[RFC 2/2] [media] platform: Add Synopsys Designware HDMI RX Controller Driver

[Jose Abreu]

This is an initial submission for the Synopsys Designware HDMI RX
Controller Driver. This driver interacts with a phy driver so that
a communication between them is created and a video pipeline is
configured.

The controller + phy pipeline can then be integrated into a fully
featured system that can be able to receive video up to 4k@60Hz
with deep color 48bit RGB, depending on the platform. Althoug,
this initial version does not yet handle deep color modes.

This driver was implemented as a standard V4L2 subdevice and its
main features are:
	- Internal state machine that reconfigures phy until the
	video is not stable
	- JTAG communication with phy
	- Inter-module communication with phy driver
	- Debug write/read ioctls

Some notes:
	- RX sense controller (cable connection/disconnection) must
	be handled by the platform wrapper as this is not integrated
	into the controller RTL
	- The same goes for EDID ROM's
	- ZCAL calibration is needed only in FPGA platforms, in ASIC
	this is not needed
	- The state machine is not an ideal solution as it creates a
	kthread but it is needed because some sources might not be
	very stable at sending the video (i.e. we must react
	accordingly).

Signed-off-by: Jose Abreu <joabreu@xxxxxxxxxxxx>
Cc: Carlos Palminha <palminha@xxxxxxxxxxxx>
Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
Cc: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: linux-media@xxxxxxxxxxxxxxx
---
 drivers/media/platform/dwc/Kconfig      |    9 +
 drivers/media/platform/dwc/Makefile     |    1 +
 drivers/media/platform/dwc/dw-hdmi-rx.c | 1396 +++++++++++++++++++++++++++++++
 drivers/media/platform/dwc/dw-hdmi-rx.h |  313 +++++++
 include/media/dwc/dw-hdmi-rx-pdata.h    |   50 ++
 5 files changed, 1769 insertions(+)
 create mode 100644 drivers/media/platform/dwc/dw-hdmi-rx.c
 create mode 100644 drivers/media/platform/dwc/dw-hdmi-rx.h
 create mode 100644 include/media/dwc/dw-hdmi-rx-pdata.h

diff --git a/drivers/media/platform/dwc/Kconfig b/drivers/media/platform/dwc/Kconfig
index 361d38d..11efa23 100644
--- a/drivers/media/platform/dwc/Kconfig
+++ b/drivers/media/platform/dwc/Kconfig
@@ -6,3 +6,12 @@ config VIDEO_DWC_HDMI_PHY_E405
 
 	  To compile this driver as a module, choose M here. The module
 	  will be called dw-hdmi-phy-e405.
+
+config VIDEO_DWC_HDMI_RX
+	tristate "Synopsys Designware HDMI Receiver driver"
+	depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
+	help
+	  Support for Synopsys Designware HDMI RX controller.
+
+	  To compile this driver as a module, choose M here. The module
+	  will be called dw-hdmi-rx.
diff --git a/drivers/media/platform/dwc/Makefile b/drivers/media/platform/dwc/Makefile
index fc3b62c..cd04ca9 100644
--- a/drivers/media/platform/dwc/Makefile
+++ b/drivers/media/platform/dwc/Makefile
@@ -1 +1,2 @@
 obj-$(CONFIG_VIDEO_DWC_HDMI_PHY_E405) += dw-hdmi-phy-e405.o
+obj-$(CONFIG_VIDEO_DWC_HDMI_RX) += dw-hdmi-rx.o
diff --git a/drivers/media/platform/dwc/dw-hdmi-rx.c b/drivers/media/platform/dwc/dw-hdmi-rx.c
new file mode 100644
index 0000000..6bfbc86
--- /dev/null
+++ b/drivers/media/platform/dwc/dw-hdmi-rx.c
@@ -0,0 +1,1396 @@
+/*
+ * Synopsys Designware HDMI Receiver controller driver
+ *
+ * This Synopsys dw-hdmi-rx software and associated documentation
+ * (hereinafter the "Software") is an unsupported proprietary work of
+ * Synopsys, Inc. unless otherwise expressly agreed to in writing between
+ * Synopsys and you. The Software IS NOT an item of Licensed Software or a
+ * Licensed Product under any End User Software License Agreement or
+ * Agreement for Licensed Products with Synopsys or any supplement thereto.
+ * Synopsys is a registered trademark of Synopsys, Inc. Other names included
+ * in the SOFTWARE may be the trademarks of their respective owners.
+ *
+ * The contents of this file are dual-licensed; you may select either version 2
+ * of the GNU General Public License (âGPLâ) or the MIT license (âMITâ).
+ *
+ * Copyright (c) 2017 Synopsys, Inc. and/or its affiliates.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS"  WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING, BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE
+ * ARISING FROM, OUT OF, OR IN CONNECTION WITH THE SOFTWARE THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/v4l2-dv-timings.h>
+#include <linux/workqueue.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-dv-timings.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-subdev.h>
+#include <media/dwc/dw-hdmi-phy-pdata.h>
+#include <media/dwc/dw-hdmi-rx-pdata.h>
+#include "dw-hdmi-rx.h"
+
+#define HDMI_DEFAULT_TIMING		V4L2_DV_BT_CEA_640X480P59_94
+
+MODULE_AUTHOR("Carlos Palminha <palminha@xxxxxxxxxxxx>");
+MODULE_AUTHOR("Jose Abreu <joabreu@xxxxxxxxxxxx>");
+MODULE_DESCRIPTION("Designware HDMI Receiver driver");
+MODULE_LICENSE("Dual MIT/GPL");
+MODULE_ALIAS("platform:" DW_HDMI_RX_DRVNAME);
+
+static const struct v4l2_dv_timings_cap dw_hdmi_timings_cap = {
+	.type = V4L2_DV_BT_656_1120,
+	.reserved = { 0 },
+	V4L2_INIT_BT_TIMINGS(
+			640, 4096,		/* min/max width */
+			480, 4455,		/* min/max height */
+			20000000, 594000000,	/* min/max pixelclock */
+			V4L2_DV_BT_STD_CEA861,	/* standards */
+			/* capabilities */
+			V4L2_DV_BT_CAP_PROGRESSIVE
+	)
+};
+
+static const struct v4l2_event dw_hdmi_event_fmt = {
+	.type = V4L2_EVENT_SOURCE_CHANGE,
+	.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
+};
+
+enum dw_hdmi_state {
+	HDMI_STATE_NO_INIT = 0,
+	HDMI_STATE_POWER_OFF,
+	HDMI_STATE_PHY_CONFIG,
+	HDMI_STATE_CONTROLLER_CONFIG,
+	HDMI_STATE_EQUALIZER,
+	HDMI_STATE_VIDEO_UNSTABLE,
+	HDMI_STATE_POWER_ON,
+};
+
+struct dw_hdmi_dev {
+	struct dw_hdmi_rx_pdata *config;
+	struct workqueue_struct *wq;
+	enum dw_hdmi_state state;
+	bool pending_config;
+	bool force_off;
+	spinlock_t lock;
+	void __iomem *regs;
+	struct device_node *of_node;
+	struct v4l2_subdev sd;
+	struct v4l2_dv_timings timings;
+	struct v4l2_device v4l2_dev;
+	struct dw_phy_pdata phy_config;
+	struct platform_device *phy_pdev;
+	struct v4l2_subdev *phy_sd;
+	bool phy_eq_force;
+	u8 phy_jtag_addr;
+	const char *phy_drv;
+	struct device *dev;
+	u32 mbus_code;
+	unsigned int selected_input;
+	unsigned int configured_input;
+	u32 cfg_clk;
+};
+
+static const char *get_state_name(enum dw_hdmi_state state)
+{
+	switch (state) {
+	case HDMI_STATE_NO_INIT:
+		return "NO_INIT";
+	case HDMI_STATE_POWER_OFF:
+		return "POWER_OFF";
+	case HDMI_STATE_PHY_CONFIG:
+		return "PHY_CONFIG";
+	case HDMI_STATE_CONTROLLER_CONFIG:
+		return "CONTROLLER_CONFIG";
+	case HDMI_STATE_EQUALIZER:
+		return "EQUALIZER";
+	case HDMI_STATE_VIDEO_UNSTABLE:
+		return "VIDEO_UNSTABLE";
+	case HDMI_STATE_POWER_ON:
+		return "POWER_ON";
+	default:
+		return "UNKNOWN";
+	}
+}
+
+static inline void dw_hdmi_set_state(struct dw_hdmi_dev *dw_dev,
