sm8250-common: Import liblight
* From c7c6e7e9f5
Change-Id: I49486fcb33414625753b71fed04c8b906e0bffc9
This commit is contained in:
parent
795d99ed80
commit
e3463cc2d7
@ -89,6 +89,9 @@ TARGET_KERNEL_ARCH := arm64
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TARGET_KERNEL_CLANG_COMPILE := true
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TARGET_KERNEL_SOURCE := kernel/xiaomi/sm8250
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# Lights
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TARGET_PROVIDES_LIBLIGHT := true
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# Partitions
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BOARD_BOOTIMAGE_PARTITION_SIZE := 134217728
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BOARD_CACHEIMAGE_PARTITION_SIZE := 402653184
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33
liblight/Android.mk
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33
liblight/Android.mk
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@ -0,0 +1,33 @@
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# Copyright (C) 2008 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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LOCAL_PATH:= $(call my-dir)
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# HAL module implemenation stored in
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# hw/<COPYPIX_HARDWARE_MODULE_ID>.<ro.board.platform>.so
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include $(CLEAR_VARS)
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LOCAL_SRC_FILES := lights.c
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LOCAL_MODULE_RELATIVE_PATH := hw
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LOCAL_HEADER_LIBRARIES := libhardware_headers
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LOCAL_SHARED_LIBRARIES := liblog
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LOCAL_CFLAGS := -DLOG_TAG=\"qdlights\"
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ifeq ($(LLVM_SA), true)
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LOCAL_CFLAGS += --compile-and-analyze --analyzer-perf --analyzer-Werror
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endif
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LOCAL_CLANG := true
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LOCAL_MODULE := lights.$(TARGET_BOARD_PLATFORM)
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LOCAL_MODULE_TAGS := optional
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LOCAL_VENDOR_MODULE := true
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include $(BUILD_SHARED_LIBRARY)
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415
liblight/lights.c
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415
liblight/lights.c
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@ -0,0 +1,415 @@
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/*
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* Copyright (C) 2014, 2017-2018 The Linux Foundation. All rights reserved.
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* Not a contribution
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// #define LOG_NDEBUG 0
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#include <log/log.h>
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#include <cutils/properties.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <pthread.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <hardware/lights.h>
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#ifndef DEFAULT_LOW_PERSISTENCE_MODE_BRIGHTNESS
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#define DEFAULT_LOW_PERSISTENCE_MODE_BRIGHTNESS 0x80
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#endif
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/******************************************************************************/
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static pthread_once_t g_init = PTHREAD_ONCE_INIT;
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static pthread_mutex_t g_lock = PTHREAD_MUTEX_INITIALIZER;
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static struct light_state_t g_notification;
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static struct light_state_t g_battery;
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static int g_last_backlight_mode = BRIGHTNESS_MODE_USER;
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static int g_attention = 0;
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static bool g_has_persistence_node = false;
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char const*const LCD_FILE
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= "/sys/class/leds/lcd-backlight/brightness";
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char const*const LCD_FILE2
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= "/sys/class/backlight/panel0-backlight/brightness";
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char const*const BUTTON_FILE
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= "/sys/class/leds/button-backlight/brightness";
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char const*const PERSISTENCE_FILE
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= "/sys/class/graphics/fb0/msm_fb_persist_mode";
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enum rgb_led {
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LED_RED = 0,
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LED_GREEN,
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LED_BLUE,
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};
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char *led_names[] = {
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"red",
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"green",
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"blue",
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};
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/**
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* device methods
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*/
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void init_globals(void)
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{
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// init the mutex
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pthread_mutex_init(&g_lock, NULL);
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}
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static int write_int(char const* path, int value)
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{
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int fd;
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static int already_warned = 0;
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fd = open(path, O_RDWR);
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if (fd >= 0) {
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char buffer[20];
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int bytes = snprintf(buffer, sizeof(buffer), "%d\n", value);
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ssize_t amt = write(fd, buffer, (size_t)bytes);
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close(fd);
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return amt == -1 ? -errno : 0;
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} else {
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if (already_warned == 0) {
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ALOGE("write_int failed to open %s, errno = %d\n", path, errno);
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already_warned = 1;
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}
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return -errno;
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}
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}
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static bool file_exists(const char *file)
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{
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int fd;
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fd = open(file, O_RDWR);
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if (fd < 0) {
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ALOGE("failed to open %s, errno=%d\n", file, errno);
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return false;
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}
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close(fd);
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return true;
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}
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static int
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is_lit(struct light_state_t const* state)
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{
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return state->color & 0x00ffffff;
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}
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static int
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rgb_to_brightness(struct light_state_t const* state)
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{
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int color = state->color & 0x00ffffff;
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return ((77*((color>>16)&0x00ff))
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+ (150*((color>>8)&0x00ff)) + (29*(color&0x00ff))) >> 8;
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}
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static int
