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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2009-06-04 17:25:53 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2009-11-12 08:32:46 +0100 |
| commit | c5d23f1bf384e4a17bc4a014313a4157c015a820 (patch) | |
| tree | 89b17628f221e5057875fc4eb42cf91e9323ccdc /drivers/mtd | |
| parent | mxc nand: simplify command processing (diff) | |
| download | linux-c5d23f1bf384e4a17bc4a014313a4157c015a820.tar.xz linux-c5d23f1bf384e4a17bc4a014313a4157c015a820.zip | |
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')
| -rw-r--r-- | drivers/mtd/nand/mxc_nand.c | 45 |
1 files changed, 20 insertions, 25 deletions
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 67ddc35ca7bc..1131ad126fd2 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; |