83c2a7f54e
Some devices need to clear the fb panbuf when waking up from sleep to avoid outputting residual buffers from before sleeping Signed-off-by: rongyichang <rongyichang@xiaomi.com>
1719 lines
45 KiB
C
1719 lines
45 KiB
C
/****************************************************************************
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* drivers/video/fb.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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/* Framebuffer character driver */
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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 <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include <debug.h>
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#include <errno.h>
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#include <poll.h>
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#include <nuttx/kmalloc.h>
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#include <nuttx/fs/fs.h>
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#include <nuttx/fs/ioctl.h>
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#include <nuttx/video/fb.h>
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#include <nuttx/clock.h>
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#include <nuttx/wdog.h>
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#include <nuttx/mm/circbuf.h>
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/****************************************************************************
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* Pre-processor definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct fb_priv_s
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{
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/* Supports a singly linked list */
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FAR struct fb_priv_s *flink;
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int overlay; /* Overlay number */
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/* Polling fds of waiting threads */
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FAR struct pollfd *fds[CONFIG_VIDEO_FB_NPOLLWAITERS];
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#ifdef CONFIG_FB_SYNC
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sem_t wait;
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#endif
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};
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struct fb_paninfo_s
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{
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FAR struct circbuf_s buf; /* Pan buffer queued list */
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struct wdog_s wdog; /* VSync offset timer */
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FAR struct fb_chardev_s *dev;
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};
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/* This structure defines one framebuffer device. Note that which is
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* everything in this structure is constant data set up and initialization
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* time. Therefore, no there is requirement for serialized access to this
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* structure.
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*/
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struct fb_chardev_s
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{
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FAR struct fb_vtable_s *vtable; /* Framebuffer interface */
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uint8_t plane; /* Video plan number */
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clock_t vsyncoffset; /* VSync offset ticks */
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FAR struct fb_priv_s *head;
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FAR struct fb_paninfo_s *paninfo; /* Pan info array */
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size_t paninfo_count; /* Pan info count */
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};
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struct fb_panelinfo_s
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{
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FAR void *fbmem; /* Start of frame buffer memory */
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size_t fblen; /* Size of the framebuffer */
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uint8_t fbcount; /* Count of frame buffer */
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uint8_t bpp; /* Bits per pixel */
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static FAR struct circbuf_s *fb_get_panbuf(FAR struct fb_chardev_s *fb,
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int overlay);
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static int fb_add_paninfo(FAR struct fb_chardev_s *fb,
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FAR const union fb_paninfo_u *info,
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int overlay);
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static int fb_clear_paninfo(FAR struct fb_chardev_s *fb,
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int overlay);
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static int fb_open(FAR struct file *filep);
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static int fb_close(FAR struct file *filep);
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static ssize_t fb_read(FAR struct file *filep, FAR char *buffer,
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size_t buflen);
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static ssize_t fb_write(FAR struct file *filep, FAR const char *buffer,
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size_t buflen);
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static off_t fb_seek(FAR struct file *filep, off_t offset, int whence);
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static int fb_ioctl(FAR struct file *filep, int cmd, unsigned long arg);
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static int fb_mmap(FAR struct file *filep,
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FAR struct mm_map_entry_s *map);
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static int fb_poll(FAR struct file *filep, FAR struct pollfd *fds,
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bool setup);
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static int fb_get_panelinfo(FAR struct fb_chardev_s *fb,
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FAR struct fb_panelinfo_s *panelinfo,
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int overlay);
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static int fb_get_planeinfo(FAR struct fb_chardev_s *fb,
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FAR struct fb_planeinfo_s *pinfo,
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uint8_t display);
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#ifdef CONFIG_FB_SYNC
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static int fb_sem_wait(FAR struct fb_chardev_s *fb,
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FAR struct fb_priv_s *priv,
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int overlay);
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static void fb_sem_post(FAR struct fb_chardev_s *fb, int overlay);
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#endif
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#ifdef CONFIG_BUILD_KERNEL
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static int fb_munmap(FAR struct task_group_s *group,
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FAR struct mm_map_entry_s *entry,
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FAR void *start, size_t length);
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const struct file_operations g_fb_fops =
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{
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fb_open, /* open */
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fb_close, /* close */
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fb_read, /* read */
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fb_write, /* write */
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fb_seek, /* seek */
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fb_ioctl, /* ioctl */
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fb_mmap, /* mmap */
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NULL, /* truncate */
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fb_poll /* poll */
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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: fb_get_panbuf
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****************************************************************************/
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static FAR struct circbuf_s *fb_get_panbuf(FAR struct fb_chardev_s *fb,
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int overlay)
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{
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int id = overlay + 1;
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DEBUGASSERT(id >= 0 && id < fb->paninfo_count);
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return &(fb->paninfo[id].buf);
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}
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/****************************************************************************
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* Name: fb_add_paninfo
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****************************************************************************/
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static int fb_add_paninfo(FAR struct fb_chardev_s *fb,
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FAR const union fb_paninfo_u *info,
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int overlay)
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{
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FAR struct circbuf_s *panbuf;
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irqstate_t flags;
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ssize_t ret;
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DEBUGASSERT(fb != NULL);
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panbuf = fb_get_panbuf(fb, overlay);
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if (panbuf == NULL)
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{
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return -EINVAL;
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}
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/* Disable the interrupt when writing to the queue to
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* prevent it from being modified by the interrupted
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* thread during the writing process.
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*/
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flags = enter_critical_section();
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/* Write planeinfo information to the queue. */
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ret = circbuf_write(panbuf, info, sizeof(union fb_paninfo_u));
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if (ret != sizeof(union fb_paninfo_u))
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{
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gwarn("WARNING: circbuf_write(panbuf) failed\n");
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}
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/* Re-enable interrupts */
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leave_critical_section(flags);
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return ret <= 0 ? -ENOSPC : OK;
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}
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/****************************************************************************
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* Name: fb_clear_paninfo
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****************************************************************************/
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static int fb_clear_paninfo(FAR struct fb_chardev_s *fb,
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int overlay)
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{
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FAR struct circbuf_s *panbuf;
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irqstate_t flags;
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DEBUGASSERT(fb != NULL);
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panbuf = fb_get_panbuf(fb, overlay);
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if (panbuf == NULL)
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{
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return -EINVAL;
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}
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/* Disable the interrupt when writing to the queue to
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* prevent it from being modified by the interrupted
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* thread during the writing process.
