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pmaports/temp/upower/0001-Add-torch-support.patch
Oliver Smith 80fec94eb8
temp/upower: fork from alpine to apply torch patch (MR 1623) 
Required to make the torch button work in Phosh.

[ci:skip-build]: already built successfully in CI
2020-10-23 08:20:11 +02:00

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From 1cfb72f33ade965ca769721b9e248ca916482cef Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Guido=20G=C3=BCnther?= <agx@sigxcpu.org>
Date: Sat, 26 Sep 2020 12:19:50 +0200
Subject: [PATCH] Add torch support
This is modeled like KbdBacklight.
Taken from: https://gitlab.freedesktop.org/upower/upower/-/merge_requests/50
---
dbus/Makefile.am | 11 +
dbus/org.freedesktop.UPower.Torch.xml | 148 ++++++++++
doc/Makefile.am | 9 +-
src/Makefile.am | 4 +-
src/org.freedesktop.UPower.conf.in | 4 +
src/up-main.c | 5 +
src/up-torch.c | 388 ++++++++++++++++++++++++++
src/up-torch.h | 40 +++
8 files changed, 607 insertions(+), 2 deletions(-)
create mode 100644 dbus/org.freedesktop.UPower.Torch.xml
create mode 100644 src/up-torch.c
create mode 100644 src/up-torch.h
diff --git a/dbus/Makefile.am b/dbus/Makefile.am
index 017c7eb..264761c 100644
--- a/dbus/Makefile.am
+++ b/dbus/Makefile.am
@@ -17,6 +17,8 @@ BUILT_SOURCES = \
up-device-generated.c \
up-kbd-backlight-generated.h \
up-kbd-backlight-generated.c \
+ up-torch-generated.h \
+ up-torch-generated.c \
up-wakeups-generated.h \
up-wakeups-generated.c
@@ -46,6 +48,14 @@ up-kbd-backlight-generated.h: org.freedesktop.UPower.KbdBacklight.xml Makefile.a
$(srcdir)/org.freedesktop.UPower.KbdBacklight.xml
up-kbd-backlight-generated.c: up-kbd-backlight-generated.h
+up-torch-generated.h: org.freedesktop.UPower.Torch.xml Makefile.am
+ $(AM_V_GEN) gdbus-codegen --interface-prefix org.freedesktop.UPower.Torch. \
+ --generate-c-code up-torch-generated \
+ --c-namespace Up \
+ --annotate "org.freedesktop.UPower.Torch" "org.gtk.GDBus.C.Name" ExportedTorch \
+ $(srcdir)/org.freedesktop.UPower.Torch.xml
+up-torch-generated.c: up-torch-generated.h
+
up-wakeups-generated.h: org.freedesktop.UPower.Wakeups.xml Makefile.am
$(AM_V_GEN) gdbus-codegen --interface-prefix org.freedesktop.UPower.Wakeups. \
--generate-c-code up-wakeups-generated \
@@ -59,6 +69,7 @@ dist_dbusif_DATA = \
org.freedesktop.UPower.xml \
org.freedesktop.UPower.Device.xml \
org.freedesktop.UPower.KbdBacklight.xml \
+ org.freedesktop.UPower.Torch.xml \
org.freedesktop.UPower.Wakeups.xml
-include $(top_srcdir)/git.mk
diff --git a/dbus/org.freedesktop.UPower.Torch.xml b/dbus/org.freedesktop.UPower.Torch.xml
new file mode 100644
index 0000000..4f7bfd9
--- /dev/null
+++ b/dbus/org.freedesktop.UPower.Torch.xml
@@ -0,0 +1,148 @@
+<!DOCTYPE node PUBLIC
+"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN"
+"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd" [
+ <!ENTITY ERROR_GENERAL "org.freedesktop.UPower.GeneralError">
+]>
+<node name="/" xmlns:doc="http://www.freedesktop.org/dbus/1.0/doc.dtd">
+ <interface name="org.freedesktop.UPower.Torch">
+ <doc:doc>
+ <doc:description>
+ <doc:para>
+ org.freedesktop.UPower.Torch is a DBus interface implemented
+ by UPower.
+ It allows a torch (if present) to be controlled.
+ </doc:para>
+ </doc:description>
+ </doc:doc>
+
+ <!-- ************************************************************ -->
+ <method name="GetMaxBrightness">
+ <arg name="value" direction="out" type="i">
+ <doc:doc>
+ <doc:summary>
+ The maximum value of the torch brightness.
