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820 lines
24 KiB
820 lines
24 KiB
// SPDX-License-Identifier: GPL-2.0+
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/*
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* HID driver for Nintendo Switch Joy-Cons and Pro Controllers
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*
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* Copyright (c) 2019 Daniel J. Ogorchock <djogorchock@gmail.com>
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*
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* The following resources/projects were referenced for this driver:
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* https://github.com/dekuNukem/Nintendo_Switch_Reverse_Engineering
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* https://gitlab.com/pjranki/joycon-linux-kernel (Peter Rankin)
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* https://github.com/FrotBot/SwitchProConLinuxUSB
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* https://github.com/MTCKC/ProconXInput
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* hid-wiimote kernel hid driver
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* hid-logitech-hidpp driver
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*
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* This driver supports the Nintendo Switch Joy-Cons and Pro Controllers. The
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* Pro Controllers can either be used over USB or Bluetooth.
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*
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* The driver will retrieve the factory calibration info from the controllers,
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* so little to no user calibration should be required.
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*
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*/
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#include "hid-ids.h"
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/hid.h>
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#include <linux/input.h>
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#include <linux/module.h>
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#include <linux/spinlock.h>
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/*
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* Reference the url below for the following HID report defines:
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* https://github.com/dekuNukem/Nintendo_Switch_Reverse_Engineering
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*/
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/* Output Reports */
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static const u8 JC_OUTPUT_RUMBLE_AND_SUBCMD = 0x01;
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static const u8 JC_OUTPUT_FW_UPDATE_PKT = 0x03;
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static const u8 JC_OUTPUT_RUMBLE_ONLY = 0x10;
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static const u8 JC_OUTPUT_MCU_DATA = 0x11;
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static const u8 JC_OUTPUT_USB_CMD = 0x80;
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/* Subcommand IDs */
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static const u8 JC_SUBCMD_STATE /*= 0x00*/;
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static const u8 JC_SUBCMD_MANUAL_BT_PAIRING = 0x01;
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static const u8 JC_SUBCMD_REQ_DEV_INFO = 0x02;
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static const u8 JC_SUBCMD_SET_REPORT_MODE = 0x03;
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static const u8 JC_SUBCMD_TRIGGERS_ELAPSED = 0x04;
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static const u8 JC_SUBCMD_GET_PAGE_LIST_STATE = 0x05;
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static const u8 JC_SUBCMD_SET_HCI_STATE = 0x06;
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static const u8 JC_SUBCMD_RESET_PAIRING_INFO = 0x07;
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static const u8 JC_SUBCMD_LOW_POWER_MODE = 0x08;
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static const u8 JC_SUBCMD_SPI_FLASH_READ = 0x10;
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static const u8 JC_SUBCMD_SPI_FLASH_WRITE = 0x11;
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static const u8 JC_SUBCMD_RESET_MCU = 0x20;
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static const u8 JC_SUBCMD_SET_MCU_CONFIG = 0x21;
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static const u8 JC_SUBCMD_SET_MCU_STATE = 0x22;
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static const u8 JC_SUBCMD_SET_PLAYER_LIGHTS = 0x30;
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static const u8 JC_SUBCMD_GET_PLAYER_LIGHTS = 0x31;
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static const u8 JC_SUBCMD_SET_HOME_LIGHT = 0x38;
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static const u8 JC_SUBCMD_ENABLE_IMU = 0x40;
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static const u8 JC_SUBCMD_SET_IMU_SENSITIVITY = 0x41;
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static const u8 JC_SUBCMD_WRITE_IMU_REG = 0x42;
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static const u8 JC_SUBCMD_READ_IMU_REG = 0x43;
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static const u8 JC_SUBCMD_ENABLE_VIBRATION = 0x48;
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static const u8 JC_SUBCMD_GET_REGULATED_VOLTAGE = 0x50;
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/* Input Reports */
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static const u8 JC_INPUT_BUTTON_EVENT = 0x3F;
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static const u8 JC_INPUT_SUBCMD_REPLY = 0x21;
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static const u8 JC_INPUT_IMU_DATA = 0x30;
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static const u8 JC_INPUT_MCU_DATA = 0x31;
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static const u8 JC_INPUT_USB_RESPONSE = 0x81;
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/* Feature Reports */
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static const u8 JC_FEATURE_LAST_SUBCMD = 0x02;
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static const u8 JC_FEATURE_OTA_FW_UPGRADE = 0x70;
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static const u8 JC_FEATURE_SETUP_MEM_READ = 0x71;
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static const u8 JC_FEATURE_MEM_READ = 0x72;
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static const u8 JC_FEATURE_ERASE_MEM_SECTOR = 0x73;
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static const u8 JC_FEATURE_MEM_WRITE = 0x74;
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static const u8 JC_FEATURE_LAUNCH = 0x75;
