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