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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
2aa2cb9e KE |
2 | /* |
3 | * drivers/input/keyboard/jornada680_kbd.c | |
4 | * | |
5 | * HP Jornada 620/660/680/690 scan keyboard platform driver | |
6 | * Copyright (C) 2007 Kristoffer Ericson <Kristoffer.Ericson@gmail.com> | |
7 | * | |
8 | * Based on hp680_keyb.c | |
9 | * Copyright (C) 2006 Paul Mundt | |
10 | * Copyright (C) 2005 Andriy Skulysh | |
11 | * Split from drivers/input/keyboard/hp600_keyb.c | |
12 | * Copyright (C) 2000 Yaegashi Takeshi (hp6xx kbd scan routine and translation table) | |
13 | * Copyright (C) 2000 Niibe Yutaka (HP620 Keyb translation table) | |
2aa2cb9e KE |
14 | */ |
15 | ||
50525cb3 | 16 | #include <linux/device.h> |
4c64681e | 17 | #include <linux/input.h> |
4c64681e | 18 | #include <linux/interrupt.h> |
2aa2cb9e | 19 | #include <linux/jiffies.h> |
4c64681e KE |
20 | #include <linux/kernel.h> |
21 | #include <linux/module.h> | |
2aa2cb9e | 22 | #include <linux/platform_device.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
2aa2cb9e KE |
24 | |
25 | #include <asm/delay.h> | |
26 | #include <asm/io.h> | |
27 | ||
28 | #define PCCR 0xa4000104 | |
29 | #define PDCR 0xa4000106 | |
30 | #define PECR 0xa4000108 | |
31 | #define PFCR 0xa400010a | |
32 | #define PCDR 0xa4000124 | |
33 | #define PDDR 0xa4000126 | |
34 | #define PEDR 0xa4000128 | |
35 | #define PFDR 0xa400012a | |
36 | #define PGDR 0xa400012c | |
37 | #define PHDR 0xa400012e | |
38 | #define PJDR 0xa4000130 | |
39 | #define PKDR 0xa4000132 | |
40 | #define PLDR 0xa4000134 | |
41 | ||
42 | static const unsigned short jornada_scancodes[] = { | |
4c64681e KE |
43 | /* PTD1 */ KEY_CAPSLOCK, KEY_MACRO, KEY_LEFTCTRL, 0, KEY_ESC, KEY_KP5, 0, 0, /* 1 -> 8 */ |
44 | KEY_F1, KEY_F2, KEY_F3, KEY_F8, KEY_F7, KEY_F6, KEY_F4, KEY_F5, /* 9 -> 16 */ | |
45 | /* PTD5 */ KEY_SLASH, KEY_APOSTROPHE, KEY_ENTER, 0, KEY_Z, 0, 0, 0, /* 17 -> 24 */ | |
46 | KEY_X, KEY_C, KEY_V, KEY_DOT, KEY_COMMA, KEY_M, KEY_B, KEY_N, /* 25 -> 32 */ | |
47 | /* PTD7 */ KEY_KP2, KEY_KP6, KEY_KP3, 0, 0, 0, 0, 0, /* 33 -> 40 */ | |
48 | KEY_F10, KEY_RO, KEY_F9, KEY_KP4, KEY_NUMLOCK, KEY_SCROLLLOCK, KEY_LEFTALT, KEY_HANJA, /* 41 -> 48 */ | |
49 | /* PTE0 */ KEY_KATAKANA, KEY_KP0, KEY_GRAVE, 0, KEY_FINANCE, 0, 0, 0, /* 49 -> 56 */ | |
50 | KEY_KPMINUS, KEY_HIRAGANA, KEY_SPACE, KEY_KPDOT, KEY_VOLUMEUP, 249, 0, 0, /* 57 -> 64 */ | |
51 | /* PTE1 */ KEY_SEMICOLON, KEY_RIGHTBRACE, KEY_BACKSLASH, 0, KEY_A, 0, 0, 0, /* 65 -> 72 */ | |
52 | KEY_S, KEY_D, KEY_F, KEY_L, KEY_K, KEY_J, KEY_G, KEY_H, /* 73 -> 80 */ | |
53 | /* PTE3 */ KEY_KP8, KEY_LEFTMETA, KEY_RIGHTSHIFT, 0, KEY_TAB, 0, 0, 0, /* 81 -> 88 */ | |
54 | 0, KEY_LEFTSHIFT, KEY_KP7, KEY_KP9, KEY_KP1, KEY_F11, KEY_KPPLUS, KEY_KPASTERISK, /* 89 -> 96 */ | |
55 | /* PTE6 */ KEY_P, KEY_LEFTBRACE, KEY_BACKSPACE, 0, KEY_Q, 0, 0, 0, /* 97 -> 104 */ | |
56 | KEY_W, KEY_E, KEY_R, KEY_O, KEY_I, KEY_U, KEY_T, KEY_Y, /* 105 -> 112 */ | |
57 | /* PTE7 */ KEY_0, KEY_MINUS, KEY_EQUAL, 0, KEY_1, 0, 0, 0, /* 113 -> 120 */ | |
58 | KEY_2, KEY_3, KEY_4, KEY_9, KEY_8, KEY_7, KEY_5, KEY_6, /* 121 -> 128 */ | |
2aa2cb9e KE |
59 | /* **** */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
60 | 0, 0, 0, 0, 0 | |
61 | }; | |
62 | ||
63 | #define JORNADA_SCAN_SIZE 18 | |
64 | ||
65 | struct jornadakbd { | |
