ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/bluetooth/hci_bcm.c b/marvell/linux/drivers/bluetooth/hci_bcm.c
new file mode 100644
index 0000000..c6bb380
--- /dev/null
+++ b/marvell/linux/drivers/bluetooth/hci_bcm.c
@@ -0,0 +1,1466 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *
+ * Bluetooth HCI UART driver for Broadcom devices
+ *
+ * Copyright (C) 2015 Intel Corporation
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/skbuff.h>
+#include <linux/firmware.h>
+#include <linux/module.h>
+#include <linux/acpi.h>
+#include <linux/of.h>
+#include <linux/property.h>
+#include <linux/platform_data/x86/apple.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#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 <linux/serdev.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "btbcm.h"
+#include "hci_uart.h"
+
+#define BCM_NULL_PKT 0x00
+#define BCM_NULL_SIZE 0
+
+#define BCM_LM_DIAG_PKT 0x07
+#define BCM_LM_DIAG_SIZE 63
+
+#define BCM_TYPE49_PKT 0x31
+#define BCM_TYPE49_SIZE 0
+
+#define BCM_TYPE52_PKT 0x34
+#define BCM_TYPE52_SIZE 0
+
+#define BCM_AUTOSUSPEND_DELAY 5000 /* default autosleep delay */
+
+#define BCM_NUM_SUPPLIES 2
+
+/**
+ * struct bcm_device - device driver resources
+ * @serdev_hu: HCI UART controller struct
+ * @list: bcm_device_list node
+ * @dev: physical UART slave
+ * @name: device name logged by bt_dev_*() functions
+ * @device_wakeup: BT_WAKE pin,
+ * assert = Bluetooth device must wake up or remain awake,
+ * deassert = Bluetooth device may sleep when sleep criteria are met
+ * @shutdown: BT_REG_ON pin,
+ * power up or power down Bluetooth device internal regulators
+ * @set_device_wakeup: callback to toggle BT_WAKE pin
+ * either by accessing @device_wakeup or by calling @btlp
+ * @set_shutdown: callback to toggle BT_REG_ON pin
+ * either by accessing @shutdown or by calling @btpu/@btpd
+ * @btlp: Apple ACPI method to toggle BT_WAKE pin ("Bluetooth Low Power")
+ * @btpu: Apple ACPI method to drive BT_REG_ON pin high ("Bluetooth Power Up")
+ * @btpd: Apple ACPI method to drive BT_REG_ON pin low ("Bluetooth Power Down")
+ * @txco_clk: external reference frequency clock used by Bluetooth device
+ * @lpo_clk: external LPO clock used by Bluetooth device
+ * @supplies: VBAT and VDDIO supplies used by Bluetooth device
+ * @res_enabled: whether clocks and supplies are prepared and enabled
+ * @init_speed: default baudrate of Bluetooth device;
+ * the host UART is initially set to this baudrate so that
+ * it can configure the Bluetooth device for @oper_speed
+ * @oper_speed: preferred baudrate of Bluetooth device;
+ * set to 0 if @init_speed is already the preferred baudrate
+ * @irq: interrupt triggered by HOST_WAKE_BT pin
+ * @irq_active_low: whether @irq is active low
+ * @hu: pointer to HCI UART controller struct,
+ * used to disable flow control during runtime suspend and system sleep
+ * @is_suspended: whether flow control is currently disabled
+ */
+struct bcm_device {
+ /* Must be the first member, hci_serdev.c expects this. */
+ struct hci_uart serdev_hu;
+ struct list_head list;
+
+ struct device *dev;
+
+ const char *name;
+ struct gpio_desc *device_wakeup;
+ struct gpio_desc *shutdown;
+ int (*set_device_wakeup)(struct bcm_device *, bool);
+ int (*set_shutdown)(struct bcm_device *, bool);
+#ifdef CONFIG_ACPI
+ acpi_handle btlp, btpu, btpd;
+ int gpio_count;
+ int gpio_int_idx;
+#endif
+
+ struct clk *txco_clk;
+ struct clk *lpo_clk;
+ struct regulator_bulk_data supplies[BCM_NUM_SUPPLIES];
+ bool res_enabled;
+
+ u32 init_speed;
+ u32 oper_speed;
+ int irq;
+ bool irq_active_low;
+ bool irq_acquired;
+
+#ifdef CONFIG_PM
+ struct hci_uart *hu;
+ bool is_suspended;
+#endif
+};
+
+/* generic bcm uart resources */
+struct bcm_data {
+ struct sk_buff *rx_skb;
+ struct sk_buff_head txq;
+
+ struct bcm_device *dev;
+};
+
+/* List of BCM BT UART devices */
+static DEFINE_MUTEX(bcm_device_lock);
+static LIST_HEAD(bcm_device_list);
+
+static int irq_polarity = -1;
+module_param(irq_polarity, int, 0444);
+MODULE_PARM_DESC(irq_polarity, "IRQ polarity 0: active-high 1: active-low");
+
+static inline void host_set_baudrate(struct hci_uart *hu, unsigned int speed)
+{
+ if (hu->serdev)
+ serdev_device_set_baudrate(hu->serdev, speed);
+ else
+ hci_uart_set_baudrate(hu, speed);
+}
+
+static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed)
+{
+ struct hci_dev *hdev = hu->hdev;
+ struct sk_buff *skb;
+ struct bcm_update_uart_baud_rate param;
+
+ if (speed > 3000000) {
+ struct bcm_write_uart_clock_setting clock;
+
+ clock.type = BCM_UART_CLOCK_48MHZ;
+
+ bt_dev_dbg(hdev, "Set Controller clock (%d)", clock.type);
+
+ /* This Broadcom specific command changes the UART's controller
+ * clock for baud rate > 3000000.
