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video: sunxi: extract simplefb match code to a new file

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As the DE2 simplefb setup code can also benefit from the simplefb match
code, extract it to a new source file.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This commit is contained in:
Icenowy Zheng 2017-10-26 11:14:45 +08:00 committed by Anatolij Gustschin
parent 401a3ca0fb
commit e5f92467d7
4 changed files with 55 additions and 12 deletions
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2
drivers/video/sunxi/Makefile
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@ -5,5 +5,5 @@
# SPDX-License-Identifier: GPL-2.0+
#
obj-$(CONFIG_VIDEO_SUNXI) += sunxi_display.o lcdc.o tve_common.o ../videomodes.o
obj-$(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

30
drivers/video/sunxi/simplefb_common.c Normal file
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@ -0,0 +1,30 @@
/*
* Common code for Allwinner SimpleFB with pipeline.
*
* (C) Copyright 2013-2014 Luc Verhaegen <libv@skynet.be>
* (C) Copyright 2014-2015 Hans de Goede <hdegoede@redhat.com>
* (C) Copyright 2017 Icenowy Zheng <icenowy@aosc.io>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <fdtdec.h>
int sunxi_simplefb_fdt_match(void *blob, const char *pipeline)
{
int offset, ret;
/* Find a prefilled simpefb node, matching out pipeline config */
offset = fdt_node_offset_by_compatible(blob, -1,
"allwinner,simple-framebuffer");
while (offset >= 0) {
ret = fdt_stringlist_search(blob, offset, "allwinner,pipeline",
pipeline);
if (ret == 0)
break;
offset = fdt_node_offset_by_compatible(blob, offset,
"allwinner,simple-framebuffer");
}
return offset;
}

22
drivers/video/sunxi/simplefb_common.h Normal file
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@ -0,0 +1,22 @@
/*
* (C) Copyright 2017 Icenowy Zheng <icenowy@aosc.io>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __SIMPLEFB_COMMON_H
#define __SIMPLEFB_COMMON_H
/**
* sunxi_simplefb_fdt_match() - match a sunxi simplefb node
*
* Match a sunxi simplefb device node with a specified pipeline, and
* return its offset.
*
* @blob: device tree blob
* @pipeline: display pipeline
* @return device node offset in blob, or negative values if failed
*/
int sunxi_simplefb_fdt_match(void *blob, const char *pipeline);
#endif

13
drivers/video/sunxi/sunxi_display.c
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@ -29,6 +29,7 @@
#include "../anx9804.h"
#include "../hitachi_tx18d42vm_lcd.h"
#include "../ssd2828.h"
#include "simplefb_common.h"
#ifdef CONFIG_VIDEO_LCD_BL_PWM_ACTIVE_LOW
#define PWM_ON 0
@ -1377,17 +1378,7 @@ int sunxi_simplefb_setup(void *blob)
break;
}
/* Find a prefilled simpefb node, matching out pipeline config */
offset = fdt_node_offset_by_compatible(blob, -1,
"allwinner,simple-framebuffer");
while (offset >= 0) {
ret = fdt_stringlist_search(blob, offset, "allwinner,pipeline",
pipeline);
if (ret == 0)
break;
offset = fdt_node_offset_by_compatible(blob, offset,
"allwinner,simple-framebuffer");
}
offset = sunxi_simplefb_fdt_match(blob, pipeline);
if (offset < 0) {
eprintf("Cannot setup simplefb: node not found\n");
return 0; /* Keep older kernels working */