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*/
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flags = enter_critical_section();
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circbuf_reset(panbuf);
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/* Re-enable interrupts */
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leave_critical_section(flags);
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return OK;
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}
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/****************************************************************************
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* Name: fb_open
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****************************************************************************/
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static int fb_open(FAR struct file *filep)
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{
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FAR struct inode *inode;
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FAR struct fb_chardev_s *fb;
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FAR struct fb_priv_s *priv;
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irqstate_t flags;
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int ret;
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inode = filep->f_inode;
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fb = inode->i_private;
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DEBUGASSERT(fb->vtable != NULL);
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priv = kmm_zalloc(sizeof(*priv));
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if (priv == NULL)
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{
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return -ENOMEM;
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}
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flags = enter_critical_section();
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if (fb->head == NULL)
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{
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if (fb->vtable->open != NULL &&
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(ret = fb->vtable->open(fb->vtable)) < 0)
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{
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goto err_fb;
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}
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}
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priv->overlay = FB_NO_OVERLAY;
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#ifdef CONFIG_FB_SYNC
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nxsem_init(&priv->wait, 0, 0);
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#endif
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/* Attach the open structure to the device */
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priv->flink = fb->head;
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fb->head = priv;
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filep->f_priv = priv;
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leave_critical_section(flags);
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return 0;
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err_fb:
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leave_critical_section(flags);
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kmm_free(priv);
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return ret;
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}
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/****************************************************************************
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* Name: fb_close
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****************************************************************************/
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static int fb_close(FAR struct file *filep)
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{
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FAR struct inode *inode;
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FAR struct fb_chardev_s *fb;
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FAR struct fb_priv_s *priv;
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FAR struct fb_priv_s *curr;
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FAR struct fb_priv_s *prev;
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irqstate_t flags;
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int ret;
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inode = filep->f_inode;
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fb = inode->i_private;
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priv = filep->f_priv;
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DEBUGASSERT(fb->vtable != NULL && priv != NULL);
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flags = enter_critical_section();
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DEBUGASSERT(fb->head);
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if (fb->head->flink == NULL)
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{
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if (fb->vtable->close != NULL)
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{
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ret = fb->vtable->close(fb->vtable);
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if (ret < 0)
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{
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leave_critical_section(flags);
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return ret;
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}
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}
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}
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/* Find the open structure in the list of
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* open structures for the device.
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*/
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for (prev = NULL, curr = fb->head;
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curr && curr != priv;
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prev = curr, curr = curr->flink);
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DEBUGASSERT(curr);
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/* Remove the structure from the device */
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if (prev)
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{
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prev->flink = priv->flink;
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}
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else
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{
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fb->head = priv->flink;
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}
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leave_critical_section(flags);
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#ifdef CONFIG_FB_SYNC
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nxsem_destroy(&priv->wait);
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#endif
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kmm_free(priv);
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return OK;
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}
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/****************************************************************************
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* Name: fb_read
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****************************************************************************/
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static ssize_t fb_read(FAR struct file *filep, FAR char *buffer, size_t len)
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{
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FAR struct inode *inode;
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FAR struct fb_chardev_s *fb;
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FAR struct fb_priv_s *priv;
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struct fb_panelinfo_s panelinfo;
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size_t start;
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size_t end;
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size_t size;
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int ret;
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ginfo("len: %u\n", (unsigned int)len);
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/* Get the framebuffer instance */
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inode = filep->f_inode;
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fb = inode->i_private;
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priv = filep->f_priv;
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DEBUGASSERT(fb->vtable != NULL && priv != NULL);
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/* Get panel info */
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ret = fb_get_panelinfo(fb, &panelinfo, priv->overlay);
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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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/* Get the start and size of the transfer */
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start = filep->f_pos;
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if (start >= panelinfo.fblen)
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{
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return 0; /* Return end-of-file */
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}
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end = start + len;
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if (end >= panelinfo.fblen)
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{
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end = panelinfo.fblen;
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}
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size = end - start;
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/* And transfer the data from the frame buffer */
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memcpy(buffer, panelinfo.fbmem + start, size);
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filep->f_pos += size;
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return size;
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}
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/****************************************************************************
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* Name: fb_write
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****************************************************************************/
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static ssize_t fb_write(FAR struct file *filep, FAR const char *buffer,
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size_t len)
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{
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FAR struct inode *inode;
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FAR struct fb_chardev_s *fb;
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FAR struct fb_priv_s *priv;
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struct fb_panelinfo_s panelinfo;
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size_t start;
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size_t end;
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size_t size;
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int ret;
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ginfo("len: %u\n", (unsigned int)len);
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/* Get the framebuffer instance */
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inode = filep->f_inode;
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fb = inode->i_private;
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priv = filep->f_priv;
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DEBUGASSERT(fb->vtable != NULL && priv != NULL);
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/* Get panel info */
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ret = fb_get_panelinfo(fb, &panelinfo, priv->overlay);
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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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/* Get the start and size of the transfer */
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start = filep->f_pos;
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if (start >= panelinfo.fblen)
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{
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return -EFBIG; /* Cannot extend the framebuffer */
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}
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end = start + len;
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if (end >= panelinfo.fblen)
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{
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end = panelinfo.fblen;
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}
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size = end - start;
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/* And transfer the data into the frame buffer */
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memcpy(panelinfo.fbmem + start, buffer, size);
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filep->f_pos += size;
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return size;
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}
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|
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/****************************************************************************
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|
* Name: fb_seek
|
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*
|
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* Description:
|
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* Seek the logical file pointer to the specified position. The offset
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* is in units of pixels, with offset zero being the beginning of the
|
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* framebuffer.
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*
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****************************************************************************/
|
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|
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static off_t fb_seek(FAR struct file *filep, off_t offset, int whence)
|
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{
|
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FAR struct inode *inode;
|
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FAR struct fb_chardev_s *fb;
|
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FAR struct fb_priv_s *priv;
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struct fb_panelinfo_s panelinfo;
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off_t newpos;
|
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int ret;
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ginfo("offset: %u whence: %d\n", (unsigned int)offset, whence);
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|
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/* Get the framebuffer instance */
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|
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inode = filep->f_inode;
|
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fb = inode->i_private;
|
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priv = filep->f_priv;
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DEBUGASSERT(fb->vtable != NULL && priv != NULL);
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|
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/* Determine the new, requested file position */
|
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|
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switch (whence)
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{
|
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case SEEK_CUR:
|
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newpos = filep->f_pos + offset;
|
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break;
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|
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case SEEK_SET:
|
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newpos = offset;
|
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break;
|
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|
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case SEEK_END:
|
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|
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/* Get panel info */
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|
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ret = fb_get_panelinfo(fb, &panelinfo, priv->overlay);
|
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|
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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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|
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newpos = panelinfo.fblen + offset;
|
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break;
|
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|
|
default:
|
|
|
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/* Return EINVAL if the whence argument is invalid */
|
|
|
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return -EINVAL;
|
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}
|
|
|
|
/* Opengroup.org:
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|
*
|
|
* "The lseek() function shall allow the file offset to be set beyond the
|
|
* end of the existing data in the file. If data is later written at this
|
|
* point, subsequent reads of data in the gap shall return bytes with the
|
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* value 0 until data is actually written into the gap."
|
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*
|
|
* We can conform to the first part, but not the second. Return EINVAL if
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* "...the resulting file offset would be negative for a regular file,
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* block special file, or directory."
|
|
*/
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|
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if (newpos >= 0)
|
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{
|
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filep->f_pos = newpos;
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ret = newpos;
|
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}
|
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else
|
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{
|
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ret = -EINVAL;
|
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}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: fb_ioctl
|
|
*
|
|
* Description:
|
|
* The standard ioctl method.
