cm-t35: move the eeprom code to common place

Compulab boards use the same eeprom code, so move the eeprom related
code to live under board/compulab/common directory.
Also make several adjustments to eeprom functions namespace, so it will
be generic for compulab boards.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Tested-by: Nikita Kiryanov <nikita@compulab.co.il>

board/compulab/cm_t35/Makefile

@@ -11,7 +11,6 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).o
 
-COBJS-$(CONFIG_DRIVER_OMAP34XX_I2C) += eeprom.o
 COBJS-$(CONFIG_LCD) += display.o
 
 COBJS	:= cm_t35.o leds.o $(COBJS-y)

board/compulab/cm_t35/cm_t35.c

@@ -33,7 +33,7 @@
 #include <asm/ehci-omap.h>
 #include <asm/gpio.h>
 
-#include "eeprom.h"
+#include "../common/eeprom.h"
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -160,7 +160,7 @@ static u32 cm_t3x_rev;
 u32 get_board_rev(void)
 {
 	if (!cm_t3x_rev)
-		cm_t3x_rev = cm_t3x_eeprom_get_board_rev();
+		cm_t3x_rev = cl_eeprom_get_board_rev();
 
 	return cm_t3x_rev;
 };
@@ -509,7 +509,7 @@ static int handle_mac_address(void)
 	if (rc)
 		return 0;
 
-	rc = cm_t3x_eeprom_read_mac_addr(enetaddr);
+	rc = cl_eeprom_read_mac_addr(enetaddr);
 	if (rc)
 		return rc;
 
@@ -598,5 +598,4 @@ int ehci_hcd_stop(void)
 {
 	return omap_ehci_hcd_stop();
 }
-
 #endif /* CONFIG_USB_EHCI_OMAP */

board/compulab/common/Makefile

@@ -0,0 +1,35 @@
+#
+# (C) Copyright 2011 - 2013 CompuLab, Ltd. <www.compulab.co.il>
+#
+# Author: Igor Grinberg <grinberg@compulab.co.il>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+include $(TOPDIR)/config.mk
+
+ifneq ($(OBJTREE),$(SRCTREE))
+$(shell mkdir -p $(obj)board/$(VENDOR)/common)
+endif
+
+LIB	= $(obj)lib$(VENDOR).o
+
+COBJS-$(CONFIG_DRIVER_OMAP34XX_I2C) += eeprom.o
+
+COBJS	:= $(COBJS-y)
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+all:	$(LIB)
+
+$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
+	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
+
+#########################################################################
+# This is for $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################

board/compulab/common/eeprom.c

@@ -22,30 +22,30 @@
 #define LAYOUT_INVALID	0
 #define LAYOUT_LEGACY	0xff
 
-static int eeprom_layout; /* Implicitly LAYOUT_INVALID */
+static int cl_eeprom_layout; /* Implicitly LAYOUT_INVALID */
 
-static int cm_t3x_eeprom_read(uint offset, uchar *buf, int len)
+static int cl_eeprom_read(uint offset, uchar *buf, int len)
 {
 	return i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, offset,
 			CONFIG_SYS_I2C_EEPROM_ADDR_LEN, buf, len);
 }
 
-static int eeprom_setup_layout(void)
+static int cl_eeprom_setup_layout(void)
 {
 	int res;
 
-	if (eeprom_layout != LAYOUT_INVALID)
+	if (cl_eeprom_layout != LAYOUT_INVALID)
 		return 0;
 
-	res = cm_t3x_eeprom_read(EEPROM_LAYOUT_VER_OFFSET,
-						(uchar *)&eeprom_layout, 1);
+	res = cl_eeprom_read(EEPROM_LAYOUT_VER_OFFSET,
+			     (uchar *)&cl_eeprom_layout, 1);
 	if (res) {
-		eeprom_layout = LAYOUT_INVALID;
+		cl_eeprom_layout = LAYOUT_INVALID;
 		return res;
 	}
 
