ETIMEDOUT;
-	}
+	clear_bit(STATE_BOOTING, &intel->flags);
 
 	rettime = ktime_get();
 	delta = ktime_sub(rettime, calltime);
@@ -456,6 +648,19 @@ done:
 
 	BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
 
+	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_CMD_TIMEOUT);
+	if (IS_ERR(skb))
+		return PTR_ERR(skb);
+	kfree_skb(skb);
+
+	if (speed_change) {
+		err = intel_set_baudrate(hu, oper_speed);
+		if (err)
+			return err;
+	}
+
+	BT_INFO("%s: Setup complete", hdev->name);
+
 	clear_bit(STATE_BOOTLOADER, &intel->flags);
 
 	return 0;
@@ -467,7 +672,8 @@ static int intel_recv_event(struct hci_dev *hdev, struct sk_buff *skb)
 	struct intel_data *intel = hu->priv;
 	struct hci_event_hdr *hdr;
 
-	if (!test_bit(STATE_BOOTLOADER, &intel->flags))
+	if (!test_bit(STATE_BOOTLOADER, &intel->flags) &&
+	    !test_bit(STATE_BOOTING, &intel->flags))
 		goto recv;
 
 	hdr = (void *)skb->data;
@@ -572,21 +778,110 @@ static const struct hci_uart_proto intel_proto = {
 	.id		= HCI_UART_INTEL,
 	.name		= "Intel",
 	.init_speed	= 115200,
+	.oper_speed	= 3000000,
 	.open		= intel_open,
 	.close		= intel_close,
 	.flush		= intel_flush,
 	.setup		= intel_setup,
+	.set_baudrate	= intel_set_baudrate,
 	.recv		= intel_recv,
 	.enqueue	= intel_enqueue,
 	.dequeue	= intel_dequeue,
 };
 
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id intel_acpi_match[] = {
+	{ "INT33E1", 0 },
+	{ },
+};
+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
+
+static int intel_probe(struct platform_device *pdev)
+{
+	struct intel_device *idev;
+
+	idev = devm_kzalloc(&pdev->dev, sizeof(*idev), GFP_KERNEL);
+	if (!idev)
+		return -ENOMEM;
+
+	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)) {
+		dev_err(&pdev->dev, "Unable to retrieve gpio\n");
+		return PTR_ERR(idev->reset);
+	}
+
+	platform_set_drvdata(pdev, idev);
+
+	/* Place this instance on the device list */
+	spin_lock(&intel_device_list_lock);
+	list_add_tail(&idev->list, &intel_device_list);
+	spin_unlock(&intel_device_list_lock);
+
+	dev_info(&pdev->dev, "registered.\n");
+
+	return 0;
+}
+
+static int intel_remove(struct platform_device *pdev)
+{
+	struct intel_device *idev = platform_get_drvdata(pdev);
+
+	spin_lock(&intel_device_list_lock);
+	list_del(&idev->list);
+	spin_unlock(&intel_device_list_lock);
+
+	dev_info(&pdev->dev, "unregistered.\n");
+
+	return 0;
+}
+
+static struct platform_driver intel_driver = {
+	.probe = intel_probe,
+	.remove = intel_remove,
+	.driver = {
+		.name = "hci_intel",
+		.acpi_match_table = ACPI_PTR(intel_acpi_match),
+	},
+};
+
 int __init intel_init(void)
 {
+	platform_driver_register(&intel_driver);
+
 	return hci_uart_register_proto(&intel_proto);
 }
 
 int __exit intel_deinit(void)
 {
+	platform_driver_unregister(&intel_driver);
+
 	return hci_uart_unregister_proto(&intel_proto);
 }