Originally written by Andreas Schneider for Slte. Change-Id: Iccff1e4532bc460896940451093470ece9086fb9tirimbino
parent
87a5957b93
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79a9b15147
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# Copyright (C) 2015 The CyanogenMod 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:= $(call my-dir)
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ifneq ($(TARGET_PROVIDES_LIBLIGHT),true) |
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include $(CLEAR_VARS) |
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LOCAL_MODULE := lights.$(TARGET_BOOTLOADER_BOARD_NAME)
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LOCAL_MODULE_RELATIVE_PATH := hw
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LOCAL_SHARED_LIBRARIES := liblog
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LOCAL_SRC_FILES := lights.c
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LOCAL_MODULE_TAGS := optional
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include $(BUILD_SHARED_LIBRARY) |
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endif |
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Copyright (C) 2012 The Android Open Source Project |
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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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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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Apache License |
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Version 2.0, January 2004 |
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http://www.apache.org/licenses/ |
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TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION |
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@ -0,0 +1,339 @@ |
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/*
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* Copyright (C) 2013 The Android Open Source Project |
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* Copyright (C) 2015 The CyanogenMod 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_TAG "SamsungLightsHAL" |
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/* #define LOG_NDEBUG 0 */ |
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#include <cutils/log.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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#define PANEL_FILE "/sys/class/backlight/panel/brightness" |
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#define BUTTON_FILE "/sys/class/sec/sec_touchkey/brightness" |
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#define LED_BLINK "/sys/class/sec/led/led_blink" |
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#define COLOR_MASK 0x00ffffff |
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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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struct led_config { |
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unsigned int color; |
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int delay_on, delay_off; |
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}; |
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static struct led_config g_leds[3]; // For battery, notifications, and attention.
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static int g_cur_led = -1; // Presently showing LED of the above.
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void init_g_lock(void) |
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{ |
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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; |
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already_warned = 0; |
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ALOGV("write_int: path %s, value %d", path, value); |
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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 = sprintf(buffer, "%d\n", value); |
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int amt = write(fd, buffer, 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\n", path); |
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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 int write_str(char const *path, const char* value) |
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{ |
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int fd; |
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static int already_warned; |
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already_warned = 0; |
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ALOGV("write_str: path %s, value %s", path, value); |
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fd = open(path, O_RDWR); |
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if (fd >= 0) { |
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int amt = write(fd, value, strlen(value)); |
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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_str failed to open %s\n", path); |
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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 int rgb_to_brightness(struct light_state_t const *state) |
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{ |
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int color = state->color & COLOR_MASK; |
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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 set_light_backlight(struct light_device_t *dev __unused, |
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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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pthread_mutex_lock(&g_lock); |
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err = write_int(PANEL_FILE, brightness); |
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pthread_mutex_unlock(&g_lock); |
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return err; |
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} |
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static int set_light_buttons(struct light_device_t* dev __unused, |
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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 on = (state->color & COLOR_MASK); |
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pthread_mutex_lock(&g_lock); |
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err = write_int(BUTTON_FILE, on ? 1 : 0); |
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pthread_mutex_unlock(&g_lock); |
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return err; |
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} |
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static int close_lights(struct light_device_t *dev) |
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{ |
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ALOGV("close_light is called"); |
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if (dev) |
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free(dev); |
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return 0; |
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} |
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/* LEDs */ |
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static int write_leds(const struct led_config *led) |
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{ |
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static const struct led_config led_off = {0, 0, 0}; |
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char blink[32]; |
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int count, err; |
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int color; |
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if (led == NULL) |
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led = &led_off; |
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count = snprintf(blink, |
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sizeof(blink) - 1, |
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"0x%08x %d %d", |
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led->color, |
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led->delay_on, |
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led->delay_off); |
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if (count < 0) { |
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return -errno; |
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} else if ((unsigned int)count >= sizeof(blink)-1) { |
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ALOGE("%s: Truncated string: blink=\"%s\".", __func__, blink); |
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return -EINVAL; |
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} |
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ALOGV("%s: color=0x%08x, delay_on=%d, delay_off=%d, blink=\"%s\".", |