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/* USB Commands */
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static const u8 JC_USB_CMD_CONN_STATUS = 0x01;
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static const u8 JC_USB_CMD_HANDSHAKE = 0x02;
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static const u8 JC_USB_CMD_BAUDRATE_3M = 0x03;
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static const u8 JC_USB_CMD_NO_TIMEOUT = 0x04;
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static const u8 JC_USB_CMD_EN_TIMEOUT = 0x05;
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static const u8 JC_USB_RESET = 0x06;
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static const u8 JC_USB_PRE_HANDSHAKE = 0x91;
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static const u8 JC_USB_SEND_UART = 0x92;
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/* SPI storage addresses of factory calibration data */
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static const u16 JC_CAL_DATA_START = 0x603d;
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static const u16 JC_CAL_DATA_END = 0x604e;
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#define JC_CAL_DATA_SIZE (JC_CAL_DATA_END - JC_CAL_DATA_START + 1)
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/* The raw analog joystick values will be mapped in terms of this magnitude */
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static const u16 JC_MAX_STICK_MAG = 32767;
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static const u16 JC_STICK_FUZZ = 250;
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static const u16 JC_STICK_FLAT = 500;
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/* States for controller state machine */
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enum joycon_ctlr_state {
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JOYCON_CTLR_STATE_INIT,
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JOYCON_CTLR_STATE_READ,
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};
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struct joycon_stick_cal {
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s32 max;
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s32 min;
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s32 center;
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};
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/*
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* All the controller's button values are stored in a u32.
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* They can be accessed with bitwise ANDs.
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*/
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static const u32 JC_BTN_Y = BIT(0);
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static const u32 JC_BTN_X = BIT(1);
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static const u32 JC_BTN_B = BIT(2);
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static const u32 JC_BTN_A = BIT(3);
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static const u32 JC_BTN_SR_R = BIT(4);
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static const u32 JC_BTN_SL_R = BIT(5);
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static const u32 JC_BTN_R = BIT(6);
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static const u32 JC_BTN_ZR = BIT(7);
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static const u32 JC_BTN_MINUS = BIT(8);
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static const u32 JC_BTN_PLUS = BIT(9);
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static const u32 JC_BTN_RSTICK = BIT(10);
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static const u32 JC_BTN_LSTICK = BIT(11);
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static const u32 JC_BTN_HOME = BIT(12);
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static const u32 JC_BTN_CAP = BIT(13); /* capture button */
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static const u32 JC_BTN_DOWN = BIT(16);
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static const u32 JC_BTN_UP = BIT(17);
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static const u32 JC_BTN_RIGHT = BIT(18);
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static const u32 JC_BTN_LEFT = BIT(19);
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static const u32 JC_BTN_SR_L = BIT(20);
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static const u32 JC_BTN_SL_L = BIT(21);
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static const u32 JC_BTN_L = BIT(22);
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static const u32 JC_BTN_ZL = BIT(23);
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enum joycon_msg_type {
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JOYCON_MSG_TYPE_NONE,
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JOYCON_MSG_TYPE_USB,
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JOYCON_MSG_TYPE_SUBCMD,
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};
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struct joycon_subcmd_request {
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u8 output_id; /* must be 0x01 for subcommand, 0x10 for rumble only */
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u8 packet_num; /* incremented every send */
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u8 rumble_data[8];
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u8 subcmd_id;
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u8 data[0]; /* length depends on the subcommand */
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} __packed;
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struct joycon_subcmd_reply {
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u8 ack; /* MSB 1 for ACK, 0 for NACK */
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u8 id; /* id of requested subcmd */
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u8 data[0]; /* will be at most 35 bytes */
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} __packed;
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struct joycon_input_report {
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u8 id;
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u8 timer;
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u8 bat_con; /* battery and connection info */
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u8 button_status[3];
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u8 left_stick[3];
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u8 right_stick[3];
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u8 vibrator_report;
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/*
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* If support for firmware updates, gyroscope data, and/or NFC/IR
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* are added in the future, this can be swapped for a union.
