^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Bluetooth HCI UART driver for Broadcom devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2015 Intel Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/firmware.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/of_irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/property.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/platform_data/x86/apple.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/regulator/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/clk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/gpio/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/tty.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/dmi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/pm_runtime.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/serdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <net/bluetooth/bluetooth.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <net/bluetooth/hci_core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include "btbcm.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include "hci_uart.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define BCM_NULL_PKT 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define BCM_NULL_SIZE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define BCM_LM_DIAG_PKT 0x07
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define BCM_LM_DIAG_SIZE 63
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define BCM_TYPE49_PKT 0x31
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define BCM_TYPE49_SIZE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define BCM_TYPE52_PKT 0x34
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define BCM_TYPE52_SIZE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define BCM_AUTOSUSPEND_DELAY 5000 /* default autosleep delay */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define BCM_NUM_SUPPLIES 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * struct bcm_device_data - device specific data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * @no_early_set_baudrate: Disallow set baudrate before driver setup()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct bcm_device_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) bool no_early_set_baudrate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) bool drive_rts_on_open;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * struct bcm_device - device driver resources
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * @serdev_hu: HCI UART controller struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * @list: bcm_device_list node
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * @dev: physical UART slave
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * @name: device name logged by bt_dev_*() functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * @device_wakeup: BT_WAKE pin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * assert = Bluetooth device must wake up or remain awake,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * deassert = Bluetooth device may sleep when sleep criteria are met
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * @shutdown: BT_REG_ON pin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * power up or power down Bluetooth device internal regulators
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * @set_device_wakeup: callback to toggle BT_WAKE pin
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * either by accessing @device_wakeup or by calling @btlp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * @set_shutdown: callback to toggle BT_REG_ON pin
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * either by accessing @shutdown or by calling @btpu/@btpd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * @btlp: Apple ACPI method to toggle BT_WAKE pin ("Bluetooth Low Power")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * @btpu: Apple ACPI method to drive BT_REG_ON pin high ("Bluetooth Power Up")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * @btpd: Apple ACPI method to drive BT_REG_ON pin low ("Bluetooth Power Down")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * @txco_clk: external reference frequency clock used by Bluetooth device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * @lpo_clk: external LPO clock used by Bluetooth device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * @supplies: VBAT and VDDIO supplies used by Bluetooth device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * @res_enabled: whether clocks and supplies are prepared and enabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * @init_speed: default baudrate of Bluetooth device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * the host UART is initially set to this baudrate so that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * it can configure the Bluetooth device for @oper_speed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * @oper_speed: preferred baudrate of Bluetooth device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * set to 0 if @init_speed is already the preferred baudrate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * @irq: interrupt triggered by HOST_WAKE_BT pin
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * @irq_active_low: whether @irq is active low
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * @hu: pointer to HCI UART controller struct,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * used to disable flow control during runtime suspend and system sleep
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * @is_suspended: whether flow control is currently disabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * @no_early_set_baudrate: don't set_baudrate before setup()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) struct bcm_device {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) /* Must be the first member, hci_serdev.c expects this. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct hci_uart serdev_hu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct gpio_desc *device_wakeup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) struct gpio_desc *shutdown;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) int (*set_device_wakeup)(struct bcm_device *, bool);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) int (*set_shutdown)(struct bcm_device *, bool);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #ifdef CONFIG_ACPI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) acpi_handle btlp, btpu, btpd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) int gpio_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) int gpio_int_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) struct clk *txco_clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) struct clk *lpo_clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct regulator_bulk_data supplies[BCM_NUM_SUPPLIES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) bool res_enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) u32 init_speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) u32 oper_speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) bool irq_active_low;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) bool irq_acquired;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct hci_uart *hu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) bool is_suspended;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) bool no_early_set_baudrate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) bool drive_rts_on_open;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) u8 pcm_int_params[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) /* generic bcm uart resources */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) struct bcm_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) struct sk_buff *rx_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) struct sk_buff_head txq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) struct bcm_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) /* List of BCM BT UART devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) static DEFINE_MUTEX(bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) static LIST_HEAD(bcm_device_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) static int irq_polarity = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) module_param(irq_polarity, int, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) MODULE_PARM_DESC(irq_polarity, "IRQ polarity 0: active-high 1: active-low");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) static inline void host_set_baudrate(struct hci_uart *hu, unsigned int speed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) if (hu->serdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) serdev_device_set_baudrate(hu->serdev, speed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) hci_uart_set_baudrate(hu, speed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) struct hci_dev *hdev = hu->hdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) struct bcm_update_uart_baud_rate param;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (speed > 3000000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) struct bcm_write_uart_clock_setting clock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) clock.type = BCM_UART_CLOCK_48MHZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) bt_dev_dbg(hdev, "Set Controller clock (%d)", clock.type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) /* This Broadcom specific command changes the UART's controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * clock for baud rate > 3000000.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) skb = __hci_cmd_sync(hdev, 0xfc45, 1, &clock, HCI_INIT_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (IS_ERR(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) int err = PTR_ERR(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) bt_dev_err(hdev, "BCM: failed to write clock (%d)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) bt_dev_dbg(hdev, "Set Controller UART speed to %d bit/s", speed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) param.zero = cpu_to_le16(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) param.baud_rate = cpu_to_le32(speed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) /* This Broadcom specific command changes the UART's controller baud
