mirror of
https://github.com/smaeul/u-boot.git
synced 2025-10-24 17:48:14 +01:00
944e515e75
CONFIG_VIDEO conditional compilation checks are no longer needed since FDT_SIMPLEFB Kconfig now depends on VIDEO Kconfig. Signed-off-by: Devarsh Thakkar <devarsht@ti.com> Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
120 lines
2.5 KiB
C
120 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Simplefb device tree support
|
|
*
|
|
* (C) Copyright 2015
|
|
* Stephen Warren <swarren@wwwdotorg.org>
|
|
*/
|
|
|
|
#include <dm.h>
|
|
#include <fdt_support.h>
|
|
#include <asm/global_data.h>
|
|
#include <linux/libfdt.h>
|
|
#include <video.h>
|
|
#include <spl.h>
|
|
#include <bloblist.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
static int fdt_simplefb_configure_node(void *blob, int off)
|
|
{
|
|
int xsize, ysize;
|
|
int bpix; /* log2 of bits per pixel */
|
|
const char *name;
|
|
ulong fb_base;
|
|
struct video_uc_plat *plat;
|
|
struct video_priv *uc_priv;
|
|
struct udevice *dev;
|
|
int ret;
|
|
|
|
if (IS_ENABLED(CONFIG_SPL_VIDEO_HANDOFF) && xpl_phase() > PHASE_SPL) {
|
|
struct video_handoff *ho;
|
|
|
|
ho = bloblist_find(BLOBLISTT_U_BOOT_VIDEO, sizeof(*ho));
|
|
if (!ho)
|
|
return log_msg_ret("Missing video bloblist", -ENOENT);
|
|
|
|
xsize = ho->xsize;
|
|
ysize = ho->ysize;
|
|
bpix = ho->bpix;
|
|
fb_base = ho->fb;
|
|
} else {
|
|
ret = uclass_first_device_err(UCLASS_VIDEO, &dev);
|
|
if (ret)
|
|
return ret;
|
|
uc_priv = dev_get_uclass_priv(dev);
|
|
plat = dev_get_uclass_plat(dev);
|
|
xsize = uc_priv->xsize;
|
|
ysize = uc_priv->ysize;
|
|
bpix = uc_priv->bpix;
|
|
fb_base = plat->base;
|
|
}
|
|
|
|
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 fdt_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 fdt_simplefb_configure_node(blob, off);
|
|
}
|
|
|
|
/**
|
|
* fdt_simplefb_enable_existing_node() - enable simple-framebuffer DT node
|
|
*
|
|
* @blob: device-tree
|
|
* Return: 0 on success, non-zero otherwise
|
|
*/
|
|
static int fdt_simplefb_enable_existing_node(void *blob)
|
|
{
|
|
int off;
|
|
|
|
off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
|
|
if (off < 0)
|
|
return -1;
|
|
|
|
return fdt_simplefb_configure_node(blob, off);
|
|
}
|
|
|
|
int fdt_simplefb_enable_and_mem_rsv(void *blob)
|
|
{
|
|
int ret;
|
|
|
|
/* nothing to do when video is not active */
|
|
if (!video_is_active())
|
|
return 0;
|
|
|
|
ret = fdt_simplefb_enable_existing_node(blob);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return fdt_add_fb_mem_rsv(blob);
|
|
}
|