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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>
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/* | ||
* 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> | ||
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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; | ||
} | ||
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U_BOOT_CMD(hdmidet, 1, 1, do_hdmidet, | ||
"detect HDMI monitor", | ||
"" | ||
); |