diff options
| author | Roman Schneider | 2013-01-15 16:56:24 +0100 |
|---|---|---|
| committer | Artem Bityutskiy | 2013-02-04 08:26:29 +0100 |
| commit | a8459f21ed48fc366ad49ce9828f6bbb1cfac9a9 (patch) | |
| tree | c9a2314335fb6468cdd559a8641bc4767a9cb76d /drivers/mtd | |
| parent | mtd: m25p80: Flash protection support for STmicro chips (diff) | |
| download | kernel-qcow2-linux-a8459f21ed48fc366ad49ce9828f6bbb1cfac9a9.tar.gz kernel-qcow2-linux-a8459f21ed48fc366ad49ce9828f6bbb1cfac9a9.tar.xz kernel-qcow2-linux-a8459f21ed48fc366ad49ce9828f6bbb1cfac9a9.zip | |
mtd: mxc_nand: compress ID info for send_read_id_v3
Also compress the id in case of a v3 NAND flash controller (i.mx51, i.mx53)
and 16Bit buswidth.
Signed-off-by: Roman Schneider <schneider@at.festo.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/mxc_nand.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 45204e41a028..20e1241bd099 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -530,12 +530,23 @@ static void send_page_v1(struct mtd_info *mtd, unsigned int ops) static void send_read_id_v3(struct mxc_nand_host *host) { + struct nand_chip *this = &host->nand; + /* Read ID into main buffer */ writel(NFC_ID, NFC_V3_LAUNCH); wait_op_done(host, true); memcpy32_fromio(host->data_buf, host->main_area0, 16); + + if (this->options & NAND_BUSWIDTH_16) { + /* compress the ID info */ + host->data_buf[1] = host->data_buf[2]; + host->data_buf[2] = host->data_buf[4]; + host->data_buf[3] = host->data_buf[6]; + host->data_buf[4] = host->data_buf[8]; + host->data_buf[5] = host->data_buf[10]; + } } /* Request the NANDFC to perform a read of the NAND device ID. */ |