1 /* 2 * (C) Copyright 2010 3 * Texas Instruments, <www.ti.com> 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 #include <config.h> 24 #ifdef CONFIG_TWL6030_POWER 25 26 #include <twl6030.h> 27 28 /* Functions to read and write from TWL6030 */ 29 static inline int twl6030_i2c_write_u8(u8 chip_no, u8 val, u8 reg) 30 { 31 return i2c_write(chip_no, reg, 1, &val, 1); 32 } 33 34 static inline int twl6030_i2c_read_u8(u8 chip_no, u8 *val, u8 reg) 35 { 36 return i2c_read(chip_no, reg, 1, val, 1); 37 } 38 39 void twl6030_start_usb_charging(void) 40 { 41 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_VICHRG_1500, 42 CHARGERUSB_VICHRG); 43 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_CIN_LIMIT_NONE, 44 CHARGERUSB_CINLIMIT); 45 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, MBAT_TEMP, 46 CONTROLLER_INT_MASK); 47 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, MASK_MCHARGERUSB_THMREG, 48 CHARGERUSB_INT_MASK); 49 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_VOREG_4P0, 50 CHARGERUSB_VOREG); 51 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_CTRL2_VITERM_100, 52 CHARGERUSB_CTRL2); 53 /* Enable USB charging */ 54 twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CONTROLLER_CTRL1_EN_CHARGER, 55 CONTROLLER_CTRL1); 56 return; 57 } 58 59 void twl6030_init_battery_charging(void) 60 { 61 twl6030_start_usb_charging(); 62 return; 63 } 64 65 void twl6030_usb_device_settings() 66 { 67 u8 data = 0; 68 69 /* Select APP Group and set state to ON */ 70 twl6030_i2c_write_u8(TWL6030_CHIP_PM, 0x21, VUSB_CFG_STATE); 71 72 twl6030_i2c_read_u8(TWL6030_CHIP_PM, &data, MISC2); 73 data |= 0x10; 74 75 /* Select the input supply for VBUS regulator */ 76 twl6030_i2c_write_u8(TWL6030_CHIP_PM, data, MISC2); 77 } 78 #endif 79