[PATCHv3 0/3] Add initial support for slimport anx78xx

[PATCHv3 0/3] Add initial support for slimport anx78xx

[Enric Balletbo i Serra]

Hi all,

This is the third version with more changes requested by Dan.

The following series add initial support for the Slimport ANX7814 transmitter, a
ultra-low power Full-HD (1080p60) transmitter designed for portable device.

The driver was originally created and based from the work of Junhua Xia from
Analogix. This driver is a refactor of the original driver and fixes different
coding style lines, and different errors/warnings reported by checkpatch. Also
there were things that I noticed that we need to change like:

 - Convert the numbered GPIO API to the new descriptor based GPIO API.
 - Review the DT binding
 - Add missing MODULE_DEVICE_TABLE(of, ...);
 - Fix Makefiles and Kconfig to build conditionally.
 - Use SIMPLE_DEV_PM_OPS() instead of the deprecated i2c .suspend and
  .resume callbacks.
 - Move to use managed device resources.
 - Remove dead/unused code.
 - And others ...

Changes since v2 (requested by Daniel Kurtz)
 - clean up the typos, and little nits requested by Dan.
 - move to the drm/bridge directory
 - rename the files, variables, types, etc. to anx78xx
 - plumb through the context struct to all functions that act on the device
 - use proper messaging (dev_ rather than pr_, _dbg/_err rather than _info)

Changes since v1:
 - As requested by Greg, move from staging to a subsystem.

Best regards,

Enric Balletbo i Serra (3):
  of: Add vendor prefix for Analogix Semiconductor, Inc.
  devicetree: Add new ANX7814 SlimPort transmitter binding.
  drm: bridge: anx78xx: Add anx78xx driver support by analogix.

 .../devicetree/bindings/vendor-prefixes.txt        |    1 +
 .../devicetree/bindings/video/bridge/anx7814.txt   |   22 +
 drivers/gpu/drm/bridge/Kconfig                     |    2 +
 drivers/gpu/drm/bridge/Makefile                    |    1 +
 drivers/gpu/drm/bridge/anx78xx/Kconfig             |    7 +
 drivers/gpu/drm/bridge/anx78xx/Makefile            |    4 +
 drivers/gpu/drm/bridge/anx78xx/anx78xx.h           |   44 +
 drivers/gpu/drm/bridge/anx78xx/anx78xx_main.c      |  241 ++
 drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c   | 3198 ++++++++++++++++++++
 drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.h   |  215 ++
 drivers/gpu/drm/bridge/anx78xx/slimport_tx_reg.h   |  786 +++++
 11 files changed, 4521 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/video/bridge/anx7814.txt
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/Kconfig
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/Makefile
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/anx78xx.h
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/anx78xx_main.c
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.h
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/slimport_tx_reg.h

-- 
2.1.0

[PATCHv3 1/3] of: Add vendor prefix for Analogix Semiconductor, Inc.

[Enric Balletbo i Serra]

Analogix Semiconductor develops analog and mixed-signal devices for digital
media and communications interconnect applications.

Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Rob Herring <robh@kernel.org>
---
 Documentation/devicetree/bindings/vendor-prefixes.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index ac5f0c3..e914a02 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -22,6 +22,7 @@ ampire	Ampire Co., Ltd.
 ams	AMS AG
 amstaos	AMS-Taos Inc.
 apm	Applied Micro Circuits Corporation (APM)
+analogix	Analogix Semiconductor, Inc.
 aptina	Aptina Imaging
 arasan	Arasan Chip Systems
 arm	ARM Ltd.
-- 
2.1.0

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[PATCHv3 2/3] devicetree: Add new ANX7814 SlimPort transmitter binding.

[Enric Balletbo i Serra]

The ANX7814 is an ultra-low power Full-HD (1080p60) SlimPort transmitter
designed for portable devices.

You can add support to your board with current binding.

Example:

	anx7814: anx7814@38 {
		compatible = "analogix,anx7814";
		reg = <0x38>;
		pd-gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
		reset-gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
	};

Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
---
 .../devicetree/bindings/video/bridge/anx7814.txt   | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/video/bridge/anx7814.txt

diff --git a/Documentation/devicetree/bindings/video/bridge/anx7814.txt b/Documentation/devicetree/bindings/video/bridge/anx7814.txt
new file mode 100644
index 0000000..a8cc746
--- /dev/null
+++ b/Documentation/devicetree/bindings/video/bridge/anx7814.txt
@@ -0,0 +1,22 @@
+Analogix ANX7814 SlimPort (Full-HD Transmitter)
+-----------------------------------------------
+
+The ANX7814 is an ultra-low power Full-HD (1080p60) SlimPort transmitter
+designed for portable devices.
+
+Required properties:
+
+ - compatible	: "analogix,anx7814"
+ - reg		: I2C address of the device
+ - pd-gpios	: Which GPIO to use for power down
+ - reset-gpios	: Which GPIO to use for reset
+
+Example:
+
+	anx7814: anx7814@38 {
+		compatible = "analogix,anx7814";
+		reg = <0x38>;
+		pd-gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
+		reset-gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
+	};
+
-- 
2.1.0

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Re: [PATCHv3 2/3] devicetree: Add new ANX7814 SlimPort transmitter binding.

[Enric Balletbo Serra]

2015-09-10 18:35 GMT+02:00 Enric Balletbo i Serra <eballetbo-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
> The ANX7814 is an ultra-low power Full-HD (1080p60) SlimPort transmitter
> designed for portable devices.
>
> You can add support to your board with current binding.
>
> Example:
>
>         anx7814: anx7814@38 {
>                 compatible = "analogix,anx7814";
>                 reg = <0x38>;
>                 pd-gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
>                 reset-gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
>         };
>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
> ---
>  .../devicetree/bindings/video/bridge/anx7814.txt   | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/video/bridge/anx7814.txt
>
> diff --git a/Documentation/devicetree/bindings/video/bridge/anx7814.txt b/Documentation/devicetree/bindings/video/bridge/anx7814.txt
> new file mode 100644
> index 0000000..a8cc746
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/video/bridge/anx7814.txt
> @@ -0,0 +1,22 @@
> +Analogix ANX7814 SlimPort (Full-HD Transmitter)
> +-----------------------------------------------
> +
> +The ANX7814 is an ultra-low power Full-HD (1080p60) SlimPort transmitter
> +designed for portable devices.
> +
> +Required properties:
> +
> + - compatible  : "analogix,anx7814"
> + - reg         : I2C address of the device
> + - pd-gpios    : Which GPIO to use for power down
> + - reset-gpios : Which GPIO to use for reset
> +
> +Example:
> +
> +       anx7814: anx7814@38 {
> +               compatible = "analogix,anx7814";
> +               reg = <0x38>;
> +               pd-gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
> +               reset-gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
> +       };
> +
> --
> 2.1.0
>

I saw after sending the series that there was some discussion here,
let me paste to not forget it.

> > No ports needed for describing data connections?
>
> IMHO I'm not sure if this is applicable here, in this case the bridge
> is transparent so it's not required another device node. For example,
> I've an evaluation board, whre I connect in one side an HDMI input
> signal an in the other side a DP monitor, the driver only configures
> the chip and waits for different events (cable plug, cable unplug, etc
> ..)

But what if the chip is connected to a display controller, for instance to the
HDMI output of an SoC ? Is that a use case for the hardware ?
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[PATCHv3 3/3] drm: bridge: anx78xx: Add anx78xx driver support by analogix.

[Enric Balletbo i Serra]

At the moment it only supports ANX7814.

The ANX7814 is an ultra-low power Full-HD (1080p60) SlimPort transmitter
designed for portable devices.

This driver adds initial support and supports HDMI to DP pass-through mode.

Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
---
 drivers/gpu/drm/bridge/Kconfig                   |    2 +
 drivers/gpu/drm/bridge/Makefile                  |    1 +
 drivers/gpu/drm/bridge/anx78xx/Kconfig           |    7 +
 drivers/gpu/drm/bridge/anx78xx/Makefile          |    4 +
 drivers/gpu/drm/bridge/anx78xx/anx78xx.h         |   44 +
 drivers/gpu/drm/bridge/anx78xx/anx78xx_main.c    |  241 ++
 drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c | 3198 ++++++++++++++++++++++
 drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.h |  215 ++
 drivers/gpu/drm/bridge/anx78xx/slimport_tx_reg.h |  786 ++++++
 9 files changed, 4498 insertions(+)
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/Kconfig
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/Makefile
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/anx78xx.h
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/anx78xx_main.c
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.h
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/slimport_tx_reg.h

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 2de52a5..aa6fe12 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -29,4 +29,6 @@ config DRM_PARADE_PS8622
 	---help---
 	  Parade eDP-LVDS bridge chip driver.
 
