/**************************************************************************** * drivers/lcd/lcd_dev.c * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include #include #include #include #include #include #include #include #include /**************************************************************************** * Private Types ****************************************************************************/ /* This structure provides the state of the lcd_dev driver */ struct lcddev_dev_s { FAR struct lcd_dev_s *lcd_ptr; struct lcd_planeinfo_s planeinfo; }; /**************************************************************************** * Private Function Prototypes ****************************************************************************/ /* Character driver methods */ static int lcddev_open(FAR struct file *filep); static int lcddev_close(FAR struct file *filep); static int lcddev_ioctl(FAR struct file *filep, int cmd, unsigned long arg); /**************************************************************************** * Private Data ****************************************************************************/ static const struct file_operations lcddev_fops = { lcddev_open, /* open */ lcddev_close, /* close */ NULL, /* read */ NULL, /* write */ NULL, /* seek */ lcddev_ioctl, /* ioctl */ NULL /* poll */ #ifndef CONFIG_DISABLE_PSEUDOFS_OPERATIONS , NULL /* unlink */ #endif }; /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Name: lcddev_open ****************************************************************************/ static int lcddev_open(FAR struct file *filep) { /* Nothing to do */ return OK; } /**************************************************************************** * Name: lcddev_close ****************************************************************************/ static int lcddev_close(FAR struct file *filep) { /* Nothing to do */ return OK; } /**************************************************************************** * Name: lcddev_ioctl ****************************************************************************/ static int lcddev_ioctl(FAR struct file *filep, int cmd, unsigned long arg) { FAR struct lcddev_dev_s *priv; int ret = OK; priv = (FAR struct lcddev_dev_s *)filep->f_inode->i_private; switch (cmd) { case LCDDEVIO_GETRUN: { FAR struct lcddev_run_s *lcd_run = (FAR struct lcddev_run_s *)arg; ret = priv->planeinfo.getrun(lcd_run->row, lcd_run->col, lcd_run->data, lcd_run->npixels); } break; case LCDDEVIO_PUTRUN: { const FAR struct lcddev_run_s *lcd_run = (const FAR struct lcddev_run_s *)arg; ret = priv->planeinfo.putrun(lcd_run->row, lcd_run->col, lcd_run->data, lcd_run->npixels); } break; case LCDDEVIO_GETAREA: { FAR struct lcddev_area_s *lcd_area = (FAR struct lcddev_area_s *)arg; if (priv->planeinfo.getarea) { ret = priv->planeinfo.getarea(lcd_area->row_start, lcd_area->row_end, lcd_area->col_start, lcd_area->col_end, lcd_area->data); } else { /* Emulate getarea() using getrun() */ uint8_t *buf = lcd_area->data; size_t npixels = (lcd_area->col_end - lcd_area->col_start + 1); int row; for (row = lcd_area->row_start; row <= lcd_area->row_end; row++) { ret = priv->planeinfo.getrun(row, lcd_area->col_start, buf, npixels); if (ret < 0) { break; } buf += npixels * (priv->planeinfo.bpp >> 3); } } } break; case LCDDEVIO_PUTAREA: { const FAR struct lcddev_area_s *lcd_area = (const FAR struct lcddev_area_s *)arg; if (priv->planeinfo.putarea) { ret = priv->planeinfo.putarea(lcd_area->row_start, lcd_area->row_end, lcd_area->col_start, lcd_area->col_end, lcd_area->data); } else { /* Emulate putarea() using putrun() */ uint8_t *buf = lcd_area->data; size_t npixels = (lcd_area->col_end - lcd_area->col_start + 1); int row; for (row = lcd_area->row_start; row <= lcd_area->row_end; row++) { ret = priv->planeinfo.putrun(row, lcd_area->col_start, buf, npixels); if (ret < 0) { break; } buf += npixels * (priv->planeinfo.bpp >> 3); } } } break; case LCDDEVIO_GETPOWER: { *((FAR int *)arg) = priv->lcd_ptr->getpower(priv->lcd_ptr); } break; case LCDDEVIO_SETPOWER: { ret = priv->lcd_ptr->setpower(priv->lcd_ptr, (int)arg); } break; case LCDDEVIO_GETCONTRAST: { *((FAR int *)arg) = priv->lcd_ptr->getcontrast(priv->lcd_ptr); } break; case LCDDEVIO_SETCONTRAST: { ret = priv->lcd_ptr->setcontrast(priv->lcd_ptr, (unsigned int)arg); } break; case LCDDEVIO_GETPLANEINFO: { *((FAR struct lcd_planeinfo_s *)arg) = priv->planeinfo; } break; case LCDDEVIO_GETVIDEOINFO: { ret = priv->lcd_ptr->getvideoinfo(priv->lcd_ptr, (FAR struct fb_videoinfo_s *)arg); } break; case LCDDEVIO_SETPLANENO: { ret = priv->lcd_ptr->getplaneinfo(priv->lcd_ptr, (int)arg, &priv->planeinfo); } break; #ifdef CONFIG_FB_CMAP case LCDDEVIO_GETCMAP: { FAR struct fb_cmap_s *cmap = (FAR struct fb_cmap_s *)arg; ret = priv->lcd_ptr->getcmap(priv->lcd_ptr, cmap); } break; case LCDDEVIO_PUTCMAP: { FAR const struct fb_cmap_s *cmap = (FAR const struct fb_cmap_s *)arg; ret = priv->lcd_ptr->putcmap(priv->lcd_ptr, cmap); } break; #endif #ifdef CONFIG_FB_HWCURSOR case LCDDEVIO_GETCURSOR: { FAR struct fb_cursorattrib_s *attrib = (FAR struct fb_cursorattrib_s *)arg; ret = priv->lcd_ptr->getcursor(priv->lcd_ptr, attrib); } break; case LCDDEVIO_SETCURSOR: { FAR struct fb_setcursor_s *settings = (FAR struct fb_setcursor_s *)arg; ret = priv->lcd_ptr->setcursor(priv->lcd_ptr, settings); } break; #endif default: ret = -EINVAL; break; } return ret; } /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: lcddev_register * * Description: * Register the LCD character driver as /dev/lcdN. * * Input Parameters: * devno - The LCD device number. * * Returned Value: * Zero (OK) is returned on success. Otherwise a negated errno value is * returned to indicate the nature of the failure. * ****************************************************************************/ int lcddev_register(int devno) { FAR struct lcddev_dev_s *priv; int ret = OK; char devname[16]; /* Allocate a new lcd_dev driver instance */ priv = (FAR struct lcddev_dev_s *)kmm_zalloc(sizeof(struct lcddev_dev_s)); if (!priv) { return -ENOMEM; } priv->lcd_ptr = board_lcd_getdev(devno); ret = priv->lcd_ptr->getplaneinfo(priv->lcd_ptr, 0, &priv->planeinfo); if (ret < 0) { goto err; } snprintf(devname, sizeof(devname), "/dev/lcd%i", devno); ret = register_driver(devname, &lcddev_fops, 0666, priv); if (ret < 0) { goto err; } return ret; err: kmm_free(priv); return ret; }