107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani/*
2d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema * Copyright (C) 2014, 2017 The  Linux Foundation. All rights reserved.
3d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema * Not a contribution
407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani * Copyright (C) 2008 The Android Open Source Project
507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani *
607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani * Licensed under the Apache License, Version 2.0 (the "License");
707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani * you may not use this file except in compliance with the License.
807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani * You may obtain a copy of the License at
907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani *
1007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani *      http://www.apache.org/licenses/LICENSE-2.0
1107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani *
1207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani * Unless required by applicable law or agreed to in writing, software
1307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani * distributed under the License is distributed on an "AS IS" BASIS,
1407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
1507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani * See the License for the specific language governing permissions and
1607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani * limitations under the License.
1707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani */
1807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
1907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
2007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani// #define LOG_NDEBUG 0
2107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
22d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema#include <log/log.h>
23d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema#include <cutils/properties.h>
2407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani#include <stdint.h>
2507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani#include <stdlib.h>
2607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani#include <string.h>
2707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani#include <unistd.h>
2807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani#include <errno.h>
2907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani#include <fcntl.h>
3007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani#include <pthread.h>
3107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
3207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani#include <sys/ioctl.h>
3307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani#include <sys/types.h>
3407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
3507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani#include <hardware/lights.h>
36d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema#include "lights_prv.h"
37d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema
38d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema#ifndef DEFAULT_LOW_PERSISTENCE_MODE_BRIGHTNESS
39d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema#define DEFAULT_LOW_PERSISTENCE_MODE_BRIGHTNESS 0x80
40d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema#endif
4107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
4207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani/******************************************************************************/
4307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
4407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic pthread_once_t g_init = PTHREAD_ONCE_INIT;
4507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic pthread_mutex_t g_lock = PTHREAD_MUTEX_INITIALIZER;
4607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic struct light_state_t g_notification;
4707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic struct light_state_t g_battery;
48d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennemastatic int g_last_backlight_mode = BRIGHTNESS_MODE_USER;
4907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic int g_attention = 0;
50d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennemastatic int g_brightness_max = 0;
5107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
5207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanichar const*const RED_LED_FILE
5307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        = "/sys/class/leds/red/brightness";
5407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
5507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanichar const*const GREEN_LED_FILE
5607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        = "/sys/class/leds/green/brightness";
5707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
5807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanichar const*const BLUE_LED_FILE
5907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        = "/sys/class/leds/blue/brightness";
6007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
6107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanichar const*const LCD_FILE
6207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        = "/sys/class/leds/lcd-backlight/brightness";
6307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
64d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennemachar const*const LCD_FILE2
65d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        = "/sys/class/backlight/panel0-backlight/brightness";
66d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema
6707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanichar const*const BUTTON_FILE
6807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        = "/sys/class/leds/button-backlight/brightness";
6907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
7007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanichar const*const RED_BLINK_FILE
7107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        = "/sys/class/leds/red/blink";
7207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
7307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanichar const*const GREEN_BLINK_FILE
7407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        = "/sys/class/leds/green/blink";
7507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
7607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanichar const*const BLUE_BLINK_FILE
7707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        = "/sys/class/leds/blue/blink";
7807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
79d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennemachar const*const PERSISTENCE_FILE
80d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        = "/sys/class/graphics/fb0/msm_fb_persist_mode";
81d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema
8207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani/**
8307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani * device methods
8407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani */
8507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
8607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanivoid init_globals(void)
8707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani{
8807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    // init the mutex
8907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    pthread_mutex_init(&g_lock, NULL);
9007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani}
9107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
9207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic int
9307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malaniwrite_int(char const* path, int value)
9407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani{
9507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    int fd;
9607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    static int already_warned = 0;
9707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
9807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    fd = open(path, O_RDWR);
9907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    if (fd >= 0) {
10007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        char buffer[20];
10107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        int bytes = snprintf(buffer, sizeof(buffer), "%d\n", value);
10207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        ssize_t amt = write(fd, buffer, (size_t)bytes);