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*/
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struct joycon_subcmd_reply reply;
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} __packed;
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#define JC_MAX_RESP_SIZE (sizeof(struct joycon_input_report) + 35)
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/* Each physical controller is associated with a joycon_ctlr struct */
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struct joycon_ctlr {
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struct hid_device *hdev;
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struct input_dev *input;
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enum joycon_ctlr_state ctlr_state;
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/* The following members are used for synchronous sends/receives */
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enum joycon_msg_type msg_type;
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u8 subcmd_num;
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struct mutex output_mutex;
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u8 input_buf[JC_MAX_RESP_SIZE];
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wait_queue_head_t wait;
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bool received_resp;
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u8 usb_ack_match;
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u8 subcmd_ack_match;
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/* factory calibration data */
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struct joycon_stick_cal left_stick_cal_x;
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struct joycon_stick_cal left_stick_cal_y;
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struct joycon_stick_cal right_stick_cal_x;
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struct joycon_stick_cal right_stick_cal_y;
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};
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static int __joycon_hid_send(struct hid_device *hdev, u8 *data, size_t len)
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{
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u8 *buf;
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int ret;
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buf = kmemdup(data, len, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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ret = hid_hw_output_report(hdev, buf, len);
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kfree(buf);
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if (ret < 0)
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hid_dbg(hdev, "Failed to send output report ret=%d\n", ret);
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return ret;
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}
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static int joycon_hid_send_sync(struct joycon_ctlr *ctlr, u8 *data, size_t len)
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{
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int ret;
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ret = __joycon_hid_send(ctlr->hdev, data, len);
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if (ret < 0) {
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memset(ctlr->input_buf, 0, JC_MAX_RESP_SIZE);
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return ret;
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}
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if (!wait_event_timeout(ctlr->wait, ctlr->received_resp, HZ)) {
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hid_dbg(ctlr->hdev, "synchronous send/receive timed out\n");
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memset(ctlr->input_buf, 0, JC_MAX_RESP_SIZE);
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return -ETIMEDOUT;
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}
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ctlr->received_resp = false;
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return 0;
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}
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static int joycon_send_usb(struct joycon_ctlr *ctlr, u8 cmd)
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{
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int ret;
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u8 buf[2] = {JC_OUTPUT_USB_CMD};
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buf[1] = cmd;
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ctlr->usb_ack_match = cmd;
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ctlr->msg_type = JOYCON_MSG_TYPE_USB;
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ret = joycon_hid_send_sync(ctlr, buf, sizeof(buf));
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if (ret)
