ath9k: add a small hack to make changing the channel bandwidth to 5/10 mhz available through debugfs - does not work on all chipsets and is not recommended for production use yet
SVN-Revision: 27340master
parent
aca1b30101
commit
9f38d4402b
@ -0,0 +1,54 @@ |
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--- a/drivers/net/wireless/ath/ath9k/ath9k.h
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+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
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@@ -586,6 +586,7 @@ struct ath_softc {
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struct ieee80211_hw *hw;
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struct device *dev;
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+ u32 chan_bw;
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int chan_idx;
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int chan_is_ht;
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struct survey_info *cur_survey;
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--- a/drivers/net/wireless/ath/ath9k/debug.c
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+++ b/drivers/net/wireless/ath/ath9k/debug.c
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@@ -1281,6 +1281,9 @@ int ath9k_init_debug(struct ath_hw *ah)
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debugfs_create_file("eeprom", S_IRUSR, sc->debug.debugfs_phy, sc,
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&fops_eeprom);
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+ debugfs_create_u32("chanbw", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
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+ &sc->chan_bw);
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+
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sc->debug.regidx = 0;
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return 0;
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}
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--- a/drivers/net/wireless/ath/ath9k/main.c
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+++ b/drivers/net/wireless/ath/ath9k/main.c
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@@ -226,6 +226,7 @@ static int ath_set_channel(struct ath_so
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bool fastcc = true, stopped;
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struct ieee80211_channel *channel = hw->conf.channel;
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struct ath9k_hw_cal_data *caldata = NULL;
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+ u32 oldflags;
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int r;
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if (sc->sc_flags & SC_OP_INVALID)
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@@ -268,6 +269,21 @@ static int ath_set_channel(struct ath_so
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if (!stopped || !(sc->sc_flags & SC_OP_OFFCHANNEL))
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fastcc = false;
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+ oldflags = hchan->channelFlags;
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+ switch (sc->chan_bw) {
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+ case 5:
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+ hchan->channelFlags &= ~CHANNEL_HALF;
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+ hchan->channelFlags |= CHANNEL_QUARTER;
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+ break;
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+ case 10:
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+ hchan->channelFlags &= ~CHANNEL_QUARTER;
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+ hchan->channelFlags |= CHANNEL_HALF;
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+ break;
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+ }
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+
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+ if (oldflags != hchan->channelFlags)
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+ fastcc = false;
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+
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if (!(sc->sc_flags & SC_OP_OFFCHANNEL))
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caldata = &sc->caldata;
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