projects / J-u-boot.git / blame
| 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 RC |
11 | #include <video.h> |
| 12 | ||
| 13 | static int simple_video_probe(struct udevice *dev) | |
| 14 | { | |
| 15 | struct video_uc_platdata *plat = dev_get_uclass_platdata(dev); | |
| 16 | struct video_priv *uc_priv = dev_get_uclass_priv(dev); | |
| 17 | const void *blob = gd->fdt_blob; | |
| 18 | const int node = dev_of_offset(dev); | |
| 19 | const char *format; | |
| 20 | fdt_addr_t base; | |
| 21 | fdt_size_t size; | |
| 22 | ||
| 23 | base = fdtdec_get_addr_size_auto_parent(blob, dev_of_offset(dev->parent), | |
| 24 | node, "reg", 0, &size, false); | |
| 25 | if (base == FDT_ADDR_T_NONE) { | |
| 26 | debug("%s: Failed to decode memory region\n", __func__); | |
| 27 | return -EINVAL; | |
| 28 | } | |
| 29 | ||
| 30 | debug("%s: base=%llx, size=%llu\n", __func__, base, size); | |
| 31 | ||
| 32 | /* | |
| 33 | * TODO is there some way to reserve the framebuffer | |
| 34 | * region so it isn't clobbered? | |
| 35 | */ | |
| 36 | plat->base = base; | |
| 37 | plat->size = size; | |
| 38 | ||
| 39 | video_set_flush_dcache(dev, true); | |
| 40 | ||
| 41 | debug("%s: Query resolution...\n", __func__); | |
| 42 | ||
| 43 | uc_priv->xsize = fdtdec_get_uint(blob, node, "width", 0); | |
| 44 | uc_priv->ysize = fdtdec_get_uint(blob, node, "height", 0); | |
| 45 | uc_priv->rot = 0; | |
| 46 | ||
| 47 | format = fdt_getprop(blob, node, "format", NULL); | |
| 48 | debug("%s: %dx%d@%s\n", __func__, uc_priv->xsize, uc_priv->ysize, format); | |
| 49 | ||
| 50 | if (strcmp(format, "r5g6b5") == 0) { | |
| 51 | uc_priv->bpix = VIDEO_BPP16; | |
| 52 | } else if (strcmp(format, "a8b8g8r8") == 0) { | |
| 53 | uc_priv->bpix = VIDEO_BPP32; | |
| 54 | } else { | |
| 55 | printf("%s: invalid format: %s\n", __func__, format); | |
| 56 | return -EINVAL; | |
| 57 | } | |
| 58 | ||
| 59 | return 0; | |
| 60 | } | |
| 61 | ||
| 62 | static const struct udevice_id simple_video_ids[] = { | |
| 63 | { .compatible = "simple-framebuffer" }, | |
| 64 | { } | |
| 65 | }; | |
| 66 | ||
| 67 | U_BOOT_DRIVER(simple_video) = { | |
| 68 | .name = "simple_video", | |
| 69 | .id = UCLASS_VIDEO, | |
| 70 | .of_match = simple_video_ids, | |
| 71 | .probe = simple_video_probe, | |
| 971d7e64 | 72 | }; |