1/* 2 * drivers/input/keyboard/jornada680_kbd.c 3 * 4 * HP Jornada 620/660/680/690 scan keyboard platform driver 5 * Copyright (C) 2007 Kristoffer Ericson <Kristoffer.Ericson@gmail.com> 6 * 7 * Based on hp680_keyb.c 8 * Copyright (C) 2006 Paul Mundt 9 * Copyright (C) 2005 Andriy Skulysh 10 * Split from drivers/input/keyboard/hp600_keyb.c 11 * Copyright (C) 2000 Yaegashi Takeshi (hp6xx kbd scan routine and translation table) 12 * Copyright (C) 2000 Niibe Yutaka (HP620 Keyb translation table) 13 * 14 * This program is free software; you can redistribute it and/or modify it 15 * under the terms of the GNU General Public License version 2 as 16 * published by the Free Software Foundation. 17 */ 18 19#include <linux/init.h> 20#include <linux/input.h> 21#include <linux/input-polldev.h> 22#include <linux/interrupt.h> 23#include <linux/jiffies.h> 24#include <linux/kernel.h> 25#include <linux/module.h> 26#include <linux/platform_device.h> 27#include <linux/slab.h> 28 29#include <asm/delay.h> 30#include <asm/io.h> 31 32#define PCCR 0xa4000104 33#define PDCR 0xa4000106 34#define PECR 0xa4000108 35#define PFCR 0xa400010a 36#define PCDR 0xa4000124 37#define PDDR 0xa4000126 38#define PEDR 0xa4000128 39#define PFDR 0xa400012a 40#define PGDR 0xa400012c 41#define PHDR 0xa400012e 42#define PJDR 0xa4000130 43#define PKDR 0xa4000132 44#define PLDR 0xa4000134 45 46static const unsigned short jornada_scancodes[] = { 47/* PTD1 */ KEY_CAPSLOCK, KEY_MACRO, KEY_LEFTCTRL, 0, KEY_ESC, KEY_KP5, 0, 0, /* 1 -> 8 */ 48 KEY_F1, KEY_F2, KEY_F3, KEY_F8, KEY_F7, KEY_F6, KEY_F4, KEY_F5, /* 9 -> 16 */ 49/* PTD5 */ KEY_SLASH, KEY_APOSTROPHE, KEY_ENTER, 0, KEY_Z, 0, 0, 0, /* 17 -> 24 */ 50 KEY_X, KEY_C, KEY_V, KEY_DOT, KEY_COMMA, KEY_M, KEY_B, KEY_N, /* 25 -> 32 */ 51/* PTD7 */ KEY_KP2, KEY_KP6, KEY_KP3, 0, 0, 0, 0, 0, /* 33 -> 40 */ 52 KEY_F10, KEY_RO, KEY_F9, KEY_KP4, KEY_NUMLOCK, KEY_SCROLLLOCK, KEY_LEFTALT, KEY_HANJA, /* 41 -> 48 */ 53/* PTE0 */ KEY_KATAKANA, KEY_KP0, KEY_GRAVE, 0, KEY_FINANCE, 0, 0, 0, /* 49 -> 56 */ 54 KEY_KPMINUS, KEY_HIRAGANA, KEY_SPACE, KEY_KPDOT, KEY_VOLUMEUP, 249, 0, 0, /* 57 -> 64 */ 55/* PTE1 */ KEY_SEMICOLON, KEY_RIGHTBRACE, KEY_BACKSLASH, 0, KEY_A, 0, 0, 0, /* 65 -> 72 */ 56 KEY_S, KEY_D, KEY_F, KEY_L, KEY_K, KEY_J, KEY_G, KEY_H, /* 73 -> 80 */ 57/* PTE3 */ KEY_KP8, KEY_LEFTMETA, KEY_RIGHTSHIFT, 0, KEY_TAB, 0, 0, 0, /* 81 -> 88 */ 58 0, KEY_LEFTSHIFT, KEY_KP7, KEY_KP9, KEY_KP1, KEY_F11, KEY_KPPLUS, KEY_KPASTERISK, /* 89 -> 96 */ 59/* PTE6 */ KEY_P, KEY_LEFTBRACE, KEY_BACKSPACE, 0, KEY_Q, 0, 0, 0, /* 97 -> 104 */ 60 KEY_W, KEY_E, KEY_R, KEY_O, KEY_I, KEY_U, KEY_T, KEY_Y, /* 105 -> 112 */ 61/* PTE7 */ KEY_0, KEY_MINUS, KEY_EQUAL, 0, KEY_1, 0, 0, 0, /* 113 -> 120 */ 62 KEY_2, KEY_3, KEY_4, KEY_9, KEY_8, KEY_7, KEY_5, KEY_6, /* 121 -> 128 */ 63/* **** */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64 0, 0, 0, 0, 0 65}; 66 67#define JORNADA_SCAN_SIZE 18 68 69struct jornadakbd { 70 struct