2015-04-05 01:13:03 +02:00
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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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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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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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2015-05-28 11:25:01 +02:00
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#include <linux/firmware.h>
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2015-08-11 16:35:35 +02:00
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#include <linux/module.h>
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#include <linux/acpi.h>
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2017-08-17 19:59:51 +02:00
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#include <linux/of.h>
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#include <linux/property.h>
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2015-08-11 16:35:35 +02:00
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#include <linux/platform_device.h>
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#include <linux/clk.h>
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#include <linux/gpio/consumer.h>
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#include <linux/tty.h>
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2015-09-04 15:35:44 +02:00
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#include <linux/interrupt.h>
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2015-09-23 18:18:08 +02:00
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#include <linux/dmi.h>
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2015-09-23 18:18:11 +02:00
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#include <linux/pm_runtime.h>
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2017-08-17 19:59:51 +02:00
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#include <linux/serdev.h>
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2015-04-05 01:13:03 +02:00
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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2015-04-06 07:52:18 +02:00
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#include "btbcm.h"
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2015-04-05 01:13:03 +02:00
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#include "hci_uart.h"
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2015-04-06 07:52:18 +02:00
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2017-08-17 21:41:09 +02:00
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#define BCM_NULL_PKT 0x00
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#define BCM_NULL_SIZE 0
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2015-10-07 19:12:54 +02:00
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#define BCM_LM_DIAG_PKT 0x07
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#define BCM_LM_DIAG_SIZE 63
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2015-09-23 18:18:11 +02:00
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#define BCM_AUTOSUSPEND_DELAY 5000 /* default autosleep delay */
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2018-01-10 16:32:10 +01:00
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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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2018-01-10 16:32:10 +01:00
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* @set_device_wakeup: callback to toggle BT_WAKE pin
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* @set_shutdown: callback to toggle BT_REG_ON pin
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2018-01-10 16:32:10 +01:00
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* @clk: clock used by Bluetooth device
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* @clk_enabled: whether @clk is 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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* @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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*/
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2015-08-11 16:35:35 +02:00
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struct bcm_device {
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2017-10-04 20:43:43 +02:00
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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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2015-08-11 16:35:35 +02:00
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struct list_head list;
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2017-10-04 20:43:39 +02:00
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struct device *dev;
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2015-08-11 16:35:35 +02:00
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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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2018-01-10 16:32:10 +01:00
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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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2015-08-11 16:35:35 +02:00
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struct clk *clk;
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bool clk_enabled;
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2015-08-11 16:35:37 +02:00
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u32 init_speed;
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2017-08-16 09:53:30 +02:00
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u32 oper_speed;
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2015-09-04 15:35:44 +02:00
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int irq;
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2017-10-04 20:43:36 +02:00
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bool irq_active_low;
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2015-08-11 16:35:38 +02:00
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2015-09-23 18:18:09 +02:00
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#ifdef CONFIG_PM
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2015-08-11 16:35:38 +02:00
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struct hci_uart *hu;
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2018-01-10 16:32:10 +01:00
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bool is_suspended;
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2015-08-11 16:35:38 +02:00
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#endif
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2015-08-11 16:35:35 +02:00
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};
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2017-08-17 19:59:51 +02:00
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/* generic bcm uart resources */
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2015-04-06 07:52:18 +02:00
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struct bcm_data {
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2015-08-11 16:35:35 +02:00
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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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2015-04-06 07:52:18 +02:00
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};
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2015-08-11 16:35:35 +02:00
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/* List of BCM BT UART devices */
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2015-09-01 12:13:35 +02:00
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static DEFINE_MUTEX(bcm_device_lock);
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2015-08-11 16:35:35 +02:00
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static LIST_HEAD(bcm_device_list);
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2017-08-17 19:59:51 +02:00
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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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2015-06-09 16:15:37 +02:00
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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 sk_buff *skb;
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struct bcm_update_uart_baud_rate param;
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if (speed > 3000000) {
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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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2015-09-01 12:13:36 +02:00
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bt_dev_dbg(hdev, "Set Controller clock (%d)", clock.type);
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2015-06-09 16:15:37 +02:00
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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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2015-09-01 12:13:36 +02:00
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bt_dev_err(hdev, "BCM: failed to write clock (%d)",
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err);
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2015-06-09 16:15:37 +02:00
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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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2015-09-01 12:13:36 +02:00
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bt_dev_dbg(hdev, "Set Controller UART speed to %d bit/s", speed);
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2015-06-09 16:15:37 +02:00
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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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2015-09-01 12:13:36 +02:00
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bt_dev_err(hdev, "BCM: failed to write update baudrate (%d)",
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err);
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2015-06-09 16:15:37 +02:00
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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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2015-08-28 15:44:00 +02:00
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/* bcm_device_exists should be protected by bcm_device_lock */
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2015-08-11 16:35:35 +02:00
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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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2017-10-11 15:46:21 +02:00
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#ifdef CONFIG_PM
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2017-10-04 20:43:43 +02:00
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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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2017-10-11 15:46:21 +02:00
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#endif
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2017-10-04 20:43:43 +02:00
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2015-08-11 16:35:35 +02:00
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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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if (powered && !IS_ERR(dev->clk) && !dev->clk_enabled)
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2017-03-15 13:20:05 +01:00
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clk_prepare_enable(dev->clk);
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2015-08-11 16:35:35 +02:00
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2018-01-10 16:32:10 +01:00
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dev->set_shutdown(dev, powered);
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dev->set_device_wakeup(dev, powered);
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2015-08-11 16:35:35 +02:00
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if (!powered && !IS_ERR(dev->clk) && dev->clk_enabled)
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2017-03-15 13:20:05 +01:00
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clk_disable_unprepare(dev->clk);
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2015-08-11 16:35:35 +02:00
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dev->clk_enabled = powered;
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return 0;
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}
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2015-09-23 18:18:09 +02:00
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#ifdef CONFIG_PM
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2015-09-04 15:35:44 +02:00
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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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2017-12-26 16:07:34 +01:00
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pm_request_resume(bdev->dev);
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2015-09-23 18:18:11 +02:00
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2015-09-04 15:35:44 +02:00
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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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2017-07-04 12:57:56 +02:00
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int err;
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2015-09-04 15:35:44 +02:00
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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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2017-07-04 12:57:56 +02:00
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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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2015-09-04 15:35:44 +02:00
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2017-10-04 20:43:39 +02:00
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err = devm_request_irq(bdev->dev, bdev->irq, bcm_host_wake,
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2017-10-04 20:43:36 +02:00
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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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2018-01-10 16:32:10 +01:00
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if (err) {
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bdev->irq = err;
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2017-07-04 12:57:56 +02:00
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goto unlock;
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2018-01-10 16:32:10 +01:00
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}
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2015-09-23 18:18:11 +02:00
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2017-10-04 20:43:39 +02:00
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device_init_wakeup(bdev->dev, true);
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2017-07-04 12:57:56 +02:00
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2017-10-04 20:43:39 +02:00
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pm_runtime_set_autosuspend_delay(bdev->dev,
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2017-07-04 12:57:56 +02:00
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BCM_AUTOSUSPEND_DELAY);
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2017-10-04 20:43:39 +02:00
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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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2015-09-04 15:35:44 +02:00
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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 */
|
2015-09-23 18:18:11 +02:00
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.combine_modes = 1, /* Combine sleep and LPM flag */
|
2015-09-04 15:35:44 +02:00
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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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.pulsed_host_wake = 0,
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.break_to_host = 0
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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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|
2017-10-04 20:43:36 +02:00
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sleep_params.host_wake_active = !bcm->dev->irq_active_low;
|
2015-09-04 15:35:44 +02:00
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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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bt_dev_dbg(hu->hdev, "Set Sleep Parameters VSC succeeded");
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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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|
2015-10-07 20:08:26 +02:00
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|
|
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);
|
2015-10-22 11:06:09 +02:00
|
|
|
if (!skb)
|
|
|
|
return -ENOMEM;
|
2015-10-07 20:08:26 +02:00
|
|
|
|
networking: add and use skb_put_u8()
Joe and Bjørn suggested that it'd be nicer to not have the
cast in the fairly common case of doing
*(u8 *)skb_put(skb, 1) = c;
Add skb_put_u8() for this case, and use it across the code,
using the following spatch:
@@
expression SKB, C, S;
typedef u8;
identifier fn = {skb_put};
fresh identifier fn2 = fn ## "_u8";
@@
- *(u8 *)fn(SKB, S) = C;
+ fn2(SKB, C);
Note that due to the "S", the spatch isn't perfect, it should
have checked that S is 1, but there's also places that use a
sizeof expression like sizeof(var) or sizeof(u8) etc. Turns
out that nobody ever did something like
*(u8 *)skb_put(skb, 2) = c;
which would be wrong anyway since the second byte wouldn't be
initialized.
