LXR uboot/drivers/video/vesa.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
   4 */
   5
   6#include <common.h>
   7#include <dm.h>
   8#include <log.h>
   9#include <pci.h>
  10#include <vbe.h>
  11#include <video.h>
  12#include <asm/mtrr.h>
  13
  14static int vesa_video_probe(struct udevice *dev)
  15{
  16        struct video_uc_plat *plat = dev_get_uclass_plat(dev);
  17        ulong fbbase;
  18        int ret;
  19
  20        ret = vbe_setup_video(dev, NULL);
  21        if (ret)
  22                return log_ret(ret);
  23
  24        /* Use write-combining for the graphics memory, 256MB */
  25        fbbase = IS_ENABLED(CONFIG_VIDEO_COPY) ? plat->copy_base : plat->base;
  26        mtrr_add_request(MTRR_TYPE_WRCOMB, fbbase, 256 << 20);
  27        mtrr_commit(true);
  28
  29        return 0;
  30}
  31
  32static int vesa_video_bind(struct udevice *dev)
  33{
  34        struct video_uc_plat *uc_plat = dev_get_uclass_plat(dev);
  35
  36        /* Set the maximum supported resolution */
  37        uc_plat->size = 2560 * 1600 * 4;
  38        log_debug("%s: Frame buffer size %x\n", __func__, uc_plat->size);
  39
  40        return 0;
  41}
  42
  43static const struct udevice_id vesa_video_ids[] = {
  44        { .compatible = "vesa-fb" },
  45        { }
  46};
  47
  48U_BOOT_DRIVER(vesa_video) = {
  49        .name   = "vesa_video",
  50        .id     = UCLASS_VIDEO,
  51        .of_match = vesa_video_ids,
  52        .bind   = vesa_video_bind,
  53        .probe  = vesa_video_probe,
  54};
  55
  56static struct pci_device_id vesa_video_supported[] = {
  57        { PCI_DEVICE_CLASS(PCI_CLASS_DISPLAY_VGA << 8, ~0) },
  58        { },
  59};
  60
  61U_BOOT_PCI_DEVICE(vesa_video, vesa_video_supported);
  62