The code used to enable/disable the hardware ECC engine is repeated in a lot of places. Create two functions to avoid code duplication.
Signed-off-by: Boris Brezillon <[email protected]> --- drivers/mtd/nand/sunxi_nand.c | 70 ++++++++++++++++++++----------------------- 1 file changed, 32 insertions(+), 38 deletions(-) diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c index dc44435..471fc2b 100644 --- a/drivers/mtd/nand/sunxi_nand.c +++ b/drivers/mtd/nand/sunxi_nand.c @@ -543,6 +543,30 @@ static void sunxi_nfc_cmd_ctrl(struct mtd_info *mtd, int dat, sunxi_nfc_wait_int(nfc, NFC_CMD_INT_FLAG, 0); } +static void sunxi_nfc_hw_ecc_enable(struct mtd_info *mtd) +{ + struct nand_chip *nand = mtd->priv; + struct sunxi_nfc *nfc = to_sunxi_nfc(nand->controller); + struct sunxi_nand_hw_ecc *data = nand->ecc.priv; + u32 ecc_ctl; + + ecc_ctl = readl(nfc->regs + NFC_REG_ECC_CTL); + ecc_ctl &= ~(NFC_ECC_MODE_MSK | NFC_ECC_PIPELINE | + NFC_ECC_BLOCK_SIZE_MSK); + ecc_ctl |= NFC_ECC_EN | NFC_ECC_MODE(data->mode) | NFC_ECC_EXCEPTION; + + writel(ecc_ctl, nfc->regs + NFC_REG_ECC_CTL); +} + +static void sunxi_nfc_hw_ecc_disable(struct mtd_info *mtd) +{ + struct nand_chip *nand = mtd->priv; + struct sunxi_nfc *nfc = to_sunxi_nfc(nand->controller); + + writel(readl(nfc->regs + NFC_REG_ECC_CTL) & ~NFC_ECC_EN, + nfc->regs + NFC_REG_ECC_CTL); +} + static int sunxi_nfc_hw_ecc_read_page(struct mtd_info *mtd, struct nand_chip *chip, uint8_t *buf, int oob_required, int page) @@ -550,7 +574,6 @@ static int sunxi_nfc_hw_ecc_read_page(struct mtd_info *mtd, struct sunxi_nfc *nfc = to_sunxi_nfc(chip->controller); struct nand_ecc_ctrl *ecc = &chip->ecc; struct nand_ecclayout *layout = ecc->layout; - struct sunxi_nand_hw_ecc *data = ecc->priv; unsigned int max_bitflips = 0; int offset; int ret; @@ -558,11 +581,7 @@ static int sunxi_nfc_hw_ecc_read_page(struct mtd_info *mtd, int i; int cnt; - tmp = readl(nfc->regs + NFC_REG_ECC_CTL); - tmp &= ~(NFC_ECC_MODE_MSK | NFC_ECC_PIPELINE | NFC_ECC_BLOCK_SIZE_MSK); - tmp |= NFC_ECC_EN | NFC_ECC_MODE(data->mode) | NFC_ECC_EXCEPTION; - - writel(tmp, nfc->regs + NFC_REG_ECC_CTL); + sunxi_nfc_hw_ecc_enable(mtd); for (i = 0; i < ecc->steps; i++) { if (i) @@ -620,10 +639,7 @@ static int sunxi_nfc_hw_ecc_read_page(struct mtd_info *mtd, } } - tmp = readl(nfc->regs + NFC_REG_ECC_CTL); - tmp &= ~NFC_ECC_EN; - - writel(tmp, nfc->regs + NFC_REG_ECC_CTL); + sunxi_nfc_hw_ecc_disable(mtd); return max_bitflips; } @@ -635,18 +651,13 @@ static int sunxi_nfc_hw_ecc_write_page(struct mtd_info *mtd, struct sunxi_nfc *nfc = to_sunxi_nfc(chip->controller); struct nand_ecc_ctrl *ecc = &chip->ecc; struct nand_ecclayout *layout = ecc->layout; - struct sunxi_nand_hw_ecc *data = ecc->priv; int offset; int ret; u32 tmp; int i; int cnt; - tmp = readl(nfc->regs + NFC_REG_ECC_CTL); - tmp &= ~(NFC_ECC_MODE_MSK | NFC_ECC_PIPELINE | NFC_ECC_BLOCK_SIZE_MSK); - tmp |= NFC_ECC_EN | NFC_ECC_MODE(data->mode) | NFC_ECC_EXCEPTION; - - writel(tmp, nfc->regs + NFC_REG_ECC_CTL); + sunxi_nfc_hw_ecc_enable(mtd); for (i = 0; i < ecc->steps; i++) { if (i) @@ -686,10 +697,7 @@ static int sunxi_nfc_hw_ecc_write_page(struct mtd_info *mtd, } } - tmp = readl(nfc->regs + NFC_REG_ECC_CTL); - tmp &= ~NFC_ECC_EN; - - writel(tmp, nfc->regs + NFC_REG_ECC_CTL); + sunxi_nfc_hw_ecc_disable(mtd); return 0; } @@ -701,7 +709,6 @@ static int sunxi_nfc_hw_syndrome_ecc_read_page(struct mtd_info *mtd, { struct sunxi_nfc *nfc = to_sunxi_nfc(chip->controller); struct nand_ecc_ctrl *ecc = &chip->ecc; - struct sunxi_nand_hw_ecc *data = ecc->priv; unsigned int max_bitflips = 0; uint8_t *oob = chip->oob_poi; int offset = 0; @@ -710,11 +717,7 @@ static int sunxi_nfc_hw_syndrome_ecc_read_page(struct mtd_info *mtd, u32 tmp; int i; - tmp = readl(nfc->regs + NFC_REG_ECC_CTL); - tmp &= ~(NFC_ECC_MODE_MSK | NFC_ECC_PIPELINE | NFC_ECC_BLOCK_SIZE_MSK); - tmp |= NFC_ECC_EN | NFC_ECC_MODE(data->mode) | NFC_ECC_EXCEPTION; - - writel(tmp, nfc->regs + NFC_REG_ECC_CTL); + sunxi_nfc_hw_ecc_enable(mtd); for (i = 0; i < ecc->steps; i++) { chip->read_buf(mtd, NULL, ecc->size); @@ -755,8 +758,7 @@ static int sunxi_nfc_hw_syndrome_ecc_read_page(struct mtd_info *mtd, } } - writel(readl(nfc->regs + NFC_REG_ECC_CTL) & ~NFC_ECC_EN, - nfc->regs + NFC_REG_ECC_CTL); + sunxi_nfc_hw_ecc_disable(mtd); return max_bitflips; } @@ -768,7 +770,6 @@ static int sunxi_nfc_hw_syndrome_ecc_write_page(struct mtd_info *mtd, { struct sunxi_nfc *nfc = to_sunxi_nfc(chip->controller); struct nand_ecc_ctrl *ecc = &chip->ecc; - struct sunxi_nand_hw_ecc *data = ecc->priv; uint8_t *oob = chip->oob_poi; int offset = 0; int ret; @@ -776,11 +777,7 @@ static int sunxi_nfc_hw_syndrome_ecc_write_page(struct mtd_info *mtd, u32 tmp; int i; - tmp = readl(nfc->regs + NFC_REG_ECC_CTL); - tmp &= ~(NFC_ECC_MODE_MSK | NFC_ECC_PIPELINE | NFC_ECC_BLOCK_SIZE_MSK); - tmp |= NFC_ECC_EN | NFC_ECC_MODE(data->mode) | NFC_ECC_EXCEPTION; - - writel(tmp, nfc->regs + NFC_REG_ECC_CTL); + sunxi_nfc_hw_ecc_enable(mtd); for (i = 0; i < ecc->steps; i++) { chip->write_buf(mtd, buf + (i * ecc->size), ecc->size); @@ -810,10 +807,7 @@ static int sunxi_nfc_hw_syndrome_ecc_write_page(struct mtd_info *mtd, } } - tmp = readl(nfc->regs + NFC_REG_ECC_CTL); - tmp &= ~NFC_ECC_EN; - - writel(tmp, nfc->regs + NFC_REG_ECC_CTL); + sunxi_nfc_hw_ecc_disable(mtd); return 0; } -- 2.1.4 -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. 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