+ </doc:summary>
+ </doc:doc>
+ </arg>
+ <doc:doc>
+ <doc:description>
+ <doc:para>
+ Get the maximum brightness level for the torch.
+ </doc:para>
+ </doc:description>
+ <doc:errors>
+ <doc:error name="&ERROR_GENERAL;">if an error occured while getting the maximum brightness</doc:error>
+ </doc:errors>
+ </doc:doc>
+ </method>
+
+ <!-- ************************************************************ -->
+ <method name="GetBrightness">
+ <arg name="value" direction="out" type="i">
+ <doc:doc>
+ <doc:summary>
+ The current value of the torch brightness.
+ </doc:summary>
+ </doc:doc>
+ </arg>
+ <doc:doc>
+ <doc:description>
+ <doc:para>
+ Get the brightness level of the torch.
+ </doc:para>
+ </doc:description>
+ <doc:errors>
+ <doc:error name="&ERROR_GENERAL;">if an error occured while getting the brightness</doc:error>
+ </doc:errors>
+ </doc:doc>
+ </method>
+
+ <!-- ************************************************************ -->
+ <method name="SetBrightness">
+ <arg name="value" direction="in" type="i">
+ <doc:doc>
+ <doc:summary>
+ The value to set the torch brightness.
+ </doc:summary>
+ </doc:doc>
+ </arg>
+ <doc:doc>
+ <doc:description>
+ <doc:para>
+ Set the brightness level of the torch.
+ </doc:para>
+ </doc:description>
+ <doc:errors>
+ <doc:error name="&ERROR_GENERAL;">if an error occured while setting the brightness</doc:error>
+ </doc:errors>
+ </doc:doc>
+ </method>
+
+ <!-- ************************************************************ -->
+ <signal name="BrightnessChanged">
+ <arg name="value" direction="out" type="i">
+ <doc:doc>
+ <doc:summary>
+ The new brightness value of the torch.
+ </doc:summary>
+ </doc:doc>
+ </arg>
+ <doc:doc>
+ <doc:description>
+ <doc:para>
+ The torch brightness level has changed.
+ </doc:para>
+ </doc:description>
+ </doc:doc>
+ </signal>
+
+ <signal name="BrightnessChangedWithSource">
+ <arg name="value" direction="out" type="i">
+ <doc:doc>
+ <doc:summary>
+ The new brightness value of the torch.
+ </doc:summary>
+ </doc:doc>
+ </arg>
+ <arg name="source" direction="out" type="s">
+ <doc:doc>
+ <doc:summary>
+ Source of the torch brightness change, either
+ "external" if SetBrightness was called, or "internal" if the
+ hardware changed the keyboard brightness itself.
+ </doc:summary>
+ </doc:doc>
+ </arg>
+ <doc:doc>
+ <doc:description>
+ <doc:para>
+ The torch brightness level has changed including
+ information about the source of the change.
+ </doc:para>
+ </doc:description>
+ </doc:doc>
+ </signal>
+ <!-- ************************************************************ -->
+ <property name="MaxBrightness" type="i" access="read">
+ <doc:doc>
+ <doc:description>
+ <doc:para>
+ The maximum value of the torch brightness.
+ </doc:para>
+ </doc:description>
+ </doc:doc>
+ </property>
+
+ <property name="Brightness" type="i" access="read">
+ <doc:doc>
+ <doc:description>
+ <doc:para>
+ The current value of the torch brightness.
