davinci_nand, trivial : use symbolic ECC start command

The ECC calculations were started by writing 1 << 13 to the nand FCR register;
that value is also defined as DAVINCI_NANDFCR_4BIT_CALC_START in emif_defs.h.

This patch substitutes the macro DAVINCI_NANDFCR_4BIT_CALC_START for the
magic number '1 << 13'.

Signed-off-by: Ben Gardiner <bengardiner@nanometrics.ca>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c
index c5a86d6..d41579c 100644 (file)
--- a/drivers/mtd/nand/davinci_nand.c
+++ b/drivers/mtd/nand/davinci_nand.c
@@ -481,7 +481,8 @@ static int nand_davinci_4bit_correct_data(struct mtd_info *mtd, uint8_t *dat,
         * Set the addr_calc_st bit(bit no 13) in the NAND Flash Control
         * register to 1.
         */
-       __raw_writel(1 << 13, &davinci_emif_regs->nandfcr);
+       __raw_writel(DAVINCI_NANDFCR_4BIT_CALC_START,
+                       &davinci_emif_regs->nandfcr);
 
        /*
         * Wait for the corr_state field (bits 8 to 11) in the