9 files changed, 39 insertions, 54 deletions

diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index 2d299bf5d72f..8cbc3aae6c64 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -3,9 +3,6 @@ if ARCH_AT91
 config HAVE_AT91_DATAFLASH_CARD
         bool
 
-config HAVE_NAND_ATMEL_BUSWIDTH_16
-        bool
-
 config HAVE_AT91_USART3
         bool
 
@@ -209,7 +206,6 @@ comment "AT91SAM9260 / AT91SAM9XE Board Type"
 config MACH_AT91SAM9260EK
         bool "Atmel AT91SAM9260-EK / AT91SAM9XE Evaluation Kit"
         select HAVE_AT91_DATAFLASH_CARD
-        select HAVE_NAND_ATMEL_BUSWIDTH_16
         help
           Select this if you are using Atmel's AT91SAM9260-EK or AT91SAM9XE Evaluation Kit
           <http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3933>
@@ -270,7 +266,6 @@ comment "AT91SAM9261 Board Type"
 config MACH_AT91SAM9261EK
         bool "Atmel AT91SAM9261-EK Evaluation Kit"
         select HAVE_AT91_DATAFLASH_CARD
-        select HAVE_NAND_ATMEL_BUSWIDTH_16
         help
           Select this if you are using Atmel's AT91SAM9261-EK Evaluation Kit.
           <http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3820>
@@ -286,7 +281,6 @@ comment "AT91SAM9G10 Board Type"
 config MACH_AT91SAM9G10EK
         bool "Atmel AT91SAM9G10-EK Evaluation Kit"
         select HAVE_AT91_DATAFLASH_CARD
-        select HAVE_NAND_ATMEL_BUSWIDTH_16
         help
           Select this if you are using Atmel's AT91SAM9G10-EK Evaluation Kit.
           <http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4588>
@@ -302,7 +296,6 @@ comment "AT91SAM9263 Board Type"
 config MACH_AT91SAM9263EK
         bool "Atmel AT91SAM9263-EK Evaluation Kit"
         select HAVE_AT91_DATAFLASH_CARD
-        select HAVE_NAND_ATMEL_BUSWIDTH_16
         help
           Select this if you are using Atmel's AT91SAM9263-EK Evaluation Kit.
           <http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4057>
@@ -343,7 +336,6 @@ comment "AT91SAM9G20 Board Type"
 config MACH_AT91SAM9G20EK
         bool "Atmel AT91SAM9G20-EK Evaluation Kit"
         select HAVE_AT91_DATAFLASH_CARD
-        select HAVE_NAND_ATMEL_BUSWIDTH_16
         help
           Select this if you are using Atmel's AT91SAM9G20-EK Evaluation Kit
           that embeds only one SD/MMC slot.
@@ -351,7 +343,6 @@ config MACH_AT91SAM9G20EK
 config MACH_AT91SAM9G20EK_2MMC
         depends on MACH_AT91SAM9G20EK
         bool "Atmel AT91SAM9G20-EK Evaluation Kit with 2 SD/MMC Slots"
-        select HAVE_NAND_ATMEL_BUSWIDTH_16
         help
           Select this if you are using an Atmel AT91SAM9G20-EK Evaluation Kit
           with 2 SD/MMC Slots. This is the case for AT91SAM9G20-EK rev. C and
@@ -416,7 +407,6 @@ comment "AT91SAM9G45 Board Type"
 
