2 * Fujitsu B-series Lifebook PS/2 TouchScreen driver
4 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
5 * Copyright (c) 2005 Kenan Esau <kenan.esau@conan.de>
7 * TouchScreen detection, absolute mode setting and packet layout is taken from
8 * Harald Hoyer's description of the device.
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.
15 #include <linux/input.h>
16 #include <linux/serio.h>
17 #include <linux/libps2.h>
18 #include <linux/dmi.h>
23 struct lifebook_data {
24 struct input_dev *dev2; /* Relative device */
28 static bool lifebook_present;
30 static const char *desired_serio_phys;
32 static int lifebook_limit_serio3(const struct dmi_system_id *d)
34 desired_serio_phys = "isa0060/serio3";
38 static bool lifebook_use_6byte_proto;
40 static int lifebook_set_6byte_proto(const struct dmi_system_id *d)
42 lifebook_use_6byte_proto = true;
46 static const struct dmi_system_id __initconst lifebook_dmi_table[] = {
47 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
51 DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"),
57 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"),
63 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
69 DMI_MATCH(DMI_BOARD_NAME, "ZEPHYR"),
73 /* Lifebook B213x/B2150 */
75 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"),
81 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"),
87 DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
89 .callback = lifebook_limit_serio3,
94 DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
95 DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"),
97 .callback = lifebook_set_6byte_proto,
100 /* Panasonic CF-29 */
102 DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
103 DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
105 .callback = lifebook_set_6byte_proto,
108 /* Panasonic CF-72 */
110 DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"),
112 .callback = lifebook_set_6byte_proto,
117 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
124 void __init lifebook_module_init(void)
126 lifebook_present = dmi_check_system(lifebook_dmi_table);
129 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
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;
137 if (relative_packet || !lifebook_use_6byte_proto) {
138 if (psmouse->pktcnt != 3)
139 return PSMOUSE_GOOD_DATA;
141 switch (psmouse->pktcnt) {
143 return (packet[0] & 0xf8) == 0x00 ?
144 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
146 return PSMOUSE_GOOD_DATA;
148 return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
149 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
151 return (packet[3] & 0xf8) == 0xc0 ?
152 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
154 return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
155 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
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 */
165 if (relative_packet) {
167 printk(KERN_WARNING "lifebook.c: got relative packet "
168 "but no relative device set up\n");
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)));
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)));
181 input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
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]));
192 input_report_key(dev2, BTN_LEFT, packet[0] & 0x01);
193 input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02);
197 return PSMOUSE_FULL_PACKET;
200 static int lifebook_absolute_mode(struct psmouse *psmouse)
202 struct ps2dev *ps2dev = &psmouse->ps2dev;
205 if (psmouse_reset(psmouse))
209 * Enable absolute output -- ps2_command fails always but if
210 * you leave this call out the touchsreen will never send
211 * absolute coordinates
213 param = lifebook_use_6byte_proto ? 0x08 : 0x07;
214 ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES);
219 static void lifebook_relative_mode(struct psmouse *psmouse)
221 struct ps2dev *ps2dev = &psmouse->ps2dev;
222 unsigned char param = 0x06;
224 ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES);
227 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
229 static const unsigned char params[] = { 0, 1, 2, 2, 3 };
232 if (resolution == 0 || resolution > 400)
235 p = params[resolution / 100];
236 ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
237 psmouse->resolution = 50 << p;
240 static void lifebook_disconnect(struct psmouse *psmouse)
242 struct lifebook_data *priv = psmouse->private;
244 psmouse_reset(psmouse);
246 input_unregister_device(priv->dev2);
249 psmouse->private = NULL;
252 int lifebook_detect(struct psmouse *psmouse, bool set_properties)
254 if (!lifebook_present)
257 if (desired_serio_phys &&
258 strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
261 if (set_properties) {
262 psmouse->vendor = "Fujitsu";
263 psmouse->name = "Lifebook TouchScreen";
269 static int lifebook_create_relative_device(struct psmouse *psmouse)
271 struct input_dev *dev2;
272 struct lifebook_data *priv;
275 priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL);
276 dev2 = input_allocate_device();
281 snprintf(priv->phys, sizeof(priv->phys),
282 "%s/input1", psmouse->ps2dev.serio->phys);
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;
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);
297 error = input_register_device(priv->dev2);
301 psmouse->private = priv;
305 input_free_device(dev2);
310 int lifebook_init(struct psmouse *psmouse)
312 struct input_dev *dev1 = psmouse->dev;
313 int max_coord = lifebook_use_6byte_proto ? 4096 : 1024;
315 if (lifebook_absolute_mode(psmouse))
318 dev1->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
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);
325 if (!desired_serio_phys) {
326 if (lifebook_create_relative_device(psmouse)) {
327 lifebook_relative_mode(psmouse);
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;
337 psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
340 * Use packet size = 3 even when using 6-byte protocol because
341 * that's what POLL will return on Lifebooks (according to spec).
343 psmouse->pktsize = 3;