]>
Commit | Line | Data |
---|---|---|
83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
971d7e64 RC |
2 | /* |
3 | * (C) Copyright 2017 Rob Clark | |
971d7e64 RC |
4 | */ |
5 | ||
6 | #include <common.h> | |
7 | #include <dm.h> | |
8 | #include <fdtdec.h> | |
9 | #include <fdt_support.h> | |
f7ae49fc | 10 | #include <log.h> |
971d7e64 | 11 | #include <video.h> |
401d1c4f | 12 | #include <asm/global_data.h> |
971d7e64 RC |
13 | |
14 | static int simple_video_probe(struct udevice *dev) | |
15 | { | |
8a8d24bd | 16 | struct video_uc_plat *plat = dev_get_uclass_plat(dev); |
971d7e64 RC |
17 | struct video_priv *uc_priv = dev_get_uclass_priv(dev); |
18 | const void *blob = gd->fdt_blob; | |
19 | const int node = dev_of_offset(dev); | |
20 | const char *format; | |
21 | fdt_addr_t base; | |
22 | fdt_size_t size; | |
23 | ||
24 | base = fdtdec_get_addr_size_auto_parent(blob, dev_of_offset(dev->parent), | |
25 | node, "reg", 0, &size, false); | |
26 | if (base == FDT_ADDR_T_NONE) { | |
27 | debug("%s: Failed to decode memory region\n", __func__); | |
28 | return -EINVAL; | |
29 | } | |
30 | ||
31 | debug("%s: base=%llx, size=%llu\n", __func__, base, size); | |
32 | ||
33 | /* | |
34 | * TODO is there some way to reserve the framebuffer | |
35 | * region so it isn't clobbered? | |
36 | */ | |
37 | plat->base = base; | |
38 | plat->size = size; | |
39 | ||
40 | video_set_flush_dcache(dev, true); | |
41 | ||
42 | debug("%s: Query resolution...\n", __func__); | |
43 | ||
44 | uc_priv->xsize = fdtdec_get_uint(blob, node, "width", 0); | |
45 | uc_priv->ysize = fdtdec_get_uint(blob, node, "height", 0); | |
db2c8ed3 TS |
46 | uc_priv->rot = fdtdec_get_uint(blob, node, "rot", 0); |
47 | if (uc_priv->rot > 3) { | |
48 | log_debug("%s: invalid rot\n", __func__); | |
49 | return log_msg_ret("rot", -EINVAL); | |
50 | } | |
971d7e64 RC |
51 | |
52 | format = fdt_getprop(blob, node, "format", NULL); | |
53 | debug("%s: %dx%d@%s\n", __func__, uc_priv->xsize, uc_priv->ysize, format); | |
54 | ||
55 | if (strcmp(format, "r5g6b5") == 0) { | |
56 | uc_priv->bpix = VIDEO_BPP16; | |
2c2653d6 MK |
57 | } else if (strcmp(format, "a8b8g8r8") == 0 || |
58 | strcmp(format, "x8b8g8r8") == 0) { | |
971d7e64 | 59 | uc_priv->bpix = VIDEO_BPP32; |
2c2653d6 MK |
60 | uc_priv->format = VIDEO_X8B8G8R8; |
61 | } else if (strcmp(format, "a8r8g8b8") == 0 || | |
62 | strcmp(format, "x8r8g8b8") == 0) { | |
63 | uc_priv->bpix = VIDEO_BPP32; | |
64 | uc_priv->format = VIDEO_X8R8G8B8; | |
65 | } else if (strcmp(format, "a2r10g10b10") == 0 || | |
66 | strcmp(format, "x2r10g10b10") == 0) { | |
67 | uc_priv->bpix = VIDEO_BPP32; | |
68 | uc_priv->format = VIDEO_X2R10G10B10; | |
971d7e64 RC |
69 | } else { |
70 | printf("%s: invalid format: %s\n", __func__, format); | |
71 | return -EINVAL; | |
72 | } | |
73 | ||
74 | return 0; | |
75 | } | |
76 | ||
77 | static const struct udevice_id simple_video_ids[] = { | |
78 | { .compatible = "simple-framebuffer" }, | |
79 | { } | |
80 | }; | |
81 | ||
82 | U_BOOT_DRIVER(simple_video) = { | |
83 | .name = "simple_video", | |
84 | .id = UCLASS_VIDEO, | |
85 | .of_match = simple_video_ids, | |
86 | .probe = simple_video_probe, | |
971d7e64 | 87 | }; |