diff options
author | Sourabh Banerjee <sbanerje@codeaurora.org> | 2015-12-04 19:41:19 +0530 |
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committer | Mohammed Habibulla <moch@google.com> | 2015-12-07 11:35:47 -0800 |
commit | 4b7f0f53afdd02ea09891dd2e6d3d6a236e272d0 (patch) | |
tree | d60d9e88969904c441f93d35a5ea7eb1822bd0f9 | |
parent | 883aede3bc446329510dc2e953b20fa27cf1aab1 (diff) | |
download | qcom-brillo-m8-release.tar.gz |
light hal: implementation for db410cbrillo-m8-release
410c has 6 LEDs board.
This hal implementation can be used to control 5 leds
User LED 1 - notifications
User LED 2 - attention
User LED 3 - button
And the BT and WiFi LEDs.
The HAL implementation does not provide access to LED-4 (boot indicator)
Signed-off-by: Sourabh Banerjee <sbanerje@codeaurora.org>
-rw-r--r-- | lights/Android.mk | 25 | ||||
-rw-r--r-- | lights/NOTICE | 190 | ||||
-rw-r--r-- | lights/lights.c | 209 |
3 files changed, 424 insertions, 0 deletions
diff --git a/lights/Android.mk b/lights/Android.mk new file mode 100644 index 0000000..152c875 --- /dev/null +++ b/lights/Android.mk @@ -0,0 +1,25 @@ +# 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) +include $(CLEAR_VARS) + +LOCAL_SRC_FILES := lights.c +LOCAL_MODULE_RELATIVE_PATH := hw +LOCAL_SHARED_LIBRARIES := liblog +LOCAL_CFLAGS := $(common_flags) -DLOG_TAG=\"qdlights\" +LOCAL_MODULE := lights.$(TARGET_BOARD_PLATFORM) +LOCAL_MODULE_TAGS := optional + +include $(BUILD_SHARED_LIBRARY) diff --git a/lights/NOTICE b/lights/NOTICE new file mode 100644 index 0000000..7340b9e --- /dev/null +++ b/lights/NOTICE @@ -0,0 +1,190 @@ + + 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. + + 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. + + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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All rights reserved. + * + * 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_NDEBUG 0 + +#include <cutils/log.h> + +#include <string.h> +#include <errno.h> +#include <pthread.h> +#include <stdlib.h> + +#include <hardware/lights.h> + +/******************************************************************************/ +#define SET_LIGHT(color) (color & 0xffffff ? 0x28 : 0) + +static pthread_once_t g_init = PTHREAD_ONCE_INIT; +static pthread_mutex_t g_lock = PTHREAD_MUTEX_INITIALIZER; + +char const* const LED1_LED_FILE + = "/sys/class/leds/led1/brightness"; + +char const* const LED2_LED_FILE + = "/sys/class/leds/led2/brightness"; + +char const* const LED3_LED_FILE + = "/sys/class/leds/led3/brightness"; + +char const* const BLUETOOTH_LED_FILE + = "/sys/class/leds/bt/brightness"; + +char const* const WIFI_LED_FILE + = "/sys/class/leds/wlan/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) +{ + FILE *fd; + + fd = fopen(path, "w+"); + if (fd) { + int bytes = fprintf(fd, "%d", value); + fclose(fd); + return (bytes < 0 ? bytes : 0); + } else { + ALOGE("write_int failed to open %s\n", path); + return -errno; + } +} + +static int set_light_notifications(struct light_device_t* dev, + struct light_state_t const* state) +{ + int err = 0; + if(!dev) { + return -1; + } + pthread_mutex_lock(&g_lock); + err = write_int(LED1_LED_FILE, SET_LIGHT(state->color)); + pthread_mutex_unlock(&g_lock); + return err; +} + +static int set_light_attention(struct light_device_t* dev, + struct light_state_t const* state) +{ + int err = 0; + if(!dev) { + return -1; + } + pthread_mutex_lock(&g_lock); + err = write_int(LED2_LED_FILE, SET_LIGHT(state->color)); + pthread_mutex_unlock(&g_lock); + return err; +} + +static int set_light_buttons(struct light_device_t* dev, + struct light_state_t const* state) +{ + int err = 0; + if(!dev) { + return -1; + } + pthread_mutex_lock(&g_lock); + err = write_int(LED3_LED_FILE, SET_LIGHT(state->color)); + pthread_mutex_unlock(&g_lock); + return err; +} + +static int set_light_bluetooth(struct light_device_t* dev, + struct light_state_t const* state) +{ + int err = 0; + if(!dev) { + return -1; + } + pthread_mutex_lock(&g_lock); + err = write_int(BLUETOOTH_LED_FILE, SET_LIGHT(state->color)); + pthread_mutex_unlock(&g_lock); + return err; +} + +static int set_light_wifi(struct light_device_t* dev, + struct light_state_t const* state) +{ + int err = 0; + if(!dev) { + return -1; + } + pthread_mutex_lock(&g_lock); + err = write_int(WIFI_LED_FILE, SET_LIGHT(state->color)); + pthread_mutex_unlock(&g_lock); + return err; +} + +/** 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_NOTIFICATIONS, name)) + set_light = set_light_notifications; + else if (0 == strcmp(LIGHT_ID_ATTENTION, name)) + set_light = set_light_attention; + else if (0 == strcmp(LIGHT_ID_BUTTONS, name)) + set_light = set_light_buttons; + else if (0 == strcmp(LIGHT_ID_BLUETOOTH, name)) + set_light = set_light_bluetooth; + else if (0 == strcmp(LIGHT_ID_WIFI, name)) + set_light = set_light_wifi; + else + return -EINVAL; + + pthread_once(&g_init, init_globals); + + struct light_device_t *dev = calloc( 1, sizeof(struct light_device_t)); + + if(!dev) + return -ENOMEM; + + 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 = "Lights Module", + .author = "Qualcomm", + .methods = &lights_module_methods, +}; |