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