1 // SPDX-License-Identifier: GPL-2.0+
4 * Texas Instruments, <www.ti.com>
10 static struct twl6030_data
*twl
;
12 static struct twl6030_data twl6030_info
= {
13 .chip_type
= chip_TWL6030
,
14 .adc_rbase
= GPCH0_LSB
,
16 .adc_enable
= CTRL_P2_SP2
,
17 .vbat_mult
= TWL6030_VBAT_MULT
,
18 .vbat_shift
= TWL6030_VBAT_SHIFT
,
21 static struct twl6030_data twl6032_info
= {
22 .chip_type
= chip_TWL6032
,
23 .adc_rbase
= TWL6032_GPCH0_LSB
,
24 .adc_ctrl
= TWL6032_CTRL_P1
,
25 .adc_enable
= CTRL_P1_SP1
,
26 .vbat_mult
= TWL6032_VBAT_MULT
,
27 .vbat_shift
= TWL6032_VBAT_SHIFT
,
31 static int twl6030_gpadc_read_channel(u8 channel_no
)
37 ret
= twl6030_i2c_read_u8(TWL6030_CHIP_ADC
,
38 twl
->adc_rbase
+ channel_no
* 2, &lsb
);
42 ret
= twl6030_i2c_read_u8(TWL6030_CHIP_ADC
,
43 twl
->adc_rbase
+ 1 + channel_no
* 2, &msb
);
47 return (msb
<< 8) | lsb
;
50 static int twl6030_gpadc_sw2_trigger(void)
55 ret
= twl6030_i2c_write_u8(TWL6030_CHIP_ADC
,
56 twl
->adc_ctrl
, twl
->adc_enable
);
60 /* Waiting until the SW1 conversion ends*/
63 while (!((val
& CTRL_P2_EOCP2
) && (!(val
& CTRL_P2_BUSY
)))) {
64 ret
= twl6030_i2c_read_u8(TWL6030_CHIP_ADC
,
74 void twl6030_power_off(void)
76 twl6030_i2c_write_u8(TWL6030_CHIP_PM
, TWL6030_PHOENIX_DEV_ON
,
77 TWL6030_PHOENIX_APP_DEVOFF
| TWL6030_PHOENIX_CON_DEVOFF
|
78 TWL6030_PHOENIX_MOD_DEVOFF
);
81 void twl6030_stop_usb_charging(void)
83 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER
, CONTROLLER_CTRL1
, 0);
88 void twl6030_start_usb_charging(void)
90 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER
,
91 CHARGERUSB_VICHRG
, CHARGERUSB_VICHRG_1500
);
92 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER
,
93 CHARGERUSB_CINLIMIT
, CHARGERUSB_CIN_LIMIT_NONE
);
94 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER
,
95 CONTROLLER_INT_MASK
, MBAT_TEMP
);
96 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER
,
97 CHARGERUSB_INT_MASK
, MASK_MCHARGERUSB_THMREG
);
98 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER
,
99 CHARGERUSB_VOREG
, CHARGERUSB_VOREG_4P0
);
100 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER
,
101 CHARGERUSB_CTRL2
, CHARGERUSB_CTRL2_VITERM_400
);
102 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER
, CHARGERUSB_CTRL1
, TERM
);
103 /* Enable USB charging */
104 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER
,
105 CONTROLLER_CTRL1
, CONTROLLER_CTRL1_EN_CHARGER
);
109 int twl6030_get_battery_current(void)
111 int battery_current
= 0;
115 twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER
, FG_REG_11
, &msb
);
116 twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER
, FG_REG_10
, &lsb
);
117 battery_current
= ((msb
<< 8) | lsb
);
119 /* convert 10 bit signed number to 16 bit signed number */
120 if (battery_current
>= 0x2000)
121 battery_current
= (battery_current
- 0x4000);
123 battery_current
= battery_current
* 3000 / 4096;
124 printf("Battery Current: %d mA\n", battery_current
);
126 return battery_current
;
129 int twl6030_get_battery_voltage(void)
131 int battery_volt
= 0;
135 if (twl
->chip_type
== chip_TWL6030
) {
136 vbatch
= TWL6030_GPADC_VBAT_CHNL
;
138 ret
= twl6030_i2c_write_u8(TWL6030_CHIP_ADC
,
139 TWL6032_GPSELECT_ISB
,
140 TWL6032_GPADC_VBAT_CHNL
);
146 /* Start GPADC SW conversion */
147 ret
= twl6030_gpadc_sw2_trigger();
149 printf("Failed to convert battery voltage\n");
153 /* measure Vbat voltage */
154 battery_volt
= twl6030_gpadc_read_channel(vbatch
);
155 if (battery_volt
< 0) {
156 printf("Failed to read battery voltage\n");
