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Author SHA1 Message Date
pekon gupta 0439d752c5 mtd: nand: omap_elm: use macros for register definitions 
This patch adds macros for following parameters of ELM Hardware engine
 - ELM_MAX_CHANNELS: ELM can process 8 data streams simultaneously
 - ELM_MAX_ERRORS: ELM can detect upto 16 ECC error when using BCH16 scheme

Signed-off-by: Pekon Gupta <pekon@ti.com>
Reviewed-by: Stefan Roese <sr@denx.de>
 2014-06-06 17:45:50 -04:00
pekon gupta 41bbe4dd49 mtd: nand: omap_elm: use bch_type instead of nibble count to differentiate between BCH4/BCH8/BCH16 
ELM hardware engine support ECC error detection for multiple ECC strengths like
 +------+------------------------+
 |Type  | ECC syndrome length    |
 +------+------------------------+
 |BCH4  | 6.5 bytes = 13 nibbles |
 |BCH8  | 13 byte = 26 nibbles   |
 |BCH16 | 26 bytes = 52 nibbles  |
 +------+------------------------+

Current implementation of omap_elm driver uses ECC syndrom length (in 'nibbles')
to differentiate between BCH4/BCH8/BCH16. This patch replaces it with 'bch_type'

Signed-off-by: Pekon Gupta <pekon@ti.com>
Reviewed-by: Stefan Roese <sr@denx.de>
 2014-06-06 17:45:48 -04:00
pekon gupta 2eda892f00 mtd: nand: omap: move omap_elm.h from arch/arm/include/asm to drivers/mtd/nand 
omap_elm.h is a generic header used by OMAP ELM driver for all TI platfoms.
Hence this file should be present in generic folder instead of architecture
specific include folder.
Build tested using: ./MAKEALL -s am33xx -s omap3 -s omap4 -s omap5

Signed-off-by: Pekon Gupta <pekon@ti.com>
 2014-03-04 17:23:54 -06:00