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path: root/drivers/net/wireless/ath/ath9k/ar9002_calib.c
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* ath9k: ar9271_hw_pa_cal: use REG_READ_ARRAYOleksij Rempel2015-03-301-2/+1
| | | | | | | | | insted of reading each register separatly and waste 4ms on each operation, we can use one shot read. Signed-off-by: Oleksij Rempel <linux@rempel-privat.de> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
* ath9k: ar9271_hw_pa_cal: use RMW bufferOleksij Rempel2015-03-301-2/+6
| | | | | Signed-off-by: Oleksij Rempel <linux@rempel-privat.de> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
* ath9k: ar9271_hw_pa_cal: use proper makroses.Oleksij Rempel2015-03-301-24/+19
| | | | | Signed-off-by: Oleksij Rempel <linux@rempel-privat.de> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
* ath9k: ar9271_hw_pa_cal - use defs instead of magin numbersOleksij Rempel2015-03-301-17/+18
| | | | | | | | This function uses mixed styles for register names/numbers which is make harder reading and optimisation. Signed-off-by: Oleksij Rempel <linux@rempel-privat.de> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
* ath9k_hw: start initial NF calibration after PA calibration on <AR9003Felix Fietkau2014-10-271-0/+2
| | | | | | | This makes the initial NF calibration less likely to fail. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: do not run NF and periodic calibration at the same timeFelix Fietkau2014-10-271-15/+14
| | | | | | | | It can cause inconsistent calibration results or in some cases turn the radio deaf. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: restart hardware after noise floor calibration failureFelix Fietkau2014-10-271-5/+6
| | | | | | | | | When NF calibration fails, the radio often becomes deaf. The usual hardware hang checks do not detect this, so it's better to issue a reset when that happens. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: remove IS_CHAN_B()Felix Fietkau2013-10-141-5/+2
| | | | | | | | | Hardware 802.11b-only mode isn't supported by the driver (the device is configured for 802.11n/g instead). Simplify the code by removing checks for it. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Use bitops for calibration flagsSujith Manoharan2013-09-261-2/+2
| | | | | Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Show actual timeout value in failed calibration messages.Robert Shade2013-03-271-3/+6
| | | | | | | | The messages are currently hard coding "1ms", which does not match the actual timeout being used. Signed-off-by: Robert Shade <robert.shade@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath: Convert ath_dbg(bar, ATH_DBG_<FOO>, to ath_dbg(bar, FOOJoe Perches2011-12-191-73/+61
| | | | | | | | | | | | | | Add ATH_DBG_ to macros to shorten the uses and reduce the line count. Coalesce ath_dbg formats. Add missing spaces to coalesced formats. Add missing newline terminations to ath_dbg formats. Align ath_dbg arguments where appropriate. Standardize ath_dbg formats without periods. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: trivial: cosmetic fix in calibration debug logNikolay Martynov2011-12-071-1/+1
| | | | | | | Add missed space and change typo in calibration debugging log. Signed-off-by: Nikolay Martynov <mar.kolya@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: Fix noise floor calibration timeout on fast channel changeRajkumar Manoharan2011-11-021-4/+0
| | | | | | | | | | | During the fast channel change noise floor values are being loaded twice at init_cal and after channel_change. The commit "ath9k_hw: Improve fast channel change for AR9003 chips" overlooked it that caused failure to load nf while doing bgscan. This patch performs noise floor calibration after the fast and full reset. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Merge branch 'master' of git://git.infradead.org/users/linville/wirelessJohn W. Linville2011-09-201-1/+2
|\ | | | | | | | | | | | | | | Conflicts: drivers/net/wireless/iwlwifi/iwl-pci.c drivers/net/wireless/iwlwifi/iwl-trans-pcie-tx.c drivers/net/wireless/rt2x00/rt2800usb.c drivers/net/wireless/wl12xx/main.c
| * ath9k_hw: fix calibration on 5 ghzFelix Fietkau2011-08-301-1/+2
| | | | | | | | | | | | | | | | | | | | | | ADC calibrations cannot run on 5 GHz with fast clock enabled. They need to be disabled, otherwise they'll hang and IQ mismatch calibration will not be run either. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Reported-by: Adrian Chadd <adrian@freebsd.org> Cc: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k: load noise floor from history after the full chip resetRajkumar Manoharan2011-09-191-0/+1
|/ | | | | | | | | | | Currently during the full reset, the nf calibration is always restarted from the defaults. The noise floor history buffers are never be used again after the scan and ath reset. This patch ensures that nf histories are always be used that helps to improve the signal quality on congested environment Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix AR9287 calibrationAdrian Chadd2011-05-271-1/+1
| | | | | | | | | | The AR9287 calibration code was not being called because of an incorrect MAC revision check. This forced the AR9287 to use the AR9285 initial calibration code and bypass the AR9287 code entirely. Signed-off-by: Adrian Chadd <adrian@freebsd.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Drag the driver to the year 2011Sujith Manoharan2011-05-191-1/+1
| | | | | | | The Times They Are a-Changin'. Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: Fix throughput drops in HT40 mode for AR9287 chipsRajkumar Manoharan2011-03-301-8/+35
| | | | | | | | | Doing adc gain calibration for AR9287 chips is causing throughput drops in HT40 mode. Remove ADC Gain from supported calibration list. Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Merge branch 'master' of ↵David S. Miller2011-01-271-1/+4
|\ | | | | | | ssh://master.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6
| * ath9k_hw: fix carrier leakage calibration for AR9271Rajkumar Manoharan2011-01-191-1/+4
| | | | | | | | | | | | | | | | AR9285 carrier leakage calibration related workaround on high temperature is not applicable for AR9271. Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | ath9k_hw: do PA offset calibration only on longcal intervalRajkumar Manoharan2011-01-171-5/+5
