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![Johan Hovold](/assets/img/avatar_default.png)
A recent commit restored the original (and still documented) semantics
for the HCI_QUIRK_USE_BDADDR_PROPERTY quirk so that the device address
is considered invalid unless an address is provided by firmware.
This specifically means that this flag must only be set for devices with
invalid addresses, but the Broadcom driver has so far been setting this
flag unconditionally.
Fortunately the driver already checks for invalid addresses during setup
and sets the HCI_QUIRK_INVALID_BDADDR flag. Use this flag to indicate
when the address can be overridden by firmware (long term, this should
probably just always be allowed).
Fixes: 6945795bc8
("Bluetooth: fix use-bdaddr-property quirk")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/lkml/ecef83c8-497f-4011-607b-a63c24764867@samsung.com
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
1645 lines
40 KiB
C
1645 lines
40 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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*
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* Bluetooth HCI UART driver for Broadcom devices
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*
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* Copyright (C) 2015 Intel Corporation
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/skbuff.h>
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#include <linux/firmware.h>
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#include <linux/module.h>
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#include <linux/acpi.h>
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#include <linux/of.h>
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#include <linux/of_irq.h>
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#include <linux/property.h>
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#include <linux/platform_data/x86/apple.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/consumer.h>
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#include <linux/clk.h>
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#include <linux/gpio/consumer.h>
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#include <linux/gpio/machine.h>
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#include <linux/tty.h>
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#include <linux/interrupt.h>
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#include <linux/dmi.h>
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#include <linux/pm_runtime.h>
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#include <linux/serdev.h>
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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#include "btbcm.h"
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#include "hci_uart.h"
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#define BCM_NULL_PKT 0x00
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#define BCM_NULL_SIZE 0
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#define BCM_LM_DIAG_PKT 0x07
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#define BCM_LM_DIAG_SIZE 63
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#define BCM_TYPE49_PKT 0x31
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#define BCM_TYPE49_SIZE 0
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#define BCM_TYPE52_PKT 0x34
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#define BCM_TYPE52_SIZE 0
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#define BCM_AUTOSUSPEND_DELAY 5000 /* default autosleep delay */
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#define BCM_NUM_SUPPLIES 2
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/**
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* struct bcm_device_data - device specific data
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* @no_early_set_baudrate: Disallow set baudrate before driver setup()
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* @drive_rts_on_open: drive RTS signal on ->open() when platform requires it
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* @no_uart_clock_set: UART clock set command for >3Mbps mode is unavailable
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* @max_autobaud_speed: max baudrate supported by device in autobaud mode
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* @max_speed: max baudrate supported
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*/
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struct bcm_device_data {
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bool no_early_set_baudrate;
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bool drive_rts_on_open;
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bool no_uart_clock_set;
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u32 max_autobaud_speed;
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u32 max_speed;
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};
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/**
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* struct bcm_device - device driver resources
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* @serdev_hu: HCI UART controller struct
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* @list: bcm_device_list node
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* @dev: physical UART slave
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* @name: device name logged by bt_dev_*() functions
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* @device_wakeup: BT_WAKE pin,
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* assert = Bluetooth device must wake up or remain awake,
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* deassert = Bluetooth device may sleep when sleep criteria are met
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* @shutdown: BT_REG_ON pin,
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* power up or power down Bluetooth device internal regulators
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* @reset: BT_RST_N pin,
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* active low resets the Bluetooth logic core
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* @set_device_wakeup: callback to toggle BT_WAKE pin
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* either by accessing @device_wakeup or by calling @btlp
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* @set_shutdown: callback to toggle BT_REG_ON pin
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* either by accessing @shutdown or by calling @btpu/@btpd
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* @btlp: Apple ACPI method to toggle BT_WAKE pin ("Bluetooth Low Power")
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* @btpu: Apple ACPI method to drive BT_REG_ON pin high ("Bluetooth Power Up")
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* @btpd: Apple ACPI method to drive BT_REG_ON pin low ("Bluetooth Power Down")
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* @gpio_count: internal counter for GPIO resources associated with ACPI device
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* @gpio_int_idx: index in _CRS for GpioInt() resource
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* @txco_clk: external reference frequency clock used by Bluetooth device
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* @lpo_clk: external LPO clock used by Bluetooth device
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* @supplies: VBAT and VDDIO supplies used by Bluetooth device
