+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2010
* Texas Instruments, <www.ti.com>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
*/
#include <config.h>
-#ifdef CONFIG_TWL6030_POWER
#include <twl6030.h>
-/* Functions to read and write from TWL6030 */
-static inline int twl6030_i2c_write_u8(u8 chip_no, u8 val, u8 reg)
+static struct twl6030_data *twl;
+
+static struct twl6030_data twl6030_info = {
+ .chip_type = chip_TWL6030,
+ .adc_rbase = GPCH0_LSB,
+ .adc_ctrl = CTRL_P2,
+ .adc_enable = CTRL_P2_SP2,
+ .vbat_mult = TWL6030_VBAT_MULT,
+ .vbat_shift = TWL6030_VBAT_SHIFT,
+};
+
+static struct twl6030_data twl6032_info = {
+ .chip_type = chip_TWL6032,
+ .adc_rbase = TWL6032_GPCH0_LSB,
+ .adc_ctrl = TWL6032_CTRL_P1,
+ .adc_enable = CTRL_P1_SP1,
+ .vbat_mult = TWL6032_VBAT_MULT,
+ .vbat_shift = TWL6032_VBAT_SHIFT,
+};
+
+
+static int twl6030_gpadc_read_channel(u8 channel_no)
+{
+ u8 lsb = 0;
+ u8 msb = 0;
+ int ret = 0;
+
+ ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC,
+ twl->adc_rbase + channel_no * 2, &lsb);
+ if (ret)
+ return ret;
+
+ ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC,
+ twl->adc_rbase + 1 + channel_no * 2, &msb);
+ if (ret)
+ return ret;
+
+ return (msb << 8) | lsb;
+}
+
+static int twl6030_gpadc_sw2_trigger(void)
+{
+ u8 val;
+ int ret = 0;
+
+ ret = twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
+ twl->adc_ctrl, twl->adc_enable);
+ if (ret)
+ return ret;
+
+ /* Waiting until the SW1 conversion ends*/
+ val = CTRL_P2_BUSY;
+
+ while (!((val & CTRL_P2_EOCP2) && (!(val & CTRL_P2_BUSY)))) {
+ ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC,
+ twl->adc_ctrl, &val);
+ if (ret)
+ return ret;
+ udelay(1000);
+ }
+
+ return 0;
+}
+
+void twl6030_power_off(void)
{
- return i2c_write(chip_no, reg, 1, &val, 1);
+ twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_PHOENIX_DEV_ON,
+ TWL6030_PHOENIX_APP_DEVOFF | TWL6030_PHOENIX_CON_DEVOFF |
+ TWL6030_PHOENIX_MOD_DEVOFF);
}
-static inline int twl6030_i2c_read_u8(u8 chip_no, u8 *val, u8 reg)
+void twl6030_stop_usb_charging(void)
{
- return i2c_read(chip_no, reg, 1, val, 1);
+ twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CONTROLLER_CTRL1, 0);
+
+ return;
}
void twl6030_start_usb_charging(void)
{
- twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_VICHRG_1500,
- CHARGERUSB_VICHRG);
- twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_CIN_LIMIT_NONE,
- CHARGERUSB_CINLIMIT);
- twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, MBAT_TEMP,
- CONTROLLER_INT_MASK);
- twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, MASK_MCHARGERUSB_THMREG,
- CHARGERUSB_INT_MASK);
- twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_VOREG_4P0,
- CHARGERUSB_VOREG);
- twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_CTRL2_VITERM_100,
- CHARGERUSB_CTRL2);
+ twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
+ CHARGERUSB_VICHRG, CHARGERUSB_VICHRG_1500);
+ twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
+ CHARGERUSB_CINLIMIT, CHARGERUSB_CIN_LIMIT_NONE);
+ twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
+ CONTROLLER_INT_MASK, MBAT_TEMP);
+ twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
+ CHARGERUSB_INT_MASK, MASK_MCHARGERUSB_THMREG);
+ twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
+ CHARGERUSB_VOREG, CHARGERUSB_VOREG_4P0);
+ twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
+ CHARGERUSB_CTRL2, CHARGERUSB_CTRL2_VITERM_400);
+ twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_CTRL1, TERM);
/* Enable USB charging */
- twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CONTROLLER_CTRL1_EN_CHARGER,
- CONTROLLER_CTRL1);
+ twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
+ CONTROLLER_CTRL1, CONTROLLER_CTRL1_EN_CHARGER);
return;
}
+int twl6030_get_battery_current(void)
+{
+ int battery_current = 0;
+ u8 msb = 0;
+ u8 lsb = 0;
+
+ twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, FG_REG_11, &msb);
+ twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, FG_REG_10, &lsb);
+ battery_current = ((msb << 8) | lsb);
+
+ /* convert 10 bit signed number to 16 bit signed number */
+ if (battery_current >= 0x2000)
+ battery_current = (battery_current - 0x4000);
+
+ battery_current = battery_current * 3000 / 4096;
+ printf("Battery Current: %d mA\n", battery_current);
+
+ return battery_current;
+}
+
+int twl6030_get_battery_voltage(void)
+{
+ int battery_volt = 0;
+ int ret = 0;
+ u8 vbatch;
+
+ if (twl->chip_type == chip_TWL6030) {
+ vbatch = TWL6030_GPADC_VBAT_CHNL;
+ } else {
+ ret = twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
+ TWL6032_GPSELECT_ISB,
+ TWL6032_GPADC_VBAT_CHNL);
+ if (ret)
+ return ret;
+ vbatch = 0;
+ }
+
+ /* Start GPADC SW conversion */
