From 52658fda7abc4319ff7f8fe934d2e7c0a32202d7 Mon Sep 17 00:00:00 2001
From: Nikita Kiryanov <nikita@compulab.co.il>
Date: Wed, 20 Aug 2014 15:08:52 +0300
Subject: [PATCH] compulab: eeprom: add support for defining eeprom i2c bus
Create CONFIG_SYS_I2C_EEPROM_BUS #define to tell the EEPROM
module what I2C bus the EEPROM is located at. Make cl_eeprom_read()
switch to that bus when reading EEPROM.
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Dmitry Lifshitz <lifshitz@compulab.co.il>
Cc: Tom Rini <trini@ti.com>
Cc: Marek Vasut <marex@denx.de>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Acked-by: Dmitry Lifshitz <lifshitz@compulab.co.il>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
---
board/compulab/common/eeprom.c | 13 ++++++++++++-
include/configs/cm_t335.h | 1 +
include/configs/cm_t35.h | 1 +
include/configs/cm_t54.h | 1 +
4 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/board/compulab/common/eeprom.c b/board/compulab/common/eeprom.c
index 20fe3e1960..85442cd103 100644
--- a/board/compulab/common/eeprom.c
+++ b/board/compulab/common/eeprom.c
@@ -31,8 +31,19 @@ static int cl_eeprom_layout; /* Implicitly LAYOUT_INVALID */
static int cl_eeprom_read(uint offset, uchar *buf, int len)
{
- return i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, offset,
+ int res;
+ unsigned int current_i2c_bus = i2c_get_bus_num();
+
+ res = i2c_set_bus_num(CONFIG_SYS_I2C_EEPROM_BUS);
+ if (res < 0)
+ return res;
+
+ res = i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, offset,
CONFIG_SYS_I2C_EEPROM_ADDR_LEN, buf, len);
+
+ i2c_set_bus_num(current_i2c_bus);
+
+ return res;
}
static int cl_eeprom_setup_layout(void)
diff --git a/include/configs/cm_t335.h b/include/configs/cm_t335.h
index a3e6452ec1..767ef3a266 100644
--- a/include/configs/cm_t335.h
+++ b/include/configs/cm_t335.h
@@ -107,6 +107,7 @@
/* I2C Configuration */
#define CONFIG_SYS_I2C_EEPROM_ADDR 0x50 /* Main EEPROM */
#define CONFIG_SYS_I2C_EEPROM_ADDR_LEN 1
+#define CONFIG_SYS_I2C_EEPROM_BUS 0
/* SPL */
#define CONFIG_SPL_LDSCRIPT "$(CPUDIR)/am33xx/u-boot-spl.lds"
diff --git a/include/configs/cm_t35.h b/include/configs/cm_t35.h
index 70df1ebc67..6f4d97f2fd 100644
--- a/include/configs/cm_t35.h
+++ b/include/configs/cm_t35.h
@@ -135,6 +135,7 @@
#define CONFIG_SYS_I2C_OMAP34XX
#define CONFIG_SYS_I2C_EEPROM_ADDR 0x50
#define CONFIG_SYS_I2C_EEPROM_ADDR_LEN 1
+#define CONFIG_SYS_I2C_EEPROM_BUS 0
#define CONFIG_I2C_MULTI_BUS
/*
diff --git a/include/configs/cm_t54.h b/include/configs/cm_t54.h
index df93a59c1b..641ab48c2c 100644
--- a/include/configs/cm_t54.h
+++ b/include/configs/cm_t54.h
@@ -30,6 +30,7 @@
#define CONFIG_SYS_I2C_OMAP34XX
#define CONFIG_SYS_I2C_EEPROM_ADDR 0x50
#define CONFIG_SYS_I2C_EEPROM_ADDR_LEN 1
+#define CONFIG_SYS_I2C_EEPROM_BUS 0
/* Enable SD/MMC CD and WP GPIOs */
#define OMAP_HSMMC_USE_GPIO
--
2.39.5