blob: c6d06f19e9b15982a45b0873c32d5d2c196ff5e3 [file] [log] [blame]
Steve Sakoman516799f2010-07-15 12:53:42 -07001/*
2 * (C) Copyright 2010
3 * Texas Instruments, <www.ti.com>
4 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02005 * SPDX-License-Identifier: GPL-2.0+
Steve Sakoman516799f2010-07-15 12:53:42 -07006 */
7#include <config.h>
8#ifdef CONFIG_TWL6030_POWER
9
10#include <twl6030.h>
11
Oleg Koshelievfc889502013-10-08 15:49:55 +030012static struct twl6030_data *twl;
13
14static struct twl6030_data twl6030_info = {
15 .chip_type = chip_TWL6030,
16 .adc_rbase = GPCH0_LSB,
17 .adc_ctrl = CTRL_P2,
18 .adc_enable = CTRL_P2_SP2,
19 .vbat_mult = TWL6030_VBAT_MULT,
20 .vbat_shift = TWL6030_VBAT_SHIFT,
21};
22
Oleg Kosheliev340e6c82013-10-08 15:49:56 +030023static struct twl6030_data twl6032_info = {
24 .chip_type = chip_TWL6032,
25 .adc_rbase = TWL6032_GPCH0_LSB,
26 .adc_ctrl = TWL6032_CTRL_P1,
27 .adc_enable = CTRL_P1_SP1,
28 .vbat_mult = TWL6032_VBAT_MULT,
29 .vbat_shift = TWL6032_VBAT_SHIFT,
30};
31
Balaji T K3e664f62010-11-25 16:22:04 +053032static int twl6030_gpadc_read_channel(u8 channel_no)
33{
34 u8 lsb = 0;
35 u8 msb = 0;
36 int ret = 0;
37
Nishanth Menon345ef202013-03-26 05:20:51 +000038 ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC,
Oleg Koshelievfc889502013-10-08 15:49:55 +030039 twl->adc_rbase + channel_no * 2, &lsb);
Balaji T K3e664f62010-11-25 16:22:04 +053040 if (ret)
41 return ret;
42
Nishanth Menon345ef202013-03-26 05:20:51 +000043 ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC,
Oleg Koshelievfc889502013-10-08 15:49:55 +030044 twl->adc_rbase + 1 + channel_no * 2, &msb);
Balaji T K3e664f62010-11-25 16:22:04 +053045 if (ret)
46 return ret;
47
48 return (msb << 8) | lsb;
49}
50
51static int twl6030_gpadc_sw2_trigger(void)
52{
53 u8 val;
54 int ret = 0;
55
Oleg Koshelievfc889502013-10-08 15:49:55 +030056 ret = twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
57 twl->adc_ctrl, twl->adc_enable);
Balaji T K3e664f62010-11-25 16:22:04 +053058 if (ret)
59 return ret;
60
61 /* Waiting until the SW1 conversion ends*/
62 val = CTRL_P2_BUSY;
63
64 while (!((val & CTRL_P2_EOCP2) && (!(val & CTRL_P2_BUSY)))) {
Oleg Koshelievfc889502013-10-08 15:49:55 +030065 ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC,
66 twl->adc_ctrl, &val);
Balaji T K3e664f62010-11-25 16:22:04 +053067 if (ret)
68 return ret;
69 udelay(1000);
70 }
71
72 return 0;
73}
74
75void twl6030_stop_usb_charging(void)
76{
Nishanth Menon345ef202013-03-26 05:20:51 +000077 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CONTROLLER_CTRL1, 0);
Balaji T K3e664f62010-11-25 16:22:04 +053078
79 return;
80}
81
Steve Sakoman516799f2010-07-15 12:53:42 -070082void twl6030_start_usb_charging(void)
83{
Nishanth Menon345ef202013-03-26 05:20:51 +000084 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
85 CHARGERUSB_VICHRG, CHARGERUSB_VICHRG_1500);
86 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
87 CHARGERUSB_CINLIMIT, CHARGERUSB_CIN_LIMIT_NONE);
88 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
89 CONTROLLER_INT_MASK, MBAT_TEMP);
90 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
91 CHARGERUSB_INT_MASK, MASK_MCHARGERUSB_THMREG);
92 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
93 CHARGERUSB_VOREG, CHARGERUSB_VOREG_4P0);
94 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
95 CHARGERUSB_CTRL2, CHARGERUSB_CTRL2_VITERM_400);
96 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_CTRL1, TERM);
Steve Sakoman516799f2010-07-15 12:53:42 -070097 /* Enable USB charging */
