// SPDX-License-Identifier: GPL-2.0-only /* * Bluetooth Software UART Qualcomm protocol * * HCI_IBS (HCI In-Band Sleep) is Qualcomm's power management * protocol extension to H4. * * Copyright (C) 2007 Texas Instruments, Inc. * Copyright (c) 2010, 2012, 2018 The Linux Foundation. All rights reserved. * * Acknowledgements: * This file is based on hci_ll.c, which was... * Written by Ohad Ben-Cohen <[email protected]> * which was in turn based on hci_h4.c, which was written * by Maxim Krasnyansky and Marcel Holtmann. */ #include <linux/kernel.h> #include <linux/clk.h> #include <linux/completion.h> #include <linux/debugfs.h> #include <linux/delay.h> #include <linux/devcoredump.h> #include <linux/device.h> #include <linux/gpio/consumer.h> #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/of.h> #include <linux/acpi.h> #include <linux/platform_device.h> #include <linux/pwrseq/consumer.h> #include <linux/regulator/consumer.h> #include <linux/serdev.h> #include <linux/mutex.h> #include <linux/unaligned.h> #include <net/bluetooth/bluetooth.h> #include <net/bluetooth/hci_core.h> #include "hci_uart.h" #include "btqca.h" /* HCI_IBS protocol messages */ #define HCI_IBS_SLEEP_IND … #define HCI_IBS_WAKE_IND … #define HCI_IBS_WAKE_ACK … #define HCI_MAX_IBS_SIZE … #define IBS_WAKE_RETRANS_TIMEOUT_MS … #define IBS_BTSOC_TX_IDLE_TIMEOUT_MS … #define IBS_HOST_TX_IDLE_TIMEOUT_MS … #define CMD_TRANS_TIMEOUT_MS … #define MEMDUMP_TIMEOUT_MS … #define IBS_DISABLE_SSR_TIMEOUT_MS … #define FW_DOWNLOAD_TIMEOUT_MS … /* susclk rate */ #define SUSCLK_RATE_32KHZ … /* Controller debug log header */ #define QCA_DEBUG_HANDLE … /* max retry count when init fails */ #define MAX_INIT_RETRIES … /* Controller dump header */ #define QCA_SSR_DUMP_HANDLE … #define QCA_DUMP_PACKET_SIZE … #define QCA_LAST_SEQUENCE_NUM … #define QCA_CRASHBYTE_PACKET_LEN … #define QCA_MEMDUMP_BYTE … enum qca_flags { … }; enum qca_capabilities { … }; /* HCI_IBS transmit side sleep protocol states */ enum tx_ibs_states { … }; /* HCI_IBS receive side sleep protocol states */ enum rx_states { … }; /* HCI_IBS transmit and receive side clock state vote */ enum hci_ibs_clock_state_vote { … }; /* Controller memory dump states */ enum qca_memdump_states { … }; struct qca_memdump_info { … }; struct qca_memdump_event_hdr { … } __packed; struct qca_dump_size { … } __packed; struct qca_data { … }; enum qca_speed_type { … }; /* * Voltage regulator information required for configuring the * QCA Bluetooth chipset */ struct qca_vreg { … }; struct qca_device_data { … }; /* * Platform data for the QCA Bluetooth power driver. */ struct qca_power { … }; struct qca_serdev { … }; static int qca_regulator_enable(struct qca_serdev *qcadev); static void qca_regulator_disable(struct qca_serdev *qcadev); static void qca_power_shutdown(struct hci_uart *hu); static int qca_power_off(struct hci_dev *hdev); static void qca_controller_memdump(struct work_struct *work); static void qca_dmp_hdr(struct hci_dev *hdev, struct sk_buff *skb); static enum qca_btsoc_type qca_soc_type(struct hci_uart *hu) { … } static const char *qca_get_firmware_name(struct hci_uart *hu) { … } static void __serial_clock_on(struct tty_struct *tty) { … } static void __serial_clock_off(struct tty_struct *tty) { … } /* serial_clock_vote needs to be called with the ibs lock held */ static void serial_clock_vote(unsigned long vote, struct hci_uart *hu) { … } /* Builds and sends an HCI_IBS command packet. * These are very simple packets with only 1 cmd byte. */ static int send_hci_ibs_cmd(u8 cmd, struct hci_uart *hu) { … } static void qca_wq_awake_device(struct work_struct *work) { … } static void qca_wq_awake_rx(struct work_struct *work) { … } static void qca_wq_serial_rx_clock_vote_off(struct work_struct *work) { … } static void qca_wq_serial_tx_clock_vote_off(struct work_struct *work) { … } static void hci_ibs_tx_idle_timeout(struct timer_list *t) { … } static void hci_ibs_wake_retrans_timeout(struct timer_list *t) { … } static void qca_controller_memdump_timeout(struct work_struct *work) { … } /* Initialize protocol */ static int qca_open(struct hci_uart *hu) { … } static void qca_debugfs_init(struct hci_dev *hdev) { … } /* Flush protocol data */ static int qca_flush(struct hci_uart *hu) { … } /* Close protocol */ static int qca_close(struct hci_uart *hu) { … } /* Called upon a wake-up-indication from the device. */ static void device_want_to_wakeup(struct hci_uart *hu) { … } /* Called upon a sleep-indication from the device. */ static void device_want_to_sleep(struct