 config MACH_AT91SAM9M10G45EK
         bool "Atmel AT91SAM9M10G45-EK Evaluation Kits"
-        select HAVE_NAND_ATMEL_BUSWIDTH_16
         help
           Select this if you are using Atmel's AT91SAM9G45-EKES Evaluation Kit.
           "ES" at the end of the name means that this board is an
@@ -433,7 +423,6 @@ comment "AT91CAP9 Board Type"
 config MACH_AT91CAP9ADK
         bool "Atmel AT91CAP9A-DK Evaluation Kit"
         select HAVE_AT91_DATAFLASH_CARD
-        select HAVE_NAND_ATMEL_BUSWIDTH_16
         help
           Select this if you are using Atmel's AT91CAP9A-DK Evaluation Kit.
           <http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4138>
@@ -450,7 +439,6 @@ config MACH_AT572D940HFEB
         bool "AT572D940HF-EK"
         depends on ARCH_AT572D940HF
         select HAVE_AT91_DATAFLASH_CARD
-        select HAVE_NAND_ATMEL_BUSWIDTH_16
         help
           Select this if you are using Atmel's AT572D940HF-EK evaluation kit.
           <http://www.atmel.com/products/diopsis/default.asp>
@@ -483,13 +471,6 @@ config MTD_AT91_DATAFLASH_CARD
         help
           Enable support for the DataFlash card.
 
-config MTD_NAND_ATMEL_BUSWIDTH_16
-        bool "Enable 16-bit data bus interface to NAND flash"
-        depends on HAVE_NAND_ATMEL_BUSWIDTH_16
-        help
-          On AT91SAM926x boards both types of NAND flash can be present
-          (8 and 16 bit data bus width).
-
 # ----------------------------------------------------------
 
 comment "AT91 Feature Selections"
diff --git a/arch/arm/mach-at91/board-at572d940hf_ek.c b/arch/arm/mach-at91/board-at572d940hf_ek.c
index 3929f1c9e4e5..096b99f4b1f3 100644
--- a/arch/arm/mach-at91/board-at572d940hf_ek.c
+++ b/arch/arm/mach-at91/board-at572d940hf_ek.c
@@ -41,6 +41,7 @@
 #include <mach/board.h>
 #include <mach/gpio.h>
 #include <mach/at91sam9_smc.h>
+#include <mach/system_rev.h>
 
 #include "sam9_smc.h"
 #include "generic.h"
@@ -216,11 +217,6 @@ static struct atmel_nand_data __initdata eb_nand_data = {
 /*      .rdy_pin        = AT91_PIN_PC16, */
         .enable_pin     = AT91_PIN_PA15,
         .partition_info = nand_partitions,
-#if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
-        .bus_width_16   = 1,
-#else
-        .bus_width_16   = 0,
-#endif
 };
 
 static struct sam9_smc_config __initdata eb_nand_smc_config = {
@@ -243,6 +239,7 @@ static struct sam9_smc_config __initdata eb_nand_smc_config = {
 
 static void __init eb_add_device_nand(void)
 {
+        ek_nand_data.bus_width_16 = !board_have_nand_8bit();
         /* setup bus-width (8 or 16) */
         if (eb_nand_data.bus_width_16)
                 eb_nand_smc_config.mode |= AT91_SMC_DBW_16;
diff --git a/arch/arm/mach-at91/board-cap9adk.c b/arch/arm/mach-at91/board-cap9adk.c
index e7274440ead9..96010d4e15af 100644
--- a/arch/arm/mach-at91/board-cap9adk.c
+++ b/arch/arm/mach-at91/board-cap9adk.c
@@ -44,6 +44,7 @@
 #include <mach/gpio.h>
 #include <mach/at91cap9_matrix.h>
 #include <mach/at91sam9_smc.h>
+#include <mach/system_rev.h>
 
 #include "sam9_smc.h"
 #include "generic.h"
@@ -187,11 +188,6 @@ static struct atmel_nand_data __initdata cap9adk_nand_data = {
 //      .rdy_pin        = ... not connected
         .enable_pin     = AT91_PIN_PD15,
         .partition_info = nand_partitions,
-#if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
-        .bus_width_16   = 1,
-#else
-        .bus_width_16   = 0,
-#endif
 };
 
 static struct sam9_smc_config __initdata cap9adk_nand_smc_config = {
@@ -219,6 +215,7 @@ static void __init cap9adk_add_device_nand(void)
         csa = at91_sys_read(AT91_MATRIX_EBICSA);
         at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
 
