| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Michal Malý | 5013 | 68.88% | 23 | 48.94% |
| Simon Wood | 2230 | 30.64% | 16 | 34.04% |
| Benjamin Tissoires | 16 | 0.22% | 1 | 2.13% |
| Kees Cook | 7 | 0.10% | 1 | 2.13% |
| Vivien Didelot | 4 | 0.05% | 1 | 2.13% |
| Dan Carpenter | 3 | 0.04% | 2 | 4.26% |
| Jiri Kosina | 2 | 0.03% | 1 | 2.13% |
| Geliang Tang | 2 | 0.03% | 1 | 2.13% |
| Joe Perches | 1 | 0.01% | 1 | 2.13% |
| Total | 7278 | 47 |
/* * Force feedback support for Logitech Gaming Wheels * * Including G27, G25, DFP, DFGT, FFEX, Momo, Momo2 & * Speed Force Wireless (WiiWheel) * * Copyright (c) 2010 Simon Wood <simon@mungewell.org> */ /* * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #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 0 #define LG4FF_MMODE_SWITCHED 1 #define LG4FF_MMODE_NOT_MULTIMODE 2 #define LG4FF_MODE_NATIVE_IDX 0 #define LG4FF_MODE_DFEX_IDX 1 #define LG4FF_MODE_DFP_IDX 2 #define LG4FF_MODE_G25_IDX 3 #define LG4FF_MODE_DFGT_IDX 4 #define LG4FF_MODE_G27_IDX 5 #define LG4FF_MODE_G29_IDX 6 #define LG4FF_MODE_MAX_IDX 7 #define LG4FF_MODE_NATIVE BIT(LG4FF_MODE_NATIVE_IDX) #define LG4FF_MODE_DFEX BIT(LG4FF_MODE_DFEX_IDX) #define LG4FF_MODE_DFP BIT(LG4FF_MODE_DFP_IDX) #define LG4FF_MODE_G25 BIT(LG4FF_MODE_G25_IDX) #define LG4FF_MODE_DFGT BIT(LG4FF_MODE_DFGT_IDX) #define LG4FF_MODE_G27 BIT(LG4FF_MODE_G27_IDX) #define LG4FF_MODE_G29 BIT(LG4FF_MODE_G29_IDX) #define LG4FF_DFEX_TAG "DF-EX" #define LG4FF_DFEX_NAME "Driving Force / Formula EX" #define LG4FF_DFP_TAG "DFP" #define LG4FF_DFP_NAME "Driving Force Pro" #define LG4FF_G25_TAG "G25" #define LG4FF_G25_NAME "G25 Racing Wheel" #define LG4FF_G27_TAG "G27" #define LG4FF_G27_NAME "G27 Racing Wheel" #define LG4FF_G29_TAG "G29" #define LG4FF_G29_NAME "G29 Racing Wheel" #define LG4FF_DFGT_TAG "DFGT" #define LG4FF_DFGT_NAME "Driving Force GT" #define LG4FF_FFEX_REV_MAJ 0x21 #define LG4FF_FFEX_REV_MIN 0x00 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 { const u32 product_id; u16 combine; u16 range; const u16 min_range; const u16 max_range; #ifdef CONFIG_LEDS_CLASS u8 led_state; struct led_classdev *led[5]; #endif const u32 alternate_modes; const char * const real_tag; const char * const real_name; const u16 real_product_id; void (*set_range)(struct hid_device *hid, u16 range); }; struct lg4ff_device_entry { spinlock_t report_lock; /* Protect output HID report */ struct hid_report *report; struct lg4ff_wheel_data wdata; }; static const signed short lg4ff_wheel_effects[] = { FF_CONSTANT, FF_AUTOCENTER, -1 }; struct lg4ff_wheel { const u32 product_id; const signed short *ff_effects; const u16 min_range; const u16 max_range; void (*set_range)(struct hid_device *hid, u16 range); }; struct lg4ff_compat_mode_switch { const u8 cmd_count; /* Number of commands to send */ const u8 cmd[]; }; struct lg4ff_wheel_ident_info { const u32 modes; const u16 mask; const u16 result; const u16 real_product_id; }; struct lg4ff_multimode_wheel { const u16 product_id; const u32 alternate_modes; const char *real_tag; const char *real_name; }; struct lg4ff_alternate_mode { const u16 product_id; const char *tag; const char *name; }; static const struct lg4ff_wheel lg4ff_devices[] = { {USB_DEVICE_ID_LOGITECH_WINGMAN_FFG, lg4ff_wheel_effects, 40, 180, NULL}, {USB_DEVICE_ID_LOGITECH_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_dfp}, {USB_DEVICE_ID_LOGITECH_G25_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, {USB_DEVICE_ID_LOGITECH_G27_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, {USB_DEVICE_ID_LOGITECH_G29_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2, lg4ff_wheel_effects, 40, 270, NULL}, {USB_DEVICE_ID_LOGITECH_WII_WHEEL, lg4ff_wheel_effects, 40, 270, NULL} }; static const struct lg4ff_multimode_wheel lg4ff_multimode_wheels[] = { {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, LG4FF_MODE_NATIVE | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, LG4FF_DFP_TAG, LG4FF_DFP_NAME}, {USB_DEVICE_ID_LOGITECH_G25_WHEEL, LG4FF_MODE_NATIVE | LG4FF_MODE_G25 | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, LG4FF_G25_TAG, LG4FF_G25_NAME}, {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, LG4FF_MODE_NATIVE | LG4FF_MODE_DFGT | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, LG4FF_DFGT_TAG, LG4FF_DFGT_NAME}, {USB_DEVICE_ID_LOGITECH_G27_WHEEL, LG4FF_MODE_NATIVE | LG4FF_MODE_G27 | LG4FF_MODE_G25 | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, LG4FF_G27_TAG, LG4FF_G27_NAME}, {USB_DEVICE_ID_LOGITECH_G29_WHEEL, LG4FF_MODE_NATIVE | LG4FF_MODE_G29 | LG4FF_MODE_G27 | LG4FF_MODE_G25 | LG4FF_MODE_DFGT | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, LG4FF_G29_TAG, LG4FF_G29_NAME}, }; static const struct lg4ff_alternate_mode lg4ff_alternate_modes[] = { [LG4FF_MODE_NATIVE_IDX] = {0, "native", ""}, [LG4FF_MODE_DFEX_IDX] = {USB_DEVICE_ID_LOGITECH_WHEEL, LG4FF_DFEX_TAG, LG4FF_DFEX_NAME}, [LG4FF_MODE_DFP_IDX] = {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, LG4FF_DFP_TAG, LG4FF_DFP_NAME}, [LG4FF_MODE_G25_IDX] = {USB_DEVICE_ID_LOGITECH_G25_WHEEL, LG4FF_G25_TAG, LG4FF_G25_NAME}, [LG4FF_MODE_DFGT_IDX] = {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, LG4FF_DFGT_TAG, LG4FF_DFGT_NAME}, [LG4FF_MODE_G27_IDX] = {USB_DEVICE_ID_LOGITECH_G27_WHEEL, LG4FF_G27_TAG, LG4FF_G27_NAME}, [LG4FF_MODE_G29_IDX] = {USB_DEVICE_ID_LOGITECH_G29_WHEEL, LG4FF_G29_TAG, LG4FF_G29_NAME}, }; /* Multimode wheel identificators */ static const struct lg4ff_wheel_ident_info lg4ff_dfp_ident_info = { LG4FF_MODE_DFP | LG4FF_MODE_DFEX, 0xf000, 0x1000, USB_DEVICE_ID_LOGITECH_DFP_WHEEL }; static const struct lg4ff_wheel_ident_info lg4ff_g25_ident_info = { LG4FF_MODE_G25 | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, 0xff00, 0x1200, USB_DEVICE_ID_LOGITECH_G25_WHEEL }; static const struct lg4ff_wheel_ident_info lg4ff_g27_ident_info = { LG4FF_MODE_G27 | LG4FF_MODE_G25 | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, 0xfff0, 0x1230, USB_DEVICE_ID_LOGITECH_G27_WHEEL }; static const struct lg4ff_wheel_ident_info lg4ff_dfgt_ident_info = { LG4FF_MODE_DFGT | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, 0xff00, 0x1300, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL }; static const struct lg4ff_wheel_ident_info lg4ff_g29_ident_info = { LG4FF_MODE_G29 | LG4FF_MODE_G27 | LG4FF_MODE_G25 | LG4FF_MODE_DFGT | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, 0xfff8, 0x1350, USB_DEVICE_ID_LOGITECH_G29_WHEEL }; static const struct lg4ff_wheel_ident_info lg4ff_g29_ident_info2 = { LG4FF_MODE_G29 | LG4FF_MODE_G27 | LG4FF_MODE_G25 | LG4FF_MODE_DFGT | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, 0xff00, 0x8900, USB_DEVICE_ID_LOGITECH_G29_WHEEL }; /* Multimode wheel identification checklists */ static const struct lg4ff_wheel_ident_info *lg4ff_main_checklist[] = { &lg4ff_g29_ident_info, &lg4ff_g29_ident_info2, &lg4ff_dfgt_ident_info, &lg4ff_g27_ident_info, &lg4ff_g25_ident_info, &lg4ff_dfp_ident_info }; /* Compatibility mode switching commands */ /* EXT_CMD9 - Understood by G27 and DFGT */ static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfex = { 2, {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ 0xf8, 0x09, 0x00, 0x01, 0x00, 0x00, 0x00} /* Switch mode to DF-EX with detach */ }; static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfp = { 2, {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ 0xf8, 0x09, 0x01, 0x01, 0x00, 0x00, 0x00} /* Switch mode to DFP with detach */ }; static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_g25 = { 2, {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ 0xf8, 0x09, 0x02, 0x01, 0x00, 0x00, 0x00} /* Switch mode to G25 with detach */ }; static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfgt = { 2, {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ 0xf8, 0x09, 0x03, 0x01, 0x00, 0x00, 0x00} /* Switch mode to DFGT with detach */ }; static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_g27 = { 2, {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ 0xf8, 0x09, 0x04, 0x01, 0x00, 0x00, 0x00} /* Switch mode to G27 with detach */ }; static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_g29 = { 2, {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ 0xf8, 0x09, 0x05, 0x01, 0x01, 0x00, 0x00} /* Switch mode to G29 with detach */ }; /* EXT_CMD1 - Understood by DFP, G25, G27 and DFGT */ static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext01_dfp = { 1, {0xf8, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00} }; /* EXT_CMD16 - Understood by G25 and G27 */ static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext16_g25 = { 1, {0xf8, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00} }; /* Recalculates X axis value accordingly to currently selected range */ static s32 lg4ff_adjust_dfp_x_axis(s32 value, u16 range) { u16 max_range; s32 new_value; if (range == 900) return value; else if (range == 200) return value; else if (range < 200) max_range = 200; else max_range = 900; new_value = 8192 + mult_frac(value - 8192, max_range, range); if (new_value < 0) return 0; else if (new_value > 16383) return 16383; else return new_value; } 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) { struct lg4ff_device_entry *entry = drv_data->device_props; s32 new_value = 0; if (!entry) { hid_err(hid, "Device properties not found"); return 0; } switch (entry->wdata.product_id) { case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: switch (usage->code) { case ABS_X: new_value = lg4ff_adjust_dfp_x_axis(value, entry->wdata.range); input_event(field->hidinput->input, usage->type, usage->code, new_value); return 1; default: return 0; } default: return 0; } } int lg4ff_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *rd, int size, struct lg_drv_data *drv_data) { int offset; struct lg4ff_device_entry *entry = drv_data->device_props; if (!entry) return 0; /* adjust HID report present combined pedals data */ if (entry->wdata.combine) { switch (entry->wdata.product_id) { case USB_DEVICE_ID_LOGITECH_WHEEL: rd[5] = rd[3]; rd[6] = 0x7F; return 1; case USB_DEVICE_ID_LOGITECH_WINGMAN_FFG: case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL: case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2: rd[4] = rd[3]; rd[5] = 0x7F; return 1; case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: rd[5] = rd[4]; rd[6] = 0x7F; return 1; case USB_DEVICE_ID_LOGITECH_G25_WHEEL: case USB_DEVICE_ID_LOGITECH_G27_WHEEL: offset = 5; break; case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL: case USB_DEVICE_ID_LOGITECH_G29_WHEEL: offset = 6; break; case USB_DEVICE_ID_LOGITECH_WII_WHEEL: offset = 3; break; default: return 0; } /* Compute a combined axis when wheel does not supply it */ rd[offset] = (0xFF + rd[offset] - rd[offset+1]) >> 1; rd[offset+1] = 0x7F; return 1; } return 0; } 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) { u32 alternate_modes = 0; const char *real_tag = NULL; const char *real_name = NULL; if (mmode_wheel) { alternate_modes = mmode_wheel->alternate_modes; real_tag = mmode_wheel->real_tag; real_name = mmode_wheel->real_name; } { struct lg4ff_wheel_data t_wdata = { .product_id = wheel->product_id, .real_product_id = real_product_id, .combine = 0, .min_range = wheel->min_range, .max_range = wheel->max_range, .set_range = wheel->set_range, .alternate_modes = alternate_modes, .real_tag = real_tag, .real_name = real_name }; memcpy(wdata, &t_wdata, sizeof(t_wdata)); } } static int lg4ff_play(struct input_dev *dev, void *data, struct ff_effect *effect) { struct hid_device *hid = input_get_drvdata(dev); struct lg4ff_device_entry *entry; struct lg_drv_data *drv_data; unsigned long flags; s32 *value; int x; 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; #define CLAMP(x) do { if (x < 0) x = 0; else if (x > 0xff) x = 0xff; } while (0) switch (effect->type) { case FF_CONSTANT: x = effect->u.ramp.start_level + 0x80; /* 0x80 is no force */ CLAMP(x); spin_lock_irqsave(&entry->report_lock, flags); if (x == 0x80) { /* De-activate force in slot-1*/ value[0] = 0x13; 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 0; } value[0] = 0x11; /* Slot 1 */ value[1] = 0x08; value[2] = x; value[3] = 0x80; 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); 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 = list_entry(hid->inputs.next, struct hid_input, list); struct input_dev *dev = hidinput->input; 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; /* 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 <simon@mungewell.org> or " "Michal Maly <madcatxster@devoid-pointer.net>\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 hid_hw_stop(hid); drv_data->device_props = NULL; kfree(entry); out: dbg_hid("Device successfully unregistered\n"); return 0; }
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