Re: [PATCH 6/8] arm: exynos: config exynos5 hdmi-hpd gpio

Re: [PATCH 6/8] arm: exynos: config exynos5 hdmi-hpd gpio

[Kyungmin Park]

On 10/5/12, Rahul Sharma <rahul.sharma@samsung.com> wrote:
> This patch adds support for the configuration of exynos5 hdmi-hpd gpio.
> It sets the gpio fucntion to EINT which is required for recieving
> external hpd interrupt in drm hdmi driver.
>
> Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
> ---
>  arch/arm/mach-exynos/mach-exynos5-dt.c |    9 +++++++++
>  1 files changed, 9 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c
> b/arch/arm/mach-exynos/mach-exynos5-dt.c
> index 003963c..9a6d569 100644
> --- a/arch/arm/mach-exynos/mach-exynos5-dt.c
> +++ b/arch/arm/mach-exynos/mach-exynos5-dt.c
> @@ -11,6 +11,7 @@
>
>  #include <linux/of_platform.h>
>  #include <linux/serial_core.h>
> +#include <linux/gpio.h>
>
>  #include <asm/mach/arch.h>
>  #include <asm/hardware/gic.h>
> @@ -18,6 +19,7 @@
>
>  #include <plat/cpu.h>
>  #include <plat/regs-serial.h>
> +#include <plat/gpio-cfg.h>
>
>  #include "common.h"
>
> @@ -81,10 +83,17 @@ static void __init exynos5250_dt_map_io(void)
>  	s3c24xx_init_clocks(24000000);
>  }
>
> +static void smdk_hpd_setup(void)
> +{
> +	s3c_gpio_cfgpin(EXYNOS5_GPX3(7), S3C_GPIO_SFN(0xf));
> +	s3c_gpio_setpull(EXYNOS5_GPX3(7), S3C_GPIO_PULL_DOWN);
> +}
these should be described at dts file instead of here. and name is not
good. smdk...

Thank you,
Kyungmin Park
> +
>  static void __init exynos5250_dt_machine_init(void)
>  {
>  	of_platform_populate(NULL, of_default_bus_match_table,
>  				exynos5250_auxdata_lookup, NULL);
> +	smdk_hpd_setup();
>  }
>
>  static char const *exynos5250_dt_compat[] __initdata = {
> --
> 1.7.0.4
>
> --
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>

[PATCH 0/8] arm: exynos: add dt based support for exynos5 hdmi

[Rahul Sharma]

This patch set adds the DT based support for Samsung's Exynos5250. It adds
device tree nodes for hdmi, mixer, hdmiphy and hdmiddc. The name of these
devices are changed to the one matching with drivers. Exynos-drm and exynos
hdmi-drm-commmon devices are added as paltform devices. Apart from that hpd
gpio function is configured during the machine init.

This patchset is based on linux v3.6-rc5, branch dt-samsung-new at
git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung.git

Rahul Sharma (8):
  dts: exynos: add device tree support for exynos5 hdmi
  dts: exynos: add device tree support for exynos5 mixer
  dts: exynos: add device tree support for exynos5 hdmiphy
  dts: exynos: add device tree support for exynos5 hdmiddc
  arm: exynos: add clocks for exynos5 hdmi
  arm: exynos: config exynos5 hdmi-hpd gpio
  arm: exynos: add exynos5 drm framework platform device
  arm: exynos: add exynos5 drm-hdmi common platform device

 arch/arm/boot/dts/exynos5250-smdk5250.dts |   24 +++++++++++++++++++++++-
 arch/arm/boot/dts/exynos5250.dtsi         |   23 +++++++++++++++++++++++
 arch/arm/mach-exynos/clock-exynos5.c      |   14 ++++++++++++--
 arch/arm/mach-exynos/dev-drm.c            |    5 +++++
 arch/arm/mach-exynos/include/mach/map.h   |    2 ++
 arch/arm/mach-exynos/mach-exynos5-dt.c    |   24 ++++++++++++++++++++++++
 arch/arm/plat-samsung/include/plat/devs.h |    1 +
 7 files changed, 90 insertions(+), 3 deletions(-)

[PATCH 1/8] dts: exynos: add device tree support for exynos5 hdmi

[Rahul Sharma]

This patch adds support for device tree based discovery for exynos5
hdmi. Hdmi node is also renamed with "exynos5-hdmi".

