diff options
| author | Todd Poynor <tpoynor@mvista.com> | 2005-11-15 23:28:20 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-11-29 19:27:24 +0100 |
| commit | 987d24018dc83d27e491674c50ff2272f51eb719 (patch) | |
| tree | 3cef69b2a161db4a194cec81b9f3bd28b009dc0c /drivers/mtd | |
| parent | 3eb8ceac486ed9b6eceed098423f1ca6b180ec9d (diff) | |
| download | op-kernel-dev-987d24018dc83d27e491674c50ff2272f51eb719.zip op-kernel-dev-987d24018dc83d27e491674c50ff2272f51eb719.tar.gz | |
[MTD] CFI: Use 16-bit access to autoselect/read device id data
Recent models of Intel/Sharp and Spansion CFI flash now have significant
bits in the upper byte of device ID codes, read via what Spansion calls
"autoselect" and Intel calls "read device identifier". Currently these
values are truncated to the low 8 bits in the mtd data structures, as
all CFI read query info has previously been read one byte at a time.
Add a new method for reading 16-bit info, currently just manufacturer
and device codes; datasheets hint at future uses for upper bytes in
other fields.
Signed-off-by: Todd Poynor <tpoynor@mvista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/chips/cfi_probe.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/mtd/chips/cfi_probe.c b/drivers/mtd/chips/cfi_probe.c index 90eb30e..d65ccde 100644 --- a/drivers/mtd/chips/cfi_probe.c +++ b/drivers/mtd/chips/cfi_probe.c @@ -1,7 +1,7 @@ /* Common Flash Interface probe code. (C) 2000 Red Hat. GPL'd. - $Id: cfi_probe.c,v 1.84 2005/11/07 11:14:23 gleixner Exp $ + $Id: cfi_probe.c,v 1.85 2005/11/15 23:28:17 tpoynor Exp $ */ #include <linux/config.h> @@ -230,8 +230,8 @@ static int __xipram cfi_chip_setup(struct map_info *map, cfi_send_gen_cmd(0xaa, 0x555, base, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0x55, 0x2aa, base, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0x90, 0x555, base, map, cfi, cfi->device_type, NULL); - cfi->mfr = cfi_read_query(map, base); - cfi->id = cfi_read_query(map, base + ofs_factor); + cfi->mfr = cfi_read_query16(map, base); + cfi->id = cfi_read_query16(map, base + ofs_factor); /* Put it back into Read Mode */ cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); |
