gpio-ml-ioh: Add the irq_disable/irq_enable hooks for ml-ioh irq chip

These hooks will be needed by the general disabl/enable_irq();

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

1 files changed, 30 insertions, 0 deletions

diff --git a/drivers/gpio/gpio-ml-ioh.c b/drivers/gpio/gpio-ml-ioh.c
index 92b6f51a206e..461958fc2264 100644
--- a/drivers/gpio/gpio-ml-ioh.c
+++ b/drivers/gpio/gpio-ml-ioh.c
@@ -332,6 +332,34 @@ static void ioh_irq_mask(struct irq_data *d)
                   &chip->reg->regs[chip->ch].imask);
 }
 
+static void ioh_irq_disable(struct irq_data *d)
+{
+        struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+        struct ioh_gpio *chip = gc->private;
+        unsigned long flags;
+        u32 ien;
+
+        spin_lock_irqsave(&chip->spinlock, flags);
+        ien = ioread32(&chip->reg->regs[chip->ch].ien);
+        ien &= ~(1 << (d->irq - chip->irq_base));
+        iowrite32(ien, &chip->reg->regs[chip->ch].ien);
+        spin_unlock_irqrestore(&chip->spinlock, flags);
+}
+
+static void ioh_irq_enable(struct irq_data *d)
+{
+        struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+        struct ioh_gpio *chip = gc->private;
+        unsigned long flags;
+        u32 ien;
+
+        spin_lock_irqsave(&chip->spinlock, flags);
+        ien = ioread32(&chip->reg->regs[chip->ch].ien);
+        ien |= 1 << (d->irq - chip->irq_base);
+        iowrite32(ien, &chip->reg->regs[chip->ch].ien);
+        spin_unlock_irqrestore(&chip->spinlock, flags);
+}
+
 static irqreturn_t ioh_gpio_handler(int irq, void *dev_id)
 {
         struct ioh_gpio *chip = dev_id;
@@ -370,6 +398,8 @@ static __devinit void ioh_gpio_alloc_generic_chip(struct ioh_gpio *chip,
         ct->chip.irq_mask = ioh_irq_mask;
         ct->chip.irq_unmask = ioh_irq_unmask;
         ct->chip.irq_set_type = ioh_irq_type;
+        ct->chip.irq_disable = ioh_irq_disable;
+        ct->chip.irq_enable = ioh_irq_enable;
 
         irq_setup_generic_chip(gc, IRQ_MSK(num), IRQ_GC_INIT_MASK_CACHE,
                                IRQ_NOREQUEST | IRQ_NOPROBE, 0);