liblights/lights.c - android_device_moto_stingray - Gitiles

 /*
  * 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.
  */

 #define LOG_TAG "lights"

 #include <cutils/log.h>

 #include <dirent.h>
 #include <stdint.h>
 #include <string.h>
 #include <unistd.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <pthread.h>

 #include <linux/input.h>

 #include <sys/ioctl.h>
 #include <sys/poll.h>
 #include <sys/types.h>

 #include <hardware/lights.h>

 #define	MANUAL		0
 #define	AUTOMATIC	1
 #define	MANUAL_SENSOR	2

 /******************************************************************************/


 static pthread_mutex_t g_lock = PTHREAD_MUTEX_INITIALIZER;
 static int batt_rgb_on = 0;
 static int batt_blink = 0;
 static int notification_rgb_on = 0;
 static int notification_blink = 0;
 static int attention_rgb_on = 0;
 static int attention_blink = 0;

 static int lcd_brightness_mode = -1;

 /**
  * device methods
  */

 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 void set_lcd_brightness_mode(int mode)
 {
 	if (lcd_brightness_mode != mode) {
 		write_int("/sys/class/leds/lcd-backlight/als",
 			(mode == BRIGHTNESS_MODE_SENSOR ? AUTOMATIC : MANUAL_SENSOR));
 		lcd_brightness_mode = mode;
     }
 }

 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);

 	pthread_mutex_lock(&g_lock);
 	set_lcd_brightness_mode(state->brightnessMode);
 	err = write_int("/sys/class/leds/lcd-backlight/brightness", brightness);
 	pthread_mutex_unlock(&g_lock);

 	return err;
 }

 static int
 set_light_keyboard(struct light_device_t *dev,
 		   struct light_state_t const *state)
 {
 	int err = 0;
 	int brightness = rgb_to_brightness(state);

 	pthread_mutex_lock(&g_lock);
 	err = write_int("/sys/class/leds/keyboard-backlight/brightness",
 		      brightness);
 	pthread_mutex_unlock(&g_lock);

 	return err;
 }

 static int
 set_light_buttons(struct light_device_t *dev, struct light_state_t const *state)
 {
 	int err = 0;
 	int brightness = rgb_to_brightness(state);

 	pthread_mutex_lock(&g_lock);
 	err = write_int("/sys/class/leds/button-backlight/brightness",
 		      brightness);
 	pthread_mutex_unlock(&g_lock);

 	return err;
 }

 static int
 set_attention_led(struct light_device_t *dev, struct light_state_t const *state)
 {
 	int len;
 	int red, green, blue;
 	int blink;
 	int onMS, offMS;
 	unsigned int colorRGB;

 	switch (state->flashMode) {
 	case LIGHT_FLASH_TIMED:
 		onMS = state->flashOnMS;
 		offMS = state->flashOffMS;
 		break;
 	case LIGHT_FLASH_NONE:
 	default:
 		onMS = 0;
 		offMS = 0;
 		break;
 	}

 	colorRGB = state->color;

 #if 0
 	LOGD("set_attention colorRGB=%08X, onMS=%d, offMS=%d\n",
 	     colorRGB, onMS, offMS);
 #endif

 	red = (colorRGB >> 16) & 0xFF;
 	green = (colorRGB >> 8) & 0xFF;
 	blue = colorRGB & 0xFF;

 	/* Ignore the SOL beacon */
 	if (red & green & blue)
 		return 0;

 	if (onMS > 0 && offMS > 0) {
 		blink = 1;
 		attention_blink = 1;
 	} else {
 		if (batt_blink || notification_blink) {
 			blink = 1;
 		}
 		else {
 			attention_blink = 0;
 			blink = 0;
 		}
 	}

 	if (red || green || blue) {
 		attention_rgb_on = colorRGB & 0x00ffffff;
 	} else  {
 		attention_rgb_on = 0x00;
 	}

