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1 | /* |
2 | * (C) Copyright 2014 Texas Instruments Incorporated - http://www.ti.com | |
3 | * Author: Felipe Balbi <balbi@ti.com> | |
4 | * | |
5 | * SPDX-License-Identifier: GPL-2.0+ | |
6 | */ | |
7 | ||
8 | #include <common.h> | |
9 | #include <i2c.h> | |
1221ce45 | 10 | #include <linux/errno.h> |
78fb6e31 FB |
11 | #include <power/pmic.h> |
12 | #include <power/tps62362.h> | |
13 | ||
14 | /** | |
15 | * tps62362_voltage_update() - Function to change a voltage level, as this | |
16 | * is a multi-step process. | |
17 | * @reg: Register address to write to | |
18 | * @volt_sel: Voltage register value to write | |
19 | * @return: 0 on success, 1 on failure | |
20 | */ | |
21 | int tps62362_voltage_update(unsigned char reg, unsigned char volt_sel) | |
22 | { | |
23 | if (reg > TPS62362_NUM_REGS) | |
24 | return 1; | |
25 | ||
26 | return i2c_write(TPS62362_I2C_ADDR, reg, 1, &volt_sel, 1); | |
27 | } | |
28 | ||
29 | int power_tps62362_init(unsigned char bus) | |
30 | { | |
31 | static const char name[] = "TPS62362"; | |
32 | struct pmic *p = pmic_alloc(); | |
33 | ||
34 | if (!p) { | |
35 | printf("%s: POWER allocation error!\n", __func__); | |
36 | return -ENOMEM; | |
37 | } | |
38 | ||
39 | p->name = name; | |
40 | p->interface = PMIC_I2C; | |
41 | p->number_of_regs = TPS62362_NUM_REGS; | |
42 | p->hw.i2c.addr = TPS62362_I2C_ADDR; | |
43 | p->hw.i2c.tx_num = 1; | |
44 | p->bus = bus; | |
45 | ||
46 | return 0; | |
47 | } |