From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wi0-f177.google.com ([209.85.212.177]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WSMbd-0007X3-71 for linux-mtd@lists.infradead.org; Tue, 25 Mar 2014 08:21:10 +0000 Received: by mail-wi0-f177.google.com with SMTP id cc10so339978wib.4 for ; Tue, 25 Mar 2014 01:20:48 -0700 (PDT) From: Lee Jones To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [RFC 16/47] mtd: nand: stm_nand_bch: derive some working variables for latter use Date: Tue, 25 Mar 2014 08:19:33 +0000 Message-Id: <1395735604-26706-17-git-send-email-lee.jones@linaro.org> In-Reply-To: <1395735604-26706-1-git-send-email-lee.jones@linaro.org> References: <1395735604-26706-1-git-send-email-lee.jones@linaro.org> Cc: angus.clark@st.com, kernel@stlinux.com, lee.jones@linaro.org, linux-mtd@lists.infradead.org, pekon@ti.com, computersforpeace@gmail.com, dwmw2@infradead.org List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 93fe835..f5a3e80 100644 --- a/drivers/mtd/nand/stm_nand_bch.c +++ b/drivers/mtd/nand/stm_nand_bch.c @@ -783,6 +783,15 @@ 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