From patchwork Fri Aug 10 03:18:57 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: mtd: gpmi: add NAND write verify support From: Huang Shijie X-Patchwork-Id: 176353 Message-Id: <1344568737-902-1-git-send-email-b32955@freescale.com> To: Cc: fabio.estevam@freescale.com, marex@denx.de, dedekind1@gmail.com, Huang Shijie , linux-mtd@lists.infradead.org, shawn.guo@linaro.org, linux-arm-kernel@lists.infradead.org Date: Fri, 10 Aug 2012 11:18:57 +0800 Add NAND write verify support in gpmi-nand driver. Signed-off-by: Huang Shijie --- drivers/mtd/nand/gpmi-nand/gpmi-nand.c | 17 +++++++++++++++++ 1 files changed, 17 insertions(+), 0 deletions(-) diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c index 8c0d2f0..6394483 100644 --- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c +++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c @@ -1488,6 +1488,22 @@ static int gpmi_set_geometry(struct gpmi_nand_data *this) return gpmi_alloc_dma_buffer(this); } +#define MAX_PAGESIZE 8192 +static uint8_t verify_buf[MAX_PAGESIZE]; + +static int gpmi_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len) +{ + struct nand_chip *nand = mtd->priv; + int ret; + + ret = gpmi_ecc_read_page(mtd, nand, verify_buf, 0, 0); + if (ret) + return -EFAULT; + if (memcmp(buf, verify_buf, len)) + return -EFAULT; + return 0; +} + static int gpmi_pre_bbt_scan(struct gpmi_nand_data *this) { int ret; @@ -1556,6 +1572,7 @@ static int __devinit gpmi_nfc_init(struct gpmi_nand_data *this) chip->read_byte = gpmi_read_byte; chip->read_buf = gpmi_read_buf; chip->write_buf = gpmi_write_buf; + chip->verify_buf = gpmi_verify_buf; chip->ecc.read_page = gpmi_ecc_read_page; chip->ecc.write_page = gpmi_ecc_write_page; chip->ecc.read_oob = gpmi_ecc_read_oob;