From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from va3outboundpool.messaging.microsoft.com (va3ehsobe003.messaging.microsoft.com [216.32.180.13]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (Client CN "mail.global.frontbridge.com", Issuer "Microsoft Secure Server Authority" (not verified)) by ozlabs.org (Postfix) with ESMTPS id 7D07DB702A for ; Mon, 9 Apr 2012 15:25:45 +1000 (EST) From: Prabhakar Kushwaha To: , Subject: [PATCH] driver/mtd: IFC NAND: Add support of ONFI NAND flash Date: Mon, 9 Apr 2012 10:55:22 +0530 Message-ID: <1333949122-10401-1-git-send-email-prabhakar@freescale.com> MIME-Version: 1.0 Content-Type: text/plain Cc: scottwood@freescale.com, Prabhakar Kushwaha , dedekind1@gmail.com List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , - Fix NAND_CMD_READID command for ONFI detect. - Add NAND_CMD_PARAM command to read the ONFI parameter page. Signed-off-by: Prabhakar Kushwaha Acked-by: Scott Wood --- Based upon git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git Branch master drivers/mtd/nand/fsl_ifc_nand.c | 22 ++++++++++++++++------ 1 files changed, 16 insertions(+), 6 deletions(-) diff --git a/drivers/mtd/nand/fsl_ifc_nand.c b/drivers/mtd/nand/fsl_ifc_nand.c index c30ac7b..4e7f31e 100644 --- a/drivers/mtd/nand/fsl_ifc_nand.c +++ b/drivers/mtd/nand/fsl_ifc_nand.c @@ -375,21 +375,31 @@ static void fsl_ifc_cmdfunc(struct mtd_info *mtd, unsigned int command, return; - /* READID must read all 8 possible bytes */ case NAND_CMD_READID: + case NAND_CMD_PARAM: { + int timing = IFC_FIR_OP_RB; + if (command == NAND_CMD_PARAM) + timing = IFC_FIR_OP_RBCD; + out_be32(&ifc->ifc_nand.nand_fir0, (IFC_FIR_OP_CMD0 << IFC_NAND_FIR0_OP0_SHIFT) | (IFC_FIR_OP_UA << IFC_NAND_FIR0_OP1_SHIFT) | - (IFC_FIR_OP_RB << IFC_NAND_FIR0_OP2_SHIFT)); + (timing << IFC_NAND_FIR0_OP2_SHIFT)); out_be32(&ifc->ifc_nand.nand_fcr0, - NAND_CMD_READID << IFC_NAND_FCR0_CMD0_SHIFT); - /* 8 bytes for manuf, device and exts */ - out_be32(&ifc->ifc_nand.nand_fbcr, 8); - ifc_nand_ctrl->read_bytes = 8; + command << IFC_NAND_FCR0_CMD0_SHIFT); + out_be32(&ifc->ifc_nand.row3, column); + + /* + * although currently it's 8 bytes for READID, we always read + * the maximum 256 bytes(for PARAM) + */ + out_be32(&ifc->ifc_nand.nand_fbcr, 256); + ifc_nand_ctrl->read_bytes = 256; set_addr(mtd, 0, 0, 0); fsl_ifc_run_command(mtd); return; + } /* ERASE1 stores the block and page address */ case NAND_CMD_ERASE1: -- 1.7.5.4