From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nikita Kiryanov Date: Thu, 7 Aug 2014 16:05:32 +0300 Subject: [U-Boot] [PATCH V2 5/9] compulab: eeprom: add support for defining eeprom i2c bus In-Reply-To: <1407416736-14639-1-git-send-email-nikita@compulab.co.il> References: <1407416736-14639-1-git-send-email-nikita@compulab.co.il> Message-ID: <1407416736-14639-6-git-send-email-nikita@compulab.co.il> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de 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 Cc: Dmitry Lifshitz Cc: Tom Rini Cc: Marek Vasut Acked-by: Igor Grinberg Acked-by: Dmitry Lifshitz Signed-off-by: Nikita Kiryanov --- Changes in V2: - Check return value of i2c_set_bus_num(CONFIG_SYS_I2C_EEPROM_BUS) 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 20fe3e1..85442cd 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 a3e6452..767ef3a 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 d8d71a9..b5702e3 100644 --- a/include/configs/cm_t35.h +++ b/include/configs/cm_t35.h @@ -136,6 +136,7 @@ #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 db04095..aa97823 100644 --- a/include/configs/cm_t54.h +++ b/include/configs/cm_t54.h @@ -27,6 +27,7 @@ #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 -- 1.9.1