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authorTodd Poynor <tpoynor@mvista.com>2005-11-15 23:28:20 +0000
committerThomas Gleixner <tglx@mtd.linutronix.de>2005-11-29 19:27:24 +0100
commit987d24018dc83d27e491674c50ff2272f51eb719 (patch)
tree3cef69b2a161db4a194cec81b9f3bd28b009dc0c /drivers/mtd
parent3eb8ceac486ed9b6eceed098423f1ca6b180ec9d (diff)
downloadop-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.c6
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);
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