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| author | Axel Lin <axel.lin@ingics.com> | 2012-11-27 10:24:33 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-11-27 20:07:40 +0000 |
| commit | 33234e791de2ac3ea915158e042907748191cabd (patch) | |
| tree | d1e0da62abf0a744526457e434b23456e8ea4be5 /include | |
| parent | 9489e9dcae718d5fde988e4a684a0f55b5f94d17 (diff) | |
| download | linux-33234e791de2ac3ea915158e042907748191cabd.tar.gz linux-33234e791de2ac3ea915158e042907748191cabd.tar.bz2 linux-33234e791de2ac3ea915158e042907748191cabd.zip | |
regulator: core: Allow specific minimal selector for starting linear mapping
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/regulator/driver.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 7932a3bf21bd..d9ce98a5028b 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -185,6 +185,7 @@ enum regulator_type { * * @min_uV: Voltage given by the lowest selector (if linear mapping) * @uV_step: Voltage increase with each selector (if linear mapping) + * @linear_min_sel: Minimal selector for starting linear mapping * @ramp_delay: Time to settle down after voltage change (unit: uV/us) * @volt_table: Voltage mapping table (if table based mapping) * @@ -207,6 +208,7 @@ struct regulator_desc { unsigned int min_uV; unsigned int uV_step; + unsigned int linear_min_sel; unsigned int ramp_delay; const unsigned int *volt_table; |