 	if (attention_rgb_on == 0) {
 		if (batt_rgb_on) {
 			red = (batt_rgb_on >> 16) & 0xFF;
 			green = (batt_rgb_on >> 8) & 0xFF;
 			blue = batt_rgb_on & 0xFF;
 		} else if (notification_rgb_on) {
 			red = (notification_rgb_on >> 16) & 0xFF;
 			green = (notification_rgb_on >> 8) & 0xFF;
 			blue = notification_rgb_on & 0xFF;
 		}
 	} else if(batt_rgb_on) {
 		red = (batt_rgb_on >> 16) & 0xFF;
 		green = (batt_rgb_on >> 8) & 0xFF;
 		blue = batt_rgb_on & 0xFF;
 	}

 	pthread_mutex_lock(&g_lock);

 	write_int("/sys/class/leds/red/blink", blink);
 	write_int("/sys/class/leds/red/brightness", red);
 	write_int("/sys/class/leds/green/brightness", green);
 	write_int("/sys/class/leds/blue/brightness", blue);

 	pthread_mutex_unlock(&g_lock);

 	return 0;
 }

 static int
 set_msg_indicator(struct light_device_t *dev, struct light_state_t const *state)
 {
 	int len;
 	int red, green, blue;
 	int blink;
 	int onMS, offMS;
 	unsigned int colorRGB;

 	switch (state->flashMode) {
 	case LIGHT_FLASH_TIMED:
 		onMS = state->flashOnMS;
 		offMS = state->flashOffMS;
 		break;
 	case LIGHT_FLASH_NONE:
 	default:
 		onMS = 0;
 		offMS = 0;
 		break;
 	}

 	colorRGB = state->color;

 #if 0
 	LOGD("set_notification colorRGB=%08X, onMS=%d, offMS=%d\n",
 	     colorRGB, onMS, offMS);
 #endif

 	red = (colorRGB >> 16) & 0xFF;
 	green = (colorRGB >> 8) & 0xFF;
 	blue = colorRGB & 0xFF;

 	/* Ignore the SOL beacon */
 	if (red & green & blue)
 		return 0;

 	if (onMS > 0 && offMS > 0) {
 		blink = 1;
 		notification_blink = 1;

 	} else {
 		if (batt_blink || attention_blink) {
 			blink = 1;
 		} else {
 			notification_blink = 0;
 			blink = 0;
 		}
 	}

 	if (red || green || blue) {
 		notification_rgb_on = colorRGB & 0x00ffffff;
 	} else  {
 		notification_rgb_on = 0x00;
 	}

 	if (notification_rgb_on == 0) {
 		if (batt_rgb_on) {
 			red = (batt_rgb_on >> 16) & 0xFF;
 			green = (batt_rgb_on >> 8) & 0xFF;
 			blue = batt_rgb_on & 0xFF;
 		} else if (attention_rgb_on) {
 			red = (attention_rgb_on >> 16) & 0xFF;
 			green = (attention_rgb_on >> 8) & 0xFF;
 			blue = attention_rgb_on & 0xFF;
 		}
 	} else if(batt_rgb_on) {
 		red = (batt_rgb_on >> 16) & 0xFF;
 		green = (batt_rgb_on >> 8) & 0xFF;
 		blue = batt_rgb_on & 0xFF;
 	}

 	pthread_mutex_lock(&g_lock);
 	write_int("/sys/class/leds/red/blink", blink);
 	write_int("/sys/class/leds/red/brightness", red);
 	write_int("/sys/class/leds/green/brightness", green);
 	write_int("/sys/class/leds/blue/brightness", blue);

 	pthread_mutex_unlock(&g_lock);

 	return 0;
 }

 static int
 set_batt_indicator(struct light_device_t *dev, struct light_state_t const *state)
 {
 	int len;
 	int red, green, blue;
     int blink;
 	int onMS, offMS;
 	unsigned int colorRGB;

 	switch (state->flashMode) {
 	case LIGHT_FLASH_TIMED:
 		onMS = state->flashOnMS;
 		offMS = state->flashOffMS;
 		break;
 	case LIGHT_FLASH_NONE:
 	default:
 		onMS = 0;
 		offMS = 0;
 		break;
 	}

 	colorRGB = state->color;
 #if 0
 	LOGD("set_batt colorRGB=%08X, onMS=%d, offMS=%d\n",
 	     colorRGB, onMS, offMS);
 #endif

 	red = (colorRGB >> 16) & 0xFF;
 	green = (colorRGB >> 8) & 0xFF;
 	blue = colorRGB & 0xFF;

