upload android base code part6

android/device/generic/goldfish/power/power_qemu.c

@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "emulator PowerHAL"
+#include <utils/Log.h>
+
+#include <hardware/hardware.h>
+#include <hardware/power.h>
+#include "qemud.h"
+#include <fcntl.h>
+#include <errno.h>
+
+static int qemud_fd;
+
+static void power_qemu_init(struct power_module *module)
+{
+    qemud_fd = qemud_channel_open("hw-control");
+
+    if (qemud_fd < 0)
+        ALOGE("Error connecting to qemud hw-control service\n");
+}
+
+static void power_qemu_set_interactive(struct power_module *module, int on)
+{
+    int r;
+
+    r = qemud_channel_send(qemud_fd, on ? "power:screen_state:wake"
+                           : "power:screen_state:standby", -1);
+
+    if (r < 0)
+        ALOGE("Error sending power command to qemud hw-control service\n");
+}
+
+static struct hw_module_methods_t power_qemu_module_methods = {
+    .open = NULL,
+};
+
+struct power_module HAL_MODULE_INFO_SYM = {
+    .common = {
+        .tag = HARDWARE_MODULE_TAG,
+        .version_major = 1,
+        .version_minor = 0,
+        .id = POWER_HARDWARE_MODULE_ID,
+        .name = "Emulator Power HAL",
+        .author = "The Android Open Source Project",
+        .methods = &power_qemu_module_methods,
+    },
+
+    .init = power_qemu_init,
+    .setInteractive = power_qemu_set_interactive,
+};