1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
/* Copyright 2016 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 "gpio_chip.h"
#include "hooks.h"
#include "registers.h"
#include "task.h"
#include "util.h"
int gpio_required_clocks(void)
{
const int gpio_ports_used = (0
# define GPIO(name, pin, flags) pin
# define GPIO_INT(name, pin, flags, signal) pin
# define ALTERNATE(pinmask, function, module, flagz) pinmask
# define PIN(port, index) | STM32_RCC_AHB1ENR_GPIO_PORT ## port
# define PIN_MASK(port, mask) PIN(port, 0)
# include "gpio.wrap"
);
/*
* If no ports are in use, then system_is_reboot_warm
* may not be valid.
*/
ASSERT(gpio_ports_used);
return gpio_ports_used;
}
void gpio_enable_clocks(void)
{
/* Enable only ports that are referenced in the gpio.inc */
STM32_RCC_AHB1ENR |= gpio_required_clocks();
/* 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);
task_enable_irq(STM32_IRQ_EXTI1);
task_enable_irq(STM32_IRQ_EXTI2);
task_enable_irq(STM32_IRQ_EXTI3);
task_enable_irq(STM32_IRQ_EXTI4);
task_enable_irq(STM32_IRQ_EXTI9_5);
task_enable_irq(STM32_IRQ_EXTI15_10);
}
DECLARE_HOOK(HOOK_INIT, gpio_init, HOOK_PRIO_DEFAULT);
static void _gpio_interrupt(void)
{
gpio_interrupt();
}
DECLARE_IRQ(STM32_IRQ_EXTI0, _gpio_interrupt, 1);
DECLARE_IRQ(STM32_IRQ_EXTI1, _gpio_interrupt, 1);
DECLARE_IRQ(STM32_IRQ_EXTI2, _gpio_interrupt, 1);
DECLARE_IRQ(STM32_IRQ_EXTI3, _gpio_interrupt, 1);
DECLARE_IRQ(STM32_IRQ_EXTI4, _gpio_interrupt, 1);
DECLARE_IRQ(STM32_IRQ_EXTI9_5, _gpio_interrupt, 1);
DECLARE_IRQ(STM32_IRQ_EXTI15_10, _gpio_interrupt, 1);
#include "gpio-f0-l.c"
|
