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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>
122 lines
2.4 KiB
C
122 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2014 NVIDIA Corporation
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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 <linux/printk.h>
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#include <power/as3722.h>
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#include <power/pmic.h>
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#define NUM_GPIOS 8
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int as3722_gpio_configure(struct udevice *pmic, unsigned int gpio,
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unsigned long flags)
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{
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u8 value = 0;
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int err;
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if (flags & AS3722_GPIO_OUTPUT_VDDH)
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value |= AS3722_GPIO_CONTROL_MODE_OUTPUT_VDDH;
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if (flags & AS3722_GPIO_INVERT)
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value |= AS3722_GPIO_CONTROL_INVERT;
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err = pmic_reg_write(pmic, AS3722_GPIO_CONTROL(gpio), value);
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if (err) {
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pr_err("failed to configure GPIO#%u: %d\n", gpio, err);
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return err;
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}
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return 0;
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}
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static int as3722_gpio_set_value(struct udevice *dev, unsigned int gpio,
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int level)
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{
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struct udevice *pmic = dev_get_parent(dev);
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const char *l;
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u8 value;
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int err;
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if (gpio >= NUM_GPIOS)
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return -EINVAL;
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err = pmic_reg_read(pmic, AS3722_GPIO_SIGNAL_OUT);
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if (err < 0) {
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pr_err("failed to read GPIO signal out register: %d\n", err);
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return err;
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}
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value = err;
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if (level == 0) {
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value &= ~(1 << gpio);
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l = "low";
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} else {
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value |= 1 << gpio;
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l = "high";
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}
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err = pmic_reg_write(pmic, AS3722_GPIO_SIGNAL_OUT, value);
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if (err) {
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pr_err("failed to set GPIO#%u %s: %d\n", gpio, l, err);
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return err;
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}
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return 0;
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}
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int as3722_gpio_direction_output(struct udevice *dev, unsigned int gpio,
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int value)
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{
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struct udevice *pmic = dev_get_parent(dev);
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int err;
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if (gpio > 7)
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return -EINVAL;
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if (value == 0)
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value = AS3722_GPIO_CONTROL_MODE_OUTPUT_VDDL;
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else
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value = AS3722_GPIO_CONTROL_MODE_OUTPUT_VDDH;
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err = pmic_reg_write(pmic, AS3722_GPIO_CONTROL(gpio), value);
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if (err) {
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pr_err("failed to configure GPIO#%u as output: %d\n", gpio,
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err);
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return err;
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}
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err = as3722_gpio_set_value(pmic, gpio, value);
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if (err < 0) {
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pr_err("failed to set GPIO#%u high: %d\n", gpio, err);
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return err;
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}
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return 0;
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}
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static int as3722_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 = NUM_GPIOS;
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uc_priv->bank_name = "as3722_";
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return 0;
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}
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static const struct dm_gpio_ops gpio_as3722_ops = {
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.direction_output = as3722_gpio_direction_output,
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.set_value = as3722_gpio_set_value,
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};
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U_BOOT_DRIVER(gpio_as3722) = {
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.name = "gpio_as3722",
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.id = UCLASS_GPIO,
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.ops = &gpio_as3722_ops,
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.probe = as3722_gpio_probe,
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};
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