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
vesa_video_probe(struct udevice * dev)14 static 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
vesa_video_bind(struct udevice * dev)32 static 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
43 static const struct udevice_id vesa_video_ids[] = {
44 { .compatible = "vesa-fb" },
45 { }
46 };
47
48 U_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
56 static struct pci_device_id vesa_video_supported[] = {
57 { PCI_DEVICE_CLASS(PCI_CLASS_DISPLAY_VGA << 8, ~0) },
58 { },
59 };
60
61 U_BOOT_PCI_DEVICE(vesa_video, vesa_video_supported);
62