compulab: eeprom: add support for obtaining product name

Introduce cl_eeprom_get_product_name() for obtaining product name from the eeprom. Cc: Stefano Babic <sbabic@denx.de> Cc: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>

compulab: eeprom: add support for obtaining product name
Introduce cl_eeprom_get_product_name() for obtaining product name from the eeprom. Cc: Stefano Babic <sbabic@denx.de> Cc: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Nikita Kiryanov · Stefano Babic
1 parent e93e809f2f
Showing 2 changed files with 36 additions and 0 deletions Side-by-side Diff
board/compulab/common/eeprom.c
board/compulab/common/eeprom.h
@@ -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
  
@@ -151,4 +154,31 @@
  
 	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;
+}
@@ -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)
 {
@@ -21,6 +23,10 @@
 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
...	...	@@ -9,6 +9,7 @@
9	9
10	10	#include <common.h>
11	11	#include <i2c.h>
	12	+#include "eeprom.h"
12	13
13	14	#ifndef CONFIG_SYS_I2C_EEPROM_ADDR
14	15	# define CONFIG_SYS_I2C_EEPROM_ADDR 0x50
...	...	@@ -25,6 +26,8 @@
25	26	#define BOARD_REV_OFFSET 0
26	27	#define BOARD_REV_OFFSET_LEGACY 6
27	28	#define BOARD_REV_SIZE 2
	29	+#define PRODUCT_NAME_OFFSET 128
	30	+#define PRODUCT_NAME_SIZE 16
28	31	#define MAC_ADDR_OFFSET 4
29	32	#define MAC_ADDR_OFFSET_LEGACY 0
30	33
...	...	@@ -151,4 +154,31 @@
151	154
152	155	return board_rev;
153	156	};
	157	+
	158	+/*
	159	+ * Routine: cl_eeprom_get_board_rev
	160	+ * Description: read system revision from eeprom
	161	+ *
	162	+ * @buf: buffer to store the product name
	163	+ * @eeprom_bus: i2c bus num of the eeprom
	164	+ *
	165	+ * @return: 0 on success, < 0 on failure
	166	+ */
	167	+int cl_eeprom_get_product_name(uchar *buf, uint eeprom_bus)
	168	+{
	169	+ int err;
	170	+
	171	+ if (buf == NULL)
	172	+ return -EINVAL;
	173	+
	174	+ err = cl_eeprom_setup(eeprom_bus);
	175	+ if (err)
	176	+ return err;
	177	+
	178	+ err = cl_eeprom_read(PRODUCT_NAME_OFFSET, buf, PRODUCT_NAME_SIZE);
	179	+ if (!err) /* Protect ourselves from invalid data (unterminated str) */
	180	+ buf[PRODUCT_NAME_SIZE - 1] = '\0';
	181	+
	182	+ return err;
	183	+}
...	...	@@ -9,10 +9,12 @@
9	9
10	10	#ifndef _EEPROM_
11	11	#define _EEPROM_
	12	+#include <errno.h>
12	13
13	14	#ifdef CONFIG_SYS_I2C
14	15	int cl_eeprom_read_mac_addr(uchar *buf, uint eeprom_bus);
15	16	u32 cl_eeprom_get_board_rev(uint eeprom_bus);
	17	+int cl_eeprom_get_product_name(uchar *buf, uint eeprom_bus);
16	18	#else
17	19	static inline int cl_eeprom_read_mac_addr(uchar *buf, uint eeprom_bus)
18	20	{
...	...	@@ -21,6 +23,10 @@
21	23	static inline u32 cl_eeprom_get_board_rev(uint eeprom_bus)
22	24	{
23	25	return 0;
	26	+}
	27	+static inline int cl_eeprom_get_product_name(uchar *buf, uint eeprom_bus)
	28	+{
	29	+ return -ENOSYS;
24	30	}
25	31	#endif
26	32