diff options
Diffstat (limited to 'drivers/mtd/nand/mtk_ecc.h')
| -rw-r--r-- | drivers/mtd/nand/mtk_ecc.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/mtd/nand/mtk_ecc.h b/drivers/mtd/nand/mtk_ecc.h new file mode 100644 index 000000000000..cbeba5cd1c13 --- /dev/null +++ b/drivers/mtd/nand/mtk_ecc.h @@ -0,0 +1,50 @@ +/* + * MTK SDG1 ECC controller + * + * Copyright (c) 2016 Mediatek + * Authors: Xiaolei Li <xiaolei.li@mediatek.com> + * Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org> + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#ifndef __DRIVERS_MTD_NAND_MTK_ECC_H__ +#define __DRIVERS_MTD_NAND_MTK_ECC_H__ + +#include <linux/types.h> + +#define ECC_PARITY_BITS (14) + +enum mtk_ecc_mode {ECC_DMA_MODE = 0, ECC_NFI_MODE = 1}; +enum mtk_ecc_operation {ECC_ENCODE, ECC_DECODE}; + +struct device_node; +struct mtk_ecc; + +struct mtk_ecc_stats { + u32 corrected; + u32 bitflips; + u32 failed; +}; + +struct mtk_ecc_config { + enum mtk_ecc_operation op; + enum mtk_ecc_mode mode; + dma_addr_t addr; + u32 strength; + u32 sectors; + u32 len; +}; + +int mtk_ecc_encode(struct mtk_ecc *, struct mtk_ecc_config *, u8 *, u32); +void mtk_ecc_get_stats(struct mtk_ecc *, struct mtk_ecc_stats *, int); +int mtk_ecc_wait_done(struct mtk_ecc *, enum mtk_ecc_operation); +int mtk_ecc_enable(struct mtk_ecc *, struct mtk_ecc_config *); +void mtk_ecc_disable(struct mtk_ecc *); +void mtk_ecc_adjust_strength(u32 *); + +struct mtk_ecc *of_mtk_ecc_get(struct device_node *); +void mtk_ecc_release(struct mtk_ecc *); + +#endif |