diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-11-03 13:41:14 +0000 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-01-09 00:37:29 +0100 |
| commit | 289aabdaf943f3676a16908e2c3cc1a1f9877ccb (patch) | |
| tree | ff558b16fa7cca647f58c795b2b2b7ca7d65bdd5 | |
| parent | 73de16db43f8dcb833ab032ed274b60b23676680 (diff) | |
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>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| -rw-r--r-- | drivers/mfd/wm8994-core.c | 11 | ||||
| -rw-r--r-- | include/linux/mfd/wm8994/pdata.h | 6 |
2 files changed, 14 insertions, 3 deletions
diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c index ff373dcda2c7..776298b313ab 100644 --- a/drivers/mfd/wm8994-core.c +++ b/drivers/mfd/wm8994-core.c @@ -374,6 +374,7 @@ 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; 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 diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h index ea32f306dca6..54e2fef587d5 100644 --- a/include/linux/mfd/wm8994/pdata.h +++ b/include/linux/mfd/wm8994/pdata.h @@ -174,6 +174,12 @@ struct wm8994_pdata { * consumption will rise. */ bool ldo_ena_always_driven; + + /* + * SPKMODE must be pulled internally by the device on this + * system. + */ + bool spkmode_pu; }; #endif |