110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
/*
|
|
* 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,
|
|
},
|
|
};
|