include/tps6586x.h

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