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1493 lines
41 KiB
1493 lines
41 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Force feedback support for Logitech Gaming Wheels |
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* |
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* Including G27, G25, DFP, DFGT, FFEX, Momo, Momo2 & |
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* Speed Force Wireless (WiiWheel) |
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* |
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* Copyright (c) 2010 Simon Wood <[email protected]> |
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*/ |
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/* |
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*/ |
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#include <linux/input.h> |
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#include <linux/usb.h> |
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#include <linux/hid.h> |
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#include "usbhid/usbhid.h" |
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#include "hid-lg.h" |
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#include "hid-lg4ff.h" |
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#include "hid-ids.h" |
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#define LG4FF_MMODE_IS_MULTIMODE 0 |
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#define LG4FF_MMODE_SWITCHED 1 |
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#define LG4FF_MMODE_NOT_MULTIMODE 2 |
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#define LG4FF_MODE_NATIVE_IDX 0 |
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#define LG4FF_MODE_DFEX_IDX 1 |
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#define LG4FF_MODE_DFP_IDX 2 |
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#define LG4FF_MODE_G25_IDX 3 |
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#define LG4FF_MODE_DFGT_IDX 4 |
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#define LG4FF_MODE_G27_IDX 5 |
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#define LG4FF_MODE_G29_IDX 6 |
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#define LG4FF_MODE_MAX_IDX 7 |
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#define LG4FF_MODE_NATIVE BIT(LG4FF_MODE_NATIVE_IDX) |
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#define LG4FF_MODE_DFEX BIT(LG4FF_MODE_DFEX_IDX) |
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#define LG4FF_MODE_DFP BIT(LG4FF_MODE_DFP_IDX) |
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#define LG4FF_MODE_G25 BIT(LG4FF_MODE_G25_IDX) |
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#define LG4FF_MODE_DFGT BIT(LG4FF_MODE_DFGT_IDX) |
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#define LG4FF_MODE_G27 BIT(LG4FF_MODE_G27_IDX) |
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#define LG4FF_MODE_G29 BIT(LG4FF_MODE_G29_IDX) |
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#define LG4FF_DFEX_TAG "DF-EX" |
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#define LG4FF_DFEX_NAME "Driving Force / Formula EX" |
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#define LG4FF_DFP_TAG "DFP" |
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#define LG4FF_DFP_NAME "Driving Force Pro" |
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#define LG4FF_G25_TAG "G25" |
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#define LG4FF_G25_NAME "G25 Racing Wheel" |
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#define LG4FF_G27_TAG "G27" |
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#define LG4FF_G27_NAME "G27 Racing Wheel" |
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#define LG4FF_G29_TAG "G29" |
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#define LG4FF_G29_NAME "G29 Racing Wheel" |
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#define LG4FF_DFGT_TAG "DFGT" |
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#define LG4FF_DFGT_NAME "Driving Force GT" |
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#define LG4FF_FFEX_REV_MAJ 0x21 |
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#define LG4FF_FFEX_REV_MIN 0x00 |
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static void lg4ff_set_range_dfp(struct hid_device *hid, u16 range); |
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static void lg4ff_set_range_g25(struct hid_device *hid, u16 range); |
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struct lg4ff_wheel_data { |
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const u32 product_id; |
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u16 combine; |
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u16 range; |
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const u16 min_range; |
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const u16 max_range; |
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#ifdef CONFIG_LEDS_CLASS |
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u8 led_state; |
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struct led_classdev *led[5]; |
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#endif |
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const u32 alternate_modes; |
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const char * const real_tag; |
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const char * const real_name; |
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const u16 real_product_id; |
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void (*set_range)(struct hid_device *hid, u16 range); |
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}; |
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struct lg4ff_device_entry { |
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spinlock_t report_lock; /* Protect output HID report */ |
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struct hid_report *report; |
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struct lg4ff_wheel_data wdata; |
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}; |
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static const signed short lg4ff_wheel_effects[] = { |
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FF_CONSTANT, |
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FF_AUTOCENTER, |
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-1 |
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}; |
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static const signed short no_wheel_effects[] = { |
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-1 |
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}; |
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struct lg4ff_wheel { |
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const u32 product_id; |
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const signed short *ff_effects; |
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const u16 min_range; |
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const u16 max_range; |
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void (*set_range)(struct hid_device *hid, u16 range); |
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}; |
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struct lg4ff_compat_mode_switch { |
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const u8 cmd_count; /* Number of commands to send */ |
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const u8 cmd[]; |
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}; |
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struct lg4ff_wheel_ident_info { |
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const u32 modes; |
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const u16 mask; |
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const u16 result; |
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const u16 real_product_id; |
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}; |
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struct lg4ff_multimode_wheel { |
