s5p: gpio: change gpio coding method for s5p gpio.

Old s5p gpio coding method was not clean and was not working properly
for all parts and banks. New method is clean and easy to extend.

Gpio coding mask:
0x000000ff - pin number
0x00ffff00 - bank offset
0xff000000 - part number

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

1 files changed, 36 insertions, 11 deletions

diff --git a/arch/arm/include/asm/arch-s5pc1xx/gpio.h b/arch/arm/include/asm/arch-s5pc1xx/gpio.h
index ac60fe6386..da8df74a10 100644
--- a/arch/arm/include/asm/arch-s5pc1xx/gpio.h
+++ b/arch/arm/include/asm/arch-s5pc1xx/gpio.h
@@ -125,20 +125,45 @@ void s5p_gpio_set_rate(struct s5p_gpio_bank *bank, int gpio, int mode);
 /* GPIO pins per bank  */
 #define GPIO_PER_BANK 8
 
-static inline unsigned int s5p_gpio_base(int nr)
-{
-	return S5PC110_GPIO_BASE;
-}
+#define S5P_GPIO_PART_SHIFT	(24)
+#define S5P_GPIO_PART_MASK	(0xff)
+#define S5P_GPIO_BANK_SHIFT	(8)
+#define S5P_GPIO_BANK_MASK	(0xffff)
+#define S5P_GPIO_PIN_MASK	(0xff)
+
+#define S5P_GPIO_SET_PART(x) \
+			(((x) & S5P_GPIO_PART_MASK) << S5P_GPIO_PART_SHIFT)
+
+#define S5P_GPIO_GET_PART(x) \
+			(((x) >> S5P_GPIO_PART_SHIFT) & S5P_GPIO_PART_MASK)
+
+#define S5P_GPIO_SET_PIN(x) \
+			((x) & S5P_GPIO_PIN_MASK)
 
-static inline unsigned int s5p_gpio_part_max(int nr)
+#define S5PC100_SET_BANK(bank) \
+			(((unsigned)&(((struct s5pc100_gpio *) \
+			S5PC100_GPIO_BASE)->bank) - S5PC100_GPIO_BASE) \
+			& S5P_GPIO_BANK_MASK) << S5P_GPIO_BANK_SHIFT)
+
+#define S5PC110_SET_BANK(bank) \
+			((((unsigned)&(((struct s5pc110_gpio *) \
+			S5PC110_GPIO_BASE)->bank) - S5PC110_GPIO_BASE) \
+			& S5P_GPIO_BANK_MASK) << S5P_GPIO_BANK_SHIFT)
+
+#define s5pc100_gpio_get(bank, pin) \
+			(S5P_GPIO_SET_PART(0) | \
+			S5PC100_SET_BANK(bank) | \
+			S5P_GPIO_SET_PIN(pin))
+
+#define s5pc110_gpio_get(bank, pin) \
+			(S5P_GPIO_SET_PART(0) | \
+			S5PC110_SET_BANK(bank) | \
+			S5P_GPIO_SET_PIN(pin))
+
+static inline unsigned int s5p_gpio_base(int nr)
 {
-	return 0;
+	return samsung_get_base_gpio();
 }
-
-#define s5pc110_gpio_get_nr(bank, pin)	  \
-	((((((unsigned int)&(((struct s5pc110_gpio *)S5PC110_GPIO_BASE)->bank))\
-	    - S5PC110_GPIO_BASE) / sizeof(struct s5p_gpio_bank)) \
-	  * GPIO_PER_BANK) + pin)
 #endif
 
 /* Pin configurations */