 	if (onMS > 0 && offMS > 0) {
 		batt_blink = 1;
 		blink = 1;
 	} else {
 		if (notification_blink || attention_blink) {
 			blink = 1;
 		} else {
 			batt_blink = 0;
 			blink = 0;
 		}
 	}

 	if (red) {
 		if (green) {
 			batt_rgb_on = 0x00;
 			red = 0x0;
 			green = 0x0;
 			blue = 0x0;
 		} else {
 			batt_rgb_on = colorRGB & 0x00ffffff;
 		}
 	} else {
 		batt_rgb_on = 0x00;
 		red = 0x0;
 		green = 0x0;
 		blue = 0x0;
 	}

 	if (batt_rgb_on == 0) {
 		if (notification_rgb_on) {
 			red = (notification_rgb_on >> 16) & 0xFF;
 			green = (notification_rgb_on >> 8) & 0xFF;
 			blue = notification_rgb_on & 0xFF;
 		} else if (attention_rgb_on) {
 			red = (attention_rgb_on >> 16) & 0xFF;
 			green = (attention_rgb_on >> 8) & 0xFF;
 			blue = attention_rgb_on & 0xFF;
 		}
 	}

 	pthread_mutex_lock(&g_lock);

 	write_int("/sys/class/leds/red/blink", blink);
 	write_int("/sys/class/leds/red/brightness", red);
 	write_int("/sys/class/leds/green/brightness", green);
 	write_int("/sys/class/leds/blue/brightness", blue);

 	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)
 {
 	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 if (0 == strcmp(LIGHT_ID_KEYBOARD, name))
 		set_light = set_light_keyboard;
 	else if (0 == strcmp(LIGHT_ID_BUTTONS, name))
 		set_light = set_light_buttons;
 	else if (0 == strcmp(LIGHT_ID_BATTERY, name))
 		set_light = set_batt_indicator;
 	else if (0 == strcmp(LIGHT_ID_NOTIFICATIONS, name))
 		set_light = set_msg_indicator;
 	else if (0 == strcmp(LIGHT_ID_ATTENTION, name))
 		set_light = set_attention_led;
 	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_module_methods = {
 	.open = open_lights,
 };

 /*
  * The lights Module
  */
 const 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 lights Module",
 	.author = "Motorola, Inc.",
 	.methods = &lights_module_methods,
 };
	/*
	* 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.
	*/

	#define LOG_TAG "lights"

	#include <cutils/log.h>

	#include <dirent.h>
	#include <stdint.h>
	#include <string.h>
	#include <unistd.h>
	#include <errno.h>
	#include <fcntl.h>
	#include <pthread.h>

	#include <linux/input.h>

	#include <sys/ioctl.h>
	#include <sys/poll.h>
	#include <sys/types.h>

	#include <hardware/lights.h>

	#define MANUAL 0
	#define AUTOMATIC 1
	#define MANUAL_SENSOR 2

	/******************************************************************************/


	static pthread_mutex_t g_lock = PTHREAD_MUTEX_INITIALIZER;
	static int batt_rgb_on = 0;
	static int batt_blink = 0;
	static int notification_rgb_on = 0;
	static int notification_blink = 0;
	static int attention_rgb_on = 0;
	static int attention_blink = 0;

	static int lcd_brightness_mode = -1;

	/**
	* device methods
	*/

	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 void set_lcd_brightness_mode(int mode)
	{
	if (lcd_brightness_mode != mode) {
	write_int("/sys/class/leds/lcd-backlight/als",
	(mode == BRIGHTNESS_MODE_SENSOR ? AUTOMATIC : MANUAL_SENSOR));
	lcd_brightness_mode = mode;
	}
	}

