LXR uboot/drivers/power/palmas.c

   1/*
   2 * (C) Copyright 2012-2013
   3 * Texas Instruments, <www.ti.com>
   4 *
   5 * SPDX-License-Identifier:     GPL-2.0+
   6 */
   7#include <config.h>
   8#include <palmas.h>
   9
  10void palmas_init_settings(void)
  11{
  12#ifdef CONFIG_PALMAS_SMPS7_FPWM
  13        int err;
  14        /*
  15         * Set SMPS7 (1.8 V I/O supply on platforms with TWL6035/37) to
  16         * forced PWM mode. This reduces noise (but affects efficiency).
  17         */
  18        u8 val = SMPS_MODE_SLP_FPWM | SMPS_MODE_ACT_FPWM;
  19        err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS7_CTRL, val);
  20        if (err)
  21                printf("palmas: could not force PWM for SMPS7: err = %d\n",
  22                       err);
  23#endif
  24}
  25
  26int palmas_mmc1_poweron_ldo(void)
  27{
  28        u8 val = 0;
  29
  30#if defined(CONFIG_DRA7XX) || defined(CONFIG_AM57XX)
  31        /*
  32         * Currently valid for the dra7xx_evm board:
  33         * Set TPS659038 LDO1 to 3.0 V
  34         */
  35        val = LDO_VOLT_3V0;
  36        if (palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_VOLTAGE, val)) {
  37                printf("tps65903x: could not set LDO1 voltage.\n");
  38                return 1;
  39        }
  40        /* TURN ON LDO1 */
  41        val = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
  42        if (palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_CTRL, val)) {
  43                printf("tps65903x: could not turn on LDO1.\n");
  44                return 1;
  45        }
  46        return 0;
  47#else
  48        /*
  49         * We assume that this is a OMAP543X + TWL603X board:
  50         * Set TWL6035/37 LDO9 to 3.0 V
  51         */
  52        val = LDO_VOLT_3V0;
  53        return twl603x_mmc1_set_ldo9(val);
  54#endif
  55}
  56
  57/*
  58 * On some OMAP5 + TWL603X hardware the SD card socket and LDO9_IN are
  59 * powered by an external 3.3 V regulator, while the output of LDO9
  60 * supplies VDDS_SDCARD for the OMAP5 interface only. This implies that
  61 * LDO9 could be set to 'bypass' mode when required (e.g. for 3.3 V cards).
  62 */
  63int twl603x_mmc1_set_ldo9(u8 vsel)
  64{
  65        u8 cval = 0, vval = 0;  /* Off by default */
  66        int err;
  67
  68        if (vsel) {
  69                /* Turn on */
  70                if (vsel > LDO_VOLT_3V3) {
  71                        /* Put LDO9 in bypass */
  72                        cval = LDO9_BYP_EN | RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
  73                        vval = LDO_VOLT_3V3;
  74                } else {
  75                        cval = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
  76                        vval = vsel & 0x3f;
  77                }
  78        }
  79        err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_VOLTAGE, vval);
  80        if (err) {
  81                printf("twl603x: could not set LDO9 %s: err = %d\n",
  82                       vsel > LDO_VOLT_3V3 ? "bypass" : "voltage", err);
  83                return err;
  84        }
  85        err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_CTRL, cval);
  86        if (err)
  87                printf("twl603x: could not turn %s LDO9: err = %d\n",
  88                       cval ? "on" : "off", err);
  89        return err;
  90}
  91
  92#ifdef CONFIG_PALMAS_AUDPWR
  93/*
  94 * Turn audio codec power and 32 kHz clock on/off. Use for
  95 * testing OMAP543X + TWL603X + TWL604X boards only.
  96 */
  97int twl603x_audio_power(u8 on)
  98{
  99        u8 cval = 0, vval = 0, c32k = 0;
 100        int err;
 101
 102        if (on) {
 103                vval = SMPS_VOLT_2V1;
 104                cval = SMPS_MODE_SLP_AUTO | SMPS_MODE_ACT_AUTO;
 105                c32k = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
 106        }
 107        /* Set SMPS9 to 2.1 V (for TWL604x), or to 0 (off) */
 108        err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_VOLTAGE, vval);
 109        if (err) {
 110                printf("twl603x: could not set SMPS9 voltage: err = %d\n",
 111                       err);
 112                return err;
 113        }
 114        /* Turn on or off SMPS9 */
 115        err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_CTRL, cval);
 116        if (err) {
 117                printf("twl603x: could not turn SMPS9 %s: err = %d\n",
 118                       cval ? "on" : "off", err);
 119                return err;
 120        }
 121        /* Output 32 kHz clock on or off */
 122        err = palmas_i2c_write_u8(TWL603X_CHIP_P1, CLK32KGAUDIO_CTRL, c32k);
 123        if (err)
 124                printf("twl603x: could not turn CLK32KGAUDIO %s: err = %d\n",
 125                       c32k ? "on" : "off", err);
 126        return err;
 127}
 128#endif
 129
 130#ifdef CONFIG_PALMAS_USB_SS_PWR
 131/**
 132 * @brief palmas_enable_ss_ldo - Configure EVM board specific configurations
 133 * for the USB Super speed SMPS10 regulator.
 134 *
 135 * @return 0
 136 */
 137int palmas_enable_ss_ldo(void)
 138{
 139        /* Enable smps10 regulator  */
 140        return palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS10_CTRL,
 141                                SMPS10_MODE_ACTIVE_D);
 142}
 143#endif
 144
 145/*
 146 * Enable/disable back-up battery (or super cap) charging on TWL6035/37.
 147 * Please use defined BB_xxx values.
 148 */
 149int twl603x_enable_bb_charge(u8 bb_fields)
 150{
 151        u8 val = bb_fields & 0x0f;
 152        int err;
 153
 154        val |= (VRTC_EN_SLP | VRTC_EN_OFF | VRTC_PWEN);
 155        err = palmas_i2c_write_u8(TWL603X_CHIP_P1, BB_VRTC_CTRL, val);
 156        if (err)
 157                printf("twl603x: could not set BB_VRTC_CTRL to 0x%02x: err = %d\n",
 158                       val, err);
 159        return err;
 160}
 161