From a8459f21ed48fc366ad49ce9828f6bbb1cfac9a9 Mon Sep 17 00:00:00 2001 From: Roman Schneider Date: Tue, 15 Jan 2013 16:56:24 +0100 Subject: [PATCH] mtd: mxc_nand: compress ID info for send_read_id_v3 Also compress the id in case of a v3 NAND flash controller (i.mx51, i.mx53) and 16Bit buswidth. Signed-off-by: Roman Schneider Signed-off-by: Artem Bityutskiy --- drivers/mtd/nand/mxc_nand.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 45204e41a028..20e1241bd099 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -530,12 +530,23 @@ static void send_page_v1(struct mtd_info *mtd, unsigned int ops) static void send_read_id_v3(struct mxc_nand_host *host) { + struct nand_chip *this = &host->nand; + /* Read ID into main buffer */ writel(NFC_ID, NFC_V3_LAUNCH); wait_op_done(host, true); memcpy32_fromio(host->data_buf, host->main_area0, 16); + + if (this->options & NAND_BUSWIDTH_16) { + /* compress the ID info */ + host->data_buf[1] = host->data_buf[2]; + host->data_buf[2] = host->data_buf[4]; + host->data_buf[3] = host->data_buf[6]; + host->data_buf[4] = host->data_buf[8]; + host->data_buf[5] = host->data_buf[10]; + } } /* Request the NANDFC to perform a read of the NAND device ID. */ -- 2.20.1