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2aa2cb9e KE |
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 | ||
2aa2cb9e | 19 | #include <linux/init.h> |
4c64681e | 20 | #include <linux/input.h> |
2aa2cb9e | 21 | #include <linux/input-polldev.h> |
4c64681e | 22 | #include <linux/interrupt.h> |
2aa2cb9e | 23 | #include <linux/jiffies.h> |
4c64681e KE |
24 | #include <linux/kernel.h> |
25 | #include <linux/module.h> | |
2aa2cb9e | 26 | #include <linux/platform_device.h> |
5a0e3ad6 | 27 | #include <linux/slab.h> |
2aa2cb9e KE |
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[] = { | |
4c64681e KE |
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 */ | |
2aa2cb9e KE |
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 */ | |
0af28408 PM |
142 | dc_static = (__raw_readw(PDCR) & (~0xcc0c)); |
143 | ec_static = (__raw_readw(PECR) & (~0xf0cf)); | |
2aa2cb9e KE |
144 | |
145 | for (i = 0; i < 8; i++) { | |
146 | /* disable output for all but the one we want to scan */ | |
0af28408 PM |
147 | __raw_writew((dc_static | *y++), PDCR); |
148 | __raw_writew((ec_static | *y++), PECR); | |
2aa2cb9e KE |
149 | udelay(5); |
150 | ||
151 | /* Get scanline row */ | |
0af28408 PM |
152 | __raw_writeb(*t++, PDDR); |
153 | __raw_writeb(*t++, PEDR); | |
2aa2cb9e KE |
154 | udelay(50); |
155 | ||
156 | /* Read data */ | |
0af28408 PM |
157 | *s++ = __raw_readb(PCDR); |
158 | *s++ = __raw_readb(PFDR); | |
2aa2cb9e KE |
159 | } |
160 | /* Scan no lines */ | |
0af28408 PM |
161 | __raw_writeb(0xff, PDDR); |
162 | __raw_writeb(0xff, PEDR); | |
2aa2cb9e KE |
163 | |
164 | /* Enable all scanlines */ | |
0af28408 PM |
165 | __raw_writew((dc_static | (0x5555 & 0xcc0c)),PDCR); |
166 | __raw_writew((ec_static | (0x5555 & 0xf0cf)),PECR); | |
2aa2cb9e KE |
167 | |
168 | /* Ignore extra keys and events */ | |
0af28408 PM |
169 | *s++ = __raw_readb(PGDR); |
170 | *s++ = __raw_readb(PHDR); | |
2aa2cb9e KE |
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", | |
d7b5247b | 258 | .owner = THIS_MODULE, |
2aa2cb9e KE |
259 | }, |
260 | .probe = jornada680kbd_probe, | |
1cb0aa88 | 261 | .remove = jornada680kbd_remove, |
2aa2cb9e | 262 | }; |
5146c84f | 263 | module_platform_driver(jornada680kbd_driver); |
2aa2cb9e KE |
264 | |
265 | MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>"); | |
266 | MODULE_DESCRIPTION("HP Jornada 620/660/680/690 Keyboard Driver"); | |
839cd310 | 267 | MODULE_LICENSE("GPL v2"); |
d7b5247b | 268 | MODULE_ALIAS("platform:jornada680_kbd"); |