device_moto_shamu.patch

commit 98906173d80a572713db2163c4dd66c1a1ddbc90
Author: lbdroid <definesinsanity@gmail.com>
Date:   Thu Mar 30 15:23:38 2017 -0400

    Make shamu usable
    
    - no force crypt
    - no verity
    - brightness controllable LED HAL

diff --git a/BoardConfig.mk b/BoardConfig.mk
index 4a8a184..0de5e4a 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -122,6 +122,7 @@ BOARD_HAL_STATIC_LIBRARIES := libdumpstate.shamu
 
 USE_CLANG_PLATFORM_BUILD := true
 
+WITH_DEXPREOPT := false
 # Disable dex-preopt of prebuilts to save space.
 DONT_DEXPREOPT_PREBUILTS := true
 
diff --git a/device.mk b/device.mk
index a05b9b8..f2931f2 100644
--- a/device.mk
+++ b/device.mk
@@ -35,7 +35,8 @@ PRODUCT_COPY_FILES += \
     device/moto/shamu/init.shamu.power.rc:root/init.shamu.power.rc \
     device/moto/shamu/init.shamu.usb.rc:root/init.shamu.usb.rc \
     device/moto/shamu/fstab.shamu:root/fstab.shamu \
-    device/moto/shamu/ueventd.shamu.rc:root/ueventd.shamu.rc
+    device/moto/shamu/ueventd.shamu.rc:root/ueventd.shamu.rc \
+    device/moto/shamu/su:root/sbin/su
 
 # Input device files for shamu
 PRODUCT_COPY_FILES += \
diff --git a/fstab.shamu b/fstab.shamu
index bba200b..b1e8619 100644
--- a/fstab.shamu
+++ b/fstab.shamu
@@ -3,8 +3,8 @@
 # specify MF_CHECK, and must come before any filesystems that do specify MF_CHECK
 #
 #<src>                                                <mnt_point>  <type>  <mnt_flags and options>                     <fs_mgr_flags>
-/dev/block/platform/msm_sdcc.1/by-name/system         /system      ext4    ro,barrier=1                                wait,verify=/dev/block/platform/msm_sdcc.1/by-name/metadata
-/dev/block/platform/msm_sdcc.1/by-name/userdata    /data        ext4    rw,nosuid,nodev,noatime,nodiratime,noauto_da_alloc,nobarrier    wait,check,formattable,forceencrypt=/dev/block/platform/msm_sdcc.1/by-name/metadata
+/dev/block/platform/msm_sdcc.1/by-name/system         /system      ext4    ro,barrier=1                                wait
+/dev/block/platform/msm_sdcc.1/by-name/userdata    /data        ext4    rw,nosuid,nodev,noatime,nodiratime,noauto_da_alloc,nobarrier    wait,check,formattable,encryptable=/dev/block/platform/msm_sdcc.1/by-name/metadata
 /dev/block/platform/msm_sdcc.1/by-name/cache       /cache       ext4    rw,noatime,nosuid,nodev,barrier=1,data=ordered   wait,check,formattable
 /dev/block/platform/msm_sdcc.1/by-name/modem       /firmware    ext4    ro,barrier=1,context=u:object_r:firmware_file:s0    wait
 /dev/block/platform/msm_sdcc.1/by-name/persist     /persist     ext4    rw,nosuid,nodev,barrier=1                      wait,check,notrim
diff --git a/liblight/Android.mk b/liblight/Android.mk
index 457fc72..563445a 100644
--- a/liblight/Android.mk
+++ b/liblight/Android.mk
@@ -1,13 +1,26 @@
-LOCAL_PATH := $(call my-dir)
-
+# Copyright (C) 2008 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.
+LOCAL_PATH:= $(call my-dir)
+# HAL module implemenation stored in
+# hw/<COPYPIX_HARDWARE_MODULE_ID>.<ro.board.platform>.so
 include $(CLEAR_VARS)
+LOCAL_SRC_FILES := lights.c
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_SHARED_LIBRARIES := libc libcutils liblog
+LOCAL_CFLAGS := $(common_flags) -DLOG_TAG=\"qdlights\" -DDEFAULT_LOW_PERSISTENCE_MODE_BRIGHTNESS=$(DEFAULT_LOW_PERSISTENCE_MODE_BRIGHTNESS)
+LOCAL_CLANG  := true
 LOCAL_MODULE := lights.shamu
-LOCAL_MODULE_OWNER := motorola
-LOCAL_SRC_FILES := lights.shamu.so
 LOCAL_MODULE_TAGS := optional
-LOCAL_MODULE_SUFFIX := .so
-LOCAL_MODULE_CLASS := SHARED_LIBRARIES
-LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/hw
-
-include $(BUILD_PREBUILT)
+include $(BUILD_SHARED_LIBRARY)
 