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * rate.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) skb = __hci_cmd_sync(hdev, 0xfc18, sizeof(param), ¶m,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) HCI_INIT_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (IS_ERR(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) int err = PTR_ERR(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) bt_dev_err(hdev, "BCM: failed to write update baudrate (%d)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) /* bcm_device_exists should be protected by bcm_device_lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) static bool bcm_device_exists(struct bcm_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) struct list_head *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) /* Devices using serdev always exist */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (device && device->hu && device->hu->serdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) list_for_each(p, &bcm_device_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) struct bcm_device *dev = list_entry(p, struct bcm_device, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) if (device == dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) static int bcm_gpio_set_power(struct bcm_device *dev, bool powered)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) if (powered && !dev->res_enabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) /* Intel Macs use bcm_apple_get_resources() and don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * have regulator supplies configured.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) if (dev->supplies[0].supply) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) err = regulator_bulk_enable(BCM_NUM_SUPPLIES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) dev->supplies);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) /* LPO clock needs to be 32.768 kHz */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) err = clk_set_rate(dev->lpo_clk, 32768);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) dev_err(dev->dev, "Could not set LPO clock rate\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) goto err_regulator_disable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) err = clk_prepare_enable(dev->lpo_clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) goto err_regulator_disable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) err = clk_prepare_enable(dev->txco_clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) goto err_lpo_clk_disable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) err = dev->set_shutdown(dev, powered);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) goto err_txco_clk_disable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) err = dev->set_device_wakeup(dev, powered);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) goto err_revert_shutdown;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) if (!powered && dev->res_enabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) clk_disable_unprepare(dev->txco_clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) clk_disable_unprepare(dev->lpo_clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) /* Intel Macs use bcm_apple_get_resources() and don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) * have regulator supplies configured.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) if (dev->supplies[0].supply)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) regulator_bulk_disable(BCM_NUM_SUPPLIES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) dev->supplies);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) /* wait for device to power on and come out of reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) usleep_range(100000, 120000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) dev->res_enabled = powered;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) err_revert_shutdown:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) dev->set_shutdown(dev, !powered);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) err_txco_clk_disable:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) if (powered && !dev->res_enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) clk_disable_unprepare(dev->txco_clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) err_lpo_clk_disable:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) if (powered && !dev->res_enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) clk_disable_unprepare(dev->lpo_clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) err_regulator_disable:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) if (powered && !dev->res_enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) regulator_bulk_disable(BCM_NUM_SUPPLIES, dev->supplies);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) static irqreturn_t bcm_host_wake(int irq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) struct bcm_device *bdev = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) bt_dev_dbg(bdev, "Host wake IRQ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) pm_runtime_get(bdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) pm_runtime_mark_last_busy(bdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) pm_runtime_put_autosuspend(bdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) static int bcm_request_irq(struct bcm_data *bcm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) struct bcm_device *bdev = bcm->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) mutex_lock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if (!bcm_device_exists(bdev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) err = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) if (bdev->irq <= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) err = -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) err = devm_request_irq(bdev->dev, bdev->irq, bcm_host_wake,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) bdev->irq_active_low ? IRQF_TRIGGER_FALLING :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) IRQF_TRIGGER_RISING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) "host_wake", bdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) bdev->irq = err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) bdev->irq_acquired = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) device_init_wakeup(bdev->dev, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) pm_runtime_set_autosuspend_delay(bdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) BCM_AUTOSUSPEND_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) pm_runtime_use_autosuspend(bdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) pm_runtime_set_active(bdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) pm_runtime_enable(bdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) mutex_unlock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) static const struct bcm_set_sleep_mode default_sleep_params = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) .sleep_mode = 1, /* 0=Disabled, 1=UART, 2=Reserved, 3=USB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) .idle_host = 2, /* idle threshold HOST, in 300ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) .idle_dev = 2, /* idle threshold device, in 300ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) .bt_wake_active = 1, /* BT_WAKE active mode: 1 = high, 0 = low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) .host_wake_active = 0, /* HOST_WAKE active mode: 1 = high, 0 = low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) .allow_host_sleep = 1, /* Allow host sleep in SCO flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) .combine_modes = 1, /* Combine sleep and LPM flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) .tristate_control = 0, /* Allow tri-state control of UART tx flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) /* Irrelevant USB flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) .usb_auto_sleep = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) .usb_resume_timeout = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) .break_to_host = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) .pulsed_host_wake = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) static int bcm_setup_sleep(struct hci_uart *hu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) struct bcm_data *bcm = hu->priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) struct bcm_set_sleep_mode sleep_params = default_sleep_params;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) sleep_params.host_wake_active = !bcm->dev->irq_active_low;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) skb = __hci_cmd_sync(hu->hdev, 