+ ret = twl6030_gpadc_sw2_trigger();
+ if (ret) {
+ printf("Failed to convert battery voltage\n");
+ return ret;
+ }
+
+ /* measure Vbat voltage */
+ battery_volt = twl6030_gpadc_read_channel(vbatch);
+ if (battery_volt < 0) {
+ printf("Failed to read battery voltage\n");
+ return ret;
+ }
+ battery_volt = (battery_volt * twl->vbat_mult) >> twl->vbat_shift;
+ printf("Battery Voltage: %d mV\n", battery_volt);
+
+ return battery_volt;
+}
+
void twl6030_init_battery_charging(void)
{
- twl6030_start_usb_charging();
+ u8 val = 0;
+ int battery_volt = 0;
+ int ret = 0;
+
+ ret = twl6030_i2c_read_u8(TWL6030_CHIP_USB, USB_PRODUCT_ID_LSB, &val);
+ if (ret) {
+ puts("twl6030_init_battery_charging(): could not determine chip!\n");
+ return;
+ }
+ if (val == 0x30) {
+ twl = &twl6030_info;
+ } else if (val == 0x32) {
+ twl = &twl6032_info;
+ } else {
+ puts("twl6030_init_battery_charging(): unsupported chip type\n");
+ return;
+ }
+
+ /* Enable VBAT measurement */
+ if (twl->chip_type == chip_TWL6030) {
+ twl6030_i2c_write_u8(TWL6030_CHIP_PM, MISC1, VBAT_MEAS);
+ twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
+ TWL6030_GPADC_CTRL,
+ GPADC_CTRL_SCALER_DIV4);
+ } else {
+ twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
+ TWL6032_GPADC_CTRL2,
+ GPADC_CTRL2_CH18_SCALER_EN);
+ }
+
+ /* Enable GPADC module */
+ ret = twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, TOGGLE1, FGS | GPADCS);
+ if (ret) {
+ printf("Failed to enable GPADC\n");
+ return;
+ }
+
+ battery_volt = twl6030_get_battery_voltage();
+ if (battery_volt < 0)
+ return;
+
+ if (battery_volt < 3000)
+ printf("Main battery voltage too low!\n");
+
+ /* Check for the presence of USB charger */
+ twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, CONTROLLER_STAT1, &val);
+
+ /* check for battery presence indirectly via Fuel gauge */
+ if ((val & VBUS_DET) && (battery_volt < 3300))
+ twl6030_start_usb_charging();
+
return;
}
+void twl6030_power_mmc_init(int dev_index)
+{
+ u8 value = 0;
+
+ if (dev_index == 0) {
+ /* 3.0V voltage output for VMMC */
+ twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_VOLTAGE,
+ TWL6030_CFG_VOLTAGE_30);
+
+ /* Enable P1 output for VMMC */
+ twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_STATE,
+ TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
+ } else if (dev_index == 1) {
+ twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_PH_STS_BOOT,
+ &value);
+ /* BOOT2 indicates 1.8V/2.8V VAUX1 for eMMC */
+ if (value & TWL6030_PH_STS_BOOT2) {
+ /* 1.8V voltage output for VAUX1 */
+ twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
+ TWL6030_CFG_VOLTAGE_18);
+ } else {
+ /* 2.8V voltage output for VAUX1 */
+ twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
+ TWL6030_CFG_VOLTAGE_28);
+ }
+
+ /* Enable P1 output for VAUX */
+ twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_STATE,
+ TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
+ }
+}
+
void twl6030_usb_device_settings()
{
- u8 data = 0;
+ u8 value = 0;
+
+ /* 3.3V voltage output for VUSB */
+ twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VUSB_CFG_VOLTAGE,
+ TWL6030_CFG_VOLTAGE_33);
- /* Select APP Group and set state to ON */
- twl6030_i2c_write_u8(TWL6030_CHIP_PM, 0x21, VUSB_CFG_STATE);
+ /* Enable P1 output for VUSB */
+ twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VUSB_CFG_STATE,
+ TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
- twl6030_i2c_read_u8(TWL6030_CHIP_PM, &data, MISC2);
- data |= 0x10;
+ /* Select the input supply for VUSB regulator */
+ twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_MISC2, &value);
+ value |= TWL6030_MISC2_VUSB_IN_VSYS;
+ value &= ~TWL6030_MISC2_VUSB_IN_PMID;
+ twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_MISC2, value);
+}
+
+#ifdef CONFIG_DM_I2C
+int twl6030_i2c_write_u8(u8 chip_no, u8 reg, u8 val)
+{
+ struct udevice *dev;
+ int ret;
+
+ ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
+ if (ret) {
+ pr_err("unable to get I2C bus. ret %d\n", ret);
+ return ret;
+ }
+ ret = dm_i2c_reg_write(dev, reg, val);
+ if (ret) {
+ pr_err("writing to twl6030 failed. ret %d\n", ret);
+ return ret;
+ }
+ return 0;
+}
+
+int twl6030_i2c_read_u8(u8 chip_no, u8 reg, u8 *valp)
+{
+ struct udevice *dev;
+ int ret;
- /* Select the input supply for VBUS regulator */
- twl6030_i2c_write_u8(TWL6030_CHIP_PM, data, MISC2);
+ ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
+ if (ret) {
+ pr_err("unable to get I2C bus. ret %d\n", ret);
+ return ret;
+ }
+ ret = dm_i2c_reg_read(dev, reg);
+ if (ret < 0) {
+ pr_err("reading from twl6030 failed. ret %d\n", ret);
+ return ret;
+ }
+ *valp = (u8)ret;
+ return 0;
}
#endif
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