Suggested-by: Joe Perches <joe@perches.com>
Suggested-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 14:29:24 +02:00
|
|
|
skb_put_u8(skb, BCM_LM_DIAG_PKT);
|
|
|
|
skb_put_u8(skb, 0xf0);
|
|
|
|
skb_put_u8(skb, enable);
|
2015-10-07 20:08:26 +02:00
|
|
|
|
|
|
|
skb_queue_tail(&bcm->txq, skb);
|
|
|
|
hci_uart_tx_wakeup(hu);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-04-06 07:52:18 +02:00
|
|
|
static int bcm_open(struct hci_uart *hu)
|
|
|
|
{
|
|
|
|
struct bcm_data *bcm;
|
2015-08-11 16:35:35 +02:00
|
|
|
struct list_head *p;
|
2015-04-06 07:52:18 +02:00
|
|
|
|
2015-09-01 12:13:36 +02:00
|
|
|
bt_dev_dbg(hu->hdev, "hu %p", hu);
|
2015-04-06 07:52:18 +02:00
|
|
|
|
|
|
|
bcm = kzalloc(sizeof(*bcm), GFP_KERNEL);
|
|
|
|
if (!bcm)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
skb_queue_head_init(&bcm->txq);
|
|
|
|
|
|
|
|
hu->priv = bcm;
|
2015-08-11 16:35:35 +02:00
|
|
|
|
2017-10-04 20:43:43 +02:00
|
|
|
mutex_lock(&bcm_device_lock);
|
|
|
|
|
2017-08-17 19:59:51 +02:00
|
|
|
if (hu->serdev) {
|
|
|
|
serdev_device_open(hu->serdev);
|
2017-10-04 20:43:43 +02:00
|
|
|
bcm->dev = serdev_device_get_drvdata(hu->serdev);
|
2017-08-17 19:59:51 +02:00
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
2017-03-29 18:15:27 +02:00
|
|
|
if (!hu->tty->dev)
|
|
|
|
goto out;
|
|
|
|
|
2015-08-11 16:35:35 +02:00
|
|
|
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
|
|
|
|
*/
|
2017-10-04 20:43:39 +02:00
|
|
|
if (hu->tty->dev->parent == dev->dev->parent) {
|
2015-08-11 16:35:35 +02:00
|
|
|
bcm->dev = dev;
|
2015-09-23 18:18:09 +02:00
|
|
|
#ifdef CONFIG_PM
|
2015-08-11 16:35:38 +02:00
|
|
|
dev->hu = hu;
|
|
|
|
#endif
|
2015-08-11 16:35:35 +02:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2017-03-29 18:15:27 +02:00
|
|
|
out:
|
2017-10-04 20:43:43 +02:00
|
|
|
if (bcm->dev) {
|
|
|
|
hu->init_speed = bcm->dev->init_speed;
|
|
|
|
hu->oper_speed = bcm->dev->oper_speed;
|
|
|
|
bcm_gpio_set_power(bcm->dev, true);
|
|
|
|
}
|
|
|
|
|
|
|
|
mutex_unlock(&bcm_device_lock);
|
2015-04-06 07:52:18 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int bcm_close(struct hci_uart *hu)
|
|
|
|
{
|
|
|
|
struct bcm_data *bcm = hu->priv;
|
2017-10-04 20:43:43 +02:00
|
|
|
struct bcm_device *bdev = NULL;
|
2015-04-06 07:52:18 +02:00
|
|
|
|
2015-09-01 12:13:36 +02:00
|
|
|
bt_dev_dbg(hu->hdev, "hu %p", hu);
|
2015-04-06 07:52:18 +02:00
|
|
|
|
2015-08-11 16:35:35 +02:00
|
|
|
/* Protect bcm->dev against removal of the device or driver */
|
2015-09-01 12:13:35 +02:00
|
|
|
mutex_lock(&bcm_device_lock);
|
2017-10-04 20:43:43 +02:00
|
|
|
|
|
|
|
if (hu->serdev) {
|
|
|
|
serdev_device_close(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) {
|
2018-01-10 16:32:10 +01:00
|
|
|
if (IS_ENABLED(CONFIG_PM) && bdev->irq > 0) {
|
2017-10-04 20:43:39 +02:00
|
|
|
devm_free_irq(bdev->dev, bdev->irq, bdev);
|
|
|
|
device_init_wakeup(bdev->dev, false);
|
2018-01-10 16:32:10 +01:00
|
|
|
pm_runtime_disable(bdev->dev);
|
2015-09-04 15:35:44 +02:00
|
|
|
}
|
2018-01-10 16:32:10 +01:00
|
|
|
|
|
|
|
bcm_gpio_set_power(bdev, false);
|
|
|
|
pm_runtime_set_suspended(bdev->dev);
|
2015-08-11 16:35:38 +02:00
|
|
|
}
|
2015-09-01 12:13:35 +02:00
|
|
|
mutex_unlock(&bcm_device_lock);
|
2015-08-11 16:35:35 +02:00
|
|
|
|
2015-04-06 07:52:18 +02:00
|
|
|
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;
|
|
|
|
|
2015-09-01 12:13:36 +02:00
|
|
|
bt_dev_dbg(hu->hdev, "hu %p", hu);
|
2015-04-06 07:52:18 +02:00
|
|
|
|
|
|
|
skb_queue_purge(&bcm->txq);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int bcm_setup(struct hci_uart *hu)
|
|
|
|
{
|
2015-09-04 15:35:44 +02:00
|
|
|
struct bcm_data *bcm = hu->priv;
|
2015-05-28 11:25:05 +02:00
|
|
|
char fw_name[64];
|
|
|
|
const struct firmware *fw;
|
2015-06-18 12:43:27 +02:00
|
|
|
unsigned int speed;
|
2015-05-28 11:25:05 +02:00
|
|
|
int err;
|
|
|
|
|
2015-09-01 12:13:36 +02:00
|
|
|
bt_dev_dbg(hu->hdev, "hu %p", hu);
|
2015-04-06 07:52:18 +02:00
|
|
|
|
2015-10-07 20:08:26 +02:00
|
|
|
hu->hdev->set_diag = bcm_set_diag;
|
2015-04-06 07:52:18 +02:00
|
|
|
hu->hdev->set_bdaddr = btbcm_set_bdaddr;
|
|
|
|
|
2015-05-28 11:25:05 +02:00
|
|
|
err = btbcm_initialize(hu->hdev, fw_name, sizeof(fw_name));
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
|
|
|
|
err = request_firmware(&fw, fw_name, &hu->hdev->dev);
|
|
|
|
if (err < 0) {
|
2015-09-01 12:13:36 +02:00
|
|
|
bt_dev_info(hu->hdev, "BCM: Patch %s not found", fw_name);
|
2015-05-28 11:25:05 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = btbcm_patchram(hu->hdev, fw);
|
|
|
|
if (err) {
|
2015-09-01 12:13:36 +02:00
|
|
|
bt_dev_info(hu->hdev, "BCM: Patch failed (%d)", err);
|
2015-05-28 11:25:05 +02:00
|
|
|
goto finalize;
|
|
|
|
}
|
|
|
|
|
2015-06-18 12:43:27 +02:00
|
|
|
/* 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)
|
2017-08-17 19:59:51 +02:00
|
|
|
host_set_baudrate(hu, speed);
|
2015-06-18 12:43:27 +02:00
|
|
|
|
|
|
|
/* 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);
|
2015-06-09 16:15:37 +02:00
|
|
|
if (!err)
|
2017-08-17 19:59:51 +02:00
|
|
|
