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/* Copyright 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.
*/
/* GPIO module for Chrome EC */
#include "clock.h"
#include "common.h"
#include "gpio.h"
#include "hooks.h"
#include "registers.h"
#include "task.h"
#include "util.h"
void gpio_enable_clocks(void)
{
/*
* Enable all GPIOs clocks
*
* TODO(crosbug.com/p/23770): only enable the banks we need to,
* and support disabling some of them in low-power idle.
*/
STM32_RCC_AHBENR |= 0x7e0000;
/* Delay 1 AHB clock cycle after the clock is enabled */
clock_wait_bus_cycles(BUS_AHB, 1);
}
static void gpio_init(void)
{
/* Enable IRQs now that pins are set up */
task_enable_irq(STM32_IRQ_EXTI0_1);
task_enable_irq(STM32_IRQ_EXTI2_3);
task_enable_irq(STM32_IRQ_EXTI4_15);
}
DECLARE_HOOK(HOOK_INIT, gpio_init, HOOK_PRIO_DEFAULT);
#include "gpio-f0-l.c"
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