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* @res_enabled: whether clocks and supplies are prepared and enabled
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* @init_speed: default baudrate of Bluetooth device;
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* the host UART is initially set to this baudrate so that
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* it can configure the Bluetooth device for @oper_speed
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* @oper_speed: preferred baudrate of Bluetooth device;
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* set to 0 if @init_speed is already the preferred baudrate
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* @irq: interrupt triggered by HOST_WAKE_BT pin
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* @irq_active_low: whether @irq is active low
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* @irq_acquired: flag to show if IRQ handler has been assigned
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* @hu: pointer to HCI UART controller struct,
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* used to disable flow control during runtime suspend and system sleep
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* @is_suspended: whether flow control is currently disabled
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* @no_early_set_baudrate: don't set_baudrate before setup()
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* @drive_rts_on_open: drive RTS signal on ->open() when platform requires it
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* @no_uart_clock_set: UART clock set command for >3Mbps mode is unavailable
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* @pcm_int_params: keep the initial PCM configuration
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* @use_autobaud_mode: start Bluetooth device in autobaud mode
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* @max_autobaud_speed: max baudrate supported by device in autobaud mode
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*/
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struct bcm_device {
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/* Must be the first member, hci_serdev.c expects this. */
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struct hci_uart serdev_hu;
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struct list_head list;
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struct device *dev;
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const char *name;
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struct gpio_desc *device_wakeup;
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struct gpio_desc *shutdown;
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struct gpio_desc *reset;
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int (*set_device_wakeup)(struct bcm_device *, bool);
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int (*set_shutdown)(struct bcm_device *, bool);
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#ifdef CONFIG_ACPI
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acpi_handle btlp, btpu, btpd;
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int gpio_count;
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int gpio_int_idx;
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#endif
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struct clk *txco_clk;
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struct clk *lpo_clk;
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struct regulator_bulk_data supplies[BCM_NUM_SUPPLIES];
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bool res_enabled;
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u32 init_speed;
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u32 oper_speed;
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int irq;
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bool irq_active_low;
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bool irq_acquired;
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#ifdef CONFIG_PM
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struct hci_uart *hu;
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bool is_suspended;
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#endif
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bool no_early_set_baudrate;
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bool drive_rts_on_open;
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bool no_uart_clock_set;
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bool use_autobaud_mode;
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u8 pcm_int_params[5];
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u32 max_autobaud_speed;
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};
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/* generic bcm uart resources */
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struct bcm_data {
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struct sk_buff *rx_skb;
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struct sk_buff_head txq;
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struct bcm_device *dev;
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};
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/* List of BCM BT UART devices */
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static DEFINE_MUTEX(bcm_device_lock);
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static LIST_HEAD(bcm_device_list);
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static int irq_polarity = -1;
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module_param(irq_polarity, int, 0444);
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MODULE_PARM_DESC(irq_polarity, "IRQ polarity 0: active-high 1: active-low");
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static inline void host_set_baudrate(struct hci_uart *hu, unsigned int speed)
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{
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if (hu->serdev)
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serdev_device_set_baudrate(hu->serdev, speed);
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else
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hci_uart_set_baudrate(hu, speed);
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}
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static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed)
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{
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struct hci_dev *hdev = hu->hdev;
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struct bcm_data *bcm = hu->priv;
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struct sk_buff *skb;
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struct bcm_update_uart_baud_rate param;
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if (speed > 3000000 && !bcm->dev->no_uart_clock_set) {
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struct bcm_write_uart_clock_setting clock;
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clock.type = BCM_UART_CLOCK_48MHZ;
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bt_dev_dbg(hdev, "Set Controller clock (%d)", clock.type);
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/* This Broadcom specific command changes the UART's controller
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* clock for baud rate > 3000000.
