diff options
| author | Haojian Zhuang <haojian.zhuang@marvell.com> | 2011-04-18 22:04:09 +0800 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2011-05-26 19:45:33 +0200 |
| commit | db13c04002e0d896f89657f9b2837a8ecfbb19b6 (patch) | |
| tree | ca0e8f702d7485c49fee8e8a843be78789505f09 /drivers/regulator | |
| parent | 2402ca5e300db0d88fce9e0b3a5218863c71b694 (diff) | |
| download | talos-obmc-linux-db13c04002e0d896f89657f9b2837a8ecfbb19b6.tar.gz talos-obmc-linux-db13c04002e0d896f89657f9b2837a8ecfbb19b6.zip | |
regulator: Enable max8925 i2c sequence for control
Force to enable i2c as power up/down sequence. Otherwise, SD/LDO can't
be enabled or disabled via accessing i2c bus.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Cc: Liam Girdwood <lrg@slimlogic.co.uk>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/max8925-regulator.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/regulator/max8925-regulator.c b/drivers/regulator/max8925-regulator.c index 8ae147549c6a..e4dbd667c043 100644 --- a/drivers/regulator/max8925-regulator.c +++ b/drivers/regulator/max8925-regulator.c @@ -23,6 +23,10 @@ #define SD1_DVM_SHIFT 5 /* SDCTL1 bit5 */ #define SD1_DVM_EN 6 /* SDV1 bit 6 */ +/* bit definitions in SD & LDO control registers */ +#define OUT_ENABLE 0x1f /* Power U/D sequence as I2C */ +#define OUT_DISABLE 0x1e /* Power U/D sequence as I2C */ + struct max8925_regulator_info { struct regulator_desc desc; struct regulator_dev *regulator; @@ -93,8 +97,8 @@ static int max8925_enable(struct regulator_dev *rdev) struct max8925_regulator_info *info = rdev_get_drvdata(rdev); return max8925_set_bits(info->i2c, info->enable_reg, - 1 << info->enable_bit, - 1 << info->enable_bit); + OUT_ENABLE << info->enable_bit, + OUT_ENABLE << info->enable_bit); } static int max8925_disable(struct regulator_dev *rdev) @@ -102,7 +106,8 @@ static int max8925_disable(struct regulator_dev *rdev) struct max8925_regulator_info *info = rdev_get_drvdata(rdev); return max8925_set_bits(info->i2c, info->enable_reg, - 1 << info->enable_bit, 0); + OUT_ENABLE << info->enable_bit, + OUT_DISABLE << info->enable_bit); } static int max8925_is_enabled(struct regulator_dev *rdev) |
