Input: psmouse - do not carry DMI data around
[linux-2.6.git] / 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 bool lifebook_present;
29
30 static const char *desired_serio_phys;
31
32 static int lifebook_limit_serio3(const struct dmi_system_id *d)
33 {
34         desired_serio_phys = "isa0060/serio3";
35         return 0;
36 }
37
38 static bool lifebook_use_6byte_proto;
39
40 static int lifebook_set_6byte_proto(const struct dmi_system_id *d)
41 {
42         lifebook_use_6byte_proto = true;
43         return 0;
44 }
45
46 static const struct dmi_system_id __initconst lifebook_dmi_table[] = {
47 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
48         {
49                 .ident = "FLORA-ie 55mi",
50                 .matches = {
51                         DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"),
52                 },
53         },
54         {
55                 .ident = "LifeBook B",
56                 .matches = {
57                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"),
58                 },
59         },
60         {
61                 .ident = "Lifebook B",
62                 .matches = {
63                         DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
64                 },
65         },
66         {
67                 .ident = "Lifebook B-2130",
68                 .matches = {
69                         DMI_MATCH(DMI_BOARD_NAME, "ZEPHYR"),
70                 },
71         },
72         {
73                 .ident = "Lifebook B213x/B2150",
74                 .matches = {
75                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"),
76                 },
77         },
78         {
79                 .ident = "Zephyr",
80                 .matches = {
81                         DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"),
82                 },
83         },
84         {
85                 .ident = "CF-18",
86                 .matches = {
87                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
88                 },
89                 .callback = lifebook_limit_serio3,
90         },
91         {
92                 .ident = "Panasonic CF-28",
93                 .matches = {
94                         DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
95                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"),
96                 },
97                 .callback = lifebook_set_6byte_proto,
98         },
99         {
100                 .ident = "Panasonic CF-29",
101                 .matches = {
102                         DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
103                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
104                 },
105                 .callback = lifebook_set_6byte_proto,
106         },
107         {
108                 .ident = "CF-72",
109                 .matches = {
110                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"),
111                 },
112                 .callback = lifebook_set_6byte_proto,
113         },
114         {
115                 .ident = "Lifebook B142",
116                 .matches = {
117                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
118                 },
119         },
120         { }
121 #endif
122 };
123
124 void __init lifebook_module_init(void)
125 {
126         lifebook_present = dmi_check_system(lifebook_dmi_table);
127 }
128
129 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
130 {
131         struct lifebook_data *priv = psmouse->private;
132         struct input_dev *dev1 = psmouse->dev;
133         struct input_dev *dev2 = priv ? priv->dev2 : NULL;
134         unsigned char *packet = psmouse->packet;
135         bool relative_packet = packet[0] & 0x08;
136
137         if (relative_packet || !lifebook_use_6byte_proto) {
138                 if (psmouse->pktcnt != 3)
139                         return PSMOUSE_GOOD_DATA;
140         } else {
141                 switch (psmouse->pktcnt) {
142                 case 1:
143                         return (packet[0] & 0xf8) == 0x00 ?
144                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
145                 case 2:
146                         return PSMOUSE_GOOD_DATA;
147                 case 3:
148                         return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
149                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
150                 case 4:
151                         return (packet[3] & 0xf8) == 0xc0 ?
