diff options
Diffstat (limited to 'drivers/gpio/gpio-mxs.c')
| -rw-r--r-- | drivers/gpio/gpio-mxs.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-mxs.c b/drivers/gpio/gpio-mxs.c index 8ffdd7d2bade..56052c285714 100644 --- a/drivers/gpio/gpio-mxs.c +++ b/drivers/gpio/gpio-mxs.c @@ -227,6 +227,18 @@ static int mxs_gpio_to_irq(struct gpio_chip *gc, unsigned offset) return irq_find_mapping(port->domain, offset); } +static int mxs_gpio_get_direction(struct gpio_chip *gc, unsigned offset) +{ + struct bgpio_chip *bgc = to_bgpio_chip(gc); + struct mxs_gpio_port *port = + container_of(bgc, struct mxs_gpio_port, bgc); + u32 mask = 1 << offset; + u32 dir; + + dir = readl(port->base + PINCTRL_DOE(port)); + return !(dir & mask); +} + static struct platform_device_id mxs_gpio_ids[] = { { .name = "imx23-gpio", @@ -320,6 +332,7 @@ static int mxs_gpio_probe(struct platform_device *pdev) goto out_irqdesc_free; port->bgc.gc.to_irq = mxs_gpio_to_irq; + port->bgc.gc.get_direction = mxs_gpio_get_direction; port->bgc.gc.base = port->id * 32; err = gpiochip_add(&port->bgc.gc); |