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const u16 product_id; |
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const u32 alternate_modes; |
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const char *real_tag; |
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const char *real_name; |
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}; |
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struct lg4ff_alternate_mode { |
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const u16 product_id; |
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const char *tag; |
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const char *name; |
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}; |
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static const struct lg4ff_wheel lg4ff_devices[] = { |
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{USB_DEVICE_ID_LOGITECH_WINGMAN_FG, no_wheel_effects, 40, 180, NULL}, |
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{USB_DEVICE_ID_LOGITECH_WINGMAN_FFG, lg4ff_wheel_effects, 40, 180, NULL}, |
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{USB_DEVICE_ID_LOGITECH_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, |
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{USB_DEVICE_ID_LOGITECH_MOMO_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, |
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{USB_DEVICE_ID_LOGITECH_DFP_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_dfp}, |
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{USB_DEVICE_ID_LOGITECH_G25_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, |
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{USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, |
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{USB_DEVICE_ID_LOGITECH_G27_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, |
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{USB_DEVICE_ID_LOGITECH_G29_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, |
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{USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2, lg4ff_wheel_effects, 40, 270, NULL}, |
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{USB_DEVICE_ID_LOGITECH_WII_WHEEL, lg4ff_wheel_effects, 40, 270, NULL} |
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}; |
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static const struct lg4ff_multimode_wheel lg4ff_multimode_wheels[] = { |
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{USB_DEVICE_ID_LOGITECH_DFP_WHEEL, |
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LG4FF_MODE_NATIVE | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
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LG4FF_DFP_TAG, LG4FF_DFP_NAME}, |
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{USB_DEVICE_ID_LOGITECH_G25_WHEEL, |
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LG4FF_MODE_NATIVE | LG4FF_MODE_G25 | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
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LG4FF_G25_TAG, LG4FF_G25_NAME}, |
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{USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, |
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LG4FF_MODE_NATIVE | LG4FF_MODE_DFGT | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
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LG4FF_DFGT_TAG, LG4FF_DFGT_NAME}, |
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{USB_DEVICE_ID_LOGITECH_G27_WHEEL, |
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LG4FF_MODE_NATIVE | LG4FF_MODE_G27 | LG4FF_MODE_G25 | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
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LG4FF_G27_TAG, LG4FF_G27_NAME}, |
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{USB_DEVICE_ID_LOGITECH_G29_WHEEL, |
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LG4FF_MODE_NATIVE | LG4FF_MODE_G29 | LG4FF_MODE_G27 | LG4FF_MODE_G25 | LG4FF_MODE_DFGT | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
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LG4FF_G29_TAG, LG4FF_G29_NAME}, |
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}; |
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static const struct lg4ff_alternate_mode lg4ff_alternate_modes[] = { |
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[LG4FF_MODE_NATIVE_IDX] = {0, "native", ""}, |
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[LG4FF_MODE_DFEX_IDX] = {USB_DEVICE_ID_LOGITECH_WHEEL, LG4FF_DFEX_TAG, LG4FF_DFEX_NAME}, |
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[LG4FF_MODE_DFP_IDX] = {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, LG4FF_DFP_TAG, LG4FF_DFP_NAME}, |
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[LG4FF_MODE_G25_IDX] = {USB_DEVICE_ID_LOGITECH_G25_WHEEL, LG4FF_G25_TAG, LG4FF_G25_NAME}, |
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[LG4FF_MODE_DFGT_IDX] = {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, LG4FF_DFGT_TAG, LG4FF_DFGT_NAME}, |
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[LG4FF_MODE_G27_IDX] = {USB_DEVICE_ID_LOGITECH_G27_WHEEL, LG4FF_G27_TAG, LG4FF_G27_NAME}, |
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[LG4FF_MODE_G29_IDX] = {USB_DEVICE_ID_LOGITECH_G29_WHEEL, LG4FF_G29_TAG, LG4FF_G29_NAME}, |
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}; |
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/* Multimode wheel identificators */ |
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static const struct lg4ff_wheel_ident_info lg4ff_dfp_ident_info = { |
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LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
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0xf000, |
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0x1000, |
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USB_DEVICE_ID_LOGITECH_DFP_WHEEL |
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}; |
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static const struct lg4ff_wheel_ident_info lg4ff_g25_ident_info = { |
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LG4FF_MODE_G25 | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
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0xff00, |
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0x1200, |
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USB_DEVICE_ID_LOGITECH_G25_WHEEL |
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}; |
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static const struct lg4ff_wheel_ident_info lg4ff_g27_ident_info = { |
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LG4FF_MODE_G27 | LG4FF_MODE_G25 | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
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0xfff0, |
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0x1230, |
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USB_DEVICE_ID_LOGITECH_G27_WHEEL |
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}; |
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static const struct lg4ff_wheel_ident_info lg4ff_dfgt_ident_info = { |
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LG4FF_MODE_DFGT | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
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0xff00, |
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0x1300, |
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USB_DEVICE_ID_LOGITECH_DFGT_WHEEL |
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}; |
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static const struct lg4ff_wheel_ident_info lg4ff_g29_ident_info = { |
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LG4FF_MODE_G29 | LG4FF_MODE_G27 | LG4FF_MODE_G25 | LG4FF_MODE_DFGT | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
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0xfff8, |
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0x1350, |
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USB_DEVICE_ID_LOGITECH_G29_WHEEL |
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}; |
