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