| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * HID driver for Nintendo Switch Joy-Cons and Pro Controllers |
| * |
| * Copyright (c) 2019-2021 Daniel J. Ogorchock <djogorchock@gmail.com> |
| * Portions Copyright (c) 2020 Nadia Holmquist Pedersen <nadia@nhp.sh> |
| * Copyright (c) 2022 Emily Strickland <linux@emily.st> |
| * Copyright (c) 2023 Ryan McClelland <rymcclel@gmail.com> |
| * |
| * The following resources/projects were referenced for this driver: |
| * https://github.com/dekuNukem/Nintendo_Switch_Reverse_Engineering |
| * https://gitlab.com/pjranki/joycon-linux-kernel (Peter Rankin) |
| * https://github.com/FrotBot/SwitchProConLinuxUSB |
| * https://github.com/MTCKC/ProconXInput |
| * https://github.com/Davidobot/BetterJoyForCemu |
| * hid-wiimote kernel hid driver |
| * hid-logitech-hidpp driver |
| * hid-sony driver |
| * |
| * This driver supports the Nintendo Switch Joy-Cons and Pro Controllers. The |
| * Pro Controllers can either be used over USB or Bluetooth. |
| * |
| * This driver also incorporates support for Nintendo Switch Online controllers |
| * for the NES, SNES, Sega Genesis, and N64. |
| * |
| * The driver will retrieve the factory calibration info from the controllers, |
| * so little to no user calibration should be required. |
| * |
| */ |
| |
| #include "hid-ids.h" |
| #include <linux/unaligned.h> |
| #include <linux/delay.h> |
| #include <linux/device.h> |
| #include <linux/kernel.h> |
| #include <linux/hid.h> |
| #include <linux/idr.h> |
| #include <linux/input.h> |
| #include <linux/jiffies.h> |
| #include <linux/leds.h> |
| #include <linux/module.h> |
| #include <linux/power_supply.h> |
| #include <linux/spinlock.h> |
| |
| /* |
| * Reference the url below for the following HID report defines: |
| * https://github.com/dekuNukem/Nintendo_Switch_Reverse_Engineering |
| */ |
| |
| /* Output Reports */ |
| #define JC_OUTPUT_RUMBLE_AND_SUBCMD 0x01 |
| #define JC_OUTPUT_FW_UPDATE_PKT 0x03 |
| #define JC_OUTPUT_RUMBLE_ONLY 0x10 |
| #define JC_OUTPUT_MCU_DATA 0x11 |
| #define JC_OUTPUT_USB_CMD 0x80 |
| |
| /* Subcommand IDs */ |
| #define JC_SUBCMD_STATE 0x00 |
| #define JC_SUBCMD_MANUAL_BT_PAIRING 0x01 |
| #define JC_SUBCMD_REQ_DEV_INFO 0x02 |
| #define JC_SUBCMD_SET_REPORT_MODE 0x03 |
| #define JC_SUBCMD_TRIGGERS_ELAPSED 0x04 |
| #define JC_SUBCMD_GET_PAGE_LIST_STATE 0x05 |
| #define JC_SUBCMD_SET_HCI_STATE 0x06 |
| #define JC_SUBCMD_RESET_PAIRING_INFO 0x07 |
| #define JC_SUBCMD_LOW_POWER_MODE 0x08 |
| #define JC_SUBCMD_SPI_FLASH_READ 0x10 |
| #define JC_SUBCMD_SPI_FLASH_WRITE 0x11 |
| #define JC_SUBCMD_RESET_MCU 0x20 |
| #define JC_SUBCMD_SET_MCU_CONFIG 0x21 |
| #define JC_SUBCMD_SET_MCU_STATE 0x22 |
| #define JC_SUBCMD_SET_PLAYER_LIGHTS 0x30 |
| #define JC_SUBCMD_GET_PLAYER_LIGHTS 0x31 |
| #define JC_SUBCMD_SET_HOME_LIGHT 0x38 |
| #define JC_SUBCMD_ENABLE_IMU 0x40 |
| #define JC_SUBCMD_SET_IMU_SENSITIVITY 0x41 |
| #define JC_SUBCMD_WRITE_IMU_REG 0x42 |
| #define JC_SUBCMD_READ_IMU_REG 0x43 |
| #define JC_SUBCMD_ENABLE_VIBRATION 0x48 |
| #define JC_SUBCMD_GET_REGULATED_VOLTAGE 0x50 |
| |
| /* Input Reports */ |
| #define JC_INPUT_BUTTON_EVENT 0x3F |
| #define JC_INPUT_SUBCMD_REPLY 0x21 |
| #define JC_INPUT_IMU_DATA 0x30 |
| #define JC_INPUT_MCU_DATA 0x31 |
| #define JC_INPUT_USB_RESPONSE 0x81 |
| |
| /* Feature Reports */ |
| #define JC_FEATURE_LAST_SUBCMD 0x02 |
| #define JC_FEATURE_OTA_FW_UPGRADE 0x70 |
| #define JC_FEATURE_SETUP_MEM_READ 0x71 |
| #define JC_FEATURE_MEM_READ 0x72 |
| #define JC_FEATURE_ERASE_MEM_SECTOR 0x73 |
| #define JC_FEATURE_MEM_WRITE 0x74 |
| #define JC_FEATURE_LAUNCH 0x75 |
| |
| /* USB Commands */ |
| #define JC_USB_CMD_CONN_STATUS 0x01 |
| #define JC_USB_CMD_HANDSHAKE 0x02 |
| #define JC_USB_CMD_BAUDRATE_3M 0x03 |
| #define JC_USB_CMD_NO_TIMEOUT 0x04 |
| #define JC_USB_CMD_EN_TIMEOUT 0x05 |
| #define JC_USB_RESET 0x06 |
| #define JC_USB_PRE_HANDSHAKE 0x91 |
| #define JC_USB_SEND_UART 0x92 |
| |
| /* Magic value denoting presence of user calibration */ |
| #define JC_CAL_USR_MAGIC_0 0xB2 |
| #define JC_CAL_USR_MAGIC_1 0xA1 |
| #define JC_CAL_USR_MAGIC_SIZE 2 |
| |
| /* SPI storage addresses of user calibration data */ |
| #define JC_CAL_USR_LEFT_MAGIC_ADDR 0x8010 |
| #define JC_CAL_USR_LEFT_DATA_ADDR 0x8012 |
| #define JC_CAL_USR_LEFT_DATA_END 0x801A |
| #define JC_CAL_USR_RIGHT_MAGIC_ADDR 0x801B |
| #define JC_CAL_USR_RIGHT_DATA_ADDR 0x801D |
| #define JC_CAL_STICK_DATA_SIZE \ |
| (JC_CAL_USR_LEFT_DATA_END - JC_CAL_USR_LEFT_DATA_ADDR + 1) |
| |
| /* SPI storage addresses of factory calibration data */ |
| #define JC_CAL_FCT_DATA_LEFT_ADDR 0x603d |
| #define JC_CAL_FCT_DATA_RIGHT_ADDR 0x6046 |
| |
| /* SPI storage addresses of IMU factory calibration data */ |
| #define JC_IMU_CAL_FCT_DATA_ADDR 0x6020 |
| #define JC_IMU_CAL_FCT_DATA_END 0x6037 |
| #define JC_IMU_CAL_DATA_SIZE \ |
| (JC_IMU_CAL_FCT_DATA_END - JC_IMU_CAL_FCT_DATA_ADDR + 1) |
| /* SPI storage addresses of IMU user calibration data */ |
| #define JC_IMU_CAL_USR_MAGIC_ADDR 0x8026 |
| #define JC_IMU_CAL_USR_DATA_ADDR 0x8028 |
| |
| /* The raw analog joystick values will be mapped in terms of this magnitude */ |
| #define JC_MAX_STICK_MAG 32767 |
| #define JC_STICK_FUZZ 250 |
| #define JC_STICK_FLAT 500 |
| |
| /* Hat values for pro controller's d-pad */ |
| #define JC_MAX_DPAD_MAG 1 |
| #define JC_DPAD_FUZZ 0 |
| #define JC_DPAD_FLAT 0 |
| |
| /* Under most circumstances IMU reports are pushed every 15ms; use as default */ |
| #define JC_IMU_DFLT_AVG_DELTA_MS 15 |
| /* How many samples to sum before calculating average IMU report delta */ |
| #define JC_IMU_SAMPLES_PER_DELTA_AVG 300 |
| /* Controls how many dropped IMU packets at once trigger a warning message */ |
| #define JC_IMU_DROPPED_PKT_WARNING 3 |
| |
| /* |
| * The controller's accelerometer has a sensor resolution of 16bits and is |
| * configured with a range of +-8000 milliGs. Therefore, the resolution can be |
| * calculated thus: (2^16-1)/(8000 * 2) = 4.096 digits per milliG |
| * Resolution per G (rather than per millliG): 4.096 * 1000 = 4096 digits per G |
| * Alternatively: 1/4096 = .0002441 Gs per digit |
| */ |
| #define JC_IMU_MAX_ACCEL_MAG 32767 |
| #define JC_IMU_ACCEL_RES_PER_G 4096 |
| #define JC_IMU_ACCEL_FUZZ 10 |
| #define JC_IMU_ACCEL_FLAT 0 |
| |
| /* |
| * The controller's gyroscope has a sensor resolution of 16bits and is |
| * configured with a range of +-2000 degrees/second. |
| * Digits per dps: (2^16 -1)/(2000*2) = 16.38375 |
| * dps per digit: 16.38375E-1 = .0610 |
| * |
| * STMicro recommends in the datasheet to add 15% to the dps/digit. This allows |
| * the full sensitivity range to be saturated without clipping. This yields more |
| * accurate results, so it's the technique this driver uses. |
| * dps per digit (corrected): .0610 * 1.15 = .0702 |
| * digits per dps (corrected): .0702E-1 = 14.247 |
| * |
| * Now, 14.247 truncating to 14 loses a lot of precision, so we rescale the |
| * min/max range by 1000. |
| */ |
| #define JC_IMU_PREC_RANGE_SCALE 1000 |
| /* Note: change mag and res_per_dps if prec_range_scale is ever altered */ |
| #define JC_IMU_MAX_GYRO_MAG 32767000 /* (2^16-1)*1000 */ |
| #define JC_IMU_GYRO_RES_PER_DPS 14247 /* (14.247*1000) */ |
| #define JC_IMU_GYRO_FUZZ 10 |
| #define JC_IMU_GYRO_FLAT 0 |
| |
| /* frequency/amplitude tables for rumble */ |
| struct joycon_rumble_freq_data { |
| u16 high; |
| u8 low; |
| u16 freq; /* Hz*/ |
| }; |
| |
| struct joycon_rumble_amp_data { |
| u8 high; |
| u16 low; |
| u16 amp; |
| }; |
| |
| #if IS_ENABLED(CONFIG_NINTENDO_FF) |
| /* |
| * These tables are from |
| * https://github.com/dekuNukem/Nintendo_Switch_Reverse_Engineering/blob/master/rumble_data_table.md |
| */ |
| static const struct joycon_rumble_freq_data joycon_rumble_frequencies[] = { |
| /* high, low, freq */ |
| { 0x0000, 0x01, 41 }, { 0x0000, 0x02, 42 }, { 0x0000, 0x03, 43 }, |
| { 0x0000, 0x04, 44 }, { 0x0000, 0x05, 45 }, { 0x0000, 0x06, 46 }, |
| { 0x0000, 0x07, 47 }, { 0x0000, 0x08, 48 }, { 0x0000, 0x09, 49 }, |
| { 0x0000, 0x0A, 50 }, { 0x0000, 0x0B, 51 }, { 0x0000, 0x0C, 52 }, |
| { 0x0000, 0x0D, 53 }, { 0x0000, 0x0E, 54 }, { 0x0000, 0x0F, 55 }, |
| { 0x0000, 0x10, 57 }, { 0x0000, 0x11, 58 }, { 0x0000, 0x12, 59 }, |
| { 0x0000, 0x13, 60 }, { 0x0000, 0x14, 62 }, { 0x0000, 0x15, 63 }, |
| { 0x0000, 0x16, 64 }, { 0x0000, 0x17, 66 }, { 0x0000, 0x18, 67 }, |
| { 0x0000, 0x19, 69 }, { 0x0000, 0x1A, 70 }, { 0x0000, 0x1B, 72 }, |
| { 0x0000, 0x1C, 73 }, { 0x0000, 0x1D, 75 }, { 0x0000, 0x1e, 77 }, |
| { 0x0000, 0x1f, 78 }, { 0x0000, 0x20, 80 }, { 0x0400, 0x21, 82 }, |
| { 0x0800, 0x22, 84 }, { 0x0c00, 0x23, 85 }, { 0x1000, 0x24, 87 }, |
| { 0x1400, 0x25, 89 }, { 0x1800, 0x26, 91 }, { 0x1c00, 0x27, 93 }, |
| { 0x2000, 0x28, 95 }, { 0x2400, 0x29, 97 }, { 0x2800, 0x2a, 99 }, |
| { 0x2c00, 0x2b, 102 }, { 0x3000, 0x2c, 104 }, { 0x3400, 0x2d, 106 }, |
| { 0x3800, 0x2e, 108 }, { 0x3c00, 0x2f, 111 }, { 0x4000, 0x30, 113 }, |
| { 0x4400, 0x31, 116 }, { 0x4800, 0x32, 118 }, { 0x4c00, 0x33, 121 }, |
| { 0x5000, 0x34, 123 }, { 0x5400, 0x35, 126 }, { 0x5800, 0x36, 129 }, |
| { 0x5c00, 0x37, 132 }, { 0x6000, 0x38, 135 }, { 0x6400, 0x39, 137 }, |
| { 0x6800, 0x3a, 141 }, { 0x6c00, 0x3b, 144 }, { 0x7000, 0x3c, 147 }, |
| { 0x7400, 0x3d, 150 }, { 0x7800, 0x3e, 153 }, { 0x7c00, 0x3f, 157 }, |
| { 0x8000, 0x40, 160 }, { 0x8400, 0x41, 164 }, { 0x8800, 0x42, 167 }, |
| { 0x8c00, 0x43, 171 }, { 0x9000, 0x44, 174 }, { 0x9400, 0x45, 178 }, |
| { 0x9800, 0x46, 182 }, { 0x9c00, 0x47, 186 }, { 0xa000, 0x48, 190 }, |
| { 0xa400, 0x49, 194 }, { 0xa800, 0x4a, 199 }, { 0xac00, 0x4b, 203 }, |
| { 0xb000, 0x4c, 207 }, { 0xb400, 0x4d, 212 }, { 0xb800, 0x4e, 217 }, |
| { 0xbc00, 0x4f, 221 }, { 0xc000, 0x50, 226 }, { 0xc400, 0x51, 231 }, |
| { 0xc800, 0x52, 236 }, { 0xcc00, 0x53, 241 }, { 0xd000, 0x54, 247 }, |
| { 0xd400, 0x55, 252 }, { 0xd800, 0x56, 258 }, { 0xdc00, 0x57, 263 }, |
| { 0xe000, 0x58, 269 }, { 0xe400, 0x59, 275 }, { 0xe800, 0x5a, 281 }, |
| { 0xec00, 0x5b, 287 }, { 0xf000, 0x5c, 293 }, { 0xf400, 0x5d, 300 }, |
| { 0xf800, 0x5e, 306 }, { 0xfc00, 0x5f, 313 }, { 0x0001, 0x60, 320 }, |
| { 0x0401, 0x61, 327 }, { 0x0801, 0x62, 334 }, { 0x0c01, 0x63, 341 }, |
| { 0x1001, 0x64, 349 }, { 0x1401, 0x65, 357 }, { 0x1801, 0x66, 364 }, |
| { 0x1c01, 0x67, 372 }, { 0x2001, 0x68, 381 }, { 0x2401, 0x69, 389 }, |
| { 0x2801, 0x6a, 397 }, { 0x2c01, 0x6b, 406 }, { 0x3001, 0x6c, 415 }, |
| { 0x3401, 0x6d, 424 }, { 0x3801, 0x6e, 433 }, { 0x3c01, 0x6f, 443 }, |
| { 0x4001, 0x70, 453 }, { 0x4401, 0x71, 462 }, { 0x4801, 0x72, 473 }, |
| { 0x4c01, 0x73, 483 }, { 0x5001, 0x74, 494 }, { 0x5401, 0x75, 504 }, |
| { 0x5801, 0x76, 515 }, { 0x5c01, 0x77, 527 }, { 0x6001, 0x78, 538 }, |
| { 0x6401, 0x79, 550 }, { 0x6801, 0x7a, 562 }, { 0x6c01, 0x7b, 574 }, |
| { 0x7001, 0x7c, 587 }, { 0x7401, 0x7d, 600 }, { 0x7801, 0x7e, 613 }, |
| { 0x7c01, 0x7f, 626 }, { 0x8001, 0x00, 640 }, { 0x8401, 0x00, 654 }, |
| { 0x8801, 0x00, 668 }, { 0x8c01, 0x00, 683 }, { 0x9001, 0x00, 698 }, |
| { 0x9401, 0x00, 713 }, { 0x9801, 0x00, 729 }, { 0x9c01, 0x00, 745 }, |
| { 0xa001, 0x00, 761 }, { 0xa401, 0x00, 778 }, { 0xa801, 0x00, 795 }, |
| { 0xac01, 0x00, 812 }, { 0xb001, 0x00, 830 }, { 0xb401, 0x00, 848 }, |
| { 0xb801, 0x00, 867 }, { 0xbc01, 0x00, 886 }, { 0xc001, 0x00, 905 }, |
| { 0xc401, 0x00, 925 }, { 0xc801, 0x00, 945 }, { 0xcc01, 0x00, 966 }, |
| { 0xd001, 0x00, 987 }, { 0xd401, 0x00, 1009 }, { 0xd801, 0x00, 1031 }, |