159 battery_volt
= (battery_volt
* twl
->vbat_mult
) >> twl
->vbat_shift
;
160 printf("Battery Voltage: %d mV\n", battery_volt
);
165 void twl6030_init_battery_charging(void)
168 int battery_volt
= 0;
171 ret
= twl6030_i2c_read_u8(TWL6030_CHIP_USB
, USB_PRODUCT_ID_LSB
, &val
);
173 puts("twl6030_init_battery_charging(): could not determine chip!\n");
178 } else if (val
== 0x32) {
181 puts("twl6030_init_battery_charging(): unsupported chip type\n");
185 /* Enable VBAT measurement */
186 if (twl
->chip_type
== chip_TWL6030
) {
187 twl6030_i2c_write_u8(TWL6030_CHIP_PM
, MISC1
, VBAT_MEAS
);
188 twl6030_i2c_write_u8(TWL6030_CHIP_ADC
,
190 GPADC_CTRL_SCALER_DIV4
);
192 twl6030_i2c_write_u8(TWL6030_CHIP_ADC
,
194 GPADC_CTRL2_CH18_SCALER_EN
);
197 /* Enable GPADC module */
198 ret
= twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER
, TOGGLE1
, FGS
| GPADCS
);
200 printf("Failed to enable GPADC\n");
204 battery_volt
= twl6030_get_battery_voltage();
205 if (battery_volt
< 0)
208 if (battery_volt
< 3000)
209 printf("Main battery voltage too low!\n");
211 /* Check for the presence of USB charger */
212 twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER
, CONTROLLER_STAT1
, &val
);
214 /* check for battery presence indirectly via Fuel gauge */
215 if ((val
& VBUS_DET
) && (battery_volt
< 3300))
216 twl6030_start_usb_charging();
221 void twl6030_power_mmc_init(int dev_index
)
225 if (dev_index
== 0) {
226 /* 3.0V voltage output for VMMC */
227 twl6030_i2c_write_u8(TWL6030_CHIP_PM
, TWL6030_VMMC_CFG_VOLTAGE
,
228 TWL6030_CFG_VOLTAGE_30
);
230 /* Enable P1 output for VMMC */
231 twl6030_i2c_write_u8(TWL6030_CHIP_PM
, TWL6030_VMMC_CFG_STATE
,
232 TWL6030_CFG_STATE_P1
| TWL6030_CFG_STATE_ON
);
233 } else if (dev_index
== 1) {
234 twl6030_i2c_read_u8(TWL6030_CHIP_PM
, TWL6030_PH_STS_BOOT
,
236 /* BOOT2 indicates 1.8V/2.8V VAUX1 for eMMC */
237 if (value
& TWL6030_PH_STS_BOOT2
) {
238 /* 1.8V voltage output for VAUX1 */
239 twl6030_i2c_write_u8(TWL6030_CHIP_PM
, TWL6030_VAUX1_CFG_VOLTAGE
,
240 TWL6030_CFG_VOLTAGE_18
);
242 /* 2.8V voltage output for VAUX1 */
243 twl6030_i2c_write_u8(TWL6030_CHIP_PM
, TWL6030_VAUX1_CFG_VOLTAGE
,
244 TWL6030_CFG_VOLTAGE_28
);
247 /* Enable P1 output for VAUX */
248 twl6030_i2c_write_u8(TWL6030_CHIP_PM
, TWL6030_VAUX1_CFG_STATE
,
249 TWL6030_CFG_STATE_P1
| TWL6030_CFG_STATE_ON
);
253 void twl6030_usb_device_settings()
257 /* 3.3V voltage output for VUSB */
258 twl6030_i2c_write_u8(TWL6030_CHIP_PM
, TWL6030_VUSB_CFG_VOLTAGE
,
259 TWL6030_CFG_VOLTAGE_33
);
261 /* Enable P1 output for VUSB */
262 twl6030_i2c_write_u8(TWL6030_CHIP_PM
, TWL6030_VUSB_CFG_STATE
,
263 TWL6030_CFG_STATE_P1
| TWL6030_CFG_STATE_ON
);
265 /* Select the input supply for VUSB regulator */
266 twl6030_i2c_read_u8(TWL6030_CHIP_PM
, TWL6030_MISC2
, &value
);
267 value
|= TWL6030_MISC2_VUSB_IN_VSYS
;
268 value
&= ~TWL6030_MISC2_VUSB_IN_PMID
;
269 twl6030_i2c_write_u8(TWL6030_CHIP_PM
, TWL6030_MISC2
, value
);
273 int twl6030_i2c_write_u8(u8 chip_no
, u8 reg
, u8 val
)
278 ret
= i2c_get_chip_for_busnum(0, chip_no
, 1, &dev
);
280 pr_err("unable to get I2C bus. ret %d\n", ret
);
283 ret
= dm_i2c_reg_write(dev
, reg
, val
);
285 pr_err("writing to twl6030 failed. ret %d\n", ret
);
291 int twl6030_i2c_read_u8(u8 chip_no
, u8 reg
, u8
*valp
)
296 ret
= i2c_get_chip_for_busnum(0, chip_no
, 1, &dev
);
298 pr_err("unable to get I2C bus. ret %d\n", ret
);
301 ret
= dm_i2c_reg_read(dev
, reg
);
303 pr_err("reading from twl6030 failed. ret %d\n", ret
);