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 static struct dmi_system_id lifebook_dmi_table[] = { 24 { 25 .ident = "FLORA-ie 55mi", 26 .matches = { 27 DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"), 28 }, 29 }, 30 { 31 .ident = "LifeBook B", 32 .matches = { 33 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"), 34 }, 35 }, 36 { 37 .ident = "Lifebook B", 38 .matches = { 39 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"), 40 }, 41 }, 42 { 43 .ident = "Lifebook B213x/B2150", 44 .matches = { 45 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"), 46 }, 47 }, 48 { 49 .ident = "Zephyr", 50 .matches = { 51 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"), 52 }, 53 }, 54 { 55 .ident = "CF-18", 56 .matches = { 57 DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"), 58 }, 59 }, 60 { 61 .ident = "Lifebook B142", 62 .matches = { 63 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"), 64 }, 65 }, 66 { } 67 }; 68 69 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse) 70 { 71 unsigned char *packet = psmouse->packet; 72 struct input_dev *dev = psmouse->dev; 73 74 if (psmouse->pktcnt != 3) 75 return PSMOUSE_GOOD_DATA; 76 77 /* calculate X and Y */ 78 if ((packet[0] & 0x08) == 0x00) { 79 input_report_abs(dev, ABS_X, 80 (packet[1] | ((packet[0] & 0x30) << 4))); 81 input_report_abs(dev, ABS_Y, 82 1024 - (packet[2] | ((packet[0] & 0xC0) << 2))); 83 } else { 84 input_report_rel(dev, REL_X, 85 ((packet[0] & 0x10) ? packet[1] - 256 : packet[1])); 86 input_report_rel(dev, REL_Y, 87 -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2])); 88 } 89 90 input_report_key(dev, BTN_LEFT, packet[0] & 0x01); 91 input_report_key(dev, BTN_RIGHT, packet[0] & 0x02); 92 input_report_key(dev, BTN_TOUCH, packet[0] & 0x04); 93 94 input_sync(dev); 95 96 return PSMOUSE_FULL_PACKET; 97 } 98 99 static int lifebook_absolute_mode(struct psmouse *psmouse) 100 { 101 struct ps2dev *ps2dev = &psmouse->ps2dev; 102 unsigned char param; 103 104 if (psmouse_reset(psmouse)) 105 return -1; 106 107 /* 108 Enable absolute output -- ps2_command fails always but if 109 you leave this call out the touchsreen will never send 110 absolute coordinates 111 */ 112 param = 0x07; 113 ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES); 114 115 return 0; 116 } 117 118 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution) 119 { 120 static const unsigned char params[] = { 0, 1, 2, 2, 3 }; 121 unsigned char p; 122 123 if (resolution == 0 || resolution > 400) 124 resolution = 400; 125 126 p = params[resolution / 100]; 127 ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES); 128 psmouse->resolution = 50 << p; 129 } 130 131 static void lifebook_disconnect(struct psmouse *psmouse) 132 { 133 psmouse_reset(psmouse); 134 } 135 136 int lifebook_detect(struct psmouse *psmouse, int set_properties) 137 { 138 if (!dmi_check_system(lifebook_dmi_table)) 139 return -1; 140 141 if (set_properties) { 142 psmouse->vendor = "Fujitsu"; 143 psmouse->name = "Lifebook TouchScreen"; 144 } 145 146 return 0; 147 } 148 149 int lifebook_init(struct psmouse *psmouse) 150 { 151 struct input_dev *input_dev = psmouse->dev; 152 153 if (lifebook_absolute_mode(psmouse)) 154 return -1; 155 156 input_dev->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY) | BIT(EV_REL); 157 input_dev->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT); 158 input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH); 159 input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y); 160 input_set_abs_params(input_dev, ABS_X, 0, 1024, 0, 0); 161 input_set_abs_params(input_dev, ABS_Y, 0, 1024, 0, 0); 162 163 psmouse->protocol_handler = lifebook_process_byte; 164 psmouse->set_resolution = lifebook_set_resolution; 165 psmouse->disconnect = lifebook_disconnect; 166 psmouse->reconnect = lifebook_absolute_mode; 167 psmouse->pktsize = 3; 168 169 return 0; 170 } 171 172