[PATCH ath-next v4] wifi: ath12k: add basic hwmon temperature reporting

[Vasanthakumar Thiagarajan]

On 2/23/2026 6:56 PM, Maharaja Kennadyrajan wrote:
> Add initial thermal support by wiring up a per-radio (pdev) hwmon temperature
> sensor backed by the existing WMI pdev temperature command and event.
> When userspace reads the sysfs file temp1_input, the driver sends
> WMI_PDEV_GET_TEMPERATURE_CMDID (tag WMI_TAG_PDEV_GET_TEMPERATURE_CMD) and waits
> for the corresponding WMI_PDEV_TEMPERATURE_EVENTID
> (tag WMI_TAG_PDEV_TEMPERATURE_EVENT) to get the temperature and pdev_id.
> 
> Export the reported value in millidegrees Celsius as required by hwmon.
> The temperature reported is per-radio (pdev). In a multi-radio wiphy under a
> single phy, a separate hwmon device is created for each radio.
> 
> Sample command and output:
> $ cat /sys/devices/pci0000:00/.../ieee80211/phyX/hwmonY/temp1_input
> $ 50000
> 
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.6-01243-QCAHKSWPL_SILICONZ-1
> Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00302-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.115823.3
> 
> Reported-by: kernel test robot <lkp at intel.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202602160145.YQdvbqYY-lkp@intel.com/
> Co-developed-by: Aishwarya R <aishwarya.r at oss.qualcomm.com>
> Signed-off-by: Aishwarya R <aishwarya.r at oss.qualcomm.com>
> Signed-off-by: Maharaja Kennadyrajan <maharaja.kennadyrajan at oss.qualcomm.com>

Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan at oss.qualcomm.com>