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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
92 lines
2.0 KiB
C
92 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015 Linaro
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* Peter Griffin <peter.griffin@linaro.org>
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*/
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#include <common.h>
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#include <dm.h>
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#include <asm/gpio.h>
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#include <asm/io.h>
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#include <errno.h>
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#include <linux/bitops.h>
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static int hi6220_gpio_direction_input(struct udevice *dev, unsigned int gpio)
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{
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struct gpio_bank *bank = dev_get_priv(dev);
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u8 data;
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data = readb(bank->base + HI6220_GPIO_DIR);
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data &= ~(1 << gpio);
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writeb(data, bank->base + HI6220_GPIO_DIR);
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return 0;
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}
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static int hi6220_gpio_set_value(struct udevice *dev, unsigned gpio,
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int value)
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{
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struct gpio_bank *bank = dev_get_priv(dev);
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writeb(!!value << gpio, bank->base + (BIT(gpio + 2)));
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return 0;
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}
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static int hi6220_gpio_direction_output(struct udevice *dev, unsigned gpio,
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int value)
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{
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struct gpio_bank *bank = dev_get_priv(dev);
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u8 data;
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data = readb(bank->base + HI6220_GPIO_DIR);
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data |= 1 << gpio;
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writeb(data, bank->base + HI6220_GPIO_DIR);
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hi6220_gpio_set_value(dev, gpio, value);
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return 0;
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}
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static int hi6220_gpio_get_value(struct udevice *dev, unsigned gpio)
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{
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struct gpio_bank *bank = dev_get_priv(dev);
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return !!readb(bank->base + (BIT(gpio + 2)));
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}
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static const struct dm_gpio_ops gpio_hi6220_ops = {
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.direction_input = hi6220_gpio_direction_input,
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.direction_output = hi6220_gpio_direction_output,
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.get_value = hi6220_gpio_get_value,
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.set_value = hi6220_gpio_set_value,
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};
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static int hi6220_gpio_probe(struct udevice *dev)
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{
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struct gpio_bank *bank = dev_get_priv(dev);
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struct hikey_gpio_plat *plat = dev_get_plat(dev);
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struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
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char name[18], *str;
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sprintf(name, "GPIO%d_", plat->bank_index);
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str = strdup(name);
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if (!str)
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return -ENOMEM;
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uc_priv->bank_name = str;
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uc_priv->gpio_count = HI6220_GPIO_PER_BANK;
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bank->base = (u8 *)plat->base;
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return 0;
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}
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U_BOOT_DRIVER(gpio_hi6220) = {
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.name = "gpio_hi6220",
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.id = UCLASS_GPIO,
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.ops = &gpio_hi6220_ops,
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.probe = hi6220_gpio_probe,
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.priv_auto = sizeof(struct gpio_bank),
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};
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