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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2009-10-05 17:18:42 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2009-11-12 08:33:25 +0100 |
| commit | f06368f7d15f6fc323ba0c71aec67b9b2dd5614a (patch) | |
| tree | 4617c5685c41d4d96ec1a0470feed931a68ed04c /drivers | |
| parent | mxc_nand: Add NFC V2 support (diff) | |
| download | linux-f06368f7d15f6fc323ba0c71aec67b9b2dd5614a.tar.xz linux-f06368f7d15f6fc323ba0c71aec67b9b2dd5614a.zip | |
mxc_nand: disable sp_en bit only once
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/nand/mxc_nand.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 4a696820d6d4..2e3f3fbcd67c 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -274,16 +274,10 @@ static void send_page(struct mtd_info *mtd, unsigned int ops) static void send_read_id(struct mxc_nand_host *host) { struct nand_chip *this = &host->nand; - uint16_t tmp; /* NANDFC buffer 0 is used for device ID output */ writew(0x0, host->regs + NFC_BUF_ADDR); - /* Read ID into main buffer */ - tmp = readw(host->regs + NFC_CONFIG1); - tmp &= ~NFC_SP_EN; - writew(tmp, host->regs + NFC_CONFIG1); - writew(NFC_ID, host->regs + NFC_CONFIG2); /* Wait for operation to complete */ @@ -307,7 +301,7 @@ static uint16_t get_dev_status(struct mxc_nand_host *host) { void __iomem *main_buf = host->main_area1; uint32_t store; - uint16_t ret, tmp; + uint16_t ret; /* Issue status request to NAND device */ /* store the main area1 first word, later do recovery */ @@ -316,11 +310,6 @@ static uint16_t get_dev_status(struct mxc_nand_host *host) * corruption of read/write buffer on status requests. */ writew(1, host->regs + NFC_BUF_ADDR); - /* Read status into main buffer */ - tmp = readw(host->regs + NFC_CONFIG1); - tmp &= ~NFC_SP_EN; - writew(tmp, host->regs + NFC_CONFIG1); - writew(NFC_STATUS, host->regs + NFC_CONFIG2); /* Wait for operation to complete */ @@ -739,8 +728,10 @@ static int __init mxcnd_probe(struct platform_device *pdev) } else BUG(); + /* disable interrupt and spare enable */ tmp = readw(host->regs + NFC_CONFIG1); tmp |= NFC_INT_MSK; + tmp &= ~NFC_SP_EN; writew(tmp, host->regs + NFC_CONFIG1); init_waitqueue_head(&host->irq_waitq); |