+		enum dw_hdmi_state new_state)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&dw_dev->lock, flags);
+	dev_dbg(dw_dev->dev, "old_state=%s, new_state=%s\n",
+			get_state_name(dw_dev->state),
+			get_state_name(new_state));
+	dw_dev->state = new_state;
+	spin_unlock_irqrestore(&dw_dev->lock, flags);
+}
+
+static inline struct dw_hdmi_dev *to_dw_dev(struct v4l2_subdev *sd)
+{
+	return container_of(sd, struct dw_hdmi_dev, sd);
+}
+
+static inline void hdmi_writel(struct dw_hdmi_dev *dw_dev, u32 val, int reg)
+{
+	writel(val, dw_dev->regs + reg);
+}
+
+static inline u32 hdmi_readl(struct dw_hdmi_dev *dw_dev, int reg)
+{
+	return readl(dw_dev->regs + reg);
+}
+
+static void hdmi_modl(struct dw_hdmi_dev *dw_dev, u32 data, u32 mask, int reg)
+{
+	u32 val = hdmi_readl(dw_dev, reg) & ~mask;
+
+	val |= data & mask;
+	hdmi_writel(dw_dev, val, reg);
+}
+
+static void hdmi_mask_writel(struct dw_hdmi_dev *dw_dev, u32 data, int reg,
+		u32 shift, u32 mask)
+{
+	hdmi_modl(dw_dev, data << shift, mask, reg);
+}
+
+static u32 hdmi_mask_readl(struct dw_hdmi_dev *dw_dev, int reg, u32 shift,
+		u32 mask)
+{
+	return (hdmi_readl(dw_dev, reg) & mask) >> shift;
+}
+
+static bool dw_hdmi_5v_status(struct dw_hdmi_dev *dw_dev, int input)
+{
+	void __iomem *arg = dw_dev->config->dw_5v_arg;
+
+	if (dw_dev->config->dw_5v_status)
+		return dw_dev->config->dw_5v_status(arg, input);
+	return false;
+}
+
+static void dw_hdmi_5v_clear(struct dw_hdmi_dev *dw_dev)
+{
+	void __iomem *arg = dw_dev->config->dw_5v_arg;
+
+	if (dw_dev->config->dw_5v_clear)
+		dw_dev->config->dw_5v_clear(arg);
+}
+
+static inline bool is_off(struct dw_hdmi_dev *dw_dev)
+{
+	return dw_dev->state <= HDMI_STATE_POWER_OFF;
+}
+
+static bool has_signal(struct dw_hdmi_dev *dw_dev, unsigned int input)
+{
+	return dw_hdmi_5v_status(dw_dev, input);
+}
+
+#define HDMI_JTAG_TAP_ADDR_CMD		0
+#define HDMI_JTAG_TAP_WRITE_CMD		1
+#define HDMI_JTAG_TAP_READ_CMD		3
+
+static void hdmi_phy_jtag_send_pulse(struct dw_hdmi_dev *dw_dev, u8 tms, u8 tdi)
+{
+	u8 val;
+
+	val = tms ? HDMI_PHY_JTAG_TAP_IN_TMS : 0;
+	val |= tdi ? HDMI_PHY_JTAG_TAP_IN_TDI : 0;
+
+	hdmi_writel(dw_dev, 0, HDMI_PHY_JTAG_TAP_TCLK);
+	hdmi_writel(dw_dev, val, HDMI_PHY_JTAG_TAP_IN);
+	hdmi_writel(dw_dev, 1, HDMI_PHY_JTAG_TAP_TCLK);
+}
+
+static void hdmi_phy_jtag_shift_dr(struct dw_hdmi_dev *dw_dev)
+{
+	hdmi_phy_jtag_send_pulse(dw_dev, 1, 0);
+	hdmi_phy_jtag_send_pulse(dw_dev, 0, 0);
+	hdmi_phy_jtag_send_pulse(dw_dev, 0, 0);
+}
+
+static void hdmi_phy_jtag_shift_ir(struct dw_hdmi_dev *dw_dev)
+{
+	hdmi_phy_jtag_send_pulse(dw_dev, 1, 0);
+	hdmi_phy_jtag_send_pulse(dw_dev, 1, 0);
+	hdmi_phy_jtag_send_pulse(dw_dev, 0, 0);
+	hdmi_phy_jtag_send_pulse(dw_dev, 0, 0);
+}
+
+static u16 hdmi_phy_jtag_send(struct dw_hdmi_dev *dw_dev, u8 cmd, u16 val)
+{
+	u32 in = (cmd << 16) | val;
+	u16 out = 0;
+	int i;
+
+	for (i = 0; i < 16; i++) {
+		hdmi_phy_jtag_send_pulse(dw_dev, 0, in & 0x1);
+		out |= (hdmi_readl(dw_dev, HDMI_PHY_JTAG_TAP_OUT) & 0x1) << i;
+		in >>= 1;
+	}
+
+	hdmi_phy_jtag_send_pulse(dw_dev, 0, in & 0x1);
+	in >>= 1;
+	hdmi_phy_jtag_send_pulse(dw_dev, 1, in & 0x1);
+
+	out |= (hdmi_readl(dw_dev, HDMI_PHY_JTAG_TAP_OUT) & 0x1) << ++i;
+	return out;
+}
+
+static void hdmi_phy_jtag_idle(struct dw_hdmi_dev *dw_dev)
+{
+	hdmi_phy_jtag_send_pulse(dw_dev, 1, 0);
+	hdmi_phy_jtag_send_pulse(dw_dev, 0, 0);
+}
+
+static void hdmi_phy_jtag_init(struct dw_hdmi_dev *dw_dev, u8 addr)
+{
+	int i;
+
+	hdmi_writel(dw_dev, addr, HDMI_PHY_JTAG_ADDR);
+	/* reset */
+	hdmi_writel(dw_dev, 0x10, HDMI_PHY_JTAG_TAP_IN);
+	hdmi_writel(dw_dev, 0x0, HDMI_PHY_JTAG_CONF);
+	hdmi_writel(dw_dev, 0x1, HDMI_PHY_JTAG_CONF);
+	hdmi_phy_jtag_send_pulse(dw_dev, 0, 0);
+	/* soft reset */
+	for (i = 0; i < 5; i++)
+		hdmi_phy_jtag_send_pulse(dw_dev, 1, 0);
+	hdmi_phy_jtag_send_pulse(dw_dev, 0, 0);
+	/* set slave address */
+	hdmi_phy_jtag_shift_ir(dw_dev);
+	for (i = 0; i < 7; i++) {
+		hdmi_phy_jtag_send_pulse(dw_dev, 0, addr & 0x1);
+		addr >>= 1;
+	}
+	hdmi_phy_jtag_send_pulse(dw_dev, 1, addr & 0x1);
+	hdmi_phy_jtag_idle(dw_dev);
+}
+
+static void hdmi_phy_jtag_write(struct dw_hdmi_dev *dw_dev, u16 val, u16 addr)
+{
+	hdmi_phy_jtag_shift_dr(dw_dev);
+	hdmi_phy_jtag_send(dw_dev, HDMI_JTAG_TAP_ADDR_CMD, addr << 8);
+	hdmi_phy_jtag_idle(dw_dev);
+	hdmi_phy_jtag_shift_dr(dw_dev);
+	hdmi_phy_jtag_send(dw_dev, HDMI_JTAG_TAP_WRITE_CMD, val);
+	hdmi_phy_jtag_idle(dw_dev);
+}
+
+static u16 hdmi_phy_jtag_read(struct dw_hdmi_dev *dw_dev, u16 addr)
+{
+	u16 val;
+
+	hdmi_phy_jtag_shift_dr(dw_dev);
+	hdmi_phy_jtag_send(dw_dev, HDMI_JTAG_TAP_ADDR_CMD, addr << 8);
+	hdmi_phy_jtag_idle(dw_dev);
+	hdmi_phy_jtag_shift_dr(dw_dev);
+	val = hdmi_phy_jtag_send(dw_dev, HDMI_JTAG_TAP_READ_CMD, 0xFFFF);
+	hdmi_phy_jtag_idle(dw_dev);
+	
+	return val;
+}
+
+static void dw_hdmi_phy_write(void *arg, u16 val, u16 addr)
+{
+	struct dw_hdmi_dev *dw_dev = arg;
+	u16 rval;
+
+	hdmi_phy_jtag_init(dw_dev, dw_dev->phy_jtag_addr);
+	hdmi_phy_jtag_write(dw_dev, val, addr);
+	rval = hdmi_phy_jtag_read(dw_dev, addr);
+
+	if (rval != val) {
+		dev_err(dw_dev->dev,
+			"JTAG read-back failed: expected=0x%x, got=0x%x\n",
+			val, rval);
+	}
+}
+
+static u16 dw_hdmi_phy_read(void *arg, u16 addr)
+{
+	struct dw_hdmi_dev *dw_dev = arg;
+
+	hdmi_phy_jtag_init(dw_dev, dw_dev->phy_jtag_addr);
+	return hdmi_phy_jtag_read(dw_dev, addr);
+}
+
+static void dw_hdmi_phy_reset(void *arg, int enable)
+{
+	struct dw_hdmi_dev *dw_dev = arg;
+
+	hdmi_mask_writel(dw_dev, enable, HDMI_PHY_CTRL,
+			HDMI_PHY_CTRL_RESET_OFFSET,
+			HDMI_PHY_CTRL_RESET_MASK);
+}
+
+static void dw_hdmi_phy_pddq(void *arg, int enable)
+{
+	struct dw_hdmi_dev *dw_dev = arg;
+
+	hdmi_mask_writel(dw_dev, enable, HDMI_PHY_CTRL,
+			HDMI_PHY_CTRL_PDDQ_OFFSET,
+			HDMI_PHY_CTRL_PDDQ_MASK);
+}
+
+static void dw_hdmi_phy_svsmode(void *arg, int enable)
+{
+	struct dw_hdmi_dev *dw_dev = arg;
+
+	hdmi_mask_writel(dw_dev, enable, HDMI_PHY_CTRL,
+			HDMI_PHY_CTRL_SVSRETMODEZ_OFFSET,
+			HDMI_PHY_CTRL_SVSRETMODEZ_MASK);
+}
+
+static void dw_hdmi_zcal_reset(void *arg)
+{
+	struct dw_hdmi_dev *dw_dev = arg;
+
+	if (dw_dev->config->dw_zcal_reset)
+		dw_dev->config->dw_zcal_reset(dw_dev->config->dw_zcal_arg);
+}
+
+static bool dw_hdmi_zcal_done(void *arg)
+{
+	struct dw_hdmi_dev *dw_dev = arg;
+
+	if (dw_dev->config->dw_zcal_done)
+		return dw_dev->config->dw_zcal_done(dw_dev->config->dw_zcal_arg);
+	return true;
+}
+
+static bool dw_hdmi_tmds_valid(void *arg)
+{
+	struct dw_hdmi_dev *dw_dev = arg;
+
+	return hdmi_readl(dw_dev, HDMI_PLL_LCK_STS) & HDMI_PLL_LCK_STS_PLL_LOCKED;
+}
+
+static const struct dw_phy_funcs dw_hdmi_phy_funcs = {
+	.write = dw_hdmi_phy_write,
+	.read = dw_hdmi_phy_read,
+	.reset = dw_hdmi_phy_reset,
+	.pddq = dw_hdmi_phy_pddq,
+	.svsmode = dw_hdmi_phy_svsmode,
+	.zcal_reset = dw_hdmi_zcal_reset,
+	.zcal_done = dw_hdmi_zcal_done,
+	.tmds_valid = dw_hdmi_tmds_valid,
+};
+
