Newer
Older
/*
* Simplefb device tree support
*
* (C) Copyright 2015
* Stephen Warren <swarren@wwwdotorg.org>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <lcd.h>
#include <fdt_support.h>
#include <libfdt.h>
DECLARE_GLOBAL_DATA_PTR;
static int lcd_dt_simplefb_configure_node(void *blob, int off)
{
int vl_col = lcd_get_pixel_width();
int vl_row = lcd_get_pixel_height();
#if LCD_BPP == LCD_COLOR16
return fdt_setup_simplefb_node(blob, off, gd->fb_base, vl_col, vl_row,
vl_col * 2, "r5g6b5");
#elif LCD_BPP == LCD_COLOR32
return fdt_setup_simplefb_node(blob, off, gd->fb_base, vl_col, vl_row,
vl_col * 4, "a8r8g8b8");
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
#else
return -1;
#endif
}
int lcd_dt_simplefb_add_node(void *blob)
{
static const char compat[] = "simple-framebuffer";
static const char disabled[] = "disabled";
int off, ret;
off = fdt_add_subnode(blob, 0, "framebuffer");
if (off < 0)
return -1;
ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
if (ret < 0)
return -1;
ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
if (ret < 0)
return -1;
return lcd_dt_simplefb_configure_node(blob, off);
}
int lcd_dt_simplefb_enable_existing_node(void *blob)
{
int off;
off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
if (off < 0)
return -1;
return lcd_dt_simplefb_configure_node(blob, off);
}