input_polled_dev *poll_dev; 71 unsigned short keymap[ARRAY_SIZE(jornada_scancodes)]; 72 unsigned char length; 73 unsigned char old_scan[JORNADA_SCAN_SIZE]; 74 unsigned char new_scan[JORNADA_SCAN_SIZE]; 75}; 76 77static void jornada_parse_kbd(struct jornadakbd *jornadakbd) 78{ 79 struct input_dev *input_dev = jornadakbd->poll_dev->input; 80 unsigned short *keymap = jornadakbd->keymap; 81 unsigned int sync_me = 0; 82 unsigned int i, j; 83 84 for (i = 0; i < JORNADA_SCAN_SIZE; i++) { 85 unsigned char new = jornadakbd->new_scan[i]; 86 unsigned char old = jornadakbd->old_scan[i]; 87 unsigned int xor = new ^ old; 88 89 if (xor == 0) 90 continue; 91 92 for (j = 0; j < 8; j++) { 93 unsigned int bit = 1 << j; 94 if (xor & bit) { 95 unsigned int scancode = (i << 3) + j; 96 input_event(input_dev, 97 EV_MSC, MSC_SCAN, scancode); 98 input_report_key(input_dev, 99 keymap[scancode], 100 !(new & bit)); 101 sync_me = 1; 102 } 103 } 104 } 105 106 if (sync_me) 107 input_sync(input_dev); 108} 109 110static void jornada_scan_keyb(unsigned char *s) 111{ 112 int i; 113 unsigned short ec_static, dc_static; /* = UINT16_t */ 114 unsigned char matrix_switch[] = { 115 0xfd, 0xff, /* PTD1 PD(1) */ 116 0xdf, 0xff, /* PTD5 PD(5) */ 117 0x7f, 0xff, /* PTD7 PD(7) */ 118 0xff, 0xfe, /* PTE0 PE(0) */ 119 0xff, 0xfd, /* PTE1 PE(1) */ 120 0xff, 0xf7, /* PTE3 PE(3) */ 121 0xff, 0xbf, /* PTE6 PE(6) */ 122 0xff, 0x7f, /* PTE7 PE(7) */ 123 }, *t = matrix_switch; 124 /* PD(x) : 125 1. 0xcc0c & (1~(1 << (2*(x)+1))))) 126 2. (0xf0cf & 0xfffff) */ 127 /* PE(x) : 128 1. 0xcc0c & 0xffff 129 2. 0xf0cf & (1~(1 << (2*(x)+1))))) */ 130 unsigned short matrix_PDE[] = { 131 0xcc04, 0xf0cf, /* PD(1) */ 132 0xc40c, 0xf0cf, /* PD(5) */ 133 0x4c0c, 0xf0cf, /* PD(7) */ 134 0xcc0c, 0xf0cd, /* PE(0) */ 135 0xcc0c, 0xf0c7, /* PE(1) */ 136 0xcc0c, 0xf04f, /* PE(3) */ 137 0xcc0c, 0xd0cf, /* PE(6) */ 138 0xcc0c, 0x70cf, /* PE(7) */ 139 }, *y = matrix_PDE; 140 141 /* Save these control reg bits */ 142 dc_static = (ctrl_inw(PDCR) & (~0xcc0c)); 143 ec_static = (ctrl_inw(PECR) & (~0xf0cf)); 144 145 for (i = 0; i < 8; i++) { 146 /* disable output for all but the one we want to scan */ 147 ctrl_outw((dc_static | *y++), PDCR); 148 ctrl_outw((ec_static | *y++), PECR); 149 udelay(5); 150 151 /* Get scanline row */ 152 ctrl_outb(*t++, PDDR); 153 ctrl_outb(*t++, PEDR); 154 udelay(50); 155 156 /* Read data */ 157 *s++ = ctrl_inb(PCDR); 158 *s++ = ctrl_inb(PFDR); 159 } 160 /* Scan no lines */ 161 ctrl_outb(0xff, PDDR); 162 ctrl_outb(0xff, PEDR); 163 164 /* Enable all scanlines */ 165 ctrl_outw((dc_static | (0x5555 & 0xcc0c)),PDCR); 166 ctrl_outw((ec_static | (0x5555 & 0xf0cf)),PECR); 167 168 /* Ignore extra keys and events */ 169 *s++ = ctrl_inb(PGDR); 170 *s++ = ctrl_inb(PHDR); 171} 172 173static void jornadakbd680_poll(struct input_polled_dev *dev) 174{ 175 struct jornadakbd *jornadakbd = dev->private; 176 177 jornada_scan_keyb(jornadakbd->new_scan); 178 