[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / input / touchscreen / htcpen.c

/*
 * HTC Shift touchscreen driver
 *
 * Copyright (C) 2008 Pau Oliva Fora <pof@eslack.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/errno.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/isa.h>
#include <linux/ioport.h>
#include <linux/dmi.h>

MODULE_AUTHOR("Pau Oliva Fora <pau@eslack.org>");
MODULE_DESCRIPTION("HTC Shift touchscreen driver");
MODULE_LICENSE("GPL");

#define HTCPEN_PORT_IRQ_CLEAR	0x068
#define HTCPEN_PORT_INIT	0x06c
#define HTCPEN_PORT_INDEX	0x0250
#define HTCPEN_PORT_DATA	0x0251
#define HTCPEN_IRQ		3

#define DEVICE_ENABLE		0xa2
#define DEVICE_DISABLE		0xa3

#define X_INDEX			3
#define Y_INDEX			5
#define TOUCH_INDEX		0xb
#define LSB_XY_INDEX		0xc
#define X_AXIS_MAX		2040
#define Y_AXIS_MAX		2040

static bool invert_x;
module_param(invert_x, bool, 0644);
MODULE_PARM_DESC(invert_x, "If set, X axis is inverted");
static bool invert_y;
module_param(invert_y, bool, 0644);
MODULE_PARM_DESC(invert_y, "If set, Y axis is inverted");

static irqreturn_t htcpen_interrupt(int irq, void *handle)
{
	struct input_dev *htcpen_dev = handle;
	unsigned short x, y, xy;

	/* 0 = press; 1 = release */
	outb_p(TOUCH_INDEX, HTCPEN_PORT_INDEX);

	if (inb_p(HTCPEN_PORT_DATA)) {
		input_report_key(htcpen_dev, BTN_TOUCH, 0);
	} else {
		outb_p(X_INDEX, HTCPEN_PORT_INDEX);
		x = inb_p(HTCPEN_PORT_DATA);

		outb_p(Y_INDEX, HTCPEN_PORT_INDEX);
		y = inb_p(HTCPEN_PORT_DATA);

		outb_p(LSB_XY_INDEX, HTCPEN_PORT_INDEX);
		xy = inb_p(HTCPEN_PORT_DATA);

		/* get high resolution value of X and Y using LSB */
		x = X_AXIS_MAX - ((x * 8) + ((xy >> 4) & 0xf));
		y = (y * 8) + (xy & 0xf);
		if (invert_x)
			x = X_AXIS_MAX - x;
		if (invert_y)
			y = Y_AXIS_MAX - y;

		if (x != X_AXIS_MAX && x != 0) {
			input_report_key(htcpen_dev, BTN_TOUCH, 1);
			input_report_abs(htcpen_dev, ABS_X, x);
			input_report_abs(htcpen_dev, ABS_Y, y);
		}
	}

	input_sync(htcpen_dev);

	inb_p(HTCPEN_PORT_IRQ_CLEAR);

	return IRQ_HANDLED;
}

static int htcpen_open(struct input_dev *dev)
{
	outb_p(DEVICE_ENABLE, HTCPEN_PORT_INIT);

	return 0;
}

static void htcpen_close(struct input_dev *dev)
{
	outb_p(DEVICE_DISABLE, HTCPEN_PORT_INIT);
	synchronize_irq(HTCPEN_IRQ);
}

static int __devinit htcpen_isa_probe(struct device *dev, unsigned int id)
{
	struct input_dev *htcpen_dev;
	int err = -EBUSY;

	if (!request_region(HTCPEN_PORT_IRQ_CLEAR, 1, "htcpen")) {
		printk(KERN_ERR "htcpen: unable to get IO region 0x%x\n",
			HTCPEN_PORT_IRQ_CLEAR);
		goto request_region1_failed;
	}

	if (!request_region(HTCPEN_PORT_INIT, 1, "htcpen")) {
		printk(KERN_ERR "htcpen: unable to get IO region 0x%x\n",
			HTCPEN_PORT_INIT);
		goto request_region2_failed;
	}

	if (!request_region(HTCPEN_PORT_INDEX, 2, "htcpen")) {
		printk(KERN_ERR "htcpen: unable to get IO region 0x%x\n",
			HTCPEN_PORT_INDEX);
		goto request_region3_failed;
	}

	htcpen_dev = input_allocate_device();
	if (!htcpen_dev) {
		printk(KERN_ERR "htcpen: can't allocate device\n");
		err = -ENOMEM;
		goto input_alloc_failed;
	}

