librtlsdr: new package

librtlsdr is a library and software for using a Realtek RTL2832U based
DVB-T dongle as a cheap SDR.

[Thomas: change license to GPLv2+, reword help text for the detach
driver option.]

Signed-off-by: Jason Pruitt <jrspruitt@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/Config.in

@@ -649,6 +649,7 @@ menu "Hardware handling"
 	source "package/libnfc/Config.in"
 	source "package/libqmi/Config.in"
 	source "package/libraw1394/Config.in"
+	source "package/librtlsdr/Config.in"
 	source "package/libserial/Config.in"
 	source "package/libsoc/Config.in"
 	source "package/libusb/Config.in"

package/librtlsdr/Config.in

@@ -0,0 +1,24 @@
+config BR2_PACKAGE_LIBRTLSDR
+	bool "librtlsdr"
+	select BR2_PACKAGE_LIBUSB
+	depends on BR2_TOOLCHAIN_HAS_THREADS
+	help
+	  Library and command line programs for accessing
+	  RTL2832U SDR dongles.
+
+	  http://sdr.osmocom.org/trac/wiki/rtl-sdr/
+
+if BR2_PACKAGE_LIBRTLSDR
+
+config BR2_PACKAGE_LIBRTLSDR_DETACH_DRIVER
+	bool "Detach kernel driver"
+	default y
+	help
+	  Enable this option if you would like librtlsdr to
+	  automatically detach any kernel driver associated to the
+	  RTL2832U USB device on startup if one is loaded.
+
+endif
+
+comment "librtlsdr needs a toolchain w/ threads"
+	depends on !BR2_TOOLCHAIN_HAS_THREADS

package/librtlsdr/librtlsdr.mk

@@ -0,0 +1,22 @@
+##########################################################################
+#
+# librtlsdr
+#
+##########################################################################
+
+LIBRTLSDR_VERSION = v0.5.3
+LIBRTLSDR_SITE = $(call github,steve-m,librtlsdr,$(LIBRTLSDR_VERSION))
+LIBRTLSDR_LICENSE = GPLv2+
+LIBRTLSDR_LICENSE_FILES = COPYING
+LIBRTLSDR_INSTALL_STAGING = YES
+LIBRTLSDR_DEPENDENCIES = libusb
+
+ifeq ($(BR2_PACKAGE_HAS_UDEV),y)
+LIBRTLSDR_CONF_OPT += -DINSTALL_UDEV_RULES=ON
+endif
+
+ifeq ($(BR2_PACKAGE_LIBRTLSDR_DETACH_DRIVER),y)
+LIBRTLSDR_CONF_OPT += -DDETACH_KERNEL_DRIVER=1
+endif
+
+$(eval $(cmake-package))