T1: port 8812AU phydm I/Q calibration

CMakeLists.txt

@@ -54,6 +54,8 @@ add_library(WiFiDriver
     src/FrameParser.h
     src/HalModule.cpp
     src/HalModule.h
+    src/Iqk8812a.cpp
+    src/Iqk8812a.h
     src/ParsedRadioPacket.cpp
     src/PhyTableLoader.cpp
     src/PhyTableLoader.h

src/EepromManager.h

@@ -38,6 +38,12 @@ class EepromManager {
    * no factory-calibrated reference temperature to compute delta
    * against. */
   uint8_t GetEepromThermalMeter() const { return eeprom_thermal_meter; }
+  /* External PA presence flags from EFUSE — read by IQK to pick the
+   * right AFE setup table. `ExternalPA_2G` is exposed as a public
+   * field on the class; the 5G equivalent lives in the private
+   * section to maintain backwards compatibility with existing
+   * callers. */
+  uint8_t GetExternalPa5G() const { return external_pa_5g; }
 
   /* 8814AU only: read EFUSE and populate rfe_type, PA/LNA types, crystal cap,
    * etc. Must be called AFTER firmware download (pre-fwdl EFUSE access

src/HalModule.cpp

@@ -297,6 +297,16 @@ bool HalModule::rtl8812au_hal_init() {
    * the channel-set path + RtlJaguarDevice background thread. */
   _radioManagementModule->InitPwrTrack();
 
+  /* Arm I/Q calibration so the initial channel-set runs a full IQK
+   * (TX-tone + RX-tone, ~50-100 ms). Mirrors upstream where
+   * `phy_iq_calibrate_8812a` is triggered from the post-init
+   * channel-set callback. Without this, BB 0xc90 + IQK output
+   * registers stay at the BB-init seed instead of the calibrated
+   * IQ-imbalance correction. */
+  if (_eepromManager->version_id.ICType == CHIP_8812) {
+    _radioManagementModule->ArmIQKOnNextChannelSet();
+  }
+
   if (_eepromManager->version_id.RFType == RF_TYPE_1T1R) {
     PHY_BB8812_Config_1T();
   }