host_set_baudrate(hu, speed);
|
2015-06-09 16:15:37 +02:00
|
|
|
}
|
|
|
|
|
2015-05-28 11:25:05 +02:00
|
|
|
finalize:
|
|
|
|
release_firmware(fw);
|
|
|
|
|
|
|
|
err = btbcm_finalize(hu->hdev);
|
2015-09-04 15:35:44 +02:00
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
|
2017-06-27 19:15:07 +02:00
|
|
|
if (!bcm_request_irq(bcm))
|
2015-09-04 15:35:44 +02:00
|
|
|
err = bcm_setup_sleep(hu);
|
2015-05-28 11:25:05 +02:00
|
|
|
|
|
|
|
return err;
|
2015-04-06 07:52:18 +02:00
|
|
|
}
|
|
|
|
|
2015-10-07 19:12:54 +02:00
|
|
|
#define BCM_RECV_LM_DIAG \
|
|
|
|
.type = BCM_LM_DIAG_PKT, \
|
|
|
|
.hlen = BCM_LM_DIAG_SIZE, \
|
|
|
|
.loff = 0, \
|
|
|
|
.lsize = 0, \
|
|
|
|
.maxlen = BCM_LM_DIAG_SIZE
|
|
|
|
|
2017-08-17 21:41:09 +02:00
|
|
|
#define BCM_RECV_NULL \
|
|
|
|
.type = BCM_NULL_PKT, \
|
|
|
|
.hlen = BCM_NULL_SIZE, \
|
|
|
|
.loff = 0, \
|
|
|
|
.lsize = 0, \
|
|
|
|
.maxlen = BCM_NULL_SIZE
|
|
|
|
|
2015-04-06 08:44:59 +02:00
|
|
|
static const struct h4_recv_pkt bcm_recv_pkts[] = {
|
2015-10-07 19:12:54 +02:00
|
|
|
{ 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 },
|
2017-08-17 21:41:09 +02:00
|
|
|
{ BCM_RECV_NULL, .recv = hci_recv_diag },
|
2015-04-06 08:44:59 +02:00
|
|
|
};
|
|
|
|
|
2015-04-06 07:52:18 +02:00
|
|
|
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;
|
|
|
|
|
2015-04-06 08:44:59 +02:00
|
|
|
bcm->rx_skb = h4_recv_buf(hu->hdev, bcm->rx_skb, data, count,
|
|
|
|
bcm_recv_pkts, ARRAY_SIZE(bcm_recv_pkts));
|
2015-04-06 07:52:18 +02:00
|
|
|
if (IS_ERR(bcm->rx_skb)) {
|
|
|
|
int err = PTR_ERR(bcm->rx_skb);
|
2015-09-01 12:13:36 +02:00
|
|
|
bt_dev_err(hu->hdev, "Frame reassembly failed (%d)", err);
|
2015-06-17 14:10:39 +02:00
|
|
|
bcm->rx_skb = NULL;
|
2015-04-06 07:52:18 +02:00
|
|
|
return err;
|
2015-09-23 18:18:11 +02:00
|
|
|
} else if (!bcm->rx_skb) {
|
|
|
|
/* Delay auto-suspend when receiving completed packet */
|
|
|
|
mutex_lock(&bcm_device_lock);
|
2017-12-26 16:07:34 +01:00
|
|
|
if (bcm->dev && bcm_device_exists(bcm->dev))
|
|
|
|
pm_request_resume(bcm->dev->dev);
|
2015-09-23 18:18:11 +02:00
|
|
|
mutex_unlock(&bcm_device_lock);
|
2015-04-06 07:52:18 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int bcm_enqueue(struct hci_uart *hu, struct sk_buff *skb)
|
|
|
|
{
|
|
|
|
struct bcm_data *bcm = hu->priv;
|
|
|
|
|
2015-09-01 12:13:36 +02:00
|
|
|
bt_dev_dbg(hu->hdev, "hu %p skb %p", hu, skb);
|
2015-04-06 07:52:18 +02:00
|
|
|
|
|
|
|
/* Prepend skb with frame type */
|
2015-11-05 07:33:56 +01:00
|
|
|
memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
|
2015-04-06 07:52:18 +02:00
|
|
|
skb_queue_tail(&bcm->txq, skb);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct sk_buff *bcm_dequeue(struct hci_uart *hu)
|
|
|
|
{
|
|
|
|
struct bcm_data *bcm = hu->priv;
|
2015-09-23 18:18:11 +02:00
|
|
|
struct sk_buff *skb = NULL;
|
|
|
|
struct bcm_device *bdev = NULL;
|
|
|
|
|
|
|
|
mutex_lock(&bcm_device_lock);
|
|
|
|
|
|
|
|
if (bcm_device_exists(bcm->dev)) {
|
|
|
|
bdev = bcm->dev;
|
2017-10-04 20:43:39 +02:00
|
|
|
pm_runtime_get_sync(bdev->dev);
|
2015-09-23 18:18:11 +02:00
|
|
|
/* Shall be resumed here */
|
|
|
|
}
|
|
|
|
|
|
|
|
skb = skb_dequeue(&bcm->txq);
|
|
|
|
|
|
|
|
if (bdev) {
|
2017-10-04 20:43:39 +02:00
|
|
|
pm_runtime_mark_last_busy(bdev->dev);
|
|
|
|
pm_runtime_put_autosuspend(bdev->dev);
|
2015-09-23 18:18:11 +02:00
|
|
|
}
|
2015-04-06 07:52:18 +02:00
|
|
|
|
2015-09-23 18:18:11 +02:00
|
|
|
mutex_unlock(&bcm_device_lock);
|
|
|
|
|
|
|
|
return skb;
|
2015-04-06 07:52:18 +02:00
|
|
|
}
|
|
|
|
|
2015-09-23 18:18:09 +02:00
|
|
|
#ifdef CONFIG_PM
|
|
|
|
static int bcm_suspend_device(struct device *dev)
|
2015-08-11 16:35:38 +02:00
|
|
|
{
|
2017-10-04 20:43:42 +02:00
|
|
|
struct bcm_device *bdev = dev_get_drvdata(dev);
|
2015-08-11 16:35:38 +02:00
|
|
|
|
2015-09-23 18:18:09 +02:00
|
|
|
bt_dev_dbg(bdev, "");
|
2015-08-28 15:44:00 +02:00
|
|
|
|
2015-09-23 18:18:09 +02:00
|
|
|
if (!bdev->is_suspended && bdev->hu) {
|
2015-08-11 16:35:38 +02:00
|
|
|
hci_uart_set_flow_control(bdev->hu, true);
|
|
|
|
|
2015-09-23 18:18:09 +02:00
|
|
|
/* Once this returns, driver suspends BT via GPIO */
|
2015-08-11 16:35:38 +02:00
|
|
|
bdev->is_suspended = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Suspend the device */
|
2018-01-10 16:32:10 +01:00
|
|
|
bdev->set_device_wakeup(bdev, false);
|
Bluetooth: hci_bcm: Mandate presence of shutdown and device wake GPIO
Commit 0395ffc1ee05 ("Bluetooth: hci_bcm: Add PM for BCM devices")
amended this driver to request a shutdown and device wake GPIO on probe,
but mandated that only one of them need to be present:
/* Make sure at-least one of the GPIO is defined and that
* a name is specified for this instance
*/
if ((!dev->device_wakeup && !dev->shutdown) || !dev->name) {
dev_err(&pdev->dev, "invalid platform data\n");
return -EINVAL;
}
However the same commit added a call to bcm_gpio_set_power() to the
->probe hook, which unconditionally accesses *both* GPIOs. Luckily,
the resulting NULL pointer deref was never reported, suggesting there's
no machine where either GPIO is missing.
