blob: ab880823a378cfc42ff3f094ab7bcb7534970ede [file] [log] [blame]
Simon Glass1aa7e232012-04-02 13:18:44 +00001/*
2 * (C) Copyright 2010,2011
3 * NVIDIA Corporation <www.nvidia.com>
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24#ifndef __H_
25#define _TPS6586X_H_
26
27enum {
28 /* SM0-2 PWM/PFM Mode Selection */
29 TPS6586X_PWM_SM0 = 1 << 0,
30 TPS6586X_PWM_SM1 = 1 << 1,
31 TPS6586X_PWM_SM2 = 1 << 2,
32};
33
34/**
35 * Enable PWM mode for selected SM0-2
36 *
37 * @param mask Mask of synchronous converter to enable (TPS6586X_PWM_...)
38 * @return 0 if ok, -1 on error
39 */
40int tps6586x_set_pwm_mode(int mask);
41
42/**
43 * Adjust SM0 and SM1 voltages to the given targets in incremental steps.
44 *
45 * @param sm0_target Target voltage for SM0 in 25mW units, 0=725mV, 31=1.5V
46 * @param sm1_target Target voltage for SM1 in 25mW units, 0=725mV, 31=1.5V
47 * @param step Amount to change voltage in each step, in 25mW units
48 * @param rate Slew ratein mV/us: 0=instantly, 1=0.11, 2=0.22,
49 * 3=0.44, 4=0.88, 5=1.76, 6=3.52, 7=7.04
50 * @param min_sm0_over_sm1 Minimum amount by which sm0 must exceed sm1.
51 * If this condition is not met, no adjustment will be
52 * done and an error will be reported. Use -1 to skip
53 * this check.
54 * @return 0 if ok, -1 on error
55 */
56int tps6586x_adjust_sm0_sm1(int sm0_target, int sm1_target, int step, int rate,
57 int min_sm0_over_sm1);
58
59/**
60 * Set up the TPS6586X I2C bus number. This will be used for all operations
61 * on the device. This function must be called before using other functions.
62 *
63 * @param bus I2C bus number containing the TPS6586X chip
64 * @return 0 (always succeeds)
65 */
66int tps6586x_init(int bus);
67
68#endif /* _TPS6586X_H_ */