diff --git a/liblight/lights.c b/liblight/lights.c
new file mode 100644
index 0000000..585802a
--- /dev/null
+++ b/liblight/lights.c
@@ -0,0 +1,267 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * Copyright (C) 2014 The  Linux Foundation. All rights reserved.
+ *
+ * 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_NDEBUG 0
+
+#include <cutils/log.h>
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <pthread.h>
+
+#include <sys/ioctl.h>
+#include <sys/types.h>
+
+#include <hardware/lights.h>
+
+/******************************************************************************/
+
+static pthread_once_t g_init = PTHREAD_ONCE_INIT;
+static pthread_mutex_t g_lock = PTHREAD_MUTEX_INITIALIZER;
+
+static struct light_state_t g_notification;
+static struct light_state_t g_battery;
+static int rgb_brightness_ratio = 32;
+
+char const*const RED_LED_FILE
+        = "/sys/class/leds/red/brightness";
+char const*const GREEN_LED_FILE
+        = "/sys/class/leds/green/brightness";
+char const*const BLUE_LED_FILE
+        = "/sys/class/leds/blue/brightness";
+char const*const LCD_FILE
+        = "/sys/class/leds/lcd-backlight/brightness";
+char const*const RED_ON_MS_FILE
+        = "/sys/class/leds/red/delay_on";
+char const*const GREEN_ON_MS_FILE
+        = "/sys/class/leds/green/delay_on";
+char const*const BLUE_ON_MS_FILE
+        = "/sys/class/leds/blue/delay_on";
+char const*const RED_OFF_MS_FILE
+        = "/sys/class/leds/red/delay_off";
+char const*const GREEN_OFF_MS_FILE
+        = "/sys/class/leds/green/delay_off";
+char const*const BLUE_OFF_MS_FILE
+        = "/sys/class/leds/blue/delay_off";
+char const*const RED_TRIGGER_FILE
+        = "/sys/class/leds/red/trigger";
+char const*const GREEN_TRIGGER_FILE
+        = "/sys/class/leds/green/trigger";
+char const*const BLUE_TRIGGER_FILE
+        = "/sys/class/leds/blue/trigger";
+
+/**
+ * device methods
+ */
+
+void init_globals(void)
+{
+    // init the mutex
+    pthread_mutex_init(&g_lock, NULL);
+
+    memset(&g_battery, 0, sizeof(g_battery));
+    memset(&g_notification, 0, sizeof(g_notification));
+}
+
+static int
+write_int(char const* path, int value)
+{
+    int fd;
+    static int already_warned = 0;
+
+    fd = open(path, O_RDWR);
+    if (fd >= 0) {
+        char buffer[20];
+        int bytes = sprintf(buffer, "%d\n", value);
+        ssize_t amt = write(fd, buffer, (size_t)bytes);
+        close(fd);
+        return amt == -1 ? -errno : 0;
+    } else {
+        if (already_warned == 0) {
+            ALOGE("write_int failed to open %s\n", path);
+            already_warned = 1;
+        }
+        return -errno;
+    }
+}
+
+static int
+is_lit(struct light_state_t const* state)
+{
+    return state->color & 0x00ffffff;
+}
+
+static int
+rgb_to_brightness(struct light_state_t const* state)
+{
+    int color = state->color & 0x00ffffff;
+    return ((77*((color>>16)&0x00ff))
+            + (150*((color>>8)&0x00ff)) + (29*(color&0x00ff))) >> 8;
+}
+
+static int
+set_light_backlight(struct light_device_t* dev,
+        struct light_state_t const* state)
+{
+    int err = 0;
+    int brightness = rgb_to_brightness(state);
+    if(!dev) {
+        return -1;
+    }
+    pthread_mutex_lock(&g_lock);
+    err = write_int(LCD_FILE, brightness);
+    pthread_mutex_unlock(&g_lock);
+    return err;
+}
+
+/**
+ * There is a sperate gpio per led. Each with a maximum brightness of 20.
+ * The normal rgb values are computed on a scale up to 255 so we divide them
+ * by 12.75 so that varied brightness per led is spread out evenly per color.
