Initial version

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

15 files changed, 513 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..5f1bda1
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+.bzr
+.bzrignore
+bin
+obj
diff --git a/GIT b/GIT
new file mode 100644
index 0000000..c55d54a
--- /dev/null
+++ b/GIT
@@ -0,0 +1 @@
+git-clone http://bitmath.org/git/hal-applesmc.git
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..2b7bb21
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,37 @@
+ADDONS  = hald-addon-generic-backlight
+FDIS    = 10-nvidia-bl.fdi
+
+TFDI    = $(addprefix fdi/,$(FDIS))
+TBIN    = $(addprefix bin/,$(ADDONS))
+TOBJ    = $(addprefix obj/,$(addsuffix .o,$(ADDONS)))
+
+LIBS    = -lhal -ldbus-glib-1
+
+DFDI    = usr/share/hal/fdi/policy/10osvendor
+DBIN    = usr/lib/hal
+
+.PHONY: all clean
+.PRECIOUS: obj/%.o
+
+all:    $(TBIN) $(TOBJ)
+
+bin/%:  obj/%.o
+        @mkdir -p $(@D)
+        gcc $< $(LIBS) -o $@
+
+obj/%.o: %.c
+        @mkdir -p $(@D)
+        gcc -c $< -o $@
+
+clean:
+        rm -rf bin obj
+
+distclean: clean
+        rm -rf *-stamp debian/hal-nvidia-bl* debian/*.log debian/files
+
+install: $(TBIN) $(TFDI)
+        install -d "$(DESTDIR)/$(DBIN)"
+        install -d "$(DESTDIR)/$(DFDI)"
+        install -m 755 $(TBIN) "$(DESTDIR)/$(DBIN)"
+        install -m 644 $(TFDI) "$(DESTDIR)/$(DFDI)"
+
diff --git a/dbus-abi.h b/dbus-abi.h
new file mode 100644
index 0000000..ed406f1
--- /dev/null
+++ b/dbus-abi.h
@@ -0,0 +1,34 @@
+/*
+ * DBUS ABI
+ *
+ * The following is all dbus information needed in order to compile
+ * a hald-addon.
+ */
+
+/* Structure declarations */
+struct DBusMessage;
+
+/* Allocate 32 bytes for the error structure. */
+struct DBusError {
+        char bytes[32];
+};
+
+/* Define DBus arguments types */
+const int DBUS_TYPE_INVALID;
+const int DBUS_TYPE_INT32 = 'i';
+const int DBUS_TYPE_ARRAY = 'a';
+
+/* Define DBus handler results */
+typedef enum {
+        DBUS_HANDLER_RESULT_HANDLED,
+        DBUS_HANDLER_RESULT_NOT_YET_HANDLED,
+        DBUS_HANDLER_RESULT_NEED_MEMORY
+} DBusHandlerResult;
+
+/* Function declarations */
+struct DBusMessage *
+dbus_message_new_error(struct DBusMessage *reply_to, const char *error_name,
+        const char *error_message);
+struct DBusMessage *
+dbus_message_new_method_return(struct DBusMessage *method_call);
+
diff --git a/debian/README.Debian b/debian/README.Debian
new file mode 100644
index 0000000..67859ad
--- /dev/null
+++ b/debian/README.Debian
@@ -0,0 +1,14 @@
+hal-nvidia-bl package for Debian
+
+This package adds LCD backlight support via the nvidia-bl sysfs
+interface.
+
+* Install the debian package
+
+* Restart hal
+
+* Restart gnome-power-manager
+
+Enjoy!
+
+Henrik Rydberg <rydberg@euromail.se>
diff --git a/debian/changelog b/debian/changelog
new file mode 100644
index 0000000..458b1a6
--- /dev/null
+++ b/debian/changelog
@@ -0,0 +1,5 @@
+hal-nvidia-bl (0.1.0) unstable; urgency=low
+
+  * Add LCD backlight support for nvidia-bl
+
+ -- Henrik Rydberg <rydberg@euromail.se>  Sat, 25 Oct 2008 20:12:00 +0200
diff --git a/debian/compat b/debian/compat
new file mode 100644
index 0000000..7ed6ff8
--- /dev/null
+++ b/debian/compat
@@ -0,0 +1 @@
+5
diff --git a/debian/control b/debian/control
new file mode 100644
index 0000000..04dbc2d
--- /dev/null
+++ b/debian/control
@@ -0,0 +1,17 @@
+Source: hal-nvidia-bl
+Section: misc
+Priority: optional
+Maintainer: Henrik Rydberg <rydberg@euromail.se>
+Build-Depends: debhelper (>= 5),
+               libhal-dev (>= 0.5.8),
+               libdbus-glib-1-dev (>= 0.71)
+Standards-Version: 3.7.2
+Homepage: http://bitmath.org/code/hal-nvidia-bl/
+
+Package: hal-nvidia-bl
+Architecture: any
+Depends: bash (>> 1.99)
+Description: LCD backlight support
+ This package adds LCD backlight support via the nvidia-bl sysfs
+ interface.
