regulator: Add helpers for low-level register access

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Add helper functions that allow regulator consumers to obtain low-level
details about the regulator hardware, like the voltage selector register
address and such. These details can be useful when configuring hardware
or firmware that want to do low-level access to regulators, with no
involvement from the kernel.

The use-case for Tegra is a voltage-controlled oscillator clocksource
which has control logic to change the supply voltage via I2C to achieve
a desired output clock rate.

Signed-off-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

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Tuomas Tynkkynen 2014-07-21 18:38:48 +03:00 • committed by Mark Brown

parent 7171511eae

commit 04eca28cde

3 changed files with 132 additions and 0 deletions

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35

Documentation/power/regulator/consumer.txt

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71

drivers/regulator/core.c

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26

include/linux/regulator/consumer.h

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