c028c44f | 66 | struct input_dev *input; |
2aa2cb9e KE |
67 | unsigned short keymap[ARRAY_SIZE(jornada_scancodes)]; |
68 | unsigned char length; | |
69 | unsigned char old_scan[JORNADA_SCAN_SIZE]; | |
70 | unsigned char new_scan[JORNADA_SCAN_SIZE]; | |
71 | }; | |
72 | ||
73 | static void jornada_parse_kbd(struct jornadakbd *jornadakbd) | |
74 | { | |
c028c44f | 75 | struct input_dev *input_dev = jornadakbd->input; |
2aa2cb9e KE |
76 | unsigned short *keymap = jornadakbd->keymap; |
77 | unsigned int sync_me = 0; | |
78 | unsigned int i, j; | |
79 | ||
80 | for (i = 0; i < JORNADA_SCAN_SIZE; i++) { | |
81 | unsigned char new = jornadakbd->new_scan[i]; | |
82 | unsigned char old = jornadakbd->old_scan[i]; | |
83 | unsigned int xor = new ^ old; | |
84 | ||
85 | if (xor == 0) | |
86 | continue; | |
87 | ||
88 | for (j = 0; j < 8; j++) { | |
89 | unsigned int bit = 1 << j; | |
90 | if (xor & bit) { | |
91 | unsigned int scancode = (i << 3) + j; | |
92 | input_event(input_dev, | |
93 | EV_MSC, MSC_SCAN, scancode); | |
94 | input_report_key(input_dev, | |
95 | keymap[scancode], | |
96 | !(new & bit)); | |
97 | sync_me = 1; | |
98 | } | |
99 | } | |
100 | } | |
101 | ||
102 | if (sync_me) | |
103 | input_sync(input_dev); | |
104 | } | |
105 | ||
106 | static void jornada_scan_keyb(unsigned char *s) | |
107 | { | |
108 | int i; | |
109 | unsigned short ec_static, dc_static; /* = UINT16_t */ | |
110 | unsigned char matrix_switch[] = { | |
111 | 0xfd, 0xff, /* PTD1 PD(1) */ | |
112 | 0xdf, 0xff, /* PTD5 PD(5) */ | |
113 | 0x7f, 0xff, /* PTD7 PD(7) */ | |
114 | 0xff, 0xfe, /* PTE0 PE(0) */ | |
115 | 0xff, 0xfd, /* PTE1 PE(1) */ | |
116 | 0xff, 0xf7, /* PTE3 PE(3) */ | |
117 | 0xff, 0xbf, /* PTE6 PE(6) */ | |
118 | 0xff, 0x7f, /* PTE7 PE(7) */ | |
119 | }, *t = matrix_switch; | |
120 | /* PD(x) : | |
121 | 1. 0xcc0c & (1~(1 << (2*(x)+1))))) | |
122 | 2. (0xf0cf & 0xfffff) */ | |
123 | /* PE(x) : | |
124 | 1. 0xcc0c & 0xffff | |
125 | 2. 0xf0cf & (1~(1 << (2*(x)+1))))) */ | |
126 | unsigned short matrix_PDE[] = { | |
127 | 0xcc04, 0xf0cf, /* PD(1) */ | |
128 | 0xc40c, 0xf0cf, /* PD(5) */ | |
129 | 0x4c0c, 0xf0cf, /* PD(7) */ | |
130 | 0xcc0c, 0xf0cd, /* PE(0) */ | |
131 | 0xcc0c, 0xf0c7, /* PE(1) */ | |
132 | 0xcc0c, 0xf04f, /* PE(3) */ | |
133 | 0xcc0c, 0xd0cf, /* PE(6) */ | |
134 | 0xcc0c, 0x70cf, /* PE(7) */ | |
135 | }, *y = matrix_PDE; | |
136 | ||
137 | /* Save these control reg bits */ | |
0af28408 PM |
138 | dc_static = (__raw_readw(PDCR) & (~0xcc0c)); |
139 | ec_static = (__raw_readw(PECR) & (~0xf0cf)); | |
2aa2cb9e KE |
140 | |
141 | for (i = 0; i < 8; i++) { | |
142 | /* disable output for all but the one we want to scan */ | |
0af28408 PM |
143 | __raw_writew((dc_static | *y++), PDCR); |
144 | __raw_writew((ec_static | *y++), PECR); | |
2aa2cb9e KE |
145 | udelay(5); |
146 | ||
147 | /* Get scanline row */ | |
0af28408 PM |
148 | __raw_writeb(*t++, PDDR); |
149 | __raw_writeb(*t++, PEDR); | |
2aa2cb9e KE |
150 | udelay(50); |
151 | ||
152 | /* Read data */ | |
0af28408 PM |
153 | *s++ = __raw_readb(PCDR); |
154 | *s++ = __raw_readb(PFDR); | |
2aa2cb9e KE |
155 | } |
156 | /* Scan no lines */ | |
0af28408 PM |
157 | __raw_writeb(0xff, PDDR); |
158 | __raw_writeb(0xff, PEDR); | |
2aa2cb9e KE |
159 | |
160 | /* Enable all scanlines */ | |
0af28408 PM |
