From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bastian Hecht Date: Thu, 01 Mar 2012 09:48:38 +0000 Subject: [PATCH v3 4/7] mtd: sh_flctl: Implement NAND_CMD_RNDOUT command Message-Id: <1330595321-2728-4-git-send-email-hechtb@gmail.com> List-Id: References: <1330595321-2728-1-git-send-email-hechtb@gmail.com> In-Reply-To: <1330595321-2728-1-git-send-email-hechtb@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-sh@vger.kernel.org, linux-mtd@lists.infradead.org Cc: Magnus Damm , Laurent Pichart Implements the command to seek and read in pages. Signed-off-by: Bastian Hecht --- changelog: the code only works for software ecc. Make this explicit in the code drivers/mtd/nand/sh_flctl.c | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-) diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c index 407acb5..655ff2d 100644 --- a/drivers/mtd/nand/sh_flctl.c +++ b/drivers/mtd/nand/sh_flctl.c @@ -303,6 +303,7 @@ static void set_cmd_regs(struct mtd_info *mtd, uint32_t cmd, uint32_t flcmcdr_va break; case NAND_CMD_READ0: case NAND_CMD_READOOB: + case NAND_CMD_RNDOUT: addr_len_bytes = flctl->rw_ADRCNT; flcmdcr_val |= CDSRC_E; if (flctl->chip.options & NAND_BUSWIDTH_16) @@ -558,6 +559,21 @@ static void flctl_cmdfunc(struct mtd_info *mtd, unsigned int command, flctl->read_bytes = mtd->oobsize; goto read_normal_exit; + case NAND_CMD_RNDOUT: + if (flctl->hwecc) + break; + + if (flctl->page_size) + set_cmd_regs(mtd, command, (NAND_CMD_RNDOUTSTART << 8) + | command); + else + set_cmd_regs(mtd, command, command); + + set_addr(mtd, column, 0); + + flctl->read_bytes = mtd->writesize + mtd->oobsize - column; + goto read_normal_exit; + case NAND_CMD_READID: set_cmd_regs(mtd, command, command); -- 1.7.5.4