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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Steve Sakoman516799f2010-07-15 12:53:42 -07002/*
3 * (C) Copyright 2010
4 * Texas Instruments, <www.ti.com>
Steve Sakoman516799f2010-07-15 12:53:42 -07005 */
6#include <config.h>
Simon Glassc05ed002020-05-10 11:40:11 -06007#include <linux/delay.h>
Steve Sakoman516799f2010-07-15 12:53:42 -07008
9#include <twl6030.h>
10
Oleg Koshelievfc889502013-10-08 15:49:55 +030011static struct twl6030_data *twl;
12
13static struct twl6030_data twl6030_info = {
14 .chip_type = chip_TWL6030,
15 .adc_rbase = GPCH0_LSB,
16 .adc_ctrl = CTRL_P2,
17 .adc_enable = CTRL_P2_SP2,
18 .vbat_mult = TWL6030_VBAT_MULT,
19 .vbat_shift = TWL6030_VBAT_SHIFT,
20};
21
Oleg Kosheliev340e6c82013-10-08 15:49:56 +030022static struct twl6030_data twl6032_info = {
23 .chip_type = chip_TWL6032,
24 .adc_rbase = TWL6032_GPCH0_LSB,
25 .adc_ctrl = TWL6032_CTRL_P1,
26 .adc_enable = CTRL_P1_SP1,
27 .vbat_mult = TWL6032_VBAT_MULT,
28 .vbat_shift = TWL6032_VBAT_SHIFT,
29};
30
Paul Kocialkowskid6a20422016-02-27 19:19:12 +010031
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
Paul Kocialkowskid6a20422016-02-27 19:19:12 +010075void twl6030_power_off(void)
76{
77 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_PHOENIX_DEV_ON,
78 TWL6030_PHOENIX_APP_DEVOFF | TWL6030_PHOENIX_CON_DEVOFF |
79 TWL6030_PHOENIX_MOD_DEVOFF);
80}
81
Balaji T K3e664f62010-11-25 16:22:04 +053082void twl6030_stop_usb_charging(void)
83{
Nishanth Menon345ef202013-03-26 05:20:51 +000084 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CONTROLLER_CTRL1, 0);
Balaji T K3e664f62010-11-25 16:22:04 +053085
86 return;
87}
88
Steve Sakoman516799f2010-07-15 12:53:42 -070089void twl6030_start_usb_charging(void)
90{
Nishanth Menon345ef202013-03-26 05:20:51 +000091 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
92 CHARGERUSB_VICHRG, CHARGERUSB_VICHRG_1500);
93 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
94 CHARGERUSB_CINLIMIT, CHARGERUSB_CIN_LIMIT_NONE);
95 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
96 CONTROLLER_INT_MASK, MBAT_TEMP);
97 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
98 CHARGERUSB_INT_MASK, MASK_MCHARGERUSB_THMREG);
99 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
100 CHARGERUSB_VOREG, CHARGERUSB_VOREG_4P0);
101 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
102 CHARGERUSB_CTRL2, CHARGERUSB_CTRL2_VITERM_400);
103 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_CTRL1, TERM);
Steve Sakoman516799f2010-07-15 12:53:42 -0700104 /* Enable USB charging */
Nishanth Menon345ef202013-03-26 05:20:51 +0000105 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
106 CONTROLLER_CTRL1, CONTROLLER_CTRL1_EN_CHARGER);
Steve Sakoman516799f2010-07-15 12:53:42 -0700107 return;
108}
109
Balaji T K3e664f62010-11-25 16:22:04 +0530110int twl6030_get_battery_current(void)
111{
112 int battery_current = 0;
113 u8 msb = 0;
114 u8 lsb = 0;
115
Nishanth Menon345ef202013-03-26 05:20:51 +0000116 twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, FG_REG_11, &msb);
117 twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, FG_REG_10, &lsb);
Balaji T K3e664f62010-11-25 16:22:04 +0530118 battery_current = ((msb << 8) | lsb);
119
120 /* convert 10 bit signed number to 16 bit signed number */
121 if (battery_current >= 0x2000)
122 battery_current = (battery_current - 0x4000);
123
124 battery_current = battery_current * 3000 / 4096;
125 printf("Battery Current: %d mA\n", battery_current);
126
127 return battery_current;
128}
129
