[U-Boot] [PATCH V2 3/4] compulab: eeprom: add support for obtaining product name

[Nikita Kiryanov]

Introduce cl_eeprom_get_product_name() for obtaining product name
from the eeprom.

Cc: Stefano Babic <sbabic at denx.de>
Cc: Igor Grinberg <grinberg at compulab.co.il>
Signed-off-by: Nikita Kiryanov <nikita at compulab.co.il>
---
Changes in V2:
	- s/BOARD_PRODUCT_NAME_*/PRODUCT_NAME_*
	- Added documentation
	- rewrote cl_eeprom_get_product_name() to take a buffer parameter

 board/compulab/common/eeprom.c | 30 ++++++++++++++++++++++++++++++
 board/compulab/common/eeprom.h |  6 ++++++
 2 files changed, 36 insertions(+)

diff --git a/board/compulab/common/eeprom.c b/board/compulab/common/eeprom.c
index 9f18a3d..6304468 100644
--- a/board/compulab/common/eeprom.c
+++ b/board/compulab/common/eeprom.c
@@ -9,6 +9,7 @@
 
 #include <common.h>
 #include <i2c.h>
+#include "eeprom.h"
 
 #ifndef CONFIG_SYS_I2C_EEPROM_ADDR
 # define CONFIG_SYS_I2C_EEPROM_ADDR	0x50
@@ -25,6 +26,8 @@
 #define BOARD_REV_OFFSET		0
 #define BOARD_REV_OFFSET_LEGACY		6
 #define BOARD_REV_SIZE			2
+#define PRODUCT_NAME_OFFSET		128
+#define PRODUCT_NAME_SIZE		16
 #define MAC_ADDR_OFFSET			4
 #define MAC_ADDR_OFFSET_LEGACY		0
 
@@ -151,3 +154,30 @@ u32 cl_eeprom_get_board_rev(uint eeprom_bus)
 
 	return board_rev;
 };
+
+/*
+ * Routine: cl_eeprom_get_board_rev
+ * Description: read system revision from eeprom
+ *
+ * @buf: buffer to store the product name
+ * @eeprom_bus: i2c bus num of the eeprom
+ *
+ * @return: 0 on success, < 0 on failure
+ */
+int cl_eeprom_get_product_name(uchar *buf, uint eeprom_bus)
+{
+	int err;
+
+	if (buf == NULL)
+		return -EINVAL;
+
+	err = cl_eeprom_setup(eeprom_bus);
+	if (err)
+		return err;
+
+	err = cl_eeprom_read(PRODUCT_NAME_OFFSET, buf, PRODUCT_NAME_SIZE);
+	if (!err) /* Protect ourselves from invalid data (unterminated str) */
+		buf[PRODUCT_NAME_SIZE - 1] = '\0';
+
+	return err;
+}
diff --git a/board/compulab/common/eeprom.h b/board/compulab/common/eeprom.h
index e74c379..c0b4739 100644
--- a/board/compulab/common/eeprom.h
+++ b/board/compulab/common/eeprom.h
@@ -9,10 +9,12 @@
 
 #ifndef _EEPROM_
 #define _EEPROM_
+#include <errno.h>
 
 #ifdef CONFIG_SYS_I2C
 int cl_eeprom_read_mac_addr(uchar *buf, uint eeprom_bus);
 u32 cl_eeprom_get_board_rev(uint eeprom_bus);
+int cl_eeprom_get_product_name(uchar *buf, uint eeprom_bus);
 #else
 static inline int cl_eeprom_read_mac_addr(uchar *buf, uint eeprom_bus)
 {
@@ -22,6 +24,10 @@ static inline u32 cl_eeprom_get_board_rev(uint eeprom_bus)
 {
 	return 0;
 }
+static inline int cl_eeprom_get_product_name(uchar *buf, uint eeprom_bus)
+{
+	return -ENOSYS;
+}
 #endif
 
 #endif
-- 
1.9.1