+
diff --git a/debian/copyright b/debian/copyright
new file mode 100644
index 0000000..b0aa765
--- /dev/null
+++ b/debian/copyright
@@ -0,0 +1,27 @@
+Source URL: http://bitmath.org/code/hal-nvidia-bl/
+
+Upstream Author: Henrik Rydberg <rydberg@euromail.se>
+
+Copyright:
+        Copyright (C) 2008      Henrik Rydberg (rydberg@euromail.se)
+
+License:
+
+        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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+Packaging:
+        Copyright (C) 2008 by Henrik Rydberg <rydberg@euromail.se>
+        released under GPL 2
+
diff --git a/debian/dirs b/debian/dirs
new file mode 100644
index 0000000..ced47fc
--- /dev/null
+++ b/debian/dirs
@@ -0,0 +1,3 @@
+usr/share/hal/fdi/policy/10osvendor
+usr/lib/hal
+
diff --git a/debian/rules b/debian/rules
new file mode 100755
index 0000000..90568c9
--- /dev/null
+++ b/debian/rules
@@ -0,0 +1,46 @@
+#!/usr/bin/make -f
+# -*- makefile -*-
+
+# Uncomment this to turn on verbose mode.
+#export DH_VERBOSE=1
+
+build-arch:
+        dh_testdir
+        $(MAKE)
+
+build-indep:
+
+build: build-arch build-indep
+
+install:
+        dh_testdir
+        dh_testroot
+        dh_clean -k
+        dh_installdirs
+        $(MAKE) DESTDIR=$(CURDIR)/debian/hal-applesmc install
+
+binary-arch: build-arch install
+        dh_testdir
+        dh_testroot
+        dh_link
+        dh_strip
+        dh_compress
+        dh_fixperms
+        dh_installdeb
+        dh_shlibdeps
+        dh_gencontrol
+        dh_md5sums
+        dh_builddeb
+
+binary-indep: build-indep
+
+binary: binary-arch binary-indep
+
+clean:
+        dh_testdir
+        dh_testroot
+        $(MAKE) clean
+        dh_clean
+
+.PHONY: build-arch build-indep build install binary-arch binary-indep binary clean
+
diff --git a/fdi/10-applesmc.fdi b/fdi/10-applesmc.fdi
new file mode 100644
index 0000000..89f0014
--- /dev/null
+++ b/fdi/10-applesmc.fdi
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<deviceinfo version="0.2">
+
+  <device>
+    <match key="platform.id" contains="applesmc">
+     <spawn udi="/org/freedesktop/Hal/devices/applesmc_keyboard_backlight"/>
+     <spawn udi="/org/freedesktop/Hal/devices/applesmc_light_sensor"/>
+    </match>
+  </device>
+
+  <device>
+    <match key="info.udi" string="/org/freedesktop/Hal/devices/applesmc_keyboard_backlight">
+      <append key="info.capabilities" type="strlist">keyboard_backlight</append>
+      <merge key="info.product" type="string">Applesmc Keyboard Backlight</merge>
+      <merge key="keyboard_backlight.num_levels" type="int">256</merge>
+      <merge key="keyboard_backlight.access_method" type="string">custom</merge>
+      <merge key="linux.sysfs_path" type="string">/sys/class/leds/smc::kbd_backlight</merge>
+      <append key="info.addons" type="strlist">hald-addon-generic-kbd-backlight</append>
+    </match>
+  </device>
+
+  <device>
+    <match key="info.udi" string="/org/freedesktop/Hal/devices/applesmc_light_sensor">
+      <append key="info.capabilities" type="strlist">light_sensor</append>
+      <merge key="info.product" type="string">Applesmc Light Sensor</merge>
+      <merge key="light_sensor.num_sensors" type="int">1</merge>
+      <merge key="light_sensor.num_levels" type="int">256</merge>
+      <append key="light_sensor.sensor_locations" type="strlist">left</append>
+      <merge key="light_sensor.access_method" type="string">custom</merge>
+      <merge key="linux.sysfs_path" type="string">/sys/devices/platform/applesmc.768/light</merge>
+      <append key="info.addons" type="strlist">hald-addon-generic-light-sensor</append>
+    </match>
+  </device>
+
+</deviceinfo>
diff --git a/glib-abi.h b/glib-abi.h
new file mode 100644
index 0000000..62b85d5
--- /dev/null
+++ b/glib-abi.h
@@ -0,0 +1,19 @@
+/*
+ * GLIB ABI
+ *
+ * The following is all glib information needed in order to compile
+ * a hald-addon.
