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- /****************************************************************************
- * nuttx/graphics/nxterm/nxterm_register.c
- *
- * Copyright (C) 2012, 2016-2017 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/semaphore.h>
- #include <nuttx/fs/fs.h>
- #include "nxterm.h"
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: nxterm_allocate
- ****************************************************************************/
- FAR struct nxterm_state_s *
- nxterm_register(NXTERM handle, FAR struct nxterm_window_s *wndo,
- FAR const struct nxterm_operations_s *ops, int minor)
- {
- FAR struct nxterm_state_s *priv;
- FAR const struct nx_font_s *fontset;
- char devname[NX_DEVNAME_SIZE];
- NXHANDLE hfont;
- int ret;
- DEBUGASSERT(handle && wndo && ops && (unsigned)minor < 256);
- /* Allocate the driver structure */
- priv = (FAR struct nxterm_state_s *)kmm_zalloc(sizeof(struct nxterm_state_s));
- if (!priv)
- {
- gerr("ERROR: 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 nxterm_window_s));
- nxsem_init(&priv->exclsem, 0, 1);
- #ifdef CONFIG_DEBUG_GRAPHICS
- priv->holder = NO_HOLDER;
- #endif
- #ifdef CONFIG_NXTERM_NXKBDIN
- /* The waitsem semaphore is used for signaling and, hence, should not have
- * priority inheritance enabled.
- */
- nxsem_init(&priv->waitsem, 0, 0);
- nxsem_setprotocol(&priv->waitsem, SEM_PRIO_NONE);
- #endif
- /* Connect to the font cache for the configured font characteristics */
- priv->fcache = nxf_cache_connect(wndo->fontid, wndo->fcolor[0],
- wndo->wcolor[0], CONFIG_NXTERM_BPP,
- CONFIG_NXTERM_CACHESIZE);
- if (priv->fcache == NULL)
- {
- gerr("ERROR: Failed to connect to font cache for font ID %d: %d\n",
- wndo->fontid, errno);
- goto errout;
- }
- /* Get the handle of the font managed by the font cache */
- hfont = nxf_cache_getfonthandle(priv->fcache);
- if (hfont == NULL)
- {
- gerr("ERROR: Failed to get handlr for font ID %d: %d\n",
- wndo->fontid, errno);
- goto errout;
- }
- /* Get information about the font set being used and save this in the
- * state structure
- */
- fontset = nxf_getfontset(hfont);
- priv->fheight = fontset->mxheight;
- priv->fwidth = fontset->mxwidth;
- priv->spwidth = fontset->spwidth;
- /* Set up the text cache */
- priv->maxchars = CONFIG_NXTERM_MXCHARS;
- /* Clear the display */
- nxterm_clear(priv);
- /* Set the initial display position */
- nxterm_home(priv);
- /* Show the cursor */
- priv->cursor.code = CONFIG_NXTERM_CURSORCHAR;
- nxterm_showcursor(priv);
- /* Register the driver */
- snprintf(devname, NX_DEVNAME_SIZE, NX_DEVNAME_FORMAT, minor);
- ret = register_driver(devname, &g_nxterm_drvrops, 0666, priv);
- if (ret < 0)
- {
- gerr("ERROR: Failed to register %s\n", devname);
- }
- return (NXTERM)priv;
- errout:
- kmm_free(priv);
- return NULL;
- }
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