457 lines
12 KiB
C
457 lines
12 KiB
C
/****************************************************************************
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* drivers/lcd/lcd_dev.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdbool.h>
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#include <string.h>
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#include <poll.h>
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#include <errno.h>
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#include <debug.h>
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#include <stdio.h>
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#include <nuttx/kmalloc.h>
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#include <nuttx/signal.h>
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#include <nuttx/fs/fs.h>
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#include <nuttx/irq.h>
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#include <nuttx/board.h>
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#include <nuttx/lcd/lcd_dev.h>
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/* This structure provides the state of the lcd_dev driver */
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struct lcddev_dev_s
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{
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FAR struct lcd_dev_s *lcd_ptr;
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struct lcd_planeinfo_s planeinfo;
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mutex_t lock;
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int16_t crefs;
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/* Character driver methods */
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static int lcddev_open(FAR struct file *filep);
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static int lcddev_close(FAR struct file *filep);
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static int lcddev_ioctl(FAR struct file *filep, int cmd,
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unsigned long arg);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const struct file_operations g_lcddev_fops =
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{
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lcddev_open, /* open */
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lcddev_close, /* close */
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NULL, /* read */
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NULL, /* write */
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NULL, /* seek */
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lcddev_ioctl, /* ioctl */
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: lcddev_open
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****************************************************************************/
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static int lcddev_open(FAR struct file *filep)
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{
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FAR struct lcddev_dev_s *priv;
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int ret;
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priv = filep->f_inode->i_private;
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ret = nxmutex_lock(&priv->lock);
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if (ret < 0)
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{
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return ret;
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}
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if (priv->crefs == 0)
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{
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if (priv->lcd_ptr->open != NULL &&
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(ret = priv->lcd_ptr->open(priv->lcd_ptr)) < 0)
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{
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goto err_lcd;
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}
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}
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priv->crefs++;
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DEBUGASSERT(priv->crefs > 0);
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nxmutex_unlock(&priv->lock);
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return OK;
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err_lcd:
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nxmutex_unlock(&priv->lock);
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return ret;
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}
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/****************************************************************************
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* Name: lcddev_close
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****************************************************************************/
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static int lcddev_close(FAR struct file *filep)
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{
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FAR struct lcddev_dev_s *priv;
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int ret;
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priv = filep->f_inode->i_private;
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ret = nxmutex_lock(&priv->lock);
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if (ret < 0)
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{
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return ret;
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}
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if (priv->crefs == 1)
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{
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if (priv->lcd_ptr->close != NULL)
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{
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ret = priv->lcd_ptr->close(priv->lcd_ptr);
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}
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}
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if (ret >= 0)
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{
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DEBUGASSERT(priv->crefs > 0);
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priv->crefs--;
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}
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nxmutex_unlock(&priv->lock);
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return ret;
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}
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/****************************************************************************
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* Name: lcddev_ioctl
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****************************************************************************/
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static int lcddev_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
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{
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FAR struct lcddev_dev_s *priv;
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int ret = OK;
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priv = filep->f_inode->i_private;
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switch (cmd)
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{
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case LCDDEVIO_GETRUN:
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{
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FAR struct lcddev_run_s *lcd_run =
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(FAR struct lcddev_run_s *)arg;
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ret = priv->planeinfo.getrun(priv->lcd_ptr, lcd_run->row,
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lcd_run->col, lcd_run->data,
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lcd_run->npixels);
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}
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break;
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case LCDDEVIO_PUTRUN:
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{
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FAR const struct lcddev_run_s *lcd_run =
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(FAR const struct lcddev_run_s *)arg;
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ret = priv->planeinfo.putrun(priv->lcd_ptr,
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lcd_run->row, lcd_run->col,
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lcd_run->data, lcd_run->npixels);
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}
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break;
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case LCDDEVIO_GETAREA:
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{
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FAR struct lcddev_area_s *lcd_area =
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(FAR struct lcddev_area_s *)arg;
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size_t cols = lcd_area->col_end - lcd_area->col_start + 1;
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size_t pixel_size = priv->planeinfo.bpp > 1 ?
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priv->planeinfo.bpp >> 3 : 1;
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size_t row_size = lcd_area->stride > 0 ?
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lcd_area->stride : cols * pixel_size;
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if (priv->planeinfo.getarea)
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{
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ret = priv->planeinfo.getarea(priv->lcd_ptr,
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lcd_area->row_start,
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lcd_area->row_end,
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lcd_area->col_start,
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lcd_area->col_end,
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lcd_area->data,
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row_size);
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}
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else
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{
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/* Emulate getarea() using getrun() */
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uint8_t *buf = lcd_area->data;
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int row;
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for (row = lcd_area->row_start; row <= lcd_area->row_end; row++)
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{
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ret = priv->planeinfo.getrun(priv->lcd_ptr, row,
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lcd_area->col_start, buf,
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cols);
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if (ret < 0)
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{
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break;
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}
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buf += row_size;
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}
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}
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}
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break;
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case LCDDEVIO_PUTAREA:
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{
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FAR const struct lcddev_area_s *lcd_area =
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(FAR const struct lcddev_area_s *)arg;
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size_t cols = lcd_area->col_end - lcd_area->col_start + 1;
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size_t pixel_size = priv->planeinfo.bpp > 1 ?
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priv->planeinfo.bpp >> 3 : 1;
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size_t row_size = lcd_area->stride > 0 ?
