1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2012-2013
* Texas Instruments, <www.ti.com>
*/
#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
}
#if defined(CONFIG_OMAP54XX)
int lp873x_mmc1_poweron_ldo(uint voltage)
{
if (palmas_i2c_write_u8(LP873X_LDO1_ADDR, LP873X_LDO1_VOLTAGE,
voltage)) {
printf("lp873x: could not set LDO1 voltage.\n");
return 1;
}
/* TURN ON LDO1 */
if (palmas_i2c_write_u8(LP873X_LDO1_ADDR, LP873X_LDO1_CTRL,
LP873X_LDO_CTRL_EN | LP873X_LDO_CTRL_RDIS_EN)) {
printf("lp873x: could not turn on LDO1.\n");
return 1;
}
return 0;
}
#endif
int palmas_mmc1_poweron_ldo(uint ldo_volt, uint ldo_ctrl, uint voltage)
{
u8 val = 0;
#if defined(CONFIG_DRA7XX)
int ret;
ret = palmas_i2c_write_u8(TPS65903X_CHIP_P1, ldo_volt, voltage);
if (ret) {
printf("tps65903x: could not set LDO1 voltage.\n");
return ret;
}
/* TURN ON LDO1 */
val = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
ret = palmas_i2c_write_u8(TPS65903X_CHIP_P1, ldo_ctrl, val);
if (ret) {
printf("tps65903x: could not turn on LDO1.\n");
return ret;
}
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
#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\n",
val, err);
return err;
}
#ifdef CONFIG_DM_I2C
int palmas_i2c_write_u8(u8 chip_no, u8 reg, u8 val)
{
struct udevice *dev;
int ret;
ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
if (ret) {
pr_err("unable to get I2C bus. ret %d\n", ret);
return ret;
}
ret = dm_i2c_reg_write(dev, reg, val);
if (ret) {
pr_err("writing to palmas failed. ret %d\n", ret);
return ret;
}
return 0;
}
int palmas_i2c_read_u8(u8 chip_no, u8 reg, u8 *valp)
{
struct udevice *dev;
int ret;
ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
if (ret) {
pr_err("unable to get I2C bus. ret %d\n", ret);
return ret;
}
ret = dm_i2c_reg_read(dev, reg);
if (ret < 0) {
pr_err("reading from palmas failed. ret %d\n", ret);
return ret;
}
*valp = (u8)ret;
return 0;
}
#endif
|