Nishanth Menon345ef202013-03-26 05:20:51 +000098 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
99 CONTROLLER_CTRL1, CONTROLLER_CTRL1_EN_CHARGER);
Steve Sakoman516799f2010-07-15 12:53:42 -0700100 return;
101}
102
Balaji T K3e664f62010-11-25 16:22:04 +0530103int twl6030_get_battery_current(void)
104{
105 int battery_current = 0;
106 u8 msb = 0;
107 u8 lsb = 0;
108
Nishanth Menon345ef202013-03-26 05:20:51 +0000109 twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, FG_REG_11, &msb);
110 twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, FG_REG_10, &lsb);
Balaji T K3e664f62010-11-25 16:22:04 +0530111 battery_current = ((msb << 8) | lsb);
112
113 /* convert 10 bit signed number to 16 bit signed number */
114 if (battery_current >= 0x2000)
115 battery_current = (battery_current - 0x4000);
116
117 battery_current = battery_current * 3000 / 4096;
118 printf("Battery Current: %d mA\n", battery_current);
119
120 return battery_current;
121}
122
123int twl6030_get_battery_voltage(void)
124{
125 int battery_volt = 0;
126 int ret = 0;
Oleg Kosheliev340e6c82013-10-08 15:49:56 +0300127 u8 vbatch;
128
129 if (twl->chip_type == chip_TWL6030) {
130 vbatch = TWL6030_GPADC_VBAT_CHNL;
131 } else {
132 ret = twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
133 TWL6032_GPSELECT_ISB,
134 TWL6032_GPADC_VBAT_CHNL);
135 if (ret)
136 return ret;
137 vbatch = 0;
138 }
Balaji T K3e664f62010-11-25 16:22:04 +0530139
140 /* Start GPADC SW conversion */
141 ret = twl6030_gpadc_sw2_trigger();
142 if (ret) {
143 printf("Failed to convert battery voltage\n");
144 return ret;
145 }
146
147 /* measure Vbat voltage */
Oleg Kosheliev340e6c82013-10-08 15:49:56 +0300148 battery_volt = twl6030_gpadc_read_channel(vbatch);
Balaji T K3e664f62010-11-25 16:22:04 +0530149 if (battery_volt < 0) {
150 printf("Failed to read battery voltage\n");
151 return ret;
152 }
Oleg Koshelievfc889502013-10-08 15:49:55 +0300153 battery_volt = (battery_volt * twl->vbat_mult) >> twl->vbat_shift;
Balaji T K3e664f62010-11-25 16:22:04 +0530154 printf("Battery Voltage: %d mV\n", battery_volt);
155
156 return battery_volt;
157}
158
Steve Sakoman516799f2010-07-15 12:53:42 -0700159void twl6030_init_battery_charging(void)
160{
Oleg Kosheliev340e6c82013-10-08 15:49:56 +0300161 u8 val = 0;
Balaji T K3e664f62010-11-25 16:22:04 +0530162 int battery_volt = 0;
163 int ret = 0;
164
Oleg Kosheliev340e6c82013-10-08 15:49:56 +0300165 ret = twl6030_i2c_read_u8(TWL6030_CHIP_USB, USB_PRODUCT_ID_LSB, &val);
166 if (ret) {
167 puts("twl6030_init_battery_charging(): could not determine chip!\n");
168 return;
169 }
170 if (val == 0x30) {
171 twl = &twl6030_info;
172 } else if (val == 0x32) {
173 twl = &twl6032_info;
174 } else {
175 puts("twl6030_init_battery_charging(): unsupported chip type\n");
176 return;
177 }
Oleg Koshelievfc889502013-10-08 15:49:55 +0300178
Balaji T K3e664f62010-11-25 16:22:04 +0530179 /* Enable VBAT measurement */
Oleg Kosheliev340e6c82013-10-08 15:49:56 +0300180 if (twl->chip_type == chip_TWL6030) {
181 twl6030_i2c_write_u8(TWL6030_CHIP_PM, MISC1, VBAT_MEAS);
182 twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
183 TWL6030_GPADC_CTRL,
184 GPADC_CTRL_SCALER_DIV4);
185 } else {
186 twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
187 TWL6032_GPADC_CTRL2,
188 GPADC_CTRL2_CH18_SCALER_EN);
189 }
Balaji T K3e664f62010-11-25 16:22:04 +0530190
191 /* Enable GPADC module */
Nishanth Menon345ef202013-03-26 05:20:51 +0000192 ret = twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, TOGGLE1, FGS | GPADCS);
Balaji T K3e664f62010-11-25 16:22:04 +0530193 if (ret) {
