]> git.sur5r.net Git - u-boot/blob - drivers/video/coreboot.c
video: rk3288_mipi: Combine NULL check into IS_ERR_OR_NULL()
[u-boot] / drivers / video / coreboot.c
1 /*
2  * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
3  *
4  * SPDX-License-Identifier:     GPL-2.0+
5  */
6
7 #include <common.h>
8 #include <dm.h>
9 #include <vbe.h>
10 #include <video.h>
11 #include <asm/arch/sysinfo.h>
12
13 static int save_vesa_mode(struct cb_framebuffer *fb,
14                           struct vesa_mode_info *vesa)
15 {
16         /*
17          * If there is no framebuffer structure, bail out and keep
18          * running on the serial console.
19          */
20         if (!fb)
21                 return -ENXIO;
22
23         vesa->x_resolution = fb->x_resolution;
24         vesa->y_resolution = fb->y_resolution;
25         vesa->bits_per_pixel = fb->bits_per_pixel;
26         vesa->bytes_per_scanline = fb->bytes_per_line;
27         vesa->phys_base_ptr = fb->physical_address;
28         vesa->red_mask_size = fb->red_mask_size;
29         vesa->red_mask_pos = fb->red_mask_pos;
30         vesa->green_mask_size = fb->green_mask_size;
31         vesa->green_mask_pos = fb->green_mask_pos;
32         vesa->blue_mask_size = fb->blue_mask_size;
33         vesa->blue_mask_pos = fb->blue_mask_pos;
34         vesa->reserved_mask_size = fb->reserved_mask_size;
35         vesa->reserved_mask_pos = fb->reserved_mask_pos;
36
37         return 0;
38 }
39
40 static int coreboot_video_probe(struct udevice *dev)
41 {
42         struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
43         struct video_priv *uc_priv = dev_get_uclass_priv(dev);
44         struct cb_framebuffer *fb = lib_sysinfo.framebuffer;
45         struct vesa_mode_info *vesa = &mode_info.vesa;
46         int ret;
47
48         printf("Video: ");
49
50         /* Initialize vesa_mode_info structure */
51         ret = save_vesa_mode(fb, vesa);
52         if (ret)
53                 goto err;
54
55         ret = vbe_setup_video_priv(vesa, uc_priv, plat);
56         if (ret)
57                 goto err;
58
59         printf("%dx%dx%d\n", uc_priv->xsize, uc_priv->ysize,
60                vesa->bits_per_pixel);
61
62         return 0;
63
64 err:
65         printf("No video mode configured in coreboot!\n");
66         return ret;
67 }
68
69 static const struct udevice_id coreboot_video_ids[] = {
70         { .compatible = "coreboot-fb" },
71         { }
72 };
73
74 U_BOOT_DRIVER(coreboot_video) = {
75         .name   = "coreboot_video",
76         .id     = UCLASS_VIDEO,
77         .of_match = coreboot_video_ids,
78         .probe  = coreboot_video_probe,
79 };