// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2022 Rockchip Electronics Co., Ltd
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*/
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#include <asm-generic/gpio.h>
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#include <common.h>
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#include <dm.h>
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#include <i2c.h>
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#include <max96752f.h>
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static int max96752f_gpio_direction_output(struct udevice *dev, unsigned offset,
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int value)
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{
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int ret;
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ret = dm_i2c_reg_clrset(dev->parent, GPIO_A_REG(offset),
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GPIO_OUT_DIS | GPIO_OUT,
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FIELD_PREP(GPIO_OUT_DIS, 0) |
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FIELD_PREP(GPIO_OUT, value));
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if (ret < 0)
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return ret;
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return 0;
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}
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static int max96752f_gpio_get_value(struct udevice *dev, unsigned offset)
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{
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int ret;
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ret = dm_i2c_reg_read(dev->parent, GPIO_A_REG(offset));
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if (ret < 0)
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return ret;
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return FIELD_GET(GPIO_OUT, ret);
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}
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static int max96752f_gpio_set_value(struct udevice *dev, unsigned offset,
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int value)
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{
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int ret;
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ret = dm_i2c_reg_clrset(dev->parent, GPIO_A_REG(offset), GPIO_OUT,
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FIELD_PREP(GPIO_OUT, value));
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if (ret < 0)
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return ret;
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return 0;
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}
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static int max96752f_gpio_get_function(struct udevice *dev, unsigned offset)
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{
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int ret;
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ret = dm_i2c_reg_read(dev->parent, GPIO_A_REG(offset));
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if (ret < 0)
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return ret;
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return FIELD_GET(GPIO_OUT_DIS, ret) ? GPIOF_INPUT : GPIOF_OUTPUT;
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}
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static const struct dm_gpio_ops max96752f_gpio_ops = {
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.direction_output = max96752f_gpio_direction_output,
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.get_value = max96752f_gpio_get_value,
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.set_value = max96752f_gpio_set_value,
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.get_function = max96752f_gpio_get_function,
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};
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static int max96752f_gpio_probe(struct udevice *dev)
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{
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struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
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uc_priv->gpio_count = 16;
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uc_priv->bank_name = of_node_full_name(dev_np(dev));
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return 0;
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}
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static const struct udevice_id max96752f_gpio_match[] = {
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{ .compatible = "maxim,max96752f-gpio" },
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{ }
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};
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U_BOOT_DRIVER(max96752f_gpio) = {
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.name = "max96752f_gpio",
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.id = UCLASS_GPIO,
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.of_match = max96752f_gpio_match,
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.probe = max96752f_gpio_probe,
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.ops = &max96752f_gpio_ops,
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};
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