u-boot/common/lcd_simplefb.c
Nikita Kiryanov 033167c4c5 lcd: dt: extract simplefb support
We now have api functions that can support compiling simplefb code as its own
module. Since this code is not part of the display functionality, extract it
to its own file.

Raspberry Pi is updated to accommodate the changes.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Bo Shen <voice.shen@atmel.com>
Tested-by: Josh Wu <josh.wu@atmel.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Stephen Warren <swarren@wwwdotorg.org>
2015-02-10 13:31:26 +01:00

60 lines
1.2 KiB
C

/*
* 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)
{
#if LCD_BPP == LCD_COLOR16
int vl_col = lcd_get_pixel_width();
int vl_row = lcd_get_pixel_height();
return fdt_setup_simplefb_node(blob, off, gd->fb_base, vl_col, vl_row,
vl_col * 2, "r5g6b5");
#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);
}