aboutsummaryrefslogtreecommitdiff
path: root/drivers/input/keyboard/jornada720_kbd.c
blob: cd9af5221c3de87edd95f34fdbaa8dc935f0ddac (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
// SPDX-License-Identifier: GPL-2.0-only
/*
 * drivers/input/keyboard/jornada720_kbd.c
 *
 * HP Jornada 720 keyboard platform driver
 *
 * Copyright (C) 2006/2007 Kristoffer Ericson <Kristoffer.Ericson@Gmail.com>
 *
 *    Copyright (C) 2006 jornada 720 kbd driver by
		Filip Zyzniewsk <Filip.Zyzniewski@tefnet.plX
 *     based on (C) 2004 jornada 720 kbd driver by
		Alex Lange <chicken@handhelds.org>
 */
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/input.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>

#include <mach/jornada720.h>

MODULE_AUTHOR("Kristoffer Ericson <Kristoffer.Ericson@gmail.com>");
MODULE_DESCRIPTION("HP Jornada 710/720/728 keyboard driver");
MODULE_LICENSE("GPL v2");

static unsigned short jornada_std_keymap[128] = {					/* ROW */
	0, KEY_ESC, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7,		/* #1  */
	KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_MUTE,	/*  -> */
	0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9,		/* #2  */
	KEY_0, KEY_MINUS, KEY_EQUAL,0, 0, 0,						/*  -> */
	0, KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T, KEY_Y, KEY_U, KEY_I, KEY_O,		/* #3  */
	KEY_P, KEY_BACKSLASH, KEY_BACKSPACE, 0, 0, 0,					/*  -> */
	0, KEY_A, KEY_S, KEY_D, KEY_F, KEY_G, KEY_H, KEY_J, KEY_K, KEY_L,		/* #4  */
	KEY_SEMICOLON, KEY_LEFTBRACE, KEY_RIGHTBRACE, 0, 0, 0,				/*  -> */
	0, KEY_Z, KEY_X, KEY_C, KEY_V, KEY_B, KEY_N, KEY_M, KEY_COMMA,			/* #5  */
	KEY_DOT, KEY_KPMINUS, KEY_APOSTROPHE, KEY_ENTER, 0, 0,0,			/*  -> */
	0, KEY_TAB, 0, KEY_LEFTSHIFT, 0, KEY_APOSTROPHE, 0, 0, 0, 0,			/* #6  */
	KEY_UP, 0, KEY_RIGHTSHIFT, 0, 0, 0,0, 0, 0, 0, 0, KEY_LEFTALT, KEY_GRAVE,	/*  -> */
	0, 0, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, 0,0, KEY_KPASTERISK,		/*  -> */
	KEY_LEFTCTRL, 0, KEY_SPACE, 0, 0, 0, KEY_SLASH, KEY_DELETE, 0, 0,		/*  -> */
	0, 0, 0, KEY_POWER,								/*  -> */
};

struct jornadakbd {
	unsigned short keymap[ARRAY_SIZE(jornada_std_keymap)];
	struct input_dev *input;
};

static irqreturn_t jornada720_kbd_interrupt(int irq, void *dev_id)
{
	struct platform_device *pdev = dev_id;
	struct jornadakbd *jornadakbd = platform_get_drvdata(pdev);
	struct input_dev *input = jornadakbd->input;
	u8 count, kbd_data, scan_code;

	/* startup ssp with spinlock */
	jornada_ssp_start();

	if (jornada_ssp_inout(GETSCANKEYCODE) != TXDUMMY) {
		dev_dbg(&pdev->dev,
			"GetKeycode command failed with ETIMEDOUT, flushed bus\n");
	} else {
		/* How many keycodes are waiting for us? */
		count = jornada_ssp_byte(TXDUMMY);

		/* Lets drag them out one at a time */
		while (count--) {
			/* Exchange TxDummy for location (keymap[kbddata]) */
			kbd_data = jornada_ssp_byte(TXDUMMY);
			scan_code = kbd_data & 0x7f;

			input_event(input, EV_MSC, MSC_SCAN, scan_code);
			input_report_key(input, jornadakbd->keymap[scan_code],
					 !(kbd_data & 0x80));
			input_sync(input);
		}
	}

	/* release spinlock and turn off ssp */
	jornada_ssp_end();

	return IRQ_HANDLED;
};

static int jornada720_kbd_probe(struct platform_device *pdev)
{
	struct jornadakbd *jornadakbd;
	struct input_dev *input_dev;
	int i, err, irq;

	irq = platform_get_irq(pdev, 0);
	if (irq <= 0)
		return irq < 0 ? irq : -EINVAL;

	jornadakbd = devm_kzalloc(&pdev->dev, sizeof(*jornadakbd), GFP_KERNEL);
	input_dev = devm_input_allocate_device(&pdev->dev);
	if (!jornadakbd || !input_dev)
		return -ENOMEM;

	platform_set_drvdata(pdev, jornadakbd);

	memcpy(jornadakbd->keymap, jornada_std_keymap,
		sizeof(jornada_std_keymap));
	jornadakbd->input = input_dev;

	input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
	input_dev->name = "HP Jornada 720 keyboard";
	input_dev->phys = "jornadakbd/input0";
	input_dev->keycode = jornadakbd->keymap;
	input_dev->keycodesize = sizeof(unsigned short);
	input_dev->keycodemax = ARRAY_SIZE(jornada_std_keymap);
	input_dev->id.bustype = BUS_HOST;
	input_dev->dev.parent = &pdev->dev;

	for (i = 0; i < ARRAY_SIZE(jornadakbd->keymap); i++)
		__set_bit(jornadakbd->keymap[i], input_dev->keybit);
	__clear_bit(KEY_RESERVED, input_dev->keybit);

	input_set_capability(input_dev, EV_MSC, MSC_SCAN);

	err = devm_request_irq(&pdev->dev, irq, jornada720_kbd_interrupt,
			       IRQF_TRIGGER_FALLING, "jornadakbd", pdev);
	if (err) {
		dev_err(&pdev->dev, "unable to grab IRQ%d: %d\n", irq, err);
		return err;
	}

	return input_register_device(jornadakbd->input);
};

/* work with hotplug and coldplug */
MODULE_ALIAS("platform:jornada720_kbd");

static struct platform_driver jornada720_kbd_driver = {
	.driver  = {
		.name    = "jornada720_kbd",
	 },
	.probe   = jornada720_kbd_probe,
};
module_platform_driver(jornada720_kbd_driver);