Commit 4d21176f authored by Xiangsheng Hou's avatar Xiangsheng Hou Committed by Miquel Raynal
Browse files

mtd: nand: ecc-mtk: Add ECC support fot MT7986 IC 



Add ECC support fot MT7986 IC, and change err_mask value with
GENMASK macro.

Signed-off-by: default avatarXiangsheng Hou <xiangsheng.hou@mediatek.com>
Reviewed-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: default avatarMatthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230201021500.26769-6-xiangsheng.hou@mediatek.com
parent 70d3cf76

drivers/mtd/nand/ecc-mtk.c

+25 −3
Original line number Diff line number Diff line
@@ -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,

	},

	{},

};