+source "drivers/gpu/drm/bridge/anx78xx/Kconfig"
+
 endmenu
diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
index e2eef1c..e5bd38b 100644
--- a/drivers/gpu/drm/bridge/Makefile
+++ b/drivers/gpu/drm/bridge/Makefile
@@ -3,3 +3,4 @@ ccflags-y := -Iinclude/drm
 obj-$(CONFIG_DRM_DW_HDMI) += dw_hdmi.o
 obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o
 obj-$(CONFIG_DRM_PARADE_PS8622) += parade-ps8622.o
+obj-$(CONFIG_DRM_ANX78XX) += anx78xx/
diff --git a/drivers/gpu/drm/bridge/anx78xx/Kconfig b/drivers/gpu/drm/bridge/anx78xx/Kconfig
new file mode 100644
index 0000000..08f9c08
--- /dev/null
+++ b/drivers/gpu/drm/bridge/anx78xx/Kconfig
@@ -0,0 +1,7 @@
+config DRM_ANX78XX
+	tristate "Analogix ANX78XX bridge"
+	help
+        	ANX78XX is a HD video transmitter chip over micro-USB
+		connector for smartphone device.
+
+
diff --git a/drivers/gpu/drm/bridge/anx78xx/Makefile b/drivers/gpu/drm/bridge/anx78xx/Makefile
new file mode 100644
index 0000000..a843733
--- /dev/null
+++ b/drivers/gpu/drm/bridge/anx78xx/Makefile
@@ -0,0 +1,4 @@
+obj-${CONFIG_DRM_ANX78XX} :=  anx78xx.o
+
+anx78xx-y += anx78xx_main.o
+anx78xx-y += slimport_tx_drv.o
diff --git a/drivers/gpu/drm/bridge/anx78xx/anx78xx.h b/drivers/gpu/drm/bridge/anx78xx/anx78xx.h
new file mode 100644
index 0000000..4f6dd1d
--- /dev/null
+++ b/drivers/gpu/drm/bridge/anx78xx/anx78xx.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright(c) 2015, Analogix Semiconductor. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ */
+
+#ifndef __ANX78xx_H
+#define __ANX78xx_H
+
+#include <linux/i2c.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/gpio/consumer.h>
+
+#define AUX_ERR  1
+#define AUX_OK   0
+
+struct anx78xx_platform_data {
+	struct gpio_desc *gpiod_pd;
+	struct gpio_desc *gpiod_reset;
+	spinlock_t lock;
+};
+
+struct anx78xx {
+	struct i2c_client *client;
+	struct anx78xx_platform_data *pdata;
+	struct delayed_work work;
+	struct workqueue_struct *workqueue;
+	struct mutex lock;
+};
+
+void anx78xx_poweron(struct anx78xx *data);
+void anx78xx_poweroff(struct anx78xx *data);
+
+#endif
diff --git a/drivers/gpu/drm/bridge/anx78xx/anx78xx_main.c b/drivers/gpu/drm/bridge/anx78xx/anx78xx_main.c
new file mode 100644
index 0000000..b92d2bc
--- /dev/null
+++ b/drivers/gpu/drm/bridge/anx78xx/anx78xx_main.c
@@ -0,0 +1,241 @@
+/*
+ * Copyright(c) 2015, Analogix Semiconductor. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ */
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/err.h>
+#include <linux/async.h>
+#include <linux/of_gpio.h>
+#include <linux/of_platform.h>
+#include <linux/delay.h>
+
+#include "anx78xx.h"
+#include "slimport_tx_drv.h"
+
+void anx78xx_poweron(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	struct anx78xx_platform_data *pdata = anx78xx->pdata;
+
+	gpiod_set_value_cansleep(pdata->gpiod_reset, 0);
+	usleep_range(1000, 2000);
+
+	gpiod_set_value_cansleep(pdata->gpiod_pd, 0);
+	usleep_range(1000, 2000);
+
+	gpiod_set_value_cansleep(pdata->gpiod_reset, 1);
+
+	dev_dbg(dev, "power on\n");
+}
+
+void anx78xx_poweroff(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	struct anx78xx_platform_data *pdata = anx78xx->pdata;
+
+	gpiod_set_value_cansleep(pdata->gpiod_reset, 0);
+	usleep_range(1000, 2000);
+
+	gpiod_set_value_cansleep(pdata->gpiod_pd, 1);
+	usleep_range(1000, 2000);
+
+	dev_dbg(dev, "power down\n");
+}
+
+static int anx78xx_init_gpio(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	struct anx78xx_platform_data *pdata = anx78xx->pdata;
+	int ret;
+
+	/* gpio for chip power down */
+	pdata->gpiod_pd = devm_gpiod_get(dev, "pd", GPIOD_OUT_HIGH);
+	if (IS_ERR(pdata->gpiod_pd)) {
+		dev_err(dev, "unable to claim pd gpio\n");
+		ret = PTR_ERR(pdata->gpiod_pd);
+		return ret;
+	}
+
+	/* gpio for chip reset */
+	pdata->gpiod_reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(pdata->gpiod_reset)) {
+		dev_err(dev, "unable to claim reset gpio\n");
+		ret = PTR_ERR(pdata->gpiod_reset);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int anx78xx_system_init(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	int ret;
+
+	ret = sp_chip_detect(anx78xx);
+	if (ret == 0) {
+		anx78xx_poweroff(anx78xx);
+		dev_err(dev, "failed to detect anx78xx\n");
+		return -ENODEV;
+	}
+
+	sp_tx_variable_init();
+	return 0;
+}
+
+static void anx78xx_work_func(struct work_struct *work)
+{
+	struct anx78xx *anx78xx = container_of(work, struct anx78xx,
+					       work.work);
+	int workqueu_timer = 0;
+
+	if (sp_tx_cur_states() >= STATE_PLAY_BACK)
+		workqueu_timer = 500;
+	else
+		workqueu_timer = 100;
+	mutex_lock(&anx78xx->lock);
+	sp_main_process(anx78xx);
+	mutex_unlock(&anx78xx->lock);
+	queue_delayed_work(anx78xx->workqueue, &anx78xx->work,
+			   msecs_to_jiffies(workqueu_timer));
+}
+
+static int anx78xx_i2c_probe(struct i2c_client *client,
+			     const struct i2c_device_id *id)
+{
+	struct anx78xx *anx78xx;
+	int ret;
+
+	if (!i2c_check_functionality(client->adapter,
+		I2C_FUNC_SMBUS_I2C_BLOCK)) {
+		dev_err(&client->dev, "i2c bus does not support the device\n");
+		return -ENODEV;
+	}
+
+	anx78xx = devm_kzalloc(&client->dev,
+			sizeof(struct anx78xx),
+			GFP_KERNEL);
+	if (!anx78xx)
+		return -ENOMEM;
+
+	anx78xx->pdata = devm_kzalloc(&client->dev,
+			sizeof(struct anx78xx_platform_data),
+			GFP_KERNEL);
+	if (!anx78xx->pdata)
+		return -ENOMEM;
+
+	anx78xx->client = client;
+
+	i2c_set_clientdata(client, anx78xx);
+
+	mutex_init(&anx78xx->lock);
+
+	ret = anx78xx_init_gpio(anx78xx);
+	if (ret) {
+		dev_err(&client->dev, "failed to initialize gpios\n");
+		return ret;
+	}
+
+	INIT_DELAYED_WORK(&anx78xx->work, anx78xx_work_func);
+
+	anx78xx->workqueue = create_singlethread_workqueue("anx78xx_work");
+	if (anx78xx->workqueue == NULL) {
+		dev_err(&client->dev, "failed to create work queue\n");
+		return -ENOMEM;
+	}
+
+	ret = anx78xx_system_init(anx78xx);
+	if (ret) {
+		dev_err(&client->dev, "failed to initialize anx78xx\n");
+		goto cleanup;
+	}
+
+	/* enable driver */
+	queue_delayed_work(anx78xx->workqueue, &anx78xx->work, 0);
+
+	return 0;
+
+cleanup:
+	destroy_workqueue(anx78xx->workqueue);
+	return ret;
+}
+
+static int anx78xx_i2c_remove(struct i2c_client *client)
+{
+	struct anx78xx *anx78xx = i2c_get_clientdata(client);
+
+	destroy_workqueue(anx78xx->workqueue);
+
+	return 0;
+}
+
+static int anx78xx_i2c_suspend(struct device *dev)
+{
+	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
+	struct anx78xx *anx78xx = i2c_get_clientdata(client);
+
+	cancel_delayed_work_sync(&anx78xx->work);
+	flush_workqueue(anx78xx->workqueue);
+	anx78xx_poweroff(anx78xx);
+	sp_tx_clean_state_machine();
+
+	return 0;
+}
+
+static int anx78xx_i2c_resume(struct device *dev)
+{
+	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
+	struct anx78xx *anx78xx = i2c_get_clientdata(client);
+
+	queue_delayed_work(anx78xx->workqueue, &anx78xx->work, 0);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(anx78xx_i2c_pm_ops,
+			anx78xx_i2c_suspend, anx78xx_i2c_resume);
+
+static const struct i2c_device_id anx78xx_id[] = {
+	{"anx7814", 0},
+	{ /* sentinel */ }
+};
+
+MODULE_DEVICE_TABLE(i2c, anx78xx_id);
+
+static const struct of_device_id anx78xx_match_table[] = {
+	{.compatible = "analogix,anx7814",},
+	{ /* sentinel */ },
+};
+
+MODULE_DEVICE_TABLE(of, anx78xx_match_table);
+
+static struct i2c_driver anx78xx_driver = {
+	.driver = {
+		   .name = "anx7814",
+		   .pm = &anx78xx_i2c_pm_ops,
+		   .of_match_table = of_match_ptr(anx78xx_match_table),
+		   },
+	.probe = anx78xx_i2c_probe,
+	.remove = anx78xx_i2c_remove,
+	.id_table = anx78xx_id,
+};
+
+module_i2c_driver(anx78xx_driver);
+
+MODULE_DESCRIPTION("Slimport transmitter ANX78XX driver");
+MODULE_AUTHOR("Junhua Xia <jxia@analogixsemi.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION("1.1");
diff --git a/drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c b/drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c
new file mode 100644
index 0000000..1be7f69
--- /dev/null
+++ b/drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c
@@ -0,0 +1,3198 @@
+/*
+ * Copyright(c) 2015, Analogix Semiconductor. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ */
+#include <linux/delay.h>
+#include <linux/types.h>
+
+#include "anx78xx.h"
+#include "slimport_tx_drv.h"
+
+#define XTAL_CLK_M10	pxtal_data[XTAL_27M].xtal_clk_m10
+#define XTAL_CLK	pxtal_data[XTAL_27M].xtal_clk
+
+struct slimport {
+	int	block_en;	/* HDCP control enable/ disable from AP */
+
+	u8	tx_test_bw;
+	bool	tx_test_lt;
+	bool	tx_test_edid;
+
+	u8	changed_bandwidth;
+
+	u8	hdmi_dvi_status;
+	u8	need_clean_status;
+
+	u8	ds_vid_stb_cntr;
+	u8	hdcp_fail_count;
+
+	u8	edid_break;
+	u8	edid_checksum;
+	u8	edid_blocks[256];
+
+	u8	read_edid_flag;
+
+	u8	down_sample_en;
+
+	struct packet_avi	tx_packet_avi;
+	struct packet_spd	tx_packet_spd;
+	struct packet_mpeg	tx_packet_mpeg;
+	struct audio_info_frame	tx_audioinfoframe;
+
+	struct common_int	common_int_status;
+	struct hdmi_rx_int	hdmi_rx_int_status;
+
+	enum sp_tx_state		tx_system_state;
+	enum sp_tx_state		tx_system_state_bak;
+	enum audio_output_status	tx_ao_state;
+	enum video_output_status	tx_vo_state;
+	enum sink_connection_status	tx_sc_state;
+	enum sp_tx_lt_status		tx_lt_state;
+	enum hdcp_status		hcdp_state;
+};
+
+static struct slimport sp;
+
+static const u16 chipid_list[] = {
+	0x7818,
+	0x7816,
+	0x7814,
+	0x7812,
+	0x7810,
+	0x7806,
+	0x7802
+};
+
+static void sp_hdmi_rx_new_vsi_int(struct anx78xx *anx78xx);
+static u8 sp_hdcp_cap_check(struct anx78xx *anx78xx);
+static void sp_tx_show_information(struct anx78xx *anx78xx);
+static void sp_print_sys_state(struct anx78xx *anx78xx, u8 ss);
+
+static int sp_read_reg(struct anx78xx *anx78xx, u8 slave_addr,
+		u8 offset, u8 *buf)
+{
+	u8 ret;
+	struct i2c_client *client = anx78xx->client;
+
+	client->addr = (slave_addr >> 1);
+
+	ret = i2c_smbus_read_byte_data(client, offset);
+	if (ret < 0) {
+		dev_err(&client->dev, "failed to read i2c addr=%x\n",
+			slave_addr);
+		return ret;
+	}
+
+	*buf = ret;
+
+	return 0;
+}
+
+static int sp_write_reg(struct anx78xx *anx78xx, u8 slave_addr,
+		u8 offset, u8 value)
+{
+	int ret;
+	struct i2c_client *client = anx78xx->client;
+
+	client->addr = (slave_addr >> 1);
+
+	ret = i2c_smbus_write_byte_data(client, offset, value);
+	if (ret < 0)
+		dev_err(&client->dev, "failed to write i2c addr=%x\n",
+			slave_addr);
+
+	return ret;
+}
+
+static u8 sp_i2c_read_byte(struct anx78xx *anx78xx,
+		u8 dev, u8 offset)
+{
+	u8 ret;
+
+	sp_read_reg(anx78xx, dev, offset, &ret);
+	return ret;
+}
+
+static void sp_reg_bit_ctl(struct anx78xx *anx78xx, u8 addr, u8 offset,
+			u8 data, bool enable)
+{
+	u8 c;
+
+	sp_read_reg(anx78xx, addr, offset, &c);
+	if (enable) {
+		if ((c & data) != data) {
+			c |= data;
+			sp_write_reg(anx78xx, addr, offset, c);
+		}
+	} else
+		if ((c & data) == data) {
+			c &= ~data;
+			sp_write_reg(anx78xx, addr, offset, c);
+		}
+}
+
+static inline void sp_write_reg_or(struct anx78xx *anx78xx, u8 address,
+			u8 offset, u8 mask)
+{
+	sp_write_reg(anx78xx, address, offset,
+		sp_i2c_read_byte(anx78xx, address, offset) | mask);
+}
+
+static inline void sp_write_reg_and(struct anx78xx *anx78xx, u8 address,
+			u8 offset, u8 mask)
+{
+	sp_write_reg(anx78xx, address, offset,
+		sp_i2c_read_byte(anx78xx, address, offset) & mask);
+}
+
+static inline void sp_write_reg_and_or(struct anx78xx *anx78xx, u8 address,
+			u8 offset, u8 and_mask, u8 or_mask)
+{
+	sp_write_reg(anx78xx, address, offset,
+	  (sp_i2c_read_byte(anx78xx, address, offset) & and_mask) | or_mask);
+}
+
+static inline void sp_write_reg_or_and(struct anx78xx *anx78xx, u8 address,
+			 u8 offset, u8 or_mask, u8 and_mask)
+{
+	sp_write_reg(anx78xx, address, offset,
+	  (sp_i2c_read_byte(anx78xx, address, offset) | or_mask) & and_mask);
+}
+
+static inline void sp_tx_video_mute(struct anx78xx *anx78xx, bool enable)
+{
+	sp_reg_bit_ctl(anx78xx, TX_P2, VID_CTRL1, VIDEO_MUTE, enable);
+}
+
+static inline void hdmi_rx_mute_audio(struct anx78xx *anx78xx, bool enable)
+{
+	sp_reg_bit_ctl(anx78xx, RX_P0, RX_MUTE_CTRL, AUD_MUTE, enable);
+}
+
+static inline void hdmi_rx_mute_video(struct anx78xx *anx78xx, bool enable)
+{
+	sp_reg_bit_ctl(anx78xx, RX_P0, RX_MUTE_CTRL, VID_MUTE, enable);
+}
+
+static inline void sp_tx_addronly_set(struct anx78xx *anx78xx, bool enable)
+{
+	sp_reg_bit_ctl(anx78xx, TX_P0, AUX_CTRL2, ADDR_ONLY_BIT, enable);
+}
+
+static inline void sp_tx_set_link_bw(struct anx78xx *anx78xx, u8 bw)
+{
+	sp_write_reg(anx78xx, TX_P0, SP_TX_LINK_BW_SET_REG, bw);
+}
+
+static inline u8 sp_tx_get_link_bw(struct anx78xx *anx78xx)
+{
+	return sp_i2c_read_byte(anx78xx, TX_P0, SP_TX_LINK_BW_SET_REG);
+}
+
+static inline bool sp_tx_get_pll_lock_status(struct anx78xx *anx78xx)
+{
+	u8 temp;
+
+	temp = sp_i2c_read_byte(anx78xx, TX_P0, TX_DEBUG1);
+
+	return (temp & DEBUG_PLL_LOCK) != 0 ? true : false;
+}
+
+static inline void gen_m_clk_with_downspeading(struct anx78xx *anx78xx)
+{
+	sp_write_reg_or(anx78xx, TX_P0, SP_TX_M_CALCU_CTRL, M_GEN_CLK_SEL);
+}
+
+static inline void gen_m_clk_without_downspeading(struct anx78xx *anx78xx)
+{
+	sp_write_reg_and(anx78xx, TX_P0, SP_TX_M_CALCU_CTRL, (~M_GEN_CLK_SEL));
+}
+
+static inline void hdmi_rx_set_hpd(struct anx78xx *anx78xx, bool enable)
+{
+	if (enable)
+		sp_write_reg_or(anx78xx, TX_P2, SP_TX_VID_CTRL3_REG, HPD_OUT);
+	else
+		sp_write_reg_and(anx78xx, TX_P2, SP_TX_VID_CTRL3_REG, ~HPD_OUT);
+}
+
+static inline void hdmi_rx_set_termination(struct anx78xx *anx78xx,
+				bool enable)
+{
+	if (enable)
+		sp_write_reg_and(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG7,
+				~TERM_PD);
+	else
+		sp_write_reg_or(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG7,
+				TERM_PD);
+}
+
+static inline void sp_tx_clean_hdcp_status(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	sp_write_reg(anx78xx, TX_P0, TX_HDCP_CTRL0, 0x03);
+	sp_write_reg_or(anx78xx, TX_P0, TX_HDCP_CTRL0, RE_AUTH);
+	usleep_range(2000, 4000);
+	dev_dbg(dev, "sp_tx_clean_hdcp_status\n");
+}
+
+static inline void sp_tx_link_phy_initialization(struct anx78xx *anx78xx)
+{
+	sp_write_reg(anx78xx, TX_P2, SP_TX_ANALOG_CTRL0, 0x02);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG0, 0x01);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG10, 0x00);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG1, 0x03);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG11, 0x00);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG2, 0x07);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG12, 0x00);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG3, 0x7f);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG13, 0x00);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG4, 0x71);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG14, 0x0c);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG5, 0x6b);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG15, 0x42);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG6, 0x7f);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG16, 0x1e);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG7, 0x73);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG17, 0x3e);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG8, 0x7f);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG18, 0x72);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG9, 0x7F);
+	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG19, 0x7e);
+}
+
+static inline void sp_tx_set_sys_state(struct anx78xx *anx78xx, u8 ss)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	dev_dbg(dev, "set: clean_status: %x,\n ", (u16)sp.need_clean_status);
+
+	if ((sp.tx_system_state >= STATE_LINK_TRAINING)
+	   && (ss < STATE_LINK_TRAINING))
+		sp_write_reg_or(anx78xx, TX_P0, SP_TX_ANALOG_PD_REG, CH0_PD);
+
+	sp.tx_system_state_bak = sp.tx_system_state;
+	sp.tx_system_state = ss;
+	sp.need_clean_status = 1;
+	sp_print_sys_state(anx78xx, sp.tx_system_state);
+}
+
+static inline void reg_hardware_reset(struct anx78xx *anx78xx)
+{
+	sp_write_reg_or(anx78xx, TX_P2, SP_TX_RST_CTRL_REG, HW_RST);
+	sp_tx_clean_state_machine();
+	sp_tx_set_sys_state(anx78xx, STATE_SP_INITIALIZED);
+	msleep(500);
+}
+
+static inline void write_dpcd_addr(struct anx78xx *anx78xx, u8 addrh,
+			u8 addrm, u8 addrl)
+{
+	u8 temp;
+
+	if (sp_i2c_read_byte(anx78xx, TX_P0, AUX_ADDR_7_0) != addrl)
+		sp_write_reg(anx78xx, TX_P0, AUX_ADDR_7_0, addrl);
+
+	if (sp_i2c_read_byte(anx78xx, TX_P0, AUX_ADDR_15_8) != addrm)
+		sp_write_reg(anx78xx, TX_P0, AUX_ADDR_15_8, addrm);
+
+	sp_read_reg(anx78xx, TX_P0, AUX_ADDR_19_16, &temp);
+
+	if ((temp & 0x0F) != (addrh & 0x0F))
+		sp_write_reg(anx78xx, TX_P0, AUX_ADDR_19_16,
+			(temp  & 0xF0) | addrh);
+}
+
+static inline void goto_next_system_state(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	dev_dbg(dev, "next: clean_status: %x,\n ", (u16)sp.need_clean_status);
+
+	sp.tx_system_state_bak = sp.tx_system_state;
+	sp.tx_system_state++;
+	sp_print_sys_state(anx78xx, sp.tx_system_state);
+}
+
+static inline void redo_cur_system_state(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	dev_dbg(dev, "redo: clean_status: %x,\n ", (u16)sp.need_clean_status);
+
+	sp.need_clean_status = 1;
+	sp.tx_system_state_bak = sp.tx_system_state;
+	sp_print_sys_state(anx78xx, sp.tx_system_state);
+}
+
+static inline void system_state_change_with_case(struct anx78xx *anx78xx,
+				u8 status)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	if (sp.tx_system_state >= status) {
+		dev_dbg(dev, "change_case: clean_status: %xm,\n ",
+			(u16)sp.need_clean_status);
+
+		if ((sp.tx_system_state >= STATE_LINK_TRAINING)
+				&& (status < STATE_LINK_TRAINING))
+			sp_write_reg_or(anx78xx, TX_P0, SP_TX_ANALOG_PD_REG,
+					CH0_PD);
+
+		sp.need_clean_status = 1;
+		sp.tx_system_state_bak = sp.tx_system_state;
+		sp.tx_system_state = status;
+		sp_print_sys_state(anx78xx, sp.tx_system_state);
+	}
+}
+
+static void sp_wait_aux_op_finish(struct anx78xx *anx78xx, u8 *err_flag)
+{
+	u8 cnt;
+	u8 c;
+	struct device *dev = &anx78xx->client->dev;
+
+	*err_flag = 0;
+	cnt = 150;
+	while (sp_i2c_read_byte(anx78xx, TX_P0, AUX_CTRL2) & AUX_OP_EN) {
+		usleep_range(2000, 4000);
+		if ((cnt--) == 0) {
+			dev_err(dev, "aux operate failed!\n");
+			*err_flag = 1;
+			break;
+		}
+	}
+
+	sp_read_reg(anx78xx, TX_P0, SP_TX_AUX_STATUS, &c);
+	if (c & 0x0F) {
+		dev_err(dev, "wait aux operation status %.2x\n", (u16)c);
+		*err_flag = 1;
+	}
+}
+
+static void sp_print_sys_state(struct anx78xx *anx78xx, u8 ss)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	switch (ss) {
+	case STATE_WAITTING_CABLE_PLUG:
+		dev_dbg(dev, "-STATE_WAITTING_CABLE_PLUG-\n");
+		break;
+	case STATE_SP_INITIALIZED:
+		dev_dbg(dev, "-STATE_SP_INITIALIZED-\n");
+		break;
+	case STATE_SINK_CONNECTION:
+		dev_dbg(dev, "-STATE_SINK_CONNECTION-\n");
+		break;
+	case STATE_PARSE_EDID:
+		dev_dbg(dev, "-STATE_PARSE_EDID-\n");
+		break;
+	case STATE_LINK_TRAINING:
+		dev_dbg(dev, "-STATE_LINK_TRAINING-\n");
+		break;
+	case STATE_VIDEO_OUTPUT:
+		dev_dbg(dev, "-STATE_VIDEO_OUTPUT-\n");
+		break;
+	case STATE_HDCP_AUTH:
+		dev_dbg(dev, "-STATE_HDCP_AUTH-\n");
+		break;
+	case STATE_AUDIO_OUTPUT:
+		dev_dbg(dev, "-STATE_AUDIO_OUTPUT-\n");
+		break;
+	case STATE_PLAY_BACK:
+		dev_dbg(dev, "-STATE_PLAY_BACK-\n");
+		break;
+	default:
+		dev_err(dev, "system state is error1\n");
+		break;
+	}
+}
+
+static void sp_tx_rst_aux(struct anx78xx *anx78xx)
+{
+	sp_write_reg_or(anx78xx, TX_P2, RST_CTRL2, AUX_RST);
+	sp_write_reg_and(anx78xx, TX_P2, RST_CTRL2, ~AUX_RST);
+}
+
+static u8 sp_tx_aux_dpcdread_bytes(struct anx78xx *anx78xx, u8 addrh,
+		u8 addrm, u8 addrl, u8 ccount, u8 *pbuf)
+{
+	u8 c, c1, i;
+	u8 bok;
+	struct device *dev = &anx78xx->client->dev;
+
+	sp_write_reg(anx78xx, TX_P0, BUF_DATA_COUNT, 0x80);
+	c = ((ccount - 1) << 4) | 0x09;
+	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, c);
+	write_dpcd_addr(anx78xx, addrh, addrm, addrl);
+	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, AUX_OP_EN);
+	usleep_range(2000, 4000);
+
+	sp_wait_aux_op_finish(anx78xx, &bok);
+	if (bok == AUX_ERR) {
+		dev_err(dev, "aux read failed\n");
+		sp_read_reg(anx78xx, TX_P2, SP_TX_INT_STATUS1, &c);
+		sp_read_reg(anx78xx, TX_P0, TX_DEBUG1, &c1);
+		if (c1 & POLLING_EN) {
+			if (c & POLLING_ERR)
+				sp_tx_rst_aux(anx78xx);
+		} else
+			sp_tx_rst_aux(anx78xx);
+		return AUX_ERR;
+	}
+
+	for (i = 0; i < ccount; i++) {
+		sp_read_reg(anx78xx, TX_P0, BUF_DATA_0 + i, &c);
+		*(pbuf + i) = c;
+		if (i >= MAX_BUF_CNT)
+			break;
+	}
+	return AUX_OK;
+}
+
+static u8 sp_tx_aux_dpcdwrite_bytes(struct anx78xx *anx78xx, u8 addrh,
+		u8 addrm, u8 addrl, u8 ccount, u8 *pbuf)
+{
+	u8 c, i, ret;
+
+	c =  ((ccount - 1) << 4) | 0x08;
+	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, c);
+	write_dpcd_addr(anx78xx, addrh, addrm, addrl);
+	for (i = 0; i < ccount; i++) {
+		c = *pbuf;
+		pbuf++;
+		sp_write_reg(anx78xx, TX_P0, BUF_DATA_0 + i, c);
+
+		if (i >= 15)
+			break;
+	}
+	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, AUX_OP_EN);
+	sp_wait_aux_op_finish(anx78xx, &ret);
+	return ret;
+}
+
+static u8 sp_tx_aux_dpcdwrite_byte(struct anx78xx *anx78xx, u8 addrh,
+		u8 addrm, u8 addrl, u8 data1)
+{
+	u8 ret;
+
+	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x08);
+	write_dpcd_addr(anx78xx, addrh, addrm, addrl);
+	sp_write_reg(anx78xx, TX_P0, BUF_DATA_0, data1);
+	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, AUX_OP_EN);
+	sp_wait_aux_op_finish(anx78xx, &ret);
+	return ret;
+}
+
+static void sp_block_power_ctrl(struct anx78xx *anx78xx,
+		enum sp_tx_power_block sp_tx_pd_block, u8 power)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	if (power == SP_POWER_ON)
+		sp_write_reg_and(anx78xx, TX_P2, SP_POWERD_CTRL_REG,
+			~sp_tx_pd_block);
+	else
+		sp_write_reg_or(anx78xx, TX_P2, SP_POWERD_CTRL_REG,
+			sp_tx_pd_block);
+
+	 dev_dbg(dev, "sp_tx_power_on: %.2x\n", (u16)sp_tx_pd_block);
+}
+
+static void sp_vbus_power_off(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	int i;
+
+	for (i = 0; i < 5; i++) {
+		sp_write_reg_and(anx78xx, TX_P2, TX_PLL_FILTER5,
+				(~P5V_PROTECT_PD & ~SHORT_PROTECT_PD));
+		sp_write_reg_or(anx78xx, TX_P2, TX_PLL_FILTER, V33_SWITCH_ON);
+		if (!(sp_i2c_read_byte(anx78xx, TX_P2, TX_PLL_FILTER5)
+		    & 0xc0)) {
+			dev_dbg(dev, "3.3V output enabled\n");
+			break;
+		}
+
+		dev_dbg(dev, "VBUS power can not be supplied\n");
+	}
+}
+
+void sp_tx_clean_state_machine(void)
+{
+	sp.tx_system_state = STATE_WAITTING_CABLE_PLUG;
+	sp.tx_system_state_bak = STATE_WAITTING_CABLE_PLUG;
+	sp.tx_sc_state = SC_INIT;
+	sp.tx_lt_state = LT_INIT;
+	sp.hcdp_state = HDCP_CAPABLE_CHECK;
+	sp.tx_vo_state = VO_WAIT_VIDEO_STABLE;
+	sp.tx_ao_state = AO_INIT;
+}
+
+u8 sp_tx_cur_states(void)
+{
+	return sp.tx_system_state;
+}
+
+void sp_tx_variable_init(void)
+{
+	u16 i;
+
+	sp.block_en = 1;
+
+	sp.tx_system_state = STATE_WAITTING_CABLE_PLUG;
+	sp.tx_system_state_bak = STATE_WAITTING_CABLE_PLUG;
+
+	sp.edid_break = 0;
+	sp.read_edid_flag = 0;
+	sp.edid_checksum = 0;
+	for (i = 0; i < 256; i++)
+		sp.edid_blocks[i] = 0;
+
+	sp.tx_lt_state = LT_INIT;
+	sp.hcdp_state = HDCP_CAPABLE_CHECK;
+	sp.need_clean_status = 0;
+	sp.tx_sc_state = SC_INIT;
+	sp.tx_vo_state = VO_WAIT_VIDEO_STABLE;
+	sp.tx_ao_state = AO_INIT;
+	sp.changed_bandwidth = LINK_5P4G;
+	sp.hdmi_dvi_status = HDMI_MODE;
+
+	sp.tx_test_lt = 0;
+	sp.tx_test_bw = 0;
+	sp.tx_test_edid = 0;
+
+	sp.ds_vid_stb_cntr = 0;
+	sp.hdcp_fail_count = 0;
+
+}
+
+static void hdmi_rx_tmds_phy_initialization(struct anx78xx *anx78xx)
+{
+	sp_write_reg(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG2, 0xa9);
+	sp_write_reg(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG7, 0x80);
+
+	sp_write_reg(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG1, 0x90);
+	sp_write_reg(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG6, 0x92);
+	sp_write_reg(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG20, 0xf2);
+}
+
+static void hdmi_rx_initialization(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	sp_write_reg(anx78xx, RX_P0, RX_MUTE_CTRL, AUD_MUTE | VID_MUTE);
+	sp_write_reg_or(anx78xx, RX_P0, RX_CHIP_CTRL,
+		MAN_HDMI5V_DET | PLLLOCK_CKDT_EN | DIGITAL_CKDT_EN);
+
+	sp_write_reg_or(anx78xx, RX_P0, RX_SRST, HDCP_MAN_RST | SW_MAN_RST |
+		TMDS_RST | VIDEO_RST);
+	sp_write_reg_and(anx78xx, RX_P0, RX_SRST, ~HDCP_MAN_RST &
+		~SW_MAN_RST & ~TMDS_RST & ~VIDEO_RST);
+
+	sp_write_reg_or(anx78xx, RX_P0, RX_AEC_EN0, AEC_EN06 | AEC_EN05);
+	sp_write_reg_or(anx78xx, RX_P0, RX_AEC_EN2, AEC_EN21);
+	sp_write_reg_or(anx78xx, RX_P0, RX_AEC_CTRL, AVC_EN | AAC_OE | AAC_EN);
+
+	sp_write_reg_and(anx78xx, RX_P0, RX_SYS_PWDN1, ~PWDN_CTRL);
+
+	sp_write_reg_or(anx78xx, RX_P0, RX_VID_DATA_RNG, R2Y_INPUT_LIMIT);
+	sp_write_reg(anx78xx, RX_P0, 0x65, 0xc4);
+	sp_write_reg(anx78xx, RX_P0, 0x66, 0x18);
+
+	/* enable DDC stretch */
+	sp_write_reg(anx78xx, TX_P0, TX_EXTRA_ADDR, 0x50);
+
+	hdmi_rx_tmds_phy_initialization(anx78xx);
+	hdmi_rx_set_hpd(anx78xx, 0);
+	hdmi_rx_set_termination(anx78xx, 0);
+	dev_dbg(dev, "HDMI Rx is initialized...\n");
+}
+
+struct anx78xx_clock_data const pxtal_data[XTAL_CLK_NUM] = {
+	{19, 192},
+	{24, 240},
+	{25, 250},
+	{26, 260},
+	{27, 270},
+	{38, 384},
+	{52, 520},
+	{27, 270},
+};
+
+static void xtal_clk_sel(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	dev_dbg(dev, "define XTAL_CLK:  %x\n ", (u16)XTAL_27M);
+	sp_write_reg_and_or(anx78xx, TX_P2,
+			TX_ANALOG_DEBUG2, (~0x3c), 0x3c & (XTAL_27M << 2));
+	sp_write_reg(anx78xx, TX_P0, 0xEC, (u8)(((u16)XTAL_CLK_M10)));
+	sp_write_reg(anx78xx, TX_P0, 0xED,
+		(u8)(((u16)XTAL_CLK_M10 & 0xFF00) >> 2) | XTAL_CLK);
+
+	sp_write_reg(anx78xx, TX_P0,
+			I2C_GEN_10US_TIMER0, (u8)(((u16)XTAL_CLK_M10)));
+	sp_write_reg(anx78xx, TX_P0, I2C_GEN_10US_TIMER1,
+			(u8)(((u16)XTAL_CLK_M10 & 0xFF00) >> 8));
+	sp_write_reg(anx78xx, TX_P0, 0xBF, (u8)(((u16)XTAL_CLK - 1)));
+
+	sp_write_reg_and_or(anx78xx, RX_P0, 0x49, 0x07,
+			(u8)(((((u16)XTAL_CLK) >> 1) - 2) << 3));
+
+}
+
+void sp_tx_initialization(struct anx78xx *anx78xx)
+{
+	sp_write_reg(anx78xx, TX_P0, AUX_CTRL2, 0x30);
+	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, 0x08);
+
+	sp_write_reg_and(anx78xx, TX_P0, TX_HDCP_CTRL,
+			(u8)(~AUTO_EN) & (~AUTO_START));
+	sp_write_reg(anx78xx, TX_P0, OTP_KEY_PROTECT1, OTP_PSW1);
+	sp_write_reg(anx78xx, TX_P0, OTP_KEY_PROTECT2, OTP_PSW2);
+	sp_write_reg(anx78xx, TX_P0, OTP_KEY_PROTECT3, OTP_PSW3);
+	sp_write_reg_or(anx78xx, TX_P0, HDCP_KEY_CMD, DISABLE_SYNC_HDCP);
+	sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL8_REG, VID_VRES_TH);
+
+	sp_write_reg(anx78xx, TX_P0, HDCP_AUTO_TIMER, HDCP_AUTO_TIMER_VAL);
+	sp_write_reg_or(anx78xx, TX_P0, TX_HDCP_CTRL, LINK_POLLING);
+
+	sp_write_reg_or(anx78xx, TX_P0, TX_LINK_DEBUG, M_VID_DEBUG);
+	sp_write_reg_or(anx78xx, TX_P2, TX_ANALOG_DEBUG2, POWERON_TIME_1P5MS);
+
+	xtal_clk_sel(anx78xx);
+	sp_write_reg(anx78xx, TX_P0, AUX_DEFER_CTRL, 0x8C);
+
+	sp_write_reg_or(anx78xx, TX_P0, TX_DP_POLLING, AUTO_POLLING_DISABLE);
+	/*
+	 * Short the link intergrity check timer to speed up bstatus
+	 * polling for HDCP CTS item 1A-07
+	 */
+	sp_write_reg(anx78xx, TX_P0, SP_TX_LINK_CHK_TIMER, 0x1d);
+	sp_write_reg_or(anx78xx, TX_P0, TX_MISC, EQ_TRAINING_LOOP);
+
+	sp_write_reg_or(anx78xx, TX_P0, SP_TX_ANALOG_PD_REG, CH0_PD);
+
+	sp_write_reg(anx78xx, TX_P2, SP_TX_INT_CTRL_REG, 0X01);
+	/* disable HDCP mismatch function for VGA dongle */
+	sp_tx_link_phy_initialization(anx78xx);
+	gen_m_clk_with_downspeading(anx78xx);
+
+	sp.down_sample_en = 0;
+}
+
+bool sp_chip_detect(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u16 id;
+	u8 idh = 0, idl = 0;
+	int i;
+
+	anx78xx_poweron(anx78xx);
+
+	/* check chip id */
+	sp_read_reg(anx78xx, TX_P2, SP_TX_DEV_IDL_REG, &idl);
+	sp_read_reg(anx78xx, TX_P2, SP_TX_DEV_IDH_REG, &idh);
+	id = idl | (idh << 8);
+
+	dev_dbg(dev, "CHIPID: ANX%x\n", id & 0xffff);
+
+	for (i = 0; i < sizeof(chipid_list) / sizeof(u16); i++) {
+		if (id == chipid_list[i])
+			return true;
+	}
+
+	return false;
+}
+
+static void sp_waiting_cable_plug_process(struct anx78xx *anx78xx)
+{
+	sp_tx_variable_init();
+	anx78xx_poweron(anx78xx);
+	goto_next_system_state(anx78xx);
+}
+
+/*
+ * Check if it is ANALOGIX dongle.
+ */
+static const u8 ANX_OUI[3] = {0x00, 0x22, 0xB9};
+
+static u8 is_anx_dongle(struct anx78xx *anx78xx)
+{
+	u8 buf[3];
+
+	/* 0x0500~0x0502: BRANCH_IEEE_OUI */
+	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x05, 0x00, 3, buf);
+
+	if (!memcmp(buf, ANX_OUI, 3))
+		return 1;
+
+	return 0;
+}
+
+static void sp_tx_get_rx_bw(struct anx78xx *anx78xx, u8 *bw)
+{
+	if (is_anx_dongle(anx78xx))
+		*bw = LINK_6P75G;	/* just for debug */
+	else
+		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00,
+					DPCD_MAX_LINK_RATE, 1, bw);
+}
+
+static u8 sp_tx_get_cable_type(struct anx78xx *anx78xx,
+			enum cable_type_status det_cable_type_state)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	u8 ds_port_preset;
+	u8 aux_status;
+	u8 data_buf[16];
+	u8 cur_cable_type;
+
+	ds_port_preset = 0;
+	cur_cable_type = DWN_STRM_IS_NULL;
+
+	aux_status = sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00, 0x05, 1,
+					&ds_port_preset);
+
+	dev_dbg(dev, "DPCD 0x005: %x\n", (int)ds_port_preset);
+
+	switch (det_cable_type_state) {
+	case CHECK_AUXCH:
+		if (AUX_OK == aux_status) {
+			sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00, 0, 0x0c,
+					data_buf);
+			det_cable_type_state = GETTED_CABLE_TYPE;
+		} else {
+			dev_err(dev, " AUX access error\n");
+			break;
+		}
+	case GETTED_CABLE_TYPE:
+		switch ((ds_port_preset  & (BIT(1) | BIT(2))) >> 1) {
+		case 0x00:
+			cur_cable_type = DWN_STRM_IS_DIGITAL;
+			dev_dbg(dev, "Downstream is DP dongle.\n");
+			break;
+		case 0x01:
+		case 0x03:
+			cur_cable_type = DWN_STRM_IS_ANALOG;
+			dev_dbg(dev, "Downstream is VGA dongle.\n");
+			break;
+		case 0x02:
+			cur_cable_type = DWN_STRM_IS_HDMI;
+			dev_dbg(dev, "Downstream is HDMI dongle.\n");
+			break;
+		default:
+			cur_cable_type = DWN_STRM_IS_NULL;
+			dev_err(dev, "Downstream can not recognized.\n");
+			break;
+		}
+	default:
+		break;
+	}
+	return cur_cable_type;
+}
+
+static u8 sp_tx_get_dp_connection(struct anx78xx *anx78xx)
+{
+	u8 c;
+
+	if (AUX_OK != sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02,
+				DPCD_SINK_COUNT, 1, &c))
+		return 0;
+
+	if (c & 0x1f) {
+		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00, 0x04, 1, &c);
+		if (c & 0x20) {
+			sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x06, 0x00, 1,
+						&c);
+			/*
+			 * Bit 5 = SET_DN_DEVICE_DP_PWR_5V
+			 * Bit 6 = SET_DN_DEVICE_DP_PWR_12V
+			 * Bit 7 = SET_DN_DEVICE_DP_PWR_18V
+			 */
+			c = c & 0x1F;
+			sp_tx_aux_dpcdwrite_byte(anx78xx, 0x00, 0x06, 0x00,
+						c | 0x20);
+		}
+		return 1;
+	} else
+		return 0;
+}
+
+static u8 sp_tx_get_downstream_connection(struct anx78xx *anx78xx)
+{
+	return sp_tx_get_dp_connection(anx78xx);
+}
+
+static void sp_sink_connection(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	switch (sp.tx_sc_state) {
+	case SC_INIT:
+		sp.tx_sc_state++;
+	case SC_CHECK_CABLE_TYPE:
+	case SC_WAITTING_CABLE_TYPE:
+	default:
+		if (sp_tx_get_cable_type(anx78xx, CHECK_AUXCH) ==
+		   DWN_STRM_IS_NULL) {
+			sp.tx_sc_state++;
+			if (sp.tx_sc_state >= SC_WAITTING_CABLE_TYPE) {
+				sp.tx_sc_state = SC_NOT_CABLE;
+				dev_dbg(dev, "Can not get cable type!\n");
+			}
+			break;
+		}
+
+		sp.tx_sc_state = SC_SINK_CONNECTED;
+	case SC_SINK_CONNECTED:
+		if (sp_tx_get_downstream_connection(anx78xx))
+			goto_next_system_state(anx78xx);
+		break;
+	case SC_NOT_CABLE:
+		sp_vbus_power_off(anx78xx);
+		reg_hardware_reset(anx78xx);
+		break;
+	}
+}
+
+/******************start EDID process********************/
+static void sp_tx_enable_video_input(struct anx78xx *anx78xx, u8 enable)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 c;
+
+	sp_read_reg(anx78xx, TX_P2, VID_CTRL1, &c);
+	if (enable) {
+		c = (c & 0xf7) | VIDEO_EN;
+		sp_write_reg(anx78xx, TX_P2, VID_CTRL1, c);
+		dev_dbg(dev, "Slimport Video is enabled!\n");
+
+	} else {
+		c &= ~VIDEO_EN;
+		sp_write_reg(anx78xx, TX_P2, VID_CTRL1, c);
+		dev_dbg(dev, "Slimport Video is disabled!\n");
+	}
+}
+
+static u8 sp_get_edid_detail(u8 *data_buf)
+{
+	u16 pixclock_edid;
+
+	pixclock_edid = ((((u16)data_buf[1] << 8))
+			| ((u16)data_buf[0] & 0xFF));
+	if (pixclock_edid <= 5300)
+		return LINK_1P62G;
+	else if ((pixclock_edid > 5300) && (pixclock_edid <= 8900))
+		return LINK_2P7G;
+	else if ((pixclock_edid > 8900) && (pixclock_edid <= 18000))
+		return LINK_5P4G;
+	else
+		return LINK_6P75G;
+}
+
+static u8 sp_parse_edid_to_get_bandwidth(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 desc_offset = 0;
+	u8 i, bandwidth, temp;
+
+	bandwidth = LINK_1P62G;
+	temp = LINK_1P62G;
+	i = 0;
+	while (i < 4 && sp.edid_blocks[0x36 + desc_offset] != 0) {
+		temp = sp_get_edid_detail(sp.edid_blocks + 0x36 + desc_offset);
+		dev_dbg(dev, "bandwidth via EDID : %x\n", (u16)temp);
+		if (bandwidth < temp)
+			bandwidth = temp;
+		if (bandwidth > LINK_5P4G)
+			break;
+		desc_offset += 0x12;
+		++i;
+	}
+	return bandwidth;
+}
+
+static void sp_tx_aux_wr(struct anx78xx *anx78xx, u8 offset)
+{
+	sp_write_reg(anx78xx, TX_P0, BUF_DATA_0, offset);
+	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x04);
+	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, AUX_OP_EN);
+	sp_wait_aux_op_finish(anx78xx, &sp.edid_break);
+}
+
+static void sp_tx_aux_rd(struct anx78xx *anx78xx, u8 len_cmd)
+{
+	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, len_cmd);
+	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, AUX_OP_EN);
+	sp_wait_aux_op_finish(anx78xx, &sp.edid_break);
+}
+
+static u8 sp_tx_get_edid_block(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 c;
+
+	sp_tx_aux_wr(anx78xx, 0x7e);
+	sp_tx_aux_rd(anx78xx, 0x01);
+	sp_read_reg(anx78xx, TX_P0, BUF_DATA_0, &c);
+	dev_dbg(dev, "EDID Block = %d\n", (int)(c + 1));
+
+	if (c > 3)
+		c = 1;
+	return c;
+}
+
+static void sp_edid_read(struct anx78xx *anx78xx, u8 offset,
+			u8 *pblock_buf)
+{
+	u8 data_cnt, cnt;
+	u8 c;
+
+	sp_tx_aux_wr(anx78xx, offset);
+	sp_tx_aux_rd(anx78xx, 0xf5);
+	data_cnt = 0;
+	cnt = 0;
+
+	while ((data_cnt) < 16)	{
+		sp_read_reg(anx78xx, TX_P0, BUF_DATA_COUNT, &c);
+
+		if ((c & 0x1f) != 0) {
+			data_cnt = data_cnt + c;
+			do {
+				sp_read_reg(anx78xx, TX_P0, BUF_DATA_0 + c - 1,
+					&(pblock_buf[c - 1]));
+				if (c == 1)
+					break;
+			} while (c--);
+		} else {
+			if (cnt++ <= 2) {
+				sp_tx_rst_aux(anx78xx);
+				c = 0x05 | ((0x0f - data_cnt) << 4);
+				sp_tx_aux_rd(anx78xx, c);
+			} else {
+				 sp.edid_break = 1;
+				 break;
+			}
+		}
+	}
+	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x01);
+	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, ADDR_ONLY_BIT | AUX_OP_EN);
+	sp_wait_aux_op_finish(anx78xx, &sp.edid_break);
+	sp_tx_addronly_set(anx78xx, 0);
+}
+
+static void sp_tx_edid_read_initial(struct anx78xx *anx78xx)
+{
+	sp_write_reg(anx78xx, TX_P0, AUX_ADDR_7_0, 0x50);
+	sp_write_reg(anx78xx, TX_P0, AUX_ADDR_15_8, 0);
+	sp_write_reg_and(anx78xx, TX_P0, AUX_ADDR_19_16, 0xf0);
+}
+
+static void sp_seg_edid_read(struct anx78xx *anx78xx,
+			u8 segment, u8 offset)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 c, cnt;
+	int i;
+
+	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x04);
+
+	sp_write_reg(anx78xx, TX_P0, AUX_ADDR_7_0, 0x30);
+
+	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, ADDR_ONLY_BIT | AUX_OP_EN);
+
+	sp_read_reg(anx78xx, TX_P0, AUX_CTRL2, &c);
+
+	sp_wait_aux_op_finish(anx78xx, &sp.edid_break);
+	sp_read_reg(anx78xx, TX_P0, AUX_CTRL, &c);
+
+	sp_write_reg(anx78xx, TX_P0, BUF_DATA_0, segment);
+
+	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x04);
+
+	sp_write_reg_and_or(anx78xx, TX_P0, AUX_CTRL2, ~ADDR_ONLY_BIT,
+			AUX_OP_EN);
+	cnt = 0;
+	sp_read_reg(anx78xx, TX_P0, AUX_CTRL2, &c);
+	while (c & AUX_OP_EN) {
+		usleep_range(1000, 2000);
+		cnt++;
+		if (cnt == 10) {
+			dev_dbg(dev, "write break");
+			sp_tx_rst_aux(anx78xx);
+			cnt = 0;
+			sp.edid_break = 1;
+			return;
+		}
+		sp_read_reg(anx78xx, TX_P0, AUX_CTRL2, &c);
+
+	}
+
+	sp_write_reg(anx78xx, TX_P0, AUX_ADDR_7_0, 0x50);
+
+	sp_tx_aux_wr(anx78xx, offset);
+
+	sp_tx_aux_rd(anx78xx, 0xf5);
+	cnt = 0;
+	for (i = 0; i < 16; i++) {
+		sp_read_reg(anx78xx, TX_P0, BUF_DATA_COUNT, &c);
+		while ((c & 0x1f) == 0) {
+			usleep_range(2000, 4000);
+			cnt++;
+			sp_read_reg(anx78xx, TX_P0, BUF_DATA_COUNT, &c);
+			if (cnt == 10) {
+				dev_dbg(dev, "read break");
+				sp_tx_rst_aux(anx78xx);
+				sp.edid_break = 1;
+				return;
+			}
+		}
+
+
+		sp_read_reg(anx78xx, TX_P0, BUF_DATA_0+i, &c);
+	}
+
+	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x01);
+	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, ADDR_ONLY_BIT | AUX_OP_EN);
+	sp_write_reg_and(anx78xx, TX_P0, AUX_CTRL2, ~ADDR_ONLY_BIT);
+	sp_read_reg(anx78xx, TX_P0, AUX_CTRL2, &c);
+	while (c & AUX_OP_EN)
+		sp_read_reg(anx78xx, TX_P0, AUX_CTRL2, &c);
+}
+
+static bool sp_edid_checksum_result(u8 *pbuf)
+{
+	u8 cnt, checksum;
+
+	checksum = 0;
+
+	for (cnt = 0; cnt < 0x80; cnt++)
+		checksum = checksum + pbuf[cnt];
+
+	sp.edid_checksum = checksum - pbuf[0x7f];
+	sp.edid_checksum = ~sp.edid_checksum + 1;
+
+	return checksum == 0 ? 1 : 0;
+}
+
+static void sp_edid_header_result(struct anx78xx *anx78xx, u8 *pbuf)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	if ((pbuf[0] == 0) && (pbuf[7] == 0) && (pbuf[1] == 0xff)
+		&& (pbuf[2] == 0xff) && (pbuf[3] == 0xff)
+		&& (pbuf[4] == 0xff) && (pbuf[5] == 0xff) && (pbuf[6] == 0xff))
+		dev_dbg(dev, "Good EDID header!\n");
+	else
+		dev_err(dev, "Bad EDID header!\n");
+}
+
+static void sp_check_edid_data(struct anx78xx *anx78xx, u8 *pblock_buf)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 i;
+
+	sp_edid_header_result(anx78xx, pblock_buf);
+	for (i = 0; i <= ((pblock_buf[0x7e] > 1) ? 1 : pblock_buf[0x7e]); i++) {
+		if (!sp_edid_checksum_result(pblock_buf + i * 128))
+			dev_err(dev, "Block %x edid checksum error\n", (u16)i);
+		else
+			dev_dbg(dev, "Block %x edid checksum OK\n", (u16)i);
+	}
+}
+
+static bool sp_tx_edid_read(struct anx78xx *anx78xx, u8 *pedid_blocks_buf)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 offset = 0;
+	u8 count, blocks_num;
+	u8 pblock_buf[16];
+	u8 i, j, c;
+
+	sp.edid_break = 0;
+	sp_tx_edid_read_initial(anx78xx);
+	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x04);
+	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, 0x03);
+	sp_wait_aux_op_finish(anx78xx, &sp.edid_break);
+	sp_tx_addronly_set(anx78xx, 0);
+
+	blocks_num = sp_tx_get_edid_block(anx78xx);
+
+	count = 0;
+	do {
+		switch (count) {
+		case 0:
+		case 1:
+			for (i = 0; i < 8; i++) {
+				offset = (i + count * 8) * 16;
+				sp_edid_read(anx78xx, offset, pblock_buf);
+				if (sp.edid_break == 1)
+					break;
+				for (j = 0; j < 16; j++) {
+					pedid_blocks_buf[offset + j]
+						= pblock_buf[j];
+				}
+			}
+			break;
+		case 2:
+			offset = 0x00;
+			for (j = 0; j < 8; j++) {
+				if (sp.edid_break == 1)
+					break;
+				sp_seg_edid_read(anx78xx, count / 2, offset);
+				offset = offset + 0x10;
+			}
+			break;
+		case 3:
+			offset = 0x80;
+			for (j = 0; j < 8; j++) {
+				if (sp.edid_break == 1)
+					break;
+				sp_seg_edid_read(anx78xx, count / 2, offset);
+				offset = offset + 0x10;
+			}
+			break;
+		default:
+			break;
+		}
+		count++;
+		if (sp.edid_break == 1)
+			break;
+	} while (blocks_num >= count);
+
+	sp_tx_rst_aux(anx78xx);
+	if (sp.read_edid_flag == 0) {
+		sp_check_edid_data(anx78xx, pedid_blocks_buf);
+		sp.read_edid_flag = 1;
+	}
+	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x18, 1, &c);
+	if (c & 0x04) {
+		dev_dbg(dev, "check sum = %.2x\n", (u16)sp.edid_checksum);
+		c = sp.edid_checksum;
+		sp_tx_aux_dpcdwrite_bytes(anx78xx, 0x00, 0x02, 0x61, 1, &c);
+		sp.tx_test_edid = 1;
+		c = 0x04;
+		sp_tx_aux_dpcdwrite_bytes(anx78xx, 0x00, 0x02, 0x60, 1, &c);
+		dev_dbg(dev, "Test EDID done\n");
+
+	}
+
+	return 0;
+}
+
+static bool sp_check_with_pre_edid(struct anx78xx *anx78xx, u8 *org_buf)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 i;
+	u8 temp_buf[16];
+	bool return_flag;
+
+	return_flag = 0;
+	sp.edid_break = 0;
+	sp_tx_edid_read_initial(anx78xx);
+	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x04);
+	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, 0x03);
+	sp_wait_aux_op_finish(anx78xx, &sp.edid_break);
+	sp_tx_addronly_set(anx78xx, 0);
+
+	sp_edid_read(anx78xx, 0x70, temp_buf);
+
+	if (sp.edid_break == 0) {
+
+		for (i = 0; i < 16; i++) {
+			if (org_buf[0x70 + i] != temp_buf[i]) {
+				dev_dbg(dev, "%s\n",
+					"different checksum and blocks num\n");
+				return_flag = 1;
+				break;
+			}
+		}
+	} else
+		return_flag = 1;
+
+	if (return_flag)
+		goto return_point;
+
+	sp_edid_read(anx78xx, 0x08, temp_buf);
+	if (sp.edid_break == 0) {
+		for (i = 0; i < 16; i++) {
+			if (org_buf[i + 8] != temp_buf[i]) {
+				dev_dbg(dev, "different edid information\n");
+				return_flag = 1;
+				break;
+			}
+		}
+	} else
+		return_flag = 1;
+
+return_point:
+	sp_tx_rst_aux(anx78xx);
+
+	return return_flag;
+}
+
+static void sp_edid_process(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 temp_value, temp_value1;
+	u8 i;
+
+	dev_dbg(dev, "edid_process\n");
+
+	if (sp.read_edid_flag == 1) {
+		if (sp_check_with_pre_edid(anx78xx, sp.edid_blocks))
+			sp.read_edid_flag = 0;
+		else
+			dev_dbg(dev, "Don`t need to read edid!\n");
+	}
+
+	if (sp.read_edid_flag == 0) {
+		sp_tx_edid_read(anx78xx, sp.edid_blocks);
+		if (sp.edid_break)
+			dev_err(dev, "ERR:EDID corruption!\n");
+	}
+
+	/* Release the HPD after the OTP loaddown */
+	i = 10;
+	do {
+		if ((sp_i2c_read_byte(anx78xx, TX_P0, HDCP_KEY_STATUS) & 0x01))
+			break;
+
+		dev_dbg(dev, "waiting HDCP KEY loaddown\n");
+		usleep_range(1000, 2000);
+	} while (--i);
+
+	sp_write_reg(anx78xx, RX_P0, HDMI_RX_INT_MASK1_REG, 0xe2);
+	hdmi_rx_set_hpd(anx78xx, 1);
+	dev_dbg(dev, "hdmi_rx_set_hpd 1 !\n");
+
+	hdmi_rx_set_termination(anx78xx, 1);
+
+	sp_tx_get_rx_bw(anx78xx, &temp_value);
+	dev_dbg(dev, "RX BW %x\n", (u16)temp_value);
+
+	temp_value1 = sp_parse_edid_to_get_bandwidth(anx78xx);
+	if (temp_value <= temp_value1)
+		temp_value1 = temp_value;
+
+	dev_dbg(dev, "set link bw in edid %x\n", (u16)temp_value1);
+	sp.changed_bandwidth = temp_value1;
+	goto_next_system_state(anx78xx);
+}
+/******************End EDID process********************/
+
+/******************start Link training process********************/
+static void sp_tx_lvttl_bit_mapping(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 c, colorspace;
+	u8 vid_bit;
+
+	vid_bit = 0;
+	sp_read_reg(anx78xx, RX_P1, HDMI_RX_AVI_DATA00_REG, &colorspace);
+	colorspace &= 0x60;
+
+	switch (((sp_i2c_read_byte(anx78xx, RX_P0, HDMI_RX_VIDEO_STATUS_REG1)
+		& COLOR_DEPTH) >> 4)) {
+	default:
+	case HDMI_LEGACY:
+		c = IN_BPC_8BIT;
+		vid_bit = 0;
+		break;
+	case HDMI_24BIT:
+		c = IN_BPC_8BIT;
+		if (colorspace == 0x20)
+			vid_bit = 5;
+		else
+			vid_bit = 1;
+		break;
+	case HDMI_30BIT:
+		c = IN_BPC_10BIT;
+		if (colorspace == 0x20)
+			vid_bit = 6;
+		else
+			vid_bit = 2;
+		break;
+	case HDMI_36BIT:
+		c = IN_BPC_12BIT;
+		if (colorspace == 0x20)
+			vid_bit = 6;
+		else
+			vid_bit = 3;
+		break;
+
+	}
+	/*
+	 * For down sample video (12bit, 10bit ---> 8bit),
+	 * this register don`t change
+	 */
+	if (sp.down_sample_en == 0)
+		sp_write_reg_and_or(anx78xx, TX_P2,
+			SP_TX_VID_CTRL2_REG, 0x8c, colorspace >> 5 | c);
+
+	/* Patch: for 10bit video must be set this value to 12bit by someone */
+	if (sp.down_sample_en == 1 && c == IN_BPC_10BIT)
+		vid_bit = 3;
+
+	sp_write_reg_and_or(anx78xx, TX_P2,
+		BIT_CTRL_SPECIFIC, 0x00, ENABLE_BIT_CTRL | vid_bit << 1);
+
+	if (sp.tx_test_edid) {
+		sp_write_reg_and(anx78xx, TX_P2, SP_TX_VID_CTRL2_REG, 0x8f);
+		dev_dbg(dev, "***color space is set to 18bit***\n");
+	}
+
+	if (colorspace) {
+		sp_write_reg(anx78xx, TX_P0, SP_TX_VID_BLANK_SET1, 0x80);
+		sp_write_reg(anx78xx, TX_P0, SP_TX_VID_BLANK_SET2, 0x00);
+		sp_write_reg(anx78xx, TX_P0, SP_TX_VID_BLANK_SET3, 0x80);
+	} else {
+		sp_write_reg(anx78xx, TX_P0, SP_TX_VID_BLANK_SET1, 0x0);
+		sp_write_reg(anx78xx, TX_P0, SP_TX_VID_BLANK_SET2, 0x0);
+		sp_write_reg(anx78xx, TX_P0, SP_TX_VID_BLANK_SET3, 0x0);
+	}
+}
+
+static ulong sp_tx_pclk_calc(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	ulong str_plck;
+	u16 vid_counter;
+	u8 c;
+
+	sp_read_reg(anx78xx, RX_P0, 0x8d, &c);
+	vid_counter = c;
+	vid_counter = vid_counter << 8;
+	sp_read_reg(anx78xx, RX_P0, 0x8c, &c);
+	vid_counter |= c;
+	str_plck = ((ulong)vid_counter * XTAL_CLK_M10)  >> 12;
+	dev_dbg(dev, "PCLK = %d.%d\n", (((u16)(str_plck))/10),
+		((u16)str_plck - (((u16)str_plck/10)*10)));
+	return str_plck;
+}
+
+static u8 sp_tx_bw_lc_sel(struct anx78xx *anx78xx, ulong pclk)
+{
+	struct device *dev = &anx78xx->client->dev;
+	ulong pixel_clk;
+	u8 c1;
+
+	switch (((sp_i2c_read_byte(anx78xx, RX_P0, HDMI_RX_VIDEO_STATUS_REG1)
+		& COLOR_DEPTH) >> 4)) {
+	case HDMI_LEGACY:
+	case HDMI_24BIT:
+	default:
+		pixel_clk = pclk;
+		break;
+	case HDMI_30BIT:
+		pixel_clk = (pclk * 5) >> 2;
+		break;
+	case HDMI_36BIT:
+		pixel_clk = (pclk * 3) >> 1;
+		break;
+	}
+	dev_dbg(dev, "pixel_clk = %d.%d\n", (((u16)(pixel_clk))/10),
+		((u16)pixel_clk - (((u16)pixel_clk/10)*10)));
+
+	sp.down_sample_en = 0;
+	if (pixel_clk <= 530)
+		c1 = LINK_1P62G;
+	else if ((530 < pixel_clk) && (pixel_clk <= 890))
+		c1 = LINK_2P7G;
+	else if ((890 < pixel_clk) && (pixel_clk <= 1800))
+		c1 = LINK_5P4G;
+	else {
+		 c1 = LINK_6P75G;
+		 if (pixel_clk > 2240)
+			sp.down_sample_en = 1;
+	}
+
+	if (sp_tx_get_link_bw(anx78xx) != c1) {
+		sp.changed_bandwidth = c1;
+		dev_dbg(dev, "%s! %.2x\n",
+		    "different bandwidth between sink support and cur video",
+		    (u16)c1);
+		return 1;
+	}
+	return 0;
+}
+
+static void sp_tx_spread_enable(struct anx78xx *anx78xx, u8 benable)
+{
+	u8 c;
+
+	sp_read_reg(anx78xx, TX_P0, SP_TX_DOWN_SPREADING_CTRL1, &c);
+
+	if (benable) {
+		c |= SP_TX_SSC_DWSPREAD;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_DOWN_SPREADING_CTRL1, c);
+
+		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x01,
+			DPCD_DOWNSPREAD_CTRL, 1, &c);
+		c |= SPREAD_AMPLITUDE;
+		sp_tx_aux_dpcdwrite_byte(anx78xx, 0x00, 0x01,
+					DPCD_DOWNSPREAD_CTRL, c);
+	} else {
+		c &= ~SP_TX_SSC_DISABLE;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_DOWN_SPREADING_CTRL1, c);
+
+		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x01,
+			DPCD_DOWNSPREAD_CTRL, 1, &c);
+		c &= ~SPREAD_AMPLITUDE;
+		sp_tx_aux_dpcdwrite_byte(anx78xx, 0x00, 0x01,
+			DPCD_DOWNSPREAD_CTRL, c);
+	}
+}
+
+static void sp_tx_config_ssc(struct anx78xx *anx78xx,
+			enum sp_ssc_dep sscdep)
+{
+	sp_write_reg(anx78xx, TX_P0, SP_TX_DOWN_SPREADING_CTRL1, 0x0);
+	sp_write_reg(anx78xx, TX_P0, SP_TX_DOWN_SPREADING_CTRL1, sscdep);
+	sp_tx_spread_enable(anx78xx, 1);
+}
+
+static void sp_tx_enhancemode_set(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 c;
+
+	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00, DPCD_MAX_LANE_COUNT,
+				1, &c);
+	if (c & ENHANCED_FRAME_CAP) {
+		sp_write_reg_or(anx78xx, TX_P0, SP_TX_SYS_CTRL4_REG,
+				ENHANCED_MODE);
+
+		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x01,
+			DPCD_LANE_COUNT_SET, 1, &c);
+		c |= ENHANCED_FRAME_EN;
+		sp_tx_aux_dpcdwrite_byte(anx78xx, 0x00, 0x01,
+			DPCD_LANE_COUNT_SET, c);
+
+		dev_dbg(dev, "Enhance mode enabled\n");
+	} else {
+		sp_write_reg_and(anx78xx, TX_P0, SP_TX_SYS_CTRL4_REG,
+				~ENHANCED_MODE);
+
+		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x01,
+			DPCD_LANE_COUNT_SET, 1, &c);
+
+		c &= ~ENHANCED_FRAME_EN;
+		sp_tx_aux_dpcdwrite_byte(anx78xx, 0x00, 0x01,
+			DPCD_LANE_COUNT_SET, c);
+
+		dev_dbg(dev, "Enhance mode disabled\n");
+	}
+}
+
+static u16 sp_tx_link_err_check(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u16 errl = 0, errh = 0;
+	u8 bytebuf[2];
+
+	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x10, 2, bytebuf);
+	usleep_range(5000, 10000);
+	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x10, 2, bytebuf);
+	errh = bytebuf[1];
+
+	if (errh & 0x80) {
+		errl = bytebuf[0];
+		errh = (errh & 0x7f) << 8;
+		errl = errh + errl;
+	}
+
+	dev_err(dev, " Err of Lane = %d\n", errl);
+	return errl;
+}
+
+static void sp_lt_finish(struct anx78xx *anx78xx, u8 temp_value)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x02, 1, &temp_value);
+	if ((temp_value & 0x07) == 0x07) {
+		/*
+		 * if there is link error,
+		 * adjust pre-emphsis to check error again.
+		 * If there is no error,keep the setting,
+		 * otherwise use 400mv0db
+		 */
+		if (!sp.tx_test_lt) {
+			if (sp_tx_link_err_check(anx78xx)) {
+				sp_read_reg(anx78xx, TX_P0,
+					SP_TX_LT_SET_REG, &temp_value);
+				if (!(temp_value & MAX_PRE_REACH)) {
+					sp_write_reg(anx78xx, TX_P0,
+						SP_TX_LT_SET_REG,
+						(temp_value + 0x08));
+					if (sp_tx_link_err_check(anx78xx))
+						sp_write_reg(anx78xx, TX_P0,
+						SP_TX_LT_SET_REG,
+						temp_value);
+				}
+			}
+
+			sp_read_reg(anx78xx, TX_P0,
+				SP_TX_LINK_BW_SET_REG, &temp_value);
+			if (temp_value == sp.changed_bandwidth) {
+				dev_dbg(dev, "LT succeed, bw: %.2x",
+					(u16) temp_value);
+				dev_dbg(dev, "Lane0 Set: %.2x\n",
+					(u16) sp_i2c_read_byte(anx78xx, TX_P0,
+						SP_TX_LT_SET_REG));
+				sp.tx_lt_state = LT_INIT;
+				goto_next_system_state(anx78xx);
+			} else {
+				dev_dbg(dev, "cur:%.2x, per:%.2x\n",
+					(u16)temp_value,
+					(u16)sp.changed_bandwidth);
+				sp.tx_lt_state = LT_ERROR;
+			}
+		} else {
+			sp.tx_test_lt = 0;
+			sp.tx_lt_state = LT_INIT;
+			goto_next_system_state(anx78xx);
+		}
+	} else {
+		dev_dbg(dev, "LANE0 Status error: %.2x\n",
+			(u16)(temp_value & 0x07));
+		sp.tx_lt_state = LT_ERROR;
+	}
+}
+
+static void sp_link_training(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 temp_value, return_value, c;
+
+	return_value = 1;
+	dev_dbg(dev, "sp.tx_lt_state : %x\n",
+			(int)sp.tx_lt_state);
+	switch (sp.tx_lt_state) {
+	case LT_INIT:
+		sp_block_power_ctrl(anx78xx, SP_TX_PWR_VIDEO,
+					SP_POWER_ON);
+		sp_tx_video_mute(anx78xx, 1);
+		sp_tx_enable_video_input(anx78xx, 0);
+		sp.tx_lt_state++;
+	/* fallthrough */
+	case LT_WAIT_PLL_LOCK:
+		if (!sp_tx_get_pll_lock_status(anx78xx)) {
+			sp_read_reg(anx78xx, TX_P0, SP_TX_PLL_CTRL_REG,
+				&temp_value);
+
+			temp_value |= PLL_RST;
+			sp_write_reg(anx78xx, TX_P0, SP_TX_PLL_CTRL_REG,
+				temp_value);
+
+			temp_value &= ~PLL_RST;
+			sp_write_reg(anx78xx, TX_P0, SP_TX_PLL_CTRL_REG,
+				temp_value);
+
+			dev_dbg(dev, "PLL not lock!\n");
+		} else
+			sp.tx_lt_state = LT_CHECK_LINK_BW;
+		SP_BREAK(LT_WAIT_PLL_LOCK, sp.tx_lt_state);
+	/* fallthrough */
+	case LT_CHECK_LINK_BW:
+		sp_tx_get_rx_bw(anx78xx, &temp_value);
+		if (temp_value < sp.changed_bandwidth) {
+			dev_dbg(dev, "****Over bandwidth****\n");
+			sp.changed_bandwidth = temp_value;
+		} else
+			sp.tx_lt_state++;
+	/* fallthrough */
+	case LT_START:
+		if (sp.tx_test_lt) {
+			sp.changed_bandwidth = sp.tx_test_bw;
+			sp_write_reg_and(anx78xx, TX_P2, SP_TX_VID_CTRL2_REG,
+					0x8f);
+		} else
+			sp_write_reg(anx78xx, TX_P0, SP_TX_LT_SET_REG, 0x00);
+
+		sp_write_reg_and(anx78xx, TX_P0, SP_TX_ANALOG_PD_REG, ~CH0_PD);
+
+		sp_tx_config_ssc(anx78xx, SSC_DEP_4000PPM);
+		sp_tx_set_link_bw(anx78xx, sp.changed_bandwidth);
+		sp_tx_enhancemode_set(anx78xx);
+
+		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00, 0x00, 0x01, &c);
+		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x06, 0x00, 0x01,
+					&temp_value);
+		if (c >= 0x12)
+			temp_value &= 0xf8;
+		else
+			temp_value &= 0xfc;
+		temp_value |= 0x01;
+		sp_tx_aux_dpcdwrite_byte(anx78xx, 0x00, 0x06, 0x00, temp_value);
+
+
+		sp_write_reg(anx78xx, TX_P0, LT_CTRL, SP_TX_LT_EN);
+		sp.tx_lt_state = LT_WAITTING_FINISH;
+	/* fallthrough */
+	case LT_WAITTING_FINISH:
+		/* here : waiting interrupt to change training state. */
+		break;
+
+	case LT_ERROR:
+		sp_write_reg_or(anx78xx, TX_P2, RST_CTRL2, SERDES_FIFO_RST);
+		msleep(20);
+		sp_write_reg_and(anx78xx, TX_P2, RST_CTRL2, (~SERDES_FIFO_RST));
+		dev_err(dev, "LT ERROR Status: SERDES FIFO reset.");
+		redo_cur_system_state(anx78xx);
+		sp.tx_lt_state = LT_INIT;
+		break;
+
+	case LT_FINISH:
+		sp_lt_finish(anx78xx, temp_value);
+		break;
+	default:
+		break;
+	}
+
+}
+/******************End Link training process********************/
+
+/******************Start Output video process********************/
+static void sp_tx_set_colorspace(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 color_space;
+
+	if (sp.down_sample_en) {
+		sp_read_reg(anx78xx, RX_P1, HDMI_RX_AVI_DATA00_REG,
+			&color_space);
+		color_space &= 0x60;
+		if (color_space == 0x20) {
+			dev_dbg(dev, "YCbCr4:2:2 ---> PASS THROUGH.\n");
+			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL6_REG, 0x00);
+			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL5_REG, 0x00);
+			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL2_REG, 0x11);
+		} else if (color_space == 0x40) {
+			dev_dbg(dev, "YCbCr4:4:4 ---> YCbCr4:2:2\n");
+			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL6_REG, 0x41);
+			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL5_REG, 0x00);
+			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL2_REG, 0x12);
+		} else if (color_space == 0x00) {
+			dev_dbg(dev, "RGB4:4:4 ---> YCbCr4:2:2\n");
+			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL6_REG, 0x41);
+			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL5_REG, 0x83);
+			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL2_REG, 0x10);
+		}
+	} else {
+		sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL6_REG, 0x00);
+		sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL5_REG, 0x00);
+	}
+}
+
+static void sp_tx_avi_setup(struct anx78xx *anx78xx)
+{
+	u8 c;
+	int i;
+
+	for (i = 0; i < 13; i++) {
+		sp_read_reg(anx78xx, RX_P1, (HDMI_RX_AVI_DATA00_REG + i), &c);
+		sp.tx_packet_avi.avi_data[i] = c;
+	}
+}
+
+static void sp_tx_load_packet(struct anx78xx *anx78xx,
+			enum packets_type type)
+{
+	int i;
+	u8 c;
+
+	switch (type) {
+	case AVI_PACKETS:
+		sp_write_reg(anx78xx, TX_P2, SP_TX_AVI_TYPE, 0x82);
+		sp_write_reg(anx78xx, TX_P2, SP_TX_AVI_VER, 0x02);
+		sp_write_reg(anx78xx, TX_P2, SP_TX_AVI_LEN, 0x0d);
+
+		for (i = 0; i < 13; i++) {
+			sp_write_reg(anx78xx, TX_P2, SP_TX_AVI_DB0 + i,
+					sp.tx_packet_avi.avi_data[i]);
+		}
+
+		break;
+
+	case SPD_PACKETS:
+		sp_write_reg(anx78xx, TX_P2, SP_TX_SPD_TYPE, 0x83);
+		sp_write_reg(anx78xx, TX_P2, SP_TX_SPD_VER, 0x01);
+		sp_write_reg(anx78xx, TX_P2, SP_TX_SPD_LEN, 0x19);
+
+		for (i = 0; i < 25; i++) {
+			sp_write_reg(anx78xx, TX_P2, SP_TX_SPD_DB0 + i,
+					sp.tx_packet_spd.spd_data[i]);
+		}
+
+		break;
+
+	case VSI_PACKETS:
+		sp_write_reg(anx78xx, TX_P2, SP_TX_MPEG_TYPE, 0x81);
+		sp_write_reg(anx78xx, TX_P2, SP_TX_MPEG_VER, 0x01);
+		sp_read_reg(anx78xx, RX_P1, HDMI_RX_MPEG_LEN_REG, &c);
+		sp_write_reg(anx78xx, TX_P2, SP_TX_MPEG_LEN, c);
+
+		for (i = 0; i < 10; i++) {
+			sp_write_reg(anx78xx, TX_P2, SP_TX_MPEG_DB0 + i,
+					sp.tx_packet_mpeg.mpeg_data[i]);
+		}
+
+		break;
+	case MPEG_PACKETS:
+		sp_write_reg(anx78xx, TX_P2, SP_TX_MPEG_TYPE, 0x85);
+		sp_write_reg(anx78xx, TX_P2, SP_TX_MPEG_VER, 0x01);
+		sp_write_reg(anx78xx, TX_P2, SP_TX_MPEG_LEN, 0x0d);
+
+		for (i = 0; i < 10; i++) {
+			sp_write_reg(anx78xx, TX_P2, SP_TX_MPEG_DB0 + i,
+					sp.tx_packet_mpeg.mpeg_data[i]);
+		}
+
+		break;
+	case AUDIF_PACKETS:
+		sp_write_reg(anx78xx, TX_P2, SP_TX_AUD_TYPE, 0x84);
+		sp_write_reg(anx78xx, TX_P2, SP_TX_AUD_VER, 0x01);
+		sp_write_reg(anx78xx, TX_P2, SP_TX_AUD_LEN, 0x0a);
+		for (i = 0; i < 10; i++) {
+			sp_write_reg(anx78xx, TX_P2, SP_TX_AUD_DB0 + i,
+					sp.tx_audioinfoframe.pb_byte[i]);
+		}
+
+		break;
+
+	default:
+		break;
+	}
+}
+
+static void sp_tx_config_packets(struct anx78xx *anx78xx,
+				enum packets_type type)
+{
+	u8 c;
+
+	switch (type) {
+	case AVI_PACKETS:
+
+		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
+		c &= ~AVI_IF_EN;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
+		sp_tx_load_packet(anx78xx, AVI_PACKETS);
+
+		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
+		c |= AVI_IF_UD;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
+
+		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
+		c |= AVI_IF_EN;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
+
+		break;
+
+	case SPD_PACKETS:
+		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
+		c &= ~SPD_IF_EN;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
+		sp_tx_load_packet(anx78xx, SPD_PACKETS);
+
+		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
+		c |= SPD_IF_UD;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
+
+		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
+		c |=  SPD_IF_EN;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
+
+		break;
+
+	case VSI_PACKETS:
+		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
+		c &= ~MPEG_IF_EN;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
+
+		sp_tx_load_packet(anx78xx, VSI_PACKETS);
+
+		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
+		c |= MPEG_IF_UD;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
+
+		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
+		c |= MPEG_IF_EN;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
+
+		break;
+	case MPEG_PACKETS:
+		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
+		c &= ~MPEG_IF_EN;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
+
+
+		sp_tx_load_packet(anx78xx, MPEG_PACKETS);
+
+		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
+		c |= MPEG_IF_UD;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
+
+		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
+		c |= MPEG_IF_EN;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
+
+		break;
+	case AUDIF_PACKETS:
+		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
+		c &= ~AUD_IF_EN;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
+
+
+		sp_tx_load_packet(anx78xx, AUDIF_PACKETS);
+
+		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
+		c |= AUD_IF_UP;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
+
+		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
+		c |= AUD_IF_EN;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
+
+		break;
+
+	default:
+		break;
+	}
+
+}
+
+static void sp_config_video_output(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 temp_value;
+
+	switch (sp.tx_vo_state) {
+	default:
+	case VO_WAIT_VIDEO_STABLE:
+		sp_read_reg(anx78xx, RX_P0, HDMI_RX_SYS_STATUS_REG,
+			&temp_value);
+		if ((temp_value & (TMDS_DE_DET | TMDS_CLOCK_DET)) == 0x03) {
+			sp_tx_bw_lc_sel(anx78xx, sp_tx_pclk_calc(anx78xx));
+			sp_tx_enable_video_input(anx78xx, 0);
+			sp_tx_avi_setup(anx78xx);
+			sp_tx_config_packets(anx78xx, AVI_PACKETS);
+			sp_tx_set_colorspace(anx78xx);
+			sp_tx_lvttl_bit_mapping(anx78xx);
+			if (sp_i2c_read_byte(anx78xx, RX_P0, RX_PACKET_REV_STA)
+			& VSI_RCVD)
+				sp_hdmi_rx_new_vsi_int(anx78xx);
+			sp_tx_enable_video_input(anx78xx, 1);
+			sp.tx_vo_state = VO_WAIT_TX_VIDEO_STABLE;
+		} else
+			dev_dbg(dev, "HDMI input video not stable!\n");
+		SP_BREAK(VO_WAIT_VIDEO_STABLE, sp.tx_vo_state);
+	/* fallthrough */
+	case VO_WAIT_TX_VIDEO_STABLE:
+		sp_read_reg(anx78xx, TX_P0, SP_TX_SYS_CTRL2_REG, &temp_value);
+		sp_write_reg(anx78xx, TX_P0, SP_TX_SYS_CTRL2_REG, temp_value);
