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/*
* Keyboard driver for Armzone QT2410
*
* (C) 2006 by Openmoko, Inc.
* Author: Harald Welte <laforge@openmoko.org>
* All rights reserved.
*
* 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/delay.h>
#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/jiffies.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <asm/hardware.h>
#include <asm/arch/gta01.h>
struct gta01kbd {
struct input_dev *input;
unsigned int suspended;
unsigned long suspend_jiffies;
};
static irqreturn_t gta01kbd_interrupt(int irq, void *dev_id)
{
struct gta01kbd *gta01kbd_data = dev_id;
/* FIXME: use GPIO from platform_dev resources */
if (s3c2410_gpio_getpin(S3C2410_GPF0))
input_report_key(gta01kbd_data->input, KEY_PHONE, 1);
else
input_report_key(gta01kbd_data->input, KEY_PHONE, 0);
input_sync(gta01kbd_data->input);
return IRQ_HANDLED;
}
#ifdef CONFIG_PM
static int gta01kbd_suspend(struct platform_device *dev, pm_message_t state)
{
struct gta01kbd *gta01kbd = platform_get_drvdata(dev);
gta01kbd->suspended = 1;
return 0;
}
static int gta01kbd_resume(struct platform_device *dev)
{
struct gta01kbd *gta01kbd = platform_get_drvdata(dev);
gta01kbd->suspended = 0;
return 0;
}
#else
#define gta01kbd_suspend NULL
#define gta01kbd_resume NULL
#endif
static int gta01kbd_probe(struct platform_device *pdev)
{
struct gta01kbd *gta01kbd;
struct input_dev *input_dev;
int irq_911;
int rc = 0;
gta01kbd = kzalloc(sizeof(struct gta01kbd), GFP_KERNEL);
if (!gta01kbd) {
rc = -ENOMEM;
goto bail;
}
input_dev = input_allocate_device();
if (!gta01kbd || !input_dev) {
rc = -ENOMEM;
goto bail_free;
}
if (pdev->resource[0].flags != 0) {\
rc = -EINVAL;
goto bail_free_dev;
}
irq_911 = s3c2410_gpio_getirq(pdev->resource[0].start);
if (irq_911 < 0) {
rc = -EINVAL;
goto bail_free_dev;
}
platform_set_drvdata(pdev, gta01kbd);
gta01kbd->input = input_dev;
#if 0
spin_lock_init(>a01kbd->lock);
/* Init Keyboard rescan timer */
init_timer(&corgikbd->timer);
corgikbd->timer.function = corgikbd_timer_callback;
corgikbd->timer.data = (unsigned long) corgikbd;
/* Init Hinge Timer */
init_timer(&corgikbd->htimer);
corgikbd->htimer.function = corgikbd_hinge_timer;
corgikbd->htimer.data = (unsigned long) corgikbd;
corgikbd->suspend_jiffies=jiffies;
memcpy(corgikbd->keycode, corgikbd_keycode, sizeof(corgikbd->keycode));
#endif
input_dev->name = "QT2410 Buttons";
input_dev->phys = "qt2410kbd/input0";
input_dev->id.bustype = BUS_HOST;
input_dev->id.vendor = 0x0001;
input_dev->id.product = 0x0001;
input_dev->id.version = 0x0100;
input_dev->evbit[0] = BIT(EV_KEY);
#if 0
input_dev->keycode = gta01kbd->keycode;
input_dev->keycodesize = sizeof(unsigned char);
input_dev->keycodemax = ARRAY_SIZE(corgikbd_keycode);
for (i = 0; i < ARRAY_SIZE(corgikbd_keycode); i++)
set_bit(corgikbd->keycode[i], input_dev->keybit);
clear_bit(0, input_dev->keybit);
set_bit(SW_LID, input_dev->swbit);
set_bit(SW_TABLET_MODE, input_dev->swbit);
set_bit(SW_HEADPHONE_INSERT, input_dev->swbit);
#endif
rc = input_register_device(gta01kbd->input);
if (rc)
goto bail_free_dev;
s3c2410_gpio_cfgpin(S3C2410_GPF0, S3C2410_GPF0_EINT0);
if (request_irq(irq_911, gta01kbd_interrupt,
IRQF_DISABLED | IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING, "qt2410kbd_eint0", gta01kbd))
printk(KERN_WARNING "gta01kbd: Can't get IRQ\n");
enable_irq_wake(irq_911);
/* FIXME: headphone insert */
#if 0
mod_timer(&corgikbd->htimer, jiffies + msecs_to_jiffies(HINGE_SCAN_INTERVAL));
/* Setup sense interrupts - RisingEdge Detect, sense lines as inputs */
for (i = 0; i < CORGI_KEY_SENSE_NUM; i++) {
pxa_gpio_mode(CORGI_GPIO_KEY_SENSE(i) | GPIO_IN);
if (request_irq(CORGI_IRQ_GPIO_KEY_SENSE(i), corgikbd_interrupt,
SA_INTERRUPT | SA_TRIGGER_RISING,
"corgikbd", corgikbd))
printk(KERN_WARNING "corgikbd: Can't get IRQ: %d!\n", i);
}
/* Set Strobe lines as outputs - set high */
for (i = 0; i < CORGI_KEY_STROBE_NUM; i++)
pxa_gpio_mode(CORGI_GPIO_KEY_STROBE(i) | GPIO_OUT | GPIO_DFLT_HIGH);
/* Setup the headphone jack as an input */
pxa_gpio_mode(CORGI_GPIO_AK_INT | GPIO_IN);
#endif
return 0;
bail_free_dev:
input_free_device(input_dev);
bail_free:
kfree(gta01kbd);
bail:
return rc;
}
static int gta01kbd_remove(struct platform_device *pdev)
{
struct gta01kbd *gta01kbd = platform_get_drvdata(pdev);
free_irq(s3c2410_gpio_getirq(pdev->resource[0].start), gta01kbd);
#if 0
int i;
for (i = 0; i < CORGI_KEY_SENSE_NUM; i++)
free_irq(CORGI_IRQ_GPIO_KEY_SENSE(i), corgikbd);
del_timer_sync(&corgikbd->htimer);
del_timer_sync(&corgikbd->timer);
#endif
input_unregister_device(gta01kbd->input);
kfree(gta01kbd);
return 0;
}
static struct platform_driver gta01kbd_driver = {
.probe = gta01kbd_probe,
.remove = gta01kbd_remove,
.suspend = gta01kbd_suspend,
.resume = gta01kbd_resume,
.driver = {
.name = "qt2410-button",
},
};
static int __devinit gta01kbd_init(void)
{
return platform_driver_register(>a01kbd_driver);
}
static void __exit gta01kbd_exit(void)
{
platform_driver_unregister(>a01kbd_driver);
}
module_init(gta01kbd_init);
module_exit(gta01kbd_exit);
MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
MODULE_DESCRIPTION("Armzone QT2410 Buttons Driver");
MODULE_LICENSE("GPL");
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