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 B-2130",
65 .matches = {
66 DMI_MATCH(DMI_BOARD_NAME, "ZEPHYR"),
67 },
68 },
69 {
70 .ident = "Lifebook B213x/B2150",
71 .matches = {
72 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"),
73 },
74 },
75 {
76 .ident = "Zephyr",
77 .matches = {
78 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"),
79 },
80 },
81 {
82 .ident = "CF-18",
83 .matches = {
84 DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
85 },
86 .callback = lifebook_set_serio_phys,
87 .driver_data = "isa0060/serio3",
88 },
89 {
90 .ident = "Panasonic CF-28",
91 .matches = {
92 DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
93 DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"),
94 },
95 .callback = lifebook_set_6byte_proto,
96 },
97 {
98 .ident = "Panasonic CF-29",
99 .matches = {
100 DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
101 DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
102 },
103 .callback = lifebook_set_6byte_proto,
104 },
105 {
106 .ident = "CF-72",
107 .matches = {
108 DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"),
109 },
110 .callback = lifebook_set_serio_phys,
111 .driver_data = "isa0060/serio3",
112 },
113 {
114 .ident = "Lifebook B142",
115 .matches = {
116 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
117 },
118 },
119 { }
120 };
121
122 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
123 {
124 struct lifebook_data *priv = psmouse->private;
125 struct input_dev *dev1 = psmouse->dev;
126 struct input_dev *dev2 = priv ? priv->dev2 : NULL;
127 unsigned char *packet = psmouse->packet;
128 int relative_packet = packet[0] & 0x08;
129
130 if (relative_packet || !lifebook_use_6byte_proto) {
131 if (psmouse->pktcnt != 3)
132 return PSMOUSE_GOOD_DATA;
133 } else {
134 switch (psmouse->pktcnt) {
135 case 1:
136 return (packet[0] & 0xf8) == 0x00 ?
137 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
138 case 2:
139 return PSMOUSE_GOOD_DATA;
140 case 3:
141 return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
142 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
143 case 4:
144 return (packet[3] & 0xf8) == 0xc0 ?
145 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
146 case 5:
147 return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
148 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
149 case 6:
150 if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0))
151 return PSMOUSE_BAD_DATA;
152 if ((packet[5] & 0xc0) != (packet[1] & 0xc0))
153 return PSMOUSE_BAD_DATA;
154 break; /* report data */
155 }
156 }
157
158 if (relative_packet) {
159 if (!dev2)
160 printk(KERN_WARNING "lifebook.c: got relative packet "
161 "but no relative device set up\n");
162 } else {
163 if (lifebook_use_6byte_proto) {
164 input_report_abs(dev1, ABS_X,
165 ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
166 input_report_abs(dev1, ABS_Y,
167 4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
168 } else {
169 input_report_abs(dev1, ABS_X,
170 (packet[1] | ((packet[0] & 0x30) << 4)));
171 input_report_abs(dev1, ABS_Y,
172 1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
173 }
174 input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
175 input_sync(dev1);
176 }
177
178 if (dev2) {
179 if (relative_packet) {
180 input_report_rel(dev2, REL_X,
181 ((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
182 input_report_rel(dev2, REL_Y,
183 -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
184 }
185 input_report_key(dev2, BTN_LEFT, packet[0] & 0x01);
186 input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02);
187 input_sync(dev2);
188 }
189
190 return PSMOUSE_FULL_PACKET;
191 }
192
193 static int lifebook_absolute_mode(struct psmouse *psmouse)
194 {
195 struct ps2dev *ps2dev = &psmouse->ps2dev;
196 unsigned char param;
197
198 if (psmouse_reset(psmouse))
199 return -1;
200
201 /*
202 Enable absolute output -- ps2_command fails always but if
203 you leave this call out the touchsreen will never send
204 absolute coordinates
205 */
206 param = lifebook_use_6byte_proto ? 0x08 : 0x07;
207 ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES);
208
209 return 0;
210 }
211
212 static void lifebook_relative_mode(struct psmouse *psmouse)
213 {
214 struct ps2dev *ps2dev = &psmouse->ps2dev;
215 unsigned char param = 0x06;
216
217 ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES);
218 }
219
220 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
221 {
222 static const unsigned char params[] = { 0, 1, 2, 2, 3 };
223 unsigned char p;
224
225 if (resolution == 0 || resolution > 400)
226 resolution = 400;
227
228 p = params[resolution / 100];
229 ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
230 psmouse->resolution = 50 << p;
231 }
232
233 static void lifebook_disconnect(struct psmouse *psmouse)
234 {
235 struct lifebook_data *priv = psmouse->private;
236
237 psmouse_reset(psmouse);
238 if (priv) {
239 input_unregister_device(priv->dev2);
240 kfree(priv);
241 }
242 psmouse->private = NULL;
243 }
244
245 int lifebook_detect(struct psmouse *psmouse, int set_properties)
246 {
247 if (!dmi_check_system(lifebook_dmi_table))
248 return -1;
249
250 if (desired_serio_phys &&
251 strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
252 return -1;
253
254 if (set_properties) {
255 psmouse->vendor = "Fujitsu";
256 psmouse->name = "Lifebook TouchScreen";
257 }
258
259 return 0;
260 }
261
262 static int lifebook_create_relative_device(struct psmouse *psmouse)
263 {
264 struct input_dev *dev2;
265 struct lifebook_data *priv;
266 int error = -ENOMEM;
267
268 priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL);
269 dev2 = input_allocate_device();
270 if (!priv || !dev2)
271 goto err_out;
272
273 priv->dev2 = dev2;
274 snprintf(priv->phys, sizeof(priv->phys),
275 "%s/input1", psmouse->ps2dev.serio->phys);
276
277 dev2->phys = priv->phys;
278 dev2->name = "PS/2 Touchpad";
279 dev2->id.bustype = BUS_I8042;
280 dev2->id.vendor = 0x0002;
281 dev2->id.product = PSMOUSE_LIFEBOOK;
282 dev2->id.version = 0x0000;
283 dev2->dev.parent = &psmouse->ps2dev.serio->dev;
284
285 dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
286 dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
287 dev2->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
288 BIT_MASK(BTN_RIGHT);
289
290 error = input_register_device(priv->dev2);
291 if (error)
292 goto err_out;
293
294 psmouse->private = priv;
295 return 0;
296
297 err_out:
298 input_free_device(dev2);
299 kfree(priv);
300 return error;
301 }
302
303 int lifebook_init(struct psmouse *psmouse)
304 {
305 struct input_dev *dev1 = psmouse->dev;
306 int max_coord = lifebook_use_6byte_proto ? 4096 : 1024;
307
308 if (lifebook_absolute_mode(psmouse))
309 return -1;
310
311 dev1->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
312 dev1->relbit[0] = 0;
313 dev1->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
314 input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
315 input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);
316
317 if (!desired_serio_phys) {
318 if (lifebook_create_relative_device(psmouse)) {
319 lifebook_relative_mode(psmouse);
320 return -1;
321 }
322 }
323
324 psmouse->protocol_handler = lifebook_process_byte;
325 psmouse->set_resolution = lifebook_set_resolution;
326 psmouse->disconnect = lifebook_disconnect;
327 psmouse->reconnect = lifebook_absolute_mode;
328
329 psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
330
331 /*
332 * Use packet size = 3 even when using 6-byte protocol because
333 * that's what POLL will return on Lifebooks (according to spec).
334 */
335 psmouse->pktsize = 3;
336
337 return 0;
338 }
339
340
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