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Simon Glass1aa7e232012-04-02 13:18:44 +00001/*
2 * (C) Copyright 2010,2011
3 * NVIDIA Corporation <www.nvidia.com>
4 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02005 * SPDX-License-Identifier: GPL-2.0+
Simon Glass1aa7e232012-04-02 13:18:44 +00006 */
7
8#ifndef __H_
9#define _TPS6586X_H_
10
11enum {
12 /* SM0-2 PWM/PFM Mode Selection */
13 TPS6586X_PWM_SM0 = 1 << 0,
14 TPS6586X_PWM_SM1 = 1 << 1,
15 TPS6586X_PWM_SM2 = 1 << 2,
16};
17
18/**
19 * Enable PWM mode for selected SM0-2
20 *
21 * @param mask Mask of synchronous converter to enable (TPS6586X_PWM_...)
22 * @return 0 if ok, -1 on error
23 */
24int tps6586x_set_pwm_mode(int mask);
25
26/**
27 * Adjust SM0 and SM1 voltages to the given targets in incremental steps.
28 *
29 * @param sm0_target Target voltage for SM0 in 25mW units, 0=725mV, 31=1.5V
30 * @param sm1_target Target voltage for SM1 in 25mW units, 0=725mV, 31=1.5V
31 * @param step Amount to change voltage in each step, in 25mW units
32 * @param rate Slew ratein mV/us: 0=instantly, 1=0.11, 2=0.22,
33 * 3=0.44, 4=0.88, 5=1.76, 6=3.52, 7=7.04
34 * @param min_sm0_over_sm1 Minimum amount by which sm0 must exceed sm1.
35 * If this condition is not met, no adjustment will be
36 * done and an error will be reported. Use -1 to skip
37 * this check.
38 * @return 0 if ok, -1 on error
39 */
40int tps6586x_adjust_sm0_sm1(int sm0_target, int sm1_target, int step, int rate,
41 int min_sm0_over_sm1);
42
43/**
44 * Set up the TPS6586X I2C bus number. This will be used for all operations
45 * on the device. This function must be called before using other functions.
46 *
47 * @param bus I2C bus number containing the TPS6586X chip
48 * @return 0 (always succeeds)
49 */
50int tps6586x_init(int bus);
51
52#endif /* _TPS6586X_H_ */