+ */
+ skb = __hci_cmd_sync(hdev, 0xfc45, 1, &clock, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ int err = PTR_ERR(skb);
+ bt_dev_err(hdev, "BCM: failed to write clock (%d)",
+ err);
+ return err;
+ }
+
+ kfree_skb(skb);
+ }
+
+ 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);
+
+ /* This Broadcom specific command changes the UART's controller baud
+ * rate.
+ */
+ skb = __hci_cmd_sync(hdev, 0xfc18, sizeof(param), ¶m,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ int err = PTR_ERR(skb);
+ bt_dev_err(hdev, "BCM: failed to write update baudrate (%d)",
+ err);
+ return err;
+ }
+
+ kfree_skb(skb);
+
+ return 0;
+}
+
+/* bcm_device_exists should be protected by bcm_device_lock */
+static bool bcm_device_exists(struct bcm_device *device)
+{
+ struct list_head *p;
+
+#ifdef CONFIG_PM
+ /* Devices using serdev always exist */
+ if (device && device->hu && device->hu->serdev)
+ return true;
+#endif
+
+ list_for_each(p, &bcm_device_list) {
+ struct bcm_device *dev = list_entry(p, struct bcm_device, list);
+
+ if (device == dev)
+ return true;
+ }
+
+ return false;
+}
+
+static int bcm_gpio_set_power(struct bcm_device *dev, bool powered)
+{
+ int err;
+
+ if (powered && !dev->res_enabled) {
+ /* Intel Macs use bcm_apple_get_resources() and don't
+ * have regulator supplies configured.
+ */
+ if (dev->supplies[0].supply) {
+ err = regulator_bulk_enable(BCM_NUM_SUPPLIES,
+ dev->supplies);
+ if (err)
+ return err;
+ }
+
+ /* LPO clock needs to be 32.768 kHz */
+ err = clk_set_rate(dev->lpo_clk, 32768);
+ if (err) {
+ dev_err(dev->dev, "Could not set LPO clock rate\n");
+ goto err_regulator_disable;
+ }
+
+ err = clk_prepare_enable(dev->lpo_clk);
+ if (err)
+ goto err_regulator_disable;
+
+ err = clk_prepare_enable(dev->txco_clk);
+ if (err)
+ goto err_lpo_clk_disable;
+ }
+
+ err = dev->set_shutdown(dev, powered);
+ if (err)
+ goto err_txco_clk_disable;
+
+ err = dev->set_device_wakeup(dev, powered);
+ if (err)
+ goto err_revert_shutdown;
+
+ if (!powered && dev->res_enabled) {
+ clk_disable_unprepare(dev->txco_clk);
+ clk_disable_unprepare(dev->lpo_clk);
+
+ /* Intel Macs use bcm_apple_get_resources() and don't
+ * have regulator supplies configured.
+ */
+ if (dev->supplies[0].supply)
+ regulator_bulk_disable(BCM_NUM_SUPPLIES,
+ dev->supplies);
+ }
+
+ /* wait for device to power on and come out of reset */
+ usleep_range(100000, 120000);
+
+ dev->res_enabled = powered;
+
+ return 0;
+
+err_revert_shutdown:
+ dev->set_shutdown(dev, !powered);
+err_txco_clk_disable:
+ if (powered && !dev->res_enabled)
+ clk_disable_unprepare(dev->txco_clk);
+err_lpo_clk_disable:
+ if (powered && !dev->res_enabled)
+ clk_disable_unprepare(dev->lpo_clk);
+err_regulator_disable:
+ if (powered && !dev->res_enabled)
+ regulator_bulk_disable(BCM_NUM_SUPPLIES, dev->supplies);
+ return err;
+}
+
+#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->dev);
+ pm_runtime_mark_last_busy(bdev->dev);
+ pm_runtime_put_autosuspend(bdev->dev);
+
+ return IRQ_HANDLED;
+}
+
+static int bcm_request_irq(struct bcm_data *bcm)
+{
+ struct bcm_device *bdev = bcm->dev;
+ int err;
+
+ mutex_lock(&bcm_device_lock);
+ if (!bcm_device_exists(bdev)) {
+ err = -ENODEV;
+ goto unlock;
+ }
+
+ if (bdev->irq <= 0) {
+ err = -EOPNOTSUPP;
+ goto unlock;
+ }
+
+ err = devm_request_irq(bdev->dev, bdev->irq, bcm_host_wake,
+ bdev->irq_active_low ? IRQF_TRIGGER_FALLING :
+ IRQF_TRIGGER_RISING,
+ "host_wake", bdev);
+ if (err) {
+ bdev->irq = err;
+ goto unlock;
+ }
+
+ bdev->irq_acquired = true;
+
+ device_init_wakeup(bdev->dev, true);
+
+ pm_runtime_set_autosuspend_delay(bdev->dev,
