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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>
118 lines
2.5 KiB
C
118 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* slg7xl45106_i2c_gpo driver
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*
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* Copyright (C) 2021 Xilinx, Inc.
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*/
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#include <common.h>
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#include <errno.h>
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#include <asm/io.h>
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#include <asm/gpio.h>
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#include <dm.h>
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#include <i2c.h>
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#include <dt-bindings/gpio/gpio.h>
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#include <asm/arch/hardware.h>
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#define SLG7XL45106_REG 0xdb
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static int slg7xl45106_i2c_gpo_direction_input(struct udevice *dev,
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unsigned int offset)
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{
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return 0;
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}
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static int slg7xl45106_i2c_gpo_xlate(struct udevice *dev,
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struct gpio_desc *desc,
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struct ofnode_phandle_args *args)
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{
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desc->offset = (unsigned int)args->args[0];
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desc->flags = (args->args[1] & GPIO_ACTIVE_LOW ? GPIOD_ACTIVE_LOW : 0);
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return 0;
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}
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static int slg7xl45106_i2c_gpo_set_value(struct udevice *dev,
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unsigned int offset, int value)
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{
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int ret;
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u8 val;
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ret = dm_i2c_read(dev, SLG7XL45106_REG, &val, 1);
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if (ret)
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return ret;
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if (value)
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val |= BIT(offset);
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else
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val &= ~BIT(offset);
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return dm_i2c_write(dev, SLG7XL45106_REG, &val, 1);
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}
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static int slg7xl45106_i2c_gpo_direction_output(struct udevice *dev,
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unsigned int offset, int value)
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{
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return slg7xl45106_i2c_gpo_set_value(dev, offset, value);
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}
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static int slg7xl45106_i2c_gpo_get_value(struct udevice *dev,
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unsigned int offset)
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{
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int ret;
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u8 val;
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ret = dm_i2c_read(dev, SLG7XL45106_REG, &val, 1);
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if (ret)
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return ret;
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return !!(val & BIT(offset));
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}
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static int slg7xl45106_i2c_gpo_get_function(struct udevice *dev,
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unsigned int offset)
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{
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return GPIOF_OUTPUT;
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}
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static const struct dm_gpio_ops slg7xl45106_i2c_gpo_ops = {
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.direction_input = slg7xl45106_i2c_gpo_direction_input,
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.direction_output = slg7xl45106_i2c_gpo_direction_output,
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.get_value = slg7xl45106_i2c_gpo_get_value,
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.set_value = slg7xl45106_i2c_gpo_set_value,
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.get_function = slg7xl45106_i2c_gpo_get_function,
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.xlate = slg7xl45106_i2c_gpo_xlate,
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};
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static int slg7xl45106_i2c_gpo_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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const void *label_ptr;
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label_ptr = dev_read_prop(dev, "label", NULL);
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if (label_ptr) {
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uc_priv->bank_name = strdup(label_ptr);
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if (!uc_priv->bank_name)
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return -ENOMEM;
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} else {
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uc_priv->bank_name = dev->name;
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}
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uc_priv->gpio_count = 8;
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return 0;
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}
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static const struct udevice_id slg7xl45106_i2c_gpo_ids[] = {
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{ .compatible = "dlg,slg7xl45106",},
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{ }
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};
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U_BOOT_DRIVER(slg7xl45106_i2c_gpo) = {
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.name = "slg7xl45106_i2c_gpo",
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.id = UCLASS_GPIO,
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.ops = &slg7xl45106_i2c_gpo_ops,
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.of_match = slg7xl45106_i2c_gpo_ids,
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.probe = slg7xl45106_i2c_gpo_probe,
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};
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