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hid_dbg(ctlr->hdev, "send usb command failed; ret=%d\n", ret);
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return ret;
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}
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static int joycon_send_subcmd(struct joycon_ctlr *ctlr,
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struct joycon_subcmd_request *subcmd,
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size_t data_len)
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{
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int ret;
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subcmd->output_id = JC_OUTPUT_RUMBLE_AND_SUBCMD;
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subcmd->packet_num = ctlr->subcmd_num;
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if (++ctlr->subcmd_num > 0xF)
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ctlr->subcmd_num = 0;
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ctlr->subcmd_ack_match = subcmd->subcmd_id;
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ctlr->msg_type = JOYCON_MSG_TYPE_SUBCMD;
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ret = joycon_hid_send_sync(ctlr, (u8 *)subcmd,
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sizeof(*subcmd) + data_len);
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if (ret < 0)
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hid_dbg(ctlr->hdev, "send subcommand failed; ret=%d\n", ret);
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else
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ret = 0;
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return ret;
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}
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/* Supply nibbles for flash and on. Ones correspond to active */
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static int joycon_set_player_leds(struct joycon_ctlr *ctlr, u8 flash, u8 on)
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{
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struct joycon_subcmd_request *req;
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u8 buffer[sizeof(*req) + 1] = { 0 };
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req = (struct joycon_subcmd_request *)buffer;
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req->subcmd_id = JC_SUBCMD_SET_PLAYER_LIGHTS;
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req->data[0] = (flash << 4) | on;
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hid_dbg(ctlr->hdev, "setting player leds\n");
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return joycon_send_subcmd(ctlr, req, 1);
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}
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static const u16 DFLT_STICK_CAL_CEN = 2000;
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static const u16 DFLT_STICK_CAL_MAX = 3500;
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static const u16 DFLT_STICK_CAL_MIN = 500;
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static int joycon_request_calibration(struct joycon_ctlr *ctlr)
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{
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struct joycon_subcmd_request *req;
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u8 buffer[sizeof(*req) + 5] = { 0 };
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struct joycon_input_report *report;
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struct joycon_stick_cal *cal_x;
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struct joycon_stick_cal *cal_y;
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s32 x_max_above;
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s32 x_min_below;
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s32 y_max_above;
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s32 y_min_below;
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u8 *data;
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u8 *raw_cal;
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int ret;
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req = (struct joycon_subcmd_request *)buffer;
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req->subcmd_id = JC_SUBCMD_SPI_FLASH_READ;
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data = req->data;
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data[0] = 0xFF & JC_CAL_DATA_START;
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data[1] = 0xFF & (JC_CAL_DATA_START >> 8);
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data[2] = 0xFF & (JC_CAL_DATA_START >> 16);
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data[3] = 0xFF & (JC_CAL_DATA_START >> 24);
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data[4] = JC_CAL_DATA_SIZE;
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hid_dbg(ctlr->hdev, "requesting cal data\n");
