/* * (C) Copyright 2010,2011 * NVIDIA Corporation <www.nvidia.com> * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #ifndef __H_ #define _TPS6586X_H_ enum { /* SM0-2 PWM/PFM Mode Selection */ TPS6586X_PWM_SM0 = 1 << 0, TPS6586X_PWM_SM1 = 1 << 1, TPS6586X_PWM_SM2 = 1 << 2, }; /** * Enable PWM mode for selected SM0-2 * * @param mask Mask of synchronous converter to enable (TPS6586X_PWM_...) * @return 0 if ok, -1 on error */ int tps6586x_set_pwm_mode(int mask); /** * Adjust SM0 and SM1 voltages to the given targets in incremental steps. * * @param sm0_target Target voltage for SM0 in 25mW units, 0=725mV, 31=1.5V * @param sm1_target Target voltage for SM1 in 25mW units, 0=725mV, 31=1.5V * @param step Amount to change voltage in each step, in 25mW units * @param rate Slew ratein mV/us: 0=instantly, 1=0.11, 2=0.22, * 3=0.44, 4=0.88, 5=1.76, 6=3.52, 7=7.04 * @param min_sm0_over_sm1 Minimum amount by which sm0 must exceed sm1. * If this condition is not met, no adjustment will be * done and an error will be reported. Use -1 to skip * this check. * @return 0 if ok, -1 on error */ int tps6586x_adjust_sm0_sm1(int sm0_target, int sm1_target, int step, int rate, int min_sm0_over_sm1); /** * Set up the TPS6586X I2C bus number. This will be used for all operations * on the device. This function must be called before using other functions. * * @param bus I2C bus number containing the TPS6586X chip * @return 0 (always succeeds) */ int tps6586x_init(int bus); #endif /* _TPS6586X_H_ */