59 lines
1.2 KiB
C
59 lines
1.2 KiB
C
|
/*
|
||
|
|
* (C) Copyright 2017 Rockchip Electronics Co., Ltd
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: GPL-2.0+
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <common.h>
|
||
|
|
#include <dm.h>
|
||
|
|
#include <key.h>
|
||
|
|
|
||
|
|
static int gpio_key_ofdata_to_platdata(struct udevice *dev)
|
||
|
|
{
|
||
|
|
struct dm_key_uclass_platdata *uc_key;
|
||
|
|
|
||
|
|
uc_key = dev_get_uclass_platdata(dev);
|
||
|
|
if (!uc_key)
|
||
|
|
return -ENXIO;
|
||
|
|
|
||
|
|
uc_key->type = GPIO_KEY;
|
||
|
|
uc_key->name = dev_read_string(dev, "label");
|
||
|
|
uc_key->code = dev_read_u32_default(dev, "linux,code", -ENODATA);
|
||
|
|
if (uc_key->code < 0) {
|
||
|
|
printf("%s: read 'linux,code' failed\n", uc_key->name);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (dev_read_u32_array(dev, "gpios",
|
||
|
|
uc_key->gpios, ARRAY_SIZE(uc_key->gpios))) {
|
||
|
|
printf("%s: read 'gpios' failed\n", uc_key->name);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
U_BOOT_DRIVER(gpio_key) = {
|
||
|
|
.name = "gpio_key",
|
||
|
|
.id = UCLASS_KEY,
|
||
|
|
.ofdata_to_platdata = gpio_key_ofdata_to_platdata,
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Key Bus */
|
||
|
|
static int gpio_key_bus_bind(struct udevice *dev)
|
||
|
|
{
|
||
|
|
return key_bind_children(dev, "gpio_key");
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct udevice_id gpio_key_bus_match[] = {
|
||
|
|
{ .compatible = "gpio-keys" },
|
||
|
|
{ },
|
||
|
|
};
|
||
|
|
|
||
|
|
U_BOOT_DRIVER(gpio_key_bus) = {
|
||
|
|
.name = "gpio_key_bus",
|
||
|
|
.id = UCLASS_SIMPLE_BUS,
|
||
|
|
.of_match = gpio_key_bus_match,
|
||
|
|
.bind = gpio_key_bus_bind,
|
||
|
|
};
|