Commit 8a92056837fd ("Bluetooth: hci_bcm: Add (runtime)pm support to the
serdev driver") removed the check whether at least one of the GPIOs is
present without specifying a reason.
Because commit 62aaefa7d038 ("Bluetooth: hci_bcm: improve use of gpios
API") refactored the driver to use devm_gpiod_get_optional() instead of
devm_gpiod_get(), one is now tempted to believe that the driver doesn't
require *any* of the two GPIOs.
Which is wrong, the driver still requires both GPIOs to avoid a NULL
pointer deref. To this end, establish the status quo ante and request
the GPIOs with devm_gpiod_get() again. Bail out of ->probe if either
of them is missing.
Oddly enough, whereas bcm_gpio_set_power() accesses the device wake pin
unconditionally, bcm_suspend_device() and bcm_resume_device() do check
for its presence before accessing it. Those checks are superfluous,
so remove them.
Cc: Frédéric Danis <frederic.danis.oss@gmail.com>
Cc: Loic Poulain <loic.poulain@linaro.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2018-01-10 16:32:10 +01:00
|
|
|
bt_dev_dbg(bdev, "suspend, delaying 15 ms");
|
|
|
|
mdelay(15);
|
2015-08-11 16:35:38 +02:00
|
|
|
|
2015-09-23 18:18:09 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int bcm_resume_device(struct device *dev)
|
|
|
|
{
|
2017-10-04 20:43:42 +02:00
|
|
|
struct bcm_device *bdev = dev_get_drvdata(dev);
|
2015-09-23 18:18:09 +02:00
|
|
|
|
|
|
|
bt_dev_dbg(bdev, "");
|
|
|
|
|
2018-01-10 16:32:10 +01:00
|
|
|
bdev->set_device_wakeup(bdev, true);
|
Bluetooth: hci_bcm: Mandate presence of shutdown and device wake GPIO
Commit 0395ffc1ee05 ("Bluetooth: hci_bcm: Add PM for BCM devices")
amended this driver to request a shutdown and device wake GPIO on probe,
but mandated that only one of them need to be present:
/* Make sure at-least one of the GPIO is defined and that
* a name is specified for this instance
*/
if ((!dev->device_wakeup && !dev->shutdown) || !dev->name) {
dev_err(&pdev->dev, "invalid platform data\n");
return -EINVAL;
}
However the same commit added a call to bcm_gpio_set_power() to the
->probe hook, which unconditionally accesses *both* GPIOs. Luckily,
the resulting NULL pointer deref was never reported, suggesting there's
no machine where either GPIO is missing.
Commit 8a92056837fd ("Bluetooth: hci_bcm: Add (runtime)pm support to the
serdev driver") removed the check whether at least one of the GPIOs is
present without specifying a reason.
Because commit 62aaefa7d038 ("Bluetooth: hci_bcm: improve use of gpios
API") refactored the driver to use devm_gpiod_get_optional() instead of
devm_gpiod_get(), one is now tempted to believe that the driver doesn't
require *any* of the two GPIOs.
Which is wrong, the driver still requires both GPIOs to avoid a NULL
pointer deref. To this end, establish the status quo ante and request
the GPIOs with devm_gpiod_get() again. Bail out of ->probe if either
of them is missing.
Oddly enough, whereas bcm_gpio_set_power() accesses the device wake pin
unconditionally, bcm_suspend_device() and bcm_resume_device() do check
for its presence before accessing it. Those checks are superfluous,
so remove them.
Cc: Frédéric Danis <frederic.danis.oss@gmail.com>
Cc: Loic Poulain <loic.poulain@linaro.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2018-01-10 16:32:10 +01:00
|
|
|
bt_dev_dbg(bdev, "resume, delaying 15 ms");
|
|
|
|
mdelay(15);
|
2015-09-23 18:18:09 +02:00
|
|
|
|
|
|
|
/* 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
|
2017-10-04 20:43:43 +02:00
|
|
|
/* suspend callback */
|
2015-09-23 18:18:09 +02:00
|
|
|
static int bcm_suspend(struct device *dev)
|
|
|
|
{
|
2017-10-04 20:43:42 +02:00
|
|
|
struct bcm_device *bdev = dev_get_drvdata(dev);
|
2015-09-23 18:18:09 +02:00
|
|
|
int error;
|
|
|
|
|
|
|
|
bt_dev_dbg(bdev, "suspend: is_suspended %d", bdev->is_suspended);
|
|
|
|
|
2017-10-04 20:43:43 +02:00
|
|
|
/*
|
|
|
|
* 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
|
2015-09-23 18:18:09 +02:00
|
|
|
* and device_wake-up GPIO.
|
|
|
|
*/
|
|
|
|
mutex_lock(&bcm_device_lock);
|
|
|
|
|
|
|
|
if (!bdev->hu)
|
|
|
|
goto unlock;
|
|
|
|
|
2015-09-23 18:18:11 +02:00
|
|
|
if (pm_runtime_active(dev))
|
|
|
|
bcm_suspend_device(dev);
|
2015-09-23 18:18:09 +02:00
|
|
|
|
2018-01-10 16:32:10 +01:00
|
|
|
if (device_may_wakeup(dev) && bdev->irq > 0) {
|
2015-09-04 15:35:44 +02:00
|
|
|
error = enable_irq_wake(bdev->irq);
|
|
|
|
if (!error)
|
|
|
|
bt_dev_dbg(bdev, "BCM irq: enabled");
|
|
|
|
}
|
|
|
|
|
2015-08-28 15:44:00 +02:00
|
|
|
unlock:
|
2015-09-01 12:13:35 +02:00
|
|
|
mutex_unlock(&bcm_device_lock);
|
2015-08-28 15:44:00 +02:00
|
|
|
|
2015-08-11 16:35:38 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2017-10-04 20:43:43 +02:00
|
|
|
/* resume callback */
|
2015-08-11 16:35:38 +02:00
|
|
|
static int bcm_resume(struct device *dev)
|
|
|
|
{
|
2017-10-04 20:43:42 +02:00
|
|
|
struct bcm_device *bdev = dev_get_drvdata(dev);
|
2015-08-11 16:35:38 +02:00
|
|
|
|
2015-09-01 12:13:36 +02:00
|
|
|
bt_dev_dbg(bdev, "resume: is_suspended %d", bdev->is_suspended);
|
2015-08-11 16:35:38 +02:00
|
|
|
|
2017-10-04 20:43:43 +02:00
|
|
|
/*
|
|
|
|
* 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
|
2015-09-23 18:18:09 +02:00
|
|
|
* and device_wake-up GPIO.
