From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756661AbaEAKHe (ORCPT ); Thu, 1 May 2014 06:07:34 -0400 Received: from mail-wi0-f176.google.com ([209.85.212.176]:55646 "EHLO mail-wi0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755631AbaEAJ5m (ORCPT ); Thu, 1 May 2014 05:57:42 -0400 From: Lee Jones To: linux-kernel@vger.kernel.org Cc: computersforpeace@gmail.com, linux-mtd@lists.infradead.org, kernel@stlinux.com, Lee Jones Subject: [PATCH 17/47] mtd: nand: stm_nand_bch: derive some working variables for latter use Date: Thu, 1 May 2014 10:56:24 +0100 Message-Id: <1398938214-17847-18-git-send-email-lee.jones@linaro.org> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1398938214-17847-1-git-send-email-lee.jones@linaro.org> References: <1398938214-17847-1-git-send-email-lee.jones@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org A few of the working variables can either be taken or derived from existing knowledge about the connected chip. Rather than attempt to provide each specification manually, here we make assumptions based on information already obtained. Signed-off-by: Lee Jones --- drivers/mtd/nand/stm_nand_bch.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/mtd/nand/stm_nand_bch.c b/drivers/mtd/nand/stm_nand_bch.c index a1c25d0..8302273 100644 --- a/drivers/mtd/nand/stm_nand_bch.c +++ b/drivers/mtd/nand/stm_nand_bch.c @@ -930,6 +930,15 @@ static int stm_nand_bch_probe(struct platform_device *pdev) return -EINVAL; } + /* Derive some working variables */ + nandi->sectors_per_page = mtd->writesize / NANDI_BCH_SECTOR_SIZE; + nandi->blocks_per_device = mtd->size >> chip->phys_erase_shift; + nandi->page_shift = chip->page_shift; + nandi->block_shift = chip->phys_erase_shift; + nandi->extra_addr = ((chip->chipsize >> nandi->page_shift) > + 0x10000) ? true : false; + mtd->writebufsize = mtd->writesize; + return 0; } -- 1.8.3.2