Kristoffer Ericson | 2aa2cb9 | 2007-09-26 00:02:35 -0400 | [diff] [blame] | 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 | |
Kristoffer Ericson | 4c64681 | 2007-12-14 01:21:14 -0500 | [diff] [blame] | 19 | #include <linux/init.h> |
Kristoffer Ericson | 2aa2cb9 | 2007-09-26 00:02:35 -0400 | [diff] [blame] | 20 | #include <linux/input.h> |
Kristoffer Ericson | 4c64681 | 2007-12-14 01:21:14 -0500 | [diff] [blame] | 21 | #include <linux/input-polldev.h> |
| 22 | #include <linux/interrupt.h> |
| 23 | #include <linux/jiffies.h> |
Kristoffer Ericson | 2aa2cb9 | 2007-09-26 00:02:35 -0400 | [diff] [blame] | 24 | #include <linux/kernel.h> |
| 25 | #include <linux/module.h> |
Kristoffer Ericson | 2aa2cb9 | 2007-09-26 00:02:35 -0400 | [diff] [blame] | 26 | #include <linux/platform_device.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 27 | #include <linux/slab.h> |
Kristoffer Ericson | 2aa2cb9 | 2007-09-26 00:02:35 -0400 | [diff] [blame] | 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 | |
| 46 | static const unsigned short jornada_scancodes[] = { |
Kristoffer Ericson | 4c64681 | 2007-12-14 01:21:14 -0500 | [diff] [blame] | 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 */ |
Kristoffer Ericson | 2aa2cb9 | 2007-09-26 00:02:35 -0400 | [diff] [blame] | 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 | |
| 69 | struct 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 | |
| 77 | static 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 | |
| 110 | static 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 */ |
Paul Mundt | 0af2840 | 2010-10-27 15:24:49 +0900 | [diff] [blame] | 142 | dc_static = (__raw_readw(PDCR) & (~0xcc0c)); |
| 143 | ec_static = (__raw_readw(PECR) & (~0xf0cf)); |
Kristoffer Ericson | 2aa2cb9 | 2007-09-26 00:02:35 -0400 | [diff] [blame] | 144 | |
| 145 | for (i = 0; i < 8; i++) { |
| 146 | /* disable output for all but the one we want to scan */ |
Paul Mundt | 0af2840 | 2010-10-27 15:24:49 +0900 | [diff] [blame] | 147 | __raw_writew((dc_static | *y++), PDCR); |
| 148 | __raw_writew((ec_static | *y++), PECR); |
Kristoffer Ericson | 2aa2cb9 | 2007-09-26 00:02:35 -0400 | [diff] [blame] | 149 | udelay(5); |
| 150 | |
| 151 | /* Get scanline row */ |
Paul Mundt | 0af2840 | 2010-10-27 15:24:49 +0900 | [diff] [blame] | 152 | __raw_writeb(*t++, PDDR); |
| 153 | __raw_writeb(*t++, PEDR); |
Kristoffer Ericson | 2aa2cb9 | 2007-09-26 00:02:35 -0400 | [diff] [blame] | 154 | udelay(50); |
| 155 | |
| 156 | /* Read data */ |
Paul Mundt | 0af2840 | 2010-10-27 15:24:49 +0900 | [diff] [blame] | 157 | *s++ = __raw_readb(PCDR); |
| 158 | *s++ = __raw_readb(PFDR); |
Kristoffer Ericson | 2aa2cb9 | 2007-09-26 00:02:35 -0400 | [diff] [blame] | 159 | } |
| 160 | /* Scan no lines */ |
Paul Mundt | 0af2840 | 2010-10-27 15:24:49 +0900 | [diff] [blame] | 161 | __raw_writeb(0xff, PDDR); |
| 162 | __raw_writeb(0xff, PEDR); |
Kristoffer Ericson | 2aa2cb9 | 2007-09-26 00:02:35 -0400 | [diff] [blame] | 163 | |
| 164 | /* Enable all scanlines */ |
Paul Mundt | 0af2840 | 2010-10-27 15:24:49 +0900 | [diff] [blame] | 165 | __raw_writew((dc_static | (0x5555 & 0xcc0c)),PDCR); |
| 166 | __raw_writew((ec_static | (0x5555 & 0xf0cf)),PECR); |
Kristoffer Ericson | 2aa2cb9 | 2007-09-26 00:02:35 -0400 | [diff] [blame] | 167 | |
| 168 | /* Ignore extra keys and events */ |
Paul Mundt | 0af2840 | 2010-10-27 15:24:49 +0900 | [diff] [blame] | 169 | *s++ = __raw_readb(PGDR); |
| 170 | *s++ = __raw_readb(PHDR); |
Kristoffer Ericson | 2aa2cb9 | 2007-09-26 00:02:35 -0400 | [diff] [blame] | 171 | } |
| 172 | |
| 173 | static 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 | |
| 182 | static 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 | |
| 243 | static 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 | |
| 255 | static struct platform_driver jornada680kbd_driver = { |
| 256 | .driver = { |
| 257 | .name = "jornada680_kbd", |
Kay Sievers | d7b5247 | 2008-04-18 00:24:42 -0400 | [diff] [blame] | 258 | .owner = THIS_MODULE, |
Kristoffer Ericson | 2aa2cb9 | 2007-09-26 00:02:35 -0400 | [diff] [blame] | 259 | }, |
| 260 | .probe = jornada680kbd_probe, |
| 261 | .remove = __devexit_p(jornada680kbd_remove), |
| 262 | }; |
JJ Ding | 5146c84 | 2011-11-29 11:08:39 -0800 | [diff] [blame] | 263 | module_platform_driver(jornada680kbd_driver); |
Kristoffer Ericson | 2aa2cb9 | 2007-09-26 00:02:35 -0400 | [diff] [blame] | 264 | |
| 265 | MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>"); |
| 266 | MODULE_DESCRIPTION("HP Jornada 620/660/680/690 Keyboard Driver"); |
Al Viro | 839cd31 | 2008-05-21 06:32:11 +0100 | [diff] [blame] | 267 | MODULE_LICENSE("GPL v2"); |
Kay Sievers | d7b5247 | 2008-04-18 00:24:42 -0400 | [diff] [blame] | 268 | MODULE_ALIAS("platform:jornada680_kbd"); |