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);
+}