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 #ifdef CONFIG_DM_I2C
14 struct udevice *tps62362_dev __attribute__((section(".data"))) = NULL;
15 #endif
16 
17 /**
18  * tps62362_voltage_update() - Function to change a voltage level, as this
19  *			       is a multi-step process.
20  * @reg:	Register address to write to
21  * @volt_sel:	Voltage register value to write
22  * @return:	0 on success, 1 on failure
23  */
24 int tps62362_voltage_update(unsigned char reg, unsigned char volt_sel)
25 {
26 	if (reg > TPS62362_NUM_REGS)
27 		return 1;
28 
29 #ifndef CONFIG_DM_I2C
30 	return i2c_write(TPS62362_I2C_ADDR, reg, 1, &volt_sel, 1);
31 #else
32 	if (!tps62362_dev)
33 		return -ENODEV;
34 	return dm_i2c_reg_write(tps62362_dev, reg, volt_sel);
35 #endif
36 }
37 
38 #ifndef CONFIG_DM_I2C
39 int power_tps62362_init(unsigned char bus)
40 {
41 	static const char name[] = "TPS62362";
42 	struct pmic *p = pmic_alloc();
43 
44 	if (!p) {
45 		printf("%s: POWER allocation error!\n", __func__);
46 		return -ENOMEM;
47 	}
48 
49 	p->name = name;
50 	p->interface = PMIC_I2C;
51 	p->number_of_regs = TPS62362_NUM_REGS;
52 	p->hw.i2c.addr = TPS62362_I2C_ADDR;
53 	p->hw.i2c.tx_num = 1;
54 	p->bus = bus;
55 
56 	return 0;
57 }
58 #else
59 int power_tps62362_init(unsigned char bus)
60 {
61 	struct udevice *dev = NULL;
62 	int rc;
63 
64 	rc = i2c_get_chip_for_busnum(bus, TPS62362_I2C_ADDR, 1, &dev);
65 	if (rc)
66 		return rc;
67 	tps62362_dev = dev;
68 	return 0;
69 }
70 #endif
71