+ */
+
+/* logical values */
+const int TRUE = 1;
+const int FALSE;
+
+/* Structure declarations */
+struct GMainContext;
+struct GMainLoop;
+
+/* Function declarations */
+struct GMainLoop *g_main_loop_new(struct GMainContext *context, int is_running);
+void g_main_loop_run(struct GMainLoop *loop);
+
diff --git a/hal-abi.h b/hal-abi.h
new file mode 100644
index 0000000..277580f
--- /dev/null
+++ b/hal-abi.h
@@ -0,0 +1,28 @@
+/*
+ * HAL ABI
+ *
+ * The following is all hal information needed in order to compile
+ * a hald-addon.
+ */
+
+/* Structure declarations */
+struct LibHalContext;
+struct DBusConnection;
+
+/* Simple error handling */
+#define setup_logger()
+#define eprintf(...) (fprintf(stderr, __VA_ARGS__), fprintf(stderr, "\n"))
+#define WARNING(...) eprintf("addon-warning: " __VA_ARGS__)
+#define DEBUG(...) eprintf("addon-debug: " __VA_ARGS__)
+#define ERROR(...) eprintf("addon-error: " __VA_ARGS__)
+#define HAL_WARNING(x) WARNING x
+#define HAL_DEBUG(x) DEBUG x
+#define HAL_ERROR(x) ERROR x
+
+/* Function declarations */
+struct LibHalContext *
+libhal_ctx_init_direct(struct DBusError *error);
+
+struct DBusConnection *
+libhal_ctx_get_dbus_connection(struct LibHalContext *ctx);
+
diff --git a/hald-addon-generic-backlight.c b/hald-addon-generic-backlight.c
new file mode 100644
index 0000000..537ab69
--- /dev/null
+++ b/hald-addon-generic-backlight.c
@@ -0,0 +1,241 @@
+/***************************************************************************
+ *
+ * addon-generic-kbd-backlight.c:
+ * Copyright (C) 2008 Henrik Rydberg <rydberg@euromail.se>
+ *
+ * Based on addon-generic-backlight.c:
+ * Copyright (C) 2008 Danny Kukawka <danny.kukawka@web.de>
+ *
+ * Licensed under the Academic Free License version 2.1
+ *
+ * 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ **************************************************************************/
+
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "glib-abi.h"
+#include "dbus-abi.h"
+#include "hal-abi.h"
+
+#define HAL_PROPERTY "org.freedesktop.Hal.Device.KeyboardBacklight"
+
+static const char prop_name[] = HAL_PROPERTY;
+static const char prop_invalid[] = HAL_PROPERTY ".Invalid";
+static const char prop_set[] = "SetBrightness";
+static const char prop_get[] = "GetBrightness";
+
+static struct GMainLoop *main_loop;
+static struct LibHalContext *halctx;
+static struct DBusConnection *conn;
+
+static char sysfs_path[512];
+static int levels;
+
+/**
+ * Get keyboard backlight level
+ *
+ * Tries to read from the specified sysfs device, and if successful,
+ * updates the internal keyboard backlight state. Warns if the device
+ * cannot be opened or be read from. Always returns the last succesful
+ * read.
+ */
+static int get_kbd_backlight()
+{
+        static int level;
+        int fd;
+        char buf[64];
+
+        fd = open(sysfs_path, O_RDONLY);
+        if (fd < 0) {
+                HAL_WARNING(("Could not open '%s'", sysfs_path));
+                return level;
+        }
+
+        memset(buf, 0, sizeof(buf));
+        if (read(fd, buf, sizeof(buf)) < 0)
+                HAL_WARNING(("Could not read from '%s'", sysfs_path));
+        else
+                level = atoi(buf);
+
+        close(fd);
+        return level;
+}
+
+/**
+ * Set keyboard backlight level
+ *
+ * Warns if the device cannot be opened or be written to.
+ * Returns bytes written on success, negative value on failure.