| { 0xdc01, 0x00, 1053 }, { 0xe001, 0x00, 1076 }, { 0xe401, 0x00, 1100 }, |
| { 0xe801, 0x00, 1124 }, { 0xec01, 0x00, 1149 }, { 0xf001, 0x00, 1174 }, |
| { 0xf401, 0x00, 1199 }, { 0xf801, 0x00, 1226 }, { 0xfc01, 0x00, 1253 } |
| }; |
| |
| #define joycon_max_rumble_amp (1003) |
| static const struct joycon_rumble_amp_data joycon_rumble_amplitudes[] = { |
| /* high, low, amp */ |
| { 0x00, 0x0040, 0 }, |
| { 0x02, 0x8040, 10 }, { 0x04, 0x0041, 12 }, { 0x06, 0x8041, 14 }, |
| { 0x08, 0x0042, 17 }, { 0x0a, 0x8042, 20 }, { 0x0c, 0x0043, 24 }, |
| { 0x0e, 0x8043, 28 }, { 0x10, 0x0044, 33 }, { 0x12, 0x8044, 40 }, |
| { 0x14, 0x0045, 47 }, { 0x16, 0x8045, 56 }, { 0x18, 0x0046, 67 }, |
| { 0x1a, 0x8046, 80 }, { 0x1c, 0x0047, 95 }, { 0x1e, 0x8047, 112 }, |
| { 0x20, 0x0048, 117 }, { 0x22, 0x8048, 123 }, { 0x24, 0x0049, 128 }, |
| { 0x26, 0x8049, 134 }, { 0x28, 0x004a, 140 }, { 0x2a, 0x804a, 146 }, |
| { 0x2c, 0x004b, 152 }, { 0x2e, 0x804b, 159 }, { 0x30, 0x004c, 166 }, |
| { 0x32, 0x804c, 173 }, { 0x34, 0x004d, 181 }, { 0x36, 0x804d, 189 }, |
| { 0x38, 0x004e, 198 }, { 0x3a, 0x804e, 206 }, { 0x3c, 0x004f, 215 }, |
| { 0x3e, 0x804f, 225 }, { 0x40, 0x0050, 230 }, { 0x42, 0x8050, 235 }, |
| { 0x44, 0x0051, 240 }, { 0x46, 0x8051, 245 }, { 0x48, 0x0052, 251 }, |
| { 0x4a, 0x8052, 256 }, { 0x4c, 0x0053, 262 }, { 0x4e, 0x8053, 268 }, |
| { 0x50, 0x0054, 273 }, { 0x52, 0x8054, 279 }, { 0x54, 0x0055, 286 }, |
| { 0x56, 0x8055, 292 }, { 0x58, 0x0056, 298 }, { 0x5a, 0x8056, 305 }, |
| { 0x5c, 0x0057, 311 }, { 0x5e, 0x8057, 318 }, { 0x60, 0x0058, 325 }, |
| { 0x62, 0x8058, 332 }, { 0x64, 0x0059, 340 }, { 0x66, 0x8059, 347 }, |
| { 0x68, 0x005a, 355 }, { 0x6a, 0x805a, 362 }, { 0x6c, 0x005b, 370 }, |
| { 0x6e, 0x805b, 378 }, { 0x70, 0x005c, 387 }, { 0x72, 0x805c, 395 }, |
| { 0x74, 0x005d, 404 }, { 0x76, 0x805d, 413 }, { 0x78, 0x005e, 422 }, |
| { 0x7a, 0x805e, 431 }, { 0x7c, 0x005f, 440 }, { 0x7e, 0x805f, 450 }, |
| { 0x80, 0x0060, 460 }, { 0x82, 0x8060, 470 }, { 0x84, 0x0061, 480 }, |
| { 0x86, 0x8061, 491 }, { 0x88, 0x0062, 501 }, { 0x8a, 0x8062, 512 }, |
| { 0x8c, 0x0063, 524 }, { 0x8e, 0x8063, 535 }, { 0x90, 0x0064, 547 }, |
| { 0x92, 0x8064, 559 }, { 0x94, 0x0065, 571 }, { 0x96, 0x8065, 584 }, |
| { 0x98, 0x0066, 596 }, { 0x9a, 0x8066, 609 }, { 0x9c, 0x0067, 623 }, |
| { 0x9e, 0x8067, 636 }, { 0xa0, 0x0068, 650 }, { 0xa2, 0x8068, 665 }, |
| { 0xa4, 0x0069, 679 }, { 0xa6, 0x8069, 694 }, { 0xa8, 0x006a, 709 }, |
| { 0xaa, 0x806a, 725 }, { 0xac, 0x006b, 741 }, { 0xae, 0x806b, 757 }, |
| { 0xb0, 0x006c, 773 }, { 0xb2, 0x806c, 790 }, { 0xb4, 0x006d, 808 }, |
| { 0xb6, 0x806d, 825 }, { 0xb8, 0x006e, 843 }, { 0xba, 0x806e, 862 }, |
| { 0xbc, 0x006f, 881 }, { 0xbe, 0x806f, 900 }, { 0xc0, 0x0070, 920 }, |
| { 0xc2, 0x8070, 940 }, { 0xc4, 0x0071, 960 }, { 0xc6, 0x8071, 981 }, |
| { 0xc8, 0x0072, joycon_max_rumble_amp } |
| }; |
| static const u16 JC_RUMBLE_DFLT_LOW_FREQ = 160; |
| static const u16 JC_RUMBLE_DFLT_HIGH_FREQ = 320; |
| static const unsigned short JC_RUMBLE_ZERO_AMP_PKT_CNT = 5; |
| #endif /* IS_ENABLED(CONFIG_NINTENDO_FF) */ |
| static const u16 JC_RUMBLE_PERIOD_MS = 50; |
| |
| /* States for controller state machine */ |
| enum joycon_ctlr_state { |
| JOYCON_CTLR_STATE_INIT, |
| JOYCON_CTLR_STATE_READ, |
| JOYCON_CTLR_STATE_REMOVED, |
| }; |
| |
| /* Controller type received as part of device info */ |
| enum joycon_ctlr_type { |
| JOYCON_CTLR_TYPE_JCL = 0x01, |
| JOYCON_CTLR_TYPE_JCR = 0x02, |
| JOYCON_CTLR_TYPE_PRO = 0x03, |
| JOYCON_CTLR_TYPE_NESL = 0x09, |
| JOYCON_CTLR_TYPE_NESR = 0x0A, |
| JOYCON_CTLR_TYPE_SNES = 0x0B, |
| JOYCON_CTLR_TYPE_GEN = 0x0D, |
| JOYCON_CTLR_TYPE_N64 = 0x0C, |
| }; |
| |
| struct joycon_stick_cal { |
| s32 max; |
| s32 min; |
| s32 center; |
| }; |
| |
| struct joycon_imu_cal { |
| s16 offset[3]; |
| s16 scale[3]; |
| }; |
| |
| /* |
| * All the controller's button values are stored in a u32. |
| * They can be accessed with bitwise ANDs. |
| */ |
| #define JC_BTN_Y BIT(0) |
| #define JC_BTN_X BIT(1) |
| #define JC_BTN_B BIT(2) |
| #define JC_BTN_A BIT(3) |
| #define JC_BTN_SR_R BIT(4) |
| #define JC_BTN_SL_R BIT(5) |
| #define JC_BTN_R BIT(6) |
| #define JC_BTN_ZR BIT(7) |
| #define JC_BTN_MINUS BIT(8) |
| #define JC_BTN_PLUS BIT(9) |
| #define JC_BTN_RSTICK BIT(10) |
| #define JC_BTN_LSTICK BIT(11) |
| #define JC_BTN_HOME BIT(12) |
| #define JC_BTN_CAP BIT(13) /* capture button */ |
| #define JC_BTN_DOWN BIT(16) |
| #define JC_BTN_UP BIT(17) |
| #define JC_BTN_RIGHT BIT(18) |
| #define JC_BTN_LEFT BIT(19) |
| #define JC_BTN_SR_L BIT(20) |
| #define JC_BTN_SL_L BIT(21) |
| #define JC_BTN_L BIT(22) |
| #define JC_BTN_ZL BIT(23) |
| |
| struct joycon_ctlr_button_mapping { |
| u32 code; |
| u32 bit; |
| }; |
| |
| /* |
| * D-pad is configured as buttons for the left Joy-Con only! |
| */ |
| static const struct joycon_ctlr_button_mapping left_joycon_button_mappings[] = { |
| { BTN_TL, JC_BTN_L, }, |
| { BTN_TL2, JC_BTN_ZL, }, |
| { BTN_SELECT, JC_BTN_MINUS, }, |
| { BTN_THUMBL, JC_BTN_LSTICK, }, |
| { BTN_DPAD_UP, JC_BTN_UP, }, |
| { BTN_DPAD_DOWN, JC_BTN_DOWN, }, |
| { BTN_DPAD_LEFT, JC_BTN_LEFT, }, |
| { BTN_DPAD_RIGHT, JC_BTN_RIGHT, }, |
| { BTN_Z, JC_BTN_CAP, }, |
| { /* sentinel */ }, |
| }; |
| |
| /* |
| * The unused *right*-side triggers become the SL/SR triggers for the *left* |
| * Joy-Con, if and only if we're not using a charging grip. |
| */ |
| static const struct joycon_ctlr_button_mapping left_joycon_s_button_mappings[] = { |
| { BTN_TR, JC_BTN_SL_L, }, |
| { BTN_TR2, JC_BTN_SR_L, }, |
| { /* sentinel */ }, |
| }; |
| |
| static const struct joycon_ctlr_button_mapping right_joycon_button_mappings[] = { |
| { BTN_EAST, JC_BTN_A, }, |
| { BTN_SOUTH, JC_BTN_B, }, |
| { BTN_NORTH, JC_BTN_X, }, |
| { BTN_WEST, JC_BTN_Y, }, |
| { BTN_TR, JC_BTN_R, }, |
| { BTN_TR2, JC_BTN_ZR, }, |
| { BTN_START, JC_BTN_PLUS, }, |
| { BTN_THUMBR, JC_BTN_RSTICK, }, |
| { BTN_MODE, JC_BTN_HOME, }, |
| { /* sentinel */ }, |
| }; |
| |
| /* |
| * The unused *left*-side triggers become the SL/SR triggers for the *right* |
| * Joy-Con, if and only if we're not using a charging grip. |
| */ |
| static const struct joycon_ctlr_button_mapping right_joycon_s_button_mappings[] = { |
| { BTN_TL, JC_BTN_SL_R, }, |
| { BTN_TL2, JC_BTN_SR_R, }, |
| { /* sentinel */ }, |
| }; |
| |
| static const struct joycon_ctlr_button_mapping procon_button_mappings[] = { |
| { BTN_EAST, JC_BTN_A, }, |
| { BTN_SOUTH, JC_BTN_B, }, |
| { BTN_NORTH, JC_BTN_X, }, |
| { BTN_WEST, JC_BTN_Y, }, |
| { BTN_TL, JC_BTN_L, }, |
| { BTN_TR, JC_BTN_R, }, |
| { BTN_TL2, JC_BTN_ZL, }, |
| { BTN_TR2, JC_BTN_ZR, }, |
| { BTN_SELECT, JC_BTN_MINUS, }, |
| { BTN_START, JC_BTN_PLUS, }, |
| { BTN_THUMBL, JC_BTN_LSTICK, }, |
| { BTN_THUMBR, JC_BTN_RSTICK, }, |
| { BTN_MODE, JC_BTN_HOME, }, |
| { BTN_Z, JC_BTN_CAP, }, |
| { /* sentinel */ }, |
| }; |
| |
| static const struct joycon_ctlr_button_mapping nescon_button_mappings[] = { |
| { BTN_SOUTH, JC_BTN_A, }, |
| { BTN_EAST, JC_BTN_B, }, |
| { BTN_TL, JC_BTN_L, }, |
| { BTN_TR, JC_BTN_R, }, |
| { BTN_SELECT, JC_BTN_MINUS, }, |
| { BTN_START, JC_BTN_PLUS, }, |
| { /* sentinel */ }, |
| }; |
| |
| static const struct joycon_ctlr_button_mapping snescon_button_mappings[] = { |
| { BTN_EAST, JC_BTN_A, }, |
| { BTN_SOUTH, JC_BTN_B, }, |
| { BTN_NORTH, JC_BTN_X, }, |
| { BTN_WEST, JC_BTN_Y, }, |
| { BTN_TL, JC_BTN_L, }, |
| { BTN_TR, JC_BTN_R, }, |
| { BTN_TL2, JC_BTN_ZL, }, |
| { BTN_TR2, JC_BTN_ZR, }, |
| { BTN_SELECT, JC_BTN_MINUS, }, |
| { BTN_START, JC_BTN_PLUS, }, |
| { /* sentinel */ }, |
| }; |
| |
| /* |
| * "A", "B", and "C" are mapped positionally, rather than by label (e.g., "A" |
| * gets assigned to BTN_EAST instead of BTN_A). |
| */ |
| static const struct joycon_ctlr_button_mapping gencon_button_mappings[] = { |
| { BTN_SOUTH, JC_BTN_A, }, |
| { BTN_EAST, JC_BTN_B, }, |
| { BTN_WEST, JC_BTN_R, }, |
| { BTN_SELECT, JC_BTN_ZR, }, |
| { BTN_START, JC_BTN_PLUS, }, |
| { BTN_MODE, JC_BTN_HOME, }, |
| { BTN_Z, JC_BTN_CAP, }, |
| { /* sentinel */ }, |
| }; |
| |
| /* |
| * N64's C buttons get assigned to d-pad directions and registered as buttons. |
| */ |
| static const struct joycon_ctlr_button_mapping n64con_button_mappings[] = { |
| { BTN_A, JC_BTN_A, }, |
| { BTN_B, JC_BTN_B, }, |
| { BTN_TL2, JC_BTN_ZL, }, /* Z */ |
| { BTN_TL, JC_BTN_L, }, |
| { BTN_TR, JC_BTN_R, }, |
| { BTN_TR2, JC_BTN_LSTICK, }, /* ZR */ |
| { BTN_START, JC_BTN_PLUS, }, |
| { BTN_SELECT, JC_BTN_Y, }, /* C UP */ |
| { BTN_X, JC_BTN_ZR, }, /* C DOWN */ |
| { BTN_Y, JC_BTN_X, }, /* C LEFT */ |
| { BTN_C, JC_BTN_MINUS, }, /* C RIGHT */ |
| { BTN_MODE, JC_BTN_HOME, }, |
| { BTN_Z, JC_BTN_CAP, }, |
| { /* sentinel */ }, |
| }; |
| |
| enum joycon_msg_type { |
| JOYCON_MSG_TYPE_NONE, |
| JOYCON_MSG_TYPE_USB, |
| JOYCON_MSG_TYPE_SUBCMD, |
| }; |
| |
| struct joycon_rumble_output { |
| u8 output_id; |
| u8 packet_num; |
| u8 rumble_data[8]; |
| } __packed; |
| |
| struct joycon_subcmd_request { |
| u8 output_id; /* must be 0x01 for subcommand, 0x10 for rumble only */ |
| u8 packet_num; /* incremented every send */ |
| u8 rumble_data[8]; |
| u8 subcmd_id; |
| u8 data[]; /* length depends on the subcommand */ |
| } __packed; |
| |
| struct joycon_subcmd_reply { |
| u8 ack; /* MSB 1 for ACK, 0 for NACK */ |
| u8 id; /* id of requested subcmd */ |
| u8 data[]; /* will be at most 35 bytes */ |
| } __packed; |
| |
| struct joycon_imu_data { |
| s16 accel_x; |
| s16 accel_y; |
| s16 accel_z; |
| s16 gyro_x; |
| s16 gyro_y; |
| s16 gyro_z; |
| } __packed; |
| |
| struct joycon_input_report { |
| u8 id; |
| u8 timer; |
| u8 bat_con; /* battery and connection info */ |
| u8 button_status[3]; |
| u8 left_stick[3]; |
| u8 right_stick[3]; |
| u8 vibrator_report; |
| |
| union { |
| struct joycon_subcmd_reply subcmd_reply; |
| /* IMU input reports contain 3 samples */ |
| u8 imu_raw_bytes[sizeof(struct joycon_imu_data) * 3]; |
| }; |
| } __packed; |
| |
| #define JC_MAX_RESP_SIZE (sizeof(struct joycon_input_report) + 35) |
| #define JC_RUMBLE_DATA_SIZE 8 |
| #define JC_RUMBLE_QUEUE_SIZE 8 |
| |
| static const char * const joycon_player_led_names[] = { |
| LED_FUNCTION_PLAYER1, |
| LED_FUNCTION_PLAYER2, |
| LED_FUNCTION_PLAYER3, |
| LED_FUNCTION_PLAYER4, |
| }; |
| #define JC_NUM_LEDS ARRAY_SIZE(joycon_player_led_names) |
| #define JC_NUM_LED_PATTERNS 8 |
| /* Taken from https://www.nintendo.com/my/support/qa/detail/33822 */ |
| static const enum led_brightness joycon_player_led_patterns[JC_NUM_LED_PATTERNS][JC_NUM_LEDS] = { |
| { 1, 0, 0, 0 }, |
| { 1, 1, 0, 0 }, |
| { 1, 1, 1, 0 }, |
| { 1, 1, 1, 1 }, |
| { 1, 0, 0, 1 }, |
| { 1, 0, 1, 0 }, |
| { 1, 0, 1, 1 }, |
| { 0, 1, 1, 0 }, |
| }; |
| |
| /* Each physical controller is associated with a joycon_ctlr struct */ |
| struct joycon_ctlr { |
| struct hid_device *hdev; |
| struct input_dev *input; |
| u32 player_id; |
| struct led_classdev leds[JC_NUM_LEDS]; /* player leds */ |
| struct led_classdev home_led; |
| enum joycon_ctlr_state ctlr_state; |
| spinlock_t lock; |
| u8 mac_addr[6]; |
| char *mac_addr_str; |
| enum joycon_ctlr_type ctlr_type; |
| |
| /* The following members are used for synchronous sends/receives */ |
| enum joycon_msg_type msg_type; |
| u8 subcmd_num; |
| struct mutex output_mutex; |
| u8 input_buf[JC_MAX_RESP_SIZE]; |
| wait_queue_head_t wait; |
| bool received_resp; |
| u8 usb_ack_match; |
