mirror of
https://github.com/brain-hackers/u-boot-brain
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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>
149 lines
3.0 KiB
C
149 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*
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* Placeholder regulator driver for as3722.
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <power/as3722.h>
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#include <power/pmic.h>
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#include <power/regulator.h>
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static int stepdown_get_value(struct udevice *dev)
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{
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return -ENOSYS;
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}
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static int stepdown_set_value(struct udevice *dev, int uvolt)
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{
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return -ENOSYS;
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}
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static int stepdown_set_enable(struct udevice *dev, bool enable)
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{
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struct udevice *pmic = dev_get_parent(dev);
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int sd = dev->driver_data;
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int ret;
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ret = pmic_clrsetbits(pmic, AS3722_SD_CONTROL, 0, 1 << sd);
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if (ret < 0) {
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debug("%s: failed to write SD control register: %d", __func__,
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ret);
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return ret;
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}
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return 0;
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}
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static int stepdown_get_enable(struct udevice *dev)
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{
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struct udevice *pmic = dev_get_parent(dev);
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int sd = dev->driver_data;
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int ret;
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ret = pmic_reg_read(pmic, AS3722_SD_CONTROL);
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if (ret < 0) {
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debug("%s: failed to read SD control register: %d", __func__,
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ret);
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return ret;
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}
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return ret & (1 << sd) ? true : false;
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}
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static int ldo_get_value(struct udevice *dev)
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{
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return -ENOSYS;
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}
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static int ldo_set_value(struct udevice *dev, int uvolt)
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{
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return -ENOSYS;
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}
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static int ldo_set_enable(struct udevice *dev, bool enable)
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{
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struct udevice *pmic = dev_get_parent(dev);
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int ldo = dev->driver_data;
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int ret;
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ret = pmic_clrsetbits(pmic, AS3722_LDO_CONTROL, 0, 1 << ldo);
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if (ret < 0) {
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debug("%s: failed to write LDO control register: %d", __func__,
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ret);
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return ret;
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}
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return 0;
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}
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static int ldo_get_enable(struct udevice *dev)
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{
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struct udevice *pmic = dev_get_parent(dev);
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int ldo = dev->driver_data;
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int ret;
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ret = pmic_reg_read(pmic, AS3722_LDO_CONTROL);
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if (ret < 0) {
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debug("%s: failed to read SD control register: %d", __func__,
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ret);
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return ret;
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}
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return ret & (1 << ldo) ? true : false;
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}
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static int as3722_stepdown_probe(struct udevice *dev)
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{
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struct dm_regulator_uclass_platdata *uc_pdata;
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uc_pdata = dev_get_uclass_platdata(dev);
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uc_pdata->type = REGULATOR_TYPE_BUCK;
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return 0;
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}
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static int as3722_ldo_probe(struct udevice *dev)
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{
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struct dm_regulator_uclass_platdata *uc_pdata;
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uc_pdata = dev_get_uclass_platdata(dev);
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uc_pdata->type = REGULATOR_TYPE_LDO;
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return 0;
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}
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static const struct dm_regulator_ops as3722_stepdown_ops = {
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.get_value = stepdown_get_value,
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.set_value = stepdown_set_value,
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.get_enable = stepdown_get_enable,
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.set_enable = stepdown_set_enable,
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};
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static const struct dm_regulator_ops as3722_ldo_ops = {
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.get_value = ldo_get_value,
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.set_value = ldo_set_value,
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.get_enable = ldo_get_enable,
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.set_enable = ldo_set_enable,
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};
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U_BOOT_DRIVER(as3722_stepdown) = {
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.name = "as3722_stepdown",
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.id = UCLASS_REGULATOR,
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.ops = &as3722_stepdown_ops,
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.probe = as3722_stepdown_probe,
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};
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U_BOOT_DRIVER(as3722_ldo) = {
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.name = "as3722_ldo",
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.id = UCLASS_REGULATOR,
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.ops = &as3722_ldo_ops,
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.probe = as3722_ldo_probe,
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};
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