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lcd_area->stride : cols * pixel_size;
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if (priv->planeinfo.putarea)
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{
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ret = priv->planeinfo.putarea(priv->lcd_ptr,
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lcd_area->row_start,
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lcd_area->row_end,
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lcd_area->col_start,
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lcd_area->col_end,
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lcd_area->data,
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row_size);
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}
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else
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{
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/* Emulate putarea() using putrun() */
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uint8_t *buf = lcd_area->data;
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int row;
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for (row = lcd_area->row_start; row <= lcd_area->row_end; row++)
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{
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ret = priv->planeinfo.putrun(priv->lcd_ptr, row,
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lcd_area->col_start, buf,
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cols);
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if (ret < 0)
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{
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break;
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}
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buf += row_size;
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}
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}
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}
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break;
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case LCDDEVIO_GETPOWER:
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{
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*((FAR int *)arg) = priv->lcd_ptr->getpower(priv->lcd_ptr);
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}
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break;
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case LCDDEVIO_SETPOWER:
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{
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ret = priv->lcd_ptr->setpower(priv->lcd_ptr, (int)arg);
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}
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break;
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case LCDDEVIO_GETCONTRAST:
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{
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*((FAR int *)arg) = priv->lcd_ptr->getcontrast(priv->lcd_ptr);
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}
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break;
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case LCDDEVIO_SETCONTRAST:
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{
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ret = priv->lcd_ptr->setcontrast(priv->lcd_ptr, (unsigned int)arg);
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}
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break;
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case LCDDEVIO_GETPLANEINFO:
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{
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*((FAR struct lcd_planeinfo_s *)arg) = priv->planeinfo;
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}
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break;
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case LCDDEVIO_GETVIDEOINFO:
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{
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ret = priv->lcd_ptr->getvideoinfo(priv->lcd_ptr,
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(FAR struct fb_videoinfo_s *)arg);
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}
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break;
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case LCDDEVIO_SETPLANENO:
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{
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ret = priv->lcd_ptr->getplaneinfo(priv->lcd_ptr, (int)arg,
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&priv->planeinfo);
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}
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break;
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#ifdef CONFIG_FB_CMAP
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case LCDDEVIO_GETCMAP:
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{
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FAR struct fb_cmap_s *cmap = (FAR struct fb_cmap_s *)arg;
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ret = priv->lcd_ptr->getcmap(priv->lcd_ptr, cmap);
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}
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break;
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case LCDDEVIO_PUTCMAP:
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{
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FAR const struct fb_cmap_s *cmap = (FAR const struct fb_cmap_s *)arg;
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ret = priv->lcd_ptr->putcmap(priv->lcd_ptr, cmap);
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}
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break;
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#endif
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#ifdef CONFIG_FB_HWCURSOR
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case LCDDEVIO_GETCURSOR:
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{
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FAR struct fb_cursorattrib_s *attrib =
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(FAR struct fb_cursorattrib_s *)arg;
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ret = priv->lcd_ptr->getcursor(priv->lcd_ptr, attrib);
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}
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break;
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case LCDDEVIO_SETCURSOR:
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{
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FAR struct fb_setcursor_s *settings =
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(FAR struct fb_setcursor_s *)arg;
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ret = priv->lcd_ptr->setcursor(priv->lcd_ptr, settings);
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}
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break;
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#endif
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case LCDDEVIO_SETFRAMERATE:
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{
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ret = priv->lcd_ptr->setframerate(priv->lcd_ptr, (int)arg);
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}
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break;
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case LCDDEVIO_GETFRAMERATE:
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{
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*((FAR int *)arg) = priv->lcd_ptr->getframerate(priv->lcd_ptr);
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}
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break;
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case LCDDEVIO_GETAREAALIGN:
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{
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FAR struct lcddev_area_align_s *area_align =
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(FAR struct lcddev_area_align_s *)arg;
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if (priv->lcd_ptr->getareaalign == NULL)
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{
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area_align->row_start_align = 1;
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area_align->height_align = 1;
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area_align->col_start_align = 1;
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area_align->width_align = 1;
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area_align->buf_align = sizeof(uintptr_t);
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}
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else
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{
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ret = priv->lcd_ptr->getareaalign(priv->lcd_ptr, area_align);
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}
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}
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break;
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default:
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{
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if (priv->lcd_ptr->ioctl)
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{
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ret = priv->lcd_ptr->ioctl(priv->lcd_ptr, cmd, arg);
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}
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else
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{
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gerr("ERROR: Unsupported IOCTL command: %d\n", cmd);
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ret = -ENOTTY;
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}
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}
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break;
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}
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return ret;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: lcddev_register
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*
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* Description:
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* Register the LCD character driver as /dev/lcdN.
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*
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* Input Parameters:
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* devno - The LCD device number.
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*
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* Returned Value:
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* Zero (OK) is returned on success. Otherwise a negated errno value is
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* returned to indicate the nature of the failure.
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*
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****************************************************************************/
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int lcddev_register(int devno)
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{
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FAR struct lcddev_dev_s *priv;
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int ret = OK;
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char devname[16];
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/* Allocate a new lcd_dev driver instance */
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priv = kmm_zalloc(sizeof(struct lcddev_dev_s));
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if (!priv)
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{
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return -ENOMEM;
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}
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nxmutex_init(&priv->lock);
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priv->lcd_ptr = board_lcd_getdev(devno);
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if (!priv->lcd_ptr)
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{
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ret = -ENODEV;
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goto err;
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}
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ret = priv->lcd_ptr->getplaneinfo(priv->lcd_ptr, 0, &priv->planeinfo);
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if (ret < 0)
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{
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goto err;
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}
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snprintf(devname, sizeof(devname), "/dev/lcd%i", devno);
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ret = register_driver(devname, &g_lcddev_fops, 0666, priv);
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if (ret < 0)
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{
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goto err;
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}
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return ret;
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err:
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nxmutex_destroy(&priv->lock);
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kmm_free(priv);
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return ret;
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}
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