130int twl6030_get_battery_voltage(void)
131{
132 int battery_volt = 0;
133 int ret = 0;
Oleg Kosheliev340e6c82013-10-08 15:49:56 +0300134 u8 vbatch;
135
136 if (twl->chip_type == chip_TWL6030) {
137 vbatch = TWL6030_GPADC_VBAT_CHNL;
138 } else {
139 ret = twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
140 TWL6032_GPSELECT_ISB,
141 TWL6032_GPADC_VBAT_CHNL);
142 if (ret)
143 return ret;
144 vbatch = 0;
145 }
Balaji T K3e664f62010-11-25 16:22:04 +0530146
147 /* Start GPADC SW conversion */
148 ret = twl6030_gpadc_sw2_trigger();
149 if (ret) {
150 printf("Failed to convert battery voltage\n");
151 return ret;
152 }
153
154 /* measure Vbat voltage */
Oleg Kosheliev340e6c82013-10-08 15:49:56 +0300155 battery_volt = twl6030_gpadc_read_channel(vbatch);
Balaji T K3e664f62010-11-25 16:22:04 +0530156 if (battery_volt < 0) {
157 printf("Failed to read battery voltage\n");
158 return ret;
159 }
Oleg Koshelievfc889502013-10-08 15:49:55 +0300160 battery_volt = (battery_volt * twl->vbat_mult) >> twl->vbat_shift;
Balaji T K3e664f62010-11-25 16:22:04 +0530161 printf("Battery Voltage: %d mV\n", battery_volt);
162
163 return battery_volt;
164}
165
Steve Sakoman516799f2010-07-15 12:53:42 -0700166void twl6030_init_battery_charging(void)
167{
Oleg Kosheliev340e6c82013-10-08 15:49:56 +0300168 u8 val = 0;
Balaji T K3e664f62010-11-25 16:22:04 +0530169 int battery_volt = 0;
170 int ret = 0;
171
Oleg Kosheliev340e6c82013-10-08 15:49:56 +0300172 ret = twl6030_i2c_read_u8(TWL6030_CHIP_USB, USB_PRODUCT_ID_LSB, &val);
173 if (ret) {
174 puts("twl6030_init_battery_charging(): could not determine chip!\n");
175 return;
176 }
177 if (val == 0x30) {
178 twl = &twl6030_info;
179 } else if (val == 0x32) {
180 twl = &twl6032_info;
181 } else {
182 puts("twl6030_init_battery_charging(): unsupported chip type\n");
183 return;
184 }
Oleg Koshelievfc889502013-10-08 15:49:55 +0300185
Balaji T K3e664f62010-11-25 16:22:04 +0530186 /* Enable VBAT measurement */
Oleg Kosheliev340e6c82013-10-08 15:49:56 +0300187 if (twl->chip_type == chip_TWL6030) {
188 twl6030_i2c_write_u8(TWL6030_CHIP_PM, MISC1, VBAT_MEAS);
189 twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
190 TWL6030_GPADC_CTRL,
191 GPADC_CTRL_SCALER_DIV4);
192 } else {
193 twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
194 TWL6032_GPADC_CTRL2,
195 GPADC_CTRL2_CH18_SCALER_EN);
196 }
Balaji T K3e664f62010-11-25 16:22:04 +0530197
198 /* Enable GPADC module */
Nishanth Menon345ef202013-03-26 05:20:51 +0000199 ret = twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, TOGGLE1, FGS | GPADCS);
Balaji T K3e664f62010-11-25 16:22:04 +0530200 if (ret) {
201 printf("Failed to enable GPADC\n");
202 return;
203 }
204
205 battery_volt = twl6030_get_battery_voltage();
206 if (battery_volt < 0)
207 return;
208
209 if (battery_volt < 3000)
210 printf("Main battery voltage too low!\n");
211
212 /* Check for the presence of USB charger */
Oleg Kosheliev340e6c82013-10-08 15:49:56 +0300213 twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, CONTROLLER_STAT1, &val);
Balaji T K3e664f62010-11-25 16:22:04 +0530214
215 /* check for battery presence indirectly via Fuel gauge */
Oleg Kosheliev340e6c82013-10-08 15:49:56 +0300216 if ((val & VBUS_DET) && (battery_volt < 3300))
Balaji T K3e664f62010-11-25 16:22:04 +0530217 twl6030_start_usb_charging();
218
Steve Sakoman516799f2010-07-15 12:53:42 -0700219 return;
220}
221
Paul Kocialkowskia85362f2016-02-27 19:18:51 +0100222void twl6030_power_mmc_init(int dev_index)
Balaji T K14fa2dd2011-09-08 06:34:57 +0000223{
Paul Kocialkowskid7b6a752016-02-27 19:18:50 +0100224 u8 value = 0;