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static const struct lg4ff_wheel_ident_info lg4ff_g29_ident_info2 = { |
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LG4FF_MODE_G29 | LG4FF_MODE_G27 | LG4FF_MODE_G25 | LG4FF_MODE_DFGT | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
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0xff00, |
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0x8900, |
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USB_DEVICE_ID_LOGITECH_G29_WHEEL |
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}; |
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/* Multimode wheel identification checklists */ |
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static const struct lg4ff_wheel_ident_info *lg4ff_main_checklist[] = { |
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&lg4ff_g29_ident_info, |
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&lg4ff_g29_ident_info2, |
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&lg4ff_dfgt_ident_info, |
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&lg4ff_g27_ident_info, |
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&lg4ff_g25_ident_info, |
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&lg4ff_dfp_ident_info |
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}; |
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/* Compatibility mode switching commands */ |
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/* EXT_CMD9 - Understood by G27 and DFGT */ |
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static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfex = { |
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2, |
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{0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ |
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0xf8, 0x09, 0x00, 0x01, 0x00, 0x00, 0x00} /* Switch mode to DF-EX with detach */ |
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}; |
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static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfp = { |
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2, |
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{0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ |
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0xf8, 0x09, 0x01, 0x01, 0x00, 0x00, 0x00} /* Switch mode to DFP with detach */ |
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}; |
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static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_g25 = { |
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2, |
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{0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ |
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0xf8, 0x09, 0x02, 0x01, 0x00, 0x00, 0x00} /* Switch mode to G25 with detach */ |
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}; |
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static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfgt = { |
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2, |
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{0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ |
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0xf8, 0x09, 0x03, 0x01, 0x00, 0x00, 0x00} /* Switch mode to DFGT with detach */ |
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}; |
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static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_g27 = { |
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2, |
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{0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ |
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0xf8, 0x09, 0x04, 0x01, 0x00, 0x00, 0x00} /* Switch mode to G27 with detach */ |
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}; |
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static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_g29 = { |
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2, |
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{0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ |
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0xf8, 0x09, 0x05, 0x01, 0x01, 0x00, 0x00} /* Switch mode to G29 with detach */ |
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}; |
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/* EXT_CMD1 - Understood by DFP, G25, G27 and DFGT */ |
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static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext01_dfp = { |
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1, |
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{0xf8, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00} |
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}; |
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/* EXT_CMD16 - Understood by G25 and G27 */ |
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static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext16_g25 = { |
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1, |
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{0xf8, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00} |
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}; |
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/* Recalculates X axis value accordingly to currently selected range */ |
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static s32 lg4ff_adjust_dfp_x_axis(s32 value, u16 range) |
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{ |
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u16 max_range; |
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s32 new_value; |
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if (range == 900) |
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return value; |
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else if (range == 200) |
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return value; |
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else if (range < 200) |
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max_range = 200; |
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else |
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max_range = 900; |
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new_value = 8192 + mult_frac(value - 8192, max_range, range); |
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if (new_value < 0) |
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return 0; |
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else if (new_value > 16383) |
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return 16383; |
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else |
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return new_value; |
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} |
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int lg4ff_adjust_input_event(struct hid_device *hid, struct hid_field *field, |
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struct hid_usage *usage, s32 value, struct lg_drv_data *drv_data) |
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{ |
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struct lg4ff_device_entry *entry = drv_data->device_props; |
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s32 new_value = 0; |
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if (!entry) { |
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hid_err(hid, "Device properties not found"); |
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return 0; |
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} |
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switch (entry->wdata.product_id) { |
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case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
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switch (usage->code) { |
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case ABS_X: |
