2 * Copyright (C) 2016 Stefan Roese <sr@denx.de>
4 * SPDX-License-Identifier: GPL-2.0+
13 DECLARE_GLOBAL_DATA_PTR;
15 #define MVEBU_GPIOS_PER_BANK 32
17 struct mvebu_gpio_regs {
25 struct mvebu_gpio_priv {
26 struct mvebu_gpio_regs *regs;
30 static int mvebu_gpio_direction_input(struct udevice *dev, unsigned int gpio)
32 struct mvebu_gpio_priv *priv = dev_get_priv(dev);
33 struct mvebu_gpio_regs *regs = priv->regs;
35 setbits_le32(®s->io_conf, BIT(gpio));
40 static int mvebu_gpio_direction_output(struct udevice *dev, unsigned gpio,
43 struct mvebu_gpio_priv *priv = dev_get_priv(dev);
44 struct mvebu_gpio_regs *regs = priv->regs;
46 clrbits_le32(®s->io_conf, BIT(gpio));
51 static int mvebu_gpio_get_function(struct udevice *dev, unsigned gpio)
53 struct mvebu_gpio_priv *priv = dev_get_priv(dev);
54 struct mvebu_gpio_regs *regs = priv->regs;
57 val = readl(®s->io_conf) & BIT(gpio);
64 static int mvebu_gpio_set_value(struct udevice *dev, unsigned gpio,
67 struct mvebu_gpio_priv *priv = dev_get_priv(dev);
68 struct mvebu_gpio_regs *regs = priv->regs;
71 setbits_le32(®s->data_out, BIT(gpio));
73 clrbits_le32(®s->data_out, BIT(gpio));
78 static int mvebu_gpio_get_value(struct udevice *dev, unsigned gpio)
80 struct mvebu_gpio_priv *priv = dev_get_priv(dev);
81 struct mvebu_gpio_regs *regs = priv->regs;
83 return !!(readl(®s->data_in) & BIT(gpio));
86 static int mvebu_gpio_probe(struct udevice *dev)
88 struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
89 struct mvebu_gpio_priv *priv = dev_get_priv(dev);
91 priv->regs = (struct mvebu_gpio_regs *)dev_get_addr(dev);
92 uc_priv->gpio_count = MVEBU_GPIOS_PER_BANK;
93 priv->name[0] = 'A' + dev->req_seq;
94 uc_priv->bank_name = priv->name;
99 static const struct dm_gpio_ops mvebu_gpio_ops = {
100 .direction_input = mvebu_gpio_direction_input,
101 .direction_output = mvebu_gpio_direction_output,
102 .get_function = mvebu_gpio_get_function,
103 .get_value = mvebu_gpio_get_value,
104 .set_value = mvebu_gpio_set_value,
107 static const struct udevice_id mvebu_gpio_ids[] = {
108 { .compatible = "marvell,orion-gpio" },
112 U_BOOT_DRIVER(gpio_mvebu) = {
113 .name = "gpio_mvebu",
115 .of_match = mvebu_gpio_ids,
116 .ops = &mvebu_gpio_ops,
117 .probe = mvebu_gpio_probe,
118 .priv_auto_alloc_size = sizeof(struct mvebu_gpio_priv),