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Diffstat (limited to 'nuttx/graphics/nxconsole/nxcon_unregister.c')
-rw-r--r-- | nuttx/graphics/nxconsole/nxcon_unregister.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/nuttx/graphics/nxconsole/nxcon_unregister.c b/nuttx/graphics/nxconsole/nxcon_unregister.c new file mode 100644 index 000000000..af6a53370 --- /dev/null +++ b/nuttx/graphics/nxconsole/nxcon_unregister.c @@ -0,0 +1,123 @@ +/**************************************************************************** + * 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); +} |