From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from ch3vs03.rockwellcollins.com ([205.175.226.47]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1f8W0r-0000pn-Q1 for linux-mtd@lists.infradead.org; Tue, 17 Apr 2018 19:11:35 +0000 From: Ronak Desai To: linux-mtd@lists.infradead.org Cc: prabhakar.kushwaha@nxp.com, ronak.desai@rockwellcollins.com Subject: [PATCH] Added set feature command in FSL IFC nand controller driver for ONFI nand Date: Tue, 17 Apr 2018 14:10:59 -0500 Message-Id: <1523992259-56588-1-git-send-email-ronak.desai@rockwellcollins.com> List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This patch adds set feature command (EFh) support in Freescale IFC nand controller driver. The SET FEATURES (EFh) command is used to modify the target's default power-on behavior. This command uses one-byte feature address to determine which sub-feature parameters will be modified. Signed-off-by: Ronak Desai --- drivers/mtd/nand/fsl_ifc_nand.c | 51 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) diff --git a/drivers/mtd/nand/fsl_ifc_nand.c b/drivers/mtd/nand/fsl_ifc_nand.c index af85c4b..20b97ef 100644 --- a/drivers/mtd/nand/fsl_ifc_nand.c +++ b/drivers/mtd/nand/fsl_ifc_nand.c @@ -613,6 +613,23 @@ static void fsl_ifc_cmdfunc(struct mtd_info *mtd, unsigned int command, fsl_ifc_run_command(mtd); return; + case NAND_CMD_SET_FEATURES: { + ifc_out32((IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) | + (IFC_FIR_OP_UA << IFC_NAND_FIR0_OP1_SHIFT) | + (IFC_FIR_OP_WBCD << IFC_NAND_FIR0_OP2_SHIFT), + &ifc->ifc_nand.nand_fir0); + + ifc_out32((NAND_CMD_SET_FEATURES << IFC_NAND_FCR0_CMD0_SHIFT), + &ifc->ifc_nand.nand_fcr0); + + ifc_out32(column, &ifc->ifc_nand.row3); + + /* Write only 4 bytes from flash buffer */ + ifc_out32(4, &ifc->ifc_nand.nand_fbcr); + fsl_ifc_run_command(mtd); + return; + } + case NAND_CMD_RNDOUT: { __le16 Tccs = 0; chip->onfi_version ? (Tccs = chip->onfi_params.t_ccs) @@ -905,6 +922,39 @@ static void fsl_ifc_sram_init(struct fsl_ifc_mtd *priv) ifc_out32(csor_ext, &ifc_global->csor_cs[cs].csor_ext); } +/** + * fsl_ifc_onfi_set_features- set features for ONFI nand + * @mtd: MTD device structure + * @chip: nand chip info structure + * @addr: feature address. + * @subfeature_param: the subfeature parameters, a four bytes array. + */ +static int fsl_ifc_onfi_set_features(struct mtd_info *mtd, struct nand_chip *chip, + int addr, uint8_t *subfeature_param) +{ + int status; + int i; + +#ifdef CONFIG_SYS_NAND_ONFI_DETECTION + if (!chip->onfi_version || + !(le16_to_cpu(chip->onfi_params.opt_cmd) + & ONFI_OPT_CMD_SET_GET_FEATURES)) + return -EINVAL; +#endif + + /* Want data from start of the buffer */ + set_addr(mtd, 0, 0, 0); + + for (i = 0; i < ONFI_SUBFEATURE_PARAM_LEN; ++i) + chip->write_byte(mtd, subfeature_param[i]); + + chip->cmdfunc(mtd, NAND_CMD_SET_FEATURES, addr, 0); + + status = chip->waitfunc(mtd, chip); + if (status & NAND_STATUS_FAIL) + return -EIO; + return 0; +} static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv) { struct fsl_ifc_ctrl *ctrl = priv->ctrl; @@ -932,6 +982,7 @@ static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv) chip->select_chip = fsl_ifc_select_chip; chip->cmdfunc = fsl_ifc_cmdfunc; chip->waitfunc = fsl_ifc_wait; + chip->onfi_set_features = fsl_ifc_onfi_set_features; chip->bbt_td = &bbt_main_descr; chip->bbt_md = &bbt_mirror_descr; -- 1.7.9.5