|
|
|
|
*/
|
2015-09-01 12:13:35 +02:00
|
|
|
mutex_lock(&bcm_device_lock);
|
2015-08-28 15:44:00 +02:00
|
|
|
|
|
|
|
if (!bdev->hu)
|
|
|
|
goto unlock;
|
|
|
|
|
2018-01-10 16:32:10 +01:00
|
|
|
if (device_may_wakeup(dev) && bdev->irq > 0) {
|
2015-09-04 15:35:44 +02:00
|
|
|
disable_irq_wake(bdev->irq);
|
|
|
|
bt_dev_dbg(bdev, "BCM irq: disabled");
|
|
|
|
}
|
|
|
|
|
2015-09-23 18:18:09 +02:00
|
|
|
bcm_resume_device(dev);
|
2015-08-11 16:35:38 +02:00
|
|
|
|
2015-08-28 15:44:00 +02:00
|
|
|
unlock:
|
2015-09-01 12:13:35 +02:00
|
|
|
mutex_unlock(&bcm_device_lock);
|
2015-08-28 15:44:00 +02:00
|
|
|
|
2015-09-23 18:18:11 +02:00
|
|
|
pm_runtime_disable(dev);
|
|
|
|
pm_runtime_set_active(dev);
|
|
|
|
pm_runtime_enable(dev);
|
|
|
|
|
2015-08-11 16:35:38 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2017-01-05 18:10:54 +01:00
|
|
|
static const struct acpi_gpio_params int_last_device_wakeup_gpios = { 0, 0, false };
|
|
|
|
static const struct acpi_gpio_params int_last_shutdown_gpios = { 1, 0, false };
|
|
|
|
static const struct acpi_gpio_params int_last_host_wakeup_gpios = { 2, 0, false };
|
|
|
|
|
|
|
|
static const struct acpi_gpio_mapping acpi_bcm_int_last_gpios[] = {
|
|
|
|
{ "device-wakeup-gpios", &int_last_device_wakeup_gpios, 1 },
|
|
|
|
{ "shutdown-gpios", &int_last_shutdown_gpios, 1 },
|
|
|
|
{ "host-wakeup-gpios", &int_last_host_wakeup_gpios, 1 },
|
|
|
|
{ },
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct acpi_gpio_params int_first_host_wakeup_gpios = { 0, 0, false };
|
|
|
|
static const struct acpi_gpio_params int_first_device_wakeup_gpios = { 1, 0, false };
|
|
|
|
static const struct acpi_gpio_params int_first_shutdown_gpios = { 2, 0, false };
|
|
|
|
|
|
|
|
static const struct acpi_gpio_mapping acpi_bcm_int_first_gpios[] = {
|
|
|
|
{ "device-wakeup-gpios", &int_first_device_wakeup_gpios, 1 },
|
|
|
|
{ "shutdown-gpios", &int_first_shutdown_gpios, 1 },
|
|
|
|
{ "host-wakeup-gpios", &int_first_host_wakeup_gpios, 1 },
|
2015-08-11 16:35:35 +02:00
|
|
|
{ },
|
|
|
|
};
|
|
|
|
|
2015-08-12 12:46:01 +02:00
|
|
|
#ifdef CONFIG_ACPI
|
2015-09-23 18:18:08 +02:00
|
|
|
/* IRQ polarity of some chipsets are not defined correctly in ACPI table. */
|
2017-10-04 20:43:36 +02:00
|
|
|
static const struct dmi_system_id bcm_active_low_irq_dmi_table[] = {
|
2015-09-23 18:18:08 +02:00
|
|
|
{
|
|
|
|
.ident = "Asus T100TA",
|
|
|
|
.matches = {
|
|
|
|
DMI_EXACT_MATCH(DMI_SYS_VENDOR,
|
|
|
|
"ASUSTeK COMPUTER INC."),
|
|
|
|
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100TA"),
|
|
|
|
},
|
|
|
|
},
|
2017-06-29 14:21:32 +02:00
|
|
|
{
|
|
|
|
.ident = "Asus T100CHI",
|
|
|
|
.matches = {
|
|
|
|
DMI_EXACT_MATCH(DMI_SYS_VENDOR,
|
|
|
|
"ASUSTeK COMPUTER INC."),
|
|
|
|
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100CHI"),
|
|
|
|
},
|
|
|
|
},
|
2016-10-09 15:51:05 +02:00
|
|
|
{ /* Handle ThinkPad 8 tablets with BCM2E55 chipset ACPI ID */
|
|
|
|
.ident = "Lenovo ThinkPad 8",
|
|
|
|
.matches = {
|
|
|
|
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
|
|
|
|
DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "ThinkPad 8"),
|
|
|
|
},
|
|
|
|
},
|
Bluetooth: hci_bcm: Add support for MINIX Z83-4 based devices
The MINIX NEO Z83-4 and MINIX NEO Z83-4 Pro devices use an AP6255 chip for
wifi and bluetooth. Bluetooth requires an ACPI device id of BCM2EA4 with
BCM4345 rev C0 firmware.
This patch adds the device id and to use trigger type IRQF_TRIGGER_FALLING
as defined by 'GpioInt' in the ACPI DSDT table:
Device (BLT0)
{
Name (_HID, "BCM2EA4") // _HID: Hardware ID
Method (_STA, 0, NotSerialized) // _STA: Status
{
Return (0x0F)
}
Method (_CRS, 0, NotSerialized) // _CRS: Current Resource Settings
{
Name (UBUF, ResourceTemplate ()
{
UartSerialBusV2 (0x0001C200, DataBitsEight, StopBitsOne,
0xFC, LittleEndian, ParityTypeNone, FlowControlHardware,
0x0020, 0x0020, "\\_SB.PCI0.URT1",
0x00, ResourceConsumer, , Exclusive,
)
GpioInt (Level, ActiveLow, Exclusive, PullNone, 0x0000,
"\\_SB.GPO1", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x0005
}
GpioIo (Exclusive, PullDefault, 0x0000, 0x0000, IoRestrictionOutputOnly,
"\\_SB.GPO1", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x0007
}
GpioIo (Exclusive, PullDefault, 0x0000, 0x0000, IoRestrictionOutputOnly,
"\\_SB.GPO1", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x0004
}
})
Return (UBUF) /* \_SB_.PCI0.URT1.BLT0._CRS.UBUF */
}
}
Signed-off-by: Ian W MORRISON <ianwmorrison@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2017-10-07 08:15:25 +02:00
|
|
|
{
|
|
|
|
.ident = "MINIX Z83-4",
|
|
|
|
.matches = {
|
|
|
|
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "MINIX"),
|
|
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Z83-4"),
|
|
|
|
},
|
|
|
|
},
|
2015-09-23 18:18:08 +02:00
|
|
|
{ }
|
|
|
|
};
|
|
|
|
|
2015-08-11 16:35:37 +02:00
|
|
|
static int bcm_resource(struct acpi_resource *ares, void *data)
|
|
|
|
{
|
|
|
|
struct bcm_device *dev = data;
|
2015-09-04 15:35:44 +02:00
|
|
|
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;
|
2017-10-04 20:43:36 +02:00
|
|
|
dev->irq_active_low = irq->polarity == ACPI_ACTIVE_LOW;
|
2015-09-04 15:35:44 +02:00
|
|
|
break;
|
|
|
|
|
|
|
|
case ACPI_RESOURCE_TYPE_GPIO:
|
|
|
|
gpio = &ares->data.gpio;
