git.sur5r.net Git - u-boot/blob - drivers/power/pmic/pmic_tps62362.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2014 Texas Instruments Incorporated -  http://www.ti.com
   4  * Author: Felipe Balbi <balbi@ti.com>
   5  */
   6
   7 #include <common.h>
   8 #include <i2c.h>
   9 #include <linux/errno.h>
  10 #include <power/pmic.h>
  11 #include <power/tps62362.h>
  12
  13 /**
  14  * tps62362_voltage_update() - Function to change a voltage level, as this
  15  *                             is a multi-step process.
  16  * @reg:        Register address to write to
  17  * @volt_sel:   Voltage register value to write
  18  * @return:     0 on success, 1 on failure
  19  */
  20 int tps62362_voltage_update(unsigned char reg, unsigned char volt_sel)
  21 {
  22         if (reg > TPS62362_NUM_REGS)
  23                 return 1;
  24
  25         return i2c_write(TPS62362_I2C_ADDR, reg, 1, &volt_sel, 1);
  26 }
  27
  28 int power_tps62362_init(unsigned char bus)
  29 {
  30         static const char name[] = "TPS62362";
  31         struct pmic *p = pmic_alloc();
  32
  33         if (!p) {
  34                 printf("%s: POWER allocation error!\n", __func__);
  35                 return -ENOMEM;
  36         }
  37
  38         p->name = name;
  39         p->interface = PMIC_I2C;
  40         p->number_of_regs = TPS62362_NUM_REGS;
  41         p->hw.i2c.addr = TPS62362_I2C_ADDR;
  42         p->hw.i2c.tx_num = 1;
  43         p->bus = bus;
  44
  45         return 0;
  46 }