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SRICHARAN R21144292012-03-12 02:25:48 +00001/*
Nishanth Menoncb199102013-03-26 05:20:54 +00002 * (C) Copyright 2012-2013
SRICHARAN R21144292012-03-12 02:25:48 +00003 * Texas Instruments, <www.ti.com>
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23#include <config.h>
Nishanth Menoncb199102013-03-26 05:20:54 +000024#include <palmas.h>
SRICHARAN R21144292012-03-12 02:25:48 +000025
Nishanth Menon12733882013-03-26 05:20:55 +000026void palmas_init_settings(void)
SRICHARAN R21144292012-03-12 02:25:48 +000027{
Lubomir Popove9090fa2013-06-06 04:16:40 +000028#ifdef CONFIG_PALMAS_SMPS7_FPWM
29 int err;
30 /*
31 * Set SMPS7 (1.8 V I/O supply on platforms with TWL6035/37) to
32 * forced PWM mode. This reduces noise (but affects efficiency).
33 */
34 u8 val = SMPS_MODE_SLP_FPWM | SMPS_MODE_ACT_FPWM;
35 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS7_CTRL, val);
36 if (err)
37 printf("palmas: could not force PWM for SMPS7: err = %d\n",
38 err);
39#endif
SRICHARAN R21144292012-03-12 02:25:48 +000040}
Balaji T Kdd23e592012-03-12 02:25:49 +000041
Nishanth Menon384bcae2013-03-26 05:20:56 +000042int palmas_mmc1_poweron_ldo(void)
Balaji T Kdd23e592012-03-12 02:25:49 +000043{
44 u8 val = 0;
45
Lubomir Popove9090fa2013-06-06 04:16:40 +000046#if defined(CONFIG_DRA7XX)
47 /*
48 * Currently valid for the dra7xx_evm board:
49 * Set TPS659038 LDO1 to 3.0 V
50 */
51 val = LDO_VOLT_3V0;
52 if (palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_VOLTAGE, val)) {
53 printf("tps65903x: could not set LDO1 voltage.\n");
Vincent Stehléce851c82012-12-03 05:23:17 +000054 return 1;
55 }
Lubomir Popove9090fa2013-06-06 04:16:40 +000056 /* TURN ON LDO1 */
57 val = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
58 if (palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_CTRL, val)) {
59 printf("tps65903x: could not turn on LDO1.\n");
Vincent Stehléce851c82012-12-03 05:23:17 +000060 return 1;
61 }
Vincent Stehléce851c82012-12-03 05:23:17 +000062 return 0;
Lubomir Popove9090fa2013-06-06 04:16:40 +000063#else
64 /*
65 * We assume that this is a OMAP543X + TWL603X board:
66 * Set TWL6035/37 LDO9 to 3.0 V
67 */
68 val = LDO_VOLT_3V0;
69 return twl603x_mmc1_set_ldo9(val);
70#endif
71}
72
73/*
74 * On some OMAP5 + TWL603X hardware the SD card socket and LDO9_IN are
75 * powered by an external 3.3 V regulator, while the output of LDO9
76 * supplies VDDS_SDCARD for the OMAP5 interface only. This implies that
77 * LDO9 could be set to 'bypass' mode when required (e.g. for 3.3 V cards).
78 */
79int twl603x_mmc1_set_ldo9(u8 vsel)
80{
81 u8 cval = 0, vval = 0; /* Off by default */
82 int err;
83
84 if (vsel) {
85 /* Turn on */
86 if (vsel > LDO_VOLT_3V3) {
87 /* Put LDO9 in bypass */
88 cval = LDO9_BYP_EN | RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
89 vval = LDO_VOLT_3V3;
90 } else {
91 cval = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
92 vval = vsel & 0x3f;
93 }
94 }
95 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_VOLTAGE, vval);
96 if (err) {
97 printf("twl603x: could not set LDO9 %s: err = %d\n",
98 vsel > LDO_VOLT_3V3 ? "bypass" : "voltage", err);
99 return err;
100 }
101 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_CTRL, cval);
102 if (err)
103 printf("twl603x: could not turn %s LDO9: err = %d\n",
104 cval ? "on" : "off", err);
105 return err;
106}
107
108#ifdef CONFIG_PALMAS_AUDPWR
109/*
110 * Turn audio codec power and 32 kHz clock on/off. Use for
111 * testing OMAP543X + TWL603X + TWL604X boards only.
112 */
113int twl603x_audio_power(u8 on)
114{
115 u8 cval = 0, vval = 0, c32k = 0;
116 int err;
117
118 if (on) {
119 vval = SMPS_VOLT_2V1;
120 cval = SMPS_MODE_SLP_AUTO | SMPS_MODE_ACT_AUTO;
121 c32k = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
122 }
123 /* Set SMPS9 to 2.1 V (for TWL604x), or to 0 (off) */
124 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_VOLTAGE, vval);
125 if (err) {
126 printf("twl603x: could not set SMPS9 voltage: err = %d\n",
127 err);
128 return err;
129 }
130 /* Turn on or off SMPS9 */
131 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_CTRL, cval);
132 if (err) {
133 printf("twl603x: could not turn SMPS9 %s: err = %d\n",
134 cval ? "on" : "off", err);
135 return err;
136 }
137 /* Output 32 kHz clock on or off */
138 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, CLK32KGAUDIO_CTRL, c32k);
139 if (err)
140 printf("twl603x: could not turn CLK32KGAUDIO %s: err = %d\n",
141 c32k ? "on" : "off", err);
142 return err;
143}
144#endif
145
146/*
147 * Enable/disable back-up battery (or super cap) charging on TWL6035/37.
148 * Please use defined BB_xxx values.
149 */
150int twl603x_enable_bb_charge(u8 bb_fields)
151{
152 u8 val = bb_fields & 0x0f;
153 int err;
154
155 val |= (VRTC_EN_SLP | VRTC_EN_OFF | VRTC_PWEN);
156 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, BB_VRTC_CTRL, val);
157 if (err)
158 printf("twl603x: could not set BB_VRTC_CTRL to 0x%02x: err = %d\n",
159 val, err);
160 return err;
Balaji T Kdd23e592012-03-12 02:25:49 +0000161}