+		sp_read_reg(anx78xx, TX_P0, SP_TX_SYS_CTRL2_REG, &temp_value);
+		if (temp_value & CHA_STA)
+			dev_dbg(dev, "Stream clock not stable!\n");
+		else {
+			sp_read_reg(anx78xx, TX_P0, SP_TX_SYS_CTRL3_REG,
+				&temp_value);
+			sp_write_reg(anx78xx, TX_P0, SP_TX_SYS_CTRL3_REG,
+				temp_value);
+			sp_read_reg(anx78xx, TX_P0, SP_TX_SYS_CTRL3_REG,
+				&temp_value);
+			if (!(temp_value & STRM_VALID))
+				dev_err(dev, "video stream not valid!\n");
+			else
+				sp.tx_vo_state = VO_CHECK_VIDEO_INFO;
+		}
+		SP_BREAK(VO_WAIT_TX_VIDEO_STABLE, sp.tx_vo_state);
+	/* fallthrough */
+	case VO_CHECK_VIDEO_INFO:
+		if (!sp_tx_bw_lc_sel(anx78xx, sp_tx_pclk_calc(anx78xx)))
+			sp.tx_vo_state++;
+		else
+			sp_tx_set_sys_state(anx78xx, STATE_LINK_TRAINING);
+		SP_BREAK(VO_CHECK_VIDEO_INFO, sp.tx_vo_state);
+	/* fallthrough */
+	case VO_FINISH:
+		sp_block_power_ctrl(anx78xx, SP_TX_PWR_AUDIO,
+				SP_POWER_DOWN);
+		hdmi_rx_mute_video(anx78xx, 0);
+		sp_tx_video_mute(anx78xx, 0);
+		sp_tx_show_information(anx78xx);
+		goto_next_system_state(anx78xx);
+		break;
+	}
+}
+/******************End Output video process********************/
+
+/******************Start HDCP process********************/
+static inline void sp_tx_hdcp_encryption_disable(struct anx78xx *anx78xx)
+{
+	sp_write_reg_and(anx78xx, TX_P0, TX_HDCP_CTRL0, ~ENC_EN);
+}
+
+static inline void sp_tx_hdcp_encryption_enable(struct anx78xx *anx78xx)
+{
+	sp_write_reg_or(anx78xx, TX_P0, TX_HDCP_CTRL0, ENC_EN);
+}
+
+static void sp_tx_hw_hdcp_enable(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 c;
+
+	sp_write_reg_and(anx78xx, TX_P0, TX_HDCP_CTRL0,
+			~ENC_EN & ~HARD_AUTH_EN);
+	sp_write_reg_or(anx78xx, TX_P0, TX_HDCP_CTRL0,
+			HARD_AUTH_EN | BKSV_SRM_PASS | KSVLIST_VLD | ENC_EN);
+
+	sp_read_reg(anx78xx, TX_P0, TX_HDCP_CTRL0, &c);
+	dev_dbg(dev, "TX_HDCP_CTRL0 = %.2x\n", (u16)c);
+	sp_write_reg(anx78xx, TX_P0, SP_TX_WAIT_R0_TIME, 0xb0);
+	sp_write_reg(anx78xx, TX_P0, SP_TX_WAIT_KSVR_TIME, 0xc8);
+
+	dev_dbg(dev, "Hardware HDCP is enabled.\n");
+}
+
+static void sp_hdcp_process(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	switch (sp.hcdp_state) {
+	case HDCP_CAPABLE_CHECK:
+		sp.ds_vid_stb_cntr = 0;
+		sp.hdcp_fail_count = 0;
+		if (is_anx_dongle(anx78xx))
+			sp.hcdp_state = HDCP_WAITTING_VID_STB;
+		else
+			sp.hcdp_state = HDCP_HW_ENABLE;
+		if (sp.block_en == 0) {
+			if (sp_hdcp_cap_check(anx78xx) == 0)
+				sp.hcdp_state = HDCP_NOT_SUPPORT;
+		}
+		/*
+		 * Just for debug, pin: P2-2
+		 * There is a switch to disable/enable HDCP.
+		 */
+		sp.hcdp_state = HDCP_NOT_SUPPORT;
+		/*****************************************/
+		SP_BREAK(HDCP_CAPABLE_CHECK, sp.hcdp_state);
+	/* fallthrough */
+	case HDCP_WAITTING_VID_STB:
+		msleep(100);
+		sp.hcdp_state = HDCP_HW_ENABLE;
+		SP_BREAK(HDCP_WAITTING_VID_STB, sp.hcdp_state);
+	/* fallthrough */
+	case HDCP_HW_ENABLE:
+		sp_tx_video_mute(anx78xx, 1);
+		sp_tx_clean_hdcp_status(anx78xx);
+		sp_block_power_ctrl(anx78xx, SP_TX_PWR_HDCP,
+				SP_POWER_DOWN);
+		msleep(20);
+		sp_block_power_ctrl(anx78xx, SP_TX_PWR_HDCP, SP_POWER_ON);
+		sp_write_reg(anx78xx, TX_P2, SP_COMMON_INT_MASK2, 0x01);
+		msleep(50);
+		sp_tx_hw_hdcp_enable(anx78xx);
+		sp.hcdp_state = HDCP_WAITTING_FINISH;
+	/* fallthrough */
+	case HDCP_WAITTING_FINISH:
+		break;
+	case HDCP_FINISH:
+		sp_tx_hdcp_encryption_enable(anx78xx);
+		 hdmi_rx_mute_video(anx78xx, 0);
+		sp_tx_video_mute(anx78xx, 0);
+		goto_next_system_state(anx78xx);
+		sp.hcdp_state = HDCP_CAPABLE_CHECK;
+		dev_dbg(dev, "@@@@@@@hdcp_auth_pass@@@@@@\n");
+		break;
+	case HDCP_FAILE:
+		if (sp.hdcp_fail_count > 5) {
+			sp_vbus_power_off(anx78xx);
+			reg_hardware_reset(anx78xx);
+			sp.hcdp_state = HDCP_CAPABLE_CHECK;
+			sp.hdcp_fail_count = 0;
+			dev_dbg(dev, "*********hdcp_auth_failed*********\n");
+		} else {
+			sp.hdcp_fail_count++;
+			sp.hcdp_state = HDCP_WAITTING_VID_STB;
+		}
+		break;
+	default:
+	case HDCP_NOT_SUPPORT:
+		dev_dbg(dev, "Sink is not capable HDCP\n");
+		sp_block_power_ctrl(anx78xx, SP_TX_PWR_HDCP,
+			SP_POWER_DOWN);
+		sp_tx_video_mute(anx78xx, 0);
+		goto_next_system_state(anx78xx);
+		sp.hcdp_state = HDCP_CAPABLE_CHECK;
+		break;
+	}
+}
+/******************End HDCP process********************/
+
+/******************Start Audio process********************/
+static void sp_tx_audioinfoframe_setup(struct anx78xx *anx78xx)
+{
+	int i;
+	u8 c;
+
+	sp_read_reg(anx78xx, RX_P1, HDMI_RX_AUDIO_TYPE_REG, &c);
+	sp.tx_audioinfoframe.type = c;
+	sp_read_reg(anx78xx, RX_P1, HDMI_RX_AUDIO_VER_REG, &c);
+	sp.tx_audioinfoframe.version = c;
+	sp_read_reg(anx78xx, RX_P1, HDMI_RX_AUDIO_LEN_REG, &c);
+	sp.tx_audioinfoframe.length = c;
+
+	for (i = 0; i < 11; i++) {
+		sp_read_reg(anx78xx, RX_P1, (HDMI_RX_AUDIO_DATA00_REG + i), &c);
+		sp.tx_audioinfoframe.pb_byte[i] = c;
+	}
+}
+
+static void sp_tx_enable_audio_output(struct anx78xx *anx78xx, u8 benable)
+{
+	u8 c;
+
+	sp_read_reg(anx78xx, TX_P0, SP_TX_AUD_CTRL, &c);
+	if (benable) {
+		if (c & AUD_EN) {
+			c &= ~AUD_EN;
+			sp_write_reg(anx78xx, TX_P0, SP_TX_AUD_CTRL, c);
+		}
+		sp_tx_audioinfoframe_setup(anx78xx);
+		sp_tx_config_packets(anx78xx, AUDIF_PACKETS);
+
+		c |= AUD_EN;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_AUD_CTRL, c);
+
+	} else {
+		c &= ~AUD_EN;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_AUD_CTRL, c);
+		sp_write_reg_and(anx78xx, TX_P0, SP_TX_PKT_EN_REG, ~AUD_IF_EN);
+	}
+}
+
+static void sp_tx_config_audio(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 c;
+	int i;
+	ulong M_AUD, LS_Clk = 0;
+	ulong AUD_Freq = 0;
+
+	dev_dbg(dev, "**Config audio **\n");
+	sp_block_power_ctrl(anx78xx, SP_TX_PWR_AUDIO, SP_POWER_ON);
+	sp_read_reg(anx78xx, RX_P0, 0xCA, &c);
+
+	switch (c & 0x0f) {
+	case 0x00:
+		AUD_Freq = 44.1;
+		break;
+	case 0x02:
+		AUD_Freq = 48;
+		break;
+	case 0x03:
+		AUD_Freq = 32;
+		break;
+	case 0x08:
+		AUD_Freq = 88.2;
+		break;
+	case 0x0a:
+		AUD_Freq = 96;
+		break;
+	case 0x0c:
+		AUD_Freq = 176.4;
+		break;
+	case 0x0e:
+		AUD_Freq = 192;
+		break;
+	default:
+		break;
+	}
+
+
+	switch (sp_tx_get_link_bw(anx78xx)) {
+	case LINK_1P62G:
+		LS_Clk = 162000;
+		break;
+	case LINK_2P7G:
+		LS_Clk = 270000;
+		break;
+	case LINK_5P4G:
+		LS_Clk = 540000;
+		break;
+	case LINK_6P75G:
+		LS_Clk = 675000;
+		break;
+	default:
+		break;
+	}
+
+	dev_dbg(dev, "AUD_Freq = %ld , LS_CLK = %ld\n", AUD_Freq, LS_Clk);
+
+	M_AUD = ((512 * AUD_Freq) / LS_Clk) * 32768;
+	M_AUD = M_AUD + 0x05;
+	sp_write_reg(anx78xx, TX_P1, SP_TX_AUD_INTERFACE_CTRL4, (M_AUD & 0xff));
+	M_AUD = M_AUD >> 8;
+	sp_write_reg(anx78xx, TX_P1, SP_TX_AUD_INTERFACE_CTRL5, (M_AUD & 0xff));
+	sp_write_reg(anx78xx, TX_P1, SP_TX_AUD_INTERFACE_CTRL6, 0x00);
+
+	sp_write_reg_and(anx78xx, TX_P1, SP_TX_AUD_INTERFACE_CTRL0,
+			(u8)~AUD_INTERFACE_DISABLE);
+
+	sp_write_reg_or(anx78xx, TX_P1, SP_TX_AUD_INTERFACE_CTRL2,
+			M_AUD_ADJUST_ST);
+
+	sp_read_reg(anx78xx, RX_P0, HDMI_STATUS, &c);
+	if (c & HDMI_AUD_LAYOUT)
+		sp_write_reg_or(anx78xx, TX_P2, SP_TX_AUD_CH_NUM_REG5,
+				CH_NUM_8 | AUD_LAYOUT);
+	else
+		sp_write_reg_and(anx78xx, TX_P2, SP_TX_AUD_CH_NUM_REG5,
+				(u8)(~CH_NUM_8) & (~AUD_LAYOUT));
+
+	/* transfer audio chaneel status from HDMI Rx to Slinmport Tx */
+	for (i = 0; i < 5; i++) {
+		sp_read_reg(anx78xx, RX_P0, (HDMI_RX_AUD_IN_CH_STATUS1_REG + i),
+			 &c);
+		sp_write_reg(anx78xx, TX_P2, (SP_TX_AUD_CH_STATUS_REG1 + i), c);
+	}
+
+	/* enable audio */
+	sp_tx_enable_audio_output(anx78xx, 1);
+}
+
+static void sp_config_audio_output(struct anx78xx *anx78xx)
+{
+	static u8 count;
+
+	switch (sp.tx_ao_state) {
+	default:
+	case AO_INIT:
+	case AO_CTS_RCV_INT:
+	case AO_AUDIO_RCV_INT:
+		if (!(sp_i2c_read_byte(anx78xx, RX_P0, HDMI_STATUS)
+		    & HDMI_MODE)) {
+			sp.tx_ao_state = AO_INIT;
+			goto_next_system_state(anx78xx);
+		}
+		break;
+	case AO_RCV_INT_FINISH:
+		if (count++ > 2)
+			sp.tx_ao_state = AO_OUTPUT;
+		else
+			sp.tx_ao_state = AO_INIT;
+		SP_BREAK(AO_INIT, sp.tx_ao_state);
+	/* fallthrough */
+	case AO_OUTPUT:
+		count = 0;
+		sp.tx_ao_state = AO_INIT;
+		 hdmi_rx_mute_audio(anx78xx, 0);
+		sp_tx_config_audio(anx78xx);
+		goto_next_system_state(anx78xx);
+		break;
+	}
+}
+/******************End Audio process********************/
+
+void sp_initialization(struct anx78xx *anx78xx)
+{
+	/* Waitting Hot plug event! */
+	if (!(sp.common_int_status.common_int[3] & PLUG))
+		return;
+
+	sp.read_edid_flag = 0;
+
+	/* Power on all modules */
+	sp_write_reg(anx78xx, TX_P2, SP_POWERD_CTRL_REG, 0x00);
+	/* Driver Version */
+	sp_write_reg(anx78xx, TX_P1, FW_VER_REG, FW_VERSION);
+	hdmi_rx_initialization(anx78xx);
+	sp_tx_initialization(anx78xx);
+	msleep(200);
+	goto_next_system_state(anx78xx);
+}
+
+static void sp_hdcp_external_ctrl_flag_monitor(struct anx78xx *anx78xx)
+{
+	static u8 cur_flag;
+
+	if (sp.block_en != cur_flag) {
+		cur_flag = sp.block_en;
+		system_state_change_with_case(anx78xx, STATE_HDCP_AUTH);
+	}
+}
+
+static void sp_state_process(struct anx78xx *anx78xx)
+{
+	switch (sp.tx_system_state) {
+	case STATE_WAITTING_CABLE_PLUG:
+		sp_waiting_cable_plug_process(anx78xx);
+		SP_BREAK(STATE_WAITTING_CABLE_PLUG, sp.tx_system_state);
+	/* fallthrough */
+	case STATE_SP_INITIALIZED:
+		sp_initialization(anx78xx);
+		SP_BREAK(STATE_SP_INITIALIZED, sp.tx_system_state);
+	/* fallthrough */
+	case STATE_SINK_CONNECTION:
+		sp_sink_connection(anx78xx);
+		SP_BREAK(STATE_SINK_CONNECTION, sp.tx_system_state);
+	/* fallthrough */
+	case STATE_PARSE_EDID:
+		sp_edid_process(anx78xx);
+		SP_BREAK(STATE_PARSE_EDID, sp.tx_system_state);
+	/* fallthrough */
+	case STATE_LINK_TRAINING:
+		sp_link_training(anx78xx);
+		SP_BREAK(STATE_LINK_TRAINING, sp.tx_system_state);
+	/* fallthrough */
+	case STATE_VIDEO_OUTPUT:
+		sp_config_video_output(anx78xx);
+		SP_BREAK(STATE_VIDEO_OUTPUT, sp.tx_system_state);
+	/* fallthrough */
+	case STATE_HDCP_AUTH:
+		sp_hdcp_process(anx78xx);
+		SP_BREAK(STATE_HDCP_AUTH, sp.tx_system_state);
+	/* fallthrough */
+	case STATE_AUDIO_OUTPUT:
+		sp_config_audio_output(anx78xx);
+		SP_BREAK(STATE_AUDIO_OUTPUT, sp.tx_system_state);
+	/* fallthrough */
+	case STATE_PLAY_BACK:
+		SP_BREAK(STATE_PLAY_BACK, sp.tx_system_state);
+	/* fallthrough */
+	default:
+		break;
+	}
+}
+
+/******************Start INT process********************/
+static void sp_tx_int_rec(struct anx78xx *anx78xx)
+{
+	sp_read_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1,
+		&sp.common_int_status.common_int[0]);
+	sp_write_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1,
+		sp.common_int_status.common_int[0]);
+
+	sp_read_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1 + 1,
+		&sp.common_int_status.common_int[1]);
+	sp_write_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1 + 1,
+		sp.common_int_status.common_int[1]);
+
+	sp_read_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1 + 2,
+		&sp.common_int_status.common_int[2]);
+	sp_write_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1 + 2,
+		sp.common_int_status.common_int[2]);
+
+	sp_read_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1 + 3,
+		&sp.common_int_status.common_int[3]);
+	sp_write_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1 + 3,
+		sp.common_int_status.common_int[3]);
+
+	sp_read_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1 + 6,
+		&sp.common_int_status.common_int[4]);
+	sp_write_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1 + 6,
+		sp.common_int_status.common_int[4]);
+}
+
+static void sp_hdmi_rx_int_rec(struct anx78xx *anx78xx)
+{
+	 sp_read_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS1_REG,
+		&sp.hdmi_rx_int_status.hdmi_rx_int[0]);
+	 sp_write_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS1_REG,
+		sp.hdmi_rx_int_status.hdmi_rx_int[0]);
+	 sp_read_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS2_REG,
+		&sp.hdmi_rx_int_status.hdmi_rx_int[1]);
+	 sp_write_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS2_REG,
+		sp.hdmi_rx_int_status.hdmi_rx_int[1]);
+	 sp_read_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS3_REG,
+		&sp.hdmi_rx_int_status.hdmi_rx_int[2]);
+	 sp_write_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS3_REG,
+		sp.hdmi_rx_int_status.hdmi_rx_int[2]);
+	 sp_read_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS4_REG,
+		&sp.hdmi_rx_int_status.hdmi_rx_int[3]);
+	 sp_write_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS4_REG,
+		sp.hdmi_rx_int_status.hdmi_rx_int[3]);
+	 sp_read_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS5_REG,
+		&sp.hdmi_rx_int_status.hdmi_rx_int[4]);
+	 sp_write_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS5_REG,
+		sp.hdmi_rx_int_status.hdmi_rx_int[4]);
+	 sp_read_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS6_REG,
+		&sp.hdmi_rx_int_status.hdmi_rx_int[5]);
+	 sp_write_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS6_REG,
+		sp.hdmi_rx_int_status.hdmi_rx_int[5]);
+	 sp_read_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS7_REG,
+		&sp.hdmi_rx_int_status.hdmi_rx_int[6]);
+	 sp_write_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS7_REG,
+		sp.hdmi_rx_int_status.hdmi_rx_int[6]);
+}
+
+static void sp_int_rec(struct anx78xx *anx78xx)
+{
+	sp_tx_int_rec(anx78xx);
+	sp_hdmi_rx_int_rec(anx78xx);
+}
+/******************End INT process********************/
+
+/******************Start task process********************/
+static void sp_tx_pll_changed_int_handler(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	if (sp.tx_system_state >= STATE_LINK_TRAINING) {
+		if (!sp_tx_get_pll_lock_status(anx78xx)) {
+			dev_dbg(dev, "PLL:PLL not lock!\n");
+			sp_tx_set_sys_state(anx78xx, STATE_LINK_TRAINING);
+		}
+	}
+}
+
+static void sp_tx_hdcp_link_chk_fail_handler(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	system_state_change_with_case(anx78xx, STATE_HDCP_AUTH);
+
+	dev_dbg(dev, "hdcp_link_chk_fail:HDCP Sync lost!\n");
+}
+
+static void sp_tx_phy_auto_test(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 b_sw;
+	u8 c1;
+	u8 bytebuf[16];
+	u8 link_bw;
+
+	/* DPCD 0x219 TEST_LINK_RATE */
+	sp_tx_aux_dpcdread_bytes(anx78xx, 0x0, 0x02, 0x19, 1, bytebuf);
+	dev_dbg(dev, "DPCD:0x00219 = %.2x\n", (u16)bytebuf[0]);
+	switch (bytebuf[0]) {
+	case 0x06:
+	case 0x0A:
+	case 0x14:
+	case 0x19:
+		sp_tx_set_link_bw(anx78xx, bytebuf[0]);
+		sp.tx_test_bw = bytebuf[0];
+		break;
+	default:
+		sp_tx_set_link_bw(anx78xx, 0x19);
+		sp.tx_test_bw = 0x19;
+		break;
+	}
+
+
+	/* DPCD 0x248 PHY_TEST_PATTERN */
+	sp_tx_aux_dpcdread_bytes(anx78xx, 0x0, 0x02, 0x48, 1, bytebuf);
+	dev_dbg(dev, "DPCD:0x00248 = %.2x\n", (u16)bytebuf[0]);
+	switch (bytebuf[0]) {
+	case 0:
+		break;
+	case 1:
+		sp_write_reg(anx78xx, TX_P0, SP_TX_TRAINING_PTN_SET_REG, 0x04);
+		break;
+	case 2:
+		sp_write_reg(anx78xx, TX_P0, SP_TX_TRAINING_PTN_SET_REG, 0x08);
+		break;
+	case 3:
+		sp_write_reg(anx78xx, TX_P0, SP_TX_TRAINING_PTN_SET_REG, 0x0c);
+		break;
+	case 4:
+		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x50, 0xa,
+			bytebuf);
+		sp_write_reg(anx78xx, TX_P1, 0x80, bytebuf[0]);
+		sp_write_reg(anx78xx, TX_P1, 0x81, bytebuf[1]);
+		sp_write_reg(anx78xx, TX_P1, 0x82, bytebuf[2]);
+		sp_write_reg(anx78xx, TX_P1, 0x83, bytebuf[3]);
+		sp_write_reg(anx78xx, TX_P1, 0x84, bytebuf[4]);
+		sp_write_reg(anx78xx, TX_P1, 0x85, bytebuf[5]);
+		sp_write_reg(anx78xx, TX_P1, 0x86, bytebuf[6]);
+		sp_write_reg(anx78xx, TX_P1, 0x87, bytebuf[7]);
+		sp_write_reg(anx78xx, TX_P1, 0x88, bytebuf[8]);
+		sp_write_reg(anx78xx, TX_P1, 0x89, bytebuf[9]);
+		sp_write_reg(anx78xx, TX_P0, SP_TX_TRAINING_PTN_SET_REG, 0x30);
+		break;
+	case 5:
+		sp_write_reg(anx78xx, TX_P0, 0xA9, 0x00);
+		sp_write_reg(anx78xx, TX_P0, 0xAA, 0x01);
+		sp_write_reg(anx78xx, TX_P0, SP_TX_TRAINING_PTN_SET_REG, 0x14);
+		break;
+	}
+
+	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00, 0x03, 1, bytebuf);
+	dev_dbg(dev, "DPCD:0x00003 = %.2x\n", (u16)bytebuf[0]);
+	switch (bytebuf[0] & 0x01) {
+	case 0:
+		sp_tx_spread_enable(anx78xx, 0);
+		break;
+	case 1:
+		sp_read_reg(anx78xx, TX_P0, SP_TX_LINK_BW_SET_REG, &c1);
+		switch (c1) {
+		case 0x06:
+			link_bw = 0x06;
+			break;
+		case 0x0a:
+			link_bw = 0x0a;
+			break;
+		case 0x14:
+			link_bw = 0x14;
+			break;
+		case 0x19:
+			link_bw = 0x19;
+			break;
+		default:
+			link_bw = 0x00;
+			break;
+		}
+		sp_tx_config_ssc(anx78xx, SSC_DEP_4000PPM);
+		break;
+	}
+
+	/* get swing and emphasis adjust request */
+	sp_read_reg(anx78xx, TX_P0, 0xA3, &b_sw);
+
+	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x06, 1, bytebuf);
+	dev_dbg(dev, "DPCD:0x00206 = %.2x\n", (u16)bytebuf[0]);
+	c1 = bytebuf[0] & 0x0f;
+	switch (c1) {
+	case 0x00:
+		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x00);
+		break;
+	case 0x01:
+		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x01);
+		break;
+	case 0x02:
+		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x02);
+		break;
+	case 0x03:
+		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x03);
+		break;
+	case 0x04:
+		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x08);
+		break;
+	case 0x05:
+		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x09);
+		break;
+	case 0x06:
+		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x0a);
+		break;
+	case 0x08:
+		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x10);
+		break;
+	case 0x09:
+		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x11);
+		break;
+	case 0x0c:
+		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x18);
+		break;
+	default:
+		break;
+	}
+}
+
+static void sp_hpd_irq_process(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 c, c1;
+	u8 test_vector;
+	u8 data_buf[6];
+
+	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x00, 6, data_buf);
+	dev_dbg(dev, "+++++++++++++Get HPD IRQ %x\n", (int)data_buf[1]);
+
+	if (data_buf[1] != 0)
+		sp_tx_aux_dpcdwrite_bytes(anx78xx, 0x00, 0x02,
+			DPCD_SERVICE_IRQ_VECTOR, 1, &(data_buf[1]));
+
+	/* HDCP IRQ */
+	if (data_buf[1] & CP_IRQ) {
+		if (sp.hcdp_state > HDCP_WAITTING_FINISH
+			|| sp.tx_system_state > STATE_HDCP_AUTH) {
+			sp_tx_aux_dpcdread_bytes(anx78xx, 0x06, 0x80, 0x29, 1,
+						&c1);
+			if (c1 & 0x04) {
+				system_state_change_with_case(anx78xx,
+						STATE_HDCP_AUTH);
+				dev_dbg(dev, "IRQ:_______HDCP Sync lost!\n");
+			}
+		}
+	}
+
+	/* AUTOMATED TEST IRQ */
+	if (data_buf[1] & TEST_IRQ) {
+		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x18, 1,
+				&test_vector);
+
+		if (test_vector & 0x01) {
+			sp.tx_test_lt = 1;
+
+			sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x19, 1,
+						&c);
+			switch (c) {
+			case 0x06:
+			case 0x0A:
+			case 0x14:
+			case 0x19:
+				sp_tx_set_link_bw(anx78xx, c);
+				sp.tx_test_bw = c;
+				break;
+			default:
+				sp_tx_set_link_bw(anx78xx, 0x19);
+				sp.tx_test_bw = 0x19;
+				break;
+			}
+
+			dev_dbg(dev, " test_bw = %.2x\n", (u16)sp.tx_test_bw);
+
+			sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x60, 1,
+						&c);
+			c = c | TEST_ACK;
+			sp_tx_aux_dpcdwrite_bytes(anx78xx, 0x00, 0x02, 0x60, 1,
+						&c);
+
+			dev_dbg(dev, "Set TEST_ACK!\n");
+			if (sp.tx_system_state >= STATE_LINK_TRAINING) {
+				sp.tx_lt_state = LT_INIT;
+				sp_tx_set_sys_state(anx78xx,
+						STATE_LINK_TRAINING);
+			}
+			dev_dbg(dev, "IRQ:test-LT request!\n");
+		}
+
+		if (test_vector & 0x02) {
+			sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x60, 1,
+						&c);
+			c = c | TEST_ACK;
+			sp_tx_aux_dpcdwrite_bytes(anx78xx, 0x00, 0x02, 0x60, 1,
+						&c);
+		}
+		if (test_vector & 0x04) {
+			if (sp.tx_system_state > STATE_PARSE_EDID)
+				sp_tx_set_sys_state(anx78xx, STATE_PARSE_EDID);
+			sp.tx_test_edid = 1;
+			dev_dbg(dev, "Test EDID Requested!\n");
+		}
+
+		if (test_vector & 0x08) {
+			sp.tx_test_lt = 1;
+
+			sp_tx_phy_auto_test(anx78xx);
+
+			sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x60, 1,
+						&c);
+			c = c | 0x01;
+			sp_tx_aux_dpcdwrite_bytes(anx78xx, 0x00, 0x02, 0x60, 1,
+						&c);
+		}
+	}
+
+	if (sp.tx_system_state > STATE_LINK_TRAINING) {
+		if (!(data_buf[4] & 0x01)
+		|| ((data_buf[2] & (0x01 | 0x04)) != 0x05)) {
+			sp_tx_set_sys_state(anx78xx, STATE_LINK_TRAINING);
+			dev_dbg(dev, "INT:re-LT request!\n");
+			return;
+		}
+
+		dev_dbg(dev, "Lane align %x\n", (u16)data_buf[4]);
+		dev_dbg(dev, "Lane clock recovery %x\n", (u16)data_buf[2]);
+	}
+}
+
+static void sp_tx_vsi_setup(struct anx78xx *anx78xx)
+{
+	u8 c;
+	int i;
+
+	for (i = 0; i < 10; i++) {
+		sp_read_reg(anx78xx, RX_P1, (HDMI_RX_MPEG_DATA00_REG + i), &c);
+		sp.tx_packet_mpeg.mpeg_data[i] = c;
+	}
+}
+
+static void sp_tx_mpeg_setup(struct anx78xx *anx78xx)
+{
+	u8 c;
+	int i;
+
+	for (i = 0; i < 10; i++) {
+		sp_read_reg(anx78xx, RX_P1, (HDMI_RX_MPEG_DATA00_REG + i), &c);
+		sp.tx_packet_mpeg.mpeg_data[i] = c;
+	}
+}
+
+static void sp_tx_auth_done_int_handler(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 bytebuf[2];
+
+	if (sp.hcdp_state > HDCP_HW_ENABLE
+		&& sp.tx_system_state == STATE_HDCP_AUTH) {
+		sp_read_reg(anx78xx, TX_P0, SP_TX_HDCP_STATUS, bytebuf);
+		if (bytebuf[0] & SP_TX_HDCP_AUTH_PASS) {
+			sp_tx_aux_dpcdread_bytes(anx78xx, 0x06, 0x80, 0x2A, 2,
+						bytebuf);
+			if ((bytebuf[1] & 0x08) || (bytebuf[0] & 0x80)) {
+				dev_dbg(dev, "max cascade/devs exceeded!\n");
+				sp_tx_hdcp_encryption_disable(anx78xx);
+			} else
+				dev_dbg(dev, "%s\n",
+					"Authentication pass in Auth_Done");
+
+			sp.hcdp_state = HDCP_FINISH;
+		} else {
+			dev_err(dev, "Authentication failed in AUTH_done\n");
+			sp_tx_video_mute(anx78xx, 1);
+			sp_tx_clean_hdcp_status(anx78xx);
+			sp.hcdp_state = HDCP_FAILE;
+		}
+	}
+
+	dev_dbg(dev, "sp_tx_auth_done_int_handler\n");
+}
+
+static void sp_tx_lt_done_int_handler(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 c;
+
+	if (sp.tx_lt_state == LT_WAITTING_FINISH
+		&& sp.tx_system_state == STATE_LINK_TRAINING) {
+		sp_read_reg(anx78xx, TX_P0, LT_CTRL, &c);
+		if (c & 0x70) {
+			c = (c & 0x70) >> 4;
+			dev_dbg(dev, "LT failed in interrupt, ERR = %.2x\n",
+				(u16) c);
+			sp.tx_lt_state = LT_ERROR;
+		} else {
+			dev_dbg(dev, "lt_done: LT Finish\n");
+			sp.tx_lt_state = LT_FINISH;
+		}
+	}
+
+}
+
+static void sp_hdmi_rx_clk_det_int(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	dev_dbg(dev, "*HDMI_RX Interrupt: Pixel Clock Change.\n");
+	if (sp.tx_system_state > STATE_VIDEO_OUTPUT) {
+		sp_tx_video_mute(anx78xx, 1);
+		sp_tx_enable_audio_output(anx78xx, 0);
+		sp_tx_set_sys_state(anx78xx, STATE_VIDEO_OUTPUT);
+	}
+}
+
+static void sp_hdmi_rx_sync_det_int(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	dev_dbg(dev, "*HDMI_RX Interrupt: Sync Detect.\n");
+}
+
+static void sp_hdmi_rx_hdmi_dvi_int(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 c;
+
+	dev_dbg(dev, "sp_hdmi_rx_hdmi_dvi_int.\n");
+	sp_read_reg(anx78xx, RX_P0, HDMI_STATUS, &c);
+	sp.hdmi_dvi_status = 1;
+	if ((c & BIT(0)) != (sp.hdmi_dvi_status & BIT(0))) {
+		dev_dbg(dev, "hdmi_dvi_int: Is HDMI MODE: %x.\n",
+			(u16)(c & HDMI_MODE));
+		sp.hdmi_dvi_status = (c & BIT(0));
+		hdmi_rx_mute_audio(anx78xx, 1);
+		system_state_change_with_case(anx78xx, STATE_LINK_TRAINING);
+	}
+}
+
+static void sp_hdmi_rx_new_avi_int(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	dev_dbg(dev, "*HDMI_RX Interrupt: New AVI Packet.\n");
+	sp_tx_lvttl_bit_mapping(anx78xx);
+	sp_tx_set_colorspace(anx78xx);
+	sp_tx_avi_setup(anx78xx);
+	sp_tx_config_packets(anx78xx, AVI_PACKETS);
+}
+
+static void sp_hdmi_rx_new_vsi_int(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 hdmi_video_format, v3d_structure;
+
+	dev_dbg(dev, "*HDMI_RX Interrupt: NEW VSI packet.\n");
+
+	sp_write_reg_and(anx78xx, TX_P0, SP_TX_3D_VSC_CTRL, ~INFO_FRAME_VSC_EN);
+	/* VSI package header */
+	if ((sp_i2c_read_byte(anx78xx, RX_P1, HDMI_RX_MPEG_TYPE_REG) != 0x81)
+		|| (sp_i2c_read_byte(anx78xx, RX_P1, HDMI_RX_MPEG_VER_REG)
+		!= 0x01))
+		return;
+
+	dev_dbg(dev, "Setup VSI package!\n");
+
+	sp_tx_vsi_setup(anx78xx);
+	sp_tx_config_packets(anx78xx, VSI_PACKETS);
+
+	sp_read_reg(anx78xx, RX_P1, HDMI_RX_MPEG_DATA03_REG,
+		&hdmi_video_format);
+
+	if ((hdmi_video_format & 0xe0) == 0x40) {
+		dev_dbg(dev, "3D VSI packet detected. Config VSC packet\n");
+
+		sp_read_reg(anx78xx, RX_P1, HDMI_RX_MPEG_DATA05_REG,
+			&v3d_structure);
+
+		switch (v3d_structure&0xf0) {
+		case 0x00:
+			v3d_structure = 0x02;
+			break;
+		case 0x20:
+			v3d_structure = 0x03;
+			break;
+		case 0x30:
+			v3d_structure = 0x04;
+			break;
+		default:
+			v3d_structure = 0x00;
+			dev_dbg(dev, "3D structure is not supported\n");
+			break;
+		}
+		sp_write_reg(anx78xx, TX_P0, SP_TX_VSC_DB1, v3d_structure);
+	}
+	sp_write_reg_or(anx78xx, TX_P0, SP_TX_3D_VSC_CTRL, INFO_FRAME_VSC_EN);
+	sp_write_reg_and(anx78xx, TX_P0, SP_TX_PKT_EN_REG, ~SPD_IF_EN);
+	sp_write_reg_or(anx78xx, TX_P0, SP_TX_PKT_EN_REG, SPD_IF_UD);
+	sp_write_reg_or(anx78xx, TX_P0, SP_TX_PKT_EN_REG, SPD_IF_EN);
+}
+
+static void sp_hdmi_rx_no_vsi_int(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 c;
+
+	sp_read_reg(anx78xx, TX_P0, SP_TX_3D_VSC_CTRL, &c);
+	if (c & INFO_FRAME_VSC_EN) {
+		dev_dbg(dev, "No new VSI is received, disable  VSC packet\n");
+		c &= ~INFO_FRAME_VSC_EN;
+		sp_write_reg(anx78xx, TX_P0, SP_TX_3D_VSC_CTRL, c);
+		sp_tx_mpeg_setup(anx78xx);
+		sp_tx_config_packets(anx78xx, MPEG_PACKETS);
+	}
+}
+
+static void sp_hdmi_rx_restart_audio_chk(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	dev_dbg(dev, "WAIT_AUDIO: sp_hdmi_rx_restart_audio_chk.\n");
+	system_state_change_with_case(anx78xx, STATE_AUDIO_OUTPUT);
+}
+
+static void sp_hdmi_rx_cts_rcv_int(struct anx78xx *anx78xx)
+{
+	if (sp.tx_ao_state == AO_INIT)
+		sp.tx_ao_state = AO_CTS_RCV_INT;
+	else if (sp.tx_ao_state == AO_AUDIO_RCV_INT)
+		sp.tx_ao_state = AO_RCV_INT_FINISH;
+}
+
+static void sp_hdmi_rx_audio_rcv_int(struct anx78xx *anx78xx)
+{
+	if (sp.tx_ao_state == AO_INIT)
+		sp.tx_ao_state = AO_AUDIO_RCV_INT;
+	else if (sp.tx_ao_state == AO_CTS_RCV_INT)
+		sp.tx_ao_state = AO_RCV_INT_FINISH;
+}
+
+static void sp_hdmi_rx_audio_samplechg_int(struct anx78xx *anx78xx)
+{
+	u16 i;
+	u8 c;
+	/* transfer audio chaneel status from HDMI Rx to Slinmport Tx */
+	for (i = 0; i < 5; i++) {
+		sp_read_reg(anx78xx, RX_P0, (HDMI_RX_AUD_IN_CH_STATUS1_REG + i),
+			&c);
+		sp_write_reg(anx78xx, TX_P2, (SP_TX_AUD_CH_STATUS_REG1 + i), c);
+	}
+}
+
+static void sp_hdmi_rx_hdcp_error_int(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	static u8 count;
+
+	dev_dbg(dev, "*HDMI_RX Interrupt: hdcp error.\n");
+	if (count >= 40) {
+		count = 0;
+		dev_dbg(dev, "Lots of hdcp error occurred ...\n");
+		hdmi_rx_mute_audio(anx78xx, 1);
+		hdmi_rx_mute_video(anx78xx, 1);
+		hdmi_rx_set_hpd(anx78xx, 0);
+		usleep_range(10000, 11000);
+		hdmi_rx_set_hpd(anx78xx, 1);
+	} else
+		count++;
+}
+
+static void sp_hdmi_rx_new_gcp_int(struct anx78xx *anx78xx)
+{
+	u8 c;
+
+	sp_read_reg(anx78xx, RX_P1, HDMI_RX_GENERAL_CTRL, &c);
+	if (c & SET_AVMUTE) {
+		hdmi_rx_mute_video(anx78xx, 1);
+		hdmi_rx_mute_audio(anx78xx, 1);
+	} else if (c & CLEAR_AVMUTE) {
+		hdmi_rx_mute_video(anx78xx, 0);
+		hdmi_rx_mute_audio(anx78xx, 0);
+	}
+}
+
+static void sp_tx_hpd_int_handler(struct anx78xx *anx78xx, u8 hpd_source)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	dev_dbg(dev, "sp_tx_hpd_int_handler\n");
+
+	switch (hpd_source) {
+	case HPD_LOST:
+		hdmi_rx_set_hpd(anx78xx, 0);
+		sp_tx_set_sys_state(anx78xx, STATE_WAITTING_CABLE_PLUG);
+		break;
+	case HPD_CHANGE:
+		dev_dbg(dev, "HPD:____________HPD changed!\n");
+		usleep_range(2000, 4000);
+		if (sp.common_int_status.common_int[3] & HPD_IRQ)
+			sp_hpd_irq_process(anx78xx);
+
+		if (sp_i2c_read_byte(anx78xx, TX_P0,
+		   SP_TX_SYS_CTRL3_REG) & HPD_STATUS) {
+			if (sp.common_int_status.common_int[3] & HPD_IRQ)
+				sp_hpd_irq_process(anx78xx);
+		} else {
+			if (sp_i2c_read_byte(anx78xx, TX_P0,
+			    SP_TX_SYS_CTRL3_REG)
+				& HPD_STATUS) {
+				hdmi_rx_set_hpd(anx78xx, 0);
+				sp_tx_set_sys_state(anx78xx,
+					STATE_WAITTING_CABLE_PLUG);
+			}
+		}
+		break;
+	case PLUG:
+		dev_dbg(dev, "HPD:____________HPD changed!\n");
+		if (sp.tx_system_state < STATE_SP_INITIALIZED)
+			sp_tx_set_sys_state(anx78xx, STATE_SP_INITIALIZED);
+		break;
+	default:
+		break;
+	}
+}
+
+static void sp_system_isr_handler(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	if (sp.common_int_status.common_int[3] & HPD_CHANGE)
+		sp_tx_hpd_int_handler(anx78xx, HPD_CHANGE);
+	if (sp.common_int_status.common_int[3] & HPD_LOST)
+		sp_tx_hpd_int_handler(anx78xx, HPD_LOST);
+	if (sp.common_int_status.common_int[3] & HPD_IRQ)
+		dev_dbg(dev, "++++++++++++++++========HDCP_IRQ interrupt\n");
+	if (sp.common_int_status.common_int[0] & PLL_LOCK_CHG)
+		sp_tx_pll_changed_int_handler(anx78xx);
+
+	if (sp.common_int_status.common_int[1] & HDCP_AUTH_DONE)
+		sp_tx_auth_done_int_handler(anx78xx);
+
+	if (sp.common_int_status.common_int[2] & HDCP_LINK_CHECK_FAIL)
+		sp_tx_hdcp_link_chk_fail_handler(anx78xx);
+
+	if (sp.common_int_status.common_int[4] & TRAINING_Finish)
+		sp_tx_lt_done_int_handler(anx78xx);
+
+	if (sp.tx_system_state > STATE_SINK_CONNECTION) {
+		if (sp.hdmi_rx_int_status.hdmi_rx_int[5] & NEW_AVI)
+			sp_hdmi_rx_new_avi_int(anx78xx);
+	}
+
+	if (sp.tx_system_state > STATE_VIDEO_OUTPUT) {
+		if (sp.hdmi_rx_int_status.hdmi_rx_int[6] & NEW_VS) {
+			sp.hdmi_rx_int_status.hdmi_rx_int[6] &= ~NO_VSI;
+			sp_hdmi_rx_new_vsi_int(anx78xx);
+		}
+		if (sp.hdmi_rx_int_status.hdmi_rx_int[6] & NO_VSI)
+			sp_hdmi_rx_no_vsi_int(anx78xx);
+	}
+
+	if (sp.tx_system_state >= STATE_VIDEO_OUTPUT) {
+		if (sp.hdmi_rx_int_status.hdmi_rx_int[0] & CKDT_CHANGE)
+			sp_hdmi_rx_clk_det_int(anx78xx);
+
+		if (sp.hdmi_rx_int_status.hdmi_rx_int[0] & SCDT_CHANGE)
+			sp_hdmi_rx_sync_det_int(anx78xx);
+
+		if (sp.hdmi_rx_int_status.hdmi_rx_int[0] & HDMI_DVI)
+			sp_hdmi_rx_hdmi_dvi_int(anx78xx);
+
+		if ((sp.hdmi_rx_int_status.hdmi_rx_int[5] & NEW_AUD)
+		     || (sp.hdmi_rx_int_status.hdmi_rx_int[2] & AUD_MODE_CHANGE
+		   ))
+			sp_hdmi_rx_restart_audio_chk(anx78xx);
+
+		if (sp.hdmi_rx_int_status.hdmi_rx_int[5] & CTS_RCV)
+			sp_hdmi_rx_cts_rcv_int(anx78xx);
+
+		if (sp.hdmi_rx_int_status.hdmi_rx_int[4] & AUDIO_RCV)
+			sp_hdmi_rx_audio_rcv_int(anx78xx);
+
+
+		if (sp.hdmi_rx_int_status.hdmi_rx_int[1] & HDCP_ERR)
+			sp_hdmi_rx_hdcp_error_int(anx78xx);
+
+		if (sp.hdmi_rx_int_status.hdmi_rx_int[5] & NEW_CP)
+			sp_hdmi_rx_new_gcp_int(anx78xx);
+
+		if (sp.hdmi_rx_int_status.hdmi_rx_int[1] & AUDIO_SAMPLE_CHANGE)
+			sp_hdmi_rx_audio_samplechg_int(anx78xx);
+	}
+}
+
+static void sp_tx_show_information(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 c, c1;
+	u16 h_res, h_act, v_res, v_act;
+	u16 h_fp, h_sw, h_bp, v_fp, v_sw, v_bp;
+	ulong fresh_rate;
+	ulong pclk;
+
+	dev_dbg(dev, "\n***************SP Video Information****************\n");
+
+	sp_read_reg(anx78xx, TX_P0, SP_TX_LINK_BW_SET_REG, &c);
+	switch (c) {
+	case 0x06:
+		dev_dbg(dev, "BW = 1.62G\n");
+		break;
+	case 0x0a:
+		dev_dbg(dev, "BW = 2.7G\n");
+		break;
+	case 0x14:
+		dev_dbg(dev, "BW = 5.4G\n");
+		break;
+	case 0x19:
+		dev_dbg(dev, "BW = 6.75G\n");
+		break;
+	default:
+		break;
+	}
+
+	pclk = sp_tx_pclk_calc(anx78xx);
+	pclk = pclk / 10;
+
+	sp_read_reg(anx78xx, TX_P2, SP_TX_TOTAL_LINE_STA_L, &c);
+	sp_read_reg(anx78xx, TX_P2, SP_TX_TOTAL_LINE_STA_H, &c1);
+
+	v_res = c1;
+	v_res = v_res << 8;
+	v_res = v_res + c;
+
+
+	sp_read_reg(anx78xx, TX_P2, SP_TX_ACT_LINE_STA_L, &c);
+	sp_read_reg(anx78xx, TX_P2, SP_TX_ACT_LINE_STA_H, &c1);
+
+	v_act = c1;
+	v_act = v_act << 8;
+	v_act = v_act + c;
+
+
+	sp_read_reg(anx78xx, TX_P2, SP_TX_TOTAL_PIXEL_STA_L, &c);
+	sp_read_reg(anx78xx, TX_P2, SP_TX_TOTAL_PIXEL_STA_H, &c1);
+
+	h_res = c1;
+	h_res = h_res << 8;
+	h_res = h_res + c;
+
+
+	sp_read_reg(anx78xx, TX_P2, SP_TX_ACT_PIXEL_STA_L, &c);
+	sp_read_reg(anx78xx, TX_P2, SP_TX_ACT_PIXEL_STA_H, &c1);
+
+	h_act = c1;
+	h_act = h_act << 8;
+	h_act = h_act + c;
+
+	sp_read_reg(anx78xx, TX_P2, SP_TX_H_F_PORCH_STA_L, &c);
+	sp_read_reg(anx78xx, TX_P2, SP_TX_H_F_PORCH_STA_H, &c1);
+
+	h_fp = c1;
+	h_fp = h_fp << 8;
+	h_fp = h_fp + c;
+
+	sp_read_reg(anx78xx, TX_P2, SP_TX_H_SYNC_STA_L, &c);
+	sp_read_reg(anx78xx, TX_P2, SP_TX_H_SYNC_STA_H, &c1);
+
+	h_sw = c1;
+	h_sw = h_sw << 8;
+	h_sw = h_sw + c;
+
+	sp_read_reg(anx78xx, TX_P2, SP_TX_H_B_PORCH_STA_L, &c);
+	sp_read_reg(anx78xx, TX_P2, SP_TX_H_B_PORCH_STA_H, &c1);
+
+	h_bp = c1;
+	h_bp = h_bp << 8;
+	h_bp = h_bp + c;
+
+	sp_read_reg(anx78xx, TX_P2, SP_TX_V_F_PORCH_STA, &c);
+	v_fp = c;
+
+	sp_read_reg(anx78xx, TX_P2, SP_TX_V_SYNC_STA, &c);
+	v_sw = c;
+
+	sp_read_reg(anx78xx, TX_P2, SP_TX_V_B_PORCH_STA, &c);
+	v_bp = c;
+
+	dev_dbg(dev, "Total resolution is %d * %d\n", h_res, v_res);
+
+	dev_dbg(dev, "HF=%d, HSW=%d, HBP=%d\n", h_fp, h_sw, h_bp);
+	dev_dbg(dev, "VF=%d, VSW=%d, VBP=%d\n", v_fp, v_sw, v_bp);
+	dev_dbg(dev, "Active resolution is %d * %d", h_act, v_act);
+
+	if (h_res == 0 || v_res == 0)
+		fresh_rate = 0;
+	else {
+		fresh_rate = pclk * 1000;
+		fresh_rate = fresh_rate / h_res;
+		fresh_rate = fresh_rate * 1000;
+		fresh_rate = fresh_rate / v_res;
+	}
+	dev_dbg(dev, "   @ %ldHz\n", fresh_rate);
+
+	sp_read_reg(anx78xx, TX_P0, SP_TX_VID_CTRL, &c);
+
+	if ((c & 0x06) == 0x00)
+		dev_dbg(dev, "ColorSpace: RGB,");
+	else if ((c & 0x06) == 0x02)
+		dev_dbg(dev, "ColorSpace: YCbCr422,");
+	else if ((c & 0x06) == 0x04)
+		dev_dbg(dev, "ColorSpace: YCbCr444,");
+
+	sp_read_reg(anx78xx, TX_P0, SP_TX_VID_CTRL, &c);
+
+	if ((c & 0xe0) == 0x00)
+		dev_dbg(dev, "6 BPC\n");
+	else if ((c & 0xe0) == 0x20)
+		dev_dbg(dev, "8 BPC\n");
+	else if ((c & 0xe0) == 0x40)
+		dev_dbg(dev, "10 BPC\n");
+	else if ((c & 0xe0) == 0x60)
+		dev_dbg(dev, "12 BPC\n");
+
+
+	if (is_anx_dongle(anx78xx)) {
+		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x05, 0x23, 1, &c);
+		dev_dbg(dev, "Analogix Dongle FW Ver %.2x\n", (u16)(c & 0x7f));
+	}
+
+	dev_dbg(dev, "\n**************************************************\n");
+}
+
+static void sp_clean_system_status(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+
+	if (sp.need_clean_status) {
+		dev_dbg(dev, "sp_clean_system_status. A -> B;\n");
+		dev_dbg(dev, "A:");
+		sp_print_sys_state(anx78xx, sp.tx_system_state_bak);
+		dev_dbg(dev, "B:");
+		sp_print_sys_state(anx78xx, sp.tx_system_state);
+
+		sp.need_clean_status = 0;
+		if (sp.tx_system_state_bak >= STATE_LINK_TRAINING) {
+			if (sp.tx_system_state >= STATE_AUDIO_OUTPUT)
+				hdmi_rx_mute_audio(anx78xx, 1);
+			else {
+				hdmi_rx_mute_video(anx78xx, 1);
+				sp_tx_video_mute(anx78xx, 1);
+			}
+		}
+		if (sp.tx_system_state_bak >= STATE_HDCP_AUTH
+			&& sp.tx_system_state <= STATE_HDCP_AUTH) {
+			if (sp_i2c_read_byte(anx78xx, TX_P0, TX_HDCP_CTRL0)
+			    & 0xFC)
+				sp_tx_clean_hdcp_status(anx78xx);
+		}
+
+		if (sp.hcdp_state != HDCP_CAPABLE_CHECK)
+			sp.hcdp_state = HDCP_CAPABLE_CHECK;
+
+		if (sp.tx_sc_state != SC_INIT)
+			sp.tx_sc_state = SC_INIT;
+		if (sp.tx_lt_state != LT_INIT)
+			sp.tx_lt_state = LT_INIT;
+		if (sp.tx_vo_state != VO_WAIT_VIDEO_STABLE)
+			sp.tx_vo_state = VO_WAIT_VIDEO_STABLE;
+	}
+}
+
+/******************add for HDCP cap check********************/
+static u8 sp_hdcp_cap_check(struct anx78xx *anx78xx)
+{
+	struct device *dev = &anx78xx->client->dev;
+	u8 g_hdcp_cap = 0;
+	u8 temp;
+
+	if (AUX_OK == sp_tx_aux_dpcdread_bytes(anx78xx, 0x06, 0x80, 0x28, 1,
+						&temp))
+		g_hdcp_cap = (temp & 0x01) ? 1 : 0;
+	else
+		dev_dbg(dev, "HDCP CAPABLE: read AUX err!\n");
+
+	dev_dbg(dev, "hdcp cap check: %s Supported\n",
+		g_hdcp_cap ? "" : "No");
+
+	return g_hdcp_cap;
+}
+/******************End HDCP cap check********************/
+
+static void sp_tasks_handler(struct anx78xx *anx78xx)
+{
+	sp_system_isr_handler(anx78xx);
+	sp_hdcp_external_ctrl_flag_monitor(anx78xx);
+	sp_clean_system_status(anx78xx);
+	/*clear up backup system state*/
+	if (sp.tx_system_state_bak != sp.tx_system_state)
+		sp.tx_system_state_bak = sp.tx_system_state;
+}
+/******************End task  process********************/
+
+void sp_main_process(struct anx78xx *anx78xx)
+{
+	sp_state_process(anx78xx);
+	if (sp.tx_system_state > STATE_WAITTING_CABLE_PLUG) {
+		sp_int_rec(anx78xx);
+		sp_tasks_handler(anx78xx);
+	}
+}
+
diff --git a/drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.h b/drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.h
new file mode 100644
index 0000000..371ba29
--- /dev/null
+++ b/drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.h
@@ -0,0 +1,215 @@
+/*
+ * Copyright(c) 2015, Analogix Semiconductor. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ */
+
+#ifndef __SLIMPORT_TX_DRV_H
+#define __SLIMPORT_TX_DRV_H
+
+#include "anx78xx.h"
+#include "slimport_tx_reg.h"
+
+#define FW_VERSION	0x22
+
+#define DVI_MODE	0x00
+#define HDMI_MODE	0x01
+
+#define SP_POWER_ON	1
+#define SP_POWER_DOWN	0
+
+#define MAX_BUF_CNT	16
+
+#define SP_BREAK(current_status, next_status) \
+	{ if (next_status != (current_status) + 1) break; }
+
+enum rx_cbl_type {
+	DWN_STRM_IS_NULL,
+	DWN_STRM_IS_HDMI,
+	DWN_STRM_IS_DIGITAL,
+	DWN_STRM_IS_ANALOG,
+	DWN_STRM_NUM
+};
+
+enum sp_tx_state {
+	STATE_WAITTING_CABLE_PLUG,
+	STATE_SP_INITIALIZED,
+	STATE_SINK_CONNECTION,
+	STATE_PARSE_EDID,
+	STATE_LINK_TRAINING,
+	STATE_VIDEO_OUTPUT,
+	STATE_HDCP_AUTH,
+	STATE_AUDIO_OUTPUT,
+	STATE_PLAY_BACK
+};
+
+enum sp_tx_power_block {
+	SP_TX_PWR_REG = REGISTER_PD,
+	SP_TX_PWR_HDCP = HDCP_PD,
+	SP_TX_PWR_AUDIO = AUDIO_PD,
+	SP_TX_PWR_VIDEO = VIDEO_PD,
+	SP_TX_PWR_LINK = LINK_PD,
+	SP_TX_PWR_TOTAL = TOTAL_PD,
+	SP_TX_PWR_NUMS
+};
+
+enum hdmi_color_depth {
+	HDMI_LEGACY = 0x00,
+	HDMI_24BIT = 0x04,
+	HDMI_30BIT = 0x05,
+	HDMI_36BIT = 0x06,
+	HDMI_48BIT = 0x07,
+};
+
+enum sp_tx_send_msg {
+	MSG_OCM_EN,
+	MSG_INPUT_HDMI,
+	MSG_INPUT_DVI,
+	MSG_CLEAR_IRQ,
+};
+
+enum sink_connection_status {
+	SC_INIT,
+	SC_CHECK_CABLE_TYPE,
+	SC_WAITTING_CABLE_TYPE = SC_CHECK_CABLE_TYPE+5,
+	SC_SINK_CONNECTED,
+	SC_NOT_CABLE,
+	SC_STATE_NUM
+};
+
+enum cable_type_status {
+	CHECK_AUXCH,
+	GETTED_CABLE_TYPE,
+	CABLE_TYPE_STATE_NUM
+};
+
+enum sp_tx_lt_status {
+	LT_INIT,
+	LT_WAIT_PLL_LOCK,
+	LT_CHECK_LINK_BW,
+	LT_START,
+	LT_WAITTING_FINISH,
+	LT_ERROR,
+	LT_FINISH,
+	LT_END,
+	LT_STATES_NUM
+};
+
+enum hdcp_status {
+	HDCP_CAPABLE_CHECK,
+	HDCP_WAITTING_VID_STB,
+	HDCP_HW_ENABLE,
+	HDCP_WAITTING_FINISH,
+	HDCP_FINISH,
+	HDCP_FAILE,
+	HDCP_NOT_SUPPORT,
+	HDCP_PROCESS_STATE_NUM
+};
+
+enum video_output_status {
+	VO_WAIT_VIDEO_STABLE,
+	VO_WAIT_TX_VIDEO_STABLE,
+	VO_CHECK_VIDEO_INFO,
+	VO_FINISH,
+	VO_STATE_NUM
+};
+
+enum audio_output_status {
+	AO_INIT,
+	AO_CTS_RCV_INT,
+	AO_AUDIO_RCV_INT,
+	AO_RCV_INT_FINISH,
+	AO_OUTPUT,
+	AO_STATE_NUM
+};
+
+struct packet_avi {
+	u8 avi_data[13];
+};
+
+
+struct packet_spd {
+	u8 spd_data[25];
+};
+
+struct packet_mpeg {
+	u8 mpeg_data[13];
+};
+
+struct audio_info_frame {
+	u8 type;
+	u8 version;
+	u8 length;
+	u8 pb_byte[11];
+};
+
+enum packets_type {
+	AVI_PACKETS,
+	SPD_PACKETS,
+	MPEG_PACKETS,
+	VSI_PACKETS,
+	AUDIF_PACKETS
+};
+
+struct common_int {
+	u8 common_int[5];
+	u8 change_flag;
+};
+
+struct hdmi_rx_int {
+	u8 hdmi_rx_int[7];
+	u8 change_flag;
+};
+
+enum xtal_enum {
+	XTAL_19D2M,
+	XTAL_24M,
+	XTAL_25M,
+	XTAL_26M,
+	XTAL_27M,
+	XTAL_38D4M,
+	XTAL_52M,
+	XTAL_NOT_SUPPORT,
+	XTAL_CLK_NUM
+};
+
+enum sp_ssc_dep {
+	SSC_DEP_DISABLE = 0x0,
+	SSC_DEP_500PPM,
+	SSC_DEP_1000PPM,
+	SSC_DEP_1500PPM,
+	SSC_DEP_2000PPM,
+	SSC_DEP_2500PPM,
+	SSC_DEP_3000PPM,
+	SSC_DEP_3500PPM,
+	SSC_DEP_4000PPM,
+	SSC_DEP_4500PPM,
+	SSC_DEP_5000PPM,
+	SSC_DEP_5500PPM,
+	SSC_DEP_6000PPM
+};
+
+struct anx78xx_clock_data {
+	unsigned char xtal_clk;
+	unsigned int xtal_clk_m10;
+};
+
+bool sp_chip_detect(struct anx78xx *anx78xx);
+
+void sp_main_process(struct anx78xx *anx78xx);
+
+void sp_tx_variable_init(void);
+
+u8 sp_tx_cur_states(void);
+
+void sp_tx_clean_state_machine(void);
+
+#endif
diff --git a/drivers/gpu/drm/bridge/anx78xx/slimport_tx_reg.h b/drivers/gpu/drm/bridge/anx78xx/slimport_tx_reg.h
new file mode 100644
index 0000000..8d89382
--- /dev/null
+++ b/drivers/gpu/drm/bridge/anx78xx/slimport_tx_reg.h
@@ -0,0 +1,786 @@
+/*
+ * Copyright(c) 2015, Analogix Semiconductor. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ */
+
+#ifndef __SLIMPORT_TX_REG_DEF_H
+#define __SLIMPORT_TX_REG_DEF_H
+
+#define TX_P0				0x70
+#define TX_P1				0x7A
+#define TX_P2				0x72
+
+#define RX_P0				0x7e
+#define RX_P1				0x80
+
+/***************************************************************/
+/*Register definition of device address 0x7e*/
+#define HDMI_RX_PORT_SEL_REG		0x10
+#define DDC_EN				0x10
+#define TMDS_EN				0x01
+
+#define RX_SRST				0x11
+#define VIDEO_RST			0x10
+#define HDCP_MAN_RST			0X04
+#define TMDS_RST			0X02
+#define SW_MAN_RST			0X01
+
+#define RX_SW_RST2			0x12
+#define DDC_RST				0x04
+
+#define HDMI_RX_SYS_STATUS_REG		0X14
+#define PWR5V				0X08
+#define TMDS_VSYNC_DET			0X04
+#define TMDS_CLOCK_DET			0X02
+#define TMDS_DE_DET			0X01
+
+#define HDMI_STATUS			0X15
+#define DEEP_COLOR_MODE			0X40
+#define HDMI_AUD_LAYOUT			0X08
+#define MUTE_STAT			0X04
+
+#define RX_MUTE_CTRL			0X16
+#define MUTE_POL			0X04
+#define AUD_MUTE			0X02
+#define VID_MUTE			0X01
+
+#define HDMI_RX_SYS_CTRL1_REG		0X17
+
+#define RX_SYS_PWDN1			0X18
+#define PWDN_CTRL			0X01
+
+#define RX_AEC_CTRL			0X20
+#define AVC_OE				0x80
+#define AAC_OE				0X40
+#define AVC_EN				0X02
+#define AAC_EN				0X01
+
+#define RX_AEC_EN0			0X24
+#define AEC_EN07			0X80
+#define AEC_EN06			0X40
+#define AEC_EN05			0X20
+#define AEC_EN04			0X10
+#define AEC_EN03			0X08
+#define AEC_EN02			0X04
+#define AEC_EN01			0X02
+#define AEC_EN00			0X01
+
+#define RX_AEC_EN1			0X25
+#define AEC_EN15			0X80
+#define AEC_EN14			0X40
+#define AEC_EN13			0X20
+#define AEC_EN12			0X10
+#define AEC_EN11			0X08
+#define AEC_EN10			0X04
+#define AEC_EN09			0X02
+#define AEC_EN08			0X01
+
+#define RX_AEC_EN2			0X26
+#define AEC_EN23			0X80
+#define AEC_EN22			0X40
+#define AEC_EN21			0X20
+#define AEC_EN20			0X10
+#define AEC_EN19			0X08
+#define AEC_EN18			0X04
+#define AEC_EN17			0X02
+#define AEC_EN16			0X01
+
+
+#define HDMI_RX_INT_STATUS1_REG		0X31
+#define HDMI_DVI			0X80
+#define CKDT_CHANGE			0X40
+#define SCDT_CHANGE			0X20
+#define PCLK_CHANGE			0X10
+#define PLL_UNLOCK			0X08
+#define CABLE_UNPLUG			0X04
+#define SET_MUTE			0X02
+#define SW_INTR				0X01
+
+#define HDMI_RX_INT_STATUS2_REG		0X32
+#define AUTH_START			0X80
+#define AUTH_DONE			0X40
+#define HDCP_ERR			0X20
+#define ECC_ERR				0X10
+#define AUDIO_SAMPLE_CHANGE		0X01
+
+#define HDMI_RX_INT_STATUS3_REG		0X33
+#define AUD_MODE_CHANGE			0X01
+
+#define HDMI_RX_INT_STATUS4_REG		0X34
+#define VSYNC_DET			0X80
+#define SYNC_POL_CHANGE			0X40
+#define V_RES_CHANGE			0X20
+#define H_RES_CHANGE			0X10
+#define I_P_CHANGE			0X08
+#define DP_CHANGE			0X04
+#define COLOR_DEPTH_CHANGE		0X02
+#define COLOR_MODE_CHANGE		0X01
+
+#define HDMI_RX_INT_STATUS5_REG		0X35
+#define VFIFO_OVERFLOW			0X80
+#define VFIFO_UNDERFLOW			0X40
+#define CTS_N_ERR			0X08
+#define NO_AVI				0X02
+#define AUDIO_RCV			0X01
+
+#define HDMI_RX_INT_STATUS6_REG		0X36
+#define CTS_RCV				0X80
+#define NEW_UNR_PKT			0X40
+#define NEW_MPEG			0X20
+#define NEW_AUD				0X10
+#define NEW_SPD				0X08
+#define NEW_ACP				0X04
+#define NEW_AVI				0X02
+#define NEW_CP				0X01
+
+#define HDMI_RX_INT_STATUS7_REG		0X37
+#define NO_VSI				0X80
+#define HSYNC_DET			0X20
+#define NEW_VS				0X10
+#define NO_ACP				0X08
+#define REF_CLK_CHG			0X04
+#define CEC_RX_READY			0X02
+#define CEC_TX_DONE			0X01
+
+#define HDMI_RX_PKT_RX_INDU_INT_CTRL	0X3F
+#define NEW_VS_CTRL			0X80
+#define NEW_UNR				0X40
+#define NEW_MPEG			0X20
+#define NEW_AUD				0X10
+#define NEW_SPD				0X08
+#define NEW_ACP				0X04
+#define NEW_AVI				0X02
+
+
+#define HDMI_RX_INT_MASK1_REG		0X41
+#define HDMI_RX_INT_MASK2_REG		0X42
+#define HDMI_RX_INT_MASK3_REG		0X43
+#define HDMI_RX_INT_MASK4_REG		0X44
+#define HDMI_RX_INT_MASK5_REG		0X45
+#define HDMI_RX_INT_MASK6_REG		0X46
+#define HDMI_RX_INT_MASK7_REG		0X47
+
+#define HDMI_RX_TMDS_CTRL_REG1		0X50
+#define HDMI_RX_TMDS_CTRL_REG2		0X51
+#define HDMI_RX_TMDS_CTRL_REG4		0X53
+#define HDMI_RX_TMDS_CTRL_REG5		0X54
+#define HDMI_RX_TMDS_CTRL_REG6		0X55
+#define HDMI_RX_TMDS_CTRL_REG7		0X56
+#define TERM_PD				0x01
+
+#define HDMI_RX_TMDS_CTRL_REG18		0X61
+#define PLL_RESET			0x10
+
+#define HDMI_RX_TMDS_CTRL_REG19		0X62
+#define HDMI_RX_TMDS_CTRL_REG20		0X63
+#define HDMI_RX_TMDS_CTRL_REG21		0X64
+#define HDMI_RX_TMDS_CTRL_REG22		0X65
+
+
+#define HDMI_RX_VIDEO_STATUS_REG1	0x70
+#define COLOR_DEPTH			0xF0
+#define DEFAULT_PHASE			0X08
+#define VIDEO_TYPE			0X04
+
+
+#define HDMI_RX_HTOTAL_LOW		0X71
+#define HDMI_RX_HTOTAL_HIGH		0X72
+#define HDMI_RX_VTOTAL_LOW		0X73
+#define HDMI_RX_VTOTAL_HIGH		0X74
+
+#define HDMI_RX_HACT_LOW		0X75
+#define HDMI_RX_HACT_HIGH		0X76
+#define HDMI_RX_VACT_LOW		0X77
+#define HDMI_RX_VACT_HIGH		0X78
+
+#define HDMI_RX_V_SYNC_WIDTH		0X79
+#define HDMI_RX_V_BACK_PORCH		0X7A
+#define HDMI_RX_H_FRONT_PORCH_LOW	0X7B
+#define HDMI_RX_H_FRONT_PORCH_HIGH	0X7C
+
+#define HDMI_RX_H_SYNC_WIDTH_LOW	0X7D
+#define HDMI_RX_H_SYNC_WIDTH_HIGH	0X7E
+
+#define RX_VID_DATA_RNG			0X83
+#define YC_LIMT				0X10
+#define OUTPUT_LIMIT_EN			0X08
+#define OUTPUT_LIMIT_RANGE		0X04
+#define R2Y_INPUT_LIMIT			0X02
+#define XVYCC_LIMIT			0X01
+
+#define HDMI_RX_VID_OUTPUT_CTRL3_REG	0X86
+
+#define HDMI_RX_VID_PCLK_CNTR_REG	0X8B
+
+#define HDMI_RX_AUD_IN_CH_STATUS1_REG	0xC7
+#define HDMI_RX_AUD_IN_CH_STATUS4_REG	0XCA
+
+#define RX_CEC_CTRL			0XD0
+#define CEC_RX_EN			0X08
+#define CEC_TX_ST			0X04
+#define CEC_PIN_SEL			0X02
+#define CEC_RST				0X01
+
+#define HDMI_RX_CEC_RX_STATUS_REG	0XD1
+#define HDMI_RX_CEC_RX_BUSY		0X80
+#define HDMI_RX_CEC_RX_FULL		0X20
+#define HDMI_RX_CEC_RX_EMP		0X10
+
+#define HDMI_RX_CEC_TX_STATUS_REG	0XD2
+#define HDMI_RX_CEC_TX_BUSY		0X80
+#define HDMI_RX_CEC_TX_FAIL		0X40
+#define HDMI_RX_CEC_TX_FULL		0X20
+#define HDMI_RX_CEC_TX_EMP		0X10
+
+
+#define HDMI_RX_CEC_FIFO_REG		0XD3
+
+#define RX_CEC_SPEED			0XD4
+#define CEC_SPEED_27M			0x40
+
+#define HDMI_RX_HDMI_CRITERIA_REG	0XE1
+
+#define HDMI_RX_HDCP_EN_CRITERIA_REG	0XE2
+#define ENC_EN_MODE			0X20
+
+#define RX_CHIP_CTRL			0XE3
+#define MAN_HDMI5V_DET			0X08
+#define PLLLOCK_CKDT_EN			0X04
+#define ANALOG_CKDT_EN			0X02
+#define DIGITAL_CKDT_EN			0X01
+
+#define RX_PACKET_REV_STA		0XF3
+#define AVI_RCVD			0X40
+#define VSI_RCVD			0X20
+/***************************************************************/
+/*Register definition of device address 0x80*/
+
+
+#define HDMI_RX_HDCP_STATUS_REG		0X3F
+#define ADV_CIPHER			0X80
+#define LOAD_KEY_DONE			0X40
+#define DECRYPT_EN			0X20
+#define AUTH_EN				0X10
+#define BKSV_DISABLE			0X02
+#define CLEAR_RI			0X01
+
+#define HDMI_RX_SPD_TYPE_REG		0X40
+#define HDMI_RX_SPD_VER_REG		0X41
+#define HDMI_RX_SPD_LEN_REG		0X42
+#define HDMI_RX_SPD_CHKSUM_REG		0X43
+#define HDMI_RX_SPD_DATA00_REG		0X44
+
+#define HDMI_RX_ACP_HB0_REG		0X60
+#define HDMI_RX_ACP_HB1_REG		0X61
+#define HDMI_RX_ACP_HB2_REG		0X62
+#define HDMI_RX_ACP_DATA00_REG		0X63
+
+#define HDMI_RX_AVI_TYPE_REG		0XA0
+#define HDMI_RX_AVI_VER_REG		0XA1
+#define HDMI_RX_AVI_LEN_REG		0XA2
+#define HDMI_RX_AVI_CHKSUM_REG		0XA3
+#define HDMI_RX_AVI_DATA00_REG		0XA4
+
+#define HDMI_RX_AUDIO_TYPE_REG		0XC0
+#define HDMI_RX_AUDIO_VER_REG		0XC1
+#define HDMI_RX_AUDIO_LEN_REG		0XC2
+#define HDMI_RX_AUDIO_CHKSUM_REG	0XC3
+#define HDMI_RX_AUDIO_DATA00_REG	0XC4
+
+#define HDMI_RX_MPEG_TYPE_REG		0XE0
+#define HDMI_RX_MPEG_VER_REG		0XE1
+#define HDMI_RX_MPEG_LEN_REG		0XE2
+#define HDMI_RX_MPEG_CHKSUM_REG		0XE3
+#define HDMI_RX_MPEG_DATA00_REG		0XE4
+#define HDMI_RX_MPEG_DATA03_REG		0XE7
+#define HDMI_RX_MPEG_DATA05_REG		0XE9
+
+#define HDMI_RX_SPD_INFO_CTRL		0X5F
+#define HDMI_RX_ACP_INFO_CTRL		0X7F
+
+#define HDMI_RX_GENERAL_CTRL		0X9F
+#define CLEAR_AVMUTE			0x10
+#define SET_AVMUTE			0x01
+
+#define HDMI_RX_MPEG_VS_CTRL		0XDF
+#define HDMI_RX_MPEG_VS_INFO_CTRL	0XFF
+
+
+/***************************************************************/
+/*Register definition of device address 0x70*/
+#define SP_TX_HDCP_STATUS		0x00
+#define SP_TX_HDCP_AUTH_PASS		0x02
+
+#define TX_HDCP_CTRL0			0x01
+#define STORE_AN			0x80
+#define RX_REPEATER			0x40
+#define RE_AUTH				0x20
+#define SW_AUTH_OK			0x10
+#define HARD_AUTH_EN			0x08
+#define ENC_EN				0x04
+#define BKSV_SRM_PASS			0x02
+#define KSVLIST_VLD			0x01
+
+#define SP_TX_HDCP_CTRL1_REG		0x02
+#define AINFO_EN			0x04
+#define RCV_11_EN			0x02
+#define HDCP_11_EN			0x01
+
+#define SP_TX_HDCP_LINK_CHK_FRAME_NUM	0x03
+#define SP_TX_HDCP_CTRL2_REG		0x04
+
+
+#define SP_TX_VID_BLANK_SET1		0X2C
+#define SP_TX_VID_BLANK_SET2		0X2D
+#define SP_TX_VID_BLANK_SET3		0X2E
+
+#define SP_TX_WAIT_R0_TIME		0x40
+#define SP_TX_LINK_CHK_TIMER		0x41
+#define SP_TX_WAIT_KSVR_TIME		0X42
+
+#define HDCP_KEY_STATUS			0x5E
+
+
+#define M_VID_0				0xC0
+#define M_VID_1				0xC1
+#define M_VID_2				0xC2
+#define N_VID_0				0xC3
+#define N_VID_1				0xC4
+#define N_VID_2				0xC5
+#define HDCP_AUTO_TIMER			0x51
+#define HDCP_AUTO_TIMER_VAL		0x00
+
+#define HDCP_KEY_CMD			0x5F
+#define DISABLE_SYNC_HDCP		0x04
+
+#define OTP_KEY_PROTECT1		0x60
+#define OTP_KEY_PROTECT2		0x61
+#define OTP_KEY_PROTECT3		0x62
+#define OTP_PSW1			0xa2
+#define OTP_PSW2			0x7e
+#define OTP_PSW3			0xc6
+
+
+#define SP_TX_SYS_CTRL1_REG		0x80
+#define CHIP_AUTH_RESET			0x80
+#define PD_BYPASS_CHIP_AUTH		0x40
+#define DET_STA				0x04
+#define FORCE_DET			0x02
+#define DET_CTRL			0x01
+
+#define SP_TX_SYS_CTRL2_REG		0x81
+#define CHA_STA				0x04
+#define FORCE_CHA			0x02
+#define CHA_CTRL			0x01
+
+#define SP_TX_SYS_CTRL3_REG		0x82
+#define HPD_STATUS			0x40
+#define F_HPD				0x20
+#define HPD_CTRL			0x10
+#define STRM_VALID			0x04
+#define F_VALID				0x02
+#define VALID_CTRL			0x01
+
+#define SP_TX_SYS_CTRL4_REG		0x83
+#define ENHANCED_MODE			0x08
+
+#define SP_TX_VID_CTRL			0x84
+
+#define SP_TX_AUD_CTRL			0x87
+#define AUD_EN				0x01
+
+#define  I2C_GEN_10US_TIMER0		0x88
+#define  I2C_GEN_10US_TIMER1		0x89
+
+#define SP_TX_PKT_EN_REG		0x90
+#define AUD_IF_UP			0x80
+#define AVI_IF_UD			0x40
+#define MPEG_IF_UD			0x20
+#define SPD_IF_UD			0x10
+#define AUD_IF_EN			0x08
+#define AVI_IF_EN			0x04
+#define MPEG_IF_EN			0x02
+#define SPD_IF_EN			0x01
+
+#define TX_HDCP_CTRL			0x92
+#define AUTO_EN				0x80
+#define AUTO_START			0x20
+#define LINK_POLLING			0x02
+
+#define SP_TX_LINK_BW_SET_REG		0xA0
+#define LINK_6P75G			0x19
+#define LINK_5P4G			0x14
+#define LINK_2P7G			0x0A
+#define LINK_1P62G			0x06
+
+#define SP_TX_TRAINING_PTN_SET_REG	0xA2
+#define SCRAMBLE_DISABLE		0x20
+
+#define SP_TX_LT_SET_REG		0xA3
+#define MAX_PRE_REACH			0x20
+#define MAX_DRIVE_REACH			0x04
+#define DRVIE_CURRENT_LEVEL1		0x01
+#define PRE_EMP_LEVEL1			0x08
+
+
+#define LT_CTRL				0xA8
+#define SP_TX_LT_EN			0x01
+
+#define TX_DEBUG1			0xB0
+#define FORCE_HPD			0X80
+#define HPD_POLLING_DET			0x40
+#define HPD_POLLING_EN			0x20
+#define DEBUG_PLL_LOCK			0x10
+#define FORCE_PLL_LOCK			0X08
+#define POLLING_EN			0x02
+
+#define SP_TX_DP_POLLING_PERIOD		0xB3
+
+#define TX_DP_POLLING			0xB4
+#define AUTO_POLLING_DISABLE		0x01
+
+#define TX_LINK_DEBUG			0xB8
+#define M_VID_DEBUG			0x20
+#define NEW_PRBS7			0x10
+#define INSERT_ER			0x02
+#define PRBS31_EN			0x01
+
+#define DPCD_200			0xB9
+#define DPCD_201			0xBA
+#define DPCD_202			0xBB
+#define DPCD_203			0xBC
+#define DPCD_204			0xBD
+#define DPCD_205			0xBE
+
+#define SP_TX_PLL_CTRL_REG		0xC7
+#define PLL_RST				0x40
+
+#define SP_TX_ANALOG_PD_REG		0xC8
+#define MACRO_PD			0x20
+#define AUX_PD				0x10
+#define CH0_PD				0x01
+
+#define TX_MISC				0xCD
+#define EQ_TRAINING_LOOP		0x40
+
+
+#define SP_TX_DOWN_SPREADING_CTRL1	0xD0
+#define SP_TX_SSC_DISABLE		0xC0
+#define SP_TX_SSC_DWSPREAD		0x40
+
+
+#define SP_TX_M_CALCU_CTRL		0xD9
+#define M_GEN_CLK_SEL			0x01
+
+#define TX_EXTRA_ADDR			0xCE
+#define I2C_STRETCH_DISABLE		0X80
+#define I2C_EXTRA_ADDR			0X50
+
+#define SP_TX_AUX_STATUS		0xE0
+#define AUX_BUSY			0x10
+
+#define AUX_DEFER_CTRL			0xE2
+#define BUF_DATA_COUNT			0xE4
+
+#define AUX_CTRL			0xE5
+#define AUX_ADDR_7_0			0xE6
+#define AUX_ADDR_15_8			0xE7
+#define AUX_ADDR_19_16			0xE8
+
+#define AUX_CTRL2			0xE9
+#define ADDR_ONLY_BIT			0x02
+#define AUX_OP_EN			0x01
+
+#define SP_TX_3D_VSC_CTRL		0xEA
+#define INFO_FRAME_VSC_EN		0x01
+
+#define SP_TX_VSC_DB1			0xEB
+
+#define BUF_DATA_0			0xF0
+
+
+/***************************************************************/
+/*Register definition of device address 0x72*/
+#define SP_TX_VND_IDL_REG		0x00
+#define SP_TX_VND_IDH_REG		0x01
+#define SP_TX_DEV_IDL_REG		0x02
+#define SP_TX_DEV_IDH_REG		0x03
+#define SP_TX_DEV_REV_REG		0x04
+
+#define SP_POWERD_CTRL_REG		0x05
+#define REGISTER_PD			0x80
+#define HDCP_PD				0x20
+#define AUDIO_PD			0x10
+#define VIDEO_PD			0x08
+#define LINK_PD				0x04
+#define TOTAL_PD			0x02
+
+#define SP_TX_RST_CTRL_REG		0x06
+#define MISC_RST			0x80
+#define VIDCAP_RST			0x40
+#define VIDFIF_RST			0x20
+#define AUDFIF_RST			0x10
+#define AUDCAP_RST			0x08
+#define HDCP_RST			0x04
+#define SW_RST				0x02
+#define HW_RST				0x01
+
+#define RST_CTRL2			0x07
+#define AUX_RST				0x04
+#define SERDES_FIFO_RST			0x02
+#define I2C_REG_RST			0x01
+
+#define VID_CTRL1			0x08
+#define VIDEO_EN			0x80
+#define VIDEO_MUTE			0x40
+#define IN_BIT_SEl			0x04
+#define DDR_CTRL			0x02
+#define EDGE_CTRL			0x01
+
+#define SP_TX_VID_CTRL2_REG		0x09
+#define IN_BPC_12BIT			0x30
+#define IN_BPC_10BIT			0x20
+#define IN_BPC_8BIT			0x10
+
+#define SP_TX_VID_CTRL3_REG		0x0A
+#define HPD_OUT				0x40
+
+#define SP_TX_VID_CTRL5_REG		0x0C
+#define CSC_STD_SEL			0x80
+#define RANGE_Y2R			0x20
+#define CSPACE_Y2R			0x10
+
+#define SP_TX_VID_CTRL6_REG		0x0D
+#define VIDEO_PROCESS_EN		0x40
+#define UP_SAMPLE			0x02
+#define DOWN_SAMPLE			0x01
+
+#define SP_TX_VID_CTRL8_REG		0x0F
+#define VID_VRES_TH			0x01
+
+#define SP_TX_TOTAL_LINE_STA_L		0x24
+#define SP_TX_TOTAL_LINE_STA_H		0x25
+#define SP_TX_ACT_LINE_STA_L		0x26
+#define SP_TX_ACT_LINE_STA_H		0x27
+#define SP_TX_V_F_PORCH_STA		0x28
+#define SP_TX_V_SYNC_STA		0x29
+#define SP_TX_V_B_PORCH_STA		0x2A
+#define SP_TX_TOTAL_PIXEL_STA_L		0x2B
+#define SP_TX_TOTAL_PIXEL_STA_H		0x2C
+#define SP_TX_ACT_PIXEL_STA_L		0x2D
+#define SP_TX_ACT_PIXEL_STA_H		0x2E
+#define SP_TX_H_F_PORCH_STA_L		0x2F
+#define SP_TX_H_F_PORCH_STA_H		0x30
+#define SP_TX_H_SYNC_STA_L		0x31
+#define SP_TX_H_SYNC_STA_H		0x32
+#define SP_TX_H_B_PORCH_STA_L		0x33
+#define SP_TX_H_B_PORCH_STA_H		0x34
+
+#define SP_TX_DP_ADDR_REG1		0x3E
+
+#define SP_TX_VID_BIT_CTRL0_REG		0x40
+#define SP_TX_VID_BIT_CTRL10_REG	0x4a
+#define SP_TX_VID_BIT_CTRL20_REG	0x54
+
+#define SP_TX_AVI_TYPE			0x70
+#define SP_TX_AVI_VER			0x71
+#define SP_TX_AVI_LEN			0x72
+#define SP_TX_AVI_DB0			0x73
+
+#define BIT_CTRL_SPECIFIC		0x80
+#define ENABLE_BIT_CTRL			0x01
+
+#define SP_TX_AUD_TYPE			0x83
+#define SP_TX_AUD_VER			0x84
+#define SP_TX_AUD_LEN			0x85
+#define SP_TX_AUD_DB0			0x86
+
+#define SP_TX_SPD_TYPE			0x91
+#define SP_TX_SPD_VER			0x92
+#define SP_TX_SPD_LEN			0x93
+#define SP_TX_SPD_DB0			0x94
+
+#define SP_TX_MPEG_TYPE			0xB0
+#define SP_TX_MPEG_VER			0xB1
+#define SP_TX_MPEG_LEN			0xB2
+#define SP_TX_MPEG_DB0			0xB3
+
+#define SP_TX_AUD_CH_STATUS_REG1	0xD0
+
+#define SP_TX_AUD_CH_NUM_REG5		0xD5
+#define CH_NUM_8			0xE0
+#define AUD_LAYOUT			0x01
+
+#define GPIO_1_CONTROL			0xD6
+#define GPIO_1_PULL_UP			0x04
+#define GPIO_1_OEN			0x02
+#define GPIO_1_DATA			0x01
+
+#define TX_ANALOG_DEBUG2		0xDD
+#define POWERON_TIME_1P5MS		0X03
+
+#define TX_PLL_FILTER			0xDF
+#define PD_RING_OSC			0x40
+#define V33_SWITCH_ON			0x08
+
+#define TX_PLL_FILTER5			0xE0
+#define SP_TX_ANALOG_CTRL0		0xE1
+#define P5V_PROTECT			0X80
+#define SHORT_PROTECT			0X40
+#define P5V_PROTECT_PD			0X20
+#define SHORT_PROTECT_PD		0X10
+
+#define TX_ANALOG_CTRL			0xE5
+#define SHORT_DPDM			0X4
+
+#define SP_COMMON_INT_STATUS1		0xF1
+#define PLL_LOCK_CHG			0x40
+#define VIDEO_FORMAT_CHG		0x08
+#define AUDIO_CLK_CHG			0x04
+#define VIDEO_CLOCK_CHG			0x02
+
+#define SP_COMMON_INT_STATUS2		0xF2
+#define HDCP_AUTH_CHG			0x02
+#define HDCP_AUTH_DONE			0x01
+
+#define SP_COMMON_INT_STATUS3		0xF3
+#define HDCP_LINK_CHECK_FAIL		0x01
+
+#define SP_COMMON_INT_STATUS4		0xF4
+#define PLUG				0x01
+#define ESYNC_ERR			0x10
+#define HPD_LOST			0x02
+#define HPD_CHANGE			0x04
+#define HPD_IRQ				0x40
+
+#define SP_TX_INT_STATUS1		0xF7
+#define DPCD_IRQ_REQUEST		0x80
+#define HPD				0x40
+#define TRAINING_Finish			0x20
+#define POLLING_ERR			0x10
+#define LINK_CHANGE			0x04
+#define SINK_CHG			0x08
+
+#define SP_COMMON_INT_MASK1		0xF8
+#define SP_COMMON_INT_MASK2		0xF9
+#define SP_COMMON_INT_MASK3		0xFA
+#define SP_COMMON_INT_MASK4		0xFB
+#define SP_INT_MASK			0xFE
+#define SP_TX_INT_CTRL_REG		0xFF
+
+
+/***************************************************************/
+/*Register definition of device address 0x7a*/
+
+#define SP_TX_LT_CTRL_REG0		0x30
+#define SP_TX_LT_CTRL_REG1		0x31
+#define SP_TX_LT_CTRL_REG2		0x34
+#define SP_TX_LT_CTRL_REG3		0x35
+#define SP_TX_LT_CTRL_REG4		0x36
+#define SP_TX_LT_CTRL_REG5		0x37
+#define SP_TX_LT_CTRL_REG6		0x38
+#define SP_TX_LT_CTRL_REG7		0x39
+#define SP_TX_LT_CTRL_REG8		0x3A
+#define SP_TX_LT_CTRL_REG9		0x3B
+#define SP_TX_LT_CTRL_REG10		0x40
+#define SP_TX_LT_CTRL_REG11		0x41
+#define SP_TX_LT_CTRL_REG12		0x44
+#define SP_TX_LT_CTRL_REG13		0x45
+#define SP_TX_LT_CTRL_REG14		0x46
+#define SP_TX_LT_CTRL_REG15		0x47
+#define SP_TX_LT_CTRL_REG16		0x48
+#define SP_TX_LT_CTRL_REG17		0x49
+#define SP_TX_LT_CTRL_REG18		0x4A
+#define SP_TX_LT_CTRL_REG19		0x4B
+
+#define SP_TX_AUD_INTERFACE_CTRL0	0x5f
+#define AUD_INTERFACE_DISABLE		0x80
+
+#define SP_TX_AUD_INTERFACE_CTRL2	0x60
+#define M_AUD_ADJUST_ST			0x04
+
+#define SP_TX_AUD_INTERFACE_CTRL3	0x62
+#define SP_TX_AUD_INTERFACE_CTRL4	0x67
+#define SP_TX_AUD_INTERFACE_CTRL5	0x68
+#define SP_TX_AUD_INTERFACE_CTRL6	0x69
+
+#define OCM_REG3			0x96
+#define OCM_RST				0x80
+
+#define FW_VER_REG			0xB7
+
+
+/***************************************************************/
+/*Definition of DPCD*/
+
+
+#define DOWN_R_TERM_DET _BIT6
+#define SRAM_EEPROM_LOAD_DONE _BIT5
+#define SRAM_CRC_CHK_DONE _BIT4
+#define SRAM_CRC_CHK_PASS _BIT3
+#define DOWN_STRM_ENC _BIT2
+#define DOWN_STRM_AUTH _BIT1
+#define DOWN_STRM_HPD _BIT0
+
+
+#define DPCD_DPCD_REV			0x00
+#define DPCD_MAX_LINK_RATE		0x01
+
+#define DPCD_MAX_LANE_COUNT		0x02
+#define ENHANCED_FRAME_CAP		0x80
+
+#define DPCD_MAX_DOWNSPREAD		0x03
+#define DPCD_NORP			0x04
+#define DPCD_DSPORT_PRESENT		0x05
+
+#define DPCD_LINK_BW_SET		0x00
+#define DPCD_LANE_COUNT_SET		0x01
+#define ENHANCED_FRAME_EN		0x80
+
+#define DPCD_TRAINING_PATTERN_SET	0x02
+#define DPCD_TRAINNIG_LANE0_SET		0x03
+
+#define DPCD_DOWNSPREAD_CTRL		0x07
+#define SPREAD_AMPLITUDE		0X10
+
+#define DPCD_SINK_COUNT			0x00
+#define DPCD_SERVICE_IRQ_VECTOR		0x01
+#define TEST_IRQ			0x02
+#define CP_IRQ				0x04
+#define SINK_SPECIFIC_IRQ		0x40
+
+#define DPCD_LANE0_1_STATUS		0x02
+
+#define DPCD_LANE_ALIGN_UD		0x04
+#define DPCD_SINK_STATUS		0x05
+
+#define DPCD_TEST_RESPONSE		0x60
+#define TEST_ACK			0x01
+#define DPCD_TEST_EDID_CHECKSUM_WRITE	0x04
+
+#define DPCD_TEST_EDID_CHECKSUM		0x61
+
+
+#define DPCD_SPECIFIC_INTERRUPT1	0x10
+#define DPCD_USER_COMM1			0x22
+
+#define DPCD_SPECIFIC_INTERRUPT2	0x11
+
+#define DPCD_TEST_REQUEST		0x18
+#define DPCD_TEST_LINK_RATE		0x19
+
+#define DPCD_TEST_LANE_COUNT		0x20
+
+#define DPCD_PHY_TEST_PATTERN		0x48
+
+#endif
+
-- 
2.1.0