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ret = joycon_send_subcmd(ctlr, req, 5);
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if (ret) {
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hid_warn(ctlr->hdev,
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"Failed to read stick cal, using defaults; ret=%d\n",
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ret);
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ctlr->left_stick_cal_x.center = DFLT_STICK_CAL_CEN;
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ctlr->left_stick_cal_x.max = DFLT_STICK_CAL_MAX;
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ctlr->left_stick_cal_x.min = DFLT_STICK_CAL_MIN;
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ctlr->left_stick_cal_y.center = DFLT_STICK_CAL_CEN;
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ctlr->left_stick_cal_y.max = DFLT_STICK_CAL_MAX;
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ctlr->left_stick_cal_y.min = DFLT_STICK_CAL_MIN;
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ctlr->right_stick_cal_x.center = DFLT_STICK_CAL_CEN;
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ctlr->right_stick_cal_x.max = DFLT_STICK_CAL_MAX;
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ctlr->right_stick_cal_x.min = DFLT_STICK_CAL_MIN;
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ctlr->right_stick_cal_y.center = DFLT_STICK_CAL_CEN;
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ctlr->right_stick_cal_y.max = DFLT_STICK_CAL_MAX;
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ctlr->right_stick_cal_y.min = DFLT_STICK_CAL_MIN;
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return ret;
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}
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report = (struct joycon_input_report *)ctlr->input_buf;
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raw_cal = &report->reply.data[5];
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/* left stick calibration parsing */
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cal_x = &ctlr->left_stick_cal_x;
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cal_y = &ctlr->left_stick_cal_y;
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x_max_above = hid_field_extract(ctlr->hdev, (raw_cal + 0), 0, 12);
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y_max_above = hid_field_extract(ctlr->hdev, (raw_cal + 1), 4, 12);
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cal_x->center = hid_field_extract(ctlr->hdev, (raw_cal + 3), 0, 12);
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cal_y->center = hid_field_extract(ctlr->hdev, (raw_cal + 4), 4, 12);
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x_min_below = hid_field_extract(ctlr->hdev, (raw_cal + 6), 0, 12);
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y_min_below = hid_field_extract(ctlr->hdev, (raw_cal + 7), 4, 12);
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cal_x->max = cal_x->center + x_max_above;
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cal_x->min = cal_x->center - x_min_below;
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cal_y->max = cal_y->center + y_max_above;
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cal_y->min = cal_y->center - y_min_below;
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/* right stick calibration parsing */
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raw_cal += 9;
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cal_x = &ctlr->right_stick_cal_x;
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cal_y = &ctlr->right_stick_cal_y;
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cal_x->center = hid_field_extract(ctlr->hdev, (raw_cal + 0), 0, 12);
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cal_y->center = hid_field_extract(ctlr->hdev, (raw_cal + 1), 4, 12);
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x_min_below = hid_field_extract(ctlr->hdev, (raw_cal + 3), 0, 12);
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y_min_below = hid_field_extract(ctlr->hdev, (raw_cal + 4), 4, 12);
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x_max_above = hid_field_extract(ctlr->hdev, (raw_cal + 6), 0, 12);
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y_max_above = hid_field_extract(ctlr->hdev, (raw_cal + 7), 4, 12);
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cal_x->max = cal_x->center + x_max_above;
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cal_x->min = cal_x->center - x_min_below;
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cal_y->max = cal_y->center + y_max_above;
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cal_y->min = cal_y->center - y_min_below;
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hid_dbg(ctlr->hdev, "calibration:\n"
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"l_x_c=%d l_x_max=%d l_x_min=%d\n"
