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/* Copyright (c) 2012 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.
*/
/* Mock GPIO module for Chrome EC */
#include "console.h"
#include "gpio.h"
#include "util.h"
static int8_t mock_value[GPIO_COUNT] = {0};
static int8_t mock_gpio_im[GPIO_COUNT] = {0};
int gpio_pre_init(void)
{
/* Nothing to do */
return EC_SUCCESS;
}
void gpio_set_alternate_function(int port, int mask, int func)
{
/* Not implemented */
return;
}
const char *gpio_get_name(enum gpio_signal signal)
{
return gpio_list[signal].name;
}
int gpio_get_level(enum gpio_signal signal)
{
return mock_value[signal] ? 1 : 0;
}
int gpio_set_level(enum gpio_signal signal, int value)
{
mock_value[signal] = value;
return EC_SUCCESS;
}
int gpio_set_flags(enum gpio_signal signal, int flags)
{
/* Not implemented */
return EC_SUCCESS;
}
int gpio_enable_interrupt(enum gpio_signal signal)
{
const struct gpio_info *g = gpio_list + signal;
/* Fail if no interrupt handler */
if (!g->irq_handler)
return EC_ERROR_UNKNOWN;
mock_gpio_im[signal] = 1;
return EC_SUCCESS;
}
/* Find a GPIO signal by name. Returns the signal index, or GPIO_COUNT if
* no match. */
static enum gpio_signal find_signal_by_name(const char *name)
{
const struct gpio_info *g = gpio_list;
int i;
if (!name || !*name)
return GPIO_COUNT;
for (i = 0; i < GPIO_COUNT; i++, g++) {
if (!strcasecmp(name, g->name))
return i;
}
return GPIO_COUNT;
}
static int command_gpio_mock(int argc, char **argv)
{
char *e;
int v, i;
const struct gpio_info *g;
if (argc < 3)
return EC_ERROR_PARAM_COUNT;
i = find_signal_by_name(argv[1]);
if (i == GPIO_COUNT)
return EC_ERROR_PARAM1;
g = gpio_list + i;
v = strtoi(argv[2], &e, 0);
if (*e)
return EC_ERROR_PARAM2;
gpio_set_level(i, v);
if (g->irq_handler && mock_gpio_im[i])
g->irq_handler(i);
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(gpiomock, command_gpio_mock,
"name <0 | 1>",
"Mock a GPIO input",
NULL);
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