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Re: [PATCHv3 3/3] drm: bridge: anx78xx: Add anx78xx driver support by analogix.

[Nicolas Boichat]

Hi Enric,

Partial review for now, thanks for you work.

Best,

On Thu, Sep 10, 2015 at 06:35:52PM +0200, Enric Balletbo i Serra wrote:
> At the moment it only supports ANX7814.
> 
> The ANX7814 is an ultra-low power Full-HD (1080p60) SlimPort transmitter
> designed for portable devices.
> 
> This driver adds initial support and supports HDMI to DP pass-through mode.
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
> ---

Please include a revision log here, stating what you changed between each
version.

>  drivers/gpu/drm/bridge/Kconfig                   |    2 +
>  drivers/gpu/drm/bridge/Makefile                  |    1 +
>  drivers/gpu/drm/bridge/anx78xx/Kconfig           |    7 +
>  drivers/gpu/drm/bridge/anx78xx/Makefile          |    4 +
>  drivers/gpu/drm/bridge/anx78xx/anx78xx.h         |   44 +
>  drivers/gpu/drm/bridge/anx78xx/anx78xx_main.c    |  241 ++
>  drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c | 3198 ++++++++++++++++++++++
>  drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.h |  215 ++
>  drivers/gpu/drm/bridge/anx78xx/slimport_tx_reg.h |  786 ++++++
>  9 files changed, 4498 insertions(+)
>  create mode 100644 drivers/gpu/drm/bridge/anx78xx/Kconfig
>  create mode 100644 drivers/gpu/drm/bridge/anx78xx/Makefile
>  create mode 100644 drivers/gpu/drm/bridge/anx78xx/anx78xx.h
>  create mode 100644 drivers/gpu/drm/bridge/anx78xx/anx78xx_main.c
>  create mode 100644 drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c
>  create mode 100644 drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.h
>  create mode 100644 drivers/gpu/drm/bridge/anx78xx/slimport_tx_reg.h
> 
> diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
> index 2de52a5..aa6fe12 100644
> --- a/drivers/gpu/drm/bridge/Kconfig
> +++ b/drivers/gpu/drm/bridge/Kconfig
> @@ -29,4 +29,6 @@ config DRM_PARADE_PS8622
>  	---help---
>  	  Parade eDP-LVDS bridge chip driver.
>  
> +source "drivers/gpu/drm/bridge/anx78xx/Kconfig"
> +
>  endmenu
> diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
> index e2eef1c..e5bd38b 100644
> --- a/drivers/gpu/drm/bridge/Makefile
> +++ b/drivers/gpu/drm/bridge/Makefile
> @@ -3,3 +3,4 @@ ccflags-y := -Iinclude/drm
>  obj-$(CONFIG_DRM_DW_HDMI) += dw_hdmi.o
>  obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o
>  obj-$(CONFIG_DRM_PARADE_PS8622) += parade-ps8622.o
> +obj-$(CONFIG_DRM_ANX78XX) += anx78xx/
> diff --git a/drivers/gpu/drm/bridge/anx78xx/Kconfig b/drivers/gpu/drm/bridge/anx78xx/Kconfig
> new file mode 100644
> index 0000000..08f9c08
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/anx78xx/Kconfig
> @@ -0,0 +1,7 @@
> +config DRM_ANX78XX
> +	tristate "Analogix ANX78XX bridge"
> +	help
> +        	ANX78XX is a HD video transmitter chip over micro-USB
> +		connector for smartphone device.
> +
> +
> diff --git a/drivers/gpu/drm/bridge/anx78xx/Makefile b/drivers/gpu/drm/bridge/anx78xx/Makefile
> new file mode 100644
> index 0000000..a843733
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/anx78xx/Makefile
> @@ -0,0 +1,4 @@
> +obj-${CONFIG_DRM_ANX78XX} :=  anx78xx.o
> +
> +anx78xx-y += anx78xx_main.o
> +anx78xx-y += slimport_tx_drv.o
> diff --git a/drivers/gpu/drm/bridge/anx78xx/anx78xx.h b/drivers/gpu/drm/bridge/anx78xx/anx78xx.h
> new file mode 100644
> index 0000000..4f6dd1d
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/anx78xx/anx78xx.h
> @@ -0,0 +1,44 @@
> +/*
> + * Copyright(c) 2015, Analogix Semiconductor. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * 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.
> + *
> + */
> +
> +#ifndef __ANX78xx_H
> +#define __ANX78xx_H
> +
> +#include <linux/i2c.h>
> +#include <linux/mutex.h>
> +#include <linux/slab.h>
> +#include <linux/workqueue.h>
> +#include <linux/gpio/consumer.h>
> +
> +#define AUX_ERR  1
> +#define AUX_OK   0
> +
> +struct anx78xx_platform_data {
> +	struct gpio_desc *gpiod_pd;
> +	struct gpio_desc *gpiod_reset;
> +	spinlock_t lock;
> +};
> +
> +struct anx78xx {
> +	struct i2c_client *client;
> +	struct anx78xx_platform_data *pdata;
> +	struct delayed_work work;
> +	struct workqueue_struct *workqueue;
> +	struct mutex lock;
> +};
> +
> +void anx78xx_poweron(struct anx78xx *data);
> +void anx78xx_poweroff(struct anx78xx *data);
> +
> +#endif
> diff --git a/drivers/gpu/drm/bridge/anx78xx/anx78xx_main.c b/drivers/gpu/drm/bridge/anx78xx/anx78xx_main.c
> new file mode 100644
> index 0000000..b92d2bc
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/anx78xx/anx78xx_main.c
> @@ -0,0 +1,241 @@
> +/*
> + * Copyright(c) 2015, Analogix Semiconductor. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * 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.
> + *
> + */
> +#include <linux/delay.h>
> +#include <linux/interrupt.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/types.h>
> +#include <linux/err.h>
> +#include <linux/async.h>
> +#include <linux/of_gpio.h>
> +#include <linux/of_platform.h>
> +#include <linux/delay.h>
> +
> +#include "anx78xx.h"
> +#include "slimport_tx_drv.h"
> +
> +void anx78xx_poweron(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	struct anx78xx_platform_data *pdata = anx78xx->pdata;
> +
> +	gpiod_set_value_cansleep(pdata->gpiod_reset, 0);
> +	usleep_range(1000, 2000);
> +
> +	gpiod_set_value_cansleep(pdata->gpiod_pd, 0);
> +	usleep_range(1000, 2000);
> +
> +	gpiod_set_value_cansleep(pdata->gpiod_reset, 1);
> +
> +	dev_dbg(dev, "power on\n");
> +}
> +
> +void anx78xx_poweroff(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	struct anx78xx_platform_data *pdata = anx78xx->pdata;
> +
> +	gpiod_set_value_cansleep(pdata->gpiod_reset, 0);
> +	usleep_range(1000, 2000);
> +
> +	gpiod_set_value_cansleep(pdata->gpiod_pd, 1);
> +	usleep_range(1000, 2000);
> +
> +	dev_dbg(dev, "power down\n");

nit: off?

> +}
> +
> +static int anx78xx_init_gpio(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	struct anx78xx_platform_data *pdata = anx78xx->pdata;
> +	int ret;
> +
> +	/* gpio for chip power down */
> +	pdata->gpiod_pd = devm_gpiod_get(dev, "pd", GPIOD_OUT_HIGH);
> +	if (IS_ERR(pdata->gpiod_pd)) {
> +		dev_err(dev, "unable to claim pd gpio\n");
> +		ret = PTR_ERR(pdata->gpiod_pd);
> +		return ret;

No need for the variable ret, just return PTR_ERR. Same below.

> +	}
> +
> +	/* gpio for chip reset */
> +	pdata->gpiod_reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
> +	if (IS_ERR(pdata->gpiod_reset)) {
> +		dev_err(dev, "unable to claim reset gpio\n");
> +		ret = PTR_ERR(pdata->gpiod_reset);
> +		return ret;
> +	}
> +
> +	return 0;
> +}
> +
> +static int anx78xx_system_init(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	int ret;
> +
> +	ret = sp_chip_detect(anx78xx);
> +	if (ret == 0) {

if (!sp_chip_detect(...)) {

> +		anx78xx_poweroff(anx78xx);
> +		dev_err(dev, "failed to detect anx78xx\n");
> +		return -ENODEV;
> +	}
> +
> +	sp_tx_variable_init();
> +	return 0;
> +}
> +
> +static void anx78xx_work_func(struct work_struct *work)
> +{
> +	struct anx78xx *anx78xx = container_of(work, struct anx78xx,
> +					       work.work);
> +	int workqueu_timer = 0;
> +
> +	if (sp_tx_cur_states() >= STATE_PLAY_BACK)
> +		workqueu_timer = 500;

workqueue

> +	else
> +		workqueu_timer = 100;
> +	mutex_lock(&anx78xx->lock);
> +	sp_main_process(anx78xx);
> +	mutex_unlock(&anx78xx->lock);
> +	queue_delayed_work(anx78xx->workqueue, &anx78xx->work,
> +			   msecs_to_jiffies(workqueu_timer));
> +}
> +
> +static int anx78xx_i2c_probe(struct i2c_client *client,
> +			     const struct i2c_device_id *id)
> +{
> +	struct anx78xx *anx78xx;
> +	int ret;
> +
> +	if (!i2c_check_functionality(client->adapter,
> +		I2C_FUNC_SMBUS_I2C_BLOCK)) {
> +		dev_err(&client->dev, "i2c bus does not support the device\n");
> +		return -ENODEV;
> +	}
> +
> +	anx78xx = devm_kzalloc(&client->dev,
> +			sizeof(struct anx78xx),
> +			GFP_KERNEL);
> +	if (!anx78xx)
> +		return -ENOMEM;
> +
> +	anx78xx->pdata = devm_kzalloc(&client->dev,
> +			sizeof(struct anx78xx_platform_data),
> +			GFP_KERNEL);
> +	if (!anx78xx->pdata)
> +		return -ENOMEM;
> +
> +	anx78xx->client = client;
> +
> +	i2c_set_clientdata(client, anx78xx);
> +
> +	mutex_init(&anx78xx->lock);
> +
> +	ret = anx78xx_init_gpio(anx78xx);
> +	if (ret) {
> +		dev_err(&client->dev, "failed to initialize gpios\n");
> +		return ret;
> +	}
> +
> +	INIT_DELAYED_WORK(&anx78xx->work, anx78xx_work_func);
> +
> +	anx78xx->workqueue = create_singlethread_workqueue("anx78xx_work");
> +	if (anx78xx->workqueue == NULL) {
> +		dev_err(&client->dev, "failed to create work queue\n");
> +		return -ENOMEM;
> +	}
> +
> +	ret = anx78xx_system_init(anx78xx);
> +	if (ret) {
> +		dev_err(&client->dev, "failed to initialize anx78xx\n");
> +		goto cleanup;
> +	}
> +
> +	/* enable driver */
> +	queue_delayed_work(anx78xx->workqueue, &anx78xx->work, 0);
> +
> +	return 0;
> +
> +cleanup:
> +	destroy_workqueue(anx78xx->workqueue);
> +	return ret;
> +}
> +
> +static int anx78xx_i2c_remove(struct i2c_client *client)
> +{
> +	struct anx78xx *anx78xx = i2c_get_clientdata(client);
> +
> +	destroy_workqueue(anx78xx->workqueue);
> +
> +	return 0;
> +}
> +
> +static int anx78xx_i2c_suspend(struct device *dev)
> +{
> +	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
> +	struct anx78xx *anx78xx = i2c_get_clientdata(client);
> +
> +	cancel_delayed_work_sync(&anx78xx->work);
> +	flush_workqueue(anx78xx->workqueue);
> +	anx78xx_poweroff(anx78xx);
> +	sp_tx_clean_state_machine();
> +
> +	return 0;
> +}
> +
> +static int anx78xx_i2c_resume(struct device *dev)
> +{
> +	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
> +	struct anx78xx *anx78xx = i2c_get_clientdata(client);
> +
> +	queue_delayed_work(anx78xx->workqueue, &anx78xx->work, 0);
> +
> +	return 0;
> +}
> +
> +static SIMPLE_DEV_PM_OPS(anx78xx_i2c_pm_ops,
> +			anx78xx_i2c_suspend, anx78xx_i2c_resume);
> +
> +static const struct i2c_device_id anx78xx_id[] = {
> +	{"anx7814", 0},
> +	{ /* sentinel */ }
> +};
> +
> +MODULE_DEVICE_TABLE(i2c, anx78xx_id);
> +
> +static const struct of_device_id anx78xx_match_table[] = {
> +	{.compatible = "analogix,anx7814",},
> +	{ /* sentinel */ },
> +};
> +
> +MODULE_DEVICE_TABLE(of, anx78xx_match_table);
> +
> +static struct i2c_driver anx78xx_driver = {
> +	.driver = {
> +		   .name = "anx7814",
> +		   .pm = &anx78xx_i2c_pm_ops,
> +		   .of_match_table = of_match_ptr(anx78xx_match_table),
> +		   },
> +	.probe = anx78xx_i2c_probe,
> +	.remove = anx78xx_i2c_remove,
> +	.id_table = anx78xx_id,
> +};
> +
> +module_i2c_driver(anx78xx_driver);
> +
> +MODULE_DESCRIPTION("Slimport transmitter ANX78XX driver");
> +MODULE_AUTHOR("Junhua Xia <jxia-RZiUC8FWO7+l5r2w9Jh5Rg@public.gmane.org>");
> +MODULE_LICENSE("GPL v2");
> +MODULE_VERSION("1.1");
> diff --git a/drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c b/drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c
> new file mode 100644
> index 0000000..1be7f69
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c
> @@ -0,0 +1,3198 @@
> +/*
> + * Copyright(c) 2015, Analogix Semiconductor. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * 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.
> + *
> + */
> +#include <linux/delay.h>
> +#include <linux/types.h>
> +
> +#include "anx78xx.h"
> +#include "slimport_tx_drv.h"
> +
> +#define XTAL_CLK_M10	pxtal_data[XTAL_27M].xtal_clk_m10
> +#define XTAL_CLK	pxtal_data[XTAL_27M].xtal_clk
> +
> +struct slimport {
> +	int	block_en;	/* HDCP control enable/ disable from AP */
> +
> +	u8	tx_test_bw;
> +	bool	tx_test_lt;
> +	bool	tx_test_edid;
> +
> +	u8	changed_bandwidth;
> +
> +	u8	hdmi_dvi_status;
> +	u8	need_clean_status;
> +
> +	u8	ds_vid_stb_cntr;
> +	u8	hdcp_fail_count;
> +
> +	u8	edid_break;

As far as I can see, this is a boolean, and it's only used as some indirect
return value for the EDID read functions. Please remove it.

> +	u8	edid_checksum;
> +	u8	edid_blocks[256];
> +
> +	u8	read_edid_flag;
> +
> +	u8	down_sample_en;
> +
> +	struct packet_avi	tx_packet_avi;
> +	struct packet_spd	tx_packet_spd;
> +	struct packet_mpeg	tx_packet_mpeg;
> +	struct audio_info_frame	tx_audioinfoframe;
> +
> +	struct common_int	common_int_status;
> +	struct hdmi_rx_int	hdmi_rx_int_status;
> +
> +	enum sp_tx_state		tx_system_state;
> +	enum sp_tx_state		tx_system_state_bak;
> +	enum audio_output_status	tx_ao_state;
> +	enum video_output_status	tx_vo_state;
> +	enum sink_connection_status	tx_sc_state;
> +	enum sp_tx_lt_status		tx_lt_state;
> +	enum hdcp_status		hcdp_state;
> +};
> +
> +static struct slimport sp;
> +
> +static const u16 chipid_list[] = {
> +	0x7818,
> +	0x7816,
> +	0x7814,
> +	0x7812,
> +	0x7810,
> +	0x7806,
> +	0x7802
> +};
> +
> +static void sp_hdmi_rx_new_vsi_int(struct anx78xx *anx78xx);
> +static u8 sp_hdcp_cap_check(struct anx78xx *anx78xx);
> +static void sp_tx_show_information(struct anx78xx *anx78xx);
> +static void sp_print_sys_state(struct anx78xx *anx78xx, u8 ss);
> +
> +static int sp_read_reg(struct anx78xx *anx78xx, u8 slave_addr,
> +		u8 offset, u8 *buf)

nit: I think we generally prefer to see the second line aligned with (.

> +{
> +	u8 ret;
> +	struct i2c_client *client = anx78xx->client;
> +
> +	client->addr = (slave_addr >> 1);
> +
> +	ret = i2c_smbus_read_byte_data(client, offset);
> +	if (ret < 0) {
> +		dev_err(&client->dev, "failed to read i2c addr=%x\n",
> +			slave_addr);
> +		return ret;
> +	}
> +
> +	*buf = ret;
> +
> +	return 0;
> +}
> +
> +static int sp_write_reg(struct anx78xx *anx78xx, u8 slave_addr,
> +		u8 offset, u8 value)
> +{
> +	int ret;
> +	struct i2c_client *client = anx78xx->client;
> +
> +	client->addr = (slave_addr >> 1);
> +
> +	ret = i2c_smbus_write_byte_data(client, offset, value);
> +	if (ret < 0)
> +		dev_err(&client->dev, "failed to write i2c addr=%x\n",
> +			slave_addr);
> +
> +	return ret;
> +}
> +
> +static u8 sp_i2c_read_byte(struct anx78xx *anx78xx,
> +		u8 dev, u8 offset)
> +{
> +	u8 ret;
> +
> +	sp_read_reg(anx78xx, dev, offset, &ret);
> +	return ret;
> +}
> +
> +static void sp_reg_bit_ctl(struct anx78xx *anx78xx, u8 addr, u8 offset,
> +			u8 data, bool enable)
> +{
> +	u8 c;
> +
> +	sp_read_reg(anx78xx, addr, offset, &c);
> +	if (enable) {
> +		if ((c & data) != data) {
> +			c |= data;
> +			sp_write_reg(anx78xx, addr, offset, c);
> +		}
> +	} else
> +		if ((c & data) == data) {
> +			c &= ~data;
> +			sp_write_reg(anx78xx, addr, offset, c);
> +		}
> +}
> +
> +static inline void sp_write_reg_or(struct anx78xx *anx78xx, u8 address,
> +			u8 offset, u8 mask)
> +{
> +	sp_write_reg(anx78xx, address, offset,
> +		sp_i2c_read_byte(anx78xx, address, offset) | mask);
> +}
> +
> +static inline void sp_write_reg_and(struct anx78xx *anx78xx, u8 address,
> +			u8 offset, u8 mask)
> +{
> +	sp_write_reg(anx78xx, address, offset,
> +		sp_i2c_read_byte(anx78xx, address, offset) & mask);
> +}
> +
> +static inline void sp_write_reg_and_or(struct anx78xx *anx78xx, u8 address,
> +			u8 offset, u8 and_mask, u8 or_mask)
> +{
> +	sp_write_reg(anx78xx, address, offset,
> +	  (sp_i2c_read_byte(anx78xx, address, offset) & and_mask) | or_mask);
> +}
> +
> +static inline void sp_write_reg_or_and(struct anx78xx *anx78xx, u8 address,
> +			 u8 offset, u8 or_mask, u8 and_mask)
> +{
> +	sp_write_reg(anx78xx, address, offset,
> +	  (sp_i2c_read_byte(anx78xx, address, offset) | or_mask) & and_mask);
> +}
> +
> +static inline void sp_tx_video_mute(struct anx78xx *anx78xx, bool enable)
> +{
> +	sp_reg_bit_ctl(anx78xx, TX_P2, VID_CTRL1, VIDEO_MUTE, enable);
> +}
> +
> +static inline void hdmi_rx_mute_audio(struct anx78xx *anx78xx, bool enable)
> +{
> +	sp_reg_bit_ctl(anx78xx, RX_P0, RX_MUTE_CTRL, AUD_MUTE, enable);
> +}
> +
> +static inline void hdmi_rx_mute_video(struct anx78xx *anx78xx, bool enable)
> +{
> +	sp_reg_bit_ctl(anx78xx, RX_P0, RX_MUTE_CTRL, VID_MUTE, enable);
> +}
> +
> +static inline void sp_tx_addronly_set(struct anx78xx *anx78xx, bool enable)
> +{
> +	sp_reg_bit_ctl(anx78xx, TX_P0, AUX_CTRL2, ADDR_ONLY_BIT, enable);
> +}
> +
> +static inline void sp_tx_set_link_bw(struct anx78xx *anx78xx, u8 bw)
> +{
> +	sp_write_reg(anx78xx, TX_P0, SP_TX_LINK_BW_SET_REG, bw);
> +}
> +
> +static inline u8 sp_tx_get_link_bw(struct anx78xx *anx78xx)
> +{
> +	return sp_i2c_read_byte(anx78xx, TX_P0, SP_TX_LINK_BW_SET_REG);
> +}

You should mask bits 4:0. Bit 5 has another purpose, and 7:6 are reserved.

Same above, only bits 4:0 should be updated.

> +
> +static inline bool sp_tx_get_pll_lock_status(struct anx78xx *anx78xx)
> +{
> +	u8 temp;
> +
> +	temp = sp_i2c_read_byte(anx78xx, TX_P0, TX_DEBUG1);
> +
> +	return (temp & DEBUG_PLL_LOCK) != 0 ? true : false;
> +}

return (temp & DEBUG_PLL_LOCK) != 0;

> +
> +static inline void gen_m_clk_with_downspeading(struct anx78xx *anx78xx)
> +{
> +	sp_write_reg_or(anx78xx, TX_P0, SP_TX_M_CALCU_CTRL, M_GEN_CLK_SEL);
> +}
> +
> +static inline void gen_m_clk_without_downspeading(struct anx78xx *anx78xx)
> +{
> +	sp_write_reg_and(anx78xx, TX_P0, SP_TX_M_CALCU_CTRL, (~M_GEN_CLK_SEL));
> +}
> +
> +static inline void hdmi_rx_set_hpd(struct anx78xx *anx78xx, bool enable)
> +{
> +	if (enable)
> +		sp_write_reg_or(anx78xx, TX_P2, SP_TX_VID_CTRL3_REG, HPD_OUT);
> +	else
> +		sp_write_reg_and(anx78xx, TX_P2, SP_TX_VID_CTRL3_REG, ~HPD_OUT);
> +}
> +
> +static inline void hdmi_rx_set_termination(struct anx78xx *anx78xx,
> +				bool enable)
> +{
> +	if (enable)
> +		sp_write_reg_and(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG7,
> +				~TERM_PD);
> +	else
> +		sp_write_reg_or(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG7,
> +				TERM_PD);
> +}
> +
> +static inline void sp_tx_clean_hdcp_status(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	sp_write_reg(anx78xx, TX_P0, TX_HDCP_CTRL0, 0x03);
> +	sp_write_reg_or(anx78xx, TX_P0, TX_HDCP_CTRL0, RE_AUTH);
> +	usleep_range(2000, 4000);
> +	dev_dbg(dev, "sp_tx_clean_hdcp_status\n");
> +}
> +
> +static inline void sp_tx_link_phy_initialization(struct anx78xx *anx78xx)
> +{
> +	sp_write_reg(anx78xx, TX_P2, SP_TX_ANALOG_CTRL0, 0x02);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG0, 0x01);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG10, 0x00);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG1, 0x03);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG11, 0x00);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG2, 0x07);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG12, 0x00);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG3, 0x7f);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG13, 0x00);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG4, 0x71);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG14, 0x0c);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG5, 0x6b);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG15, 0x42);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG6, 0x7f);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG16, 0x1e);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG7, 0x73);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG17, 0x3e);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG8, 0x7f);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG18, 0x72);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG9, 0x7F);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG19, 0x7e);
> +}
> +
> +static inline void sp_tx_set_sys_state(struct anx78xx *anx78xx, u8 ss)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	dev_dbg(dev, "set: clean_status: %x,\n ", (u16)sp.need_clean_status);

That cast should not be required... There are a lot of these, in almost every
dev_dbg, please check.

> +
> +	if ((sp.tx_system_state >= STATE_LINK_TRAINING)
> +	   && (ss < STATE_LINK_TRAINING))
> +		sp_write_reg_or(anx78xx, TX_P0, SP_TX_ANALOG_PD_REG, CH0_PD);
> +
> +	sp.tx_system_state_bak = sp.tx_system_state;
> +	sp.tx_system_state = ss;
> +	sp.need_clean_status = 1;
> +	sp_print_sys_state(anx78xx, sp.tx_system_state);
> +}
> +
> +static inline void reg_hardware_reset(struct anx78xx *anx78xx)
> +{
> +	sp_write_reg_or(anx78xx, TX_P2, SP_TX_RST_CTRL_REG, HW_RST);
> +	sp_tx_clean_state_machine();
> +	sp_tx_set_sys_state(anx78xx, STATE_SP_INITIALIZED);
> +	msleep(500);
> +}
> +
> +static inline void write_dpcd_addr(struct anx78xx *anx78xx, u8 addrh,
> +			u8 addrm, u8 addrl)
> +{
> +	u8 temp;
> +
> +	if (sp_i2c_read_byte(anx78xx, TX_P0, AUX_ADDR_7_0) != addrl)
> +		sp_write_reg(anx78xx, TX_P0, AUX_ADDR_7_0, addrl);
> +
> +	if (sp_i2c_read_byte(anx78xx, TX_P0, AUX_ADDR_15_8) != addrm)
> +		sp_write_reg(anx78xx, TX_P0, AUX_ADDR_15_8, addrm);
> +
> +	sp_read_reg(anx78xx, TX_P0, AUX_ADDR_19_16, &temp);
> +
> +	if ((temp & 0x0F) != (addrh & 0x0F))
> +		sp_write_reg(anx78xx, TX_P0, AUX_ADDR_19_16,
> +			(temp  & 0xF0) | addrh);
> +}
> +
> +static inline void goto_next_system_state(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	dev_dbg(dev, "next: clean_status: %x,\n ", (u16)sp.need_clean_status);

Remove space after \n (there are a number of other ones, please remove those
too).

> +
> +	sp.tx_system_state_bak = sp.tx_system_state;
> +	sp.tx_system_state++;

No overflow check? Generally, I'm not really convinced by this state machine
concept. Can't you set sp.tx_system_state directly?

> +	sp_print_sys_state(anx78xx, sp.tx_system_state);
> +}
> +
> +static inline void redo_cur_system_state(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	dev_dbg(dev, "redo: clean_status: %x,\n ", (u16)sp.need_clean_status);
> +
> +	sp.need_clean_status = 1;
> +	sp.tx_system_state_bak = sp.tx_system_state;
> +	sp_print_sys_state(anx78xx, sp.tx_system_state);
> +}
> +
> +static inline void system_state_change_with_case(struct anx78xx *anx78xx,
> +				u8 status)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	if (sp.tx_system_state >= status) {
> +		dev_dbg(dev, "change_case: clean_status: %xm,\n ",
> +			(u16)sp.need_clean_status);
> +
> +		if ((sp.tx_system_state >= STATE_LINK_TRAINING)
> +				&& (status < STATE_LINK_TRAINING))
> +			sp_write_reg_or(anx78xx, TX_P0, SP_TX_ANALOG_PD_REG,
> +					CH0_PD);
> +
> +		sp.need_clean_status = 1;
> +		sp.tx_system_state_bak = sp.tx_system_state;
> +		sp.tx_system_state = status;
> +		sp_print_sys_state(anx78xx, sp.tx_system_state);
> +	}
> +}
> +
> +static void sp_wait_aux_op_finish(struct anx78xx *anx78xx, u8 *err_flag)

Can this function return an int instead of using a pointer for the error
value?