| u8 subcmd_ack_match; |
| bool received_input_report; |
| unsigned int last_input_report_msecs; |
| unsigned int last_subcmd_sent_msecs; |
| unsigned int consecutive_valid_report_deltas; |
| |
| /* factory calibration data */ |
| struct joycon_stick_cal left_stick_cal_x; |
| struct joycon_stick_cal left_stick_cal_y; |
| struct joycon_stick_cal right_stick_cal_x; |
| struct joycon_stick_cal right_stick_cal_y; |
| |
| struct joycon_imu_cal accel_cal; |
| struct joycon_imu_cal gyro_cal; |
| |
| /* prevents needlessly recalculating these divisors every sample */ |
| s32 imu_cal_accel_divisor[3]; |
| s32 imu_cal_gyro_divisor[3]; |
| |
| /* power supply data */ |
| struct power_supply *battery; |
| struct power_supply_desc battery_desc; |
| u8 battery_capacity; |
| bool battery_charging; |
| bool host_powered; |
| |
| /* rumble */ |
| u8 rumble_data[JC_RUMBLE_QUEUE_SIZE][JC_RUMBLE_DATA_SIZE]; |
| int rumble_queue_head; |
| int rumble_queue_tail; |
| struct workqueue_struct *rumble_queue; |
| struct work_struct rumble_worker; |
| unsigned int rumble_msecs; |
| u16 rumble_ll_freq; |
| u16 rumble_lh_freq; |
| u16 rumble_rl_freq; |
| u16 rumble_rh_freq; |
| unsigned short rumble_zero_countdown; |
| |
| /* imu */ |
| struct input_dev *imu_input; |
| bool imu_first_packet_received; /* helps in initiating timestamp */ |
| unsigned int imu_timestamp_us; /* timestamp we report to userspace */ |
| unsigned int imu_last_pkt_ms; /* used to calc imu report delta */ |
| /* the following are used to track the average imu report time delta */ |
| unsigned int imu_delta_samples_count; |
| unsigned int imu_delta_samples_sum; |
| unsigned int imu_avg_delta_ms; |
| }; |
| |
| /* Helper macros for checking controller type */ |
| #define jc_type_is_joycon(ctlr) \ |
| (ctlr->hdev->product == USB_DEVICE_ID_NINTENDO_JOYCONL || \ |
| ctlr->hdev->product == USB_DEVICE_ID_NINTENDO_JOYCONR || \ |
| ctlr->hdev->product == USB_DEVICE_ID_NINTENDO_CHRGGRIP) |
| #define jc_type_is_procon(ctlr) \ |
| (ctlr->hdev->product == USB_DEVICE_ID_NINTENDO_PROCON) |
| #define jc_type_is_chrggrip(ctlr) \ |
| (ctlr->hdev->product == USB_DEVICE_ID_NINTENDO_CHRGGRIP) |
| |
| /* Does this controller have inputs associated with left joycon? */ |
| #define jc_type_has_left(ctlr) \ |
| (ctlr->ctlr_type == JOYCON_CTLR_TYPE_JCL || \ |
| ctlr->ctlr_type == JOYCON_CTLR_TYPE_PRO || \ |
| ctlr->ctlr_type == JOYCON_CTLR_TYPE_N64) |
| |
| /* Does this controller have inputs associated with right joycon? */ |
| #define jc_type_has_right(ctlr) \ |
| (ctlr->ctlr_type == JOYCON_CTLR_TYPE_JCR || \ |
| ctlr->ctlr_type == JOYCON_CTLR_TYPE_PRO) |
| |
| /* |
| * Controller device helpers |
| * |
| * These look at the device ID known to the HID subsystem to identify a device, |
| * but take caution: some NSO devices lie about themselves (NES Joy-Cons and |
| * Sega Genesis controller). See type helpers below. |
| * |
| * These helpers are most useful early during the HID probe or in conjunction |
| * with the capability helpers below. |
| */ |
| static inline bool joycon_device_is_chrggrip(struct joycon_ctlr *ctlr) |
| { |
| return ctlr->hdev->product == USB_DEVICE_ID_NINTENDO_CHRGGRIP; |
| } |
| |
| /* |
| * Controller type helpers |
| * |
| * These are slightly different than the device-ID-based helpers above. They are |
| * generally more reliable, since they can distinguish between, e.g., Genesis |
| * versus SNES, or NES Joy-Cons versus regular Switch Joy-Cons. They're most |
| * useful for reporting available inputs. For other kinds of distinctions, see |
| * the capability helpers below. |
| * |
| * They have two major drawbacks: (1) they're not available until after we set |
| * the reporting method and then request the device info; (2) they can't |
| * distinguish all controllers (like the Charging Grip from the Pro controller.) |
| */ |
| static inline bool joycon_type_is_left_joycon(struct joycon_ctlr *ctlr) |
| { |
| return ctlr->ctlr_type == JOYCON_CTLR_TYPE_JCL; |
| } |
| |
| static inline bool joycon_type_is_right_joycon(struct joycon_ctlr *ctlr) |
| { |
| return ctlr->ctlr_type == JOYCON_CTLR_TYPE_JCR; |
| } |
| |
| static inline bool joycon_type_is_procon(struct joycon_ctlr *ctlr) |
| { |
| return ctlr->ctlr_type == JOYCON_CTLR_TYPE_PRO; |
| } |
| |
| static inline bool joycon_type_is_snescon(struct joycon_ctlr *ctlr) |
| { |
| return ctlr->ctlr_type == JOYCON_CTLR_TYPE_SNES; |
| } |
| |
| static inline bool joycon_type_is_gencon(struct joycon_ctlr *ctlr) |
| { |
| return ctlr->ctlr_type == JOYCON_CTLR_TYPE_GEN; |
| } |
| |
| static inline bool joycon_type_is_n64con(struct joycon_ctlr *ctlr) |
| { |
| return ctlr->ctlr_type == JOYCON_CTLR_TYPE_N64; |
| } |
| |
| static inline bool joycon_type_is_left_nescon(struct joycon_ctlr *ctlr) |
| { |
| return ctlr->ctlr_type == JOYCON_CTLR_TYPE_NESL; |
| } |
| |
| static inline bool joycon_type_is_right_nescon(struct joycon_ctlr *ctlr) |
| { |
| return ctlr->ctlr_type == JOYCON_CTLR_TYPE_NESR; |
| } |
| |
| static inline bool joycon_type_is_any_joycon(struct joycon_ctlr *ctlr) |
| { |
| return joycon_type_is_left_joycon(ctlr) || |
| joycon_type_is_right_joycon(ctlr) || |
| joycon_device_is_chrggrip(ctlr); |
| } |
| |
| static inline bool joycon_type_is_any_nescon(struct joycon_ctlr *ctlr) |
| { |
| return joycon_type_is_left_nescon(ctlr) || |
| joycon_type_is_right_nescon(ctlr); |
| } |
| |
| /* |
| * Controller capability helpers |
| * |
| * These helpers combine the use of the helpers above to detect certain |
| * capabilities during initialization. They are always accurate but (since they |
| * use type helpers) cannot be used early in the HID probe. |
| */ |
| static inline bool joycon_has_imu(struct joycon_ctlr *ctlr) |
| { |
| return joycon_device_is_chrggrip(ctlr) || |
| joycon_type_is_any_joycon(ctlr) || |
| joycon_type_is_procon(ctlr); |
| } |
| |
| static inline bool joycon_has_joysticks(struct joycon_ctlr *ctlr) |
| { |
| return joycon_device_is_chrggrip(ctlr) || |
| joycon_type_is_any_joycon(ctlr) || |
| joycon_type_is_procon(ctlr) || |
| joycon_type_is_n64con(ctlr); |
| } |
| |
| static inline bool joycon_has_rumble(struct joycon_ctlr *ctlr) |
| { |
| return joycon_device_is_chrggrip(ctlr) || |
| joycon_type_is_any_joycon(ctlr) || |
| joycon_type_is_procon(ctlr) || |
| joycon_type_is_n64con(ctlr); |
| } |
| |
| static inline bool joycon_using_usb(struct joycon_ctlr *ctlr) |
| { |
| return ctlr->hdev->bus == BUS_USB; |
| } |
| |
| static int __joycon_hid_send(struct hid_device *hdev, u8 *data, size_t len) |
| { |
| u8 *buf; |
| int ret; |
| |
| buf = kmemdup(data, len, GFP_KERNEL); |
| if (!buf) |
| return -ENOMEM; |
| ret = hid_hw_output_report(hdev, buf, len); |
| kfree(buf); |
| if (ret < 0) |
| hid_dbg(hdev, "Failed to send output report ret=%d\n", ret); |
| return ret; |
| } |
| |
| static void joycon_wait_for_input_report(struct joycon_ctlr *ctlr) |
| { |
| int ret; |
| |
| /* |
| * If we are in the proper reporting mode, wait for an input |
| * report prior to sending the subcommand. This improves |
| * reliability considerably. |
| */ |
| if (ctlr->ctlr_state == JOYCON_CTLR_STATE_READ) { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&ctlr->lock, flags); |
| ctlr->received_input_report = false; |
| spin_unlock_irqrestore(&ctlr->lock, flags); |
| ret = wait_event_timeout(ctlr->wait, |
| ctlr->received_input_report, |
| HZ / 4); |
| /* We will still proceed, even with a timeout here */ |
| if (!ret) |
| hid_warn(ctlr->hdev, |
| "timeout waiting for input report\n"); |
| } |
| } |
| |
| /* |
| * Sending subcommands and/or rumble data at too high a rate can cause bluetooth |
| * controller disconnections. |
| */ |
| #define JC_INPUT_REPORT_MIN_DELTA 8 |
| #define JC_INPUT_REPORT_MAX_DELTA 17 |
| #define JC_SUBCMD_TX_OFFSET_MS 4 |
| #define JC_SUBCMD_VALID_DELTA_REQ 3 |
| #define JC_SUBCMD_RATE_MAX_ATTEMPTS 500 |
| #define JC_SUBCMD_RATE_LIMITER_USB_MS 20 |
| #define JC_SUBCMD_RATE_LIMITER_BT_MS 60 |
| #define JC_SUBCMD_RATE_LIMITER_MS(ctlr) ((ctlr)->hdev->bus == BUS_USB ? JC_SUBCMD_RATE_LIMITER_USB_MS : JC_SUBCMD_RATE_LIMITER_BT_MS) |
| static void joycon_enforce_subcmd_rate(struct joycon_ctlr *ctlr) |
| { |
| unsigned int current_ms; |
| unsigned long subcmd_delta; |
| int consecutive_valid_deltas = 0; |
| int attempts = 0; |
| unsigned long flags; |
| |
| if (unlikely(ctlr->ctlr_state != JOYCON_CTLR_STATE_READ)) |
| return; |
| |
| do { |
| joycon_wait_for_input_report(ctlr); |
| current_ms = jiffies_to_msecs(jiffies); |
| subcmd_delta = current_ms - ctlr->last_subcmd_sent_msecs; |
| |
| spin_lock_irqsave(&ctlr->lock, flags); |
| consecutive_valid_deltas = ctlr->consecutive_valid_report_deltas; |
| spin_unlock_irqrestore(&ctlr->lock, flags); |
| |
| attempts++; |
| } while ((consecutive_valid_deltas < JC_SUBCMD_VALID_DELTA_REQ || |
| subcmd_delta < JC_SUBCMD_RATE_LIMITER_MS(ctlr)) && |
| ctlr->ctlr_state == JOYCON_CTLR_STATE_READ && |
| attempts < JC_SUBCMD_RATE_MAX_ATTEMPTS); |
| |
| if (attempts >= JC_SUBCMD_RATE_MAX_ATTEMPTS) { |
| hid_warn(ctlr->hdev, "%s: exceeded max attempts", __func__); |
| return; |
| } |
| |
| ctlr->last_subcmd_sent_msecs = current_ms; |
| |
| /* |
| * Wait a short time after receiving an input report before |
| * transmitting. This should reduce odds of a TX coinciding with an RX. |
| * Minimizing concurrent BT traffic with the controller seems to lower |
| * the rate of disconnections. |
| */ |
| msleep(JC_SUBCMD_TX_OFFSET_MS); |
| } |
| |
| static int joycon_hid_send_sync(struct joycon_ctlr *ctlr, u8 *data, size_t len, |
| u32 timeout) |
| { |
| int ret; |
| int tries = 2; |
| |
| /* |
| * The controller occasionally seems to drop subcommands. In testing, |
| * doing one retry after a timeout appears to always work. |
| */ |
| while (tries--) { |
| joycon_enforce_subcmd_rate(ctlr); |
| |
| ret = __joycon_hid_send(ctlr->hdev, data, len); |
| if (ret < 0) { |
| memset(ctlr->input_buf, 0, JC_MAX_RESP_SIZE); |
| return ret; |
| } |
| |
| ret = wait_event_timeout(ctlr->wait, ctlr->received_resp, |
| timeout); |
| if (!ret) { |
| hid_dbg(ctlr->hdev, |
| "synchronous send/receive timed out\n"); |
| if (tries) { |
| hid_dbg(ctlr->hdev, |
| "retrying sync send after timeout\n"); |
| } |
| memset(ctlr->input_buf, 0, JC_MAX_RESP_SIZE); |
| ret = -ETIMEDOUT; |
| } else { |
| ret = 0; |
| break; |
| } |
| } |
| |
| ctlr->received_resp = false; |
| return ret; |
| } |
| |
| static int joycon_send_usb(struct joycon_ctlr *ctlr, u8 cmd, u32 timeout) |
| { |
| int ret; |
| u8 buf[2] = {JC_OUTPUT_USB_CMD}; |
| |
| buf[1] = cmd; |
| ctlr->usb_ack_match = cmd; |
| ctlr->msg_type = JOYCON_MSG_TYPE_USB; |
| ret = joycon_hid_send_sync(ctlr, buf, sizeof(buf), timeout); |
| if (ret) |
| hid_dbg(ctlr->hdev, "send usb command failed; ret=%d\n", ret); |
| return ret; |
| } |
| |
| static int joycon_send_subcmd(struct joycon_ctlr *ctlr, |
| struct joycon_subcmd_request *subcmd, |
| size_t data_len, u32 timeout) |
| { |
| int ret; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&ctlr->lock, flags); |
| /* |
| * If the controller has been removed, just return ENODEV so the LED |
| * subsystem doesn't print invalid errors on removal. |
| */ |
| if (ctlr->ctlr_state == JOYCON_CTLR_STATE_REMOVED) { |
| spin_unlock_irqrestore(&ctlr->lock, flags); |
| return -ENODEV; |
| } |
| memcpy(subcmd->rumble_data, ctlr->rumble_data[ctlr->rumble_queue_tail], |
