mfd: Ensure all WM8350 IRQs are masked at startup

The IRQs might have been left enabled in hardware, generating spurious
IRQs before the drivers have registered.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/mfd/wm8350-core.c b/drivers/mfd/wm8350-core.c
index ea3801833176..84d5ea1ec171 100644
--- a/drivers/mfd/wm8350-core.c
+++ b/drivers/mfd/wm8350-core.c
@@ -1419,6 +1419,13 @@ int wm8350_device_init(struct wm8350 *wm8350, int irq,
                 return ret;
         }
 
+        wm8350_reg_write(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK, 0xFFFF);
+        wm8350_reg_write(wm8350, WM8350_INT_STATUS_1_MASK, 0xFFFF);
+        wm8350_reg_write(wm8350, WM8350_INT_STATUS_2_MASK, 0xFFFF);
+        wm8350_reg_write(wm8350, WM8350_UNDER_VOLTAGE_INT_STATUS_MASK, 0xFFFF);
+        wm8350_reg_write(wm8350, WM8350_GPIO_INT_STATUS_MASK, 0xFFFF);
+        wm8350_reg_write(wm8350, WM8350_COMPARATOR_INT_STATUS_MASK, 0xFFFF);
+
         mutex_init(&wm8350->auxadc_mutex);
         mutex_init(&wm8350->irq_mutex);
         INIT_WORK(&wm8350->irq_work, wm8350_irq_worker);