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/*
* Copyright (C) 2011 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.
*/
#define LOG_TAG "local_time_hw_default"
//#define LOG_NDEBUG 0
#include <errno.h>
#include <malloc.h>
#include <stdint.h>
#include <string.h>
#include <sys/time.h>
#include <cutils/log.h>
#include <hardware/hardware.h>
#include <hardware/local_time_hal.h>
struct stub_local_time_device {
struct local_time_hw_device device;
};
static int64_t ltdev_get_local_time(struct local_time_hw_device* dev)
{
struct timespec ts;
uint64_t now;
int ret;
ret = clock_gettime(CLOCK_MONOTONIC, &ts);
if (ret < 0) {
ALOGW("%s failed to fetch CLOCK_MONOTONIC value! (res = %d)",
dev->common.module->name, ret);
return 0;
}
now = (((uint64_t)ts.tv_sec) * 1000000000ull) +
((uint64_t)ts.tv_nsec);
return (int64_t)now;
}
static uint64_t ltdev_get_local_freq(struct local_time_hw_device* dev)
{
// For better or worse, linux clock_gettime routines normalize all clock
// frequencies to 1GHz
return 1000000000ull;
}
static int ltdev_close(hw_device_t *device)
{
free(device);
return 0;
}
static int ltdev_open(const hw_module_t* module, const char* name,
hw_device_t** device)
{
struct stub_local_time_device *ltdev;
struct timespec ts;
int ret;
if (strcmp(name, LOCAL_TIME_HARDWARE_INTERFACE) != 0)
return -EINVAL;
ltdev = calloc(1, sizeof(struct stub_local_time_device));
if (!ltdev)
return -ENOMEM;
ltdev->device.common.tag = HARDWARE_DEVICE_TAG;
ltdev->device.common.version = 0;
ltdev->device.common.module = (struct hw_module_t *) module;
ltdev->device.common.close = ltdev_close;
ltdev->device.get_local_time = ltdev_get_local_time;
ltdev->device.get_local_freq = ltdev_get_local_freq;
ltdev->device.set_local_slew = NULL;
ltdev->device.get_debug_log = NULL;
*device = <dev->device.common;
return 0;
}
static struct hw_module_methods_t hal_module_methods = {
.open = ltdev_open,
};
struct local_time_module HAL_MODULE_INFO_SYM = {
.common = {
.tag = HARDWARE_MODULE_TAG,
.version_major = 1,
.version_minor = 0,
.id = LOCAL_TIME_HARDWARE_MODULE_ID,
.name = "Default local_time HW HAL",
.author = "The Android Open Source Project",
.methods = &hal_module_methods,
},
};
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