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033167c4 NK |
1 | /* |
2 | * Simplefb device tree support | |
3 | * | |
4 | * (C) Copyright 2015 | |
5 | * Stephen Warren <swarren@wwwdotorg.org> | |
6 | * | |
7 | * SPDX-License-Identifier: GPL-2.0+ | |
8 | */ | |
9 | ||
10 | #include <common.h> | |
11 | #include <lcd.h> | |
12 | #include <fdt_support.h> | |
13 | #include <libfdt.h> | |
14 | ||
15 | DECLARE_GLOBAL_DATA_PTR; | |
16 | ||
17 | static int lcd_dt_simplefb_configure_node(void *blob, int off) | |
18 | { | |
19 | #if LCD_BPP == LCD_COLOR16 | |
20 | int vl_col = lcd_get_pixel_width(); | |
21 | int vl_row = lcd_get_pixel_height(); | |
22 | return fdt_setup_simplefb_node(blob, off, gd->fb_base, vl_col, vl_row, | |
23 | vl_col * 2, "r5g6b5"); | |
24 | #else | |
25 | return -1; | |
26 | #endif | |
27 | } | |
28 | ||
29 | int lcd_dt_simplefb_add_node(void *blob) | |
30 | { | |
31 | static const char compat[] = "simple-framebuffer"; | |
32 | static const char disabled[] = "disabled"; | |
33 | int off, ret; | |
34 | ||
35 | off = fdt_add_subnode(blob, 0, "framebuffer"); | |
36 | if (off < 0) | |
37 | return -1; | |
38 | ||
39 | ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled)); | |
40 | if (ret < 0) | |
41 | return -1; | |
42 | ||
43 | ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat)); | |
44 | if (ret < 0) | |
45 | return -1; | |
46 | ||
47 | return lcd_dt_simplefb_configure_node(blob, off); | |
48 | } | |
49 | ||
50 | int lcd_dt_simplefb_enable_existing_node(void *blob) | |
51 | { | |
52 | int off; | |
53 | ||
54 | off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer"); | |
55 | if (off < 0) | |
56 | return -1; | |
57 | ||
58 | return lcd_dt_simplefb_configure_node(blob, off); | |
59 | } |