|
|
|
|
if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT)
|
2017-10-04 20:43:36 +02:00
|
|
|
dev->irq_active_low = gpio->polarity == ACPI_ACTIVE_LOW;
|
2015-09-04 15:35:44 +02:00
|
|
|
break;
|
|
|
|
|
|
|
|
case ACPI_RESOURCE_TYPE_SERIAL_BUS:
|
2015-08-11 16:35:37 +02:00
|
|
|
sb = &ares->data.uart_serial_bus;
|
2017-08-16 09:53:30 +02:00
|
|
|
if (sb->type == ACPI_RESOURCE_SERIAL_TYPE_UART) {
|
2015-08-11 16:35:37 +02:00
|
|
|
dev->init_speed = sb->default_baud_rate;
|
2017-08-16 09:53:30 +02:00
|
|
|
dev->oper_speed = 4000000;
|
|
|
|
}
|
2015-09-04 15:35:44 +02:00
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
break;
|
2015-08-11 16:35:37 +02:00
|
|
|
}
|
|
|
|
|
2017-10-04 20:43:41 +02:00
|
|
|
return 0;
|
2015-08-11 16:35:37 +02:00
|
|
|
}
|
2017-03-10 13:28:20 +01:00
|
|
|
#endif /* CONFIG_ACPI */
|
2015-08-11 16:35:37 +02:00
|
|
|
|
2018-01-10 16:32:10 +01:00
|
|
|
static int bcm_gpio_set_device_wakeup(struct bcm_device *dev, bool awake)
|
|
|
|
{
|
|
|
|
gpiod_set_value(dev->device_wakeup, awake);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int bcm_gpio_set_shutdown(struct bcm_device *dev, bool powered)
|
|
|
|
{
|
|
|
|
gpiod_set_value(dev->shutdown, powered);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2017-10-04 20:43:40 +02:00
|
|
|
static int bcm_get_resources(struct bcm_device *dev)
|
2015-08-11 16:35:35 +02:00
|
|
|
{
|
2017-10-04 20:43:39 +02:00
|
|
|
dev->name = dev_name(dev->dev);
|
2015-08-11 16:35:35 +02:00
|
|
|
|
2017-10-04 20:43:39 +02:00
|
|
|
dev->clk = devm_clk_get(dev->dev, NULL);
|
2017-01-05 18:10:54 +01:00
|
|
|
|
Bluetooth: hci_bcm: Mandate presence of shutdown and device wake GPIO
Commit 0395ffc1ee05 ("Bluetooth: hci_bcm: Add PM for BCM devices")
amended this driver to request a shutdown and device wake GPIO on probe,
but mandated that only one of them need to be present:
/* Make sure at-least one of the GPIO is defined and that
* a name is specified for this instance
*/
if ((!dev->device_wakeup && !dev->shutdown) || !dev->name) {
dev_err(&pdev->dev, "invalid platform data\n");
return -EINVAL;
}
However the same commit added a call to bcm_gpio_set_power() to the
->probe hook, which unconditionally accesses *both* GPIOs. Luckily,
the resulting NULL pointer deref was never reported, suggesting there's
no machine where either GPIO is missing.
Commit 8a92056837fd ("Bluetooth: hci_bcm: Add (runtime)pm support to the
serdev driver") removed the check whether at least one of the GPIOs is
present without specifying a reason.
Because commit 62aaefa7d038 ("Bluetooth: hci_bcm: improve use of gpios
API") refactored the driver to use devm_gpiod_get_optional() instead of
devm_gpiod_get(), one is now tempted to believe that the driver doesn't
require *any* of the two GPIOs.
Which is wrong, the driver still requires both GPIOs to avoid a NULL
pointer deref. To this end, establish the status quo ante and request
the GPIOs with devm_gpiod_get() again. Bail out of ->probe if either
of them is missing.
Oddly enough, whereas bcm_gpio_set_power() accesses the device wake pin
unconditionally, bcm_suspend_device() and bcm_resume_device() do check
for its presence before accessing it. Those checks are superfluous,
so remove them.
Cc: Frédéric Danis <frederic.danis.oss@gmail.com>
Cc: Loic Poulain <loic.poulain@linaro.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2018-01-10 16:32:10 +01:00
|
|
|
dev->device_wakeup = devm_gpiod_get(dev->dev, "device-wakeup",
|
|
|
|
GPIOD_OUT_LOW);
|
2015-08-12 09:20:56 +02:00
|
|
|
if (IS_ERR(dev->device_wakeup))
|
|
|
|
return PTR_ERR(dev->device_wakeup);
|
2015-08-11 16:35:35 +02:00
|
|
|
|
Bluetooth: hci_bcm: Mandate presence of shutdown and device wake GPIO
Commit 0395ffc1ee05 ("Bluetooth: hci_bcm: Add PM for BCM devices")
amended this driver to request a shutdown and device wake GPIO on probe,
but mandated that only one of them need to be present:
/* Make sure at-least one of the GPIO is defined and that
* a name is specified for this instance
*/
if ((!dev->device_wakeup && !dev->shutdown) || !dev->name) {
dev_err(&pdev->dev, "invalid platform data\n");
return -EINVAL;
}
However the same commit added a call to bcm_gpio_set_power() to the
->probe hook, which unconditionally accesses *both* GPIOs. Luckily,
the resulting NULL pointer deref was never reported, suggesting there's
no machine where either GPIO is missing.
Commit 8a92056837fd ("Bluetooth: hci_bcm: Add (runtime)pm support to the
serdev driver") removed the check whether at least one of the GPIOs is
present without specifying a reason.
Because commit 62aaefa7d038 ("Bluetooth: hci_bcm: improve use of gpios
API") refactored the driver to use devm_gpiod_get_optional() instead of
devm_gpiod_get(), one is now tempted to believe that the driver doesn't
require *any* of the two GPIOs.
Which is wrong, the driver still requires both GPIOs to avoid a NULL
pointer deref. To this end, establish the status quo ante and request
the GPIOs with devm_gpiod_get() again. Bail out of ->probe if either
of them is missing.
Oddly enough, whereas bcm_gpio_set_power() accesses the device wake pin
unconditionally, bcm_suspend_device() and bcm_resume_device() do check
for its presence before accessing it. Those checks are superfluous,
so remove them.
