2 * Copyright (C) 2015 Linaro
3 * Peter Griffin <peter.griffin@linaro.org>
5 * SPDX-License-Identifier: GPL-2.0+
14 static int hi6220_gpio_direction_input(struct udevice *dev, unsigned int gpio)
16 struct gpio_bank *bank = dev_get_priv(dev);
19 data = readb(bank->base + HI6220_GPIO_DIR);
21 writeb(data, bank->base + HI6220_GPIO_DIR);
26 static int hi6220_gpio_set_value(struct udevice *dev, unsigned gpio,
29 struct gpio_bank *bank = dev_get_priv(dev);
31 writeb(!!value << gpio, bank->base + (BIT(gpio + 2)));
35 static int hi6220_gpio_direction_output(struct udevice *dev, unsigned gpio,
38 struct gpio_bank *bank = dev_get_priv(dev);
41 data = readb(bank->base + HI6220_GPIO_DIR);
43 writeb(data, bank->base + HI6220_GPIO_DIR);
45 hi6220_gpio_set_value(dev, gpio, value);
50 static int hi6220_gpio_get_value(struct udevice *dev, unsigned gpio)
52 struct gpio_bank *bank = dev_get_priv(dev);
54 return !!readb(bank->base + (BIT(gpio + 2)));
59 static const struct dm_gpio_ops gpio_hi6220_ops = {
60 .direction_input = hi6220_gpio_direction_input,
61 .direction_output = hi6220_gpio_direction_output,
62 .get_value = hi6220_gpio_get_value,
63 .set_value = hi6220_gpio_set_value,
66 static int hi6220_gpio_probe(struct udevice *dev)
68 struct gpio_bank *bank = dev_get_priv(dev);
69 struct hikey_gpio_platdata *plat = dev_get_platdata(dev);
70 struct gpio_dev_priv *uc_priv = dev->uclass_priv;
73 sprintf(name, "GPIO%d_", plat->bank_index);
79 uc_priv->bank_name = str;
80 uc_priv->gpio_count = HI6220_GPIO_PER_BANK;
82 bank->base = (u8 *)plat->base;
87 U_BOOT_DRIVER(gpio_hi6220) = {
88 .name = "gpio_hi6220",
90 .ops = &gpio_hi6220_ops,
91 .probe = hi6220_gpio_probe,
92 .priv_auto_alloc_size = sizeof(struct gpio_bank),