drm/nouveau/device: register for acpi events

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/Makefile b/drivers/gpu/drm/nouveau/Makefile
index b530d49..e5c9886 100644 (file)
--- a/drivers/gpu/drm/nouveau/Makefile
+++ b/drivers/gpu/drm/nouveau/Makefile
@@ -213,6 +213,7 @@ nouveau-y += core/engine/copy/nvc0.o
 nouveau-y += core/engine/copy/nve0.o
 nouveau-y += core/engine/crypt/nv84.o
 nouveau-y += core/engine/crypt/nv98.o
+nouveau-y += core/engine/device/acpi.o
 nouveau-y += core/engine/device/base.o
 nouveau-y += core/engine/device/ctrl.o
 nouveau-y += core/engine/device/nv04.o

diff --git a/drivers/gpu/drm/nouveau/core/engine/device/acpi.c b/drivers/gpu/drm/nouveau/core/engine/device/acpi.c
new file mode 100644 (file)
index 0000000..79a2e4d
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/engine/device/acpi.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2014 Red Hat Inc.
+ *
+ * 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ *
+ * Authors: Ben Skeggs
+ */
+
+#include "acpi.h"
+
+#ifdef CONFIG_ACPI
+static int
+nvkm_acpi_ntfy(struct notifier_block *nb, unsigned long val, void *data)
+{
+       struct nouveau_device *device =
+               container_of(nb, typeof(*device), acpi.nb);
+       struct acpi_bus_event *info = data;
+
+       if (!strcmp(info->device_class, "ac_adapter"))
+               nouveau_event_trigger(device->ntfy, 1, NVKM_DEVICE_NTFY_POWER);
+
+       return NOTIFY_DONE;
+}
+#endif
+
+int
+nvkm_acpi_fini(struct nouveau_device *device, bool suspend)
+{
+#ifdef CONFIG_ACPI
+       unregister_acpi_notifier(&device->acpi.nb);
+#endif
+       return 0;
+}
+
+int
+nvkm_acpi_init(struct nouveau_device *device)
+{
+#ifdef CONFIG_ACPI
+       device->acpi.nb.notifier_call = nvkm_acpi_ntfy;
+       register_acpi_notifier(&device->acpi.nb);
+#endif
+       return 0;
+}

diff --git a/drivers/gpu/drm/nouveau/core/engine/device/acpi.h b/drivers/gpu/drm/nouveau/core/engine/device/acpi.h
new file mode 100644 (file)
index 0000000..cc49f4f
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/engine/device/acpi.h
@@ -0,0 +1,9 @@
+#ifndef __NVKM_DEVICE_ACPI_H__
+#define __NVKM_DEVICE_ACPI_H__
+
+#include <engine/device.h>
+
+int nvkm_acpi_init(struct nouveau_device *);
+int nvkm_acpi_fini(struct nouveau_device *, bool);
+
+#endif

diff --git a/drivers/gpu/drm/nouveau/core/engine/device/base.c b/drivers/gpu/drm/nouveau/core/engine/device/base.c
index 18c8c72..466dda2 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/engine/device/base.c
+++ b/drivers/gpu/drm/nouveau/core/engine/device/base.c
@@ -30,6 +30,7 @@
 #include <core/class.h>
 
 #include "priv.h"
+#include "acpi.h"
 
 static DEFINE_MUTEX(nv_devices_mutex);
 static LIST_HEAD(nv_devices);
@@ -386,7 +387,7 @@ nouveau_device_fini(struct nouveau_object *object, bool suspend)
                }
        }
 
-       ret = 0;
+       ret = nvkm_acpi_fini(device, suspend);
 fail:
        for (; ret && i < NVDEV_SUBDEV_NR; i++) {
                if ((subdev = device->subdev[i])) {
@@ -407,7 +408,11 @@ nouveau_device_init(struct nouveau_object *object)
 {
        struct nouveau_device *device = (void *)object;
        struct nouveau_object *subdev;
-       int ret, i;
+       int ret, i = 0;
+
+       ret = nvkm_acpi_init(device);
+       if (ret)
+               goto fail;
 
        for (i = 0; i < NVDEV_SUBDEV_NR; i++) {
                if ((subdev = device->subdev[i])) {
@@ -430,6 +435,8 @@ fail:
                }
        }
 
+       if (ret)
+               nvkm_acpi_fini(device, false);
        return ret;
 }
 
@@ -438,6 +445,8 @@ nouveau_device_dtor(struct nouveau_object *object)
 {
        struct nouveau_device *device = (void *)object;
 
+       nouveau_event_destroy(&device->ntfy);
+
        mutex_lock(&nv_devices_mutex);
        list_del(&device->head);
        mutex_unlock(&nv_devices_mutex);
@@ -560,6 +569,8 @@ nouveau_device_create_(void *dev, enum nv_bus_type type, u64 name,
        nv_subdev(device)->debug = nouveau_dbgopt(device->dbgopt, "DEVICE");
        nv_engine(device)->sclass = nouveau_device_sclass;
        list_add(&device->head, &nv_devices);
+
+       ret = nouveau_event_create(1, NVKM_DEVICE_NTFY, &device->ntfy);
 done:
        mutex_unlock(&nv_devices_mutex);
        return ret;

diff --git a/drivers/gpu/drm/nouveau/core/include/core/device.h b/drivers/gpu/drm/nouveau/core/include/core/device.h
index a8a9a9c..9ce2ee9 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/include/core/device.h
+++ b/drivers/gpu/drm/nouveau/core/include/core/device.h
@@ -4,6 +4,7 @@
 #include <core/object.h>
 #include <core/subdev.h>
 #include <core/engine.h>
+#include <core/event.h>
 
 enum nv_subdev_type {
        NVDEV_ENGINE_DEVICE,
@@ -61,6 +62,11 @@ enum nv_subdev_type {
        NVDEV_SUBDEV_NR,
 };
 
+enum nvkm_device_ntfy {
+       NVKM_DEVICE_NTFY_POWER = 0,
+       NVKM_DEVICE_NTFY
+};
+
 struct nouveau_device {
        struct nouveau_engine base;
        struct list_head head;
@@ -69,6 +75,8 @@ struct nouveau_device {
        struct platform_device *platformdev;
        u64 handle;
 
+       struct nouveau_event *ntfy;
+
        const char *cfgopt;
        const char *dbgopt;
        const char *name;
@@ -93,6 +101,10 @@ struct nouveau_device {
 
        struct nouveau_oclass *oclass[NVDEV_SUBDEV_NR];
        struct nouveau_object *subdev[NVDEV_SUBDEV_NR];
+
+       struct {
+               struct notifier_block nb;
+       } acpi;
 };
 
 static inline struct nouveau_device *