+static int dw_hdmi_phy_init(struct dw_hdmi_dev *dw_dev)
+{
+	struct dw_phy_pdata *phy = &dw_dev->phy_config;
+	struct platform_device_info pdevinfo;
+
+	memset(&pdevinfo, 0, sizeof(pdevinfo));
+
+	phy->funcs = &dw_hdmi_phy_funcs;
+	phy->funcs_arg = dw_dev;
+
+	pdevinfo.parent = dw_dev->dev;
+	pdevinfo.id = PLATFORM_DEVID_NONE;
+	pdevinfo.name = dw_dev->phy_drv;
+	pdevinfo.data = phy;
+	pdevinfo.size_data = sizeof(*phy);
+	pdevinfo.dma_mask = DMA_BIT_MASK(32);
+
+	request_module(pdevinfo.name);
+
+	dw_dev->phy_pdev = platform_device_register_full(&pdevinfo);
+	if (IS_ERR(dw_dev->phy_pdev)) {
+		dev_err(dw_dev->dev, "failed to register phy device\n");
+		return PTR_ERR(dw_dev->phy_pdev);
+	}
+
+	if (!dw_dev->phy_pdev->dev.driver) {
+		dev_err(dw_dev->dev, "failed to initialize phy driver\n");
+		goto err;
+	}
+
+	if (!try_module_get(dw_dev->phy_pdev->dev.driver->owner)) {
+		dev_err(dw_dev->dev, "failed to get phy module\n");
+		goto err;
+	}
+
+	dw_dev->phy_sd = dev_get_drvdata(&dw_dev->phy_pdev->dev);
+	if (!dw_dev->phy_sd) {
+		dev_err(dw_dev->dev, "failed to get phy subdev\n");
+		goto err_put;
+	}
+
+	if (v4l2_device_register_subdev(&dw_dev->v4l2_dev, dw_dev->phy_sd)) {
+		dev_err(dw_dev->dev, "failed to register phy subdev\n");
+		goto err_put;
+	}
+
+	module_put(dw_dev->phy_pdev->dev.driver->owner);
+	return 0;
+
+err_put:
+	module_put(dw_dev->phy_pdev->dev.driver->owner);
+err:
+	platform_device_unregister(dw_dev->phy_pdev);
+	return -EINVAL;
+}
+
+static void dw_hdmi_phy_exit(struct dw_hdmi_dev *dw_dev)
+{
+	if (!IS_ERR(dw_dev->phy_pdev))
+		platform_device_unregister(dw_dev->phy_pdev);
+}
+
+static int dw_hdmi_phy_eq_init(struct dw_hdmi_dev *dw_dev, u16 acq, bool force)
+{
+	struct dw_phy_command cmd = {
+		.result = 0,
+		.nacq = acq,
+		.force = force,
+	};
+	int ret;
+
+	ret = v4l2_subdev_call(dw_dev->phy_sd, core, ioctl,
+			DW_PHY_IOCTL_EQ_INIT, &cmd);
+	if (ret)
+		return ret;
+	return cmd.result;
+}
+
+static int dw_hdmi_phy_config(struct dw_hdmi_dev *dw_dev, unsigned char res,
+		bool hdmi2, bool scrambling)
+{
+	struct dw_phy_command cmd = {
+		.result = 0,
+		.res = res,
+		.hdmi2 = hdmi2,
+		.scrambling = scrambling,
+	};
+	int ret;
+
+	if (dw_dev->phy_config.version >= 401) {
+		hdmi_mask_writel(dw_dev, 0x1, HDMI_CBUSIOCTRL,
+				HDMI_CBUSIOCTRL_DATAPATH_CBUSZ_OFFSET,
+				HDMI_CBUSIOCTRL_DATAPATH_CBUSZ_MASK);
+		hdmi_mask_writel(dw_dev, 0x1, HDMI_CBUSIOCTRL,
+				HDMI_CBUSIOCTRL_SVSRETMODEZ_OFFSET,
+				HDMI_CBUSIOCTRL_SVSRETMODEZ_MASK);
+		hdmi_mask_writel(dw_dev, 0x1, HDMI_CBUSIOCTRL,
+				HDMI_CBUSIOCTRL_PDDQ_OFFSET,
+				HDMI_CBUSIOCTRL_PDDQ_MASK);
+		hdmi_mask_writel(dw_dev, 0x1, HDMI_CBUSIOCTRL,
+				HDMI_CBUSIOCTRL_RESET_OFFSET,
+				HDMI_CBUSIOCTRL_RESET_MASK);
+	}
+
+	ret = v4l2_subdev_call(dw_dev->phy_sd, core, ioctl,
+			DW_PHY_IOCTL_CONFIG, &cmd);
+	if (ret)
+		return ret;
+	return cmd.result;
+}
+
+static void dw_hdmi_phy_s_power(struct dw_hdmi_dev *dw_dev, bool on)
+{
+	v4l2_subdev_call(dw_dev->phy_sd, core, s_power, on);
+}
+
+static int dw_hdmi_wait_phy_lock_poll(struct dw_hdmi_dev *dw_dev)
+{
+	int timeout = 10;
+
+	while (!dw_hdmi_tmds_valid(dw_dev) && timeout-- && !dw_dev->force_off)
+		usleep_range(5000, 10000);
+
+	if (!dw_hdmi_tmds_valid(dw_dev))
+		return -ETIMEDOUT;
+	return 0;
+}
+
+static void dw_hdmi_reset_datapath(struct dw_hdmi_dev *dw_dev)
+{
+	u32 val = HDMI_DMI_SW_RST_TMDS |
+		HDMI_DMI_SW_RST_HDCP |
+		HDMI_DMI_SW_RST_VID |
+		HDMI_DMI_SW_RST_PIXEL |
+		HDMI_DMI_SW_RST_CEC |
+		HDMI_DMI_SW_RST_AUD |
+		HDMI_DMI_SW_RST_BUS |
+		HDMI_DMI_SW_RST_HDMI |
+		HDMI_DMI_SW_RST_MODET;
+
+	hdmi_writel(dw_dev, val, HDMI_DMI_SW_RST);
+}
+
+static void dw_hdmi_enable_ints(struct dw_hdmi_dev *dw_dev)
+{
+	hdmi_writel(dw_dev, HDMI_ISTS_CLK_CHANGE | HDMI_ISTS_PLL_LCK_CHG,
+			HDMI_IEN_SET);
+	hdmi_writel(dw_dev, ~0x0, HDMI_MD_IEN_SET);
+}
+
+static void dw_hdmi_disable_ints(struct dw_hdmi_dev *dw_dev)
+{
+	hdmi_writel(dw_dev, ~0x0, HDMI_IEN_CLR);
+	hdmi_writel(dw_dev, ~0x0, HDMI_MD_IEN_CLR);
+}
+
+static void dw_hdmi_clear_ints(struct dw_hdmi_dev *dw_dev)
+{
+	hdmi_writel(dw_dev, ~0x0, HDMI_ICLR);
+	hdmi_writel(dw_dev, ~0x0, HDMI_MD_ICLR);
+}
+
+static u8 dw_hdmi_get_curr_vic(struct dw_hdmi_dev *dw_dev)
+{
+	return hdmi_mask_readl(dw_dev, HDMI_PDEC_AVI_PB,
+			HDMI_PDEC_AVI_PB_VID_IDENT_CODE_OFFSET,
+			HDMI_PDEC_AVI_PB_VID_IDENT_CODE_MASK) & 0xff;
+}
+
+static u64 dw_hdmi_get_pixelclk(struct dw_hdmi_dev *dw_dev)
+{
+	u32 rate = hdmi_mask_readl(dw_dev, HDMI_CKM_RESULT,
+			HDMI_CKM_RESULT_CLKRATE_OFFSET,
+			HDMI_CKM_RESULT_CLKRATE_MASK);
+	u32 evaltime = hdmi_mask_readl(dw_dev, HDMI_CKM_EVLTM,
+			HDMI_CKM_EVLTM_EVAL_TIME_OFFSET,
+			HDMI_CKM_EVLTM_EVAL_TIME_MASK);
+	u64 tmp = (u64)rate * (u64)dw_dev->cfg_clk * 1000000;
+
+	do_div(tmp, evaltime);
+	return tmp;
+}
+
+static u32 dw_hdmi_get_colordepth(struct dw_hdmi_dev *dw_dev)
+{
+	u32 dcm = hdmi_mask_readl(dw_dev, HDMI_STS,
+			HDMI_STS_DCM_CURRENT_MODE_OFFSET,
+			HDMI_STS_DCM_CURRENT_MODE_MASK);
+
+	switch (dcm) {
+	case 0x4:
+		return 24;
+	case 0x5:
+		return 30;
+	case 0x6:
+		return 36;
+	case 0x7:
+		return 48;
+	default:
+		return 0;
+	}
+}
+
+static void dw_hdmi_set_input(struct dw_hdmi_dev *dw_dev, u32 input)
+{
+	hdmi_mask_writel(dw_dev, input, HDMI_PHY_CTRL,
+			HDMI_PHY_CTRL_PORTSELECT_OFFSET,
+			HDMI_PHY_CTRL_PORTSELECT_MASK);
+}
+
+static void dw_hdmi_enable_hpd(struct dw_hdmi_dev *dw_dev, u32 input)
+{
+	switch (input) {
+	case 0:
+	case 1:
+	case 2:
+	case 3:
+		break;
+	default:
+		return;
+	}
+
+	hdmi_mask_writel(dw_dev, BIT(input), HDMI_SETUP_CTRL,
+			HDMI_SETUP_CTRL_HOT_PLUG_DETECT_INPUT_X_OFFSET,
+			HDMI_SETUP_CTRL_HOT_PLUG_DETECT_INPUT_X_MASK);
+	hdmi_mask_writel(dw_dev, 0x1, HDMI_SETUP_CTRL,
+			HDMI_SETUP_CTRL_HOT_PLUG_DETECT_OFFSET,
+			HDMI_SETUP_CTRL_HOT_PLUG_DETECT_MASK);
+}
+
+static void dw_hdmi_disable_hpd(struct dw_hdmi_dev *dw_dev)
+{
+	hdmi_mask_writel(dw_dev, 0x0, HDMI_SETUP_CTRL,
+			HDMI_SETUP_CTRL_HOT_PLUG_DETECT_INPUT_X_OFFSET,
+			HDMI_SETUP_CTRL_HOT_PLUG_DETECT_INPUT_X_MASK);
+	hdmi_mask_writel(dw_dev, 0x0, HDMI_SETUP_CTRL,
+			HDMI_SETUP_CTRL_HOT_PLUG_DETECT_OFFSET,
+			HDMI_SETUP_CTRL_HOT_PLUG_DETECT_MASK);
+}
+
+static int dw_hdmi_config(struct dw_hdmi_dev *dw_dev, u32 input)
+{
+	int eqret, ret = 0;
+
+	while (1) {
+		/* Give up silently if we are forcing off */
+		if (dw_dev->force_off) {
+			ret = 0;
+			goto out;
+		}
+		/* Give up silently if input has disconnected */
+		if (!has_signal(dw_dev, input)) {
+			ret = 0;
+			goto out;
+		}
+
+		switch (dw_dev->state) {
+		case HDMI_STATE_POWER_OFF:
+			dw_hdmi_disable_ints(dw_dev);
+			dw_hdmi_set_state(dw_dev, HDMI_STATE_PHY_CONFIG);
+			break;
+		case HDMI_STATE_PHY_CONFIG:
+			dw_hdmi_phy_s_power(dw_dev, true);
+			dw_hdmi_phy_config(dw_dev, 8, false, false);
+			dw_hdmi_set_state(dw_dev, HDMI_STATE_CONTROLLER_CONFIG);
+			break;
+		case HDMI_STATE_CONTROLLER_CONFIG:
+			dw_hdmi_set_input(dw_dev, input);
+			dw_hdmi_enable_hpd(dw_dev, input);
+			dw_hdmi_set_state(dw_dev, HDMI_STATE_EQUALIZER);
+			break;
+		case HDMI_STATE_EQUALIZER:
+			eqret = dw_hdmi_phy_eq_init(dw_dev, 5,
+					dw_dev->phy_eq_force);
+			ret = dw_hdmi_wait_phy_lock_poll(dw_dev);
+
+			/* Do not force equalizer */
+			dw_dev->phy_eq_force = false;
+
+			if (ret || eqret) {
+				if (ret || eqret == -ETIMEDOUT) {
+					/* No TMDSVALID signal:
+					 * 	- force equalizer */
+					dw_dev->phy_eq_force = true;
+				}
+				break;
+			}
+
+			dw_hdmi_set_state(dw_dev, HDMI_STATE_VIDEO_UNSTABLE);
+			break;
+		case HDMI_STATE_VIDEO_UNSTABLE:
+			dw_hdmi_reset_datapath(dw_dev);
+			dw_hdmi_enable_ints(dw_dev);
+			dw_hdmi_set_state(dw_dev, HDMI_STATE_POWER_ON);
+			break;
+		case HDMI_STATE_POWER_ON:
+			break;
+		default:
+			dev_err(dw_dev->dev, "%s called with state (%d)\n",
+					__func__, dw_dev->state);
+			ret = -EINVAL;
+			goto out;
+		}
+
+		if (dw_dev->state == HDMI_STATE_POWER_ON) {
+			dev_info(dw_dev->dev, "HDMI-RX configured\n");
+			v4l2_subdev_notify_event(&dw_dev->sd,
+					&dw_hdmi_event_fmt);
+			return 0;
+		}
+	}
+
+out:
+	dw_hdmi_set_state(dw_dev, HDMI_STATE_POWER_OFF);
+	return ret;
+}
+
+static int dw_hdmi_config_hdcp(struct dw_hdmi_dev *dw_dev)
+{
+	hdmi_mask_writel(dw_dev, 0x0, HDMI_HDCP22_CONTROL,
+			HDMI_HDCP22_CONTROL_OVR_VAL_OFFSET,
+			HDMI_HDCP22_CONTROL_OVR_VAL_MASK);
+	hdmi_mask_writel(dw_dev, 0x1, HDMI_HDCP22_CONTROL,
+			HDMI_HDCP22_CONTROL_OVR_EN_OFFSET,
+			HDMI_HDCP22_CONTROL_OVR_EN_MASK);
+	return 0;
+}
+
+static int __dw_hdmi_power_on(struct dw_hdmi_dev *dw_dev, u32 input)
+{
+	unsigned long flags;
+	int ret;
+
+	ret = dw_hdmi_config(dw_dev, input);
+
+	spin_lock_irqsave(&dw_dev->lock, flags);
+	dw_dev->pending_config = false;
+	spin_unlock_irqrestore(&dw_dev->lock, flags);
+
+	return ret;
+}
+
+struct dw_hdmi_work_data {
+	struct dw_hdmi_dev *dw_dev;
+	struct work_struct work;
+	u32 input;
+};
+
+static void dw_hdmi_work_handler(struct work_struct *work)
+{
+	struct dw_hdmi_work_data *data = container_of(work,
+			struct dw_hdmi_work_data, work);
+
+	__dw_hdmi_power_on(data->dw_dev, data->input);
+	devm_kfree(data->dw_dev->dev, data);
+}
+
+static int dw_hdmi_power_on(struct dw_hdmi_dev *dw_dev, u32 input)
+{
+	struct dw_hdmi_work_data *data;
+	unsigned long flags;
+
+	data = devm_kzalloc(dw_dev->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	INIT_WORK(&data->work, dw_hdmi_work_handler);
+	data->dw_dev = dw_dev;
+	data->input = input;
+
+	spin_lock_irqsave(&dw_dev->lock, flags);
+	if (dw_dev->pending_config) {
+		devm_kfree(dw_dev->dev, data);
+		spin_unlock_irqrestore(&dw_dev->lock, flags);
+		return 0;
+	}
+
+	queue_work(dw_dev->wq, &data->work);
+	dw_dev->pending_config = true;
+	spin_unlock_irqrestore(&dw_dev->lock, flags);
+	return 0;
+}
+
+static void dw_hdmi_power_off(struct dw_hdmi_dev *dw_dev)
+{
+	unsigned long flags;
+
+	dw_dev->force_off = true;
+	flush_workqueue(dw_dev->wq);
+	dw_dev->force_off = false;
+
+	spin_lock_irqsave(&dw_dev->lock, flags);
+	dw_dev->pending_config = false;
+	dw_dev->state = HDMI_STATE_POWER_OFF;
+	spin_unlock_irqrestore(&dw_dev->lock, flags);
+
+	/* Reset variables */
+	dw_dev->phy_eq_force = true;
+}
+
+static u32 dw_hdmi_get_int_val(struct dw_hdmi_dev *dw_dev, u32 ists, u32 ien)
+{
+	return hdmi_readl(dw_dev, ists) & hdmi_readl(dw_dev, ien);
+}
+
+static irqreturn_t dw_hdmi_irq_handler(int irq, void *dev_data)
+{
+	struct dw_hdmi_dev *dw_dev = dev_data;
+	u32 hdmi_ists = dw_hdmi_get_int_val(dw_dev, HDMI_ISTS, HDMI_IEN);
+	u32 md_ists = dw_hdmi_get_int_val(dw_dev, HDMI_MD_ISTS, HDMI_MD_IEN);
+
+	dw_hdmi_clear_ints(dw_dev);
+
+	if ((hdmi_ists & HDMI_ISTS_CLK_CHANGE) ||
+	    (hdmi_ists & HDMI_ISTS_PLL_LCK_CHG) || md_ists) {
+		dw_hdmi_power_off(dw_dev);
+		if (has_signal(dw_dev, dw_dev->configured_input))
+			dw_hdmi_power_on(dw_dev, dw_dev->configured_input);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static void dw_hdmi_detect_tx_5v(struct dw_hdmi_dev *dw_dev)
+{
+	unsigned int input_count = 4; /* TODO: Get from DT node this value */
+	unsigned int old_input = dw_dev->configured_input;
+	unsigned int new_input = old_input;
+	bool pending_config = false, current_on = true;
+	int i;
+
+	if (!has_signal(dw_dev, old_input)) {
+		dw_hdmi_disable_ints(dw_dev);
+		dw_hdmi_disable_hpd(dw_dev);
+		dw_hdmi_power_off(dw_dev);
+		current_on = false;
+	}
+
+	for (i = 0; i < input_count; i++) {
+		bool on = has_signal(dw_dev, i);
+
+		if (is_off(dw_dev) && on && !pending_config) {
+			dw_hdmi_power_on(dw_dev, i);
+			new_input = i;
+			pending_config = true;
+		}
+	}
+
+	if ((new_input == old_input) && !pending_config && !current_on)
+		dw_hdmi_phy_s_power(dw_dev, false);
+
+	dev_dbg(dw_dev->dev, "%s: %d%d%d%d\n", __func__,
+			dw_hdmi_5v_status(dw_dev, 0),
+			dw_hdmi_5v_status(dw_dev, 1),
+			dw_hdmi_5v_status(dw_dev, 2),
+			dw_hdmi_5v_status(dw_dev, 3));
+}
+
+static irqreturn_t dw_hdmi_5v_irq_handler(int irq, void *dev_data)
+{
+	struct dw_hdmi_dev *dw_dev = dev_data;
+
+	dw_hdmi_detect_tx_5v(dw_dev);
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t dw_hdmi_5v_hard_irq_handler(int irq, void *dev_data)
+{
+	struct dw_hdmi_dev *dw_dev = dev_data;
+
+	dev_dbg(dw_dev->dev, "%s\n", __func__);
+	dw_hdmi_5v_clear(dw_dev);
+	return IRQ_WAKE_THREAD;
+}
+
+static int dw_hdmi_s_routing(struct v4l2_subdev *sd, u32 input, u32 output,
+		u32 config)
+{
+	struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+	if (!has_signal(dw_dev, input))
+		return -EINVAL;
+
+	dw_dev->selected_input = input;
+	if (input == dw_dev->configured_input)
+		return 0;
+
+	dw_hdmi_power_off(dw_dev);
+	return dw_hdmi_power_on(dw_dev, input);
+}
+
+static int dw_hdmi_g_input_status(struct v4l2_subdev *sd, u32 *status)
+{
+	struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+	*status = 0;
+	if (!has_signal(dw_dev, dw_dev->selected_input))
+		*status |= V4L2_IN_ST_NO_POWER;
+	if (is_off(dw_dev))
+		*status |= V4L2_IN_ST_NO_SIGNAL;
+
+	dev_dbg(dw_dev->dev, "%s: status=0x%x\n", __func__, *status);
+	return 0;
+}
+
+static int dw_hdmi_g_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parm)
+{
+	struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+	dev_dbg(dw_dev->dev, "%s\n", __func__);
+
+	/* TODO: Use helper to compute timeperframe */
+	parm->parm.capture.timeperframe.numerator = 1;
+	parm->parm.capture.timeperframe.denominator = 60;
+	return 0;
+}
+
+static int dw_hdmi_g_dv_timings(struct v4l2_subdev *sd,
+		struct v4l2_dv_timings *timings)
+{
+	struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+	dev_dbg(dw_dev->dev, "%s\n", __func__);
+
+	memset(timings, 0, sizeof(*timings));
+	*timings = dw_dev->timings;
+	return 0;
+}
+
+static int dw_hdmi_query_dv_timings(struct v4l2_subdev *sd,
+		struct v4l2_dv_timings *timings)
+{
+	struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+	struct v4l2_bt_timings *bt = &timings->bt;