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*/
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skb = __hci_cmd_sync(hdev, 0xfc45, 1, &clock, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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int err = PTR_ERR(skb);
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bt_dev_err(hdev, "BCM: failed to write clock (%d)",
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err);
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return err;
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}
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kfree_skb(skb);
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}
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bt_dev_dbg(hdev, "Set Controller UART speed to %d bit/s", speed);
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param.zero = cpu_to_le16(0);
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param.baud_rate = cpu_to_le32(speed);
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/* This Broadcom specific command changes the UART's controller baud
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* rate.
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*/
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skb = __hci_cmd_sync(hdev, 0xfc18, sizeof(param), ¶m,
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HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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int err = PTR_ERR(skb);
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bt_dev_err(hdev, "BCM: failed to write update baudrate (%d)",
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err);
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return err;
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}
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kfree_skb(skb);
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return 0;
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}
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/* bcm_device_exists should be protected by bcm_device_lock */
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static bool bcm_device_exists(struct bcm_device *device)
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{
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struct list_head *p;
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#ifdef CONFIG_PM
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/* Devices using serdev always exist */
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if (device && device->hu && device->hu->serdev)
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return true;
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#endif
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list_for_each(p, &bcm_device_list) {
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struct bcm_device *dev = list_entry(p, struct bcm_device, list);
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if (device == dev)
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return true;
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}
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return false;
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}
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static int bcm_gpio_set_power(struct bcm_device *dev, bool powered)
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{
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int err;
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if (powered && !dev->res_enabled) {
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/* Intel Macs use bcm_apple_get_resources() and don't
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* have regulator supplies configured.
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*/
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if (dev->supplies[0].supply) {
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err = regulator_bulk_enable(BCM_NUM_SUPPLIES,
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dev->supplies);
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if (err)
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return err;
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}
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/* LPO clock needs to be 32.768 kHz */
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err = clk_set_rate(dev->lpo_clk, 32768);
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if (err) {
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dev_err(dev->dev, "Could not set LPO clock rate\n");
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goto err_regulator_disable;
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}
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err = clk_prepare_enable(dev->lpo_clk);
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if (err)
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goto err_regulator_disable;
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err = clk_prepare_enable(dev->txco_clk);
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if (err)
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goto err_lpo_clk_disable;
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}
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err = dev->set_shutdown(dev, powered);
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if (err)
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goto err_txco_clk_disable;
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err = dev->set_device_wakeup(dev, powered);
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if (err)
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goto err_revert_shutdown;
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if (!powered && dev->res_enabled) {
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clk_disable_unprepare(dev->txco_clk);
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clk_disable_unprepare(dev->lpo_clk);
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/* Intel Macs use bcm_apple_get_resources() and don't
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* have regulator supplies configured.