+        cap9adk_nand_data.bus_width_16 = !board_have_nand_8bit();
         /* setup bus-width (8 or 16) */
         if (cap9adk_nand_data.bus_width_16)
                 cap9adk_nand_smc_config.mode |= AT91_SMC_DBW_16;
diff --git a/arch/arm/mach-at91/board-sam9260ek.c b/arch/arm/mach-at91/board-sam9260ek.c
index de1816e0e1d9..fdfa144cbe76 100644
--- a/arch/arm/mach-at91/board-sam9260ek.c
+++ b/arch/arm/mach-at91/board-sam9260ek.c
@@ -44,6 +44,7 @@
 #include <mach/gpio.h>
 #include <mach/at91sam9_smc.h>
 #include <mach/at91_shdwc.h>
+#include <mach/system_rev.h>
 
 #include "sam9_smc.h"
 #include "generic.h"
@@ -191,11 +192,6 @@ static struct atmel_nand_data __initdata ek_nand_data = {
         .rdy_pin        = AT91_PIN_PC13,
         .enable_pin     = AT91_PIN_PC14,
         .partition_info = nand_partitions,
-#if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
-        .bus_width_16   = 1,
-#else
-        .bus_width_16   = 0,
-#endif
 };
 
 static struct sam9_smc_config __initdata ek_nand_smc_config = {
@@ -218,6 +214,7 @@ static struct sam9_smc_config __initdata ek_nand_smc_config = {
 
 static void __init ek_add_device_nand(void)
 {
+        ek_nand_data.bus_width_16 = !board_have_nand_8bit();
         /* setup bus-width (8 or 16) */
         if (ek_nand_data.bus_width_16)
                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
diff --git a/arch/arm/mach-at91/board-sam9261ek.c b/arch/arm/mach-at91/board-sam9261ek.c
index 14acc901e24c..c2773b5f2eee 100644
--- a/arch/arm/mach-at91/board-sam9261ek.c
+++ b/arch/arm/mach-at91/board-sam9261ek.c
@@ -48,6 +48,7 @@
 #include <mach/gpio.h>
 #include <mach/at91sam9_smc.h>
 #include <mach/at91_shdwc.h>
+#include <mach/system_rev.h>
 
 #include "sam9_smc.h"
 #include "generic.h"
@@ -197,11 +198,6 @@ static struct atmel_nand_data __initdata ek_nand_data = {
         .rdy_pin        = AT91_PIN_PC15,
         .enable_pin     = AT91_PIN_PC14,
         .partition_info = nand_partitions,
-#if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
-        .bus_width_16   = 1,
-#else
-        .bus_width_16   = 0,
-#endif
 };
 
 static struct sam9_smc_config __initdata ek_nand_smc_config = {
@@ -224,6 +220,7 @@ static struct sam9_smc_config __initdata ek_nand_smc_config = {
 
 static void __init ek_add_device_nand(void)
 {
+        ek_nand_data.bus_width_16 = !board_have_nand_8bit();
         /* setup bus-width (8 or 16) */
         if (ek_nand_data.bus_width_16)
                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
diff --git a/arch/arm/mach-at91/board-sam9263ek.c b/arch/arm/mach-at91/board-sam9263ek.c
index bfe490df58be..1dabc0ae56c9 100644
--- a/arch/arm/mach-at91/board-sam9263ek.c
+++ b/arch/arm/mach-at91/board-sam9263ek.c
@@ -47,6 +47,7 @@
 #include <mach/gpio.h>
 #include <mach/at91sam9_smc.h>
 #include <mach/at91_shdwc.h>
+#include <mach/system_rev.h>
 
 #include "sam9_smc.h"
 #include "generic.h"
@@ -198,11 +199,6 @@ static struct atmel_nand_data __initdata ek_nand_data = {
         .rdy_pin        = AT91_PIN_PA22,
         .enable_pin     = AT91_PIN_PD15,
         .partition_info = nand_partitions,
-#if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
-        .bus_width_16   = 1,
-#else
-        .bus_width_16   = 0,
-#endif
 };
 
 static struct sam9_smc_config __initdata ek_nand_smc_config = {
@@ -225,6 +221,7 @@ static struct sam9_smc_config __initdata ek_nand_smc_config = {
 
