contrib: add a udev rule to invoke am7xxx-modeswitch

This will be useful on embedded systems like RaspberryPi or BeagleBone
where users may not want the whole usb-modeswitch package to be
installed just for libam7xxx.

diff --git a/contrib/50-am7xxx_mode_switch.rules b/contrib/50-am7xxx_mode_switch.rules
new file mode 100644 (file)
index 0000000..4210346
--- /dev/null
+++ b/contrib/50-am7xxx_mode_switch.rules
@@ -0,0 +1,3 @@
+# Rule to call am7xxx_mode_switch, useful when usb-modeswitch is not available.
+# Actions Microelectronics Co. Generic Display Device (Mass storage mode)
+ACTION=="add", SUBSYSTEM=="usb", ATTRS{idVendor}=="1de1", ATTRS{idProduct}=="1101", MODE="0660", GROUP="plugdev", RUN+="am7xxx-modeswitch"