161 | __raw_writew((dc_static | (0x5555 & 0xcc0c)),PDCR); |
162 | __raw_writew((ec_static | (0x5555 & 0xf0cf)),PECR); | |
2aa2cb9e KE |
163 | |
164 | /* Ignore extra keys and events */ | |
0af28408 PM |
165 | *s++ = __raw_readb(PGDR); |
166 | *s++ = __raw_readb(PHDR); | |
2aa2cb9e KE |
167 | } |
168 | ||
c028c44f | 169 | static void jornadakbd680_poll(struct input_dev *input) |
2aa2cb9e | 170 | { |
c028c44f | 171 | struct jornadakbd *jornadakbd = input_get_drvdata(input); |
2aa2cb9e KE |
172 | |
173 | jornada_scan_keyb(jornadakbd->new_scan); | |
174 | jornada_parse_kbd(jornadakbd); | |
175 | memcpy(jornadakbd->old_scan, jornadakbd->new_scan, JORNADA_SCAN_SIZE); | |
176 | } | |
177 | ||
5298cc4c | 178 | static int jornada680kbd_probe(struct platform_device *pdev) |
2aa2cb9e KE |
179 | { |
180 | struct jornadakbd *jornadakbd; | |
2aa2cb9e KE |
181 | struct input_dev *input_dev; |
182 | int i, error; | |
183 | ||
50525cb3 HS |
184 | jornadakbd = devm_kzalloc(&pdev->dev, sizeof(struct jornadakbd), |
185 | GFP_KERNEL); | |
2aa2cb9e KE |
186 | if (!jornadakbd) |
187 | return -ENOMEM; | |
188 | ||
c028c44f DT |
189 | input_dev = devm_input_allocate_device(&pdev->dev); |
190 | if (!input_dev) { | |
191 | dev_err(&pdev->dev, "failed to allocate input device\n"); | |
50525cb3 | 192 | return -ENOMEM; |
2aa2cb9e KE |
193 | } |
194 | ||
c028c44f | 195 | jornadakbd->input = input_dev; |
2aa2cb9e KE |
196 | |
197 | memcpy(jornadakbd->keymap, jornada_scancodes, | |
198 | sizeof(jornadakbd->keymap)); | |
199 | ||
c028c44f | 200 | input_set_drvdata(input_dev, jornadakbd); |
2aa2cb9e KE |
201 | input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP); |
202 | input_dev->name = "HP Jornada 680 keyboard"; | |
203 | input_dev->phys = "jornadakbd/input0"; | |
204 | input_dev->keycode = jornadakbd->keymap; | |
205 | input_dev->keycodesize = sizeof(unsigned short); | |
206 | input_dev->keycodemax = ARRAY_SIZE(jornada_scancodes); | |
2aa2cb9e KE |
207 | input_dev->id.bustype = BUS_HOST; |
208 | ||
209 | for (i = 0; i < 128; i++) | |
210 | if (jornadakbd->keymap[i]) | |
211 | __set_bit(jornadakbd->keymap[i], input_dev->keybit); | |
212 | __clear_bit(KEY_RESERVED, input_dev->keybit); | |
213 | ||
214 | input_set_capability(input_dev, EV_MSC, MSC_SCAN); | |
215 | ||
c028c44f DT |
216 | error = input_setup_polling(input_dev, jornadakbd680_poll); |
217 | if (error) { | |
218 | dev_err(&pdev->dev, "failed to set up polling\n"); | |
219 | return error; | |
220 | } | |
221 | ||
222 | input_set_poll_interval(input_dev, 50 /* msec */); | |
223 | ||
224 | error = input_register_device(input_dev); | |
50525cb3 | 225 | if (error) { |
c028c44f | 226 | dev_err(&pdev->dev, "failed to register input device\n"); |
50525cb3 HS |
227 | return error; |
228 | } | |
2aa2cb9e KE |
229 | |
230 | return 0; | |
231 | } | |
232 | ||
233 | static struct platform_driver jornada680kbd_driver = { | |
234 | .driver = { | |
235 | .name = "jornada680_kbd", | |
236 | }, | |
237 | .probe = jornada680kbd_probe, | |
2aa2cb9e | 238 | }; |
5146c84f | 239 | module_platform_driver(jornada680kbd_driver); |
2aa2cb9e KE |
240 | |
241 | MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>"); | |
242 | MODULE_DESCRIPTION("HP Jornada 620/660/680/690 Keyboard Driver"); | |
839cd310 | 243 | MODULE_LICENSE("GPL v2"); |
d7b5247b | 244 | MODULE_ALIAS("platform:jornada680_kbd"); |