| JC_RUMBLE_DATA_SIZE); |
| spin_unlock_irqrestore(&ctlr->lock, flags); |
| |
| subcmd->output_id = JC_OUTPUT_RUMBLE_AND_SUBCMD; |
| subcmd->packet_num = ctlr->subcmd_num; |
| if (++ctlr->subcmd_num > 0xF) |
| ctlr->subcmd_num = 0; |
| ctlr->subcmd_ack_match = subcmd->subcmd_id; |
| ctlr->msg_type = JOYCON_MSG_TYPE_SUBCMD; |
| |
| ret = joycon_hid_send_sync(ctlr, (u8 *)subcmd, |
| sizeof(*subcmd) + data_len, timeout); |
| if (ret < 0) |
| hid_dbg(ctlr->hdev, "send subcommand failed; ret=%d\n", ret); |
| else |
| ret = 0; |
| return ret; |
| } |
| |
| /* Supply nibbles for flash and on. Ones correspond to active */ |
| static int joycon_set_player_leds(struct joycon_ctlr *ctlr, u8 flash, u8 on) |
| { |
| struct joycon_subcmd_request *req; |
| u8 buffer[sizeof(*req) + 1] = { 0 }; |
| |
| req = (struct joycon_subcmd_request *)buffer; |
| req->subcmd_id = JC_SUBCMD_SET_PLAYER_LIGHTS; |
| req->data[0] = (flash << 4) | on; |
| |
| hid_dbg(ctlr->hdev, "setting player leds\n"); |
| return joycon_send_subcmd(ctlr, req, 1, HZ/4); |
| } |
| |
| static int joycon_set_home_led(struct joycon_ctlr *ctlr, enum led_brightness brightness) |
| { |
| struct joycon_subcmd_request *req; |
| u8 buffer[sizeof(*req) + 5] = { 0 }; |
| u8 *data; |
| |
| req = (struct joycon_subcmd_request *)buffer; |
| req->subcmd_id = JC_SUBCMD_SET_HOME_LIGHT; |
| data = req->data; |
| data[0] = 0x01; |
| data[1] = brightness << 4; |
| data[2] = brightness | (brightness << 4); |
| data[3] = 0x11; |
| data[4] = 0x11; |
| |
| hid_dbg(ctlr->hdev, "setting home led brightness\n"); |
| return joycon_send_subcmd(ctlr, req, 5, HZ/4); |
| } |
| |
| static int joycon_request_spi_flash_read(struct joycon_ctlr *ctlr, |
| u32 start_addr, u8 size, u8 **reply) |
| { |
| struct joycon_subcmd_request *req; |
| struct joycon_input_report *report; |
| u8 buffer[sizeof(*req) + 5] = { 0 }; |
| u8 *data; |
| int ret; |
| |
| if (!reply) |
| return -EINVAL; |
| |
| req = (struct joycon_subcmd_request *)buffer; |
| req->subcmd_id = JC_SUBCMD_SPI_FLASH_READ; |
| data = req->data; |
| put_unaligned_le32(start_addr, data); |
| data[4] = size; |
| |
| hid_dbg(ctlr->hdev, "requesting SPI flash data\n"); |
| ret = joycon_send_subcmd(ctlr, req, 5, HZ); |
| if (ret) { |
| hid_err(ctlr->hdev, "failed reading SPI flash; ret=%d\n", ret); |
| } else { |
| report = (struct joycon_input_report *)ctlr->input_buf; |
| /* The read data starts at the 6th byte */ |
| *reply = &report->subcmd_reply.data[5]; |
| } |
| return ret; |
| } |
| |
| /* |
| * User calibration's presence is denoted with a magic byte preceding it. |
| * returns 0 if magic val is present, 1 if not present, < 0 on error |
| */ |
| static int joycon_check_for_cal_magic(struct joycon_ctlr *ctlr, u32 flash_addr) |
| { |
| int ret; |
| u8 *reply; |
| |
| ret = joycon_request_spi_flash_read(ctlr, flash_addr, |
| JC_CAL_USR_MAGIC_SIZE, &reply); |
| if (ret) |
| return ret; |
| |
| return reply[0] != JC_CAL_USR_MAGIC_0 || reply[1] != JC_CAL_USR_MAGIC_1; |
| } |
| |
| static int joycon_read_stick_calibration(struct joycon_ctlr *ctlr, u16 cal_addr, |
| struct joycon_stick_cal *cal_x, |
| struct joycon_stick_cal *cal_y, |
| bool left_stick) |
| { |
| s32 x_max_above; |
| s32 x_min_below; |
| s32 y_max_above; |
| s32 y_min_below; |
| u8 *raw_cal; |
| int ret; |
| |
| ret = joycon_request_spi_flash_read(ctlr, cal_addr, |
| JC_CAL_STICK_DATA_SIZE, &raw_cal); |
| if (ret) |
| return ret; |
| |
| /* stick calibration parsing: note the order differs based on stick */ |
| if (left_stick) { |
| x_max_above = hid_field_extract(ctlr->hdev, (raw_cal + 0), 0, |
| 12); |
| y_max_above = hid_field_extract(ctlr->hdev, (raw_cal + 1), 4, |
| 12); |
| cal_x->center = hid_field_extract(ctlr->hdev, (raw_cal + 3), 0, |
| 12); |
| cal_y->center = hid_field_extract(ctlr->hdev, (raw_cal + 4), 4, |
| 12); |
| x_min_below = hid_field_extract(ctlr->hdev, (raw_cal + 6), 0, |
| 12); |
| y_min_below = hid_field_extract(ctlr->hdev, (raw_cal + 7), 4, |
| 12); |
| } else { |
| cal_x->center = hid_field_extract(ctlr->hdev, (raw_cal + 0), 0, |
| 12); |
| cal_y->center = hid_field_extract(ctlr->hdev, (raw_cal + 1), 4, |
| 12); |
| x_min_below = hid_field_extract(ctlr->hdev, (raw_cal + 3), 0, |
| 12); |
| y_min_below = hid_field_extract(ctlr->hdev, (raw_cal + 4), 4, |
| 12); |
| x_max_above = hid_field_extract(ctlr->hdev, (raw_cal + 6), 0, |
| 12); |
| y_max_above = hid_field_extract(ctlr->hdev, (raw_cal + 7), 4, |
| 12); |
| } |
| |
| cal_x->max = cal_x->center + x_max_above; |
| cal_x->min = cal_x->center - x_min_below; |
| cal_y->max = cal_y->center + y_max_above; |
| cal_y->min = cal_y->center - y_min_below; |
| |
| /* check if calibration values are plausible */ |
| if (cal_x->min >= cal_x->center || cal_x->center >= cal_x->max || |
| cal_y->min >= cal_y->center || cal_y->center >= cal_y->max) |
| ret = -EINVAL; |
| |
| return ret; |
| } |
| |
| static const u16 DFLT_STICK_CAL_CEN = 2000; |
| static const u16 DFLT_STICK_CAL_MAX = 3500; |
| static const u16 DFLT_STICK_CAL_MIN = 500; |
| static void joycon_use_default_calibration(struct hid_device *hdev, |
| struct joycon_stick_cal *cal_x, |
| struct joycon_stick_cal *cal_y, |
| const char *stick, int ret) |
| { |
| hid_warn(hdev, |
| "Failed to read %s stick cal, using defaults; e=%d\n", |
| stick, ret); |
| |
| cal_x->center = cal_y->center = DFLT_STICK_CAL_CEN; |
| cal_x->max = cal_y->max = DFLT_STICK_CAL_MAX; |
| cal_x->min = cal_y->min = DFLT_STICK_CAL_MIN; |
| } |
| |
| static int joycon_request_calibration(struct joycon_ctlr *ctlr) |
| { |
| u16 left_stick_addr = JC_CAL_FCT_DATA_LEFT_ADDR; |
| u16 right_stick_addr = JC_CAL_FCT_DATA_RIGHT_ADDR; |
| int ret; |
| |
| hid_dbg(ctlr->hdev, "requesting cal data\n"); |
| |
| /* check if user stick calibrations are present */ |
| if (!joycon_check_for_cal_magic(ctlr, JC_CAL_USR_LEFT_MAGIC_ADDR)) { |
| left_stick_addr = JC_CAL_USR_LEFT_DATA_ADDR; |
| hid_info(ctlr->hdev, "using user cal for left stick\n"); |
| } else { |
| hid_info(ctlr->hdev, "using factory cal for left stick\n"); |
| } |
| if (!joycon_check_for_cal_magic(ctlr, JC_CAL_USR_RIGHT_MAGIC_ADDR)) { |
| right_stick_addr = JC_CAL_USR_RIGHT_DATA_ADDR; |
| hid_info(ctlr->hdev, "using user cal for right stick\n"); |
| } else { |
| hid_info(ctlr->hdev, "using factory cal for right stick\n"); |
| } |
| |
| /* read the left stick calibration data */ |
| ret = joycon_read_stick_calibration(ctlr, left_stick_addr, |
| &ctlr->left_stick_cal_x, |
| &ctlr->left_stick_cal_y, |
| true); |
| |
| if (ret) |
| joycon_use_default_calibration(ctlr->hdev, |
| &ctlr->left_stick_cal_x, |
| &ctlr->left_stick_cal_y, |
| "left", ret); |
| |
| /* read the right stick calibration data */ |
| ret = joycon_read_stick_calibration(ctlr, right_stick_addr, |
| &ctlr->right_stick_cal_x, |
| &ctlr->right_stick_cal_y, |
| false); |
| |
| if (ret) |
| joycon_use_default_calibration(ctlr->hdev, |
| &ctlr->right_stick_cal_x, |
| &ctlr->right_stick_cal_y, |
| "right", ret); |
| |
| hid_dbg(ctlr->hdev, "calibration:\n" |
| "l_x_c=%d l_x_max=%d l_x_min=%d\n" |
| "l_y_c=%d l_y_max=%d l_y_min=%d\n" |
| "r_x_c=%d r_x_max=%d r_x_min=%d\n" |
| "r_y_c=%d r_y_max=%d r_y_min=%d\n", |
| ctlr->left_stick_cal_x.center, |
| ctlr->left_stick_cal_x.max, |
| ctlr->left_stick_cal_x.min, |
| ctlr->left_stick_cal_y.center, |
| ctlr->left_stick_cal_y.max, |
| ctlr->left_stick_cal_y.min, |
| ctlr->right_stick_cal_x.center, |
| ctlr->right_stick_cal_x.max, |
| ctlr->right_stick_cal_x.min, |
| ctlr->right_stick_cal_y.center, |
| ctlr->right_stick_cal_y.max, |
| ctlr->right_stick_cal_y.min); |
| |
| return 0; |
| } |
| |
| /* |
| * These divisors are calculated once rather than for each sample. They are only |
| * dependent on the IMU calibration values. They are used when processing the |
| * IMU input reports. |
| */ |
| static void joycon_calc_imu_cal_divisors(struct joycon_ctlr *ctlr) |
| { |
| int i, divz = 0; |
| |
| for (i = 0; i < 3; i++) { |
| ctlr->imu_cal_accel_divisor[i] = ctlr->accel_cal.scale[i] - |
| ctlr->accel_cal.offset[i]; |
| ctlr->imu_cal_gyro_divisor[i] = ctlr->gyro_cal.scale[i] - |
| ctlr->gyro_cal.offset[i]; |
| |
| if (ctlr->imu_cal_accel_divisor[i] == 0) { |
| ctlr->imu_cal_accel_divisor[i] = 1; |
| divz++; |
| } |
| |
| if (ctlr->imu_cal_gyro_divisor[i] == 0) { |
| ctlr->imu_cal_gyro_divisor[i] = 1; |
| divz++; |
| } |
| } |
| |
| if (divz) |
| hid_warn(ctlr->hdev, "inaccurate IMU divisors (%d)\n", divz); |
| } |
| |
| static const s16 DFLT_ACCEL_OFFSET /*= 0*/; |
| static const s16 DFLT_ACCEL_SCALE = 16384; |
| static const s16 DFLT_GYRO_OFFSET /*= 0*/; |
| static const s16 DFLT_GYRO_SCALE = 13371; |
| static int joycon_request_imu_calibration(struct joycon_ctlr *ctlr) |
| { |
| u16 imu_cal_addr = JC_IMU_CAL_FCT_DATA_ADDR; |
| u8 *raw_cal; |
| int ret; |
| int i; |
| |
| /* check if user calibration exists */ |
| if (!joycon_check_for_cal_magic(ctlr, JC_IMU_CAL_USR_MAGIC_ADDR)) { |
| imu_cal_addr = JC_IMU_CAL_USR_DATA_ADDR; |
| hid_info(ctlr->hdev, "using user cal for IMU\n"); |
| } else { |
| hid_info(ctlr->hdev, "using factory cal for IMU\n"); |
| } |
| |
| /* request IMU calibration data */ |
| hid_dbg(ctlr->hdev, "requesting IMU cal data\n"); |
| ret = joycon_request_spi_flash_read(ctlr, imu_cal_addr, |
| JC_IMU_CAL_DATA_SIZE, &raw_cal); |
| if (ret) { |
| hid_warn(ctlr->hdev, |
| "Failed to read IMU cal, using defaults; ret=%d\n", |
| ret); |
| |
| for (i = 0; i < 3; i++) { |
| ctlr->accel_cal.offset[i] = DFLT_ACCEL_OFFSET; |
| ctlr->accel_cal.scale[i] = DFLT_ACCEL_SCALE; |
| ctlr->gyro_cal.offset[i] = DFLT_GYRO_OFFSET; |
| ctlr->gyro_cal.scale[i] = DFLT_GYRO_SCALE; |
| } |
| joycon_calc_imu_cal_divisors(ctlr); |
| return ret; |
| } |
| |
| /* IMU calibration parsing */ |
| for (i = 0; i < 3; i++) { |
| int j = i * 2; |
| |
| ctlr->accel_cal.offset[i] = get_unaligned_le16(raw_cal + j); |
| ctlr->accel_cal.scale[i] = get_unaligned_le16(raw_cal + j + 6); |
| ctlr->gyro_cal.offset[i] = get_unaligned_le16(raw_cal + j + 12); |
| ctlr->gyro_cal.scale[i] = get_unaligned_le16(raw_cal + j + 18); |
| } |
| |
| joycon_calc_imu_cal_divisors(ctlr); |
| |
| hid_dbg(ctlr->hdev, "IMU calibration:\n" |
| "a_o[0]=%d a_o[1]=%d a_o[2]=%d\n" |
| "a_s[0]=%d a_s[1]=%d a_s[2]=%d\n" |
| "g_o[0]=%d g_o[1]=%d g_o[2]=%d\n" |
| "g_s[0]=%d g_s[1]=%d g_s[2]=%d\n", |
| ctlr->accel_cal.offset[0], |
| ctlr->accel_cal.offset[1], |
| ctlr->accel_cal.offset[2], |
| ctlr->accel_cal.scale[0], |
| ctlr->accel_cal.scale[1], |
| ctlr->accel_cal.scale[2], |
| ctlr->gyro_cal.offset[0], |
| ctlr->gyro_cal.offset[1], |
| ctlr->gyro_cal.offset[2], |
| ctlr->gyro_cal.scale[0], |
| ctlr->gyro_cal.scale[1], |
| ctlr->gyro_cal.scale[2]); |
| |
| return 0; |
| } |
| |
| static int joycon_set_report_mode(struct joycon_ctlr *ctlr) |
| { |
| struct joycon_subcmd_request *req; |
| u8 buffer[sizeof(*req) + 1] = { 0 }; |
| |
| req = (struct joycon_subcmd_request *)buffer; |
| req->subcmd_id = JC_SUBCMD_SET_REPORT_MODE; |
| req->data[0] = 0x30; /* standard, full report mode */ |
| |
| hid_dbg(ctlr->hdev, "setting controller report mode\n"); |
| return joycon_send_subcmd(ctlr, req, 1, HZ); |
| } |
| |
| static int joycon_enable_rumble(struct joycon_ctlr *ctlr) |
| { |
| struct joycon_subcmd_request *req; |
| u8 buffer[sizeof(*req) + 1] = { 0 }; |
| |
| req = (struct joycon_subcmd_request *)buffer; |
| req->subcmd_id = JC_SUBCMD_ENABLE_VIBRATION; |
