xref: /openbmc/linux/drivers/input/mouse/lifebook.c (revision 22246614)
1 /*
2  * Fujitsu B-series Lifebook PS/2 TouchScreen driver
3  *
4  * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
5  * Copyright (c) 2005 Kenan Esau <kenan.esau@conan.de>
6  *
7  * TouchScreen detection, absolute mode setting and packet layout is taken from
8  * Harald Hoyer's description of the device.
9  *
10  * This program is free software; you can redistribute it and/or modify it
11  * under the terms of the GNU General Public License version 2 as published by
12  * the Free Software Foundation.
13  */
14 
15 #include <linux/input.h>
16 #include <linux/serio.h>
17 #include <linux/libps2.h>
18 #include <linux/dmi.h>
19 
20 #include "psmouse.h"
21 #include "lifebook.h"
22 
23 struct lifebook_data {
24 	struct input_dev *dev2;		/* Relative device */
25 	char phys[32];
26 };
27 
28 static const char *desired_serio_phys;
29 
30 static int lifebook_set_serio_phys(const struct dmi_system_id *d)
31 {
32 	desired_serio_phys = d->driver_data;
33 	return 0;
34 }
35 
36 static unsigned char lifebook_use_6byte_proto;
37 
38 static int lifebook_set_6byte_proto(const struct dmi_system_id *d)
39 {
40 	lifebook_use_6byte_proto = 1;
41 	return 0;
42 }
43 
44 static const struct dmi_system_id lifebook_dmi_table[] = {
45 	{
46 		.ident = "FLORA-ie 55mi",
47 		.matches = {
48 			DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"),
49 		},
50 	},
51 	{
52 		.ident = "LifeBook B",
53 		.matches = {
54 			DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"),
55 		},
56 	},
57 	{
58 		.ident = "Lifebook B",
59 		.matches = {
60 			DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
61 		},
62 	},
63 	{
64 		.ident = "Lifebook B213x/B2150",
65 		.matches = {
66 			DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"),
67 		},
68 	},
69 	{
70 		.ident = "Zephyr",
71 		.matches = {
72 			DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"),
73 		},
74 	},
75 	{
76 		.ident = "CF-18",
77 		.matches = {
78 			DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
79 		},
80 		.callback = lifebook_set_serio_phys,
81 		.driver_data = "isa0060/serio3",
82 	},
83 	{
84 		.ident = "Panasonic CF-28",
85 		.matches = {
86 			DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
87 			DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"),
88 		},
89 		.callback = lifebook_set_6byte_proto,
90 	},
91 	{
92 		.ident = "Panasonic CF-29",
93 		.matches = {
94 			DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
95 			DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
96 		},
97 		.callback = lifebook_set_6byte_proto,
98 	},
99 	{
100 		.ident = "CF-72",
101 		.matches = {
102 			DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"),
103 		},
104 		.callback = lifebook_set_serio_phys,
105 		.driver_data = "isa0060/serio3",
106 	},
107 	{
108 		.ident = "Lifebook B142",
109 		.matches = {
110 			DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
111 		},
112 	},
113 	{ }
114 };
115 
116 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
117 {
118 	struct lifebook_data *priv = psmouse->private;
119 	struct input_dev *dev1 = psmouse->dev;
120 	struct input_dev *dev2 = priv ? priv->dev2 : NULL;
121 	unsigned char *packet = psmouse->packet;
122 	int relative_packet = packet[0] & 0x08;
123 
124 	if (relative_packet || !lifebook_use_6byte_proto) {
125 		if (psmouse->pktcnt != 3)
126 			return PSMOUSE_GOOD_DATA;
127 	} else {
128 		switch (psmouse->pktcnt) {
129 		case 1:
130 			return (packet[0] & 0xf8) == 0x00 ?
131 				PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
132 		case 2:
133 			return PSMOUSE_GOOD_DATA;
134 		case 3:
135 			return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
136 				PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
137 		case 4:
138 			return (packet[3] & 0xf8) == 0xc0 ?
