ARM: SAMSUNG: Add the missed s3c_gpio_getpull() API

This patch adds the s3c_gpio_getpull() API that has been missed in the
plat-samsung/gpio-config.c and actullay there is its extern declaration
in plat/gpio-cfg.h.

Signed-off-by: Daein Moon <moon9124@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/plat-samsung/gpio-config.c

@@ -111,6 +111,25 @@ int s3c_gpio_setpull(unsigned int pin, s3c_gpio_pull_t pull)
 }
 EXPORT_SYMBOL(s3c_gpio_setpull);
 
+s3c_gpio_pull_t s3c_gpio_getpull(unsigned int pin)
+{
+	struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);
+	unsigned long flags;
+	int offset;
+	u32 pup = 0;
+
+	if (chip) {
+		offset = pin - chip->chip.base;
+
+		s3c_gpio_lock(chip, flags);
+		pup = s3c_gpio_do_getpull(chip, offset);
+		s3c_gpio_unlock(chip, flags);
+	}
+
+	return (__force s3c_gpio_pull_t)pup;
+}
+EXPORT_SYMBOL(s3c_gpio_getpull);
+
 #ifdef CONFIG_S3C_GPIO_CFG_S3C24XX
 int s3c_gpio_setcfg_s3c24xx_a(struct s3c_gpio_chip *chip,
 			      unsigned int off, unsigned int cfg)

arch/arm/plat-samsung/include/plat/gpio-cfg-helpers.h

@@ -42,6 +42,12 @@ static inline int s3c_gpio_do_setpull(struct s3c_gpio_chip *chip,
 	return (chip->config->set_pull)(chip, off, pull);
 }
 
+static inline s3c_gpio_pull_t s3c_gpio_do_getpull(struct s3c_gpio_chip *chip,
+						  unsigned int off)
+{
+	return chip->config->get_pull(chip, off);
+}
+
 /**
  * s3c_gpio_setcfg_s3c24xx - S3C24XX style GPIO configuration.
  * @chip: The gpio chip that is being configured.