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b0a4e1aa KE |
1 | /* |
2 | * drivers/input/keyboard/jornada720_kbd.c | |
3 | * | |
4 | * HP Jornada 720 keyboard platform driver | |
5 | * | |
6 | * Copyright (C) 2006/2007 Kristoffer Ericson <Kristoffer.Ericson@Gmail.com> | |
7 | * | |
8 | * Copyright (C) 2006 jornada 720 kbd driver by | |
9 | Filip Zyzniewsk <Filip.Zyzniewski@tefnet.plX | |
10 | * based on (C) 2004 jornada 720 kbd driver by | |
11 | Alex Lange <chicken@handhelds.org> | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License version 2 as | |
15 | * published by the Free Software Foundation. | |
16 | * | |
17 | */ | |
18 | #include <linux/device.h> | |
19 | #include <linux/errno.h> | |
b0a4e1aa KE |
20 | #include <linux/interrupt.h> |
21 | #include <linux/init.h> | |
22 | #include <linux/input.h> | |
23 | #include <linux/kernel.h> | |
24 | #include <linux/module.h> | |
25 | #include <linux/platform_device.h> | |
26 | ||
a09e64fb RK |
27 | #include <mach/jornada720.h> |
28 | #include <mach/hardware.h> | |
b0a4e1aa KE |
29 | |
30 | MODULE_AUTHOR("Kristoffer Ericson <Kristoffer.Ericson@gmail.com>"); | |
31 | MODULE_DESCRIPTION("HP Jornada 710/720/728 keyboard driver"); | |
839cd310 | 32 | MODULE_LICENSE("GPL v2"); |
b0a4e1aa KE |
33 | |
34 | static unsigned short jornada_std_keymap[128] = { /* ROW */ | |
35 | 0, KEY_ESC, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7, /* #1 */ | |
36 | KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_MUTE, /* -> */ | |
37 | 0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9, /* #2 */ | |
38 | KEY_0, KEY_MINUS, KEY_EQUAL,0, 0, 0, /* -> */ | |
39 | 0, KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T, KEY_Y, KEY_U, KEY_I, KEY_O, /* #3 */ | |
40 | KEY_P, KEY_BACKSLASH, KEY_BACKSPACE, 0, 0, 0, /* -> */ | |
41 | 0, KEY_A, KEY_S, KEY_D, KEY_F, KEY_G, KEY_H, KEY_J, KEY_K, KEY_L, /* #4 */ | |
42 | KEY_SEMICOLON, KEY_LEFTBRACE, KEY_RIGHTBRACE, 0, 0, 0, /* -> */ | |
43 | 0, KEY_Z, KEY_X, KEY_C, KEY_V, KEY_B, KEY_N, KEY_M, KEY_COMMA, /* #5 */ | |
44 | KEY_DOT, KEY_KPMINUS, KEY_APOSTROPHE, KEY_ENTER, 0, 0,0, /* -> */ | |
45 | 0, KEY_TAB, 0, KEY_LEFTSHIFT, 0, KEY_APOSTROPHE, 0, 0, 0, 0, /* #6 */ | |
46 | KEY_UP, 0, KEY_RIGHTSHIFT, 0, 0, 0,0, 0, 0, 0, 0, KEY_LEFTALT, KEY_GRAVE, /* -> */ | |
47 | 0, 0, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, 0,0, KEY_KPASTERISK, /* -> */ | |
48 | KEY_LEFTCTRL, 0, KEY_SPACE, 0, 0, 0, KEY_SLASH, KEY_DELETE, 0, 0, /* -> */ | |
49 | 0, 0, 0, KEY_POWER, /* -> */ | |
50 | }; | |
51 | ||
52 | struct jornadakbd { | |
53 | unsigned short keymap[ARRAY_SIZE(jornada_std_keymap)]; | |
54 | struct input_dev *input; | |
55 | }; | |
56 | ||
57 | static irqreturn_t jornada720_kbd_interrupt(int irq, void *dev_id) | |
58 | { | |
59 | struct platform_device *pdev = dev_id; | |
60 | struct jornadakbd *jornadakbd = platform_get_drvdata(pdev); | |
72f9df40 DT |
61 | struct input_dev *input = jornadakbd->input; |
62 | u8 count, kbd_data, scan_code; | |
b0a4e1aa KE |
63 | |
64 | /* startup ssp with spinlock */ | |
65 | jornada_ssp_start(); | |
66 | ||
67 | if (jornada_ssp_inout(GETSCANKEYCODE) != TXDUMMY) { | |
68 | printk(KERN_DEBUG | |
69 | "jornada720_kbd: " | |
70 | "GetKeycode command failed with ETIMEDOUT, " | |
71 | "flushed bus\n"); | |
72 | } else { | |
73 | /* How many keycodes are waiting for us? */ | |
74 | count = jornada_ssp_byte(TXDUMMY); | |
75 | ||
76 | /* Lets drag them out one at a time */ | |
77 | while (count--) { | |
78 | /* Exchange TxDummy for location (keymap[kbddata]) */ | |
79 | kbd_data = jornada_ssp_byte(TXDUMMY); | |
72f9df40 | 80 | scan_code = kbd_data & 0x7f; |
b0a4e1aa | 81 | |
