Patchwork [U-Boot,V2] i.MX6: Add hdmidet command to detect attached HDMI monitor

login
register
mail settings
Submitter Eric Nelson
Date March 9, 2013, 4:26 p.m.
Message ID <1362846365-9876-1-git-send-email-eric.nelson@boundarydevices.com>
Download mbox | patch
Permalink /patch/226345/
State Changes Requested
Headers show

Comments

Eric Nelson - March 9, 2013, 4:26 p.m.
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
---

V2 uses struct hdmi_regs instead of raw offsets.

 arch/arm/imx-common/Makefile      |    1 +
 arch/arm/imx-common/cmd_hdmidet.c |   38 +++++++++++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 arch/arm/imx-common/cmd_hdmidet.c
Otavio Salvador - March 9, 2013, 4:49 p.m.
On Sat, Mar 9, 2013 at 1:26 PM, Eric Nelson
<eric.nelson@boundarydevices.com> wrote:
> Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
> ---
>
> V2 uses struct hdmi_regs instead of raw offsets.
>
>  arch/arm/imx-common/Makefile      |    1 +
>  arch/arm/imx-common/cmd_hdmidet.c |   38 +++++++++++++++++++++++++++++++++++++
>  2 files changed, 39 insertions(+)
>  create mode 100644 arch/arm/imx-common/cmd_hdmidet.c
>
> 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..852e19a
> --- /dev/null
> +++ b/arch/arm/imx-common/cmd_hdmidet.c
> @@ -0,0 +1,38 @@
> +/*
> + * 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;

This seems to fit in a single line.

> +}
> +
> +U_BOOT_CMD(hdmidet, 1, 1, do_hdmidet,
> +       "detect HDMI monitor",
> +       ""
> +);
> --
> 1.7.9.5
>

Patch

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..852e19a
--- /dev/null
+++ b/arch/arm/imx-common/cmd_hdmidet.c
@@ -0,0 +1,38 @@ 
+/*
+ * 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",
+	""
+);