From a99e813bbf0cfaa454feda47d11debb98ce6de39 Mon Sep 17 00:00:00 2001
From: Matthew Garrett <mjg@redhat.com>
Date: Thu, 1 Oct 2009 15:08:41 +0100
Subject: [PATCH] Add udev rules to set devices to autosuspend

Most fingerprint readers can be suspended safely, so use
the udev rules to autosuspend them when they appear.

The script itself contains whitelists and blacklists.
---
 libfprint/Makefile.am              | 13 +++++-
 libfprint/fprint-list-udev-rules.c | 73 ++++++++++++++++++++++++++++++
 2 files changed, 84 insertions(+), 2 deletions(-)
 create mode 100644 libfprint/fprint-list-udev-rules.c

diff --git a/libfprint/Makefile.am b/libfprint/Makefile.am
index ebe13f8..c79012b 100644
--- a/libfprint/Makefile.am
+++ b/libfprint/Makefile.am
@@ -1,6 +1,6 @@
 lib_LTLIBRARIES = libfprint.la
-noinst_PROGRAMS = fprint-list-hal-info
-MOSTLYCLEANFILES = $(hal_fdi_DATA)
+noinst_PROGRAMS = fprint-list-hal-info fprint-list-udev-rules
+MOSTLYCLEANFILES = $(hal_fdi_DATA) $(udev_rules_DATA)
 
 UPEKTS_SRC = drivers/upekts.c
 UPEKTC_SRC = drivers/upektc.c
@@ -66,6 +66,15 @@ hal_fdidir = $(datadir)/hal/fdi/information/20thirdparty/
 $(hal_fdi_DATA): fprint-list-hal-info
 	$(builddir)/fprint-list-hal-info > $@
 
+fprint_list_udev_rules_SOURCES = fprint-list-udev-rules.c
+fprint_list_udev_rules_CFLAGS = -fvisibility=hidden -I$(srcdir)/nbis/include $(LIBUSB_CFLAGS) $(GLIB_CFLAGS) $(IMAGEMAGICK_CFLAGS) $(CRYPTO_CFLAGS) $(AM_CFLAGS)
+fprint_list_udev_rules_LDADD = $(builddir)/libfprint.la
+
+udev_rules_DATA = 60-fprint-autosuspend.rules
+udev_rulesdir = $(sysconfdir)/udev/rules.d/
+
+$(udev_rules_DATA): fprint-list-udev-rules
+	$(builddir)/fprint-list-udev-rules > $@
 
 if ENABLE_UPEKTS
 DRIVER_SRC += $(UPEKTS_SRC)
diff --git a/libfprint/fprint-list-udev-rules.c b/libfprint/fprint-list-udev-rules.c
new file mode 100644
index 0000000..76a1471
--- /dev/null
+++ b/libfprint/fprint-list-udev-rules.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2009 Red Hat <mjg@redhat.com> 
+ * Copyright (C) 2008 Bastien Nocera <hadess@hadess.net>
+ * Copyright (C) 2008 Timo Hoenig <thoenig@suse.de>, <thoenig@nouse.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <config.h>
+#include <stdio.h>
+
+#include "fp_internal.h"
+
+static const struct usb_id whitelist_id_table[] = {
+    { .vendor = 0x08ff, .product = 0x2810 },
+    { 0, 0, 0, },
+};
+
+static const struct usb_id blacklist_id_table[] = {
+    { .vendor = 0x0483, .product = 0x2016 },
+    { 0, 0, 0 },
+};
+
+struct fp_driver whitelist = {
+    .id_table = whitelist_id_table,
+};
+
+static void print_driver (struct fp_driver *driver)
+{
+    int i, j, blacklist;
+
+    for (i = 0; driver->id_table[i].vendor != 0; i++) {
+	blacklist = 0;
+	for (j = 0; blacklist_id_table[j].vendor != 0; j++) {
+	    if (driver->id_table[i].vendor == blacklist_id_table[j].vendor &&
+		driver->id_table[j].product == blacklist_id_table[j].product) {
+		blacklist = 1;
+	    }
+	}
+	if (blacklist)
+	    continue;
+
+	printf ("SUBSYSTEM==\"usb\", ATTRS{idVendor}==\"%04x\", ATTRS{idProduct}==\"%04x\", ATTRS{dev}==\"*\", ATTR{power/level}=\"auto\"\n", driver->id_table[i].vendor, driver->id_table[i].product);
+    }
+}
+
+int main (int argc, char **argv)
+{
+    struct fp_driver **list;
+    guint i;
+
+    list = fprint_get_drivers ();
+
+    for (i = 0; list[i] != NULL; i++) {
+	print_driver (list[i]);
+    }
+
+    print_driver (&whitelist);
+
+    return 0;
+}