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From aeeb6ea6eb18c46f5776dd068989686686cda359 Mon Sep 17 00:00:00 2001
From: Huang Shijie <shijie8@gmail.com>
Date: Fri, 17 May 2013 11:17:28 +0800
Subject: [PATCH 092/203] mtd: add a helper to get the supported features for
ONFI nand
add a helper to get the supported features for ONFI nand.
Also add the neccessary macros.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Reviewed-and-tested-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
---
include/linux/mtd/nand.h | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -202,6 +202,10 @@ typedef enum {
/* Keep gcc happy */
struct nand_chip;
+/* ONFI features */
+#define ONFI_FEATURE_16_BIT_BUS (1 << 0)
+#define ONFI_FEATURE_EXT_PARAM_PAGE (1 << 7)
+
/* ONFI timing mode, used in both asynchronous and synchronous mode */
#define ONFI_TIMING_MODE_0 (1 << 0)
#define ONFI_TIMING_MODE_1 (1 << 1)
@@ -754,6 +758,12 @@ struct platform_nand_chip *get_platform_
return chip->priv;
}
+/* return the supported features. */
+static inline int onfi_feature(struct nand_chip *chip)
+{
+ return chip->onfi_version ? le16_to_cpu(chip->onfi_params.features) : 0;
+}
+
/* return the supported asynchronous timing mode. */
static inline int onfi_get_async_timing_mode(struct nand_chip *chip)
{
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