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__func__, led->color, led->delay_on, led->delay_off, blink); |
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/* Add '\n' here to make the above log message clean. */ |
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blink[count] = '\n'; |
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blink[count+1] = '\0'; |
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pthread_mutex_lock(&g_lock); |
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err = write_str(LED_BLINK, blink); |
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pthread_mutex_unlock(&g_lock); |
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return err; |
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} |
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static int set_light_leds(struct light_state_t const *state, int type) |
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{ |
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struct led_config *led; |
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int err = 0; |
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ALOGV("%s: type=%d, color=0x%010x, fM=%d, fOnMS=%d, fOffMs=%d.", __func__, |
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type, state->color,state->flashMode, state->flashOnMS, state->flashOffMS); |
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if (type < 0 || (size_t)type >= sizeof(g_leds)/sizeof(g_leds[0])) { |
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return -EINVAL; |
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} |
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/* type is one of:
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* 0. battery |
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* 1. notifications |
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* 2. attention |
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* which are multiplexed onto the same physical LED in the above order. */ |
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led = &g_leds[type]; |
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switch (state->flashMode) { |
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case LIGHT_FLASH_NONE: |
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/* Set LED to a solid color, spec is unclear on the exact behavior here. */ |
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led->delay_on = led->delay_off = 0; |
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break; |
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case LIGHT_FLASH_TIMED: |
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case LIGHT_FLASH_HARDWARE: |
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led->delay_on = state->flashOnMS; |
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led->delay_off = state->flashOffMS; |
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break; |
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default: |
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return -EINVAL; |
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} |
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led->color = state->color & COLOR_MASK; |
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if (led->color > 0) { |
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/* This LED is lit. */ |
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if (type >= g_cur_led) { |
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/* And it has the highest priority, so show it. */ |
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err = write_leds(led); |
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g_cur_led = type; |
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} |
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} else { |
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/* This LED is not (any longer) lit. */ |
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if (type == g_cur_led) { |
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/* But it is currently showing, switch to a lower-priority LED. */ |
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int i; |
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for (i = type-1; i >= 0; i--) { |
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if (g_leds[i].color > 0) { |
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/* Found a lower-priority LED to switch to. */ |
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err = write_leds(&g_leds[i]); |
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goto switched; |
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} |
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} |
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/* No LEDs are lit, turn off. */ |
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err = write_leds(NULL); |
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switched: |
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g_cur_led = i; |
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} |
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} |
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return err; |
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} |
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static int set_light_leds_battery(struct light_device_t *dev __unused, |
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struct light_state_t const *state) |
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{ |
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return set_light_leds(state, 0); |
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} |
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static int set_light_leds_notifications(struct light_device_t *dev __unused, |
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struct light_state_t const *state) |
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{ |
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return set_light_leds(state, 1); |
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} |
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static int set_light_leds_attention(struct light_device_t *dev __unused, |
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struct light_state_t const *state) |
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{ |
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struct light_state_t fixed; |
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memcpy(&fixed, state, sizeof(fixed)); |
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/* The framework does odd things with the attention lights, fix them up to
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* do something sensible here. */ |
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switch (fixed.flashMode) { |
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case LIGHT_FLASH_NONE: |
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/* LightsService.Light::stopFlashing calls with non-zero color. */ |
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fixed.color = 0; |
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break; |
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case LIGHT_FLASH_HARDWARE: |
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/* PowerManagerService::setAttentionLight calls with onMS=3, offMS=0, which
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* just makes for a slightly-dimmer LED. */ |
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if (fixed.flashOnMS > 0 && fixed.flashOffMS == 0) |
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fixed.flashMode = LIGHT_FLASH_NONE; |
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fixed.color = 0x000000ff; |
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break; |
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} |
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return set_light_leds(&fixed, 2); |
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} |
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|
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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)) |
||||
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_leds_battery; |
||||
else if (0 == strcmp(LIGHT_ID_NOTIFICATIONS, name)) |
||||
set_light = set_light_leds_notifications; |
||||
else if (0 == strcmp(LIGHT_ID_ATTENTION, name)) |
||||
set_light = set_light_leds_attention; |
||||
else |
||||
return -EINVAL; |
||||
|
||||
pthread_once(&g_init, init_g_lock); |
||||
|
||||
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, |
||||
}; |
||||
|
||||
struct hw_module_t HAL_MODULE_INFO_SYM = { |
||||
.tag = HARDWARE_MODULE_TAG, |
||||
.version_major = 1, |
||||
.version_minor = 0, |
||||
.id = LIGHTS_HARDWARE_MODULE_ID, |
||||
.name = "Samsung Lights Module", |
||||
.author = "The CyanogenMod Project", |
||||
.methods = &lights_module_methods, |
||||
}; |
Loading…
Reference in new issue