forked from Archive/PX4-Autopilot
124 lines
4.2 KiB
C
124 lines
4.2 KiB
C
/****************************************************************************
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* nuttx/graphics/nxconsole/nxcon_unregister.c
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <nuttx/kmalloc.h>
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#include <nuttx/nx/nxconsole.h>
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#include "nxcon_internal.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxcon_unregister
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*
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* Description:
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* Un-register to NX console device.
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*
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* Input Parameters:
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* handle - A handle previously returned by nx_register, nxtk_register, or
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* nxtool_register.
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void nxcon_unregister(NXCONSOLE handle)
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{
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FAR struct nxcon_state_s *priv;
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char devname[NX_DEVNAME_SIZE];
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int i;
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DEBUGASSERT(handle);
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/* Get the reference to the driver structure from the handle */
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priv = (FAR struct nxcon_state_s *)handle;
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sem_destroy(&priv->exclsem);
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#ifdef CONFIG_NXCONSOLE_NXKBDIN
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sem_destroy(&priv->waitsem);
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#endif
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/* Free all allocated glyph bitmap */
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for (i = 0; i < CONFIG_NXCONSOLE_CACHESIZE; i++)
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{
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FAR struct nxcon_glyph_s *glyph = &priv->glyph[i];
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if (glyph->bitmap)
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{
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kfree(glyph->bitmap);
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}
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}
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/* Unregister the driver */
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snprintf(devname, NX_DEVNAME_SIZE, NX_DEVNAME_FORMAT, priv->minor);
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(void)unregister_driver(devname);
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/* Free the private data structure */
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kfree(handle);
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}
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