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MAX77663 PMIC 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/max77663.h>
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static int max77663_sysreset_request(struct udevice *dev,
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enum sysreset_t type)
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{
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int val;
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val = pmic_reg_read(dev->parent, MAX77663_REG_ONOFF_CFG1);
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if (val < 0)
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return val;
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/* clear both bits */
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val &= ~ONOFF_SFT_RST;
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val &= ~ONOFF_PWR_OFF;
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switch (type) {
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case SYSRESET_POWER:
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/* MAX77663: SFT_RST > ONOFF_CFG1 */
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pmic_reg_write(dev->parent, MAX77663_REG_ONOFF_CFG1,
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val | ONOFF_SFT_RST);
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break;
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case SYSRESET_POWER_OFF:
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/* MAX77663: PWR_OFF > ONOFF_CFG1 */
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pmic_reg_write(dev->parent, MAX77663_REG_ONOFF_CFG1,
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val | ONOFF_PWR_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 max77663_sysreset = {
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.request = max77663_sysreset_request,
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};
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U_BOOT_DRIVER(sysreset_max77663) = {
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.id = UCLASS_SYSRESET,
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.name = MAX77663_RST_DRIVER,
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.ops = &max77663_sysreset,
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};
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