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"l_y_c=%d l_y_max=%d l_y_min=%d\n"
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"r_x_c=%d r_x_max=%d r_x_min=%d\n"
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"r_y_c=%d r_y_max=%d r_y_min=%d\n",
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ctlr->left_stick_cal_x.center,
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ctlr->left_stick_cal_x.max,
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ctlr->left_stick_cal_x.min,
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ctlr->left_stick_cal_y.center,
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ctlr->left_stick_cal_y.max,
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ctlr->left_stick_cal_y.min,
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ctlr->right_stick_cal_x.center,
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ctlr->right_stick_cal_x.max,
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ctlr->right_stick_cal_x.min,
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ctlr->right_stick_cal_y.center,
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ctlr->right_stick_cal_y.max,
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ctlr->right_stick_cal_y.min);
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return 0;
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}
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static int joycon_set_report_mode(struct joycon_ctlr *ctlr)
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{
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struct joycon_subcmd_request *req;
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u8 buffer[sizeof(*req) + 1] = { 0 };
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req = (struct joycon_subcmd_request *)buffer;
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req->subcmd_id = JC_SUBCMD_SET_REPORT_MODE;
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req->data[0] = 0x30; /* standard, full report mode */
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hid_dbg(ctlr->hdev, "setting controller report mode\n");
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return joycon_send_subcmd(ctlr, req, 1);
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}
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|
static s32 joycon_map_stick_val(struct joycon_stick_cal *cal, s32 val)
|
|
{
|
|
s32 center = cal->center;
|
|
s32 min = cal->min;
|
|
s32 max = cal->max;
|
|
s32 new_val;
|
|
|
|
if (val > center) {
|
|
new_val = (val - center) * JC_MAX_STICK_MAG;
|
|
new_val /= (max - center);
|
|
} else {
|
|
new_val = (center - val) * -JC_MAX_STICK_MAG;
|
|
new_val /= (center - min);
|
|
}
|
|
new_val = clamp(new_val, (s32)-JC_MAX_STICK_MAG, (s32)JC_MAX_STICK_MAG);
|
|
return new_val;
|
|
}
|
|
|
|
static void joycon_parse_report(struct joycon_ctlr *ctlr,
|
|
struct joycon_input_report *rep)
|
|
{
|
|
struct input_dev *dev = ctlr->input;
|
|
u32 btns;
|
|
u32 id = ctlr->hdev->product;
|
|
|
|
btns = hid_field_extract(ctlr->hdev, rep->button_status, 0, 24);
|
|
|
|
if (id != USB_DEVICE_ID_NINTENDO_JOYCONR) {
|
|
u16 raw_x;
|
|
u16 raw_y;
|
|
s32 x;
|
|
s32 y;
|
|
|
|
/* get raw stick values */
|
|
raw_x = hid_field_extract(ctlr->hdev, rep->left_stick, 0, 12);
|
|
raw_y = hid_field_extract(ctlr->hdev,
|
|
rep->left_stick + 1, 4, 12);
|
|
/* map the stick values */
|
|
x = joycon_map_stick_val(&ctlr->left_stick_cal_x, raw_x);
|
|
y = -joycon_map_stick_val(&ctlr->left_stick_cal_y, raw_y);
|
|
/* report sticks */
|
|
input_report_abs(dev, ABS_X, x);
|
|
input_report_abs(dev, ABS_Y, y);
|
|
|
|
/* report buttons */
|
|
input_report_key(dev, BTN_TL, btns & JC_BTN_L);
|
|
input_report_key(dev, BTN_TL2, btns & JC_BTN_ZL);
|
|
if (id != USB_DEVICE_ID_NINTENDO_PROCON) {
|
|
/* Report the S buttons as the non-existent triggers */
|
|
input_report_key(dev, BTN_TR, btns & JC_BTN_SL_L);
|
|
input_report_key(dev, BTN_TR2, btns & JC_BTN_SR_L);
|
|
}
|
|
input_report_key(dev, BTN_SELECT, btns & JC_BTN_MINUS);
|
|
input_report_key(dev, BTN_THUMBL, btns & JC_BTN_LSTICK);
|
|
input_report_key(dev, BTN_Z, btns & JC_BTN_CAP);
|
|
input_report_key(dev, BTN_DPAD_DOWN, btns & JC_BTN_DOWN);
|
|
input_report_key(dev, BTN_DPAD_UP, btns & JC_BTN_UP);
|
|
input_report_key(dev, BTN_DPAD_RIGHT, btns & JC_BTN_RIGHT);
|
|
input_report_key(dev, BTN_DPAD_LEFT, btns & JC_BTN_LEFT);
|
|
}
|
|
if (id != USB_DEVICE_ID_NINTENDO_JOYCONL) {
|
|
u16 raw_x;
|
|
u16 raw_y;
|
|
s32 x;
|
|
s32 y;
|
|
|
|
/* get raw stick values */
|
|
raw_x = hid_field_extract(ctlr->hdev, rep->right_stick, 0, 12);
|
|
raw_y = hid_field_extract(ctlr->hdev,
|
|
rep->right_stick + 1, 4, 12);
|
|
/* map stick values */
|
|
x = joycon_map_stick_val(&ctlr->right_stick_cal_x, raw_x);
|
|
y = -joycon_map_stick_val(&ctlr->right_stick_cal_y, raw_y);
|
|
/* report sticks */
|
|
input_report_abs(dev, ABS_RX, x);
