forked from Imagelibrary/rtems
5d5b9eeb08
This patch changes the license to BSD-2 for all source files where the copyright is held by Aeroflex Gaisler, Cobham Gaisler, or Gaisler Research. Some files also includes copyright right statements from OAR and/or embedded Brains in addition to Gaisler. Updates #3053.
59 lines
2.2 KiB
C
59 lines
2.2 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
|
|
|
|
/*
|
|
* AMBA Plug & Play routines
|
|
*
|
|
* COPYRIGHT (c) 2011
|
|
* Aeroflex Gaisler
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <grlib/ambapp.h>
|
|
|
|
/* AMBAPP helper routine to find a device by index. The function is given to
|
|
* ambapp_for_each, the argument may be NULL (find first device) or a pointer
|
|
* to a index which is downcounted until 0 is reached. If the int-pointer
|
|
* points to a value of:
|
|
* 0 - first device is returned
|
|
* 1 - second device is returned
|
|
* ...
|
|
*
|
|
* The matching device is returned, which will stop the ambapp_for_each search.
|
|
* If zero is returned from ambapp_for_each no device matching the index was
|
|
* found
|
|
*/
|
|
int ambapp_find_by_idx(struct ambapp_dev *dev, int index, void *pcount)
|
|
{
|
|
int *pi = pcount;
|
|
|
|
if (pi) {
|
|
if ((*pi)-- == 0)
|
|
return (int)dev;
|
|
else
|
|
return 0;
|
|
} else {
|
|
/* Satisfied with first matching device, stop search */
|
|
return (int)dev;
|
|
}
|
|
}
|