+ </doc:para>
+ </doc:description>
+ </doc:doc>
+ </property>
+
+ </interface>
+
+</node>
diff --git a/doc/Makefile.am b/doc/Makefile.am
index 2c20415..718c057 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -65,6 +65,11 @@ org.freedesktop.UPower.KbdBacklight.ref.xml : $(top_srcdir)/dbus/org.freedesktop
echo "<?xml version=\"1.0\"?>""<!DOCTYPE refentry PUBLIC \"-//OASIS//DTD DocBook XML V4.1.2//EN\" \"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd\">" > $@
$(XSLTPROC) $(top_srcdir)/doc/spec-to-docbook.xsl $< | tail -n +2 >> $@
+org.freedesktop.UPower.Torch.ref.xml : $(top_srcdir)/dbus/org.freedesktop.UPower.Torch.xml $(top_srcdir)/doc/spec-to-docbook.xsl
+ if $(AM_V_P); then set -x; else echo " GEN $@"; fi
+ echo "<?xml version=\"1.0\"?>""<!DOCTYPE refentry PUBLIC \"-//OASIS//DTD DocBook XML V4.1.2//EN\" \"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd\">" > $@
+ $(XSLTPROC) $(top_srcdir)/doc/spec-to-docbook.xsl $< | tail -n +2 >> $@
+
org.freedesktop.UPower.Wakeups.ref.xml : $(top_srcdir)/dbus/org.freedesktop.UPower.Wakeups.xml $(top_srcdir)/doc/spec-to-docbook.xsl
if $(AM_V_P); then set -x; else echo " GEN $@"; fi
echo "<?xml version=\"1.0\"?>""<!DOCTYPE refentry PUBLIC \"-//OASIS//DTD DocBook XML V4.1.2//EN\" \"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd\">" > $@
@@ -75,7 +80,8 @@ EXTRA_DIST = spec-to-docbook.xsl dbus-introspect-docs.dtd
BUILT_SOURCES = \
org.freedesktop.UPower.ref.xml \
org.freedesktop.UPower.Device.ref.xml \
- org.freedesktop.UPower.KbdBacklight.ref.xml
+ org.freedesktop.UPower.KbdBacklight.ref.xml \
+ org.freedesktop.UPower.Torch.ref.xml
# Non-autogenerated SGML files to be included in $(DOC_MAIN_SGML_FILE)
content_files = \
@@ -102,6 +108,7 @@ MAINTAINERCLEANFILES = \
DISTCLEANFILES = \
org.freedesktop.UPower.Device.ref.xml \
org.freedesktop.UPower.KbdBacklight.ref.xml \
+ org.freedesktop.UPower.Torch.ref.xml \
org.freedesktop.UPower.ref.xml \
upowerd.xml \
upower.xml \
diff --git a/src/Makefile.am b/src/Makefile.am
index 3400139..f022efb 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -60,7 +60,9 @@ upowerd_SOURCES = \
up-backend.h \
up-native.h \
up-main.c \
- up-backend-bsd-private.h \
+ up-torch.h \
+ up-torch.c \
+ up-backend-bsd-private.h \
$(BUILT_SOURCES)
upowerd_CPPFLAGS = \
diff --git a/src/org.freedesktop.UPower.conf.in b/src/org.freedesktop.UPower.conf.in
index 5a6c660..ef60549 100644
--- a/src/org.freedesktop.UPower.conf.in
+++ b/src/org.freedesktop.UPower.conf.in
@@ -21,6 +21,8 @@
send_interface="org.freedesktop.DBus.Properties"/>
<allow send_destination="org.freedesktop.UPower.KbdBacklight"
send_interface="org.freedesktop.DBus.Properties"/>
+ <allow send_destination="org.freedesktop.UPower.Torch"
+ send_interface="org.freedesktop.DBus.Properties"/>
<allow send_destination="org.freedesktop.UPower.Wakeups"
send_interface="org.freedesktop.DBus.Properties"/>
@@ -28,6 +30,8 @@
send_interface="org.freedesktop.UPower"/>
<allow send_destination="org.freedesktop.UPower"
send_interface="org.freedesktop.UPower.Device"/>
+ <allow send_destination="org.freedesktop.UPower"
+ send_interface="org.freedesktop.UPower.Torch"/>
<allow send_destination="org.freedesktop.UPower"
send_interface="org.freedesktop.UPower.KbdBacklight"/>
<allow send_destination="org.freedesktop.UPower"
diff --git a/src/up-main.c b/src/up-main.c
index 0619c50..f9ebaae 100644
--- a/src/up-main.c
+++ b/src/up-main.c
@@ -38,12 +38,14 @@
#include "up-daemon.h"
#include "up-kbd-backlight.h"
+#include "up-torch.h"
#include "up-wakeups.h"
#define DEVKIT_POWER_SERVICE_NAME "org.freedesktop.UPower"
