RevPi Generic PiBridge: Add new base device

This base device can be used as a generic piBridge device to bring the
pibridge functionality to any board. It supports left and right piBridge,
both with ethernet for gateways.

Signed-off-by: Markus Kaupert <m.kaupert@kunbus.com>

src/RevPiDevice.c

@@ -101,6 +101,17 @@ const MODGATECOM_IDResp RevPiFlat_ID_g = {
 	.i16uFeatureDescriptor = MODGATE_feature_IODataExchange
 };
 
+const MODGATECOM_IDResp RevPiGeneric_ID_g = {
+        .i32uSerialnumber = 1,
+        .i16uModulType = KUNBUS_FW_DESCR_TYP_PI_REVPI_GENERIC_PB,
+        .i16uHW_Revision = 1,
+        .i16uSW_Major = 1,
+        .i16uSW_Minor = 0,
+        .i32uSVN_Revision = 0,
+        .i16uFBS_InputLength = 0,
+        .i16uFBS_OutputLength = 0,
+        .i16uFeatureDescriptor = 0
+};
 
 void RevPiDevice_init(void)
 {
@@ -154,6 +165,11 @@ void RevPiDevice_init(void)
 			RevPiDevice_getDev(RevPiDevice_getDevCnt())->i16uInputOffset = 0;
 			RevPiDevice_getDev(RevPiDevice_getDevCnt())->i16uOutputOffset = RevPiFlat_ID_g.i16uFBS_InputLength;
 			break;
+		case REVPI_GENERIC_PB:
+			RevPiDevice_getDev(RevPiDevice_getDevCnt())->sId = RevPiGeneric_ID_g;
+			RevPiDevice_getDev(RevPiDevice_getDevCnt())->i16uInputOffset = 0;
+			RevPiDevice_getDev(RevPiDevice_getDevCnt())->i16uOutputOffset = RevPiGeneric_ID_g.i16uFBS_InputLength;
+			break;
 	}
 
 	RevPiDevice_incDevCnt();

src/piControlMain.c

@@ -180,6 +180,11 @@ static int __init piControlInit(void)
 		piDev_g.machine_type = REVPI_CONNECT_4;
 		piDev_g.pibridge_supported = 1;
 		pr_info("RevPi Connect 4\n");
+	} else if (of_machine_is_compatible("kunbus,revpi-pibridge")) {
+		piDev_g.machine_type = REVPI_GENERIC_PB;
+		piDev_g.pibridge_supported = 1;
+		piDev_g.revpi_gate_supported = 1;
+		pr_info("RevPi Generic PiBridge\n");
 	} else if (of_machine_is_compatible("kunbus,revpi-flat")) {
 		piDev_g.machine_type = REVPI_FLAT;
 		pr_info("RevPi Flat\n");

src/piControlMain.h

@@ -55,6 +55,7 @@ enum revpi_machine {
 	REVPI_CONNECT_SE = 5,
 	REVPI_CORE_SE = 6,
 	REVPI_CONNECT_4 = 7,
+	REVPI_GENERIC_PB = 255,
 };
 
 typedef struct spiControlDev {