225
Paul Kocialkowskia85362f2016-02-27 19:18:51 +0100226 if (dev_index == 0) {
227 /* 3.0V voltage output for VMMC */
228 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_VOLTAGE,
229 TWL6030_CFG_VOLTAGE_30);
Paul Kocialkowskic5dbae72016-02-27 19:18:49 +0100230
Paul Kocialkowskia85362f2016-02-27 19:18:51 +0100231 /* Enable P1 output for VMMC */
232 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_STATE,
233 TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
Paul Kocialkowskia85362f2016-02-27 19:18:51 +0100234 } else if (dev_index == 1) {
Nicolae Rosia28a3a432016-10-13 13:47:53 +0300235 twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_PH_STS_BOOT,
236 &value);
Paul Kocialkowskia85362f2016-02-27 19:18:51 +0100237 /* BOOT2 indicates 1.8V/2.8V VAUX1 for eMMC */
238 if (value & TWL6030_PH_STS_BOOT2) {
239 /* 1.8V voltage output for VAUX1 */
240 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
241 TWL6030_CFG_VOLTAGE_18);
242 } else {
243 /* 2.8V voltage output for VAUX1 */
244 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
245 TWL6030_CFG_VOLTAGE_28);
246 }
Paul Kocialkowskid7b6a752016-02-27 19:18:50 +0100247
Paul Kocialkowskia85362f2016-02-27 19:18:51 +0100248 /* Enable P1 output for VAUX */
249 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_STATE,
250 TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
Paul Kocialkowskid7b6a752016-02-27 19:18:50 +0100251 }
Balaji T K14fa2dd2011-09-08 06:34:57 +0000252}
253
Steve Sakoman516799f2010-07-15 12:53:42 -0700254void twl6030_usb_device_settings()
255{
Paul Kocialkowskic5dbae72016-02-27 19:18:49 +0100256 u8 value = 0;
Steve Sakoman516799f2010-07-15 12:53:42 -0700257
Paul Kocialkowski0343f712016-02-27 19:19:03 +0100258 /* 3.3V voltage output for VUSB */
259 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VUSB_CFG_VOLTAGE,
260 TWL6030_CFG_VOLTAGE_33);
261
Paul Kocialkowskic5dbae72016-02-27 19:18:49 +0100262 /* Enable P1 output for VUSB */
263 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VUSB_CFG_STATE,
264 TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
Steve Sakoman516799f2010-07-15 12:53:42 -0700265
Paul Kocialkowskic5dbae72016-02-27 19:18:49 +0100266 /* Select the input supply for VUSB regulator */
267 twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_MISC2, &value);
268 value |= TWL6030_MISC2_VUSB_IN_VSYS;
Paul Kocialkowski6313c652016-02-27 19:19:04 +0100269 value &= ~TWL6030_MISC2_VUSB_IN_PMID;
Paul Kocialkowskic5dbae72016-02-27 19:18:49 +0100270 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_MISC2, value);
Steve Sakoman516799f2010-07-15 12:53:42 -0700271}
Jean-Jacques Hiblotfb1b7712018-12-07 14:50:46 +0100272
273#ifdef CONFIG_DM_I2C
274int twl6030_i2c_write_u8(u8 chip_no, u8 reg, u8 val)
275{
276 struct udevice *dev;
277 int ret;
278
279 ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
280 if (ret) {
281 pr_err("unable to get I2C bus. ret %d\n", ret);
282 return ret;
283 }
284 ret = dm_i2c_reg_write(dev, reg, val);
285 if (ret) {
286 pr_err("writing to twl6030 failed. ret %d\n", ret);
287 return ret;
288 }
289 return 0;
290}
291
292int twl6030_i2c_read_u8(u8 chip_no, u8 reg, u8 *valp)
293{
294 struct udevice *dev;
295 int ret;
296
297 ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
298 if (ret) {
299 pr_err("unable to get I2C bus. ret %d\n", ret);
300 return ret;
301 }
302 ret = dm_i2c_reg_read(dev, reg);
303 if (ret < 0) {
304 pr_err("reading from twl6030 failed. ret %d\n", ret);
305 return ret;
306 }
307 *valp = (u8)ret;
308 return 0;
309}
310#endif