u-boot/arch/arm/imx-common/video.c
Eric Benard e688a99c07 imx-common/video: add detect_hdmi
this function is used by several board together with board_video_skip
to detect if hdmi is plugged is order to select the display to use.
So move it in imx-common to share it.

Signed-off-by: Eric Bénard <eric@eukrea.com>
2014-04-15 12:23:57 +02:00

65 lines
1.4 KiB
C

/*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/errno.h>
#include <asm/imx-common/video.h>
extern struct display_info_t const displays[];
extern size_t display_count;
int board_video_skip(void)
{
int i;
int ret;
char const *panel = getenv("panel");
if (!panel) {
for (i = 0; i < display_count; i++) {
struct display_info_t const *dev = displays+i;
if (dev->detect && dev->detect(dev)) {
panel = dev->mode.name;
printf("auto-detected panel %s\n", panel);
break;
}
}
if (!panel) {
panel = displays[0].mode.name;
printf("No panel detected: default to %s\n", panel);
i = 0;
}
} else {
for (i = 0; i < display_count; i++) {
if (!strcmp(panel, displays[i].mode.name))
break;
}
}
if (i < display_count) {
ret = ipuv3_fb_init(&displays[i].mode, 0,
displays[i].pixfmt);
if (!ret) {
displays[i].enable(displays+i);
printf("Display: %s (%ux%u)\n",
displays[i].mode.name,
displays[i].mode.xres,
displays[i].mode.yres);
} else
printf("LCD %s cannot be configured: %d\n",
displays[i].mode.name, ret);
} else {
printf("unsupported panel %s\n", panel);
return -EINVAL;
}
return 0;
}
#ifdef CONFIG_IMX_HDMI
#include <asm/arch/mxc_hdmi.h>
#include <asm/io.h>
int detect_hdmi(struct display_info_t const *dev)
{
struct hdmi_regs *hdmi = (struct hdmi_regs *)HDMI_ARB_BASE_ADDR;
return readb(&hdmi->phy_stat0) & HDMI_DVI_STAT;
}
#endif