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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 | 20 | #include <linux/interrupt.h> |
b0a4e1aa KE |
21 | #include <linux/input.h> |
22 | #include <linux/kernel.h> | |
23 | #include <linux/module.h> | |
24 | #include <linux/platform_device.h> | |
5a0e3ad6 | 25 | #include <linux/slab.h> |
b0a4e1aa | 26 | |
a09e64fb | 27 | #include <mach/jornada720.h> |
b0a4e1aa KE |
28 | |
29 | MODULE_AUTHOR("Kristoffer Ericson <Kristoffer.Ericson@gmail.com>"); | |
30 | MODULE_DESCRIPTION("HP Jornada 710/720/728 keyboard driver"); | |
839cd310 | 31 | MODULE_LICENSE("GPL v2"); |
b0a4e1aa KE |
32 | |
33 | static unsigned short jornada_std_keymap[128] = { /* ROW */ | |
34 | 0, KEY_ESC, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7, /* #1 */ | |
35 | KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_MUTE, /* -> */ | |
36 | 0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9, /* #2 */ | |
37 | KEY_0, KEY_MINUS, KEY_EQUAL,0, 0, 0, /* -> */ | |
38 | 0, KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T, KEY_Y, KEY_U, KEY_I, KEY_O, /* #3 */ | |
39 | KEY_P, KEY_BACKSLASH, KEY_BACKSPACE, 0, 0, 0, /* -> */ | |
40 | 0, KEY_A, KEY_S, KEY_D, KEY_F, KEY_G, KEY_H, KEY_J, KEY_K, KEY_L, /* #4 */ | |
41 | KEY_SEMICOLON, KEY_LEFTBRACE, KEY_RIGHTBRACE, 0, 0, 0, /* -> */ | |
42 | 0, KEY_Z, KEY_X, KEY_C, KEY_V, KEY_B, KEY_N, KEY_M, KEY_COMMA, /* #5 */ | |
43 | KEY_DOT, KEY_KPMINUS, KEY_APOSTROPHE, KEY_ENTER, 0, 0,0, /* -> */ | |
44 | 0, KEY_TAB, 0, KEY_LEFTSHIFT, 0, KEY_APOSTROPHE, 0, 0, 0, 0, /* #6 */ | |
45 | KEY_UP, 0, KEY_RIGHTSHIFT, 0, 0, 0,0, 0, 0, 0, 0, KEY_LEFTALT, KEY_GRAVE, /* -> */ | |
46 | 0, 0, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, 0,0, KEY_KPASTERISK, /* -> */ | |
47 | KEY_LEFTCTRL, 0, KEY_SPACE, 0, 0, 0, KEY_SLASH, KEY_DELETE, 0, 0, /* -> */ | |
48 | 0, 0, 0, KEY_POWER, /* -> */ | |
49 | }; | |
50 | ||
51 | struct jornadakbd { | |
52 | unsigned short keymap[ARRAY_SIZE(jornada_std_keymap)]; | |
53 | struct input_dev *input; | |
54 | }; | |
55 | ||
56 | static irqreturn_t jornada720_kbd_interrupt(int irq, void *dev_id) | |
57 | { | |
58 | struct platform_device *pdev = dev_id; | |
59 | struct jornadakbd *jornadakbd = platform_get_drvdata(pdev); | |
72f9df40 DT |
60 | struct input_dev *input = jornadakbd->input; |
61 | u8 count, kbd_data, scan_code; | |
b0a4e1aa KE |
62 | |
63 | /* startup ssp with spinlock */ | |
64 | jornada_ssp_start(); | |
65 | ||
66 | if (jornada_ssp_inout(GETSCANKEYCODE) != TXDUMMY) { | |
99ff4d3a DT |
67 | dev_dbg(&pdev->dev, |
68 | "GetKeycode command failed with ETIMEDOUT, flushed bus\n"); | |
b0a4e1aa KE |
69 | } else { |
70 | /* How many keycodes are waiting for us? */ | |
71 | count = jornada_ssp_byte(TXDUMMY); | |
72 | ||
73 | /* Lets drag them out one at a time */ | |
74 | while (count--) { | |
75 | /* Exchange TxDummy for location (keymap[kbddata]) */ | |