+ BCM_AUTOSUSPEND_DELAY);
+ pm_runtime_use_autosuspend(bdev->dev);
+ pm_runtime_set_active(bdev->dev);
+ pm_runtime_enable(bdev->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,
+ .break_to_host = 0,
+ .pulsed_host_wake = 1,
+};
+
+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_active_low;
+
+ 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_u8(skb, BCM_LM_DIAG_PKT);
+ skb_put_u8(skb, 0xf0);
+ skb_put_u8(skb, 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;
+ int err;
+
+ bt_dev_dbg(hu->hdev, "hu %p", hu);
+
+ if (!hci_uart_has_flow_control(hu))
+ return -EOPNOTSUPP;
+
+ bcm = kzalloc(sizeof(*bcm), GFP_KERNEL);
+ if (!bcm)
+ return -ENOMEM;
+
+ skb_queue_head_init(&bcm->txq);
+
+ hu->priv = bcm;
+
+ mutex_lock(&bcm_device_lock);
+
+ if (hu->serdev) {
+ bcm->dev = serdev_device_get_drvdata(hu->serdev);
+ goto out;
+ }
+
+ if (!hu->tty->dev)
+ goto out;
+
+ list_for_each(p, &bcm_device_list) {
+ struct bcm_device *dev = list_entry(p, struct bcm_device, list);
+
+ /* Retrieve saved bcm_device based on parent of the
+ * platform device (saved during device probe) and
+ * parent of tty device used by hci_uart
+ */
+ if (hu->tty->dev->parent == dev->dev->parent) {
+ bcm->dev = dev;
+#ifdef CONFIG_PM
+ dev->hu = hu;
+#endif
+ break;
+ }
+ }
+
+out:
+ if (bcm->dev) {
+ hu->init_speed = bcm->dev->init_speed;
+ hu->oper_speed = bcm->dev->oper_speed;
+ err = bcm_gpio_set_power(bcm->dev, true);
+ if (err)
+ goto err_unset_hu;
+ }
+
+ mutex_unlock(&bcm_device_lock);
+ return 0;
+
+err_unset_hu:
+#ifdef CONFIG_PM
+ if (!hu->serdev)
+ bcm->dev->hu = NULL;
+#endif
+ mutex_unlock(&bcm_device_lock);
+ hu->priv = NULL;
+ kfree(bcm);
+ return err;
+}
+
+static int bcm_close(struct hci_uart *hu)
+{
+ struct bcm_data *bcm = hu->priv;
+ struct bcm_device *bdev = NULL;
+ int err;
+
+ bt_dev_dbg(hu->hdev, "hu %p", hu);
+
+ /* Protect bcm->dev against removal of the device or driver */
+ mutex_lock(&bcm_device_lock);
+
+ if (hu->serdev) {
+ bdev = serdev_device_get_drvdata(hu->serdev);
+ } else if (bcm_device_exists(bcm->dev)) {
+ bdev = bcm->dev;
+#ifdef CONFIG_PM
+ bdev->hu = NULL;
+#endif
+ }
+
+ if (bdev) {
+ if (IS_ENABLED(CONFIG_PM) && bdev->irq_acquired) {
+ devm_free_irq(bdev->dev, bdev->irq, bdev);
+ device_init_wakeup(bdev->dev, false);
+ pm_runtime_disable(bdev->dev);
+ }
+
+ err = bcm_gpio_set_power(bdev, false);
+ if (err)
+ bt_dev_err(hu->hdev, "Failed to power down");
+ else
+ pm_runtime_set_suspended(bdev->dev);
+ }
+ mutex_unlock(&bcm_device_lock);
+
+ skb_queue_purge(&bcm->txq);
+ kfree_skb(bcm->rx_skb);
+ kfree(bcm);
+
+ hu->priv = NULL;
+ return 0;
+}
+
+static int bcm_flush(struct hci_uart *hu)
+{
+ struct bcm_data *bcm = hu->priv;
+
+ bt_dev_dbg(hu->hdev, "hu %p", hu);
+
+ skb_queue_purge(&bcm->txq);
+
+ return 0;
+}
+
+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_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), false);
+ if (err)
+ return err;
+
+ err = request_firmware(&fw, fw_name, &hu->hdev->dev);
+ if (err < 0) {
+ bt_dev_info(hu->hdev, "BCM: Patch %s not found", fw_name);
+ return 0;
+ }
+
+ err = btbcm_patchram(hu->hdev, fw);
+ if (err) {
+ bt_dev_info(hu->hdev, "BCM: Patch failed (%d)", err);
+ goto finalize;
+ }
+
+ /* Init speed if any */
+ if (hu->init_speed)
+ speed = hu->init_speed;
+ else if (hu->proto->init_speed)
+ speed = hu->proto->init_speed;
+ else
+ speed = 0;
+
+ if (speed)
+ host_set_baudrate(hu, speed);
+
+ /* Operational speed if any */
+ if (hu->oper_speed)
+ speed = hu->oper_speed;
+ else if (hu->proto->oper_speed)
+ speed = hu->proto->oper_speed;
+ else
+ speed = 0;
+
+ if (speed) {
