1c8be8500SJoseph Chen /*
2c8be8500SJoseph Chen * (C) Copyright 2017 Rockchip Electronics Co., Ltd
3c8be8500SJoseph Chen *
4c8be8500SJoseph Chen * SPDX-License-Identifier: GPL-2.0+
5c8be8500SJoseph Chen */
6c8be8500SJoseph Chen
7c8be8500SJoseph Chen #include <common.h>
8c8be8500SJoseph Chen #include <dm.h>
9c8be8500SJoseph Chen #include <key.h>
10c8be8500SJoseph Chen
gpio_key_ofdata_to_platdata(struct udevice * dev)11c8be8500SJoseph Chen static int gpio_key_ofdata_to_platdata(struct udevice *dev)
12c8be8500SJoseph Chen {
13*5a54baa7SJoseph Chen struct dm_key_uclass_platdata *uc_key;
14c8be8500SJoseph Chen
15*5a54baa7SJoseph Chen uc_key = dev_get_uclass_platdata(dev);
16*5a54baa7SJoseph Chen if (!uc_key)
17*5a54baa7SJoseph Chen return -ENXIO;
1864048c53SJoseph Chen
19*5a54baa7SJoseph Chen uc_key->type = GPIO_KEY;
20*5a54baa7SJoseph Chen uc_key->name = dev_read_string(dev, "label");
21*5a54baa7SJoseph Chen uc_key->code = dev_read_u32_default(dev, "linux,code", -ENODATA);
22*5a54baa7SJoseph Chen if (uc_key->code < 0) {
23*5a54baa7SJoseph Chen printf("%s: read 'linux,code' failed\n", uc_key->name);
24*5a54baa7SJoseph Chen return -EINVAL;
25c8be8500SJoseph Chen }
2664048c53SJoseph Chen
27*5a54baa7SJoseph Chen if (dev_read_u32_array(dev, "gpios",
28*5a54baa7SJoseph Chen uc_key->gpios, ARRAY_SIZE(uc_key->gpios))) {
29*5a54baa7SJoseph Chen printf("%s: read 'gpios' failed\n", uc_key->name);
30*5a54baa7SJoseph Chen return -EINVAL;
31c8be8500SJoseph Chen }
32c8be8500SJoseph Chen
33c8be8500SJoseph Chen return 0;
34c8be8500SJoseph Chen }
35c8be8500SJoseph Chen
36*5a54baa7SJoseph Chen U_BOOT_DRIVER(gpio_key) = {
37*5a54baa7SJoseph Chen .name = "gpio_key",
38*5a54baa7SJoseph Chen .id = UCLASS_KEY,
39*5a54baa7SJoseph Chen .ofdata_to_platdata = gpio_key_ofdata_to_platdata,
40c8be8500SJoseph Chen };
41c8be8500SJoseph Chen
42*5a54baa7SJoseph Chen /* Key Bus */
gpio_key_bus_bind(struct udevice * dev)43*5a54baa7SJoseph Chen static int gpio_key_bus_bind(struct udevice *dev)
44*5a54baa7SJoseph Chen {
45*5a54baa7SJoseph Chen return key_bind_children(dev, "gpio_key");
46*5a54baa7SJoseph Chen }
47*5a54baa7SJoseph Chen
48*5a54baa7SJoseph Chen static const struct udevice_id gpio_key_bus_match[] = {
49c8be8500SJoseph Chen { .compatible = "gpio-keys" },
50c8be8500SJoseph Chen { },
51c8be8500SJoseph Chen };
52c8be8500SJoseph Chen
53*5a54baa7SJoseph Chen U_BOOT_DRIVER(gpio_key_bus) = {
54*5a54baa7SJoseph Chen .name = "gpio_key_bus",
55*5a54baa7SJoseph Chen .id = UCLASS_SIMPLE_BUS,
56*5a54baa7SJoseph Chen .of_match = gpio_key_bus_match,
57*5a54baa7SJoseph Chen .bind = gpio_key_bus_bind,
58c8be8500SJoseph Chen };
59