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Commit 2d69c7fa authored by Sascha Hauer's avatar Sascha Hauer
Browse files

mxc_nand: Get rid of pagesize_2k flag 



Later versions of this controller also allow 4k pagesize,
so use mtd->writesize instead of a flag.

Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent c6de7e1b

drivers/mtd/nand/mxc_nand.c

+14 −15
Original line number Diff line number Diff line
@@ -101,7 +101,6 @@ struct mxc_nand_host { 
	void __iomem		*base;

	void __iomem		*regs;

	int			status_request;

	int			pagesize_2k;

	struct clk		*clk;

	int			clk_act;

	int			irq;
@@ -214,11 +213,13 @@ static void send_addr(struct mxc_nand_host *host, uint16_t addr, int islast) 
	wait_op_done(host, TROP_US_DELAY, islast);

}



static void send_page(struct mxc_nand_host *host, unsigned int ops)

static void send_page(struct mtd_info *mtd, unsigned int ops)

{

	struct nand_chip *nand_chip = mtd->priv;

	struct mxc_nand_host *host = nand_chip->priv;

	int bufs, i;



	if (host->pagesize_2k)

	if (mtd->writesize > 512)

		bufs = 4;

	else

		bufs = 1;
@@ -490,7 +491,7 @@ static void mxc_do_addr_cycle(struct mtd_info *mtd, int column, int page_addr) 
		 * the full page.

		 */

		send_addr(host, 0, page_addr == -1);

		if (host->pagesize_2k)

		if (mtd->writesize > 512)

			/* another col addr cycle for 2k page */

			send_addr(host, 0, false);

	}
@@ -500,7 +501,7 @@ static void mxc_do_addr_cycle(struct mtd_info *mtd, int column, int page_addr) 
		/* paddr_0 - p_addr_7 */

		send_addr(host, (page_addr & 0xff), false);



		if (host->pagesize_2k) {

		if (mtd->writesize > 512) {

			if (mtd->size >= 0x10000000) {

				/* paddr_8 - paddr_15 */

				send_addr(host, (page_addr >> 8) & 0xff, false);
@@ -554,16 +555,16 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, 
		else

			host->buf_start = column + mtd->writesize;



		if (host->pagesize_2k)

		if (mtd->writesize > 512)

			command = NAND_CMD_READ0; /* only READ0 is valid */



		send_cmd(host, command, false);

		mxc_do_addr_cycle(mtd, column, page_addr);



		if (host->pagesize_2k)

		if (mtd->writesize > 512)

			send_cmd(host, NAND_CMD_READSTART, true);



		send_page(host, NFC_OUTPUT);

		send_page(mtd, NFC_OUTPUT);



		memcpy(host->data_buf, host->main_area0, mtd->writesize);

		copy_spare(mtd, true);
@@ -578,7 +579,7 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, 
			 * pointer to spare area, we must write the whole page

			 * including OOB together.

			 */

			if (host->pagesize_2k)

			if (mtd->writesize > 512)

				/* call ourself to read a page */

				mxc_nand_command(mtd, NAND_CMD_READ0, 0,

						page_addr);
@@ -586,13 +587,13 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, 
			host->buf_start = column;



			/* Set program pointer to spare region */

			if (!host->pagesize_2k)

			if (mtd->writesize == 512)

				send_cmd(host, NAND_CMD_READOOB, false);

		} else {

			host->buf_start = column;



			/* Set program pointer to page start */

			if (!host->pagesize_2k)

			if (mtd->writesize == 512)

				send_cmd(host, NAND_CMD_READ0, false);

		}
@@ -603,7 +604,7 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, 
	case NAND_CMD_PAGEPROG:

		memcpy(host->main_area0, host->data_buf, mtd->writesize);

		copy_spare(mtd, false);

		send_page(host, NFC_INPUT);

		send_page(mtd, NFC_INPUT);

		send_cmd(host, command, true);

		mxc_do_addr_cycle(mtd, column, page_addr);

		break;
@@ -745,10 +746,8 @@ static int __init mxcnd_probe(struct platform_device *pdev) 
		goto escan;

	}



	if (mtd->writesize == 2048) {

		host->pagesize_2k = 1;

	if (mtd->writesize == 2048)

		this->ecc.layout = &nand_hw_eccoob_largepage;

	}



	/* second phase scan */

	if (nand_scan_tail(mtd)) {