	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);

	pthread_mutex_lock(&g_lock);
	set_lcd_brightness_mode(state->brightnessMode);
	err = write_int("/sys/class/leds/lcd-backlight/brightness", brightness);
	pthread_mutex_unlock(&g_lock);

	return err;
	}

	static int
	set_light_keyboard(struct light_device_t *dev,
	struct light_state_t const *state)
	{
	int err = 0;
	int brightness = rgb_to_brightness(state);

	pthread_mutex_lock(&g_lock);
	err = write_int("/sys/class/leds/keyboard-backlight/brightness",
	brightness);
	pthread_mutex_unlock(&g_lock);

	return err;
	}

	static int
	set_light_buttons(struct light_device_t dev, struct light_state_t const state)
	{
	int err = 0;
	int brightness = rgb_to_brightness(state);

	pthread_mutex_lock(&g_lock);
	err = write_int("/sys/class/leds/button-backlight/brightness",
	brightness);
	pthread_mutex_unlock(&g_lock);

	return err;
	}

	static int
	set_attention_led(struct light_device_t dev, struct light_state_t const state)
	{
	int len;
	int red, green, blue;
	int blink;
	int onMS, offMS;
	unsigned int colorRGB;

	switch (state->flashMode) {
	case LIGHT_FLASH_TIMED:
	onMS = state->flashOnMS;
	offMS = state->flashOffMS;
	break;
	case LIGHT_FLASH_NONE:
	default:
	onMS = 0;
	offMS = 0;
	break;
	}

	colorRGB = state->color;

	#if 0
	LOGD("set_attention colorRGB=%08X, onMS=%d, offMS=%d\n",
	colorRGB, onMS, offMS);
	#endif

	red = (colorRGB >> 16) & 0xFF;
	green = (colorRGB >> 8) & 0xFF;
	blue = colorRGB & 0xFF;

	/* Ignore the SOL beacon */
	if (red & green & blue)
	return 0;

	if (onMS > 0 && offMS > 0) {
	blink = 1;
	attention_blink = 1;
	} else {
	if (batt_blink \|\| notification_blink) {
	blink = 1;
	}
	else {
	attention_blink = 0;
	blink = 0;
	}
	}

	if (red \|\| green \|\| blue) {
	attention_rgb_on = colorRGB & 0x00ffffff;
	} else {
	attention_rgb_on = 0x00;
	}

	if (attention_rgb_on == 0) {
	if (batt_rgb_on) {
	red = (batt_rgb_on >> 16) & 0xFF;
	green = (batt_rgb_on >> 8) & 0xFF;
	blue = batt_rgb_on & 0xFF;
	} else if (notification_rgb_on) {
	red = (notification_rgb_on >> 16) & 0xFF;
	green = (notification_rgb_on >> 8) & 0xFF;
	blue = notification_rgb_on & 0xFF;
	}
	} else if(batt_rgb_on) {
	red = (batt_rgb_on >> 16) & 0xFF;
	green = (batt_rgb_on >> 8) & 0xFF;
	blue = batt_rgb_on & 0xFF;
	}

	pthread_mutex_lock(&g_lock);

	write_int("/sys/class/leds/red/blink", blink);
	write_int("/sys/class/leds/red/brightness", red);
	write_int("/sys/class/leds/green/brightness", green);
	write_int("/sys/class/leds/blue/brightness", blue);

	pthread_mutex_unlock(&g_lock);

	return 0;
	}

	static int
	set_msg_indicator(struct light_device_t dev, struct light_state_t const state)
	{
	int len;
	int red, green, blue;
	int blink;
	int onMS, offMS;
	unsigned int colorRGB;

	switch (state->flashMode) {
	case LIGHT_FLASH_TIMED:
	onMS = state->flashOnMS;
	offMS = state->flashOffMS;
	break;
	case LIGHT_FLASH_NONE:
	default:
	onMS = 0;
	offMS = 0;
	break;
	}

	colorRGB = state->color;

	#if 0
	LOGD("set_notification colorRGB=%08X, onMS=%d, offMS=%d\n",
	colorRGB, onMS, offMS);
	#endif

	red = (colorRGB >> 16) & 0xFF;
	green = (colorRGB >> 8) & 0xFF;
	blue = colorRGB & 0xFF;

	/* Ignore the SOL beacon */
	if (red & green & blue)
	return 0;

	if (onMS > 0 && offMS > 0) {
	blink = 1;
	notification_blink = 1;

