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[] = {
50 DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"),
56 DMI_MATCH(DMI_PRODUCT_NAME, "Lifebook B Series"),
62 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"),
68 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
74 DMI_MATCH(DMI_BOARD_NAME, "ZEPHYR"),
78 /* Lifebook B213x/B2150 */
80 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"),
86 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"),
92 DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
94 .callback = lifebook_limit_serio3,
99 DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
100 DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"),
102 .callback = lifebook_set_6byte_proto,
105 /* Panasonic CF-29 */
107 DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
108 DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
110 .callback = lifebook_set_6byte_proto,
113 /* Panasonic CF-72 */
115 DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"),
117 .callback = lifebook_set_6byte_proto,
122 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
128 void __init lifebook_module_init(void)
130 lifebook_present = dmi_check_system(lifebook_dmi_table);
133 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
135 struct lifebook_data *priv = psmouse->private;
136 struct input_dev *dev1 = psmouse->dev;
137 struct input_dev *dev2 = priv ? priv->dev2 : NULL;
138 unsigned char *packet = psmouse->packet;
139 bool relative_packet = packet[0] & 0x08;
141 if (relative_packet || !lifebook_use_6byte_proto) {
142 if (psmouse->pktcnt != 3)
143 return PSMOUSE_GOOD_DATA;
145 switch (psmouse->pktcnt) {
147 return (packet[0] & 0xf8) == 0x00 ?
148 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
150 return PSMOUSE_GOOD_DATA;
152 return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
153 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
155 return (packet[3] & 0xf8) == 0xc0 ?
156 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
158 return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
159 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
161 if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0))
162 return PSMOUSE_BAD_DATA;
163 if ((packet[5] & 0xc0) != (packet[1] & 0xc0))
164 return PSMOUSE_BAD_DATA;
165 break; /* report data */
169 if (relative_packet) {
171 printk(KERN_WARNING "lifebook.c: got relative packet "
172 "but no relative device set up\n");
174 if (lifebook_use_6byte_proto) {
175 input_report_abs(dev1, ABS_X,
176 ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
177 input_report_abs(dev1, ABS_Y,
178 4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
180 input_report_abs(dev1, ABS_X,
181 (packet[1] | ((packet[0] & 0x30) << 4)));
182 input_report_abs(dev1, ABS_Y,
183 1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
185 input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
190 if (relative_packet) {
191 input_report_rel(dev2, REL_X,
192 ((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
193 input_report_rel(dev2, REL_Y,
194 -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
196 input_report_key(dev2, BTN_LEFT, packet[0] & 0x01);
197 input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02);
201 return PSMOUSE_FULL_PACKET;
204 static int lifebook_absolute_mode(struct psmouse *psmouse)
206 struct ps2dev *ps2dev = &psmouse->ps2dev;
209 if (psmouse_reset(psmouse))
213 * Enable absolute output -- ps2_command fails always but if
214 * you leave this call out the touchsreen will never send
215 * absolute coordinates
217 param = lifebook_use_6byte_proto ? 0x08 : 0x07;
218 ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES);
223 static void lifebook_relative_mode(struct psmouse *psmouse)
225 struct ps2dev *ps2dev = &psmouse->ps2dev;
226 unsigned char param = 0x06;
228 ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES);
231 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
233 static const unsigned char params[] = { 0, 1, 2, 2, 3 };
236 if (resolution == 0 || resolution > 400)
239 p = params[resolution / 100];
240 ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
241 psmouse->resolution = 50 << p;
244 static void lifebook_disconnect(struct psmouse *psmouse)
246 struct lifebook_data *priv = psmouse->private;
248 psmouse_reset(psmouse);
250 input_unregister_device(priv->dev2);
253 psmouse->private = NULL;
256 int lifebook_detect(struct psmouse *psmouse, bool set_properties)
258 if (!lifebook_present)
261 if (desired_serio_phys &&
262 strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
265 if (set_properties) {
266 psmouse->vendor = "Fujitsu";
267 psmouse->name = "Lifebook TouchScreen";
273 static int lifebook_create_relative_device(struct psmouse *psmouse)
275 struct input_dev *dev2;
276 struct lifebook_data *priv;
279 priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL);
280 dev2 = input_allocate_device();
285 snprintf(priv->phys, sizeof(priv->phys),
286 "%s/input1", psmouse->ps2dev.serio->phys);
288 dev2->phys = priv->phys;
289 dev2->name = "PS/2 Touchpad";
290 dev2->id.bustype = BUS_I8042;
291 dev2->id.vendor = 0x0002;
292 dev2->id.product = PSMOUSE_LIFEBOOK;
293 dev2->id.version = 0x0000;
294 dev2->dev.parent = &psmouse->ps2dev.serio->dev;
296 dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
297 dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
298 dev2->keybit[BIT_WORD(BTN_LEFT)] =
299 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
301 error = input_register_device(priv->dev2);
305 psmouse->private = priv;
309 input_free_device(dev2);
314 int lifebook_init(struct psmouse *psmouse)
316 struct input_dev *dev1 = psmouse->dev;
317 int max_coord = lifebook_use_6byte_proto ? 4096 : 1024;
319 if (lifebook_absolute_mode(psmouse))
322 dev1->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
324 dev1->keybit[BIT_WORD(BTN_MOUSE)] = 0;
325 dev1->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
326 input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
327 input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);
329 if (!desired_serio_phys) {
330 if (lifebook_create_relative_device(psmouse)) {
331 lifebook_relative_mode(psmouse);
336 psmouse->protocol_handler = lifebook_process_byte;
337 psmouse->set_resolution = lifebook_set_resolution;
338 psmouse->disconnect = lifebook_disconnect;
339 psmouse->reconnect = lifebook_absolute_mode;
341 psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
344 * Use packet size = 3 even when using 6-byte protocol because
345 * that's what POLL will return on Lifebooks (according to spec).
347 psmouse->pktsize = 3;