62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <log.h>
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#include <pci.h>
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#include <vbe.h>
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#include <video.h>
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#include <asm/mtrr.h>
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static int vesa_video_probe(struct udevice *dev)
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{
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struct video_uc_plat *plat = dev_get_uclass_plat(dev);
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ulong fbbase;
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int ret;
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ret = vbe_setup_video(dev, NULL);
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if (ret)
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return log_ret(ret);
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/* Use write-combining for the graphics memory, 256MB */
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fbbase = IS_ENABLED(CONFIG_VIDEO_COPY) ? plat->copy_base : plat->base;
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mtrr_add_request(MTRR_TYPE_WRCOMB, fbbase, 256 << 20);
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mtrr_commit(true);
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return 0;
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}
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static int vesa_video_bind(struct udevice *dev)
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{
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struct video_uc_plat *uc_plat = dev_get_uclass_plat(dev);
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/* Set the maximum supported resolution */
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uc_plat->size = 2560 * 1600 * 4;
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log_debug("%s: Frame buffer size %x\n", __func__, uc_plat->size);
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return 0;
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}
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static const struct udevice_id vesa_video_ids[] = {
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{ .compatible = "vesa-fb" },
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{ }
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};
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U_BOOT_DRIVER(vesa_video) = {
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.name = "vesa_video",
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.id = UCLASS_VIDEO,
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.of_match = vesa_video_ids,
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.bind = vesa_video_bind,
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.probe = vesa_video_probe,
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};
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static struct pci_device_id vesa_video_supported[] = {
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{ PCI_DEVICE_CLASS(PCI_CLASS_DISPLAY_VGA << 8, ~0) },
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{ },
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};
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U_BOOT_PCI_DEVICE(vesa_video, vesa_video_supported);
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