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author | atinm <atin.malaviya@gmail.com> | 2011-05-17 11:12:26 -0400 |
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committer | atinm <atin.malaviya@gmail.com> | 2011-05-17 11:12:26 -0400 |
commit | 93a7e5951c8dfcdf609161875493ef6925f68ca7 (patch) | |
tree | 4f6a18bc3d66a41021e627412a54bb80567264c3 /liblight/lights.c | |
parent | 306e030c5772b1cd1d38a4801db2bc128021003a (diff) | |
download | device_samsung_aries-common-93a7e5951c8dfcdf609161875493ef6925f68ca7.zip device_samsung_aries-common-93a7e5951c8dfcdf609161875493ef6925f68ca7.tar.gz device_samsung_aries-common-93a7e5951c8dfcdf609161875493ef6925f68ca7.tar.bz2 |
moved to device/samsung/aries-common
Diffstat (limited to 'liblight/lights.c')
-rw-r--r-- | liblight/lights.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/liblight/lights.c b/liblight/lights.c new file mode 100644 index 0000000..118fa66 --- /dev/null +++ b/liblight/lights.c @@ -0,0 +1,153 @@ +/* + * Copyright (C) 2008 The Android Open Source Project + * Copyright (C) 2011 <kang@insecure.ws> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#define LOG_TAG "lights" +#include <cutils/log.h> +#include <stdint.h> +#include <string.h> +#include <errno.h> +#include <fcntl.h> +#include <pthread.h> +#include <sys/ioctl.h> +#include <sys/types.h> +#include <hardware/lights.h> + +static pthread_once_t g_init = PTHREAD_ONCE_INIT; +static pthread_mutex_t g_lock = PTHREAD_MUTEX_INITIALIZER; + +char const *const LCD_FILE = "/sys/class/backlight/s5p_bl/brightness"; +char const *const LED_FILE = "/sys/class/misc/notification/led"; + +static int write_int(char const *path, int value) +{ + int fd; + static int already_warned; + + already_warned = 0; + + LOGV("write_int: path %s, value %d", path, value); + fd = open(path, O_RDWR); + + if (fd >= 0) { + char buffer[20]; + int bytes = sprintf(buffer, "%d\n", value); + int amt = write(fd, buffer, bytes); + close(fd); + return amt == -1 ? -errno : 0; + } else { + if (already_warned == 0) { + LOGE("write_int failed to open %s\n", path); + already_warned = 1; + } + return -errno; + } +} + +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_notifications(struct light_device_t* dev, + struct light_state_t const* state) +{ + int brightness = rgb_to_brightness(state); + int v = 0; + int ret = 0; + pthread_mutex_lock(&g_lock); + + if (brightness+state->color == 0 || brightness > 100) { + if (state->color & 0x00ffffff) + v = 1; + } else + v = 0; + + LOGI("color %u fm %u status %u is lit %u brightness", state->color, state->flashMode, v, (state->color & 0x00ffffff), brightness); + ret = write_int(LED_FILE, v); + pthread_mutex_unlock(&g_lock); + return ret; +} + +static int set_light_backlight(struct light_device_t *dev, + struct light_state_t const *state) +{ + int err = 0; + int brightness = rgb_to_brightness(state); + + pthread_mutex_lock(&g_lock); + err = write_int(LCD_FILE, brightness); + + pthread_mutex_unlock(&g_lock); + return err; +} + +static int close_lights(struct light_device_t *dev) +{ + LOGV("close_light is called"); + if (dev) + free(dev); + + return 0; +} + +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); + + LOGV("open_lights: open with %s", name); + + if (0 == strcmp(LIGHT_ID_BACKLIGHT, name)) + set_light = set_light_backlight; + else if (0 == strcmp(LIGHT_ID_NOTIFICATIONS, name)) + set_light = set_light_notifications; + else + return -EINVAL; + + pthread_mutex_init(&g_lock, NULL); + + struct light_device_t *dev = malloc(sizeof(struct light_device_t)); + memset(dev, 0, sizeof(*dev)); + + dev->common.tag = HARDWARE_DEVICE_TAG; + dev->common.version = 0; + dev->common.module = (struct hw_module_t *)module; + dev->common.close = (int (*)(struct hw_device_t *))close_lights; + dev->set_light = set_light; + + *device = (struct hw_device_t *)dev; + + return 0; +} + +static struct hw_module_methods_t lights_module_methods = { + .open = open_lights, +}; + +const struct hw_module_t HAL_MODULE_INFO_SYM = { + .tag = HARDWARE_MODULE_TAG, + .version_major = 1, + .version_minor = 0, + .id = LIGHTS_HARDWARE_MODULE_ID, + .name = "lights Module", + .author = "Google, Inc.", + .methods = &lights_module_methods, +}; |