typedef struct UpState {
UpKbdBacklight *kbd_backlight;
+ UpTorch *torch;
UpWakeups *wakeups;
UpDaemon *daemon;
GMainLoop *loop;
@@ -55,6 +57,7 @@ up_state_free (UpState *state)
up_daemon_shutdown (state->daemon);
g_clear_object (&state->kbd_backlight);
+ g_clear_object (&state->torch);
g_clear_object (&state->wakeups);
g_clear_object (&state->daemon);
g_clear_pointer (&state->loop, g_main_loop_unref);
@@ -68,6 +71,7 @@ up_state_new (void)
UpState *state = g_new0 (UpState, 1);
state->kbd_backlight = up_kbd_backlight_new ();
+ state->torch = up_torch_new ();
state->wakeups = up_wakeups_new ();
state->daemon = up_daemon_new ();
state->loop = g_main_loop_new (NULL, FALSE);
@@ -86,6 +90,7 @@ up_main_bus_acquired (GDBusConnection *connection,
UpState *state = user_data;
up_kbd_backlight_register (state->kbd_backlight, connection);
+ up_torch_register (state->torch, connection);
up_wakeups_register (state->wakeups, connection);
if (!up_daemon_startup (state->daemon, connection)) {
g_warning ("Could not startup; bailing out");
diff --git a/src/up-torch.c b/src/up-torch.c
new file mode 100644
index 0000000..8705041
--- /dev/null
+++ b/src/up-torch.c
@@ -0,0 +1,388 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2020 Guido Günther <agx@sigxcpu.org>
+ * 2008 Richard Hughes <richard@hughsie.com>
+ * 2010 Alex Murray <murray.alex@gmail.com>
+ *
+ * Licensed under the GNU General Public License Version 2
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+
+#include <glib.h>
+#include <glib/gi18n.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <dirent.h>
+#include <errno.h>
+
+#include "up-torch.h"
+#include "up-daemon.h"
+#include "up-types.h"
+
+static void up_torch_finalize (GObject *object);
+
+struct _UpTorch
+{
+ UpExportedTorchSkeleton parent;
+
+ gint fd;
+ gint fd_hw_changed;
+ GIOChannel *channel_hw_changed;
+ gint max_brightness;
+};
+
+G_DEFINE_TYPE (UpTorch, up_torch, UP_TYPE_EXPORTED_TORCH_SKELETON)
+
+/**
+ * up_torch_emit_change:
+ **/
+static void
+up_torch_emit_change(UpTorch *torch, int value, const char *source)
+{
+ g_object_set (torch, "brightness", value, NULL);
+ up_exported_torch_emit_brightness_changed (UP_EXPORTED_TORCH (torch), value);
+ up_exported_torch_emit_brightness_changed_with_source (UP_EXPORTED_TORCH (torch), value, source);
+}
+
+/**
+ * up_torch_brightness_read:
+ **/
+static gint
+up_torch_brightness_read (UpTorch *torch, int fd)
+{
+ gchar buf[16];
+ gchar *end = NULL;
+ ssize_t len;
+ gint64 brightness = -1;
+
+ g_return_val_if_fail (fd >= 0, brightness);
+
+ lseek (fd, 0, SEEK_SET);
+ len = read (fd, buf, G_N_ELEMENTS (buf) - 1);
+
+ if (len > 0) {
+ buf[len] = '\0';
+ brightness = g_ascii_strtoll (buf, &end, 10);
+
+ if (brightness < 0 ||
+ brightness > torch->max_brightness ||
+ end == buf) {
+ brightness = -1;
+ g_warning ("failed to convert brightness: %s", buf);
+ }
+ }
+
+ g_object_set (torch, "brightness", brightness, NULL);
+ return brightness;
+}
+
+/**
+ * up_torch_brightness_write:
+ **/
+static gboolean
+up_torch_brightness_write (UpTorch *torch, gint value)
+{
+ g_autofree gchar *text = NULL;
+ gint retval;
+ gint length;
+ gboolean ret = TRUE;
+
+ /* write new values to backlight */
+ if (torch->fd < 0) {
+ g_warning ("cannot write to torch as file not open");
+ return FALSE;
+ }
+
+ /* limit to between 0 and max */
+ value = CLAMP (value, 0, torch->max_brightness);
+
+ /* convert to text */
+ text = g_strdup_printf ("%i", value);
+ length = strlen (text);
+
+ /* write to file */
+ lseek (torch->fd, 0, SEEK_SET);
