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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
*
* Copyright (C) 2010 Richard Hughes <richard@hughsie.com>
*
* 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
*
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <glib-object.h>
#include <gudev/gudev.h>
#include "up-daemon.h"
#include "up-dock.h"
struct UpDockPrivate
{
UpDaemon *daemon;
GUdevClient *gudev_client;
guint poll_id;
};
G_DEFINE_TYPE (UpDock, up_dock, G_TYPE_OBJECT)
#define UP_DOCK_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), UP_TYPE_DOCK, UpDockPrivate))
/* the kernel is pretty crap at sending a uevent when the status changes */
#define UP_DOCK_POLL_TIMEOUT 30
/**
* up_dock_device_check:
**/
static gboolean
up_dock_device_check (GUdevDevice *d)
{
const gchar *status;
gboolean ret = FALSE;
/* Get the boolean state from the kernel -- note that ideally
* the property value would be "1" or "true" but now it's
* set in stone as ABI. Urgh. */
status = g_udev_device_get_sysfs_attr (d, "status");
if (status == NULL)
goto out;
ret = (g_strcmp0 (status, "connected") == 0);
g_debug ("graphics device %s is %s",
g_udev_device_get_sysfs_path (d),
ret ? "on" : "off");
out:
return ret;
}
/**
* up_dock_refresh:
**/
static gboolean
up_dock_refresh (UpDock *dock)
{
GList *devices;
GList *l;
GUdevDevice *native;
guint count = 0;
/* the metric we're using here is that a machine is docked when
* there is more than one active output */
devices = g_udev_client_query_by_subsystem (dock->priv->gudev_client,
"drm");
for (l = devices; l != NULL; l = l->next) {
native = l->data;
count += up_dock_device_check (native);
}
g_list_foreach (devices, (GFunc) g_object_unref, NULL);
g_list_free (devices);
/* update the daemon state, which causes DBus traffic */
up_daemon_set_is_docked (dock->priv->daemon, (count > 1));
return TRUE;
}
/**
* up_dock_poll_cb:
**/
static gboolean
up_dock_poll_cb (UpDock *dock)
{
g_debug ("Doing the dock refresh");
up_dock_refresh (dock);
return TRUE;
}
/**
* up_dock_coldplug:
**/
void
up_dock_set_should_poll (UpDock *dock, gboolean should_poll)
{
if (should_poll && dock->priv->poll_id == 0) {
dock->priv->poll_id = g_timeout_add_seconds (UP_DOCK_POLL_TIMEOUT,
(GSourceFunc) up_dock_poll_cb,
dock);
} else if (dock->priv->poll_id > 0) {
g_source_remove (dock->priv->poll_id);
dock->priv->poll_id = 0;
}
}
/**
* up_dock_coldplug:
**/
gboolean
up_dock_coldplug (UpDock *dock, UpDaemon *daemon)
{
/* save daemon */
dock->priv->daemon = g_object_ref (daemon);
return up_dock_refresh (dock);
}
/**
* up_dock_uevent_signal_handler_cb:
**/
static void
up_dock_uevent_signal_handler_cb (GUdevClient *client, const gchar *action,
GUdevDevice *device, gpointer user_data)
{
UpDock *dock = UP_DOCK (user_data);
up_dock_refresh (dock);
}
/**
* up_dock_init:
**/
static void
up_dock_init (UpDock *dock)
{
const gchar *subsystems[] = { "drm", NULL};
dock->priv = UP_DOCK_GET_PRIVATE (dock);
dock->priv->gudev_client = g_udev_client_new (subsystems);
g_signal_connect (dock->priv->gudev_client, "uevent",
G_CALLBACK (up_dock_uevent_signal_handler_cb), dock);
}
/**
* up_dock_finalize:
**/
static void
up_dock_finalize (GObject *object)
{
UpDock *dock;
g_return_if_fail (object != NULL);
g_return_if_fail (UP_IS_DOCK (object));
dock = UP_DOCK (object);
g_return_if_fail (dock->priv != NULL);
g_object_unref (dock->priv->gudev_client);
if (dock->priv->daemon != NULL)
g_object_unref (dock->priv->daemon);
if (dock->priv->poll_id != 0)
g_source_remove (dock->priv->poll_id);
G_OBJECT_CLASS (up_dock_parent_class)->finalize (object);
}
/**
* up_dock_class_init:
**/
static void
up_dock_class_init (UpDockClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = up_dock_finalize;
g_type_class_add_private (klass, sizeof (UpDockPrivate));
}
/**
* up_dock_new:
**/
UpDock *
up_dock_new (void)
{
return g_object_new (UP_TYPE_DOCK, NULL);
}
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