mac80211: ath10k: Allow to enable the thermal code of ath10k

Some ath10k firmware versions allow to access the chip internal a
temperature sensor and allow to reduce the amount of the time when the card
is allowed to send. The latter is required on devices which tend to
overheat.

An userspace service has to read
/sys/class/ieee80211/phy*/device/hwmon/hwmon*/temp1_input regularly and
then decide how much the device has to be throttled. This can be done by
writing to /sys/class/ieee80211/phy*/device/cooling_device/cur_state. By
default it is not throttled (0) but it can be throttled up to 100(%).

Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com>

package/kernel/mac80211/Makefile

@@ -74,6 +74,7 @@ PKG_CONFIG_DEPENDS:= \
 	CONFIG_PACKAGE_RTLWIFI_DEBUG \
 	CONFIG_ATH9K_SUPPORT_PCOEM \
 	CONFIG_ATH9K_TX99 \
+	CONFIG_ATH10K_THERMAL \
 	CONFIG_ATH_USER_REGD \
 
 include $(INCLUDE_DIR)/package.mk
@@ -325,7 +326,8 @@ define KernelPackage/ath10k
   $(call KernelPackage/mac80211/Default)
   TITLE:=Atheros 802.11ac wireless cards support
   URL:=https://wireless.wiki.kernel.org/en/users/drivers/ath10k
-  DEPENDS+= @PCI_SUPPORT +kmod-ath +@DRIVER_11N_SUPPORT +@DRIVER_11AC_SUPPORT +@DRIVER_11W_SUPPORT
+  DEPENDS+= @PCI_SUPPORT +kmod-ath +@DRIVER_11N_SUPPORT +@DRIVER_11AC_SUPPORT +@DRIVER_11W_SUPPORT \
+	+ATH10K_THERMAL:kmod-hwmon-core +ATH10K_THERMAL:kmod-thermal
   FILES:= \
 	$(PKG_BUILD_DIR)/drivers/net/wireless/ath/ath10k/ath10k_core.ko \
 	$(PKG_BUILD_DIR)/drivers/net/wireless/ath/ath10k/ath10k_pci.ko
@@ -338,6 +340,14 @@ Atheros IEEE 802.11ac family of chipsets. For now only
 PCI is supported.
 endef
 
+define KernelPackage/ath10k/config
+
+       config ATH10K_THERMAL
+               bool "Enable thermal sensors and throttling support"
+               depends on PACKAGE_kmod-ath10k
+
+endef
+
 #Broadcom firmware
 ifneq ($(CONFIG_B43_FW_6_30),)
   PKG_B43_FWV4_NAME:=broadcom-wl
@@ -1625,6 +1635,7 @@ config-$(CONFIG_ATH_USER_REGD) += ATH_USER_REGD
 config-$(CONFIG_ATH9K_SUPPORT_PCOEM) += ATH9K_PCOEM
 config-$(CONFIG_ATH9K_TX99) += ATH9K_TX99
 config-$(CONFIG_ATH9K_UBNTHSR) += ATH9K_UBNTHSR
+config-$(CONFIG_ATH10K_THERMAL) += ATH10K_THERMAL
 
 config-$(call config_package,ath9k-htc) += ATH9K_HTC
 config-$(call config_package,ath10k) += ATH10K ATH10K_PCI

package/kernel/mac80211/patches/080-ath10k_thermal_config.patch

@@ -35,3 +35,13 @@
  int ath10k_thermal_register(struct ath10k *ar);
  void ath10k_thermal_unregister(struct ath10k *ar);
  void ath10k_thermal_event_temperature(struct ath10k *ar, int temperature);
+--- a/local-symbols
++++ b/local-symbols
+@@ -139,6 +139,7 @@ ATH10K_SDIO=
+ ATH10K_USB=
+ ATH10K_DEBUG=
+ ATH10K_DEBUGFS=
++ATH10K_THERMAL=
+ ATH10K_TRACING=
+ ATH10K_DFS_CERTIFIED=
+ WCN36XX=

package/kernel/mac80211/patches/309-v4.16-0002-ath10k-move-spectral-scan-support-under-a-separate-c.patch

@@ -86,6 +86,6 @@ Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
  ATH10K_DEBUG=
  ATH10K_DEBUGFS=
 +ATH10K_SPECTRAL=
+ ATH10K_THERMAL=
  ATH10K_TRACING=
  ATH10K_DFS_CERTIFIED=
- WCN36XX=

package/kernel/mac80211/patches/602-rt2x00-introduce-rt2x00eeprom.patch

@@ -1,6 +1,6 @@
 --- a/local-symbols
 +++ b/local-symbols
-@@ -296,6 +296,7 @@ RT2X00_LIB_FIRMWARE=
+@@ -299,6 +299,7 @@ RT2X00_LIB_FIRMWARE=
  RT2X00_LIB_CRYPTO=
  RT2X00_LIB_LEDS=
  RT2X00_LIB_DEBUGFS=