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
---
 arch/arm/boot/dts/exynos5250-smdk5250.dts |    4 ++++
 arch/arm/boot/dts/exynos5250.dtsi         |    7 +++++++
 arch/arm/mach-exynos/include/mach/map.h   |    1 +
 arch/arm/mach-exynos/mach-exynos5-dt.c    |    2 ++
 4 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts b/arch/arm/boot/dts/exynos5250-smdk5250.dts
index a352df4..2a478ab 100644
--- a/arch/arm/boot/dts/exynos5250-smdk5250.dts
+++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts
@@ -166,4 +166,8 @@
 	spi_2: spi@12d40000 {
 		status = "disabled";
 	};
+
+	hdmi {
+		hpd-gpio = <&gpx3 7 0xf 1 3>;
+	};
 };
diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
index f69e389..4e019b5 100644
--- a/arch/arm/boot/dts/exynos5250.dtsi
+++ b/arch/arm/boot/dts/exynos5250.dtsi
@@ -492,4 +492,11 @@
 			#gpio-cells = <4>;
 		};
 	};
+
+	hdmi {
+		compatible = "samsung,exynos5-hdmi";
+		reg = <0x14530000 0x100000>;
+		interrupts = <0 95 0>;
+		version = "1.4";
+        };
 };
diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h
index 5edbbe9..7b9efb2 100644
--- a/arch/arm/mach-exynos/include/mach/map.h
+++ b/arch/arm/mach-exynos/include/mach/map.h
@@ -201,6 +201,7 @@
 #define EXYNOS4_PA_SDO			0x12C20000
 #define EXYNOS4_PA_HDMI			0x12D00000
 #define EXYNOS4_PA_IIC_HDMIPHY		0x138E0000
+#define EXYNOS5_PA_HDMI		0x14530000
 
 #define EXYNOS4_PA_IIC(x)		(0x13860000 + ((x) * 0x10000))
 #define EXYNOS5_PA_IIC(x)		(0x12C60000 + ((x) * 0x10000))
diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c
index ce82f30..43449fb 100644
--- a/arch/arm/mach-exynos/mach-exynos5-dt.c
+++ b/arch/arm/mach-exynos/mach-exynos5-dt.c
@@ -64,6 +64,8 @@ static const struct of_dev_auxdata exynos5250_auxdata_lookup[] __initconst = {
 	OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_PDMA0, "dma-pl330.0", NULL),
 	OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_PDMA1, "dma-pl330.1", NULL),
 	OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_MDMA1, "dma-pl330.2", NULL),
+	OF_DEV_AUXDATA("samsung,exynos5-hdmi", EXYNOS5_PA_HDMI,
+				"exynos5-hdmi", NULL),
 	{},
 };
 
-- 
1.7.0.4

[PATCH 2/8] dts: exynos: add device tree support for exynos5 mixer

[Rahul Sharma]

This patch adds support for device tree based discovery for exynos5
mixer. Mixer node is also renamed with "exynos5-mixer".

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
---
 arch/arm/boot/dts/exynos5250.dtsi       |    8 ++++++++
 arch/arm/mach-exynos/include/mach/map.h |    1 +
 arch/arm/mach-exynos/mach-exynos5-dt.c  |    2 ++
 3 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
index 4e019b5..e4483bc 100644
--- a/arch/arm/boot/dts/exynos5250.dtsi
+++ b/arch/arm/boot/dts/exynos5250.dtsi
@@ -499,4 +499,12 @@
 		interrupts = <0 95 0>;
 		version = "1.4";
         };
+
+        mixer {
+		compatible = "samsung,exynos5-mixer";
+		reg = <0x14450000 0x10000>;
+		interrupts = <0 94 0>;
+		version = "16.0.33.0";
+		vp-support = <0>;
+        };
 };
diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h
index 7b9efb2..314ee75 100644
--- a/arch/arm/mach-exynos/include/mach/map.h
+++ b/arch/arm/mach-exynos/include/mach/map.h
@@ -201,6 +201,7 @@
 #define EXYNOS4_PA_SDO			0x12C20000
 #define EXYNOS4_PA_HDMI			0x12D00000
 #define EXYNOS4_PA_IIC_HDMIPHY		0x138E0000
+#define EXYNOS5_PA_MIXER		0x14450000
 #define EXYNOS5_PA_HDMI		0x14530000
 
