/*
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* (C) Copyright 2017 Rockchip Electronics Co., Ltd
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <key.h>
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static int rk_key_ofdata_to_platdata(struct udevice *dev)
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{
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struct dm_key_uclass_platdata *uc_key;
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u32 chn[2];
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uc_key = dev_get_uclass_platdata(dev);
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if (!uc_key)
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return -ENXIO;
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uc_key->name = dev_read_string(dev, "label");
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uc_key->code = dev_read_u32_default(dev, "linux,code", -ENODATA);
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if (dev_read_u32_array(dev_get_parent(dev), "io-channels", chn, 2)) {
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printf("%s: read 'io-channels' failed\n", uc_key->name);
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return -EINVAL;
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}
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if (dev_read_bool(dev, "rockchip,adc_value")) {
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uc_key->type = ADC_KEY;
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uc_key->in_volt = 0;
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uc_key->channel = chn[1];
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uc_key->center = dev_read_u32_default(dev, "rockchip,adc_value", 0);
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uc_key->min = uc_key->center - 30;
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if (uc_key->min < 0)
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uc_key->min = 0;
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uc_key->max = uc_key->center + 30;
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} else {
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uc_key->type = GPIO_KEY;
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if (dev_read_u32_array(dev, "gpios",
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uc_key->gpios,
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ARRAY_SIZE(uc_key->gpios))) {
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printf("%s: read 'gpios' failed\n", uc_key->name);
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return -EINVAL;
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}
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}
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return 0;
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}
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U_BOOT_DRIVER(rk_key) = {
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.name = "rk_key",
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.id = UCLASS_KEY,
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.ofdata_to_platdata = rk_key_ofdata_to_platdata,
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};
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/* Key Bus */
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static int rk_key_bus_bind(struct udevice *dev)
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{
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return key_bind_children(dev, "rk_key");
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}
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static const struct udevice_id rk_key_bus_match[] = {
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{ .compatible = "rockchip,key" },
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{ },
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};
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U_BOOT_DRIVER(rk_key_bus) = {
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.name = "rk_key_bus",
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.id = UCLASS_SIMPLE_BUS,
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.of_match = rk_key_bus_match,
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.bind = rk_key_bus_bind,
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};
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