-	if (eeprom_layout == 0 || eeprom_layout >= 0x20)
-		eeprom_layout = LAYOUT_LEGACY;
+	if (cl_eeprom_layout == 0 || cl_eeprom_layout >= 0x20)
+		cl_eeprom_layout = LAYOUT_LEGACY;
 
 	return 0;
 }
@@ -56,12 +56,14 @@ void get_board_serial(struct tag_serialnr *serialnr)
 	uint offset;
 
 	memset(serialnr, 0, sizeof(*serialnr));
-	if (eeprom_setup_layout())
+
+	if (cl_eeprom_setup_layout())
 		return;
 
-	offset = (eeprom_layout != LAYOUT_LEGACY) ?
-			BOARD_SERIAL_OFFSET : BOARD_SERIAL_OFFSET_LEGACY;
-	if (cm_t3x_eeprom_read(offset, (uchar *)serial, 8))
+	offset = (cl_eeprom_layout != LAYOUT_LEGACY) ?
+		BOARD_SERIAL_OFFSET : BOARD_SERIAL_OFFSET_LEGACY;
+
+	if (cl_eeprom_read(offset, (uchar *)serial, 8))
 		return;
 
 	if (serial[0] != 0xffffffff && serial[1] != 0xffffffff) {
@@ -71,45 +73,46 @@ void get_board_serial(struct tag_serialnr *serialnr)
 }
 
 /*
- * Routine: cm_t3x_eeprom_read_mac_addr
+ * Routine: cl_eeprom_read_mac_addr
  * Description: read mac address and store it in buf.
  */
-int cm_t3x_eeprom_read_mac_addr(uchar *buf)
+int cl_eeprom_read_mac_addr(uchar *buf)
 {
 	uint offset;
 
-	if (eeprom_setup_layout())
+	if (cl_eeprom_setup_layout())
 		return 0;
 
-	offset = (eeprom_layout != LAYOUT_LEGACY) ?
+	offset = (cl_eeprom_layout != LAYOUT_LEGACY) ?
 			MAC_ADDR_OFFSET : MAC_ADDR_OFFSET_LEGACY;
-	return cm_t3x_eeprom_read(offset, buf, 6);
+
+	return cl_eeprom_read(offset, buf, 6);
 }
 
 /*
- * Routine: cm_t3x_eeprom_get_board_rev
+ * Routine: cl_eeprom_get_board_rev
  * Description: read system revision from eeprom
  */
-u32 cm_t3x_eeprom_get_board_rev(void)
+u32 cl_eeprom_get_board_rev(void)
 {
 	u32 rev = 0;
 	char str[5]; /* Legacy representation can contain at most 4 digits */
 	uint offset = BOARD_REV_OFFSET_LEGACY;
 
-	if (eeprom_setup_layout())
+	if (cl_eeprom_setup_layout())
 		return 0;
 
-	if (eeprom_layout != LAYOUT_LEGACY)
+	if (cl_eeprom_layout != LAYOUT_LEGACY)
 		offset = BOARD_REV_OFFSET;
 
-	if (cm_t3x_eeprom_read(offset, (uchar *)&rev, BOARD_REV_SIZE))
+	if (cl_eeprom_read(offset, (uchar *)&rev, BOARD_REV_SIZE))
 		return 0;
 
 	/*
 	 * Convert legacy syntactic representation to semantic
 	 * representation. i.e. for rev 1.00: 0x100 --> 0x64
 	 */
-	if (eeprom_layout == LAYOUT_LEGACY) {
+	if (cl_eeprom_layout == LAYOUT_LEGACY) {
 		sprintf(str, "%x", rev);
 		rev = simple_strtoul(str, NULL, 10);
 	}

board/compulab/common/eeprom.h

@@ -11,14 +11,14 @@
 #define _EEPROM_
 
 #ifdef CONFIG_DRIVER_OMAP34XX_I2C
-int cm_t3x_eeprom_read_mac_addr(uchar *buf);
-u32 cm_t3x_eeprom_get_board_rev(void);
+int cl_eeprom_read_mac_addr(uchar *buf);
+u32 cl_eeprom_get_board_rev(void);
 #else
-static inline int cm_t3x_eeprom_read_mac_addr(uchar *buf)
+static inline int cl_eeprom_read_mac_addr(uchar *buf)
 {
 	return 1;
 }
-static inline u32 cm_t3x_eeprom_get_board_rev(void)
+static inline u32 cl_eeprom_get_board_rev(void)
 {
 	return 0;
 }