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regulator: twl-regulator: make TWL4030_ALLOW_UNSUPPORTED more configurable.

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The regulators in the twl4030 can provide some voltage settings
that are not offically supported.
These settings are disabled by default, but can be enabled with
  CONFIG_TWL4030_ALLOW_UNSUPPORTED=y
However
 - that config variable is not mentioned in any Kconfig so cannot
   be used, and
 - a global setting is clumsy - a per regulator setting would be
   better.

So define a new 'feature' flag that a board file can set to enable
these unsupported volatages for boards which need them.

This flag cannot (yet) be set using device-tree.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
NeilBrown
2012-05-09 05:44:00 +10:00
committed by Mark Brown
parent c30540d78e
commit 411a2df509
2 changed files with 9 additions and 6 deletions
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5
include/linux/i2c/twl.h
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@@ -762,6 +762,11 @@ struct twl_regulator_driver_data {
#define TWL5031 BIT(2) /* twl5031 has different registers */
#define TWL6030_CLASS BIT(3) /* TWL6030 class */
#define TWL6025_SUBCLASS BIT(4) /* TWL6025 has changed registers */
#define TWL4030_ALLOW_UNSUPPORTED BIT(5) /* Some voltages are possible
* but not officially supported.
* This flag is necessary to
* enable them.
*/
/*----------------------------------------------------------------------*/