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backends/native: React to GPU hotplug

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If a GPU is added at runtime, we should connect to it and manage
its outputs.
This commit is contained in:
Emilio Pozuelo Monfort 2018-09-17 13:03:18 +02:00
parent a6178990cd
commit ad7d6e4a37
2 changed files with 125 additions and 10 deletions
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74
src/backends/native/meta-monitor-manager-kms.c
View file

@ -2,6 +2,7 @@
/*
* Copyright (C) 2013 Red Hat Inc.
* Copyright (C) 2018 DisplayLink (UK) Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
@ -50,6 +51,15 @@
#define DRM_CARD_UDEV_DEVICE_TYPE "drm_minor"
enum
{
GPU_ADDED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
typedef struct
{
GSource source;
@ -371,6 +381,43 @@ handle_hotplug_event (MetaMonitorManager *manager)
meta_monitor_manager_on_hotplug (manager);
}
static void
handle_gpu_hotplug (MetaMonitorManagerKms *manager_kms,
GUdevDevice *device)
{
MetaMonitorManager *manager = META_MONITOR_MANAGER (manager_kms);
g_autoptr (GError) error = NULL;
const char *gpu_path;
MetaGpuKms *gpu_kms;
GList *gpus, *l;
gpu_path = g_udev_device_get_device_file (device);
gpus = meta_monitor_manager_get_gpus (manager);
for (l = gpus; l; l = l->next)
{
MetaGpuKms *gpu_kms = l->data;
if (!g_strcmp0 (gpu_path, meta_gpu_kms_get_file_path (gpu_kms)))
{
g_warning ("Failed to hotplug secondary gpu '%s': %s",
gpu_path, "device already present");
return;
}
}
gpu_kms = meta_gpu_kms_new (manager_kms, gpu_path, &error);
if (!gpu_kms)
{
g_warning ("Failed to hotplug secondary gpu '%s': %s",
gpu_path, error->message);
return;
}
meta_monitor_manager_add_gpu (manager, META_GPU (gpu_kms));
g_signal_emit (manager_kms, signals[GPU_ADDED], 0, gpu_kms);
}
static void
on_uevent (GUdevClient *client,
const char *action,
@ -380,6 +427,25 @@ on_uevent (GUdevClient *client,
MetaMonitorManagerKms *manager_kms = META_MONITOR_MANAGER_KMS (user_data);
MetaMonitorManager *manager = META_MONITOR_MANAGER (manager_kms);
if (g_str_equal (action, "add") &&
g_udev_device_get_device_file (device) != NULL)
{
MetaBackend *backend = meta_monitor_manager_get_backend (manager);
MetaBackendNative *backend_native = META_BACKEND_NATIVE (backend);
MetaLauncher *launcher = meta_backend_native_get_launcher (backend_native);
const char *device_seat;
const char *seat_id;
device_seat = g_udev_device_get_property (device, "ID_SEAT");
seat_id = meta_launcher_get_seat_id (launcher);
if (!device_seat)
device_seat = "seat0";
if (!g_strcmp0 (seat_id, device_seat))
handle_gpu_hotplug (manager_kms, device);
}
if (!g_udev_device_get_property_as_boolean (device, "HOTPLUG"))
return;
@ -754,4 +820,12 @@ meta_monitor_manager_kms_class_init (MetaMonitorManagerKmsClass *klass)
manager_class->get_capabilities = meta_monitor_manager_kms_get_capabilities;
manager_class->get_max_screen_size = meta_monitor_manager_kms_get_max_screen_size;
manager_class->get_default_layout_mode = meta_monitor_manager_kms_get_default_layout_mode;
signals[GPU_ADDED] =
g_signal_new ("gpu-added",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 1, META_TYPE_GPU_KMS);
}

61
src/backends/native/meta-renderer-native.c
View file

@ -3015,6 +3015,11 @@ meta_renderer_native_get_property (GObject *object,
}
}
static void
on_gpu_added (MetaMonitorManager *monitor_manager,
MetaGpuKms *gpu_kms,
MetaRendererNative *renderer_native);
static void
meta_renderer_native_set_property (GObject *object,
guint prop_id,
@ -3491,6 +3496,48 @@ meta_renderer_native_create_renderer_gpu_data (MetaRendererNative *renderer_nat
return NULL;
}
static gboolean
create_renderer_gpu_data (MetaRendererNative *renderer_native,
MetaGpuKms *gpu_kms,
GError **error)
{
MetaRendererNativeGpuData *renderer_gpu_data;
renderer_gpu_data =
meta_renderer_native_create_renderer_gpu_data (renderer_native,
gpu_kms,
error);
if (!renderer_gpu_data)
return FALSE;
g_hash_table_insert (renderer_native->gpu_datas,
gpu_kms,
renderer_gpu_data);
return TRUE;
}
static void
on_gpu_added (MetaMonitorManager *monitor_manager,
MetaGpuKms *gpu_kms,
MetaRendererNative *renderer_native)
{
MetaBackend *backend = meta_monitor_manager_get_backend (monitor_manager);
ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
CoglContext *cogl_context = clutter_backend_get_cogl_context (clutter_backend);
CoglDisplay *cogl_display = cogl_context_get_display (cogl_context);
GError *error = NULL;
if (!create_renderer_gpu_data (renderer_native, gpu_kms, &error))
{
g_warning ("on_gpu_added: could not create gpu_data for gpu %s: %s",
meta_gpu_kms_get_file_path (gpu_kms), error->message);
g_clear_error (&error);
}
_cogl_winsys_egl_ensure_current (cogl_display);
}
static gboolean
meta_renderer_native_initable_init (GInitable *initable,
GCancellable *cancellable,
@ -3508,18 +3555,9 @@ meta_renderer_native_initable_init (GInitable *initable,
for (l = gpus; l; l = l->next)
{
MetaGpuKms *gpu_kms = META_GPU_KMS (l->data);
MetaRendererNativeGpuData *renderer_gpu_data;
renderer_gpu_data =
meta_renderer_native_create_renderer_gpu_data (renderer_native,
gpu_kms,
error);
if (!renderer_gpu_data)
if (!create_renderer_gpu_data (renderer_native, gpu_kms, error))
return FALSE;
g_hash_table_insert (renderer_native->gpu_datas,
gpu_kms,
renderer_gpu_data);
}
return TRUE;
@ -3555,6 +3593,9 @@ meta_renderer_native_constructed (GObject *object)
settings, META_EXPERIMENTAL_FEATURE_KMS_MODIFIERS))
renderer_native->use_modifiers = TRUE;
g_signal_connect (renderer_native->monitor_manager_kms, "gpu-added",
G_CALLBACK (on_gpu_added), renderer_native);
G_OBJECT_CLASS (meta_renderer_native_parent_class)->constructed (object);
}