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#include <linux/slab.h>
20#include <linux/types.h>
21
22#include "psmouse.h"
23#include "lifebook.h"
24
25struct lifebook_data {
26 struct input_dev *dev2; /* Relative device */
27 char phys[32];
28};
29
30static bool lifebook_present;
31
32static const char *desired_serio_phys;
33
34static int lifebook_limit_serio3(const struct dmi_system_id *d)
35{
36 desired_serio_phys = "isa0060/serio3";
37 return 1;
38}
39
40static bool lifebook_use_6byte_proto;
41
42static int lifebook_set_6byte_proto(const struct dmi_system_id *d)
43{
44 lifebook_use_6byte_proto = true;
45 return 1;
46}
47
48static const struct dmi_system_id lifebook_dmi_table[] __initconst = {
49 {
50 /* FLORA-ie 55mi */
51 .matches = {
52 DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"),
53 },
54 },
55 {
56 /* LifeBook B */
57 .matches = {
58 DMI_MATCH(DMI_PRODUCT_NAME, "Lifebook B Series"),
59 },
60 },
61 {
62 /* LifeBook B */
63 .matches = {
64 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"),
65 },
66 },
67 {
68 /* Lifebook B */
69 .matches = {
70 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
71 },
72 },
73 {
74 /* Lifebook B-2130 */
75 .matches = {
76 DMI_MATCH(DMI_BOARD_NAME, "ZEPHYR"),
77 },
78 },
79 {
80 /* Lifebook B213x/B2150 */
81 .matches = {
82 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"),
83 },
84 },
85 {
86 /* Zephyr */
87 .matches = {
88 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"),
89 },
90 },
91 {
92 /* Panasonic CF-18 */
93 .matches = {
94 DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
95 },
96 .callback = lifebook_limit_serio3,
97 },
98 {
99 /* Panasonic CF-28 */
100 .matches = {
101 DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
102 DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"),
103 },
104 .callback = lifebook_set_6byte_proto,
105 },
106 {
107 /* Panasonic CF-29 */
108 .matches = {
109 DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
110 DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
111 },
112 .callback = lifebook_set_6byte_proto,
113 },
114 {
115 /* Panasonic CF-72 */
116 .matches = {
117 DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"),
118 },
119 .callback = lifebook_set_6byte_proto,
120 },
121 {
122 /* Lifebook B142 */
123 .matches = {
124 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
125 },
126 },
127 { }
128};
129
130void __init lifebook_module_init(void)
131{
132 lifebook_present = dmi_check_system(lifebook_dmi_table);
133}
134
135static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
136{
137 struct lifebook_data *priv = psmouse->private;
138 struct input_dev *dev1 = psmouse->dev;
139 struct input_dev *dev2 = priv ? priv->dev2 : NULL;
140 u8 *packet = psmouse->packet;
141 bool relative_packet = packet[0] & 0x08;
142
143 if (relative_packet || !lifebook_use_6byte_proto) {
144 if (psmouse->pktcnt != 3)
145 return PSMOUSE_GOOD_DATA;
146 } else {
147 switch (psmouse->pktcnt) {
148 case 1:
149 return (packet[0] & 0xf8) == 0x00 ?
150 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
151 case 2:
152 return PSMOUSE_GOOD_DATA;
153 case 3:
154 return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
155 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
156 case 4:
157 return (packet[3] & 0xf8) == 0xc0 ?