	htcpen_dev->name = "HTC Shift EC TouchScreen";
	htcpen_dev->id.bustype = BUS_ISA;

	htcpen_dev->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
	htcpen_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
	input_set_abs_params(htcpen_dev, ABS_X, 0, X_AXIS_MAX, 0, 0);
	input_set_abs_params(htcpen_dev, ABS_Y, 0, Y_AXIS_MAX, 0, 0);

	htcpen_dev->open = htcpen_open;
	htcpen_dev->close = htcpen_close;

	err = request_irq(HTCPEN_IRQ, htcpen_interrupt, 0, "htcpen",
			htcpen_dev);
	if (err) {
		printk(KERN_ERR "htcpen: irq busy\n");
		goto request_irq_failed;
	}

	inb_p(HTCPEN_PORT_IRQ_CLEAR);

	err = input_register_device(htcpen_dev);
	if (err)
		goto input_register_failed;

	dev_set_drvdata(dev, htcpen_dev);

	return 0;

 input_register_failed:
	free_irq(HTCPEN_IRQ, htcpen_dev);
 request_irq_failed:
	input_free_device(htcpen_dev);
 input_alloc_failed:
	release_region(HTCPEN_PORT_INDEX, 2);
 request_region3_failed:
	release_region(HTCPEN_PORT_INIT, 1);
 request_region2_failed:
	release_region(HTCPEN_PORT_IRQ_CLEAR, 1);
 request_region1_failed:
	return err;
}

static int __devexit htcpen_isa_remove(struct device *dev, unsigned int id)
{
	struct input_dev *htcpen_dev = dev_get_drvdata(dev);

	input_unregister_device(htcpen_dev);

	free_irq(HTCPEN_IRQ, htcpen_dev);

	release_region(HTCPEN_PORT_INDEX, 2);
	release_region(HTCPEN_PORT_INIT, 1);
	release_region(HTCPEN_PORT_IRQ_CLEAR, 1);

	dev_set_drvdata(dev, NULL);

	return 0;
}

#ifdef CONFIG_PM
static int htcpen_isa_suspend(struct device *dev, unsigned int n,
				pm_message_t state)
{
	outb_p(DEVICE_DISABLE, HTCPEN_PORT_INIT);

	return 0;
}

static int htcpen_isa_resume(struct device *dev, unsigned int n)
{
	outb_p(DEVICE_ENABLE, HTCPEN_PORT_INIT);

	return 0;
}
#endif

static struct isa_driver htcpen_isa_driver = {
	.probe		= htcpen_isa_probe,
	.remove		= __devexit_p(htcpen_isa_remove),
#ifdef CONFIG_PM
	.suspend	= htcpen_isa_suspend,
	.resume		= htcpen_isa_resume,
#endif
	.driver = {
		.owner	= THIS_MODULE,
		.name	= "htcpen",
	}
};

static struct dmi_system_id __initdata htcshift_dmi_table[] = {
	{
		.ident = "Shift",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "High Tech Computer Corp"),
			DMI_MATCH(DMI_PRODUCT_NAME, "Shift"),
		},
	},
	{ }
};
MODULE_DEVICE_TABLE(dmi, htcshift_dmi_table);

static int __init htcpen_isa_init(void)
{
	if (!dmi_check_system(htcshift_dmi_table))
		return -ENODEV;

	return isa_register_driver(&htcpen_isa_driver, 1);
}

static void __exit htcpen_isa_exit(void)
{
	isa_unregister_driver(&htcpen_isa_driver);
}

