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| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-08-22 15:43:55 +0200 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2011-10-24 14:09:10 +0200 |
| commit | 881de67046f424fc3a6e05b1c681c12afd94e802 (patch) | |
| tree | 3f83b7d051532c785a598d442daa64267c2be210 /include/linux | |
| parent | 862de70c12bb6227943e155251c75e7fa4558068 (diff) | |
| download | linux-881de67046f424fc3a6e05b1c681c12afd94e802.tar.gz linux-881de67046f424fc3a6e05b1c681c12afd94e802.tar.bz2 linux-881de67046f424fc3a6e05b1c681c12afd94e802.zip | |
mfd: Allow WM8994 LDO enable pulls to be disabled
In systems where the LDO enables are always driven (for example, being
connected to an always on supply rail or a GPIO which is driven by the
CPU even in suspend) then we can disable the pull downs on the LDO for
a small power savings.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mfd/wm8994/core.h | 2 | ||||
| -rw-r--r-- | include/linux/mfd/wm8994/pdata.h | 7 |
2 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/mfd/wm8994/core.h b/include/linux/mfd/wm8994/core.h index f0b69cdae41c..5ab71bd76f9c 100644 --- a/include/linux/mfd/wm8994/core.h +++ b/include/linux/mfd/wm8994/core.h @@ -63,6 +63,8 @@ struct wm8994 { void *control_data; + bool ldo_ena_always_driven; + int gpio_base; int irq_base; diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h index 97cf4f27d647..ea32f306dca6 100644 --- a/include/linux/mfd/wm8994/pdata.h +++ b/include/linux/mfd/wm8994/pdata.h @@ -167,6 +167,13 @@ struct wm8994_pdata { /* WM8958 microphone bias configuration */ int micbias[2]; + + /* Disable the internal pull downs on the LDOs if they are + * always driven (eg, connected to an always on supply or + * GPIO that always drives an output. If they float power + * consumption will rise. + */ + bool ldo_ena_always_driven; }; #endif |