158 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
159 case 5:
160 return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
161 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
162 case 6:
163 if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0))
164 return PSMOUSE_BAD_DATA;
165 if ((packet[5] & 0xc0) != (packet[1] & 0xc0))
166 return PSMOUSE_BAD_DATA;
167 break; /* report data */
168 }
169 }
170
171 if (relative_packet) {
172 if (!dev2)
173 psmouse_warn(psmouse,
174 "got relative packet but no relative device set up\n");
175 } else {
176 if (lifebook_use_6byte_proto) {
177 input_report_abs(dev1, ABS_X,
178 ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
179 input_report_abs(dev1, ABS_Y,
180 4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
181 } else {
182 input_report_abs(dev1, ABS_X,
183 (packet[1] | ((packet[0] & 0x30) << 4)));
184 input_report_abs(dev1, ABS_Y,
185 1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
186 }
187 input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
188 input_sync(dev1);
189 }
190
191 if (dev2) {
192 if (relative_packet)
193 psmouse_report_standard_motion(dev2, packet);
194
195 psmouse_report_standard_buttons(dev2, packet[0]);
196 input_sync(dev2);
197 }
198
199 return PSMOUSE_FULL_PACKET;
200}
201
202static int lifebook_absolute_mode(struct psmouse *psmouse)
203{
204 struct ps2dev *ps2dev = &psmouse->ps2dev;
205 u8 param;
206 int error;
207
208 error = psmouse_reset(psmouse);
209 if (error)
210 return error;
211
212 /*
213 * Enable absolute output -- ps2_command fails always but if
214 * you leave this call out the touchscreen will never send
215 * absolute coordinates
216 */
217 param = lifebook_use_6byte_proto ? 0x08 : 0x07;
218 ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
219
220 return 0;
221}
222
223static void lifebook_relative_mode(struct psmouse *psmouse)
224{
225 struct ps2dev *ps2dev = &psmouse->ps2dev;
226 u8 param = 0x06;
227
228 ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
229}
230
231static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
232{
233 static const u8 params[] = { 0, 1, 2, 2, 3 };
234 u8 p;
235
236 if (resolution == 0 || resolution > 400)
237 resolution = 400;
238
239 p = params[resolution / 100];
240 ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
241 psmouse->resolution = 50 << p;
242}
243
244static void lifebook_disconnect(struct psmouse *psmouse)
245{
246 struct lifebook_data *priv = psmouse->private;
247
248 psmouse_reset(psmouse);
249 if (priv) {
250 input_unregister_device(priv->dev2);
251 kfree(priv);
252 }
253 psmouse->private = NULL;
254}
255
256int lifebook_detect(struct psmouse *psmouse, bool set_properties)
257{
258 if (!lifebook_present)
259 return -ENXIO;
260
261 if (desired_serio_phys &&
262 strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
263 return -ENXIO;
264
265 if (set_properties) {
266 psmouse->vendor = "Fujitsu";
267 psmouse->name = "Lifebook TouchScreen";
268 }
269
270 return 0;
271}
272
273static int lifebook_create_relative_device(struct psmouse *psmouse)
274{
275 struct input_dev *dev2;
276 struct lifebook_data *priv;
277 int error = -ENOMEM;
278
279 priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL);
280 dev2 = input_allocate_device();
281 if (!priv || !dev2)
282 goto err_out;
283
284 priv->dev2 = dev2;
285 snprintf(priv->phys, sizeof(priv->phys),
286 "%s/input1", psmouse->ps2dev.serio->phys);
287
288 dev2->phys = priv->phys;
289 dev2->name = "LBPS/2 Fujitsu Lifebook Touchpad";
290 dev2->id.bustype = BUS_I8042;
291 dev2->id.vendor = 0x0002;
292 dev2->id.product = PSMOUSE_LIFEBOOK;
293 dev2->id.version = 0x0000;
294 dev2->dev.parent = &psmouse->ps2dev.serio->dev;
295
296 input_set_capability(dev2, EV_REL, REL_X);
297 input_set_capability(dev2, EV_REL, REL_Y);
298 input_set_capability(dev2, EV_KEY, BTN_LEFT);
299 input_set_capability(dev2, EV_KEY, BTN_RIGHT);
300
301 error = input_register_device(priv->dev2);
302 if (error)
303 goto err_out;
304
305 psmouse->private = priv;
306 return 0;
307
308 err_out:
309 input_free_device(dev2);
310 kfree(priv);
311 return error;
312}
313
314int lifebook_init(struct psmouse *psmouse)
315{
316 struct input_dev *dev1 = psmouse->dev;
317 int max_coord = lifebook_use_6byte_proto ? 4096 : 1024;
318 int error;
319
320 error = lifebook_absolute_mode(psmouse);
321 if (error)
322 return error;
323
324 /* Clear default capabilities */
325 bitmap_zero(dev1->evbit, EV_CNT);
326 bitmap_zero(dev1->relbit, REL_CNT);
327 bitmap_zero(dev1->keybit, KEY_CNT);
328
329 input_set_capability(dev1, EV_KEY, BTN_TOUCH);
330 input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
331 input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);
332
333 if (!desired_serio_phys) {
334 error = lifebook_create_relative_device(psmouse);
335 if (error) {
336 lifebook_relative_mode(psmouse);
337 return error;
338 }
339 }
340
341 psmouse->protocol_handler = lifebook_process_byte;
342 psmouse->set_resolution = lifebook_set_resolution;
343 psmouse->disconnect = lifebook_disconnect;
344 psmouse->reconnect = lifebook_absolute_mode;
345
346 psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
347
348 /*
349 * Use packet size = 3 even when using 6-byte protocol because
350 * that's what POLL will return on Lifebooks (according to spec).
351 */
352 psmouse->pktsize = 3;
353
354 return 0;
355}
356
357