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