// SPDX-License-Identifier: GPL-2.0-or-later /* * Force feedback support for Logitech Gaming Wheels * * Including G27, G25, DFP, DFGT, FFEX, Momo, Momo2 & * Speed Force Wireless (WiiWheel) * * Copyright (c) 2010 Simon Wood <[email protected]> */ /* */ #include <linux/input.h> #include <linux/usb.h> #include <linux/hid.h> #include "usbhid/usbhid.h" #include "hid-lg.h" #include "hid-lg4ff.h" #include "hid-ids.h" #define LG4FF_MMODE_IS_MULTIMODE … #define LG4FF_MMODE_SWITCHED … #define LG4FF_MMODE_NOT_MULTIMODE … #define LG4FF_MODE_NATIVE_IDX … #define LG4FF_MODE_DFEX_IDX … #define LG4FF_MODE_DFP_IDX … #define LG4FF_MODE_G25_IDX … #define LG4FF_MODE_DFGT_IDX … #define LG4FF_MODE_G27_IDX … #define LG4FF_MODE_G29_IDX … #define LG4FF_MODE_MAX_IDX … #define LG4FF_MODE_NATIVE … #define LG4FF_MODE_DFEX … #define LG4FF_MODE_DFP … #define LG4FF_MODE_G25 … #define LG4FF_MODE_DFGT … #define LG4FF_MODE_G27 … #define LG4FF_MODE_G29 … #define LG4FF_DFEX_TAG … #define LG4FF_DFEX_NAME … #define LG4FF_DFP_TAG … #define LG4FF_DFP_NAME … #define LG4FF_G25_TAG … #define LG4FF_G25_NAME … #define LG4FF_G27_TAG … #define LG4FF_G27_NAME … #define LG4FF_G29_TAG … #define LG4FF_G29_NAME … #define LG4FF_DFGT_TAG … #define LG4FF_DFGT_NAME … #define LG4FF_FFEX_REV_MAJ … #define LG4FF_FFEX_REV_MIN … static void lg4ff_set_range_dfp(struct hid_device *hid, u16 range); static void lg4ff_set_range_g25(struct hid_device *hid, u16 range); struct lg4ff_wheel_data { … }; struct lg4ff_device_entry { … }; static const signed short lg4ff_wheel_effects[] = …; static const signed short no_wheel_effects[] = …; struct lg4ff_wheel { … }; struct lg4ff_compat_mode_switch { … }; struct lg4ff_wheel_ident_info { … }; struct lg4ff_multimode_wheel { … }; struct lg4ff_alternate_mode { … }; static const struct lg4ff_wheel lg4ff_devices[] = …; static const struct lg4ff_multimode_wheel lg4ff_multimode_wheels[] = …; static const struct lg4ff_alternate_mode lg4ff_alternate_modes[] = …; /* Multimode wheel identificators */ static const struct lg4ff_wheel_ident_info lg4ff_dfp_ident_info = …; static const struct lg4ff_wheel_ident_info lg4ff_g25_ident_info = …; static const struct lg4ff_wheel_ident_info lg4ff_g27_ident_info = …; static const struct lg4ff_wheel_ident_info lg4ff_dfgt_ident_info = …; static const struct lg4ff_wheel_ident_info lg4ff_g29_ident_info = …; static const struct lg4ff_wheel_ident_info lg4ff_g29_ident_info2 = …; /* Multimode wheel identification checklists */ static const struct lg4ff_wheel_ident_info *lg4ff_main_checklist[] = …; /* Compatibility mode switching commands */ /* EXT_CMD9 - Understood by G27 and DFGT */ static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfex = …; static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfp = …; static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_g25 = …; static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfgt = …; static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_g27 = …; static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_g29 = …; /* EXT_CMD1 - Understood by DFP, G25, G27 and DFGT */ static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext01_dfp = …; /* EXT_CMD16 - Understood by G25 and G27 */ static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext16_g25 = …; /* Recalculates X axis value accordingly to currently selected range */ static s32 lg4ff_adjust_dfp_x_axis(s32 value, u16 range) { … } int lg4ff_adjust_input_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, s32 value, struct lg_drv_data *drv_data) { … } int lg4ff_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *rd, int size, struct lg_drv_data *drv_data) { … } static void lg4ff_init_wheel_data(struct lg4ff_wheel_data * const wdata, const struct lg4ff_wheel *wheel, const struct lg4ff_multimode_wheel *mmode_wheel, const u16 real_product_id) { … } static int lg4ff_play(struct input_dev *dev, void *data, struct ff_effect *effect) { … } /* Sends default autocentering command compatible with * all wheels except Formula Force EX */ static void lg4ff_set_autocenter_default(struct input_dev *dev, u16 magnitude) { … } /* Sends autocentering command compatible with Formula Force EX */ static void lg4ff_set_autocenter_ffex(struct input_dev *dev, u16 magnitude) { … } /* Sends command to set range compatible with G25/G27/Driving Force GT */ static void lg4ff_set_range_g25(struct hid_device *hid, u16 range) { … } /* Sends commands to set range compatible with Driving Force Pro wheel */ static void lg4ff_set_range_dfp(struct hid_device *hid, u16 range) { … } static const struct lg4ff_compat_mode_switch *lg4ff_get_mode_switch_command(const u16 real_product_id, const u16 target_product_id) { … } static int lg4ff_switch_compatibility_mode(struct hid_device *hid, const struct lg4ff_compat_mode_switch *s) { … } static ssize_t lg4ff_alternate_modes_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t lg4ff_alternate_modes_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static DEVICE_ATTR(alternate_modes, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH, lg4ff_alternate_modes_show, lg4ff_alternate_modes_store); static ssize_t lg4ff_combine_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t lg4ff_combine_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static DEVICE_ATTR(combine_pedals, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH, lg4ff_combine_show, lg4ff_combine_store); /* Export the currently set range of the wheel */ static ssize_t lg4ff_range_show(struct device *dev, struct device_attribute *attr, char *buf) { … } /* Set range to user specified value, call appropriate function * according to the type of the wheel */ static ssize_t lg4ff_range_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static DEVICE_ATTR(range, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH, lg4ff_range_show, lg4ff_range_store); static ssize_t lg4ff_real_id_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t lg4ff_real_id_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static DEVICE_ATTR(real_id, S_IRUGO, lg4ff_real_id_show, lg4ff_real_id_store); #ifdef CONFIG_LEDS_CLASS static void lg4ff_set_leds(struct hid_device *hid, u8 leds) { … } static void lg4ff_led_set_brightness(struct led_classdev *led_cdev, enum led_brightness value) { … } static enum led_brightness lg4ff_led_get_brightness(struct led_classdev *led_cdev) { … } #endif static u16 lg4ff_identify_multimode_wheel(struct hid_device *hid, const u16 reported_product_id, const u16 bcdDevice) { … } static int lg4ff_handle_multimode_wheel(struct hid_device *hid, u16 *real_product_id, const u16 bcdDevice) { … } int lg4ff_init(struct hid_device *hid) { … } int lg4ff_deinit(struct hid_device *hid) { … }
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