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>
diff --git a/drivers/mfd/wm831x-irq.c b/drivers/mfd/wm831x-irq.c
index 2691648..90ad3fa 100644
--- a/drivers/mfd/wm831x-irq.c
+++ b/drivers/mfd/wm831x-irq.c
@@ -520,6 +520,14 @@
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