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new_value = lg4ff_adjust_dfp_x_axis(value, entry->wdata.range); |
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input_event(field->hidinput->input, usage->type, usage->code, new_value); |
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return 1; |
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default: |
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return 0; |
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} |
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default: |
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return 0; |
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} |
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} |
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int lg4ff_raw_event(struct hid_device *hdev, struct hid_report *report, |
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u8 *rd, int size, struct lg_drv_data *drv_data) |
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{ |
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int offset; |
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struct lg4ff_device_entry *entry = drv_data->device_props; |
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if (!entry) |
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return 0; |
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/* adjust HID report present combined pedals data */ |
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if (entry->wdata.combine) { |
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switch (entry->wdata.product_id) { |
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case USB_DEVICE_ID_LOGITECH_WHEEL: |
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rd[5] = rd[3]; |
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rd[6] = 0x7F; |
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return 1; |
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case USB_DEVICE_ID_LOGITECH_WINGMAN_FG: |
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case USB_DEVICE_ID_LOGITECH_WINGMAN_FFG: |
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case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL: |
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case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2: |
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rd[4] = rd[3]; |
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rd[5] = 0x7F; |
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return 1; |
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case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
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rd[5] = rd[4]; |
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rd[6] = 0x7F; |
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return 1; |
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case USB_DEVICE_ID_LOGITECH_G25_WHEEL: |
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case USB_DEVICE_ID_LOGITECH_G27_WHEEL: |
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offset = 5; |
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break; |
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case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL: |
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case USB_DEVICE_ID_LOGITECH_G29_WHEEL: |
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offset = 6; |
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break; |
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case USB_DEVICE_ID_LOGITECH_WII_WHEEL: |
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offset = 3; |
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break; |
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default: |
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return 0; |
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} |
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/* Compute a combined axis when wheel does not supply it */ |
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rd[offset] = (0xFF + rd[offset] - rd[offset+1]) >> 1; |
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rd[offset+1] = 0x7F; |
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return 1; |
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} |
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return 0; |
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} |
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static void lg4ff_init_wheel_data(struct lg4ff_wheel_data * const wdata, const struct lg4ff_wheel *wheel, |
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const struct lg4ff_multimode_wheel *mmode_wheel, |
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const u16 real_product_id) |
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{ |
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u32 alternate_modes = 0; |
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const char *real_tag = NULL; |
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const char *real_name = NULL; |
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if (mmode_wheel) { |
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alternate_modes = mmode_wheel->alternate_modes; |
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real_tag = mmode_wheel->real_tag; |
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real_name = mmode_wheel->real_name; |
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} |
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{ |
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struct lg4ff_wheel_data t_wdata = { .product_id = wheel->product_id, |
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.real_product_id = real_product_id, |
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.combine = 0, |
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.min_range = wheel->min_range, |
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.max_range = wheel->max_range, |
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.set_range = wheel->set_range, |
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.alternate_modes = alternate_modes, |
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.real_tag = real_tag, |
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.real_name = real_name }; |
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memcpy(wdata, &t_wdata, sizeof(t_wdata)); |
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} |
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} |
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static int lg4ff_play(struct input_dev *dev, void *data, struct ff_effect *effect) |
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{ |
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struct hid_device *hid = input_get_drvdata(dev); |
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struct lg4ff_device_entry *entry; |
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struct lg_drv_data *drv_data; |
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unsigned long flags; |
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s32 *value; |
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int x; |
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drv_data = hid_get_drvdata(hid); |
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if (!drv_data) { |
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hid_err(hid, "Private driver data not found!\n"); |
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return -EINVAL; |
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} |
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entry = drv_data->device_props; |
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if (!entry) { |
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hid_err(hid, "Device properties not found!\n"); |
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return -EINVAL; |
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} |
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value = entry->report->field[0]->value; |
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|