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int fb_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
|
|
{
|
|
FAR struct inode *inode;
|
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FAR struct fb_chardev_s *fb;
|
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int ret = OK;
|
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|
|
ginfo("cmd: %d arg: %ld\n", cmd, arg);
|
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|
|
/* Get the framebuffer instance */
|
|
|
|
inode = filep->f_inode;
|
|
fb = inode->i_private;
|
|
|
|
/* Process the IOCTL command */
|
|
|
|
switch (cmd)
|
|
{
|
|
case FBIOGET_VIDEOINFO: /* Get color plane info */
|
|
{
|
|
FAR struct fb_videoinfo_s *vinfo =
|
|
(FAR struct fb_videoinfo_s *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(vinfo != 0 && fb->vtable != NULL &&
|
|
fb->vtable->getvideoinfo != NULL);
|
|
ret = fb->vtable->getvideoinfo(fb->vtable, vinfo);
|
|
}
|
|
break;
|
|
|
|
case FBIOGET_PLANEINFO: /* Get video plane info */
|
|
{
|
|
FAR struct fb_planeinfo_s *pinfo =
|
|
(FAR struct fb_planeinfo_s *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(pinfo != 0);
|
|
ret = fb_get_planeinfo(fb, pinfo, pinfo->display);
|
|
}
|
|
break;
|
|
|
|
#ifdef CONFIG_FB_CMAP
|
|
case FBIOGET_CMAP: /* Get RGB color mapping */
|
|
{
|
|
FAR struct fb_cmap_s *cmap =
|
|
(FAR struct fb_cmap_s *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(cmap != 0 && fb->vtable != NULL &&
|
|
fb->vtable->getcmap != NULL);
|
|
ret = fb->vtable->getcmap(fb->vtable, cmap);
|
|
}
|
|
break;
|
|
|
|
case FBIOPUT_CMAP: /* Put RGB color mapping */
|
|
{
|
|
FAR const struct fb_cmap_s *cmap =
|
|
(FAR struct fb_cmap_s *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(cmap != 0 && fb->vtable != NULL &&
|
|
fb->vtable->putcmap != NULL);
|
|
ret = fb->vtable->putcmap(fb->vtable, cmap);
|
|
}
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_FB_HWCURSOR
|
|
case FBIOGET_CURSOR: /* Get cursor attributes */
|
|
{
|
|
FAR struct fb_cursorattrib_s *attrib =
|
|
(FAR struct fb_cursorattrib_s *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(attrib != 0 && fb->vtable != NULL &&
|
|
fb->vtable->getcursor != NULL);
|
|
ret = fb->vtable->getcursor(fb->vtable, attrib);
|
|
}
|
|
break;
|
|
|
|
case FBIOPUT_CURSOR: /* Set cursor attributes */
|
|
{
|
|
FAR struct fb_setcursor_s *cursor =
|
|
(FAR struct fb_setcursor_s *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(cursor != 0 && fb->vtable != NULL &&
|
|
fb->vtable->setcursor != NULL);
|
|
ret = fb->vtable->setcursor(fb->vtable, cursor);
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
#ifdef CONFIG_FB_UPDATE
|
|
case FBIO_UPDATE: /* Update the modified framebuffer data */
|
|
{
|
|
struct fb_area_s *area = (FAR struct fb_area_s *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(fb->vtable != NULL && fb->vtable->updatearea != NULL);
|
|
ret = fb->vtable->updatearea(fb->vtable, area);
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
#ifdef CONFIG_FB_SYNC
|
|
case FBIO_WAITFORVSYNC: /* Wait upon vertical sync */
|
|
{
|
|
FAR struct fb_priv_s *priv = (FAR struct fb_priv_s *)filep->f_priv;
|
|
|
|
DEBUGASSERT(fb->vtable != NULL);
|
|
if (fb->vtable->waitforvsync != NULL)
|
|
{
|
|
ret = fb->vtable->waitforvsync(fb->vtable);
|
|
break;
|
|
}
|
|
|
|
ret = fb_sem_wait(fb, priv, priv->overlay);
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
#ifdef CONFIG_FB_OVERLAY
|
|
case FBIO_SELECT_OVERLAY: /* Select video overlay */
|
|
{
|
|
struct fb_overlayinfo_s oinfo;
|
|
FAR struct fb_priv_s *priv = filep->f_priv;
|
|
|
|
DEBUGASSERT(priv != NULL && fb->vtable != NULL &&
|
|
fb->vtable->getoverlayinfo != NULL);
|
|
if (arg != FB_NO_OVERLAY)
|
|
{
|
|
memset(&oinfo, 0, sizeof(oinfo));
|
|
ret = fb->vtable->getoverlayinfo(fb->vtable, arg, &oinfo);
|
|
}
|
|
|
|
if (ret >= 0)
|
|
{
|
|
priv->overlay = arg;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case FBIOGET_OVERLAYINFO: /* Get video overlay info */
|
|
{
|
|
FAR struct fb_overlayinfo_s *oinfo =
|
|
(FAR struct fb_overlayinfo_s *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(oinfo != 0 && fb->vtable != NULL &&
|
|
fb->vtable->getoverlayinfo != NULL);
|
|
ret = fb->vtable->getoverlayinfo(fb->vtable,
|
|
oinfo->overlay, oinfo);
|
|
}
|
|
break;
|
|
|
|
case FBIOSET_TRANSP: /* Set video overlay transparency */
|
|
{
|
|
FAR struct fb_overlayinfo_s *oinfo =
|
|
(FAR struct fb_overlayinfo_s *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(oinfo != 0 && fb->vtable != NULL &&
|
|
fb->vtable->settransp != NULL);
|
|
ret = fb->vtable->settransp(fb->vtable, oinfo);
|
|
}
|
|
break;
|
|
|
|
case FBIOSET_CHROMAKEY: /* Set video overlay chroma key */
|
|
{
|
|
FAR struct fb_overlayinfo_s *oinfo =
|
|