10307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        close(fd);
10407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        return amt == -1 ? -errno : 0;
10507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    } else {
10607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        if (already_warned == 0) {
10707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani            ALOGE("write_int failed to open %s\n", path);
10807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani            already_warned = 1;
10907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        }
11007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        return -errno;
11107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    }
11207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani}
11307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
11407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic int
11507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malaniis_lit(struct light_state_t const* state)
11607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani{
11707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    return state->color & 0x00ffffff;
11807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani}
11907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
12007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic int
12107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanirgb_to_brightness(struct light_state_t const* state)
12207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani{
12307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    int color = state->color & 0x00ffffff;
12407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    return ((77*((color>>16)&0x00ff))
12507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani            + (150*((color>>8)&0x00ff)) + (29*(color&0x00ff))) >> 8;
12607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani}
12707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
12807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic int
12907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malaniset_light_backlight(struct light_device_t* dev,
13007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        struct light_state_t const* state)
13107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani{
13207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    int err = 0;
13307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    int brightness = rgb_to_brightness(state);
134d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    unsigned int lpEnabled =
135d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        state->brightnessMode == BRIGHTNESS_MODE_LOW_PERSISTENCE;
136d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    if(!dev) {
137d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        return -1;
138d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    }
139d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema
140d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    pthread_mutex_lock(&g_lock);
141d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    // Toggle low persistence mode state
142d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    if ((g_last_backlight_mode != state->brightnessMode && lpEnabled) ||
143d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        (!lpEnabled &&
144d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema         g_last_backlight_mode == BRIGHTNESS_MODE_LOW_PERSISTENCE)) {
145d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        if ((err = write_int(PERSISTENCE_FILE, lpEnabled)) != 0) {
146d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema            ALOGE("%s: Failed to write to %s: %s\n", __FUNCTION__,
147d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema                   PERSISTENCE_FILE, strerror(errno));
148d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        }
149d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        if (lpEnabled != 0) {
150d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema            brightness = DEFAULT_LOW_PERSISTENCE_MODE_BRIGHTNESS;
151d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        }
152d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    }
153d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema
154d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    g_last_backlight_mode = state->brightnessMode;
155d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema
156d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    if (!err) {
157d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        if (!access(LCD_FILE, F_OK)) {
158d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema            err = write_int(LCD_FILE, brightness);
159d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        } else {
160d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema            err = write_int(LCD_FILE2, brightness);
161d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        }
162d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    }
163d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema
164d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    pthread_mutex_unlock(&g_lock);
165d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    return err;
166d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema}
167d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema
168d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennemastatic int
169d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennemaset_light_backlight_ext(struct light_device_t* dev,
170d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        struct light_state_t const* state)
171d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema{
172d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    int err = 0;
173d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema
17407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    if(!dev) {
17507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        return -1;
17607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    }
177d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema
178d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    int brightness = state->color & 0x00ffffff;
17907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    pthread_mutex_lock(&g_lock);
180d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema
181d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    if (brightness >= 0 && brightness <= g_brightness_max) {
182d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        set_brightness_ext_level(brightness);
183d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    }
184d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema
18507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    pthread_mutex_unlock(&g_lock);
186d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema
18707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    return err;
18807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani}
18907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
19007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic int
19107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malaniset_speaker_light_locked(struct light_device_t* dev,
19207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        struct light_state_t const* state)
19307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani{
19407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    int red, green, blue;
19507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    int blink;
19607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    int onMS, offMS;
19707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    unsigned int colorRGB;
19807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
19907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    if(!dev) {
20007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        return -1;
20107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    }
20207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
20307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    switch (state->flashMode) {
20407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        case LIGHT_FLASH_TIMED:
20507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani            onMS = state->flashOnMS;
20607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani            offMS = state->flashOffMS;
