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PALMAS PMIC family has embedded poweroff function used by some device to initiane device power off. Implement it as sysreset driver. Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright(C) 2023 Svyatoslav Ryhel <clamor95@gmail.com>
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*/
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#include <dm.h>
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#include <i2c.h>
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#include <errno.h>
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#include <sysreset.h>
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#include <power/pmic.h>
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#include <power/palmas.h>
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static int palmas_sysreset_request(struct udevice *dev,
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enum sysreset_t type)
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{
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struct palmas_priv *priv = dev_get_priv(dev->parent);
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int ret;
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/*
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* Mask INT3 on second page which detects vbus
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* or device will immediately turn on.
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*/
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ret = dm_i2c_reg_clrset(priv->chip2, PALMAS_INT3_MASK,
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MASK_VBUS, MASK_VBUS);
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if (ret < 0)
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return ret;
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switch (type) {
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case SYSRESET_POWER:
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/* PALMAS: SW_RST > DEV_CTRL */
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pmic_reg_write(dev->parent, PALMAS_DEV_CTRL, SW_RST);
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break;
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case SYSRESET_POWER_OFF:
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/* PALMAS: DEV_OFF > DEV_CTRL */
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pmic_reg_write(dev->parent, PALMAS_DEV_CTRL, DEV_OFF);
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break;
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default:
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return -EPROTONOSUPPORT;
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}
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return -EINPROGRESS;
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}
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static struct sysreset_ops palmas_sysreset = {
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.request = palmas_sysreset_request,
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};
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U_BOOT_DRIVER(sysreset_palmas) = {
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.id = UCLASS_SYSRESET,
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.name = PALMAS_RST_DRIVER,
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.ops = &palmas_sysreset,
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};
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