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MAX8907 PMIC has embedded poweroff function used by some device to initiane device power off. Implement it as optional sysreset driver guarded by kconfig option and system-power-controller device tree property. Tested-by: Ion Agorria <ion@agorria.com> Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
38 lines
791 B
C
38 lines
791 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright(C) 2024 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/max8907.h>
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static int max8907_sysreset_request(struct udevice *dev, enum sysreset_t type)
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{
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switch (type) {
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case SYSRESET_POWER:
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case SYSRESET_POWER_OFF:
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/* MAX8907: PWR_OFF > RESET_CNFG */
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pmic_clrsetbits(dev->parent, MAX8907_REG_RESET_CNFG,
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MASK_POWER_OFF, MASK_POWER_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 max8907_sysreset = {
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.request = max8907_sysreset_request,
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};
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U_BOOT_DRIVER(sysreset_max8907) = {
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.id = UCLASS_SYSRESET,
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.name = MAX8907_RST_DRIVER,
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.ops = &max8907_sysreset,
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};
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