(FAR struct fb_overlayinfo_s *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(oinfo != 0 && fb->vtable != NULL &&
|
|
fb->vtable->setchromakey != NULL);
|
|
ret = fb->vtable->setchromakey(fb->vtable, oinfo);
|
|
}
|
|
break;
|
|
|
|
case FBIOSET_COLOR: /* Set video overlay color */
|
|
{
|
|
FAR struct fb_overlayinfo_s *oinfo =
|
|
(FAR struct fb_overlayinfo_s *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(oinfo != 0 && fb->vtable != NULL &&
|
|
fb->vtable->setcolor != NULL);
|
|
ret = fb->vtable->setcolor(fb->vtable, oinfo);
|
|
}
|
|
break;
|
|
|
|
case FBIOSET_BLANK: /* Blank or unblank video overlay */
|
|
{
|
|
FAR struct fb_overlayinfo_s *oinfo =
|
|
(FAR struct fb_overlayinfo_s *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(oinfo != 0 && fb->vtable != NULL &&
|
|
fb->vtable->setblank != NULL);
|
|
ret = fb->vtable->setblank(fb->vtable, oinfo);
|
|
}
|
|
break;
|
|
|
|
case FBIOSET_AREA: /* Set active video overlay area */
|
|
{
|
|
FAR struct fb_overlayinfo_s *oinfo =
|
|
(FAR struct fb_overlayinfo_s *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(oinfo != 0 && fb->vtable != NULL &&
|
|
fb->vtable->setarea != NULL);
|
|
ret = fb->vtable->setarea(fb->vtable, oinfo);
|
|
}
|
|
break;
|
|
|
|
case FBIOSET_DESTAREA: /* Set destination area on the primary FB */
|
|
{
|
|
FAR struct fb_overlayinfo_s *oinfo =
|
|
(FAR struct fb_overlayinfo_s *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(oinfo != 0 && fb->vtable != NULL &&
|
|
fb->vtable->setdestarea != NULL);
|
|
ret = fb->vtable->setdestarea(fb->vtable, oinfo);
|
|
}
|
|
break;
|
|
|
|
#ifdef CONFIG_FB_OVERLAY_BLIT
|
|
case FBIOSET_BLIT: /* Blit operation between video overlays */
|
|
{
|
|
FAR struct fb_overlayblit_s *blit =
|
|
(FAR struct fb_overlayblit_s *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(blit != 0 && fb->vtable != NULL &&
|
|
fb->vtable->blit != NULL);
|
|
ret = fb->vtable->blit(fb->vtable, blit);
|
|
}
|
|
break;
|
|
|
|
case FBIOSET_BLEND: /* Blend operation between video overlays */
|
|
{
|
|
FAR struct fb_overlayblend_s *blend =
|
|
(FAR struct fb_overlayblend_s *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(blend != 0 && fb->vtable != NULL &&
|
|
fb->vtable->blend != NULL);
|
|
ret = fb->vtable->blend(fb->vtable, blend);
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
case FBIOPAN_OVERLAY:
|
|
{
|
|
FAR struct fb_overlayinfo_s *oinfo =
|
|
(FAR struct fb_overlayinfo_s *)((uintptr_t)arg);
|
|
union fb_paninfo_u paninfo;
|
|
|
|
DEBUGASSERT(oinfo != 0 && fb->vtable != NULL);
|
|
|
|
memcpy(&paninfo, oinfo, sizeof(*oinfo));
|
|
|
|
if (fb->vtable->panoverlay != NULL)
|
|
{
|
|
fb->vtable->panoverlay(fb->vtable, oinfo);
|
|
}
|
|
|
|
ret = fb_add_paninfo(fb, &paninfo, oinfo->overlay);
|
|
}
|
|
break;
|
|
|
|
#endif /* CONFIG_FB_OVERLAY */
|
|
|
|
case FBIOSET_POWER:
|
|
{
|
|
DEBUGASSERT(fb->vtable != NULL &&
|
|
fb->vtable->setpower != NULL);
|
|
ret = fb->vtable->setpower(fb->vtable, (int)arg);
|
|
}
|
|
break;
|
|
|
|
case FBIOGET_POWER:
|
|
{
|
|
FAR int *power = (FAR int *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(power != NULL && fb->vtable != NULL &&
|
|
fb->vtable->getpower != NULL);
|
|
*(power) = fb->vtable->getpower(fb->vtable);
|
|
}
|
|
break;
|
|
|
|
case FBIOGET_FRAMERATE:
|
|
{
|
|
FAR int *rate = (FAR int *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(rate != NULL && fb->vtable != NULL &&
|
|
fb->vtable->getframerate != NULL);
|
|
*(rate) = fb->vtable->getframerate(fb->vtable);
|
|
}
|
|
break;
|
|
|
|
case FBIOSET_FRAMERATE:
|
|
{
|
|
DEBUGASSERT(fb->vtable != NULL &&
|
|
fb->vtable->setframerate != NULL);
|
|
ret = fb->vtable->setframerate(fb->vtable, (int)arg);
|
|
}
|
|
break;
|
|
|
|
case FBIOPAN_DISPLAY:
|
|
{
|
|
FAR struct fb_planeinfo_s *pinfo =
|
|
(FAR struct fb_planeinfo_s *)((uintptr_t)arg);
|
|
union fb_paninfo_u paninfo;
|
|
|
|
DEBUGASSERT(pinfo != NULL && fb->vtable != NULL);
|
|
|
|
memcpy(&paninfo, pinfo, sizeof(*pinfo));
|
|
|
|
if (fb->vtable->pandisplay != NULL)
|
|
{
|
|
fb->vtable->pandisplay(fb->vtable, pinfo);
|
|
}
|
|
|
|
ret = fb_add_paninfo(fb, &paninfo, FB_NO_OVERLAY);
|
|
}
|
|
break;
|
|
|
|
case FBIOPAN_CLEAR:
|
|
{
|
|
ret = fb_clear_paninfo(fb, (int)arg);
|
|
}
|
|
break;
|
|
|
|
case FBIOSET_VSYNCOFFSET:
|
|
{
|
|
fb->vsyncoffset = USEC2TICK(arg);
|
|
}
|
|
break;
|
|
|
|
case FBIOGET_VSCREENINFO:
|
|
{
|
|
struct fb_videoinfo_s vinfo;
|
|
struct fb_planeinfo_s pinfo;
|
|
FAR struct fb_var_screeninfo *varinfo =
|
|
(FAR struct fb_var_screeninfo *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(varinfo != 0 && fb->vtable != NULL &&
|
|
fb->vtable->getvideoinfo != NULL);
|
|
ret = fb->vtable->getvideoinfo(fb->vtable, &vinfo);
|
|
if (ret < 0)
|
|
{
|
|
break;
|
|
}
|
|
|
|
ret = fb_get_planeinfo(fb, &pinfo, 0);
|
|
if (ret < 0)
|
|
{
