diff --git a/liblights/Android.mk b/liblights/Android.mk new file mode 100644 index 0000000..6529f4a --- /dev/null +++ b/liblights/Android.mk @@ -0,0 +1,32 @@ +# 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, not prelinked and stored in +# hw/..so +include $(CLEAR_VARS) + +LOCAL_SRC_FILES := lights.c +LOCAL_MULTILIB := both + +LOCAL_MODULE_TAGS := optional +LOCAL_PRELINK_MODULE := false +LOCAL_MODULE_RELATIVE_PATH := hw + +LOCAL_SHARED_LIBRARIES := liblog + +LOCAL_MODULE := lights.$(TARGET_BOARD_PLATFORM) + +include $(BUILD_SHARED_LIBRARY) diff --git a/liblights/lights.c b/liblights/lights.c new file mode 100644 index 0000000..d7b819e --- /dev/null +++ b/liblights/lights.c @@ -0,0 +1,316 @@ +/* + * Copyright (C) 2016 The M.A.D. Team + * + * 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 + +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include + +/******************************************************************************/ + +static pthread_once_t g_init = PTHREAD_ONCE_INIT; +static pthread_mutex_t g_lock = PTHREAD_MUTEX_INITIALIZER; +static struct light_state_t g_attention; +static struct light_state_t g_notification; +static struct light_state_t g_battery; + +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 BUTTONS_FILE + = "/sys/class/leds/button-backlight/brightness"; + +/** + * device methods + */ + +void init_globals(void) +{ + // init the mutex + pthread_mutex_init(&g_lock, NULL); +} + +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 = snprintf(buffer, sizeof(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) +{ + if (!dev) { + return -1; + } + int err = 0; + int brightness = rgb_to_brightness(state); + pthread_mutex_lock(&g_lock); + err = write_int(LCD_FILE, brightness); + pthread_mutex_unlock(&g_lock); + return err; +} + +static int +set_light_buttons(struct light_device_t* dev, + struct light_state_t const* state) +{ + if (!dev) { + return -1; + } + int err = 0; + int on = is_lit(state); + pthread_mutex_lock(&g_lock); + err = write_int(BUTTONS_FILE, on ? 255 : 0); + pthread_mutex_unlock(&g_lock); + return err; +} + +static int +set_speaker_light_locked(struct light_device_t* dev, + struct light_state_t const* state) +{ + int red, green, blue, blink; + int onMS, offMS; + unsigned int colorRGB; + + if (!dev) { + return -1; + } + + 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; + + ALOGV("set_speaker_light_locked mode %d, colorRGB=%08X, onMS=%d, offMS=%d\n", + state->flashMode, colorRGB, onMS, offMS); + + red = (colorRGB >> 16) & 0xFF; + green = (colorRGB >> 8) & 0xFF; + blue = colorRGB & 0xFF; + blink = onMS > 0 && offMS > 0; + + write_int(RED_LED_FILE, 0); + write_int(GREEN_LED_FILE, 0); + write_int(BLUE_LED_FILE, 0); + + if (blink) { + if (red >= 128) { + write_int(RED_LED_FILE, 128); + } + if (green >= 128) { + write_int(GREEN_LED_FILE, 128); + } + if (blue >= 128) { + write_int(BLUE_LED_FILE, 128); + } + } + else { + if (red >= 128) { + write_int(RED_LED_FILE, 255); + } + if (green >= 128) { + write_int(GREEN_LED_FILE, 255); + } + if (blue >= 128) { + write_int(BLUE_LED_FILE, 255); + } + } + + return 0; +} + +static void +handle_speaker_light_locked(struct light_device_t* dev) +{ + if (is_lit(&g_attention)) { + set_speaker_light_locked(dev, &g_attention); + } else if (is_lit(&g_notification)) { + set_speaker_light_locked(dev, &g_notification); + } else { + set_speaker_light_locked(dev, &g_battery); + } +} + +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_light_locked(dev); + pthread_mutex_unlock(&g_lock); + return 0; +} + +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_light_locked(dev); + pthread_mutex_unlock(&g_lock); + return 0; +} + +static int +set_light_attention(struct light_device_t* dev, + struct light_state_t const* state) +{ + pthread_mutex_lock(&g_lock); + g_attention = *state; + handle_speaker_light_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_BUTTONS, name)) + set_light = set_light_buttons; + else if (0 == strcmp(LIGHT_ID_BATTERY, name)) + set_light = set_light_battery; + else if (0 == strcmp(LIGHT_ID_NOTIFICATIONS, name)) + set_light = set_light_notifications; + else if (0 == strcmp(LIGHT_ID_ATTENTION, name)) + set_light = set_light_attention; + else + return -EINVAL; + + pthread_once(&g_init, init_globals); + + struct light_device_t *dev = malloc(sizeof(struct light_device_t)); + + if (!dev) + return -ENOMEM; + + 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 = "M.A.D. Lights Module", + .author = "M.A.D. Team", + .methods = &lights_module_methods, +}; diff --git a/mt8127-common.mk b/mt8127-common.mk index 514492b..9e69cd0 100644 --- a/mt8127-common.mk +++ b/mt8127-common.mk @@ -57,6 +57,10 @@ PRODUCT_PACKAGES += \ PRODUCT_PACKAGES += \ bluetooth.default +# Lights +PRODUCT_PACKAGES += \ + lights.mt8127 + # Power PRODUCT_PACKAGES += \ power.default