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path: root/drivers/net/wireless/ath/ath10k/thermal.c
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* ath10k: fix hwmon temperature input unitsRajkumar Manoharan2015-01-15
| | | | | | | | | To be compliant with the hwmon interface the unit needs to be millidegree Celsius. Fix that. Reported-by: Matthias Kaehlcke <mka@google.com> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
* ath10k: fix duration calculation for quiet paramRajkumar Manoharan2015-01-15
| | | | | | | | | | | | The duty cycle (% of quiet duration) is used to put the device in quiet mode for the given period. Currently the quiet duration is wrongly calculated which results in not enabling quiet mode. Fix the calculation as below duration = (period * duty cycle) / 100 Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
* ath10k: fix config_enabled check for hwmonRajkumar Manoharan2015-01-13
| | | | | | | | Because of wrong macro check in commit 96bba98393f9 ("ath10k: fix build error when hwmon is off"), hwmon never be enabled. Fix that. Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
* ath10k: fix build error when hwmon is offKalle Valo2015-01-09
| | | | | | | | | | | | kbuild reported a linking error: ERROR: "devm_hwmon_device_register_with_groups" [drivers/net/wireless/ath/ath10k/ath10k_core.ko] undefined! Fix it by returning early and letting the compiler to optimise out the function call. Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
* ath10k: add thermal sensor device supportRajkumar Manoharan2014-12-23
| | | | | | | | | | | | | | | Temperature sensor generates electrical analog voltage from temperature of each chain. The analog voltage is converted to digital value through ADC. For reading temperature values fom user space, hw monitoring device is used. Whenever the user requests for current temperature, the driver sends WMI command and wait for response. For reading temperature, cat /sys/class/ieee80211/phy*/device/hwmon/hwmon2/temp1_input Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
* ath10k: add thermal cooling device supportRajkumar Manoharan2014-12-23
Thermal cooling device support is added to control the temperature by throttling the data transmission for the given duration. Throttling is done using hw MAC quiet time setting. Period, duration and offset from TBTT can be set up to quiet the MAC transmits for the required duty cycle (% of quiet duration). The thermal device allows user to configure duty cycle. The quiet params are derived as follows. period = max(25TU, beacon interval / number of bss) duration = period * duty cycle / 100 Quiet mode can be disabled by setting the duty cycle to 0. The cooling device can be found under /sys/class/thermal/cooling_deviceX/. Corresponding soft link to this device can be found under phy folder. /sys/class/ieee80211/phy*/device/cooling_device. To set duty cycle as 40%, echo 40 >/sys/class/ieee80211/phy*/device/cooling_device/cur_state Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>