|
|
break;
|
|
}
|
|
|
|
memset(varinfo, 0, sizeof(struct fb_var_screeninfo));
|
|
varinfo->xres = vinfo.xres;
|
|
varinfo->yres = vinfo.yres;
|
|
varinfo->xres_virtual = pinfo.xres_virtual;
|
|
varinfo->yres_virtual = pinfo.yres_virtual;
|
|
varinfo->xoffset = pinfo.xoffset;
|
|
varinfo->yoffset = pinfo.yoffset;
|
|
varinfo->bits_per_pixel = pinfo.bpp;
|
|
varinfo->grayscale = FB_ISMONO(vinfo.fmt);
|
|
switch (vinfo.fmt)
|
|
{
|
|
case FB_FMT_Y1:
|
|
varinfo->red.offset = 0;
|
|
varinfo->green.offset = 0;
|
|
varinfo->blue.offset = 0;
|
|
varinfo->red.length = 1;
|
|
varinfo->green.length = 1;
|
|
varinfo->blue.length = 1;
|
|
break;
|
|
|
|
case FB_FMT_Y8:
|
|
varinfo->red.offset = 0;
|
|
varinfo->green.offset = 0;
|
|
varinfo->blue.offset = 0;
|
|
varinfo->red.length = 8;
|
|
varinfo->green.length = 8;
|
|
varinfo->blue.length = 8;
|
|
break;
|
|
|
|
case FB_FMT_RGB16_555:
|
|
varinfo->red.offset = 10;
|
|
varinfo->green.offset = 5;
|
|
varinfo->blue.offset = 0;
|
|
varinfo->red.length = 5;
|
|
varinfo->green.length = 5;
|
|
varinfo->blue.length = 5;
|
|
break;
|
|
|
|
case FB_FMT_RGB16_565:
|
|
varinfo->red.offset = 11;
|
|
varinfo->green.offset = 5;
|
|
varinfo->blue.offset = 0;
|
|
varinfo->red.length = 5;
|
|
varinfo->green.length = 6;
|
|
varinfo->blue.length = 5;
|
|
break;
|
|
|
|
case FB_FMT_RGB24:
|
|
case FB_FMT_RGB32:
|
|
varinfo->red.offset = 16;
|
|
varinfo->green.offset = 8;
|
|
varinfo->blue.offset = 0;
|
|
varinfo->red.length = 8;
|
|
varinfo->green.length = 8;
|
|
varinfo->blue.length = 8;
|
|
break;
|
|
|
|
case FB_FMT_RGBA32:
|
|
varinfo->red.offset = 16;
|
|
varinfo->green.offset = 8;
|
|
varinfo->blue.offset = 0;
|
|
varinfo->transp.offset = 24;
|
|
varinfo->red.length = 8;
|
|
varinfo->green.length = 8;
|
|
varinfo->blue.length = 8;
|
|
varinfo->transp.length = 8;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case FBIOGET_FSCREENINFO:
|
|
{
|
|
struct fb_videoinfo_s vinfo;
|
|
struct fb_planeinfo_s pinfo;
|
|
FAR struct fb_fix_screeninfo *fixinfo =
|
|
(FAR struct fb_fix_screeninfo *)((uintptr_t)arg);
|
|
|
|
DEBUGASSERT(fixinfo != 0 && fb->vtable != NULL &&
|
|
fb->vtable->getvideoinfo != NULL);
|
|
ret = fb->vtable->getvideoinfo(fb->vtable, &vinfo);
|
|
if (ret < 0)
|
|
{
|
|
break;
|
|
}
|
|
|
|
ret = fb_get_planeinfo(fb, &pinfo, 0);
|
|
if (ret < 0)
|
|
{
|
|
break;
|
|
}
|
|
|
|
memset(fixinfo, 0, sizeof(struct fb_fix_screeninfo));
|
|
#ifdef CONFIG_FB_MODULEINFO
|
|
strlcpy(fixinfo->id, (FAR const char *)vinfo.moduleinfo,
|
|
sizeof(fixinfo->id));
|
|
#endif
|
|
fixinfo->smem_start = (unsigned long)pinfo.fbmem;
|
|
fixinfo->smem_len = pinfo.fblen;
|
|
fixinfo->type = FB_ISYUVPLANAR(vinfo.fmt) ?
|
|
FB_TYPE_INTERLEAVED_PLANES :
|
|
FB_TYPE_PACKED_PIXELS;
|
|
fixinfo->visual = FB_ISMONO(vinfo.fmt) ?
|
|
FB_VISUAL_MONO10 : FB_VISUAL_TRUECOLOR;
|
|
fixinfo->line_length = pinfo.stride;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
if (fb->vtable->ioctl != NULL)
|
|
{
|
|
ret = fb->vtable->ioctl(fb->vtable, cmd, arg);
|
|
}
|
|
else
|
|
{
|
|
gerr("ERROR: Unsupported IOCTL command: %d\n", cmd);
|
|
ret = -ENOTTY;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
#ifdef CONFIG_BUILD_KERNEL
|
|
static int fb_munmap(FAR struct task_group_s *group,
|
|
FAR struct mm_map_entry_s *entry,
|
|
FAR void *start, size_t length)
|
|
{
|
|
if (group && entry)
|
|
{
|
|
ginfo("%p, len=%zu\n", entry->vaddr, entry->length);
|
|
vm_unmap_region(entry->vaddr, entry->length);
|
|
mm_map_remove(get_current_mm(), entry);
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
#endif
|
|
|
|
static int fb_mmap(FAR struct file *filep, FAR struct mm_map_entry_s *map)
|
|
{
|
|
FAR struct inode *inode;
|
|
FAR struct fb_chardev_s *fb;
|
|
FAR struct fb_priv_s *priv;
|
|
struct fb_panelinfo_s panelinfo;
|
|
int ret;
|
|
|
|
/* Get the framebuffer instance */
|
|
|
|
inode = filep->f_inode;
|
|
fb = inode->i_private;
|
|
priv = filep->f_priv;
|
|
|
|
DEBUGASSERT(fb->vtable != NULL && priv != NULL);
|
|
|
|
/* Get panel info */
|
|
|
|
ret = fb_get_panelinfo(fb, &panelinfo, priv->overlay);
|
|
|
|
if (ret < 0)
|
|
{
|
|
return ret;
|
|
}
|
|
|
|
/* Return the address corresponding to the start of frame buffer. */
|
|
|
|
if (map->offset >= 0 && map->offset < panelinfo.fblen &&
|
|
map->length && map->offset + map->length <= panelinfo.fblen)
|
|
{
|
|
#ifdef CONFIG_BUILD_KERNEL
|
|
map->vaddr = vm_map_region((uintptr_t)panelinfo.fbmem + map->offset,
|
|
panelinfo.fblen);
|
|
map->length = panelinfo.fblen;
|
|
map->munmap = fb_munmap;
|
|
mm_map_add(get_current_mm(), map);
|
|
#else
|
|
map->vaddr = (FAR char *)panelinfo.fbmem + map->offset;
|
|
#endif
|
|
return OK;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: fb_poll
|
|
*
|
|
* Description:
|
|
* Wait for framebuffer to be writable.