> +{
> +	u8 cnt;
> +	u8 c;
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	*err_flag = 0;
> +	cnt = 150;
> +	while (sp_i2c_read_byte(anx78xx, TX_P0, AUX_CTRL2) & AUX_OP_EN) {
> +		usleep_range(2000, 4000);
> +		if ((cnt--) == 0) {
> +			dev_err(dev, "aux operate failed!\n");
> +			*err_flag = 1;
> +			break;
> +		}
> +	}
> +
> +	sp_read_reg(anx78xx, TX_P0, SP_TX_AUX_STATUS, &c);
> +	if (c & 0x0F) {
> +		dev_err(dev, "wait aux operation status %.2x\n", (u16)c);
> +		*err_flag = 1;
> +	}
> +}
> +
> +static void sp_print_sys_state(struct anx78xx *anx78xx, u8 ss)

print_system_state

> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	switch (ss) {
> +	case STATE_WAITTING_CABLE_PLUG:
> +		dev_dbg(dev, "-STATE_WAITTING_CABLE_PLUG-\n");
> +		break;
> +	case STATE_SP_INITIALIZED:
> +		dev_dbg(dev, "-STATE_SP_INITIALIZED-\n");
> +		break;
> +	case STATE_SINK_CONNECTION:
> +		dev_dbg(dev, "-STATE_SINK_CONNECTION-\n");
> +		break;
> +	case STATE_PARSE_EDID:
> +		dev_dbg(dev, "-STATE_PARSE_EDID-\n");
> +		break;
> +	case STATE_LINK_TRAINING:
> +		dev_dbg(dev, "-STATE_LINK_TRAINING-\n");
> +		break;
> +	case STATE_VIDEO_OUTPUT:
> +		dev_dbg(dev, "-STATE_VIDEO_OUTPUT-\n");
> +		break;
> +	case STATE_HDCP_AUTH:
> +		dev_dbg(dev, "-STATE_HDCP_AUTH-\n");
> +		break;
> +	case STATE_AUDIO_OUTPUT:
> +		dev_dbg(dev, "-STATE_AUDIO_OUTPUT-\n");
> +		break;
> +	case STATE_PLAY_BACK:
> +		dev_dbg(dev, "-STATE_PLAY_BACK-\n");
> +		break;
> +	default:
> +		dev_err(dev, "system state is error1\n");

error1?

> +		break;
> +	}
> +}
> +
> +static void sp_tx_rst_aux(struct anx78xx *anx78xx)
> +{
> +	sp_write_reg_or(anx78xx, TX_P2, RST_CTRL2, AUX_RST);
> +	sp_write_reg_and(anx78xx, TX_P2, RST_CTRL2, ~AUX_RST);
> +}
> +
> +static u8 sp_tx_aux_dpcdread_bytes(struct anx78xx *anx78xx, u8 addrh,
> +		u8 addrm, u8 addrl, u8 ccount, u8 *pbuf)

Return a bool?

> +{
> +	u8 c, c1, i;
> +	u8 bok;
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	sp_write_reg(anx78xx, TX_P0, BUF_DATA_COUNT, 0x80);
> +	c = ((ccount - 1) << 4) | 0x09;
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, c);

You don't really need c here, write the value directly.

> +	write_dpcd_addr(anx78xx, addrh, addrm, addrl);
> +	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, AUX_OP_EN);
> +	usleep_range(2000, 4000);
> +
> +	sp_wait_aux_op_finish(anx78xx, &bok);
> +	if (bok == AUX_ERR) {
> +		dev_err(dev, "aux read failed\n");
> +		sp_read_reg(anx78xx, TX_P2, SP_TX_INT_STATUS1, &c);
> +		sp_read_reg(anx78xx, TX_P0, TX_DEBUG1, &c1);

I'd prefer meaningful names for c/c1.

> +		if (c1 & POLLING_EN) {
> +			if (c & POLLING_ERR)
> +				sp_tx_rst_aux(anx78xx);
> +		} else
> +			sp_tx_rst_aux(anx78xx);

Brackets around else block, or, more simply:
if (!(c1 & POLLING_EN) || (c & POLLING_ERR))
	sp_tx_rst_aux(anx78xx);

> +		return AUX_ERR;
> +	}
> +
> +	for (i = 0; i < ccount; i++) {
> +		sp_read_reg(anx78xx, TX_P0, BUF_DATA_0 + i, &c);
> +		*(pbuf + i) = c;
> +		if (i >= MAX_BUF_CNT)
> +			break;
> +	}
> +	return AUX_OK;
> +}
> +
> +static u8 sp_tx_aux_dpcdwrite_bytes(struct anx78xx *anx78xx, u8 addrh,
> +		u8 addrm, u8 addrl, u8 ccount, u8 *pbuf)
> +{
> +	u8 c, i, ret;
> +
> +	c =  ((ccount - 1) << 4) | 0x08;
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, c);
> +	write_dpcd_addr(anx78xx, addrh, addrm, addrl);
> +	for (i = 0; i < ccount; i++) {
> +		c = *pbuf;
> +		pbuf++;
> +		sp_write_reg(anx78xx, TX_P0, BUF_DATA_0 + i, c);
> +
> +		if (i >= 15)
> +			break;

Why?

> +	}
> +	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, AUX_OP_EN);
> +	sp_wait_aux_op_finish(anx78xx, &ret);
> +	return ret;
> +}
> +
> +static u8 sp_tx_aux_dpcdwrite_byte(struct anx78xx *anx78xx, u8 addrh,
> +		u8 addrm, u8 addrl, u8 data1)
> +{
> +	u8 ret;
> +
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x08);
> +	write_dpcd_addr(anx78xx, addrh, addrm, addrl);
> +	sp_write_reg(anx78xx, TX_P0, BUF_DATA_0, data1);
> +	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, AUX_OP_EN);
> +	sp_wait_aux_op_finish(anx78xx, &ret);
> +	return ret;
> +}
> +
> +static void sp_block_power_ctrl(struct anx78xx *anx78xx,
> +		enum sp_tx_power_block sp_tx_pd_block, u8 power)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	if (power == SP_POWER_ON)
> +		sp_write_reg_and(anx78xx, TX_P2, SP_POWERD_CTRL_REG,
> +			~sp_tx_pd_block);
> +	else
> +		sp_write_reg_or(anx78xx, TX_P2, SP_POWERD_CTRL_REG,
> +			sp_tx_pd_block);
> +
> +	 dev_dbg(dev, "sp_tx_power_on: %.2x\n", (u16)sp_tx_pd_block);

Is that cast needed?

> +}
> +
> +static void sp_vbus_power_off(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	int i;
> +
> +	for (i = 0; i < 5; i++) {
> +		sp_write_reg_and(anx78xx, TX_P2, TX_PLL_FILTER5,
> +				(~P5V_PROTECT_PD & ~SHORT_PROTECT_PD));
> +		sp_write_reg_or(anx78xx, TX_P2, TX_PLL_FILTER, V33_SWITCH_ON);
> +		if (!(sp_i2c_read_byte(anx78xx, TX_P2, TX_PLL_FILTER5)
> +		    & 0xc0)) {
> +			dev_dbg(dev, "3.3V output enabled\n");
> +			break;
> +		}
> +
> +		dev_dbg(dev, "VBUS power can not be supplied\n");

I find this message confusing... The function is supposed to power off vbus?

> +	}
> +}
> +
> +void sp_tx_clean_state_machine(void)
> +{
> +	sp.tx_system_state = STATE_WAITTING_CABLE_PLUG;
> +	sp.tx_system_state_bak = STATE_WAITTING_CABLE_PLUG;
> +	sp.tx_sc_state = SC_INIT;
> +	sp.tx_lt_state = LT_INIT;
> +	sp.hcdp_state = HDCP_CAPABLE_CHECK;
> +	sp.tx_vo_state = VO_WAIT_VIDEO_STABLE;
> +	sp.tx_ao_state = AO_INIT;
> +}
> +
> +u8 sp_tx_cur_states(void)

current_state? Also, return value should be the enum type.

> +{
> +	return sp.tx_system_state;
> +}
> +
> +void sp_tx_variable_init(void)
> +{
> +	u16 i;
> +
> +	sp.block_en = 1;
> +
> +	sp.tx_system_state = STATE_WAITTING_CABLE_PLUG;
> +	sp.tx_system_state_bak = STATE_WAITTING_CABLE_PLUG;
> +
> +	sp.edid_break = 0;
> +	sp.read_edid_flag = 0;
> +	sp.edid_checksum = 0;
> +	for (i = 0; i < 256; i++)
> +		sp.edid_blocks[i] = 0;

Use memset.

> +	sp.tx_lt_state = LT_INIT;
> +	sp.hcdp_state = HDCP_CAPABLE_CHECK;
> +	sp.need_clean_status = 0;
> +	sp.tx_sc_state = SC_INIT;
> +	sp.tx_vo_state = VO_WAIT_VIDEO_STABLE;
> +	sp.tx_ao_state = AO_INIT;
> +	sp.changed_bandwidth = LINK_5P4G;
> +	sp.hdmi_dvi_status = HDMI_MODE;
> +
> +	sp.tx_test_lt = 0;
> +	sp.tx_test_bw = 0;
> +	sp.tx_test_edid = 0;
> +
> +	sp.ds_vid_stb_cntr = 0;
> +	sp.hdcp_fail_count = 0;
> +
> +}
> +
> +static void hdmi_rx_tmds_phy_initialization(struct anx78xx *anx78xx)
> +{
> +	sp_write_reg(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG2, 0xa9);
> +	sp_write_reg(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG7, 0x80);
> +
> +	sp_write_reg(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG1, 0x90);
> +	sp_write_reg(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG6, 0x92);
> +	sp_write_reg(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG20, 0xf2);

Please define these magic numbers.

> +}
> +
> +static void hdmi_rx_initialization(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	sp_write_reg(anx78xx, RX_P0, RX_MUTE_CTRL, AUD_MUTE | VID_MUTE);
> +	sp_write_reg_or(anx78xx, RX_P0, RX_CHIP_CTRL,
> +		MAN_HDMI5V_DET | PLLLOCK_CKDT_EN | DIGITAL_CKDT_EN);
> +
> +	sp_write_reg_or(anx78xx, RX_P0, RX_SRST, HDCP_MAN_RST | SW_MAN_RST |
> +		TMDS_RST | VIDEO_RST);
> +	sp_write_reg_and(anx78xx, RX_P0, RX_SRST, ~HDCP_MAN_RST &
> +		~SW_MAN_RST & ~TMDS_RST & ~VIDEO_RST);
> +
> +	sp_write_reg_or(anx78xx, RX_P0, RX_AEC_EN0, AEC_EN06 | AEC_EN05);
> +	sp_write_reg_or(anx78xx, RX_P0, RX_AEC_EN2, AEC_EN21);
> +	sp_write_reg_or(anx78xx, RX_P0, RX_AEC_CTRL, AVC_EN | AAC_OE | AAC_EN);
> +
> +	sp_write_reg_and(anx78xx, RX_P0, RX_SYS_PWDN1, ~PWDN_CTRL);
> +
> +	sp_write_reg_or(anx78xx, RX_P0, RX_VID_DATA_RNG, R2Y_INPUT_LIMIT);
> +	sp_write_reg(anx78xx, RX_P0, 0x65, 0xc4);
> +	sp_write_reg(anx78xx, RX_P0, 0x66, 0x18);

More magic numbers. Please define both register address and value.

> +	/* enable DDC stretch */
> +	sp_write_reg(anx78xx, TX_P0, TX_EXTRA_ADDR, 0x50);
> +
> +	hdmi_rx_tmds_phy_initialization(anx78xx);
> +	hdmi_rx_set_hpd(anx78xx, 0);
> +	hdmi_rx_set_termination(anx78xx, 0);
> +	dev_dbg(dev, "HDMI Rx is initialized...\n");
> +}
> +
> +struct anx78xx_clock_data const pxtal_data[XTAL_CLK_NUM] = {
> +	{19, 192},
> +	{24, 240},
> +	{25, 250},
> +	{26, 260},
> +	{27, 270},
> +	{38, 384},
> +	{52, 520},
> +	{27, 270},
> +};
> +
> +static void xtal_clk_sel(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	dev_dbg(dev, "define XTAL_CLK:  %x\n ", (u16)XTAL_27M);

Remove space after \n.

> +	sp_write_reg_and_or(anx78xx, TX_P2,
> +			TX_ANALOG_DEBUG2, (~0x3c), 0x3c & (XTAL_27M << 2));
> +	sp_write_reg(anx78xx, TX_P0, 0xEC, (u8)(((u16)XTAL_CLK_M10)));
> +	sp_write_reg(anx78xx, TX_P0, 0xED,
> +		(u8)(((u16)XTAL_CLK_M10 & 0xFF00) >> 2) | XTAL_CLK);
> +
> +	sp_write_reg(anx78xx, TX_P0,
> +			I2C_GEN_10US_TIMER0, (u8)(((u16)XTAL_CLK_M10)));
> +	sp_write_reg(anx78xx, TX_P0, I2C_GEN_10US_TIMER1,
> +			(u8)(((u16)XTAL_CLK_M10 & 0xFF00) >> 8));
> +	sp_write_reg(anx78xx, TX_P0, 0xBF, (u8)(((u16)XTAL_CLK - 1)));
> +
> +	sp_write_reg_and_or(anx78xx, RX_P0, 0x49, 0x07,
> +			(u8)(((((u16)XTAL_CLK) >> 1) - 2) << 3));

Many magic numbers, and too many parentheses in many cases.

> +
> +}
> +
> +void sp_tx_initialization(struct anx78xx *anx78xx)
> +{
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL2, 0x30);
> +	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, 0x08);
> +
> +	sp_write_reg_and(anx78xx, TX_P0, TX_HDCP_CTRL,
> +			(u8)(~AUTO_EN) & (~AUTO_START));
> +	sp_write_reg(anx78xx, TX_P0, OTP_KEY_PROTECT1, OTP_PSW1);
> +	sp_write_reg(anx78xx, TX_P0, OTP_KEY_PROTECT2, OTP_PSW2);
> +	sp_write_reg(anx78xx, TX_P0, OTP_KEY_PROTECT3, OTP_PSW3);
> +	sp_write_reg_or(anx78xx, TX_P0, HDCP_KEY_CMD, DISABLE_SYNC_HDCP);
> +	sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL8_REG, VID_VRES_TH);
> +
> +	sp_write_reg(anx78xx, TX_P0, HDCP_AUTO_TIMER, HDCP_AUTO_TIMER_VAL);
> +	sp_write_reg_or(anx78xx, TX_P0, TX_HDCP_CTRL, LINK_POLLING);
> +
> +	sp_write_reg_or(anx78xx, TX_P0, TX_LINK_DEBUG, M_VID_DEBUG);
> +	sp_write_reg_or(anx78xx, TX_P2, TX_ANALOG_DEBUG2, POWERON_TIME_1P5MS);
> +
> +	xtal_clk_sel(anx78xx);
> +	sp_write_reg(anx78xx, TX_P0, AUX_DEFER_CTRL, 0x8C);
> +
> +	sp_write_reg_or(anx78xx, TX_P0, TX_DP_POLLING, AUTO_POLLING_DISABLE);
> +	/*
> +	 * Short the link intergrity check timer to speed up bstatus
> +	 * polling for HDCP CTS item 1A-07
> +	 */
> +	sp_write_reg(anx78xx, TX_P0, SP_TX_LINK_CHK_TIMER, 0x1d);
> +	sp_write_reg_or(anx78xx, TX_P0, TX_MISC, EQ_TRAINING_LOOP);
> +
> +	sp_write_reg_or(anx78xx, TX_P0, SP_TX_ANALOG_PD_REG, CH0_PD);
> +
> +	sp_write_reg(anx78xx, TX_P2, SP_TX_INT_CTRL_REG, 0X01);
> +	/* disable HDCP mismatch function for VGA dongle */
> +	sp_tx_link_phy_initialization(anx78xx);
> +	gen_m_clk_with_downspeading(anx78xx);
> +
> +	sp.down_sample_en = 0;
> +}
> +
> +bool sp_chip_detect(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u16 id;
> +	u8 idh = 0, idl = 0;
> +	int i;
> +
> +	anx78xx_poweron(anx78xx);
> +
> +	/* check chip id */
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_DEV_IDL_REG, &idl);
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_DEV_IDH_REG, &idh);
> +	id = idl | (idh << 8);
> +
> +	dev_dbg(dev, "CHIPID: ANX%x\n", id & 0xffff);
> +
> +	for (i = 0; i < sizeof(chipid_list) / sizeof(u16); i++) {

ARRAY_SIZE

> +		if (id == chipid_list[i])
> +			return true;
> +	}
> +
> +	return false;
> +}
> +
> +static void sp_waiting_cable_plug_process(struct anx78xx *anx78xx)
> +{
> +	sp_tx_variable_init();
> +	anx78xx_poweron(anx78xx);
> +	goto_next_system_state(anx78xx);
> +}
> +
> +/*
> + * Check if it is ANALOGIX dongle.
> + */
> +static const u8 ANX_OUI[3] = {0x00, 0x22, 0xB9};
> +
> +static u8 is_anx_dongle(struct anx78xx *anx78xx)

bool return value?

> +{
> +	u8 buf[3];
> +
> +	/* 0x0500~0x0502: BRANCH_IEEE_OUI */
> +	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x05, 0x00, 3, buf);
> +
> +	if (!memcmp(buf, ANX_OUI, 3))
> +		return 1;
> +
> +	return 0;
> +}
> +
> +static void sp_tx_get_rx_bw(struct anx78xx *anx78xx, u8 *bw)
> +{
> +	if (is_anx_dongle(anx78xx))

Ah, so by is_anx_dongle you mean is _not_ anx_dongle, right?

> +		*bw = LINK_6P75G;	/* just for debug */
> +	else
> +		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00,
> +					DPCD_MAX_LINK_RATE, 1, bw);
> +}
> +
> +static u8 sp_tx_get_cable_type(struct anx78xx *anx78xx,
> +			enum cable_type_status det_cable_type_state)

return the enum type.

> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	u8 ds_port_preset;
> +	u8 aux_status;
> +	u8 data_buf[16];
> +	u8 cur_cable_type;
> +
> +	ds_port_preset = 0;
> +	cur_cable_type = DWN_STRM_IS_NULL;
> +
> +	aux_status = sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00, 0x05, 1,
> +					&ds_port_preset);

You only check the return value if state is CHECK_AUXCH, is that intentional?

> +
> +	dev_dbg(dev, "DPCD 0x005: %x\n", (int)ds_port_preset);
> +
> +	switch (det_cable_type_state) {
> +	case CHECK_AUXCH:
> +		if (AUX_OK == aux_status) {

aux_status == AUX_OK.

> +			sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00, 0, 0x0c,
> +					data_buf);
> +			det_cable_type_state = GETTED_CABLE_TYPE;
> +		} else {
> +			dev_err(dev, " AUX access error\n");
> +			break;
> +		}
> +	case GETTED_CABLE_TYPE:
> +		switch ((ds_port_preset  & (BIT(1) | BIT(2))) >> 1) {
> +		case 0x00:
> +			cur_cable_type = DWN_STRM_IS_DIGITAL;
> +			dev_dbg(dev, "Downstream is DP dongle.\n");
> +			break;
> +		case 0x01:
> +		case 0x03:
> +			cur_cable_type = DWN_STRM_IS_ANALOG;
> +			dev_dbg(dev, "Downstream is VGA dongle.\n");
> +			break;
> +		case 0x02:
> +			cur_cable_type = DWN_STRM_IS_HDMI;
> +			dev_dbg(dev, "Downstream is HDMI dongle.\n");
> +			break;
> +		default:
> +			cur_cable_type = DWN_STRM_IS_NULL;
> +			dev_err(dev, "Downstream can not recognized.\n");
> +			break;
> +		}
> +	default:
> +		break;
> +	}
> +	return cur_cable_type;
> +}
> +
> +static u8 sp_tx_get_dp_connection(struct anx78xx *anx78xx)
> +{
> +	u8 c;
> +
> +	if (AUX_OK != sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02,
> +				DPCD_SINK_COUNT, 1, &c))
> +		return 0;
> +
> +	if (c & 0x1f) {
> +		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00, 0x04, 1, &c);
> +		if (c & 0x20) {
> +			sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x06, 0x00, 1,
> +						&c);
> +			/*
> +			 * Bit 5 = SET_DN_DEVICE_DP_PWR_5V
> +			 * Bit 6 = SET_DN_DEVICE_DP_PWR_12V
> +			 * Bit 7 = SET_DN_DEVICE_DP_PWR_18V
> +			 */
> +			c = c & 0x1F;
> +			sp_tx_aux_dpcdwrite_byte(anx78xx, 0x00, 0x06, 0x00,
> +						c | 0x20);
> +		}
> +		return 1;
> +	} else
> +		return 0;

Braces around else block.

> +}
> +
> +static u8 sp_tx_get_downstream_connection(struct anx78xx *anx78xx)
> +{
> +	return sp_tx_get_dp_connection(anx78xx);
> +}

That function does not seem necessary...

> +
> +static void sp_sink_connection(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	switch (sp.tx_sc_state) {
> +	case SC_INIT:
> +		sp.tx_sc_state++;
> +	case SC_CHECK_CABLE_TYPE:
> +	case SC_WAITTING_CABLE_TYPE:
> +	default:
> +		if (sp_tx_get_cable_type(anx78xx, CHECK_AUXCH) ==
> +		   DWN_STRM_IS_NULL) {

Indentation.

> +			sp.tx_sc_state++;
> +			if (sp.tx_sc_state >= SC_WAITTING_CABLE_TYPE) {
> +				sp.tx_sc_state = SC_NOT_CABLE;
> +				dev_dbg(dev, "Can not get cable type!\n");
> +			}
> +			break;
> +		}
> +
> +		sp.tx_sc_state = SC_SINK_CONNECTED;
> +	case SC_SINK_CONNECTED:
> +		if (sp_tx_get_downstream_connection(anx78xx))
> +			goto_next_system_state(anx78xx);
> +		break;
> +	case SC_NOT_CABLE:
> +		sp_vbus_power_off(anx78xx);
> +		reg_hardware_reset(anx78xx);
> +		break;
> +	}
> +}
> +
> +/******************start EDID process********************/
> +static void sp_tx_enable_video_input(struct anx78xx *anx78xx, u8 enable)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 c;
> +
> +	sp_read_reg(anx78xx, TX_P2, VID_CTRL1, &c);
> +	if (enable) {
> +		c = (c & 0xf7) | VIDEO_EN;

What is that 0x08 bit that you unset?

> +		sp_write_reg(anx78xx, TX_P2, VID_CTRL1, c);
> +		dev_dbg(dev, "Slimport Video is enabled!\n");
> +
> +	} else {
> +		c &= ~VIDEO_EN;
> +		sp_write_reg(anx78xx, TX_P2, VID_CTRL1, c);
> +		dev_dbg(dev, "Slimport Video is disabled!\n");
> +	}
> +}
> +
> +static u8 sp_get_edid_detail(u8 *data_buf)
> +{
> +	u16 pixclock_edid;
> +
> +	pixclock_edid = ((((u16)data_buf[1] << 8))
> +			| ((u16)data_buf[0] & 0xFF));
> +	if (pixclock_edid <= 5300)
> +		return LINK_1P62G;
> +	else if ((pixclock_edid > 5300) && (pixclock_edid <= 8900))
> +		return LINK_2P7G;
> +	else if ((pixclock_edid > 8900) && (pixclock_edid <= 18000))
> +		return LINK_5P4G;
> +	else
> +		return LINK_6P75G;
> +}
> +
> +static u8 sp_parse_edid_to_get_bandwidth(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 desc_offset = 0;
> +	u8 i, bandwidth, temp;
> +
> +	bandwidth = LINK_1P62G;
> +	temp = LINK_1P62G;

Not necessary.

> +	i = 0;
> +	while (i < 4 && sp.edid_blocks[0x36 + desc_offset] != 0) {

desc_offset = 0x12*i ?

Also, use a for loop...

> +		temp = sp_get_edid_detail(sp.edid_blocks + 0x36 + desc_offset);
> +		dev_dbg(dev, "bandwidth via EDID : %x\n", (u16)temp);
> +		if (bandwidth < temp)
> +			bandwidth = temp;
> +		if (bandwidth > LINK_5P4G)

Might be clearer to say >= LINK_6P75G?

> +			break;
> +		desc_offset += 0x12;
> +		++i;
> +	}
> +	return bandwidth;
> +}
> +
> +static void sp_tx_aux_wr(struct anx78xx *anx78xx, u8 offset)
> +{
> +	sp_write_reg(anx78xx, TX_P0, BUF_DATA_0, offset);
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x04);
> +	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, AUX_OP_EN);
> +	sp_wait_aux_op_finish(anx78xx, &sp.edid_break);
> +}

Please use a return value, instead of assigning some variable.

> +
> +static void sp_tx_aux_rd(struct anx78xx *anx78xx, u8 len_cmd)
> +{
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, len_cmd);
> +	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, AUX_OP_EN);
> +	sp_wait_aux_op_finish(anx78xx, &sp.edid_break);
> +}
> +
> +static u8 sp_tx_get_edid_block(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 c;
> +
> +	sp_tx_aux_wr(anx78xx, 0x7e);
> +	sp_tx_aux_rd(anx78xx, 0x01);
> +	sp_read_reg(anx78xx, TX_P0, BUF_DATA_0, &c);
> +	dev_dbg(dev, "EDID Block = %d\n", (int)(c + 1));
> +
> +	if (c > 3)
> +		c = 1;
> +	return c;
> +}
> +
> +static void sp_edid_read(struct anx78xx *anx78xx, u8 offset,
> +			u8 *pblock_buf)
> +{
> +	u8 data_cnt, cnt;
> +	u8 c;
> +
> +	sp_tx_aux_wr(anx78xx, offset);
> +	sp_tx_aux_rd(anx78xx, 0xf5);
> +	data_cnt = 0;
> +	cnt = 0;
> +
> +	while ((data_cnt) < 16)	{

No parentheses around data_cnt.

> +		sp_read_reg(anx78xx, TX_P0, BUF_DATA_COUNT, &c);
> +
> +		if ((c & 0x1f) != 0) {
> +			data_cnt = data_cnt + c;

Just before you masked 0x1f, and now you take the whole byte.

> +			do {
> +				sp_read_reg(anx78xx, TX_P0, BUF_DATA_0 + c - 1,
> +					&(pblock_buf[c - 1]));
> +				if (c == 1)
> +					break;
> +			} while (c--);

Please refactor this loop.

> +		} else {
> +			if (cnt++ <= 2) {

Ah, so cnt is some kind of error counter? Please use meaningful variable names.

> +				sp_tx_rst_aux(anx78xx);
> +				c = 0x05 | ((0x0f - data_cnt) << 4);
> +				sp_tx_aux_rd(anx78xx, c);
> +			} else {
> +				 sp.edid_break = 1;
> +				 break;
> +			}
> +		}
> +	}
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x01);
> +	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, ADDR_ONLY_BIT | AUX_OP_EN);
> +	sp_wait_aux_op_finish(anx78xx, &sp.edid_break);
> +	sp_tx_addronly_set(anx78xx, 0);
> +}
> +
> +static void sp_tx_edid_read_initial(struct anx78xx *anx78xx)
> +{
> +	sp_write_reg(anx78xx, TX_P0, AUX_ADDR_7_0, 0x50);
> +	sp_write_reg(anx78xx, TX_P0, AUX_ADDR_15_8, 0);
> +	sp_write_reg_and(anx78xx, TX_P0, AUX_ADDR_19_16, 0xf0);

Magic numbers...

> +}
> +
> +static void sp_seg_edid_read(struct anx78xx *anx78xx,
> +			u8 segment, u8 offset)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 c, cnt;
> +	int i;
> +
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x04);
> +
> +	sp_write_reg(anx78xx, TX_P0, AUX_ADDR_7_0, 0x30);
> +
> +	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, ADDR_ONLY_BIT | AUX_OP_EN);
> +
> +	sp_read_reg(anx78xx, TX_P0, AUX_CTRL2, &c);
> +
> +	sp_wait_aux_op_finish(anx78xx, &sp.edid_break);
> +	sp_read_reg(anx78xx, TX_P0, AUX_CTRL, &c);
> +
> +	sp_write_reg(anx78xx, TX_P0, BUF_DATA_0, segment);
> +
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x04);
> +
> +	sp_write_reg_and_or(anx78xx, TX_P0, AUX_CTRL2, ~ADDR_ONLY_BIT,
> +			AUX_OP_EN);
> +	cnt = 0;
> +	sp_read_reg(anx78xx, TX_P0, AUX_CTRL2, &c);
> +	while (c & AUX_OP_EN) {
> +		usleep_range(1000, 2000);
> +		cnt++;
> +		if (cnt == 10) {
> +			dev_dbg(dev, "write break");

What does this mean?

> +			sp_tx_rst_aux(anx78xx);
> +			cnt = 0;

Not needed...

> +			sp.edid_break = 1;
> +			return;
> +		}
> +		sp_read_reg(anx78xx, TX_P0, AUX_CTRL2, &c);
> +
> +	}
> +
> +	sp_write_reg(anx78xx, TX_P0, AUX_ADDR_7_0, 0x50);
> +
> +	sp_tx_aux_wr(anx78xx, offset);
> +
> +	sp_tx_aux_rd(anx78xx, 0xf5);
> +	cnt = 0;
> +	for (i = 0; i < 16; i++) {
> +		sp_read_reg(anx78xx, TX_P0, BUF_DATA_COUNT, &c);
> +		while ((c & 0x1f) == 0) {
> +			usleep_range(2000, 4000);
> +			cnt++;
> +			sp_read_reg(anx78xx, TX_P0, BUF_DATA_COUNT, &c);
> +			if (cnt == 10) {
> +				dev_dbg(dev, "read break");
> +				sp_tx_rst_aux(anx78xx);
> +				sp.edid_break = 1;
> +				return;
> +			}
> +		}
> +
> +

Remove extra blank line.

> +		sp_read_reg(anx78xx, TX_P0, BUF_DATA_0+i, &c);
> +	}
> +
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x01);
> +	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, ADDR_ONLY_BIT | AUX_OP_EN);
> +	sp_write_reg_and(anx78xx, TX_P0, AUX_CTRL2, ~ADDR_ONLY_BIT);
> +	sp_read_reg(anx78xx, TX_P0, AUX_CTRL2, &c);
> +	while (c & AUX_OP_EN)
> +		sp_read_reg(anx78xx, TX_P0, AUX_CTRL2, &c);

Loop forever? So this one is guaranteed to complete?

> +}
> +
> +static bool sp_edid_checksum_result(u8 *pbuf)
> +{
> +	u8 cnt, checksum;
> +
> +	checksum = 0;
> +
> +	for (cnt = 0; cnt < 0x80; cnt++)
> +		checksum = checksum + pbuf[cnt];
> +
> +	sp.edid_checksum = checksum - pbuf[0x7f];
> +	sp.edid_checksum = ~sp.edid_checksum + 1;
> +
> +	return checksum == 0 ? 1 : 0;

return checksum == 0;

> +}
> +
> +static void sp_edid_header_result(struct anx78xx *anx78xx, u8 *pbuf)

This function isn't very useful, integrate it with sp_check_edid_data.

> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	if ((pbuf[0] == 0) && (pbuf[7] == 0) && (pbuf[1] == 0xff)
> +		&& (pbuf[2] == 0xff) && (pbuf[3] == 0xff)
> +		&& (pbuf[4] == 0xff) && (pbuf[5] == 0xff) && (pbuf[6] == 0xff))

Fix indentation, and check bytes in order...

> +		dev_dbg(dev, "Good EDID header!\n");
> +	else
> +		dev_err(dev, "Bad EDID header!\n");
> +}
> +
> +static void sp_check_edid_data(struct anx78xx *anx78xx, u8 *pblock_buf)

Same remark, only called from one place, and does nothing on error, anyway...

> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 i;
> +
> +	sp_edid_header_result(anx78xx, pblock_buf);
> +	for (i = 0; i <= ((pblock_buf[0x7e] > 1) ? 1 : pblock_buf[0x7e]); i++) {
> +		if (!sp_edid_checksum_result(pblock_buf + i * 128))
> +			dev_err(dev, "Block %x edid checksum error\n", (u16)i);
> +		else
> +			dev_dbg(dev, "Block %x edid checksum OK\n", (u16)i);
> +	}
> +}
> +
> +static bool sp_tx_edid_read(struct anx78xx *anx78xx, u8 *pedid_blocks_buf)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 offset = 0;
> +	u8 count, blocks_num;
> +	u8 pblock_buf[16];
> +	u8 i, j, c;
> +
> +	sp.edid_break = 0;
> +	sp_tx_edid_read_initial(anx78xx);
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x04);
> +	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, 0x03);
> +	sp_wait_aux_op_finish(anx78xx, &sp.edid_break);
> +	sp_tx_addronly_set(anx78xx, 0);
> +
> +	blocks_num = sp_tx_get_edid_block(anx78xx);
> +
> +	count = 0;
> +	do {

for loop please.

> +		switch (count) {
> +		case 0:
> +		case 1:
> +			for (i = 0; i < 8; i++) {
> +				offset = (i + count * 8) * 16;
> +				sp_edid_read(anx78xx, offset, pblock_buf);
> +				if (sp.edid_break == 1)
> +					break;

This is a good candidate for a goto label.

> +				for (j = 0; j < 16; j++) {
> +					pedid_blocks_buf[offset + j]
> +						= pblock_buf[j];

Can you read directly into pedid_block_buf?

> +				}
> +			}
> +			break;
> +		case 2:
> +			offset = 0x00;
> +			for (j = 0; j < 8; j++) {
> +				if (sp.edid_break == 1)
> +					break;
> +				sp_seg_edid_read(anx78xx, count / 2, offset);
> +				offset = offset + 0x10;
> +			}
> +			break;
> +		case 3:
> +			offset = 0x80;
> +			for (j = 0; j < 8; j++) {
> +				if (sp.edid_break == 1)
> +					break;
> +				sp_seg_edid_read(anx78xx, count / 2, offset);
> +				offset = offset + 0x10;
> +			}
> +			break;

Apart from the offset, those 2 cases look very similar...

> +		default:
> +			break;
> +		}
> +		count++;
> +		if (sp.edid_break == 1)
> +			break;
> +	} while (blocks_num >= count);
> +
> +	sp_tx_rst_aux(anx78xx);
> +	if (sp.read_edid_flag == 0) {
> +		sp_check_edid_data(anx78xx, pedid_blocks_buf);
> +		sp.read_edid_flag = 1;
> +	}
> +	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x18, 1, &c);
> +	if (c & 0x04) {
> +		dev_dbg(dev, "check sum = %.2x\n", (u16)sp.edid_checksum);
> +		c = sp.edid_checksum;
> +		sp_tx_aux_dpcdwrite_bytes(anx78xx, 0x00, 0x02, 0x61, 1, &c);
> +		sp.tx_test_edid = 1;
> +		c = 0x04;
> +		sp_tx_aux_dpcdwrite_bytes(anx78xx, 0x00, 0x02, 0x60, 1, &c);
> +		dev_dbg(dev, "Test EDID done\n");
> +
> +	}
> +
> +	return 0;

Always returns 0...

> +}
> +
> +static bool sp_check_with_pre_edid(struct anx78xx *anx78xx, u8 *org_buf)

If you return a bool, true means ok, false means error. You do the opposite here.

> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 i;
> +	u8 temp_buf[16];
> +	bool return_flag;

That's not really a flag. "ret" is a more common name.

> +
> +	return_flag = 0;
> +	sp.edid_break = 0;
> +	sp_tx_edid_read_initial(anx78xx);
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x04);
> +	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, 0x03);
> +	sp_wait_aux_op_finish(anx78xx, &sp.edid_break);
> +	sp_tx_addronly_set(anx78xx, 0);
> +
> +	sp_edid_read(anx78xx, 0x70, temp_buf);
> +
> +	if (sp.edid_break == 0) {
> +
> +		for (i = 0; i < 16; i++) {
> +			if (org_buf[0x70 + i] != temp_buf[i]) {
> +				dev_dbg(dev, "%s\n",
> +					"different checksum and blocks num\n");
> +				return_flag = 1;
> +				break;
> +			}
> +		}
> +	} else
> +		return_flag = 1;
> +
> +	if (return_flag)
> +		goto return_point;

You can do that earlier... Easiest might be to set ret = false as default value.

> +
> +	sp_edid_read(anx78xx, 0x08, temp_buf);
> +	if (sp.edid_break == 0) {
> +		for (i = 0; i < 16; i++) {
> +			if (org_buf[i + 8] != temp_buf[i]) {
> +				dev_dbg(dev, "different edid information\n");
> +				return_flag = 1;
> +				break;
> +			}
> +		}
> +	} else
> +		return_flag = 1;
> +
> +return_point:
> +	sp_tx_rst_aux(anx78xx);
> +
> +	return return_flag;
> +}
> +
> +static void sp_edid_process(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 temp_value, temp_value1;
> +	u8 i;
> +
> +	dev_dbg(dev, "edid_process\n");
> +
> +	if (sp.read_edid_flag == 1) {
> +		if (sp_check_with_pre_edid(anx78xx, sp.edid_blocks))
> +			sp.read_edid_flag = 0;
> +		else
> +			dev_dbg(dev, "Don`t need to read edid!\n");

"Don't need". And then I'm not sure that that means.

> +	}
> +
> +	if (sp.read_edid_flag == 0) {
> +		sp_tx_edid_read(anx78xx, sp.edid_blocks);
> +		if (sp.edid_break)
> +			dev_err(dev, "ERR:EDID corruption!\n");
> +	}
> +
> +	/* Release the HPD after the OTP loaddown */
> +	i = 10;
> +	do {
> +		if ((sp_i2c_read_byte(anx78xx, TX_P0, HDCP_KEY_STATUS) & 0x01))

Too many parentheses.

> +			break;
> +
> +		dev_dbg(dev, "waiting HDCP KEY loaddown\n");
> +		usleep_range(1000, 2000);
> +	} while (--i);

For loop.

> +
> +	sp_write_reg(anx78xx, RX_P0, HDMI_RX_INT_MASK1_REG, 0xe2);
> +	hdmi_rx_set_hpd(anx78xx, 1);
> +	dev_dbg(dev, "hdmi_rx_set_hpd 1 !\n");
> +
> +	hdmi_rx_set_termination(anx78xx, 1);
> +
> +	sp_tx_get_rx_bw(anx78xx, &temp_value);
> +	dev_dbg(dev, "RX BW %x\n", (u16)temp_value);
> +
> +	temp_value1 = sp_parse_edid_to_get_bandwidth(anx78xx);
> +	if (temp_value <= temp_value1)
> +		temp_value1 = temp_value;
> +
> +	dev_dbg(dev, "set link bw in edid %x\n", (u16)temp_value1);
> +	sp.changed_bandwidth = temp_value1;
> +	goto_next_system_state(anx78xx);
> +}
> +/******************End EDID process********************/
> +
> +/******************start Link training process********************/
> +static void sp_tx_lvttl_bit_mapping(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 c, colorspace;
> +	u8 vid_bit;
> +
> +	vid_bit = 0;
> +	sp_read_reg(anx78xx, RX_P1, HDMI_RX_AVI_DATA00_REG, &colorspace);
> +	colorspace &= 0x60;
> +
> +	switch (((sp_i2c_read_byte(anx78xx, RX_P0, HDMI_RX_VIDEO_STATUS_REG1)
> +		& COLOR_DEPTH) >> 4)) {
> +	default:
> +	case HDMI_LEGACY:
> +		c = IN_BPC_8BIT;
> +		vid_bit = 0;
> +		break;
> +	case HDMI_24BIT:
> +		c = IN_BPC_8BIT;
> +		if (colorspace == 0x20)
> +			vid_bit = 5;
> +		else
> +			vid_bit = 1;
> +		break;
> +	case HDMI_30BIT:
> +		c = IN_BPC_10BIT;
> +		if (colorspace == 0x20)
> +			vid_bit = 6;
> +		else
> +			vid_bit = 2;
> +		break;
> +	case HDMI_36BIT:
> +		c = IN_BPC_12BIT;
> +		if (colorspace == 0x20)
> +			vid_bit = 6;
> +		else
> +			vid_bit = 3;
> +		break;
> +
> +	}
> +	/*
> +	 * For down sample video (12bit, 10bit ---> 8bit),
> +	 * this register don`t change

doesn't

> +	 */
> +	if (sp.down_sample_en == 0)
> +		sp_write_reg_and_or(anx78xx, TX_P2,
> +			SP_TX_VID_CTRL2_REG, 0x8c, colorspace >> 5 | c);
> +
> +	/* Patch: for 10bit video must be set this value to 12bit by someone */
> +	if (sp.down_sample_en == 1 && c == IN_BPC_10BIT)
> +		vid_bit = 3;
> +
> +	sp_write_reg_and_or(anx78xx, TX_P2,
> +		BIT_CTRL_SPECIFIC, 0x00, ENABLE_BIT_CTRL | vid_bit << 1);
> +
> +	if (sp.tx_test_edid) {
> +		sp_write_reg_and(anx78xx, TX_P2, SP_TX_VID_CTRL2_REG, 0x8f);
> +		dev_dbg(dev, "***color space is set to 18bit***\n");
> +	}
> +
> +	if (colorspace) {
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_VID_BLANK_SET1, 0x80);
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_VID_BLANK_SET2, 0x00);
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_VID_BLANK_SET3, 0x80);
> +	} else {
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_VID_BLANK_SET1, 0x0);
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_VID_BLANK_SET2, 0x0);
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_VID_BLANK_SET3, 0x0);
> +	}
> +}
> +
> +static ulong sp_tx_pclk_calc(struct anx78xx *anx78xx)

"ulong" is very uncommon in the kernel. Use unsigned long, or maybe
unsigned int is enough. Or maybe u32, u64 if that matters.

> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	ulong str_plck;
> +	u16 vid_counter;
> +	u8 c;
> +
> +	sp_read_reg(anx78xx, RX_P0, 0x8d, &c);
> +	vid_counter = c;
> +	vid_counter = vid_counter << 8;

c << 8

> +	sp_read_reg(anx78xx, RX_P0, 0x8c, &c);
> +	vid_counter |= c;
> +	str_plck = ((ulong)vid_counter * XTAL_CLK_M10)  >> 12;
> +	dev_dbg(dev, "PCLK = %d.%d\n", (((u16)(str_plck))/10),
> +		((u16)str_plck - (((u16)str_plck/10)*10)));
> +	return str_plck;
> +}
> +
> +static u8 sp_tx_bw_lc_sel(struct anx78xx *anx78xx, ulong pclk)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	ulong pixel_clk;
> +	u8 c1;
> +
> +	switch (((sp_i2c_read_byte(anx78xx, RX_P0, HDMI_RX_VIDEO_STATUS_REG1)
> +		& COLOR_DEPTH) >> 4)) {
> +	case HDMI_LEGACY:
> +	case HDMI_24BIT:
> +	default:
> +		pixel_clk = pclk;
> +		break;
> +	case HDMI_30BIT:
> +		pixel_clk = (pclk * 5) >> 2;
> +		break;
> +	case HDMI_36BIT:
> +		pixel_clk = (pclk * 3) >> 1;
> +		break;
> +	}
> +	dev_dbg(dev, "pixel_clk = %d.%d\n", (((u16)(pixel_clk))/10),
> +		((u16)pixel_clk - (((u16)pixel_clk/10)*10)));
> +
> +	sp.down_sample_en = 0;
> +	if (pixel_clk <= 530)
> +		c1 = LINK_1P62G;
> +	else if ((530 < pixel_clk) && (pixel_clk <= 890))
> +		c1 = LINK_2P7G;
> +	else if ((890 < pixel_clk) && (pixel_clk <= 1800))
> +		c1 = LINK_5P4G;
> +	else {
> +		 c1 = LINK_6P75G;

Indentation.

> +		 if (pixel_clk > 2240)
> +			sp.down_sample_en = 1;
> +	}
> +
> +	if (sp_tx_get_link_bw(anx78xx) != c1) {
> +		sp.changed_bandwidth = c1;
> +		dev_dbg(dev, "%s! %.2x\n",
> +		    "different bandwidth between sink support and cur video",

No need to pass that string as parameter.

> +		    (u16)c1);
> +		return 1;
> +	}
> +	return 0;
> +}
> +
> +static void sp_tx_spread_enable(struct anx78xx *anx78xx, u8 benable)
> +{
> +	u8 c;
> +
> +	sp_read_reg(anx78xx, TX_P0, SP_TX_DOWN_SPREADING_CTRL1, &c);
> +
> +	if (benable) {
> +		c |= SP_TX_SSC_DWSPREAD;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_DOWN_SPREADING_CTRL1, c);
> +
> +		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x01,
> +			DPCD_DOWNSPREAD_CTRL, 1, &c);
> +		c |= SPREAD_AMPLITUDE;
> +		sp_tx_aux_dpcdwrite_byte(anx78xx, 0x00, 0x01,
> +					DPCD_DOWNSPREAD_CTRL, c);
> +	} else {
> +		c &= ~SP_TX_SSC_DISABLE;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_DOWN_SPREADING_CTRL1, c);
> +
> +		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x01,
> +			DPCD_DOWNSPREAD_CTRL, 1, &c);
> +		c &= ~SPREAD_AMPLITUDE;
> +		sp_tx_aux_dpcdwrite_byte(anx78xx, 0x00, 0x01,
> +			DPCD_DOWNSPREAD_CTRL, c);
> +	}
> +}
> +
> +static void sp_tx_config_ssc(struct anx78xx *anx78xx,
> +			enum sp_ssc_dep sscdep)
> +{
> +	sp_write_reg(anx78xx, TX_P0, SP_TX_DOWN_SPREADING_CTRL1, 0x0);
> +	sp_write_reg(anx78xx, TX_P0, SP_TX_DOWN_SPREADING_CTRL1, sscdep);
> +	sp_tx_spread_enable(anx78xx, 1);
> +}
> +
> +static void sp_tx_enhancemode_set(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 c;
> +
> +	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00, DPCD_MAX_LANE_COUNT,
> +				1, &c);
> +	if (c & ENHANCED_FRAME_CAP) {
> +		sp_write_reg_or(anx78xx, TX_P0, SP_TX_SYS_CTRL4_REG,
> +				ENHANCED_MODE);
> +
> +		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x01,
> +			DPCD_LANE_COUNT_SET, 1, &c);
> +		c |= ENHANCED_FRAME_EN;
> +		sp_tx_aux_dpcdwrite_byte(anx78xx, 0x00, 0x01,
> +			DPCD_LANE_COUNT_SET, c);
> +
> +		dev_dbg(dev, "Enhance mode enabled\n");
> +	} else {
> +		sp_write_reg_and(anx78xx, TX_P0, SP_TX_SYS_CTRL4_REG,
> +				~ENHANCED_MODE);
> +
> +		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x01,
> +			DPCD_LANE_COUNT_SET, 1, &c);
> +
> +		c &= ~ENHANCED_FRAME_EN;
> +		sp_tx_aux_dpcdwrite_byte(anx78xx, 0x00, 0x01,
> +			DPCD_LANE_COUNT_SET, c);
> +
> +		dev_dbg(dev, "Enhance mode disabled\n");
> +	}
> +}
> +
> +static u16 sp_tx_link_err_check(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u16 errl = 0, errh = 0;
> +	u8 bytebuf[2];
> +
> +	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x10, 2, bytebuf);
> +	usleep_range(5000, 10000);
> +	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x10, 2, bytebuf);
> +	errh = bytebuf[1];
> +
> +	if (errh & 0x80) {
> +		errl = bytebuf[0];
> +		errh = (errh & 0x7f) << 8;
> +		errl = errh + errl;
> +	}
> +
> +	dev_err(dev, " Err of Lane = %d\n", errl);
> +	return errl;
> +}
> +
> +static void sp_lt_finish(struct anx78xx *anx78xx, u8 temp_value)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x02, 1, &temp_value);
> +	if ((temp_value & 0x07) == 0x07) {
> +		/*
> +		 * if there is link error,
> +		 * adjust pre-emphsis to check error again.
> +		 * If there is no error,keep the setting,
> +		 * otherwise use 400mv0db
> +		 */
> +		if (!sp.tx_test_lt) {
> +			if (sp_tx_link_err_check(anx78xx)) {
> +				sp_read_reg(anx78xx, TX_P0,
> +					SP_TX_LT_SET_REG, &temp_value);
> +				if (!(temp_value & MAX_PRE_REACH)) {
> +					sp_write_reg(anx78xx, TX_P0,
> +						SP_TX_LT_SET_REG,
> +						(temp_value + 0x08));
> +					if (sp_tx_link_err_check(anx78xx))
> +						sp_write_reg(anx78xx, TX_P0,
> +						SP_TX_LT_SET_REG,
> +						temp_value);
> +				}
> +			}
> +
> +			sp_read_reg(anx78xx, TX_P0,
> +				SP_TX_LINK_BW_SET_REG, &temp_value);

Use sp_tx_get_link_bw.

