pmic_tps62362.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2014 Texas Instruments Incorporated - http://www.ti.com
* Author: Felipe Balbi <balbi@ti.com>
*/
#include <common.h>
#include <i2c.h>
#include <linux/errno.h>
#include <power/pmic.h>
#include <power/tps62362.h>
#ifdef CONFIG_DM_I2C
struct udevice *tps62362_dev __attribute__((section(".data"))) = NULL;
#endif
/**
* tps62362_voltage_update() - Function to change a voltage level, as this
* is a multi-step process.
* @reg: Register address to write to
* @volt_sel: Voltage register value to write
* @return: 0 on success, 1 on failure
*/
int tps62362_voltage_update(unsigned char reg, unsigned char volt_sel)
{
if (reg > TPS62362_NUM_REGS)
return 1;
#ifndef CONFIG_DM_I2C
return i2c_write(TPS62362_I2C_ADDR, reg, 1, &volt_sel, 1);
#else
if (!tps62362_dev)
return -ENODEV;
return dm_i2c_reg_write(tps62362_dev, reg, volt_sel);
#endif
}
#ifndef CONFIG_DM_I2C
int power_tps62362_init(unsigned char bus)
{
static const char name[] = "TPS62362";
struct pmic *p = pmic_alloc();
if (!p) {
printf("%s: POWER allocation error!\n", __func__);
return -ENOMEM;
}
p->name = name;
p->interface = PMIC_I2C;
p->number_of_regs = TPS62362_NUM_REGS;
p->hw.i2c.addr = TPS62362_I2C_ADDR;
p->hw.i2c.tx_num = 1;
p->bus = bus;
return 0;
}
#else
int power_tps62362_init(unsigned char bus)
{
struct udevice *dev = NULL;
int rc;
rc = i2c_get_chip_for_busnum(bus, TPS62362_I2C_ADDR, 1, &dev);
if (rc)
return rc;
tps62362_dev = dev;
return 0;
}
#endif