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driver.c
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driver.c
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/*
* Copyright (c) 2012 Corey Tabaka
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <dev/driver.h>
#include <assert.h>
#include <err.h>
#include <trace.h>
extern struct device __devices[];
extern struct device __devices_end[];
status_t device_init_all(void)
{
status_t res = NO_ERROR;
struct device *dev = __devices;
while (dev != __devices_end) {
status_t code = device_init(dev);
if (code < 0) {
TRACEF("Driver init failed for driver \"%s\", device \"%s\", reason %d\n",
dev->driver->type, dev->name, code);
res = code;
}
dev++;
}
return res;
}
status_t device_fini_all(void)
{
status_t res = NO_ERROR;
struct device *dev = __devices;
while (dev != __devices_end) {
status_t code = device_fini(dev);
if (code < 0) {
TRACEF("Driver fini failed for driver \"%s\", device \"%s\", reason %d\n",
dev->driver->type, dev->name, code);
res = code;
}
dev++;
}
return res;
}
status_t device_init(struct device *dev)
{
if (!dev)
return ERR_INVALID_ARGS;
DEBUG_ASSERT(dev->driver);
const struct driver_ops *ops = dev->driver->ops;
if (ops && ops->init)
return ops->init(dev);
else
return ERR_NOT_SUPPORTED;
}
status_t device_fini(struct device *dev)
{
if (!dev)
return ERR_INVALID_ARGS;
DEBUG_ASSERT(dev->driver);
const struct driver_ops *ops = dev->driver->ops;
if (ops && ops->fini)
return ops->fini(dev);
else
return ERR_NOT_SUPPORTED;
}
status_t device_suspend(struct device *dev)
{
if (!dev)
return ERR_NOT_SUPPORTED;
DEBUG_ASSERT(dev->driver);
const struct driver_ops *ops = dev->driver->ops;
if (ops && ops->suspend)
return ops->suspend(dev);
else
return ERR_NOT_SUPPORTED;
}
status_t device_resume(struct device *dev)
{
if (!dev)
return ERR_NOT_SUPPORTED;
DEBUG_ASSERT(dev->driver);
const struct driver_ops *ops = dev->driver->ops;
if (ops && ops->resume)
return ops->resume(dev);
else
return ERR_NOT_SUPPORTED;
}