Cc: Frédéric Danis <frederic.danis.oss@gmail.com>
Cc: Loic Poulain <loic.poulain@linaro.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2018-01-10 16:32:10 +01:00
|
|
|
dev->shutdown = devm_gpiod_get(dev->dev, "shutdown", GPIOD_OUT_LOW);
|
2015-08-12 09:20:56 +02:00
|
|
|
if (IS_ERR(dev->shutdown))
|
|
|
|
return PTR_ERR(dev->shutdown);
|
2015-08-11 16:35:35 +02:00
|
|
|
|
2018-01-10 16:32:10 +01:00
|
|
|
dev->set_device_wakeup = bcm_gpio_set_device_wakeup;
|
|
|
|
dev->set_shutdown = bcm_gpio_set_shutdown;
|
|
|
|
|
2015-09-04 15:35:44 +02:00
|
|
|
/* IRQ can be declared in ACPI table as Interrupt or GpioInt */
|
|
|
|
if (dev->irq <= 0) {
|
|
|
|
struct gpio_desc *gpio;
|
|
|
|
|
2017-10-04 20:43:39 +02:00
|
|
|
gpio = devm_gpiod_get_optional(dev->dev, "host-wakeup",
|
2015-09-04 15:35:44 +02:00
|
|
|
GPIOD_IN);
|
|
|
|
if (IS_ERR(gpio))
|
|
|
|
return PTR_ERR(gpio);
|
|
|
|
|
|
|
|
dev->irq = gpiod_to_irq(gpio);
|
|
|
|
}
|
|
|
|
|
2017-10-04 20:43:39 +02:00
|
|
|
dev_info(dev->dev, "BCM irq: %d\n", dev->irq);
|
2017-03-10 13:28:20 +01:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_ACPI
|
|
|
|
static int bcm_acpi_probe(struct bcm_device *dev)
|
|
|
|
{
|
|
|
|
LIST_HEAD(resources);
|
|
|
|
const struct dmi_system_id *dmi_id;
|
|
|
|
const struct acpi_gpio_mapping *gpio_mapping = acpi_bcm_int_last_gpios;
|
|
|
|
const struct acpi_device_id *id;
|
2017-10-04 20:43:41 +02:00
|
|
|
struct resource_entry *entry;
|
2017-03-10 13:28:20 +01:00
|
|
|
int ret;
|
|
|
|
|
|
|
|
/* Retrieve GPIO data */
|
2017-10-04 20:43:39 +02:00
|
|
|
id = acpi_match_device(dev->dev->driver->acpi_match_table, dev->dev);
|
2017-03-10 13:28:20 +01:00
|
|
|
if (id)
|
|
|
|
gpio_mapping = (const struct acpi_gpio_mapping *) id->driver_data;
|
|
|
|
|
2017-10-04 20:43:39 +02:00
|
|
|
ret = devm_acpi_dev_add_driver_gpios(dev->dev, gpio_mapping);
|
2017-03-10 13:28:20 +01:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
2015-08-11 16:35:37 +02:00
|
|
|
/* Retrieve UART ACPI info */
|
2017-10-04 20:43:39 +02:00
|
|
|
ret = acpi_dev_get_resources(ACPI_COMPANION(dev->dev),
|
2015-09-30 15:26:45 +02:00
|
|
|
&resources, bcm_resource, dev);
|
2015-09-30 15:26:42 +02:00
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
2017-10-04 20:43:41 +02:00
|
|
|
|
|
|
|
resource_list_for_each_entry(entry, &resources) {
|
|
|
|
if (resource_type(entry->res) == IORESOURCE_IRQ) {
|
|
|
|
dev->irq = entry->res->start;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
2015-09-30 15:26:41 +02:00
|
|
|
acpi_dev_free_resource_list(&resources);
|
2015-08-11 16:35:37 +02:00
|
|
|
|
2017-10-04 20:43:36 +02:00
|
|
|
dmi_id = dmi_first_match(bcm_active_low_irq_dmi_table);
|
2015-09-23 18:18:08 +02:00
|
|
|
if (dmi_id) {
|
2017-10-07 08:16:08 +02:00
|
|
|
dev_warn(dev->dev, "%s: Overwriting IRQ polarity to active low",
|
2015-09-23 18:18:08 +02:00
|
|
|
dmi_id->ident);
|
2017-10-04 20:43:36 +02:00
|
|
|
dev->irq_active_low = true;
|
2015-09-23 18:18:08 +02:00
|
|
|
}
|
|
|
|
|
2015-08-11 16:35:35 +02:00
|
|
|
return 0;
|
|
|
|
}
|
2015-08-12 12:46:01 +02:00
|
|
|
#else
|
|
|
|
static int bcm_acpi_probe(struct bcm_device *dev)
|
|
|
|
{
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
#endif /* CONFIG_ACPI */
|
2015-08-11 16:35:35 +02:00
|
|
|
|
2017-10-04 20:43:43 +02:00
|
|
|
static int bcm_of_probe(struct bcm_device *bdev)
|
|
|
|
{
|
|
|
|
device_property_read_u32(bdev->dev, "max-speed", &bdev->oper_speed);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-08-11 16:35:35 +02:00
|
|
|
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;
|
|
|
|
|
2017-10-04 20:43:39 +02:00
|
|
|
dev->dev = &pdev->dev;
|
2017-10-04 20:43:38 +02:00
|
|
|
dev->irq = platform_get_irq(pdev, 0);
|
2015-08-11 16:35:35 +02:00
|
|
|
|
2017-10-04 20:43:37 +02:00
|
|
|
if (has_acpi_companion(&pdev->dev)) {
|
2017-03-10 13:28:20 +01:00
|
|
|
ret = bcm_acpi_probe(dev);
|
2017-10-04 20:43:37 +02:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2017-10-04 20:43:40 +02:00
|
|
|
ret = bcm_get_resources(dev);
|
2015-09-30 15:26:44 +02:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
2015-08-11 16:35:35 +02:00
|
|
|
|
|
|
|
platform_set_drvdata(pdev, dev);
|
|
|
|
|
|
|
|
dev_info(&pdev->dev, "%s device registered.\n", dev->name);
|
|
|
|
|
|
|
|
/* Place this instance on the device list */
|
2015-09-01 12:13:35 +02:00
|
|
|
mutex_lock(&bcm_device_lock);
|
2015-08-11 16:35:35 +02:00
|
|
|
list_add_tail(&dev->list, &bcm_device_list);
|
2015-09-01 12:13:35 +02:00
|
|
|
mutex_unlock(&bcm_device_lock);
|
2015-08-11 16:35:35 +02:00
|
|
|
|
|
|
|
bcm_gpio_set_power(dev, false);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int bcm_remove(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
struct bcm_device *dev = platform_get_drvdata(pdev);
|
|
|
|
|
2015-09-01 12:13:35 +02:00
|
|
|
mutex_lock(&bcm_device_lock);
|
2015-08-11 16:35:35 +02:00
|
|
|
list_del(&dev->list);
|
2015-09-01 12:13:35 +02:00
|
|
|
mutex_unlock(&bcm_device_lock);
|
2015-08-11 16:35:35 +02:00
|
|
|
|
|
|
|
dev_info(&pdev->dev, "%s device unregistered.\n", dev->name);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-04-06 07:52:18 +02:00
|
|
|
static const struct hci_uart_proto bcm_proto = {
|
|
|
|
.id = HCI_UART_BCM,
|
2016-09-19 12:05:12 +02:00
|
|
|
.name = "Broadcom",
|
2015-10-20 21:30:45 +02:00
|
|
|
.manufacturer = 15,
|
2015-06-09 16:15:37 +02:00
|
|
|
.init_speed = 115200,
|
2015-04-06 07:52:18 +02:00
|
|
|
.open = bcm_open,
|
|
|
|
.close = bcm_close,
|
|
|
|
.flush = bcm_flush,
|
|
|
|
.setup = bcm_setup,
|
2015-06-09 16:15:37 +02:00
|
|
|
.set_baudrate = bcm_set_baudrate,
|
2015-04-06 07:52:18 +02:00
|
|
|
.recv = bcm_recv,
|
|
|
|
.enqueue = bcm_enqueue,
|
|
|
|
.dequeue = bcm_dequeue,
|
|
|
|
};
|
|
|
|
|
2015-08-11 16:35:35 +02:00
|
|
|
#ifdef CONFIG_ACPI
|
|
|
|
static const struct acpi_device_id bcm_acpi_match[] = {
|
2017-01-05 18:10:54 +01:00
|
|
|
{ "BCM2E1A", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
|
|
|
|
{ "BCM2E39", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
|
|
|
|
{ "BCM2E3A", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
|
|
|
|
{ "BCM2E3D", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
|
|
|
|
{ "BCM2E3F", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
|
|
|
|
{ "BCM2E40", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
|
|
|
|
{ "BCM2E54", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
|
|
|
|
{ "BCM2E55", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
|
|
|
|
{ "BCM2E64", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
|
|
|
|
{ "BCM2E65", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
|
|
|
|
{ "BCM2E67", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
|
|
|
|
{ "BCM2E71", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
|
2017-11-22 14:37:28 +01:00
|
|
|
{ "BCM2E72", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
|
2017-01-05 18:10:54 +01:00
|
|
|
{ "BCM2E7B", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
|
|
|
|
{ "BCM2E7C", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
|
2017-10-13 17:54:02 +02:00
|
|
|
{ "BCM2E7E", (kernel_ulong_t)&acpi_bcm_int_first_gpios },
|
2017-01-05 18:10:54 +01:00
|
|
|
{ "BCM2E95", (kernel_ulong_t)&acpi_bcm_int_first_gpios },
|
|
|
|
{ "BCM2E96", (kernel_ulong_t)&acpi_bcm_int_first_gpios },
|
Bluetooth: hci_bcm: Add support for MINIX Z83-4 based devices
The MINIX NEO Z83-4 and MINIX NEO Z83-4 Pro devices use an AP6255 chip for
wifi and bluetooth. Bluetooth requires an ACPI device id of BCM2EA4 with
BCM4345 rev C0 firmware.