76 | kbd_data = jornada_ssp_byte(TXDUMMY); | |
72f9df40 | 77 | scan_code = kbd_data & 0x7f; |
b0a4e1aa | 78 | |
72f9df40 DT |
79 | input_event(input, EV_MSC, MSC_SCAN, scan_code); |
80 | input_report_key(input, jornadakbd->keymap[scan_code], | |
b0a4e1aa | 81 | !(kbd_data & 0x80)); |
72f9df40 | 82 | input_sync(input); |
b0a4e1aa KE |
83 | } |
84 | } | |
85 | ||
86 | /* release spinlock and turn off ssp */ | |
87 | jornada_ssp_end(); | |
88 | ||
89 | return IRQ_HANDLED; | |
90 | }; | |
91 | ||
5298cc4c | 92 | static int jornada720_kbd_probe(struct platform_device *pdev) |
b0a4e1aa KE |
93 | { |
94 | struct jornadakbd *jornadakbd; | |
95 | struct input_dev *input_dev; | |
0f631d87 RK |
96 | int i, err, irq; |
97 | ||
98 | irq = platform_get_irq(pdev, 0); | |
99 | if (irq <= 0) | |
100 | return irq < 0 ? irq : -EINVAL; | |
b0a4e1aa | 101 | |
a8a7bdc5 RK |
102 | jornadakbd = devm_kzalloc(&pdev->dev, sizeof(*jornadakbd), GFP_KERNEL); |
103 | input_dev = devm_input_allocate_device(&pdev->dev); | |
104 | if (!jornadakbd || !input_dev) | |
105 | return -ENOMEM; | |
b0a4e1aa KE |
106 | |
107 | platform_set_drvdata(pdev, jornadakbd); | |
108 | ||
109 | memcpy(jornadakbd->keymap, jornada_std_keymap, | |
110 | sizeof(jornada_std_keymap)); | |
111 | jornadakbd->input = input_dev; | |
112 | ||
113 | input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP); | |
114 | input_dev->name = "HP Jornada 720 keyboard"; | |
115 | input_dev->phys = "jornadakbd/input0"; | |
116 | input_dev->keycode = jornadakbd->keymap; | |
117 | input_dev->keycodesize = sizeof(unsigned short); | |
118 | input_dev->keycodemax = ARRAY_SIZE(jornada_std_keymap); | |
119 | input_dev->id.bustype = BUS_HOST; | |
120 | input_dev->dev.parent = &pdev->dev; | |
121 | ||
122 | for (i = 0; i < ARRAY_SIZE(jornadakbd->keymap); i++) | |
123 | __set_bit(jornadakbd->keymap[i], input_dev->keybit); | |
124 | __clear_bit(KEY_RESERVED, input_dev->keybit); | |
125 | ||
72f9df40 DT |
126 | input_set_capability(input_dev, EV_MSC, MSC_SCAN); |
127 | ||
0f631d87 | 128 | err = devm_request_irq(&pdev->dev, irq, jornada720_kbd_interrupt, |
a8a7bdc5 | 129 | IRQF_TRIGGER_FALLING, "jornadakbd", pdev); |
b0a4e1aa | 130 | if (err) { |
0f631d87 | 131 | dev_err(&pdev->dev, "unable to grab IRQ%d: %d\n", irq, err); |
a8a7bdc5 | 132 | return err; |
b0a4e1aa KE |
133 | } |
134 | ||
a8a7bdc5 | 135 | return input_register_device(jornadakbd->input); |
b0a4e1aa KE |
136 | }; |
137 | ||
d7b5247b KS |
138 | /* work with hotplug and coldplug */ |
139 | MODULE_ALIAS("platform:jornada720_kbd"); | |
140 | ||
b0a4e1aa KE |
141 | static struct platform_driver jornada720_kbd_driver = { |
142 | .driver = { | |
143 | .name = "jornada720_kbd", | |
144 | }, | |
145 | .probe = jornada720_kbd_probe, | |
b0a4e1aa | 146 | }; |
5146c84f | 147 | module_platform_driver(jornada720_kbd_driver); |