module_init(htcpen_isa_init);
module_exit(htcpen_isa_exit);
Commit	Line	Data
5a18c343 POF	1	/*
	2	* HTC Shift touchscreen driver
	3	*
	4	* Copyright (C) 2008 Pau Oliva Fora <pof@eslack.org>
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License version 2 as published
	8	* by the Free Software Foundation.
	9	*/
	10
	11	#include <linux/errno.h>
	12	#include <linux/kernel.h>
	13	#include <linux/module.h>
	14	#include <linux/input.h>
	15	#include <linux/interrupt.h>
	16	#include <linux/io.h>
	17	#include <linux/init.h>
	18	#include <linux/irq.h>
	19	#include <linux/isa.h>
	20	#include <linux/ioport.h>
	21	#include <linux/dmi.h>
	22
	23	MODULE_AUTHOR("Pau Oliva Fora <pau@eslack.org>");
	24	MODULE_DESCRIPTION("HTC Shift touchscreen driver");
	25	MODULE_LICENSE("GPL");
	26
	27	#define HTCPEN_PORT_IRQ_CLEAR 0x068
	28	#define HTCPEN_PORT_INIT 0x06c
	29	#define HTCPEN_PORT_INDEX 0x0250
	30	#define HTCPEN_PORT_DATA 0x0251
	31	#define HTCPEN_IRQ 3
	32
	33	#define DEVICE_ENABLE 0xa2
	34	#define DEVICE_DISABLE 0xa3
	35
	36	#define X_INDEX 3
	37	#define Y_INDEX 5
	38	#define TOUCH_INDEX 0xb
	39	#define LSB_XY_INDEX 0xc
	40	#define X_AXIS_MAX 2040
	41	#define Y_AXIS_MAX 2040
	42
90ab5ee9	43	static bool invert_x;
5a18c343 POF	44	module_param(invert_x, bool, 0644);
5a18c343 POF	45	MODULE_PARM_DESC(invert_x, "If set, X axis is inverted");
90ab5ee9	46	static bool invert_y;
5a18c343 POF	47	module_param(invert_y, bool, 0644);
	48	MODULE_PARM_DESC(invert_y, "If set, Y axis is inverted");
	49
5a18c343 POF	50	static irqreturn_t htcpen_interrupt(int irq, void *handle)
	51	{
	52	struct input_dev *htcpen_dev = handle;
	53	unsigned short x, y, xy;
	54
	55	/* 0 = press; 1 = release */
	56	outb_p(TOUCH_INDEX, HTCPEN_PORT_INDEX);
	57
	58	if (inb_p(HTCPEN_PORT_DATA)) {
	59	input_report_key(htcpen_dev, BTN_TOUCH, 0);
	60	} else {
	61	outb_p(X_INDEX, HTCPEN_PORT_INDEX);
	62	x = inb_p(HTCPEN_PORT_DATA);
	63
	64	outb_p(Y_INDEX, HTCPEN_PORT_INDEX);
	65	y = inb_p(HTCPEN_PORT_DATA);
	66
	67	outb_p(LSB_XY_INDEX, HTCPEN_PORT_INDEX);
	68	xy = inb_p(HTCPEN_PORT_DATA);
	69
	70	/* get high resolution value of X and Y using LSB */
	71	x = X_AXIS_MAX - ((x * 8) + ((xy >> 4) & 0xf));
	72	y = (y * 8) + (xy & 0xf);
	73	if (invert_x)
	74	x = X_AXIS_MAX - x;
	75	if (invert_y)
	76	y = Y_AXIS_MAX - y;
	77
	78	if (x != X_AXIS_MAX && x != 0) {
	79	input_report_key(htcpen_dev, BTN_TOUCH, 1);
	80	input_report_abs(htcpen_dev, ABS_X, x);
	81	input_report_abs(htcpen_dev, ABS_Y, y);
	82	}
	83	}
	84
	85	input_sync(htcpen_dev);
	86
	87	inb_p(HTCPEN_PORT_IRQ_CLEAR);
	88
	89	return IRQ_HANDLED;
	90	}
	91
	92	static int htcpen_open(struct input_dev *dev)
	93	{
	94	outb_p(DEVICE_ENABLE, HTCPEN_PORT_INIT);
	95
	96	return 0;
	97	}
	98
	99	static void htcpen_close(struct input_dev *dev)
	100	{
	101	outb_p(DEVICE_DISABLE, HTCPEN_PORT_INIT);
	102	synchronize_irq(HTCPEN_IRQ);
	103	}
	104
	105	static int __devinit htcpen_isa_probe(struct device *dev, unsigned int id)
	106	{
	107	struct input_dev *htcpen_dev;
	108	int err = -EBUSY;
	109
	110	if (!request_region(HTCPEN_PORT_IRQ_CLEAR, 1, "htcpen")) {
	111	printk(KERN_ERR "htcpen: unable to get IO region 0x%x\n",
	112	HTCPEN_PORT_IRQ_CLEAR);
	113	goto request_region1_failed;
114	}
115
116	if (!request_region(HTCPEN_PORT_INIT, 1, "htcpen")) {
117	printk(KERN_ERR "htcpen: unable to get IO region 0x%x\n",
118	HTCPEN_PORT_INIT);
