regulator: core: Allow specific minimal selector for starting linear mapping

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Some drivers (at least 3 drivers) have such variant of linear mapping that
the first few selectors are invalid and the reset are linear mapping.
Let's support this case in core.

This patch adds linear_min_sel in struct regulator_desc,
so we can allow specific minimal selector for starting linear mapping.
Then extends regulator_[map|list]_voltage_linear() to support this feature.

Note that for selectors less than min_linear_index, we need count them to
n_voltages so regulator_list_voltage() won't fail while checking the boundary
for selector before calling list_voltage callback.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

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This commit is contained in:

Axel Lin 2012-11-27 10:24:33 +08:00 • committed by Mark Brown

parent 9489e9dcae

commit 33234e791d

2 changed files with 8 additions and 0 deletions

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6

drivers/regulator/core.c

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2

include/linux/regulator/driver.h

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