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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 <eunki_kim@samsung.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Eunki Kim 2012-10-23 22:39:38 +09:00 committed by Kukjin Kim
parent 453e2dd768
commit 2b88ff4a75
1 changed files with 6 additions and 1 deletions
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7
drivers/gpio/gpio-samsung.c
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@ -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);
}
}