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i.MX6: Add hdmidet command to detect attached HDMI monitor 

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Acked-by: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Eric Nelson 2013-03-09 07:06:09 +00:00 committed by Stefano Babic
parent a49db3df76
commit 99e2dc59cb
2 changed files with 38 additions and 0 deletions
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1
arch/arm/imx-common/Makefile
View File

@ -32,6 +32,7 @@ COBJS-y = iomux-v3.o timer.o cpu.o speed.o
COBJS-$(CONFIG_I2C_MXC) += i2c-mxv7.o
endif
COBJS-$(CONFIG_CMD_BMODE) += cmd_bmode.o
COBJS-$(CONFIG_CMD_HDMIDETECT) += cmd_hdmidet.o
COBJS := $(sort $(COBJS-y))
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)

37
arch/arm/imx-common/cmd_hdmidet.c Normal file
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@ -0,0 +1,37 @@
/*
* Copyright (C) 2012 Boundary Devices Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/mxc_hdmi.h>
#include <asm/io.h>
static int do_hdmidet(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
struct hdmi_regs *hdmi = (struct hdmi_regs *)HDMI_ARB_BASE_ADDR;
u8 reg = readb(&hdmi->phy_stat0) & HDMI_PHY_HPD;
return (reg&HDMI_PHY_HPD) ? 0 : 1;
}
U_BOOT_CMD(hdmidet, 1, 1, do_hdmidet,
"detect HDMI monitor",
""
);