This patch adds the device id and to use trigger type IRQF_TRIGGER_FALLING
as defined by 'GpioInt' in the ACPI DSDT table:
Device (BLT0)
{
Name (_HID, "BCM2EA4") // _HID: Hardware ID
Method (_STA, 0, NotSerialized) // _STA: Status
{
Return (0x0F)
}
Method (_CRS, 0, NotSerialized) // _CRS: Current Resource Settings
{
Name (UBUF, ResourceTemplate ()
{
UartSerialBusV2 (0x0001C200, DataBitsEight, StopBitsOne,
0xFC, LittleEndian, ParityTypeNone, FlowControlHardware,
0x0020, 0x0020, "\\_SB.PCI0.URT1",
0x00, ResourceConsumer, , Exclusive,
)
GpioInt (Level, ActiveLow, Exclusive, PullNone, 0x0000,
"\\_SB.GPO1", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x0005
}
GpioIo (Exclusive, PullDefault, 0x0000, 0x0000, IoRestrictionOutputOnly,
"\\_SB.GPO1", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x0007
}
GpioIo (Exclusive, PullDefault, 0x0000, 0x0000, IoRestrictionOutputOnly,
"\\_SB.GPO1", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x0004
}
})
Return (UBUF) /* \_SB_.PCI0.URT1.BLT0._CRS.UBUF */
}
}
Signed-off-by: Ian W MORRISON <ianwmorrison@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2017-10-07 08:15:25 +02:00
|
|
|
{ "BCM2EA4", (kernel_ulong_t)&acpi_bcm_int_first_gpios },
|
2015-08-11 16:35:35 +02:00
|
|
|
{ },
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(acpi, bcm_acpi_match);
|
|
|
|
#endif
|
|
|
|
|
2017-10-04 20:43:43 +02:00
|
|
|
/* suspend and resume callbacks */
|
2015-09-23 18:18:11 +02:00
|
|
|
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)
|
|
|
|
};
|
2015-08-11 16:35:38 +02:00
|
|
|
|
2015-08-11 16:35:35 +02:00
|
|
|
static struct platform_driver bcm_driver = {
|
|
|
|
.probe = bcm_probe,
|
|
|
|
.remove = bcm_remove,
|
|
|
|
.driver = {
|
|
|
|
.name = "hci_bcm",
|
|
|
|
.acpi_match_table = ACPI_PTR(bcm_acpi_match),
|
2015-08-11 16:35:38 +02:00
|
|
|
.pm = &bcm_pm_ops,
|
2015-08-11 16:35:35 +02:00
|
|
|
},
|
|
|
|
};
|
|
|
|
|
2017-08-17 19:59:51 +02:00
|
|
|
static int bcm_serdev_probe(struct serdev_device *serdev)
|
|
|
|
{
|
2017-10-04 20:43:43 +02:00
|
|
|
struct bcm_device *bcmdev;
|
2017-08-17 19:59:51 +02:00
|
|
|
int err;
|
|
|
|
|
|
|
|
bcmdev = devm_kzalloc(&serdev->dev, sizeof(*bcmdev), GFP_KERNEL);
|
|
|
|
if (!bcmdev)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2017-10-04 20:43:43 +02:00
|
|
|
bcmdev->dev = &serdev->dev;
|
2017-10-11 15:46:21 +02:00
|
|
|
#ifdef CONFIG_PM
|
2017-10-04 20:43:43 +02:00
|
|
|
bcmdev->hu = &bcmdev->serdev_hu;
|
2017-10-11 15:46:21 +02:00
|
|
|
#endif
|
2017-10-04 20:43:43 +02:00
|
|
|
bcmdev->serdev_hu.serdev = serdev;
|
2017-08-17 19:59:51 +02:00
|
|
|
serdev_device_set_drvdata(serdev, bcmdev);
|
|
|
|
|
2017-10-04 20:43:43 +02:00
|
|
|
if (has_acpi_companion(&serdev->dev))
|
|
|
|
err = bcm_acpi_probe(bcmdev);
|
|
|
|
else
|
|
|
|
err = bcm_of_probe(bcmdev);
|
|
|
|
if (err)
|
|
|
|
return err;
|
2017-08-17 19:59:51 +02:00
|
|
|
|
2017-10-04 20:43:43 +02:00
|
|
|
err = bcm_get_resources(bcmdev);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
|
|
|
|
bcm_gpio_set_power(bcmdev, false);
|
|
|
|
|
|
|
|
return hci_uart_register_device(&bcmdev->serdev_hu, &bcm_proto);
|
2017-08-17 19:59:51 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
static void bcm_serdev_remove(struct serdev_device *serdev)
|
|
|
|
{
|
2017-10-04 20:43:43 +02:00
|
|
|
struct bcm_device *bcmdev = serdev_device_get_drvdata(serdev);
|
2017-08-17 19:59:51 +02:00
|
|
|
|
2017-10-04 20:43:43 +02:00
|
|
|
hci_uart_unregister_device(&bcmdev->serdev_hu);
|
2017-08-17 19:59:51 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_OF
|
|
|
|
static const struct of_device_id bcm_bluetooth_of_match[] = {
|
|
|
|
{ .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),
|
2017-10-04 20:43:43 +02:00
|
|
|
.acpi_match_table = ACPI_PTR(bcm_acpi_match),
|
|
|
|
.pm = &bcm_pm_ops,
|
2017-08-17 19:59:51 +02:00
|
|
|
},
|
|
|
|
};
|
|
|
|
|
2015-04-06 07:52:18 +02:00
|
|
|
int __init bcm_init(void)
|
|
|
|
{
|
2017-08-17 19:59:51 +02:00
|
|
|
/* For now, we need to keep both platform device
|
|
|
|
* driver (ACPI generated) and serdev driver (DT).
|
|
|
|
*/
|
2015-08-11 16:35:35 +02:00
|
|
|
platform_driver_register(&bcm_driver);
|
2017-08-17 19:59:51 +02:00
|
|
|
serdev_device_driver_register(&bcm_serdev_driver);
|
2015-08-11 16:35:35 +02:00
|
|
|
|
2015-04-06 07:52:18 +02:00
|
|
|
return hci_uart_register_proto(&bcm_proto);
|
|
|
|
}
|
|
|
|
|
|
|
|
int __exit bcm_deinit(void)
|
|
|
|
{
|
2015-08-11 16:35:35 +02:00
|
|
|
platform_driver_unregister(&bcm_driver);
|
2017-08-17 19:59:51 +02:00
|
|
|
serdev_device_driver_unregister(&bcm_serdev_driver);
|
2015-08-11 16:35:35 +02:00
|
|
|
|
2015-04-06 07:52:18 +02:00
|
|
|
return hci_uart_unregister_proto(&bcm_proto);
|
|
|
|
}
|