From 7f7cafe7293570d56607b101cac7db617741713d Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Tue, 24 Jan 2012 10:50:05 +0100 Subject: testdisplay: extract hotplug code Signed-Off-by: Daniel Vetter --- tests/testdisplay_hotplug.c | 121 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 121 insertions(+) create mode 100644 tests/testdisplay_hotplug.c (limited to 'tests/testdisplay_hotplug.c') diff --git a/tests/testdisplay_hotplug.c b/tests/testdisplay_hotplug.c new file mode 100644 index 00000000..504e7b08 --- /dev/null +++ b/tests/testdisplay_hotplug.c @@ -0,0 +1,121 @@ +/* + * Copyright 2010 Intel Corporation + * Jesse Barnes + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +#include +#include +#include +#include + +#include "testdisplay.h" + +static struct udev_monitor *uevent_monitor; +static struct udev *udev; +static GIOChannel *udevchannel; + +static gboolean hotplug_event(GIOChannel *source, GIOCondition condition, + gpointer data) +{ + struct udev_device *dev; + dev_t udev_devnum; + struct stat s; + const char *hotplug; + + dev = udev_monitor_receive_device(uevent_monitor); + if (!dev) + goto out; + + udev_devnum = udev_device_get_devnum(dev); + fstat(drm_fd, &s); + + hotplug = udev_device_get_property_value(dev, "HOTPLUG"); + + if (memcmp(&s.st_rdev, &udev_devnum, sizeof(dev_t)) == 0 && + hotplug && atoi(hotplug) == 1) + update_display(); + + udev_device_unref(dev); +out: + return TRUE; +} + + +gboolean testdisplay_setup_hotplug(void) +{ + int ret; + + udev = udev_new(); + if (!udev) { + fprintf(stderr, "failed to create udev object\n"); + goto out; + } + + uevent_monitor = udev_monitor_new_from_netlink(udev, "udev"); + if (!uevent_monitor) { + fprintf(stderr, "failed to create udev event monitor\n"); + goto out; + } + + ret = udev_monitor_filter_add_match_subsystem_devtype(uevent_monitor, + "drm", + "drm_minor"); + if (ret < 0) { + fprintf(stderr, "failed to filter for drm events\n"); + goto out; + } + + ret = udev_monitor_enable_receiving(uevent_monitor); + if (ret < 0) { + fprintf(stderr, "failed to enable udev event reception\n"); + goto out; + } + + udevchannel = + g_io_channel_unix_new(udev_monitor_get_fd(uevent_monitor)); + if (!udevchannel) { + fprintf(stderr, "failed to create udev GIO channel\n"); + goto out; + } + + ret = g_io_add_watch(udevchannel, G_IO_IN | G_IO_ERR, hotplug_event, + udev); + if (ret < 0) { + fprintf(stderr, "failed to add watch on udev GIO channel\n"); + goto out; + } + + return TRUE; + +out: + testdisplay_cleanup_hotplug(); + return FALSE; +} + +void testdisplay_cleanup_hotplug(void) +{ + if (udevchannel) + g_io_channel_shutdown(udevchannel, TRUE, NULL); + if (uevent_monitor) + udev_monitor_unref(uevent_monitor); + if (udev) + udev_unref(udev); +} -- cgit v1.2.3