From 91492a44b998cf762150de8f1b40bda1902e8ea7 Mon Sep 17 00:00:00 2001 From: Rabin Vincent Date: Wed, 22 Jul 2015 15:05:18 +0200 Subject: gpio: generic: support input-only chips Allow chips to indicates that they are input-only and thus cannot set the output value. This will be used by the gpio-etraxfs driver. Signed-off-by: Rabin Vincent Signed-off-by: Linus Walleij --- include/linux/basic_mmio_gpio.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/basic_mmio_gpio.h b/include/linux/basic_mmio_gpio.h index 14eea946e640..ed3768f4ecc7 100644 --- a/include/linux/basic_mmio_gpio.h +++ b/include/linux/basic_mmio_gpio.h @@ -75,5 +75,6 @@ int bgpio_init(struct bgpio_chip *bgc, struct device *dev, #define BGPIOF_UNREADABLE_REG_DIR BIT(2) /* reg_dir is unreadable */ #define BGPIOF_BIG_ENDIAN_BYTE_ORDER BIT(3) #define BGPIOF_READ_OUTPUT_REG_SET BIT(4) /* reg_set stores output value */ +#define BGPIOF_NO_OUTPUT BIT(5) /* only input */ #endif /* __BASIC_MMIO_GPIO_H */ -- cgit v1.2.3