20707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani            break;
20807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        case LIGHT_FLASH_NONE:
20907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        default:
21007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani            onMS = 0;
21107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani            offMS = 0;
21207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani            break;
21307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    }
21407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
21507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    colorRGB = state->color;
21607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
21707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani#if 0
21807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    ALOGD("set_speaker_light_locked mode %d, colorRGB=%08X, onMS=%d, offMS=%d\n",
21907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani            state->flashMode, colorRGB, onMS, offMS);
22007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani#endif
22107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
22207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    red = (colorRGB >> 16) & 0xFF;
22307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    green = (colorRGB >> 8) & 0xFF;
22407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    blue = colorRGB & 0xFF;
22507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
22607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    if (onMS > 0 && offMS > 0) {
22707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        /*
22807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani         * if ON time == OFF time
22907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani         *   use blink mode 2
23007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani         * else
23107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani         *   use blink mode 1
23207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani         */
23307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        if (onMS == offMS)
23407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani            blink = 2;
23507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        else
23607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani            blink = 1;
23707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    } else {
23807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        blink = 0;
23907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    }
24007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
24107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    if (blink) {
24207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        if (red) {
24307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani            if (write_int(RED_BLINK_FILE, blink))
24407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani                write_int(RED_LED_FILE, 0);
245d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    }
24607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        if (green) {
24707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani            if (write_int(GREEN_BLINK_FILE, blink))
24807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani                write_int(GREEN_LED_FILE, 0);
249d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    }
25007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        if (blue) {
25107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani            if (write_int(BLUE_BLINK_FILE, blink))
25207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani                write_int(BLUE_LED_FILE, 0);
253d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    }
25407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    } else {
25507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        write_int(RED_LED_FILE, red);
25607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        write_int(GREEN_LED_FILE, green);
25707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        write_int(BLUE_LED_FILE, blue);
25807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    }
25907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
26007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    return 0;
26107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani}
26207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
26307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic void
26407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanihandle_speaker_battery_locked(struct light_device_t* dev)
26507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani{
26607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    if (is_lit(&g_battery)) {
26707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        set_speaker_light_locked(dev, &g_battery);
26807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    } else {
26907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        set_speaker_light_locked(dev, &g_notification);
27007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    }
27107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani}
27207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
27307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic int
27407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malaniset_light_battery(struct light_device_t* dev,
27507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        struct light_state_t const* state)
27607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani{
27707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    pthread_mutex_lock(&g_lock);
27807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    g_battery = *state;
27907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    handle_speaker_battery_locked(dev);
28007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    pthread_mutex_unlock(&g_lock);
28107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    return 0;
28207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani}
28307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
28407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic int
28507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malaniset_light_notifications(struct light_device_t* dev,
28607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        struct light_state_t const* state)
28707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani{
28807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    pthread_mutex_lock(&g_lock);
28907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    g_notification = *state;
29007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    handle_speaker_battery_locked(dev);
29107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    pthread_mutex_unlock(&g_lock);
29207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    return 0;
29307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani}
29407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
29507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic int
29607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malaniset_light_attention(struct light_device_t* dev,
29707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        struct light_state_t const* state)
29807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani{
29907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    pthread_mutex_lock(&g_lock);
30007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    if (state->flashMode == LIGHT_FLASH_HARDWARE) {
30107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        g_attention = state->flashOnMS;
30207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    } else if (state->flashMode == LIGHT_FLASH_NONE) {
30307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        g_attention = 0;
30407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    }
30507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    handle_speaker_battery_locked(dev);
30607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    pthread_mutex_unlock(&g_lock);
30707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    return 0;
30807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani}
30907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
31007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic int
31107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malaniset_light_buttons(struct light_device_t* dev,