> +			if (temp_value == sp.changed_bandwidth) {
> +				dev_dbg(dev, "LT succeed, bw: %.2x",
> +					(u16) temp_value);
> +				dev_dbg(dev, "Lane0 Set: %.2x\n",
> +					(u16) sp_i2c_read_byte(anx78xx, TX_P0,
> +						SP_TX_LT_SET_REG));
> +				sp.tx_lt_state = LT_INIT;
> +				goto_next_system_state(anx78xx);
> +			} else {
> +				dev_dbg(dev, "cur:%.2x, per:%.2x\n",
> +					(u16)temp_value,
> +					(u16)sp.changed_bandwidth);
> +				sp.tx_lt_state = LT_ERROR;
> +			}
> +		} else {
> +			sp.tx_test_lt = 0;
> +			sp.tx_lt_state = LT_INIT;
> +			goto_next_system_state(anx78xx);
> +		}
> +	} else {
> +		dev_dbg(dev, "LANE0 Status error: %.2x\n",
> +			(u16)(temp_value & 0x07));
> +		sp.tx_lt_state = LT_ERROR;
> +	}
> +}
> +
> +static void sp_link_training(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 temp_value, return_value, c;
> +
> +	return_value = 1;
> +	dev_dbg(dev, "sp.tx_lt_state : %x\n",
> +			(int)sp.tx_lt_state);
> +	switch (sp.tx_lt_state) {
> +	case LT_INIT:
> +		sp_block_power_ctrl(anx78xx, SP_TX_PWR_VIDEO,
> +					SP_POWER_ON);
> +		sp_tx_video_mute(anx78xx, 1);
> +		sp_tx_enable_video_input(anx78xx, 0);
> +		sp.tx_lt_state++;
> +	/* fallthrough */
> +	case LT_WAIT_PLL_LOCK:
> +		if (!sp_tx_get_pll_lock_status(anx78xx)) {
> +			sp_read_reg(anx78xx, TX_P0, SP_TX_PLL_CTRL_REG,
> +				&temp_value);
> +
> +			temp_value |= PLL_RST;
> +			sp_write_reg(anx78xx, TX_P0, SP_TX_PLL_CTRL_REG,
> +				temp_value);
> +
> +			temp_value &= ~PLL_RST;
> +			sp_write_reg(anx78xx, TX_P0, SP_TX_PLL_CTRL_REG,
> +				temp_value);
> +
> +			dev_dbg(dev, "PLL not lock!\n");
> +		} else
> +			sp.tx_lt_state = LT_CHECK_LINK_BW;
> +		SP_BREAK(LT_WAIT_PLL_LOCK, sp.tx_lt_state);
> +	/* fallthrough */
> +	case LT_CHECK_LINK_BW:
> +		sp_tx_get_rx_bw(anx78xx, &temp_value);
> +		if (temp_value < sp.changed_bandwidth) {
> +			dev_dbg(dev, "****Over bandwidth****\n");
> +			sp.changed_bandwidth = temp_value;
> +		} else
> +			sp.tx_lt_state++;
> +	/* fallthrough */
> +	case LT_START:
> +		if (sp.tx_test_lt) {
> +			sp.changed_bandwidth = sp.tx_test_bw;
> +			sp_write_reg_and(anx78xx, TX_P2, SP_TX_VID_CTRL2_REG,
> +					0x8f);
> +		} else
> +			sp_write_reg(anx78xx, TX_P0, SP_TX_LT_SET_REG, 0x00);
> +
> +		sp_write_reg_and(anx78xx, TX_P0, SP_TX_ANALOG_PD_REG, ~CH0_PD);
> +
> +		sp_tx_config_ssc(anx78xx, SSC_DEP_4000PPM);
> +		sp_tx_set_link_bw(anx78xx, sp.changed_bandwidth);
> +		sp_tx_enhancemode_set(anx78xx);
> +
> +		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00, 0x00, 0x01, &c);
> +		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x06, 0x00, 0x01,
> +					&temp_value);
> +		if (c >= 0x12)
> +			temp_value &= 0xf8;
> +		else
> +			temp_value &= 0xfc;
> +		temp_value |= 0x01;
> +		sp_tx_aux_dpcdwrite_byte(anx78xx, 0x00, 0x06, 0x00, temp_value);
> +
> +
> +		sp_write_reg(anx78xx, TX_P0, LT_CTRL, SP_TX_LT_EN);
> +		sp.tx_lt_state = LT_WAITTING_FINISH;
> +	/* fallthrough */
> +	case LT_WAITTING_FINISH:
> +		/* here : waiting interrupt to change training state. */
> +		break;
> +
> +	case LT_ERROR:
> +		sp_write_reg_or(anx78xx, TX_P2, RST_CTRL2, SERDES_FIFO_RST);
> +		msleep(20);
> +		sp_write_reg_and(anx78xx, TX_P2, RST_CTRL2, (~SERDES_FIFO_RST));
> +		dev_err(dev, "LT ERROR Status: SERDES FIFO reset.");
> +		redo_cur_system_state(anx78xx);
> +		sp.tx_lt_state = LT_INIT;
> +		break;
> +
> +	case LT_FINISH:
> +		sp_lt_finish(anx78xx, temp_value);
> +		break;
> +	default:
> +		break;
> +	}
> +
> +}
> +/******************End Link training process********************/
> +
> +/******************Start Output video process********************/
> +static void sp_tx_set_colorspace(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 color_space;
> +
> +	if (sp.down_sample_en) {
> +		sp_read_reg(anx78xx, RX_P1, HDMI_RX_AVI_DATA00_REG,
> +			&color_space);
> +		color_space &= 0x60;
> +		if (color_space == 0x20) {
> +			dev_dbg(dev, "YCbCr4:2:2 ---> PASS THROUGH.\n");
> +			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL6_REG, 0x00);
> +			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL5_REG, 0x00);
> +			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL2_REG, 0x11);
> +		} else if (color_space == 0x40) {
> +			dev_dbg(dev, "YCbCr4:4:4 ---> YCbCr4:2:2\n");
> +			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL6_REG, 0x41);
> +			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL5_REG, 0x00);
> +			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL2_REG, 0x12);
> +		} else if (color_space == 0x00) {
> +			dev_dbg(dev, "RGB4:4:4 ---> YCbCr4:2:2\n");
> +			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL6_REG, 0x41);
> +			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL5_REG, 0x83);
> +			sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL2_REG, 0x10);
> +		}
> +	} else {
> +		sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL6_REG, 0x00);
> +		sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL5_REG, 0x00);
> +	}
> +}
> +
> +static void sp_tx_avi_setup(struct anx78xx *anx78xx)
> +{
> +	u8 c;
> +	int i;
> +
> +	for (i = 0; i < 13; i++) {
> +		sp_read_reg(anx78xx, RX_P1, (HDMI_RX_AVI_DATA00_REG + i), &c);
> +		sp.tx_packet_avi.avi_data[i] = c;
> +	}
> +}
> +
> +static void sp_tx_load_packet(struct anx78xx *anx78xx,
> +			enum packets_type type)
> +{
> +	int i;
> +	u8 c;
> +
> +	switch (type) {
> +	case AVI_PACKETS:
> +		sp_write_reg(anx78xx, TX_P2, SP_TX_AVI_TYPE, 0x82);
> +		sp_write_reg(anx78xx, TX_P2, SP_TX_AVI_VER, 0x02);
> +		sp_write_reg(anx78xx, TX_P2, SP_TX_AVI_LEN, 0x0d);
> +
> +		for (i = 0; i < 13; i++) {
> +			sp_write_reg(anx78xx, TX_P2, SP_TX_AVI_DB0 + i,
> +					sp.tx_packet_avi.avi_data[i]);
> +		}
> +
> +		break;
> +
> +	case SPD_PACKETS:
> +		sp_write_reg(anx78xx, TX_P2, SP_TX_SPD_TYPE, 0x83);
> +		sp_write_reg(anx78xx, TX_P2, SP_TX_SPD_VER, 0x01);
> +		sp_write_reg(anx78xx, TX_P2, SP_TX_SPD_LEN, 0x19);
> +
> +		for (i = 0; i < 25; i++) {
> +			sp_write_reg(anx78xx, TX_P2, SP_TX_SPD_DB0 + i,
> +					sp.tx_packet_spd.spd_data[i]);
> +		}
> +
> +		break;
> +
> +	case VSI_PACKETS:
> +		sp_write_reg(anx78xx, TX_P2, SP_TX_MPEG_TYPE, 0x81);
> +		sp_write_reg(anx78xx, TX_P2, SP_TX_MPEG_VER, 0x01);
> +		sp_read_reg(anx78xx, RX_P1, HDMI_RX_MPEG_LEN_REG, &c);
> +		sp_write_reg(anx78xx, TX_P2, SP_TX_MPEG_LEN, c);
> +
> +		for (i = 0; i < 10; i++) {
> +			sp_write_reg(anx78xx, TX_P2, SP_TX_MPEG_DB0 + i,
> +					sp.tx_packet_mpeg.mpeg_data[i]);
> +		}
> +
> +		break;
> +	case MPEG_PACKETS:
> +		sp_write_reg(anx78xx, TX_P2, SP_TX_MPEG_TYPE, 0x85);
> +		sp_write_reg(anx78xx, TX_P2, SP_TX_MPEG_VER, 0x01);
> +		sp_write_reg(anx78xx, TX_P2, SP_TX_MPEG_LEN, 0x0d);
> +
> +		for (i = 0; i < 10; i++) {
> +			sp_write_reg(anx78xx, TX_P2, SP_TX_MPEG_DB0 + i,
> +					sp.tx_packet_mpeg.mpeg_data[i]);
> +		}
> +
> +		break;
> +	case AUDIF_PACKETS:
> +		sp_write_reg(anx78xx, TX_P2, SP_TX_AUD_TYPE, 0x84);
> +		sp_write_reg(anx78xx, TX_P2, SP_TX_AUD_VER, 0x01);
> +		sp_write_reg(anx78xx, TX_P2, SP_TX_AUD_LEN, 0x0a);
> +		for (i = 0; i < 10; i++) {
> +			sp_write_reg(anx78xx, TX_P2, SP_TX_AUD_DB0 + i,
> +					sp.tx_audioinfoframe.pb_byte[i]);
> +		}
> +
> +		break;
> +
> +	default:
> +		break;
> +	}
> +}
> +
> +static void sp_tx_config_packets(struct anx78xx *anx78xx,
> +				enum packets_type type)
> +{
> +	u8 c;
> +
> +	switch (type) {
> +	case AVI_PACKETS:
> +
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
> +		c &= ~AVI_IF_EN;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
> +		sp_tx_load_packet(anx78xx, AVI_PACKETS);
> +
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
> +		c |= AVI_IF_UD;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
> +
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
> +		c |= AVI_IF_EN;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
> +
> +		break;
> +
> +	case SPD_PACKETS:
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
> +		c &= ~SPD_IF_EN;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
> +		sp_tx_load_packet(anx78xx, SPD_PACKETS);
> +
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
> +		c |= SPD_IF_UD;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
> +
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
> +		c |=  SPD_IF_EN;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
> +
> +		break;
> +
> +	case VSI_PACKETS:
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
> +		c &= ~MPEG_IF_EN;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
> +
> +		sp_tx_load_packet(anx78xx, VSI_PACKETS);
> +
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
> +		c |= MPEG_IF_UD;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
> +
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
> +		c |= MPEG_IF_EN;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
> +
> +		break;
> +	case MPEG_PACKETS:
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
> +		c &= ~MPEG_IF_EN;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
> +
> +
> +		sp_tx_load_packet(anx78xx, MPEG_PACKETS);
> +
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
> +		c |= MPEG_IF_UD;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
> +
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
> +		c |= MPEG_IF_EN;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
> +
> +		break;
> +	case AUDIF_PACKETS:
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
> +		c &= ~AUD_IF_EN;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
> +
> +
> +		sp_tx_load_packet(anx78xx, AUDIF_PACKETS);
> +
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
> +		c |= AUD_IF_UP;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
> +
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, &c);
> +		c |= AUD_IF_EN;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_PKT_EN_REG, c);
> +
> +		break;
> +
> +	default:
> +		break;
> +	}
> +
> +}
> +
> +static void sp_config_video_output(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 temp_value;
> +
> +	switch (sp.tx_vo_state) {
> +	default:
> +	case VO_WAIT_VIDEO_STABLE:
> +		sp_read_reg(anx78xx, RX_P0, HDMI_RX_SYS_STATUS_REG,
> +			&temp_value);
> +		if ((temp_value & (TMDS_DE_DET | TMDS_CLOCK_DET)) == 0x03) {
> +			sp_tx_bw_lc_sel(anx78xx, sp_tx_pclk_calc(anx78xx));
> +			sp_tx_enable_video_input(anx78xx, 0);
> +			sp_tx_avi_setup(anx78xx);
> +			sp_tx_config_packets(anx78xx, AVI_PACKETS);
> +			sp_tx_set_colorspace(anx78xx);
> +			sp_tx_lvttl_bit_mapping(anx78xx);
> +			if (sp_i2c_read_byte(anx78xx, RX_P0, RX_PACKET_REV_STA)
> +			& VSI_RCVD)
> +				sp_hdmi_rx_new_vsi_int(anx78xx);
> +			sp_tx_enable_video_input(anx78xx, 1);
> +			sp.tx_vo_state = VO_WAIT_TX_VIDEO_STABLE;
> +		} else
> +			dev_dbg(dev, "HDMI input video not stable!\n");
> +		SP_BREAK(VO_WAIT_VIDEO_STABLE, sp.tx_vo_state);
> +	/* fallthrough */
> +	case VO_WAIT_TX_VIDEO_STABLE:
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_SYS_CTRL2_REG, &temp_value);
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_SYS_CTRL2_REG, temp_value);
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_SYS_CTRL2_REG, &temp_value);
> +		if (temp_value & CHA_STA)
> +			dev_dbg(dev, "Stream clock not stable!\n");
> +		else {
> +			sp_read_reg(anx78xx, TX_P0, SP_TX_SYS_CTRL3_REG,
> +				&temp_value);
> +			sp_write_reg(anx78xx, TX_P0, SP_TX_SYS_CTRL3_REG,
> +				temp_value);
> +			sp_read_reg(anx78xx, TX_P0, SP_TX_SYS_CTRL3_REG,
> +				&temp_value);
> +			if (!(temp_value & STRM_VALID))
> +				dev_err(dev, "video stream not valid!\n");
> +			else
> +				sp.tx_vo_state = VO_CHECK_VIDEO_INFO;
> +		}
> +		SP_BREAK(VO_WAIT_TX_VIDEO_STABLE, sp.tx_vo_state);
> +	/* fallthrough */
> +	case VO_CHECK_VIDEO_INFO:
> +		if (!sp_tx_bw_lc_sel(anx78xx, sp_tx_pclk_calc(anx78xx)))
> +			sp.tx_vo_state++;
> +		else
> +			sp_tx_set_sys_state(anx78xx, STATE_LINK_TRAINING);
> +		SP_BREAK(VO_CHECK_VIDEO_INFO, sp.tx_vo_state);
> +	/* fallthrough */
> +	case VO_FINISH:
> +		sp_block_power_ctrl(anx78xx, SP_TX_PWR_AUDIO,
> +				SP_POWER_DOWN);
> +		hdmi_rx_mute_video(anx78xx, 0);
> +		sp_tx_video_mute(anx78xx, 0);
> +		sp_tx_show_information(anx78xx);
> +		goto_next_system_state(anx78xx);
> +		break;
> +	}
> +}
> +/******************End Output video process********************/
> +
> +/******************Start HDCP process********************/
> +static inline void sp_tx_hdcp_encryption_disable(struct anx78xx *anx78xx)
> +{
> +	sp_write_reg_and(anx78xx, TX_P0, TX_HDCP_CTRL0, ~ENC_EN);
> +}
> +
> +static inline void sp_tx_hdcp_encryption_enable(struct anx78xx *anx78xx)
> +{
> +	sp_write_reg_or(anx78xx, TX_P0, TX_HDCP_CTRL0, ENC_EN);
> +}
> +
> +static void sp_tx_hw_hdcp_enable(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 c;
> +
> +	sp_write_reg_and(anx78xx, TX_P0, TX_HDCP_CTRL0,
> +			~ENC_EN & ~HARD_AUTH_EN);
> +	sp_write_reg_or(anx78xx, TX_P0, TX_HDCP_CTRL0,
> +			HARD_AUTH_EN | BKSV_SRM_PASS | KSVLIST_VLD | ENC_EN);
> +
> +	sp_read_reg(anx78xx, TX_P0, TX_HDCP_CTRL0, &c);
> +	dev_dbg(dev, "TX_HDCP_CTRL0 = %.2x\n", (u16)c);
> +	sp_write_reg(anx78xx, TX_P0, SP_TX_WAIT_R0_TIME, 0xb0);
> +	sp_write_reg(anx78xx, TX_P0, SP_TX_WAIT_KSVR_TIME, 0xc8);
> +
> +	dev_dbg(dev, "Hardware HDCP is enabled.\n");
> +}
> +
> +static void sp_hdcp_process(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	switch (sp.hcdp_state) {
> +	case HDCP_CAPABLE_CHECK:
> +		sp.ds_vid_stb_cntr = 0;
> +		sp.hdcp_fail_count = 0;
> +		if (is_anx_dongle(anx78xx))
> +			sp.hcdp_state = HDCP_WAITTING_VID_STB;
> +		else
> +			sp.hcdp_state = HDCP_HW_ENABLE;
> +		if (sp.block_en == 0) {
> +			if (sp_hdcp_cap_check(anx78xx) == 0)
> +				sp.hcdp_state = HDCP_NOT_SUPPORT;
> +		}
> +		/*
> +		 * Just for debug, pin: P2-2
> +		 * There is a switch to disable/enable HDCP.
> +		 */
> +		sp.hcdp_state = HDCP_NOT_SUPPORT;
> +		/*****************************************/
> +		SP_BREAK(HDCP_CAPABLE_CHECK, sp.hcdp_state);
> +	/* fallthrough */
> +	case HDCP_WAITTING_VID_STB:
> +		msleep(100);
> +		sp.hcdp_state = HDCP_HW_ENABLE;
> +		SP_BREAK(HDCP_WAITTING_VID_STB, sp.hcdp_state);
> +	/* fallthrough */
> +	case HDCP_HW_ENABLE:
> +		sp_tx_video_mute(anx78xx, 1);
> +		sp_tx_clean_hdcp_status(anx78xx);
> +		sp_block_power_ctrl(anx78xx, SP_TX_PWR_HDCP,
> +				SP_POWER_DOWN);
> +		msleep(20);
> +		sp_block_power_ctrl(anx78xx, SP_TX_PWR_HDCP, SP_POWER_ON);
> +		sp_write_reg(anx78xx, TX_P2, SP_COMMON_INT_MASK2, 0x01);
> +		msleep(50);
> +		sp_tx_hw_hdcp_enable(anx78xx);
> +		sp.hcdp_state = HDCP_WAITTING_FINISH;
> +	/* fallthrough */
> +	case HDCP_WAITTING_FINISH:
> +		break;
> +	case HDCP_FINISH:
> +		sp_tx_hdcp_encryption_enable(anx78xx);
> +		 hdmi_rx_mute_video(anx78xx, 0);
> +		sp_tx_video_mute(anx78xx, 0);
> +		goto_next_system_state(anx78xx);
> +		sp.hcdp_state = HDCP_CAPABLE_CHECK;
> +		dev_dbg(dev, "@@@@@@@hdcp_auth_pass@@@@@@\n");
> +		break;
> +	case HDCP_FAILE:
> +		if (sp.hdcp_fail_count > 5) {
> +			sp_vbus_power_off(anx78xx);
> +			reg_hardware_reset(anx78xx);
> +			sp.hcdp_state = HDCP_CAPABLE_CHECK;
> +			sp.hdcp_fail_count = 0;
> +			dev_dbg(dev, "*********hdcp_auth_failed*********\n");
> +		} else {
> +			sp.hdcp_fail_count++;
> +			sp.hcdp_state = HDCP_WAITTING_VID_STB;
> +		}
> +		break;
> +	default:
> +	case HDCP_NOT_SUPPORT:
> +		dev_dbg(dev, "Sink is not capable HDCP\n");
> +		sp_block_power_ctrl(anx78xx, SP_TX_PWR_HDCP,
> +			SP_POWER_DOWN);
> +		sp_tx_video_mute(anx78xx, 0);
> +		goto_next_system_state(anx78xx);
> +		sp.hcdp_state = HDCP_CAPABLE_CHECK;
> +		break;
> +	}
> +}
> +/******************End HDCP process********************/
> +
> +/******************Start Audio process********************/
> +static void sp_tx_audioinfoframe_setup(struct anx78xx *anx78xx)
> +{
> +	int i;
> +	u8 c;
> +
> +	sp_read_reg(anx78xx, RX_P1, HDMI_RX_AUDIO_TYPE_REG, &c);
> +	sp.tx_audioinfoframe.type = c;
> +	sp_read_reg(anx78xx, RX_P1, HDMI_RX_AUDIO_VER_REG, &c);
> +	sp.tx_audioinfoframe.version = c;
> +	sp_read_reg(anx78xx, RX_P1, HDMI_RX_AUDIO_LEN_REG, &c);
> +	sp.tx_audioinfoframe.length = c;
> +
> +	for (i = 0; i < 11; i++) {
> +		sp_read_reg(anx78xx, RX_P1, (HDMI_RX_AUDIO_DATA00_REG + i), &c);
> +		sp.tx_audioinfoframe.pb_byte[i] = c;
> +	}
> +}
> +
> +static void sp_tx_enable_audio_output(struct anx78xx *anx78xx, u8 benable)
> +{
> +	u8 c;
> +
> +	sp_read_reg(anx78xx, TX_P0, SP_TX_AUD_CTRL, &c);
> +	if (benable) {
> +		if (c & AUD_EN) {
> +			c &= ~AUD_EN;
> +			sp_write_reg(anx78xx, TX_P0, SP_TX_AUD_CTRL, c);
> +		}
> +		sp_tx_audioinfoframe_setup(anx78xx);
> +		sp_tx_config_packets(anx78xx, AUDIF_PACKETS);
> +
> +		c |= AUD_EN;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_AUD_CTRL, c);
> +
> +	} else {
> +		c &= ~AUD_EN;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_AUD_CTRL, c);
> +		sp_write_reg_and(anx78xx, TX_P0, SP_TX_PKT_EN_REG, ~AUD_IF_EN);
> +	}
> +}
> +
> +static void sp_tx_config_audio(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 c;
> +	int i;
> +	ulong M_AUD, LS_Clk = 0;
> +	ulong AUD_Freq = 0;
> +
> +	dev_dbg(dev, "**Config audio **\n");
> +	sp_block_power_ctrl(anx78xx, SP_TX_PWR_AUDIO, SP_POWER_ON);
> +	sp_read_reg(anx78xx, RX_P0, 0xCA, &c);
> +
> +	switch (c & 0x0f) {
> +	case 0x00:
> +		AUD_Freq = 44.1;

You are assigning a float to an int...

> +		break;
> +	case 0x02:
> +		AUD_Freq = 48;
> +		break;
> +	case 0x03:
> +		AUD_Freq = 32;
> +		break;
> +	case 0x08:
> +		AUD_Freq = 88.2;
> +		break;
> +	case 0x0a:
> +		AUD_Freq = 96;
> +		break;
> +	case 0x0c:
> +		AUD_Freq = 176.4;
> +		break;
> +	case 0x0e:
> +		AUD_Freq = 192;
> +		break;
> +	default:
> +		break;
> +	}
> +
> +
> +	switch (sp_tx_get_link_bw(anx78xx)) {
> +	case LINK_1P62G:
> +		LS_Clk = 162000;
> +		break;
> +	case LINK_2P7G:
> +		LS_Clk = 270000;
> +		break;
> +	case LINK_5P4G:
> +		LS_Clk = 540000;
> +		break;
> +	case LINK_6P75G:
> +		LS_Clk = 675000;
> +		break;
> +	default:
> +		break;
> +	}
> +
> +	dev_dbg(dev, "AUD_Freq = %ld , LS_CLK = %ld\n", AUD_Freq, LS_Clk);
> +
> +	M_AUD = ((512 * AUD_Freq) / LS_Clk) * 32768;

If you look at the numbers, M_AUD will always be = 0.

> +	M_AUD = M_AUD + 0x05;
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_AUD_INTERFACE_CTRL4, (M_AUD & 0xff));
> +	M_AUD = M_AUD >> 8;
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_AUD_INTERFACE_CTRL5, (M_AUD & 0xff));
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_AUD_INTERFACE_CTRL6, 0x00);
> +
> +	sp_write_reg_and(anx78xx, TX_P1, SP_TX_AUD_INTERFACE_CTRL0,
> +			(u8)~AUD_INTERFACE_DISABLE);
> +
> +	sp_write_reg_or(anx78xx, TX_P1, SP_TX_AUD_INTERFACE_CTRL2,
> +			M_AUD_ADJUST_ST);
> +
> +	sp_read_reg(anx78xx, RX_P0, HDMI_STATUS, &c);
> +	if (c & HDMI_AUD_LAYOUT)
> +		sp_write_reg_or(anx78xx, TX_P2, SP_TX_AUD_CH_NUM_REG5,
> +				CH_NUM_8 | AUD_LAYOUT);
> +	else
> +		sp_write_reg_and(anx78xx, TX_P2, SP_TX_AUD_CH_NUM_REG5,
> +				(u8)(~CH_NUM_8) & (~AUD_LAYOUT));
> +
> +	/* transfer audio chaneel status from HDMI Rx to Slinmport Tx */
> +	for (i = 0; i < 5; i++) {
> +		sp_read_reg(anx78xx, RX_P0, (HDMI_RX_AUD_IN_CH_STATUS1_REG + i),
> +			 &c);
> +		sp_write_reg(anx78xx, TX_P2, (SP_TX_AUD_CH_STATUS_REG1 + i), c);
> +	}
> +
> +	/* enable audio */
> +	sp_tx_enable_audio_output(anx78xx, 1);
> +}
> +
> +static void sp_config_audio_output(struct anx78xx *anx78xx)
> +{
> +	static u8 count;
> +
> +	switch (sp.tx_ao_state) {
> +	default:
> +	case AO_INIT:
> +	case AO_CTS_RCV_INT:
> +	case AO_AUDIO_RCV_INT:
> +		if (!(sp_i2c_read_byte(anx78xx, RX_P0, HDMI_STATUS)
> +		    & HDMI_MODE)) {
> +			sp.tx_ao_state = AO_INIT;
> +			goto_next_system_state(anx78xx);
> +		}
> +		break;
> +	case AO_RCV_INT_FINISH:
> +		if (count++ > 2)
> +			sp.tx_ao_state = AO_OUTPUT;
> +		else
> +			sp.tx_ao_state = AO_INIT;
> +		SP_BREAK(AO_INIT, sp.tx_ao_state);
> +	/* fallthrough */
> +	case AO_OUTPUT:
> +		count = 0;
> +		sp.tx_ao_state = AO_INIT;
> +		 hdmi_rx_mute_audio(anx78xx, 0);
> +		sp_tx_config_audio(anx78xx);
> +		goto_next_system_state(anx78xx);
> +		break;
> +	}
> +}
> +/******************End Audio process********************/
> +
> +void sp_initialization(struct anx78xx *anx78xx)
> +{
> +	/* Waitting Hot plug event! */
> +	if (!(sp.common_int_status.common_int[3] & PLUG))
> +		return;
> +
> +	sp.read_edid_flag = 0;
> +
> +	/* Power on all modules */
> +	sp_write_reg(anx78xx, TX_P2, SP_POWERD_CTRL_REG, 0x00);
> +	/* Driver Version */
> +	sp_write_reg(anx78xx, TX_P1, FW_VER_REG, FW_VERSION);
> +	hdmi_rx_initialization(anx78xx);
> +	sp_tx_initialization(anx78xx);
> +	msleep(200);
> +	goto_next_system_state(anx78xx);
> +}
> +
> +static void sp_hdcp_external_ctrl_flag_monitor(struct anx78xx *anx78xx)
> +{
> +	static u8 cur_flag;
> +
> +	if (sp.block_en != cur_flag) {
> +		cur_flag = sp.block_en;
> +		system_state_change_with_case(anx78xx, STATE_HDCP_AUTH);
> +	}
> +}
> +
> +static void sp_state_process(struct anx78xx *anx78xx)
> +{
> +	switch (sp.tx_system_state) {
> +	case STATE_WAITTING_CABLE_PLUG:
> +		sp_waiting_cable_plug_process(anx78xx);
> +		SP_BREAK(STATE_WAITTING_CABLE_PLUG, sp.tx_system_state);
> +	/* fallthrough */
> +	case STATE_SP_INITIALIZED:
> +		sp_initialization(anx78xx);
> +		SP_BREAK(STATE_SP_INITIALIZED, sp.tx_system_state);
> +	/* fallthrough */
> +	case STATE_SINK_CONNECTION:
> +		sp_sink_connection(anx78xx);
> +		SP_BREAK(STATE_SINK_CONNECTION, sp.tx_system_state);
> +	/* fallthrough */
> +	case STATE_PARSE_EDID:
> +		sp_edid_process(anx78xx);
> +		SP_BREAK(STATE_PARSE_EDID, sp.tx_system_state);
> +	/* fallthrough */
> +	case STATE_LINK_TRAINING:
> +		sp_link_training(anx78xx);
> +		SP_BREAK(STATE_LINK_TRAINING, sp.tx_system_state);
> +	/* fallthrough */
> +	case STATE_VIDEO_OUTPUT:
> +		sp_config_video_output(anx78xx);
> +		SP_BREAK(STATE_VIDEO_OUTPUT, sp.tx_system_state);
> +	/* fallthrough */
> +	case STATE_HDCP_AUTH:
> +		sp_hdcp_process(anx78xx);
> +		SP_BREAK(STATE_HDCP_AUTH, sp.tx_system_state);
> +	/* fallthrough */
> +	case STATE_AUDIO_OUTPUT:
> +		sp_config_audio_output(anx78xx);
> +		SP_BREAK(STATE_AUDIO_OUTPUT, sp.tx_system_state);
> +	/* fallthrough */
> +	case STATE_PLAY_BACK:
> +		SP_BREAK(STATE_PLAY_BACK, sp.tx_system_state);
> +	/* fallthrough */
> +	default:
> +		break;
> +	}
> +}
> +
> +/******************Start INT process********************/
> +static void sp_tx_int_rec(struct anx78xx *anx78xx)
> +{
> +	sp_read_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1,
> +		&sp.common_int_status.common_int[0]);
> +	sp_write_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1,
> +		sp.common_int_status.common_int[0]);
> +
> +	sp_read_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1 + 1,
> +		&sp.common_int_status.common_int[1]);
> +	sp_write_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1 + 1,
> +		sp.common_int_status.common_int[1]);
> +
> +	sp_read_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1 + 2,
> +		&sp.common_int_status.common_int[2]);
> +	sp_write_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1 + 2,
> +		sp.common_int_status.common_int[2]);
> +
> +	sp_read_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1 + 3,
> +		&sp.common_int_status.common_int[3]);
> +	sp_write_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1 + 3,
> +		sp.common_int_status.common_int[3]);
> +
> +	sp_read_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1 + 6,
> +		&sp.common_int_status.common_int[4]);
> +	sp_write_reg(anx78xx, TX_P2, SP_COMMON_INT_STATUS1 + 6,
> +		sp.common_int_status.common_int[4]);
> +}
> +
> +static void sp_hdmi_rx_int_rec(struct anx78xx *anx78xx)
> +{
> +	 sp_read_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS1_REG,
> +		&sp.hdmi_rx_int_status.hdmi_rx_int[0]);
> +	 sp_write_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS1_REG,
> +		sp.hdmi_rx_int_status.hdmi_rx_int[0]);
> +	 sp_read_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS2_REG,
> +		&sp.hdmi_rx_int_status.hdmi_rx_int[1]);
> +	 sp_write_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS2_REG,
> +		sp.hdmi_rx_int_status.hdmi_rx_int[1]);
> +	 sp_read_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS3_REG,
> +		&sp.hdmi_rx_int_status.hdmi_rx_int[2]);
> +	 sp_write_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS3_REG,
> +		sp.hdmi_rx_int_status.hdmi_rx_int[2]);
> +	 sp_read_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS4_REG,
> +		&sp.hdmi_rx_int_status.hdmi_rx_int[3]);
> +	 sp_write_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS4_REG,
> +		sp.hdmi_rx_int_status.hdmi_rx_int[3]);
> +	 sp_read_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS5_REG,
> +		&sp.hdmi_rx_int_status.hdmi_rx_int[4]);
> +	 sp_write_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS5_REG,
> +		sp.hdmi_rx_int_status.hdmi_rx_int[4]);
> +	 sp_read_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS6_REG,
> +		&sp.hdmi_rx_int_status.hdmi_rx_int[5]);
> +	 sp_write_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS6_REG,
> +		sp.hdmi_rx_int_status.hdmi_rx_int[5]);
> +	 sp_read_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS7_REG,
> +		&sp.hdmi_rx_int_status.hdmi_rx_int[6]);
> +	 sp_write_reg(anx78xx, RX_P0, HDMI_RX_INT_STATUS7_REG,
> +		sp.hdmi_rx_int_status.hdmi_rx_int[6]);
> +}
> +
> +static void sp_int_rec(struct anx78xx *anx78xx)
> +{
> +	sp_tx_int_rec(anx78xx);
> +	sp_hdmi_rx_int_rec(anx78xx);
> +}
> +/******************End INT process********************/
> +
> +/******************Start task process********************/
> +static void sp_tx_pll_changed_int_handler(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	if (sp.tx_system_state >= STATE_LINK_TRAINING) {
> +		if (!sp_tx_get_pll_lock_status(anx78xx)) {
> +			dev_dbg(dev, "PLL:PLL not lock!\n");
> +			sp_tx_set_sys_state(anx78xx, STATE_LINK_TRAINING);
> +		}
> +	}
> +}
> +
> +static void sp_tx_hdcp_link_chk_fail_handler(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	system_state_change_with_case(anx78xx, STATE_HDCP_AUTH);
> +
> +	dev_dbg(dev, "hdcp_link_chk_fail:HDCP Sync lost!\n");
> +}
> +
> +static void sp_tx_phy_auto_test(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 b_sw;
> +	u8 c1;
> +	u8 bytebuf[16];
> +	u8 link_bw;
> +
> +	/* DPCD 0x219 TEST_LINK_RATE */
> +	sp_tx_aux_dpcdread_bytes(anx78xx, 0x0, 0x02, 0x19, 1, bytebuf);
> +	dev_dbg(dev, "DPCD:0x00219 = %.2x\n", (u16)bytebuf[0]);
> +	switch (bytebuf[0]) {
> +	case 0x06:
> +	case 0x0A:
> +	case 0x14:
> +	case 0x19:
> +		sp_tx_set_link_bw(anx78xx, bytebuf[0]);
> +		sp.tx_test_bw = bytebuf[0];
> +		break;
> +	default:
> +		sp_tx_set_link_bw(anx78xx, 0x19);
> +		sp.tx_test_bw = 0x19;
> +		break;
> +	}
> +
> +
> +	/* DPCD 0x248 PHY_TEST_PATTERN */
> +	sp_tx_aux_dpcdread_bytes(anx78xx, 0x0, 0x02, 0x48, 1, bytebuf);
> +	dev_dbg(dev, "DPCD:0x00248 = %.2x\n", (u16)bytebuf[0]);
> +	switch (bytebuf[0]) {
> +	case 0:
> +		break;
> +	case 1:
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_TRAINING_PTN_SET_REG, 0x04);
> +		break;
> +	case 2:
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_TRAINING_PTN_SET_REG, 0x08);
> +		break;
> +	case 3:
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_TRAINING_PTN_SET_REG, 0x0c);
> +		break;
> +	case 4:
> +		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x50, 0xa,
> +			bytebuf);
> +		sp_write_reg(anx78xx, TX_P1, 0x80, bytebuf[0]);
> +		sp_write_reg(anx78xx, TX_P1, 0x81, bytebuf[1]);
> +		sp_write_reg(anx78xx, TX_P1, 0x82, bytebuf[2]);
> +		sp_write_reg(anx78xx, TX_P1, 0x83, bytebuf[3]);
> +		sp_write_reg(anx78xx, TX_P1, 0x84, bytebuf[4]);
> +		sp_write_reg(anx78xx, TX_P1, 0x85, bytebuf[5]);
> +		sp_write_reg(anx78xx, TX_P1, 0x86, bytebuf[6]);
> +		sp_write_reg(anx78xx, TX_P1, 0x87, bytebuf[7]);
> +		sp_write_reg(anx78xx, TX_P1, 0x88, bytebuf[8]);
> +		sp_write_reg(anx78xx, TX_P1, 0x89, bytebuf[9]);
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_TRAINING_PTN_SET_REG, 0x30);
> +		break;
> +	case 5:
> +		sp_write_reg(anx78xx, TX_P0, 0xA9, 0x00);
> +		sp_write_reg(anx78xx, TX_P0, 0xAA, 0x01);
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_TRAINING_PTN_SET_REG, 0x14);
> +		break;
> +	}
> +
> +	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00, 0x03, 1, bytebuf);
> +	dev_dbg(dev, "DPCD:0x00003 = %.2x\n", (u16)bytebuf[0]);
> +	switch (bytebuf[0] & 0x01) {
> +	case 0:
> +		sp_tx_spread_enable(anx78xx, 0);
> +		break;
> +	case 1:
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_LINK_BW_SET_REG, &c1);

Use sp_tx_get_link_bw.

> +		switch (c1) {
> +		case 0x06:
> +			link_bw = 0x06;
> +			break;
> +		case 0x0a:
> +			link_bw = 0x0a;
> +			break;
> +		case 0x14:
> +			link_bw = 0x14;
> +			break;
> +		case 0x19:
> +			link_bw = 0x19;
> +			break;

Merge these cases together, then use link_bw = c1;

> +		default:
> +			link_bw = 0x00;
> +			break;
> +		}
> +		sp_tx_config_ssc(anx78xx, SSC_DEP_4000PPM);
> +		break;
> +	}
> +
> +	/* get swing and emphasis adjust request */
> +	sp_read_reg(anx78xx, TX_P0, 0xA3, &b_sw);
> +
> +	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x06, 1, bytebuf);
> +	dev_dbg(dev, "DPCD:0x00206 = %.2x\n", (u16)bytebuf[0]);
> +	c1 = bytebuf[0] & 0x0f;
> +	switch (c1) {
> +	case 0x00:
> +		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x00);
> +		break;
> +	case 0x01:
> +		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x01);
> +		break;
> +	case 0x02:
> +		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x02);
> +		break;
> +	case 0x03:
> +		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x03);
> +		break;
> +	case 0x04:
> +		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x08);
> +		break;
> +	case 0x05:
> +		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x09);
> +		break;
> +	case 0x06:
> +		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x0a);
> +		break;
> +	case 0x08:
> +		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x10);
> +		break;
> +	case 0x09:
> +		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x11);
> +		break;
> +	case 0x0c:
> +		sp_write_reg(anx78xx, TX_P0, 0xA3, (b_sw & ~0x1b) | 0x18);
> +		break;
> +	default:
> +		break;
> +	}
> +}
> +
> +static void sp_hpd_irq_process(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 c, c1;
> +	u8 test_vector;
> +	u8 data_buf[6];
> +
> +	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x00, 6, data_buf);
> +	dev_dbg(dev, "+++++++++++++Get HPD IRQ %x\n", (int)data_buf[1]);
> +
> +	if (data_buf[1] != 0)
> +		sp_tx_aux_dpcdwrite_bytes(anx78xx, 0x00, 0x02,
> +			DPCD_SERVICE_IRQ_VECTOR, 1, &(data_buf[1]));
> +
> +	/* HDCP IRQ */
> +	if (data_buf[1] & CP_IRQ) {
> +		if (sp.hcdp_state > HDCP_WAITTING_FINISH
> +			|| sp.tx_system_state > STATE_HDCP_AUTH) {
> +			sp_tx_aux_dpcdread_bytes(anx78xx, 0x06, 0x80, 0x29, 1,
> +						&c1);
> +			if (c1 & 0x04) {
> +				system_state_change_with_case(anx78xx,
> +						STATE_HDCP_AUTH);
> +				dev_dbg(dev, "IRQ:_______HDCP Sync lost!\n");
> +			}
> +		}
> +	}
> +
> +	/* AUTOMATED TEST IRQ */
> +	if (data_buf[1] & TEST_IRQ) {
> +		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x18, 1,
> +				&test_vector);
> +
> +		if (test_vector & 0x01) {
> +			sp.tx_test_lt = 1;
> +
> +			sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x19, 1,
> +						&c);
> +			switch (c) {
> +			case 0x06:
> +			case 0x0A:
> +			case 0x14:
> +			case 0x19:
> +				sp_tx_set_link_bw(anx78xx, c);
> +				sp.tx_test_bw = c;
> +				break;
> +			default:
> +				sp_tx_set_link_bw(anx78xx, 0x19);
> +				sp.tx_test_bw = 0x19;
> +				break;
> +			}
> +
> +			dev_dbg(dev, " test_bw = %.2x\n", (u16)sp.tx_test_bw);
> +
> +			sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x60, 1,
> +						&c);
> +			c = c | TEST_ACK;
> +			sp_tx_aux_dpcdwrite_bytes(anx78xx, 0x00, 0x02, 0x60, 1,
> +						&c);
> +
> +			dev_dbg(dev, "Set TEST_ACK!\n");
> +			if (sp.tx_system_state >= STATE_LINK_TRAINING) {
> +				sp.tx_lt_state = LT_INIT;
> +				sp_tx_set_sys_state(anx78xx,
> +						STATE_LINK_TRAINING);
> +			}
> +			dev_dbg(dev, "IRQ:test-LT request!\n");
> +		}
> +
> +		if (test_vector & 0x02) {
> +			sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x60, 1,
> +						&c);
> +			c = c | TEST_ACK;
> +			sp_tx_aux_dpcdwrite_bytes(anx78xx, 0x00, 0x02, 0x60, 1,
> +						&c);
> +		}
> +		if (test_vector & 0x04) {
> +			if (sp.tx_system_state > STATE_PARSE_EDID)
> +				sp_tx_set_sys_state(anx78xx, STATE_PARSE_EDID);
> +			sp.tx_test_edid = 1;
> +			dev_dbg(dev, "Test EDID Requested!\n");
> +		}
> +
> +		if (test_vector & 0x08) {
> +			sp.tx_test_lt = 1;
> +
> +			sp_tx_phy_auto_test(anx78xx);
> +
> +			sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02, 0x60, 1,
> +						&c);
> +			c = c | 0x01;
> +			sp_tx_aux_dpcdwrite_bytes(anx78xx, 0x00, 0x02, 0x60, 1,
> +						&c);
> +		}
> +	}
> +
> +	if (sp.tx_system_state > STATE_LINK_TRAINING) {
> +		if (!(data_buf[4] & 0x01)
> +		|| ((data_buf[2] & (0x01 | 0x04)) != 0x05)) {
> +			sp_tx_set_sys_state(anx78xx, STATE_LINK_TRAINING);
> +			dev_dbg(dev, "INT:re-LT request!\n");
> +			return;
> +		}
> +
> +		dev_dbg(dev, "Lane align %x\n", (u16)data_buf[4]);
> +		dev_dbg(dev, "Lane clock recovery %x\n", (u16)data_buf[2]);
> +	}
> +}
> +
> +static void sp_tx_vsi_setup(struct anx78xx *anx78xx)
> +{
> +	u8 c;
> +	int i;
> +
> +	for (i = 0; i < 10; i++) {
> +		sp_read_reg(anx78xx, RX_P1, (HDMI_RX_MPEG_DATA00_REG + i), &c);
> +		sp.tx_packet_mpeg.mpeg_data[i] = c;
> +	}
> +}
> +
> +static void sp_tx_mpeg_setup(struct anx78xx *anx78xx)
> +{
> +	u8 c;
> +	int i;
> +
> +	for (i = 0; i < 10; i++) {
> +		sp_read_reg(anx78xx, RX_P1, (HDMI_RX_MPEG_DATA00_REG + i), &c);
> +		sp.tx_packet_mpeg.mpeg_data[i] = c;
> +	}
> +}
> +
> +static void sp_tx_auth_done_int_handler(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 bytebuf[2];
> +
> +	if (sp.hcdp_state > HDCP_HW_ENABLE
> +		&& sp.tx_system_state == STATE_HDCP_AUTH) {
> +		sp_read_reg(anx78xx, TX_P0, SP_TX_HDCP_STATUS, bytebuf);
> +		if (bytebuf[0] & SP_TX_HDCP_AUTH_PASS) {
> +			sp_tx_aux_dpcdread_bytes(anx78xx, 0x06, 0x80, 0x2A, 2,
> +						bytebuf);
> +			if ((bytebuf[1] & 0x08) || (bytebuf[0] & 0x80)) {
> +				dev_dbg(dev, "max cascade/devs exceeded!\n");
> +				sp_tx_hdcp_encryption_disable(anx78xx);
> +			} else
> +				dev_dbg(dev, "%s\n",
> +					"Authentication pass in Auth_Done");
> +
> +			sp.hcdp_state = HDCP_FINISH;
> +		} else {
> +			dev_err(dev, "Authentication failed in AUTH_done\n");
> +			sp_tx_video_mute(anx78xx, 1);
> +			sp_tx_clean_hdcp_status(anx78xx);
> +			sp.hcdp_state = HDCP_FAILE;
> +		}
> +	}
> +
> +	dev_dbg(dev, "sp_tx_auth_done_int_handler\n");
> +}
> +
> +static void sp_tx_lt_done_int_handler(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 c;
> +
> +	if (sp.tx_lt_state == LT_WAITTING_FINISH
> +		&& sp.tx_system_state == STATE_LINK_TRAINING) {
> +		sp_read_reg(anx78xx, TX_P0, LT_CTRL, &c);
> +		if (c & 0x70) {
> +			c = (c & 0x70) >> 4;
> +			dev_dbg(dev, "LT failed in interrupt, ERR = %.2x\n",
> +				(u16) c);
> +			sp.tx_lt_state = LT_ERROR;
> +		} else {
> +			dev_dbg(dev, "lt_done: LT Finish\n");
> +			sp.tx_lt_state = LT_FINISH;
> +		}
> +	}
> +
> +}
> +
> +static void sp_hdmi_rx_clk_det_int(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	dev_dbg(dev, "*HDMI_RX Interrupt: Pixel Clock Change.\n");
> +	if (sp.tx_system_state > STATE_VIDEO_OUTPUT) {
> +		sp_tx_video_mute(anx78xx, 1);
> +		sp_tx_enable_audio_output(anx78xx, 0);
> +		sp_tx_set_sys_state(anx78xx, STATE_VIDEO_OUTPUT);
> +	}
> +}
> +
> +static void sp_hdmi_rx_sync_det_int(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	dev_dbg(dev, "*HDMI_RX Interrupt: Sync Detect.\n");
> +}
> +
> +static void sp_hdmi_rx_hdmi_dvi_int(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 c;
> +
> +	dev_dbg(dev, "sp_hdmi_rx_hdmi_dvi_int.\n");
> +	sp_read_reg(anx78xx, RX_P0, HDMI_STATUS, &c);
> +	sp.hdmi_dvi_status = 1;
> +	if ((c & BIT(0)) != (sp.hdmi_dvi_status & BIT(0))) {
> +		dev_dbg(dev, "hdmi_dvi_int: Is HDMI MODE: %x.\n",
> +			(u16)(c & HDMI_MODE));
> +		sp.hdmi_dvi_status = (c & BIT(0));
> +		hdmi_rx_mute_audio(anx78xx, 1);
> +		system_state_change_with_case(anx78xx, STATE_LINK_TRAINING);
> +	}
> +}
> +
> +static void sp_hdmi_rx_new_avi_int(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	dev_dbg(dev, "*HDMI_RX Interrupt: New AVI Packet.\n");
> +	sp_tx_lvttl_bit_mapping(anx78xx);
> +	sp_tx_set_colorspace(anx78xx);
> +	sp_tx_avi_setup(anx78xx);
> +	sp_tx_config_packets(anx78xx, AVI_PACKETS);
> +}
> +
> +static void sp_hdmi_rx_new_vsi_int(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 hdmi_video_format, v3d_structure;
> +
> +	dev_dbg(dev, "*HDMI_RX Interrupt: NEW VSI packet.\n");
> +
> +	sp_write_reg_and(anx78xx, TX_P0, SP_TX_3D_VSC_CTRL, ~INFO_FRAME_VSC_EN);
> +	/* VSI package header */
> +	if ((sp_i2c_read_byte(anx78xx, RX_P1, HDMI_RX_MPEG_TYPE_REG) != 0x81)
> +		|| (sp_i2c_read_byte(anx78xx, RX_P1, HDMI_RX_MPEG_VER_REG)
> +		!= 0x01))
> +		return;
> +
> +	dev_dbg(dev, "Setup VSI package!\n");
> +
> +	sp_tx_vsi_setup(anx78xx);
> +	sp_tx_config_packets(anx78xx, VSI_PACKETS);
> +
> +	sp_read_reg(anx78xx, RX_P1, HDMI_RX_MPEG_DATA03_REG,
> +		&hdmi_video_format);
> +
> +	if ((hdmi_video_format & 0xe0) == 0x40) {
> +		dev_dbg(dev, "3D VSI packet detected. Config VSC packet\n");
> +
> +		sp_read_reg(anx78xx, RX_P1, HDMI_RX_MPEG_DATA05_REG,
> +			&v3d_structure);
> +
> +		switch (v3d_structure&0xf0) {
> +		case 0x00:
> +			v3d_structure = 0x02;
> +			break;
> +		case 0x20:
> +			v3d_structure = 0x03;
> +			break;
> +		case 0x30:
> +			v3d_structure = 0x04;
> +			break;
> +		default:
> +			v3d_structure = 0x00;
> +			dev_dbg(dev, "3D structure is not supported\n");
> +			break;
> +		}
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_VSC_DB1, v3d_structure);
> +	}
> +	sp_write_reg_or(anx78xx, TX_P0, SP_TX_3D_VSC_CTRL, INFO_FRAME_VSC_EN);
> +	sp_write_reg_and(anx78xx, TX_P0, SP_TX_PKT_EN_REG, ~SPD_IF_EN);
> +	sp_write_reg_or(anx78xx, TX_P0, SP_TX_PKT_EN_REG, SPD_IF_UD);
> +	sp_write_reg_or(anx78xx, TX_P0, SP_TX_PKT_EN_REG, SPD_IF_EN);
> +}
> +
> +static void sp_hdmi_rx_no_vsi_int(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 c;
> +
> +	sp_read_reg(anx78xx, TX_P0, SP_TX_3D_VSC_CTRL, &c);
> +	if (c & INFO_FRAME_VSC_EN) {
> +		dev_dbg(dev, "No new VSI is received, disable  VSC packet\n");
> +		c &= ~INFO_FRAME_VSC_EN;
> +		sp_write_reg(anx78xx, TX_P0, SP_TX_3D_VSC_CTRL, c);
> +		sp_tx_mpeg_setup(anx78xx);
> +		sp_tx_config_packets(anx78xx, MPEG_PACKETS);
> +	}
> +}
> +
> +static void sp_hdmi_rx_restart_audio_chk(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	dev_dbg(dev, "WAIT_AUDIO: sp_hdmi_rx_restart_audio_chk.\n");
> +	system_state_change_with_case(anx78xx, STATE_AUDIO_OUTPUT);
> +}
> +
> +static void sp_hdmi_rx_cts_rcv_int(struct anx78xx *anx78xx)
> +{
> +	if (sp.tx_ao_state == AO_INIT)
> +		sp.tx_ao_state = AO_CTS_RCV_INT;
> +	else if (sp.tx_ao_state == AO_AUDIO_RCV_INT)
> +		sp.tx_ao_state = AO_RCV_INT_FINISH;
> +}
> +
> +static void sp_hdmi_rx_audio_rcv_int(struct anx78xx *anx78xx)
> +{
> +	if (sp.tx_ao_state == AO_INIT)
> +		sp.tx_ao_state = AO_AUDIO_RCV_INT;
> +	else if (sp.tx_ao_state == AO_CTS_RCV_INT)
> +		sp.tx_ao_state = AO_RCV_INT_FINISH;
> +}
> +
> +static void sp_hdmi_rx_audio_samplechg_int(struct anx78xx *anx78xx)
> +{
> +	u16 i;
> +	u8 c;
> +	/* transfer audio chaneel status from HDMI Rx to Slinmport Tx */
> +	for (i = 0; i < 5; i++) {
> +		sp_read_reg(anx78xx, RX_P0, (HDMI_RX_AUD_IN_CH_STATUS1_REG + i),
> +			&c);
> +		sp_write_reg(anx78xx, TX_P2, (SP_TX_AUD_CH_STATUS_REG1 + i), c);
> +	}
> +}
> +
> +static void sp_hdmi_rx_hdcp_error_int(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	static u8 count;
> +
> +	dev_dbg(dev, "*HDMI_RX Interrupt: hdcp error.\n");
> +	if (count >= 40) {
> +		count = 0;
> +		dev_dbg(dev, "Lots of hdcp error occurred ...\n");
> +		hdmi_rx_mute_audio(anx78xx, 1);
> +		hdmi_rx_mute_video(anx78xx, 1);
> +		hdmi_rx_set_hpd(anx78xx, 0);
> +		usleep_range(10000, 11000);
> +		hdmi_rx_set_hpd(anx78xx, 1);
> +	} else
> +		count++;
> +}
> +
> +static void sp_hdmi_rx_new_gcp_int(struct anx78xx *anx78xx)
> +{
> +	u8 c;
> +
> +	sp_read_reg(anx78xx, RX_P1, HDMI_RX_GENERAL_CTRL, &c);
> +	if (c & SET_AVMUTE) {
> +		hdmi_rx_mute_video(anx78xx, 1);
> +		hdmi_rx_mute_audio(anx78xx, 1);
> +	} else if (c & CLEAR_AVMUTE) {
> +		hdmi_rx_mute_video(anx78xx, 0);
> +		hdmi_rx_mute_audio(anx78xx, 0);
> +	}
> +}
> +
> +static void sp_tx_hpd_int_handler(struct anx78xx *anx78xx, u8 hpd_source)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	dev_dbg(dev, "sp_tx_hpd_int_handler\n");
> +
> +	switch (hpd_source) {
> +	case HPD_LOST:
> +		hdmi_rx_set_hpd(anx78xx, 0);
> +		sp_tx_set_sys_state(anx78xx, STATE_WAITTING_CABLE_PLUG);
> +		break;
> +	case HPD_CHANGE:
> +		dev_dbg(dev, "HPD:____________HPD changed!\n");
> +		usleep_range(2000, 4000);
> +		if (sp.common_int_status.common_int[3] & HPD_IRQ)
> +			sp_hpd_irq_process(anx78xx);
> +
> +		if (sp_i2c_read_byte(anx78xx, TX_P0,
> +		   SP_TX_SYS_CTRL3_REG) & HPD_STATUS) {
> +			if (sp.common_int_status.common_int[3] & HPD_IRQ)
> +				sp_hpd_irq_process(anx78xx);
> +		} else {
> +			if (sp_i2c_read_byte(anx78xx, TX_P0,
> +			    SP_TX_SYS_CTRL3_REG)
> +				& HPD_STATUS) {
> +				hdmi_rx_set_hpd(anx78xx, 0);
> +				sp_tx_set_sys_state(anx78xx,
> +					STATE_WAITTING_CABLE_PLUG);
> +			}
> +		}
> +		break;
> +	case PLUG:
> +		dev_dbg(dev, "HPD:____________HPD changed!\n");
> +		if (sp.tx_system_state < STATE_SP_INITIALIZED)
> +			sp_tx_set_sys_state(anx78xx, STATE_SP_INITIALIZED);
> +		break;
> +	default:
> +		break;
> +	}
> +}
> +
> +static void sp_system_isr_handler(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	if (sp.common_int_status.common_int[3] & HPD_CHANGE)
> +		sp_tx_hpd_int_handler(anx78xx, HPD_CHANGE);
> +	if (sp.common_int_status.common_int[3] & HPD_LOST)
> +		sp_tx_hpd_int_handler(anx78xx, HPD_LOST);
> +	if (sp.common_int_status.common_int[3] & HPD_IRQ)
> +		dev_dbg(dev, "++++++++++++++++========HDCP_IRQ interrupt\n");
> +	if (sp.common_int_status.common_int[0] & PLL_LOCK_CHG)
> +		sp_tx_pll_changed_int_handler(anx78xx);
> +
> +	if (sp.common_int_status.common_int[1] & HDCP_AUTH_DONE)
> +		sp_tx_auth_done_int_handler(anx78xx);
> +
> +	if (sp.common_int_status.common_int[2] & HDCP_LINK_CHECK_FAIL)
> +		sp_tx_hdcp_link_chk_fail_handler(anx78xx);
> +
> +	if (sp.common_int_status.common_int[4] & TRAINING_Finish)
> +		sp_tx_lt_done_int_handler(anx78xx);
> +
> +	if (sp.tx_system_state > STATE_SINK_CONNECTION) {
> +		if (sp.hdmi_rx_int_status.hdmi_rx_int[5] & NEW_AVI)
> +			sp_hdmi_rx_new_avi_int(anx78xx);
> +	}
> +
> +	if (sp.tx_system_state > STATE_VIDEO_OUTPUT) {
> +		if (sp.hdmi_rx_int_status.hdmi_rx_int[6] & NEW_VS) {
> +			sp.hdmi_rx_int_status.hdmi_rx_int[6] &= ~NO_VSI;
> +			sp_hdmi_rx_new_vsi_int(anx78xx);
> +		}
> +		if (sp.hdmi_rx_int_status.hdmi_rx_int[6] & NO_VSI)
> +			sp_hdmi_rx_no_vsi_int(anx78xx);
> +	}
> +
> +	if (sp.tx_system_state >= STATE_VIDEO_OUTPUT) {
> +		if (sp.hdmi_rx_int_status.hdmi_rx_int[0] & CKDT_CHANGE)
> +			sp_hdmi_rx_clk_det_int(anx78xx);
> +
> +		if (sp.hdmi_rx_int_status.hdmi_rx_int[0] & SCDT_CHANGE)
> +			sp_hdmi_rx_sync_det_int(anx78xx);
> +
> +		if (sp.hdmi_rx_int_status.hdmi_rx_int[0] & HDMI_DVI)
> +			sp_hdmi_rx_hdmi_dvi_int(anx78xx);
> +
> +		if ((sp.hdmi_rx_int_status.hdmi_rx_int[5] & NEW_AUD)
> +		     || (sp.hdmi_rx_int_status.hdmi_rx_int[2] & AUD_MODE_CHANGE
> +		   ))
> +			sp_hdmi_rx_restart_audio_chk(anx78xx);
> +
> +		if (sp.hdmi_rx_int_status.hdmi_rx_int[5] & CTS_RCV)
> +			sp_hdmi_rx_cts_rcv_int(anx78xx);
> +
> +		if (sp.hdmi_rx_int_status.hdmi_rx_int[4] & AUDIO_RCV)
> +			sp_hdmi_rx_audio_rcv_int(anx78xx);
> +
> +
> +		if (sp.hdmi_rx_int_status.hdmi_rx_int[1] & HDCP_ERR)
> +			sp_hdmi_rx_hdcp_error_int(anx78xx);
> +
> +		if (sp.hdmi_rx_int_status.hdmi_rx_int[5] & NEW_CP)
> +			sp_hdmi_rx_new_gcp_int(anx78xx);
> +
> +		if (sp.hdmi_rx_int_status.hdmi_rx_int[1] & AUDIO_SAMPLE_CHANGE)
> +			sp_hdmi_rx_audio_samplechg_int(anx78xx);
> +	}
> +}
> +
> +static void sp_tx_show_information(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 c, c1;
> +	u16 h_res, h_act, v_res, v_act;
> +	u16 h_fp, h_sw, h_bp, v_fp, v_sw, v_bp;
> +	ulong fresh_rate;
> +	ulong pclk;
> +
> +	dev_dbg(dev, "\n***************SP Video Information****************\n");
> +
> +	sp_read_reg(anx78xx, TX_P0, SP_TX_LINK_BW_SET_REG, &c);

Use sp_tx_get_link_bw.

