diff options
Diffstat (limited to 'drivers/power/twl4030.c')
| -rw-r--r-- | drivers/power/twl4030.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/power/twl4030.c b/drivers/power/twl4030.c index 7f1fdd1..8866bf1 100644 --- a/drivers/power/twl4030.c +++ b/drivers/power/twl4030.c @@ -46,6 +46,66 @@ void twl4030_power_reset_init(void) } /* + * Power off + */ +void twl4030_power_off(void) +{ + u8 data; + + /* PM master unlock (CFG and TST keys) */ + + data = 0xCE; + twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, + TWL4030_PM_MASTER_PROTECT_KEY, data); + data = 0xEC; + twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, + TWL4030_PM_MASTER_PROTECT_KEY, data); + + /* VBAT start disable */ + + twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, + TWL4030_PM_MASTER_CFG_P1_TRANSITION, &data); + data &= ~TWL4030_PM_MASTER_CFG_TRANSITION_STARTON_VBAT; + twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, + TWL4030_PM_MASTER_CFG_P1_TRANSITION, data); + + twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, + TWL4030_PM_MASTER_CFG_P2_TRANSITION, &data); + data &= ~TWL4030_PM_MASTER_CFG_TRANSITION_STARTON_VBAT; + twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, + TWL4030_PM_MASTER_CFG_P2_TRANSITION, data); + + twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, + TWL4030_PM_MASTER_CFG_P3_TRANSITION, &data); + data &= ~TWL4030_PM_MASTER_CFG_TRANSITION_STARTON_VBAT; + twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, + TWL4030_PM_MASTER_CFG_P3_TRANSITION, data); + + /* High jitter for PWRANA2 */ + + twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, + TWL4030_PM_MASTER_CFG_PWRANA2, &data); + data &= ~(TWL4030_PM_MASTER_CFG_PWRANA2_LOJIT0_LOWV | + TWL4030_PM_MASTER_CFG_PWRANA2_LOJIT1_LOWV); + twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, + TWL4030_PM_MASTER_CFG_PWRANA2, data); + + /* PM master lock */ + + data = 0xFF; + twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, + TWL4030_PM_MASTER_PROTECT_KEY, data); + + /* Power off */ + + twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, + TWL4030_PM_MASTER_P1_SW_EVENTS, &data); + data |= TWL4030_PM_MASTER_SW_EVENTS_DEVOFF; + twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, + TWL4030_PM_MASTER_P1_SW_EVENTS, data); +} + +/* * Set Device Group and Voltage */ void twl4030_pmrecv_vsel_cfg(u8 vsel_reg, u8 vsel_val, |