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Commit a8459f21 authored by Roman Schneider's avatar Roman Schneider Committed by Artem Bityutskiy
Browse files

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: default avatarRoman Schneider <schneider@at.festo.com>
Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
parent 972e1b7b

drivers/mtd/nand/mxc_nand.c

+11 −0
Original line number Diff line number Diff line
@@ -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. */