1 // SPDX-License-Identifier: GPL-2.0-or-later
15 #include "hid-lg.h"
21  * 0 - seems to be command field
22  * 1 - 30 deal with the x axis
23  * 31 -60 deal with the y axis
25  * Field 1 is x axis constant force
26  * Field 31 is y axis constant force
28  * other interesting fields 1,2,3,4 on x axis
29  * (same for 31,32,33,34 on y axis)
36  * -127 0 -127 -127 makes the joystick loose on the left,
39  * 0 0 -127 -127 makes the joystick rattle very hard
52 	struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;  in hid_lg3ff_play()
53 	struct hid_report *report = list_entry(report_list->next, struct hid_report, list);  in hid_lg3ff_play()
54 	int x, y;  in hid_lg3ff_play()  local
60 	memset(report->field[0]->value, 0,  in hid_lg3ff_play()
61 	       sizeof(__s32) * report->field[0]->report_count);  in hid_lg3ff_play()
63 	switch (effect->type) {  in hid_lg3ff_play()
69 		x = effect->u.ramp.start_level;  in hid_lg3ff_play()
70 		y = effect->u.ramp.end_level;  in hid_lg3ff_play()
73 		report->field[0]->value[0] = 0x51;  in hid_lg3ff_play()
79 		report->field[0]->value[1] = (unsigned char)(-x);  in hid_lg3ff_play()
80 		report->field[0]->value[31] = (unsigned char)(-y);  in hid_lg3ff_play()
90 	struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;  in hid_lg3ff_set_autocenter()
91 	struct hid_report *report = list_entry(report_list->next, struct hid_report, list);  in hid_lg3ff_set_autocenter()
98 	report->field[0]->value[0] = 0x51;  in hid_lg3ff_set_autocenter()
99 	report->field[0]->value[1] = 0x00;  in hid_lg3ff_set_autocenter()
100 	report->field[0]->value[2] = 0x00;  in hid_lg3ff_set_autocenter()
101 	report->field[0]->value[3] = 0x7F;  in hid_lg3ff_set_autocenter()
102 	report->field[0]->value[4] = 0x7F;  in hid_lg3ff_set_autocenter()
103 	report->field[0]->value[31] = 0x00;  in hid_lg3ff_set_autocenter()
104 	report->field[0]->value[32] = 0x00;  in hid_lg3ff_set_autocenter()
105 	report->field[0]->value[33] = 0x7F;  in hid_lg3ff_set_autocenter()
106 	report->field[0]->value[34] = 0x7F;  in hid_lg3ff_set_autocenter()
115 	-1
126 	if (list_empty(&hid->inputs)) {  in lg3ff_init()
128 		return -ENODEV;  in lg3ff_init()
130 	hidinput = list_entry(hid->inputs.next, struct hid_input, list);  in lg3ff_init()
131 	dev = hidinput->input;  in lg3ff_init()
135 		return -ENODEV;  in lg3ff_init()
139 		set_bit(ff_bits[i], dev->ffbit);  in lg3ff_init()
145 	if (test_bit(FF_AUTOCENTER, dev->ffbit))  in lg3ff_init()
146 		dev->ff->set_autocenter = hid_lg3ff_set_autocenter;  in lg3ff_init()