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 10 void 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 26 #if defined(CONFIG_OMAP54XX) 27 int lp873x_mmc1_poweron_ldo(uint voltage) 28 { 29 if (palmas_i2c_write_u8(LP873X_LDO1_ADDR, LP873X_LDO1_VOLTAGE, 30 voltage)) { 31 printf("lp873x: could not set LDO1 voltage.\n"); 32 return 1; 33 } 34 /* TURN ON LDO1 */ 35 if (palmas_i2c_write_u8(LP873X_LDO1_ADDR, LP873X_LDO1_CTRL, 36 LP873X_LDO_CTRL_EN | LP873X_LDO_CTRL_RDIS_EN)) { 37 printf("lp873x: could not turn on LDO1.\n"); 38 return 1; 39 } 40 return 0; 41 42 } 43 #endif 44 45 int palmas_mmc1_poweron_ldo(uint voltage) 46 { 47 u8 val = 0; 48 49 #if defined(CONFIG_DRA7XX) 50 int ret; 51 /* 52 * Currently valid for the dra7xx_evm board: 53 * Set TPS659038 LDO1 to 3.0 V 54 */ 55 val = LDO_VOLT_3V0; 56 ret = palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_VOLTAGE, val); 57 if (ret) { 58 printf("tps65903x: could not set LDO1 voltage.\n"); 59 return ret; 60 } 61 /* TURN ON LDO1 */ 62 val = RSC_MODE_SLEEP | RSC_MODE_ACTIVE; 63 ret = palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_CTRL, val); 64 if (ret) { 65 printf("tps65903x: could not turn on LDO1.\n"); 66 return ret; 67 } 68 return 0; 69 #else 70 /* 71 * We assume that this is a OMAP543X + TWL603X board: 72 * Set TWL6035/37 LDO9 to 3.0 V 73 */ 74 val = LDO_VOLT_3V0; 75 return twl603x_mmc1_set_ldo9(val); 76 #endif 77 } 78 79 /* 80 * On some OMAP5 + TWL603X hardware the SD card socket and LDO9_IN are 81 * powered by an external 3.3 V regulator, while the output of LDO9 82 * supplies VDDS_SDCARD for the OMAP5 interface only. This implies that 83 * LDO9 could be set to 'bypass' mode when required (e.g. for 3.3 V cards). 84 */ 85 int twl603x_mmc1_set_ldo9(u8 vsel) 86 { 87 u8 cval = 0, vval = 0; /* Off by default */ 88 int err; 89 90 if (vsel) { 91 /* Turn on */ 92 if (vsel > LDO_VOLT_3V3) { 93 /* Put LDO9 in bypass */ 94 cval = LDO9_BYP_EN | RSC_MODE_SLEEP | RSC_MODE_ACTIVE; 95 vval = LDO_VOLT_3V3; 96 } else { 97 cval = RSC_MODE_SLEEP | RSC_MODE_ACTIVE; 98 vval = vsel & 0x3f; 99 } 100 } 101 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_VOLTAGE, vval); 102 if (err) { 103 printf("twl603x: could not set LDO9 %s: err = %d\n", 104 vsel > LDO_VOLT_3V3 ? "bypass" : "voltage", err); 105 return err; 106 } 107 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_CTRL, cval); 108 if (err) 109 printf("twl603x: could not turn %s LDO9: err = %d\n", 110 cval ? "on" : "off", err); 111 return err; 112 } 113 114 #ifdef CONFIG_PALMAS_AUDPWR 115 /* 116 * Turn audio codec power and 32 kHz clock on/off. Use for 117 * testing OMAP543X + TWL603X + TWL604X boards only. 118 */ 119 int twl603x_audio_power(u8 on) 120 { 121 u8 cval = 0, vval = 0, c32k = 0; 122 int err; 123 124 if (on) { 125 vval = SMPS_VOLT_2V1; 126 cval = SMPS_MODE_SLP_AUTO | SMPS_MODE_ACT_AUTO; 127 c32k = RSC_MODE_SLEEP | RSC_MODE_ACTIVE; 128 } 129 /* Set SMPS9 to 2.1 V (for TWL604x), or to 0 (off) */ 130 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_VOLTAGE, vval); 131 if (err) { 132 printf("twl603x: could not set SMPS9 voltage: err = %d\n", 133 err); 134 return err; 135 } 136 /* Turn on or off SMPS9 */ 137 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_CTRL, cval); 138 if (err) { 139 printf("twl603x: could not turn SMPS9 %s: err = %d\n", 140 cval ? "on" : "off", err); 141 return err; 142 } 143 /* Output 32 kHz clock on or off */ 144 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, CLK32KGAUDIO_CTRL, c32k); 145 if (err) 146 printf("twl603x: could not turn CLK32KGAUDIO %s: err = %d\n", 147 c32k ? "on" : "off", err); 148 return err; 149 } 150 #endif 151 152 #ifdef CONFIG_PALMAS_USB_SS_PWR 153 /** 154 * @brief palmas_enable_ss_ldo - Configure EVM board specific configurations 155 * for the USB Super speed SMPS10 regulator. 156 * 157 * @return 0 158 */ 159 int palmas_enable_ss_ldo(void) 160 { 161 /* Enable smps10 regulator */ 162 return palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS10_CTRL, 163 SMPS10_MODE_ACTIVE_D); 164 } 165 #endif 166 167 /* 168 * Enable/disable back-up battery (or super cap) charging on TWL6035/37. 169 * Please use defined BB_xxx values. 170 */ 171 int twl603x_enable_bb_charge(u8 bb_fields) 172 { 173 u8 val = bb_fields & 0x0f; 174 int err; 175 176 val |= (VRTC_EN_SLP | VRTC_EN_OFF | VRTC_PWEN); 177 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, BB_VRTC_CTRL, val); 178 if (err) 179 printf("twl603x: could not set BB_VRTC_CTRL to 0x%02x: err = %d\n", 180 val, err); 181 return err; 182 } 183