Messages in this thread Patch in this message | | | From | NeilBrown <> | Date | Wed, 02 May 2012 06:44:50 +1000 | Subject | [PATCH 2/2] 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> ---
drivers/regulator/twl-regulator.c | 12 +++++------- include/linux/i2c/twl.h | 5 +++++ 2 files changed, 10 insertions(+), 7 deletions(-)
diff --git a/drivers/regulator/twl-regulator.c b/drivers/regulator/twl-regulator.c index 9cdfc38..03a316d 100644 --- a/drivers/regulator/twl-regulator.c +++ b/drivers/regulator/twl-regulator.c @@ -388,14 +388,12 @@ static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode) * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported. * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting. */ -#ifdef CONFIG_TWL4030_ALLOW_UNSUPPORTED -#define UNSUP_MASK 0x0000 -#else #define UNSUP_MASK 0x8000 -#endif #define UNSUP(x) (UNSUP_MASK | (x)) -#define IS_UNSUP(x) (UNSUP_MASK & (x)) +#define IS_UNSUP(info, x) \ + ((UNSUP_MASK & (x)) && \ + !((info)->features & TWL4030_ALLOW_UNSUPPORTED)) #define LDO_MV(x) (~UNSUP_MASK & (x)) @@ -469,7 +467,7 @@ static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index) struct twlreg_info *info = rdev_get_drvdata(rdev); int mV = info->table[index]; - return IS_UNSUP(mV) ? 0 : (LDO_MV(mV) * 1000); + return IS_UNSUP(info, mV) ? 0 : (LDO_MV(mV) * 1000); } static int @@ -483,7 +481,7 @@ twl4030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV, int mV = info->table[vsel]; int uV; - if (IS_UNSUP(mV)) + if (IS_UNSUP(info, mV)) continue; uV = LDO_MV(mV) * 1000; diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h index 88e8cd8..8eec440 100644 --- a/include/linux/i2c/twl.h +++ b/include/linux/i2c/twl.h @@ -752,6 +752,11 @@ 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. + */ /*----------------------------------------------------------------------*/
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