staging: rtl8723au: The 8723 only has two paths

Converting the driver from the original RTL provided version, by error
converted the code to use four, which caused all sorts of issues. The
confusion was caused by the RTL driver having support for both two and
four paths, and in some places had RF_PATH_MAX = 3. At the same time
it kept the data structures hard coded for two paths, in particular
the ones matching the efuse data.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723au/hal/rtl8723a_phycfg.c

@@ -462,20 +462,12 @@ phy_InitBBRFRegisterDefinition(struct rtw_adapter *Adapter)
 	pHalData->PHYRegDef[RF_PATH_A].rfintfs = rFPGA0_XAB_RFInterfaceSW;
 	 /*  16 MSBs if read 32-bit from 0x870 (16-bit for 0x872) */
 	pHalData->PHYRegDef[RF_PATH_B].rfintfs = rFPGA0_XAB_RFInterfaceSW;
-	/*  16 LSBs if read 32-bit from 0x874 */
-	pHalData->PHYRegDef[RF_PATH_C].rfintfs = rFPGA0_XCD_RFInterfaceSW;
-	/*  16 MSBs if read 32-bit from 0x874 (16-bit for 0x876) */
-	pHalData->PHYRegDef[RF_PATH_D].rfintfs = rFPGA0_XCD_RFInterfaceSW;
 
 	/*  RF Interface Readback Value */
 	/*  16 LSBs if read 32-bit from 0x8E0 */
 	pHalData->PHYRegDef[RF_PATH_A].rfintfi = rFPGA0_XAB_RFInterfaceRB;
 	/*  16 MSBs if read 32-bit from 0x8E0 (16-bit for 0x8E2) */
 	pHalData->PHYRegDef[RF_PATH_B].rfintfi = rFPGA0_XAB_RFInterfaceRB;
-	/*  16 LSBs if read 32-bit from 0x8E4 */
-	pHalData->PHYRegDef[RF_PATH_C].rfintfi = rFPGA0_XCD_RFInterfaceRB;
-	/*  16 MSBs if read 32-bit from 0x8E4 (16-bit for 0x8E6) */
-	pHalData->PHYRegDef[RF_PATH_D].rfintfi = rFPGA0_XCD_RFInterfaceRB;
 
 	/*  RF Interface Output (and Enable) */
 	/*  16 LSBs if read 32-bit from 0x860 */
@@ -497,14 +489,10 @@ phy_InitBBRFRegisterDefinition(struct rtw_adapter *Adapter)
 	/* BB Band Select */
 	pHalData->PHYRegDef[RF_PATH_A].rfLSSI_Select = rFPGA0_XAB_RFParameter;
 	pHalData->PHYRegDef[RF_PATH_B].rfLSSI_Select = rFPGA0_XAB_RFParameter;
-	pHalData->PHYRegDef[RF_PATH_C].rfLSSI_Select = rFPGA0_XCD_RFParameter;
-	pHalData->PHYRegDef[RF_PATH_D].rfLSSI_Select = rFPGA0_XCD_RFParameter;
 
 	/*  Tx AGC Gain Stage (same for all path. Should we remove this?) */
 	pHalData->PHYRegDef[RF_PATH_A].rfTxGainStage = rFPGA0_TxGainStage;
 	pHalData->PHYRegDef[RF_PATH_B].rfTxGainStage = rFPGA0_TxGainStage;
-	pHalData->PHYRegDef[RF_PATH_C].rfTxGainStage = rFPGA0_TxGainStage;
-	pHalData->PHYRegDef[RF_PATH_D].rfTxGainStage = rFPGA0_TxGainStage;
 
 	/*  Tranceiver A~D HSSI Parameter-1 */
 	/* wire control parameter1 */
@@ -523,63 +511,40 @@ phy_InitBBRFRegisterDefinition(struct rtw_adapter *Adapter)
 		rFPGA0_XAB_SwitchControl; /* TR/Ant switch control */
 	pHalData->PHYRegDef[RF_PATH_B].rfSwitchControl =
 		rFPGA0_XAB_SwitchControl;
-	pHalData->PHYRegDef[RF_PATH_C].rfSwitchControl =
-		rFPGA0_XCD_SwitchControl;
-	pHalData->PHYRegDef[RF_PATH_D].rfSwitchControl =
-		rFPGA0_XCD_SwitchControl;
 
 	/*  AGC control 1 */
 	pHalData->PHYRegDef[RF_PATH_A].rfAGCControl1 = rOFDM0_XAAGCCore1;
 	pHalData->PHYRegDef[RF_PATH_B].rfAGCControl1 = rOFDM0_XBAGCCore1;
-	pHalData->PHYRegDef[RF_PATH_C].rfAGCControl1 = rOFDM0_XCAGCCore1;
-	pHalData->PHYRegDef[RF_PATH_D].rfAGCControl1 = rOFDM0_XDAGCCore1;
 
 	/*  AGC control 2 */
 	pHalData->PHYRegDef[RF_PATH_A].rfAGCControl2 = rOFDM0_XAAGCCore2;
 	pHalData->PHYRegDef[RF_PATH_B].rfAGCControl2 = rOFDM0_XBAGCCore2;
-	pHalData->PHYRegDef[RF_PATH_C].rfAGCControl2 = rOFDM0_XCAGCCore2;
-	pHalData->PHYRegDef[RF_PATH_D].rfAGCControl2 = rOFDM0_XDAGCCore2;
 
