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authorEric Nelson <eric.nelson@boundarydevices.com>2013-03-09 07:06:09 +0000
committerStefano Babic <sbabic@denx.de>2013-03-20 11:43:19 +0100
commit99e2dc59cb6c1e73e639f3be60170a72119d6e30 (patch)
tree31eff28dc1ca1244983d661a230beae28ef47c1e /arch
parenta49db3df76619022ddbf03ea16d715cebd57cf1b (diff)
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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>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/imx-common/Makefile1
-rw-r--r--arch/arm/imx-common/cmd_hdmidet.c37
2 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm/imx-common/Makefile b/arch/arm/imx-common/Makefile
index 6309fcd..428a57e 100644
--- a/arch/arm/imx-common/Makefile
+++ b/arch/arm/imx-common/Makefile
@@ -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)
diff --git a/arch/arm/imx-common/cmd_hdmidet.c b/arch/arm/imx-common/cmd_hdmidet.c
new file mode 100644
index 0000000..794bf50
--- /dev/null
+++ b/arch/arm/imx-common/cmd_hdmidet.c
@@ -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",
+ ""
+);