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#define CLAMP(x) do { if (x < 0) x = 0; else if (x > 0xff) x = 0xff; } while (0) |
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switch (effect->type) { |
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case FF_CONSTANT: |
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x = effect->u.ramp.start_level + 0x80; /* 0x80 is no force */ |
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CLAMP(x); |
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spin_lock_irqsave(&entry->report_lock, flags); |
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if (x == 0x80) { |
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/* De-activate force in slot-1*/ |
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value[0] = 0x13; |
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value[1] = 0x00; |
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value[2] = 0x00; |
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value[3] = 0x00; |
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value[4] = 0x00; |
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value[5] = 0x00; |
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value[6] = 0x00; |
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hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
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spin_unlock_irqrestore(&entry->report_lock, flags); |
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return 0; |
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} |
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value[0] = 0x11; /* Slot 1 */ |
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value[1] = 0x08; |
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value[2] = x; |
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value[3] = 0x80; |
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value[4] = 0x00; |
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value[5] = 0x00; |
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value[6] = 0x00; |
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|
|
hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
|
spin_unlock_irqrestore(&entry->report_lock, flags); |
|
break; |
|
} |
|
return 0; |
|
} |
|
|
|
/* Sends default autocentering command compatible with |
|
* all wheels except Formula Force EX */ |
|
static void lg4ff_set_autocenter_default(struct input_dev *dev, u16 magnitude) |
|
{ |
|
struct hid_device *hid = input_get_drvdata(dev); |
|
s32 *value; |
|
u32 expand_a, expand_b; |
|
struct lg4ff_device_entry *entry; |
|
struct lg_drv_data *drv_data; |
|
unsigned long flags; |
|
|
|
drv_data = hid_get_drvdata(hid); |
|
if (!drv_data) { |
|
hid_err(hid, "Private driver data not found!\n"); |
|
return; |
|
} |
|
|
|
entry = drv_data->device_props; |
|
if (!entry) { |
|
hid_err(hid, "Device properties not found!\n"); |
|
return; |
|
} |
|
value = entry->report->field[0]->value; |
|
|
|
/* De-activate Auto-Center */ |
|
spin_lock_irqsave(&entry->report_lock, flags); |
|
if (magnitude == 0) { |
|
value[0] = 0xf5; |
|
value[1] = 0x00; |
|
value[2] = 0x00; |
|
value[3] = 0x00; |
|
value[4] = 0x00; |
|
value[5] = 0x00; |
|
value[6] = 0x00; |
|
|
|
hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
|
spin_unlock_irqrestore(&entry->report_lock, flags); |
|
return; |
|
} |
|
|
|
if (magnitude <= 0xaaaa) { |
|
expand_a = 0x0c * magnitude; |
|
expand_b = 0x80 * magnitude; |
|
} else { |
|
expand_a = (0x0c * 0xaaaa) + 0x06 * (magnitude - 0xaaaa); |
|
expand_b = (0x80 * 0xaaaa) + 0xff * (magnitude - 0xaaaa); |
|
} |
|
|
|
/* Adjust for non-MOMO wheels */ |
|
switch (entry->wdata.product_id) { |
|
case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL: |
|
case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2: |
|
break; |
|
default: |
|
expand_a = expand_a >> 1; |
|
break; |
|
} |
|
|
|
value[0] = 0xfe; |
|
value[1] = 0x0d; |
|
value[2] = expand_a / 0xaaaa; |
|
value[3] = expand_a / 0xaaaa; |
|
value[4] = expand_b / 0xaaaa; |
|
value[5] = 0x00; |
|
value[6] = 0x00; |
|
|
|
hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
|
|
|
/* Activate Auto-Center */ |
|
value[0] = 0x14; |
|
value[1] = 0x00; |
|
value[2] = 0x00; |
|
value[3] = 0x00; |
|
value[4] = 0x00; |
|
value[5] = 0x00; |
|
value[6] = 0x00; |
|
|
|
hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
|
spin_unlock_irqrestore(&entry->report_lock, flags); |
|
} |
|
|
|
/* Sends autocentering command compatible with Formula Force EX */ |
|
static void lg4ff_set_autocenter_ffex(struct input_dev *dev, u16 magnitude) |
|
{ |
|
struct hid_device *hid = input_get_drvdata(dev); |
|
struct lg4ff_device_entry *entry; |
|
struct lg_drv_data *drv_data; |
|
unsigned long flags; |
|
s32 *value; |
|
magnitude = magnitude * 90 / 65535; |
|
|
|
drv_data = hid_get_drvdata(hid); |
|
if (!drv_data) { |
|
hid_err(hid, "Private driver data not found!\n"); |
|
return; |
|
} |
|
|
|
entry = drv_data->device_props; |
|
if (!entry) { |
|
hid_err(hid, "Device properties not found!\n"); |
|
return; |
|
} |
|
value = entry->report->field[0]->value; |
|
|
|
spin_lock_irqsave(&entry->report_lock, flags); |
|
value[0] = 0xfe; |
|
value[1] = 0x03; |
|
value[2] = magnitude >> 14; |
|
value[3] = magnitude >> 14; |
|
value[4] = magnitude; |
|
value[5] = 0x00; |
|
value[6] = 0x00; |
|
|
|
hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
|
spin_unlock_irqrestore(&entry->report_lock, flags); |
|
} |
|
|
|
/* Sends command to set range compatible with G25/G27/Driving Force GT */ |
|
static void lg4ff_set_range_g25(struct hid_device *hid, u16 range) |
|
{ |
|
struct lg4ff_device_entry *entry; |
|
struct lg_drv_data *drv_data; |
|
unsigned long flags; |
|
s32 *value; |
|
|
|
drv_data = hid_get_drvdata(hid); |
|
if (!drv_data) { |
|
hid_err(hid, "Private driver data not found!\n"); |
|
return; |
|
} |
|
|
|
entry = drv_data->device_props; |
|
if (!entry) { |
|
hid_err(hid, "Device properties not found!\n"); |
|
return; |
|
} |
|
value = entry->report->field[0]->value; |
|
dbg_hid("G25/G27/DFGT: setting range to %u\n", range); |
|
|
|
spin_lock_irqsave(&entry->report_lock, flags); |
|
value[0] = 0xf8; |
|
value[1] = 0x81; |
|
value[2] = range & 0x00ff; |
|
value[3] = (range & 0xff00) >> 8; |
|
value[4] = 0x00; |
|
value[5] = 0x00; |
|
value[6] = 0x00; |
|
|
|
hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
|
spin_unlock_irqrestore(&entry->report_lock, flags); |
|
} |
|
|
|
/* Sends commands to set range compatible with Driving Force Pro wheel */ |
|
static void lg4ff_set_range_dfp(struct hid_device *hid, u16 range) |
|
{ |
|
struct lg4ff_device_entry *entry; |
|
struct lg_drv_data *drv_data; |
|
unsigned long flags; |
|
int start_left, start_right, full_range; |
|
s32 *value; |
|
|
|
drv_data = hid_get_drvdata(hid); |
|
if (!drv_data) { |
|
hid_err(hid, "Private driver data not found!\n"); |
|
return; |
|
} |
|
|
|
entry = drv_data->device_props; |
|
if (!entry) { |
|
hid_err(hid, "Device properties not found!\n"); |
|
return; |
|
} |
|
value = entry->report->field[0]->value; |
|
dbg_hid("Driving Force Pro: setting range to %u\n", range); |
|
|
|
/* Prepare "coarse" limit command */ |
|
spin_lock_irqsave(&entry->report_lock, flags); |
|
value[0] = 0xf8; |
|
value[1] = 0x00; /* Set later */ |
|
value[2] = 0x00; |
|
value[3] = 0x00; |
|
value[4] = 0x00; |
|
value[5] = 0x00; |
|
value[6] = 0x00; |
|
|
|
if (range > 200) { |
|
value[1] = 0x03; |
|
full_range = 900; |
|
} else { |
|
value[1] = 0x02; |
|
full_range = 200; |
|
} |
|
hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
|
|
|
/* Prepare "fine" limit command */ |
|
value[0] = 0x81; |
|
value[1] = 0x0b; |
|
value[2] = 0x00; |
|
value[3] = 0x00; |
|
value[4] = 0x00; |
|
value[5] = 0x00; |
|
value[6] = 0x00; |
|
|
|
if (range == 200 || range == 900) { /* Do not apply any fine limit */ |
|
hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
|
spin_unlock_irqrestore(&entry->report_lock, flags); |
|
return; |
|
} |
|
|
|
/* Construct fine limit command */ |
|
start_left = (((full_range - range + 1) * 2047) / full_range); |
|
start_right = 0xfff - start_left; |
|
|
|
value[2] = start_left >> 4; |
