u-boot/common/lcd_simplefb.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

90 lines
1.9 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Simplefb device tree support
*
* (C) Copyright 2015
* Stephen Warren <swarren@wwwdotorg.org>
*/
#include <common.h>
#include <dm.h>
#include <lcd.h>
#include <fdt_support.h>
#include <linux/libfdt.h>
#include <video.h>
DECLARE_GLOBAL_DATA_PTR;
static int lcd_dt_simplefb_configure_node(void *blob, int off)
{
int xsize, ysize;
int bpix; /* log2 of bits per pixel */
const char *name;
ulong fb_base;
#ifdef CONFIG_DM_VIDEO
struct video_uc_platdata *plat;
struct video_priv *uc_priv;
struct udevice *dev;
int ret;
ret = uclass_first_device_err(UCLASS_VIDEO, &dev);
if (ret)
return ret;
uc_priv = dev_get_uclass_priv(dev);
plat = dev_get_uclass_platdata(dev);
xsize = uc_priv->xsize;
ysize = uc_priv->ysize;
bpix = uc_priv->bpix;
fb_base = plat->base;
#else
xsize = lcd_get_pixel_width();
ysize = lcd_get_pixel_height();
bpix = LCD_BPP;
fb_base = gd->fb_base;
#endif
switch (bpix) {
case 4: /* VIDEO_BPP16 */
name = "r5g6b5";
break;
case 5: /* VIDEO_BPP32 */
name = "a8r8g8b8";
break;
default:
return -EINVAL;
}
return fdt_setup_simplefb_node(blob, off, fb_base, xsize, ysize,
xsize * (1 << bpix) / 8, name);
}
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);
}