[deliverable/linux.git] / drivers / input / keyboard / jornada720_kbd.c

/*
 * 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>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */
#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);
Commit	Line	Data
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;
72f9df40 DT	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,
99ff4d3a DT	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);
72f9df40 DT	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);
72f9df40 DT	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	}
b0a4e1aa KE	134
a8a7bdc5	135	return input_register_device(jornadakbd->input);
b0a4e1aa KE	136	};
b0a4e1aa KE	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);