// SPDX-License-Identifier: GPL-2.0-only /* * Driver for IMS Passenger Control Unit Devices * * Copyright (C) 2013 The IMS Company */ #include <linux/completion.h> #include <linux/device.h> #include <linux/firmware.h> #include <linux/ihex.h> #include <linux/input.h> #include <linux/kernel.h> #include <linux/leds.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/types.h> #include <linux/usb/input.h> #include <linux/usb/cdc.h> #include <linux/unaligned.h> #define IMS_PCU_KEYMAP_LEN … struct ims_pcu_buttons { … }; struct ims_pcu_gamepad { … }; struct ims_pcu_backlight { … }; #define IMS_PCU_PART_NUMBER_LEN … #define IMS_PCU_SERIAL_NUMBER_LEN … #define IMS_PCU_DOM_LEN … #define IMS_PCU_FW_VERSION_LEN … #define IMS_PCU_BL_VERSION_LEN … #define IMS_PCU_BL_RESET_REASON_LEN … #define IMS_PCU_PCU_B_DEVICE_ID … #define IMS_PCU_BUF_SIZE … struct ims_pcu { … }; /********************************************************************* * Buttons Input device support * *********************************************************************/ static const unsigned short ims_pcu_keymap_1[] = …; static const unsigned short ims_pcu_keymap_2[] = …; static const unsigned short ims_pcu_keymap_3[] = …; static const unsigned short ims_pcu_keymap_4[] = …; static const unsigned short ims_pcu_keymap_5[] = …; struct ims_pcu_device_info { … }; #define IMS_PCU_DEVINFO(_n, _gamepad) … static const struct ims_pcu_device_info ims_pcu_device_info[] = …; static void ims_pcu_buttons_report(struct ims_pcu *pcu, u32 data) { … } static int ims_pcu_setup_buttons(struct ims_pcu *pcu, const unsigned short *keymap, size_t keymap_len) { … } static void ims_pcu_destroy_buttons(struct ims_pcu *pcu) { … } /********************************************************************* * Gamepad Input device support * *********************************************************************/ static void ims_pcu_gamepad_report(struct ims_pcu *pcu, u32 data) { … } static int ims_pcu_setup_gamepad(struct ims_pcu *pcu) { … } static void ims_pcu_destroy_gamepad(struct ims_pcu *pcu) { … } /********************************************************************* * PCU Communication protocol handling * *********************************************************************/ #define IMS_PCU_PROTOCOL_STX … #define IMS_PCU_PROTOCOL_ETX … #define IMS_PCU_PROTOCOL_DLE … /* PCU commands */ #define IMS_PCU_CMD_STATUS … #define IMS_PCU_CMD_PCU_RESET … #define IMS_PCU_CMD_RESET_REASON … #define IMS_PCU_CMD_SEND_BUTTONS … #define IMS_PCU_CMD_JUMP_TO_BTLDR … #define IMS_PCU_CMD_GET_INFO … #define IMS_PCU_CMD_SET_BRIGHTNESS … #define IMS_PCU_CMD_EEPROM … #define IMS_PCU_CMD_GET_FW_VERSION … #define IMS_PCU_CMD_GET_BL_VERSION … #define IMS_PCU_CMD_SET_INFO … #define IMS_PCU_CMD_GET_BRIGHTNESS … #define IMS_PCU_CMD_GET_DEVICE_ID … #define IMS_PCU_CMD_SPECIAL_INFO … #define IMS_PCU_CMD_BOOTLOADER … #define IMS_PCU_CMD_OFN_SET_CONFIG … #define IMS_PCU_CMD_OFN_GET_CONFIG … /* PCU responses */ #define IMS_PCU_RSP_STATUS … #define IMS_PCU_RSP_PCU_RESET … #define IMS_PCU_RSP_RESET_REASON … #define IMS_PCU_RSP_SEND_BUTTONS … #define IMS_PCU_RSP_JUMP_TO_BTLDR … #define IMS_PCU_RSP_GET_INFO … #define IMS_PCU_RSP_SET_BRIGHTNESS … #define IMS_PCU_RSP_EEPROM … #define IMS_PCU_RSP_GET_FW_VERSION … #define IMS_PCU_RSP_GET_BL_VERSION … #define IMS_PCU_RSP_SET_INFO … #define IMS_PCU_RSP_GET_BRIGHTNESS … #define IMS_PCU_RSP_CMD_INVALID … #define IMS_PCU_RSP_GET_DEVICE_ID … #define IMS_PCU_RSP_SPECIAL_INFO … #define IMS_PCU_RSP_BOOTLOADER … #define IMS_PCU_RSP_OFN_SET_CONFIG … #define IMS_PCU_RSP_OFN_GET_CONFIG … #define IMS_PCU_RSP_EVNT_BUTTONS … #define IMS_PCU_GAMEPAD_MASK … #define IMS_PCU_MIN_PACKET_LEN … #define IMS_PCU_DATA_OFFSET … #define IMS_PCU_CMD_WRITE_TIMEOUT … #define IMS_PCU_CMD_RESPONSE_TIMEOUT … static void ims_pcu_report_events(struct ims_pcu *pcu) { … } static void ims_pcu_handle_response(struct ims_pcu *pcu) { … } static void ims_pcu_process_data(struct ims_pcu *pcu, struct urb *urb) { … } static bool ims_pcu_byte_needs_escape(u8 