diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/regulator/ab8500-regulator.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/regulator/ab8500-regulator.c b/drivers/regulator/ab8500-regulator.c index e0efa87404a..320a85d6350 100644 --- a/drivers/regulator/ab8500-regulator.c +++ b/drivers/regulator/ab8500-regulator.c @@ -649,11 +649,32 @@ static int ab8500_dcdc_disable(struct regulator_dev *rdev) return 0; } +static int ab8500_dcdc_is_enabled(struct regulator_dev *rdev) +{ + int regulator_id, ret; + + regulator_id = rdev_get_id(rdev); + if (regulator_id >= AB8500_NUM_REGULATORS) + return -EINVAL; + + switch (regulator_id) { + case AB8500_DCDC_VBUS: + ret = ab8500_read(AB8500_REGU_CTRL1, AB8500_REGU_VUSB_CTRL_REG); + if (ret & MASK_ENABLE) + return true; + else + return false; + default: + dev_dbg(rdev_get_dev(rdev), "unknown regulator id\n"); + return -EINVAL; + } +} /* operations for DC-DC convertor supplies (VBUS, VSMPS1/2) */ static struct regulator_ops ab8500_dcdc_ops = { .enable = ab8500_dcdc_enable, .disable = ab8500_dcdc_disable, + .is_enabled = ab8500_dcdc_is_enabled, }; static struct regulator_desc ab8500_desc[AB8500_NUM_REGULATORS] = { |