| req->data[0] = 0x01; /* note: 0x00 would disable */ |
| |
| hid_dbg(ctlr->hdev, "enabling rumble\n"); |
| return joycon_send_subcmd(ctlr, req, 1, HZ/4); |
| } |
| |
| static int joycon_enable_imu(struct joycon_ctlr *ctlr) |
| { |
| struct joycon_subcmd_request *req; |
| u8 buffer[sizeof(*req) + 1] = { 0 }; |
| |
| req = (struct joycon_subcmd_request *)buffer; |
| req->subcmd_id = JC_SUBCMD_ENABLE_IMU; |
| req->data[0] = 0x01; /* note: 0x00 would disable */ |
| |
| hid_dbg(ctlr->hdev, "enabling IMU\n"); |
| return joycon_send_subcmd(ctlr, req, 1, HZ); |
| } |
| |
| 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_input_report_parse_imu_data(struct joycon_ctlr *ctlr, |
| struct joycon_input_report *rep, |
| struct joycon_imu_data *imu_data) |
| { |
| u8 *raw = rep->imu_raw_bytes; |
| int i; |
| |
| for (i = 0; i < 3; i++) { |
| struct joycon_imu_data *data = &imu_data[i]; |
| |
| data->accel_x = get_unaligned_le16(raw + 0); |
| data->accel_y = get_unaligned_le16(raw + 2); |
| data->accel_z = get_unaligned_le16(raw + 4); |
| data->gyro_x = get_unaligned_le16(raw + 6); |
| data->gyro_y = get_unaligned_le16(raw + 8); |
| data->gyro_z = get_unaligned_le16(raw + 10); |
| /* point to next imu sample */ |
| raw += sizeof(struct joycon_imu_data); |
| } |
| } |
| |
| static void joycon_parse_imu_report(struct joycon_ctlr *ctlr, |
| struct joycon_input_report *rep) |
| { |
| struct joycon_imu_data imu_data[3] = {0}; /* 3 reports per packet */ |
| struct input_dev *idev = ctlr->imu_input; |
| unsigned int msecs = jiffies_to_msecs(jiffies); |
| unsigned int last_msecs = ctlr->imu_last_pkt_ms; |
| int i; |
| int value[6]; |
| |
| joycon_input_report_parse_imu_data(ctlr, rep, imu_data); |
| |
| /* |
| * There are complexities surrounding how we determine the timestamps we |
| * associate with the samples we pass to userspace. The IMU input |
| * reports do not provide us with a good timestamp. There's a quickly |
| * incrementing 8-bit counter per input report, but it is not very |
| * useful for this purpose (it is not entirely clear what rate it |
| * increments at or if it varies based on packet push rate - more on |
| * the push rate below...). |
| * |
| * The reverse engineering work done on the joy-cons and pro controllers |
| * by the community seems to indicate the following: |
| * - The controller samples the IMU every 1.35ms. It then does some of |
| * its own processing, probably averaging the samples out. |
| * - Each imu input report contains 3 IMU samples, (usually 5ms apart). |
| * - In the standard reporting mode (which this driver uses exclusively) |
| * input reports are pushed from the controller as follows: |
| * * joy-con (bluetooth): every 15 ms |
| * * joy-cons (in charging grip via USB): every 15 ms |
| * * pro controller (USB): every 15 ms |
| * * pro controller (bluetooth): every 8 ms (this is the wildcard) |
| * |
| * Further complicating matters is that some bluetooth stacks are known |
| * to alter the controller's packet rate by hardcoding the bluetooth |
| * SSR for the switch controllers (android's stack currently sets the |
| * SSR to 11ms for both the joy-cons and pro controllers). |
| * |
| * In my own testing, I've discovered that my pro controller either |
| * reports IMU sample batches every 11ms or every 15ms. This rate is |
| * stable after connecting. It isn't 100% clear what determines this |
| * rate. Importantly, even when sending every 11ms, none of the samples |
| * are duplicates. This seems to indicate that the time deltas between |
| * reported samples can vary based on the input report rate. |
| * |
| * The solution employed in this driver is to keep track of the average |
| * time delta between IMU input reports. In testing, this value has |
| * proven to be stable, staying at 15ms or 11ms, though other hardware |
| * configurations and bluetooth stacks could potentially see other rates |
| * (hopefully this will become more clear as more people use the |
| * driver). |
| * |
| * Keeping track of the average report delta allows us to submit our |
| * timestamps to userspace based on that. Each report contains 3 |
| * samples, so the IMU sampling rate should be avg_time_delta/3. We can |
| * also use this average to detect events where we have dropped a |
| * packet. The userspace timestamp for the samples will be adjusted |
| * accordingly to prevent unwanted behvaior. |
| */ |
| if (!ctlr->imu_first_packet_received) { |
| ctlr->imu_timestamp_us = 0; |
| ctlr->imu_delta_samples_count = 0; |
| ctlr->imu_delta_samples_sum = 0; |
| ctlr->imu_avg_delta_ms = JC_IMU_DFLT_AVG_DELTA_MS; |
| ctlr->imu_first_packet_received = true; |
| } else { |
| unsigned int delta = msecs - last_msecs; |
| unsigned int dropped_pkts; |
| unsigned int dropped_threshold; |
| |
| /* avg imu report delta housekeeping */ |
| ctlr->imu_delta_samples_sum += delta; |
| ctlr->imu_delta_samples_count++; |
| if (ctlr->imu_delta_samples_count >= |
| JC_IMU_SAMPLES_PER_DELTA_AVG) { |
| ctlr->imu_avg_delta_ms = ctlr->imu_delta_samples_sum / |
| ctlr->imu_delta_samples_count; |
| ctlr->imu_delta_samples_count = 0; |
| ctlr->imu_delta_samples_sum = 0; |
| } |
| |
| /* don't ever want divide by zero shenanigans */ |
| if (ctlr->imu_avg_delta_ms == 0) { |
| ctlr->imu_avg_delta_ms = 1; |
| hid_warn(ctlr->hdev, "calculated avg imu delta of 0\n"); |
| } |
| |
| /* useful for debugging IMU sample rate */ |
| hid_dbg(ctlr->hdev, |
| "imu_report: ms=%u last_ms=%u delta=%u avg_delta=%u\n", |
| msecs, last_msecs, delta, ctlr->imu_avg_delta_ms); |
| |
| /* check if any packets have been dropped */ |
| dropped_threshold = ctlr->imu_avg_delta_ms * 3 / 2; |
| dropped_pkts = (delta - min(delta, dropped_threshold)) / |
| ctlr->imu_avg_delta_ms; |
| ctlr->imu_timestamp_us += 1000 * ctlr->imu_avg_delta_ms; |
| if (dropped_pkts > JC_IMU_DROPPED_PKT_WARNING) { |
| hid_warn(ctlr->hdev, |
| "compensating for %u dropped IMU reports\n", |
| dropped_pkts); |
| hid_warn(ctlr->hdev, |
| "delta=%u avg_delta=%u\n", |
| delta, ctlr->imu_avg_delta_ms); |
| } |
| } |
| ctlr->imu_last_pkt_ms = msecs; |
| |
| /* Each IMU input report contains three samples */ |
| for (i = 0; i < 3; i++) { |
| input_event(idev, EV_MSC, MSC_TIMESTAMP, |
| ctlr->imu_timestamp_us); |
| |
| /* |
| * These calculations (which use the controller's calibration |
| * settings to improve the final values) are based on those |
| * found in the community's reverse-engineering repo (linked at |
| * top of driver). For hid-nintendo, we make sure that the final |
| * value given to userspace is always in terms of the axis |
| * resolution we provided. |
| * |
| * Currently only the gyro calculations subtract the calibration |
| * offsets from the raw value itself. In testing, doing the same |
| * for the accelerometer raw values decreased accuracy. |
| * |
| * Note that the gyro values are multiplied by the |
| * precision-saving scaling factor to prevent large inaccuracies |
| * due to truncation of the resolution value which would |
| * otherwise occur. To prevent overflow (without resorting to 64 |
| * bit integer math), the mult_frac macro is used. |
| */ |
| value[0] = mult_frac((JC_IMU_PREC_RANGE_SCALE * |
| (imu_data[i].gyro_x - |
| ctlr->gyro_cal.offset[0])), |
| ctlr->gyro_cal.scale[0], |
| ctlr->imu_cal_gyro_divisor[0]); |
| value[1] = mult_frac((JC_IMU_PREC_RANGE_SCALE * |
| (imu_data[i].gyro_y - |
| ctlr->gyro_cal.offset[1])), |
| ctlr->gyro_cal.scale[1], |
| ctlr->imu_cal_gyro_divisor[1]); |
| value[2] = mult_frac((JC_IMU_PREC_RANGE_SCALE * |
| (imu_data[i].gyro_z - |
| ctlr->gyro_cal.offset[2])), |
| ctlr->gyro_cal.scale[2], |
| ctlr->imu_cal_gyro_divisor[2]); |
| |
| value[3] = ((s32)imu_data[i].accel_x * |
| ctlr->accel_cal.scale[0]) / |
| ctlr->imu_cal_accel_divisor[0]; |
| value[4] = ((s32)imu_data[i].accel_y * |
| ctlr->accel_cal.scale[1]) / |
| ctlr->imu_cal_accel_divisor[1]; |
| value[5] = ((s32)imu_data[i].accel_z * |
| ctlr->accel_cal.scale[2]) / |
| ctlr->imu_cal_accel_divisor[2]; |
| |
| hid_dbg(ctlr->hdev, "raw_gyro: g_x=%d g_y=%d g_z=%d\n", |
| imu_data[i].gyro_x, imu_data[i].gyro_y, |
| imu_data[i].gyro_z); |
| hid_dbg(ctlr->hdev, "raw_accel: a_x=%d a_y=%d a_z=%d\n", |
| imu_data[i].accel_x, imu_data[i].accel_y, |
| imu_data[i].accel_z); |
| |
| /* |
| * The right joy-con has 2 axes negated, Y and Z. This is due to |
| * the orientation of the IMU in the controller. We negate those |
| * axes' values in order to be consistent with the left joy-con |
| * and the pro controller: |
| * X: positive is pointing toward the triggers |
| * Y: positive is pointing to the left |
| * Z: positive is pointing up (out of the buttons/sticks) |
| * The axes follow the right-hand rule. |
| */ |
| if (jc_type_is_joycon(ctlr) && jc_type_has_right(ctlr)) { |
| int j; |
| |
| /* negate all but x axis */ |
| for (j = 1; j < 6; ++j) { |
| if (j == 3) |
| continue; |
| value[j] *= -1; |
| } |
| } |
| |
| input_report_abs(idev, ABS_RX, value[0]); |
| input_report_abs(idev, ABS_RY, value[1]); |
| input_report_abs(idev, ABS_RZ, value[2]); |
| input_report_abs(idev, ABS_X, value[3]); |
| input_report_abs(idev, ABS_Y, value[4]); |
| input_report_abs(idev, ABS_Z, value[5]); |
| input_sync(idev); |
| /* convert to micros and divide by 3 (3 samples per report). */ |
| ctlr->imu_timestamp_us += ctlr->imu_avg_delta_ms * 1000 / 3; |
| } |
| } |
| |
| static void joycon_handle_rumble_report(struct joycon_ctlr *ctlr, struct joycon_input_report *rep) |
| { |
| unsigned long flags; |
| unsigned long msecs = jiffies_to_msecs(jiffies); |
| |
| spin_lock_irqsave(&ctlr->lock, flags); |
| if (IS_ENABLED(CONFIG_NINTENDO_FF) && rep->vibrator_report && |
| ctlr->ctlr_state != JOYCON_CTLR_STATE_REMOVED && |
| (msecs - ctlr->rumble_msecs) >= JC_RUMBLE_PERIOD_MS && |
| (ctlr->rumble_queue_head != ctlr->rumble_queue_tail || |
| ctlr->rumble_zero_countdown > 0)) { |
| /* |
| * When this value reaches 0, we know we've sent multiple |
| * packets to the controller instructing it to disable rumble. |
| * We can safely stop sending periodic rumble packets until the |
| * next ff effect. |
| */ |
| if (ctlr->rumble_zero_countdown > 0) |
| ctlr->rumble_zero_countdown--; |
| queue_work(ctlr->rumble_queue, &ctlr->rumble_worker); |
| } |
| |
| spin_unlock_irqrestore(&ctlr->lock, flags); |
| } |
| |
| static void joycon_parse_battery_status(struct joycon_ctlr *ctlr, struct joycon_input_report *rep) |
| { |
| u8 tmp; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&ctlr->lock, flags); |
| |
| tmp = rep->bat_con; |
| ctlr->host_powered = tmp & BIT(0); |
| ctlr->battery_charging = tmp & BIT(4); |
| tmp = tmp >> 5; |
| |
| switch (tmp) { |
| case 0: /* empty */ |
| ctlr->battery_capacity = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; |
| break; |
| case 1: /* low */ |
| ctlr->battery_capacity = POWER_SUPPLY_CAPACITY_LEVEL_LOW; |
| break; |
| case 2: /* medium */ |
| ctlr->battery_capacity = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; |
| break; |
| case 3: /* high */ |
| ctlr->battery_capacity = POWER_SUPPLY_CAPACITY_LEVEL_HIGH; |
| break; |
| case 4: /* full */ |
| ctlr->battery_capacity = POWER_SUPPLY_CAPACITY_LEVEL_FULL; |
| break; |
| default: |
| ctlr->battery_capacity = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN; |
| hid_warn(ctlr->hdev, "Invalid battery status\n"); |
| break; |
| } |
| |
| spin_unlock_irqrestore(&ctlr->lock, flags); |
