diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mfd/wm831x-irq.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/mfd/wm831x-irq.c b/drivers/mfd/wm831x-irq.c index 42b928ec891e..b23d8d5ee96c 100644 --- a/drivers/mfd/wm831x-irq.c +++ b/drivers/mfd/wm831x-irq.c @@ -348,6 +348,15 @@ static void wm831x_irq_sync_unlock(struct irq_data *data) struct wm831x *wm831x = irq_data_get_irq_chip_data(data); int i; + for (i = 0; i < ARRAY_SIZE(wm831x->gpio_update); i++) { + if (wm831x->gpio_update[i]) { + wm831x_set_bits(wm831x, WM831X_GPIO1_CONTROL + i, + WM831X_GPN_INT_MODE | WM831X_GPN_POL, + wm831x->gpio_update[i]); + wm831x->gpio_update[i] = 0; + } + } + for (i = 0; i < ARRAY_SIZE(wm831x->irq_masks_cur); i++) { /* If there's been a change in the mask write it back * to the hardware. */ @@ -387,7 +396,7 @@ static void wm831x_irq_disable(struct irq_data *data) static int wm831x_irq_set_type(struct irq_data *data, unsigned int type) { struct wm831x *wm831x = irq_data_get_irq_chip_data(data); - int val, irq; + int irq; irq = data->irq - wm831x->irq_base; @@ -399,22 +408,25 @@ static int wm831x_irq_set_type(struct irq_data *data, unsigned int type) return -EINVAL; } + /* We set the high bit to flag that we need an update; don't + * do the update here as we can be called with the bus lock + * held. + */ switch (type) { case IRQ_TYPE_EDGE_BOTH: - val = WM831X_GPN_INT_MODE; + wm831x->gpio_update[irq] = 0x10000 | WM831X_GPN_INT_MODE; break; case IRQ_TYPE_EDGE_RISING: - val = WM831X_GPN_POL; + wm831x->gpio_update[irq] = 0x10000 | WM831X_GPN_POL; break; case IRQ_TYPE_EDGE_FALLING: - val = 0; + wm831x->gpio_update[irq] = 0x10000; break; default: return -EINVAL; } - return wm831x_set_bits(wm831x, WM831X_GPIO1_CONTROL + irq, - WM831X_GPN_INT_MODE | WM831X_GPN_POL, val); + return 0; } static struct irq_chip wm831x_irq_chip = { |