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ssb: Add new SPROM structure while keeping the old

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The SPROM's for various devices utilizing the Sonics Silicon Backplane come
with various revisions. The Revision 2 SPROM inherited the data layout of 1, and
Revision 3 inherited the layout of 2. The first instance of Revision 4 has
now been found in a BCM4328 wireless LAN card. This device does not inherit any
layout from previous versions. Although it was possible to create a data
structure that kept all the old layouts, we decided to start fresh, keep only
those SPROM variables that are used by the drivers that utilize ssb, and to
do the conversion in such a manner that neither compilation or execution will
be affected if a bisection lands in the middle of these changes, while keeping
the patches as small as possible.

In this patch, the sprom structures are changed while maintaining the old ones.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Larry Finger
2007-11-09 16:54:45 -06:00
committed by David S. Miller
parent 3957ccb56e
commit ac82fab44f
3 changed files with 58 additions and 8 deletions
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2
drivers/ssb/pci.c
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@@ -423,8 +423,6 @@ static int sprom_extract(struct ssb_bus *bus,
memset(out, 0, sizeof(*out));
SPEX(revision, SSB_SPROM_REVISION, SSB_SPROM_REVISION_REV, 0);
SPEX(crc, SSB_SPROM_REVISION, SSB_SPROM_REVISION_CRC,
SSB_SPROM_REVISION_CRC_SHIFT);
if ((bus->chip_id & 0xFF00) == 0x4400) {
/* Workaround: The BCM44XX chip has a stupid revision