139 				PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
140 		case 5:
141 			return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
142 				PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
143 		case 6:
144 			if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0))
145 				return PSMOUSE_BAD_DATA;
146 			if ((packet[5] & 0xc0) != (packet[1] & 0xc0))
147 				return PSMOUSE_BAD_DATA;
148 			break; /* report data */
149 		}
150 	}
151 
152 	if (relative_packet) {
153 		if (!dev2)
154 			printk(KERN_WARNING "lifebook.c: got relative packet "
155 				"but no relative device set up\n");
156 	} else if (lifebook_use_6byte_proto) {
157 		input_report_abs(dev1, ABS_X,
158 				 ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
159 		input_report_abs(dev1, ABS_Y,
160 				 4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
161 	} else {
162 		input_report_abs(dev1, ABS_X,
163 				 (packet[1] | ((packet[0] & 0x30) << 4)));
164 		input_report_abs(dev1, ABS_Y,
165 				 1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
166 	}
167 
168 	input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
169 	input_sync(dev1);
170 
171 	if (dev2) {
172 		if (relative_packet) {
173 			input_report_rel(dev2, REL_X,
174 				((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
175 			input_report_rel(dev2, REL_Y,
176 				 -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
177 		}
178 		input_report_key(dev2, BTN_LEFT, packet[0] & 0x01);
179 		input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02);
180 		input_sync(dev2);
181 	}
182 
183 	return PSMOUSE_FULL_PACKET;
184 }
185 
186 static int lifebook_absolute_mode(struct psmouse *psmouse)
187 {
188 	struct ps2dev *ps2dev = &psmouse->ps2dev;
189 	unsigned char param;
190 
191 	if (psmouse_reset(psmouse))
192 		return -1;
193 
194 	/*
195 	   Enable absolute output -- ps2_command fails always but if
196 	   you leave this call out the touchsreen will never send
197 	   absolute coordinates
198 	*/
199 	param = lifebook_use_6byte_proto ? 0x08 : 0x07;
200 	ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
201 
202 	return 0;
203 }
204 
205 static void lifebook_relative_mode(struct psmouse *psmouse)
206 {
207 	struct ps2dev *ps2dev = &psmouse->ps2dev;
208 	unsigned char param = 0x06;
209 
210 	ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
211 }
212 
213 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
214 {
215 	static const unsigned char params[] = { 0, 1, 2, 2, 3 };
216 	unsigned char p;
217 
218 	if (resolution == 0 || resolution > 400)
219 		resolution = 400;
220 
221 	p = params[resolution / 100];
222 	ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
223 	psmouse->resolution = 50 << p;
224 }
225 
226 static void lifebook_disconnect(struct psmouse *psmouse)
227 {
228 	struct lifebook_data *priv = psmouse->private;
229 
230 	psmouse_reset(psmouse);
231 	if (priv) {
232 		input_unregister_device(priv->dev2);
233 		kfree(priv);
234 	}
235 	psmouse->private = NULL;
236 }
237 
238 int lifebook_detect(struct psmouse *psmouse, int set_properties)
239 {
240         if (!dmi_check_system(lifebook_dmi_table))
241                 return -1;
242 
243 	if (desired_serio_phys &&
244 	    strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
245 		return -1;
246 
247 	if (set_properties) {
248 		psmouse->vendor = "Fujitsu";
249 		psmouse->name = "Lifebook TouchScreen";
250 	}
251 
252         return 0;
253 }
254 
255 static int lifebook_create_relative_device(struct psmouse *psmouse)
256 {
257 	struct input_dev *dev2;
258 	struct lifebook_data *priv;
259 	int error = -ENOMEM;
260 
261 	priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL);
262 	dev2 = input_allocate_device();
263 	if (!priv || !dev2)
264 		goto err_out;
265 
266 	priv->dev2 = dev2;
267 	snprintf(priv->phys, sizeof(priv->phys),
268 		 "%s/input1", psmouse->ps2dev.serio->phys);
269 
270 	dev2->phys = priv->phys;
271 	dev2->name = "PS/2 Touchpad";
272 	dev2->id.bustype = BUS_I8042;
273 	dev2->id.vendor  = 0x0002;
274 	dev2->id.product = PSMOUSE_LIFEBOOK;
275 	dev2->id.version = 0x0000;
276 	dev2->dev.parent = &psmouse->ps2dev.serio->dev;
277 
278 	dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
279 	dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
280 	dev2->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
281 		BIT_MASK(BTN_RIGHT);
282 
283 	error = input_register_device(priv->dev2);
284 	if (error)
285 		goto err_out;
286 
287 	psmouse->private = priv;
288 	return 0;
289 
290  err_out:
291 	input_free_device(dev2);
292 	kfree(priv);
293 	return error;
294 }
295 
296 int lifebook_init(struct psmouse *psmouse)
297 {
298 	struct input_dev *dev1 = psmouse->dev;
299 	int max_coord = lifebook_use_6byte_proto ? 4096 : 1024;
300 
301 	if (lifebook_absolute_mode(psmouse))
302 		return -1;
303 
304 	dev1->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
305 	dev1->relbit[0] = 0;
306 	dev1->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
307 	input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
308 	input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);
309 
310 	if (!desired_serio_phys) {
311 		if (lifebook_create_relative_device(psmouse)) {
312 			lifebook_relative_mode(psmouse);
313 			return -1;
314 		}
315 	}
316 
317 	psmouse->protocol_handler = lifebook_process_byte;
318 	psmouse->set_resolution = lifebook_set_resolution;
319 	psmouse->disconnect = lifebook_disconnect;
320 	psmouse->reconnect  = lifebook_absolute_mode;
321 
322 	psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
323 
324 	/*
325 	 * Use packet size = 3 even when using 6-byte protocol because
326 	 * that's what POLL will return on Lifebooks (according to spec).
327 	 */
328 	psmouse->pktsize = 3;
329 
330 	return 0;
331 }
332 
333