0xfc27, sizeof(sleep_params),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) &sleep_params, HCI_INIT_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) if (IS_ERR(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) int err = PTR_ERR(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) bt_dev_err(hu->hdev, "Sleep VSC failed (%d)", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) bt_dev_dbg(hu->hdev, "Set Sleep Parameters VSC succeeded");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) static inline int bcm_request_irq(struct bcm_data *bcm) { return 0; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) static inline int bcm_setup_sleep(struct hci_uart *hu) { return 0; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) static int bcm_set_diag(struct hci_dev *hdev, bool enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) struct hci_uart *hu = hci_get_drvdata(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) struct bcm_data *bcm = hu->priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if (!test_bit(HCI_RUNNING, &hdev->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) return -ENETDOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) skb = bt_skb_alloc(3, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) skb_put_u8(skb, BCM_LM_DIAG_PKT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) skb_put_u8(skb, 0xf0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) skb_put_u8(skb, enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) skb_queue_tail(&bcm->txq, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) hci_uart_tx_wakeup(hu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) static int bcm_open(struct hci_uart *hu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) struct bcm_data *bcm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) struct list_head *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) bt_dev_dbg(hu->hdev, "hu %p", hu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) if (!hci_uart_has_flow_control(hu))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) bcm = kzalloc(sizeof(*bcm), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) if (!bcm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) skb_queue_head_init(&bcm->txq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) hu->priv = bcm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) mutex_lock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) if (hu->serdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) bcm->dev = serdev_device_get_drvdata(hu->serdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) if (!hu->tty->dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) list_for_each(p, &bcm_device_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) struct bcm_device *dev = list_entry(p, struct bcm_device, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) /* Retrieve saved bcm_device based on parent of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) * platform device (saved during device probe) and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) * parent of tty device used by hci_uart
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) if (hu->tty->dev->parent == dev->dev->parent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) bcm->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) dev->hu = hu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) if (bcm->dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) if (bcm->dev->drive_rts_on_open)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) hci_uart_set_flow_control(hu, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) hu->init_speed = bcm->dev->init_speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) /* If oper_speed is set, ldisc/serdev will set the baudrate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) * before calling setup()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) if (!bcm->dev->no_early_set_baudrate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) hu->oper_speed = bcm->dev->oper_speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) err = bcm_gpio_set_power(bcm->dev, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) if (bcm->dev->drive_rts_on_open)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) hci_uart_set_flow_control(hu, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) goto err_unset_hu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) mutex_unlock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) err_unset_hu:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) if (!hu->serdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) bcm->dev->hu = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) mutex_unlock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) hu->priv = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) kfree(bcm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) static int bcm_close(struct hci_uart *hu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) struct bcm_data *bcm = hu->priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) struct bcm_device *bdev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) bt_dev_dbg(hu->hdev, "hu %p", hu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) /* Protect bcm->dev against removal of the device or driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) mutex_lock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) if (hu->serdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) bdev = serdev_device_get_drvdata(hu->serdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) } else if (bcm_device_exists(bcm->dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) bdev = bcm->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) bdev->hu = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) if (bdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) if (IS_ENABLED(CONFIG_PM) && bdev->irq_acquired) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) devm_free_irq(bdev->dev, bdev->irq, bdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) device_init_wakeup(bdev->dev, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) pm_runtime_disable(bdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) err = bcm_gpio_set_power(bdev, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) bt_dev_err(hu->hdev, "Failed to power down");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) pm_runtime_set_suspended(bdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) mutex_unlock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) skb_queue_purge(&bcm->txq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) kfree_skb(bcm->rx_skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) kfree(bcm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) hu->priv = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) static int bcm_flush(struct hci_uart *hu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) struct bcm_data *bcm = hu->priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) bt_dev_dbg(hu->hdev, "hu %p", hu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) skb_queue_purge(&bcm->txq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) static int bcm_setup(struct hci_uart *hu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) struct bcm_data *bcm = hu->priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) bool fw_load_done = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) unsigned int speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) bt_dev_dbg(hu->hdev, "hu %p", hu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) hu->hdev->set_diag = bcm_set_diag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) hu->hdev->set_bdaddr = btbcm_set_bdaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) err = btbcm_initialize(hu->hdev, &fw_load_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) if (!fw_load_done)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) /* Init speed if any */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) if (hu->init_speed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) speed = hu->init_speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) else if (hu->proto->init_speed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) speed = hu->proto->init_speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) speed = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) if (speed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) host_set_baudrate(hu, speed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) /* Operational speed if any */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) if (hu->oper_speed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) speed = hu->oper_speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) else if (bcm->dev && bcm->dev->oper_speed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) speed = bcm->dev->oper_speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) else if (hu->proto->oper_speed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) speed = hu->proto->oper_speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) speed = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) if (speed) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) err = bcm_set_baudrate(hu, speed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) host_set_baudrate(hu, speed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) /* PCM parameters if provided */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) if (bcm->dev && bcm->dev->pcm_int_params[0] != 0xff) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) struct bcm_set_pcm_int_params params;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) btbcm_read_pcm_int_params(hu->hdev, ¶ms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) memcpy(¶ms, bcm->dev->pcm_int_params, 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) btbcm_write_pcm_int_params(hu->hdev, ¶ms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) err = btbcm_finalize(hu->hdev, &fw_load_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) /* Some devices ship with the controller default address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) * Allow the bootloader to set a valid address through the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) * device tree.