From: Huang Shijie <b32955@freescale.com>
To: <dwmw2@infradead.org>
Cc: <dedekind1@gmail.com>, <computersforpeace@gmail.com>,
<linux-mtd@lists.infradead.org>, <linux-kernel@vger.kernel.org>,
Huang Shijie <shijie8@gmail.com>,
Huang Shijie <b32955@freescale.com>
Subject: [PATCH V4 3/9] mtd: add a helper to get the supported features for ONFI nand
Date: Fri, 26 Apr 2013 17:08:51 +0800 [thread overview]
Message-ID: <1366967337-5534-4-git-send-email-b32955@freescale.com> (raw)
In-Reply-To: <1366967337-5534-1-git-send-email-b32955@freescale.com>
From: Huang Shijie <shijie8@gmail.com>
add a helper to get the supported features for ONFI nand.
Also add the neccessary macros.
Signed-off-by: Huang Shijie <b32955@freescale.com>
---
include/linux/mtd/nand.h | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 9bad296..9b28739 100644
--- 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)
@@ -753,6 +757,12 @@ struct platform_nand_chip *get_platform_nandchip(struct mtd_info *mtd)
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)
{
--
1.7.1
next prev parent reply other threads:[~2013-04-26 9:22 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-26 9:08 [PATCH V4 0/9] mtd: add datasheet's ECC information to nand_chip{} Huang Shijie
2013-04-26 9:08 ` [PATCH V4 1/9] mtd: add more comment for ecc_strength/ecc_size Huang Shijie
2013-05-15 7:27 ` Artem Bityutskiy
2013-05-15 7:38 ` Huang Shijie
2013-05-15 7:42 ` Artem Bityutskiy
2013-05-15 8:02 ` Huang Shijie
2013-05-15 10:01 ` Artem Bityutskiy
2013-04-26 9:08 ` [PATCH V4 2/9] mtd: add data structures for Extended Parameter Page Huang Shijie
2013-05-02 7:42 ` Gupta, Pekon
2013-04-26 9:08 ` Huang Shijie [this message]
2013-04-26 9:08 ` [PATCH V4 4/9] mtd: get the ECC info from the " Huang Shijie
2013-05-02 7:43 ` Gupta, Pekon
2013-05-02 23:39 ` Brian Norris
2013-05-03 2:52 ` Huang Shijie
2013-04-26 9:08 ` [PATCH V4 5/9] mtd: replace the hardcode with the onfi_feature() Huang Shijie
2013-04-30 10:04 ` Gupta, Pekon
2013-05-02 2:14 ` Huang Shijie
2013-05-02 5:42 ` Gupta, Pekon
2013-05-02 6:01 ` Huang Shijie
2013-05-02 6:17 ` Gupta, Pekon
2013-05-02 6:48 ` Huang Shijie
2013-05-02 21:24 ` Brian Norris
2013-04-26 9:08 ` [PATCH V4 6/9] mtd: add ECC info for nand_flash_dev{} Huang Shijie
2013-04-26 9:08 ` [PATCH V4 7/9] mtd: parse out the ECC info for the full-id nand chips Huang Shijie
2013-04-26 9:08 ` [PATCH V4 8/9] mtd: add the ecc info for some " Huang Shijie
2013-04-26 9:08 ` [PATCH V4 9/9] mtd: gpmi: set the BCH's geometry with the ecc info Huang Shijie
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