diff options
Diffstat (limited to 'drivers/gpio/gpio-vr41xx.c')
| -rw-r--r-- | drivers/gpio/gpio-vr41xx.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-vr41xx.c b/drivers/gpio/gpio-vr41xx.c index 9902732a382d..66cbcc108e62 100644 --- a/drivers/gpio/gpio-vr41xx.c +++ b/drivers/gpio/gpio-vr41xx.c @@ -81,6 +81,7 @@ static DEFINE_SPINLOCK(giu_lock); static unsigned long giu_flags; static void __iomem *giu_base; +static struct gpio_chip vr41xx_gpio_chip; #define giu_read(offset) readw(giu_base + (offset)) #define giu_write(offset, value) writew((value), giu_base + (offset)) @@ -135,12 +136,31 @@ static void unmask_giuint_low(struct irq_data *d) giu_set(GIUINTENL, 1 << GPIO_PIN_OF_IRQ(d->irq)); } +static unsigned int startup_giuint(struct irq_data *data) +{ + if (gpio_lock_as_irq(&vr41xx_gpio_chip, data->hwirq)) + dev_err(vr41xx_gpio_chip.dev, + "unable to lock HW IRQ %lu for IRQ\n", + data->hwirq); + /* Satisfy the .enable semantics by unmasking the line */ + unmask_giuint_low(data); + return 0; +} + +static void shutdown_giuint(struct irq_data *data) +{ + mask_giuint_low(data); + gpio_unlock_as_irq(&vr41xx_gpio_chip, data->hwirq); +} + static struct irq_chip giuint_low_irq_chip = { .name = "GIUINTL", .irq_ack = ack_giuint_low, .irq_mask = mask_giuint_low, .irq_mask_ack = mask_ack_giuint_low, .irq_unmask = unmask_giuint_low, + .irq_startup = startup_giuint, + .irq_shutdown = shutdown_giuint, }; static void ack_giuint_high(struct irq_data *d) |