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) set_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hu->hdev->quirks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) if (!bcm_request_irq(bcm))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) err = bcm_setup_sleep(hu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) #define BCM_RECV_LM_DIAG \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) .type = BCM_LM_DIAG_PKT, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) .hlen = BCM_LM_DIAG_SIZE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) .loff = 0, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) .lsize = 0, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) .maxlen = BCM_LM_DIAG_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) #define BCM_RECV_NULL \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) .type = BCM_NULL_PKT, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) .hlen = BCM_NULL_SIZE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) .loff = 0, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) .lsize = 0, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) .maxlen = BCM_NULL_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) #define BCM_RECV_TYPE49 \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) .type = BCM_TYPE49_PKT, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) .hlen = BCM_TYPE49_SIZE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) .loff = 0, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) .lsize = 0, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) .maxlen = BCM_TYPE49_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) #define BCM_RECV_TYPE52 \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) .type = BCM_TYPE52_PKT, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) .hlen = BCM_TYPE52_SIZE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) .loff = 0, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) .lsize = 0, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) .maxlen = BCM_TYPE52_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) static const struct h4_recv_pkt bcm_recv_pkts[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) { H4_RECV_ACL, .recv = hci_recv_frame },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) { H4_RECV_SCO, .recv = hci_recv_frame },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) { H4_RECV_EVENT, .recv = hci_recv_frame },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) { H4_RECV_ISO, .recv = hci_recv_frame },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) { BCM_RECV_LM_DIAG, .recv = hci_recv_diag },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) { BCM_RECV_NULL, .recv = hci_recv_diag },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) { BCM_RECV_TYPE49, .recv = hci_recv_diag },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) { BCM_RECV_TYPE52, .recv = hci_recv_diag },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) static int bcm_recv(struct hci_uart *hu, const void *data, int count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) struct bcm_data *bcm = hu->priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) if (!test_bit(HCI_UART_REGISTERED, &hu->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) return -EUNATCH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) bcm->rx_skb = h4_recv_buf(hu->hdev, bcm->rx_skb, data, count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) bcm_recv_pkts, ARRAY_SIZE(bcm_recv_pkts));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) if (IS_ERR(bcm->rx_skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) int err = PTR_ERR(bcm->rx_skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) bt_dev_err(hu->hdev, "Frame reassembly failed (%d)", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) bcm->rx_skb = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) } else if (!bcm->rx_skb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) /* Delay auto-suspend when receiving completed packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) mutex_lock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) if (bcm->dev && bcm_device_exists(bcm->dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) pm_runtime_get(bcm->dev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) pm_runtime_mark_last_busy(bcm->dev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) pm_runtime_put_autosuspend(bcm->dev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) mutex_unlock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) static int bcm_enqueue(struct hci_uart *hu, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) struct bcm_data *bcm = hu->priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) bt_dev_dbg(hu->hdev, "hu %p skb %p", hu, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) /* Prepend skb with frame type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) skb_queue_tail(&bcm->txq, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) static struct sk_buff *bcm_dequeue(struct hci_uart *hu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) struct bcm_data *bcm = hu->priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) struct sk_buff *skb = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) struct bcm_device *bdev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) mutex_lock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) if (bcm_device_exists(bcm->dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) bdev = bcm->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) pm_runtime_get_sync(bdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) /* Shall be resumed here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) skb = skb_dequeue(&bcm->txq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) if (bdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) pm_runtime_mark_last_busy(bdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) pm_runtime_put_autosuspend(bdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) mutex_unlock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) return skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) static int bcm_suspend_device(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) struct bcm_device *bdev = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) bt_dev_dbg(bdev, "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) if (!bdev->is_suspended && bdev->hu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) hci_uart_set_flow_control(bdev->hu, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) /* Once this returns, driver suspends BT via GPIO */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) bdev->is_suspended = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) /* Suspend the device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) err = bdev->set_device_wakeup(bdev, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) if (bdev->is_suspended && bdev->hu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) bdev->is_suspended = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) hci_uart_set_flow_control(bdev->hu, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) bt_dev_dbg(bdev, "suspend, delaying 15 ms");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) msleep(15);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) static int bcm_resume_device(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) struct bcm_device *bdev = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) bt_dev_dbg(bdev, "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) err = bdev->set_device_wakeup(bdev, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) dev_err(dev, "Failed to power up\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) bt_dev_dbg(bdev, "resume, delaying 15 ms");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) msleep(15);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) /* When this executes, the device has woken up already */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) if (bdev->is_suspended && bdev->hu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) bdev->is_suspended = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) hci_uart_set_flow_control(bdev->hu, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) #ifdef CONFIG_PM_SLEEP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) /* suspend callback */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) static int bcm_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) struct bcm_device *bdev = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) bt_dev_dbg(bdev, "suspend: is_suspended %d", bdev->is_suspended);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) * When used with a device instantiated as platform_device, bcm_suspend