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int fb_poll(FAR struct file *filep, struct pollfd *fds, bool setup)
|
|
{
|
|
FAR struct inode *inode;
|
|
FAR struct fb_chardev_s *fb;
|
|
FAR struct fb_priv_s *priv;
|
|
FAR struct circbuf_s *panbuf;
|
|
FAR struct pollfd **pollfds = NULL;
|
|
irqstate_t flags;
|
|
int ret = OK;
|
|
int i;
|
|
|
|
/* Get the framebuffer instance */
|
|
|
|
inode = filep->f_inode;
|
|
fb = inode->i_private;
|
|
priv = filep->f_priv;
|
|
|
|
DEBUGASSERT(fb->vtable != NULL && priv != NULL);
|
|
|
|
flags = enter_critical_section();
|
|
|
|
if (setup)
|
|
{
|
|
for (i = 0; i < CONFIG_VIDEO_FB_NPOLLWAITERS; ++i)
|
|
{
|
|
if (!priv->fds[i])
|
|
{
|
|
pollfds = &priv->fds[i];
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (pollfds == NULL)
|
|
{
|
|
ret = -EBUSY;
|
|
goto errout;
|
|
}
|
|
|
|
*pollfds = fds;
|
|
fds->priv = pollfds;
|
|
|
|
panbuf = fb_get_panbuf(fb, priv->overlay);
|
|
if (!circbuf_is_full(panbuf))
|
|
{
|
|
poll_notify(&fds, 1, POLLOUT);
|
|
}
|
|
}
|
|
else if (fds->priv != NULL)
|
|
{
|
|
/* This is a request to tear down the poll. */
|
|
|
|
FAR struct pollfd **slot = (FAR struct pollfd **)fds->priv;
|
|
*slot = NULL;
|
|
fds->priv = NULL;
|
|
}
|
|
|
|
errout:
|
|
leave_critical_section(flags);
|
|
return ret;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: fb_get_panelinfo
|
|
****************************************************************************/
|
|
|
|
static int fb_get_panelinfo(FAR struct fb_chardev_s *fb,
|
|
FAR struct fb_panelinfo_s *panelinfo,
|
|
int overlay)
|
|
{
|
|
struct fb_planeinfo_s pinfo;
|
|
struct fb_videoinfo_s vinfo;
|
|
int ret;
|
|
|
|
#ifdef CONFIG_FB_OVERLAY
|
|
if (overlay != FB_NO_OVERLAY)
|
|
{
|
|
struct fb_overlayinfo_s oinfo;
|
|
DEBUGASSERT(fb->vtable->getoverlayinfo != NULL);
|
|
memset(&oinfo, 0, sizeof(oinfo));
|
|
ret = fb->vtable->getoverlayinfo(fb->vtable, overlay, &oinfo);
|
|
|
|
if (ret < 0)
|
|
{
|
|
gerr("ERROR: getoverlayinfo() failed: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
panelinfo->fbmem = oinfo.fbmem;
|
|
panelinfo->fblen = oinfo.fblen;
|
|
panelinfo->fbcount = oinfo.yres_virtual == 0 ?
|
|
1 : (oinfo.yres_virtual / oinfo.yres);
|
|
panelinfo->bpp = oinfo.bpp;
|
|
return OK;
|
|
}
|
|
#endif
|
|
|
|
ret = fb_get_planeinfo(fb, &pinfo, 0);
|
|
if (ret < 0)
|
|
{
|
|
return ret;
|
|
}
|
|
|
|
ret = fb->vtable->getvideoinfo(fb->vtable, &vinfo);
|
|
if (ret < 0)
|
|
{
|
|
gerr("ERROR: getvideoinfo() failed: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
panelinfo->fbmem = pinfo.fbmem;
|
|
panelinfo->fblen = pinfo.fblen;
|
|
panelinfo->fbcount = pinfo.yres_virtual == 0 ?
