From 2b88ff4a75f2175902389e3356d6227d7030e382 Mon Sep 17 00:00:00 2001 From: Eunki Kim Date: Tue, 23 Oct 2012 22:39:38 +0900 Subject: gpio: samsung: Fix input mode setting function for GPIO int This patch makes GPIO pin to INTERRUPT mode or INPUT mode according to bitmap_gpio_int. When the related bit of bitmap_gpio_int is set, it makes GPIO pin to INTERRUPT mode instrad of INPUT mode in the samsung_gpiolib_4bit_input function. Signed-off-by: Eunki Kim Acked-by: Linus Walleij Signed-off-by: Kukjin Kim --- drivers/gpio/gpio-samsung.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers/gpio/gpio-samsung.c') diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c index a006f0db15af..15be3d9aebe9 100644 --- a/drivers/gpio/gpio-samsung.c +++ b/drivers/gpio/gpio-samsung.c @@ -596,7 +596,10 @@ static int samsung_gpiolib_4bit_input(struct gpio_chip *chip, unsigned long con; con = __raw_readl(base + GPIOCON_OFF); - con &= ~(0xf << con_4bit_shift(offset)); + if (ourchip->bitmap_gpio_int & BIT(offset)) + con |= 0xf << con_4bit_shift(offset); + else + con &= ~(0xf << con_4bit_shift(offset)); __raw_writel(con, base + GPIOCON_OFF); gpio_dbg("%s: %p: CON now %08lx\n", __func__, base, con); @@ -1081,6 +1084,8 @@ static void __init samsung_gpiolib_add_4bit_chips(struct samsung_gpio_chip *chip if ((base != NULL) && (chip->base == NULL)) chip->base = base + ((i) * 0x20); + chip->bitmap_gpio_int = 0; + samsung_gpiolib_add(chip); } } -- cgit v1.2.3