194 printf("Failed to enable GPADC\n");
195 return;
196 }
197
198 battery_volt = twl6030_get_battery_voltage();
199 if (battery_volt < 0)
200 return;
201
202 if (battery_volt < 3000)
203 printf("Main battery voltage too low!\n");
204
205 /* Check for the presence of USB charger */
Oleg Kosheliev340e6c82013-10-08 15:49:56 +0300206 twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, CONTROLLER_STAT1, &val);
Balaji T K3e664f62010-11-25 16:22:04 +0530207
208 /* check for battery presence indirectly via Fuel gauge */
Oleg Kosheliev340e6c82013-10-08 15:49:56 +0300209 if ((val & VBUS_DET) && (battery_volt < 3300))
Balaji T K3e664f62010-11-25 16:22:04 +0530210 twl6030_start_usb_charging();
211
Steve Sakoman516799f2010-07-15 12:53:42 -0700212 return;
213}
214
Paul Kocialkowskia85362f2016-02-27 19:18:51 +0100215void twl6030_power_mmc_init(int dev_index)
Balaji T K14fa2dd2011-09-08 06:34:57 +0000216{
Paul Kocialkowskid7b6a752016-02-27 19:18:50 +0100217 u8 value = 0;
218
Paul Kocialkowskia85362f2016-02-27 19:18:51 +0100219 if (dev_index == 0) {
220 /* 3.0V voltage output for VMMC */
221 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_VOLTAGE,
222 TWL6030_CFG_VOLTAGE_30);
Paul Kocialkowskic5dbae72016-02-27 19:18:49 +0100223
Paul Kocialkowskia85362f2016-02-27 19:18:51 +0100224 /* Enable P1 output for VMMC */
225 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_STATE,
226 TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
Paul Kocialkowskid7b6a752016-02-27 19:18:50 +0100227
Paul Kocialkowskia85362f2016-02-27 19:18:51 +0100228 twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_PH_STS_BOOT, &value);
229 } else if (dev_index == 1) {
230 /* BOOT2 indicates 1.8V/2.8V VAUX1 for eMMC */
231 if (value & TWL6030_PH_STS_BOOT2) {
232 /* 1.8V voltage output for VAUX1 */
233 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
234 TWL6030_CFG_VOLTAGE_18);
235 } else {
236 /* 2.8V voltage output for VAUX1 */
237 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
238 TWL6030_CFG_VOLTAGE_28);
239 }
Paul Kocialkowskid7b6a752016-02-27 19:18:50 +0100240
Paul Kocialkowskia85362f2016-02-27 19:18:51 +0100241 /* Enable P1 output for VAUX */
242 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_STATE,
243 TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
Paul Kocialkowskid7b6a752016-02-27 19:18:50 +0100244 }
Balaji T K14fa2dd2011-09-08 06:34:57 +0000245}
246
Steve Sakoman516799f2010-07-15 12:53:42 -0700247void twl6030_usb_device_settings()
248{
Paul Kocialkowskic5dbae72016-02-27 19:18:49 +0100249 u8 value = 0;
Steve Sakoman516799f2010-07-15 12:53:42 -0700250
Paul Kocialkowski0343f712016-02-27 19:19:03 +0100251 /* 3.3V voltage output for VUSB */
252 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VUSB_CFG_VOLTAGE,
253 TWL6030_CFG_VOLTAGE_33);
254
Paul Kocialkowskic5dbae72016-02-27 19:18:49 +0100255 /* Enable P1 output for VUSB */
256 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VUSB_CFG_STATE,
257 TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
Steve Sakoman516799f2010-07-15 12:53:42 -0700258
Paul Kocialkowskic5dbae72016-02-27 19:18:49 +0100259 /* Select the input supply for VUSB regulator */
260 twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_MISC2, &value);
261 value |= TWL6030_MISC2_VUSB_IN_VSYS;
Paul Kocialkowski6313c652016-02-27 19:19:04 +0100262 value &= ~TWL6030_MISC2_VUSB_IN_PMID;
Paul Kocialkowskic5dbae72016-02-27 19:18:49 +0100263 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_MISC2, value);
Steve Sakoman516799f2010-07-15 12:53:42 -0700264}
265#endif