diff options
Diffstat (limited to 'drivers/ssb/sprom.c')
| -rw-r--r-- | drivers/ssb/sprom.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/ssb/sprom.c b/drivers/ssb/sprom.c index d0e6762fec50..007bc3a03486 100644 --- a/drivers/ssb/sprom.c +++ b/drivers/ssb/sprom.c @@ -14,6 +14,7 @@ #include "ssb_private.h" #include <linux/ctype.h> +#include <linux/slab.h> static const struct ssb_sprom *fallback_sprom; @@ -175,3 +176,17 @@ const struct ssb_sprom *ssb_get_fallback_sprom(void) { return fallback_sprom; } + +/* http://bcm-v4.sipsolutions.net/802.11/IsSpromAvailable */ +bool ssb_is_sprom_available(struct ssb_bus *bus) +{ + /* status register only exists on chipcomon rev >= 11 and we need check + for >= 31 only */ + /* this routine differs from specs as we do not access SPROM directly + on PCMCIA */ + if (bus->bustype == SSB_BUSTYPE_PCI && + bus->chipco.dev->id.revision >= 31) + return bus->chipco.capabilities & SSB_CHIPCO_CAP_SPROM; + + return true; +} |