 static void __init ek_add_device_nand(void)
 {
+        ek_nand_data.bus_width_16 = !board_have_nand_8bit();
         /* setup bus-width (8 or 16) */
         if (ek_nand_data.bus_width_16)
                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
diff --git a/arch/arm/mach-at91/board-sam9g20ek.c b/arch/arm/mach-at91/board-sam9g20ek.c
index ca8198b3c168..d13acd5c92f2 100644
--- a/arch/arm/mach-at91/board-sam9g20ek.c
+++ b/arch/arm/mach-at91/board-sam9g20ek.c
@@ -43,6 +43,7 @@
 #include <mach/board.h>
 #include <mach/gpio.h>
 #include <mach/at91sam9_smc.h>
+#include <mach/system_rev.h>
 
 #include "sam9_smc.h"
 #include "generic.h"
@@ -175,11 +176,6 @@ static struct atmel_nand_data __initdata ek_nand_data = {
         .rdy_pin        = AT91_PIN_PC13,
         .enable_pin     = AT91_PIN_PC14,
         .partition_info = nand_partitions,
-#if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
-        .bus_width_16   = 1,
-#else
-        .bus_width_16   = 0,
-#endif
 };
 
 static struct sam9_smc_config __initdata ek_nand_smc_config = {
@@ -202,6 +198,7 @@ static struct sam9_smc_config __initdata ek_nand_smc_config = {
 
 static void __init ek_add_device_nand(void)
 {
+        ek_nand_data.bus_width_16 = !board_have_nand_8bit();
         /* setup bus-width (8 or 16) */
         if (ek_nand_data.bus_width_16)
                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
diff --git a/arch/arm/mach-at91/board-sam9m10g45ek.c b/arch/arm/mach-at91/board-sam9m10g45ek.c
index 6c999dbd2bcf..49d6849f0ccb 100644
--- a/arch/arm/mach-at91/board-sam9m10g45ek.c
+++ b/arch/arm/mach-at91/board-sam9m10g45ek.c
@@ -41,6 +41,7 @@
 #include <mach/gpio.h>
 #include <mach/at91sam9_smc.h>
 #include <mach/at91_shdwc.h>
+#include <mach/system_rev.h>
 
 #include "sam9_smc.h"
 #include "generic.h"
@@ -155,11 +156,6 @@ static struct atmel_nand_data __initdata ek_nand_data = {
         .rdy_pin        = AT91_PIN_PC8,
         .enable_pin     = AT91_PIN_PC14,
         .partition_info = nand_partitions,
-#if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
-        .bus_width_16   = 1,
-#else
-        .bus_width_16   = 0,
-#endif
 };
 
 static struct sam9_smc_config __initdata ek_nand_smc_config = {
@@ -182,6 +178,7 @@ static struct sam9_smc_config __initdata ek_nand_smc_config = {
 
 static void __init ek_add_device_nand(void)
 {
+        ek_nand_data.bus_width_16 = !board_have_nand_8bit();
         /* setup bus-width (8 or 16) */
         if (ek_nand_data.bus_width_16)
                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
diff --git a/arch/arm/mach-at91/include/mach/system_rev.h b/arch/arm/mach-at91/include/mach/system_rev.h
new file mode 100644
index 000000000000..b855ee75f72c
--- /dev/null
+++ b/arch/arm/mach-at91/include/mach/system_rev.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * Under GPLv2 only
+ */
+
+#ifndef __ARCH_SYSTEM_REV_H__
+#define __ARCH_SYSTEM_REV_H__
+
+/*
+ * board revision encoding
+ * mach specific
+ * the 16-31 bit are reserved for at91 generic information
+ *
+ * bit 31:
+ *      0 => nand 16 bit
+ *      1 => nand 8 bit
+ */
+#define BOARD_HAVE_NAND_8BIT    (1 << 31)
+static int inline board_have_nand_8bit(void)
+{
+        return system_rev & BOARD_HAVE_NAND_8BIT;
+}
+
+#endif /* __ARCH_SYSTEM_REV_H__ */