+ err = bcm_set_baudrate(hu, speed);
+ if (!err)
+ host_set_baudrate(hu, speed);
+ }
+
+finalize:
+ release_firmware(fw);
+
+ err = btbcm_finalize(hu->hdev);
+ if (err)
+ return err;
+
+ if (!bcm_request_irq(bcm))
+ 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
+
+#define BCM_RECV_NULL \
+ .type = BCM_NULL_PKT, \
+ .hlen = BCM_NULL_SIZE, \
+ .loff = 0, \
+ .lsize = 0, \
+ .maxlen = BCM_NULL_SIZE
+
+#define BCM_RECV_TYPE49 \
+ .type = BCM_TYPE49_PKT, \
+ .hlen = BCM_TYPE49_SIZE, \
+ .loff = 0, \
+ .lsize = 0, \
+ .maxlen = BCM_TYPE49_SIZE
+
+#define BCM_RECV_TYPE52 \
+ .type = BCM_TYPE52_PKT, \
+ .hlen = BCM_TYPE52_SIZE, \
+ .loff = 0, \
+ .lsize = 0, \
+ .maxlen = BCM_TYPE52_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 },
+ { BCM_RECV_LM_DIAG, .recv = hci_recv_diag },
+ { BCM_RECV_NULL, .recv = hci_recv_diag },
+ { BCM_RECV_TYPE49, .recv = hci_recv_diag },
+ { BCM_RECV_TYPE52, .recv = hci_recv_diag },
+};
+
+static int bcm_recv(struct hci_uart *hu, const void *data, int count)
+{
+ struct bcm_data *bcm = hu->priv;
+
+ if (!test_bit(HCI_UART_REGISTERED, &hu->flags))
+ return -EUNATCH;
+
+ bcm->rx_skb = h4_recv_buf(hu->hdev, bcm->rx_skb, data, count,
+ bcm_recv_pkts, ARRAY_SIZE(bcm_recv_pkts));
+ if (IS_ERR(bcm->rx_skb)) {
+ int err = PTR_ERR(bcm->rx_skb);
+ 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->dev);
+ pm_runtime_mark_last_busy(bcm->dev->dev);
+ pm_runtime_put_autosuspend(bcm->dev->dev);
+ }
+ mutex_unlock(&bcm_device_lock);
+ }
+
+ return count;
+}
+
+static int bcm_enqueue(struct hci_uart *hu, struct sk_buff *skb)
+{
+ struct bcm_data *bcm = hu->priv;
+
+ bt_dev_dbg(hu->hdev, "hu %p skb %p", hu, skb);
+
+ /* Prepend skb with frame type */
+ memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
+ skb_queue_tail(&bcm->txq, skb);
+
+ return 0;
+}
+
+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->dev);
+ /* Shall be resumed here */
+ }
+
+ skb = skb_dequeue(&bcm->txq);
+
+ if (bdev) {
+ pm_runtime_mark_last_busy(bdev->dev);
+ pm_runtime_put_autosuspend(bdev->dev);
+ }
+
+ mutex_unlock(&bcm_device_lock);
+
+ return skb;
+}
+
+#ifdef CONFIG_PM
+static int bcm_suspend_device(struct device *dev)
+{
+ struct bcm_device *bdev = dev_get_drvdata(dev);
+ int err;
+
+ bt_dev_dbg(bdev, "");
+
+ if (!bdev->is_suspended && bdev->hu) {
+ hci_uart_set_flow_control(bdev->hu, true);
+
+ /* Once this returns, driver suspends BT via GPIO */
+ bdev->is_suspended = true;
+ }
+
+ /* Suspend the device */
+ err = bdev->set_device_wakeup(bdev, false);
+ if (err) {
+ if (bdev->is_suspended && bdev->hu) {
+ bdev->is_suspended = false;
+ hci_uart_set_flow_control(bdev->hu, false);
+ }
+ return -EBUSY;
+ }
+
+ bt_dev_dbg(bdev, "suspend, delaying 15 ms");
+ msleep(15);
+
+ return 0;
+}
+
+static int bcm_resume_device(struct device *dev)
+{
+ struct bcm_device *bdev = dev_get_drvdata(dev);
+ int err;
+
+ bt_dev_dbg(bdev, "");
+
+ err = bdev->set_device_wakeup(bdev, true);
+ if (err) {
+ dev_err(dev, "Failed to power up\n");
+ return err;
+ }
+
+ bt_dev_dbg(bdev, "resume, delaying 15 ms");
+ msleep(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
+/* suspend callback */
+static int bcm_suspend(struct device *dev)
+{
+ struct bcm_device *bdev = dev_get_drvdata(dev);
+ int error;
+
+ bt_dev_dbg(bdev, "suspend: is_suspended %d", bdev->is_suspended);
+
+ /*
+ * When used with a device instantiated as platform_device, bcm_suspend
+ * can be called at any time as long as the 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(dev) && bdev->irq > 0) {
+ error = enable_irq_wake(bdev->irq);
+ if (!error)
+ bt_dev_dbg(bdev, "BCM irq: enabled");
+ }
