[U-Boot] [PATCH] i2c:samsung: Adjust Trats, GONI and Universal_c210 boards to work with new I2C framework

[Lukasz Majewski]

New I2C framework, introduced after v2013.07 final release, imposed I2C
code adjustment for some Samsung boards - namely Trats, GONI and Universal_c210.

Those boards were using schematic based I2C enumeration (I2C_5, I2C_9).
However, new I2C framework imposes usage of logical I2C adapters numbering
(e.g. I2C_0, I2C_1, etc).

Additionally, I2C_GET_* macros were replaced with i2c_*_bus_num() functions.

Trats board gained definition of second soft I2C adapter.

Signed-off-by: Lukasz Majewski <l.majewski at samsung.com>
Cc: Minkyu Kang <mk7.kang at samsung.com>
Cc: Heiko Schocher <hs at denx.de>
---
 board/samsung/common/multi_i2c.c         |   14 ++++++--------
 board/samsung/goni/goni.c                |    6 +++++-
 board/samsung/trats/trats.c              |   17 ++++++++++++-----
 board/samsung/universal_c210/universal.c |    4 ++++
 include/configs/trats.h                  |    3 +++
 5 files changed, 30 insertions(+), 14 deletions(-)

diff --git a/board/samsung/common/multi_i2c.c b/board/samsung/common/multi_i2c.c
index 4fce987..084858d 100644
--- a/board/samsung/common/multi_i2c.c
+++ b/board/samsung/common/multi_i2c.c
@@ -11,13 +11,12 @@
 /* Handle multiple I2C buses instances */
 int get_multi_scl_pin(void)
 {
-	unsigned int bus = I2C_GET_BUS();
+	unsigned int bus = i2c_get_bus_num();
 
 	switch (bus) {
-	case I2C_0: /* I2C_0 definition - compatibility layer */
-	case I2C_5:
+	case I2C_0:
 		return CONFIG_SOFT_I2C_I2C5_SCL;
-	case I2C_9:
+	case I2C_1:
 		return CONFIG_SOFT_I2C_I2C9_SCL;
 	default:
 		printf("I2C_%d not supported!\n", bus);
@@ -28,13 +27,12 @@ int get_multi_scl_pin(void)
 
 int get_multi_sda_pin(void)
 {
-	unsigned int bus = I2C_GET_BUS();
+	unsigned int bus = i2c_get_bus_num();
 
 	switch (bus) {
-	case I2C_0: /* I2C_0 definition - compatibility layer */
-	case I2C_5:
+	case I2C_0:
 		return CONFIG_SOFT_I2C_I2C5_SDA;
-	case I2C_9:
+	case I2C_1:
 		return CONFIG_SOFT_I2C_I2C9_SDA;
 	default:
 		printf("I2C_%d not supported!\n", bus);
diff --git a/board/samsung/goni/goni.c b/board/samsung/goni/goni.c
index c05801d..5b3d6ef 100644
--- a/board/samsung/goni/goni.c
+++ b/board/samsung/goni/goni.c
@@ -32,7 +32,11 @@ int power_init_board(void)
 {
 	int ret;
 
-	ret = pmic_init(I2C_5);
+	/*
+	 * For PMIC the I2C bus is named as I2C5, but it is connected
+	 * to logical I2C adapter 0
+	 */
+	ret = pmic_init(I2C_0);
 	if (ret)
 		return ret;
 
diff --git a/board/samsung/trats/trats.c b/board/samsung/trats/trats.c
index c8698f3..7f61d17 100644
--- a/board/samsung/trats/trats.c
+++ b/board/samsung/trats/trats.c
@@ -61,10 +61,10 @@ void i2c_init_board(void)
 	struct exynos4_gpio_part2 *gpio2 =
 		(struct exynos4_gpio_part2 *)samsung_get_base_gpio_part2();
 
-	/* I2C_5 -> PMIC */
+	/* I2C_5 -> PMIC -> Adapter 0 */
 	s5p_gpio_direction_output(&gpio1->b, 7, 1);
 	s5p_gpio_direction_output(&gpio1->b, 6, 1);
-	/* I2C_9 -> FG */
+	/* I2C_9 -> FG -> Adapter 1 */
 	s5p_gpio_direction_output(&gpio2->y4, 0, 1);
 	s5p_gpio_direction_output(&gpio2->y4, 1, 1);
 }
@@ -282,10 +282,17 @@ int power_init_board(void)
 	struct power_battery *pb;
 	struct pmic *p_fg, *p_chrg, *p_muic, *p_bat;
 
-	ret = pmic_init(I2C_5);
+	/*
+	 * For PMIC/MUIC the I2C bus is named as I2C5, but it is connected
+	 * to logical I2C adapter 0
+	 *
+	 * The FUEL_GAUGE is marked as I2C9 on the schematic, but connected
+	 * to logical I2C adapter 1
+	 */
+	ret = pmic_init(I2C_0);
 	ret |= pmic_init_max8997();
-	ret |= power_fg_init(I2C_9);
-	ret |= power_muic_init(I2C_5);
+	ret |= power_fg_init(I2C_1);
+	ret |= power_muic_init(I2C_0);
 	ret |= power_bat_init(0);
 	if (ret)
 		return ret;
diff --git a/board/samsung/universal_c210/universal.c b/board/samsung/universal_c210/universal.c
index 2e1dba6..54d0e1e 100644
--- a/board/samsung/universal_c210/universal.c
+++ b/board/samsung/universal_c210/universal.c
@@ -45,6 +45,10 @@ int power_init_board(void)
 {
 	int ret;
 
+	/*
+	 * For PMIC the I2C bus is named as I2C5, but it is connected
+	 * to logical I2C adapter 0
+	 */
 	ret = pmic_init(I2C_5);
 	if (ret)
 		return ret;
diff --git a/include/configs/trats.h b/include/configs/trats.h
index 9b6aac9..24ea06b 100644
--- a/include/configs/trats.h
+++ b/include/configs/trats.h
@@ -263,6 +263,9 @@
 #define CONFIG_SYS_I2C_SOFT		/* I2C bit-banged */
 #define CONFIG_SYS_I2C_SOFT_SPEED	50000
 #define CONFIG_SYS_I2C_SOFT_SLAVE	0xFE
+#define I2C_SOFT_DECLARATIONS2
+#define CONFIG_SYS_I2C_SOFT_SPEED_2     50000
+#define CONFIG_SYS_I2C_SOFT_SLAVE_2     0x7F
 #define CONFIG_SOFT_I2C_READ_REPEATED_START
 #define CONFIG_SYS_I2C_INIT_BOARD
 #define CONFIG_I2C_MULTI_BUS
-- 
1.7.10.4