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![Colin Ian King](/assets/img/avatar_default.png)
The pointer value is being assigned a value and this is never read, and later on it is being assigned a new value. This the first assignment is redundant and can be removed and hence also the variables report and report_list. Cleans up the clang warning: Value stored to 'value' during its initialization is never read Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
1493 lines
42 KiB
C
1493 lines
42 KiB
C
/*
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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 <simon@mungewell.org>
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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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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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_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_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,
|
|
.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;
|
|
}
|