diff options
| -rw-r--r-- | drivers/mfd/wm831x-irq.c | 24 | ||||
| -rw-r--r-- | include/linux/mfd/wm831x/core.h | 3 |
2 files changed, 21 insertions, 6 deletions
diff --git a/drivers/mfd/wm831x-irq.c b/drivers/mfd/wm831x-irq.c index ecc9d6d62fad..804e56ec99eb 100644 --- a/drivers/mfd/wm831x-irq.c +++ b/drivers/mfd/wm831x-irq.c @@ -413,22 +413,25 @@ static int wm831x_irq_set_type(struct irq_data *data, unsigned int type) * do the update here as we can be called with the bus lock * held. */ + wm831x->gpio_level_low[irq] = false; + wm831x->gpio_level_high[irq] = false; switch (type) { case IRQ_TYPE_EDGE_BOTH: wm831x->gpio_update[irq] = 0x10000 | WM831X_GPN_INT_MODE; - wm831x->gpio_level[irq] = false; break; case IRQ_TYPE_EDGE_RISING: wm831x->gpio_update[irq] = 0x10000 | WM831X_GPN_POL; - wm831x->gpio_level[irq] = false; break; case IRQ_TYPE_EDGE_FALLING: wm831x->gpio_update[irq] = 0x10000; - wm831x->gpio_level[irq] = false; break; case IRQ_TYPE_LEVEL_HIGH: wm831x->gpio_update[irq] = 0x10000 | WM831X_GPN_POL; - wm831x->gpio_level[irq] = true; + wm831x->gpio_level_high[irq] = true; + break; + case IRQ_TYPE_LEVEL_LOW: + wm831x->gpio_update[irq] = 0x10000; + wm831x->gpio_level_low[irq] = true; break; default: return -EINVAL; @@ -517,7 +520,7 @@ static irqreturn_t wm831x_irq_thread(int irq, void *data) * status. This is sucky but improves interoperability. */ if (primary == WM831X_GP_INT && - wm831x->gpio_level[i - WM831X_IRQ_GPIO_1]) { + wm831x->gpio_level_high[i - WM831X_IRQ_GPIO_1]) { ret = wm831x_reg_read(wm831x, WM831X_GPIO_LEVEL); while (ret & 1 << (i - WM831X_IRQ_GPIO_1)) { handle_nested_irq(irq_find_mapping(wm831x->irq_domain, @@ -526,6 +529,17 @@ static irqreturn_t wm831x_irq_thread(int irq, void *data) WM831X_GPIO_LEVEL); } } + + if (primary == WM831X_GP_INT && + wm831x->gpio_level_low[i - WM831X_IRQ_GPIO_1]) { + ret = wm831x_reg_read(wm831x, WM831X_GPIO_LEVEL); + while (!(ret & 1 << (i - WM831X_IRQ_GPIO_1))) { + handle_nested_irq(irq_find_mapping(wm831x->irq_domain, + i)); + ret = wm831x_reg_read(wm831x, + WM831X_GPIO_LEVEL); + } + } } out: diff --git a/include/linux/mfd/wm831x/core.h b/include/linux/mfd/wm831x/core.h index 736191cc7e00..4a3b83a77614 100644 --- a/include/linux/mfd/wm831x/core.h +++ b/include/linux/mfd/wm831x/core.h @@ -384,7 +384,8 @@ struct wm831x { /* Used by the interrupt controller code to post writes */ int gpio_update[WM831X_NUM_GPIO_REGS]; - bool gpio_level[WM831X_NUM_GPIO_REGS]; + bool gpio_level_high[WM831X_NUM_GPIO_REGS]; + bool gpio_level_low[WM831X_NUM_GPIO_REGS]; struct mutex auxadc_lock; struct list_head auxadc_pending; |