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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 | |
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, ¶m, 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, ¶m, 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 | |
353 |
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