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) * can be called at any time as long as the platform device is bound,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) * so it should use bcm_device_lock to protect access to hci_uart
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) * and device_wake-up GPIO.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) mutex_lock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) if (!bdev->hu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) if (pm_runtime_active(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) bcm_suspend_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) if (device_may_wakeup(dev) && bdev->irq > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) error = enable_irq_wake(bdev->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) bt_dev_dbg(bdev, "BCM irq: enabled");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) mutex_unlock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) /* resume callback */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) static int bcm_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) struct bcm_device *bdev = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) bt_dev_dbg(bdev, "resume: is_suspended %d", bdev->is_suspended);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) * When used with a device instantiated as platform_device, bcm_resume
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) * can be called at any time as long as platform device is bound,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) * so it should use bcm_device_lock to protect access to hci_uart
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) * and device_wake-up GPIO.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) mutex_lock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) if (!bdev->hu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) if (device_may_wakeup(dev) && bdev->irq > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) disable_irq_wake(bdev->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) bt_dev_dbg(bdev, "BCM irq: disabled");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) err = bcm_resume_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) mutex_unlock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) if (!err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) pm_runtime_disable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) pm_runtime_set_active(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) pm_runtime_enable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) /* Some firmware reports an IRQ which does not work (wrong pin in fw table?) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) static const struct dmi_system_id bcm_broken_irq_dmi_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) .ident = "Meegopad T08",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) .matches = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) DMI_EXACT_MATCH(DMI_BOARD_VENDOR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) "To be filled by OEM."),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) DMI_EXACT_MATCH(DMI_BOARD_NAME, "T3 MRD"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) DMI_EXACT_MATCH(DMI_BOARD_VERSION, "V1.1"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) #ifdef CONFIG_ACPI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) static const struct acpi_gpio_params first_gpio = { 0, 0, false };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) static const struct acpi_gpio_params second_gpio = { 1, 0, false };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) static const struct acpi_gpio_params third_gpio = { 2, 0, false };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) static const struct acpi_gpio_mapping acpi_bcm_int_last_gpios[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) { "device-wakeup-gpios", &first_gpio, 1 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) { "shutdown-gpios", &second_gpio, 1 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) { "host-wakeup-gpios", &third_gpio, 1 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) static const struct acpi_gpio_mapping acpi_bcm_int_first_gpios[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) { "host-wakeup-gpios", &first_gpio, 1 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) { "device-wakeup-gpios", &second_gpio, 1 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) { "shutdown-gpios", &third_gpio, 1 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) static int bcm_resource(struct acpi_resource *ares, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) struct bcm_device *dev = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) struct acpi_resource_extended_irq *irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) struct acpi_resource_gpio *gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) struct acpi_resource_uart_serialbus *sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) switch (ares->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) irq = &ares->data.extended_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) if (irq->polarity != ACPI_ACTIVE_LOW)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) dev_info(dev->dev, "ACPI Interrupt resource is active-high, this is usually wrong, treating the IRQ as active-low\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) dev->irq_active_low = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) case ACPI_RESOURCE_TYPE_GPIO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) gpio = &ares->data.gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) dev->gpio_int_idx = dev->gpio_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) dev->irq_active_low = gpio->polarity == ACPI_ACTIVE_LOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) dev->gpio_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) case ACPI_RESOURCE_TYPE_SERIAL_BUS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) sb = &ares->data.uart_serial_bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) if (sb->type == ACPI_RESOURCE_SERIAL_TYPE_UART) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) dev->init_speed = sb->default_baud_rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) dev->oper_speed = 4000000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) static int bcm_apple_set_device_wakeup(struct bcm_device *dev, bool awake)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) if (ACPI_FAILURE(acpi_execute_simple_method(dev->btlp, NULL, !awake)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) static int bcm_apple_set_shutdown(struct bcm_device *dev, bool powered)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) if (ACPI_FAILURE(acpi_evaluate_object(powered ? dev->btpu : dev->btpd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) NULL, NULL, NULL)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) static int bcm_apple_get_resources(struct bcm_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) struct acpi_device *adev = ACPI_COMPANION(dev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) const union acpi_object *obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) if (!adev ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) ACPI_FAILURE(acpi_get_handle(adev->handle, "BTLP", &dev->btlp)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) ACPI_FAILURE(acpi_get_handle(adev->handle, "BTPU", &dev->btpu)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) ACPI_FAILURE(acpi_get_handle(adev->handle, "BTPD", &dev->btpd)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) if (!acpi_dev_get_property(adev, "baud", ACPI_TYPE_BUFFER, &obj) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) obj->buffer.length == 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) dev->init_speed = *(u64 *)obj->buffer.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) dev->set_device_wakeup = bcm_apple_set_device_wakeup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) dev->set_shutdown = bcm_apple_set_shutdown;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) static inline int bcm_apple_get_resources(struct bcm_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) #endif /* CONFIG_ACPI */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) static int bcm_gpio_set_device_wakeup(struct bcm_device *dev, bool awake)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) gpiod_set_value_cansleep(dev->device_wakeup, awake);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) static int bcm_gpio_set_shutdown(struct bcm_device *dev, bool powered)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) gpiod_set_value_cansleep(dev->shutdown, powered);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) /* Try a bunch of names for TXCO */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) static struct clk *bcm_get_txco(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) struct clk *clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) /* New explicit name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) clk = devm_clk_get(dev, "txco");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) if (!IS_ERR(clk) || PTR_ERR(clk) == -EPROBE_DEFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) return clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) /* Deprecated name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) clk = devm_clk_get(dev, "extclk");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) if (!IS_ERR(clk) || PTR_ERR(clk) == -EPROBE_DEFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) return clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) /* Original code used no name at all */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) return devm_clk_get(dev, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) static int bcm_get_resources(struct bcm_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) const struct dmi_system_id *dmi_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) dev->name = dev_name(dev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) if (x86_apple_machine && !bcm_apple_get_resources(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) dev->txco_clk = bcm_get_txco(dev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) /* Handle deferred probing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) if (dev->txco_clk == ERR_PTR(-EPROBE_DEFER))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) return PTR_ERR(dev->txco_clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) /* Ignore all other errors as before */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) if (IS_ERR(dev->txco_clk))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) dev->txco_clk = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) dev->lpo_clk = devm_clk_get(dev->dev, "lpo");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) if (dev->lpo_clk == ERR_PTR(-EPROBE_DEFER))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) return PTR_ERR(dev->lpo_clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) if (IS_ERR(dev->lpo_clk))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) dev->lpo_clk = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) /* Check if we accidentally fetched the lpo clock twice */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) if (dev->lpo_clk && clk_is_match(dev->lpo_clk, dev->txco_clk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) devm_clk_put(dev->dev, dev->txco_clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) dev->txco_clk = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) dev->device_wakeup = devm_gpiod_get_optional(dev->dev, "device-wakeup",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) GPIOD_OUT_LOW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) if (IS_ERR(dev->device_wakeup))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) return PTR_ERR(dev->device_wakeup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) dev->shutdown = devm_gpiod_get_optional(dev->dev, "shutdown",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) GPIOD_OUT_LOW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) if (IS_ERR(dev->shutdown))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) return PTR_ERR(dev->shutdown);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) dev->set_device_wakeup = bcm_gpio_set_device_wakeup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) dev->set_shutdown = bcm_gpio_set_shutdown;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) dev->supplies[0].supply = "vbat";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) dev->supplies[1].supply = "vddio";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) err = devm_regulator_bulk_get(dev->dev, BCM_NUM_SUPPLIES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) dev->supplies);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) /* IRQ can be declared in ACPI table as Interrupt or GpioInt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) if (dev->irq <= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) struct gpio_desc *gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) gpio = devm_gpiod_get_optional(dev->dev, "host-wakeup",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) GPIOD_IN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) if (IS_ERR(gpio))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) return PTR_ERR(gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) dev->irq = gpiod_to_irq(gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) dmi_id = dmi_first_match(bcm_broken_irq_dmi_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) if (dmi_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) dev_info(dev->dev, "%s: Has a broken IRQ config, disabling IRQ support / runtime-pm\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) dmi_id->ident);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) dev->irq = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) dev_dbg(dev->dev, "BCM irq: %d\n", dev->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) #ifdef CONFIG_ACPI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) static int bcm_acpi_probe(struct bcm_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) LIST_HEAD(resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) const struct acpi_gpio_mapping *gpio_mapping = acpi_bcm_int_last_gpios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) struct resource_entry *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) /* Retrieve UART ACPI info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) dev->gpio_int_idx = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) ret = acpi_dev_get_resources(ACPI_COMPANION(dev->dev),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) &resources, bcm_resource, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) resource_list_for_each_entry(entry, &resources) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) if (resource_type(entry->res) == IORESOURCE_IRQ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) dev->irq = entry->res->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) acpi_dev_free_resource_list(&resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) /* If the DSDT uses an Interrupt resource for the IRQ, then there are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) * only 2 GPIO resources, we use the irq-last mapping for this, since
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) * we already have an irq the 3th / last mapping will not be used.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) if (dev->irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) gpio_mapping = acpi_bcm_int_last_gpios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) else if (dev->gpio_int_idx == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) gpio_mapping = acpi_bcm_int_first_gpios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) else if (dev->gpio_int_idx == 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) gpio_mapping = acpi_bcm_int_last_gpios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) dev_warn(dev->dev, "Unexpected ACPI gpio_int_idx: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) dev->gpio_int_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) /* Warn if our expectations are not met. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) if (dev->gpio_count != (dev->irq ? 2 : 3))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) dev_warn(dev->dev, "Unexpected number of ACPI GPIOs: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) dev->gpio_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) ret = devm_acpi_dev_add_driver_gpios(dev->dev, gpio_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) if (irq_polarity != -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) dev->irq_active_low = irq_polarity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) dev_warn(dev->dev, "Overwriting IRQ polarity to active %s by module-param\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) dev->irq_active_low ? "low" : "high");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) static int bcm_acpi_probe(struct bcm_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) #endif /* CONFIG_ACPI */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) static int bcm_of_probe(struct bcm_device *bdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) device_property_read_u32(bdev->dev, "max-speed", &bdev->oper_speed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) device_property_read_u8_array(bdev->dev, "brcm,bt-pcm-int-params",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) bdev->pcm_int_params, 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) bdev->irq = of_irq_get_byname(bdev->dev->of_node, "host-wakeup");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) bdev->irq_active_low = irq_get_trigger_type(bdev->irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) & (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_LEVEL_LOW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) static int bcm_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) struct bcm_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) if (!dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) dev->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) ret = platform_get_irq(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) dev->irq = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) /* Initialize routing field to an unused value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) dev->pcm_int_params[0] = 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) if (has_acpi_companion(&pdev->dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) ret = bcm_acpi_probe(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) ret = bcm_get_resources(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) platform_set_drvdata(pdev, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) dev_info(&pdev->dev, "%s device registered.