Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[linux-2.6] / drivers / input / mouse / lifebook.c
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 = "Lifebook B142",
101                 .matches = {
102                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
103                 },
104         },
105         { }
106 };
107
108 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
109 {
110         struct lifebook_data *priv = psmouse->private;
111         struct input_dev *dev1 = psmouse->dev;
112         struct input_dev *dev2 = priv ? priv->dev2 : NULL;
113         unsigned char *packet = psmouse->packet;
114         int relative_packet = packet[0] & 0x08;
115
116         if (relative_packet || !lifebook_use_6byte_proto) {
117                 if (psmouse->pktcnt != 3)
118                         return PSMOUSE_GOOD_DATA;
119         } else {
120                 switch (psmouse->pktcnt) {
121                 case 1:
122                         return (packet[0] & 0xf8) == 0x00 ?
123                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
124                 case 2:
125                         return PSMOUSE_GOOD_DATA;
126                 case 3:
127                         return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
128                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
129                 case 4:
130                         return (packet[3] & 0xf8) == 0xc0 ?
131                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
132                 case 5:
133                         return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
134                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
135                 case 6:
136                         if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0))
137                                 return PSMOUSE_BAD_DATA;
138                         if ((packet[5] & 0xc0) != (packet[1] & 0xc0))
139                                 return PSMOUSE_BAD_DATA;
140                         break; /* report data */
141                 }
142         }
143
144         if (relative_packet) {
145                 if (!dev2)
146                         printk(KERN_WARNING "lifebook.c: got relative packet "
147                                 "but no relative device set up\n");
148         } else if (lifebook_use_6byte_proto) {
149                 input_report_abs(dev1, ABS_X,
150                                  ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
151                 input_report_abs(dev1, ABS_Y,
152                                  4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
153         } else {
154                 input_report_abs(dev1, ABS_X,
155                                  (packet[1] | ((packet[0] & 0x30) << 4)));
156                 input_report_abs(dev1, ABS_Y,
157                                  1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
158         }
159
160         input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
161         input_sync(dev1);
162
163         if (dev2) {
164                 if (relative_packet) {
165                         input_report_rel(dev2, REL_X,
166                                 ((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
167                         input_report_rel(dev2, REL_Y,
168                                  -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
169                 }
170                 input_report_key(dev2, BTN_LEFT, packet[0] & 0x01);
171                 input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02);
172                 input_sync(dev2);
173         }
174
175         return PSMOUSE_FULL_PACKET;
176 }
177
178 static int lifebook_absolute_mode(struct psmouse *psmouse)
179 {
180         struct ps2dev *ps2dev = &psmouse->ps2dev;
181         unsigned char param;
182
183         if (psmouse_reset(psmouse))
184                 return -1;
185
186         /*
187            Enable absolute output -- ps2_command fails always but if
188            you leave this call out the touchsreen will never send
189            absolute coordinates
190         */
191         param = lifebook_use_6byte_proto ? 0x08 : 0x07;
192         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
193
194         return 0;
195 }
196
197 static void lifebook_relative_mode(struct psmouse *psmouse)
198 {
199         struct ps2dev *ps2dev = &psmouse->ps2dev;
200         unsigned char param = 0x06;
201
202         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
203 }
204
205 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
206 {
207         static const unsigned char params[] = { 0, 1, 2, 2, 3 };
208         unsigned char p;
209
210         if (resolution == 0 || resolution > 400)
211                 resolution = 400;
212
213         p = params[resolution / 100];
214         ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
215         psmouse->resolution = 50 << p;
216 }
217
218 static void lifebook_disconnect(struct psmouse *psmouse)
219 {
220         psmouse_reset(psmouse);
221         kfree(psmouse->private);
222         psmouse->private = NULL;
223 }
224
225 int lifebook_detect(struct psmouse *psmouse, int set_properties)
226 {
227         if (!dmi_check_system(lifebook_dmi_table))
228                 return -1;
229
230         if (desired_serio_phys &&
231             strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
232                 return -1;
233
234         if (set_properties) {
235                 psmouse->vendor = "Fujitsu";
236                 psmouse->name = "Lifebook TouchScreen";
237         }
238
239         return 0;
240 }
241
242 static int lifebook_create_relative_device(struct psmouse *psmouse)
243 {
244         struct input_dev *dev2;
245         struct lifebook_data *priv;
246         int error = -ENOMEM;
247
248         priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL);
249         dev2 = input_allocate_device();
250         if (!priv || !dev2)
251                 goto err_out;
252
253         priv->dev2 = dev2;
254         snprintf(priv->phys, sizeof(priv->phys),
255                  "%s/input1", psmouse->ps2dev.serio->phys);
256
257         dev2->phys = priv->phys;
258         dev2->name = "PS/2 Touchpad";
259         dev2->id.bustype = BUS_I8042;
260         dev2->id.vendor  = 0x0002;
261         dev2->id.product = PSMOUSE_LIFEBOOK;
262         dev2->id.version = 0x0000;
263         dev2->dev.parent = &psmouse->ps2dev.serio->dev;
264
265         dev2->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
266         dev2->relbit[LONG(REL_X)] = BIT(REL_X) | BIT(REL_Y);
267         dev2->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT);
268
269         error = input_register_device(priv->dev2);
270         if (error)
271                 goto err_out;
272
273         psmouse->private = priv;
274         return 0;
275
276  err_out:
277         input_free_device(dev2);
278         kfree(priv);
279         return error;
280 }
281
282 int lifebook_init(struct psmouse *psmouse)
283 {
284         struct input_dev *dev1 = psmouse->dev;
285         int max_coord = lifebook_use_6byte_proto ? 1024 : 4096;
286
287         if (lifebook_absolute_mode(psmouse))
288                 return -1;
289
290         dev1->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY);
291         dev1->relbit[0] = 0;
292         dev1->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
293         input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
294         input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);
295
296         if (!desired_serio_phys) {
297                 if (lifebook_create_relative_device(psmouse)) {
298                         lifebook_relative_mode(psmouse);
299                         return -1;
300                 }
301         }
302
303         psmouse->protocol_handler = lifebook_process_byte;
304         psmouse->set_resolution = lifebook_set_resolution;
305         psmouse->disconnect = lifebook_disconnect;
306         psmouse->reconnect  = lifebook_absolute_mode;
307
308         psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
309
310         /*
311          * Use packet size = 3 even when using 6-byte protocol because
312          * that's what POLL will return on Lifebooks (according to spec).
313          */
314         psmouse->pktsize = 3;
315
316         return 0;
317 }
318