klte-common: Add PowerHAL extension for capacitive keys

* Add extension to disable touchkeys when display blank is triggered

Change-Id: I83060caa6b894fc3b80e5907acc3c483fc6176cb

BoardConfigCommon.mk

@@ -63,6 +63,7 @@ BOARD_FLASH_BLOCK_SIZE := 131072
 TARGET_USERIMAGES_USE_EXT4 := true
 
 # Power HAL
+TARGET_POWERHAL_SET_INTERACTIVE_EXT := $(LOCAL_PATH)/power/power_ext.c
 TARGET_POWERHAL_VARIANT := qcom
 
 # Recovery

power/power_ext.c

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2014 The CyanogenMod 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.
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <fcntl.h>
+
+#define LOG_TAG "PowerHAL_H_Ext"
+#include <utils/Log.h>
+
+#define TSP_POWER "/sys/class/input/input1/enabled"
+
+static void sysfs_write(char *path, char *s) {
+    char buf[80];
+    int len;
+    int fd = open(path, O_WRONLY);
+
+    if (fd < 0) {
+        strerror_r(errno, buf, sizeof(buf));
+        ALOGE("Error opening %s: %s\n", path, buf);
+        return;
+    }
+
+    len = write(fd, s, strlen(s));
+    if (len < 0) {
+        strerror_r(errno, buf, sizeof(buf));
+        ALOGE("Error writing to %s: %s\n", path, buf);
+    }
+
+    close(fd);
+}
+
+void cm_power_set_interactive_ext(int on) {
+    ALOGD("%s: %s input devices", __func__, on ? "enabling" : "disabling");
+    sysfs_write(TSP_POWER, on ? "1" : "0");
+}