+	u32 htot, hofs;
+	u32 vtot;
+	u8 vic;
+
+	dev_dbg(dw_dev->dev, "%s\n", __func__);
+
+	memset(timings, 0, sizeof(*timings));
+
+	timings->type = V4L2_DV_BT_656_1120;
+	bt->width = hdmi_readl(dw_dev, HDMI_MD_HACT_PX);
+	bt->height = hdmi_readl(dw_dev, HDMI_MD_VAL);
+	bt->interlaced = 0;
+
+	if (hdmi_readl(dw_dev, HDMI_ISTS) & HDMI_ISTS_VS_POL_ADJ)
+		bt->polarities |= V4L2_DV_VSYNC_POS_POL;
+	if (hdmi_readl(dw_dev, HDMI_ISTS) & HDMI_ISTS_HS_POL_ADJ)
+		bt->polarities |= V4L2_DV_HSYNC_POS_POL;
+
+	bt->pixelclock = dw_hdmi_get_pixelclk(dw_dev);
+
+	/* HTOT = HACT + HFRONT + HSYNC + HBACK */
+	htot = hdmi_mask_readl(dw_dev, HDMI_MD_HT1,
+			HDMI_MD_HT1_HTOT_PIX_OFFSET,
+			HDMI_MD_HT1_HTOT_PIX_MASK);
+	/* HOFS = HSYNC + HBACK */
+	hofs = hdmi_mask_readl(dw_dev, HDMI_MD_HT1,
+			HDMI_MD_HT1_HOFS_PIX_OFFSET,
+			HDMI_MD_HT1_HOFS_PIX_MASK);
+
+	bt->hfrontporch = htot - hofs - bt->width;
+	bt->hsync = hdmi_mask_readl(dw_dev, HDMI_MD_HT0,
+			HDMI_MD_HT0_HS_CLK_OFFSET,
+			HDMI_MD_HT0_HS_CLK_MASK);
+	bt->hbackporch = hofs - bt->hsync;
+
+	/* VTOT = VACT + VFRONT + VSYNC + VBACK */
+	vtot = hdmi_readl(dw_dev, HDMI_MD_VTL);
+
+	hdmi_mask_writel(dw_dev, 0x1, HDMI_MD_VCTRL,
+			HDMI_MD_VCTRL_V_OFFS_LIN_MODE_OFFSET,
+			HDMI_MD_VCTRL_V_OFFS_LIN_MODE_MASK);
+	mdelay(50);
+	bt->vsync = hdmi_readl(dw_dev, HDMI_MD_VOL);
+
+	hdmi_mask_writel(dw_dev, 0x0, HDMI_MD_VCTRL,
+			HDMI_MD_VCTRL_V_OFFS_LIN_MODE_OFFSET,
+			HDMI_MD_VCTRL_V_OFFS_LIN_MODE_MASK);
+	mdelay(50);
+	bt->vbackporch = hdmi_readl(dw_dev, HDMI_MD_VOL);
+	bt->vfrontporch = vtot - bt->height - bt->vsync - bt->vbackporch;
+	bt->standards = V4L2_DV_BT_STD_CEA861;
+
+	vic = dw_hdmi_get_curr_vic(dw_dev);
+	if (vic) {
+		bt->flags |= V4L2_DV_FL_HAS_CEA861_VIC;
+		bt->cea861_vic = vic;
+	}
+
+	return 0;
+}
+
+static int dw_hdmi_enum_mbus_code(struct v4l2_subdev *sd,
+		struct v4l2_subdev_pad_config *cfg,
+		struct v4l2_subdev_mbus_code_enum *code)
+{
+	struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+	dev_dbg(dw_dev->dev, "%s\n", __func__);
+	if (code->index != 0)
+		return -EINVAL;
+
+	code->code = dw_dev->mbus_code;
+	return 0;
+}
+
+static int dw_hdmi_fill_format(struct dw_hdmi_dev *dw_dev,
+		struct v4l2_mbus_framefmt *format)
+{
+	memset(format, 0, sizeof(*format));
+
+	format->width = dw_dev->timings.bt.width;
+	format->height = dw_dev->timings.bt.height;
+	format->colorspace = V4L2_COLORSPACE_SRGB;
+	format->code = dw_dev->mbus_code;
+	if (dw_dev->timings.bt.interlaced)
+		format->field = V4L2_FIELD_ALTERNATE;
+	else
+		format->field = V4L2_FIELD_NONE;
+
+	return 0;
+}
+
+static int dw_hdmi_get_fmt(struct v4l2_subdev *sd,
+		struct v4l2_subdev_pad_config *cfg,
+		struct v4l2_subdev_format *format)
+{
+	struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+	dev_dbg(dw_dev->dev, "%s\n", __func__);
+	return dw_hdmi_fill_format(dw_dev, &format->format);
+}
+
+static int dw_hdmi_set_fmt(struct v4l2_subdev *sd,
+		struct v4l2_subdev_pad_config *cfg,
+		struct v4l2_subdev_format *format)
+{
+	struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+	dev_dbg(dw_dev->dev, "%s\n", __func__);
+
+	if (format->format.code != dw_dev->mbus_code) {
+		dev_dbg(dw_dev->dev, "invalid format\n");
+		return -EINVAL;
+	}
+
+	return dw_hdmi_get_fmt(sd, cfg, format);
+}
+
+static int dw_hdmi_dv_timings_cap(struct v4l2_subdev *sd,
+		struct v4l2_dv_timings_cap *cap)
+{
+	struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+	unsigned int pad = cap->pad;
+
+	dev_dbg(dw_dev->dev, "%s\n", __func__);
+
+	*cap = dw_hdmi_timings_cap;
+	cap->pad = pad;
+	return 0;
+}
+
+static bool dw_hdmi_check_dv_timings(const struct v4l2_dv_timings *t, void *hdl)
+{
+	return true;
+}
+
+static int dw_hdmi_enum_dv_timings(struct v4l2_subdev *sd,
+		struct v4l2_enum_dv_timings *timings)
+{
+	struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+	dev_dbg(dw_dev->dev, "%s\n", __func__);
+	return v4l2_enum_dv_timings_cap(timings, &dw_hdmi_timings_cap,
+			dw_hdmi_check_dv_timings, NULL);
+}
+
+static int dw_hdmi_log_status(struct v4l2_subdev *sd)
+{
+	struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+	struct v4l2_dv_timings timings;
+
+	v4l2_info(sd, "--- Chip configuration ---\n");
+	v4l2_info(sd, "cfg_clk=%dMHz\n", dw_dev->cfg_clk);
+	v4l2_info(sd, "phy_drv=%s, phy_jtag_addr=0x%x\n", dw_dev->phy_drv,
+			dw_dev->phy_jtag_addr);
+	v4l2_info(sd, "--- Chip status ---\n");
+	v4l2_info(sd, "selected_input=%d: signal=%d\n", dw_dev->selected_input,
+			has_signal(dw_dev, dw_dev->selected_input));
+	v4l2_info(sd, "configured_input=%d: signal=%d\n",
+			dw_dev->configured_input,
+			has_signal(dw_dev, dw_dev->configured_input));
+	v4l2_info(sd, "--- Video status ---\n");
+	v4l2_info(sd, "type=%s\n, color_depth=%dbits",
+			hdmi_readl(dw_dev, HDMI_PDEC_STS) &
+			HDMI_PDEC_STS_DVIDET ? "dvi" : "hdmi",
+			dw_hdmi_get_colordepth(dw_dev));
+	v4l2_info(sd, "--- Video timings ---\n");
+	if (dw_hdmi_query_dv_timings(sd, &timings))
+		v4l2_info(sd, "No video detected\n");
+	else
+		v4l2_print_dv_timings(sd->name, "Detected format: ",
+				&timings, true);
+	v4l2_print_dv_timings(sd->name, "Configured format: ",
+			&dw_dev->timings, true);
+	return 0;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static void dw_hdmi_invalid_register(struct dw_hdmi_dev *dw_dev, u64 reg)
+{
+	dev_err(dw_dev->dev, "register 0x%llx not supported\n", reg);
+	dev_err(dw_dev->dev, "0x0000-0x7fff: Main controller map\n");
+	dev_err(dw_dev->dev, "0x8000-0x80ff: PHY map\n");
+}
+
+static int dw_hdmi_g_register(struct v4l2_subdev *sd,
+		struct v4l2_dbg_register *reg)
+{
+	struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+	switch (reg->reg >> 15) {
+	case 0: /* Controller core read */
+		reg->size = 4;
+		reg->val = hdmi_readl(dw_dev, reg->reg & 0x7fff);
+		return 0;
+	case 1: /* PHY read */
+		if ((reg->reg & ~0xff) != BIT(15))
+			break;
+
+		reg->size = 2;
+		reg->val = dw_hdmi_phy_read(dw_dev, reg->reg & 0xff);
+		return 0;
+	default:
+		break;
+	}
+
+	dw_hdmi_invalid_register(dw_dev, reg->reg);
+	return 0;
+}
+
+static int dw_hdmi_s_register(struct v4l2_subdev *sd,
+		const struct v4l2_dbg_register *reg)
+{
+	struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+	switch (reg->reg >> 15) {
+	case 0: /* Controller core write */
+		hdmi_writel(dw_dev, reg->val & GENMASK(31,0), reg->reg & 0x7fff);
+		return 0;
+	case 1: /* PHY write */
+		if ((reg->reg & ~0xff) != BIT(15))
+			break;
+		dw_hdmi_phy_write(dw_dev, reg->val & 0xffff, reg->reg & 0xff);
+		return 0;
+	default:
+		break;
+	}
+
+	dw_hdmi_invalid_register(dw_dev, reg->reg);
+	return 0;
+}
+#endif
+
+static int dw_hdmi_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
+		struct v4l2_event_subscription *sub)
+{
+	switch (sub->type) {
+	case V4L2_EVENT_SOURCE_CHANGE:
+		return v4l2_src_change_event_subdev_subscribe(sd, fh, sub);