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*/
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if (dev->supplies[0].supply)
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regulator_bulk_disable(BCM_NUM_SUPPLIES,
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dev->supplies);
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}
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/* wait for device to power on and come out of reset */
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usleep_range(100000, 120000);
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dev->res_enabled = powered;
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return 0;
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err_revert_shutdown:
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dev->set_shutdown(dev, !powered);
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err_txco_clk_disable:
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if (powered && !dev->res_enabled)
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clk_disable_unprepare(dev->txco_clk);
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err_lpo_clk_disable:
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if (powered && !dev->res_enabled)
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clk_disable_unprepare(dev->lpo_clk);
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err_regulator_disable:
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if (powered && !dev->res_enabled)
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regulator_bulk_disable(BCM_NUM_SUPPLIES, dev->supplies);
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return err;
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}
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#ifdef CONFIG_PM
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static irqreturn_t bcm_host_wake(int irq, void *data)
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{
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struct bcm_device *bdev = data;
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bt_dev_dbg(bdev, "Host wake IRQ");
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pm_runtime_get(bdev->dev);
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pm_runtime_mark_last_busy(bdev->dev);
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pm_runtime_put_autosuspend(bdev->dev);
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return IRQ_HANDLED;
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}
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static int bcm_request_irq(struct bcm_data *bcm)
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{
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struct bcm_device *bdev = bcm->dev;
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int err;
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mutex_lock(&bcm_device_lock);
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if (!bcm_device_exists(bdev)) {
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err = -ENODEV;
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goto unlock;
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}
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if (bdev->irq <= 0) {
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err = -EOPNOTSUPP;
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goto unlock;
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}
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err = devm_request_irq(bdev->dev, bdev->irq, bcm_host_wake,
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bdev->irq_active_low ? IRQF_TRIGGER_FALLING :
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IRQF_TRIGGER_RISING,
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"host_wake", bdev);
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if (err) {
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bdev->irq = err;
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goto unlock;
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}
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bdev->irq_acquired = true;
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device_init_wakeup(bdev->dev, true);
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pm_runtime_set_autosuspend_delay(bdev->dev,
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BCM_AUTOSUSPEND_DELAY);
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pm_runtime_use_autosuspend(bdev->dev);
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pm_runtime_set_active(bdev->dev);
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pm_runtime_enable(bdev->dev);
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unlock:
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mutex_unlock(&bcm_device_lock);
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return err;
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}
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static const struct bcm_set_sleep_mode default_sleep_params = {
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.sleep_mode = 1, /* 0=Disabled, 1=UART, 2=Reserved, 3=USB */
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.idle_host = 2, /* idle threshold HOST, in 300ms */
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.idle_dev = 2, /* idle threshold device, in 300ms */
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.bt_wake_active = 1, /* BT_WAKE active mode: 1 = high, 0 = low */
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.host_wake_active = 0, /* HOST_WAKE active mode: 1 = high, 0 = low */
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.allow_host_sleep = 1, /* Allow host sleep in SCO flag */
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.combine_modes = 1, /* Combine sleep and LPM flag */
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.tristate_control = 0, /* Allow tri-state control of UART tx flag */
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/* Irrelevant USB flags */
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.usb_auto_sleep = 0,
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.usb_resume_timeout = 0,
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.break_to_host = 0,
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.pulsed_host_wake = 1,
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};
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static int bcm_setup_sleep(struct hci_uart *hu)
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{
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struct bcm_data *bcm = hu->priv;
