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    Subject[PATCH v4 3/9] mtd: nand: ecc-mtk: Add ECC support fot MT7986 IC
    Date
    Add ECC support fot MT7986 IC, and change err_mask value with
    GENMASK macro.

    Signed-off-by: Xiangsheng Hou <xiangsheng.hou@mediatek.com>
    ---
    drivers/mtd/nand/ecc-mtk.c | 28 +++++++++++++++++++++++++---
    1 file changed, 25 insertions(+), 3 deletions(-)

    diff --git a/drivers/mtd/nand/ecc-mtk.c b/drivers/mtd/nand/ecc-mtk.c
    index 9f9b201fe706..c75bb8b80cc1 100644
    --- a/drivers/mtd/nand/ecc-mtk.c
    +++ b/drivers/mtd/nand/ecc-mtk.c
    @@ -40,6 +40,10 @@
    #define ECC_IDLE_REG(op) ((op) == ECC_ENCODE ? ECC_ENCIDLE : ECC_DECIDLE)
    #define ECC_CTL_REG(op) ((op) == ECC_ENCODE ? ECC_ENCCON : ECC_DECCON)

    +#define ECC_ERRMASK_MT7622 GENMASK(4, 0)
    +#define ECC_ERRMASK_MT2701 GENMASK(5, 0)
    +#define ECC_ERRMASK_MT2712 GENMASK(6, 0)
    +
    struct mtk_ecc_caps {
    u32 err_mask;
    u32 err_shift;
    @@ -79,6 +83,10 @@ static const u8 ecc_strength_mt7622[] = {
    4, 6, 8, 10, 12
    };

    +static const u8 ecc_strength_mt7986[] = {
    + 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24
    +};
    +
    enum mtk_ecc_regs {
    ECC_ENCPAR00,
    ECC_ENCIRQ_EN,
    @@ -451,7 +459,7 @@ unsigned int mtk_ecc_get_parity_bits(struct mtk_ecc *ecc)
    EXPORT_SYMBOL(mtk_ecc_get_parity_bits);

    static const struct mtk_ecc_caps mtk_ecc_caps_mt2701 = {
    - .err_mask = 0x3f,
    + .err_mask = ECC_ERRMASK_MT2701,
    .err_shift = 8,
    .ecc_strength = ecc_strength_mt2701,
    .ecc_regs = mt2701_ecc_regs,
    @@ -462,7 +470,7 @@ static const struct mtk_ecc_caps mtk_ecc_caps_mt2701 = {
    };

    static const struct mtk_ecc_caps mtk_ecc_caps_mt2712 = {
    - .err_mask = 0x7f,
    + .err_mask = ECC_ERRMASK_MT2712,
    .err_shift = 8,
    .ecc_strength = ecc_strength_mt2712,
    .ecc_regs = mt2712_ecc_regs,
    @@ -473,7 +481,7 @@ static const struct mtk_ecc_caps mtk_ecc_caps_mt2712 = {
    };

    static const struct mtk_ecc_caps mtk_ecc_caps_mt7622 = {
    - .err_mask = 0x1f,
    + .err_mask = ECC_ERRMASK_MT7622,
    .err_shift = 5,
    .ecc_strength = ecc_strength_mt7622,
    .ecc_regs = mt7622_ecc_regs,
    @@ -483,6 +491,17 @@ static const struct mtk_ecc_caps mtk_ecc_caps_mt7622 = {
    .pg_irq_sel = 0,
    };

    +static const struct mtk_ecc_caps mtk_ecc_caps_mt7986 = {
    + .err_mask = ECC_ERRMASK_MT7622,
    + .err_shift = 8,
    + .ecc_strength = ecc_strength_mt7986,
    + .ecc_regs = mt2712_ecc_regs,
    + .num_ecc_strength = 11,
    + .ecc_mode_shift = 5,
    + .parity_bits = 14,
    + .pg_irq_sel = 1,
    +};
    +
    static const struct of_device_id mtk_ecc_dt_match[] = {
    {
    .compatible = "mediatek,mt2701-ecc",
    @@ -493,6 +512,9 @@ static const struct of_device_id mtk_ecc_dt_match[] = {
    }, {
    .compatible = "mediatek,mt7622-ecc",
    .data = &mtk_ecc_caps_mt7622,
    + }, {
    + .compatible = "mediatek,mt7986-ecc",
    + .data = &mtk_ecc_caps_mt7986,
    },
    {},
    };
    --
    2.25.1
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