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct v4l2_subdev_core_ops dw_hdmi_sd_core_ops = {
+	.log_status = dw_hdmi_log_status,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+	.g_register = dw_hdmi_g_register,
+	.s_register = dw_hdmi_s_register,
+#endif
+	.subscribe_event = dw_hdmi_subscribe_event,
+};
+
+static const struct v4l2_subdev_video_ops dw_hdmi_sd_video_ops = {
+	.s_routing = dw_hdmi_s_routing,
+	.g_input_status = dw_hdmi_g_input_status,
+	.g_parm = dw_hdmi_g_parm,
+	.g_dv_timings = dw_hdmi_g_dv_timings,
+	.query_dv_timings = dw_hdmi_query_dv_timings,
+};
+
+static const struct v4l2_subdev_pad_ops dw_hdmi_sd_pad_ops = {
+	.enum_mbus_code = dw_hdmi_enum_mbus_code,
+	.get_fmt = dw_hdmi_get_fmt,
+	.set_fmt = dw_hdmi_set_fmt,
+	.dv_timings_cap = dw_hdmi_dv_timings_cap,
+	.enum_dv_timings = dw_hdmi_enum_dv_timings,
+};
+
+static const struct v4l2_subdev_ops dw_hdmi_sd_ops = {
+	.core = &dw_hdmi_sd_core_ops,
+	.video = &dw_hdmi_sd_video_ops,
+	.pad = &dw_hdmi_sd_pad_ops,
+};
+
+static int dw_hdmi_parse_dt(struct dw_hdmi_dev *dw_dev)
+{
+	struct dw_phy_pdata *phy = &dw_dev->phy_config;
+	struct device_node *np = dw_dev->of_node;
+
+	if (!np) {
+		dev_err(dw_dev->dev, "missing DT node\n");
+		return -EINVAL;
+	}
+
+	/* PHY properties parsing */
+	of_property_read_u8(np, "snps,hdmi-phy-jtag-addr",
+			&dw_dev->phy_jtag_addr);
+	if (!dw_dev->phy_jtag_addr) {
+		dev_err(dw_dev->dev, "missing hdmi-phy-jtag-addr in DT\n");
+		return -EINVAL;
+	}
+
+	of_property_read_u32(np, "snps,hdmi-phy-version", &phy->version);
+	if (!phy->version) {
+		dev_err(dw_dev->dev, "missing hdmi-phy-version in DT\n");
+		return -EINVAL;
+	}
+
+	of_property_read_u32(np, "snps,hdmi-phy-cfg-clk", &phy->cfg_clk);
+	if (!phy->cfg_clk) {
+		dev_err(dw_dev->dev, "missing hdmi-phy-cfg-clk in DT\n");
+		return -EINVAL;
+	}
+
+	if (of_property_read_string_index(np, "snps,hdmi-phy-driver", 0,
+				&dw_dev->phy_drv) < 0) {
+		dev_err(dw_dev->dev, "missing hdmi-phy-driver in DT\n");
+		return -EINVAL;
+	}
+
+	/* Controller properties parsing */
+	of_property_read_u32(np, "snps,hdmi-ctl-cfg-clk", &dw_dev->cfg_clk);
+	if (!dw_dev->cfg_clk) {
+		dev_err(dw_dev->dev, "missing hdmi-ctl-cfg-clk in DT\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int dw_hdmi_rx_probe(struct platform_device *pdev)
+{
+	const struct v4l2_dv_timings timings_def = HDMI_DEFAULT_TIMING;
+	struct dw_hdmi_rx_pdata *pdata = pdev->dev.platform_data;
+	struct device *dev = &pdev->dev;
+	struct dw_hdmi_dev *dw_dev;
+	struct v4l2_subdev *sd;
+	struct resource *res;
+	int ret, irq;
+
+	dev_dbg(dev, "%s\n", __func__);
+
+	/* Resource allocation */
+	dw_dev = devm_kzalloc(dev, sizeof(*dw_dev), GFP_KERNEL);
+	if (!dw_dev)
+		return -ENOMEM;
+
+	/* Resource initialization */
+	if (!pdata) {
+		dev_err(dev, "missing platform data\n");
+		return -EINVAL;
+	}
+
+	dw_dev->dev = dev;
+	dw_dev->config = pdata;
+	dw_dev->state = HDMI_STATE_NO_INIT;
+	dw_dev->of_node = dev->of_node ? dev->of_node : dev->parent->of_node;
+	spin_lock_init(&dw_dev->lock);
+
+	/* Device Tree parsing */
+	ret = dw_hdmi_parse_dt(dw_dev);
+	if (ret)
+		return ret;
+
+	/* Deferred work */
+	dw_dev->wq = create_workqueue(DW_HDMI_RX_DRVNAME);
+	if (!dw_dev->wq)
+		return -ENOMEM;
+
+	/* Registers mapping */
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		ret = -ENXIO;
+		goto err_wq;
+	}
+
+	dw_dev->regs = devm_ioremap_resource(dev, res);
+	if (IS_ERR(dw_dev->regs)) {
+		ret = PTR_ERR(dw_dev->regs);
+		goto err_wq;
+	}
+
+	/* Disable HPD as soon as posssible */
+	dw_hdmi_disable_hpd(dw_dev);
+
+	/* Configure HDCP */
+	ret = dw_hdmi_config_hdcp(dw_dev);
+	if (ret)
+		goto err_wq;
+
+	/* Interrupts mapping */
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		ret = irq;
+		goto err_wq;
+	}
+
+	ret = devm_request_threaded_irq(dev, irq, NULL, dw_hdmi_irq_handler,
+			IRQF_ONESHOT, DW_HDMI_RX_DRVNAME, dw_dev);
+	if (ret)
+		goto err_wq;
+
+	irq = platform_get_irq(pdev, 1);
+	if (irq < 0) {
+		ret = irq;
+		goto err_wq;
+	}
+
+	ret = devm_request_threaded_irq(dev, irq, dw_hdmi_5v_hard_irq_handler,
+			dw_hdmi_5v_irq_handler, IRQF_ONESHOT,
+			DW_HDMI_RX_DRVNAME "-5v-handler", dw_dev);
+	if (ret)
+		goto err_wq;
+
+	/* V4L2 initialization */
+	sd = &dw_dev->sd;
+	v4l2_subdev_init(sd, &dw_hdmi_sd_ops);
+	strlcpy(sd->name, DW_HDMI_RX_DRVNAME, sizeof(sd->name));
+	sd->flags |= V4L2_SUBDEV_FL_HAS_EVENTS;
+
+	/* V4L2 device for phy subdev */
+	strlcpy(dw_dev->v4l2_dev.name, DW_HDMI_RX_DRVNAME,
+			sizeof(dw_dev->v4l2_dev.name));
+	ret = v4l2_device_register(NULL, &dw_dev->v4l2_dev);
+	if (ret) {
+		dev_err(dev, "failed to register v4l2 device\n");
+		goto err_wq;
+	}
+
+	/* Phy loading */
+	ret = dw_hdmi_phy_init(dw_dev);
+	if (ret)
+		goto err_v4l2_dev;
+
+	/* Fill initial format settings */
+	dw_dev->timings = timings_def;
+	dw_dev->mbus_code = MEDIA_BUS_FMT_BGR888_1X24;
+
+	/* All done */
+	dev_set_drvdata(dev, sd);
+	dw_dev->state = HDMI_STATE_POWER_OFF;
+	dw_hdmi_detect_tx_5v(dw_dev);
+	dev_info(dev, "driver probed\n");
+	return 0;
+
+err_v4l2_dev:
+	v4l2_device_unregister(&dw_dev->v4l2_dev);
+err_wq:
+	destroy_workqueue(dw_dev->wq);
+	return ret;
+}
+
+static int dw_hdmi_rx_remove(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct v4l2_subdev *sd = dev_get_drvdata(dev);
+	struct dw_hdmi_dev *dw_dev = to_dw_dev(sd);
+
+	dev_dbg(dev, "%s\n", __func__);
+
+	dw_hdmi_disable_ints(dw_dev);
+	dw_hdmi_disable_hpd(dw_dev);
+	dw_hdmi_power_off(dw_dev);
+	dw_hdmi_phy_s_power(dw_dev, false);
+	flush_workqueue(dw_dev->wq);
+	destroy_workqueue(dw_dev->wq);
+	v4l2_device_unregister(&dw_dev->v4l2_dev);
+	dw_hdmi_phy_exit(dw_dev);
+	dev_info(dev, "driver removed\n");
+	return 0;
+}
+
+static struct platform_driver dw_hdmi_rx_driver = {
+	.probe = dw_hdmi_rx_probe,
+	.remove = dw_hdmi_rx_remove,
+	.driver = {
+		.name = DW_HDMI_RX_DRVNAME,
+	}
+};
+module_platform_driver(dw_hdmi_rx_driver);
diff --git a/drivers/media/platform/dwc/dw-hdmi-rx.h b/drivers/media/platform/dwc/dw-hdmi-rx.h
new file mode 100644
index 0000000..1a3bda4
--- /dev/null
+++ b/drivers/media/platform/dwc/dw-hdmi-rx.h
@@ -0,0 +1,313 @@
+/*
+ * Synopsys Designware HDMI Receiver controller driver
+ *
+ * This Synopsys dw-hdmi-rx software and associated documentation
+ * (hereinafter the "Software") is an unsupported proprietary work of
+ * Synopsys, Inc. unless otherwise expressly agreed to in writing between
+ * Synopsys and you. The Software IS NOT an item of Licensed Software or a
+ * Licensed Product under any End User Software License Agreement or
+ * Agreement for Licensed Products with Synopsys or any supplement thereto.
+ * Synopsys is a registered trademark of Synopsys, Inc. Other names included
+ * in the SOFTWARE may be the trademarks of their respective owners.
+ *
+ * The contents of this file are dual-licensed; you may select either version 2
+ * of the GNU General Public License (âGPLâ) or the MIT license (âMITâ).