 #define EXYNOS4_PA_IIC(x)		(0x13860000 + ((x) * 0x10000))
diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c
index 43449fb..cdad7c1 100644
--- a/arch/arm/mach-exynos/mach-exynos5-dt.c
+++ b/arch/arm/mach-exynos/mach-exynos5-dt.c
@@ -66,6 +66,8 @@ static const struct of_dev_auxdata exynos5250_auxdata_lookup[] __initconst = {
 	OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_MDMA1, "dma-pl330.2", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5-hdmi", EXYNOS5_PA_HDMI,
 				"exynos5-hdmi", NULL),
+	OF_DEV_AUXDATA("samsung,exynos5-mixer", EXYNOS5_PA_MIXER,
+				"exynos5-mixer", NULL),
 	{},
 };
 
-- 
1.7.0.4

[PATCH 3/8] dts: exynos: add device tree support for exynos5 hdmiphy

[Rahul Sharma]

This patch adds support for device tree based discovery for exynos5
hdmiphy.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
---
 arch/arm/boot/dts/exynos5250-smdk5250.dts |   10 ++++++++++
 arch/arm/boot/dts/exynos5250.dtsi         |    8 ++++++++
 arch/arm/mach-exynos/mach-exynos5-dt.c    |    2 ++
 3 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts b/arch/arm/boot/dts/exynos5250-smdk5250.dts
index 2a478ab..af9271c 100644
--- a/arch/arm/boot/dts/exynos5250-smdk5250.dts
+++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts
@@ -79,6 +79,16 @@
 		status = "disabled";
 	};
 
+        i2c@12CE0000 {
+		samsung,i2c-sda-delay = <100>;
+		samsung,i2c-max-bus-freq = <66000>;
+
+		hdmiphy {
+			compatible = "samsung,exynos5-hdmiphy";
+			reg = <0x38>;
+		};
+	};
+
 	dwmmc_0: dwmmc0@12200000 {
 		num-slots = <1>;
 		supports-highspeed;
diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
index e4483bc..dd5a4c3 100644
--- a/arch/arm/boot/dts/exynos5250.dtsi
+++ b/arch/arm/boot/dts/exynos5250.dtsi
@@ -152,6 +152,14 @@
 		#size-cells = <0>;
 	};
 
+	i2c@12CE0000 {
+		compatible = "samsung,s3c2440-hdmiphy-i2c";
+		reg = <0x12CE0000 0x1000>;
+		interrupts = <0 64 0>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};
+
 	spi_0: spi@12d20000 {
 		compatible = "samsung,exynos4210-spi";
 		reg = <0x12d20000 0x100>;
diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c
index cdad7c1..3f129db 100644
--- a/arch/arm/mach-exynos/mach-exynos5-dt.c
+++ b/arch/arm/mach-exynos/mach-exynos5-dt.c
@@ -47,6 +47,8 @@ static const struct of_dev_auxdata exynos5250_auxdata_lookup[] __initconst = {
 				"s3c2440-i2c.0", NULL),
 	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(1),
 				"s3c2440-i2c.1", NULL),
+	OF_DEV_AUXDATA("samsung,s3c2440-hdmiphy-i2c", EXYNOS5_PA_IIC(8),
+				"s3c2440-hdmiphy-i2c", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI0,
 				"dw_mmc.0", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI1,
-- 
1.7.0.4

[PATCH 4/8] dts: exynos: add device tree support for exynos5 hdmiddc

[Rahul Sharma]

This patch adds support for device tree based discovery for exynos5
hdmi ddc.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
---
 arch/arm/boot/dts/exynos5250-smdk5250.dts |   10 +++++++++-
 arch/arm/mach-exynos/mach-exynos5-dt.c    |    2 ++
 2 files changed, 11 insertions(+), 1 deletions(-)

diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts b/arch/arm/boot/dts/exynos5250-smdk5250.dts
index af9271c..be22a83 100644
--- a/arch/arm/boot/dts/exynos5250-smdk5250.dts
+++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts
@@ -56,7 +56,15 @@
 	};
 
 	i2c@12C80000 {
-		status = "disabled";
+		samsung,i2c-sda-delay = <100>;
+		samsung,i2c-max-bus-freq = <66000>;
+		gpios = <&gpa0 6 3 3 0>,
+			<&gpa0 7 3 3 0>;
+
+		hdmiddc {
+			compatible = "samsung,exynos5-hdmiddc";
+			reg = <0x50>;
+		};
 	};
 
