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authorSascha Hauer <s.hauer@pengutronix.de>2009-06-04 17:25:53 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2009-11-12 08:32:46 +0100
commitc5d23f1bf384e4a17bc4a014313a4157c015a820 (patch)
tree89b17628f221e5057875fc4eb42cf91e9323ccdc /drivers/mtd/nand/mxc_nand.c
parent89121a6bfecf4bd81b360fa1b3ae8875ed3e4a71 (diff)
mxc nand: modify send_page to send all pages, not only one
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/mtd/nand/mxc_nand.c')
-rw-r--r--drivers/mtd/nand/mxc_nand.c45
1 files changed, 20 insertions, 25 deletions
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index 67ddc35ca7b..1131ad126fd 100644
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -228,16 +228,25 @@ 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, uint8_t buf_id,
- unsigned int ops)
+static void send_page(struct mxc_nand_host *host, unsigned int ops)
{
- /* NANDFC buffer 0 is used for page read/write */
- writew(buf_id, host->regs + NFC_BUF_ADDR);
+ int bufs, i;
- writew(ops, host->regs + NFC_CONFIG2);
+ if (host->pagesize_2k)
+ bufs = 4;
+ else
+ bufs = 1;
- /* Wait for operation to complete */
- wait_op_done(host, TROP_US_DELAY, true);
+ for (i = 0; i < bufs; i++) {
+
+ /* NANDFC buffer 0 is used for page read/write */
+ writew(i, host->regs + NFC_BUF_ADDR);
+
+ writew(ops, host->regs + NFC_CONFIG2);
+
+ /* Wait for operation to complete */
+ wait_op_done(host, TROP_US_DELAY, true);
+ }
}
/* Request the NANDFC to perform a read of the NAND device ID. */
@@ -565,16 +574,10 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command,
send_cmd(host, command, false);
mxc_do_addr_cycle(mtd, column, page_addr);
- if (host->pagesize_2k) {
- /* send read confirm command */
+ if (host->pagesize_2k)
send_cmd(host, NAND_CMD_READSTART, true);
- /* read for each AREA */
- send_page(host, 0, NFC_OUTPUT);
- send_page(host, 1, NFC_OUTPUT);
- send_page(host, 2, NFC_OUTPUT);
- send_page(host, 3, NFC_OUTPUT);
- } else
- send_page(host, 0, NFC_OUTPUT);
+
+ send_page(host, NFC_OUTPUT);
memcpy(host->data_buf, host->regs + MAIN_AREA0, mtd->writesize);
copy_spare(mtd, true);
@@ -614,15 +617,7 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command,
case NAND_CMD_PAGEPROG:
memcpy(host->regs + MAIN_AREA0, host->data_buf, mtd->writesize);
copy_spare(mtd, false);
- send_page(host, 0, NFC_INPUT);
-
- if (host->pagesize_2k) {
- /* data in 4 areas datas */
- send_page(host, 1, NFC_INPUT);
- send_page(host, 2, NFC_INPUT);
- send_page(host, 3, NFC_INPUT);
- }
-
+ send_page(host, NFC_INPUT);
send_cmd(host, command, true);
mxc_do_addr_cycle(mtd, column, page_addr);
break;