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rt2x00: Fix max TX power settings

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During initialization each driver reads the default TX power
for each individual channel. However mac80211 only accepts the
maximum value (which is also handled as default value).

As a result, the TX power of the device was being limited to
the default value, which is often quite low compared to the
real maximum acceptable value.

This patch allows each driver to set the maximum value on a
per-channel basis which is forwarded to mac80211. The default
value will be preserved for now, in case we want to update
mac80211 to differentiate between the maximum and default txpower.

This fixes bug complaining about limited TX power values like:
https://bugzilla.kernel.org/show_bug.cgi?id=16358

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ivo van Doorn
2010-08-23 19:56:07 +02:00
committed by John W. Linville
parent 46323e112c
commit 8d1331b37d
9 changed files with 86 additions and 47 deletions
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7
drivers/net/wireless/rt2x00/rt2800.h
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@@ -1858,6 +1858,13 @@ struct mac_iveiv_entry {
#define EEPROM_RSSI_A2_OFFSET2 FIELD16(0x00ff)
#define EEPROM_RSSI_A2_LNA_A2 FIELD16(0xff00)
/*
* EEPROM Maximum TX power values
*/
#define EEPROM_MAX_TX_POWER 0x0027
#define EEPROM_MAX_TX_POWER_24GHZ FIELD16(0x00ff)
#define EEPROM_MAX_TX_POWER_5GHZ FIELD16(0xff00)
/*
* EEPROM TXpower delta: 20MHZ AND 40 MHZ use different power.
* This is delta in 40MHZ.