	} else {
	if (batt_blink \|\| attention_blink) {
	blink = 1;
	} else {
	notification_blink = 0;
	blink = 0;
	}
	}

	if (red \|\| green \|\| blue) {
	notification_rgb_on = colorRGB & 0x00ffffff;
	} else {
	notification_rgb_on = 0x00;
	}

	if (notification_rgb_on == 0) {
	if (batt_rgb_on) {
	red = (batt_rgb_on >> 16) & 0xFF;
	green = (batt_rgb_on >> 8) & 0xFF;
	blue = batt_rgb_on & 0xFF;
	} else if (attention_rgb_on) {
	red = (attention_rgb_on >> 16) & 0xFF;
	green = (attention_rgb_on >> 8) & 0xFF;
	blue = attention_rgb_on & 0xFF;
	}
	} else if(batt_rgb_on) {
	red = (batt_rgb_on >> 16) & 0xFF;
	green = (batt_rgb_on >> 8) & 0xFF;
	blue = batt_rgb_on & 0xFF;
	}

	pthread_mutex_lock(&g_lock);
	write_int("/sys/class/leds/red/blink", blink);
	write_int("/sys/class/leds/red/brightness", red);
	write_int("/sys/class/leds/green/brightness", green);
	write_int("/sys/class/leds/blue/brightness", blue);

	pthread_mutex_unlock(&g_lock);

	return 0;
	}

	static int
	set_batt_indicator(struct light_device_t dev, struct light_state_t const state)
	{
	int len;
	int red, green, blue;
	int blink;
	int onMS, offMS;
	unsigned int colorRGB;

	switch (state->flashMode) {
	case LIGHT_FLASH_TIMED:
	onMS = state->flashOnMS;
	offMS = state->flashOffMS;
	break;
	case LIGHT_FLASH_NONE:
	default:
	onMS = 0;
	offMS = 0;
	break;
	}

	colorRGB = state->color;
	#if 0
	LOGD("set_batt colorRGB=%08X, onMS=%d, offMS=%d\n",
	colorRGB, onMS, offMS);
	#endif

	red = (colorRGB >> 16) & 0xFF;
	green = (colorRGB >> 8) & 0xFF;
	blue = colorRGB & 0xFF;

	if (onMS > 0 && offMS > 0) {
	batt_blink = 1;
	blink = 1;
	} else {
	if (notification_blink \|\| attention_blink) {
	blink = 1;
	} else {
	batt_blink = 0;
	blink = 0;
	}
	}

	if (red) {
	if (green) {
	batt_rgb_on = 0x00;
	red = 0x0;
	green = 0x0;
	blue = 0x0;
	} else {
	batt_rgb_on = colorRGB & 0x00ffffff;
	}
	} else {
	batt_rgb_on = 0x00;
	red = 0x0;
	green = 0x0;
	blue = 0x0;
	}

	if (batt_rgb_on == 0) {
	if (notification_rgb_on) {
	red = (notification_rgb_on >> 16) & 0xFF;
	green = (notification_rgb_on >> 8) & 0xFF;
	blue = notification_rgb_on & 0xFF;
	} else if (attention_rgb_on) {
	red = (attention_rgb_on >> 16) & 0xFF;
	green = (attention_rgb_on >> 8) & 0xFF;
	blue = attention_rgb_on & 0xFF;
	}
	}

	pthread_mutex_lock(&g_lock);

	write_int("/sys/class/leds/red/blink", blink);
	write_int("/sys/class/leds/red/brightness", red);
	write_int("/sys/class/leds/green/brightness", green);
	write_int("/sys/class/leds/blue/brightness", blue);

	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)
	{
	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 if (0 == strcmp(LIGHT_ID_KEYBOARD, name))
	set_light = set_light_keyboard;
	else if (0 == strcmp(LIGHT_ID_BUTTONS, name))
	set_light = set_light_buttons;
	else if (0 == strcmp(LIGHT_ID_BATTERY, name))
	set_light = set_batt_indicator;
	else if (0 == strcmp(LIGHT_ID_NOTIFICATIONS, name))
	set_light = set_msg_indicator;
	else if (0 == strcmp(LIGHT_ID_ATTENTION, name))
	set_light = set_attention_led;
	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_module_methods = {
	.open = open_lights,
	};

	/*
	* The lights Module
	*/
	const 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 lights Module",
	.author = "Motorola, Inc.",
	.methods = &lights_module_methods,
	};