powerpc/82xx: make set/get_pin for km82xx more flexible

The get_pin and set_pin funciton was only used for pins on Port D and
therefore the value was hard coded in the function. Enhance this with a
parameter, that we are able to use this functions for other ports too.

Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>

board/keymile/km82xx/km82xx.c

@@ -343,7 +343,7 @@ int last_stage_init(void)
 }
 
 #ifdef CONFIG_MGCOGE3NE
-static void set_pin(int state, unsigned long mask);
+static void set_pin(int state, unsigned long mask, int port);
 
 /*
  * For mgcoge3ne boards, the mgcoge3un control is controlled from
@@ -357,11 +357,11 @@ static void handle_mgcoge3un_reset(void)
 	if (bobcatreset) {
 		if (strcmp(bobcatreset, "true") == 0) {
 			puts("Forcing bobcat reset\n");
-			set_pin(0, 0x00000004);	/* clear PD29 to reset arm */
+			set_pin(0, 0x00000004, 3); /* clear PD29 (reset arm) */
 			udelay(1000);
-			set_pin(1, 0x00000004);
+			set_pin(1, 0x00000004, 3);
 		} else
-			set_pin(1, 0x00000004);	/* set PD29 to not reset arm */
+			set_pin(1, 0x00000004, 3); /* don't reset arm */
 	}
 }
 #endif
@@ -410,9 +410,9 @@ int hush_init_var(void)
 #define SDA_MASK	0x00010000
 #define SCL_MASK	0x00020000
 
-static void set_pin(int state, unsigned long mask)
+static void set_pin(int state, unsigned long mask, int port)
 {
-	ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3);
+	ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, port);
 
 	if (state)
 		setbits_be32(&iop->pdat, mask);
@@ -422,9 +422,9 @@ static void set_pin(int state, unsigned long mask)
 	setbits_be32(&iop->pdir, mask);
 }
 
-static int get_pin(unsigned long mask)
+static int get_pin(unsigned long mask, int port)
 {
-	ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3);
+	ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, port);
 
 	clrbits_be32(&iop->pdir, mask);
 	return 0 != (in_be32(&iop->pdat) & mask);
@@ -432,22 +432,22 @@ static int get_pin(unsigned long mask)
 
 void set_sda(int state)
 {
-	set_pin(state, SDA_MASK);
+	set_pin(state, SDA_MASK, 3);
 }
 
 void set_scl(int state)
 {
-	set_pin(state, SCL_MASK);
+	set_pin(state, SCL_MASK, 3);
 }
 
 int get_sda(void)
 {
-	return get_pin(SDA_MASK);
+	return get_pin(SDA_MASK, 3);
 }
 
 int get_scl(void)
 {
-	return get_pin(SCL_MASK);
+	return get_pin(SCL_MASK, 3);
 }
 
 #if defined(CONFIG_HARD_I2C)