diff options
Diffstat (limited to 'drivers/power/twl4030.c')
| -rw-r--r-- | drivers/power/twl4030.c | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/drivers/power/twl4030.c b/drivers/power/twl4030.c index cf79161aaf3..b62ed176d25 100644 --- a/drivers/power/twl4030.c +++ b/drivers/power/twl4030.c @@ -86,7 +86,7 @@ void twl4030_power_init(void) twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VPLL2_DEDICATED, TWL4030_PM_RECEIVER_VPLL2_VSEL_18, TWL4030_PM_RECEIVER_VPLL2_DEV_GRP, - TWL4030_PM_RECEIVER_DEV_GRP_ALL); + TWL4030_PM_RECEIVER_DEV_GRP_P1); /* set VDAC to 1.8V */ twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VDAC_DEDICATED, @@ -133,6 +133,46 @@ U_BOOT_CMD(poweroff, 1, 1, do_poweroff, ); #ifdef CONFIG_TWL4030_CHARGING +/* Enable the battery backup charger */ +int twl4030_enable_bb_charging(unsigned int millivolts, unsigned int microamps) +{ + u8 val; + + if (millivolts >= 3200) + val = 0x0c; + else if (millivolts >= 3100) + val = 0x08; + else if (millivolts >= 3000) + val = 0x04; + else if (millivolts < 2500) { + val = 0; + goto write_it; + } + if (microamps >= 1000) + val |= 0x03; + else if (microamps >= 500) + val |= 0x02; + else if (microamps >= 150) + val |= 0x01; + else if (microamps < 25) { + val = 0; + goto write_it; + } + + val |= 0x10; /* set BBCHEN */ + + printf("Enable battery backup charger (BB_CFG = 0x%02x)\n", val); +write_it: + if (twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, val, + TWL4030_PM_RECEIVER_BB_CFG)) { + printf("Error:TWL4030: failed to write BB_CFG\n"); + return 1; + } + return 0; +} + + +/* Enable AC charging */ int twl4030_enable_charging(void) { u8 val = 0; |