\n", dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) /* Place this instance on the device list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) mutex_lock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) list_add_tail(&dev->list, &bcm_device_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) mutex_unlock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) ret = bcm_gpio_set_power(dev, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) dev_err(&pdev->dev, "Failed to power down\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) static int bcm_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) struct bcm_device *dev = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) mutex_lock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) list_del(&dev->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) mutex_unlock(&bcm_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) dev_info(&pdev->dev, "%s device unregistered.\n", dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) static const struct hci_uart_proto bcm_proto = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) .id = HCI_UART_BCM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) .name = "Broadcom",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) .manufacturer = 15,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) .init_speed = 115200,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) .open = bcm_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) .close = bcm_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) .flush = bcm_flush,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) .setup = bcm_setup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) .set_baudrate = bcm_set_baudrate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) .recv = bcm_recv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) .enqueue = bcm_enqueue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) .dequeue = bcm_dequeue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) #ifdef CONFIG_ACPI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) static const struct acpi_device_id bcm_acpi_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) { "BCM2E00" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) { "BCM2E01" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) { "BCM2E02" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) { "BCM2E03" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) { "BCM2E04" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) { "BCM2E05" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) { "BCM2E06" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) { "BCM2E07" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) { "BCM2E08" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) { "BCM2E09" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) { "BCM2E0A" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) { "BCM2E0B" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) { "BCM2E0C" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) { "BCM2E0D" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) { "BCM2E0E" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) { "BCM2E0F" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) { "BCM2E10" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) { "BCM2E11" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) { "BCM2E12" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) { "BCM2E13" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) { "BCM2E14" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) { "BCM2E15" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) { "BCM2E16" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) { "BCM2E17" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) { "BCM2E18" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) { "BCM2E19" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) { "BCM2E1A" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) { "BCM2E1B" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) { "BCM2E1C" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) { "BCM2E1D" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) { "BCM2E1F" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) { "BCM2E20" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) { "BCM2E21" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) { "BCM2E22" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) { "BCM2E23" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) { "BCM2E24" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) { "BCM2E25" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) { "BCM2E26" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) { "BCM2E27" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) { "BCM2E28" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) { "BCM2E29" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) { "BCM2E2A" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) { "BCM2E2B" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) { "BCM2E2C" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) { "BCM2E2D" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) { "BCM2E2E" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) { "BCM2E2F" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) { "BCM2E30" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) { "BCM2E31" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) { "BCM2E32" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) { "BCM2E33" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) { "BCM2E34" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) { "BCM2E35" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) { "BCM2E36" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) { "BCM2E37" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) { "BCM2E38" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) { "BCM2E39" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) { "BCM2E3A" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) { "BCM2E3B" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) { "BCM2E3C" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) { "BCM2E3D" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) { "BCM2E3E" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) { "BCM2E3F" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) { "BCM2E40" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) { "BCM2E41" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) { "BCM2E42" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) { "BCM2E43" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) { "BCM2E44" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) { "BCM2E45" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) { "BCM2E46" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) { "BCM2E47" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) { "BCM2E48" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) { "BCM2E49" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) { "BCM2E4A" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) { "BCM2E4B" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) { "BCM2E4C" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) { "BCM2E4D" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) { "BCM2E4E" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) { "BCM2E4F" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) { "BCM2E50" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) { "BCM2E51" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) { "BCM2E52" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) { "BCM2E53" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) { "BCM2E54" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) { "BCM2E55" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) { "BCM2E56" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) { "BCM2E57" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) { "BCM2E58" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) { "BCM2E59" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) { "BCM2E5A" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) { "BCM2E5B" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) { "BCM2E5C" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) { "BCM2E5D" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) { "BCM2E5E" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) { "BCM2E5F" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) { "BCM2E60" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) { "BCM2E61" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) { "BCM2E62" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) { "BCM2E63" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) { "BCM2E64" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) { "BCM2E65" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) { "BCM2E66" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) { "BCM2E67" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) { "BCM2E68" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) { "BCM2E69" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) { "BCM2E6B" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) { "BCM2E6D" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) { "BCM2E6E" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) { "BCM2E6F" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) { "BCM2E70" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) { "BCM2E71" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) { "BCM2E72" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) { "BCM2E73" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) { "BCM2E74" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) { "BCM2E75" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) { "BCM2E76" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) { "BCM2E77" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) { "BCM2E78" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) { "BCM2E79" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) { "BCM2E7A" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) { "BCM2E7B" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) { "BCM2E7C" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) { "BCM2E7D" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) { "BCM2E7E" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) { "BCM2E7F" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) { "BCM2E80" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) { "BCM2E81" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) { "BCM2E82" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) { "BCM2E83" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) { "BCM2E84" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) { "BCM2E85" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) { "BCM2E86" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) { "BCM2E87" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) { "BCM2E88" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) { "BCM2E89" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) { "BCM2E8A" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) { "BCM2E8B" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) { "BCM2E8C" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) { "BCM2E8D" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) { "BCM2E8E" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) { "BCM2E90" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) { "BCM2E92" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) { "BCM2E93" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) { "BCM2E94" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) { "BCM2E95" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) { "BCM2E96" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) { "BCM2E97" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) { "BCM2E98" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) { "BCM2E99" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) { "BCM2E9A" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) { "BCM2E9B" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) { "BCM2E9C" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) { "BCM2E9D" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) { "BCM2EA0" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) { "BCM2EA1" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) { "BCM2EA2" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) { "BCM2EA3" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) { "BCM2EA4" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) { "BCM2EA5" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) { "BCM2EA6" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) { "BCM2EA7" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) { "BCM2EA8" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) { "BCM2EA9" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) { "BCM2EAA" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) { "BCM2EAB" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) { "BCM2EAC" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) MODULE_DEVICE_TABLE(acpi, bcm_acpi_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) /* suspend and resume callbacks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) static const struct dev_pm_ops bcm_pm_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) SET_SYSTEM_SLEEP_PM_OPS(bcm_suspend, bcm_resume)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) SET_RUNTIME_PM_OPS(bcm_suspend_device, bcm_resume_device, NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) static struct platform_driver bcm_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) .probe = bcm_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) .remove = bcm_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) .name = "hci_bcm",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) .acpi_match_table = ACPI_PTR(bcm_acpi_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) .pm = &bcm_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) static int bcm_serdev_probe(struct serdev_device *serdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) struct bcm_device *bcmdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) const struct bcm_device_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) bcmdev = devm_kzalloc(&serdev->dev, sizeof(*bcmdev), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) if (!bcmdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) bcmdev->dev = &serdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) bcmdev->hu = &bcmdev->serdev_hu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) bcmdev->serdev_hu.serdev = serdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) serdev_device_set_drvdata(serdev, bcmdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) /* Initialize routing field to an unused value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) bcmdev->pcm_int_params[0] = 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) if (has_acpi_companion(&serdev->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) err = bcm_acpi_probe(bcmdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) err = bcm_of_probe(bcmdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) err = bcm_get_resources(bcmdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) if (!bcmdev->shutdown) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) dev_warn(&serdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) "No reset resource, using default baud rate\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) bcmdev->oper_speed = bcmdev->init_speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) err = bcm_gpio_set_power(bcmdev, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) dev_err(&serdev->dev, "Failed to power down\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) data = device_get_match_data(bcmdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) if (data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) bcmdev->no_early_set_baudrate = data->no_early_set_baudrate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) bcmdev->drive_rts_on_open = data->drive_rts_on_open;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) return hci_uart_register_device(&bcmdev->serdev_hu, &bcm_proto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) static void bcm_serdev_remove(struct serdev_device *serdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) struct bcm_device *bcmdev = serdev_device_get_drvdata(serdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) hci_uart_unregister_device(&bcmdev->serdev_hu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) #ifdef CONFIG_OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) static struct bcm_device_data bcm4354_device_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) .no_early_set_baudrate = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) static struct bcm_device_data bcm43438_device_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) .drive_rts_on_open = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) static const struct of_device_id bcm_bluetooth_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) { .compatible = "brcm,bcm20702a1" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) { .compatible = "brcm,bcm4329-bt" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) { .compatible = "brcm,bcm4345c5" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) { .compatible = "brcm,bcm4330-bt" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) { .compatible = "brcm,bcm43438-bt", .data = &bcm43438_device_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) { .compatible = "brcm,bcm43540-bt", .data = &bcm4354_device_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) { .compatible = "brcm,bcm4335a0" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) MODULE_DEVICE_TABLE(of, bcm_bluetooth_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) static struct serdev_device_driver bcm_serdev_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) .probe = bcm_serdev_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) .remove = bcm_serdev_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) .name = "hci_uart_bcm",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) .of_match_table = of_match_ptr(bcm_bluetooth_of_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) .acpi_match_table = ACPI_PTR(bcm_acpi_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) .pm = &bcm_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) int __init bcm_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) /* For now, we need to keep both platform device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) * driver (ACPI generated) and serdev driver (DT).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) platform_driver_register(&bcm_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) serdev_device_driver_register(&bcm_serdev_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) return hci_uart_register_proto(&bcm_proto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) int __exit bcm_deinit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) platform_driver_unregister(&bcm_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) serdev_device_driver_unregister(&bcm_serdev_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) return hci_uart_unregister_proto(&bcm_proto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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