diff --git a/Makefile.am b/Makefile.am
index e6899e97..74806143 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -3,30 +3,22 @@ ACLOCAL_AMFLAGS = -I m4
 
 JANSSON_INCLUDES= -I$(top_builddir)/compat/jansson-2.5/src -I$(top_srcdir)/compat/jansson-2.5/src
 
-if WANT_USBUTILS
-USBUTILS_INCLUDES = -I$(top_builddir)/compat/libusb-1.0/libusb -I$(top_srcdir)/compat/libusb-1.0/libusb
-else
-USBUTILS_INCLUDES =
-endif
-
 EXTRA_DIST	= example.conf m4/gnulib-cache.m4 linux-usb-cgminer \
 		  ADL_SDK/readme.txt api-example.php miner.php	\
 		  API.class API.java api-example.c windows-build.txt \
-		  bitstreams/* API-README FPGA-README SCRYPT-README \
-		  bitforce-firmware-flash.c hexdump.c ASIC-README \
-		  01-cgminer.rules GPU-README
+		  bitstreams/* API-README SCRYPT-README \
+		  hexdump.c GPU-README
 
 SUBDIRS		= lib compat ccan
 
-INCLUDES	= $(PTHREAD_FLAGS) -fno-strict-aliasing $(JANSSON_INCLUDES) $(USBUTILS_INCLUDES)
+INCLUDES	= $(PTHREAD_FLAGS) -fno-strict-aliasing $(JANSSON_INCLUDES)
 
 bin_PROGRAMS	= cgminer
 
 cgminer_LDFLAGS	= $(PTHREAD_FLAGS)
 cgminer_LDADD	= $(DLOPEN_FLAGS) @LIBCURL_LIBS@ @JANSSON_LIBS@ @PTHREAD_LIBS@ \
 		  @OPENCL_LIBS@ @NCURSES_LIBS@ @PDCURSES_LIBS@ @WS2_LIBS@ \
-		  @LIBUSB_LIBS@ @MM_LIBS@ @RT_LIBS@ \
-		  @MATH_LIBS@ lib/libgnu.a ccan/libccan.a
+		  @MM_LIBS@ @RT_LIBS@ @MATH_LIBS@ lib/libgnu.a ccan/libccan.a
 
 if HAVE_WINDOWS
 cgminer_CPPFLAGS = -I$(top_builddir)/lib -I$(top_srcdir)/lib @OPENCL_FLAGS@
@@ -52,56 +44,6 @@ cgminer_SOURCES += driver-opencl.h driver-opencl.c
 cgminer_SOURCES += ocl.c ocl.h findnonce.c findnonce.h
 cgminer_SOURCES += adl.c adl.h adl_functions.h
 cgminer_SOURCES += *.cl
-
-if HAS_SCRYPT
 cgminer_SOURCES += scrypt.c scrypt.h
-endif
-
-endif
-
-if NEED_FPGAUTILS
-cgminer_SOURCES += fpgautils.c fpgautils.h
-endif
-
-if WANT_USBUTILS
-cgminer_SOURCES += usbutils.c usbutils.h
-endif
-
-# Device drivers
-if HAS_AVALON
-cgminer_SOURCES += driver-avalon.c driver-avalon.h
-endif
-
-if HAS_KNC
-cgminer_SOURCES += driver-knc-spi-fpga.c
-endif
-
-if HAS_BFLSC
-cgminer_SOURCES += driver-bflsc.c driver-bflsc.h
-endif
-
-if HAS_BITFORCE
-cgminer_SOURCES += driver-bitforce.c
-endif
-
-if HAS_HASHFAST
-cgminer_SOURCES += driver-hashfast.c driver-hashfast.h hf_protocol.h
-endif
-
-if HAS_BITFURY
-cgminer_SOURCES += driver-bitfury.c driver-bitfury.h
-endif
-
-if HAS_ICARUS
-cgminer_SOURCES += driver-icarus.c
-endif
-
-if HAS_KLONDIKE
-cgminer_SOURCES += driver-klondike.c
-endif
 
-if HAS_MODMINER
-cgminer_SOURCES += driver-modminer.c
-bitstreamsdir = $(bindir)/bitstreams
-dist_bitstreams_DATA = $(top_srcdir)/bitstreams/*
 endif
diff --git a/compat/Makefile.am b/compat/Makefile.am
index 4cd32d2a..52e5bbad 100644
--- a/compat/Makefile.am
+++ b/compat/Makefile.am
@@ -1,8 +1,3 @@
 
 SUBDIRS	= jansson-2.5
 
-if WANT_USBUTILS
-if WANT_STATIC_LIBUSB
-SUBDIRS += libusb-1.0
-endif
-endif
diff --git a/configure.ac b/configure.ac
index 49754496..c5bde13c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -191,7 +191,7 @@ AC_ARG_ENABLE([adl],
 	[adl=$enableval]
 	)
 