|
value[3] = start_right >> 4; |
|
value[4] = 0xff; |
|
value[5] = (start_right & 0xe) << 4 | (start_left & 0xe); |
|
value[6] = 0xff; |
|
|
|
hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
|
spin_unlock_irqrestore(&entry->report_lock, flags); |
|
} |
|
|
|
static const struct lg4ff_compat_mode_switch *lg4ff_get_mode_switch_command(const u16 real_product_id, const u16 target_product_id) |
|
{ |
|
switch (real_product_id) { |
|
case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
|
switch (target_product_id) { |
|
case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
|
return &lg4ff_mode_switch_ext01_dfp; |
|
/* DFP can only be switched to its native mode */ |
|
default: |
|
return NULL; |
|
} |
|
break; |
|
case USB_DEVICE_ID_LOGITECH_G25_WHEEL: |
|
switch (target_product_id) { |
|
case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
|
return &lg4ff_mode_switch_ext01_dfp; |
|
case USB_DEVICE_ID_LOGITECH_G25_WHEEL: |
|
return &lg4ff_mode_switch_ext16_g25; |
|
/* G25 can only be switched to DFP mode or its native mode */ |
|
default: |
|
return NULL; |
|
} |
|
break; |
|
case USB_DEVICE_ID_LOGITECH_G27_WHEEL: |
|
switch (target_product_id) { |
|
case USB_DEVICE_ID_LOGITECH_WHEEL: |
|
return &lg4ff_mode_switch_ext09_dfex; |
|
case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
|
return &lg4ff_mode_switch_ext09_dfp; |
|
case USB_DEVICE_ID_LOGITECH_G25_WHEEL: |
|
return &lg4ff_mode_switch_ext09_g25; |
|
case USB_DEVICE_ID_LOGITECH_G27_WHEEL: |
|
return &lg4ff_mode_switch_ext09_g27; |
|
/* G27 can only be switched to DF-EX, DFP, G25 or its native mode */ |
|
default: |
|
return NULL; |
|
} |
|
break; |
|
case USB_DEVICE_ID_LOGITECH_G29_WHEEL: |
|
switch (target_product_id) { |
|
case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
|
return &lg4ff_mode_switch_ext09_dfp; |
|
case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL: |
|
return &lg4ff_mode_switch_ext09_dfgt; |
|
case USB_DEVICE_ID_LOGITECH_G25_WHEEL: |
|
return &lg4ff_mode_switch_ext09_g25; |
|
case USB_DEVICE_ID_LOGITECH_G27_WHEEL: |
|
return &lg4ff_mode_switch_ext09_g27; |
|
case USB_DEVICE_ID_LOGITECH_G29_WHEEL: |
|
return &lg4ff_mode_switch_ext09_g29; |
|
/* G29 can only be switched to DF-EX, DFP, DFGT, G25, G27 or its native mode */ |
|
default: |
|
return NULL; |
|
} |
|
break; |
|
case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL: |
|
switch (target_product_id) { |
|
case USB_DEVICE_ID_LOGITECH_WHEEL: |
|
return &lg4ff_mode_switch_ext09_dfex; |
|
case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
|
return &lg4ff_mode_switch_ext09_dfp; |
|
case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL: |
|
return &lg4ff_mode_switch_ext09_dfgt; |
|
/* DFGT can only be switched to DF-EX, DFP or its native mode */ |
|
default: |
|
return NULL; |
|
} |
|
break; |
|
/* No other wheels have multiple modes */ |
|
default: |
|
return NULL; |
|
} |
|
} |
|
|
|
static int lg4ff_switch_compatibility_mode(struct hid_device *hid, const struct lg4ff_compat_mode_switch *s) |
|
{ |
|
struct lg4ff_device_entry *entry; |
|
struct lg_drv_data *drv_data; |
|
unsigned long flags; |
|
s32 *value; |
|
u8 i; |
|
|
|
drv_data = hid_get_drvdata(hid); |
|
if (!drv_data) { |
|
hid_err(hid, "Private driver data not found!\n"); |
|
return -EINVAL; |
|
} |
|
|
|
entry = drv_data->device_props; |
|
if (!entry) { |
|
hid_err(hid, "Device properties not found!\n"); |
|
return -EINVAL; |
|
} |
|
value = entry->report->field[0]->value; |
|
|
|
spin_lock_irqsave(&entry->report_lock, flags); |
|
for (i = 0; i < s->cmd_count; i++) { |
|
u8 j; |
|
|
|
for (j = 0; j < 7; j++) |
|
value[j] = s->cmd[j + (7*i)]; |
|
|
|
hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
|
} |
|
spin_unlock_irqrestore(&entry->report_lock, flags); |
|
hid_hw_wait(hid); |
|
return 0; |
|
} |
|
|
|
static ssize_t lg4ff_alternate_modes_show(struct device *dev, struct device_attribute *attr, char *buf) |
|
{ |
|
struct hid_device *hid = to_hid_device(dev); |
|
struct lg4ff_device_entry *entry; |
|
struct lg_drv_data *drv_data; |
|
ssize_t count = 0; |
|
int i; |
|
|
|
drv_data = hid_get_drvdata(hid); |
|
if (!drv_data) { |
|
hid_err(hid, "Private driver data not found!\n"); |
|
return 0; |
|
} |
|
|
|
entry = drv_data->device_props; |
|
if (!entry) { |
|
hid_err(hid, "Device properties not found!\n"); |
|
return 0; |
|
} |
|
|
|
if (!entry->wdata.real_name) { |
|
hid_err(hid, "NULL pointer to string\n"); |
|
return 0; |
|
} |
|
|
|
for (i = 0; i < LG4FF_MODE_MAX_IDX; i++) { |
|
if (entry->wdata.alternate_modes & BIT(i)) { |
|
/* Print tag and full name */ |
|
count += scnprintf(buf + count, PAGE_SIZE - count, "%s: %s", |
|
lg4ff_alternate_modes[i].tag, |
|
!lg4ff_alternate_modes[i].product_id ? entry->wdata.real_name : lg4ff_alternate_modes[i].name); |
|
if (count >= PAGE_SIZE - 1) |
|
return count; |
|
|
|
/* Mark the currently active mode with an asterisk */ |
|
if (lg4ff_alternate_modes[i].product_id == entry->wdata.product_id || |
|
(lg4ff_alternate_modes[i].product_id == 0 && entry->wdata.product_id == entry->wdata.real_product_id)) |
|
count += scnprintf(buf + count, PAGE_SIZE - count, " *\n"); |
|
else |
|
count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); |
|
|
|
if (count >= PAGE_SIZE - 1) |
|
return count; |
|
} |
|
} |
|
|
|
return count; |
|
} |
|
|
|
static ssize_t lg4ff_alternate_modes_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
|
{ |
|
struct hid_device *hid = to_hid_device(dev); |
|
struct lg4ff_device_entry *entry; |
|
struct lg_drv_data *drv_data; |
|
const struct lg4ff_compat_mode_switch *s; |
|
u16 target_product_id = 0; |
|
int i, ret; |
|
char *lbuf; |
|
|
|
drv_data = hid_get_drvdata(hid); |
|
if (!drv_data) { |
|
hid_err(hid, "Private driver data not found!\n"); |
|
return -EINVAL; |
|
} |
|
|
|
entry = drv_data->device_props; |
|
if (!entry) { |
|
hid_err(hid, "Device properties not found!\n"); |
|
return -EINVAL; |
|
} |
|
|
|
/* Allow \n at the end of the input parameter */ |
|
lbuf = kasprintf(GFP_KERNEL, "%s", buf); |
|
if (!lbuf) |
|
return -ENOMEM; |
|
|
|
i = strlen(lbuf); |
|
if (lbuf[i-1] == '\n') { |
|
if (i == 1) { |
|
kfree(lbuf); |
|
return -EINVAL; |
|
} |
|
lbuf[i-1] = '\0'; |
|
} |
|
|
|
for (i = 0; i < LG4FF_MODE_MAX_IDX; i++) { |
|
const u16 mode_product_id = lg4ff_alternate_modes[i].product_id; |
|
const char *tag = lg4ff_alternate_modes[i].tag; |
|
|
|
if (entry->wdata.alternate_modes & BIT(i)) { |
|
if (!strcmp(tag, lbuf)) { |
|
if (!mode_product_id) |
|
target_product_id = entry->wdata.real_product_id; |
|
else |
|
target_product_id = mode_product_id; |
|
break; |
|
} |
|
} |
|
} |
|
|
|
if (i == LG4FF_MODE_MAX_IDX) { |
|
hid_info(hid, "Requested mode \"%s\" is not supported by the device\n", lbuf); |
|
kfree(lbuf); |
|
return -EINVAL; |
|
} |
|
kfree(lbuf); /* Not needed anymore */ |
|
|
|
if (target_product_id == entry->wdata.product_id) /* Nothing to do */ |
|
return count; |
|
|
|
/* Automatic switching has to be disabled for the switch to DF-EX mode to work correctly */ |
|
if (target_product_id == USB_DEVICE_ID_LOGITECH_WHEEL && !lg4ff_no_autoswitch) { |
|
hid_info(hid, "\"%s\" cannot be switched to \"DF-EX\" mode. Load the \"hid_logitech\" module with \"lg4ff_no_autoswitch=1\" parameter set and try again\n", |
|
entry->wdata.real_name); |
|
return -EINVAL; |
|
} |
|
|
|
/* Take care of hardware limitations */ |
|
if ((entry->wdata.real_product_id == USB_DEVICE_ID_LOGITECH_DFP_WHEEL || entry->wdata.real_product_id == USB_DEVICE_ID_LOGITECH_G25_WHEEL) && |
|
entry->wdata.product_id > target_product_id) { |
|
hid_info(hid, "\"%s\" cannot be switched back into \"%s\" mode\n", entry->wdata.real_name, lg4ff_alternate_modes[i].name); |
|
return -EINVAL; |
|
} |
|
|
|
s = lg4ff_get_mode_switch_command(entry->wdata.real_product_id, target_product_id); |
|
if (!s) { |
|
hid_err(hid, "Invalid target product ID %X\n", target_product_id); |
|
return -EINVAL; |
|
} |
|
|
|
ret = lg4ff_switch_compatibility_mode(hid, s); |
|
return (ret == 0 ? count : ret); |
|
} |
|
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) |
|
{ |
|
struct hid_device *hid = to_hid_device(dev); |
|
struct lg4ff_device_entry *entry; |
