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lifebook.c
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1 /*
2  * Fujitsu B-series Lifebook PS/2 TouchScreen driver
3  *
4  * Copyright (c) 2005 Vojtech Pavlik <[email protected]>
5  * Copyright (c) 2005 Kenan Esau <[email protected]>
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 
21 #include "psmouse.h"
22 #include "lifebook.h"
23 
24 struct lifebook_data {
25  struct input_dev *dev2; /* Relative device */
26  char phys[32];
27 };
28 
29 static bool lifebook_present;
30 
31 static const char *desired_serio_phys;
32 
33 static int lifebook_limit_serio3(const struct dmi_system_id *d)
34 {
35  desired_serio_phys = "isa0060/serio3";
36  return 1;
37 }
38 
39 static bool lifebook_use_6byte_proto;
40 
41 static int lifebook_set_6byte_proto(const struct dmi_system_id *d)
42 {
43  lifebook_use_6byte_proto = true;
44  return 1;
45 }
46 
47 static const struct dmi_system_id __initconst lifebook_dmi_table[] = {
48  {
49  /* FLORA-ie 55mi */
50  .matches = {
51  DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"),
52  },
53  },
54  {
55  /* LifeBook B */
56  .matches = {
57  DMI_MATCH(DMI_PRODUCT_NAME, "Lifebook B Series"),
58  },
59  },
60  {
61  /* LifeBook B */
62  .matches = {
63  DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"),
64  },
65  },
66  {
67  /* Lifebook B */
68  .matches = {
69  DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
70  },
71  },
72  {
73  /* Lifebook B-2130 */
74  .matches = {
75  DMI_MATCH(DMI_BOARD_NAME, "ZEPHYR"),
76  },
77  },
78  {
79  /* Lifebook B213x/B2150 */
80  .matches = {
81  DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"),
82  },
83  },
84  {
85  /* Zephyr */
86  .matches = {
87  DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"),
88  },
89  },
90  {
91  /* Panasonic CF-18 */
92  .matches = {
93  DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
94  },
95  .callback = lifebook_limit_serio3,
96  },
97  {
98  /* Panasonic CF-28 */
99  .matches = {
100  DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
101  DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"),
102  },
103  .callback = lifebook_set_6byte_proto,
104  },
105  {
106  /* Panasonic CF-29 */
107  .matches = {
108  DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
109  DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
110  },
111  .callback = lifebook_set_6byte_proto,
112  },
113  {
114  /* Panasonic CF-72 */
115  .matches = {
116  DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"),
117  },
118  .callback = lifebook_set_6byte_proto,
119  },
120  {
121  /* Lifebook B142 */
122  .matches = {
123  DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
124  },
125  },
126  { }
127 };
128 
129 void __init lifebook_module_init(void)
130 {
131  lifebook_present = dmi_check_system(lifebook_dmi_table);
132 }
133 
134 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
135 {
136  struct lifebook_data *priv = psmouse->private;
137  struct input_dev *dev1 = psmouse->dev;
138  struct input_dev *dev2 = priv ? priv->dev2 : NULL;
139  unsigned char *packet = psmouse->packet;
140  bool relative_packet = packet[0] & 0x08;
141 
142  if (relative_packet || !lifebook_use_6byte_proto) {
143  if (psmouse->pktcnt != 3)
144  return PSMOUSE_GOOD_DATA;
145  } else {
146  switch (psmouse->pktcnt) {
147  case 1:
148  return (packet[0] & 0xf8) == 0x00 ?
149  PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
150  case 2:
151  return PSMOUSE_GOOD_DATA;
152  case 3:
153  return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
154  PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
155  case 4:
156  return (packet[3] & 0xf8) == 0xc0 ?
