mfd: Ensure all WM8350 IRQs are masked at startup
Mark Brown [Fri, 6 Feb 2009 14:28:15 +0000 (15:28 +0100)]
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>

drivers/mfd/wm8350-core.c

index ea38018..84d5ea1 100644 (file)
@@ -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);