 	i2c@12C90000 {
diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c
index 3f129db..003963c 100644
--- a/arch/arm/mach-exynos/mach-exynos5-dt.c
+++ b/arch/arm/mach-exynos/mach-exynos5-dt.c
@@ -47,6 +47,8 @@ static const struct of_dev_auxdata exynos5250_auxdata_lookup[] __initconst = {
 				"s3c2440-i2c.0", NULL),
 	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(1),
 				"s3c2440-i2c.1", NULL),
+	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(2),
+				"s3c2440-i2c.2", NULL),
 	OF_DEV_AUXDATA("samsung,s3c2440-hdmiphy-i2c", EXYNOS5_PA_IIC(8),
 				"s3c2440-hdmiphy-i2c", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI0,
-- 
1.7.0.4

[PATCH 5/8] arm: exynos: add clocks for exynos5 hdmi

[Rahul Sharma]

This patch adds support for clocks for hdmi, hdmiphy and mixer.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
---
 arch/arm/mach-exynos/clock-exynos5.c |   14 ++++++++++++--
 1 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-exynos/clock-exynos5.c b/arch/arm/mach-exynos/clock-exynos5.c
index 17e6c77..ec2a4da 100644
--- a/arch/arm/mach-exynos/clock-exynos5.c
+++ b/arch/arm/mach-exynos/clock-exynos5.c
@@ -201,6 +201,11 @@ static int exynos5_clk_ip_isp1_ctrl(struct clk *clk, int enable)
 	return s5p_gatectrl(EXYNOS5_CLKGATE_IP_ISP1, clk, enable);
 }
 
+static int exynos5_clk_hdmiphy_ctrl(struct clk *clk, int enable)
+{
+	return s5p_gatectrl(S5P_HDMI_PHY_CONTROL, clk, enable);
+}
+
 /* Core list of CMU_CPU side */
 
 static struct clksrc_clk exynos5_clk_mout_apll = {
@@ -612,12 +617,17 @@ static struct clk exynos5_init_clocks_off[] = {
 		.ctrlbit	= (1 << 0),
 	}, {
 		.name		= "hdmi",
-		.devname	= "exynos4-hdmi",
+		.devname	= "exynos5-hdmi",
 		.enable		= exynos5_clk_ip_disp1_ctrl,
 		.ctrlbit	= (1 << 6),
 	}, {
+		.name		= "hdmiphy",
+		.devname	= "exynos5-hdmi",
+		.enable		= exynos5_clk_hdmiphy_ctrl,
+		.ctrlbit	= (1 << 0),
+	}, {
 		.name		= "mixer",
-		.devname	= "s5p-mixer",
+		.devname	= "exynos5-mixer",
 		.enable		= exynos5_clk_ip_disp1_ctrl,
 		.ctrlbit	= (1 << 5),
 	}, {
-- 
1.7.0.4

[PATCH 6/8] arm: exynos: config exynos5 hdmi-hpd gpio

[Rahul Sharma]

This patch adds support for the configuration of exynos5 hdmi-hpd gpio.
It sets the gpio fucntion to EINT which is required for recieving
external hpd interrupt in drm hdmi driver.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
---
 arch/arm/mach-exynos/mach-exynos5-dt.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c
index 003963c..9a6d569 100644
--- a/arch/arm/mach-exynos/mach-exynos5-dt.c
+++ b/arch/arm/mach-exynos/mach-exynos5-dt.c
@@ -11,6 +11,7 @@
 
 #include <linux/of_platform.h>
 #include <linux/serial_core.h>
+#include <linux/gpio.h>
 
 #include <asm/mach/arch.h>
 #include <asm/hardware/gic.h>
@@ -18,6 +19,7 @@
 
 #include <plat/cpu.h>
 #include <plat/regs-serial.h>
+#include <plat/gpio-cfg.h>
 
 #include "common.h"
 
@@ -81,10 +83,17 @@ static void __init exynos5250_dt_map_io(void)
 	s3c24xx_init_clocks(24000000);
 }
 
