diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-11-03 13:20:38 +0000 |
|---|---|---|
| committer | Andreas Blaesius <skate4life@gmx.de> | 2016-04-30 11:04:00 +0200 |
| commit | 391441423a13b2c869da081c720bfce7435f18dc (patch) | |
| tree | 8cb238a5b48164940f15b04be6e6fc594936f12c /drivers/mfd | |
| parent | df1e6acfe072b32c19b2d883c4547e77bf6614b9 (diff) | |
| download | kernel_samsung_espresso10-391441423a13b2c869da081c720bfce7435f18dc.zip kernel_samsung_espresso10-391441423a13b2c869da081c720bfce7435f18dc.tar.gz kernel_samsung_espresso10-391441423a13b2c869da081c720bfce7435f18dc.tar.bz2 | |
mfd: Disable more pulls on WM8994
Disable more pulls by default on WM8994 for a small current saving. Since
some designs do leave SPKMODE floating provide platform data to allow that
to be left enabled.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/wm8994-core.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c index 4e83fa2..6b003e7 100644 --- a/drivers/mfd/wm8994-core.c +++ b/drivers/mfd/wm8994-core.c @@ -392,6 +392,7 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq) struct wm8994_pdata *pdata = wm8994->dev->platform_data; const char *devname; int ret, i; + int pulls = 0; mutex_init(&wm8994->io_lock); dev_set_drvdata(wm8994->dev, wm8994); @@ -516,12 +517,16 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq) } wm8994->ldo_ena_always_driven = pdata->ldo_ena_always_driven; + + if (pdata->spkmode_pu) + pulls |= WM8994_SPKMODE_PU; } - /* Disable LDO pulldowns while the device is active */ + /* Disable unneeded pulls */ wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, - WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD, - 0); + WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD | + WM8994_SPKMODE_PU | WM8994_CSNADDR_PD, + pulls); /* In some system designs where the regulators are not in use, * we can achieve a small reduction in leakage currents by |