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| author |   Yadwinder Singh Brar <yadi.brar@samsung.com> | 2013-06-29 18:21:15 +0530 |
|---|---|---|
| committer |   Mark Brown <broonie@linaro.org> | 2013-07-15 11:27:48 +0100 |
| commit | 1653ccf4c52df6a4abe8ec2f33f2cb2896d129ea (patch) | |
| tree | 2238091c98473856a1523b13974ad98815a63156 /drivers/regulator/of_regulator.c | |
| parent | Linux 3.11-rc1 (diff) | |
| download | linux-dev-1653ccf4c52df6a4abe8ec2f33f2cb2896d129ea.tar.xz linux-dev-1653ccf4c52df6a4abe8ec2f33f2cb2896d129ea.zip | |
regulator: core: Add support for disabling ramp delay
Some hardwares support disabling ramp delay, so adding ramp_disable flag to
constraints. It will be used to figure out whether ramp_delay in constraints
is explicitly set to zero or its unintialized (zero by default).
And we don't need to call set_voltage_time_sel() for regulators for whom ramp
delay is disabled in constraints.
Signed-off-by: Yadwinder Singh Brar <yadi.brar@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/regulator/of_regulator.c')
| -rw-r--r-- | drivers/regulator/of_regulator.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c index f3c8f8f9dc39..7827384680d6 100644 --- a/drivers/regulator/of_regulator.c +++ b/drivers/regulator/of_regulator.c @@ -21,6 +21,7 @@ static void of_get_regulation_constraints(struct device_node *np, { const __be32 *min_uV, *max_uV, *uV_offset; const __be32 *min_uA, *max_uA, *ramp_delay; + struct property *prop; struct regulation_constraints *constraints = &(*init_data)->constraints; constraints->name = of_get_property(np, "regulator-name", NULL); @@ -64,9 +65,14 @@ static void of_get_regulation_constraints(struct device_node *np, if (of_property_read_bool(np, "regulator-allow-bypass")) constraints->valid_ops_mask |= REGULATOR_CHANGE_BYPASS; - ramp_delay = of_get_property(np, "regulator-ramp-delay", NULL); - if (ramp_delay) - constraints->ramp_delay = be32_to_cpu(*ramp_delay); + prop = of_find_property(np, "regulator-ramp-delay", NULL); + if (prop && prop->value) { + ramp_delay = prop->value; + if (*ramp_delay) + constraints->ramp_delay = be32_to_cpu(*ramp_delay); + else + constraints->ramp_disable = true; + } } /** |