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/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "common.h"
#include "console.h"
#include "gpio.h"
#include "hooks.h"
#include "registers.h"
#include "task.h"
#include "util.h"
/*
* There's no way to trigger on both rising and falling edges, so force a
* compiler error if we try. The workaround is to use the pinmux to connect
* two GPIOs to the same input and configure each one for a separate edge.
*/
#undef GPIO_INT_BOTH
#define GPIO_INT_BOTH NOT_SUPPORTED_ON_CR50
#include "gpio_list.h"
/* Interrupt handler for button pushes */
void button_event(enum gpio_signal signal)
{
int v;
/* We have two GPIOs on the same input (one rising edge, one falling
* edge), so de-alias them */
if (signal >= GPIO_SW_N_)
signal -= (GPIO_SW_N_ - GPIO_SW_N);
v = gpio_get_level(signal);
ccprintf("Button %d = %d\n", signal, v);
gpio_set_level(signal - GPIO_SW_N + GPIO_LED_4, v);
}
/* Initialize board. */
static void board_init(void)
{
gpio_enable_interrupt(GPIO_SW_N);
gpio_enable_interrupt(GPIO_SW_S);
gpio_enable_interrupt(GPIO_SW_W);
gpio_enable_interrupt(GPIO_SW_E);
gpio_enable_interrupt(GPIO_SW_N_);
gpio_enable_interrupt(GPIO_SW_S_);
gpio_enable_interrupt(GPIO_SW_W_);
gpio_enable_interrupt(GPIO_SW_E_);
}
DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
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