hydrogen: Add KeyDisabler

Change-Id: Ia9ed5792d234e19a6bc5da8130cf5a380ae078db

3 files changed, 51 insertions, 0 deletions

diff --git a/BoardConfig.mk b/BoardConfig.mk
index fae2af2..827c0da 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -24,6 +24,9 @@ TARGET_OTA_ASSERT_DEVICE := hydrogen
 # Bluetooth
 BOARD_BLUETOOTH_BDROID_BUILDCFG_INCLUDE_DIR := $(DEVICE_PATH)/bluetooth
 
+# CMHW
+BOARD_HARDWARE_CLASS += $(DEVICE_PATH)/cmhw
+
 # Filesystem
 BOARD_SYSTEMIMAGE_PARTITION_SIZE := 3221225472
 BOARD_USERDATAIMAGE_PARTITION_SIZE := 26705099776 # 26705116160 - 16384
diff --git a/cmhw/org/cyanogenmod/hardware/KeyDisabler.java b/cmhw/org/cyanogenmod/hardware/KeyDisabler.java
new file mode 100644
index 0000000..0ae8ead
--- /dev/null
+++ b/cmhw/org/cyanogenmod/hardware/KeyDisabler.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+package org.cyanogenmod.hardware;
+
+import org.cyanogenmod.internal.util.FileUtils;
+
+/*
+ * Disable capacitive keys
+ *
+ * This is intended for use on devices in which the capacitive keys
+ * can be fully disabled for replacement with a soft navbar. You
+ * really should not be using this on a device with mechanical or
+ * otherwise visible-when-inactive keys
+ */
+
+public class KeyDisabler {
+
+    private static String CONTROL_PATH = "/sys/bus/i2c/devices/i2c-4/4-0038/keypad_mode";
+
+    public static boolean isSupported() {
+        return FileUtils.isFileWritable(CONTROL_PATH);
+    }
+
+    public static boolean isActive() {
+        return FileUtils.readOneLine(CONTROL_PATH).equals("0");
+    }
+
+    public static boolean setActive(boolean state) {
+        return FileUtils.writeLine(CONTROL_PATH, (state ? "0" : "1"));
+    }
+
+}
diff --git a/rootdir/etc/init.target.rc b/rootdir/etc/init.target.rc
index 6dc3202..6cd6344 100644
--- a/rootdir/etc/init.target.rc
+++ b/rootdir/etc/init.target.rc
@@ -30,6 +30,8 @@
 on early-boot
     chown system radio /sys/bus/i2c/devices/i2c-4/4-0038/wakeup_mode
     chmod 0664 /sys/bus/i2c/devices/i2c-4/4-0038/wakeup_mode
+    chown system system /sys/bus/i2c/devices/i2c-4/4-0038/keypad_mode
+    chmod 0664 /sys/bus/i2c/devices/i2c-4/4-0038/keypad_mode
 
 service mmbn-daemon /system/bin/mmbn-daemon
     class main