Merge branch 'master' of git://git.denx.de/u-boot-ti
[platform/kernel/u-boot.git] / drivers / power / twl6030.c
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