+
+unlock:
+ mutex_unlock(&bcm_device_lock);
+
+ return 0;
+}
+
+/* resume callback */
+static int bcm_resume(struct device *dev)
+{
+ struct bcm_device *bdev = dev_get_drvdata(dev);
+ int err = 0;
+
+ bt_dev_dbg(bdev, "resume: is_suspended %d", bdev->is_suspended);
+
+ /*
+ * When used with a device instantiated as platform_device, 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 (device_may_wakeup(dev) && bdev->irq > 0) {
+ disable_irq_wake(bdev->irq);
+ bt_dev_dbg(bdev, "BCM irq: disabled");
+ }
+
+ err = bcm_resume_device(dev);
+
+unlock:
+ mutex_unlock(&bcm_device_lock);
+
+ if (!err) {
+ pm_runtime_disable(dev);
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ }
+
+ return 0;
+}
+#endif
+
+/* Some firmware reports an IRQ which does not work (wrong pin in fw table?) */
+static const struct dmi_system_id bcm_broken_irq_dmi_table[] = {
+ {
+ .ident = "Meegopad T08",
+ .matches = {
+ DMI_EXACT_MATCH(DMI_BOARD_VENDOR,
+ "To be filled by OEM."),
+ DMI_EXACT_MATCH(DMI_BOARD_NAME, "T3 MRD"),
+ DMI_EXACT_MATCH(DMI_BOARD_VERSION, "V1.1"),
+ },
+ },
+ { }
+};
+
+#ifdef CONFIG_ACPI
+static const struct acpi_gpio_params first_gpio = { 0, 0, false };
+static const struct acpi_gpio_params second_gpio = { 1, 0, false };
+static const struct acpi_gpio_params third_gpio = { 2, 0, false };
+
+static const struct acpi_gpio_mapping acpi_bcm_int_last_gpios[] = {
+ { "device-wakeup-gpios", &first_gpio, 1 },
+ { "shutdown-gpios", &second_gpio, 1 },
+ { "host-wakeup-gpios", &third_gpio, 1 },
+ { },
+};
+
+static const struct acpi_gpio_mapping acpi_bcm_int_first_gpios[] = {
+ { "host-wakeup-gpios", &first_gpio, 1 },
+ { "device-wakeup-gpios", &second_gpio, 1 },
+ { "shutdown-gpios", &third_gpio, 1 },
+ { },
+};
+
+static int bcm_resource(struct acpi_resource *ares, void *data)
+{
+ struct bcm_device *dev = data;
+ 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;
+ if (irq->polarity != ACPI_ACTIVE_LOW)
+ dev_info(dev->dev, "ACPI Interrupt resource is active-high, this is usually wrong, treating the IRQ as active-low\n");
+ dev->irq_active_low = true;
+ break;
+
+ case ACPI_RESOURCE_TYPE_GPIO:
+ gpio = &ares->data.gpio;
+ if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT) {
+ dev->gpio_int_idx = dev->gpio_count;
+ dev->irq_active_low = gpio->polarity == ACPI_ACTIVE_LOW;
+ }
+ dev->gpio_count++;
+ 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;
+ dev->oper_speed = 4000000;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int bcm_apple_set_device_wakeup(struct bcm_device *dev, bool awake)
+{
+ if (ACPI_FAILURE(acpi_execute_simple_method(dev->btlp, NULL, !awake)))
+ return -EIO;
+
+ return 0;
+}
+
+static int bcm_apple_set_shutdown(struct bcm_device *dev, bool powered)
+{
+ if (ACPI_FAILURE(acpi_evaluate_object(powered ? dev->btpu : dev->btpd,
+ NULL, NULL, NULL)))
+ return -EIO;
+
+ return 0;
+}
+
+static int bcm_apple_get_resources(struct bcm_device *dev)
+{
+ struct acpi_device *adev = ACPI_COMPANION(dev->dev);
+ const union acpi_object *obj;
+
+ if (!adev ||
+ ACPI_FAILURE(acpi_get_handle(adev->handle, "BTLP", &dev->btlp)) ||
+ ACPI_FAILURE(acpi_get_handle(adev->handle, "BTPU", &dev->btpu)) ||
+ ACPI_FAILURE(acpi_get_handle(adev->handle, "BTPD", &dev->btpd)))
+ return -ENODEV;
+
+ if (!acpi_dev_get_property(adev, "baud", ACPI_TYPE_BUFFER, &obj) &&
+ obj->buffer.length == 8)
+ dev->init_speed = *(u64 *)obj->buffer.pointer;
+
+ dev->set_device_wakeup = bcm_apple_set_device_wakeup;
+ dev->set_shutdown = bcm_apple_set_shutdown;
+
+ return 0;
+}
+#else
+static inline int bcm_apple_get_resources(struct bcm_device *dev)
+{
+ return -EOPNOTSUPP;