|
struct lg_drv_data *drv_data; |
|
size_t count; |
|
|
|
drv_data = hid_get_drvdata(hid); |
|
if (!drv_data) { |
|
hid_err(hid, "Private driver data not found!\n"); |
|
return 0; |
|
} |
|
|
|
entry = drv_data->device_props; |
|
if (!entry) { |
|
hid_err(hid, "Device properties not found!\n"); |
|
return 0; |
|
} |
|
|
|
count = scnprintf(buf, PAGE_SIZE, "%u\n", entry->wdata.combine); |
|
return count; |
|
} |
|
|
|
static ssize_t lg4ff_combine_store(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct hid_device *hid = to_hid_device(dev); |
|
struct lg4ff_device_entry *entry; |
|
struct lg_drv_data *drv_data; |
|
u16 combine = simple_strtoul(buf, NULL, 10); |
|
|
|
drv_data = hid_get_drvdata(hid); |
|
if (!drv_data) { |
|
hid_err(hid, "Private driver data not found!\n"); |
|
return -EINVAL; |
|
} |
|
|
|
entry = drv_data->device_props; |
|
if (!entry) { |
|
hid_err(hid, "Device properties not found!\n"); |
|
return -EINVAL; |
|
} |
|
|
|
if (combine > 1) |
|
combine = 1; |
|
|
|
entry->wdata.combine = combine; |
|
return 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) |
|
{ |
|
struct hid_device *hid = to_hid_device(dev); |
|
struct lg4ff_device_entry *entry; |
|
struct lg_drv_data *drv_data; |
|
size_t count; |
|
|
|
drv_data = hid_get_drvdata(hid); |
|
if (!drv_data) { |
|
hid_err(hid, "Private driver data not found!\n"); |
|
return 0; |
|
} |
|
|
|
entry = drv_data->device_props; |
|
if (!entry) { |
|
hid_err(hid, "Device properties not found!\n"); |
|
return 0; |
|
} |
|
|
|
count = scnprintf(buf, PAGE_SIZE, "%u\n", entry->wdata.range); |
|
return count; |
|
} |
|
|
|
/* 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) |
|
{ |
|
struct hid_device *hid = to_hid_device(dev); |
|
struct lg4ff_device_entry *entry; |
|
struct lg_drv_data *drv_data; |
|
u16 range = simple_strtoul(buf, NULL, 10); |
|
|
|
drv_data = hid_get_drvdata(hid); |
|
if (!drv_data) { |
|
hid_err(hid, "Private driver data not found!\n"); |
|
return -EINVAL; |
|
} |
|
|
|
entry = drv_data->device_props; |
|
if (!entry) { |
|
hid_err(hid, "Device properties not found!\n"); |
|
return -EINVAL; |
|
} |
|
|
|
if (range == 0) |
|
range = entry->wdata.max_range; |
|
|
|
/* Check if the wheel supports range setting |
|
* and that the range is within limits for the wheel */ |
|
if (entry->wdata.set_range && range >= entry->wdata.min_range && range <= entry->wdata.max_range) { |
|
entry->wdata.set_range(hid, range); |
|
entry->wdata.range = range; |
|
} |
|
|
|
return 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) |
|
{ |
|
struct hid_device *hid = to_hid_device(dev); |
|
struct lg4ff_device_entry *entry; |
|
struct lg_drv_data *drv_data; |
|
size_t count; |
|
|
|
drv_data = hid_get_drvdata(hid); |
|
if (!drv_data) { |
|
hid_err(hid, "Private driver data not found!\n"); |
|
return 0; |
|
} |
|
|
|
entry = drv_data->device_props; |
|
if (!entry) { |
|
hid_err(hid, "Device properties not found!\n"); |
|
return 0; |
|
} |
|
|
|
if (!entry->wdata.real_tag || !entry->wdata.real_name) { |
|
hid_err(hid, "NULL pointer to string\n"); |
|
return 0; |
|
} |
|
|
|
count = scnprintf(buf, PAGE_SIZE, "%s: %s\n", entry->wdata.real_tag, entry->wdata.real_name); |
|
return count; |
|
} |
|
|
|
static ssize_t lg4ff_real_id_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
|
{ |
|
/* Real ID is a read-only value */ |
|
return -EPERM; |
|
} |
|
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) |
|
{ |
|
struct lg_drv_data *drv_data; |
|
struct lg4ff_device_entry *entry; |
|
unsigned long flags; |
|
s32 *value; |
|
|
|
drv_data = hid_get_drvdata(hid); |
|
if (!drv_data) { |
|
hid_err(hid, "Private driver data not found!\n"); |
|
return; |
|
} |
|
|
|
entry = drv_data->device_props; |
|
if (!entry) { |
|
hid_err(hid, "Device properties not found!\n"); |
|
return; |
|
} |
|
value = entry->report->field[0]->value; |
|
|
|
spin_lock_irqsave(&entry->report_lock, flags); |
|
value[0] = 0xf8; |
|
value[1] = 0x12; |
|
value[2] = leds; |
|
value[3] = 0x00; |
|
value[4] = 0x00; |
|
value[5] = 0x00; |
|
value[6] = 0x00; |
|
hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
|
spin_unlock_irqrestore(&entry->report_lock, flags); |
|
} |
|
|
|
static void lg4ff_led_set_brightness(struct led_classdev *led_cdev, |
|
enum led_brightness value) |
|
{ |
|
struct device *dev = led_cdev->dev->parent; |
|
struct hid_device *hid = to_hid_device(dev); |
|
struct lg_drv_data *drv_data = hid_get_drvdata(hid); |
|
struct lg4ff_device_entry *entry; |
|
int i, state = 0; |
|
|
|
if (!drv_data) { |
|
hid_err(hid, "Device data not found."); |
|
return; |
|
} |
|
|
|
entry = drv_data->device_props; |
|
|
|
if (!entry) { |
|
hid_err(hid, "Device properties not found."); |
|
return; |
|
} |
|
|
|
for (i = 0; i < 5; i++) { |
|
if (led_cdev != entry->wdata.led[i]) |
|
continue; |
|
state = (entry->wdata.led_state >> i) & 1; |
|
if (value == LED_OFF && state) { |
|
entry->wdata.led_state &= ~(1 << i); |
|
lg4ff_set_leds(hid, entry->wdata.led_state); |
|
} else if (value != LED_OFF && !state) { |
|
entry->wdata.led_state |= 1 << i; |
|
lg4ff_set_leds(hid, entry->wdata.led_state); |
|
} |
|
break; |
|
} |
|
} |
|
|
|
static enum led_brightness lg4ff_led_get_brightness(struct led_classdev *led_cdev) |
|
{ |
|
struct device *dev = led_cdev->dev->parent; |
|
struct hid_device *hid = to_hid_device(dev); |
|
struct lg_drv_data *drv_data = hid_get_drvdata(hid); |
|
struct lg4ff_device_entry *entry; |
|
int i, value = 0; |
|
|
|
if (!drv_data) { |
|
hid_err(hid, "Device data not found."); |
|
return LED_OFF; |
|
} |
|
|
|
entry = drv_data->device_props; |
|
|
|
if (!entry) { |
|
hid_err(hid, "Device properties not found."); |
|
return LED_OFF; |
|
} |
|
|
|
for (i = 0; i < 5; i++) |
|
if (led_cdev == entry->wdata.led[i]) { |
|
value = (entry->wdata.led_state >> i) & 1; |
|
break; |
|
} |
|
|
|
return value ? LED_FULL : LED_OFF; |
|
} |
|
#endif |
|
|
|
static u16 lg4ff_identify_multimode_wheel(struct hid_device *hid, const u16 reported_product_id, const u16 bcdDevice) |
|
{ |
|
u32 current_mode; |
|
int i; |
|
|
|
/* identify current mode from USB PID */ |
|
for (i = 1; i < ARRAY_SIZE(lg4ff_alternate_modes); i++) { |
|
dbg_hid("Testing whether PID is %X\n", lg4ff_alternate_modes[i].product_id); |
|
if (reported_product_id == lg4ff_alternate_modes[i].product_id) |
|
break; |
|
} |
|
|
|
if (i == ARRAY_SIZE(lg4ff_alternate_modes)) |
|
return 0; |
|
|
|
current_mode = BIT(i); |
|
|
|
for (i = 0; i < ARRAY_SIZE(lg4ff_main_checklist); i++) { |
|
const u16 mask = lg4ff_main_checklist[i]->mask; |
|
const u16 result = lg4ff_main_checklist[i]->result; |
|
const u16 real_product_id = lg4ff_main_checklist[i]->real_product_id; |
|
|
|
if ((current_mode & lg4ff_main_checklist[i]->modes) && \ |
|
(bcdDevice & mask) == result) { |
|
dbg_hid("Found wheel with real PID %X whose reported PID is %X\n", real_product_id, reported_product_id); |
|
return real_product_id; |
|
} |
|
} |
|
|
|
/* No match found. This is either Driving Force or an unknown |
|
* wheel model, do not touch it */ |
|
dbg_hid("Wheel with bcdDevice %X was not recognized as multimode wheel, leaving in its current mode\n", bcdDevice); |
|
return 0; |
|
} |
|
|
|
static int lg4ff_handle_multimode_wheel(struct hid_device *hid, u16 *real_product_id, const u16 bcdDevice) |
|
{ |
|
const u16 reported_product_id = hid->product; |
|
int ret; |
|
|
|
*real_product_id = lg4ff_identify_multimode_wheel(hid, reported_product_id, bcdDevice); |
|
/* Probed wheel is not a multimode wheel */ |
|
if (!*real_product_id) { |
|
*real_product_id = reported_product_id; |
|
dbg_hid("Wheel is not a multimode wheel\n"); |
|
return LG4FF_MMODE_NOT_MULTIMODE; |
|
} |
|
|
|
/* Switch from "Driving Force" mode to native mode automatically. |
|
* Otherwise keep the wheel in its current mode */ |
|
if (reported_product_id == USB_DEVICE_ID_LOGITECH_WHEEL && |
|
reported_product_id != *real_product_id && |
|
!lg4ff_no_autoswitch) { |
|
const struct lg4ff_compat_mode_switch *s = lg4ff_get_mode_switch_command(*real_product_id, *real_product_id); |
|
|
|
if (!s) { |
|
hid_err(hid, "Invalid product id %X\n", *real_product_id); |
|
return LG4FF_MMODE_NOT_MULTIMODE; |
