From: Md Sadre Alam <mdalam@codeaurora.org> To: miquel.raynal@bootlin.com, mani@kernel.org, boris.brezillon@collabora.com, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org Cc: mdalam@codeaurora.org, sricharan@codeaurora.org Subject: [PATCH 4/5] mtd: rawnand: qcom: Add helper to configure location register Date: Wed, 24 Feb 2021 01:09:00 +0530 [thread overview] Message-ID: <1614109141-7531-4-git-send-email-mdalam@codeaurora.org> (raw) In-Reply-To: <1614109141-7531-1-git-send-email-mdalam@codeaurora.org> Create a nandc_set_read_loc() helper to abstract the configuration of the location register. QPIC v2 onwards features a separate location register for the last codeword, so introducing this extra helper which will simplify the addition of QPIC v2 support. Signed-off-by: Md Sadre Alam <mdalam@codeaurora.org> --- drivers/mtd/nand/raw/qcom_nandc.c | 36 ++++++++++++++++++++++++------------ 1 file changed, 24 insertions(+), 12 deletions(-) diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c index f1aafee..57d2ad02 100644 --- a/drivers/mtd/nand/raw/qcom_nandc.c +++ b/drivers/mtd/nand/raw/qcom_nandc.c @@ -181,8 +181,8 @@ #define ECC_BCH_4BIT BIT(2) #define ECC_BCH_8BIT BIT(3) -#define nandc_set_read_loc(chip, reg, cw_offset, read_size, is_last_read_loc) \ -nandc_set_reg(chip, NAND_READ_LOCATION_##reg, \ +#define nandc_set_read_loc_first(chip, reg, cw_offset, read_size, is_last_read_loc) \ +nandc_set_reg(chip, reg, \ ((cw_offset) << READ_LOCATION_OFFSET) | \ ((read_size) << READ_LOCATION_SIZE) | \ ((is_last_read_loc) << READ_LOCATION_LAST)) @@ -668,6 +668,18 @@ static bool qcom_nandc_is_last_cw(struct nand_ecc_ctrl *ecc, int cw) return cw == (ecc->steps - 1); } +/* helper to configure location register values */ +static void nandc_set_read_loc(struct nand_chip *chip, int cw, int reg, + int cw_offset, int read_size, int is_last_read_loc) +{ + int reg_base = NAND_READ_LOCATION_0; + + reg_base += reg * 4; + + return nandc_set_read_loc_first(chip, reg_base, cw_offset, + read_size, is_last_read_loc); +} + /* helper to configure address register values */ static void set_address(struct qcom_nand_host *host, u16 column, int page) { @@ -725,7 +737,7 @@ static void update_rw_regs(struct qcom_nand_host *host, int num_cw, bool read) nandc_set_reg(chip, NAND_EXEC_CMD, 1); if (read) - nandc_set_read_loc(chip, 0, 0, host->use_ecc ? + nandc_set_read_loc(chip, 0, 0, 0, host->use_ecc ? host->cw_data : host->cw_size, 1); } @@ -1218,7 +1230,7 @@ static int nandc_param(struct qcom_nand_host *host) nandc_set_reg(chip, NAND_DEV_CMD_VLD_RESTORE, nandc->vld); } - nandc_set_read_loc(chip, 0, 0, 512, 1); + nandc_set_read_loc(chip, 0, 0, 0, 512, 1); if (!nandc->props->qpic_v2) { write_reg_dma(nandc, NAND_DEV_CMD_VLD, 1, 0); @@ -1646,16 +1658,16 @@ qcom_nandc_read_cw_raw(struct mtd_info *mtd, struct nand_chip *chip, } if (nandc->props->is_bam) { - nandc_set_read_loc(chip, 0, read_loc, data_size1, 0); + nandc_set_read_loc(chip, cw, 0, read_loc, data_size1, 0); read_loc += data_size1; - nandc_set_read_loc(chip, 1, read_loc, oob_size1, 0); + nandc_set_read_loc(chip, cw, 1, read_loc, oob_size1, 