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/*
* (C) Copyright 2012-2013
* Texas Instruments, <www.ti.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
*/
#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\n",
err);
#endif
}
int palmas_mmc1_poweron_ldo(void)
{
u8 val = 0;
#if defined(CONFIG_DRA7XX)
/*
* 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.\n");
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.\n");
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\n",
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\n",
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\n",
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\n",
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\n",
c32k ? "on" : "off", err);
return err;
}
#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\n",
val, err);
return err;
}
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