to answer question why can't it be in Linux kernel. Them damn tuners!

Development tree is also kept aside from v4l.

 grep "GPL\|Copyright\|Rights" rtl2832u_v2.0.1/*
rtl2832u_v2.0.1/rtl2832u.c:MODULE_LICENSE("GPL");
rtl2832u_v2.0.1/tuner_e4000.c://  Copyright (c)  Elonics Ltd
rtl2832u_v2.0.1/tuner_e4000.c://  Copyright (c)  Elonics Ltd
rtl2832u_v2.0.1/tuner_fc0012.c://       Copyright 2008, All rights reversed.
rtl2832u_v2.0.1/tuner_max3543.c:| Copyright (C) 2009 Maxim Integrated Products.
rtl2832u_v2.0.1/tuner_max3543.h:| Copyright (C) 2009 Maxim Integrated Products
rtl2832u_v2.0.1/tuner_mt2063.c:**  Copyright 2007-2008 Microtune, Inc. All Rights Reserved
rtl2832u_v2.0.1/tuner_mt2063.c:**  Copyright 2006-2008 Microtune, Inc. All Rights Reserved
rtl2832u_v2.0.1/tuner_mt2063.h:**  Copyright 2004-2007 Microtune, Inc. All Rights Reserved
rtl2832u_v2.0.1/tuner_mt2063.h:**  Copyright 2006-2008 Microtune, Inc. All Rights Reserved
rtl2832u_v2.0.1/tuner_mt2063.h:**  Copyright 2007 Microtune, Inc. All Rights Reserved
rtl2832u_v2.0.1/tuner_mt2063.h:**  Copyright 2006-2008 Microtune, Inc. All Rights Reserved
rtl2832u_v2.0.1/tuner_mt2266.c:**  Copyright 2007 Microtune, Inc. All Rights Reserved
rtl2832u_v2.0.1/tuner_mt2266.h:**  Copyright 2007 Microtune, Inc. All Rights Reserved
rtl2832u_v2.0.1/tuner_mxl5007t.c: Copyright, Maxlinear, Inc.
rtl2832u_v2.0.1/tuner_mxl5007t.c: All Rights Reserved
rtl2832u_v2.0.1/tuner_mxl5007t.c: Copyright, Maxlinear, Inc.
rtl2832u_v2.0.1/tuner_mxl5007t.c: All Rights Reserved
rtl2832u_v2.0.1/tuner_mxl5007t.c: Copyright, Maxlinear, Inc.
rtl2832u_v2.0.1/tuner_mxl5007t.c: All Rights Reserved
rtl2832u_v2.0.1/tuner_mxl5007t.h: *                Copyright (c) 2006, MaxLinear, Inc.
rtl2832u_v2.0.1/tuner_mxl5007t.h: Copyright, Maxlinear, Inc.
rtl2832u_v2.0.1/tuner_mxl5007t.h: All Rights Reserved
rtl2832u_v2.0.1/tuner_mxl5007t.h: Copyright, Maxlinear, Inc.
rtl2832u_v2.0.1/tuner_mxl5007t.h: All Rights Reserved
rtl2832u_v2.0.1/tuner_tua9001.c:** Copyright (C) 1997-2007 Infineon AG All rights reserved.
rtl2832u_v2.0.1/tuner_tua9001.h:** Copyright (C) 1997-2007 Infineon AG All rights reserved.