diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/hid/hid-lg3ff.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/hid/hid-lg3ff.c | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/ANDROID_3.4.5/drivers/hid/hid-lg3ff.c b/ANDROID_3.4.5/drivers/hid/hid-lg3ff.c deleted file mode 100644 index f98644c2..00000000 --- a/ANDROID_3.4.5/drivers/hid/hid-lg3ff.c +++ /dev/null @@ -1,175 +0,0 @@ -/* - * Force feedback support for Logitech Flight System G940 - * - * Copyright (c) 2009 Gary Stein <LordCnidarian@gmail.com> - */ - -/* - * 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" - -/* - * G940 Theory of Operation (from experimentation) - * - * There are 63 fields (only 3 of them currently used) - * 0 - seems to be command field - * 1 - 30 deal with the x axis - * 31 -60 deal with the y axis - * - * Field 1 is x axis constant force - * Field 31 is y axis constant force - * - * other interesting fields 1,2,3,4 on x axis - * (same for 31,32,33,34 on y axis) - * - * 0 0 127 127 makes the joystick autocenter hard - * - * 127 0 127 127 makes the joystick loose on the right, - * but stops all movemnt left - * - * -127 0 -127 -127 makes the joystick loose on the left, - * but stops all movement right - * - * 0 0 -127 -127 makes the joystick rattle very hard - * - * I'm sure these are effects that I don't know enough about them - */ - -struct lg3ff_device { - struct hid_report *report; -}; - -static int hid_lg3ff_play(struct input_dev *dev, void *data, - struct ff_effect *effect) -{ - struct hid_device *hid = input_get_drvdata(dev); - struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; - struct hid_report *report = list_entry(report_list->next, struct hid_report, list); - int x, y; - -/* - * Maxusage should always be 63 (maximum fields) - * likely a better way to ensure this data is clean - */ - memset(report->field[0]->value, 0, sizeof(__s32)*report->field[0]->maxusage); - - switch (effect->type) { - case FF_CONSTANT: -/* - * Already clamped in ff_memless - * 0 is center (different then other logitech) - */ - x = effect->u.ramp.start_level; - y = effect->u.ramp.end_level; - - /* send command byte */ - report->field[0]->value[0] = 0x51; - -/* - * Sign backwards from other Force3d pro - * which get recast here in two's complement 8 bits - */ - report->field[0]->value[1] = (unsigned char)(-x); - report->field[0]->value[31] = (unsigned char)(-y); - - usbhid_submit_report(hid, report, USB_DIR_OUT); - break; - } - return 0; -} -static void hid_lg3ff_set_autocenter(struct input_dev *dev, u16 magnitude) -{ - struct hid_device *hid = input_get_drvdata(dev); - struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; - struct hid_report *report = list_entry(report_list->next, struct hid_report, list); - -/* - * Auto Centering probed from device - * NOTE: deadman's switch on G940 must be covered - * for effects to work - */ - report->field[0]->value[0] = 0x51; - report->field[0]->value[1] = 0x00; - report->field[0]->value[2] = 0x00; - report->field[0]->value[3] = 0x7F; - report->field[0]->value[4] = 0x7F; - report->field[0]->value[31] = 0x00; - report->field[0]->value[32] = 0x00; - report->field[0]->value[33] = 0x7F; - report->field[0]->value[34] = 0x7F; - - usbhid_submit_report(hid, report, USB_DIR_OUT); -} - - -static const signed short ff3_joystick_ac[] = { - FF_CONSTANT, - FF_AUTOCENTER, - -1 -}; - -int lg3ff_init(struct hid_device *hid) -{ - struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); - struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; - struct input_dev *dev = hidinput->input; - struct hid_report *report; - struct hid_field *field; - const signed short *ff_bits = ff3_joystick_ac; - int error; - int i; - - /* Find the report to use */ - if (list_empty(report_list)) { - hid_err(hid, "No output report found\n"); - return -1; - } - - /* Check that the report looks ok */ - report = list_entry(report_list->next, struct hid_report, list); - if (!report) { - hid_err(hid, "NULL output report\n"); - return -1; - } - - field = report->field[0]; - if (!field) { - hid_err(hid, "NULL field\n"); - return -1; - } - - /* Assume single fixed device G940 */ - for (i = 0; ff_bits[i] >= 0; i++) - set_bit(ff_bits[i], dev->ffbit); - - error = input_ff_create_memless(dev, NULL, hid_lg3ff_play); - if (error) - return error; - - if (test_bit(FF_AUTOCENTER, dev->ffbit)) - dev->ff->set_autocenter = hid_lg3ff_set_autocenter; - - hid_info(hid, "Force feedback for Logitech Flight System G940 by Gary Stein <LordCnidarian@gmail.com>\n"); - return 0; -} - |