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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-01-21 13:26:46 +0000
committerSamuel Ortiz <sameo@linux.intel.com>2011-03-23 10:41:44 +0100
commitb103e0b3c52e6edb4839ccc961cf335ca6b88918 (patch)
tree92b516f01a0fa9dcc0acb8a5635cfbc0af55b5bd /drivers/mfd/wm831x-irq.c
parent939941d44dcaa138241d2182bd9e10f2b5d52665 (diff)
downloadlinux-b103e0b3c52e6edb4839ccc961cf335ca6b88918.tar.bz2
mfd: Support configuration of WM831x /IRQ output in CMOS mode
Provide platform data allowing the system to set the /IRQ pin into CMOS mode rather than the default open drain. The default value of this platform data reflects the default hardware configuration so there should be no change to existing users. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/wm831x-irq.c')
-rw-r--r--drivers/mfd/wm831x-irq.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mfd/wm831x-irq.c b/drivers/mfd/wm831x-irq.c
index 2691648e607e..90ad3fa91329 100644
--- a/drivers/mfd/wm831x-irq.c
+++ b/drivers/mfd/wm831x-irq.c
@@ -520,6 +520,14 @@ int wm831x_irq_init(struct wm831x *wm831x, int irq)
return 0;
}
+ if (pdata->irq_cmos)
+ i = 0;
+ else
+ i = WM831X_IRQ_OD;
+
+ wm831x_set_bits(wm831x, WM831X_IRQ_CONFIG,
+ WM831X_IRQ_OD, i);
+
/* Try to flag /IRQ as a wake source; there are a number of
* unconditional wake sources in the PMIC so this isn't
* conditional but we don't actually care *too* much if it