+}
+#endif /* CONFIG_ACPI */
+
+static int bcm_gpio_set_device_wakeup(struct bcm_device *dev, bool awake)
+{
+ gpiod_set_value_cansleep(dev->device_wakeup, awake);
+ return 0;
+}
+
+static int bcm_gpio_set_shutdown(struct bcm_device *dev, bool powered)
+{
+ gpiod_set_value_cansleep(dev->shutdown, powered);
+ return 0;
+}
+
+/* Try a bunch of names for TXCO */
+static struct clk *bcm_get_txco(struct device *dev)
+{
+ struct clk *clk;
+
+ /* New explicit name */
+ clk = devm_clk_get(dev, "txco");
+ if (!IS_ERR(clk) || PTR_ERR(clk) == -EPROBE_DEFER)
+ return clk;
+
+ /* Deprecated name */
+ clk = devm_clk_get(dev, "extclk");
+ if (!IS_ERR(clk) || PTR_ERR(clk) == -EPROBE_DEFER)
+ return clk;
+
+ /* Original code used no name at all */
+ return devm_clk_get(dev, NULL);
+}
+
+static int bcm_get_resources(struct bcm_device *dev)
+{
+ const struct dmi_system_id *dmi_id;
+ int err;
+
+ dev->name = dev_name(dev->dev);
+
+ if (x86_apple_machine && !bcm_apple_get_resources(dev))
+ return 0;
+
+ dev->txco_clk = bcm_get_txco(dev->dev);
+
+ /* Handle deferred probing */
+ if (dev->txco_clk == ERR_PTR(-EPROBE_DEFER))
+ return PTR_ERR(dev->txco_clk);
+
+ /* Ignore all other errors as before */
+ if (IS_ERR(dev->txco_clk))
+ dev->txco_clk = NULL;
+
+ dev->lpo_clk = devm_clk_get(dev->dev, "lpo");
+ if (dev->lpo_clk == ERR_PTR(-EPROBE_DEFER))
+ return PTR_ERR(dev->lpo_clk);
+
+ if (IS_ERR(dev->lpo_clk))
+ dev->lpo_clk = NULL;
+
+ /* Check if we accidentally fetched the lpo clock twice */
+ if (dev->lpo_clk && clk_is_match(dev->lpo_clk, dev->txco_clk)) {
+ devm_clk_put(dev->dev, dev->txco_clk);
+ dev->txco_clk = NULL;
+ }
+
+ dev->device_wakeup = devm_gpiod_get_optional(dev->dev, "device-wakeup",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(dev->device_wakeup))
+ return PTR_ERR(dev->device_wakeup);
+
+ dev->shutdown = devm_gpiod_get_optional(dev->dev, "shutdown",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(dev->shutdown))
+ return PTR_ERR(dev->shutdown);
+
+ dev->set_device_wakeup = bcm_gpio_set_device_wakeup;
+ dev->set_shutdown = bcm_gpio_set_shutdown;
+
+ dev->supplies[0].supply = "vbat";
+ dev->supplies[1].supply = "vddio";
+ err = devm_regulator_bulk_get(dev->dev, BCM_NUM_SUPPLIES,
+ dev->supplies);
+ if (err)
+ return err;
+
+ /* IRQ can be declared in ACPI table as Interrupt or GpioInt */
+ if (dev->irq <= 0) {
+ struct gpio_desc *gpio;
+
+ gpio = devm_gpiod_get_optional(dev->dev, "host-wakeup",
+ GPIOD_IN);
+ if (IS_ERR(gpio))
+ return PTR_ERR(gpio);
+
+ dev->irq = gpiod_to_irq(gpio);
+ }
+
+ dmi_id = dmi_first_match(bcm_broken_irq_dmi_table);
+ if (dmi_id) {
+ dev_info(dev->dev, "%s: Has a broken IRQ config, disabling IRQ support / runtime-pm\n",
+ dmi_id->ident);
+ dev->irq = 0;
+ }
+
+ dev_dbg(dev->dev, "BCM irq: %d\n", dev->irq);
+ return 0;
+}
+
+#ifdef CONFIG_ACPI
+static int bcm_acpi_probe(struct bcm_device *dev)
+{
+ LIST_HEAD(resources);
+ const struct acpi_gpio_mapping *gpio_mapping = acpi_bcm_int_last_gpios;
+ struct resource_entry *entry;
+ int ret;
+
+ /* Retrieve UART ACPI info */
+ dev->gpio_int_idx = -1;
+ ret = acpi_dev_get_resources(ACPI_COMPANION(dev->dev),
+ &resources, bcm_resource, dev);
+ if (ret < 0)
+ return ret;
+
+ resource_list_for_each_entry(entry, &resources) {
+ if (resource_type(entry->res) == IORESOURCE_IRQ) {
+ dev->irq = entry->res->start;
+ break;
+ }
+ }
+ acpi_dev_free_resource_list(&resources);
+
+ /* If the DSDT uses an Interrupt resource for the IRQ, then there are
+ * only 2 GPIO resources, we use the irq-last mapping for this, since
+ * we already have an irq the 3th / last mapping will not be used.