> +	switch (c) {
> +	case 0x06:
> +		dev_dbg(dev, "BW = 1.62G\n");
> +		break;
> +	case 0x0a:
> +		dev_dbg(dev, "BW = 2.7G\n");
> +		break;
> +	case 0x14:
> +		dev_dbg(dev, "BW = 5.4G\n");
> +		break;
> +	case 0x19:
> +		dev_dbg(dev, "BW = 6.75G\n");
> +		break;
> +	default:
> +		break;
> +	}
> +
> +	pclk = sp_tx_pclk_calc(anx78xx);
> +	pclk = pclk / 10;
> +
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_TOTAL_LINE_STA_L, &c);
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_TOTAL_LINE_STA_H, &c1);
> +
> +	v_res = c1;
> +	v_res = v_res << 8;
> +	v_res = v_res + c;
> +
> +
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_ACT_LINE_STA_L, &c);
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_ACT_LINE_STA_H, &c1);
> +
> +	v_act = c1;
> +	v_act = v_act << 8;
> +	v_act = v_act + c;
> +
> +
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_TOTAL_PIXEL_STA_L, &c);
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_TOTAL_PIXEL_STA_H, &c1);
> +
> +	h_res = c1;
> +	h_res = h_res << 8;
> +	h_res = h_res + c;
> +
> +
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_ACT_PIXEL_STA_L, &c);
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_ACT_PIXEL_STA_H, &c1);
> +
> +	h_act = c1;
> +	h_act = h_act << 8;
> +	h_act = h_act + c;
> +
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_H_F_PORCH_STA_L, &c);
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_H_F_PORCH_STA_H, &c1);
> +
> +	h_fp = c1;
> +	h_fp = h_fp << 8;
> +	h_fp = h_fp + c;
> +
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_H_SYNC_STA_L, &c);
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_H_SYNC_STA_H, &c1);
> +
> +	h_sw = c1;
> +	h_sw = h_sw << 8;
> +	h_sw = h_sw + c;
> +
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_H_B_PORCH_STA_L, &c);
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_H_B_PORCH_STA_H, &c1);
> +
> +	h_bp = c1;
> +	h_bp = h_bp << 8;
> +	h_bp = h_bp + c;
> +
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_V_F_PORCH_STA, &c);
> +	v_fp = c;
> +
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_V_SYNC_STA, &c);
> +	v_sw = c;
> +
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_V_B_PORCH_STA, &c);
> +	v_bp = c;
> +
> +	dev_dbg(dev, "Total resolution is %d * %d\n", h_res, v_res);
> +
> +	dev_dbg(dev, "HF=%d, HSW=%d, HBP=%d\n", h_fp, h_sw, h_bp);
> +	dev_dbg(dev, "VF=%d, VSW=%d, VBP=%d\n", v_fp, v_sw, v_bp);
> +	dev_dbg(dev, "Active resolution is %d * %d", h_act, v_act);
> +
> +	if (h_res == 0 || v_res == 0)
> +		fresh_rate = 0;
> +	else {
> +		fresh_rate = pclk * 1000;
> +		fresh_rate = fresh_rate / h_res;
> +		fresh_rate = fresh_rate * 1000;
> +		fresh_rate = fresh_rate / v_res;
> +	}
> +	dev_dbg(dev, "   @ %ldHz\n", fresh_rate);
> +
> +	sp_read_reg(anx78xx, TX_P0, SP_TX_VID_CTRL, &c);
> +
> +	if ((c & 0x06) == 0x00)
> +		dev_dbg(dev, "ColorSpace: RGB,");
> +	else if ((c & 0x06) == 0x02)
> +		dev_dbg(dev, "ColorSpace: YCbCr422,");
> +	else if ((c & 0x06) == 0x04)
> +		dev_dbg(dev, "ColorSpace: YCbCr444,");
> +
> +	sp_read_reg(anx78xx, TX_P0, SP_TX_VID_CTRL, &c);
> +
> +	if ((c & 0xe0) == 0x00)
> +		dev_dbg(dev, "6 BPC\n");
> +	else if ((c & 0xe0) == 0x20)
> +		dev_dbg(dev, "8 BPC\n");
> +	else if ((c & 0xe0) == 0x40)
> +		dev_dbg(dev, "10 BPC\n");
> +	else if ((c & 0xe0) == 0x60)
> +		dev_dbg(dev, "12 BPC\n");
> +
> +
> +	if (is_anx_dongle(anx78xx)) {
> +		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x05, 0x23, 1, &c);
> +		dev_dbg(dev, "Analogix Dongle FW Ver %.2x\n", (u16)(c & 0x7f));
> +	}
> +
> +	dev_dbg(dev, "\n**************************************************\n");
> +}
> +
> +static void sp_clean_system_status(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	if (sp.need_clean_status) {
> +		dev_dbg(dev, "sp_clean_system_status. A -> B;\n");
> +		dev_dbg(dev, "A:");
> +		sp_print_sys_state(anx78xx, sp.tx_system_state_bak);
> +		dev_dbg(dev, "B:");
> +		sp_print_sys_state(anx78xx, sp.tx_system_state);
> +
> +		sp.need_clean_status = 0;
> +		if (sp.tx_system_state_bak >= STATE_LINK_TRAINING) {
> +			if (sp.tx_system_state >= STATE_AUDIO_OUTPUT)
> +				hdmi_rx_mute_audio(anx78xx, 1);
> +			else {
> +				hdmi_rx_mute_video(anx78xx, 1);
> +				sp_tx_video_mute(anx78xx, 1);
> +			}
> +		}
> +		if (sp.tx_system_state_bak >= STATE_HDCP_AUTH
> +			&& sp.tx_system_state <= STATE_HDCP_AUTH) {
> +			if (sp_i2c_read_byte(anx78xx, TX_P0, TX_HDCP_CTRL0)
> +			    & 0xFC)
> +				sp_tx_clean_hdcp_status(anx78xx);
> +		}
> +
> +		if (sp.hcdp_state != HDCP_CAPABLE_CHECK)
> +			sp.hcdp_state = HDCP_CAPABLE_CHECK;
> +
> +		if (sp.tx_sc_state != SC_INIT)
> +			sp.tx_sc_state = SC_INIT;
> +		if (sp.tx_lt_state != LT_INIT)
> +			sp.tx_lt_state = LT_INIT;
> +		if (sp.tx_vo_state != VO_WAIT_VIDEO_STABLE)
> +			sp.tx_vo_state = VO_WAIT_VIDEO_STABLE;
> +	}
> +}
> +
> +/******************add for HDCP cap check********************/
> +static u8 sp_hdcp_cap_check(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 g_hdcp_cap = 0;
> +	u8 temp;
> +
> +	if (AUX_OK == sp_tx_aux_dpcdread_bytes(anx78xx, 0x06, 0x80, 0x28, 1,
> +						&temp))
> +		g_hdcp_cap = (temp & 0x01) ? 1 : 0;
> +	else
> +		dev_dbg(dev, "HDCP CAPABLE: read AUX err!\n");
> +
> +	dev_dbg(dev, "hdcp cap check: %s Supported\n",
> +		g_hdcp_cap ? "" : "No");
> +
> +	return g_hdcp_cap;
> +}
> +/******************End HDCP cap check********************/
> +
> +static void sp_tasks_handler(struct anx78xx *anx78xx)
> +{
> +	sp_system_isr_handler(anx78xx);
> +	sp_hdcp_external_ctrl_flag_monitor(anx78xx);
> +	sp_clean_system_status(anx78xx);
> +	/*clear up backup system state*/
> +	if (sp.tx_system_state_bak != sp.tx_system_state)
> +		sp.tx_system_state_bak = sp.tx_system_state;
> +}
> +/******************End task  process********************/
> +
> +void sp_main_process(struct anx78xx *anx78xx)
> +{
> +	sp_state_process(anx78xx);
> +	if (sp.tx_system_state > STATE_WAITTING_CABLE_PLUG) {
> +		sp_int_rec(anx78xx);
> +		sp_tasks_handler(anx78xx);
> +	}
> +}
> +
> diff --git a/drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.h b/drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.h
> new file mode 100644
> index 0000000..371ba29
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.h
> @@ -0,0 +1,215 @@
> +/*
> + * Copyright(c) 2015, Analogix Semiconductor. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * 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.
> + *
> + */
> +
> +#ifndef __SLIMPORT_TX_DRV_H
> +#define __SLIMPORT_TX_DRV_H
> +
> +#include "anx78xx.h"
> +#include "slimport_tx_reg.h"
> +
> +#define FW_VERSION	0x22
> +
> +#define DVI_MODE	0x00
> +#define HDMI_MODE	0x01
> +
> +#define SP_POWER_ON	1
> +#define SP_POWER_DOWN	0
> +
> +#define MAX_BUF_CNT	16
> +
> +#define SP_BREAK(current_status, next_status) \
> +	{ if (next_status != (current_status) + 1) break; }
> +
> +enum rx_cbl_type {
> +	DWN_STRM_IS_NULL,
> +	DWN_STRM_IS_HDMI,
> +	DWN_STRM_IS_DIGITAL,
> +	DWN_STRM_IS_ANALOG,
> +	DWN_STRM_NUM
> +};

cable_type, and DOWN_STREAM.

> +
> +enum sp_tx_state {
> +	STATE_WAITTING_CABLE_PLUG,

WAITING

> +	STATE_SP_INITIALIZED,
> +	STATE_SINK_CONNECTION,
> +	STATE_PARSE_EDID,
> +	STATE_LINK_TRAINING,
> +	STATE_VIDEO_OUTPUT,
> +	STATE_HDCP_AUTH,
> +	STATE_AUDIO_OUTPUT,
> +	STATE_PLAY_BACK
> +};
> +
> +enum sp_tx_power_block {
> +	SP_TX_PWR_REG = REGISTER_PD,
> +	SP_TX_PWR_HDCP = HDCP_PD,
> +	SP_TX_PWR_AUDIO = AUDIO_PD,
> +	SP_TX_PWR_VIDEO = VIDEO_PD,
> +	SP_TX_PWR_LINK = LINK_PD,
> +	SP_TX_PWR_TOTAL = TOTAL_PD,
> +	SP_TX_PWR_NUMS
> +};
> +
> +enum hdmi_color_depth {
> +	HDMI_LEGACY = 0x00,
> +	HDMI_24BIT = 0x04,
> +	HDMI_30BIT = 0x05,
> +	HDMI_36BIT = 0x06,
> +	HDMI_48BIT = 0x07,
> +};
> +
> +enum sp_tx_send_msg {
> +	MSG_OCM_EN,
> +	MSG_INPUT_HDMI,
> +	MSG_INPUT_DVI,
> +	MSG_CLEAR_IRQ,
> +};
> +
> +enum sink_connection_status {
> +	SC_INIT,
> +	SC_CHECK_CABLE_TYPE,
> +	SC_WAITTING_CABLE_TYPE = SC_CHECK_CABLE_TYPE+5,
> +	SC_SINK_CONNECTED,
> +	SC_NOT_CABLE,
> +	SC_STATE_NUM
> +};
> +
> +enum cable_type_status {
> +	CHECK_AUXCH,
> +	GETTED_CABLE_TYPE,
> +	CABLE_TYPE_STATE_NUM
> +};
> +
> +enum sp_tx_lt_status {
> +	LT_INIT,
> +	LT_WAIT_PLL_LOCK,
> +	LT_CHECK_LINK_BW,
> +	LT_START,
> +	LT_WAITTING_FINISH,
> +	LT_ERROR,
> +	LT_FINISH,
> +	LT_END,
> +	LT_STATES_NUM
> +};
> +
> +enum hdcp_status {
> +	HDCP_CAPABLE_CHECK,
> +	HDCP_WAITTING_VID_STB,
> +	HDCP_HW_ENABLE,
> +	HDCP_WAITTING_FINISH,
> +	HDCP_FINISH,
> +	HDCP_FAILE,
> +	HDCP_NOT_SUPPORT,
> +	HDCP_PROCESS_STATE_NUM
> +};
> +
> +enum video_output_status {
> +	VO_WAIT_VIDEO_STABLE,
> +	VO_WAIT_TX_VIDEO_STABLE,
> +	VO_CHECK_VIDEO_INFO,
> +	VO_FINISH,
> +	VO_STATE_NUM
> +};
> +
> +enum audio_output_status {
> +	AO_INIT,
> +	AO_CTS_RCV_INT,
> +	AO_AUDIO_RCV_INT,
> +	AO_RCV_INT_FINISH,
> +	AO_OUTPUT,
> +	AO_STATE_NUM
> +};
> +
> +struct packet_avi {
> +	u8 avi_data[13];
> +};
> +
> +
> +struct packet_spd {
> +	u8 spd_data[25];
> +};
> +
> +struct packet_mpeg {
> +	u8 mpeg_data[13];
> +};
> +
> +struct audio_info_frame {
> +	u8 type;
> +	u8 version;
> +	u8 length;
> +	u8 pb_byte[11];
> +};
> +
> +enum packets_type {
> +	AVI_PACKETS,
> +	SPD_PACKETS,
> +	MPEG_PACKETS,
> +	VSI_PACKETS,
> +	AUDIF_PACKETS
> +};
> +
> +struct common_int {
> +	u8 common_int[5];
> +	u8 change_flag;
> +};
> +
> +struct hdmi_rx_int {
> +	u8 hdmi_rx_int[7];
> +	u8 change_flag;
> +};
> +
> +enum xtal_enum {
> +	XTAL_19D2M,
> +	XTAL_24M,
> +	XTAL_25M,
> +	XTAL_26M,
> +	XTAL_27M,
> +	XTAL_38D4M,
> +	XTAL_52M,
> +	XTAL_NOT_SUPPORT,
> +	XTAL_CLK_NUM

Since these are actually register values, I'd assign them a value here
(e.g. XTAL_19D2M = 0, XTAL_24M = 1, etc.).

> +};
> +
> +enum sp_ssc_dep {
> +	SSC_DEP_DISABLE = 0x0,
> +	SSC_DEP_500PPM,
> +	SSC_DEP_1000PPM,
> +	SSC_DEP_1500PPM,
> +	SSC_DEP_2000PPM,
> +	SSC_DEP_2500PPM,
> +	SSC_DEP_3000PPM,
> +	SSC_DEP_3500PPM,
> +	SSC_DEP_4000PPM,
> +	SSC_DEP_4500PPM,
> +	SSC_DEP_5000PPM,
> +	SSC_DEP_5500PPM,
> +	SSC_DEP_6000PPM
> +};
> +
> +struct anx78xx_clock_data {
> +	unsigned char xtal_clk;
> +	unsigned int xtal_clk_m10;
> +};
> +
> +bool sp_chip_detect(struct anx78xx *anx78xx);
> +
> +void sp_main_process(struct anx78xx *anx78xx);
> +
> +void sp_tx_variable_init(void);
> +
> +u8 sp_tx_cur_states(void);
> +
> +void sp_tx_clean_state_machine(void);
> +
> +#endif
> diff --git a/drivers/gpu/drm/bridge/anx78xx/slimport_tx_reg.h b/drivers/gpu/drm/bridge/anx78xx/slimport_tx_reg.h
> new file mode 100644
> index 0000000..8d89382
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/anx78xx/slimport_tx_reg.h
> @@ -0,0 +1,786 @@
> +/*
> + * Copyright(c) 2015, Analogix Semiconductor. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * 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.
> + *
> + */
> +
> +#ifndef __SLIMPORT_TX_REG_DEF_H
> +#define __SLIMPORT_TX_REG_DEF_H
> +
> +#define TX_P0				0x70
> +#define TX_P1				0x7A
> +#define TX_P2				0x72
> +
> +#define RX_P0				0x7e
> +#define RX_P1				0x80
> +
> +/***************************************************************/
> +/*Register definition of device address 0x7e*/
> +#define HDMI_RX_PORT_SEL_REG		0x10
> +#define DDC_EN				0x10
> +#define TMDS_EN				0x01
> +
> +#define RX_SRST				0x11
> +#define VIDEO_RST			0x10
> +#define HDCP_MAN_RST			0X04
> +#define TMDS_RST			0X02
> +#define SW_MAN_RST			0X01
> +
> +#define RX_SW_RST2			0x12
> +#define DDC_RST				0x04
> +
> +#define HDMI_RX_SYS_STATUS_REG		0X14
> +#define PWR5V				0X08
> +#define TMDS_VSYNC_DET			0X04
> +#define TMDS_CLOCK_DET			0X02
> +#define TMDS_DE_DET			0X01
> +
> +#define HDMI_STATUS			0X15
> +#define DEEP_COLOR_MODE			0X40
> +#define HDMI_AUD_LAYOUT			0X08
> +#define MUTE_STAT			0X04
> +
> +#define RX_MUTE_CTRL			0X16
> +#define MUTE_POL			0X04
> +#define AUD_MUTE			0X02
> +#define VID_MUTE			0X01
> +
> +#define HDMI_RX_SYS_CTRL1_REG		0X17
> +
> +#define RX_SYS_PWDN1			0X18
> +#define PWDN_CTRL			0X01
> +
> +#define RX_AEC_CTRL			0X20
> +#define AVC_OE				0x80
> +#define AAC_OE				0X40
> +#define AVC_EN				0X02
> +#define AAC_EN				0X01
> +
> +#define RX_AEC_EN0			0X24
> +#define AEC_EN07			0X80
> +#define AEC_EN06			0X40
> +#define AEC_EN05			0X20
> +#define AEC_EN04			0X10
> +#define AEC_EN03			0X08
> +#define AEC_EN02			0X04
> +#define AEC_EN01			0X02
> +#define AEC_EN00			0X01
> +
> +#define RX_AEC_EN1			0X25
> +#define AEC_EN15			0X80
> +#define AEC_EN14			0X40
> +#define AEC_EN13			0X20
> +#define AEC_EN12			0X10
> +#define AEC_EN11			0X08
> +#define AEC_EN10			0X04
> +#define AEC_EN09			0X02
> +#define AEC_EN08			0X01
> +
> +#define RX_AEC_EN2			0X26
> +#define AEC_EN23			0X80
> +#define AEC_EN22			0X40
> +#define AEC_EN21			0X20
> +#define AEC_EN20			0X10
> +#define AEC_EN19			0X08
> +#define AEC_EN18			0X04
> +#define AEC_EN17			0X02
> +#define AEC_EN16			0X01
> +
> +
> +#define HDMI_RX_INT_STATUS1_REG		0X31
> +#define HDMI_DVI			0X80
> +#define CKDT_CHANGE			0X40
> +#define SCDT_CHANGE			0X20
> +#define PCLK_CHANGE			0X10
> +#define PLL_UNLOCK			0X08
> +#define CABLE_UNPLUG			0X04
> +#define SET_MUTE			0X02
> +#define SW_INTR				0X01
> +
> +#define HDMI_RX_INT_STATUS2_REG		0X32
> +#define AUTH_START			0X80
> +#define AUTH_DONE			0X40
> +#define HDCP_ERR			0X20
> +#define ECC_ERR				0X10
> +#define AUDIO_SAMPLE_CHANGE		0X01
> +
> +#define HDMI_RX_INT_STATUS3_REG		0X33
> +#define AUD_MODE_CHANGE			0X01
> +
> +#define HDMI_RX_INT_STATUS4_REG		0X34
> +#define VSYNC_DET			0X80
> +#define SYNC_POL_CHANGE			0X40
> +#define V_RES_CHANGE			0X20
> +#define H_RES_CHANGE			0X10
> +#define I_P_CHANGE			0X08
> +#define DP_CHANGE			0X04
> +#define COLOR_DEPTH_CHANGE		0X02
> +#define COLOR_MODE_CHANGE		0X01
> +
> +#define HDMI_RX_INT_STATUS5_REG		0X35
> +#define VFIFO_OVERFLOW			0X80
> +#define VFIFO_UNDERFLOW			0X40
> +#define CTS_N_ERR			0X08
> +#define NO_AVI				0X02
> +#define AUDIO_RCV			0X01
> +
> +#define HDMI_RX_INT_STATUS6_REG		0X36
> +#define CTS_RCV				0X80
> +#define NEW_UNR_PKT			0X40
> +#define NEW_MPEG			0X20
> +#define NEW_AUD				0X10
> +#define NEW_SPD				0X08
> +#define NEW_ACP				0X04
> +#define NEW_AVI				0X02
> +#define NEW_CP				0X01
> +
> +#define HDMI_RX_INT_STATUS7_REG		0X37
> +#define NO_VSI				0X80
> +#define HSYNC_DET			0X20
> +#define NEW_VS				0X10
> +#define NO_ACP				0X08
> +#define REF_CLK_CHG			0X04
> +#define CEC_RX_READY			0X02
> +#define CEC_TX_DONE			0X01
> +
> +#define HDMI_RX_PKT_RX_INDU_INT_CTRL	0X3F
> +#define NEW_VS_CTRL			0X80
> +#define NEW_UNR				0X40
> +#define NEW_MPEG			0X20
> +#define NEW_AUD				0X10
> +#define NEW_SPD				0X08
> +#define NEW_ACP				0X04
> +#define NEW_AVI				0X02
> +
> +
> +#define HDMI_RX_INT_MASK1_REG		0X41
> +#define HDMI_RX_INT_MASK2_REG		0X42
> +#define HDMI_RX_INT_MASK3_REG		0X43
> +#define HDMI_RX_INT_MASK4_REG		0X44
> +#define HDMI_RX_INT_MASK5_REG		0X45
> +#define HDMI_RX_INT_MASK6_REG		0X46
> +#define HDMI_RX_INT_MASK7_REG		0X47
> +
> +#define HDMI_RX_TMDS_CTRL_REG1		0X50
> +#define HDMI_RX_TMDS_CTRL_REG2		0X51
> +#define HDMI_RX_TMDS_CTRL_REG4		0X53
> +#define HDMI_RX_TMDS_CTRL_REG5		0X54
> +#define HDMI_RX_TMDS_CTRL_REG6		0X55
> +#define HDMI_RX_TMDS_CTRL_REG7		0X56
> +#define TERM_PD				0x01
> +
> +#define HDMI_RX_TMDS_CTRL_REG18		0X61
> +#define PLL_RESET			0x10
> +
> +#define HDMI_RX_TMDS_CTRL_REG19		0X62
> +#define HDMI_RX_TMDS_CTRL_REG20		0X63
> +#define HDMI_RX_TMDS_CTRL_REG21		0X64
> +#define HDMI_RX_TMDS_CTRL_REG22		0X65
> +
> +
> +#define HDMI_RX_VIDEO_STATUS_REG1	0x70
> +#define COLOR_DEPTH			0xF0
> +#define DEFAULT_PHASE			0X08
> +#define VIDEO_TYPE			0X04
> +
> +
> +#define HDMI_RX_HTOTAL_LOW		0X71
> +#define HDMI_RX_HTOTAL_HIGH		0X72
> +#define HDMI_RX_VTOTAL_LOW		0X73
> +#define HDMI_RX_VTOTAL_HIGH		0X74
> +
> +#define HDMI_RX_HACT_LOW		0X75
> +#define HDMI_RX_HACT_HIGH		0X76
> +#define HDMI_RX_VACT_LOW		0X77
> +#define HDMI_RX_VACT_HIGH		0X78
> +
> +#define HDMI_RX_V_SYNC_WIDTH		0X79
> +#define HDMI_RX_V_BACK_PORCH		0X7A
> +#define HDMI_RX_H_FRONT_PORCH_LOW	0X7B
> +#define HDMI_RX_H_FRONT_PORCH_HIGH	0X7C
> +
> +#define HDMI_RX_H_SYNC_WIDTH_LOW	0X7D
> +#define HDMI_RX_H_SYNC_WIDTH_HIGH	0X7E
> +
> +#define RX_VID_DATA_RNG			0X83
> +#define YC_LIMT				0X10
> +#define OUTPUT_LIMIT_EN			0X08
> +#define OUTPUT_LIMIT_RANGE		0X04
> +#define R2Y_INPUT_LIMIT			0X02
> +#define XVYCC_LIMIT			0X01
> +
> +#define HDMI_RX_VID_OUTPUT_CTRL3_REG	0X86
> +
> +#define HDMI_RX_VID_PCLK_CNTR_REG	0X8B
> +
> +#define HDMI_RX_AUD_IN_CH_STATUS1_REG	0xC7
> +#define HDMI_RX_AUD_IN_CH_STATUS4_REG	0XCA
> +
> +#define RX_CEC_CTRL			0XD0
> +#define CEC_RX_EN			0X08
> +#define CEC_TX_ST			0X04
> +#define CEC_PIN_SEL			0X02
> +#define CEC_RST				0X01
> +
> +#define HDMI_RX_CEC_RX_STATUS_REG	0XD1
> +#define HDMI_RX_CEC_RX_BUSY		0X80
> +#define HDMI_RX_CEC_RX_FULL		0X20
> +#define HDMI_RX_CEC_RX_EMP		0X10
> +
> +#define HDMI_RX_CEC_TX_STATUS_REG	0XD2
> +#define HDMI_RX_CEC_TX_BUSY		0X80
> +#define HDMI_RX_CEC_TX_FAIL		0X40
> +#define HDMI_RX_CEC_TX_FULL		0X20
> +#define HDMI_RX_CEC_TX_EMP		0X10
> +
> +
> +#define HDMI_RX_CEC_FIFO_REG		0XD3
> +
> +#define RX_CEC_SPEED			0XD4
> +#define CEC_SPEED_27M			0x40
> +
> +#define HDMI_RX_HDMI_CRITERIA_REG	0XE1
> +
> +#define HDMI_RX_HDCP_EN_CRITERIA_REG	0XE2
> +#define ENC_EN_MODE			0X20
> +
> +#define RX_CHIP_CTRL			0XE3
> +#define MAN_HDMI5V_DET			0X08
> +#define PLLLOCK_CKDT_EN			0X04
> +#define ANALOG_CKDT_EN			0X02
> +#define DIGITAL_CKDT_EN			0X01
> +
> +#define RX_PACKET_REV_STA		0XF3
> +#define AVI_RCVD			0X40
> +#define VSI_RCVD			0X20
> +/***************************************************************/
> +/*Register definition of device address 0x80*/
> +
> +
> +#define HDMI_RX_HDCP_STATUS_REG		0X3F
> +#define ADV_CIPHER			0X80
> +#define LOAD_KEY_DONE			0X40
> +#define DECRYPT_EN			0X20
> +#define AUTH_EN				0X10
> +#define BKSV_DISABLE			0X02
> +#define CLEAR_RI			0X01
> +
> +#define HDMI_RX_SPD_TYPE_REG		0X40
> +#define HDMI_RX_SPD_VER_REG		0X41
> +#define HDMI_RX_SPD_LEN_REG		0X42
> +#define HDMI_RX_SPD_CHKSUM_REG		0X43
> +#define HDMI_RX_SPD_DATA00_REG		0X44
> +
> +#define HDMI_RX_ACP_HB0_REG		0X60
> +#define HDMI_RX_ACP_HB1_REG		0X61
> +#define HDMI_RX_ACP_HB2_REG		0X62
> +#define HDMI_RX_ACP_DATA00_REG		0X63
> +
> +#define HDMI_RX_AVI_TYPE_REG		0XA0
> +#define HDMI_RX_AVI_VER_REG		0XA1
> +#define HDMI_RX_AVI_LEN_REG		0XA2
> +#define HDMI_RX_AVI_CHKSUM_REG		0XA3
> +#define HDMI_RX_AVI_DATA00_REG		0XA4
> +
> +#define HDMI_RX_AUDIO_TYPE_REG		0XC0
> +#define HDMI_RX_AUDIO_VER_REG		0XC1
> +#define HDMI_RX_AUDIO_LEN_REG		0XC2
> +#define HDMI_RX_AUDIO_CHKSUM_REG	0XC3
> +#define HDMI_RX_AUDIO_DATA00_REG	0XC4
> +
> +#define HDMI_RX_MPEG_TYPE_REG		0XE0
> +#define HDMI_RX_MPEG_VER_REG		0XE1
> +#define HDMI_RX_MPEG_LEN_REG		0XE2
> +#define HDMI_RX_MPEG_CHKSUM_REG		0XE3
> +#define HDMI_RX_MPEG_DATA00_REG		0XE4
> +#define HDMI_RX_MPEG_DATA03_REG		0XE7
> +#define HDMI_RX_MPEG_DATA05_REG		0XE9
> +
> +#define HDMI_RX_SPD_INFO_CTRL		0X5F
> +#define HDMI_RX_ACP_INFO_CTRL		0X7F
> +
> +#define HDMI_RX_GENERAL_CTRL		0X9F
> +#define CLEAR_AVMUTE			0x10
> +#define SET_AVMUTE			0x01
> +
> +#define HDMI_RX_MPEG_VS_CTRL		0XDF
> +#define HDMI_RX_MPEG_VS_INFO_CTRL	0XFF
> +
> +
> +/***************************************************************/
> +/*Register definition of device address 0x70*/
> +#define SP_TX_HDCP_STATUS		0x00
> +#define SP_TX_HDCP_AUTH_PASS		0x02
> +
> +#define TX_HDCP_CTRL0			0x01
> +#define STORE_AN			0x80
> +#define RX_REPEATER			0x40
> +#define RE_AUTH				0x20
> +#define SW_AUTH_OK			0x10
> +#define HARD_AUTH_EN			0x08
> +#define ENC_EN				0x04
> +#define BKSV_SRM_PASS			0x02
> +#define KSVLIST_VLD			0x01
> +
> +#define SP_TX_HDCP_CTRL1_REG		0x02
> +#define AINFO_EN			0x04
> +#define RCV_11_EN			0x02
> +#define HDCP_11_EN			0x01
> +
> +#define SP_TX_HDCP_LINK_CHK_FRAME_NUM	0x03
> +#define SP_TX_HDCP_CTRL2_REG		0x04
> +
> +
> +#define SP_TX_VID_BLANK_SET1		0X2C
> +#define SP_TX_VID_BLANK_SET2		0X2D
> +#define SP_TX_VID_BLANK_SET3		0X2E
> +
> +#define SP_TX_WAIT_R0_TIME		0x40
> +#define SP_TX_LINK_CHK_TIMER		0x41
> +#define SP_TX_WAIT_KSVR_TIME		0X42
> +
> +#define HDCP_KEY_STATUS			0x5E
> +
> +
> +#define M_VID_0				0xC0
> +#define M_VID_1				0xC1
> +#define M_VID_2				0xC2
> +#define N_VID_0				0xC3
> +#define N_VID_1				0xC4
> +#define N_VID_2				0xC5
> +#define HDCP_AUTO_TIMER			0x51
> +#define HDCP_AUTO_TIMER_VAL		0x00
> +
> +#define HDCP_KEY_CMD			0x5F
> +#define DISABLE_SYNC_HDCP		0x04
> +
> +#define OTP_KEY_PROTECT1		0x60
> +#define OTP_KEY_PROTECT2		0x61
> +#define OTP_KEY_PROTECT3		0x62
> +#define OTP_PSW1			0xa2
> +#define OTP_PSW2			0x7e
> +#define OTP_PSW3			0xc6
> +
> +
> +#define SP_TX_SYS_CTRL1_REG		0x80
> +#define CHIP_AUTH_RESET			0x80
> +#define PD_BYPASS_CHIP_AUTH		0x40
> +#define DET_STA				0x04
> +#define FORCE_DET			0x02
> +#define DET_CTRL			0x01
> +
> +#define SP_TX_SYS_CTRL2_REG		0x81
> +#define CHA_STA				0x04
> +#define FORCE_CHA			0x02
> +#define CHA_CTRL			0x01
> +
> +#define SP_TX_SYS_CTRL3_REG		0x82
> +#define HPD_STATUS			0x40
> +#define F_HPD				0x20
> +#define HPD_CTRL			0x10
> +#define STRM_VALID			0x04
> +#define F_VALID				0x02
> +#define VALID_CTRL			0x01
> +
> +#define SP_TX_SYS_CTRL4_REG		0x83
> +#define ENHANCED_MODE			0x08
> +
> +#define SP_TX_VID_CTRL			0x84
> +
> +#define SP_TX_AUD_CTRL			0x87
> +#define AUD_EN				0x01
> +
> +#define  I2C_GEN_10US_TIMER0		0x88
> +#define  I2C_GEN_10US_TIMER1		0x89
> +
> +#define SP_TX_PKT_EN_REG		0x90
> +#define AUD_IF_UP			0x80
> +#define AVI_IF_UD			0x40
> +#define MPEG_IF_UD			0x20
> +#define SPD_IF_UD			0x10
> +#define AUD_IF_EN			0x08
> +#define AVI_IF_EN			0x04
> +#define MPEG_IF_EN			0x02
> +#define SPD_IF_EN			0x01
> +
> +#define TX_HDCP_CTRL			0x92
> +#define AUTO_EN				0x80
> +#define AUTO_START			0x20
> +#define LINK_POLLING			0x02
> +
> +#define SP_TX_LINK_BW_SET_REG		0xA0
> +#define LINK_6P75G			0x19
> +#define LINK_5P4G			0x14
> +#define LINK_2P7G			0x0A
> +#define LINK_1P62G			0x06
> +
> +#define SP_TX_TRAINING_PTN_SET_REG	0xA2
> +#define SCRAMBLE_DISABLE		0x20
> +
> +#define SP_TX_LT_SET_REG		0xA3
> +#define MAX_PRE_REACH			0x20
> +#define MAX_DRIVE_REACH			0x04
> +#define DRVIE_CURRENT_LEVEL1		0x01
> +#define PRE_EMP_LEVEL1			0x08
> +
> +
> +#define LT_CTRL				0xA8
> +#define SP_TX_LT_EN			0x01
> +
> +#define TX_DEBUG1			0xB0
> +#define FORCE_HPD			0X80
> +#define HPD_POLLING_DET			0x40
> +#define HPD_POLLING_EN			0x20
> +#define DEBUG_PLL_LOCK			0x10
> +#define FORCE_PLL_LOCK			0X08
> +#define POLLING_EN			0x02
> +
> +#define SP_TX_DP_POLLING_PERIOD		0xB3
> +
> +#define TX_DP_POLLING			0xB4
> +#define AUTO_POLLING_DISABLE		0x01
> +
> +#define TX_LINK_DEBUG			0xB8
> +#define M_VID_DEBUG			0x20
> +#define NEW_PRBS7			0x10
> +#define INSERT_ER			0x02
> +#define PRBS31_EN			0x01
> +
> +#define DPCD_200			0xB9
> +#define DPCD_201			0xBA
> +#define DPCD_202			0xBB
> +#define DPCD_203			0xBC
> +#define DPCD_204			0xBD
> +#define DPCD_205			0xBE
> +
> +#define SP_TX_PLL_CTRL_REG		0xC7
> +#define PLL_RST				0x40
> +
> +#define SP_TX_ANALOG_PD_REG		0xC8
> +#define MACRO_PD			0x20
> +#define AUX_PD				0x10
> +#define CH0_PD				0x01
> +
> +#define TX_MISC				0xCD
> +#define EQ_TRAINING_LOOP		0x40
> +
> +
> +#define SP_TX_DOWN_SPREADING_CTRL1	0xD0
> +#define SP_TX_SSC_DISABLE		0xC0
> +#define SP_TX_SSC_DWSPREAD		0x40
> +
> +
> +#define SP_TX_M_CALCU_CTRL		0xD9
> +#define M_GEN_CLK_SEL			0x01
> +
> +#define TX_EXTRA_ADDR			0xCE
> +#define I2C_STRETCH_DISABLE		0X80
> +#define I2C_EXTRA_ADDR			0X50
> +
> +#define SP_TX_AUX_STATUS		0xE0
> +#define AUX_BUSY			0x10
> +
> +#define AUX_DEFER_CTRL			0xE2
> +#define BUF_DATA_COUNT			0xE4
> +
> +#define AUX_CTRL			0xE5
> +#define AUX_ADDR_7_0			0xE6
> +#define AUX_ADDR_15_8			0xE7
> +#define AUX_ADDR_19_16			0xE8
> +
> +#define AUX_CTRL2			0xE9
> +#define ADDR_ONLY_BIT			0x02
> +#define AUX_OP_EN			0x01
> +
> +#define SP_TX_3D_VSC_CTRL		0xEA
> +#define INFO_FRAME_VSC_EN		0x01
> +
> +#define SP_TX_VSC_DB1			0xEB
> +
> +#define BUF_DATA_0			0xF0
> +
> +
> +/***************************************************************/
> +/*Register definition of device address 0x72*/
> +#define SP_TX_VND_IDL_REG		0x00
> +#define SP_TX_VND_IDH_REG		0x01
> +#define SP_TX_DEV_IDL_REG		0x02
> +#define SP_TX_DEV_IDH_REG		0x03
> +#define SP_TX_DEV_REV_REG		0x04
> +
> +#define SP_POWERD_CTRL_REG		0x05
> +#define REGISTER_PD			0x80
> +#define HDCP_PD				0x20
> +#define AUDIO_PD			0x10
> +#define VIDEO_PD			0x08
> +#define LINK_PD				0x04
> +#define TOTAL_PD			0x02
> +
> +#define SP_TX_RST_CTRL_REG		0x06
> +#define MISC_RST			0x80
> +#define VIDCAP_RST			0x40
> +#define VIDFIF_RST			0x20
> +#define AUDFIF_RST			0x10
> +#define AUDCAP_RST			0x08
> +#define HDCP_RST			0x04
> +#define SW_RST				0x02
> +#define HW_RST				0x01
> +
> +#define RST_CTRL2			0x07
> +#define AUX_RST				0x04
> +#define SERDES_FIFO_RST			0x02
> +#define I2C_REG_RST			0x01
> +
> +#define VID_CTRL1			0x08
> +#define VIDEO_EN			0x80
> +#define VIDEO_MUTE			0x40
> +#define IN_BIT_SEl			0x04
> +#define DDR_CTRL			0x02
> +#define EDGE_CTRL			0x01
> +
> +#define SP_TX_VID_CTRL2_REG		0x09
> +#define IN_BPC_12BIT			0x30
> +#define IN_BPC_10BIT			0x20
> +#define IN_BPC_8BIT			0x10
> +
> +#define SP_TX_VID_CTRL3_REG		0x0A
> +#define HPD_OUT				0x40
> +
> +#define SP_TX_VID_CTRL5_REG		0x0C
> +#define CSC_STD_SEL			0x80
> +#define RANGE_Y2R			0x20
> +#define CSPACE_Y2R			0x10
> +
> +#define SP_TX_VID_CTRL6_REG		0x0D
> +#define VIDEO_PROCESS_EN		0x40
> +#define UP_SAMPLE			0x02
> +#define DOWN_SAMPLE			0x01
> +
> +#define SP_TX_VID_CTRL8_REG		0x0F
> +#define VID_VRES_TH			0x01
> +
> +#define SP_TX_TOTAL_LINE_STA_L		0x24
> +#define SP_TX_TOTAL_LINE_STA_H		0x25
> +#define SP_TX_ACT_LINE_STA_L		0x26
> +#define SP_TX_ACT_LINE_STA_H		0x27
> +#define SP_TX_V_F_PORCH_STA		0x28
> +#define SP_TX_V_SYNC_STA		0x29
> +#define SP_TX_V_B_PORCH_STA		0x2A
> +#define SP_TX_TOTAL_PIXEL_STA_L		0x2B
> +#define SP_TX_TOTAL_PIXEL_STA_H		0x2C
> +#define SP_TX_ACT_PIXEL_STA_L		0x2D
> +#define SP_TX_ACT_PIXEL_STA_H		0x2E
> +#define SP_TX_H_F_PORCH_STA_L		0x2F
> +#define SP_TX_H_F_PORCH_STA_H		0x30
> +#define SP_TX_H_SYNC_STA_L		0x31
> +#define SP_TX_H_SYNC_STA_H		0x32
> +#define SP_TX_H_B_PORCH_STA_L		0x33
> +#define SP_TX_H_B_PORCH_STA_H		0x34
> +
> +#define SP_TX_DP_ADDR_REG1		0x3E
> +
> +#define SP_TX_VID_BIT_CTRL0_REG		0x40
> +#define SP_TX_VID_BIT_CTRL10_REG	0x4a
> +#define SP_TX_VID_BIT_CTRL20_REG	0x54
> +
> +#define SP_TX_AVI_TYPE			0x70
> +#define SP_TX_AVI_VER			0x71
> +#define SP_TX_AVI_LEN			0x72
> +#define SP_TX_AVI_DB0			0x73
> +
> +#define BIT_CTRL_SPECIFIC		0x80
> +#define ENABLE_BIT_CTRL			0x01
> +
> +#define SP_TX_AUD_TYPE			0x83
> +#define SP_TX_AUD_VER			0x84
> +#define SP_TX_AUD_LEN			0x85
> +#define SP_TX_AUD_DB0			0x86
> +
> +#define SP_TX_SPD_TYPE			0x91
> +#define SP_TX_SPD_VER			0x92
> +#define SP_TX_SPD_LEN			0x93
> +#define SP_TX_SPD_DB0			0x94
> +
> +#define SP_TX_MPEG_TYPE			0xB0
> +#define SP_TX_MPEG_VER			0xB1
> +#define SP_TX_MPEG_LEN			0xB2
> +#define SP_TX_MPEG_DB0			0xB3
> +
> +#define SP_TX_AUD_CH_STATUS_REG1	0xD0
> +
> +#define SP_TX_AUD_CH_NUM_REG5		0xD5
> +#define CH_NUM_8			0xE0
> +#define AUD_LAYOUT			0x01
> +
> +#define GPIO_1_CONTROL			0xD6
> +#define GPIO_1_PULL_UP			0x04
> +#define GPIO_1_OEN			0x02
> +#define GPIO_1_DATA			0x01
> +
> +#define TX_ANALOG_DEBUG2		0xDD
> +#define POWERON_TIME_1P5MS		0X03
> +
> +#define TX_PLL_FILTER			0xDF
> +#define PD_RING_OSC			0x40
> +#define V33_SWITCH_ON			0x08
> +
> +#define TX_PLL_FILTER5			0xE0
> +#define SP_TX_ANALOG_CTRL0		0xE1
> +#define P5V_PROTECT			0X80
> +#define SHORT_PROTECT			0X40
> +#define P5V_PROTECT_PD			0X20
> +#define SHORT_PROTECT_PD		0X10
> +
> +#define TX_ANALOG_CTRL			0xE5
> +#define SHORT_DPDM			0X4
> +
> +#define SP_COMMON_INT_STATUS1		0xF1
> +#define PLL_LOCK_CHG			0x40
> +#define VIDEO_FORMAT_CHG		0x08
> +#define AUDIO_CLK_CHG			0x04
> +#define VIDEO_CLOCK_CHG			0x02
> +
> +#define SP_COMMON_INT_STATUS2		0xF2
> +#define HDCP_AUTH_CHG			0x02
> +#define HDCP_AUTH_DONE			0x01
> +
> +#define SP_COMMON_INT_STATUS3		0xF3
> +#define HDCP_LINK_CHECK_FAIL		0x01
> +
> +#define SP_COMMON_INT_STATUS4		0xF4
> +#define PLUG				0x01
> +#define ESYNC_ERR			0x10
> +#define HPD_LOST			0x02
> +#define HPD_CHANGE			0x04
> +#define HPD_IRQ				0x40
> +
> +#define SP_TX_INT_STATUS1		0xF7
> +#define DPCD_IRQ_REQUEST		0x80
> +#define HPD				0x40
> +#define TRAINING_Finish			0x20
> +#define POLLING_ERR			0x10
> +#define LINK_CHANGE			0x04
> +#define SINK_CHG			0x08
> +
> +#define SP_COMMON_INT_MASK1		0xF8
> +#define SP_COMMON_INT_MASK2		0xF9
> +#define SP_COMMON_INT_MASK3		0xFA
> +#define SP_COMMON_INT_MASK4		0xFB
> +#define SP_INT_MASK			0xFE
> +#define SP_TX_INT_CTRL_REG		0xFF
> +
> +
> +/***************************************************************/
> +/*Register definition of device address 0x7a*/
> +
> +#define SP_TX_LT_CTRL_REG0		0x30
> +#define SP_TX_LT_CTRL_REG1		0x31
> +#define SP_TX_LT_CTRL_REG2		0x34
> +#define SP_TX_LT_CTRL_REG3		0x35
> +#define SP_TX_LT_CTRL_REG4		0x36
> +#define SP_TX_LT_CTRL_REG5		0x37
> +#define SP_TX_LT_CTRL_REG6		0x38
> +#define SP_TX_LT_CTRL_REG7		0x39
> +#define SP_TX_LT_CTRL_REG8		0x3A
> +#define SP_TX_LT_CTRL_REG9		0x3B
> +#define SP_TX_LT_CTRL_REG10		0x40
> +#define SP_TX_LT_CTRL_REG11		0x41
> +#define SP_TX_LT_CTRL_REG12		0x44
> +#define SP_TX_LT_CTRL_REG13		0x45
> +#define SP_TX_LT_CTRL_REG14		0x46
> +#define SP_TX_LT_CTRL_REG15		0x47
> +#define SP_TX_LT_CTRL_REG16		0x48
> +#define SP_TX_LT_CTRL_REG17		0x49
> +#define SP_TX_LT_CTRL_REG18		0x4A
> +#define SP_TX_LT_CTRL_REG19		0x4B
> +
> +#define SP_TX_AUD_INTERFACE_CTRL0	0x5f
> +#define AUD_INTERFACE_DISABLE		0x80
> +
> +#define SP_TX_AUD_INTERFACE_CTRL2	0x60
> +#define M_AUD_ADJUST_ST			0x04
> +
> +#define SP_TX_AUD_INTERFACE_CTRL3	0x62
> +#define SP_TX_AUD_INTERFACE_CTRL4	0x67
> +#define SP_TX_AUD_INTERFACE_CTRL5	0x68
> +#define SP_TX_AUD_INTERFACE_CTRL6	0x69
> +
> +#define OCM_REG3			0x96
> +#define OCM_RST				0x80
> +
> +#define FW_VER_REG			0xB7
> +
> +
> +/***************************************************************/
> +/*Definition of DPCD*/
> +
> +
> +#define DOWN_R_TERM_DET _BIT6
> +#define SRAM_EEPROM_LOAD_DONE _BIT5
> +#define SRAM_CRC_CHK_DONE _BIT4
> +#define SRAM_CRC_CHK_PASS _BIT3
> +#define DOWN_STRM_ENC _BIT2
> +#define DOWN_STRM_AUTH _BIT1
> +#define DOWN_STRM_HPD _BIT0
> +
> +
> +#define DPCD_DPCD_REV			0x00
> +#define DPCD_MAX_LINK_RATE		0x01
> +
> +#define DPCD_MAX_LANE_COUNT		0x02
> +#define ENHANCED_FRAME_CAP		0x80
> +
> +#define DPCD_MAX_DOWNSPREAD		0x03
> +#define DPCD_NORP			0x04
> +#define DPCD_DSPORT_PRESENT		0x05
> +
> +#define DPCD_LINK_BW_SET		0x00
> +#define DPCD_LANE_COUNT_SET		0x01
> +#define ENHANCED_FRAME_EN		0x80
> +
> +#define DPCD_TRAINING_PATTERN_SET	0x02
> +#define DPCD_TRAINNIG_LANE0_SET		0x03
> +
> +#define DPCD_DOWNSPREAD_CTRL		0x07
> +#define SPREAD_AMPLITUDE		0X10
> +
> +#define DPCD_SINK_COUNT			0x00
> +#define DPCD_SERVICE_IRQ_VECTOR		0x01
> +#define TEST_IRQ			0x02
> +#define CP_IRQ				0x04
> +#define SINK_SPECIFIC_IRQ		0x40
> +
> +#define DPCD_LANE0_1_STATUS		0x02
> +
> +#define DPCD_LANE_ALIGN_UD		0x04
> +#define DPCD_SINK_STATUS		0x05
> +
> +#define DPCD_TEST_RESPONSE		0x60
> +#define TEST_ACK			0x01
> +#define DPCD_TEST_EDID_CHECKSUM_WRITE	0x04
> +
> +#define DPCD_TEST_EDID_CHECKSUM		0x61
> +
> +
> +#define DPCD_SPECIFIC_INTERRUPT1	0x10
> +#define DPCD_USER_COMM1			0x22
> +
> +#define DPCD_SPECIFIC_INTERRUPT2	0x11
> +
> +#define DPCD_TEST_REQUEST		0x18
> +#define DPCD_TEST_LINK_RATE		0x19
> +
> +#define DPCD_TEST_LANE_COUNT		0x20
> +
> +#define DPCD_PHY_TEST_PATTERN		0x48
> +
> +#endif
> +
> -- 
> 2.1.0
> 
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Re: [PATCHv3 3/3] drm: bridge: anx78xx: Add anx78xx driver support by analogix.