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struct sk_buff *skb;
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struct bcm_set_sleep_mode sleep_params = default_sleep_params;
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sleep_params.host_wake_active = !bcm->dev->irq_active_low;
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skb = __hci_cmd_sync(hu->hdev, 0xfc27, sizeof(sleep_params),
|
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&sleep_params, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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int err = PTR_ERR(skb);
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bt_dev_err(hu->hdev, "Sleep VSC failed (%d)", err);
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return err;
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}
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kfree_skb(skb);
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|
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bt_dev_dbg(hu->hdev, "Set Sleep Parameters VSC succeeded");
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|
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return 0;
|
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}
|
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#else
|
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static inline int bcm_request_irq(struct bcm_data *bcm) { return 0; }
|
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static inline int bcm_setup_sleep(struct hci_uart *hu) { return 0; }
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#endif
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|
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static int bcm_set_diag(struct hci_dev *hdev, bool enable)
|
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{
|
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struct hci_uart *hu = hci_get_drvdata(hdev);
|
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struct bcm_data *bcm = hu->priv;
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struct sk_buff *skb;
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|
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if (!test_bit(HCI_RUNNING, &hdev->flags))
|
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return -ENETDOWN;
|
|
|
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skb = bt_skb_alloc(3, GFP_KERNEL);
|
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if (!skb)
|
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return -ENOMEM;
|
|
|
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skb_put_u8(skb, BCM_LM_DIAG_PKT);
|
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skb_put_u8(skb, 0xf0);
|
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skb_put_u8(skb, enable);
|
|
|
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skb_queue_tail(&bcm->txq, skb);
|
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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))
|
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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) {
|
|
if (bcm->dev->use_autobaud_mode)
|
|
hci_uart_set_flow_control(hu, false); /* Assert BT_UART_CTS_N */
|
|
else if (bcm->dev->drive_rts_on_open)
|
|
hci_uart_set_flow_control(hu, true);
|
|
|
|
if (bcm->dev->use_autobaud_mode && bcm->dev->max_autobaud_speed)
|
|
hu->init_speed = min(bcm->dev->oper_speed, bcm->dev->max_autobaud_speed);
|
|
else
|
|
hu->init_speed = bcm->dev->init_speed;
|
|
|
|
/* If oper_speed is set, ldisc/serdev will set the baudrate
|
|
* before calling setup()
|
|
*/
|
|
if (!bcm->dev->no_early_set_baudrate && !bcm->dev->use_autobaud_mode)
|
|
hu->oper_speed = bcm->dev->oper_speed;
|
|
|
|
err = bcm_gpio_set_power(bcm->dev, true);
|
|
|
|
if (bcm->dev->drive_rts_on_open)
|
|
hci_uart_set_flow_control(hu, false);
|
|
|
|
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;
|
|
bool fw_load_done = false;
|
|
bool use_autobaud_mode = (bcm->dev ? bcm->dev->use_autobaud_mode : 0);
|
|
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_load_done, use_autobaud_mode);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!fw_load_done)
|
|
return 0;
|
|
|
|
/* Init speed if any */
|
|
if (bcm->dev && bcm->dev->init_speed)
|
|
speed = bcm->dev->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 (bcm->dev && bcm->dev->oper_speed)
|
|
speed = bcm->dev->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);
|
|
}
|
|
|
|
/* PCM parameters if provided */
|
|
if (bcm->dev && bcm->dev->pcm_int_params[0] != 0xff) {
|
|
struct bcm_set_pcm_int_params params;
|
|
|
|
btbcm_read_pcm_int_params(hu->hdev, ¶ms);
|
|
|
|
memcpy(¶ms, bcm->dev->pcm_int_params, 5);
|
|
btbcm_write_pcm_int_params(hu->hdev, ¶ms);
|
|
}
|
|
|
|
err = btbcm_finalize(hu->hdev, &fw_load_done, use_autobaud_mode);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Some devices ship with the controller default address.
|
|
* Allow the bootloader to set a valid address through the
|
|
* device tree.
|
|
*/
|
|
if (test_bit(HCI_QUIRK_INVALID_BDADDR, &hu->hdev->quirks))
|
|
set_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hu->hdev->quirks);
|
|
|
|
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 },
|
|
{ H4_RECV_ISO, .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 struct gpiod_lookup_table irq_on_int33fc02_pin17_gpios = {
|
|
.dev_id = "serial0-0",
|
|
.table = {
|
|
GPIO_LOOKUP("INT33FC:02", 17, "host-wakeup-alt", GPIO_ACTIVE_HIGH),
|
|
{ }
|
|
},
|
|
};
|
|
|
|
static const struct dmi_system_id bcm_broken_irq_dmi_table[] = {
|
|
{
|
|
.ident = "Acer Iconia One 7 B1-750",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "VESPA2"),
|
|
},
|
|
.driver_data = &irq_on_int33fc02_pin17_gpios,
|
|
},
|
|
{
|
|
.ident = "Asus TF103C",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "TF103C"),
|
|
},
|
|
.driver_data = &irq_on_int33fc02_pin17_gpios,
|
|
},
|
|
{
|
|
.ident = "Lenovo Yoga Tablet 2 830F/L / 1050F/L",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "VALLEYVIEW C0 PLATFORM"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"),
|
|
/* Partial match on beginning of BIOS version */
|
|
DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21"),
|
|
},
|
|
.driver_data = &irq_on_int33fc02_pin17_gpios,
|
|
},
|
|
{
|
|
.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);
|
|
if (dev->reset)
|
|
/*
|
|
* The reset line is asserted on powerdown and deasserted
|
|
* on poweron so the inverse of powered is used. Notice
|
|
* that the GPIO line BT_RST_N needs to be specified as
|
|
* active low in the device tree or similar system
|
|
* description.