 	/*  RX AFE control 1 */
 	pHalData->PHYRegDef[RF_PATH_A].rfRxIQImbalance = rOFDM0_XARxIQImbalance;
 	pHalData->PHYRegDef[RF_PATH_B].rfRxIQImbalance = rOFDM0_XBRxIQImbalance;
-	pHalData->PHYRegDef[RF_PATH_C].rfRxIQImbalance = rOFDM0_XCRxIQImbalance;
-	pHalData->PHYRegDef[RF_PATH_D].rfRxIQImbalance = rOFDM0_XDRxIQImbalance;
 
 	/*  RX AFE control 1 */
 	pHalData->PHYRegDef[RF_PATH_A].rfRxAFE = rOFDM0_XARxAFE;
 	pHalData->PHYRegDef[RF_PATH_B].rfRxAFE = rOFDM0_XBRxAFE;
-	pHalData->PHYRegDef[RF_PATH_C].rfRxAFE = rOFDM0_XCRxAFE;
-	pHalData->PHYRegDef[RF_PATH_D].rfRxAFE = rOFDM0_XDRxAFE;
 
 	/*  Tx AFE control 1 */
 	pHalData->PHYRegDef[RF_PATH_A].rfTxIQImbalance = rOFDM0_XATxIQImbalance;
 	pHalData->PHYRegDef[RF_PATH_B].rfTxIQImbalance = rOFDM0_XBTxIQImbalance;
-	pHalData->PHYRegDef[RF_PATH_C].rfTxIQImbalance = rOFDM0_XCTxIQImbalance;
-	pHalData->PHYRegDef[RF_PATH_D].rfTxIQImbalance = rOFDM0_XDTxIQImbalance;
 
 	/*  Tx AFE control 2 */
 	pHalData->PHYRegDef[RF_PATH_A].rfTxAFE = rOFDM0_XATxAFE;
 	pHalData->PHYRegDef[RF_PATH_B].rfTxAFE = rOFDM0_XBTxAFE;
-	pHalData->PHYRegDef[RF_PATH_C].rfTxAFE = rOFDM0_XCTxAFE;
-	pHalData->PHYRegDef[RF_PATH_D].rfTxAFE = rOFDM0_XDTxAFE;
 
 	/*  Tranceiver LSSI Readback SI mode */
 	pHalData->PHYRegDef[RF_PATH_A].rfLSSIReadBack = rFPGA0_XA_LSSIReadBack;
 	pHalData->PHYRegDef[RF_PATH_B].rfLSSIReadBack = rFPGA0_XB_LSSIReadBack;
-	pHalData->PHYRegDef[RF_PATH_C].rfLSSIReadBack = rFPGA0_XC_LSSIReadBack;
-	pHalData->PHYRegDef[RF_PATH_D].rfLSSIReadBack = rFPGA0_XD_LSSIReadBack;
 
 	/*  Tranceiver LSSI Readback PI mode */
 	pHalData->PHYRegDef[RF_PATH_A].rfLSSIReadBackPi =
 		TransceiverA_HSPI_Readback;
 	pHalData->PHYRegDef[RF_PATH_B].rfLSSIReadBackPi =
 		TransceiverB_HSPI_Readback;
-	/* pHalData->PHYRegDef[RF_PATH_C].rfLSSIReadBackPi =
-	   rFPGA0_XC_LSSIReadBack; */
-	/* pHalData->PHYRegDef[RF_PATH_D].rfLSSIReadBackPi =
-	   rFPGA0_XD_LSSIReadBack; */
-
 }
 
 /*  The following is for High Power PA */

drivers/staging/rtl8723au/hal/rtl8723a_rf6052.c

@@ -434,11 +434,9 @@ static int phy_RF6052_Config_ParaFile(struct rtw_adapter *Adapter)
 		/*----Store original RFENV control type----*/
 		switch (eRFPath) {
 		case RF_PATH_A:
-		case RF_PATH_C:
 			u4RegValue = PHY_QueryBBReg(Adapter, pPhyReg->rfintfs, bRFSI_RFENV);
 			break;
 		case RF_PATH_B:
-		case RF_PATH_D:
 			u4RegValue = PHY_QueryBBReg(Adapter, pPhyReg->rfintfs, bRFSI_RFENV<<16);
 			break;
 		}
@@ -468,20 +466,14 @@ static int phy_RF6052_Config_ParaFile(struct rtw_adapter *Adapter)
 			if (HAL_STATUS_FAILURE == ODM_ConfigRFWithHeaderFile23a(&pHalData->odmpriv, (enum RF_RADIO_PATH)eRFPath, (enum RF_RADIO_PATH)eRFPath))
 				rtStatus = _FAIL;
 			break;
-		case RF_PATH_C:
-			break;
-		case RF_PATH_D:
-			break;
 		}
 
 		/*----Restore RFENV control type----*/;
 		switch (eRFPath) {
 		case RF_PATH_A:
-		case RF_PATH_C:
 			PHY_SetBBReg(Adapter, pPhyReg->rfintfs, bRFSI_RFENV, u4RegValue);
 			break;
 		case RF_PATH_B:
-		case RF_PATH_D:
 			PHY_SetBBReg(Adapter, pPhyReg->rfintfs, bRFSI_RFENV<<16, u4RegValue);
 			break;
 		}

drivers/staging/rtl8723au/include/Hal8723APhyCfg.h

@@ -60,8 +60,6 @@ enum HW90_BLOCK {
 enum RF_RADIO_PATH {
 	RF_PATH_A = 0,			/* Radio Path A */
 	RF_PATH_B = 1,			/* Radio Path B */
-	RF_PATH_C = 2,			/* Radio Path C */
-	RF_PATH_D = 3,			/* Radio Path D */
 	RF_PATH_MAX			/* Max RF number 90 support */
 };