Initial commit of grouper files.

Change-Id: I855f4685d11d3cd16e4efbeb35ae6389045cb200
Kernel: 8dd2eab Audio: Disable UART debug cable detection to support active

2 files changed, 194 insertions, 0 deletions

diff --git a/liblights/Android.mk b/liblights/Android.mk
new file mode 100644
index 0000000..c132ebe
--- /dev/null
+++ b/liblights/Android.mk
@@ -0,0 +1,37 @@
+# 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.
+
+
+LOCAL_PATH:= $(call my-dir)
+
+ifneq ($(TARGET_SIMULATOR),true)
+
+# HAL module implemenation, not prelinked and stored in
+# hw/<COPYPIX_HARDWARE_MODULE_ID>.<ro.board.platform>.so
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := lights.c
+
+LOCAL_PRELINK_MODULE := false
+LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/hw
+
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_SHARED_LIBRARIES := liblog
+
+LOCAL_MODULE := lights.grouper
+
+include $(BUILD_SHARED_LIBRARY)
+
+endif # !TARGET_SIMULATOR
diff --git a/liblights/lights.c b/liblights/lights.c
new file mode 100644
index 0000000..88ae9ec
--- /dev/null
+++ b/liblights/lights.c
@@ -0,0 +1,157 @@
+/*
+ * 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 "lights"
+#define LOGE ALOGE
+
+#include <cutils/log.h>
+
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#include <sys/ioctl.h>
+#include <sys/types.h>
+
+#include <hardware/lights.h>
+#include <hardware/hardware.h>
+
+static pthread_mutex_t g_lock = PTHREAD_MUTEX_INITIALIZER;
+
+static int write_int(char const *path, int value)
+{
+	int fd;
+	static int already_warned = -1;
+	fd = open(path, O_RDWR);
+	if (fd >= 0) {
+		char buffer[20];
+		int bytes = sprintf(buffer, "%d\n", value);
+		int amt = write(fd, buffer, bytes);
+		close(fd);
+		return amt == -1 ? -errno : 0;
+	} else {
+		if (already_warned == -1) {
+			LOGE("write_int failed to open %s\n", path);
+			already_warned = 1;
+		}
+		return -errno;
+	}
+}
+
+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);
+	//+++ power save
+	int range_num = 1;
+	int old_brightness_range_indexs[] = {160,255};
+	int new_brightness_range_indexs[] = {160,182};
+	int old_brightness = brightness;
+	int i=0;
+	int old_brightness_in_range = -1;// 0:1~10 , 1:10~102 , 2:102~255
+	for(i=0;i<range_num;i++){
+		int t_range_min = old_brightness_range_indexs[i];
+		int t_range_max = old_brightness_range_indexs[i+1];
+		if( brightness>=t_range_min && brightness<=t_range_max){
+			old_brightness_in_range = i;
+			break;
+		}
+	}
+	if(old_brightness_in_range>=0){
+		int old_br_min = old_brightness_range_indexs[old_brightness_in_range];
+		int olb_br_max = old_brightness_range_indexs[old_brightness_in_range+1];
+		int new_br_min = new_brightness_range_indexs[old_brightness_in_range];
+		int new_br_max = new_brightness_range_indexs[old_brightness_in_range+1];
+		int new_brightness = new_br_min +
+				(new_br_max-new_br_min)*(old_brightness-old_br_min)/(olb_br_max-old_br_min);
+		brightness = new_brightness;
+	}
+	//---
+	pthread_mutex_lock(&g_lock);
+	err = write_int("/sys/class/backlight/pwm-backlight/brightness",
+			brightness);
+	pthread_mutex_unlock(&g_lock);
+
+	return err;
+}
+
+/** Close the lights device */
+static int close_lights(struct light_device_t *dev)
+{
+	if (dev)
+		free(dev);
+	return 0;
+}
+
+/** 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)
+{
+	pthread_t lighting_poll_thread;
+
+	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
+		return -EINVAL;
+
+	pthread_mutex_init(&g_lock, NULL);
+
+	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_methods =
+{
+	.open =  open_lights,
+};
+
+/*
+ * The backlight 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 = "NVIDIA Kai lights module",
+	.author = "NVIDIA",
+	.methods = &lights_methods,
+};