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- /****************************************************************************
- * nuttx/graphics/nxconsole/nxcon_register.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 <assert.h>
- #include <errno.h>
- #include <debug.h>
- #include <nuttx/kmalloc.h>
- #include <nuttx/fs/fs.h>
- #include "nxcon_internal.h"
- /****************************************************************************
- * Private Function Prototypes
- ****************************************************************************/
- /****************************************************************************
- * Private Data
- ****************************************************************************/
- /****************************************************************************
- * Private Functions
- ****************************************************************************/
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: nxcon_allocate
- ****************************************************************************/
- FAR struct nxcon_state_s *
- nxcon_register(NXCONSOLE handle, FAR struct nxcon_window_s *wndo,
- FAR const struct nxcon_operations_s *ops, int minor)
- {
- FAR struct nxcon_state_s *priv;
- char devname[NX_DEVNAME_SIZE];
- int ret;
- DEBUGASSERT(handle && wndo && ops && (unsigned)minor < 256);
- /* Allocate the driver structure */
- priv = (FAR struct nxcon_state_s *)kzalloc(sizeof(struct nxcon_state_s));
- if (!priv)
- {
- gdbg("Failed to allocate the NX driver structure\n");
- return NULL;
- }
- /* Initialize the driver structure */
- priv->ops = ops;
- priv->handle = handle;
- priv->minor = minor;
- memcpy(&priv->wndo, wndo, sizeof( struct nxcon_window_s));
- sem_init(&priv->exclsem, 0, 1);
- #ifdef CONFIG_DEBUG
- priv->holder = NO_HOLDER;
- #endif
- #ifdef CONFIG_NXCONSOLE_NXKBDIN
- sem_init(&priv->waitsem, 0, 0);
- #endif
- /* Select the font */
- priv->font = nxf_getfonthandle(wndo->fontid);
- if (!priv->font)
- {
- gdbg("Failed to get font ID %d: %d\n", wndo->fontid, errno);
- goto errout;
- }
- FAR const struct nx_font_s *fontset;
- /* Get information about the font set being used and save this in the
- * state structure
- */
- fontset = nxf_getfontset(priv->font);
- priv->fheight = fontset->mxheight;
- priv->fwidth = fontset->mxwidth;
- priv->spwidth = fontset->spwidth;
- /* Set up the text cache */
- priv->maxchars = CONFIG_NXCONSOLE_MXCHARS;
- /* Set up the font glyph bitmap cache */
- priv->maxglyphs = CONFIG_NXCONSOLE_CACHESIZE;
- /* Set the initial display position */
- nxcon_home(priv);
- /* Show the cursor */
- priv->cursor.code = CONFIG_NXCONSOLE_CURSORCHAR;
- nxcon_showcursor(priv);
- /* Register the driver */
- snprintf(devname, NX_DEVNAME_SIZE, NX_DEVNAME_FORMAT, minor);
- ret = register_driver(devname, &g_nxcon_drvrops, 0666, priv);
- if (ret < 0)
- {
- gdbg("Failed to register %s\n", devname);
- }
- return (NXCONSOLE)priv;
- errout:
- kfree(priv);
- return NULL;
- }
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