| } |
| |
| static void joycon_report_left_stick(struct joycon_ctlr *ctlr, |
| struct joycon_input_report *rep) |
| { |
| u16 raw_x; |
| u16 raw_y; |
| s32 x; |
| s32 y; |
| |
| 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); |
| |
| x = joycon_map_stick_val(&ctlr->left_stick_cal_x, raw_x); |
| y = -joycon_map_stick_val(&ctlr->left_stick_cal_y, raw_y); |
| |
| input_report_abs(ctlr->input, ABS_X, x); |
| input_report_abs(ctlr->input, ABS_Y, y); |
| } |
| |
| static void joycon_report_right_stick(struct joycon_ctlr *ctlr, |
| struct joycon_input_report *rep) |
| { |
| u16 raw_x; |
| u16 raw_y; |
| s32 x; |
| s32 y; |
| |
| 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); |
| |
| x = joycon_map_stick_val(&ctlr->right_stick_cal_x, raw_x); |
| y = -joycon_map_stick_val(&ctlr->right_stick_cal_y, raw_y); |
| |
| input_report_abs(ctlr->input, ABS_RX, x); |
| input_report_abs(ctlr->input, ABS_RY, y); |
| } |
| |
| static void joycon_report_dpad(struct joycon_ctlr *ctlr, |
| struct joycon_input_report *rep) |
| { |
| int hatx = 0; |
| int haty = 0; |
| u32 btns = hid_field_extract(ctlr->hdev, rep->button_status, 0, 24); |
| |
| if (btns & JC_BTN_LEFT) |
| hatx = -1; |
| else if (btns & JC_BTN_RIGHT) |
| hatx = 1; |
| |
| if (btns & JC_BTN_UP) |
| haty = -1; |
| else if (btns & JC_BTN_DOWN) |
| haty = 1; |
| |
| input_report_abs(ctlr->input, ABS_HAT0X, hatx); |
| input_report_abs(ctlr->input, ABS_HAT0Y, haty); |
| } |
| |
| static void joycon_report_buttons(struct joycon_ctlr *ctlr, |
| struct joycon_input_report *rep, |
| const struct joycon_ctlr_button_mapping button_mappings[]) |
| { |
| const struct joycon_ctlr_button_mapping *button; |
| u32 status = hid_field_extract(ctlr->hdev, rep->button_status, 0, 24); |
| |
| for (button = button_mappings; button->code; button++) |
| input_report_key(ctlr->input, button->code, status & button->bit); |
| } |
| |
| static void joycon_parse_report(struct joycon_ctlr *ctlr, |
| struct joycon_input_report *rep) |
| { |
| unsigned long flags; |
| unsigned long msecs = jiffies_to_msecs(jiffies); |
| unsigned long report_delta_ms = msecs - ctlr->last_input_report_msecs; |
| |
| if (joycon_has_rumble(ctlr)) |
| joycon_handle_rumble_report(ctlr, rep); |
| |
| joycon_parse_battery_status(ctlr, rep); |
| |
| if (joycon_type_is_left_joycon(ctlr)) { |
| joycon_report_left_stick(ctlr, rep); |
| joycon_report_buttons(ctlr, rep, left_joycon_button_mappings); |
| if (!joycon_device_is_chrggrip(ctlr)) |
| joycon_report_buttons(ctlr, rep, left_joycon_s_button_mappings); |
| } else if (joycon_type_is_right_joycon(ctlr)) { |
| joycon_report_right_stick(ctlr, rep); |
| joycon_report_buttons(ctlr, rep, right_joycon_button_mappings); |
| if (!joycon_device_is_chrggrip(ctlr)) |
| joycon_report_buttons(ctlr, rep, right_joycon_s_button_mappings); |
| } else if (joycon_type_is_procon(ctlr)) { |
| joycon_report_left_stick(ctlr, rep); |
| joycon_report_right_stick(ctlr, rep); |
| joycon_report_dpad(ctlr, rep); |
| joycon_report_buttons(ctlr, rep, procon_button_mappings); |
| } else if (joycon_type_is_any_nescon(ctlr)) { |
| joycon_report_dpad(ctlr, rep); |
| joycon_report_buttons(ctlr, rep, nescon_button_mappings); |
| } else if (joycon_type_is_snescon(ctlr)) { |
| joycon_report_dpad(ctlr, rep); |
| joycon_report_buttons(ctlr, rep, snescon_button_mappings); |
| } else if (joycon_type_is_gencon(ctlr)) { |
| joycon_report_dpad(ctlr, rep); |
| joycon_report_buttons(ctlr, rep, gencon_button_mappings); |
| } else if (joycon_type_is_n64con(ctlr)) { |
| joycon_report_left_stick(ctlr, rep); |
| joycon_report_dpad(ctlr, rep); |
| joycon_report_buttons(ctlr, rep, n64con_button_mappings); |
| } |
| |
| input_sync(ctlr->input); |
| |
| spin_lock_irqsave(&ctlr->lock, flags); |
| ctlr->last_input_report_msecs = msecs; |
| /* |
| * Was this input report a reasonable time delta compared to the prior |
| * report? We use this information to decide when a safe time is to send |
| * rumble packets or subcommand packets. |
| */ |
| if (report_delta_ms >= JC_INPUT_REPORT_MIN_DELTA && |
| report_delta_ms <= JC_INPUT_REPORT_MAX_DELTA) { |
| if (ctlr->consecutive_valid_report_deltas < JC_SUBCMD_VALID_DELTA_REQ) |
| ctlr->consecutive_valid_report_deltas++; |
| } else { |
| ctlr->consecutive_valid_report_deltas = 0; |
| } |
| /* |
| * Our consecutive valid report tracking is only relevant for |
| * bluetooth-connected controllers. For USB devices, we're beholden to |
| * USB's underlying polling rate anyway. Always set to the consecutive |
| * delta requirement. |
| */ |
| if (ctlr->hdev->bus == BUS_USB) |
| ctlr->consecutive_valid_report_deltas = JC_SUBCMD_VALID_DELTA_REQ; |
| |
| spin_unlock_irqrestore(&ctlr->lock, flags); |
| |
| /* |
| * Immediately after receiving a report is the most reliable time to |
| * send a subcommand to the controller. Wake any subcommand senders |
| * waiting for a report. |
| */ |
| if (unlikely(mutex_is_locked(&ctlr->output_mutex))) { |
| spin_lock_irqsave(&ctlr->lock, flags); |
| ctlr->received_input_report = true; |
| spin_unlock_irqrestore(&ctlr->lock, flags); |
| wake_up(&ctlr->wait); |
| } |
| |
| /* parse IMU data if present */ |
| if ((rep->id == JC_INPUT_IMU_DATA) && joycon_has_imu(ctlr)) |
| joycon_parse_imu_report(ctlr, rep); |
| } |
| |
| static int joycon_send_rumble_data(struct joycon_ctlr *ctlr) |
| { |
| int ret; |
| unsigned long flags; |
| struct joycon_rumble_output rumble_output = { 0 }; |
| |
| spin_lock_irqsave(&ctlr->lock, flags); |
| /* |
| * If the controller has been removed, just return ENODEV so the LED |
| * subsystem doesn't print invalid errors on removal. |
| */ |
| if (ctlr->ctlr_state == JOYCON_CTLR_STATE_REMOVED) { |
| spin_unlock_irqrestore(&ctlr->lock, flags); |
| return -ENODEV; |
| } |
| memcpy(rumble_output.rumble_data, |
| ctlr->rumble_data[ctlr->rumble_queue_tail], |
| JC_RUMBLE_DATA_SIZE); |
| spin_unlock_irqrestore(&ctlr->lock, flags); |
| |
| rumble_output.output_id = JC_OUTPUT_RUMBLE_ONLY; |
| rumble_output.packet_num = ctlr->subcmd_num; |
| if (++ctlr->subcmd_num > 0xF) |
| ctlr->subcmd_num = 0; |
| |
| joycon_enforce_subcmd_rate(ctlr); |
| |
| ret = __joycon_hid_send(ctlr->hdev, (u8 *)&rumble_output, |
| sizeof(rumble_output)); |
| return ret; |
| } |
| |
| static void joycon_rumble_worker(struct work_struct *work) |
| { |
| struct joycon_ctlr *ctlr = container_of(work, struct joycon_ctlr, |
| rumble_worker); |
| unsigned long flags; |
| bool again = true; |
| int ret; |
| |
| while (again) { |
| mutex_lock(&ctlr->output_mutex); |
| ret = joycon_send_rumble_data(ctlr); |
| mutex_unlock(&ctlr->output_mutex); |
| |
| /* -ENODEV means the controller was just unplugged */ |
| spin_lock_irqsave(&ctlr->lock, flags); |
| if (ret < 0 && ret != -ENODEV && |
| ctlr->ctlr_state != JOYCON_CTLR_STATE_REMOVED) |
| hid_warn(ctlr->hdev, "Failed to set rumble; e=%d", ret); |
| |
| ctlr->rumble_msecs = jiffies_to_msecs(jiffies); |
| if (ctlr->rumble_queue_tail != ctlr->rumble_queue_head) { |
| if (++ctlr->rumble_queue_tail >= JC_RUMBLE_QUEUE_SIZE) |
| ctlr->rumble_queue_tail = 0; |
| } else { |
| again = false; |
| } |
| spin_unlock_irqrestore(&ctlr->lock, flags); |
| } |
| } |
| |
| #if IS_ENABLED(CONFIG_NINTENDO_FF) |
| static struct joycon_rumble_freq_data joycon_find_rumble_freq(u16 freq) |
| { |
| const size_t length = ARRAY_SIZE(joycon_rumble_frequencies); |
| const struct joycon_rumble_freq_data *data = joycon_rumble_frequencies; |
| int i = 0; |
| |
| if (freq > data[0].freq) { |
| for (i = 1; i < length - 1; i++) { |
| if (freq > data[i - 1].freq && freq <= data[i].freq) |
| break; |
| } |
| } |
| |
| return data[i]; |
| } |
| |
| static struct joycon_rumble_amp_data joycon_find_rumble_amp(u16 amp) |
| { |
| const size_t length = ARRAY_SIZE(joycon_rumble_amplitudes); |
| const struct joycon_rumble_amp_data *data = joycon_rumble_amplitudes; |
| int i = 0; |
| |
| if (amp > data[0].amp) { |
| for (i = 1; i < length - 1; i++) { |
| if (amp > data[i - 1].amp && amp <= data[i].amp) |
| break; |
| } |
| } |
| |
| return data[i]; |
| } |
| |
| static void joycon_encode_rumble(u8 *data, u16 freq_low, u16 freq_high, u16 amp) |
| { |
| struct joycon_rumble_freq_data freq_data_low; |
| struct joycon_rumble_freq_data freq_data_high; |
| struct joycon_rumble_amp_data amp_data; |
| |
| freq_data_low = joycon_find_rumble_freq(freq_low); |
| freq_data_high = joycon_find_rumble_freq(freq_high); |
| amp_data = joycon_find_rumble_amp(amp); |
| |
| data[0] = (freq_data_high.high >> 8) & 0xFF; |
| data[1] = (freq_data_high.high & 0xFF) + amp_data.high; |
| data[2] = freq_data_low.low + ((amp_data.low >> 8) & 0xFF); |
| data[3] = amp_data.low & 0xFF; |
| } |
| |
| static const u16 JOYCON_MAX_RUMBLE_HIGH_FREQ = 1253; |
| static const u16 JOYCON_MIN_RUMBLE_HIGH_FREQ = 82; |
| static const u16 JOYCON_MAX_RUMBLE_LOW_FREQ = 626; |
| static const u16 JOYCON_MIN_RUMBLE_LOW_FREQ = 41; |
| |
| static void joycon_clamp_rumble_freqs(struct joycon_ctlr *ctlr) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&ctlr->lock, flags); |
| ctlr->rumble_ll_freq = clamp(ctlr->rumble_ll_freq, |
| JOYCON_MIN_RUMBLE_LOW_FREQ, |
| JOYCON_MAX_RUMBLE_LOW_FREQ); |
| ctlr->rumble_lh_freq = clamp(ctlr->rumble_lh_freq, |
| JOYCON_MIN_RUMBLE_HIGH_FREQ, |
| JOYCON_MAX_RUMBLE_HIGH_FREQ); |
| ctlr->rumble_rl_freq = clamp(ctlr->rumble_rl_freq, |
| JOYCON_MIN_RUMBLE_LOW_FREQ, |
| JOYCON_MAX_RUMBLE_LOW_FREQ); |
| ctlr->rumble_rh_freq = clamp(ctlr->rumble_rh_freq, |
| JOYCON_MIN_RUMBLE_HIGH_FREQ, |
| JOYCON_MAX_RUMBLE_HIGH_FREQ); |
| spin_unlock_irqrestore(&ctlr->lock, flags); |
| } |
| |
| static int joycon_set_rumble(struct joycon_ctlr *ctlr, u16 amp_r, u16 amp_l, |
| bool schedule_now) |
| { |
| u8 data[JC_RUMBLE_DATA_SIZE]; |
| u16 amp; |
| u16 freq_r_low; |
| u16 freq_r_high; |
| u16 freq_l_low; |
| u16 freq_l_high; |
| unsigned long flags; |
| int next_rq_head; |
| |
| spin_lock_irqsave(&ctlr->lock, flags); |
| freq_r_low = ctlr->rumble_rl_freq; |
| freq_r_high = ctlr->rumble_rh_freq; |
| freq_l_low = ctlr->rumble_ll_freq; |
| freq_l_high = ctlr->rumble_lh_freq; |
| /* limit number of silent rumble packets to reduce traffic */ |
| if (amp_l != 0 || amp_r != 0) |
| ctlr->rumble_zero_countdown = JC_RUMBLE_ZERO_AMP_PKT_CNT; |
| spin_unlock_irqrestore(&ctlr->lock, flags); |
| |
| /* right joy-con */ |
| amp = amp_r * (u32)joycon_max_rumble_amp / 65535; |
| joycon_encode_rumble(data + 4, freq_r_low, freq_r_high, amp); |
| |
| /* left joy-con */ |
| amp = amp_l * (u32)joycon_max_rumble_amp / 65535; |
| joycon_encode_rumble(data, freq_l_low, freq_l_high, amp); |
| |
| spin_lock_irqsave(&ctlr->lock, flags); |
| |
| next_rq_head = ctlr->rumble_queue_head + 1; |
| if (next_rq_head >= JC_RUMBLE_QUEUE_SIZE) |
| next_rq_head = 0; |
| |
| /* Did we overrun the circular buffer? |
| * If so, be sure we keep the latest intended rumble state. |
| */ |
| if (next_rq_head == ctlr->rumble_queue_tail) { |
| hid_dbg(ctlr->hdev, "rumble queue is full"); |
| /* overwrite the prior value at the end of the circular buf */ |
| next_rq_head = ctlr->rumble_queue_head; |
| } |
| |
| ctlr->rumble_queue_head = next_rq_head; |
| memcpy(ctlr->rumble_data[ctlr->rumble_queue_head], data, |
| JC_RUMBLE_DATA_SIZE); |
| |
| /* don't wait for the periodic send (reduces latency) */ |
| if (schedule_now && ctlr->ctlr_state != JOYCON_CTLR_STATE_REMOVED) |