152                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
153                 case 5:
154                         return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
155                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
156                 case 6:
157                         if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0))
158                                 return PSMOUSE_BAD_DATA;
159                         if ((packet[5] & 0xc0) != (packet[1] & 0xc0))
160                                 return PSMOUSE_BAD_DATA;
161                         break; /* report data */
162                 }
163         }
164
165         if (relative_packet) {
166                 if (!dev2)
167                         printk(KERN_WARNING "lifebook.c: got relative packet "
168                                 "but no relative device set up\n");
169         } else {
170                 if (lifebook_use_6byte_proto) {
171                         input_report_abs(dev1, ABS_X,
172                                 ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
173                         input_report_abs(dev1, ABS_Y,
174                                 4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
175                 } else {
176                         input_report_abs(dev1, ABS_X,
177                                 (packet[1] | ((packet[0] & 0x30) << 4)));
178                         input_report_abs(dev1, ABS_Y,
179                                 1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
180                 }
181                 input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
182                 input_sync(dev1);
183         }
184
185         if (dev2) {
186                 if (relative_packet) {
187                         input_report_rel(dev2, REL_X,
188                                 ((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
189                         input_report_rel(dev2, REL_Y,
190                                  -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
191                 }
192                 input_report_key(dev2, BTN_LEFT, packet[0] & 0x01);
193                 input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02);
194                 input_sync(dev2);
195         }
196
197         return PSMOUSE_FULL_PACKET;
198 }
199
200 static int lifebook_absolute_mode(struct psmouse *psmouse)
201 {
202         struct ps2dev *ps2dev = &psmouse->ps2dev;
203         unsigned char param;
204
205         if (psmouse_reset(psmouse))
206                 return -1;
207
208         /*
209          * Enable absolute output -- ps2_command fails always but if
210          * you leave this call out the touchsreen will never send
211          * absolute coordinates
212          */
213         param = lifebook_use_6byte_proto ? 0x08 : 0x07;
214         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
215
216         return 0;
217 }
218
219 static void lifebook_relative_mode(struct psmouse *psmouse)
220 {
221         struct ps2dev *ps2dev = &psmouse->ps2dev;
222         unsigned char param = 0x06;
223
224         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
225 }
226
227 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
228 {
229         static const unsigned char params[] = { 0, 1, 2, 2, 3 };
230         unsigned char p;
231
232         if (resolution == 0 || resolution > 400)
233                 resolution = 400;
234
235         p = params[resolution / 100];
236         ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
237         psmouse->resolution = 50 << p;
238 }
239
240 static void lifebook_disconnect(struct psmouse *psmouse)
241 {
242         struct lifebook_data *priv = psmouse->private;
243
244         psmouse_reset(psmouse);
245         if (priv) {
246                 input_unregister_device(priv->dev2);
247                 kfree(priv);
248         }
249         psmouse->private = NULL;
250 }
251
252 int lifebook_detect(struct psmouse *psmouse, bool set_properties)
253 {
254         if (!lifebook_present)
255                 return -1;
256
257         if (desired_serio_phys &&
258             strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
259                 return -1;
260
261         if (set_properties) {
262                 psmouse->vendor = "Fujitsu";
263                 psmouse->name = "Lifebook TouchScreen";
264         }
265
266         return 0;
267 }
268
269 static int lifebook_create_relative_device(struct psmouse *psmouse)
270 {
271         struct input_dev *dev2;
272         struct lifebook_data *priv;
273         int error = -ENOMEM;
274
275         priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL);
276         dev2 = input_allocate_device();
277         if (!priv || !dev2)
278                 goto err_out;
279
280         priv->dev2 = dev2;
281         snprintf(priv->phys, sizeof(priv->phys),
282                  "%s/input1", psmouse->ps2dev.serio->phys);
283
284         dev2->phys = priv->phys;
285         dev2->name = "PS/2 Touchpad";
286         dev2->id.bustype = BUS_I8042;
287         dev2->id.vendor  = 0x0002;
288         dev2->id.product = PSMOUSE_LIFEBOOK;
289         dev2->id.version = 0x0000;
290         dev2->dev.parent = &psmouse->ps2dev.serio->dev;
291
292         dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
293         dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
294         dev2->keybit[BIT_WORD(BTN_LEFT)] =
295                                 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
296
297         error = input_register_device(priv->dev2);
298         if (error)
299                 goto err_out;
300
301         psmouse->private = priv;
302         return 0;
303
304  err_out:
305         input_free_device(dev2);
306         kfree(priv);
307         return error;
308 }
309
310 int lifebook_init(struct psmouse *psmouse)
311 {
312         struct input_dev *dev1 = psmouse->dev;
313         int max_coord = lifebook_use_6byte_proto ? 4096 : 1024;
314
315         if (lifebook_absolute_mode(psmouse))
316                 return -1;
317
318         dev1->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
319         dev1->relbit[0] = 0;
320         dev1->keybit[BIT_WORD(BTN_MOUSE)] = 0;
321         dev1->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
322         input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
323         input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);
324
325         if (!desired_serio_phys) {
326                 if (lifebook_create_relative_device(psmouse)) {
327                         lifebook_relative_mode(psmouse);
328                         return -1;
329                 }
330         }
331
332         psmouse->protocol_handler = lifebook_process_byte;
333         psmouse->set_resolution = lifebook_set_resolution;
334         psmouse->disconnect = lifebook_disconnect;
335         psmouse->reconnect  = lifebook_absolute_mode;
336
337         psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
338
339         /*
340          * Use packet size = 3 even when using 6-byte protocol because
341          * that's what POLL will return on Lifebooks (according to spec).
342          */
343         psmouse->pktsize = 3;
344
345         return 0;
346 }
347