|
|
1 : (pinfo.yres_virtual / vinfo.yres);
|
|
panelinfo->bpp = pinfo.bpp;
|
|
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: fb_get_planeinfo
|
|
****************************************************************************/
|
|
|
|
static int fb_get_planeinfo(FAR struct fb_chardev_s *fb,
|
|
FAR struct fb_planeinfo_s *pinfo,
|
|
uint8_t display)
|
|
{
|
|
int ret;
|
|
|
|
DEBUGASSERT(fb->vtable != NULL);
|
|
DEBUGASSERT(fb->vtable->getplaneinfo != NULL);
|
|
|
|
memset(pinfo, 0, sizeof(struct fb_planeinfo_s));
|
|
pinfo->display = display;
|
|
|
|
ret = fb->vtable->getplaneinfo(fb->vtable, fb->plane, pinfo);
|
|
|
|
if (ret < 0)
|
|
{
|
|
gerr("ERROR: getplaneinfo() failed: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: fb_do_pollnotify
|
|
****************************************************************************/
|
|
|
|
static void fb_do_pollnotify(wdparm_t arg)
|
|
{
|
|
FAR struct fb_paninfo_s *paninfo = (FAR struct fb_paninfo_s *)arg;
|
|
FAR struct fb_priv_s * priv;
|
|
irqstate_t flags;
|
|
int overlay;
|
|
|
|
overlay = paninfo - paninfo->dev->paninfo - 1;
|
|
|
|
flags = enter_critical_section();
|
|
for (priv = paninfo->dev->head; priv; priv = priv->flink)
|
|
{
|
|
if (priv->overlay != overlay)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
/* Notify framebuffer is writable. */
|
|
|
|
poll_notify(priv->fds, CONFIG_VIDEO_FB_NPOLLWAITERS, POLLOUT);
|
|
}
|
|
|
|
leave_critical_section(flags);
|
|
}
|
|
|
|
#ifdef CONFIG_FB_SYNC
|
|
/****************************************************************************
|
|
* Name: fb_sem_wait
|
|
****************************************************************************/
|
|
|
|
static int fb_sem_wait(FAR struct fb_chardev_s *fb,
|
|
FAR struct fb_priv_s *priv,
|
|
int overlay)
|
|
{
|
|
struct fb_panelinfo_s panelinfo;
|
|
irqstate_t flags;
|
|
int ret;
|
|
|
|
ret = fb_get_panelinfo(fb, &panelinfo, overlay);
|
|
if (ret < 0)
|
|
{
|
|
return ret;
|
|
}
|
|
|
|
flags = enter_critical_section();
|
|
|
|
if (fb_paninfo_count(fb->vtable, overlay) == panelinfo.fbcount)
|
|
{
|
|
ret = nxsem_wait(&priv->wait);
|
|
}
|
|
|
|
leave_critical_section(flags);
|
|
return ret;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: fb_sem_post
|
|
****************************************************************************/
|
|
|
|
static void fb_sem_post(FAR struct fb_chardev_s *fb, int overlay)
|
|
{
|
|
FAR struct fb_priv_s * priv;
|
|
irqstate_t flags;
|
|
|
|
DEBUGASSERT(fb != NULL);
|
|
|
|
flags = enter_critical_section();
|
|
|
|
for (priv = fb->head; priv; priv = priv->flink)
|
|
{
|
|
if (priv->overlay != overlay)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
for (; ; )
|
|
{
|
|
int semcount = 0;
|
|
|
|
sem_getvalue(&priv->wait, &semcount);
|
|
if (semcount >= 0)
|
|
{
|
|
break;
|
|
}
|
|
|
|
/* Wakeup all waiters. */
|
|
|
|
nxsem_post(&priv->wait);
|
|
}
|
|
}
|
|
|
|
leave_critical_section(flags);
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: fb_pollnotify
|
|
*
|
|
* Description:
|
|
* Notify the waiting thread that the framebuffer can be written.
|
|
*
|
|
* Input Parameters:
|
|
* vtable - Pointer to framebuffer's virtual table.
|
|
*
|
|
****************************************************************************/
|
|
|
|
static void fb_pollnotify(FAR struct fb_chardev_s *fb, int overlay)
|
|
{
|
|
int id = overlay + 1;
|
|
|
|
DEBUGASSERT(fb != NULL);
|
|
|
|
DEBUGASSERT(id >= 0 && id < fb->paninfo_count);
|
|
|
|
if (fb->vsyncoffset > 0)
|
|
{
|
|
wd_start(&fb->paninfo[id].wdog, fb->vsyncoffset, fb_do_pollnotify,
|
|
(wdparm_t)(&fb->paninfo[id]));
|
|
}
|
|
else
|
|
{
|
|
fb_do_pollnotify((wdparm_t)(&fb->paninfo[id]));
|
|
}
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: fb_notify_vsync
|
|
* Description:
|
|
* notify that the vsync comes.
|
|
*
|
|
* Input Parameters:
|
|
* vtable - Pointer to framebuffer's virtual table.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void fb_notify_vsync(FAR struct fb_vtable_s *vtable)
|
|
{
|
|
FAR struct fb_chardev_s *fb;
|
|
FAR struct fb_priv_s * priv;
|
|
irqstate_t flags;
|
|
|
|
fb = vtable->priv;
|
|
if (fb != NULL)
|
|
{
|
|
flags = enter_critical_section();
|
|
for (priv = fb->head; priv; priv = priv->flink)
|
|
{
|
|
/* Notify that the vsync comes. */
|
|
|
|
poll_notify(priv->fds, CONFIG_VIDEO_FB_NPOLLWAITERS, POLLPRI);
|
|
}
|
|
|
|
leave_critical_section(flags);
|
|
}
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: fb_peek_paninfo
|
|
* Description:
|
|
* Peek a frame from pan info queue of the specified overlay.
|
|
*
|
|
* Input Parameters:
|
|
* vtable - Pointer to framebuffer's virtual table.
|
|
* info - Pointer to pan info.
|
|
* overlay - Overlay index.
|
|
*
|
|
* Returned Value:
|
|
* Zero is returned on success; a negated errno value is returned on any
|
|
* failure.
|
|
****************************************************************************/
|
|
|
|
int fb_peek_paninfo(FAR struct fb_vtable_s *vtable,
|
|
FAR union fb_paninfo_u *info,
|
|
int overlay)
|
|
{
|
|
FAR struct circbuf_s *panbuf;
|
|
FAR struct fb_chardev_s *fb;
|
|
irqstate_t flags;
|
|
ssize_t ret;
|
|
|
|
/* Prevent calling before getting the vtable. */
|
|
|
|
fb = vtable->priv;
|
|
if (fb == NULL)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
panbuf = fb_get_panbuf(fb, overlay);
|
|
if (panbuf == NULL)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
flags = enter_critical_section();
|
|
|
|
/* Attempt to peek a frame from the vsync queue. */
|
|
|
|
ret = circbuf_peek(panbuf, info, sizeof(union fb_paninfo_u));
|
|
DEBUGASSERT(ret <= 0 || ret == sizeof(union fb_paninfo_u));
|
|
|
|
/* Re-enable interrupts */
|
|
|
|
leave_critical_section(flags);
|
|
return ret <= 0 ? -ENOSPC : OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: fb_remove_paninfo
|
|
* Description:
|
|
* Remove a frame from pan info queue of the specified overlay.
|
|
*
|
|
* Input Parameters:
|
|
* vtable - Pointer to framebuffer's virtual table.
|
|
* overlay - Overlay index.
|
|
*
|
|
* Returned Value:
|
|
* Zero is returned on success; a negated errno value is returned on any
|
|
* failure.
