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/****************************************************************************
* configs/boardctl.c
*
* Copyright (C) 2015 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sys/boardctl.h>
#include <stdint.h>
#include <errno.h>
#include <nuttx/board.h>
#ifdef CONFIG_LIB_BOARDCTL
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: boardctl
*
* Description:
* In a small embedded system, there will typically be a much greater
* interaction between application and low-level board features. The
* canonically correct to implement such interactions is by implementing a
* character driver and performing the interactions via low level ioctl
* calls. This, however, may not be practical in many cases and will lead
* to "correct" but awkward implementations.
*
* boardctl() is non-standard OS interface to alleviate the problem. It
* basically circumvents the normal device driver ioctl interlace and allows
* the application to perform direction IOCTL-like calls to the board-specific
* logic. In it is especially useful for setting up board operational and
* test configurations.
*
* Input Parameters:
* cmd - Identifies the board command to be executed
* arg - The argument that accompanies the command. The nature of the
* argument is determined by the specific command.
*
* Returned Value:
* On success zero (OK) is returned; -1 (ERROR) is returned on failure
* with the errno variable to to indicate the nature of the failure.
*
****************************************************************************/
int boardctl(unsigned int cmd, uintptr_t arg)
{
int ret;
switch (cmd)
{
/* CMD: BOARDIOC_INIT
* DESCRIPTION: Perform one-time application initialization.
* ARG: None
* CONFIGURATION: CONFIG_LIB_BOARDCTL
* DEPENDENCIES: Board logic must provide board_app_initialization
*/
case BOARDIOC_INIT:
ret = board_app_initialize();
break;
#ifdef CONFIG_BOARDCTL_TSCTEST
/* CMD: BOARDIOC_TSCTEST_SETUP
* DESCRIPTION: Touchscreen controller test configuration
* ARG: Touch controller device minor number
* CONFIGURATION: CONFIG_LIB_BOARDCTL && CONFIG_BOARDCTL_TSCTEST
* DEPENDENCIES: Board logic must provide board_tsc_setup()
*/
case BOARDIOC_TSCTEST_SETUP:
{
ret = board_tsc_setup((int)arg);
}
break;
/* CMD: BOARDIOC_TSCTEST_TEARDOWN
* DESCRIPTION: Touchscreen controller test configuration
* ARG: None
* CONFIGURATION: CONFIG_LIB_BOARDCTL && CONFIG_BOARDCTL_TSCTEST
* DEPENDENCIES: Board logic must provide board_tsc_teardown()
*/
case BOARDIOC_TSCTEST_TEARDOWN:
{
board_tsc_teardown();
ret = OK;
}
break;
#endif
default:
ret = -ENOTTY;
break;
}
/* Set the errno value on any errors */
if (ret < 0)
{
set_errno(-ret);
return ERROR;
}
return OK;
}
#endif /* CONFIG_LIB_BOARDCTL */
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