diff options
Diffstat (limited to 'drivers/gpio/gpio-ep93xx.c')
| -rw-r--r-- | drivers/gpio/gpio-ep93xx.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-ep93xx.c b/drivers/gpio/gpio-ep93xx.c index 72fb9c665320..fbd6a6066777 100644 --- a/drivers/gpio/gpio-ep93xx.c +++ b/drivers/gpio/gpio-ep93xx.c @@ -307,6 +307,21 @@ static int ep93xx_gpio_set_debounce(struct gpio_chip *chip, return 0; } +/* + * Map GPIO A0..A7 (0..7) to irq 64..71, + * B0..B7 (7..15) to irq 72..79, and + * F0..F7 (16..24) to irq 80..87. + */ +static int ep93xx_gpio_to_irq(struct gpio_chip *chip, unsigned offset) +{ + int gpio = chip->base + offset; + + if (gpio > EP93XX_GPIO_LINE_MAX_IRQ) + return -EINVAL; + + return 64 + gpio; +} + static int ep93xx_gpio_add_bank(struct bgpio_chip *bgc, struct device *dev, void __iomem *mmio_base, struct ep93xx_gpio_bank *bank) { @@ -321,8 +336,10 @@ static int ep93xx_gpio_add_bank(struct bgpio_chip *bgc, struct device *dev, bgc->gc.label = bank->label; bgc->gc.base = bank->base; - if (bank->has_debounce) + if (bank->has_debounce) { bgc->gc.set_debounce = ep93xx_gpio_set_debounce; + bgc->gc.to_irq = ep93xx_gpio_to_irq; + } return gpiochip_add(&bgc->gc); } |