0); read_loc += oob_size1; - nandc_set_read_loc(chip, 2, read_loc, data_size2, 0); + nandc_set_read_loc(chip, cw, 2, read_loc, data_size2, 0); read_loc += data_size2; - nandc_set_read_loc(chip, 3, read_loc, oob_size2, 1); + nandc_set_read_loc(chip, cw, 3, read_loc, oob_size2, 1); } config_nand_cw_read(chip, false); @@ -1886,13 +1898,13 @@ static int read_page_ecc(struct qcom_nand_host *host, u8 *data_buf, if (nandc->props->is_bam) { if (data_buf && oob_buf) { - nandc_set_read_loc(chip, 0, 0, data_size, 0); - nandc_set_read_loc(chip, 1, data_size, + nandc_set_read_loc(chip, i, 0, 0, data_size, 0); + nandc_set_read_loc(chip, i, 1, data_size, oob_size, 1); } else if (data_buf) { - nandc_set_read_loc(chip, 0, 0, data_size, 1); + nandc_set_read_loc(chip, i, 0, 0, data_size, 1); } else { - nandc_set_read_loc(chip, 0, data_size, + nandc_set_read_loc(chip, i, 0, data_size, oob_size, 1); } } -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Md Sadre Alam <mdalam@codeaurora.org> To: miquel.raynal@bootlin.com, mani@kernel.org, boris.brezillon@collabora.com, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org Cc: mdalam@codeaurora.org, sricharan@codeaurora.org Subject: [PATCH 4/5] mtd: rawnand: qcom: Add helper to configure location register Date: Wed, 24 Feb 2021 01:09:00 +0530 [thread overview] Message-ID: <1614109141-7531-4-git-send-email-mdalam@codeaurora.org> (raw) In-Reply-To: <1614109141-7531-1-git-send-email-mdalam@codeaurora.org> Create a nandc_set_read_loc() helper to abstract the configuration of the location register. QPIC v2 onwards features a separate location register for the last codeword, so introducing this extra helper which will simplify the addition of QPIC v2 support. Signed-off-by: Md Sadre Alam <mdalam@codeaurora.org> --- drivers/mtd/nand/raw/qcom_nandc.c | 36 ++++++++++++++++++++++++------------ 1 file changed, 24 insertions(+), 12 deletions(-) diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c index f1aafee..57d2ad02 100644 --- a/drivers/mtd/nand/raw/qcom_nandc.c +++ b/drivers/mtd/nand/raw/qcom_nandc.c @@ -181,8 +181,8 @@ #define ECC_BCH_4BIT BIT(2) #define ECC_BCH_8BIT BIT(3) -#define nandc_set_read_loc(chip, reg, cw_offset, read_size, is_last_read_loc) \ -nandc_set_reg(chip, NAND_READ_LOCATION_##reg, \ +#define nandc_set_read_loc_first(chip, reg, cw_offset, read_size, is_last_read_loc) \ +nandc_set_reg(chip, reg, \ ((cw_offset) << READ_LOCATION_OFFSET) | \ ((read_size) << READ_LOCATION_SIZE) | \ ((is_last_read_loc) << READ_LOCATION_LAST)) @@ -668,6 +668,18 @@ static bool qcom_nandc_is_last_cw(struct nand_ecc_ctrl *ecc, int cw) return cw == (ecc->steps - 1); } +/* helper to configure location register values */ +static void nandc_set_read_loc(struct nand_chip *chip, int cw, int reg, + int cw_offset, int read_size, int is_last_read_loc) +{ + int reg_base = NAND_READ_LOCATION_0; + + reg_base += reg * 4; + + return nandc_set_read_loc_first(chip, reg_base, cw_offset, + read_size, is_last_read_loc); +} + /* helper to configure address register values */ static void set_address(struct qcom_nand_host *host, u16 column, int