31207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        struct light_state_t const* state)
31307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani{
31407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    int err = 0;
31507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    if(!dev) {
31607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        return -1;
31707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    }
31807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    pthread_mutex_lock(&g_lock);
31907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    err = write_int(BUTTON_FILE, state->color & 0xFF);
32007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    pthread_mutex_unlock(&g_lock);
32107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    return err;
32207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani}
32307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
32407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani/** Close the lights device */
32507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic int
32607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malaniclose_lights(struct light_device_t *dev)
32707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani{
32807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    if (dev) {
32907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        free(dev);
33007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    }
33107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    return 0;
33207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani}
33307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
33407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
33507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani/******************************************************************************/
33607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
33707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani/**
33807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani * module methods
33907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani */
34007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
34107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani/** Open a new instance of a lights device using name */
34207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic int open_lights(const struct hw_module_t* module, char const* name,
34307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        struct hw_device_t** device)
34407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani{
34507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    int (*set_light)(struct light_device_t* dev,
34607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani            struct light_state_t const* state);
34707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
348d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    if (0 == strcmp(LIGHT_ID_BACKLIGHT, name)) {
349d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        char property[PROPERTY_VALUE_MAX];
350d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        property_get("persist.extend.brightness", property, "0");
351d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema
352d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        if(!(strncmp(property, "1", PROPERTY_VALUE_MAX)) ||
353d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema           !(strncmp(property, "true", PROPERTY_VALUE_MAX))) {
354d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema            property_get("persist.display.max_brightness", property, "255");
355d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema            g_brightness_max = atoi(property);
356d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema            set_brightness_ext_init();
357d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema            set_light = set_light_backlight_ext;
358d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        } else
359d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema            set_light = set_light_backlight;
360d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    } else if (0 == strcmp(LIGHT_ID_BATTERY, name))
36107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        set_light = set_light_battery;
36207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    else if (0 == strcmp(LIGHT_ID_NOTIFICATIONS, name))
36307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        set_light = set_light_notifications;
364d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    else if (0 == strcmp(LIGHT_ID_BUTTONS, name)) {
365d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        if (!access(BUTTON_FILE, F_OK)) {
366d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema          // enable light button when the file is present
367d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema          set_light = set_light_buttons;
368d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        } else {
369d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema          return -EINVAL;
370d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema        }
371d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    }
37207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    else if (0 == strcmp(LIGHT_ID_ATTENTION, name))
37307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        set_light = set_light_attention;
37407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    else
37507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        return -EINVAL;
37607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
37707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    pthread_once(&g_init, init_globals);
37807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
37907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    struct light_device_t *dev = malloc(sizeof(struct light_device_t));
38007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
38107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    if(!dev)
38207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani        return -ENOMEM;
38307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
38407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    memset(dev, 0, sizeof(*dev));
38507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
38607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    dev->common.tag = HARDWARE_DEVICE_TAG;
387d39a514dd0540cf47e121775a77e9ac1b578bdb1Ben Fennema    dev->common.version = LIGHTS_DEVICE_API_VERSION_2_0;
38807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    dev->common.module = (struct hw_module_t*)module;
38907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    dev->common.close = (int (*)(struct hw_device_t*))close_lights;
39007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    dev->set_light = set_light;
39107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
39207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    *device = (struct hw_device_t*)dev;
39307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    return 0;
39407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani}
39507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
39607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistatic struct hw_module_methods_t lights_module_methods = {
39707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    .open =  open_lights,
39807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani};
39907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani
40007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani/*
40107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani * The lights Module
40207bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani */
40307bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malanistruct hw_module_t HAL_MODULE_INFO_SYM = {
40407bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    .tag = HARDWARE_MODULE_TAG,
40507bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    .version_major = 1,
40607bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    .version_minor = 0,
40707bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    .id = LIGHTS_HARDWARE_MODULE_ID,
40807bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    .name = "lights Module",
40907bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    .author = "Google, Inc.",
41007bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani    .methods = &lights_module_methods,
41107bbf1e89c031a5d41a7561433e832d396c311a5Prashant Malani};
412