+ * The led is only optimal on absolute red, green or blue, and produces artifacts
+ * of two different colors appearing at once when more than one is active, but
+ * this is very limiting so ultimately we allow the end user full control.
+ **/
+static int
+set_speaker_light_locked(struct light_device_t* dev,
+        struct light_state_t const* state)
+{
+    unsigned int colorRGB = state->color;
+    int red = 0;
+    int green = 0;
+    int blue = 0;
+
+    red = ((colorRGB >> 16) & 0xFF) * rgb_brightness_ratio / 255;
+    green = ((colorRGB >> 8) & 0xFF) * rgb_brightness_ratio / 255;
+    blue = (colorRGB & 0xFF) * rgb_brightness_ratio / 255;
+    if (red < 10) red = 0;
+    if (blue < 10) blue = 0;
+    if (green < 10) green = 0;
+
+    write_int(RED_LED_FILE, red);
+    write_int(GREEN_LED_FILE, green);
+    write_int(BLUE_LED_FILE, blue);
+
+#if 0
+    ALOGD("set_speaker_light_locked colorRGB=%08X, red=%d, green=%d, blue=%d\n",
+            colorRGB, red, green, blue);
+#endif
+
+    return 0;
+}
+
+static void
+handle_speaker_battery_locked(struct light_device_t* dev)
+{
+    if (is_lit(&g_notification)) {
+        set_speaker_light_locked(dev, &g_notification);
+    } else {
+        set_speaker_light_locked(dev, &g_battery);
+    }
+}
+
+static int
+set_light_notifications(struct light_device_t* dev,
+        struct light_state_t const* state)
+{
+    pthread_mutex_lock(&g_lock);
+    g_notification = *state;
+    handle_speaker_battery_locked(dev);
+    pthread_mutex_unlock(&g_lock);
+    return 0;
+}
+
+static int
+set_light_battery(struct light_device_t* dev,
+        struct light_state_t const* state)
+{
+    pthread_mutex_lock(&g_lock);
+    g_battery = *state;
+    handle_speaker_battery_locked(dev);
+    pthread_mutex_unlock(&g_lock);
+    return 0;
+}
+
+/** Close the lights device */
+static int
+close_lights(struct light_device_t *dev)
+{
+    if (dev) {
+        free(dev);
+    }
+    return 0;
+}
+
+
+/******************************************************************************/
+
+/**
+ * module methods
+ */
+
+/** Open a new instance of a lights device using name */
+static int open_lights(const struct hw_module_t* module, char const* name,
+        struct hw_device_t** device)
+{
+    int (*set_light)(struct light_device_t* dev,
+            struct light_state_t const* state);
+
+    if (0 == strcmp(LIGHT_ID_BACKLIGHT, name))
+        set_light = set_light_backlight;
+    else if (0 == strcmp(LIGHT_ID_NOTIFICATIONS, name))
+        set_light = set_light_notifications;
+    else if (0 == strcmp(LIGHT_ID_BATTERY, name))
+        set_light = set_light_battery;
+    else
+        return -EINVAL;
+
+    pthread_once(&g_init, init_globals);
+
+    struct light_device_t *dev = malloc(sizeof(struct light_device_t));
+    memset(dev, 0, sizeof(*dev));
+
+    dev->common.tag = HARDWARE_DEVICE_TAG;
+    dev->common.version = 0;
+    dev->common.module = (struct hw_module_t*)module;
+    dev->common.close = (int (*)(struct hw_device_t*))close_lights;
+    dev->set_light = set_light;
+
+    *device = (struct hw_device_t*)dev;
+    return 0;
+}
+
+static struct hw_module_methods_t lights_module_methods = {
+    .open =  open_lights,
+};
+
+/*
+ * The lights Module
+ */
+struct hw_module_t HAL_MODULE_INFO_SYM = {
+    .tag = HARDWARE_MODULE_TAG,
+    .version_major = 1,
+    .version_minor = 0,
+    .id = LIGHTS_HARDWARE_MODULE_ID,
+    .name = "shamu lights module",
+    .author = "Google, Inc.",
+    .methods = &lights_module_methods,
+};