-scrypt="no"
+scrypt="yes"
 
 if test "$found_opencl" = 1; then
 	if test "x$adl" != xno; then
@@ -221,105 +221,6 @@ fi
 
 AM_CONDITIONAL([HAS_SCRYPT], [test x$scrypt = xyes])
 
-avalon="no"
-
-AC_ARG_ENABLE([avalon],
-	[AC_HELP_STRING([--enable-avalon],[Compile support for Avalon (default disabled)])],
-	[avalon=$enableval]
-	)
-if test "x$avalon" = xyes; then
-	AC_DEFINE([USE_AVALON], [1], [Defined to 1 if Avalon support is wanted])
-fi
-AM_CONDITIONAL([HAS_AVALON], [test x$avalon = xyes])
-
-knc="no"
-
-AC_ARG_ENABLE([knc],
-	[AC_HELP_STRING([--enable-knc],[Compile support for KnC miners (default disabled)])],
-	[knc=$enableval]
-	)
-if test "x$knc" = xyes; then
-	AC_DEFINE([USE_KNC], [1], [Defined to 1 if KnC miner support is wanted])
-fi
-AM_CONDITIONAL([HAS_KNC], [test x$knc = xyes])
-
-bflsc="no"
-
-AC_ARG_ENABLE([bflsc],
-	[AC_HELP_STRING([--enable-bflsc],[Compile support for BFL ASICs (default disabled)])],
-	[bflsc=$enableval]
-	)
-if test "x$bflsc" = xyes; then
-	AC_DEFINE([USE_BFLSC], [1], [Defined to 1 if BFL ASIC support is wanted])
-fi
-AM_CONDITIONAL([HAS_BFLSC], [test x$bflsc = xyes])
-
-bitforce="no"
-
-AC_ARG_ENABLE([bitforce],
-	[AC_HELP_STRING([--enable-bitforce],[Compile support for BitForce FPGAs (default disabled)])],
-	[bitforce=$enableval]
-	)
-if test "x$bitforce" = xyes; then
-	AC_DEFINE([USE_BITFORCE], [1], [Defined to 1 if BitForce support is wanted])
-fi
-AM_CONDITIONAL([HAS_BITFORCE], [test x$bitforce = xyes])
-
-bitfury="no"
-
-AC_ARG_ENABLE([bitfury],
-	[AC_HELP_STRING([--enable-bitfury],[Compile support for BitFury ASICs (default disabled)])],
-	[bitfury=$enableval]
-	)
-if test "x$bitfury" = xyes; then
-	AC_DEFINE([USE_BITFURY], [1], [Defined to 1 if BitFury support is wanted])
-fi
-AM_CONDITIONAL([HAS_BITFURY], [test x$bitfury = xyes])
-
-hashfast="no"
-
-AC_ARG_ENABLE([hashfast],
-	[AC_HELP_STRING([--enable-hashfast],[Compile support for Hashfast (default disabled)])],
-	[hashfast=$enableval]
-	)
-if test "x$hashfast" = xyes; then
-	AC_DEFINE([USE_HASHFAST], [1], [Defined to 1 if Hashfast support is wanted])
-fi
-AM_CONDITIONAL([HAS_HASHFAST], [test x$hashfast = xyes])
-
-icarus="no"
-
-AC_ARG_ENABLE([icarus],
-	[AC_HELP_STRING([--enable-icarus],[Compile support for Icarus (default disabled)])],
-	[icarus=$enableval]
-	)
-if test "x$icarus" = xyes; then
-	AC_DEFINE([USE_ICARUS], [1], [Defined to 1 if Icarus support is wanted])
-fi
-AM_CONDITIONAL([HAS_ICARUS], [test x$icarus = xyes])
-
-klondike="no"
-
-AC_ARG_ENABLE([klondike],
-	[AC_HELP_STRING([--enable-klondike],[Compile support for Klondike (default disabled)])],
-	[klondike=$enableval]
-	)
-if test "x$klondike" = xyes; then
-	AC_DEFINE([USE_KLONDIKE], [1], [Defined to 1 if Klondike support is wanted])
-fi
-AM_CONDITIONAL([HAS_KLONDIKE], [test x$klondike = xyes])
-
-modminer="no"
-
-AC_ARG_ENABLE([modminer],
-	[AC_HELP_STRING([--enable-modminer],[Compile support for ModMiner FPGAs(default disabled)])],
-	[modminer=$enableval]
-	)
-if test "x$modminer" = xyes; then
-	AC_DEFINE([USE_MODMINER], [1], [Defined to 1 if ModMiner support is wanted])
-fi
-AM_CONDITIONAL([HAS_MODMINER], [test x$modminer = xyes])
-
 curses="auto"
 
