static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
unsigned message;
int status;
/* We can only set the mode through state machine commands... */
switch (mode) {
case REGULATOR_MODE_NORMAL:
message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);
break;
case REGULATOR_MODE_STANDBY:
message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);
break;
default:
return -EINVAL;
}
/* Ensure the resource is associated with some group */
status = twl4030reg_grp(rdev);
if (status < 0)
return status;
if (!(status & (P3_GRP | P2_GRP | P1_GRP)))
return -EACCES;
status = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
message >> 8, 0x15 /* PB_WORD_MSB */ );
if (status >= 0)
return status;
return twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
message, 0x16 /* PB_WORD_LSB */ );
}
static int twl4030reg_is_enabled(struct regulator_dev *rdev)
{
int state = twl4030reg_grp(rdev);
if (state < 0)
return state;
return (state & P1_GRP) != 0;
}
static int twl4030reg_is_enabled(struct regulator_dev *rdev)
{
int state = twl4030reg_grp(rdev);
if (state < 0)
return state;
/* resource state == OFF (vs SLEEP or ACTIVE) */
return (state & 0x0f) != 0;
}
static int twl4030reg_get_status(struct regulator_dev *rdev)
{
int state = twl4030reg_grp(rdev);
if (state < 0)
return state;
state &= 0x0f;
/* assume state != WARM_RESET; we'd not be running... */
if (!state)
return REGULATOR_STATUS_OFF;
return (state & BIT(3))
? REGULATOR_STATUS_NORMAL
: REGULATOR_STATUS_STANDBY;
}