+ *
+ * Copyright (c) 2017 Synopsys, Inc. and/or its affiliates.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS"  WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING, BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE
+ * ARISING FROM, OUT OF, OR IN CONNECTION WITH THE SOFTWARE THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __DW_HDMI_RX_H__
+#define __DW_HDMI_RX_H__
+
+#include <linux/bitops.h>
+
+/* id_hdmi Registers */
+#define HDMI_SETUP_CTRL				0x0000
+#define HDMI_PLL_LCK_STS			0x0030
+#define HDMI_CKM_EVLTM				0x0094
+#define HDMI_CKM_RESULT				0x009c
+#define HDMI_STS				0x00bc
+
+/* id_mode_detection Registers */
+#define HDMI_MD_HT0				0x0148
+#define HDMI_MD_HT1				0x014c
+#define HDMI_MD_HACT_PX				0x0150
+#define HDMI_MD_VCTRL				0x0158
+#define HDMI_MD_VOL				0x0164
+#define HDMI_MD_VAL				0x0168
+#define HDMI_MD_VTL				0x0170
+#define HDMI_MD_STS				0x0180
+
+/* id_phy_configuration Registers */
+#define HDMI_PHY_CTRL				0x02c0
+#define HDMI_PHY_JTAG_CONF			0x02ec
+#define HDMI_PHY_JTAG_TAP_TCLK			0x02f0
+#define HDMI_PHY_JTAG_TAP_IN			0x02f4
+#define HDMI_PHY_JTAG_TAP_OUT			0x02f8
+#define HDMI_PHY_JTAG_ADDR			0x02fc
+
+/* id_packet_decoder Registers */
+#define HDMI_PDEC_STS				0x0360
+#define HDMI_PDEC_AVI_PB			0x03a4
+
+/* id_hdmi_2_0 Registers */
+#define HDMI_HDCP22_CONTROL			0x081c
+
+/* id_mode_detection_interrupt Registers */
+#define HDMI_MD_IEN_CLR				0x0fc0
+#define HDMI_MD_IEN_SET				0x0fc4
+#define HDMI_MD_ISTS				0x0fc8
+#define HDMI_MD_IEN				0x0fcc
+#define HDMI_MD_ICLR				0x0fd0
+#define HDMI_MD_ISET				0x0fd4
+
+/* id_hdmi_interrupt Registers */
+#define HDMI_IEN_CLR				0x0fd8
+#define HDMI_IEN_SET				0x0fdc
+#define HDMI_ISTS				0x0fe0
+#define HDMI_IEN				0x0fe4
+#define HDMI_ICLR				0x0fe8
+#define HDMI_ISET				0x0fec
+
+/* id_dmi Registers */
+#define HDMI_DMI_SW_RST				0x0ff0
+
+/* id_cbus Registers */
+#define HDMI_CBUSIOCTRL				0x3020
+
+enum {
+	/* SETUP_CTRL field values */
+	HDMI_SETUP_CTRL_HOT_PLUG_DETECT_INPUT_X_MASK = GENMASK(27,24),
+	HDMI_SETUP_CTRL_HOT_PLUG_DETECT_INPUT_X_OFFSET = 24,
+	HDMI_SETUP_CTRL_HDMIBUS_RESET_OVR_EN_MASK = BIT(21),
+	HDMI_SETUP_CTRL_HDMIBUS_RESET_OVR_EN_OFFSET = 21,
+	HDMI_SETUP_CTRL_BUS_RESET_OVR_MASK = BIT(20),
+	HDMI_SETUP_CTRL_BUS_RESET_OVR_OFFSET = 20,
+	HDMI_SETUP_CTRL_HDMI_RESET_OVR_MASK = BIT(19),
+	HDMI_SETUP_CTRL_HDMI_RESET_OVR_OFFSET = 19,
+	HDMI_SETUP_CTRL_PON_RESET_OVR_MASK = BIT(18),
+	HDMI_SETUP_CTRL_PON_RESET_OVR_OFFSET = 18,
+	HDMI_SETUP_CTRL_RESET_OVR_MASK = BIT(17),
+	HDMI_SETUP_CTRL_RESET_OVR_OFFSET = 17,
+	HDMI_SETUP_CTRL_RESET_OVR_EN_MASK = BIT(16),
+	HDMI_SETUP_CTRL_RESET_OVR_EN_OFFSET = 16,
+	HDMI_SETUP_CTRL_EQ_OSM_OVR_MASK = BIT(15),
+	HDMI_SETUP_CTRL_EQ_OSM_OVR_OFFSET = 15,
+	HDMI_SETUP_CTRL_EQ_OSM_OVR_EN_MASK = BIT(14),
+	HDMI_SETUP_CTRL_EQ_OSM_OVR_EN_OFFSET = 14,
+	HDMI_SETUP_CTRL_NOWAIT_ACTIVITY_MASK = BIT(13),
+	HDMI_SETUP_CTRL_NOWAIT_ACTIVITY_OFFSET = 13,
+	HDMI_SETUP_CTRL_EQ_CAL_TIME_MASK = GENMASK(12,7),
+	HDMI_SETUP_CTRL_EQ_CAL_TIME_OFFSET = 7,
+	HDMI_SETUP_CTRL_USE_PLL_LOCK_MASK = BIT(6),
+	HDMI_SETUP_CTRL_USE_PLL_LOCK_OFFSET = 6,
+	HDMI_SETUP_CTRL_FORCE_STATE_MASK = BIT(5),
+	HDMI_SETUP_CTRL_FORCE_STATE_OFFSET = 5,
+	HDMI_SETUP_CTRL_TARGET_STATE_MASK = GENMASK(4,1),
+	HDMI_SETUP_CTRL_TARGET_STATE_OFFSET = 1,
+	HDMI_SETUP_CTRL_HOT_PLUG_DETECT_MASK = BIT(0),
+	HDMI_SETUP_CTRL_HOT_PLUG_DETECT_OFFSET = 0,
+	/* PLL_LCK_STS field values */
+	HDMI_PLL_LCK_STS_PLL_LOCKED = BIT(0),
+	/* CKM_EVLTM field values */
+	HDMI_CKM_EVLTM_LOCK_HYST_MASK = GENMASK(21,20),
+	HDMI_CKM_EVLTM_LOCK_HYST_OFFSET = 20,
+	HDMI_CKM_EVLTM_CLK_HYST_MASK = GENMASK(18,16),
+	HDMI_CKM_EVLTM_CLK_HYST_OFFSET = 16,
+	HDMI_CKM_EVLTM_EVAL_TIME_MASK = GENMASK(15,4),
+	HDMI_CKM_EVLTM_EVAL_TIME_OFFSET = 4,
+	HDMI_CKM_EVLTM_CLK_MEAS_INPUT_SRC_MASK = BIT(0),
+	HDMI_CKM_EVLTM_CLK_MEAS_INPUT_SRC_OFFSET = 0,
+	/* CKM_RESULT field values */
+	HDMI_CKM_RESULT_CLOCK_IN_RANGE = BIT(17),
+	HDMI_CKM_RESULT_FREQ_LOCKED = BIT(16),
+	HDMI_CKM_RESULT_CLKRATE_MASK = GENMASK(15,0),
+	HDMI_CKM_RESULT_CLKRATE_OFFSET = 0,
+	/* STS field values */
+	HDMI_STS_DCM_CURRENT_MODE_MASK = GENMASK(31,28),
+	HDMI_STS_DCM_CURRENT_MODE_OFFSET = 28,
+	HDMI_STS_DCM_LAST_PIXEL_PHASE_STS_MASK = GENMASK(27,24),
+	HDMI_STS_DCM_LAST_PIXEL_PHASE_STS_OFFSET = 24,
+	HDMI_STS_DCM_PHASE_DIFF_CNT_MASK = GENMASK(23,16),
+	HDMI_STS_DCM_PH_DIFF_CNT_OVERFL = BIT(15),
+	HDMI_STS_DCM_GCP_ZERO_FIELDS_PASS = BIT(14),
+	HDMI_STS_CTL3_STS = BIT(13),
+	HDMI_STS_CTL2_STS = BIT(12),
+	HDMI_STS_CTL1_STS = BIT(11),
+	HDMI_STS_CTL0_STS = BIT(10),
+	HDMI_STS_VS_POL_ADJ_STS = BIT(9),
+	HDMI_STS_HS_POL_ADJ_STS = BIT(8),
+	HDMI_STS_RES_OVERLOAD_STS = BIT(7),
+	HDMI_STS_DCM_CURRENT_PP_MASK = GENMASK(3,0),
+	HDMI_STS_DCM_CURRENT_PP_OFFSET = 0,
+	/* MD_HT0 field values */
+	HDMI_MD_HT0_HTOT32_CLK_MASK = GENMASK(31,16),
+	HDMI_MD_HT0_HTOT32_CLK_OFFSET = 16,
+	HDMI_MD_HT0_HS_CLK_MASK = GENMASK(15,0),
+	HDMI_MD_HT0_HS_CLK_OFFSET = 0,
+	/* MD_HT1 field values */
+	HDMI_MD_HT1_HTOT_PIX_MASK = GENMASK(31,16),
+	HDMI_MD_HT1_HTOT_PIX_OFFSET = 16,
+	HDMI_MD_HT1_HOFS_PIX_MASK = GENMASK(15,0),
+	HDMI_MD_HT1_HOFS_PIX_OFFSET = 0,
+	/* MD_VCTRL field values */
+	HDMI_MD_VCTRL_V_OFFS_LIN_MODE_MASK = BIT(4),
+	HDMI_MD_VCTRL_V_OFFS_LIN_MODE_OFFSET = 4,
+	HDMI_MD_VCTRL_V_EDGE_MASK = BIT(1),
+	HDMI_MD_VCTRL_V_EDGE_OFFSET = 1,
+	HDMI_MD_VCTRL_V_MODE_MASK = BIT(0),
+	HDMI_MD_VCTRL_V_MODE_OFFSET = 0,
+	/* MD_STS field values */
+	HDMI_MD_STS_ILACE = BIT(3),
+	HDMI_MD_STS_DE_ACTIVITY = BIT(2),
+	HDMI_MD_STS_VS_ACT = BIT(1),
+	HDMI_MD_STS_HS_ACT = BIT(0),
+	/* PHY_CTRL field values */
+	HDMI_PHY_CTRL_SVSRETMODEZ_MASK = BIT(6),
+	HDMI_PHY_CTRL_SVSRETMODEZ_OFFSET = 6,
+	HDMI_PHY_CTRL_CFGCLKFREQ_MASK = GENMASK(5,4),
+	HDMI_PHY_CTRL_CFGCLKFREQ_OFFSET = 4,
+	HDMI_PHY_CTRL_PORTSELECT_MASK = GENMASK(3,2),
+	HDMI_PHY_CTRL_PORTSELECT_OFFSET = 2,
+	HDMI_PHY_CTRL_PDDQ_MASK = BIT(1),
+	HDMI_PHY_CTRL_PDDQ_OFFSET = 1,
+	HDMI_PHY_CTRL_RESET_MASK = BIT(0),
+	HDMI_PHY_CTRL_RESET_OFFSET = 0,
+	/* PHY_JTAG_TAP_IN field values */
+	HDMI_PHY_JTAG_TAP_IN_TMS = BIT(4),
+	HDMI_PHY_JTAG_TAP_IN_TDI = BIT(0),
+	/* PDEC_STS field values */
+	HDMI_PDEC_STS_DRM_CKS_CHG = BIT(31),
+	HDMI_PDEC_STS_DRM_RCV = BIT(30),
+	HDMI_PDEC_STS_NTSCVBI_CKS_CHG = BIT(29),
+	HDMI_PDEC_STS_DVIDET = BIT(28),
+	HDMI_PDEC_STS_VSI_CKS_CHG = BIT(27),
+	HDMI_PDEC_STS_GMD_CKS_CHG = BIT(26),
+	HDMI_PDEC_STS_AIF_CKS_CHG = BIT(25),
+	HDMI_PDEC_STS_AVI_CKS_CHG = BIT(24),
+	HDMI_PDEC_STS_ACR_N_CHG = BIT(23),
+	HDMI_PDEC_STS_ACR_CTS_CHG = BIT(22),
+	HDMI_PDEC_STS_GCP_AV_MUTE_CHG = BIT(21),
+	HDMI_PDEC_STS_GMD_RCV = BIT(20),
+	HDMI_PDEC_STS_AIF_RCV = BIT(19),