157  PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
158  case 5:
159  return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
160  PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
161  case 6:
162  if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0))
163  return PSMOUSE_BAD_DATA;
164  if ((packet[5] & 0xc0) != (packet[1] & 0xc0))
165  return PSMOUSE_BAD_DATA;
166  break; /* report data */
167  }
168  }
169 
170  if (relative_packet) {
171  if (!dev2)
172  psmouse_warn(psmouse,
173  "got relative packet but no relative device set up\n");
174  } else {
175  if (lifebook_use_6byte_proto) {
176  input_report_abs(dev1, ABS_X,
177  ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
178  input_report_abs(dev1, ABS_Y,
179  4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
180  } else {
181  input_report_abs(dev1, ABS_X,
182  (packet[1] | ((packet[0] & 0x30) << 4)));
183  input_report_abs(dev1, ABS_Y,
184  1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
185  }
186  input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
187  input_sync(dev1);
188  }
189 
190  if (dev2) {
191  if (relative_packet) {
192  input_report_rel(dev2, REL_X,
193  ((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
194  input_report_rel(dev2, REL_Y,
195  -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
196  }
197  input_report_key(dev2, BTN_LEFT, packet[0] & 0x01);
198  input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02);
199  input_sync(dev2);
200  }
201 
202  return PSMOUSE_FULL_PACKET;
203 }
204 
205 static int lifebook_absolute_mode(struct psmouse *psmouse)
206 {
207  struct ps2dev *ps2dev = &psmouse->ps2dev;
208  unsigned char param;
209 
210  if (psmouse_reset(psmouse))
211  return -1;
212 
213  /*
214  * Enable absolute output -- ps2_command fails always but if
215  * you leave this call out the touchscreen will never send
216  * absolute coordinates
217  */
218  param = lifebook_use_6byte_proto ? 0x08 : 0x07;
219  ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
220 
221  return 0;
222 }
223 
224 static void lifebook_relative_mode(struct psmouse *psmouse)
225 {
226  struct ps2dev *ps2dev = &psmouse->ps2dev;
227  unsigned char param = 0x06;
228 
229  ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
230 }
231 
232 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
233 {
234  static const unsigned char params[] = { 0, 1, 2, 2, 3 };
235  unsigned char p;
236 
237  if (resolution == 0 || resolution > 400)
238  resolution = 400;
239 
240  p = params[resolution / 100];
241  ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
242  psmouse->resolution = 50 << p;
243 }
244 
245 static void lifebook_disconnect(struct psmouse *psmouse)
246 {
247  struct lifebook_data *priv = psmouse->private;
248 
249  psmouse_reset(psmouse);
250  if (priv) {
251  input_unregister_device(priv->dev2);
252  kfree(priv);
253  }
254  psmouse->private = NULL;
255 }
256 
257 int lifebook_detect(struct psmouse *psmouse, bool set_properties)
258 {
259  if (!lifebook_present)
260  return -1;
261 
262  if (desired_serio_phys &&
263  strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
264  return -1;
265 
266  if (set_properties) {
267  psmouse->vendor = "Fujitsu";
268  psmouse->name = "Lifebook TouchScreen";
269  }
270 
271  return 0;
272 }
273 
274 static int lifebook_create_relative_device(struct psmouse *psmouse)
275 {
276  struct input_dev *dev2;
277  struct lifebook_data *priv;
278  int error = -ENOMEM;
279 
280  priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL);
281  dev2 = input_allocate_device();
282  if (!priv || !dev2)
283  goto err_out;
284 
285  priv->dev2 = dev2;
286  snprintf(priv->phys, sizeof(priv->phys),
287  "%s/input1", psmouse->ps2dev.serio->phys);
288 
289  dev2->phys = priv->phys;
290  dev2->name = "PS/2 Touchpad";
291  dev2->id.bustype = BUS_I8042;
292  dev2->id.vendor = 0x0002;
293  dev2->id.product = PSMOUSE_LIFEBOOK;
294  dev2->id.version = 0x0000;
295  dev2->dev.parent = &psmouse->ps2dev.serio->dev;
296 
297  dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
298  dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
299  dev2->keybit[BIT_WORD(BTN_LEFT)] =
300  BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
301 
302  error = input_register_device(priv->dev2);
303  if (error)
304  goto err_out;
305 
306  psmouse->private = priv;
307  return 0;
308 
309  err_out:
310  input_free_device(dev2);
311  kfree(priv);
312  return error;
313 }
314 
315 int lifebook_init(struct psmouse *psmouse)
316 {
317  struct input_dev *dev1 = psmouse->dev;
318  int max_coord = lifebook_use_6byte_proto ? 4096 : 1024;
319 
320  if (lifebook_absolute_mode(psmouse))
321  return -1;
322 
323  dev1->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
324  dev1->relbit[0] = 0;
325  dev1->keybit[BIT_WORD(BTN_MOUSE)] = 0;
326  dev1->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
327  input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
328  input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);
329 
330  if (!desired_serio_phys) {
331  if (lifebook_create_relative_device(psmouse)) {
332  lifebook_relative_mode(psmouse);
333  return -1;
334  }
335  }
336 
337  psmouse->protocol_handler = lifebook_process_byte;
338  psmouse->set_resolution = lifebook_set_resolution;
339  psmouse->disconnect = lifebook_disconnect;
340  psmouse->reconnect = lifebook_absolute_mode;
341 
342  psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
343 
344  /*
345  * Use packet size = 3 even when using 6-byte protocol because
346  * that's what POLL will return on Lifebooks (according to spec).
347  */
348  psmouse->pktsize = 3;
349 
350  return 0;
351 }
352 
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