evie/android_kernel_oneplus_msm8998
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regulator: onsemi-ncp6335d: Add is_enabled API support

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Without is_enabled function support, regualtor framework treats
it as an always on regulator and does not invoke the regulator enable
function call. Hence, add support for it.

Also, define a parent supply ("vin") for the regulator. This parent
can be used to pin-control the regulator. While at it, change the initcall
level to subsys_init. so that the driver registers after the parent supply
("vin" - provided by fixed-regualtor).

Change-Id: I93e870d2e4b89f7874c3e17be91bc417dadf1777
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
This commit is contained in:
Kiran Gunda 2017-05-03 12:11:20 +05:30
parent 08e56dd325
commit 8f48ec6a5a
1 changed files with 17 additions and 1 deletions
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18
drivers/regulator/onsemi-ncp6335d.c
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@ -153,6 +153,20 @@ static void ncp633d_slew_delay(struct ncp6335d_info *dd,
udelay(delay);
}
static int ncp6335d_is_enabled(struct regulator_dev *rdev)
{
int rc, val = 0;
struct ncp6335d_info *dd = rdev_get_drvdata(rdev);
rc = ncp6335x_read(dd, dd->vsel_reg, &val);
if (rc)
dev_err(dd->dev, "Unable to read enable register rc(%d)", rc);
dump_registers(dd, dd->vsel_reg, __func__);
return ((val & NCP6335D_ENABLE) ? 1 : 0);
}
static int ncp6335d_enable(struct regulator_dev *rdev)
{
int rc;
@ -297,6 +311,7 @@ static struct regulator_ops ncp6335d_ops = {
.set_voltage = ncp6335d_set_voltage,
.get_voltage = ncp6335d_get_voltage,
.list_voltage = ncp6335d_list_voltage,
.is_enabled = ncp6335d_is_enabled,
.enable = ncp6335d_enable,
.disable = ncp6335d_disable,
.set_mode = ncp6335d_set_mode,
@ -305,6 +320,7 @@ static struct regulator_ops ncp6335d_ops = {
static struct regulator_desc rdesc = {
.name = "ncp6335d",
.supply_name = "vin",
.owner = THIS_MODULE,
.n_voltages = NCP6335D_VOLTAGE_STEPS,
.ops = &ncp6335d_ops,
@ -748,7 +764,7 @@ int __init ncp6335d_regulator_init(void)
return i2c_add_driver(&ncp6335d_regulator_driver);
}
EXPORT_SYMBOL(ncp6335d_regulator_init);
arch_initcall(ncp6335d_regulator_init);
subsys_initcall(ncp6335d_regulator_init);
static void __exit ncp6335d_regulator_exit(void)
{