1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  Copyright (c) 1999-2001 Vojtech Pavlik
13 #include <linux/delay.h>
47 	struct input_dev *dev = sermouse->dev;  in sermouse_process_msc()
48 	signed char *buf = sermouse->buf;  in sermouse_process_msc()
50 	switch (sermouse->count) {  in sermouse_process_msc()
63 			input_report_rel(dev, REL_Y, -buf[1]);  in sermouse_process_msc()
64 			buf[0] = data - data / 2;  in sermouse_process_msc()
70 			input_report_rel(dev, REL_Y, buf[1] - data);  in sermouse_process_msc()
77 	if (++sermouse->count == 5)  in sermouse_process_msc()
78 		sermouse->count = 0;  in sermouse_process_msc()
84  * standard 3-byte packets and 1200 bps.
89 	struct input_dev *dev = sermouse->dev;  in sermouse_process_ms()
90 	signed char *buf = sermouse->buf;  in sermouse_process_ms()
93 		sermouse->count = 0;  in sermouse_process_ms()
94 	else if (sermouse->count == 0)  in sermouse_process_ms()
97 	switch (sermouse->count) {  in sermouse_process_ms()
110 			buf[3] = data - data / 2;  in sermouse_process_ms()
114 			/* Guessing the state of the middle button on 3-button MS-protocol mice - ugly. */  in sermouse_process_ms()
115 			if ((sermouse->type == SERIO_MS) && !data && !buf[2] && !((buf[0] & 0xf0) ^ buf[1]))  in sermouse_process_ms()
116 				input_report_key(dev, BTN_MIDDLE, !test_bit(BTN_MIDDLE, dev->key));  in sermouse_process_ms()
121 			input_report_rel(dev, REL_Y, data - buf[4]);  in sermouse_process_ms()
127 			switch (sermouse->type) {  in sermouse_process_ms()
130 					sermouse->type = SERIO_MP;  in sermouse_process_ms()
146 					input_report_rel(dev, REL_WHEEL,  (data & 8) - (data & 7));  in sermouse_process_ms()
153 		case 6:	/* MZ++ packet type. We can get these bytes for M++ too but we ignore them later. */  in sermouse_process_ms()
159 			if (sermouse->type != SERIO_MZPP)  in sermouse_process_ms()
164 				case 1: /* Extra mouse info */  in sermouse_process_ms()
168 					input_report_rel(dev, data & 0x80 ? REL_HWHEEL : REL_WHEEL, (data & 7) - (data & 8));  in sermouse_process_ms()
172 				default: /* We don't decode anything else yet. */  in sermouse_process_ms()
184 	sermouse->count++;  in sermouse_process_ms()
197 	if (time_after(jiffies, sermouse->last + HZ/10))  in sermouse_interrupt()
198 		sermouse->count = 0;  in sermouse_interrupt()
200 	sermouse->last = jiffies;  in sermouse_interrupt()
202 	if (sermouse->type > SERIO_SUN)  in sermouse_interrupt()
211  * sermouse_disconnect() cleans up after we don't want talk
221 	input_unregister_device(sermouse->dev);  in sermouse_disconnect()
234 	unsigned char c = serio->id.extra;  in sermouse_connect()
235 	int err = -ENOMEM;  in sermouse_connect()
242 	sermouse->dev = input_dev;  in sermouse_connect()
243 	snprintf(sermouse->phys, sizeof(sermouse->phys), "%s/input0", serio->phys);  in sermouse_connect()
244 	sermouse->type = serio->id.proto;  in sermouse_connect()
246 	input_dev->name = sermouse_protocols[sermouse->type];  in sermouse_connect()
247 	input_dev->phys = sermouse->phys;  in sermouse_connect()
248 	input_dev->id.bustype = BUS_RS232;  in sermouse_connect()
249 	input_dev->id.vendor  = sermouse->type;  in sermouse_connect()
250 	input_dev->id.product = c;  in sermouse_connect()
251 	input_dev->id.version = 0x0100;  in sermouse_connect()
252 	input_dev->dev.parent = &serio->dev;  in sermouse_connect()
254 	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);  in sermouse_connect()
255 	input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |  in sermouse_connect()
257 	input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);  in sermouse_connect()
259 	if (c & 0x01) set_bit(BTN_MIDDLE, input_dev->keybit);  in sermouse_connect()
260 	if (c & 0x02) set_bit(BTN_SIDE, input_dev->keybit);  in sermouse_connect()
261 	if (c & 0x04) set_bit(BTN_EXTRA, input_dev->keybit);  in sermouse_connect()
262 	if (c & 0x10) set_bit(REL_WHEEL, input_dev->relbit);  in sermouse_connect()
263 	if (c & 0x20) set_bit(REL_HWHEEL, input_dev->relbit);  in sermouse_connect()
271 	err = input_register_device(sermouse->dev);  in sermouse_connect()
289 		.extra	= SERIO_ANY,
295 		.extra	= SERIO_ANY,
301 		.extra	= SERIO_ANY,
307 		.extra	= SERIO_ANY,
313 		.extra	= SERIO_ANY,
319 		.extra	= SERIO_ANY,
325 		.extra	= SERIO_ANY,