Add hwmon support for temp1_input attribute, which will expose package temperature in millidegree Celsius. With this in place we can monitor package temperature using lm-sensors tool. $ sensors i915-pci-0300 Adapter: PCI adapter in0: 990.00 mV fan1: 1260 RPM temp1: +45.0°C power1: N/A (max = 35.00 W) energy1: 12.62 kJ v2: Use switch case (Anshuman) v3: Comment adjustment (Riana) Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/11276 Signed-off-by: Raag Jadav <raag.jadav@intel.com> Reviewed-by: Anshuman Gupta <anshuman.gupta@intel.com> Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Reviewed-by: Riana Tauro <riana.tauro@intel.com> Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240910105242.3357276-1-raag.jadav@intel.com