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,
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_stop_usb_charging(void)
76 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CONTROLLER_CTRL1, 0);
81 void twl6030_start_usb_charging(void)
83 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
84 CHARGERUSB_VICHRG, CHARGERUSB_VICHRG_1500);
85 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
86 CHARGERUSB_CINLIMIT, CHARGERUSB_CIN_LIMIT_NONE);
87 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
88 CONTROLLER_INT_MASK, MBAT_TEMP);
89 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
90 CHARGERUSB_INT_MASK, MASK_MCHARGERUSB_THMREG);
91 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
92 CHARGERUSB_VOREG, CHARGERUSB_VOREG_4P0);
93 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
94 CHARGERUSB_CTRL2, CHARGERUSB_CTRL2_VITERM_400);
95 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_CTRL1, TERM);
96 /* Enable USB charging */
97 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
98 CONTROLLER_CTRL1, CONTROLLER_CTRL1_EN_CHARGER);
102 int twl6030_get_battery_current(void)
104 int battery_current = 0;
108 twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, FG_REG_11, &msb);
109 twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, FG_REG_10, &lsb);
110 battery_current = ((msb << 8) | lsb);
112 /* convert 10 bit signed number to 16 bit signed number */
113 if (battery_current >= 0x2000)
114 battery_current = (battery_current - 0x4000);
116 battery_current = battery_current * 3000 / 4096;
117 printf("Battery Current: %d mA\n", battery_current);
119 return battery_current;
122 int twl6030_get_battery_voltage(void)
124 int battery_volt = 0;
128 if (twl->chip_type == chip_TWL6030) {
129 vbatch = TWL6030_GPADC_VBAT_CHNL;
131 ret = twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
132 TWL6032_GPSELECT_ISB,
133 TWL6032_GPADC_VBAT_CHNL);
139 /* Start GPADC SW conversion */
140 ret = twl6030_gpadc_sw2_trigger();
142 printf("Failed to convert battery voltage\n");
146 /* measure Vbat voltage */
147 battery_volt = twl6030_gpadc_read_channel(vbatch);
148 if (battery_volt < 0) {
149 printf("Failed to read battery voltage\n");
152 battery_volt = (battery_volt * twl->vbat_mult) >> twl->vbat_shift;
153 printf("Battery Voltage: %d mV\n", battery_volt);
158 void twl6030_init_battery_charging(void)
161 int battery_volt = 0;
164 ret = twl6030_i2c_read_u8(TWL6030_CHIP_USB, USB_PRODUCT_ID_LSB, &val);
166 puts("twl6030_init_battery_charging(): could not determine chip!\n");
171 } else if (val == 0x32) {
174 puts("twl6030_init_battery_charging(): unsupported chip type\n");
178 /* Enable VBAT measurement */
179 if (twl->chip_type == chip_TWL6030) {
180 twl6030_i2c_write_u8(TWL6030_CHIP_PM, MISC1, VBAT_MEAS);
181 twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
183 GPADC_CTRL_SCALER_DIV4);
185 twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
187 GPADC_CTRL2_CH18_SCALER_EN);
190 /* Enable GPADC module */
191 ret = twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, TOGGLE1, FGS | GPADCS);
193 printf("Failed to enable GPADC\n");
197 battery_volt = twl6030_get_battery_voltage();
198 if (battery_volt < 0)
201 if (battery_volt < 3000)
202 printf("Main battery voltage too low!\n");
204 /* Check for the presence of USB charger */
205 twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, CONTROLLER_STAT1, &val);
207 /* check for battery presence indirectly via Fuel gauge */
208 if ((val & VBUS_DET) && (battery_volt < 3300))
209 twl6030_start_usb_charging();
214 void twl6030_power_mmc_init(int dev_index)
218 if (dev_index == 0) {
219 /* 3.0V voltage output for VMMC */
220 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_VOLTAGE,
221 TWL6030_CFG_VOLTAGE_30);
223 /* Enable P1 output for VMMC */
224 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_STATE,
225 TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
227 twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_PH_STS_BOOT, &value);
228 } else if (dev_index == 1) {
229 /* BOOT2 indicates 1.8V/2.8V VAUX1 for eMMC */
230 if (value & TWL6030_PH_STS_BOOT2) {
231 /* 1.8V voltage output for VAUX1 */
232 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
233 TWL6030_CFG_VOLTAGE_18);
235 /* 2.8V voltage output for VAUX1 */
236 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
237 TWL6030_CFG_VOLTAGE_28);
240 /* Enable P1 output for VAUX */
241 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_STATE,
242 TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
246 void twl6030_usb_device_settings()
250 /* 3.3V voltage output for VUSB */
251 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VUSB_CFG_VOLTAGE,
252 TWL6030_CFG_VOLTAGE_33);
254 /* Enable P1 output for VUSB */
255 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VUSB_CFG_STATE,
256 TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
258 /* Select the input supply for VUSB regulator */
259 twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_MISC2, &value);
260 value |= TWL6030_MISC2_VUSB_IN_VSYS;
261 value &= ~TWL6030_MISC2_VUSB_IN_PMID;
262 twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_MISC2, value);