From 0091337932130ebe9c0a64ac7ef922e9100353be Mon Sep 17 00:00:00 2001
From: Heiko Schocher <hs@denx.de>
Date: Wed, 10 Nov 2010 08:57:55 +0100
Subject: [PATCH 1/2] i2c, mpc5xxx: add multibus support

Tested on upcoming hydra (mpc5200 based) board.

Signed-off-by: Heiko Schocher <hs@denx.de>
---
 arch/powerpc/cpu/mpc5xxx/i2c.c | 43 ++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/arch/powerpc/cpu/mpc5xxx/i2c.c b/arch/powerpc/cpu/mpc5xxx/i2c.c
index 4f7f716328..9fb330f82f 100644
--- a/arch/powerpc/cpu/mpc5xxx/i2c.c
+++ b/arch/powerpc/cpu/mpc5xxx/i2c.c
@@ -30,6 +30,7 @@ DECLARE_GLOBAL_DATA_PTR;
 #include <mpc5xxx.h>
 #include <i2c.h>
 
+#if !defined(CONFIG_I2C_MULTI_BUS)
 #if (CONFIG_SYS_I2C_MODULE == 2)
 #define I2C_BASE	MPC5XXX_I2C2
 #elif (CONFIG_SYS_I2C_MODULE == 1)
@@ -37,6 +38,19 @@ DECLARE_GLOBAL_DATA_PTR;
 #else
 #error CONFIG_SYS_I2C_MODULE is not properly configured
 #endif
+#else
+static unsigned int i2c_bus_num __attribute__ ((section (".data"))) =
+						CONFIG_SYS_SPD_BUS_NUM;
+static unsigned int i2c_bus_speed[2] = {CONFIG_SYS_I2C_SPEED,
+					CONFIG_SYS_I2C_SPEED};
+
+static const  unsigned long i2c_dev[2] = {
+	MPC5XXX_I2C1,
+	MPC5XXX_I2C2,
+};
+
+#define I2C_BASE	((struct mpc5xxx_i2c *)i2c_dev[i2c_bus_num])
+#endif
 
 #define I2C_TIMEOUT	6667
 #define I2C_RETRIES	3
@@ -439,4 +453,33 @@ Done:
 	return ret;
 }
 
+#if defined(CONFIG_I2C_MULTI_BUS)
+int i2c_set_bus_num(unsigned int bus)
+{
+	if (bus > 1)
+		return -1;
+
+	i2c_bus_num = bus;
+	i2c_init(i2c_bus_speed[bus], CONFIG_SYS_I2C_SLAVE);
+	return 0;
+}
+
+int i2c_set_bus_speed(unsigned int speed)
+{
+	i2c_init(speed, CONFIG_SYS_I2C_SLAVE);
+	return 0;
+}
+
+unsigned int i2c_get_bus_num(void)
+{
+	return i2c_bus_num;
+}
+
+unsigned int i2c_get_bus_speed(void)
+{
+	return i2c_bus_speed[i2c_bus_num];
+}
+#endif
+
+
 #endif	/* CONFIG_HARD_I2C */

From 9b107e6138e719ea5a0b924862a9b109c020c7ac Mon Sep 17 00:00:00 2001
From: Heiko Schocher <hs@denx.de>
Date: Mon, 15 Nov 2010 08:20:39 +0100
Subject: [PATCH 2/2] post, i2c: add missing curly bracket in i2c_post_test

If CONFIG_SYS_POST_I2C_ADDRS is not defined and CONFIG_SYS_POST_I2C
is activated, i2c_probe() is not called in the for statement,
because missing curly bracket.

Signed-off-by: Heiko Schocher <hs@denx.de>
---
 post/drivers/i2c.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/post/drivers/i2c.c b/post/drivers/i2c.c
index 4a1b1a49d1..4cbd9f3703 100644
--- a/post/drivers/i2c.c
+++ b/post/drivers/i2c.c
@@ -63,11 +63,12 @@ int i2c_post_test (int flags)
 	unsigned int i;
 #ifndef CONFIG_SYS_POST_I2C_ADDRS
 	/* Start at address 1, address 0 is the general call address */
-	for (i = 1; i < 128; i++)
+	for (i = 1; i < 128; i++) {
 		if (i2c_ignore_device(i))
 			continue;
 		if (i2c_probe (i) == 0)
 			return 0;
+	}
 
 	/* No devices found */
 	return -1;