Init the new driver

drivers/Makefile.am

@@ -195,7 +195,7 @@ LIBUSB_IMPL = libusb1.c
 endif
 USBHID_UPS_SUBDRIVERS = apc-hid.c arduino-hid.c belkin-hid.c cps-hid.c explore-hid.c \
  liebert-hid.c mge-hid.c powercom-hid.c tripplite-hid.c idowell-hid.c \
- openups-hid.c powervar-hid.c delta_ups-hid.c ever-hid.c legrand-hid.c salicru-hid.c
+ openups-hid.c powervar-hid.c delta_ups-hid.c ever-hid.c legrand-hid.c salicru-hid.c rpi-hid.c
 usbhid_ups_SOURCES = usbhid-ups.c libhid.c $(LIBUSB_IMPL) hidparser.c	\
  usb-common.c $(USBHID_UPS_SUBDRIVERS)
 usbhid_ups_LDADD = $(LDADD_DRIVERS) $(LIBUSB_LIBS) -lm
@@ -338,7 +338,7 @@ dist_noinst_HEADERS = apc-mib.h apc-iem-mib.h apc-hid.h arduino-hid.h baytech-mi
  xppc-mib.h huawei-mib.h eaton-ats16-nmc-mib.h eaton-ats16-nm2-mib.h apc-ats-mib.h raritan-px2-mib.h eaton-ats30-mib.h \
  apc-pdu-mib.h ever-hid.h eaton-pdu-genesis2-mib.h eaton-pdu-marlin-mib.h eaton-pdu-marlin-helpers.h \
  eaton-pdu-pulizzi-mib.h eaton-pdu-revelation-mib.h emerson-avocent-pdu-mib.h legrand-hid.h \
- hpe-pdu-mib.h powervar-hid.h delta_ups-hid.h generic_modbus.h salicru-hid.h adelsystem_cbi.h
+ hpe-pdu-mib.h powervar-hid.h delta_ups-hid.h generic_modbus.h salicru-hid.h adelsystem_cbi.h rpi-hid.h
 
 # Define a dummy library so that Automake builds rules for the
 # corresponding object files.  This library is not actually built,

drivers/rpi-hid.c

@@ -0,0 +1,123 @@
+/* rpi-hid.c - subdriver to monitor RPi USB/HID devices with NUT
+ *
+ *  Copyright (C)
+ *  2003 - 2012	Arnaud Quette <ArnaudQuette@Eaton.com>
+ *  2005 - 2006	Peter Selinger <selinger@users.sourceforge.net>
+ *  2008 - 2009	Arjen de Korte <adkorte-guest@alioth.debian.org>
+ *  2013 Charles Lepple <clepple+nut@gmail.com>
+ *
+ *  TODO: Add year and name for new subdriver author (contributor)
+ *  Mention in docs/acknowledgements.txt if this is a vendor contribution
+ *
+ *  Note: this subdriver was initially generated as a "stub" by the
+ *  gen-usbhid-subdriver script. It must be customized.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "usbhid-ups.h"
+#include "rpi-hid.h"
+#include "main.h"	/* for getval() */
+#include "usb-common.h"
+
+#define RPI_HID_VERSION	"RPi HID 0.1"
+/* FIXME: experimental flag to be put in upsdrv_info */
+
+/* RPi */
+#define RPI_VENDORID	0x051D
+
+/* USB IDs device table */
+static usb_device_id_t rpi_usb_device_table[] = {
+	/* RPi */
+	{ USB_DEVICE(RPI_VENDORID, 0x0004), NULL },
+
+	/* Terminating entry */
+	{ 0, 0, NULL }
+};
+
+
+/* --------------------------------------------------------------- */
+/*      Vendor-specific usage table */
+/* --------------------------------------------------------------- */
+
+/* RPI usage table */
+static usage_lkp_t rpi_usage_lkp[] = {
+	{ NULL, 0 }
+};
+
+static usage_tables_t rpi_utab[] = {
+	rpi_usage_lkp,
+	hid_usage_lkp,
+	NULL,
+};
+
+/* --------------------------------------------------------------- */
+/* HID2NUT lookup table                                            */
+/* --------------------------------------------------------------- */
+
+static hid_info_t rpi_hid2nut[] = {
+
+
+	/* end of structure. */
+	{ NULL, 0, 0, NULL, NULL, NULL, 0, NULL }
+};
+
+static const char *rpi_format_model(HIDDevice_t *hd) {
+	return hd->Product;
+}
+
+static const char *rpi_format_mfr(HIDDevice_t *hd) {
+	return hd->Vendor ? hd->Vendor : "RPi";
+}
+
+static const char *rpi_format_serial(HIDDevice_t *hd) {
+	return hd->Serial;
+}
+
+/* this function allows the subdriver to "claim" a device: return 1 if
+ * the device is supported by this subdriver, else 0. */
+static int rpi_claim(HIDDevice_t *hd)
+{
+	int status = is_usb_device_supported(rpi_usb_device_table, hd);
+
+	switch (status)
+	{
+	case POSSIBLY_SUPPORTED:
+		/* by default, reject, unless the productid option is given */
+		if (getval("productid")) {
+			return 1;
+		}
+		possibly_supported("RPi", hd);
+		return 0;
+
+	case SUPPORTED:
+		return 1;
+
+	case NOT_SUPPORTED:
+	default:
+		return 0;
+	}
+}
+
+subdriver_t rpi_subdriver = {
+	RPI_HID_VERSION,
+	rpi_claim,
+	rpi_utab,
+	rpi_hid2nut,
+	rpi_format_model,
+	rpi_format_mfr,
+	rpi_format_serial,
+	fix_report_desc,	/* may optionally be customized, see cps-hid.c for example */
+};

drivers/rpi-hid.h

@@ -0,0 +1,30 @@
+/* rpi-hid.h - subdriver to monitor RPi USB/HID devices with NUT
+ *
+ *  Copyright (C)
+ *  2003 - 2009	Arnaud Quette <ArnaudQuette@Eaton.com>
+ *  2005 - 2006	Peter Selinger <selinger@users.sourceforge.net>
+ *  2008 - 2009	Arjen de Korte <adkorte-guest@alioth.debian.org>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef RPI_HID_H
+#define RPI_HID_H
+
+#include "usbhid-ups.h"
+
+extern subdriver_t rpi_subdriver;
+
+#endif /* RPI_HID_H */

drivers/usbhid-ups.c

@@ -54,6 +54,7 @@
 	#include "openups-hid.h"
 	#include "powercom-hid.h"
 	#include "powervar-hid.h"
+	#include "rpi-hid.h"
 	#include "salicru-hid.h"
 	#include "tripplite-hid.h"
 #endif
@@ -77,6 +78,7 @@ static subdriver_t *subdriver_list[] = {
 	&openups_subdriver,
 	&powercom_subdriver,
 	&powervar_subdriver,
+	&rpi_subdriver,
 	&salicru_subdriver,
 	&tripplite_subdriver,
 #endif