|
|
input_report_abs(dev, ABS_RY, y);
|
|
|
|
/* report buttons */
|
|
input_report_key(dev, BTN_TR, btns & JC_BTN_R);
|
|
input_report_key(dev, BTN_TR2, btns & JC_BTN_ZR);
|
|
if (id != USB_DEVICE_ID_NINTENDO_PROCON) {
|
|
/* Report the S buttons as the non-existent triggers */
|
|
input_report_key(dev, BTN_TL, btns & JC_BTN_SL_R);
|
|
input_report_key(dev, BTN_TL2, btns & JC_BTN_SR_R);
|
|
}
|
|
input_report_key(dev, BTN_START, btns & JC_BTN_PLUS);
|
|
input_report_key(dev, BTN_THUMBR, btns & JC_BTN_RSTICK);
|
|
input_report_key(dev, BTN_MODE, btns & JC_BTN_HOME);
|
|
input_report_key(dev, BTN_WEST, btns & JC_BTN_Y);
|
|
input_report_key(dev, BTN_NORTH, btns & JC_BTN_X);
|
|
input_report_key(dev, BTN_EAST, btns & JC_BTN_A);
|
|
input_report_key(dev, BTN_SOUTH, btns & JC_BTN_B);
|
|
}
|
|
|
|
input_sync(dev);
|
|
}
|
|
|
|
|
|
static const unsigned int joycon_button_inputs_l[] = {
|
|
BTN_SELECT, BTN_Z, BTN_THUMBL,
|
|
BTN_DPAD_UP, BTN_DPAD_DOWN, BTN_DPAD_LEFT, BTN_DPAD_RIGHT,
|
|
BTN_TL, BTN_TL2,
|
|
0 /* 0 signals end of array */
|
|
};
|
|
|
|
static const unsigned int joycon_button_inputs_r[] = {
|
|
BTN_START, BTN_MODE, BTN_THUMBR,
|
|
BTN_SOUTH, BTN_EAST, BTN_NORTH, BTN_WEST,
|
|
BTN_TR, BTN_TR2,
|
|
0 /* 0 signals end of array */
|
|
};
|
|
|
|
static DEFINE_MUTEX(joycon_input_num_mutex);
|
|
static int joycon_input_create(struct joycon_ctlr *ctlr)
|
|
{
|
|
struct hid_device *hdev;
|
|
static int input_num = 1;
|
|
const char *name;
|
|
int ret;
|
|
int i;
|
|
|
|
hdev = ctlr->hdev;
|
|
|
|
switch (hdev->product) {
|
|
case USB_DEVICE_ID_NINTENDO_PROCON:
|
|
name = "Nintendo Switch Pro Controller";
|
|
break;
|
|
case USB_DEVICE_ID_NINTENDO_JOYCONL:
|
|
name = "Nintendo Switch Left Joy-Con";
|
|
break;
|
|
case USB_DEVICE_ID_NINTENDO_JOYCONR:
|
|
name = "Nintendo Switch Right Joy-Con";
|
|
break;
|
|
default: /* Should be impossible */
|
|
hid_err(hdev, "Invalid hid product\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ctlr->input = devm_input_allocate_device(&hdev->dev);
|
|
if (!ctlr->input)
|
|
return -ENOMEM;
|
|
ctlr->input->id.bustype = hdev->bus;
|
|
ctlr->input->id.vendor = hdev->vendor;
|
|
ctlr->input->id.product = hdev->product;
|
|
ctlr->input->id.version = hdev->version;
|
|
ctlr->input->name = name;
|
|
input_set_drvdata(ctlr->input, ctlr);
|
|
|
|
|
|
/* set up sticks */
|
|
if (hdev->product != USB_DEVICE_ID_NINTENDO_JOYCONR) {
|
|
input_set_abs_params(ctlr->input, ABS_X,
|
|
-JC_MAX_STICK_MAG, JC_MAX_STICK_MAG,
|
|
JC_STICK_FUZZ, JC_STICK_FLAT);
|
|
input_set_abs_params(ctlr->input, ABS_Y,
|
|
-JC_MAX_STICK_MAG, JC_MAX_STICK_MAG,
|
|
JC_STICK_FUZZ, JC_STICK_FLAT);
|
|
}
|
|
if (hdev->product != USB_DEVICE_ID_NINTENDO_JOYCONL) {
|
|
input_set_abs_params(ctlr->input, ABS_RX,
|
|
-JC_MAX_STICK_MAG, JC_MAX_STICK_MAG,
|
|
JC_STICK_FUZZ, JC_STICK_FLAT);
|
|
input_set_abs_params(ctlr->input, ABS_RY,
|
|
-JC_MAX_STICK_MAG, JC_MAX_STICK_MAG,
|
|
JC_STICK_FUZZ, JC_STICK_FLAT);
|
|
}
|
|
|
|
/* set up buttons */
|
|
if (hdev->product != USB_DEVICE_ID_NINTENDO_JOYCONR) {
|
|
for (i = 0; joycon_button_inputs_l[i] > 0; i++)
|
|
input_set_capability(ctlr->input, EV_KEY,
|
|
joycon_button_inputs_l[i]);
|
|
}
|
|
if (hdev->product != USB_DEVICE_ID_NINTENDO_JOYCONL) {
|
|
for (i = 0; joycon_button_inputs_r[i] > 0; i++)
|
|
input_set_capability(ctlr->input, EV_KEY,
|
|
joycon_button_inputs_r[i]);
|
|
}
|
|
|
|
ret = input_register_device(ctlr->input);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Set the default controller player leds based on controller number */
|
|
mutex_lock(&joycon_input_num_mutex);
|
|
mutex_lock(&ctlr->output_mutex);
|
|
ret = joycon_set_player_leds(ctlr, 0, 0xF >> (4 - input_num));
|
|
if (ret)
|
|
hid_warn(ctlr->hdev, "Failed to set leds; ret=%d\n", ret);
|
|
mutex_unlock(&ctlr->output_mutex);
|
|
if (++input_num > 4)
|
|
input_num = 1;
|
|
mutex_unlock(&joycon_input_num_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Common handler for parsing inputs */
|
|
static int joycon_ctlr_read_handler(struct joycon_ctlr *ctlr, u8 *data,
|
|
int size)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (data[0] == JC_INPUT_SUBCMD_REPLY || data[0] == JC_INPUT_IMU_DATA ||
|
|
data[0] == JC_INPUT_MCU_DATA) {
|
|
if (size >= 12) /* make sure it contains the input report */
|
|
joycon_parse_report(ctlr,
|
|
(struct joycon_input_report *)data);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int joycon_ctlr_handle_event(struct joycon_ctlr *ctlr, u8 *data,
|
|
int size)
|
|
{
|
|
int ret = 0;
|
|
bool match = false;
|
|
struct joycon_input_report *report;
|
|
|
|
if (unlikely(mutex_is_locked(&ctlr->output_mutex)) &&
|
|
ctlr->msg_type != JOYCON_MSG_TYPE_NONE) {
|
|
switch (ctlr->msg_type) {
|
|
case JOYCON_MSG_TYPE_USB:
|
|
if (size < 2)
|
|
break;
|
|
if (data[0] == JC_INPUT_USB_RESPONSE &&
|
|
data[1] == ctlr->usb_ack_match)
|
|
match = true;
|
|
break;
|
|
case JOYCON_MSG_TYPE_SUBCMD:
|
|