 AC_ARG_WITH([curses],
@@ -344,54 +245,10 @@ else
 	])
 fi
 
-if test x$avalon$bitforce$bitfury$modminer$bflsc$icarus$hashfast$klondike != xnononononononono; then
-	want_usbutils=true
-else
-	want_usbutils=false
-fi
-
-AM_CONDITIONAL([NEED_FPGAUTILS], [test x$modminer != xno])
-AM_CONDITIONAL([WANT_USBUTILS], [test x$want_usbutils != xfalse])
 AM_CONDITIONAL([HAVE_CURSES], [test x$curses = xyes])
 AM_CONDITIONAL([HAVE_WINDOWS], [test x$have_win32 = xtrue])
 AM_CONDITIONAL([HAVE_x86_64], [test x$have_x86_64 = xtrue])
 
-if test "x$want_usbutils" != xfalse; then
-	dlibusb="no"
-	AC_DEFINE([USE_USBUTILS], [1], [Defined to 1 if usbutils support required])
-	AC_ARG_WITH([system-libusb],
-		[AC_HELP_STRING([--with-system-libusb],[Compile against dynamic system libusb (default use included static libusb)])],
-		[dlibusb=$withval]
-	)
-
-	if test "x$dlibusb" != xno; then
-		case $target in
-			*-*-freebsd*)
-				LIBUSB_LIBS="-lusb"
-				LIBUSB_CFLAGS=""
-				AC_DEFINE(HAVE_LIBUSB, 1, [Define if you have libusb-1.0])
-				;;
-			*)
-				PKG_CHECK_MODULES(LIBUSB, libusb-1.0, [AC_DEFINE(HAVE_LIBUSB, 1, [Define if you have libusb-1.0])], [AC_MSG_ERROR([Could not find usb library - please install libusb-1.0])])
-				;;
-		esac
-	else
-		AC_CONFIG_SUBDIRS([compat/libusb-1.0])
-		LIBUSB_LIBS="compat/libusb-1.0/libusb/.libs/libusb-1.0.a"
-		if test "x$have_linux" = "xtrue"; then
-			LIBUSB_LIBS+=" -ludev"
-		fi
-		if test "x$have_darwin" = "xtrue"; then
-			LIBUSB_LIBS+=" -lobjc"
-			LDFLAGS+=" -framework CoreFoundation -framework IOKit"
-		fi
-	fi
-else
-	LIBUSB_LIBS=""
-fi
-
-AM_CONDITIONAL([WANT_STATIC_LIBUSB], [test x$dlibusb = xno])
-
 AC_CONFIG_SUBDIRS([compat/jansson-2.5])
 JANSSON_LIBS="compat/jansson-2.5/src/.libs/libjansson.a"
 
@@ -407,9 +264,6 @@ if test "x$have_cgminer_sdk" = "xtrue"; then
 	PKG_CONFIG_PATH="$CGMINER_SDK/lib/pkgconfig${PKG_CONFIG_PATH:+:$PKG_CONFIG_PATH}"
 fi
 
-AC_SUBST(LIBUSB_LIBS)
-AC_SUBST(LIBUSB_CFLAGS)
-
 AC_ARG_ENABLE([libcurl],
 	[AC_HELP_STRING([--disable-libcurl],[Disable building with libcurl for getwork and GBT support])],
 	[libcurl=$enableval]
@@ -476,10 +330,6 @@ fi
 
 AC_DEFINE_UNQUOTED([CGMINER_PREFIX], ["$prefix/bin"], [Path to cgminer install])
 
-AC_DEFINE_UNQUOTED([PHATK_KERNNAME], ["phatk121016"], [Filename for phatk kernel])
-AC_DEFINE_UNQUOTED([POCLBM_KERNNAME], ["poclbm130302"], [Filename for poclbm kernel])
-AC_DEFINE_UNQUOTED([DIAKGCN_KERNNAME], ["diakgcn121016"], [Filename for diakgcn kernel])
-AC_DEFINE_UNQUOTED([DIABLO_KERNNAME], ["diablo130302"], [Filename for diablo kernel])
 AC_DEFINE_UNQUOTED([SCRYPT_KERNNAME], ["scrypt130511"], [Filename for scrypt kernel])
 
 
@@ -537,16 +387,12 @@ if test "x$opencl" != xno; then
 
 	else
 		echo "  OpenCL...............: NOT FOUND. GPU mining support DISABLED"
-		if test "x$avalon$bitforce$bitfury$icarus$modminer$bflsc$hashfast$klondike$knc" = xnonononononononono; then
-			AC_MSG_ERROR([No mining configured in])
-		fi
+		AC_MSG_ERROR([No mining configured in])
 		echo "  scrypt...............: Disabled (needs OpenCL)"
 	fi
 else
 	echo "  OpenCL...............: Detection overrided. GPU mining support DISABLED"
-	if test "x$avalon$bitforce$bitfury$icarus$modminer$bflsc$hashfast$klondike$knc" = xnonononononononono; then
-		AC_MSG_ERROR([No mining configured in])
-	fi
+	AC_MSG_ERROR([No mining configured in])
 	echo "  scrypt...............: Disabled (needs OpenCL)"
 fi
 