+ retval = write (torch->fd, text, length);
+ if (retval != length) {
+ g_warning ("writing '%s' to device failed", text);
+ return FALSE;
+ }
+
+ /* emit signal */
+ up_torch_emit_change (torch, value, "external");
+
+ return ret;
+}
+
+/**
+ * up_torch_get_brightness:
+ *
+ * Gets the current brightness
+ **/
+static gboolean
+up_torch_get_brightness (UpExportedTorch *skeleton,
+ GDBusMethodInvocation *invocation,
+ UpTorch *torch)
+{
+ gint brightness;
+
+ brightness = up_torch_brightness_read (torch, torch->fd);
+
+ if (brightness >= 0) {
+ up_exported_torch_complete_get_brightness (skeleton, invocation,
+ brightness);
+ } else {
+ g_dbus_method_invocation_return_error (invocation,
+ UP_DAEMON_ERROR, UP_DAEMON_ERROR_GENERAL,
+ "error reading brightness");
+ }
+
+ return TRUE;
+}
+
+/**
+ * up_torch_get_max_brightness:
+ *
+ * Gets the max brightness
+ **/
+static gboolean
+up_torch_get_max_brightness (UpExportedTorch *skeleton,
+ GDBusMethodInvocation *invocation,
+ UpTorch *torch)
+{
+ up_exported_torch_complete_get_max_brightness (skeleton, invocation,
+ torch->max_brightness);
+ return TRUE;
+}
+
+/**
+ * up_torch_set_brightness:
+ **/
+static gboolean
+up_torch_set_brightness (UpExportedTorch *skeleton,
+ GDBusMethodInvocation *invocation,
+ gint value,
+ UpTorch *torch)
+{
+ gboolean ret = FALSE;
+
+ g_debug ("setting brightness to %i", value);
+ ret = up_torch_brightness_write (torch, value);
+
+ if (ret) {
+ up_exported_torch_complete_set_brightness (skeleton, invocation);
+ } else {
+ g_dbus_method_invocation_return_error (invocation,
+ UP_DAEMON_ERROR, UP_DAEMON_ERROR_GENERAL,
+ "error writing brightness %d", value);
+ }
+
+ return TRUE;
+}
+
+/**
+ * up_torch_class_init:
+ **/
+static void
+up_torch_class_init (UpTorchClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ object_class->finalize = up_torch_finalize;
+}
+
+/**
+ * up_torch_event_io:
+ **/
+static gboolean
+up_torch_event_io (GIOChannel *channel, GIOCondition condition, gpointer data)
+{
+ UpTorch *torch = (UpTorch*) data;
+ gint brightness;
+
+ if (!(condition & G_IO_PRI))
+ return FALSE;
+
+ brightness = up_torch_brightness_read (torch, torch->fd_hw_changed);
+ if (brightness < 0 && errno == ENODEV)
+ return FALSE;
+
+ if (brightness >= 0)
+ up_torch_emit_change (torch, brightness, "internal");
+
+ return TRUE;
+}
+
+/**
+ * up_torch_find:
+ **/
+static gboolean
+up_torch_find (UpTorch *torch)
+{
+ gboolean ret;
+ gboolean found = FALSE;
+ GDir *dir;
+ const gchar *filename;
+ gchar *end = NULL;
+ g_autofree gchar *dir_path = NULL;
+ g_autofree gchar *path_max = NULL;
+ g_autofree gchar *path_now = NULL;
+ g_autofree gchar *path_hw_changed = NULL;
+ g_autofree gchar *buf_max = NULL;
+ g_autofree gchar *buf_now = NULL;
+ GError *error = NULL;
+
+ torch->fd = -1;
+
+ /* open directory */
+ dir = g_dir_open ("/sys/class/leds", 0, &error);
+ if (dir == NULL) {
+ if (!g_error_matches (error, G_FILE_ERROR, G_FILE_ERROR_NOENT))
+ g_warning ("failed to open directory: %s", error->message);
+ g_error_free (error);
+ goto out;
+ }
+
+ /* find a led device that is a torch */
+ while ((filename = g_dir_read_name (dir)) != NULL) {
+ if (g_strstr_len (filename, -1, "torch") != NULL ||
+ g_strstr_len (filename, -1, "flash") != NULL) {
+ dir_path = g_build_filename ("/sys/class/leds",
+ filename, NULL);
+ break;
+ }
+ }
+
+ /* nothing found */
+ if (dir_path == NULL)
+ goto out;
+
+ /* read max brightness */
+ path_max = g_build_filename (dir_path, "max_brightness", NULL);
+ ret = g_file_get_contents (path_max, &buf_max, NULL, &error);
