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- /****************************************************************************
- * nuttx/graphics/nxconsole/nxcon_unregister.c
- *
- * Copyright (C) 2012 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 <stdbool.h>
- #include <stdio.h>
- #include <string.h>
- #include <errno.h>
- #include <nuttx/kmalloc.h>
- #include <nuttx/nx/nxconsole.h>
- #include "nxcon_internal.h"
- /****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
- /****************************************************************************
- * Private Function Prototypes
- ****************************************************************************/
- /****************************************************************************
- * Private Data
- ****************************************************************************/
- /****************************************************************************
- * Private Functions
- ****************************************************************************/
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: nxcon_unregister
- *
- * Description:
- * Un-register to NX console device.
- *
- * Input Parameters:
- * handle - A handle previously returned by nx_register, nxtk_register, or
- * nxtool_register.
- *
- * Returned Value:
- * None
- *
- ****************************************************************************/
- void nxcon_unregister(NXCONSOLE handle)
- {
- FAR struct nxcon_state_s *priv;
- char devname[NX_DEVNAME_SIZE];
- int i;
- DEBUGASSERT(handle);
- /* Get the reference to the driver structure from the handle */
- priv = (FAR struct nxcon_state_s *)handle;
- sem_destroy(&priv->exclsem);
- #ifdef CONFIG_NXCONSOLE_NXKBDIN
- sem_destroy(&priv->waitsem);
- #endif
- /* Free all allocated glyph bitmap */
- for (i = 0; i < CONFIG_NXCONSOLE_CACHESIZE; i++)
- {
- FAR struct nxcon_glyph_s *glyph = &priv->glyph[i];
- if (glyph->bitmap)
- {
- kfree(glyph->bitmap);
- }
- }
- /* Unregister the driver */
- snprintf(devname, NX_DEVNAME_SIZE, NX_DEVNAME_FORMAT, priv->minor);
- (void)unregister_driver(devname);
- /* Free the private data structure */
- kfree(handle);
- }
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