+ */
+ if (dev->irq)
+ gpio_mapping = acpi_bcm_int_last_gpios;
+ else if (dev->gpio_int_idx == 0)
+ gpio_mapping = acpi_bcm_int_first_gpios;
+ else if (dev->gpio_int_idx == 2)
+ gpio_mapping = acpi_bcm_int_last_gpios;
+ else
+ dev_warn(dev->dev, "Unexpected ACPI gpio_int_idx: %d\n",
+ dev->gpio_int_idx);
+
+ /* Warn if our expectations are not met. */
+ if (dev->gpio_count != (dev->irq ? 2 : 3))
+ dev_warn(dev->dev, "Unexpected number of ACPI GPIOs: %d\n",
+ dev->gpio_count);
+
+ ret = devm_acpi_dev_add_driver_gpios(dev->dev, gpio_mapping);
+ if (ret)
+ return ret;
+
+ if (irq_polarity != -1) {
+ dev->irq_active_low = irq_polarity;
+ dev_warn(dev->dev, "Overwriting IRQ polarity to active %s by module-param\n",
+ dev->irq_active_low ? "low" : "high");
+ }
+
+ return 0;
+}
+#else
+static int bcm_acpi_probe(struct bcm_device *dev)
+{
+ return -EINVAL;
+}
+#endif /* CONFIG_ACPI */
+
+static int bcm_of_probe(struct bcm_device *bdev)
+{
+ device_property_read_u32(bdev->dev, "max-speed", &bdev->oper_speed);
+ return 0;
+}
+
+static int bcm_probe(struct platform_device *pdev)
+{
+ struct bcm_device *dev;
+ int ret;
+
+ dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+
+ dev->dev = &pdev->dev;
+
+ ret = platform_get_irq(pdev, 0);
+ if (ret < 0)
+ return ret;
+
+ dev->irq = ret;
+
+ if (has_acpi_companion(&pdev->dev)) {
+ ret = bcm_acpi_probe(dev);
+ if (ret)
+ return ret;
+ }
+
+ ret = bcm_get_resources(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 */
+ mutex_lock(&bcm_device_lock);
+ list_add_tail(&dev->list, &bcm_device_list);
+ mutex_unlock(&bcm_device_lock);
+
+ ret = bcm_gpio_set_power(dev, false);
+ if (ret)
+ dev_err(&pdev->dev, "Failed to power down\n");
+
+ return 0;
+}
+
+static int bcm_remove(struct platform_device *pdev)
+{
+ struct bcm_device *dev = platform_get_drvdata(pdev);
+
+ mutex_lock(&bcm_device_lock);
+ list_del(&dev->list);
+ mutex_unlock(&bcm_device_lock);
+
+ dev_info(&pdev->dev, "%s device unregistered.\n", dev->name);
+
+ return 0;
+}
+
+static const struct hci_uart_proto bcm_proto = {
+ .id = HCI_UART_BCM,
+ .name = "Broadcom",
+ .manufacturer = 15,
+ .init_speed = 115200,
+ .open = bcm_open,
+ .close = bcm_close,
+ .flush = bcm_flush,
+ .setup = bcm_setup,
+ .set_baudrate = bcm_set_baudrate,
+ .recv = bcm_recv,
+ .enqueue = bcm_enqueue,
+ .dequeue = bcm_dequeue,
+};
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id bcm_acpi_match[] = {
+ { "BCM2E00" },
+ { "BCM2E01" },
+ { "BCM2E02" },
+ { "BCM2E03" },
+ { "BCM2E04" },
+ { "BCM2E05" },
+ { "BCM2E06" },
+ { "BCM2E07" },
+ { "BCM2E08" },
+ { "BCM2E09" },
+ { "BCM2E0A" },
+ { "BCM2E0B" },
+ { "BCM2E0C" },
+ { "BCM2E0D" },
+ { "BCM2E0E" },
+ { "BCM2E0F" },
+ { "BCM2E10" },
+ { "BCM2E11" },
+ { "BCM2E12" },
+ { "BCM2E13" },
+ { "BCM2E14" },
+ { "BCM2E15" },
+ { "BCM2E16" },
+ { "BCM2E17" },
+ { "BCM2E18" },
+ { "BCM2E19" },
+ { "BCM2E1A" },
+ { "BCM2E1B" },
+ { "BCM2E1C" },
+ { "BCM2E1D" },
+ { "BCM2E1F" },
+ { "BCM2E20" },
+ { "BCM2E21" },
+ { "BCM2E22" },
+ { "BCM2E23" },
+ { "BCM2E24" },
+ { "BCM2E25" },
+ { "BCM2E26" },
+ { "BCM2E27" },
+ { "BCM2E28" },
+ { "BCM2E29" },
+ { "BCM2E2A" },
+ { "BCM2E2B" },
+ { "BCM2E2C" },
+ { "BCM2E2D" },
+ { "BCM2E2E" },
+ { "BCM2E2F" },
+ { "BCM2E30" },
+ { "BCM2E31" },
+ { "BCM2E32" },
+ { "BCM2E33" },
+ { "BCM2E34" },
+ { "BCM2E35" },
+ { "BCM2E36" },
+ { "BCM2E37" },
+ { "BCM2E38" },
+ { "BCM2E39" },
+ { "BCM2E3A" },
+ { "BCM2E3B" },
+ { "BCM2E3C" },
+ { "BCM2E3D" },
+ { "BCM2E3E" },
+ { "BCM2E3F" },
+ { "BCM2E40" },
+ { "BCM2E41" },
+ { "BCM2E42" },
+ { "BCM2E43" },
+ { "BCM2E44" },
+ { "BCM2E45" },
+ { "BCM2E46" },
+ { "BCM2E47" },
+ { "BCM2E48" },
+ { "BCM2E49" },
+ { "BCM2E4A" },
+ { "BCM2E4B" },
+ { "BCM2E4C" },
+ { "BCM2E4D" },
+ { "BCM2E4E" },
+ { "BCM2E4F" },
+ { "BCM2E50" },
+ { "BCM2E51" },
+ { "BCM2E52" },
+ { "BCM2E53" },
+ { "BCM2E54" },
+ { "BCM2E55" },