byte) { … } static int ims_pcu_send_cmd_chunk(struct ims_pcu *pcu, u8 command, int chunk, int len) { … } static int ims_pcu_send_command(struct ims_pcu *pcu, u8 command, const u8 *data, int len) { … } static int __ims_pcu_execute_command(struct ims_pcu *pcu, u8 command, const void *data, size_t len, u8 expected_response, int response_time) { … } #define ims_pcu_execute_command(pcu, code, data, len) … #define ims_pcu_execute_query(pcu, code) … /* Bootloader commands */ #define IMS_PCU_BL_CMD_QUERY_DEVICE … #define IMS_PCU_BL_CMD_UNLOCK_CONFIG … #define IMS_PCU_BL_CMD_ERASE_APP … #define IMS_PCU_BL_CMD_PROGRAM_DEVICE … #define IMS_PCU_BL_CMD_PROGRAM_COMPLETE … #define IMS_PCU_BL_CMD_READ_APP … #define IMS_PCU_BL_CMD_RESET_DEVICE … #define IMS_PCU_BL_CMD_LAUNCH_APP … /* Bootloader commands */ #define IMS_PCU_BL_RSP_QUERY_DEVICE … #define IMS_PCU_BL_RSP_UNLOCK_CONFIG … #define IMS_PCU_BL_RSP_ERASE_APP … #define IMS_PCU_BL_RSP_PROGRAM_DEVICE … #define IMS_PCU_BL_RSP_PROGRAM_COMPLETE … #define IMS_PCU_BL_RSP_READ_APP … #define IMS_PCU_BL_RSP_RESET_DEVICE … #define IMS_PCU_BL_RSP_LAUNCH_APP … #define IMS_PCU_BL_DATA_OFFSET … static int __ims_pcu_execute_bl_command(struct ims_pcu *pcu, u8 command, const void *data, size_t len, u8 expected_response, int response_time) { … } #define ims_pcu_execute_bl_command(pcu, code, data, len, timeout) … \ #define IMS_PCU_INFO_PART_OFFSET … #define IMS_PCU_INFO_DOM_OFFSET … #define IMS_PCU_INFO_SERIAL_OFFSET … #define IMS_PCU_SET_INFO_SIZE … static int ims_pcu_get_info(struct ims_pcu *pcu) { … } static int ims_pcu_set_info(struct ims_pcu *pcu) { … } static int ims_pcu_switch_to_bootloader(struct ims_pcu *pcu) { … } /********************************************************************* * Firmware Update handling * *********************************************************************/ #define IMS_PCU_FIRMWARE_NAME … struct ims_pcu_flash_fmt { … }; static unsigned int ims_pcu_count_fw_records(const struct firmware *fw) { … } static int ims_pcu_verify_block(struct ims_pcu *pcu, u32 addr, u8 len, const u8 *data) { … } static int ims_pcu_flash_firmware(struct ims_pcu *pcu, const struct firmware *fw, unsigned int n_fw_records) { … } static int ims_pcu_handle_firmware_update(struct ims_pcu *pcu, const struct firmware *fw) { … } static void ims_pcu_process_async_firmware(const struct firmware *fw, void *context) { … } /********************************************************************* * Backlight LED device support * *********************************************************************/ #define IMS_PCU_MAX_BRIGHTNESS … static int ims_pcu_backlight_set_brightness(struct led_classdev *cdev, enum led_brightness value) { … } static enum led_brightness ims_pcu_backlight_get_brightness(struct led_classdev *cdev) { … } static int ims_pcu_setup_backlight(struct ims_pcu *pcu) { … } static void ims_pcu_destroy_backlight(struct ims_pcu *pcu) { … } /********************************************************************* * Sysfs attributes handling * *********************************************************************/ struct ims_pcu_attribute { … }; static ssize_t ims_pcu_attribute_show(struct device *dev, struct device_attribute *dattr, char *buf) { … } static ssize_t ims_pcu_attribute_store(struct device *dev, struct device_attribute *dattr, const char *buf, size_t count) { … } #define IMS_PCU_ATTR(_field, _mode) … #define IMS_PCU_RO_ATTR(_field) … #define IMS_PCU_RW_ATTR(_field) … static IMS_PCU_RW_ATTR(part_number); static IMS_PCU_RW_ATTR(serial_number); static IMS_PCU_RW_ATTR(date_of_manufacturing); static IMS_PCU_RO_ATTR(fw_version); static IMS_PCU_RO_ATTR(bl_version); static IMS_PCU_RO_ATTR(reset_reason); static ssize_t ims_pcu_reset_device(struct device *dev, struct device_attribute *dattr, const char *buf, size_t count) { … } static DEVICE_ATTR(reset_device, S_IWUSR, NULL, ims_pcu_reset_device); static ssize_t ims_pcu_update_firmware_store(struct device *dev, struct device_attribute *dattr, const char *buf, size_t