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set_light_backlight(struct light_device_t* dev,
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struct light_state_t const* state)
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{
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int err = 0;
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int brightness = rgb_to_brightness(state);
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unsigned int lpEnabled =
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state->brightnessMode == BRIGHTNESS_MODE_LOW_PERSISTENCE;
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if(!dev) {
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return -1;
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}
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pthread_mutex_lock(&g_lock);
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// Toggle low persistence mode state
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bool persistence_mode = ((g_last_backlight_mode != state->brightnessMode && lpEnabled) ||
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(!lpEnabled &&
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g_last_backlight_mode == BRIGHTNESS_MODE_LOW_PERSISTENCE));
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bool cannot_handle_persistence = !g_has_persistence_node && persistence_mode;
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if (g_has_persistence_node) {
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if (persistence_mode) {
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if ((err = write_int(PERSISTENCE_FILE, lpEnabled)) != 0) {
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ALOGE("%s: Failed to write to %s: %s\n", __FUNCTION__,
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PERSISTENCE_FILE, strerror(errno));
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}
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if (lpEnabled != 0) {
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brightness = DEFAULT_LOW_PERSISTENCE_MODE_BRIGHTNESS;
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}
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}
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g_last_backlight_mode = state->brightnessMode;
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}
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if (!err) {
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if (!access(LCD_FILE, F_OK)) {
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err = write_int(LCD_FILE, brightness);
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} else {
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err = write_int(LCD_FILE2, brightness);
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}
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}
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pthread_mutex_unlock(&g_lock);
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return cannot_handle_persistence ? -ENOSYS : err;
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}
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static int set_rgb_led_brightness(enum rgb_led led, int brightness)
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{
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char file[48];
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snprintf(file, sizeof(file), "/sys/class/leds/%s/brightness", led_names[led]);
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return write_int(file, brightness);
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}
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static int set_rgb_led_timer_trigger(enum rgb_led led, int onMS, int offMS)
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{
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char file[48];
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int rc;
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snprintf(file, sizeof(file), "/sys/class/leds/%s/delay_off", led_names[led]);
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rc = write_int(file, offMS);
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if (rc < 0)
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goto out;
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snprintf(file, sizeof(file), "/sys/class/leds/%s/delay_on", led_names[led]);
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rc = write_int(file, onMS);
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if (rc < 0)
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goto out;
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return 0;
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out:
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ALOGD("%s doesn't support timer trigger\n", led_names[led]);
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return rc;
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}
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static int set_rgb_led_hw_blink(enum rgb_led led, int blink)
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{
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char file[48];
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snprintf(file, sizeof(file), "/sys/class/leds/%s/breath", led_names[led]);
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if (!file_exists(file))
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snprintf(file, sizeof(file), "/sys/class/leds/%s/blink", led_names[led]);
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return write_int(file, blink);
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}
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static int
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set_speaker_light_locked(struct light_device_t* dev,
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struct light_state_t const* state)
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{
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int red, green, blue;
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int onMS, offMS;
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unsigned int colorRGB;
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int blink = 0;
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int rc = 0;
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if(!dev) {
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return -1;
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}
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colorRGB = state->color;
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red = (colorRGB >> 16) & 0xFF;
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green = (colorRGB >> 8) & 0xFF;
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blue = colorRGB & 0xFF;
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onMS = state->flashOnMS;
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offMS = state->flashOffMS;
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if (onMS != 0 && offMS != 0)
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blink = 1;
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switch (state->flashMode) {
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case LIGHT_FLASH_HARDWARE:
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if (!!red)
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rc = set_rgb_led_hw_blink(LED_RED, blink);
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if (!!green)
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rc |= set_rgb_led_hw_blink(LED_GREEN, blink);
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if (!!blue)
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rc |= set_rgb_led_hw_blink(LED_BLUE, blink);
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/* fallback to timed blinking if breath is not supported */
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if (rc == 0)
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break;
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case LIGHT_FLASH_TIMED:
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if (!!red)
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rc = set_rgb_led_timer_trigger(LED_RED, onMS, offMS);
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if (!!green)
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rc |= set_rgb_led_timer_trigger(LED_GREEN, onMS, offMS);
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if (!!blue)
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rc |= set_rgb_led_timer_trigger(LED_BLUE, onMS, offMS);
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/* fallback to constant on if timed blinking is not supported */
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if (rc == 0)
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break;
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case LIGHT_FLASH_NONE:
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default:
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rc = set_rgb_led_brightness(LED_RED, red);
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rc |= set_rgb_led_brightness(LED_GREEN, green);
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rc |= set_rgb_led_brightness(LED_BLUE, blue);
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break;
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}
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ALOGD("set_speaker_light_locked mode=%d, colorRGB=%08X, onMS=%d, offMS=%d, rc=%d\n",
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state->flashMode, colorRGB, onMS, offMS, rc);
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return rc;
