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);