There is a small window where the mac80211 changes the IEEE80211_CONF_PS
flag, and then informs the driver about the change. We have a race
condition if we are checking the flag in the same time. Avoid it by
introducing a local variable, and using that instead of checking the
IEEE80211_CONF_PS flag directly.

This fix the problem reported by Luis:
http://article.gmane.org/gmane.linux.kernel.wireless.general/34363

Changes-licensed-under: ISC
Signed-off-by: NGabor Juhos <juhosg@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NVivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

We have a dedicated function for this kind of checks, use that
instead of duplicating the code.

Changes-licensed-under: ISC
Signed-off-by: NGabor Juhos <juhosg@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

There are a lot of gaps here.

Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Signed-off-by: NLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This saves us 2733 bytes.

   text    data     bss     dec     hex filename
 252265    3628    1584  257477   3edc5 ath9k-has-b-rate.ko
 249905    3628    1584  255117   3e48d ath9k.ko

Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Siged-off-by: NLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This ports the ath9k rfkill code to the new API offered by
cfg80211 and thus removes a lot of useless stuff.

("With this series a kernel panic, which is a regression, during module
unload disappears." -- Vasanthakumar Thiagarajan <vasanth@atheros.com>

Other patches in the series:

  ath9k: Add helper to get ath9k specific current channel
  ath9k: Make sure we have current channel in ah_curchan before rf
    disable/enable

-- JWL)
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Cc: Luis Rodriguez <mcgrof@gmail.com>
Tested-by: NVasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: NVasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch makes the return type of some of the functions
void as those functions always return true
Signed-off-by: NVasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

On x86 this allows us to do the following small savings:
shave off 23 % off of the module's data, and
shave off 6  % off of the module's text.

We save 456 bytes, for those counting.

$ size ath9k.ko
   text    data     bss     dec     hex filename
 250794    3628    1600  256022   3e816 ath9k.ko
$ size ath9k-old.ko
   text    data     bss     dec     hex filename
 239114   15308    1600  256022   3e816 ath9k-old.ko

$ du -b ath9k.ko
4034244 ath9k.ko
$ du -b ath9k-old.ko
4033788 ath9k-old.ko
Signed-off-by: NLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch replaces old 'hal_' prefixes with 'ath9k_'.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This change creates a new module, ath.ko, which includes code that can
be shared between ath5k, ath9k and ar9170. For now, extract most of the ath9k
regulatory code so it can also be used in ath5k.
Signed-off-by: NBob Copeland <me@bobcopeland.com>
Signed-off-by: NLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The state is already stored in ath9k_ops_config, so remove
the duplicate variable in ath_hw.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This routine always return true, checking for false
in the return value is invalid. Fix this.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch removes unused HW capability flags and
HW operation variables, and a chainmask flag that
we don't use anywhere.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

How time flies.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This is not used anywhere in ath9k and is just making the code more
confusing.
Signed-off-by: NJouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

RX and calibration have different timeout requirements.
This patch fixes it by changing the HW wait routine
to accept a timeout value.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch adds Open Loop Control support for Atheros chipsets that
supports open loop power control.
Signed-off-by: NSenthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch lays the groundwork for handling TSF Out of Range
interrupt, which will be used for power save later on.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch removes the various function pointer
assignments and unifies them in a single ops structure.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Finally, merge these structures and have a single
HW specific data structure.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