jornada_parse_kbd(jornadakbd); 179 memcpy(jornadakbd->old_scan, jornadakbd->new_scan, JORNADA_SCAN_SIZE); 180} 181 182static int __devinit jornada680kbd_probe(struct platform_device *pdev) 183{ 184 struct jornadakbd *jornadakbd; 185 struct input_polled_dev *poll_dev; 186 struct input_dev *input_dev; 187 int i, error; 188 189 jornadakbd = kzalloc(sizeof(struct jornadakbd), GFP_KERNEL); 190 if (!jornadakbd) 191 return -ENOMEM; 192 193 poll_dev = input_allocate_polled_device(); 194 if (!poll_dev) { 195 error = -ENOMEM; 196 goto failed; 197 } 198 199 platform_set_drvdata(pdev, jornadakbd); 200 201 jornadakbd->poll_dev = poll_dev; 202 203 memcpy(jornadakbd->keymap, jornada_scancodes, 204 sizeof(jornadakbd->keymap)); 205 206 poll_dev->private = jornadakbd; 207 poll_dev->poll = jornadakbd680_poll; 208 poll_dev->poll_interval = 50; /* msec */ 209 210 input_dev = poll_dev->input; 211 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP); 212 input_dev->name = "HP Jornada 680 keyboard"; 213 input_dev->phys = "jornadakbd/input0"; 214 input_dev->keycode = jornadakbd->keymap; 215 input_dev->keycodesize = sizeof(unsigned short); 216 input_dev->keycodemax = ARRAY_SIZE(jornada_scancodes); 217 input_dev->dev.parent = &pdev->dev; 218 input_dev->id.bustype = BUS_HOST; 219 220 for (i = 0; i < 128; i++) 221 if (jornadakbd->keymap[i]) 222 __set_bit(jornadakbd->keymap[i], input_dev->keybit); 223 __clear_bit(KEY_RESERVED, input_dev->keybit); 224 225 input_set_capability(input_dev, EV_MSC, MSC_SCAN); 226 227 error = input_register_polled_device(jornadakbd->poll_dev); 228 if (error) 229 goto failed; 230 231 return 0; 232 233 failed: 234 printk(KERN_ERR "Jornadakbd: failed to register driver, error: %d\n", 235 error); 236 platform_set_drvdata(pdev, NULL); 237 input_free_polled_device(poll_dev); 238 kfree(jornadakbd); 239 return error; 240 241} 242 243static int __devexit jornada680kbd_remove(struct platform_device *pdev) 244{ 245 struct jornadakbd *jornadakbd = platform_get_drvdata(pdev); 246 247 platform_set_drvdata(pdev, NULL); 248 input_unregister_polled_device(jornadakbd->poll_dev); 249 input_free_polled_device(jornadakbd->poll_dev); 250 kfree(jornadakbd); 251 252 return 0; 253} 254 255static struct platform_driver jornada680kbd_driver = { 256 .driver = { 257 .name = "jornada680_kbd", 258 .owner = THIS_MODULE, 259 }, 260 .probe = jornada680kbd_probe, 261 .remove = __devexit_p(jornada680kbd_remove), 262}; 263 264static int __init jornada680kbd_init(void) 265{ 266 return platform_driver_register(&jornada680kbd_driver); 267} 268 269static void __exit jornada680kbd_exit(void) 270{ 271 platform_driver_unregister(&jornada680kbd_driver); 272} 273 274module_init(jornada680kbd_init); 275module_exit(jornada680kbd_exit); 276 277MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>"); 278MODULE_DESCRIPTION("HP Jornada 620/660/680/690 Keyboard Driver"); 279MODULE_LICENSE("GPL v2"); 280MODULE_ALIAS("platform:jornada680_kbd"); 281