71 lines
1.5 KiB
C
71 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2014 Texas Instruments Incorporated - http://www.ti.com
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* Author: Felipe Balbi <balbi@ti.com>
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*/
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#include <common.h>
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#include <i2c.h>
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#include <linux/errno.h>
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#include <power/pmic.h>
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#include <power/tps62362.h>
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#ifdef CONFIG_DM_I2C
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struct udevice *tps62362_dev __attribute__((section(".data"))) = NULL;
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#endif
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/**
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* tps62362_voltage_update() - Function to change a voltage level, as this
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* is a multi-step process.
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* @reg: Register address to write to
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* @volt_sel: Voltage register value to write
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* @return: 0 on success, 1 on failure
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*/
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int tps62362_voltage_update(unsigned char reg, unsigned char volt_sel)
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{
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if (reg > TPS62362_NUM_REGS)
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return 1;
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#ifndef CONFIG_DM_I2C
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return i2c_write(TPS62362_I2C_ADDR, reg, 1, &volt_sel, 1);
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#else
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if (!tps62362_dev)
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return -ENODEV;
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return dm_i2c_reg_write(tps62362_dev, reg, volt_sel);
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#endif
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}
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#ifndef CONFIG_DM_I2C
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int power_tps62362_init(unsigned char bus)
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{
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static const char name[] = "TPS62362";
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struct pmic *p = pmic_alloc();
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if (!p) {
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printf("%s: POWER allocation error!\n", __func__);
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return -ENOMEM;
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}
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p->name = name;
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p->interface = PMIC_I2C;
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p->number_of_regs = TPS62362_NUM_REGS;
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p->hw.i2c.addr = TPS62362_I2C_ADDR;
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p->hw.i2c.tx_num = 1;
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p->bus = bus;
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return 0;
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}
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#else
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int power_tps62362_init(unsigned char bus)
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{
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struct udevice *dev = NULL;
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int rc;
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rc = i2c_get_chip_for_busnum(bus, TPS62362_I2C_ADDR, 1, &dev);
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if (rc)
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return rc;
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tps62362_dev = dev;
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return 0;
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}
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#endif
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