hci_uart *hu) { … } /* Called upon wake-up-acknowledgement from the device */ static void device_woke_up(struct hci_uart *hu) { … } /* Enqueue frame for transmittion (padding, crc, etc) may be called from * two simultaneous tasklets. */ static int qca_enqueue(struct hci_uart *hu, struct sk_buff *skb) { … } static int qca_ibs_sleep_ind(struct hci_dev *hdev, struct sk_buff *skb) { … } static int qca_ibs_wake_ind(struct hci_dev *hdev, struct sk_buff *skb) { … } static int qca_ibs_wake_ack(struct hci_dev *hdev, struct sk_buff *skb) { … } static int qca_recv_acl_data(struct hci_dev *hdev, struct sk_buff *skb) { … } static void qca_dmp_hdr(struct hci_dev *hdev, struct sk_buff *skb) { … } static void qca_controller_memdump(struct work_struct *work) { … } static int qca_controller_memdump_event(struct hci_dev *hdev, struct sk_buff *skb) { … } static int qca_recv_event(struct hci_dev *hdev, struct sk_buff *skb) { … } #define QCA_IBS_SLEEP_IND_EVENT … #define QCA_IBS_WAKE_IND_EVENT … #define QCA_IBS_WAKE_ACK_EVENT … static const struct h4_recv_pkt qca_recv_pkts[] = …; static int qca_recv(struct hci_uart *hu, const void *data, int count) { … } static struct sk_buff *qca_dequeue(struct hci_uart *hu) { … } static uint8_t qca_get_baudrate_value(int speed) { … } static int qca_set_baudrate(struct hci_dev *hdev, uint8_t baudrate) { … } static inline void host_set_baudrate(struct hci_uart *hu, unsigned int speed) { … } static int qca_send_power_pulse(struct hci_uart *hu, bool on) { … } static unsigned int qca_get_speed(struct hci_uart *hu, enum qca_speed_type speed_type) { … } static int qca_check_speeds(struct hci_uart *hu) { … } static int qca_set_speed(struct hci_uart *hu, enum qca_speed_type speed_type) { … } static int qca_send_crashbuffer(struct hci_uart *hu) { … } static void qca_wait_for_dump_collection(struct hci_dev *hdev) { … } static void qca_hw_error(struct hci_dev *hdev, u8 code) { … } static void qca_cmd_timeout(struct hci_dev *hdev) { … } static bool qca_wakeup(struct hci_dev *hdev) { … } static int qca_port_reopen(struct hci_uart *hu) { … } static int qca_regulator_init(struct hci_uart *hu) { … } static int qca_power_on(struct hci_dev *hdev) { … } static void hci_coredump_qca(struct hci_dev *hdev) { … } static int qca_get_data_path_id(struct hci_dev *hdev, __u8 *data_path_id) { … } static int qca_configure_hfp_offload(struct hci_dev *hdev) { … } static int qca_setup(struct hci_uart *hu) { … } static const struct hci_uart_proto qca_proto = …; static const struct qca_device_data qca_soc_data_wcn3988 __maybe_unused = …; static const struct qca_device_data qca_soc_data_wcn3990 __maybe_unused = …; static const struct qca_device_data qca_soc_data_wcn3991 __maybe_unused = …; static const struct qca_device_data qca_soc_data_wcn3998 __maybe_unused = …; static const struct qca_device_data qca_soc_data_qca2066 __maybe_unused = …; static const struct qca_device_data qca_soc_data_qca6390 __maybe_unused = …; static const struct qca_device_data qca_soc_data_wcn6750 __maybe_unused = …; static const struct qca_device_data qca_soc_data_wcn6855 __maybe_unused = …; static const struct qca_device_data qca_soc_data_wcn7850 __maybe_unused = …; static void qca_power_shutdown(struct hci_uart *hu) { … } static int qca_power_off(struct hci_dev *hdev) { … } static int qca_regulator_enable(struct qca_serdev *qcadev) { … } static void qca_regulator_disable(struct qca_serdev *qcadev) { … } static int qca_init_regulators(struct qca_power *qca, const struct qca_vreg *vregs, size_t num_vregs) { … } static void qca_clk_disable_unprepare(void *data) { … } static int qca_serdev_probe(struct serdev_device *serdev) { … } static void qca_serdev_remove(struct serdev_device *serdev) { … } static void qca_serdev_shutdown(struct device *dev) { … } static int __maybe_unused qca_suspend(struct device *dev) { … } static int __maybe_unused qca_resume(struct device *dev) { … } static SIMPLE_DEV_PM_OPS(qca_pm_ops, qca_suspend, qca_resume); #ifdef CONFIG_OF static const struct of_device_id qca_bluetooth_of_match[] = …; MODULE_DEVICE_TABLE(of, qca_bluetooth_of_match); #endif #ifdef CONFIG_ACPI static const struct acpi_device_id qca_bluetooth_acpi_match[] = …; MODULE_DEVICE_TABLE(acpi, qca_bluetooth_acpi_match); #endif #ifdef CONFIG_DEV_COREDUMP static void hciqca_coredump(struct device *dev) { … } #endif static struct serdev_device_driver qca_serdev_driver = …; int __init qca_init(void) { … } int __exit qca_deinit(void) { … }
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