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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>
This commit is contained in:
Ben Gardiner 2010-10-14 17:26:17 -04:00 committed by Wolfgang Denk
parent 1a832dc4f8
commit 10d6ac94e0
1 changed files with 2 additions and 1 deletions
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3
drivers/mtd/nand/davinci_nand.c
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@ -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