+	HDMI_PDEC_STS_AVI_RCV = BIT(18),
+	HDMI_PDEC_STS_ACR_RCV = BIT(17),
+	HDMI_PDEC_STS_GCP_RCV = BIT(16),
+	HDMI_PDEC_STS_VSI_RCV = BIT(15),
+	HDMI_PDEC_STS_AMP_RCV = BIT(14),
+	HDMI_PDEC_STS_NTSCVBI_RCV = BIT(13),
+	HDMI_PDEC_STS_OBA_LAYOUT = BIT(12),
+	HDMI_PDEC_STS_AUDS_LAYOUT = BIT(11),
+	HDMI_PDEC_STS_PD_FIFO_NEW_ENTRY = BIT(8),
+	HDMI_PDEC_STS_PD_FIFO_OVERFL = BIT(4),
+	HDMI_PDEC_STS_PD_FIFO_UNDERFL = BIT(3),
+	HDMI_PDEC_STS_PD_FIFO_TH_START_PASS = BIT(2),
+	HDMI_PDEC_STS_PD_FIFO_TH_MAX_PASS = BIT(1),
+	HDMI_PDEC_STS_PD_FIFO_TH_MIN_PASS = BIT(0),
+	/* PDEC_AVI_PB field values */
+	HDMI_PDEC_AVI_PB_VID_IDENT_CODE_MASK = GENMASK(31,24),
+	HDMI_PDEC_AVI_PB_VID_IDENT_CODE_OFFSET = 24,
+	HDMI_PDEC_AVI_PB_IT_CONTENT = BIT(23),
+	HDMI_PDEC_AVI_PB_EXT_COLORIMETRY_MASK = GENMASK(22,20),
+	HDMI_PDEC_AVI_PB_EXT_COLORIMETRY_OFFSET = 20,
+	HDMI_PDEC_AVI_PB_RGB_QUANT_RANGE_MASK = GENMASK(19,18),
+	HDMI_PDEC_AVI_PB_RGB_QUANT_RANGE_OFFSET = 18,
+	HDMI_PDEC_AVI_PB_NON_UNIF_SCALE_MASK = GENMASK(17,16),
+	HDMI_PDEC_AVI_PB_NON_UNIF_SCALE_OFFSET = 16,
+	HDMI_PDEC_AVI_PB_COLORIMETRY_MASK = GENMASK(15,14),
+	HDMI_PDEC_AVI_PB_COLORIMETRY_OFFSET = 14,
+	HDMI_PDEC_AVI_PB_PIC_ASPECT_RAT_MASK = GENMASK(13,12),
+	HDMI_PDEC_AVI_PB_PIC_ASPECT_RAT_OFFSET = 12,
+	HDMI_PDEC_AVI_PB_ACT_ASPECT_RAT_MASK = GENMASK(11,8),
+	HDMI_PDEC_AVI_PB_ACT_ASPECT_RAT_OFFSET = 8,
+	HDMI_PDEC_AVI_PB_VIDEO_FORMAT_MASK = GENMASK(7,5),
+	HDMI_PDEC_AVI_PB_VIDEO_FORMAT_OFFSET = 5,
+	HDMI_PDEC_AVI_PB_ACT_INFO_PRESENT = BIT(4),
+	HDMI_PDEC_AVI_PB_BAR_INFO_VALID_MASK = GENMASK(3,2),
+	HDMI_PDEC_AVI_PB_BAR_INFO_VALID_OFFSET = 2,
+	HDMI_PDEC_AVI_PB_SCAN_INFO_MASK = GENMASK(1,0),
+	HDMI_PDEC_AVI_PB_SCAN_INFO_OFFSET = 0,
+	/* HDCP22_CONTROL field values */
+	HDMI_HDCP22_CONTROL_CD_OVR_VAL_MASK = GENMASK(23,20),
+	HDMI_HDCP22_CONTROL_CD_OVR_VAL_OFFSET = 20,
+	HDMI_HDCP22_CONTROL_CD_OVR_EN_MASK = BIT(16),
+	HDMI_HDCP22_CONTROL_CD_OVR_EN_OFFSET = 16,
+	HDMI_HDCP22_CONTROL_HPD_MASK = BIT(12),
+	HDMI_HDCP22_CONTROL_HPD_OFFSET = 12,
+	HDMI_HDCP22_CONTROL_PKT_ERR_OVR_VAL_MASK = BIT(9),
+	HDMI_HDCP22_CONTROL_PKT_ERR_OVR_VAL_OFFSET= 9,
+	HDMI_HDCP22_CONTROL_PKT_ERR_OVR_EN_MASK = BIT(8),
+	HDMI_HDCP22_CONTROL_PKT_ERR_OVR_EN_OFFSET = 8,
+	HDMI_HDCP22_CONTROL_AVMUTE_OVR_VAL_MASK = BIT(5),
+	HDMI_HDCP22_CONTROL_AVMUTE_OVR_VAL_OFFSET = 5,
+	HDMI_HDCP22_CONTROL_AVMUTE_OVR_EN_MASK = BIT(4),
+	HDMI_HDCP22_CONTROL_AVMUTE_OVR_EN_OFFSET = 4,
+	HDMI_HDCP22_CONTROL_OVR_VAL_MASK = BIT(2),
+	HDMI_HDCP22_CONTROL_OVR_VAL_OFFSET = 2,
+	HDMI_HDCP22_CONTROL_OVR_EN_MASK = BIT(1),
+	HDMI_HDCP22_CONTROL_OVR_EN_OFFSET = 1,
+	HDMI_HDCP22_CONTROL_SWITCH_LCK_MASK = BIT(0),
+	HDMI_HDCP22_CONTROL_SWITCH_LCK_OFFSET = 0,
+	/* ISTS field values */
+	HDMI_ISTS_I2CMP_ARBLOST = BIT(30),
+	HDMI_ISTS_I2CMPNACK = BIT(29),
+	HDMI_ISTS_I2CMPDONE = BIT(28),
+	HDMI_ISTS_VS_THR_REACHED = BIT(27),
+	HDMI_ISTS_VSYNC_ACT_EDGE = BIT(26),
+	HDMI_ISTS_AKSV_RCV = BIT(25),
+	HDMI_ISTS_PLL_CLOCK_GATED = BIT(24),
+	HDMI_ISTS_DESER_MISAL = BIT(23),
+	HDMI_ISTS_CDSENSE_CHG = BIT(22),
+	HDMI_ISTS_CEAVID_EMPTY = BIT(21),
+	HDMI_ISTS_CEAVID_FULL = BIT(20),
+	HDMI_ISTS_SCDCTMDSCFGCHANGE = BIT(19),
+	HDMI_ISTS_SCDCSCSTATUSCHANGE = BIT(18),
+	HDMI_ISTS_SCDCCFGCHANGE = BIT(17),
+	HDMI_ISTS_DCM_CURRENT_MODE_CHG = BIT(16),
+	HDMI_ISTS_DCM_PH_DIFF_CNT_OVERFL = BIT(15),
+	HDMI_ISTS_DCM_GCP_ZERO_FIELDS_PASS = BIT(14),
+	HDMI_ISTS_CTL3_CHANGE = BIT(13),
+	HDMI_ISTS_CTL2_CHANGE = BIT(12),
+	HDMI_ISTS_CTL1_CHANGE = BIT(11),
+	HDMI_ISTS_CTL0_CHANGE = BIT(10),
+	HDMI_ISTS_VS_POL_ADJ = BIT(9),
+	HDMI_ISTS_HS_POL_ADJ = BIT(8),
+	HDMI_ISTS_RES_OVERLOAD = BIT(7),
+	HDMI_ISTS_CLK_CHANGE = BIT(6),
+	HDMI_ISTS_PLL_LCK_CHG = BIT(5),
+	HDMI_ISTS_EQGAIN_DONE = BIT(4),
+	HDMI_ISTS_OFFSCAL_DONE = BIT(3),
+	HDMI_ISTS_RESCAL_DONE = BIT(2),
+	HDMI_ISTS_ACT_CHANGE = BIT(1),
+	HDMI_ISTS_STATE_REACHED = BIT(0),
+	/* DMI_SW_RST field values */
+	HDMI_DMI_SW_RST_TMDS = BIT(16),
+	HDMI_DMI_SW_RST_HDCP = BIT(8),
+	HDMI_DMI_SW_RST_VID = BIT(7),
+	HDMI_DMI_SW_RST_PIXEL = BIT(6),
+	HDMI_DMI_SW_RST_CEC = BIT(5),
+	HDMI_DMI_SW_RST_AUD = BIT(4),
+	HDMI_DMI_SW_RST_BUS = BIT(3),
+	HDMI_DMI_SW_RST_HDMI = BIT(2),
+	HDMI_DMI_SW_RST_MODET = BIT(1),
+	HDMI_DMI_SW_RST_MAIN = BIT(0),
+	/* CBUSIOCTRL field values */
+	HDMI_CBUSIOCTRL_DATAPATH_CBUSZ_MASK = BIT(24),
+	HDMI_CBUSIOCTRL_DATAPATH_CBUSZ_OFFSET = 24,
+	HDMI_CBUSIOCTRL_SVSRETMODEZ_MASK = BIT(16),
+	HDMI_CBUSIOCTRL_SVSRETMODEZ_OFFSET = 16,
+	HDMI_CBUSIOCTRL_PDDQ_MASK = BIT(8),
+	HDMI_CBUSIOCTRL_PDDQ_OFFSET = 8,
+	HDMI_CBUSIOCTRL_RESET_MASK = BIT(0),
+	HDMI_CBUSIOCTRL_RESET_OFFSET = 0,
+};
+
+#endif /* __DW_HDMI_RX_H__ */
diff --git a/include/media/dwc/dw-hdmi-rx-pdata.h b/include/media/dwc/dw-hdmi-rx-pdata.h
new file mode 100644
index 0000000..755d680
--- /dev/null
+++ b/include/media/dwc/dw-hdmi-rx-pdata.h
@@ -0,0 +1,50 @@
+/*
+ * Synopsys Designware HDMI Receiver controller platform data
+ *
+ * This Synopsys dw-hdmi-rx software and associated documentation
+ * (hereinafter the "Software") is an unsupported proprietary work of
+ * Synopsys, Inc. unless otherwise expressly agreed to in writing between
+ * Synopsys and you. The Software IS NOT an item of Licensed Software or a
+ * Licensed Product under any End User Software License Agreement or
+ * Agreement for Licensed Products with Synopsys or any supplement thereto.
+ * Synopsys is a registered trademark of Synopsys, Inc. Other names included
+ * in the SOFTWARE may be the trademarks of their respective owners.
+ *
+ * The contents of this file are dual-licensed; you may select either version 2
+ * of the GNU General Public License (âGPLâ) or the MIT license (âMITâ).
+ *
+ * Copyright (c) 2017 Synopsys, Inc. and/or its affiliates.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS"  WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING, BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE
+ * ARISING FROM, OUT OF, OR IN CONNECTION WITH THE SOFTWARE THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __DW_HDMI_RX_PDATA_H__
+#define __DW_HDMI_RX_PDATA_H__
+
+#define DW_HDMI_RX_DRVNAME			"dw-hdmi-rx"
+
+/* Notify events */
+#define DW_HDMI_NOTIFY_IS_OFF		1
+#define DW_HDMI_NOTIFY_INPUT_CHANGED	2
+#define DW_HDMI_NOTIFY_AUDIO_CHANGED	3
+#define DW_HDMI_NOTIFY_IS_STABLE	4
+
+struct dw_hdmi_rx_pdata {
+	unsigned int iref_clk; /* MHz */
+	/* 5V sense interface */
+	bool (*dw_5v_status)(void __iomem *regs, int input);
+	void (*dw_5v_clear)(void __iomem *regs);
+	void __iomem *dw_5v_arg;
+	/* Zcal interface */
+	void (*dw_zcal_reset)(void __iomem *regs);
+	bool (*dw_zcal_done)(void __iomem *regs);
+	void __iomem *dw_zcal_arg;
+};
+
+#endif /* __DW_HDMI_RX_PDATA_H__ */
-- 
1.9.1