| queue_work(ctlr->rumble_queue, &ctlr->rumble_worker); |
| |
| spin_unlock_irqrestore(&ctlr->lock, flags); |
| |
| return 0; |
| } |
| |
| static int joycon_play_effect(struct input_dev *dev, void *data, |
| struct ff_effect *effect) |
| { |
| struct joycon_ctlr *ctlr = input_get_drvdata(dev); |
| |
| if (effect->type != FF_RUMBLE) |
| return 0; |
| |
| return joycon_set_rumble(ctlr, |
| effect->u.rumble.weak_magnitude, |
| effect->u.rumble.strong_magnitude, |
| true); |
| } |
| #endif /* IS_ENABLED(CONFIG_NINTENDO_FF) */ |
| |
| static void joycon_config_left_stick(struct input_dev *idev) |
| { |
| input_set_abs_params(idev, |
| ABS_X, |
| -JC_MAX_STICK_MAG, |
| JC_MAX_STICK_MAG, |
| JC_STICK_FUZZ, |
| JC_STICK_FLAT); |
| input_set_abs_params(idev, |
| ABS_Y, |
| -JC_MAX_STICK_MAG, |
| JC_MAX_STICK_MAG, |
| JC_STICK_FUZZ, |
| JC_STICK_FLAT); |
| } |
| |
| static void joycon_config_right_stick(struct input_dev *idev) |
| { |
| input_set_abs_params(idev, |
| ABS_RX, |
| -JC_MAX_STICK_MAG, |
| JC_MAX_STICK_MAG, |
| JC_STICK_FUZZ, |
| JC_STICK_FLAT); |
| input_set_abs_params(idev, |
| ABS_RY, |
| -JC_MAX_STICK_MAG, |
| JC_MAX_STICK_MAG, |
| JC_STICK_FUZZ, |
| JC_STICK_FLAT); |
| } |
| |
| static void joycon_config_dpad(struct input_dev *idev) |
| { |
| input_set_abs_params(idev, |
| ABS_HAT0X, |
| -JC_MAX_DPAD_MAG, |
| JC_MAX_DPAD_MAG, |
| JC_DPAD_FUZZ, |
| JC_DPAD_FLAT); |
| input_set_abs_params(idev, |
| ABS_HAT0Y, |
| -JC_MAX_DPAD_MAG, |
| JC_MAX_DPAD_MAG, |
| JC_DPAD_FUZZ, |
| JC_DPAD_FLAT); |
| } |
| |
| static void joycon_config_buttons(struct input_dev *idev, |
| const struct joycon_ctlr_button_mapping button_mappings[]) |
| { |
| const struct joycon_ctlr_button_mapping *button; |
| |
| for (button = button_mappings; button->code; button++) |
| input_set_capability(idev, EV_KEY, button->code); |
| } |
| |
| static void joycon_config_rumble(struct joycon_ctlr *ctlr) |
| { |
| #if IS_ENABLED(CONFIG_NINTENDO_FF) |
| /* set up rumble */ |
| input_set_capability(ctlr->input, EV_FF, FF_RUMBLE); |
| input_ff_create_memless(ctlr->input, NULL, joycon_play_effect); |
| ctlr->rumble_ll_freq = JC_RUMBLE_DFLT_LOW_FREQ; |
| ctlr->rumble_lh_freq = JC_RUMBLE_DFLT_HIGH_FREQ; |
| ctlr->rumble_rl_freq = JC_RUMBLE_DFLT_LOW_FREQ; |
| ctlr->rumble_rh_freq = JC_RUMBLE_DFLT_HIGH_FREQ; |
| joycon_clamp_rumble_freqs(ctlr); |
| joycon_set_rumble(ctlr, 0, 0, false); |
| ctlr->rumble_msecs = jiffies_to_msecs(jiffies); |
| #endif |
| } |
| |
| static int joycon_imu_input_create(struct joycon_ctlr *ctlr) |
| { |
| struct hid_device *hdev; |
| const char *imu_name; |
| int ret; |
| |
| hdev = ctlr->hdev; |
| |
| /* configure the imu input device */ |
| ctlr->imu_input = devm_input_allocate_device(&hdev->dev); |
| if (!ctlr->imu_input) |
| return -ENOMEM; |
| |
| ctlr->imu_input->id.bustype = hdev->bus; |
| ctlr->imu_input->id.vendor = hdev->vendor; |
| ctlr->imu_input->id.product = hdev->product; |
| ctlr->imu_input->id.version = hdev->version; |
| ctlr->imu_input->uniq = ctlr->mac_addr_str; |
| ctlr->imu_input->phys = hdev->phys; |
| |
| imu_name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "%s (IMU)", ctlr->input->name); |
| if (!imu_name) |
| return -ENOMEM; |
| |
| ctlr->imu_input->name = imu_name; |
| |
| input_set_drvdata(ctlr->imu_input, ctlr); |
| |
| /* configure imu axes */ |
| input_set_abs_params(ctlr->imu_input, ABS_X, |
| -JC_IMU_MAX_ACCEL_MAG, JC_IMU_MAX_ACCEL_MAG, |
| JC_IMU_ACCEL_FUZZ, JC_IMU_ACCEL_FLAT); |
| input_set_abs_params(ctlr->imu_input, ABS_Y, |
| -JC_IMU_MAX_ACCEL_MAG, JC_IMU_MAX_ACCEL_MAG, |
| JC_IMU_ACCEL_FUZZ, JC_IMU_ACCEL_FLAT); |
| input_set_abs_params(ctlr->imu_input, ABS_Z, |
| -JC_IMU_MAX_ACCEL_MAG, JC_IMU_MAX_ACCEL_MAG, |
| JC_IMU_ACCEL_FUZZ, JC_IMU_ACCEL_FLAT); |
| input_abs_set_res(ctlr->imu_input, ABS_X, JC_IMU_ACCEL_RES_PER_G); |
| input_abs_set_res(ctlr->imu_input, ABS_Y, JC_IMU_ACCEL_RES_PER_G); |
| input_abs_set_res(ctlr->imu_input, ABS_Z, JC_IMU_ACCEL_RES_PER_G); |
| |
| input_set_abs_params(ctlr->imu_input, ABS_RX, |
| -JC_IMU_MAX_GYRO_MAG, JC_IMU_MAX_GYRO_MAG, |
| JC_IMU_GYRO_FUZZ, JC_IMU_GYRO_FLAT); |
| input_set_abs_params(ctlr->imu_input, ABS_RY, |
| -JC_IMU_MAX_GYRO_MAG, JC_IMU_MAX_GYRO_MAG, |
| JC_IMU_GYRO_FUZZ, JC_IMU_GYRO_FLAT); |
| input_set_abs_params(ctlr->imu_input, ABS_RZ, |
| -JC_IMU_MAX_GYRO_MAG, JC_IMU_MAX_GYRO_MAG, |
| JC_IMU_GYRO_FUZZ, JC_IMU_GYRO_FLAT); |
| |
| input_abs_set_res(ctlr->imu_input, ABS_RX, JC_IMU_GYRO_RES_PER_DPS); |
| input_abs_set_res(ctlr->imu_input, ABS_RY, JC_IMU_GYRO_RES_PER_DPS); |
| input_abs_set_res(ctlr->imu_input, ABS_RZ, JC_IMU_GYRO_RES_PER_DPS); |
| |
| __set_bit(EV_MSC, ctlr->imu_input->evbit); |
| __set_bit(MSC_TIMESTAMP, ctlr->imu_input->mscbit); |
| __set_bit(INPUT_PROP_ACCELEROMETER, ctlr->imu_input->propbit); |
| |
| ret = input_register_device(ctlr->imu_input); |
| if (ret) |
| return ret; |
| |
| return 0; |
| } |
| |
| static int joycon_input_create(struct joycon_ctlr *ctlr) |
| { |
| struct hid_device *hdev; |
| int ret; |
| |
| hdev = ctlr->hdev; |
| |
| 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->uniq = ctlr->mac_addr_str; |
| ctlr->input->name = hdev->name; |
| ctlr->input->phys = hdev->phys; |
| input_set_drvdata(ctlr->input, ctlr); |
| |
| ret = input_register_device(ctlr->input); |
| if (ret) |
| return ret; |
| |
| if (joycon_type_is_right_joycon(ctlr)) { |
| joycon_config_right_stick(ctlr->input); |
| joycon_config_buttons(ctlr->input, right_joycon_button_mappings); |
| if (!joycon_device_is_chrggrip(ctlr)) |
| joycon_config_buttons(ctlr->input, right_joycon_s_button_mappings); |
| } else if (joycon_type_is_left_joycon(ctlr)) { |
| joycon_config_left_stick(ctlr->input); |
| joycon_config_buttons(ctlr->input, left_joycon_button_mappings); |
| if (!joycon_device_is_chrggrip(ctlr)) |
| joycon_config_buttons(ctlr->input, left_joycon_s_button_mappings); |
| } else if (joycon_type_is_procon(ctlr)) { |
| joycon_config_left_stick(ctlr->input); |
| joycon_config_right_stick(ctlr->input); |
| joycon_config_dpad(ctlr->input); |
| joycon_config_buttons(ctlr->input, procon_button_mappings); |
| } else if (joycon_type_is_any_nescon(ctlr)) { |
| joycon_config_dpad(ctlr->input); |
| joycon_config_buttons(ctlr->input, nescon_button_mappings); |
| } else if (joycon_type_is_snescon(ctlr)) { |
| joycon_config_dpad(ctlr->input); |
| joycon_config_buttons(ctlr->input, snescon_button_mappings); |
| } else if (joycon_type_is_gencon(ctlr)) { |
| joycon_config_dpad(ctlr->input); |
| joycon_config_buttons(ctlr->input, gencon_button_mappings); |
| } else if (joycon_type_is_n64con(ctlr)) { |
| joycon_config_dpad(ctlr->input); |
| joycon_config_left_stick(ctlr->input); |
| joycon_config_buttons(ctlr->input, n64con_button_mappings); |
| } |
| |
| if (joycon_has_imu(ctlr)) { |
| ret = joycon_imu_input_create(ctlr); |
| if (ret) |
| return ret; |
| } |
| |
| if (joycon_has_rumble(ctlr)) |
| joycon_config_rumble(ctlr); |
| |
| return 0; |
| } |
| |
| /* Because the subcommand sets all the leds at once, the brightness argument is ignored */ |
| static int joycon_player_led_brightness_set(struct led_classdev *led, |
| enum led_brightness brightness) |
| { |
| struct device *dev = led->dev->parent; |
| struct hid_device *hdev = to_hid_device(dev); |
| struct joycon_ctlr *ctlr; |
| int val = 0; |
| int i; |
| int ret; |
| |
| ctlr = hid_get_drvdata(hdev); |
| if (!ctlr) { |
| hid_err(hdev, "No controller data\n"); |
| return -ENODEV; |
| } |
| |
| for (i = 0; i < JC_NUM_LEDS; i++) |
| val |= ctlr->leds[i].brightness << i; |
| |
| mutex_lock(&ctlr->output_mutex); |
| ret = joycon_set_player_leds(ctlr, 0, val); |
| mutex_unlock(&ctlr->output_mutex); |
| |
| return ret; |
| } |
| |
| static int joycon_home_led_brightness_set(struct led_classdev *led, |
| enum led_brightness brightness) |
| { |
| struct device *dev = led->dev->parent; |
| struct hid_device *hdev = to_hid_device(dev); |
| struct joycon_ctlr *ctlr; |
| int ret; |
| |
| ctlr = hid_get_drvdata(hdev); |
| if (!ctlr) { |
| hid_err(hdev, "No controller data\n"); |
| return -ENODEV; |
| } |
| mutex_lock(&ctlr->output_mutex); |
| ret = joycon_set_home_led(ctlr, brightness); |
| mutex_unlock(&ctlr->output_mutex); |
| return ret; |
| } |
| |
| static DEFINE_IDA(nintendo_player_id_allocator); |
| |
| static int joycon_leds_create(struct joycon_ctlr *ctlr) |
| { |
| struct hid_device *hdev = ctlr->hdev; |
| struct device *dev = &hdev->dev; |
| const char *d_name = dev_name(dev); |
| struct led_classdev *led; |
| int led_val = 0; |
| char *name; |
| int ret; |
| int i; |
| int player_led_pattern; |
| |
| /* configure the player LEDs */ |
| ctlr->player_id = U32_MAX; |
| ret = ida_alloc(&nintendo_player_id_allocator, GFP_KERNEL); |
| if (ret < 0) { |
| hid_warn(hdev, "Failed to allocate player ID, skipping; ret=%d\n", ret); |
| goto home_led; |
| } |
| ctlr->player_id = ret; |
| player_led_pattern = ret % JC_NUM_LED_PATTERNS; |
| hid_info(ctlr->hdev, "assigned player %d led pattern", player_led_pattern + 1); |
| |
| for (i = 0; i < JC_NUM_LEDS; i++) { |
| name = devm_kasprintf(dev, GFP_KERNEL, "%s:%s:%s", |
| d_name, |
| "green", |
| joycon_player_led_names[i]); |
| if (!name) |
| return -ENOMEM; |
| |
| led = &ctlr->leds[i]; |
| led->name = name; |
| led->brightness = joycon_player_led_patterns[player_led_pattern][i]; |
| led->max_brightness = 1; |
| led->brightness_set_blocking = |
| joycon_player_led_brightness_set; |
| led->flags = LED_CORE_SUSPENDRESUME | LED_HW_PLUGGABLE; |
| |
| led_val |= joycon_player_led_patterns[player_led_pattern][i] << i; |
| } |
| mutex_lock(&ctlr->output_mutex); |
| ret = joycon_set_player_leds(ctlr, 0, led_val); |
| mutex_unlock(&ctlr->output_mutex); |
| if (ret) { |
| hid_warn(hdev, "Failed to set players LEDs, skipping registration; ret=%d\n", ret); |
| goto home_led; |
| } |
| |
| for (i = 0; i < JC_NUM_LEDS; i++) { |
| led = &ctlr->leds[i]; |
| ret = devm_led_classdev_register(&hdev->dev, led); |
| if (ret) { |
| hid_err(hdev, "Failed to register player %d LED; ret=%d\n", i + 1, ret); |
| return ret; |
| } |
| } |
| |
| home_led: |
| /* configure the home LED */ |
| if (jc_type_has_right(ctlr)) { |
| name = devm_kasprintf(dev, GFP_KERNEL, "%s:%s:%s", |
| d_name, |
| "blue", |
| LED_FUNCTION_PLAYER5); |
| if (!name) |
| return -ENOMEM; |
| |
| led = &ctlr->home_led; |
| led->name = name; |
| led->brightness = 0; |
| led->max_brightness = 0xF; |
| led->brightness_set_blocking = joycon_home_led_brightness_set; |
| led->flags = LED_CORE_SUSPENDRESUME | LED_HW_PLUGGABLE; |
| |
| /* Set the home LED to 0 as default state */ |
| mutex_lock(&ctlr->output_mutex); |
| ret = joycon_set_home_led(ctlr, 0); |
| mutex_unlock(&ctlr->output_mutex); |
| if (ret) { |
| hid_warn(hdev, "Failed to set home LED, skipping registration; ret=%d\n", ret); |
| return 0; |
| } |
| |
| ret = devm_led_classdev_register(&hdev->dev, led); |
| if (ret) { |
| hid_err(hdev, "Failed to register home LED; ret=%d\n", ret); |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int joycon_battery_get_property(struct power_supply *supply, |
| enum power_supply_property prop, |
| union power_supply_propval *val) |
| { |
| struct joycon_ctlr *ctlr = power_supply_get_drvdata(supply); |
| unsigned long flags; |
| int ret = 0; |
| u8 capacity; |
| bool charging; |
| bool powered; |
| |
| spin_lock_irqsave(&ctlr->lock, flags); |
| capacity = ctlr->battery_capacity; |