+ if (!ret) {
+ g_warning ("failed to get max brightness: %s", error->message);
+ g_error_free (error);
+ goto out;
+ }
+ torch->max_brightness = g_ascii_strtoull (buf_max, &end, 10);
+ if (torch->max_brightness == 0 && end == buf_max) {
+ g_warning ("failed to convert max brightness: %s", buf_max);
+ goto out;
+ }
+ g_object_set (torch, "max-brightness", torch->max_brightness, NULL);
+
+ /* open the brightness file for read and write operations */
+ path_now = g_build_filename (dir_path, "brightness", NULL);
+ torch->fd = open (path_now, O_RDWR);
+
+ /* read brightness and check if it has an acceptable value */
+ if (up_torch_brightness_read (torch, torch->fd) < 0)
+ goto out;
+
+ path_hw_changed = g_build_filename (dir_path, "brightness_hw_changed", NULL);
+ torch->fd_hw_changed = open (path_hw_changed, O_RDONLY);
+ if (torch->fd_hw_changed >= 0) {
+ torch->channel_hw_changed = g_io_channel_unix_new (torch->fd_hw_changed);
+ g_io_add_watch (torch->channel_hw_changed,
+ G_IO_PRI, up_torch_event_io, torch);
+ }
+
+ /* success */
+ found = TRUE;
+out:
+ if (dir != NULL)
+ g_dir_close (dir);
+ return found;
+}
+
+/**
+ * up_torch_init:
+ **/
+static void
+up_torch_init (UpTorch *torch)
+{
+ g_signal_connect (torch, "handle-get-brightness",
+ G_CALLBACK (up_torch_get_brightness), torch);
+ g_signal_connect (torch, "handle-get-max-brightness",
+ G_CALLBACK (up_torch_get_max_brightness), torch);
+ g_signal_connect (torch, "handle-set-brightness",
+ G_CALLBACK (up_torch_set_brightness), torch);
+}
+
+/**
+ * up_torch_finalize:
+ **/
+static void
+up_torch_finalize (GObject *object)
+{
+ UpTorch *torch;
+
+ g_return_if_fail (object != NULL);
+ g_return_if_fail (UP_IS_TORCH (object));
+
+ torch = UP_TORCH (object);
+
+ if (torch->channel_hw_changed) {
+ g_io_channel_shutdown (torch->channel_hw_changed, FALSE, NULL);
+ g_io_channel_unref (torch->channel_hw_changed);
+ }
+
+ if (torch->fd_hw_changed >= 0)
+ close (torch->fd_hw_changed);
+
+ /* close file */
+ if (torch->fd >= 0)
+ close (torch->fd);
+
+ G_OBJECT_CLASS (up_torch_parent_class)->finalize (object);
+}
+
+/**
+ * up_torch_new:
+ **/
+UpTorch *
+up_torch_new (void)
+{
+ return g_object_new (UP_TYPE_TORCH, NULL);
+}
+
+void
+up_torch_register (UpTorch *torch,
+ GDBusConnection *connection)
+{
+ g_autoptr(GError) error = NULL;
+
+ /* find a kbd backlight in sysfs */
+ if (!up_torch_find (torch)) {
+ g_debug ("cannot find a torch");
+ return;
+ }
+
+ g_dbus_interface_skeleton_export (G_DBUS_INTERFACE_SKELETON (torch),
+ connection,
+ "/org/freedesktop/UPower/Torch",
+ &error);
+
+ if (error != NULL) {
+ g_warning ("Cannot export Torch object to bus: %s", error->message);
+ }
+}
diff --git a/src/up-torch.h b/src/up-torch.h
new file mode 100644
index 0000000..e84c9f5
--- /dev/null
+++ b/src/up-torch.h
@@ -0,0 +1,40 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Richard Hughes <richard@hughsie.com>
+ * 2010 Alex Murray <murray.alex@gmail.com>
+ * 2010 Alex Murray <murray.alex@gmail.com>
+ *
+ * Licensed under the GNU General Public License Version 2
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef __UP_TORCH_H
+#define __UP_TORCH_H
+
+#include <dbus/up-torch-generated.h>
+
+G_BEGIN_DECLS
+
+#define UP_TYPE_TORCH (up_torch_get_type ())
+G_DECLARE_FINAL_TYPE (UpTorch, up_torch, UP, TORCH, UpExportedTorchSkeleton);
+
+UpTorch *up_torch_new (void);
+void up_torch_register (UpTorch *torch,
+ GDBusConnection *connection);
+
+G_END_DECLS
+
+#endif /* __UP_TORCH_H */
--
2.20.1
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