119	goto request_region2_failed;
120	}
121
122	if (!request_region(HTCPEN_PORT_INDEX, 2, "htcpen")) {
123	printk(KERN_ERR "htcpen: unable to get IO region 0x%x\n",
124	HTCPEN_PORT_INDEX);
125	goto request_region3_failed;
126	}
127
128	htcpen_dev = input_allocate_device();
129	if (!htcpen_dev) {
130	printk(KERN_ERR "htcpen: can't allocate device\n");
131	err = -ENOMEM;
132	goto input_alloc_failed;
133	}
134
135	htcpen_dev->name = "HTC Shift EC TouchScreen";
136	htcpen_dev->id.bustype = BUS_ISA;
137
138	htcpen_dev->evbit[0] = BIT_MASK(EV_ABS) \| BIT_MASK(EV_KEY);
139	htcpen_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
140	input_set_abs_params(htcpen_dev, ABS_X, 0, X_AXIS_MAX, 0, 0);
141	input_set_abs_params(htcpen_dev, ABS_Y, 0, Y_AXIS_MAX, 0, 0);
142
143	htcpen_dev->open = htcpen_open;
144	htcpen_dev->close = htcpen_close;
145
146	err = request_irq(HTCPEN_IRQ, htcpen_interrupt, 0, "htcpen",
147	htcpen_dev);
148	if (err) {
149	printk(KERN_ERR "htcpen: irq busy\n");
150	goto request_irq_failed;
151	}
152
153	inb_p(HTCPEN_PORT_IRQ_CLEAR);
154
155	err = input_register_device(htcpen_dev);
156	if (err)
157	goto input_register_failed;
158
159	dev_set_drvdata(dev, htcpen_dev);
160
161	return 0;
162
163	input_register_failed:
164	free_irq(HTCPEN_IRQ, htcpen_dev);
165	request_irq_failed:
166	input_free_device(htcpen_dev);
167	input_alloc_failed:
168	release_region(HTCPEN_PORT_INDEX, 2);
169	request_region3_failed:
170	release_region(HTCPEN_PORT_INIT, 1);
171	request_region2_failed:
172	release_region(HTCPEN_PORT_IRQ_CLEAR, 1);
173	request_region1_failed:
174	return err;
175	}
176
177	static int __devexit htcpen_isa_remove(struct device *dev, unsigned int id)
178	{
179	struct input_dev *htcpen_dev = dev_get_drvdata(dev);
180
181	input_unregister_device(htcpen_dev);
182
183	free_irq(HTCPEN_IRQ, htcpen_dev);
184
185	release_region(HTCPEN_PORT_INDEX, 2);
186	release_region(HTCPEN_PORT_INIT, 1);
187	release_region(HTCPEN_PORT_IRQ_CLEAR, 1);
188
189	dev_set_drvdata(dev, NULL);
190
191	return 0;
192	}
193
194	#ifdef CONFIG_PM
195	static int htcpen_isa_suspend(struct device *dev, unsigned int n,
196	pm_message_t state)
197	{
198	outb_p(DEVICE_DISABLE, HTCPEN_PORT_INIT);
199
200	return 0;
201	}
202
203	static int htcpen_isa_resume(struct device *dev, unsigned int n)
204	{
205	outb_p(DEVICE_ENABLE, HTCPEN_PORT_INIT);
206
207	return 0;
208	}
209	#endif
210
211	static struct isa_driver htcpen_isa_driver = {
212	.probe = htcpen_isa_probe,
213	.remove = __devexit_p(htcpen_isa_remove),
214	#ifdef CONFIG_PM
215	.suspend = htcpen_isa_suspend,
216	.resume = htcpen_isa_resume,
217	#endif
218	.driver = {
219	.owner = THIS_MODULE,
220	.name = "htcpen",
221	}
222	};
223
224	static struct dmi_system_id __initdata htcshift_dmi_table[] = {
225	{
226	.ident = "Shift",
227	.matches = {
228	DMI_MATCH(DMI_SYS_VENDOR, "High Tech Computer Corp"),
229	DMI_MATCH(DMI_PRODUCT_NAME, "Shift"),
230	},
231	},
232	{ }
233	};
e23ed600	234	MODULE_DEVICE_TABLE(dmi, htcshift_dmi_table);
5a18c343 POF	235
	236	static int __init htcpen_isa_init(void)
	237	{
	238	if (!dmi_check_system(htcshift_dmi_table))
	239	return -ENODEV;
	240
	241	return isa_register_driver(&htcpen_isa_driver, 1);
	242	}
	243
	244	static void __exit htcpen_isa_exit(void)
	245	{
	246	isa_unregister_driver(&htcpen_isa_driver);
	247	}
	248
	249	module_init(htcpen_isa_init);
	250	module_exit(htcpen_isa_exit);