page) { @@ -725,7 +737,7 @@ static void update_rw_regs(struct qcom_nand_host *host, int num_cw, bool read) nandc_set_reg(chip, NAND_EXEC_CMD, 1); if (read) - nandc_set_read_loc(chip, 0, 0, host->use_ecc ? + nandc_set_read_loc(chip, 0, 0, 0, host->use_ecc ? host->cw_data : host->cw_size, 1); } @@ -1218,7 +1230,7 @@ static int nandc_param(struct qcom_nand_host *host) nandc_set_reg(chip, NAND_DEV_CMD_VLD_RESTORE, nandc->vld); } - nandc_set_read_loc(chip, 0, 0, 512, 1); + nandc_set_read_loc(chip, 0, 0, 0, 512, 1); if (!nandc->props->qpic_v2) { write_reg_dma(nandc, NAND_DEV_CMD_VLD, 1, 0); @@ -1646,16 +1658,16 @@ qcom_nandc_read_cw_raw(struct mtd_info *mtd, struct nand_chip *chip, } if (nandc->props->is_bam) { - nandc_set_read_loc(chip, 0, read_loc, data_size1, 0); + nandc_set_read_loc(chip, cw, 0, read_loc, data_size1, 0); read_loc += data_size1; - nandc_set_read_loc(chip, 1, read_loc, oob_size1, 0); + nandc_set_read_loc(chip, cw, 1, read_loc, oob_size1, 0); read_loc += oob_size1; - nandc_set_read_loc(chip, 2, read_loc, data_size2, 0); + nandc_set_read_loc(chip, cw, 2, read_loc, data_size2, 0); read_loc += data_size2; - nandc_set_read_loc(chip, 3, read_loc, oob_size2, 1); + nandc_set_read_loc(chip, cw, 3, read_loc, oob_size2, 1); } config_nand_cw_read(chip, false); @@ -1886,13 +1898,13 @@ static int read_page_ecc(struct qcom_nand_host *host, u8 *data_buf, if (nandc->props->is_bam) { if (data_buf && oob_buf) { - nandc_set_read_loc(chip, 0, 0, data_size, 0); - nandc_set_read_loc(chip, 1, data_size, + nandc_set_read_loc(chip, i, 0, 0, data_size, 0); + nandc_set_read_loc(chip, i, 1, data_size, oob_size, 1); } else if (data_buf) { - nandc_set_read_loc(chip, 0, 0, data_size, 1); + nandc_set_read_loc(chip, i, 0, 0, data_size, 1); } else { - nandc_set_read_loc(chip, 0, data_size, + nandc_set_read_loc(chip, i, 0, data_size, oob_size, 1); } } -- 2.7.4 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/
next prev parent reply other threads:[~2021-02-23 19:41 UTC|newest] Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-02-23 19:38 [PATCH 1/5] mtd: rawnand: qcom: Convert nandc to chip in Read/Write helper Md Sadre Alam 2021-02-23 19:38 ` Md Sadre Alam 2021-02-23 19:38 ` [PATCH 2/5] mtd: rawnand: qcom: Add helper to check last code word Md Sadre Alam 2021-02-23 19:38 ` Md Sadre Alam 2021-03-02 16:32 ` Miquel Raynal 2021-03-02 16:32 ` Miquel Raynal 2021-02-23 19:38 ` [PATCH 3/5] mtd: rawnand: qcom: Rename parameter name in macro Md Sadre Alam 2021-02-23 19:38 ` Md Sadre Alam 2021-03-02 16:32 ` Miquel Raynal 2021-03-02 16:32 ` Miquel Raynal 2021-02-23 19:39 ` Md Sadre Alam [this message] 2021-02-23 19:39 ` [PATCH 4/5] mtd: rawnand: qcom: Add helper to configure location register Md Sadre Alam 2021-03-02 16:32 ` Miquel Raynal 2021-03-02 16:32 ` Miquel Raynal 2021-02-23 19:39 ` [PATCH 5/5] mtd: rawnand: qcom: update last code word register Md Sadre Alam 2021-02-23 19:39 ` Md Sadre Alam 2021-03-02 16:32 ` [PATCH 1/5] mtd: rawnand: qcom: Convert nandc to chip in Read/Write helper Miquel Raynal 2021-03-02 16:32 ` Miquel Raynal
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