|/ | | | | | | | | | | | | | | | | | | | | | | The power detector adc offset calibration has to be done on 4 minutes interval (longcal * pa_skip_count). But the commit "ath9k_hw: fix a noise floor calibration related race condition" makes the PA calibration executed more frequently beased on nfcal_pending value. Running PAOffset calibration lesser than longcal interval doesn't help anything and the worse part is that it causes NF load timeouts and RX deaf conditions. In a very noisy environment, where the distance b/w AP & station is ~10 meter and running a downlink udp traffic with frequent background scan causes "Timeout while waiting for nf to load: AR_PHY_AGC_CONTROL=0x40d1a" and moves the chip into deaf state. This issue was originaly reported in Android platform where the network-manager application does bgscan more frequently on AR9271 chips. (AR9285 family usb device). Cc: stable@kernel.org Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: Fix calibration for AR9287 devicesSujith Manoharan2011-01-101-0/+3
| | | | | | | | | AR9287 based devices have issues with ADC gain calibration which would cause uplink throughput drops in HT40 mode. Remove ADC gain from the supported calibration algorithms. Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath: Convert ath_print to ath_dbgJoe Perches2010-12-071-112/+108
| | | | | | | | | | | Remove ath/debug.h and the includes of these files. Coalesce long formats. Correct a few misspellings and missing "\n"s from these logging messages. Remove unnecessary trailing space before a newline. Remove ARRAY_SIZE casts, use printf type %zu Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: clean up register write bufferingFelix Fietkau2010-10-061-1/+0
| | | | | | | | | | Throughout the code, DISABLE_REGWRITE_BUFFER is always called right after REGWRITE_BUFFER_FLUSH. Since that's unlikely to change any time soon, that makes keeping those ops separate rather pointless, as it only increases code size and line number counts. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: clean up calibration flagsFelix Fietkau2010-10-061-31/+20
| | | | | | | | | | | | | | The calibration actual calibration flags are only used by the per chip family source files, so it makes more sense to define them in those files instead of globally. That way the code has to test for less flags. Also instead of using a separate callback for testing whether a particular calibration type is supported, simply adjust ah->supp_cals in the calibration init which is called right after the hardware reset, before any of the calibrations are run. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: remove some useless calibration dataFelix Fietkau2010-10-051-16/+0
| | | | | | | | The percal struct and bitmask for the initial DC calibration are not used anywhere, so they can be removed. Signed-off-by: Felix Fietkau <nbd@openwrt.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: simplify revision checks for AR9287Felix Fietkau2010-09-271-2/+2
| | | | | | | | Since AR9287 v1.0 was never sold (and the initvals removed), its revision checks can be simplified similar to AR9280 Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: simplify revision checks for AR9285Felix Fietkau2010-09-271-10/+1
| | | | | | | | Since AR9285 v1.0 and v1.1 were never sold (and the initvals removed), its revision checks can be simplified similar to AR9280 Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: simplify revision checks for AR9280Felix Fietkau2010-09-271-3/+3
| | | | | | | | | Since AR9280 v1.0 was never sold (and the initvals removed), v1.0 specific revision checks can be removed and the 'v2.0 or later' check can be simplified to a check for AR9280 or later. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: fix a noise floor calibration related race conditionFelix Fietkau2010-08-041-11/+21
| | | | | | | | | | | | | | On AR5008-AR9002, other forms of calibration must not be started while the noise floor calibration is running, as this can create invalid readings which were sometimes not even recoverable by any further calibration attempts. This patch also ensures that the result of noise floor measurements are processed faster and also allows the result of the initial calibration on reset to make it into the NF history buffer Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: clean up per-channel calibration dataFelix Fietkau2010-08-041-3/+5
| | | | | | | | | | | | | | | | | | | | | | | The noise floor history buffer is currently not kept per channel, which can lead to problems when changing channels from a clean channel to a noisy one. Also when switching from HT20 to HT40, the noise floor history buffer is full of measurements, but none of them contain data for the extension channel, which it needs quite a bit of time to recover from. This patch puts all the per-channel calibration data into a single data structure, and gives the the driver control over whether that is used per-channel or even not used for some channels. For ath9k_htc, I decided to keep this per-channel in order to avoid creating regressions. For ath9k, the data is kept only for the operating channel, which saves some space. ath9k_hw takes care of wiping old data when the operating channel or its channel flags change. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: clean up and fix initial noise floor calibrationFelix Fietkau2010-08-041-3/+2
| | | | | | | | | | | | On AR9003 the initial noise floor calibration is currently triggered at the end of the reset without allowing the hardware to update the baseband settings. This could potentially make scans in noisy environments a bit more unreliable, so use the same calibration sequence that is used on AR9002. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Acked-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: fix a sign error in the IQ calibration codeFelix Fietkau2010-07-121-1/+1
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Cc: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: Use buffered register writesSujith2010-04-161-0/+5
| | | | | | | | | | | This patch adds macros at certain places which could be optimized for multiple register writes. The performance of ath9k_htc improves considerably, especially reducing the latency involved in a scan run. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: fill in the callbacks for calibration for AR9003Luis R. Rodriguez2010-04-161-0/+2
| | | | | Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: split calib code by hardware familiesLuis R. Rodriguez2010-04-161-0/+993
Calibration code touches phy registers and since these change the calibration code needs to be abstracted. Noise floor calibration is the only thing remaining but since the remaining calls only touch the AR_PHY_AGC_CONTROL register we'll just define that register conditionally, that will be done separately. The goal is to remove the dependency of ar9002_phy.h on calib.c This also adds stubs to be filled for AR9003 calibration code. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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