+ { "BCM2E56" },
+ { "BCM2E57" },
+ { "BCM2E58" },
+ { "BCM2E59" },
+ { "BCM2E5A" },
+ { "BCM2E5B" },
+ { "BCM2E5C" },
+ { "BCM2E5D" },
+ { "BCM2E5E" },
+ { "BCM2E5F" },
+ { "BCM2E60" },
+ { "BCM2E61" },
+ { "BCM2E62" },
+ { "BCM2E63" },
+ { "BCM2E64" },
+ { "BCM2E65" },
+ { "BCM2E66" },
+ { "BCM2E67" },
+ { "BCM2E68" },
+ { "BCM2E69" },
+ { "BCM2E6B" },
+ { "BCM2E6D" },
+ { "BCM2E6E" },
+ { "BCM2E6F" },
+ { "BCM2E70" },
+ { "BCM2E71" },
+ { "BCM2E72" },
+ { "BCM2E73" },
+ { "BCM2E74" },
+ { "BCM2E75" },
+ { "BCM2E76" },
+ { "BCM2E77" },
+ { "BCM2E78" },
+ { "BCM2E79" },
+ { "BCM2E7A" },
+ { "BCM2E7B" },
+ { "BCM2E7C" },
+ { "BCM2E7D" },
+ { "BCM2E7E" },
+ { "BCM2E7F" },
+ { "BCM2E80" },
+ { "BCM2E81" },
+ { "BCM2E82" },
+ { "BCM2E83" },
+ { "BCM2E84" },
+ { "BCM2E85" },
+ { "BCM2E86" },
+ { "BCM2E87" },
+ { "BCM2E88" },
+ { "BCM2E89" },
+ { "BCM2E8A" },
+ { "BCM2E8B" },
+ { "BCM2E8C" },
+ { "BCM2E8D" },
+ { "BCM2E8E" },
+ { "BCM2E90" },
+ { "BCM2E92" },
+ { "BCM2E93" },
+ { "BCM2E94" },
+ { "BCM2E95" },
+ { "BCM2E96" },
+ { "BCM2E97" },
+ { "BCM2E98" },
+ { "BCM2E99" },
+ { "BCM2E9A" },
+ { "BCM2E9B" },
+ { "BCM2E9C" },
+ { "BCM2E9D" },
+ { "BCM2EA0" },
+ { "BCM2EA1" },
+ { "BCM2EA2" },
+ { "BCM2EA3" },
+ { "BCM2EA4" },
+ { "BCM2EA5" },
+ { "BCM2EA6" },
+ { "BCM2EA7" },
+ { "BCM2EA8" },
+ { "BCM2EA9" },
+ { "BCM2EAA" },
+ { "BCM2EAB" },
+ { "BCM2EAC" },
+ { },
+};
+MODULE_DEVICE_TABLE(acpi, bcm_acpi_match);
+#endif
+
+/* suspend and resume callbacks */
+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,
+ .remove = bcm_remove,
+ .driver = {
+ .name = "hci_bcm",
+ .acpi_match_table = ACPI_PTR(bcm_acpi_match),
+ .pm = &bcm_pm_ops,
+ },
+};
+
+static int bcm_serdev_probe(struct serdev_device *serdev)
+{
+ struct bcm_device *bcmdev;
+ int err;
+
+ bcmdev = devm_kzalloc(&serdev->dev, sizeof(*bcmdev), GFP_KERNEL);
+ if (!bcmdev)
+ return -ENOMEM;
+
+ bcmdev->dev = &serdev->dev;
+#ifdef CONFIG_PM
+ bcmdev->hu = &bcmdev->serdev_hu;
+#endif
+ bcmdev->serdev_hu.serdev = serdev;
+ serdev_device_set_drvdata(serdev, bcmdev);
+
+ if (has_acpi_companion(&serdev->dev))
+ err = bcm_acpi_probe(bcmdev);
+ else
+ err = bcm_of_probe(bcmdev);
+ if (err)
+ return err;
+
+ err = bcm_get_resources(bcmdev);
+ if (err)
+ return err;
+
+ if (!bcmdev->shutdown) {
+ dev_warn(&serdev->dev,
+ "No reset resource, using default baud rate\n");
+ bcmdev->oper_speed = bcmdev->init_speed;
+ }
+
+ err = bcm_gpio_set_power(bcmdev, false);
+ if (err)
+ dev_err(&serdev->dev, "Failed to power down\n");
+
+ return hci_uart_register_device(&bcmdev->serdev_hu, &bcm_proto);
+}
+
+static void bcm_serdev_remove(struct serdev_device *serdev)
+{
+ struct bcm_device *bcmdev = serdev_device_get_drvdata(serdev);
+
+ hci_uart_unregister_device(&bcmdev->serdev_hu);
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id bcm_bluetooth_of_match[] = {
+ { .compatible = "brcm,bcm20702a1" },
+ { .compatible = "brcm,bcm4345c5" },
+ { .compatible = "brcm,bcm4330-bt" },
+ { .compatible = "brcm,bcm43438-bt" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, bcm_bluetooth_of_match);
+#endif
+
+static struct serdev_device_driver bcm_serdev_driver = {
+ .probe = bcm_serdev_probe,
+ .remove = bcm_serdev_remove,
+ .driver = {
+ .name = "hci_uart_bcm",
+ .of_match_table = of_match_ptr(bcm_bluetooth_of_match),
+ .acpi_match_table = ACPI_PTR(bcm_acpi_match),
+ .pm = &bcm_pm_ops,
+ },
+};
+
+int __init bcm_init(void)
+{
+ /* For now, we need to keep both platform device
+ * driver (ACPI generated) and serdev driver (DT).
+ */
+ platform_driver_register(&bcm_driver);
+ serdev_device_driver_register(&bcm_serdev_driver);
+
+ return hci_uart_register_proto(&bcm_proto);
+}
+
+int __exit bcm_deinit(void)
+{
+ platform_driver_unregister(&bcm_driver);
+ serdev_device_driver_unregister(&bcm_serdev_driver);
+
+ return hci_uart_unregister_proto(&bcm_proto);
+}