Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932646Ab3CGKw0 (ORCPT ); Thu, 7 Mar 2013 05:52:26 -0500 Received: from [213.199.154.208] ([213.199.154.208]:43747 "EHLO am1outboundpool.messaging.microsoft.com" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S932607Ab3CGKwX (ORCPT ); Thu, 7 Mar 2013 05:52:23 -0500 X-Forefront-Antispam-Report: CIP:70.37.183.190;KIP:(null);UIP:(null);IPV:NLI;H:mail.freescale.net;RD:none;EFVD:NLI X-SpamScore: 6 X-BigFish: VS6(z3121kzzz1f42h1ee6h1de0h1202h1e76h1d1ah1d2ah1082kzz8275bhz2dh2a8h668h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1155h) From: Huang Shijie To: CC: , , , , Huang Shijie Subject: [PATCH V4 1/3] mtd: add new fields to nand_flash_dev{} Date: Thu, 7 Mar 2013 18:49:22 +0800 Message-ID: <1362653364-29993-2-git-send-email-b32955@freescale.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1362653364-29993-1-git-send-email-b32955@freescale.com> References: <1362653364-29993-1-git-send-email-b32955@freescale.com> MIME-Version: 1.0 Content-Type: text/plain X-OriginatorOrg: freescale.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1753 Lines: 54 As time goes on, we begin to meet the situation that we can not get enough information from some nand chips's id data. Take some Toshiba's nand chips for example. I have 4 Toshiba's nand chips in my hand: TC58NVG2S0F, TC58NVG3S0F, TC58NVG5D2, TC58NVG6D2 When we read these chips' datasheets, we will get the geometry of these chips: TC58NVG2S0F : 4096 + 224 TC58NVG3S0F : 4096 + 232 TC58NVG5D2 : 8192 + 640 TC58NVG6D2 : 8192 + 640 But we can not parse out the correct oob size for these chips from the id data. This patch adds some new fields to the nand_flash_dev{}: @id_len: the valid length of the id data. See the comments in nand_id_has_period() @oobsize: the oob size. Signed-off-by: Huang Shijie --- include/linux/mtd/nand.h | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 591eeeb..f0a9d93 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -578,6 +578,8 @@ struct nand_chip { * @erasesize: eraseblock size in bytes (determined from the extended ID if 0) * @chipsize: total chip size in MiB * @options: stores various chip bit options + * @id_len: The valid length of the @id. + * @oobsize: OOB size */ struct nand_flash_dev { char *name; @@ -592,6 +594,8 @@ struct nand_flash_dev { unsigned long chipsize; unsigned long erasesize; unsigned long options; + unsigned long id_len; + unsigned long oobsize; }; /** -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/