[Dan Carpenter]

On Thu, Sep 10, 2015 at 06:35:52PM +0200, Enric Balletbo i Serra wrote:
> diff --git a/drivers/gpu/drm/bridge/anx78xx/anx78xx.h b/drivers/gpu/drm/bridge/anx78xx/anx78xx.h
> new file mode 100644
> index 0000000..4f6dd1d
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/anx78xx/anx78xx.h
> @@ -0,0 +1,44 @@
> +/*
> + * Copyright(c) 2015, Analogix Semiconductor. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * 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.
> + *
> + */
> +
> +#ifndef __ANX78xx_H
> +#define __ANX78xx_H
> +
> +#include <linux/i2c.h>
> +#include <linux/mutex.h>
> +#include <linux/slab.h>
> +#include <linux/workqueue.h>
> +#include <linux/gpio/consumer.h>
> +
> +#define AUX_ERR  1
> +#define AUX_OK   0

Get rid of these.  They aren't used much and we could easily use normal
error codes instead.

> +
> +struct anx78xx_platform_data {
> +	struct gpio_desc *gpiod_pd;
> +	struct gpio_desc *gpiod_reset;
> +	spinlock_t lock;
> +};
> +
> +struct anx78xx {
> +	struct i2c_client *client;
> +	struct anx78xx_platform_data *pdata;
> +	struct delayed_work work;
> +	struct workqueue_struct *workqueue;
> +	struct mutex lock;
> +};
> +
> +void anx78xx_poweron(struct anx78xx *data);
> +void anx78xx_poweroff(struct anx78xx *data);
> +
> +#endif
> diff --git a/drivers/gpu/drm/bridge/anx78xx/anx78xx_main.c b/drivers/gpu/drm/bridge/anx78xx/anx78xx_main.c
> new file mode 100644
> index 0000000..b92d2bc
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/anx78xx/anx78xx_main.c
> @@ -0,0 +1,241 @@
> +/*
> + * Copyright(c) 2015, Analogix Semiconductor. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * 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.
> + *
> + */
> +#include <linux/delay.h>
> +#include <linux/interrupt.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/types.h>
> +#include <linux/err.h>
> +#include <linux/async.h>
> +#include <linux/of_gpio.h>
> +#include <linux/of_platform.h>
> +#include <linux/delay.h>
> +
> +#include "anx78xx.h"
> +#include "slimport_tx_drv.h"
> +
> +void anx78xx_poweron(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	struct anx78xx_platform_data *pdata = anx78xx->pdata;
> +
> +	gpiod_set_value_cansleep(pdata->gpiod_reset, 0);
> +	usleep_range(1000, 2000);
> +
> +	gpiod_set_value_cansleep(pdata->gpiod_pd, 0);
> +	usleep_range(1000, 2000);
> +
> +	gpiod_set_value_cansleep(pdata->gpiod_reset, 1);
> +
> +	dev_dbg(dev, "power on\n");

Remove these debug printks.  Use ftrace instead.

> +}
> +
> +void anx78xx_poweroff(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	struct anx78xx_platform_data *pdata = anx78xx->pdata;
> +
> +	gpiod_set_value_cansleep(pdata->gpiod_reset, 0);
> +	usleep_range(1000, 2000);
> +
> +	gpiod_set_value_cansleep(pdata->gpiod_pd, 1);
> +	usleep_range(1000, 2000);
> +
> +	dev_dbg(dev, "power down\n");

Delete.

> +}
> +
> +static int anx78xx_init_gpio(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	struct anx78xx_platform_data *pdata = anx78xx->pdata;
> +	int ret;
> +
> +	/* gpio for chip power down */
> +	pdata->gpiod_pd = devm_gpiod_get(dev, "pd", GPIOD_OUT_HIGH);
> +	if (IS_ERR(pdata->gpiod_pd)) {
> +		dev_err(dev, "unable to claim pd gpio\n");
> +		ret = PTR_ERR(pdata->gpiod_pd);
> +		return ret;


The ret variable isn't necessary in this function.

> +	}
> +
> +	/* gpio for chip reset */
> +	pdata->gpiod_reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
> +	if (IS_ERR(pdata->gpiod_reset)) {
> +		dev_err(dev, "unable to claim reset gpio\n");
> +		ret = PTR_ERR(pdata->gpiod_reset);
> +		return ret;
> +	}
> +
> +	return 0;
> +}
> +
> +static int anx78xx_system_init(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	int ret;
> +
> +	ret = sp_chip_detect(anx78xx);

Make sp_chip_detect() use normal error codes.

> +	if (ret == 0) {
> +		anx78xx_poweroff(anx78xx);
> +		dev_err(dev, "failed to detect anx78xx\n");
> +		return -ENODEV;
> +	}
> +
> +	sp_tx_variable_init();
> +	return 0;
> +}
> +
> +static void anx78xx_work_func(struct work_struct *work)
> +{
> +	struct anx78xx *anx78xx = container_of(work, struct anx78xx,
> +					       work.work);
> +	int workqueu_timer = 0;
> +
> +	if (sp_tx_cur_states() >= STATE_PLAY_BACK)
> +		workqueu_timer = 500;
> +	else
> +		workqueu_timer = 100;
> +	mutex_lock(&anx78xx->lock);
> +	sp_main_process(anx78xx);
> +	mutex_unlock(&anx78xx->lock);
> +	queue_delayed_work(anx78xx->workqueue, &anx78xx->work,
> +			   msecs_to_jiffies(workqueu_timer));
> +}
> +
> +static int anx78xx_i2c_probe(struct i2c_client *client,
> +			     const struct i2c_device_id *id)
> +{
> +	struct anx78xx *anx78xx;
> +	int ret;
> +
> +	if (!i2c_check_functionality(client->adapter,
> +		I2C_FUNC_SMBUS_I2C_BLOCK)) {

Use checkpatch.pl --strict.

	if (!i2c_check_functionality(client->adapter,
				     I2C_FUNC_SMBUS_I2C_BLOCK)) {

> +		dev_err(&client->dev, "i2c bus does not support the device\n");
> +		return -ENODEV;
> +	}
> +
> +	anx78xx = devm_kzalloc(&client->dev,
> +			sizeof(struct anx78xx),
> +			GFP_KERNEL);

Better style is:

	anx78xx = devm_kzalloc(&client->dev, sizeof(*anx78xx), GFP_KERNEL);

> +	if (!anx78xx)
> +		return -ENOMEM;
> +
> +	anx78xx->pdata = devm_kzalloc(&client->dev,
> +			sizeof(struct anx78xx_platform_data),
> +			GFP_KERNEL);
> +	if (!anx78xx->pdata)
> +		return -ENOMEM;
> +
> +	anx78xx->client = client;
> +
> +	i2c_set_clientdata(client, anx78xx);
> +
> +	mutex_init(&anx78xx->lock);
> +
> +	ret = anx78xx_init_gpio(anx78xx);
> +	if (ret) {
> +		dev_err(&client->dev, "failed to initialize gpios\n");
> +		return ret;
> +	}
> +
> +	INIT_DELAYED_WORK(&anx78xx->work, anx78xx_work_func);
> +
> +	anx78xx->workqueue = create_singlethread_workqueue("anx78xx_work");
> +	if (anx78xx->workqueue == NULL) {
> +		dev_err(&client->dev, "failed to create work queue\n");
> +		return -ENOMEM;
> +	}
> +
> +	ret = anx78xx_system_init(anx78xx);
> +	if (ret) {
> +		dev_err(&client->dev, "failed to initialize anx78xx\n");
> +		goto cleanup;
> +	}
> +
> +	/* enable driver */
> +	queue_delayed_work(anx78xx->workqueue, &anx78xx->work, 0);
> +
> +	return 0;
> +
> +cleanup:
> +	destroy_workqueue(anx78xx->workqueue);
> +	return ret;
> +}
> +
> +static int anx78xx_i2c_remove(struct i2c_client *client)
> +{
> +	struct anx78xx *anx78xx = i2c_get_clientdata(client);
> +
> +	destroy_workqueue(anx78xx->workqueue);
> +
> +	return 0;
> +}
> +
> +static int anx78xx_i2c_suspend(struct device *dev)
> +{
> +	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
> +	struct anx78xx *anx78xx = i2c_get_clientdata(client);
> +
> +	cancel_delayed_work_sync(&anx78xx->work);
> +	flush_workqueue(anx78xx->workqueue);
> +	anx78xx_poweroff(anx78xx);
> +	sp_tx_clean_state_machine();
> +
> +	return 0;
> +}
> +
> +static int anx78xx_i2c_resume(struct device *dev)
> +{
> +	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
> +	struct anx78xx *anx78xx = i2c_get_clientdata(client);
> +
> +	queue_delayed_work(anx78xx->workqueue, &anx78xx->work, 0);
> +
> +	return 0;
> +}
> +
> +static SIMPLE_DEV_PM_OPS(anx78xx_i2c_pm_ops,
> +			anx78xx_i2c_suspend, anx78xx_i2c_resume);
> +
> +static const struct i2c_device_id anx78xx_id[] = {
> +	{"anx7814", 0},
> +	{ /* sentinel */ }
> +};
> +
> +MODULE_DEVICE_TABLE(i2c, anx78xx_id);
> +
> +static const struct of_device_id anx78xx_match_table[] = {
> +	{.compatible = "analogix,anx7814",},
> +	{ /* sentinel */ },
> +};
> +
> +MODULE_DEVICE_TABLE(of, anx78xx_match_table);
> +
> +static struct i2c_driver anx78xx_driver = {
> +	.driver = {
> +		   .name = "anx7814",
> +		   .pm = &anx78xx_i2c_pm_ops,
> +		   .of_match_table = of_match_ptr(anx78xx_match_table),
> +		   },
> +	.probe = anx78xx_i2c_probe,
> +	.remove = anx78xx_i2c_remove,
> +	.id_table = anx78xx_id,
> +};
> +
> +module_i2c_driver(anx78xx_driver);
> +
> +MODULE_DESCRIPTION("Slimport transmitter ANX78XX driver");
> +MODULE_AUTHOR("Junhua Xia <jxia@analogixsemi.com>");
> +MODULE_LICENSE("GPL v2");
> +MODULE_VERSION("1.1");
> diff --git a/drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c b/drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c
> new file mode 100644
> index 0000000..1be7f69
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c
> @@ -0,0 +1,3198 @@
> +/*
> + * Copyright(c) 2015, Analogix Semiconductor. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * 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.
> + *
> + */
> +#include <linux/delay.h>
> +#include <linux/types.h>
> +
> +#include "anx78xx.h"
> +#include "slimport_tx_drv.h"
> +
> +#define XTAL_CLK_M10	pxtal_data[XTAL_27M].xtal_clk_m10
> +#define XTAL_CLK	pxtal_data[XTAL_27M].xtal_clk
> +
> +struct slimport {
> +	int	block_en;	/* HDCP control enable/ disable from AP */
> +
> +	u8	tx_test_bw;
> +	bool	tx_test_lt;
> +	bool	tx_test_edid;
> +
> +	u8	changed_bandwidth;
> +
> +	u8	hdmi_dvi_status;
> +	u8	need_clean_status;
> +
> +	u8	ds_vid_stb_cntr;
> +	u8	hdcp_fail_count;
> +
> +	u8	edid_break;
> +	u8	edid_checksum;
> +	u8	edid_blocks[256];
> +
> +	u8	read_edid_flag;
> +
> +	u8	down_sample_en;
> +
> +	struct packet_avi	tx_packet_avi;
> +	struct packet_spd	tx_packet_spd;
> +	struct packet_mpeg	tx_packet_mpeg;
> +	struct audio_info_frame	tx_audioinfoframe;
> +
> +	struct common_int	common_int_status;
> +	struct hdmi_rx_int	hdmi_rx_int_status;
> +
> +	enum sp_tx_state		tx_system_state;
> +	enum sp_tx_state		tx_system_state_bak;
> +	enum audio_output_status	tx_ao_state;
> +	enum video_output_status	tx_vo_state;
> +	enum sink_connection_status	tx_sc_state;
> +	enum sp_tx_lt_status		tx_lt_state;
> +	enum hdcp_status		hcdp_state;
> +};
> +
> +static struct slimport sp;
> +
> +static const u16 chipid_list[] = {
> +	0x7818,
> +	0x7816,
> +	0x7814,
> +	0x7812,
> +	0x7810,
> +	0x7806,
> +	0x7802
> +};
> +
> +static void sp_hdmi_rx_new_vsi_int(struct anx78xx *anx78xx);
> +static u8 sp_hdcp_cap_check(struct anx78xx *anx78xx);
> +static void sp_tx_show_information(struct anx78xx *anx78xx);
> +static void sp_print_sys_state(struct anx78xx *anx78xx, u8 ss);
> +
> +static int sp_read_reg(struct anx78xx *anx78xx, u8 slave_addr,
> +		u8 offset, u8 *buf)
> +{
> +	u8 ret;

"ret" should be an int.  It causes a signedness bug later.

> +	struct i2c_client *client = anx78xx->client;
> +
> +	client->addr = (slave_addr >> 1);
> +
> +	ret = i2c_smbus_read_byte_data(client, offset);
> +	if (ret < 0) {
> +		dev_err(&client->dev, "failed to read i2c addr=%x\n",
> +			slave_addr);
> +		return ret;
> +	}
> +
> +	*buf = ret;
> +
> +	return 0;
> +}
> +
> +static int sp_write_reg(struct anx78xx *anx78xx, u8 slave_addr,
> +		u8 offset, u8 value)
> +{
> +	int ret;
> +	struct i2c_client *client = anx78xx->client;
> +
> +	client->addr = (slave_addr >> 1);
> +
> +	ret = i2c_smbus_write_byte_data(client, offset, value);
> +	if (ret < 0)
> +		dev_err(&client->dev, "failed to write i2c addr=%x\n",
> +			slave_addr);
> +
> +	return ret;
> +}
> +
> +static u8 sp_i2c_read_byte(struct anx78xx *anx78xx,
> +		u8 dev, u8 offset)
> +{
> +	u8 ret;
> +
> +	sp_read_reg(anx78xx, dev, offset, &ret);
> +	return ret;

Ugh...  None of the callers check sp_read_reg() for failure...

> +}
> +
> +static void sp_reg_bit_ctl(struct anx78xx *anx78xx, u8 addr, u8 offset,
> +			u8 data, bool enable)
> +{
> +	u8 c;
> +
> +	sp_read_reg(anx78xx, addr, offset, &c);
> +	if (enable) {
> +		if ((c & data) != data) {
> +			c |= data;
> +			sp_write_reg(anx78xx, addr, offset, c);
> +		}
> +	} else
> +		if ((c & data) == data) {
> +			c &= ~data;
> +			sp_write_reg(anx78xx, addr, offset, c);
> +		}

Put curly braces around the else statement for two style reasons.
1) If one side of an if else statement has curly braces then both get
   them.
2) Multi-line indents get curly braces for readability.

> +}
> +
> +static inline void sp_write_reg_or(struct anx78xx *anx78xx, u8 address,
> +			u8 offset, u8 mask)
> +{
> +	sp_write_reg(anx78xx, address, offset,
> +		sp_i2c_read_byte(anx78xx, address, offset) | mask);
> +}
> +
> +static inline void sp_write_reg_and(struct anx78xx *anx78xx, u8 address,
> +			u8 offset, u8 mask)
> +{
> +	sp_write_reg(anx78xx, address, offset,
> +		sp_i2c_read_byte(anx78xx, address, offset) & mask);
> +}
> +
> +static inline void sp_write_reg_and_or(struct anx78xx *anx78xx, u8 address,
> +			u8 offset, u8 and_mask, u8 or_mask)
> +{
> +	sp_write_reg(anx78xx, address, offset,
> +	  (sp_i2c_read_byte(anx78xx, address, offset) & and_mask) | or_mask);
> +}
> +
> +static inline void sp_write_reg_or_and(struct anx78xx *anx78xx, u8 address,
> +			 u8 offset, u8 or_mask, u8 and_mask)
> +{
> +	sp_write_reg(anx78xx, address, offset,
> +	  (sp_i2c_read_byte(anx78xx, address, offset) | or_mask) & and_mask);
> +}
> +
> +static inline void sp_tx_video_mute(struct anx78xx *anx78xx, bool enable)
> +{
> +	sp_reg_bit_ctl(anx78xx, TX_P2, VID_CTRL1, VIDEO_MUTE, enable);
> +}
> +
> +static inline void hdmi_rx_mute_audio(struct anx78xx *anx78xx, bool enable)
> +{
> +	sp_reg_bit_ctl(anx78xx, RX_P0, RX_MUTE_CTRL, AUD_MUTE, enable);
> +}
> +
> +static inline void hdmi_rx_mute_video(struct anx78xx *anx78xx, bool enable)
> +{
> +	sp_reg_bit_ctl(anx78xx, RX_P0, RX_MUTE_CTRL, VID_MUTE, enable);
> +}
> +
> +static inline void sp_tx_addronly_set(struct anx78xx *anx78xx, bool enable)
> +{
> +	sp_reg_bit_ctl(anx78xx, TX_P0, AUX_CTRL2, ADDR_ONLY_BIT, enable);
> +}
> +
> +static inline void sp_tx_set_link_bw(struct anx78xx *anx78xx, u8 bw)
> +{
> +	sp_write_reg(anx78xx, TX_P0, SP_TX_LINK_BW_SET_REG, bw);
> +}
> +
> +static inline u8 sp_tx_get_link_bw(struct anx78xx *anx78xx)
> +{
> +	return sp_i2c_read_byte(anx78xx, TX_P0, SP_TX_LINK_BW_SET_REG);
> +}
> +
> +static inline bool sp_tx_get_pll_lock_status(struct anx78xx *anx78xx)
> +{
> +	u8 temp;
> +
> +	temp = sp_i2c_read_byte(anx78xx, TX_P0, TX_DEBUG1);
> +
> +	return (temp & DEBUG_PLL_LOCK) != 0 ? true : false;

Adding != 0 is just a double negative.  It adds verbiage and extra words
but it doesn't make the code more clear.

> +}
> +
> +static inline void gen_m_clk_with_downspeading(struct anx78xx *anx78xx)
> +{
> +	sp_write_reg_or(anx78xx, TX_P0, SP_TX_M_CALCU_CTRL, M_GEN_CLK_SEL);
> +}
> +
> +static inline void gen_m_clk_without_downspeading(struct anx78xx *anx78xx)
> +{
> +	sp_write_reg_and(anx78xx, TX_P0, SP_TX_M_CALCU_CTRL, (~M_GEN_CLK_SEL));
> +}
> +
> +static inline void hdmi_rx_set_hpd(struct anx78xx *anx78xx, bool enable)
> +{
> +	if (enable)
> +		sp_write_reg_or(anx78xx, TX_P2, SP_TX_VID_CTRL3_REG, HPD_OUT);
> +	else
> +		sp_write_reg_and(anx78xx, TX_P2, SP_TX_VID_CTRL3_REG, ~HPD_OUT);
> +}
> +
> +static inline void hdmi_rx_set_termination(struct anx78xx *anx78xx,
> +				bool enable)
> +{
> +	if (enable)
> +		sp_write_reg_and(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG7,
> +				~TERM_PD);
> +	else
> +		sp_write_reg_or(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG7,
> +				TERM_PD);
> +}
> +
> +static inline void sp_tx_clean_hdcp_status(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	sp_write_reg(anx78xx, TX_P0, TX_HDCP_CTRL0, 0x03);
> +	sp_write_reg_or(anx78xx, TX_P0, TX_HDCP_CTRL0, RE_AUTH);
> +	usleep_range(2000, 4000);
> +	dev_dbg(dev, "sp_tx_clean_hdcp_status\n");
> +}
> +
> +static inline void sp_tx_link_phy_initialization(struct anx78xx *anx78xx)
> +{
> +	sp_write_reg(anx78xx, TX_P2, SP_TX_ANALOG_CTRL0, 0x02);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG0, 0x01);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG10, 0x00);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG1, 0x03);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG11, 0x00);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG2, 0x07);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG12, 0x00);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG3, 0x7f);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG13, 0x00);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG4, 0x71);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG14, 0x0c);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG5, 0x6b);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG15, 0x42);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG6, 0x7f);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG16, 0x1e);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG7, 0x73);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG17, 0x3e);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG8, 0x7f);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG18, 0x72);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG9, 0x7F);
> +	sp_write_reg(anx78xx, TX_P1, SP_TX_LT_CTRL_REG19, 0x7e);
> +}
> +
> +static inline void sp_tx_set_sys_state(struct anx78xx *anx78xx, u8 ss)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	dev_dbg(dev, "set: clean_status: %x,\n ", (u16)sp.need_clean_status);
> +
> +	if ((sp.tx_system_state >= STATE_LINK_TRAINING)
> +	   && (ss < STATE_LINK_TRAINING))
> +		sp_write_reg_or(anx78xx, TX_P0, SP_TX_ANALOG_PD_REG, CH0_PD);
> +
> +	sp.tx_system_state_bak = sp.tx_system_state;
> +	sp.tx_system_state = ss;
> +	sp.need_clean_status = 1;
> +	sp_print_sys_state(anx78xx, sp.tx_system_state);
> +}
> +
> +static inline void reg_hardware_reset(struct anx78xx *anx78xx)
> +{
> +	sp_write_reg_or(anx78xx, TX_P2, SP_TX_RST_CTRL_REG, HW_RST);
> +	sp_tx_clean_state_machine();
> +	sp_tx_set_sys_state(anx78xx, STATE_SP_INITIALIZED);
> +	msleep(500);
> +}
> +
> +static inline void write_dpcd_addr(struct anx78xx *anx78xx, u8 addrh,
> +			u8 addrm, u8 addrl)
> +{
> +	u8 temp;
> +
> +	if (sp_i2c_read_byte(anx78xx, TX_P0, AUX_ADDR_7_0) != addrl)
> +		sp_write_reg(anx78xx, TX_P0, AUX_ADDR_7_0, addrl);
> +
> +	if (sp_i2c_read_byte(anx78xx, TX_P0, AUX_ADDR_15_8) != addrm)
> +		sp_write_reg(anx78xx, TX_P0, AUX_ADDR_15_8, addrm);
> +
> +	sp_read_reg(anx78xx, TX_P0, AUX_ADDR_19_16, &temp);
> +
> +	if ((temp & 0x0F) != (addrh & 0x0F))
> +		sp_write_reg(anx78xx, TX_P0, AUX_ADDR_19_16,
> +			(temp  & 0xF0) | addrh);
> +}
> +
> +static inline void goto_next_system_state(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	dev_dbg(dev, "next: clean_status: %x,\n ", (u16)sp.need_clean_status);
> +
> +	sp.tx_system_state_bak = sp.tx_system_state;
> +	sp.tx_system_state++;
> +	sp_print_sys_state(anx78xx, sp.tx_system_state);
> +}
> +
> +static inline void redo_cur_system_state(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	dev_dbg(dev, "redo: clean_status: %x,\n ", (u16)sp.need_clean_status);
> +
> +	sp.need_clean_status = 1;
> +	sp.tx_system_state_bak = sp.tx_system_state;
> +	sp_print_sys_state(anx78xx, sp.tx_system_state);
> +}
> +
> +static inline void system_state_change_with_case(struct anx78xx *anx78xx,
> +				u8 status)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	if (sp.tx_system_state >= status) {

Flip this condition around and pull the code in one indent level.

	if (status < sp.tx_system_state)
		return;

> +		dev_dbg(dev, "change_case: clean_status: %xm,\n ",

No extra space after the newline.

> +			(u16)sp.need_clean_status);
> +
> +		if ((sp.tx_system_state >= STATE_LINK_TRAINING)
> +				&& (status < STATE_LINK_TRAINING))

This should be aligned like this:

		if (sp.tx_system_state >= STATE_LINK_TRAINING &&
		    status < STATE_LINK_TRAINING)

1) Removed extra parens.
2) Move the && to the first line
3) Changed the alignment

> +			sp_write_reg_or(anx78xx, TX_P0, SP_TX_ANALOG_PD_REG,
> +					CH0_PD);
> +
> +		sp.need_clean_status = 1;
> +		sp.tx_system_state_bak = sp.tx_system_state;
> +		sp.tx_system_state = status;
> +		sp_print_sys_state(anx78xx, sp.tx_system_state);
> +	}
> +}
> +
> +static void sp_wait_aux_op_finish(struct anx78xx *anx78xx, u8 *err_flag)

Return an error.  Don't use an err_flag pointer.

> +{
> +	u8 cnt;
> +	u8 c;
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	*err_flag = 0;
> +	cnt = 150;
> +	while (sp_i2c_read_byte(anx78xx, TX_P0, AUX_CTRL2) & AUX_OP_EN) {
> +		usleep_range(2000, 4000);
> +		if ((cnt--) == 0) {

It's harmless but this will loop 151 times and not 150 as intended.
Putting parenthesis around a post-op doesn't change it to a pre-op.

> +			dev_err(dev, "aux operate failed!\n");
> +			*err_flag = 1;
> +			break;
> +		}
> +	}
> +
> +	sp_read_reg(anx78xx, TX_P0, SP_TX_AUX_STATUS, &c);
> +	if (c & 0x0F) {
> +		dev_err(dev, "wait aux operation status %.2x\n", (u16)c);
> +		*err_flag = 1;
> +	}
> +}
> +
> +static void sp_print_sys_state(struct anx78xx *anx78xx, u8 ss)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	switch (ss) {
> +	case STATE_WAITTING_CABLE_PLUG:
> +		dev_dbg(dev, "-STATE_WAITTING_CABLE_PLUG-\n");
> +		break;
> +	case STATE_SP_INITIALIZED:
> +		dev_dbg(dev, "-STATE_SP_INITIALIZED-\n");
> +		break;
> +	case STATE_SINK_CONNECTION:
> +		dev_dbg(dev, "-STATE_SINK_CONNECTION-\n");
> +		break;
> +	case STATE_PARSE_EDID:
> +		dev_dbg(dev, "-STATE_PARSE_EDID-\n");
> +		break;
> +	case STATE_LINK_TRAINING:
> +		dev_dbg(dev, "-STATE_LINK_TRAINING-\n");
> +		break;
> +	case STATE_VIDEO_OUTPUT:
> +		dev_dbg(dev, "-STATE_VIDEO_OUTPUT-\n");
> +		break;
> +	case STATE_HDCP_AUTH:
> +		dev_dbg(dev, "-STATE_HDCP_AUTH-\n");
> +		break;
> +	case STATE_AUDIO_OUTPUT:
> +		dev_dbg(dev, "-STATE_AUDIO_OUTPUT-\n");
> +		break;
> +	case STATE_PLAY_BACK:
> +		dev_dbg(dev, "-STATE_PLAY_BACK-\n");
> +		break;
> +	default:
> +		dev_err(dev, "system state is error1\n");
> +		break;
> +	}
> +}
> +
> +static void sp_tx_rst_aux(struct anx78xx *anx78xx)
> +{
> +	sp_write_reg_or(anx78xx, TX_P2, RST_CTRL2, AUX_RST);
> +	sp_write_reg_and(anx78xx, TX_P2, RST_CTRL2, ~AUX_RST);
> +}
> +
> +static u8 sp_tx_aux_dpcdread_bytes(struct anx78xx *anx78xx, u8 addrh,
> +		u8 addrm, u8 addrl, u8 ccount, u8 *pbuf)
> +{
> +	u8 c, c1, i;
> +	u8 bok;
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	sp_write_reg(anx78xx, TX_P0, BUF_DATA_COUNT, 0x80);
> +	c = ((ccount - 1) << 4) | 0x09;
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, c);
> +	write_dpcd_addr(anx78xx, addrh, addrm, addrl);
> +	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, AUX_OP_EN);
> +	usleep_range(2000, 4000);
> +
> +	sp_wait_aux_op_finish(anx78xx, &bok);
> +	if (bok == AUX_ERR) {
> +		dev_err(dev, "aux read failed\n");
> +		sp_read_reg(anx78xx, TX_P2, SP_TX_INT_STATUS1, &c);
> +		sp_read_reg(anx78xx, TX_P0, TX_DEBUG1, &c1);
> +		if (c1 & POLLING_EN) {
> +			if (c & POLLING_ERR)
> +				sp_tx_rst_aux(anx78xx);
> +		} else
> +			sp_tx_rst_aux(anx78xx);
> +		return AUX_ERR;
> +	}
> +
> +	for (i = 0; i < ccount; i++) {
> +		sp_read_reg(anx78xx, TX_P0, BUF_DATA_0 + i, &c);
> +		*(pbuf + i) = c;
> +		if (i >= MAX_BUF_CNT)
> +			break;
> +	}
> +	return AUX_OK;
> +}
> +
> +static u8 sp_tx_aux_dpcdwrite_bytes(struct anx78xx *anx78xx, u8 addrh,
> +		u8 addrm, u8 addrl, u8 ccount, u8 *pbuf)
> +{
> +	u8 c, i, ret;
> +
> +	c =  ((ccount - 1) << 4) | 0x08;
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, c);
> +	write_dpcd_addr(anx78xx, addrh, addrm, addrl);
> +	for (i = 0; i < ccount; i++) {
> +		c = *pbuf;
> +		pbuf++;
> +		sp_write_reg(anx78xx, TX_P0, BUF_DATA_0 + i, c);
> +
> +		if (i >= 15)
> +			break;


So far as I can see after a brief look at it, ccount is always 1 so we
will never hit the i >= 15 condition.  If we did though, then shouldn't
we handle it at the start of the function?  I never know how to handle
these imaginary situations in the right way...

> +	}
> +	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, AUX_OP_EN);
> +	sp_wait_aux_op_finish(anx78xx, &ret);
> +	return ret;
> +}
> +
> +static u8 sp_tx_aux_dpcdwrite_byte(struct anx78xx *anx78xx, u8 addrh,
> +		u8 addrm, u8 addrl, u8 data1)
> +{
> +	u8 ret;
> +
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x08);
> +	write_dpcd_addr(anx78xx, addrh, addrm, addrl);
> +	sp_write_reg(anx78xx, TX_P0, BUF_DATA_0, data1);
> +	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, AUX_OP_EN);
> +	sp_wait_aux_op_finish(anx78xx, &ret);
> +	return ret;
> +}
> +
> +static void sp_block_power_ctrl(struct anx78xx *anx78xx,
> +		enum sp_tx_power_block sp_tx_pd_block, u8 power)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	if (power == SP_POWER_ON)
> +		sp_write_reg_and(anx78xx, TX_P2, SP_POWERD_CTRL_REG,
> +			~sp_tx_pd_block);
> +	else
> +		sp_write_reg_or(anx78xx, TX_P2, SP_POWERD_CTRL_REG,
> +			sp_tx_pd_block);
> +
> +	 dev_dbg(dev, "sp_tx_power_on: %.2x\n", (u16)sp_tx_pd_block);
> +}
> +
> +static void sp_vbus_power_off(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	int i;
> +
> +	for (i = 0; i < 5; i++) {
> +		sp_write_reg_and(anx78xx, TX_P2, TX_PLL_FILTER5,
> +				(~P5V_PROTECT_PD & ~SHORT_PROTECT_PD));
> +		sp_write_reg_or(anx78xx, TX_P2, TX_PLL_FILTER, V33_SWITCH_ON);
> +		if (!(sp_i2c_read_byte(anx78xx, TX_P2, TX_PLL_FILTER5)
> +		    & 0xc0)) {
> +			dev_dbg(dev, "3.3V output enabled\n");
> +			break;
> +		}
> +
> +		dev_dbg(dev, "VBUS power can not be supplied\n");

Why print this five times?

> +	}
> +}
> +
> +void sp_tx_clean_state_machine(void)
> +{
> +	sp.tx_system_state = STATE_WAITTING_CABLE_PLUG;
> +	sp.tx_system_state_bak = STATE_WAITTING_CABLE_PLUG;
> +	sp.tx_sc_state = SC_INIT;
> +	sp.tx_lt_state = LT_INIT;
> +	sp.hcdp_state = HDCP_CAPABLE_CHECK;
> +	sp.tx_vo_state = VO_WAIT_VIDEO_STABLE;
> +	sp.tx_ao_state = AO_INIT;
> +}
> +
> +u8 sp_tx_cur_states(void)
> +{
> +	return sp.tx_system_state;
> +}
> +
> +void sp_tx_variable_init(void)
> +{
> +	u16 i;
> +
> +	sp.block_en = 1;
> +
> +	sp.tx_system_state = STATE_WAITTING_CABLE_PLUG;
> +	sp.tx_system_state_bak = STATE_WAITTING_CABLE_PLUG;
> +
> +	sp.edid_break = 0;
> +	sp.read_edid_flag = 0;
> +	sp.edid_checksum = 0;
> +	for (i = 0; i < 256; i++)
> +		sp.edid_blocks[i] = 0;
> +
> +	sp.tx_lt_state = LT_INIT;
> +	sp.hcdp_state = HDCP_CAPABLE_CHECK;
> +	sp.need_clean_status = 0;
> +	sp.tx_sc_state = SC_INIT;
> +	sp.tx_vo_state = VO_WAIT_VIDEO_STABLE;
> +	sp.tx_ao_state = AO_INIT;
> +	sp.changed_bandwidth = LINK_5P4G;
> +	sp.hdmi_dvi_status = HDMI_MODE;
> +
> +	sp.tx_test_lt = 0;
> +	sp.tx_test_bw = 0;
> +	sp.tx_test_edid = 0;
> +
> +	sp.ds_vid_stb_cntr = 0;
> +	sp.hdcp_fail_count = 0;
> +
> +}
> +
> +static void hdmi_rx_tmds_phy_initialization(struct anx78xx *anx78xx)
> +{
> +	sp_write_reg(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG2, 0xa9);
> +	sp_write_reg(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG7, 0x80);
> +
> +	sp_write_reg(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG1, 0x90);
> +	sp_write_reg(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG6, 0x92);
> +	sp_write_reg(anx78xx, RX_P0, HDMI_RX_TMDS_CTRL_REG20, 0xf2);
> +}
> +
> +static void hdmi_rx_initialization(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	sp_write_reg(anx78xx, RX_P0, RX_MUTE_CTRL, AUD_MUTE | VID_MUTE);
> +	sp_write_reg_or(anx78xx, RX_P0, RX_CHIP_CTRL,
> +		MAN_HDMI5V_DET | PLLLOCK_CKDT_EN | DIGITAL_CKDT_EN);
> +
> +	sp_write_reg_or(anx78xx, RX_P0, RX_SRST, HDCP_MAN_RST | SW_MAN_RST |
> +		TMDS_RST | VIDEO_RST);
> +	sp_write_reg_and(anx78xx, RX_P0, RX_SRST, ~HDCP_MAN_RST &
> +		~SW_MAN_RST & ~TMDS_RST & ~VIDEO_RST);
> +
> +	sp_write_reg_or(anx78xx, RX_P0, RX_AEC_EN0, AEC_EN06 | AEC_EN05);
> +	sp_write_reg_or(anx78xx, RX_P0, RX_AEC_EN2, AEC_EN21);
> +	sp_write_reg_or(anx78xx, RX_P0, RX_AEC_CTRL, AVC_EN | AAC_OE | AAC_EN);
> +
> +	sp_write_reg_and(anx78xx, RX_P0, RX_SYS_PWDN1, ~PWDN_CTRL);
> +
> +	sp_write_reg_or(anx78xx, RX_P0, RX_VID_DATA_RNG, R2Y_INPUT_LIMIT);
> +	sp_write_reg(anx78xx, RX_P0, 0x65, 0xc4);
> +	sp_write_reg(anx78xx, RX_P0, 0x66, 0x18);
> +
> +	/* enable DDC stretch */
> +	sp_write_reg(anx78xx, TX_P0, TX_EXTRA_ADDR, 0x50);
> +
> +	hdmi_rx_tmds_phy_initialization(anx78xx);
> +	hdmi_rx_set_hpd(anx78xx, 0);
> +	hdmi_rx_set_termination(anx78xx, 0);
> +	dev_dbg(dev, "HDMI Rx is initialized...\n");

Delete.  Use ftrace.

> +}
> +
> +struct anx78xx_clock_data const pxtal_data[XTAL_CLK_NUM] = {
> +	{19, 192},
> +	{24, 240},
> +	{25, 250},
> +	{26, 260},
> +	{27, 270},
> +	{38, 384},
> +	{52, 520},
> +	{27, 270},
> +};
> +
> +static void xtal_clk_sel(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	dev_dbg(dev, "define XTAL_CLK:  %x\n ", (u16)XTAL_27M);
> +	sp_write_reg_and_or(anx78xx, TX_P2,
> +			TX_ANALOG_DEBUG2, (~0x3c), 0x3c & (XTAL_27M << 2));
> +	sp_write_reg(anx78xx, TX_P0, 0xEC, (u8)(((u16)XTAL_CLK_M10)));

Remove the superflous casts to u16.

> +	sp_write_reg(anx78xx, TX_P0, 0xED,
> +		(u8)(((u16)XTAL_CLK_M10 & 0xFF00) >> 2) | XTAL_CLK);
> +
> +	sp_write_reg(anx78xx, TX_P0,
> +			I2C_GEN_10US_TIMER0, (u8)(((u16)XTAL_CLK_M10)));
> +	sp_write_reg(anx78xx, TX_P0, I2C_GEN_10US_TIMER1,
> +			(u8)(((u16)XTAL_CLK_M10 & 0xFF00) >> 8));
> +	sp_write_reg(anx78xx, TX_P0, 0xBF, (u8)(((u16)XTAL_CLK - 1)));
> +
> +	sp_write_reg_and_or(anx78xx, RX_P0, 0x49, 0x07,
> +			(u8)(((((u16)XTAL_CLK) >> 1) - 2) << 3));
> +
> +}
> +
> +void sp_tx_initialization(struct anx78xx *anx78xx)
> +{
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL2, 0x30);
> +	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, 0x08);
> +
> +	sp_write_reg_and(anx78xx, TX_P0, TX_HDCP_CTRL,
> +			(u8)(~AUTO_EN) & (~AUTO_START));
> +	sp_write_reg(anx78xx, TX_P0, OTP_KEY_PROTECT1, OTP_PSW1);
> +	sp_write_reg(anx78xx, TX_P0, OTP_KEY_PROTECT2, OTP_PSW2);
> +	sp_write_reg(anx78xx, TX_P0, OTP_KEY_PROTECT3, OTP_PSW3);
> +	sp_write_reg_or(anx78xx, TX_P0, HDCP_KEY_CMD, DISABLE_SYNC_HDCP);
> +	sp_write_reg(anx78xx, TX_P2, SP_TX_VID_CTRL8_REG, VID_VRES_TH);
> +
> +	sp_write_reg(anx78xx, TX_P0, HDCP_AUTO_TIMER, HDCP_AUTO_TIMER_VAL);
> +	sp_write_reg_or(anx78xx, TX_P0, TX_HDCP_CTRL, LINK_POLLING);
> +
> +	sp_write_reg_or(anx78xx, TX_P0, TX_LINK_DEBUG, M_VID_DEBUG);
> +	sp_write_reg_or(anx78xx, TX_P2, TX_ANALOG_DEBUG2, POWERON_TIME_1P5MS);
> +
> +	xtal_clk_sel(anx78xx);
> +	sp_write_reg(anx78xx, TX_P0, AUX_DEFER_CTRL, 0x8C);
> +
> +	sp_write_reg_or(anx78xx, TX_P0, TX_DP_POLLING, AUTO_POLLING_DISABLE);
> +	/*
> +	 * Short the link intergrity check timer to speed up bstatus
> +	 * polling for HDCP CTS item 1A-07
> +	 */
> +	sp_write_reg(anx78xx, TX_P0, SP_TX_LINK_CHK_TIMER, 0x1d);
> +	sp_write_reg_or(anx78xx, TX_P0, TX_MISC, EQ_TRAINING_LOOP);
> +
> +	sp_write_reg_or(anx78xx, TX_P0, SP_TX_ANALOG_PD_REG, CH0_PD);
> +
> +	sp_write_reg(anx78xx, TX_P2, SP_TX_INT_CTRL_REG, 0X01);
> +	/* disable HDCP mismatch function for VGA dongle */
> +	sp_tx_link_phy_initialization(anx78xx);
> +	gen_m_clk_with_downspeading(anx78xx);
> +
> +	sp.down_sample_en = 0;
> +}
> +
> +bool sp_chip_detect(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u16 id;
> +	u8 idh = 0, idl = 0;
> +	int i;
> +
> +	anx78xx_poweron(anx78xx);
> +
> +	/* check chip id */
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_DEV_IDL_REG, &idl);
> +	sp_read_reg(anx78xx, TX_P2, SP_TX_DEV_IDH_REG, &idh);
> +	id = idl | (idh << 8);
> +
> +	dev_dbg(dev, "CHIPID: ANX%x\n", id & 0xffff);
> +
> +	for (i = 0; i < sizeof(chipid_list) / sizeof(u16); i++) {

	for (i = 0; i < ARRAY_SIZE(chipid_list); i++) {

> +		if (id == chipid_list[i])
> +			return true;
> +	}
> +
> +	return false;
> +}
> +
> +static void sp_waiting_cable_plug_process(struct anx78xx *anx78xx)
> +{
> +	sp_tx_variable_init();
> +	anx78xx_poweron(anx78xx);
> +	goto_next_system_state(anx78xx);
> +}
> +
> +/*
> + * Check if it is ANALOGIX dongle.
> + */
> +static const u8 ANX_OUI[3] = {0x00, 0x22, 0xB9};
> +
> +static u8 is_anx_dongle(struct anx78xx *anx78xx)
> +{
> +	u8 buf[3];
> +
> +	/* 0x0500~0x0502: BRANCH_IEEE_OUI */
> +	sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x05, 0x00, 3, buf);
> +
> +	if (!memcmp(buf, ANX_OUI, 3))
> +		return 1;
> +
> +	return 0;
> +}
> +
> +static void sp_tx_get_rx_bw(struct anx78xx *anx78xx, u8 *bw)
> +{
> +	if (is_anx_dongle(anx78xx))
> +		*bw = LINK_6P75G;	/* just for debug */
> +	else
> +		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00,
> +					DPCD_MAX_LINK_RATE, 1, bw);
> +}
> +
> +static u8 sp_tx_get_cable_type(struct anx78xx *anx78xx,
> +			enum cable_type_status det_cable_type_state)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	u8 ds_port_preset;
> +	u8 aux_status;
> +	u8 data_buf[16];
> +	u8 cur_cable_type;
> +
> +	ds_port_preset = 0;
> +	cur_cable_type = DWN_STRM_IS_NULL;
> +
> +	aux_status = sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00, 0x05, 1,
> +					&ds_port_preset);
> +
> +	dev_dbg(dev, "DPCD 0x005: %x\n", (int)ds_port_preset);
> +
> +	switch (det_cable_type_state) {
> +	case CHECK_AUXCH:
> +		if (AUX_OK == aux_status) {
> +			sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00, 0, 0x0c,
> +					data_buf);
> +			det_cable_type_state = GETTED_CABLE_TYPE;
> +		} else {
> +			dev_err(dev, " AUX access error\n");
> +			break;
> +		}
> +	case GETTED_CABLE_TYPE:
> +		switch ((ds_port_preset  & (BIT(1) | BIT(2))) >> 1) {

Extra space char.

		switch ((ds_port_preset & (BIT(1) | BIT(2))) >> 1) {

> +		case 0x00:
> +			cur_cable_type = DWN_STRM_IS_DIGITAL;
> +			dev_dbg(dev, "Downstream is DP dongle.\n");
> +			break;
> +		case 0x01:
> +		case 0x03:
> +			cur_cable_type = DWN_STRM_IS_ANALOG;
> +			dev_dbg(dev, "Downstream is VGA dongle.\n");
> +			break;
> +		case 0x02:
> +			cur_cable_type = DWN_STRM_IS_HDMI;
> +			dev_dbg(dev, "Downstream is HDMI dongle.\n");
> +			break;
> +		default:
> +			cur_cable_type = DWN_STRM_IS_NULL;
> +			dev_err(dev, "Downstream can not recognized.\n");
> +			break;
> +		}
> +	default:
> +		break;
> +	}
> +	return cur_cable_type;
> +}
> +
> +static u8 sp_tx_get_dp_connection(struct anx78xx *anx78xx)
> +{
> +	u8 c;
> +
> +	if (AUX_OK != sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x02,
> +				DPCD_SINK_COUNT, 1, &c))
> +		return 0;
> +
> +	if (c & 0x1f) {
> +		sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x00, 0x04, 1, &c);
> +		if (c & 0x20) {
> +			sp_tx_aux_dpcdread_bytes(anx78xx, 0x00, 0x06, 0x00, 1,
> +						&c);
> +			/*
> +			 * Bit 5 = SET_DN_DEVICE_DP_PWR_5V
> +			 * Bit 6 = SET_DN_DEVICE_DP_PWR_12V
> +			 * Bit 7 = SET_DN_DEVICE_DP_PWR_18V
> +			 */
> +			c = c & 0x1F;
> +			sp_tx_aux_dpcdwrite_byte(anx78xx, 0x00, 0x06, 0x00,
> +						c | 0x20);
> +		}
> +		return 1;
> +	} else
> +		return 0;
> +}
> +
> +static u8 sp_tx_get_downstream_connection(struct anx78xx *anx78xx)
> +{
> +	return sp_tx_get_dp_connection(anx78xx);
> +}
> +
> +static void sp_sink_connection(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +
> +	switch (sp.tx_sc_state) {
> +	case SC_INIT:
> +		sp.tx_sc_state++;
> +	case SC_CHECK_CABLE_TYPE:
> +	case SC_WAITTING_CABLE_TYPE:
> +	default:
> +		if (sp_tx_get_cable_type(anx78xx, CHECK_AUXCH) ==
> +		   DWN_STRM_IS_NULL) {
> +			sp.tx_sc_state++;
> +			if (sp.tx_sc_state >= SC_WAITTING_CABLE_TYPE) {
> +				sp.tx_sc_state = SC_NOT_CABLE;
> +				dev_dbg(dev, "Can not get cable type!\n");
> +			}
> +			break;
> +		}
> +
> +		sp.tx_sc_state = SC_SINK_CONNECTED;
> +	case SC_SINK_CONNECTED:
> +		if (sp_tx_get_downstream_connection(anx78xx))
> +			goto_next_system_state(anx78xx);
> +		break;
> +	case SC_NOT_CABLE:
> +		sp_vbus_power_off(anx78xx);
> +		reg_hardware_reset(anx78xx);
> +		break;
> +	}
> +}
> +
> +/******************start EDID process********************/
> +static void sp_tx_enable_video_input(struct anx78xx *anx78xx, u8 enable)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 c;
> +
> +	sp_read_reg(anx78xx, TX_P2, VID_CTRL1, &c);
> +	if (enable) {
> +		c = (c & 0xf7) | VIDEO_EN;
> +		sp_write_reg(anx78xx, TX_P2, VID_CTRL1, c);
> +		dev_dbg(dev, "Slimport Video is enabled!\n");
> +
> +	} else {
> +		c &= ~VIDEO_EN;
> +		sp_write_reg(anx78xx, TX_P2, VID_CTRL1, c);
> +		dev_dbg(dev, "Slimport Video is disabled!\n");
> +	}
> +}
> +
> +static u8 sp_get_edid_detail(u8 *data_buf)
> +{
> +	u16 pixclock_edid;
> +
> +	pixclock_edid = ((((u16)data_buf[1] << 8))
> +			| ((u16)data_buf[0] & 0xFF));
> +	if (pixclock_edid <= 5300)
> +		return LINK_1P62G;
> +	else if ((pixclock_edid > 5300) && (pixclock_edid <= 8900))
> +		return LINK_2P7G;
> +	else if ((pixclock_edid > 8900) && (pixclock_edid <= 18000))
> +		return LINK_5P4G;
> +	else
> +		return LINK_6P75G;
> +}
> +
> +static u8 sp_parse_edid_to_get_bandwidth(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 desc_offset = 0;
> +	u8 i, bandwidth, temp;
> +
> +	bandwidth = LINK_1P62G;
> +	temp = LINK_1P62G;
> +	i = 0;
> +	while (i < 4 && sp.edid_blocks[0x36 + desc_offset] != 0) {
> +		temp = sp_get_edid_detail(sp.edid_blocks + 0x36 + desc_offset);
> +		dev_dbg(dev, "bandwidth via EDID : %x\n", (u16)temp);
> +		if (bandwidth < temp)
> +			bandwidth = temp;
> +		if (bandwidth > LINK_5P4G)
> +			break;
> +		desc_offset += 0x12;
> +		++i;
> +	}
> +	return bandwidth;
> +}
> +
> +static void sp_tx_aux_wr(struct anx78xx *anx78xx, u8 offset)
> +{
> +	sp_write_reg(anx78xx, TX_P0, BUF_DATA_0, offset);
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, 0x04);
> +	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, AUX_OP_EN);
> +	sp_wait_aux_op_finish(anx78xx, &sp.edid_break);
> +}
> +
> +static void sp_tx_aux_rd(struct anx78xx *anx78xx, u8 len_cmd)
> +{
> +	sp_write_reg(anx78xx, TX_P0, AUX_CTRL, len_cmd);
> +	sp_write_reg_or(anx78xx, TX_P0, AUX_CTRL2, AUX_OP_EN);
> +	sp_wait_aux_op_finish(anx78xx, &sp.edid_break);
> +}
> +
> +static u8 sp_tx_get_edid_block(struct anx78xx *anx78xx)
> +{
> +	struct device *dev = &anx78xx->client->dev;
> +	u8 c;
> +
> +	sp_tx_aux_wr(anx78xx, 0x7e);
> +	sp_tx_aux_rd(anx78xx, 0x01);
> +	sp_read_reg(anx78xx, TX_P0, BUF_DATA_0, &c);
> +	dev_dbg(dev, "EDID Block = %d\n", (int)(c + 1));
> +
> +	if (c > 3)
> +		c = 1;
> +	return c;
> +}
> +
> +static void sp_edid_read(struct anx78xx *anx78xx, u8 offset,
> +			u8 *pblock_buf)
> +{
> +	u8 data_cnt, cnt;
> +	u8 c;
> +
> +	sp_tx_aux_wr(anx78xx, offset);
> +	sp_tx_aux_rd(anx78xx, 0xf5);
> +	data_cnt = 0;
> +	cnt = 0;
> +
> +	while ((data_cnt) < 16)	{
> +		sp_read_reg(anx78xx, TX_P0, BUF_DATA_COUNT, &c);
> +
> +		if ((c & 0x1f) != 0) {

Double negative.  The right times to compare == 0 and != 0 are with
*cmp() functions and when talking about zero as a number.  Here zero is
a boolean so it should just be "if (c & 0x1f) {"

> +			data_cnt = data_cnt + c;
> +			do {
> +				sp_read_reg(anx78xx, TX_P0, BUF_DATA_0 + c - 1,
> +					&(pblock_buf[c - 1]));
> +				if (c == 1)
> +					break;
> +			} while (c--);

The "if (c == 1)" condition means that c is a number 2-255 so this
"while (c--)" condition is always true.  Remove the earlier condition
and do this instead:

			} while (--c)

Anyway, gotta run.

regards,
dan carpenter