+ */
+static int set_kbd_backlight(int level)
+{
+        int fd, ret;
+        char buf[64];
+
+        sprintf(buf, "%d", level);
+
+        fd = open(sysfs_path, O_WRONLY);
+        if (fd < 0) {
+                HAL_WARNING(("Could not open '%s'", sysfs_path));
+                return -1;
+        }
+
+        ret = write(fd, buf, strlen(buf));
+        if (ret < 0)
+                HAL_WARNING(("Could not write '%s' to '%s'", buf, sysfs_path));
+
+        close(fd);
+        return ret;
+}
+
+/* DBus set keyboard backlight level */
+static struct DBusMessage *dbus_get_kbd_backlight(struct DBusMessage *msg)
+{
+        struct DBusError err;
+        struct DBusMessage *reply;
+        int level;
+
+        dbus_error_init(&err);
+        if (!dbus_message_get_args(msg, &err, DBUS_TYPE_INVALID))
+                return dbus_message_new_error(msg, prop_invalid,
+                        "Invalid message");
+
+        level = get_kbd_backlight();
+
+        reply = dbus_message_new_method_return(msg);
+        if (reply)
+                dbus_message_append_args(reply, DBUS_TYPE_INT32, &level,
+                        DBUS_TYPE_INVALID);
+
+        return reply;
+}
+
+/* DBus set keyboard backlight level */
+static struct DBusMessage *dbus_set_kbd_backlight(struct DBusMessage *msg)
+{
+        struct DBusError err;
+        int level;
+
+        dbus_error_init(&err);
+        if (!dbus_message_get_args(msg, &err, DBUS_TYPE_INT32, &level,
+                        DBUS_TYPE_INVALID))
+                return dbus_message_new_error(msg, prop_invalid,
+                        "Brightness level argument missing");
+
+        if (level < 0 || level > levels - 1)
+                return dbus_message_new_error(msg, prop_invalid,
+                        "Brightness level is invalid");
+
+        set_kbd_backlight(level);
+
+        return dbus_message_new_method_return(msg);
+}
+
+/* DBus filter function */
+static DBusHandlerResult filter_function(struct DBusConnection *connection,
+                                         struct DBusMessage *message,
+                                         void *userdata)
+{
+        struct DBusMessage *reply = NULL;
+
+        if (dbus_message_is_method_call(message, prop_name, prop_get))
+                reply = dbus_get_kbd_backlight(message);
+        else if (dbus_message_is_method_call(message, prop_name, prop_set))
+                reply = dbus_set_kbd_backlight(message);
+
+        if (reply) {
+                dbus_connection_send(connection, reply, NULL);
+                dbus_message_unref(reply);
+        }
+
+        return DBUS_HANDLER_RESULT_HANDLED;
+}
+
+int main(int argc, char *argv[])
+{
+        struct DBusError err;
+        struct stat fs;
+
+        char *udi = getenv("UDI");
+        char *path = getenv("HAL_PROP_LINUX_SYSFS_PATH");
+        char *level_str = getenv("HAL_PROP_KEYBOARD_BACKLIGHT_NUM_LEVELS");
+
+        setup_logger();
+
+        if (udi == NULL) {
+                HAL_ERROR(("No device specified"));
+                return -2;
+        }
+        if (path == NULL) {
+                HAL_ERROR(("No sysfs path specified"));
+                return -2;
+        }
+        if (level_str == NULL) {
+                HAL_ERROR(("No keyboard_backlight.num_levels defined"));
+                return -2;
+        }
+
+        levels = atoi(level_str);
+        snprintf(sysfs_path, sizeof(sysfs_path), "%s/brightness", path);
+
+        HAL_DEBUG(("udi='%s', path='%s', levels='%d'", udi, path, levels));
+
+        if (stat(sysfs_path, &fs)) {
+                HAL_ERROR(("The sysfs property path does not exist"));
+                return -2;
+        }
+
+        dbus_error_init(&err);
+        halctx = libhal_ctx_init_direct(&err);
+
+        if (halctx == NULL) {
+                HAL_ERROR(("Cannot connect to hald"));
+                return -3;
+        }
+
+        conn = libhal_ctx_get_dbus_connection(halctx);
+        dbus_connection_setup_with_g_main(conn, NULL);
+
+        dbus_connection_add_filter(conn, filter_function, NULL, NULL);
+
+        if (!libhal_device_claim_interface(halctx, udi, prop_name,
+                "    <method name=\"GetBrightness\">\n"
+                "      <arg name=\"brightness_value\" direction=\"out\" type=\"i\"/>\n"
+                "    </method>\n"
+                "    <method name=\"SetBrightness\">\n"
+                "      <arg name=\"brightness_value\" direction=\"in\" type=\"i\"/>\n"
+                "    </method>\n",
+                &err)) {
+                HAL_ERROR(("Cannot claim interface '" HAL_PROPERTY "'"));
+                return -4;
+        }
+
+        dbus_error_init(&err);
+        if (!libhal_device_addon_is_ready(halctx, udi, &err))
+                return -4;
+
+        main_loop = g_main_loop_new(NULL, FALSE);
+        g_main_loop_run(main_loop);
+
+        return 0;
+}
+