@@ -560,67 +406,12 @@ else
 	echo "  ADL..................: Detection overrided. GPU monitoring support DISABLED"
 fi
 
-echo
-if test "x$avalon" = xyes; then
-	echo "  Avalon.ASICs.........: Enabled"
-else
-	echo "  Avalon.ASICs.........: Disabled"
-fi
-
-if test "x$bflsc" = xyes; then
-	echo "  BFL.ASICs............: Enabled"
-else
-	echo "  BFL.ASICs............: Disabled"
-fi
-
-if test "x$knc" = xyes; then
-	echo "  KnC.ASICs............: Enabled"
-else
-	echo "  KnC.ASICs............: Disabled"
-fi
-
-if test "x$bitforce" = xyes; then
-	echo "  BitForce.FPGAs.......: Enabled"
-else
-	echo "  BitForce.FPGAs.......: Disabled"
-fi
-
-if test "x$bitfury" = xyes; then
-	echo "  BitFury.ASICs........: Enabled"
-else
-	echo "  BitFury.ASICs........: Disabled"
-fi
-
-if test "x$hashfast" = xyes; then
-	echo "  Hashfast.ASICs.......: Enabled"
-else
-	echo "  Hashfast.ASICs.......: Disabled"
-fi
-
-if test "x$icarus" = xyes; then
-	echo "  Icarus.ASICs/FPGAs...: Enabled"
-else
-	echo "  Icarus.ASICs/FPGAs...: Disabled"
-fi
-
-if test "x$klondike" = xyes; then
-	echo "  Klondike.ASICs.......: Enabled"
-else
-	echo "  Klondike.ASICs.......: Disabled"
-fi
-
-if test "x$modminer" = xyes; then
-	echo "  ModMiner.FPGAs.......: Enabled"
-else
-	echo "  ModMiner.FPGAs.......: Disabled"
-fi
-
 echo
 echo "Compilation............: make (or gmake)"
 echo "  CPPFLAGS.............: $CPPFLAGS"
 echo "  CFLAGS...............: $CFLAGS"
 echo "  LDFLAGS..............: $LDFLAGS $PTHREAD_FLAGS"
-echo "  LDADD................: $DLOPEN_FLAGS $LIBCURL_LIBS $JANSSON_LIBS $PTHREAD_LIBS $OPENCL_LIBS $NCURSES_LIBS $PDCURSES_LIBS $WS2_LIBS $MATH_LIBS $LIBUSB_LIBS $RT_LIBS"
+echo "  LDADD................: $DLOPEN_FLAGS $LIBCURL_LIBS $JANSSON_LIBS $PTHREAD_LIBS $OPENCL_LIBS $NCURSES_LIBS $PDCURSES_LIBS $WS2_LIBS $MATH_LIBS $RT_LIBS"
 echo
 echo "Installation...........: make install (as root if needed, with 'su' or 'sudo')"
 echo "  prefix...............: $prefix"
diff --git a/ocl.c b/ocl.c
index 977eee81..2a8771c3 100644
--- a/ocl.c
+++ b/ocl.c
@@ -437,18 +437,6 @@ _clState *initCl(unsigned int gpu, char *name, size_t nameSize)
 		preferred_vwidth = 2;
 
 	switch (clState->chosen_kernel) {
-		case KL_POCLBM:
-			strcpy(filename, POCLBM_KERNNAME".cl");
-			strcpy(binaryfilename, POCLBM_KERNNAME);
-			break;
-		case KL_PHATK:
-			strcpy(filename, PHATK_KERNNAME".cl");
-			strcpy(binaryfilename, PHATK_KERNNAME);
-			break;
-		case KL_DIAKGCN:
-			strcpy(filename, DIAKGCN_KERNNAME".cl");
-			strcpy(binaryfilename, DIAKGCN_KERNNAME);
-			break;
 		case KL_SCRYPT:
 			strcpy(filename, SCRYPT_KERNNAME".cl");
 			strcpy(binaryfilename, SCRYPT_KERNNAME);
@@ -456,9 +444,6 @@ _clState *initCl(unsigned int gpu, char *name, size_t nameSize)
 			cgpu->vwidth = 1;
 			break;
 		case KL_NONE: /* Shouldn't happen */
-		case KL_DIABLO:
-			strcpy(filename, DIABLO_KERNNAME".cl");
-			strcpy(binaryfilename, DIABLO_KERNNAME);
 			break;
 	}