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authorEunki Kim <eunki_kim@samsung.com>2012-10-23 17:39:38 +0400
committerKukjin Kim <kgene.kim@samsung.com>2012-10-23 17:39:38 +0400
commit2b88ff4a75f2175902389e3356d6227d7030e382 (patch)
tree699753b743ba0b373703757f892b8fa242465af2 /drivers/gpio/gpio-samsung.c
parent453e2dd768de8aa82ee503f1d45395149aa357d6 (diff)
downloadlinux-2b88ff4a75f2175902389e3356d6227d7030e382.tar.xz
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>
Diffstat (limited to 'drivers/gpio/gpio-samsung.c')
-rw-r--r--drivers/gpio/gpio-samsung.c7
1 files changed, 6 insertions, 1 deletions
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);
}
}