projects / thirdparty / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 033167c4 NK |
2 | /* |
| 3 | * Simplefb device tree support | |
| 4 | * | |
| 5 | * (C) Copyright 2015 | |
| 6 | * Stephen Warren <swarren@wwwdotorg.org> | |
| 033167c4 NK |
7 | */ |
| 8 | ||
| 9 | #include <common.h> | |
| d08e42a8 | 10 | #include <dm.h> |
| 033167c4 NK |
11 | #include <lcd.h> |
| 12 | #include <fdt_support.h> | |
| b08c8c48 | 13 | #include <linux/libfdt.h> |
| d08e42a8 | 14 | #include <video.h> |
| 033167c4 NK |
15 | |
| 16 | DECLARE_GLOBAL_DATA_PTR; | |
| 17 | ||
| 18 | static int lcd_dt_simplefb_configure_node(void *blob, int off) | |
| 19 | { | |
| 45261455 SG |
20 | int xsize, ysize; |
| 21 | int bpix; /* log2 of bits per pixel */ | |
| 22 | const char *name; | |
| 23 | ulong fb_base; | |
| d08e42a8 SG |
24 | #ifdef CONFIG_DM_VIDEO |
| 25 | struct video_uc_platdata *plat; | |
| 26 | struct video_priv *uc_priv; | |
| 27 | struct udevice *dev; | |
| 28 | int ret; | |
| 45261455 | 29 | |
| d08e42a8 SG |
30 | ret = uclass_first_device_err(UCLASS_VIDEO, &dev); |
| 31 | if (ret) | |
| 32 | return ret; | |
| 33 | uc_priv = dev_get_uclass_priv(dev); | |
| 34 | plat = dev_get_uclass_platdata(dev); | |
| 35 | xsize = uc_priv->xsize; | |
| 36 | ysize = uc_priv->ysize; | |
| 37 | bpix = uc_priv->bpix; | |
| 38 | fb_base = plat->base; | |
| 39 | #else | |
| 45261455 SG |
40 | xsize = lcd_get_pixel_width(); |
| 41 | ysize = lcd_get_pixel_height(); | |
| 42 | bpix = LCD_BPP; | |
| 43 | fb_base = gd->fb_base; | |
| d08e42a8 | 44 | #endif |
| 45261455 SG |
45 | switch (bpix) { |
| 46 | case 4: /* VIDEO_BPP16 */ | |
| 47 | name = "r5g6b5"; | |
| 48 | break; | |
| 49 | case 5: /* VIDEO_BPP32 */ | |
| 50 | name = "a8r8g8b8"; | |
| 51 | break; | |
| 52 | default: | |
| 53 | return -EINVAL; | |
| 54 | } | |
| 55 | ||
| 56 | return fdt_setup_simplefb_node(blob, off, fb_base, xsize, ysize, | |
| 57 | xsize * (1 << bpix) / 8, name); | |
| 033167c4 NK |
58 | } |
| 59 | ||
| 60 | int lcd_dt_simplefb_add_node(void *blob) | |
| 61 | { | |
| 62 | static const char compat[] = "simple-framebuffer"; | |
| 63 | static const char disabled[] = "disabled"; | |
| 64 | int off, ret; | |
| 65 | ||
| 66 | off = fdt_add_subnode(blob, 0, "framebuffer"); | |
| 67 | if (off < 0) | |
| 68 | return -1; | |
| 69 | ||
| 70 | ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled)); | |
| 71 | if (ret < 0) | |
| 72 | return -1; | |
| 73 | ||
| 74 | ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat)); | |
| 75 | if (ret < 0) | |
| 76 | return -1; | |
| 77 | ||
| 78 | return lcd_dt_simplefb_configure_node(blob, off); | |
| 79 | } | |
| 80 | ||
| 81 | int lcd_dt_simplefb_enable_existing_node(void *blob) | |
| 82 | { | |
| 83 | int off; | |
| 84 | ||
| 85 | off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer"); | |
| 86 | if (off < 0) | |
| 87 | return -1; | |
| 88 | ||
| 89 | return lcd_dt_simplefb_configure_node(blob, off); | |
| 90 | } |