3 * Texas Instruments, <www.ti.com>
5 * SPDX-License-Identifier: GPL-2.0+
11 static struct twl6030_data
*twl
;
13 static struct twl6030_data twl6030_info
= {
14 .chip_type
= chip_TWL6030
,
15 .adc_rbase
= GPCH0_LSB
,
17 .adc_enable
= CTRL_P2_SP2
,
18 .vbat_mult
= TWL6030_VBAT_MULT
,
19 .vbat_shift
= TWL6030_VBAT_SHIFT
,
22 static 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
,
32 static int twl6030_gpadc_read_channel(u8 channel_no
)
38 ret
= twl6030_i2c_read_u8(TWL6030_CHIP_ADC
,
39 twl
->adc_rbase
+ channel_no
* 2, &lsb
);
43 ret
= twl6030_i2c_read_u8(TWL6030_CHIP_ADC
,
44 twl
->adc_rbase
+ 1 + channel_no
* 2, &msb
);
48 return (msb
<< 8) | lsb
;
51 static int twl6030_gpadc_sw2_trigger(void)
56 ret
= twl6030_i2c_write_u8(TWL6030_CHIP_ADC
,
57 twl
->adc_ctrl
, twl
->adc_enable
);
61 /* Waiting until the SW1 conversion ends*/
64 while (!((val
& CTRL_P2_EOCP2
) && (!(val
& CTRL_P2_BUSY
)))) {
65 ret
= twl6030_i2c_read_u8(TWL6030_CHIP_ADC
,
75 void twl6030_power_off(void)
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
);
82 void twl6030_stop_usb_charging(void)
84 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER
, CONTROLLER_CTRL1
, 0);
89 void twl6030_start_usb_charging(void)
91 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
);
104 /* Enable USB charging */
105 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER
,
106 CONTROLLER_CTRL1
, CONTROLLER_CTRL1_EN_CHARGER
);
110 int twl6030_get_battery_current(void)
112 int battery_current
= 0;
116 twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER
, FG_REG_11
, &msb
);
117 twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER
, FG_REG_10
, &lsb
);
118 battery_current
= ((msb
<< 8) | lsb
);
120 /* convert 10 bit signed number to 16 bit signed number */
121 if (battery_current
>= 0x2000)
122 battery_current
= (battery_current
- 0x4000);
124 battery_current
= battery_current
* 3000 / 4096;
125 printf("Battery Current: %d mA\n", battery_current
);
127 return battery_current
;
130 int twl6030_get_battery_voltage(void)
132 int battery_volt
= 0;
136 if (twl
->chip_type
== chip_TWL6030
) {
137 vbatch
= TWL6030_GPADC_VBAT_CHNL
;
139 ret
= twl6030_i2c_write_u8(TWL6030_CHIP_ADC
,
140 TWL6032_GPSELECT_ISB
,
141 TWL6032_GPADC_VBAT_CHNL
);
147 /* Start GPADC SW conversion */
148 ret
= twl6030_gpadc_sw2_trigger();
150 printf("Failed to convert battery voltage\n");
154 /* measure Vbat voltage */
155 battery_volt
= twl6030_gpadc_read_channel(vbatch
);
156 if (battery_volt
< 0) {
157 printf("Failed to read battery voltage\n");
160 battery_volt
= (battery_volt
* twl
->vbat_mult
) >> twl
->vbat_shift
;
161 printf("Battery Voltage: %d mV\n", battery_volt
);
166 void twl6030_init_battery_charging(void)
169 int battery_volt
= 0;
172 ret
= twl6030_i2c_read_u8(TWL6030_CHIP_USB
, USB_PRODUCT_ID_LSB
, &val
);
174 puts("twl6030_init_battery_charging(): could not determine chip!\n");
179 } else if (val
== 0x32) {
182 puts("twl6030_init_battery_charging(): unsupported chip type\n");
186 /* Enable VBAT measurement */
187 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
,
191 GPADC_CTRL_SCALER_DIV4
);
193 twl6030_i2c_write_u8(TWL6030_CHIP_ADC
,
195 GPADC_CTRL2_CH18_SCALER_EN
);
198 /* Enable GPADC module */
199 ret
= twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER
, TOGGLE1
, FGS
| GPADCS
);
201 printf("Failed to enable GPADC\n");
205 battery_volt
= twl6030_get_battery_voltage();
206 if (battery_volt
< 0)
209 if (battery_volt
< 3000)
210 printf("Main battery voltage too low!\n");
212 /* Check for the presence of USB charger */
213 twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER
, CONTROLLER_STAT1
, &val
);
215 /* check for battery presence indirectly via Fuel gauge */
216 if ((val
& VBUS_DET
) && (battery_volt
< 3300))
217 twl6030_start_usb_charging();
222 void twl6030_power_mmc_init(int dev_index
)
226 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
);
231 /* 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
);
234 } else if (dev_index
== 1) {
235 twl6030_i2c_read_u8(TWL6030_CHIP_PM
, TWL6030_PH_STS_BOOT
,
237 /* 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
);
243 /* 2.8V voltage output for VAUX1 */
244 twl6030_i2c_write_u8(TWL6030_CHIP_PM
, TWL6030_VAUX1_CFG_VOLTAGE
,
245 TWL6030_CFG_VOLTAGE_28
);
248 /* 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
);
254 void twl6030_usb_device_settings()
258 /* 3.3V voltage output for VUSB */
259 twl6030_i2c_write_u8(TWL6030_CHIP_PM
, TWL6030_VUSB_CFG_VOLTAGE
,
260 TWL6030_CFG_VOLTAGE_33
);
262 /* 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
);
266 /* 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
;
269 value
&= ~TWL6030_MISC2_VUSB_IN_PMID
;
270 twl6030_i2c_write_u8(TWL6030_CHIP_PM
, TWL6030_MISC2
, value
);