72f9df40 DT |
82 | input_event(input, EV_MSC, MSC_SCAN, scan_code); |
83 | input_report_key(input, jornadakbd->keymap[scan_code], | |
b0a4e1aa | 84 | !(kbd_data & 0x80)); |
72f9df40 | 85 | input_sync(input); |
b0a4e1aa KE |
86 | } |
87 | } | |
88 | ||
89 | /* release spinlock and turn off ssp */ | |
90 | jornada_ssp_end(); | |
91 | ||
92 | return IRQ_HANDLED; | |
93 | }; | |
94 | ||
95 | static int __devinit jornada720_kbd_probe(struct platform_device *pdev) | |
96 | { | |
97 | struct jornadakbd *jornadakbd; | |
98 | struct input_dev *input_dev; | |
99 | int i, err; | |
100 | ||
101 | jornadakbd = kzalloc(sizeof(struct jornadakbd), GFP_KERNEL); | |
102 | input_dev = input_allocate_device(); | |
103 | if (!jornadakbd || !input_dev) { | |
104 | err = -ENOMEM; | |
105 | goto fail1; | |
106 | } | |
107 | ||
108 | platform_set_drvdata(pdev, jornadakbd); | |
109 | ||
110 | memcpy(jornadakbd->keymap, jornada_std_keymap, | |
111 | sizeof(jornada_std_keymap)); | |
112 | jornadakbd->input = input_dev; | |
113 | ||
114 | input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP); | |
115 | input_dev->name = "HP Jornada 720 keyboard"; | |
116 | input_dev->phys = "jornadakbd/input0"; | |
117 | input_dev->keycode = jornadakbd->keymap; | |
118 | input_dev->keycodesize = sizeof(unsigned short); | |
119 | input_dev->keycodemax = ARRAY_SIZE(jornada_std_keymap); | |
120 | input_dev->id.bustype = BUS_HOST; | |
121 | input_dev->dev.parent = &pdev->dev; | |
122 | ||
123 | for (i = 0; i < ARRAY_SIZE(jornadakbd->keymap); i++) | |
124 | __set_bit(jornadakbd->keymap[i], input_dev->keybit); | |
125 | __clear_bit(KEY_RESERVED, input_dev->keybit); | |
126 | ||
72f9df40 DT |
127 | input_set_capability(input_dev, EV_MSC, MSC_SCAN); |
128 | ||
b0a4e1aa KE |
129 | err = request_irq(IRQ_GPIO0, |
130 | jornada720_kbd_interrupt, | |
131 | IRQF_DISABLED | IRQF_TRIGGER_FALLING, | |
132 | "jornadakbd", pdev); | |
133 | if (err) { | |
134 | printk(KERN_INFO "jornadakbd720_kbd: Unable to grab IRQ\n"); | |
135 | goto fail1; | |
136 | } | |
137 | ||
138 | err = input_register_device(jornadakbd->input); | |
139 | if (err) | |
140 | goto fail2; | |
141 | ||
142 | return 0; | |
143 | ||
144 | fail2: /* IRQ, DEVICE, MEMORY */ | |
145 | free_irq(IRQ_GPIO0, pdev); | |
146 | fail1: /* DEVICE, MEMORY */ | |
147 | platform_set_drvdata(pdev, NULL); | |
148 | input_free_device(input_dev); | |
149 | kfree(jornadakbd); | |
150 | return err; | |
151 | }; | |
152 | ||
153 | static int __devexit jornada720_kbd_remove(struct platform_device *pdev) | |
154 | { | |
155 | struct jornadakbd *jornadakbd = platform_get_drvdata(pdev); | |
156 | ||
157 | free_irq(IRQ_GPIO0, pdev); | |
158 | platform_set_drvdata(pdev, NULL); | |
159 | input_unregister_device(jornadakbd->input); | |
160 | kfree(jornadakbd); | |
161 | ||
162 | return 0; | |
163 | } | |
164 | ||
d7b5247b KS |
165 | /* work with hotplug and coldplug */ |
166 | MODULE_ALIAS("platform:jornada720_kbd"); | |
167 | ||
b0a4e1aa KE |
168 | static struct platform_driver jornada720_kbd_driver = { |
169 | .driver = { | |
170 | .name = "jornada720_kbd", | |
d7b5247b | 171 | .owner = THIS_MODULE, |
b0a4e1aa KE |
172 | }, |
173 | .probe = jornada720_kbd_probe, | |
174 | .remove = __devexit_p(jornada720_kbd_remove), | |
175 | }; | |
176 | ||
177 | static int __init jornada720_kbd_init(void) | |
178 | { | |
179 | return platform_driver_register(&jornada720_kbd_driver); | |
180 | } | |
181 | ||
182 | static void __exit jornada720_kbd_exit(void) | |
183 | { | |
184 | platform_driver_unregister(&jornada720_kbd_driver); | |
185 | } | |
186 | ||
187 | module_init(jornada720_kbd_init); | |
188 | module_exit(jornada720_kbd_exit); |