|
|
****************************************************************************/
|
|
|
|
int fb_remove_paninfo(FAR struct fb_vtable_s *vtable, int overlay)
|
|
{
|
|
FAR struct circbuf_s *panbuf;
|
|
FAR struct fb_chardev_s *fb;
|
|
irqstate_t flags;
|
|
ssize_t ret;
|
|
bool full;
|
|
|
|
fb = vtable->priv;
|
|
if (fb == NULL)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
panbuf = fb_get_panbuf(fb, overlay);
|
|
if (panbuf == NULL)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
flags = enter_critical_section();
|
|
|
|
full = (circbuf_space(panbuf) == 0);
|
|
|
|
/* Attempt to take a frame from the pan info. */
|
|
|
|
ret = circbuf_skip(panbuf, sizeof(union fb_paninfo_u));
|
|
DEBUGASSERT(ret <= 0 || ret == sizeof(union fb_paninfo_u));
|
|
|
|
/* Re-enable interrupts */
|
|
|
|
leave_critical_section(flags);
|
|
|
|
if (ret == sizeof(union fb_paninfo_u))
|
|
{
|
|
fb_pollnotify(fb, overlay);
|
|
if (full)
|
|
{
|
|
#ifdef CONFIG_FB_SYNC
|
|
fb_sem_post(fb, overlay);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
return ret <= 0 ? -ENOSPC : OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: fb_paninfo_count
|
|
* Description:
|
|
* Get pan info count of specified overlay pan info queue.
|
|
*
|
|
* Input Parameters:
|
|
* vtable - Pointer to framebuffer's virtual table.
|
|
* overlay - Overlay index.
|
|
*
|
|
* Returned Value:
|
|
* a non-negative value is returned on success; a negated errno value is
|
|
* returned on any failure.
|
|
****************************************************************************/
|
|
|
|
int fb_paninfo_count(FAR struct fb_vtable_s *vtable, int overlay)
|
|
{
|
|
FAR struct circbuf_s *panbuf;
|
|
FAR struct fb_chardev_s *fb;
|
|
irqstate_t flags;
|
|
ssize_t ret;
|
|
|
|
/* Prevent calling before getting the vtable. */
|
|
|
|
fb = vtable->priv;
|
|
if (fb == NULL)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
panbuf = fb_get_panbuf(fb, overlay);
|
|
if (panbuf == NULL)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
flags = enter_critical_section();
|
|
|
|
ret = circbuf_used(panbuf) / sizeof(union fb_paninfo_u);
|
|
|
|
leave_critical_section(flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: fb_register_device
|
|
*
|
|
* Description:
|
|
* Register the framebuffer character device at /dev/fbN where N is the
|
|
* display number if the devices supports only a single plane. If the
|
|
* hardware supports multiple color planes, then the device will be
|
|
* registered at /dev/fbN.M where N is the again display number but M
|
|
* is the display plane.
|
|
*
|
|
* Input Parameters:
|
|
* display - The display number for the case of boards supporting multiple
|
|
* displays or for hardware that supports multiple
|
|
* layers (each layer is consider a display). Typically zero.
|
|
* plane - Identifies the color plane on hardware that supports separate
|
|
* framebuffer "planes" for each color component.
|
|
* vtable - Pointer to framebuffer's virtual table.
|
|
*
|
|
* Returned Value:
|
|
* Zero (OK) is returned success; a negated errno value is returned on any
|
|
* failure.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int fb_register_device(int display, int plane,
|
|
FAR struct fb_vtable_s *vtable)
|
|
{
|
|
FAR struct fb_chardev_s *fb;
|
|
struct fb_panelinfo_s panelinfo;
|
|
struct fb_videoinfo_s vinfo;
|
|
char devname[16];
|
|
int nplanes;
|
|
int ret;
|
|
size_t i;
|
|
|
|
/* Allocate a framebuffer state instance */
|
|
|
|
fb = kmm_zalloc(sizeof(struct fb_chardev_s));
|
|
if (fb == NULL)
|
|
{
|
|
return -ENOMEM;
|
|
}
|
|
|
|
DEBUGASSERT((unsigned)plane <= UINT8_MAX);
|
|
DEBUGASSERT(vtable != NULL);
|
|
fb->plane = plane;
|
|
fb->vtable = vtable;
|
|
|
|
/* Initialize the frame buffer instance. */
|
|
|
|
DEBUGASSERT(vtable->getvideoinfo != NULL);
|
|
ret = vtable->getvideoinfo(vtable, &vinfo);
|
|
if (ret < 0)
|
|
{
|
|
gerr("ERROR: getvideoinfo() failed: %d\n", ret);
|
|
goto errout_with_fb;
|
|
}
|
|
|
|
nplanes = vinfo.nplanes;
|
|
DEBUGASSERT(vinfo.nplanes > 0 && (unsigned)plane < vinfo.nplanes);
|
|
|
|
#ifdef CONFIG_FB_OVERLAY
|
|
fb->paninfo_count = vinfo.noverlays;
|
|
#endif
|
|
|
|
/* Add the primary framebuffer */
|
|
|
|
fb->paninfo_count += 1;
|
|
fb->paninfo = kmm_zalloc(sizeof(struct fb_paninfo_s) * fb->paninfo_count);
|
|
|
|
if (fb->paninfo == NULL)
|
|
{
|
|
gerr("ERROR: alloc panbuf failed\n");
|
|
goto errout_with_fb;
|
|
}
|
|
|
|
for (i = 0; i < fb->paninfo_count; i++)
|
|
{
|
|
ret = fb_get_panelinfo(fb, &panelinfo, i - 1);
|
|
if (ret < 0)
|
|
{
|
|
goto errout_with_paninfo;
|
|
}
|
|
|
|
ret = circbuf_init(&(fb->paninfo[i].buf), NULL, panelinfo.fbcount
|
|
* sizeof(union fb_paninfo_u));
|
|
|
|
DEBUGASSERT(ret == 0);
|
|
|
|
fb->paninfo[i].dev = fb;
|
|
|
|
/* Clear the framebuffer memory */
|
|
|
|
memset(panelinfo.fbmem, 0, panelinfo.fblen);
|
|
}
|
|
|
|
/* Register the framebuffer device */
|
|
|
|
if (nplanes < 2)
|
|
{
|
|
snprintf(devname, sizeof(devname), "/dev/fb%d", display);
|
|
}
|
|
else
|
|
{
|
|
snprintf(devname, sizeof(devname), "/dev/fb%d.%d", display, plane);
|
|
}
|
|
|
|
ret = register_driver(devname, &g_fb_fops, 0666, fb);
|
|
|
|
if (ret < 0)
|
|
{
|
|
gerr("ERROR: register_driver() failed: %d\n", ret);
|
|
goto errout_with_paninfo;
|
|
}
|
|
|
|
vtable->priv = fb;
|
|
return OK;
|
|
|
|
errout_with_paninfo:
|
|
while (i-- > 0)
|
|
{
|
|
circbuf_uninit(&(fb->paninfo[i].buf));
|
|
}
|
|
|
|
kmm_free(fb->paninfo);
|
|
errout_with_fb:
|
|
kmm_free(fb);
|
|
return ret;
|
|
}
|