count) { … } static DEVICE_ATTR(update_firmware, S_IWUSR, NULL, ims_pcu_update_firmware_store); static ssize_t ims_pcu_update_firmware_status_show(struct device *dev, struct device_attribute *dattr, char *buf) { … } static DEVICE_ATTR(update_firmware_status, S_IRUGO, ims_pcu_update_firmware_status_show, NULL); static struct attribute *ims_pcu_attrs[] = …; static umode_t ims_pcu_is_attr_visible(struct kobject *kobj, struct attribute *attr, int n) { … } static const struct attribute_group ims_pcu_attr_group = …; /* Support for a separate OFN attribute group */ #define OFN_REG_RESULT_OFFSET … static int ims_pcu_read_ofn_config(struct ims_pcu *pcu, u8 addr, u8 *data) { … } static int ims_pcu_write_ofn_config(struct ims_pcu *pcu, u8 addr, u8 data) { … } static ssize_t ims_pcu_ofn_reg_data_show(struct device *dev, struct device_attribute *dattr, char *buf) { … } static ssize_t ims_pcu_ofn_reg_data_store(struct device *dev, struct device_attribute *dattr, const char *buf, size_t count) { … } static DEVICE_ATTR(reg_data, S_IRUGO | S_IWUSR, ims_pcu_ofn_reg_data_show, ims_pcu_ofn_reg_data_store); static ssize_t ims_pcu_ofn_reg_addr_show(struct device *dev, struct device_attribute *dattr, char *buf) { … } static ssize_t ims_pcu_ofn_reg_addr_store(struct device *dev, struct device_attribute *dattr, const char *buf, size_t count) { … } static DEVICE_ATTR(reg_addr, S_IRUGO | S_IWUSR, ims_pcu_ofn_reg_addr_show, ims_pcu_ofn_reg_addr_store); struct ims_pcu_ofn_bit_attribute { … }; static ssize_t ims_pcu_ofn_bit_show(struct device *dev, struct device_attribute *dattr, char *buf) { … } static ssize_t ims_pcu_ofn_bit_store(struct device *dev, struct device_attribute *dattr, const char *buf, size_t count) { … } #define IMS_PCU_OFN_BIT_ATTR(_field, _addr, _nr) … static IMS_PCU_OFN_BIT_ATTR(engine_enable, 0x60, 7); static IMS_PCU_OFN_BIT_ATTR(speed_enable, 0x60, 6); static IMS_PCU_OFN_BIT_ATTR(assert_enable, 0x60, 5); static IMS_PCU_OFN_BIT_ATTR(xyquant_enable, 0x60, 4); static IMS_PCU_OFN_BIT_ATTR(xyscale_enable, 0x60, 1); static IMS_PCU_OFN_BIT_ATTR(scale_x2, 0x63, 6); static IMS_PCU_OFN_BIT_ATTR(scale_y2, 0x63, 7); static struct attribute *ims_pcu_ofn_attrs[] = …; static umode_t ims_pcu_ofn_is_attr_visible(struct kobject *kobj, struct attribute *attr, int n) { … } static const struct attribute_group ims_pcu_ofn_attr_group = …; static void ims_pcu_irq(struct urb *urb) { … } static int ims_pcu_buffers_alloc(struct ims_pcu *pcu) { … } static void ims_pcu_buffers_free(struct ims_pcu *pcu) { … } static const struct usb_cdc_union_desc * ims_pcu_get_cdc_union_desc(struct usb_interface *intf) { … } static int ims_pcu_parse_cdc_data(struct usb_interface *intf, struct ims_pcu *pcu) { … } static int ims_pcu_start_io(struct ims_pcu *pcu) { … } static void ims_pcu_stop_io(struct ims_pcu *pcu) { … } static int ims_pcu_line_setup(struct ims_pcu *pcu) { … } static int ims_pcu_get_device_info(struct ims_pcu *pcu) { … } static int ims_pcu_identify_type(struct ims_pcu *pcu, u8 *device_id) { … } static int ims_pcu_init_application_mode(struct ims_pcu *pcu) { … } static void ims_pcu_destroy_application_mode(struct ims_pcu *pcu) { … } static int ims_pcu_init_bootloader_mode(struct ims_pcu *pcu) { … } static void ims_pcu_destroy_bootloader_mode(struct ims_pcu *pcu) { … } #define IMS_PCU_APPLICATION_MODE … #define IMS_PCU_BOOTLOADER_MODE … static struct usb_driver ims_pcu_driver; static int ims_pcu_probe(struct usb_interface *intf, const struct usb_device_id *id) { … } static void ims_pcu_disconnect(struct usb_interface *intf) { … } #ifdef CONFIG_PM static int ims_pcu_suspend(struct usb_interface *intf, pm_message_t message) { … } static int ims_pcu_resume(struct usb_interface *intf) { … } #endif static const struct usb_device_id ims_pcu_id_table[] = …; static const struct attribute_group *ims_pcu_sysfs_groups[] = …; static struct usb_driver ims_pcu_driver = …; module_usb_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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