mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-07 11:46:17 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
120 lines
2.3 KiB
C
120 lines
2.3 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 <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", 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", 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", 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", gpio, 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", 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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