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/*
* Copyright (c) 2014 MEIZU Technology Co., Ltd.
* http://www.meizu.com
*
* 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 "keys_m7x.h"
static struct gpio_button_data *gpio_bdata[GPIO_MAX] = {NULL,};
struct gpio_button_data **get_gpio_bdata(void)
{
return gpio_bdata;
}
struct gpio_button_data *get_gpio_sbdata(GPIO_INDEX which_gpio)
{
return gpio_bdata[which_gpio];
}
void set_gpio_bdata(struct gpio_button_data *bdata, GPIO_INDEX which_gpio)
{
struct gpio_button_data **gbdata = get_gpio_bdata();
/*
* related to enum GPIO_INDEX
*/
#ifdef KEYPAD_DEBUG
printk("[Hall] %s: key:%s, gpio:%d\n", __func__, bdata->button->desc, which_gpio);
#endif
switch( which_gpio ) {
case GPIO_HALL:
gbdata[which_gpio] = bdata;
break;
default:
printk("[Hall] %s: index:%d is not within the scope of [0,%d]\n",
__func__, which_gpio, GPIO_MAX);
break;
}
}
static void kpd_hall_irq_handler(void)
{
struct gpio_button_data *bdata = get_gpio_sbdata(GPIO_HALL);
if(!bdata) {
mt_eint_unmask(M7X_HALL_IRQ_NUM);
printk("[Hall] %s error: hall key irq is not init, bdata==NULL!\n",__func__);
} else {
#ifdef DELAYED_WORK
mt_eint_set_polarity(bdata->button->irq, atomic_read(&bdata->key_pressed)==CLOSED?LOW:HIGH);
schedule_work(&bdata->work);
#else
mod_timer(&bdata->timer,
jiffies + msecs_to_jiffies(bdata->timer_debounce));
#endif
}
}
/*
* HALL:
* Set EINT mode, input, enable pull up
* set irq debounce
* Register and enable interrupt(trigger by low level)
*/
void meizu_hall_init(void)
{
/* set hall EINT mode, input, enable pull up */
mt_set_gpio_mode(M7X_HALL_KEY_GPIO, M7X_HALL_KEY_PIN_EINT_MODE);
mt_set_gpio_dir(M7X_HALL_KEY_GPIO, GPIO_DIR_IN);
mt_set_gpio_pull_enable(M7X_HALL_KEY_GPIO, GPIO_PULL_ENABLE);
mt_set_gpio_pull_select(M7X_HALL_KEY_GPIO, GPIO_PULL_UP);
/* set hall irq debounce */
mt_eint_set_sens(M7X_HALL_IRQ_NUM, MT_LEVEL_SENSITIVE);
mt_eint_set_hw_debounce(M7X_HALL_IRQ_NUM, M7X_HALL_IRQ_DEBOUNCE_CN);
/* register hall irq */
mt_eint_registration(M7X_HALL_IRQ_NUM, M7X_HALL_IRQ_TYPE, kpd_hall_irq_handler, 0);
mt_eint_unmask(M7X_HALL_IRQ_NUM);
#ifdef KEYPAD_DEBUG
printk("[Hall] %s\n", __func__);
#endif
}
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