| charging = ctlr->battery_charging; |
| powered = ctlr->host_powered; |
| spin_unlock_irqrestore(&ctlr->lock, flags); |
| |
| switch (prop) { |
| case POWER_SUPPLY_PROP_PRESENT: |
| val->intval = 1; |
| break; |
| case POWER_SUPPLY_PROP_SCOPE: |
| val->intval = POWER_SUPPLY_SCOPE_DEVICE; |
| break; |
| case POWER_SUPPLY_PROP_CAPACITY_LEVEL: |
| val->intval = capacity; |
| break; |
| case POWER_SUPPLY_PROP_STATUS: |
| if (charging) |
| val->intval = POWER_SUPPLY_STATUS_CHARGING; |
| else if (capacity == POWER_SUPPLY_CAPACITY_LEVEL_FULL && |
| powered) |
| val->intval = POWER_SUPPLY_STATUS_FULL; |
| else |
| val->intval = POWER_SUPPLY_STATUS_DISCHARGING; |
| break; |
| default: |
| ret = -EINVAL; |
| break; |
| } |
| return ret; |
| } |
| |
| static enum power_supply_property joycon_battery_props[] = { |
| POWER_SUPPLY_PROP_PRESENT, |
| POWER_SUPPLY_PROP_CAPACITY_LEVEL, |
| POWER_SUPPLY_PROP_SCOPE, |
| POWER_SUPPLY_PROP_STATUS, |
| }; |
| |
| static int joycon_power_supply_create(struct joycon_ctlr *ctlr) |
| { |
| struct hid_device *hdev = ctlr->hdev; |
| struct power_supply_config supply_config = { .drv_data = ctlr, }; |
| const char * const name_fmt = "nintendo_switch_controller_battery_%s"; |
| int ret = 0; |
| |
| /* Set initially to unknown before receiving first input report */ |
| ctlr->battery_capacity = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN; |
| |
| /* Configure the battery's description */ |
| ctlr->battery_desc.properties = joycon_battery_props; |
| ctlr->battery_desc.num_properties = |
| ARRAY_SIZE(joycon_battery_props); |
| ctlr->battery_desc.get_property = joycon_battery_get_property; |
| ctlr->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY; |
| ctlr->battery_desc.use_for_apm = 0; |
| ctlr->battery_desc.name = devm_kasprintf(&hdev->dev, GFP_KERNEL, |
| name_fmt, |
| dev_name(&hdev->dev)); |
| if (!ctlr->battery_desc.name) |
| return -ENOMEM; |
| |
| ctlr->battery = devm_power_supply_register(&hdev->dev, |
| &ctlr->battery_desc, |
| &supply_config); |
| if (IS_ERR(ctlr->battery)) { |
| ret = PTR_ERR(ctlr->battery); |
| hid_err(hdev, "Failed to register battery; ret=%d\n", ret); |
| return ret; |
| } |
| |
| return power_supply_powers(ctlr->battery, &hdev->dev); |
| } |
| |
| static int joycon_read_info(struct joycon_ctlr *ctlr) |
| { |
| int ret; |
| int i; |
| int j; |
| struct joycon_subcmd_request req = { 0 }; |
| struct joycon_input_report *report; |
| |
| req.subcmd_id = JC_SUBCMD_REQ_DEV_INFO; |
| ret = joycon_send_subcmd(ctlr, &req, 0, HZ); |
| if (ret) { |
| hid_err(ctlr->hdev, "Failed to get joycon info; ret=%d\n", ret); |
| return ret; |
| } |
| |
| report = (struct joycon_input_report *)ctlr->input_buf; |
| |
| for (i = 4, j = 0; j < 6; i++, j++) |
| ctlr->mac_addr[j] = report->subcmd_reply.data[i]; |
| |
| ctlr->mac_addr_str = devm_kasprintf(&ctlr->hdev->dev, GFP_KERNEL, |
| "%02X:%02X:%02X:%02X:%02X:%02X", |
| ctlr->mac_addr[0], |
| ctlr->mac_addr[1], |
| ctlr->mac_addr[2], |
| ctlr->mac_addr[3], |
| ctlr->mac_addr[4], |
| ctlr->mac_addr[5]); |
| if (!ctlr->mac_addr_str) |
| return -ENOMEM; |
| hid_info(ctlr->hdev, "controller MAC = %s\n", ctlr->mac_addr_str); |
| |
| /* |
| * Retrieve the type so we can distinguish the controller type |
| * Unfortantly the hdev->product can't always be used due to a ?bug? |
| * with the NSO Genesis controller. Over USB, it will report the |
| * PID as 0x201E, but over bluetooth it will report the PID as 0x2017 |
| * which is the same as the NSO SNES controller. This is different from |
| * the rest of the controllers which will report the same PID over USB |
| * and bluetooth. |
| */ |
| ctlr->ctlr_type = report->subcmd_reply.data[2]; |
| hid_dbg(ctlr->hdev, "controller type = 0x%02X\n", ctlr->ctlr_type); |
| |
| return 0; |
| } |
| |
| static int joycon_init(struct hid_device *hdev) |
| { |
| struct joycon_ctlr *ctlr = hid_get_drvdata(hdev); |
| int ret = 0; |
| |
| mutex_lock(&ctlr->output_mutex); |
| /* if handshake command fails, assume ble pro controller */ |
| if (joycon_using_usb(ctlr) && !joycon_send_usb(ctlr, JC_USB_CMD_HANDSHAKE, HZ)) { |
| hid_dbg(hdev, "detected USB controller\n"); |
| /* set baudrate for improved latency */ |
| ret = joycon_send_usb(ctlr, JC_USB_CMD_BAUDRATE_3M, HZ); |
| if (ret) { |
| /* |
| * We can function with the default baudrate. |
| * Provide a warning, and continue on. |
| */ |
| hid_warn(hdev, "Failed to set baudrate (ret=%d), continuing anyway\n", ret); |
| } |
| /* handshake */ |
| ret = joycon_send_usb(ctlr, JC_USB_CMD_HANDSHAKE, HZ); |
| if (ret) { |
| hid_err(hdev, "Failed handshake; ret=%d\n", ret); |
| goto out_unlock; |
| } |
| /* |
| * 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, HZ/10); |
| } else if (jc_type_is_chrggrip(ctlr)) { |
| hid_err(hdev, "Failed charging grip handshake\n"); |
| ret = -ETIMEDOUT; |
| goto out_unlock; |
| } |
| |
| /* needed to retrieve the controller type */ |
| ret = joycon_read_info(ctlr); |
| if (ret) { |
| hid_err(hdev, "Failed to retrieve controller info; ret=%d\n", |
| ret); |
| goto out_unlock; |
| } |
| |
| if (joycon_has_joysticks(ctlr)) { |
| /* 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"); |
| } |
| } |
| |
| if (joycon_has_imu(ctlr)) { |
| /* get IMU calibration data, and parse it */ |
| ret = joycon_request_imu_calibration(ctlr); |
| if (ret) { |
| /* |
| * We can function with default calibration, but it may be |
| * inaccurate. Provide a warning, and continue on. |
| */ |
| hid_warn(hdev, "Unable to read IMU calibration data\n"); |
| } |
| |
| /* Enable the IMU */ |
| ret = joycon_enable_imu(ctlr); |
| if (ret) { |
| hid_err(hdev, "Failed to enable the IMU; ret=%d\n", ret); |
| goto out_unlock; |
| } |
| } |
| |
| /* 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 out_unlock; |
| } |
| |
| if (joycon_has_rumble(ctlr)) { |
| /* Enable rumble */ |
| ret = joycon_enable_rumble(ctlr); |
| if (ret) { |
| hid_err(hdev, "Failed to enable rumble; ret=%d\n", ret); |
| goto out_unlock; |
| } |
| } |
| |
| out_unlock: |
| mutex_unlock(&ctlr->output_mutex); |
| return ret; |
| } |
| |
| /* Common handler for parsing inputs */ |
| static int joycon_ctlr_read_handler(struct joycon_ctlr *ctlr, u8 *data, |
| int size) |
| { |
| 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 0; |
| } |
| |
| 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->subcmd_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; |
| ctlr->rumble_queue_head = 0; |
| ctlr->rumble_queue_tail = 0; |
| hid_set_drvdata(hdev, ctlr); |
| mutex_init(&ctlr->output_mutex); |
| init_waitqueue_head(&ctlr->wait); |
| spin_lock_init(&ctlr->lock); |
| ctlr->rumble_queue = alloc_workqueue("hid-nintendo-rumble_wq", |
| WQ_FREEZABLE | WQ_MEM_RECLAIM, 0); |
| if (!ctlr->rumble_queue) { |
| ret = -ENOMEM; |
| goto err; |
| } |
| INIT_WORK(&ctlr->rumble_worker, joycon_rumble_worker); |
| |
| ret = hid_parse(hdev); |
| if (ret) { |
| hid_err(hdev, "HID parse failed\n"); |
| goto err_wq; |
| } |
| |
| /* |
| * Patch the hw version of pro controller/joycons, so applications can |
| * distinguish between the default HID mappings and the mappings defined |
| * by the Linux game controller spec. This is important for the SDL2 |
| * library, which has a game controller database, which uses device ids |
| * in combination with version as a key. |
| */ |
| hdev->version |= 0x8000; |
| |
| ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW); |
| if (ret) { |
| hid_err(hdev, "HW start failed\n"); |
| goto err_wq; |
| } |
| |
| ret = hid_hw_open(hdev); |
| if (ret) { |
| hid_err(hdev, "cannot start hardware I/O\n"); |
| goto err_stop; |
| } |
| |
| hid_device_io_start(hdev); |
| |
| ret = joycon_init(hdev); |
| if (ret) { |
| hid_err(hdev, "Failed to initialize controller; ret=%d\n", ret); |
| goto err_close; |
| } |
| |
| /* Initialize the leds */ |
| ret = joycon_leds_create(ctlr); |
| if (ret) { |
| hid_err(hdev, "Failed to create leds; ret=%d\n", ret); |
| goto err_close; |
| } |
| |
| /* Initialize the battery power supply */ |
| ret = joycon_power_supply_create(ctlr); |
| if (ret) { |
| hid_err(hdev, "Failed to create power_supply; ret=%d\n", ret); |
| goto err_ida; |
| } |
| |
| ret = joycon_input_create(ctlr); |
| if (ret) { |
| hid_err(hdev, "Failed to create input device; ret=%d\n", ret); |
| goto err_ida; |
| } |
| |
| ctlr->ctlr_state = JOYCON_CTLR_STATE_READ; |
| |
| hid_dbg(hdev, "probe - success\n"); |
| return 0; |
| |
| err_ida: |
| ida_free(&nintendo_player_id_allocator, ctlr->player_id); |
| err_close: |
| hid_hw_close(hdev); |
| err_stop: |
| hid_hw_stop(hdev); |
| err_wq: |
| destroy_workqueue(ctlr->rumble_queue); |
| err: |
| hid_err(hdev, "probe - fail = %d\n", ret); |
| return ret; |
| } |
| |
| static void nintendo_hid_remove(struct hid_device *hdev) |
| { |
| struct joycon_ctlr *ctlr = hid_get_drvdata(hdev); |
| unsigned long flags; |
| |
| hid_dbg(hdev, "remove\n"); |
| |
| /* Prevent further attempts at sending subcommands. */ |
| spin_lock_irqsave(&ctlr->lock, flags); |
| ctlr->ctlr_state = JOYCON_CTLR_STATE_REMOVED; |
| spin_unlock_irqrestore(&ctlr->lock, flags); |
| |
| destroy_workqueue(ctlr->rumble_queue); |
| ida_free(&nintendo_player_id_allocator, ctlr->player_id); |
| |
| hid_hw_close(hdev); |
| hid_hw_stop(hdev); |
| } |
| |
| #ifdef CONFIG_PM |
| |
| static int nintendo_hid_resume(struct hid_device *hdev) |
| { |
| int ret = joycon_init(hdev); |
| |
| if (ret) |
| hid_err(hdev, "Failed to restore controller after resume"); |
| |
| return ret; |
| } |
| |
| #endif |
| |
| static const struct hid_device_id nintendo_hid_devices[] = { |
| { HID_USB_DEVICE(USB_VENDOR_ID_NINTENDO, |
| USB_DEVICE_ID_NINTENDO_PROCON) }, |
| { HID_USB_DEVICE(USB_VENDOR_ID_NINTENDO, |
| USB_DEVICE_ID_NINTENDO_SNESCON) }, |
| { HID_USB_DEVICE(USB_VENDOR_ID_NINTENDO, |
| USB_DEVICE_ID_NINTENDO_GENCON) }, |
| { HID_USB_DEVICE(USB_VENDOR_ID_NINTENDO, |
| USB_DEVICE_ID_NINTENDO_N64CON) }, |
| { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, |
| USB_DEVICE_ID_NINTENDO_PROCON) }, |
| { HID_USB_DEVICE(USB_VENDOR_ID_NINTENDO, |
| USB_DEVICE_ID_NINTENDO_CHRGGRIP) }, |
| { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, |
| USB_DEVICE_ID_NINTENDO_JOYCONL) }, |
| { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, |
| USB_DEVICE_ID_NINTENDO_JOYCONR) }, |
| { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, |
| USB_DEVICE_ID_NINTENDO_SNESCON) }, |
| { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, |
| USB_DEVICE_ID_NINTENDO_GENCON) }, |
| { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, |
| USB_DEVICE_ID_NINTENDO_N64CON) }, |
| { } |
| }; |
| 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, |
| |
| #ifdef CONFIG_PM |
| .resume = nintendo_hid_resume, |
| #endif |
| }; |
| static int __init nintendo_init(void) |
| { |
| return hid_register_driver(&nintendo_hid_driver); |
| } |
| |
| static void __exit nintendo_exit(void) |
| { |
| hid_unregister_driver(&nintendo_hid_driver); |
| ida_destroy(&nintendo_player_id_allocator); |
| } |
| |
| module_init(nintendo_init); |
| module_exit(nintendo_exit); |
| |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Ryan McClelland <rymcclel@gmail.com>"); |
| MODULE_AUTHOR("Emily Strickland <linux@emily.st>"); |
| MODULE_AUTHOR("Daniel J. Ogorchock <djogorchock@gmail.com>"); |
| MODULE_DESCRIPTION("Driver for Nintendo Switch Controllers"); |