|
|
*/
|
|
gpiod_set_value_cansleep(dev->reset, !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 *broken_irq_dmi_id;
|
|
const char *irq_con_id = "host-wakeup";
|
|
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->reset = devm_gpiod_get_optional(dev->dev, "reset",
|
|
GPIOD_OUT_LOW);
|
|
if (IS_ERR(dev->reset))
|
|
return PTR_ERR(dev->reset);
|
|
|
|
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;
|
|
|
|
broken_irq_dmi_id = dmi_first_match(bcm_broken_irq_dmi_table);
|
|
if (broken_irq_dmi_id && broken_irq_dmi_id->driver_data) {
|
|
gpiod_add_lookup_table(broken_irq_dmi_id->driver_data);
|
|
irq_con_id = "host-wakeup-alt";
|
|
dev->irq_active_low = false;
|
|
dev->irq = 0;
|
|
}
|
|
|
|
/* 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, irq_con_id, GPIOD_IN);
|
|
if (IS_ERR(gpio))
|
|
return PTR_ERR(gpio);
|
|
|
|
dev->irq = gpiod_to_irq(gpio);
|
|
}
|
|
|
|
if (broken_irq_dmi_id) {
|
|
if (broken_irq_dmi_id->driver_data) {
|
|
gpiod_remove_lookup_table(broken_irq_dmi_id->driver_data);
|
|
} else {
|
|
dev_info(dev->dev, "%s: Has a broken IRQ config, disabling IRQ support / runtime-pm\n",
|
|
broken_irq_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)
|
|
{
|
|
bdev->use_autobaud_mode = device_property_read_bool(bdev->dev,
|
|
"brcm,requires-autobaud-mode");
|
|
device_property_read_u32(bdev->dev, "max-speed", &bdev->oper_speed);
|
|
device_property_read_u8_array(bdev->dev, "brcm,bt-pcm-int-params",
|
|
bdev->pcm_int_params, 5);
|
|
bdev->irq = of_irq_get_byname(bdev->dev->of_node, "host-wakeup");
|
|
bdev->irq_active_low = irq_get_trigger_type(bdev->irq)
|
|
& (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_LEVEL_LOW);
|
|
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;
|
|
|
|
/* Initialize routing field to an unused value */
|
|
dev->pcm_int_params[0] = 0xff;
|
|
|
|
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
|
|
|
|
/* bcm43430a0/a1 BT does not support 48MHz UART clock, limit to 2000000 baud */
|
|
static struct bcm_device_data bcm43430_device_data = {
|
|
.max_speed = 2000000,
|
|
};
|
|
|
|
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", (long)&bcm43430_device_data },
|
|
{ "BCM2E75", (long)&bcm43430_device_data },
|
|
{ "BCM2E76" },
|
|
{ "BCM2E77" },
|
|
{ "BCM2E78" },
|
|
{ "BCM2E79" },
|
|
{ "BCM2E7A" },
|
|
{ "BCM2E7B", (long)&bcm43430_device_data },
|
|
{ "BCM2E7C" },
|
|
{ "BCM2E7D" },
|
|
{ "BCM2E7E" },
|
|
{ "BCM2E7F" },
|
|
{ "BCM2E80", (long)&bcm43430_device_data },
|
|
{ "BCM2E81" },
|
|
{ "BCM2E82" },
|
|
{ "BCM2E83" },
|
|
{ "BCM2E84" },
|
|
{ "BCM2E85" },
|
|
{ "BCM2E86" },
|
|
{ "BCM2E87" },
|
|
{ "BCM2E88" },
|
|
{ "BCM2E89", (long)&bcm43430_device_data },
|
|
{ "BCM2E8A" },
|
|
{ "BCM2E8B" },
|
|
{ "BCM2E8C" },
|
|
{ "BCM2E8D" },
|
|
{ "BCM2E8E" },
|
|
{ "BCM2E90" },
|
|
