/*
   * (C) Copyright 2012-2013
   * Texas Instruments, <www.ti.com>
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  #include <config.h>
  #include <palmas.h>
  
  void palmas_init_settings(void)
  {
  #ifdef CONFIG_PALMAS_SMPS7_FPWM
  	int err;
  	/*
  	 * Set SMPS7 (1.8 V I/O supply on platforms with TWL6035/37) to
  	 * forced PWM mode. This reduces noise (but affects efficiency).
  	 */
  	u8 val = SMPS_MODE_SLP_FPWM | SMPS_MODE_ACT_FPWM;
  	err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS7_CTRL, val);
  	if (err)
  		printf("palmas: could not force PWM for SMPS7: err = %d
  ",
  		       err);
  #endif
  }
  
  int palmas_mmc1_poweron_ldo(void)
  {
  	u8 val = 0;
  
  #if defined(CONFIG_DRA7XX) || defined(CONFIG_AM57XX)
  	/*
  	 * Currently valid for the dra7xx_evm board:
  	 * Set TPS659038 LDO1 to 3.0 V
  	 */
  	val = LDO_VOLT_3V0;
  	if (palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_VOLTAGE, val)) {
  		printf("tps65903x: could not set LDO1 voltage.
  ");
  		return 1;
  	}
  	/* TURN ON LDO1 */
  	val = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
  	if (palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_CTRL, val)) {
  		printf("tps65903x: could not turn on LDO1.
  ");
  		return 1;
  	}
  	return 0;
  #else
  	/*
  	 * We assume that this is a OMAP543X + TWL603X board:
  	 * Set TWL6035/37 LDO9 to 3.0 V
  	 */
  	val = LDO_VOLT_3V0;
  	return twl603x_mmc1_set_ldo9(val);
  #endif
  }
  
  /*
   * On some OMAP5 + TWL603X hardware the SD card socket and LDO9_IN are
   * powered by an external 3.3 V regulator, while the output of LDO9
   * supplies VDDS_SDCARD for the OMAP5 interface only. This implies that
   * LDO9 could be set to 'bypass' mode when required (e.g. for 3.3 V cards).
   */
  int twl603x_mmc1_set_ldo9(u8 vsel)
  {
  	u8 cval = 0, vval = 0;	/* Off by default */
  	int err;
  
  	if (vsel) {
  		/* Turn on */
  		if (vsel > LDO_VOLT_3V3) {
  			/* Put LDO9 in bypass */
  			cval = LDO9_BYP_EN | RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
  			vval = LDO_VOLT_3V3;
  		} else {
  			cval = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
  			vval = vsel & 0x3f;
  		}
  	}
  	err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_VOLTAGE, vval);
  	if (err) {
  		printf("twl603x: could not set LDO9 %s: err = %d
  ",
  		       vsel > LDO_VOLT_3V3 ? "bypass" : "voltage", err);
  		return err;
  	}
  	err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_CTRL, cval);
  	if (err)
  		printf("twl603x: could not turn %s LDO9: err = %d
  ",
  		       cval ? "on" : "off", err);
  	return err;
  }
  
  #ifdef CONFIG_PALMAS_AUDPWR
  /*
   * Turn audio codec power and 32 kHz clock on/off. Use for
   * testing OMAP543X + TWL603X + TWL604X boards only.
   */
  int twl603x_audio_power(u8 on)
  {
  	u8 cval = 0, vval = 0, c32k = 0;
  	int err;
  
  	if (on) {
  		vval = SMPS_VOLT_2V1;
  		cval = SMPS_MODE_SLP_AUTO | SMPS_MODE_ACT_AUTO;
  		c32k = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
  	}
  	/* Set SMPS9 to 2.1 V (for TWL604x), or to 0 (off) */
  	err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_VOLTAGE, vval);
  	if (err) {
  		printf("twl603x: could not set SMPS9 voltage: err = %d
  ",
  		       err);
  		return err;
  	}
  	/* Turn on or off SMPS9 */
  	err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_CTRL, cval);
  	if (err) {
  		printf("twl603x: could not turn SMPS9 %s: err = %d
  ",
  		       cval ? "on" : "off", err);
  		return err;
  	}
  	/* Output 32 kHz clock on or off */
  	err = palmas_i2c_write_u8(TWL603X_CHIP_P1, CLK32KGAUDIO_CTRL, c32k);
  	if (err)
  		printf("twl603x: could not turn CLK32KGAUDIO %s: err = %d
  ",
  		       c32k ? "on" : "off", err);
  	return err;
  }
  #endif
  
  #ifdef CONFIG_PALMAS_USB_SS_PWR
  /**
   * @brief palmas_enable_ss_ldo - Configure EVM board specific configurations
   * for the USB Super speed SMPS10 regulator.
   *
   * @return 0
   */
  int palmas_enable_ss_ldo(void)
  {
  	/* Enable smps10 regulator  */
  	return palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS10_CTRL,
  				SMPS10_MODE_ACTIVE_D);
  }
  #endif
  
  /*
   * Enable/disable back-up battery (or super cap) charging on TWL6035/37.
   * Please use defined BB_xxx values.
   */
  int twl603x_enable_bb_charge(u8 bb_fields)
  {
  	u8 val = bb_fields & 0x0f;
  	int err;
  
  	val |= (VRTC_EN_SLP | VRTC_EN_OFF | VRTC_PWEN);
  	err = palmas_i2c_write_u8(TWL603X_CHIP_P1, BB_VRTC_CTRL, val);
  	if (err)
  		printf("twl603x: could not set BB_VRTC_CTRL to 0x%02x: err = %d
  ",
  		       val, err);
  	return err;
  }