+static void smdk_hpd_setup(void)
+{
+	s3c_gpio_cfgpin(EXYNOS5_GPX3(7), S3C_GPIO_SFN(0xf));
+	s3c_gpio_setpull(EXYNOS5_GPX3(7), S3C_GPIO_PULL_DOWN);
+}
+
 static void __init exynos5250_dt_machine_init(void)
 {
 	of_platform_populate(NULL, of_default_bus_match_table,
 				exynos5250_auxdata_lookup, NULL);
+	smdk_hpd_setup();
 }
 
 static char const *exynos5250_dt_compat[] __initdata = {
-- 
1.7.0.4

[PATCH 7/8] arm: exynos: add exynos5 drm framework platform device

[Rahul Sharma]

This patch adds drm framework platform device. This device is a
software device, hence not made part of device tree file.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
---
 arch/arm/mach-exynos/mach-exynos5-dt.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c
index 9a6d569..db3447c 100644
--- a/arch/arm/mach-exynos/mach-exynos5-dt.c
+++ b/arch/arm/mach-exynos/mach-exynos5-dt.c
@@ -17,6 +17,7 @@
 #include <asm/hardware/gic.h>
 #include <mach/map.h>
 
+#include <plat/devs.h>
 #include <plat/cpu.h>
 #include <plat/regs-serial.h>
 #include <plat/gpio-cfg.h>
@@ -77,6 +78,9 @@ static const struct of_dev_auxdata exynos5250_auxdata_lookup[] __initconst = {
 	{},
 };
 
+static struct platform_device *exynos5_devices[] __initdata = {
+	&exynos_device_drm,
+};
 static void __init exynos5250_dt_map_io(void)
 {
 	exynos_init_io(NULL, 0);
@@ -94,6 +98,7 @@ static void __init exynos5250_dt_machine_init(void)
 	of_platform_populate(NULL, of_default_bus_match_table,
 				exynos5250_auxdata_lookup, NULL);
 	smdk_hpd_setup();
+	platform_add_devices(exynos5_devices, ARRAY_SIZE(exynos5_devices));
 }
 
 static char const *exynos5250_dt_compat[] __initdata = {
-- 
1.7.0.4

[PATCH 8/8] arm: exynos: add exynos5 drm-hdmi common platform device

[Rahul Sharma]

This patch adds drm-hdmi-common platform device which abstracts hdmi
and mixer device. This is software module hence not palced as device
tree node.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
---
 arch/arm/mach-exynos/dev-drm.c            |    5 +++++
 arch/arm/mach-exynos/mach-exynos5-dt.c    |    2 ++
 arch/arm/plat-samsung/include/plat/devs.h |    1 +
 3 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-exynos/dev-drm.c b/arch/arm/mach-exynos/dev-drm.c
index 17c9c6e..ca811de 100644
--- a/arch/arm/mach-exynos/dev-drm.c
+++ b/arch/arm/mach-exynos/dev-drm.c
@@ -27,3 +27,8 @@ struct platform_device exynos_device_drm = {
 		.coherent_dma_mask	= DMA_BIT_MASK(32),
 	}
 };
+
+/* common drm-hdmi device which abstracts hdmi and mixer dev*/
+struct platform_device exynos_drm_hdmi_device = {
+	.name	= "exynos-drm-hdmi",
+};
diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c
index db3447c..db7092e 100644
--- a/arch/arm/mach-exynos/mach-exynos5-dt.c
+++ b/arch/arm/mach-exynos/mach-exynos5-dt.c
@@ -79,8 +79,10 @@ static const struct of_dev_auxdata exynos5250_auxdata_lookup[] __initconst = {
 };
 
 static struct platform_device *exynos5_devices[] __initdata = {
+	&exynos_drm_hdmi_device,
 	&exynos_device_drm,
 };
+
 static void __init exynos5250_dt_map_io(void)
 {
 	exynos_init_io(NULL, 0);
diff --git a/arch/arm/plat-samsung/include/plat/devs.h b/arch/arm/plat-samsung/include/plat/devs.h
index 5da4b4f..cda177e 100644
--- a/arch/arm/plat-samsung/include/plat/devs.h
+++ b/arch/arm/plat-samsung/include/plat/devs.h
@@ -134,6 +134,7 @@ extern struct platform_device exynos4_device_pcm2;
 extern struct platform_device exynos4_device_spdif;
 
 extern struct platform_device exynos_device_drm;
+extern struct platform_device exynos_drm_hdmi_device;
 
 extern struct platform_device samsung_asoc_dma;
 extern struct platform_device samsung_asoc_idma;
-- 
1.7.0.4