if (size < sizeof(struct joycon_input_report) ||
|
|
data[0] != JC_INPUT_SUBCMD_REPLY)
|
|
break;
|
|
report = (struct joycon_input_report *)data;
|
|
if (report->reply.id == ctlr->subcmd_ack_match)
|
|
match = true;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (match) {
|
|
memcpy(ctlr->input_buf, data,
|
|
min(size, (int)JC_MAX_RESP_SIZE));
|
|
ctlr->msg_type = JOYCON_MSG_TYPE_NONE;
|
|
ctlr->received_resp = true;
|
|
wake_up(&ctlr->wait);
|
|
|
|
/* This message has been handled */
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if (ctlr->ctlr_state == JOYCON_CTLR_STATE_READ)
|
|
ret = joycon_ctlr_read_handler(ctlr, data, size);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int nintendo_hid_event(struct hid_device *hdev,
|
|
struct hid_report *report, u8 *raw_data, int size)
|
|
{
|
|
struct joycon_ctlr *ctlr = hid_get_drvdata(hdev);
|
|
|
|
if (size < 1)
|
|
return -EINVAL;
|
|
|
|
return joycon_ctlr_handle_event(ctlr, raw_data, size);
|
|
}
|
|
|
|
static int nintendo_hid_probe(struct hid_device *hdev,
|
|
const struct hid_device_id *id)
|
|
{
|
|
int ret;
|
|
struct joycon_ctlr *ctlr;
|
|
|
|
hid_dbg(hdev, "probe - start\n");
|
|
|
|
ctlr = devm_kzalloc(&hdev->dev, sizeof(*ctlr), GFP_KERNEL);
|
|
if (!ctlr) {
|
|
ret = -ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
ctlr->hdev = hdev;
|
|
ctlr->ctlr_state = JOYCON_CTLR_STATE_INIT;
|
|
hid_set_drvdata(hdev, ctlr);
|
|
mutex_init(&ctlr->output_mutex);
|
|
init_waitqueue_head(&ctlr->wait);
|
|
|
|
ret = hid_parse(hdev);
|
|
if (ret) {
|
|
hid_err(hdev, "HID parse failed\n");
|
|
goto err;
|
|
}
|
|
|
|
ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
|
|
if (ret) {
|
|
hid_err(hdev, "HW start failed\n");
|
|
goto err;
|
|
}
|
|
|
|
ret = hid_hw_open(hdev);
|
|
if (ret) {
|
|
hid_err(hdev, "cannot start hardware I/O\n");
|
|
goto err_stop;
|
|
}
|
|
|
|
hid_device_io_start(hdev);
|
|
|
|
/* Initialize the controller */
|
|
mutex_lock(&ctlr->output_mutex);
|
|
/* if handshake command fails, assume ble pro controller */
|
|
if (hdev->product == USB_DEVICE_ID_NINTENDO_PROCON &&
|
|
!joycon_send_usb(ctlr, JC_USB_CMD_HANDSHAKE)) {
|
|
hid_dbg(hdev, "detected USB controller\n");
|
|
/* set baudrate for improved latency */
|
|
ret = joycon_send_usb(ctlr, JC_USB_CMD_BAUDRATE_3M);
|
|
if (ret) {
|
|
hid_err(hdev, "Failed to set baudrate; ret=%d\n", ret);
|
|
goto err_mutex;
|
|
}
|
|
/* handshake */
|
|
ret = joycon_send_usb(ctlr, JC_USB_CMD_HANDSHAKE);
|
|
if (ret) {
|
|
hid_err(hdev, "Failed handshake; ret=%d\n", ret);
|
|
goto err_mutex;
|
|
}
|
|
/*
|
|
* Set no timeout (to keep controller in USB mode).
|
|
* This doesn't send a response, so ignore the timeout.
|
|
*/
|
|
joycon_send_usb(ctlr, JC_USB_CMD_NO_TIMEOUT);
|
|
}
|
|
|
|
/* get controller calibration data, and parse it */
|
|
ret = joycon_request_calibration(ctlr);
|
|
if (ret) {
|
|
/*
|
|
* We can function with default calibration, but it may be
|
|
* inaccurate. Provide a warning, and continue on.
|
|
*/
|
|
hid_warn(hdev, "Analog stick positions may be inaccurate\n");
|
|
}
|
|
|
|
/* Set the reporting mode to 0x30, which is the full report mode */
|
|
ret = joycon_set_report_mode(ctlr);
|
|
if (ret) {
|
|
hid_err(hdev, "Failed to set report mode; ret=%d\n", ret);
|
|
goto err_mutex;
|
|
}
|
|
|
|
mutex_unlock(&ctlr->output_mutex);
|
|
|
|
ret = joycon_input_create(ctlr);
|
|
if (ret) {
|
|
hid_err(hdev, "Failed to create input device; ret=%d\n", ret);
|
|
goto err_close;
|
|
}
|
|
|
|
ctlr->ctlr_state = JOYCON_CTLR_STATE_READ;
|
|
|
|
hid_dbg(hdev, "probe - success\n");
|
|
return 0;
|
|
|
|
err_mutex:
|
|
mutex_unlock(&ctlr->output_mutex);
|
|
err_close:
|
|
hid_hw_close(hdev);
|
|
err_stop:
|
|
hid_hw_stop(hdev);
|
|
err:
|
|
hid_err(hdev, "probe - fail = %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static void nintendo_hid_remove(struct hid_device *hdev)
|
|
{
|
|
hid_dbg(hdev, "remove\n");
|
|
hid_hw_close(hdev);
|
|
hid_hw_stop(hdev);
|
|
}
|
|
|
|
static const struct hid_device_id nintendo_hid_devices[] = {
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_NINTENDO,
|
|
USB_DEVICE_ID_NINTENDO_PROCON) },
|
|
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
|
|
USB_DEVICE_ID_NINTENDO_PROCON) },
|
|
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
|
|
USB_DEVICE_ID_NINTENDO_JOYCONL) },
|
|
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
|
|
USB_DEVICE_ID_NINTENDO_JOYCONR) },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(hid, nintendo_hid_devices);
|
|
|
|
static struct hid_driver nintendo_hid_driver = {
|
|
.name = "nintendo",
|
|
.id_table = nintendo_hid_devices,
|
|
.probe = nintendo_hid_probe,
|
|
.remove = nintendo_hid_remove,
|
|
.raw_event = nintendo_hid_event,
|
|
};
|
|
module_hid_driver(nintendo_hid_driver);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Daniel J. Ogorchock <djogorchock@gmail.com>");
|
|
MODULE_DESCRIPTION("Driver for Nintendo Switch Controllers");
|
|
|