157 lines
3.9 KiB
C
157 lines
3.9 KiB
C
/*
|
|
* Copyright (c) 2015-2016 Intel Corporation.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <device.h>
|
|
#include <misc/util.h>
|
|
#include <atomic.h>
|
|
|
|
extern struct device __device_init_start[];
|
|
extern struct device __device_PRE_KERNEL_1_start[];
|
|
extern struct device __device_PRE_KERNEL_2_start[];
|
|
extern struct device __device_POST_KERNEL_start[];
|
|
extern struct device __device_APPLICATION_start[];
|
|
|
|
/* Deprecated */
|
|
extern struct device __device_PRIMARY_start[];
|
|
extern struct device __device_SECONDARY_start[];
|
|
extern struct device __device_NANOKERNEL_start[];
|
|
extern struct device __device_MICROKERNEL_start[];
|
|
|
|
extern struct device __device_init_end[];
|
|
|
|
static struct device *config_levels[] = {
|
|
__device_PRE_KERNEL_1_start,
|
|
__device_PRE_KERNEL_2_start,
|
|
__device_POST_KERNEL_start,
|
|
__device_APPLICATION_start,
|
|
|
|
/* Deprecated levels */
|
|
__device_PRIMARY_start,
|
|
__device_SECONDARY_start,
|
|
__device_NANOKERNEL_start,
|
|
__device_MICROKERNEL_start,
|
|
|
|
/* End marker */
|
|
__device_init_end,
|
|
};
|
|
|
|
#ifdef CONFIG_DEVICE_POWER_MANAGEMENT
|
|
struct device_pm_ops device_pm_ops_nop = {device_pm_nop, device_pm_nop};
|
|
extern uint32_t __device_busy_start[];
|
|
extern uint32_t __device_busy_end[];
|
|
#define DEVICE_BUSY_SIZE (__device_busy_end - __device_busy_start)
|
|
#endif
|
|
|
|
/**
|
|
* @brief Execute all the device initialization functions at a given level
|
|
*
|
|
* @details Invokes the initialization routine for each device object
|
|
* created by the DEVICE_INIT() macro using the specified level.
|
|
* The linker script places the device objects in memory in the order
|
|
* they need to be invoked, with symbols indicating where one level leaves
|
|
* off and the next one begins.
|
|
*
|
|
* @param level init level to run.
|
|
*/
|
|
void _sys_device_do_config_level(int level)
|
|
{
|
|
struct device *info;
|
|
|
|
for (info = config_levels[level]; info < config_levels[level+1]; info++) {
|
|
struct device_config *device = info->config;
|
|
|
|
device->init(info);
|
|
}
|
|
}
|
|
|
|
struct device *device_get_binding(const char *name)
|
|
{
|
|
struct device *info;
|
|
|
|
for (info = __device_init_start; info != __device_init_end; info++) {
|
|
if (info->driver_api && !strcmp(name, info->config->name)) {
|
|
return info;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
#ifdef CONFIG_DEVICE_POWER_MANAGEMENT
|
|
int device_pm_nop(struct device *unused_device, int unused_policy)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int device_pm_control_nop(struct device *unused_device,
|
|
uint32_t unused_ctrl_command, void *unused_context)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void device_list_get(struct device **device_list, int *device_count)
|
|
{
|
|
|
|
*device_list = __device_init_start;
|
|
*device_count = __device_init_end - __device_init_start;
|
|
}
|
|
|
|
|
|
int device_any_busy_check(void)
|
|
{
|
|
int i = 0;
|
|
|
|
for (i = 0; i < DEVICE_BUSY_SIZE; i++) {
|
|
if (__device_busy_start[i] != 0) {
|
|
return -EBUSY;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int device_busy_check(struct device *chk_dev)
|
|
{
|
|
if (atomic_test_bit((const atomic_t *)__device_busy_start,
|
|
(chk_dev - __device_init_start))) {
|
|
return -EBUSY;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
void device_busy_set(struct device *busy_dev)
|
|
{
|
|
#ifdef CONFIG_DEVICE_POWER_MANAGEMENT
|
|
atomic_set_bit((atomic_t *) __device_busy_start,
|
|
(busy_dev - __device_init_start));
|
|
#else
|
|
ARG_UNUSED(busy_dev);
|
|
#endif
|
|
}
|
|
|
|
void device_busy_clear(struct device *busy_dev)
|
|
{
|
|
#ifdef CONFIG_DEVICE_POWER_MANAGEMENT
|
|
atomic_clear_bit((atomic_t *) __device_busy_start,
|
|
(busy_dev - __device_init_start));
|
|
#else
|
|
ARG_UNUSED(busy_dev);
|
|
#endif
|
|
}
|