|
} |
|
|
|
ret = lg4ff_switch_compatibility_mode(hid, s); |
|
if (ret) { |
|
/* Wheel could not have been switched to native mode, |
|
* leave it in "Driving Force" mode and continue */ |
|
hid_err(hid, "Unable to switch wheel mode, errno %d\n", ret); |
|
return LG4FF_MMODE_IS_MULTIMODE; |
|
} |
|
return LG4FF_MMODE_SWITCHED; |
|
} |
|
|
|
return LG4FF_MMODE_IS_MULTIMODE; |
|
} |
|
|
|
|
|
int lg4ff_init(struct hid_device *hid) |
|
{ |
|
struct hid_input *hidinput; |
|
struct input_dev *dev; |
|
struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
|
struct hid_report *report = list_entry(report_list->next, struct hid_report, list); |
|
const struct usb_device_descriptor *udesc = &(hid_to_usb_dev(hid)->descriptor); |
|
const u16 bcdDevice = le16_to_cpu(udesc->bcdDevice); |
|
const struct lg4ff_multimode_wheel *mmode_wheel = NULL; |
|
struct lg4ff_device_entry *entry; |
|
struct lg_drv_data *drv_data; |
|
int error, i, j; |
|
int mmode_ret, mmode_idx = -1; |
|
u16 real_product_id; |
|
|
|
if (list_empty(&hid->inputs)) { |
|
hid_err(hid, "no inputs found\n"); |
|
return -ENODEV; |
|
} |
|
hidinput = list_entry(hid->inputs.next, struct hid_input, list); |
|
dev = hidinput->input; |
|
|
|
/* Check that the report looks ok */ |
|
if (!hid_validate_values(hid, HID_OUTPUT_REPORT, 0, 0, 7)) |
|
return -1; |
|
|
|
drv_data = hid_get_drvdata(hid); |
|
if (!drv_data) { |
|
hid_err(hid, "Cannot add device, private driver data not allocated\n"); |
|
return -1; |
|
} |
|
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
|
if (!entry) |
|
return -ENOMEM; |
|
spin_lock_init(&entry->report_lock); |
|
entry->report = report; |
|
drv_data->device_props = entry; |
|
|
|
/* Check if a multimode wheel has been connected and |
|
* handle it appropriately */ |
|
mmode_ret = lg4ff_handle_multimode_wheel(hid, &real_product_id, bcdDevice); |
|
|
|
/* Wheel has been told to switch to native mode. There is no point in going on |
|
* with the initialization as the wheel will do a USB reset when it switches mode |
|
*/ |
|
if (mmode_ret == LG4FF_MMODE_SWITCHED) |
|
return 0; |
|
else if (mmode_ret < 0) { |
|
hid_err(hid, "Unable to switch device mode during initialization, errno %d\n", mmode_ret); |
|
error = mmode_ret; |
|
goto err_init; |
|
} |
|
|
|
/* Check what wheel has been connected */ |
|
for (i = 0; i < ARRAY_SIZE(lg4ff_devices); i++) { |
|
if (hid->product == lg4ff_devices[i].product_id) { |
|
dbg_hid("Found compatible device, product ID %04X\n", lg4ff_devices[i].product_id); |
|
break; |
|
} |
|
} |
|
|
|
if (i == ARRAY_SIZE(lg4ff_devices)) { |
|
hid_err(hid, "This device is flagged to be handled by the lg4ff module but this module does not know how to handle it. " |
|
"Please report this as a bug to LKML, Simon Wood <[email protected]> or " |
|
"Michal Maly <[email protected]>\n"); |
|
error = -1; |
|
goto err_init; |
|
} |
|
|
|
if (mmode_ret == LG4FF_MMODE_IS_MULTIMODE) { |
|
for (mmode_idx = 0; mmode_idx < ARRAY_SIZE(lg4ff_multimode_wheels); mmode_idx++) { |
|
if (real_product_id == lg4ff_multimode_wheels[mmode_idx].product_id) |
|
break; |
|
} |
|
|
|
if (mmode_idx == ARRAY_SIZE(lg4ff_multimode_wheels)) { |
|
hid_err(hid, "Device product ID %X is not listed as a multimode wheel", real_product_id); |
|
error = -1; |
|
goto err_init; |
|
} |
|
} |
|
|
|
/* Set supported force feedback capabilities */ |
|
for (j = 0; lg4ff_devices[i].ff_effects[j] >= 0; j++) |
|
set_bit(lg4ff_devices[i].ff_effects[j], dev->ffbit); |
|
|
|
error = input_ff_create_memless(dev, NULL, lg4ff_play); |
|
|
|
if (error) |
|
goto err_init; |
|
|
|
/* Initialize device properties */ |
|
if (mmode_ret == LG4FF_MMODE_IS_MULTIMODE) { |
|
BUG_ON(mmode_idx == -1); |
|
mmode_wheel = &lg4ff_multimode_wheels[mmode_idx]; |
|
} |
|
lg4ff_init_wheel_data(&entry->wdata, &lg4ff_devices[i], mmode_wheel, real_product_id); |
|
|
|
/* Check if autocentering is available and |
|
* set the centering force to zero by default */ |
|
if (test_bit(FF_AUTOCENTER, dev->ffbit)) { |
|
/* Formula Force EX expects different autocentering command */ |
|
if ((bcdDevice >> 8) == LG4FF_FFEX_REV_MAJ && |
|
(bcdDevice & 0xff) == LG4FF_FFEX_REV_MIN) |
|
dev->ff->set_autocenter = lg4ff_set_autocenter_ffex; |
|
else |
|
dev->ff->set_autocenter = lg4ff_set_autocenter_default; |
|
|
|
dev->ff->set_autocenter(dev, 0); |
|
} |
|
|
|
/* Create sysfs interface */ |
|
error = device_create_file(&hid->dev, &dev_attr_combine_pedals); |
|
if (error) |
|
hid_warn(hid, "Unable to create sysfs interface for \"combine\", errno %d\n", error); |
|
error = device_create_file(&hid->dev, &dev_attr_range); |
|
if (error) |
|
hid_warn(hid, "Unable to create sysfs interface for \"range\", errno %d\n", error); |
|
if (mmode_ret == LG4FF_MMODE_IS_MULTIMODE) { |
|
error = device_create_file(&hid->dev, &dev_attr_real_id); |
|
if (error) |
|
hid_warn(hid, "Unable to create sysfs interface for \"real_id\", errno %d\n", error); |
|
error = device_create_file(&hid->dev, &dev_attr_alternate_modes); |
|
if (error) |
|
hid_warn(hid, "Unable to create sysfs interface for \"alternate_modes\", errno %d\n", error); |
|
} |
|
dbg_hid("sysfs interface created\n"); |
|
|
|
/* Set the maximum range to start with */ |
|
entry->wdata.range = entry->wdata.max_range; |
|
if (entry->wdata.set_range) |
|
entry->wdata.set_range(hid, entry->wdata.range); |
|
|
|
#ifdef CONFIG_LEDS_CLASS |
|
/* register led subsystem - G27/G29 only */ |
|
entry->wdata.led_state = 0; |
|
for (j = 0; j < 5; j++) |
|
entry->wdata.led[j] = NULL; |
|
|
|
if (lg4ff_devices[i].product_id == USB_DEVICE_ID_LOGITECH_G27_WHEEL || |
|
lg4ff_devices[i].product_id == USB_DEVICE_ID_LOGITECH_G29_WHEEL) { |
|
struct led_classdev *led; |
|
size_t name_sz; |
|
char *name; |
|
|
|
lg4ff_set_leds(hid, 0); |
|
|
|
name_sz = strlen(dev_name(&hid->dev)) + 8; |
|
|
|
for (j = 0; j < 5; j++) { |
|
led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL); |
|
if (!led) { |
|
hid_err(hid, "can't allocate memory for LED %d\n", j); |
|
goto err_leds; |
|
} |
|
|
|
name = (void *)(&led[1]); |
|
snprintf(name, name_sz, "%s::RPM%d", dev_name(&hid->dev), j+1); |
|
led->name = name; |
|
led->brightness = 0; |
|
led->max_brightness = 1; |
|
led->brightness_get = lg4ff_led_get_brightness; |
|
led->brightness_set = lg4ff_led_set_brightness; |
|
|
|
entry->wdata.led[j] = led; |
|
error = led_classdev_register(&hid->dev, led); |
|
|
|
if (error) { |
|
hid_err(hid, "failed to register LED %d. Aborting.\n", j); |
|
err_leds: |
|
/* Deregister LEDs (if any) */ |
|
for (j = 0; j < 5; j++) { |
|
led = entry->wdata.led[j]; |
|
entry->wdata.led[j] = NULL; |
|
if (!led) |
|
continue; |
|
led_classdev_unregister(led); |
|
kfree(led); |
|
} |
|
goto out; /* Let the driver continue without LEDs */ |
|
} |
|
} |
|
} |
|
out: |
|
#endif |
|
hid_info(hid, "Force feedback support for Logitech Gaming Wheels\n"); |
|
return 0; |
|
|
|
err_init: |
|
drv_data->device_props = NULL; |
|
kfree(entry); |
|
return error; |
|
} |
|
|
|
int lg4ff_deinit(struct hid_device *hid) |
|
{ |
|
struct lg4ff_device_entry *entry; |
|
struct lg_drv_data *drv_data; |
|
|
|
drv_data = hid_get_drvdata(hid); |
|
if (!drv_data) { |
|
hid_err(hid, "Error while deinitializing device, no private driver data.\n"); |
|
return -1; |
|
} |
|
entry = drv_data->device_props; |
|
if (!entry) |
|
goto out; /* Nothing more to do */ |
|
|
|
/* Multimode devices will have at least the "MODE_NATIVE" bit set */ |
|
if (entry->wdata.alternate_modes) { |
|
device_remove_file(&hid->dev, &dev_attr_real_id); |
|
device_remove_file(&hid->dev, &dev_attr_alternate_modes); |
|
} |
|
|
|
device_remove_file(&hid->dev, &dev_attr_combine_pedals); |
|
device_remove_file(&hid->dev, &dev_attr_range); |
|
#ifdef CONFIG_LEDS_CLASS |
|
{ |
|
int j; |
|
struct led_classdev *led; |
|
|
|
/* Deregister LEDs (if any) */ |
|
for (j = 0; j < 5; j++) { |
|
|
|
led = entry->wdata.led[j]; |
|
entry->wdata.led[j] = NULL; |
|
if (!led) |
|
continue; |
|
led_classdev_unregister(led); |
|
kfree(led); |
|
} |
|
} |
|
#endif |
|
drv_data->device_props = NULL; |
|
|
|
kfree(entry); |
|
out: |
|
dbg_hid("Device successfully unregistered\n"); |
|
return 0; |
|
}
|
|
|