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sunxi: setup simplefb for Allwinner DE2

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As the support of EFI boot on Allwinner H3 is broken, we still need to
use simplefb to pass the framebuffer to Linux.

Add code to setup simplefb for Allwinner DE2 driver.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This commit is contained in:
Icenowy Zheng 2017-10-26 11:14:47 +08:00 committed by Anatolij Gustschin
parent f6bdddc92b
commit be5b96f0e4
3 changed files with 74 additions and 1 deletions
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1
arch/arm/mach-sunxi/Kconfig
View file

@ -770,6 +770,7 @@ config VIDEO_DE2
depends on SUNXI_DE2
select DM_VIDEO
select DISPLAY
imply VIDEO_DT_SIMPLEFB
default y
---help---
Say y here if you want to build DE2 video driver which is present on

2
drivers/video/sunxi/Makefile
View file

@ -6,4 +6,4 @@
#
obj-$(CONFIG_VIDEO_SUNXI) += sunxi_display.o simplefb_common.o lcdc.o tve_common.o ../videomodes.o
obj-$(CONFIG_VIDEO_DE2) += sunxi_de2.o sunxi_dw_hdmi.o lcdc.o ../dw_hdmi.o
obj-$(CONFIG_VIDEO_DE2) += sunxi_de2.o sunxi_dw_hdmi.o simplefb_common.o lcdc.o ../dw_hdmi.o

72
drivers/video/sunxi/sunxi_de2.c
View file

@ -10,6 +10,8 @@
#include <display.h>
#include <dm.h>
#include <edid.h>
#include <fdtdec.h>
#include <fdt_support.h>
#include <video.h>
#include <asm/global_data.h>
#include <asm/io.h>
@ -17,6 +19,7 @@
#include <asm/arch/display2.h>
#include <dm/device-internal.h>
#include <dm/uclass-internal.h>
#include "simplefb_common.h"
DECLARE_GLOBAL_DATA_PTR;
@ -292,3 +295,72 @@ U_BOOT_DRIVER(sunxi_de2) = {
U_BOOT_DEVICE(sunxi_de2) = {
.name = "sunxi_de2"
};
/*
* Simplefb support.
*/
#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_VIDEO_DT_SIMPLEFB)
int sunxi_simplefb_setup(void *blob)
{
struct udevice *de2, *hdmi;
struct video_priv *de2_priv;
struct video_uc_platdata *de2_plat;
int mux;
int offset, ret;
u64 start, size;
const char *pipeline = NULL;
debug("Setting up simplefb\n");
if (IS_ENABLED(CONFIG_MACH_SUNXI_H3_H5))
mux = 0;
else
mux = 1;
/* Skip simplefb setting if DE2 / HDMI is not present */
ret = uclass_find_device_by_name(UCLASS_VIDEO,
"sunxi_de2", &de2);
if (ret) {
debug("DE2 not present\n");
return 0;
}
ret = uclass_find_device_by_name(UCLASS_DISPLAY,
"sunxi_dw_hdmi", &hdmi);
if (ret) {
debug("HDMI not present\n");
return 0;
}
if (mux == 0)
pipeline = "mixer0-lcd0-hdmi";
else
pipeline = "mixer1-lcd1-hdmi";
de2_priv = dev_get_uclass_priv(de2);
de2_plat = dev_get_uclass_platdata(de2);
offset = sunxi_simplefb_fdt_match(blob, pipeline);
if (offset < 0) {
eprintf("Cannot setup simplefb: node not found\n");
return 0; /* Keep older kernels working */
}
start = gd->bd->bi_dram[0].start;
size = de2_plat->base - start;
ret = fdt_fixup_memory_banks(blob, &start, &size, 1);
if (ret) {
eprintf("Cannot setup simplefb: Error reserving memory\n");
return ret;
}
ret = fdt_setup_simplefb_node(blob, offset, de2_plat->base,
de2_priv->xsize, de2_priv->ysize,
VNBYTES(de2_priv->bpix) * de2_priv->xsize,
"x8r8g8b8");
if (ret)
eprintf("Cannot setup simplefb: Error setting properties\n");
return ret;
}
#endif /* CONFIG_OF_BOARD_SETUP && CONFIG_VIDEO_DT_SIMPLEFB */