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}
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static void
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handle_speaker_battery_locked(struct light_device_t* dev)
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{
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if (is_lit(&g_battery)) {
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set_speaker_light_locked(dev, &g_battery);
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} else {
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set_speaker_light_locked(dev, &g_notification);
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}
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}
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static int
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set_light_battery(struct light_device_t* dev,
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struct light_state_t const* state)
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{
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pthread_mutex_lock(&g_lock);
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g_battery = *state;
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handle_speaker_battery_locked(dev);
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pthread_mutex_unlock(&g_lock);
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return 0;
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}
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static int
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set_light_notifications(struct light_device_t* dev,
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struct light_state_t const* state)
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{
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pthread_mutex_lock(&g_lock);
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g_notification = *state;
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handle_speaker_battery_locked(dev);
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pthread_mutex_unlock(&g_lock);
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return 0;
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}
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static int
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set_light_attention(struct light_device_t* dev,
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struct light_state_t const* state)
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{
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pthread_mutex_lock(&g_lock);
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if (state->flashMode == LIGHT_FLASH_HARDWARE) {
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g_attention = state->flashOnMS;
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} else if (state->flashMode == LIGHT_FLASH_NONE) {
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g_attention = 0;
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}
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handle_speaker_battery_locked(dev);
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pthread_mutex_unlock(&g_lock);
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return 0;
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}
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static int
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set_light_buttons(struct light_device_t* dev,
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struct light_state_t const* state)
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{
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int err = 0;
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if(!dev) {
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return -1;
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}
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pthread_mutex_lock(&g_lock);
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err = write_int(BUTTON_FILE, state->color & 0xFF);
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pthread_mutex_unlock(&g_lock);
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return err;
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}
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/** Close the lights device */
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static int
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close_lights(struct light_device_t *dev)
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{
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if (dev) {
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free(dev);
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}
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return 0;
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}
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/******************************************************************************/
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/**
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* module methods
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*/
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/** Open a new instance of a lights device using name */
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static int open_lights(const struct hw_module_t* module, char const* name,
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struct hw_device_t** device)
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{
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int (*set_light)(struct light_device_t* dev,
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struct light_state_t const* state);
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if (0 == strcmp(LIGHT_ID_BACKLIGHT, name)) {
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g_has_persistence_node = !access(PERSISTENCE_FILE, F_OK);
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set_light = set_light_backlight;
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} else if (0 == strcmp(LIGHT_ID_BATTERY, name))
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set_light = set_light_battery;
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else if (0 == strcmp(LIGHT_ID_NOTIFICATIONS, name))
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set_light = set_light_notifications;
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else if (0 == strcmp(LIGHT_ID_BUTTONS, name)) {
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if (!access(BUTTON_FILE, F_OK)) {
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// enable light button when the file is present
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set_light = set_light_buttons;
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} else {
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return -EINVAL;
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}
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}
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else if (0 == strcmp(LIGHT_ID_ATTENTION, name))
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set_light = set_light_attention;
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else
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return -EINVAL;
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pthread_once(&g_init, init_globals);
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struct light_device_t *dev = malloc(sizeof(struct light_device_t));
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if(!dev)
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return -ENOMEM;
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memset(dev, 0, sizeof(*dev));
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dev->common.tag = HARDWARE_DEVICE_TAG;
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dev->common.version = LIGHTS_DEVICE_API_VERSION_2_0;
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dev->common.module = (struct hw_module_t*)module;
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dev->common.close = (int (*)(struct hw_device_t*))close_lights;
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dev->set_light = set_light;
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*device = (struct hw_device_t*)dev;
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return 0;
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}
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static struct hw_module_methods_t lights_module_methods = {
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.open = open_lights,
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};
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/*
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* The lights Module
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*/
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struct hw_module_t HAL_MODULE_INFO_SYM = {
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.tag = HARDWARE_MODULE_TAG,
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.version_major = 1,
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.version_minor = 0,
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.id = LIGHTS_HARDWARE_MODULE_ID,
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.name = "lights Module",
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.author = "Google, Inc.",
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.methods = &lights_module_methods,
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};
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