mfd: wm8994: Emulate level triggered interrupts if required
The interrupt controller on the wm8994 series of devices requires a level
triggered parent. If one is not available but a GPIO is available for the
interrupt then emulate.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/include/linux/mfd/wm8994/core.h b/include/linux/mfd/wm8994/core.h
index ae5c249..40854ac 100644
--- a/include/linux/mfd/wm8994/core.h
+++ b/include/linux/mfd/wm8994/core.h
@@ -29,6 +29,7 @@
struct regulator_dev;
struct regulator_bulk_data;
+struct irq_domain;
#define WM8994_NUM_GPIO_REGS 11
#define WM8994_NUM_LDO_REGS 2
@@ -73,6 +74,7 @@
int irq;
struct regmap_irq_chip_data *irq_data;
+ struct irq_domain *edge_irq;
/* Used over suspend/resume */
bool suspended;
diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h
index 68e7765..90e9bf8 100644
--- a/include/linux/mfd/wm8994/pdata.h
+++ b/include/linux/mfd/wm8994/pdata.h
@@ -223,6 +223,11 @@
* lines is mastered.
*/
int max_channels_clocked[WM8994_NUM_AIF];
+
+ /**
+ * GPIO for the IRQ pin if host only supports edge triggering
+ */
+ int irq_gpio;
};
#endif