diff options
| author | Nick Kossifidis <mick@madwifi-project.org> | 2009-08-10 03:31:31 +0300 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-08-14 09:13:56 -0400 |
| commit | 6e220662bf9a2ba284e88a8c8867340c9f6da27e (patch) | |
| tree | e834249db58d19ef374c6a4f01e6974055186e2e /drivers/net/wireless/ath/ath5k/ath5k.h | |
| parent | b55a5de114dcdc03f2f18c3bd98bbabb13ee53ef (diff) | |
ath5k: Use SWI to trigger calibration
* Get rid of calibration timer, instead use a software interrupt
to schedule the calibration tasklet.
a) We don't need a timer for this, there is no need for accuracy
even with round_jiffies i think this is a waste of resources.
Also we don't need to run calibration if we are idle (no
interrupts).
b) When we add ANI support we 'll just extend the poll function
and calibration tasklet and handle all periodic phy calibration
on one place (much cleaner).
c) Having calibration on a tasklet is better since during calibration
we can't transmit or receive (antennas are detached to measure
noise floor), previously calibration could run in parallel with
tx/rx and interfere (packet loss).
v2: kill tasklet on stop_hw, stop/wake queues
v3: use time_is_before_eq_jiffies to compare timestamp with current
time
Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath5k/ath5k.h')
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/ath5k.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath5k/ath5k.h b/drivers/net/wireless/ath/ath5k/ath5k.h index 1047a6cb1d9..c09402eea7f 100644 --- a/drivers/net/wireless/ath/ath5k/ath5k.h +++ b/drivers/net/wireless/ath/ath5k/ath5k.h @@ -919,6 +919,12 @@ enum ath5k_int { AR5K_INT_NOCARD = 0xffffffff }; +/* Software interrupts used for calibration */ +enum ath5k_software_interrupt { + AR5K_SWI_FULL_CALIBRATION = 0x01, + AR5K_SWI_SHORT_CALIBRATION = 0x02, +}; + /* * Power management */ @@ -1123,6 +1129,15 @@ struct ath5k_hw { /* noise floor from last periodic calibration */ s32 ah_noise_floor; + /* Calibration timestamp */ + unsigned long ah_cal_tstamp; + + /* Calibration interval (secs) */ + u8 ah_cal_intval; + + /* Software interrupt mask */ + u8 ah_swi_mask; + /* * Function pointers */ @@ -1276,6 +1291,7 @@ extern int ath5k_hw_channel(struct ath5k_hw *ah, struct ieee80211_channel *chann /* PHY calibration */ extern int ath5k_hw_phy_calibrate(struct ath5k_hw *ah, struct ieee80211_channel *channel); extern int ath5k_hw_noise_floor_calibration(struct ath5k_hw *ah, short freq); +extern void ath5k_hw_calibration_poll(struct ath5k_hw *ah); /* Spur mitigation */ bool ath5k_hw_chan_has_spur_noise(struct ath5k_hw *ah, struct ieee80211_channel *channel); |