A few variables (bssid, bssidmask, curaid) were duplicated in
struct ath_softc and in ath_hal, remove them.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch moves all the HW version/revision specific
information into a separate structure.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch converts the ANI channel reference to a pointer,
this facilitates moving struct ar5416AniState to ani.h
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Split the core header files into manageable pieces.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch implements dynamic power save feature for ath9k.
Signed-off-by: NVivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NSenthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Fix sparse warnings:

drivers/net/wireless/ath9k/hw.c:1850:17: warning: symbol 'tmp' shadows an earlier one
drivers/net/wireless/ath9k/hw.c:1713:6: originally declared here
drivers/net/wireless/ath9k/hw.c:2051:17: warning: symbol 'tmp' shadows an earlier one
drivers/net/wireless/ath9k/hw.c:1961:6: originally declared here

drivers/net/wireless/ath9k/eeprom.c:195:6: warning: symbol 'ath9k_fill_eeprom' was not declared. Should it be static?
drivers/net/wireless/ath9k/eeprom.c:463:5: warning: symbol 'ath9k_check_eeprom' was not declared. Should it be static?
drivers/net/wireless/ath9k/eeprom.c:1219:6: warning: symbol 'ath9k_hw_set_def_power_per_rate_table' was not declared. Should it be static?
drivers/net/wireless/ath9k/eeprom.c:1510:6: warning: symbol 'ath9k_hw_set_4k_power_per_rate_table' was not declared. Should it be static?
drivers/net/wireless/ath9k/eeprom.c:2007:5: warning: symbol 'ath9k_set_txpower' was not declared. Should it be static?
drivers/net/wireless/ath9k/eeprom.c:2106:6: warning: symbol 'ath9k_set_addac' was not declared. Should it be static?
drivers/net/wireless/ath9k/eeprom.c:2543:6: warning: symbol 'ath9k_eeprom_set_board_values' was not declared. Should it be static?
drivers/net/wireless/ath9k/eeprom.c:2606:5: warning: symbol 'ath9k_get_eeprom_antenna_cfg' was not declared. Should it be static?
drivers/net/wireless/ath9k/eeprom.c:2622:4: warning: symbol 'ath9k_hw_get_4k_num_ant_config' was not declared. Should it be static?
drivers/net/wireless/ath9k/eeprom.c:2628:4: warning: symbol 'ath9k_hw_get_def_num_ant_config' was not declared. Should it be static?
drivers/net/wireless/ath9k/eeprom.c:2647:4: warning: symbol 'ath9k_get_num_ant_config' was not declared. Should it be static?
drivers/net/wireless/ath9k/eeprom.c:2790:5: warning: symbol 'ath9k_get_eeprom' was not declared. Should it be static?

drivers/net/wireless/ath9k/calib.c:962:30: warning: symbol 'iq_cal_multi_sample' was not declared. Should it be static?
drivers/net/wireless/ath9k/calib.c:969:30: warning: symbol 'iq_cal_single_sample' was not declared. Should it be static?
drivers/net/wireless/ath9k/calib.c:976:30: warning: symbol 'adc_gain_cal_multi_sample' was not declared. Should it be static?
drivers/net/wireless/ath9k/calib.c:983:30: warning: symbol 'adc_gain_cal_single_sample' was not declared. Should it be static?
drivers/net/wireless/ath9k/calib.c:990:30: warning: symbol 'adc_dc_cal_multi_sample' was not declared. Should it be static?
drivers/net/wireless/ath9k/calib.c:997:30: warning: symbol 'adc_dc_cal_single_sample' was not declared. Should it be static?
drivers/net/wireless/ath9k/calib.c:1004:30: warning: symbol 'adc_init_dc_cal' was not declared. Should it be static?
Signed-off-by: NLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

It's a regression from the patch titled "ath9k: Use mac80211's band
macros and remove enum hal_freq_band". MAC80211 band macros can't be
mapped directly with our hal band enum.
Signed-off-by: NSenthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NSenthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

init values update for various atheros chipsets.
Signed-off-by: NSenthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Split hw.c into more manageable files:
   ani.c
   calib.c
   eeprom.c
   mac.c
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NSujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NSujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This adds the new mac80211 11n ath9k Atheros driver. Only STA support
is currently enabled and tested.
Signed-off-by: NSenthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJack Howarth <howarth@bromo.msbb.uc.edu>
Signed-off-by: NJouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: NSujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: NLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: NPavel Roskin <proski@gnu.org>
Signed-off-by: NVasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>