{ "BCM2E92" },
|
|
{ "BCM2E93" },
|
|
{ "BCM2E94", (long)&bcm43430_device_data },
|
|
{ "BCM2E95" },
|
|
{ "BCM2E96" },
|
|
{ "BCM2E97" },
|
|
{ "BCM2E98" },
|
|
{ "BCM2E99", (long)&bcm43430_device_data },
|
|
{ "BCM2E9A" },
|
|
{ "BCM2E9B", (long)&bcm43430_device_data },
|
|
{ "BCM2E9C" },
|
|
{ "BCM2E9D" },
|
|
{ "BCM2E9F", (long)&bcm43430_device_data },
|
|
{ "BCM2EA0" },
|
|
{ "BCM2EA1" },
|
|
{ "BCM2EA2", (long)&bcm43430_device_data },
|
|
{ "BCM2EA3", (long)&bcm43430_device_data },
|
|
{ "BCM2EA4" },
|
|
{ "BCM2EA5" },
|
|
{ "BCM2EA6" },
|
|
{ "BCM2EA7" },
|
|
{ "BCM2EA8" },
|
|
{ "BCM2EA9" },
|
|
{ "BCM2EAA", (long)&bcm43430_device_data },
|
|
{ "BCM2EAB", (long)&bcm43430_device_data },
|
|
{ "BCM2EAC", (long)&bcm43430_device_data },
|
|
{ },
|
|
};
|
|
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;
|
|
const struct bcm_device_data *data;
|
|
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);
|
|
|
|
/* Initialize routing field to an unused value */
|
|
bcmdev->pcm_int_params[0] = 0xff;
|
|
|
|
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");
|
|
|
|
data = device_get_match_data(bcmdev->dev);
|
|
if (data) {
|
|
bcmdev->max_autobaud_speed = data->max_autobaud_speed;
|
|
bcmdev->no_early_set_baudrate = data->no_early_set_baudrate;
|
|
bcmdev->drive_rts_on_open = data->drive_rts_on_open;
|
|
bcmdev->no_uart_clock_set = data->no_uart_clock_set;
|
|
if (data->max_speed && bcmdev->oper_speed > data->max_speed)
|
|
bcmdev->oper_speed = data->max_speed;
|
|
}
|
|
|
|
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 struct bcm_device_data bcm4354_device_data = {
|
|
.no_early_set_baudrate = true,
|
|
};
|
|
|
|
static struct bcm_device_data bcm43438_device_data = {
|
|
.drive_rts_on_open = true,
|
|
};
|
|
|
|
static struct bcm_device_data cyw4373a0_device_data = {
|
|
.no_uart_clock_set = true,
|
|
};
|
|
|
|
static struct bcm_device_data cyw55572_device_data = {
|
|
.max_autobaud_speed = 921600,
|
|
};
|
|
|
|
static const struct of_device_id bcm_bluetooth_of_match[] = {
|
|
{ .compatible = "brcm,bcm20702a1" },
|
|
{ .compatible = "brcm,bcm4329-bt" },
|
|
{ .compatible = "brcm,bcm4330-bt" },
|
|
{ .compatible = "brcm,bcm4334-bt" },
|
|
{ .compatible = "brcm,bcm4345c5" },
|
|
{ .compatible = "brcm,bcm43430a0-bt" },
|
|
{ .compatible = "brcm,bcm43430a1-bt" },
|
|
{ .compatible = "brcm,bcm43438-bt", .data = &bcm43438_device_data },
|
|
{ .compatible = "brcm,bcm4349-bt", .data = &bcm43438_device_data },
|
|
{ .compatible = "brcm,bcm43540-bt", .data = &bcm4354_device_data },
|
|
{ .compatible = "brcm,bcm4335a0" },
|
|
{ .compatible = "cypress,cyw4373a0-bt", .data = &cyw4373a0_device_data },
|
|
{ .compatible = "infineon,cyw55572-bt", .data = &cyw55572_device_data },
|
|
{ },
|
|
};
|
|
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);
|
|
}
|