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| author | Bruno Randolf <br1@einfach.org> | 2011-01-25 07:15:33 +0300 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-01-28 23:44:26 +0300 |
| commit | 5719efdde1d0ae8670b96eb8748d1a0dc6a37be2 (patch) | |
| tree | b5cd960b7a5ca7b09d35a438915837cff748ea09 /drivers/net/wireless/ath/regd.c | |
| parent | 20a904904dc69d4b4de26c146af33eb00f05ab92 (diff) | |
| download | linux-5719efdde1d0ae8670b96eb8748d1a0dc6a37be2.tar.xz | |
ath: Add function to check if 4.9GHz channels are allowed
This adds a helper function to ath/regd.c which can be asked if 4.9GHz channels
are allowed for a given regulatory domain code. This keeps the knowledge of
regdomains and defines like MKK9_MKKC in one place. I'm passing the regdomain
code instead of the ath_regulatory structure because this needs to be called
quite early in the driver inititalization where ath_regulatory is not available
yet in ath5k.
I'm using MKK9_MKKC only because this is the regdomain in the 802.11j enabled
sample cards we got from our vendor. I found some hints in HAL code that this
is used by Atheros to indicate 4.9GHz channels support and that there might be
other domain codes as well, but as I don't have any documentation I'm just
putting in what I need right now. It can be extended later.
Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/regd.c')
| -rw-r--r-- | drivers/net/wireless/ath/regd.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/regd.c b/drivers/net/wireless/ath/regd.c index 2b14775e6bc6..f828f294ba89 100644 --- a/drivers/net/wireless/ath/regd.c +++ b/drivers/net/wireless/ath/regd.c @@ -158,6 +158,13 @@ ieee80211_regdomain *ath_world_regdomain(struct ath_regulatory *reg) } } +bool ath_is_49ghz_allowed(u16 regdomain) +{ + /* possibly more */ + return regdomain == MKK9_MKKC; +} +EXPORT_SYMBOL(ath_is_49ghz_allowed); + /* Frequency is one where radar detection is required */ static bool ath_is_radar_freq(u16 center_freq) { |