1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  Copyright (c) 1999-2001 Vojtech Pavlik
10 #include <linux/delay.h>
44 	struct input_dev *dev = sermouse->dev;  in sermouse_process_msc()
45 	signed char *buf = sermouse->buf;  in sermouse_process_msc()
47 	switch (sermouse->count) {  in sermouse_process_msc()
60 			input_report_rel(dev, REL_Y, -buf[1]);  in sermouse_process_msc()
61 			buf[0] = data - data / 2;  in sermouse_process_msc()
67 			input_report_rel(dev, REL_Y, buf[1] - data);  in sermouse_process_msc()
74 	if (++sermouse->count == 5)  in sermouse_process_msc()
75 		sermouse->count = 0;  in sermouse_process_msc()
81  * standard 3-byte packets and 1200 bps.
86 	struct input_dev *dev = sermouse->dev;  in sermouse_process_ms()
87 	signed char *buf = sermouse->buf;  in sermouse_process_ms()
90 		sermouse->count = 0;  in sermouse_process_ms()
91 	else if (sermouse->count == 0)  in sermouse_process_ms()
94 	switch (sermouse->count) {  in sermouse_process_ms()
107 			buf[3] = data - data / 2;  in sermouse_process_ms()
111 			/* Guessing the state of the middle button on 3-button MS-protocol mice - ugly. */  in sermouse_process_ms()
112 			if ((sermouse->type == SERIO_MS) && !data && !buf[2] && !((buf[0] & 0xf0) ^ buf[1]))  in sermouse_process_ms()
113 				input_report_key(dev, BTN_MIDDLE, !test_bit(BTN_MIDDLE, dev->key));  in sermouse_process_ms()
118 			input_report_rel(dev, REL_Y, data - buf[4]);  in sermouse_process_ms()
124 			switch (sermouse->type) {  in sermouse_process_ms()
127 					sermouse->type = SERIO_MP;  in sermouse_process_ms()
143 					input_report_rel(dev, REL_WHEEL,  (data & 8) - (data & 7));  in sermouse_process_ms()
150 		case 6:	/* MZ++ packet type. We can get these bytes for M++ too but we ignore them later. */  in sermouse_process_ms()
156 			if (sermouse->type != SERIO_MZPP)  in sermouse_process_ms()
161 				case 1: /* Extra mouse info */  in sermouse_process_ms()
165 					input_report_rel(dev, data & 0x80 ? REL_HWHEEL : REL_WHEEL, (data & 7) - (data & 8));  in sermouse_process_ms()
169 				default: /* We don't decode anything else yet. */  in sermouse_process_ms()
181 	sermouse->count++;  in sermouse_process_ms()
194 	if (time_after(jiffies, sermouse->last + HZ/10))  in sermouse_interrupt()
195 		sermouse->count = 0;  in sermouse_interrupt()
197 	sermouse->last = jiffies;  in sermouse_interrupt()
199 	if (sermouse->type > SERIO_SUN)  in sermouse_interrupt()
208  * sermouse_disconnect() cleans up after we don't want talk
218 	input_unregister_device(sermouse->dev);  in sermouse_disconnect()
231 	unsigned char c = serio->id.extra;  in sermouse_connect()
232 	int err = -ENOMEM;  in sermouse_connect()
239 	sermouse->dev = input_dev;  in sermouse_connect()
240 	snprintf(sermouse->phys, sizeof(sermouse->phys), "%s/input0", serio->phys);  in sermouse_connect()
241 	sermouse->type = serio->id.proto;  in sermouse_connect()
243 	input_dev->name = sermouse_protocols[sermouse->type];  in sermouse_connect()
244 	input_dev->phys = sermouse->phys;  in sermouse_connect()
245 	input_dev->id.bustype = BUS_RS232;  in sermouse_connect()
246 	input_dev->id.vendor  = sermouse->type;  in sermouse_connect()
247 	input_dev->id.product = c;  in sermouse_connect()
248 	input_dev->id.version = 0x0100;  in sermouse_connect()
249 	input_dev->dev.parent = &serio->dev;  in sermouse_connect()
251 	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);  in sermouse_connect()
252 	input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |  in sermouse_connect()
254 	input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);  in sermouse_connect()
256 	if (c & 0x01) set_bit(BTN_MIDDLE, input_dev->keybit);  in sermouse_connect()
257 	if (c & 0x02) set_bit(BTN_SIDE, input_dev->keybit);  in sermouse_connect()
258 	if (c & 0x04) set_bit(BTN_EXTRA, input_dev->keybit);  in sermouse_connect()
259 	if (c & 0x10) set_bit(REL_WHEEL, input_dev->relbit);  in sermouse_connect()
260 	if (c & 0x20) set_bit(REL_HWHEEL, input_dev->relbit);  in sermouse_connect()
268 	err = input_register_device(sermouse->dev);  in sermouse_connect()
286 		.extra	= SERIO_ANY,
292 		.extra	= SERIO_ANY,
298 		.extra	= SERIO_ANY,
304 		.extra	= SERIO_ANY,
310 		.extra	= SERIO_ANY,
316 		.extra	= SERIO_ANY,
322 		.extra	= SERIO_ANY,