diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index 06c22f463328..9185d980e2bf 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -364,6 +364,17 @@ config VIDEO_IT6616
 	  To compile this driver as a module, choose M here: the
 	  module will be called IT6616.
 
+config VIDEO_LT6911C
+	tristate "Lontium LT6911UXC decoder"
+	depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API
+	select HDMI
+	select V4L2_FWNODE
+	help
+	  Support for the Lontium LT6911C series HDMI to MIPI CSI-2 bridge.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called lt6911c.
+
 config VIDEO_LT6911UXC
 	tristate "Lontium LT6911UXC decoder"
 	depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index 23975ba24d74..99a67255a5ed 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -177,6 +177,7 @@ obj-$(CONFIG_VIDEO_AW36518)	+= aw36518.o
 obj-$(CONFIG_VIDEO_LM3560)	+= lm3560.o
 obj-$(CONFIG_VIDEO_LM3646)	+= lm3646.o
 obj-$(CONFIG_VIDEO_SGM3784)	+= sgm3784.o
+obj-$(CONFIG_VIDEO_LT6911C)	+= lt6911c.o
 obj-$(CONFIG_VIDEO_LT6911UXC)	+= lt6911uxc.o
 obj-$(CONFIG_VIDEO_LT6911UXE)	+= lt6911uxe.o
 obj-$(CONFIG_VIDEO_IT6616)	+= it6616.o
diff --git a/drivers/media/i2c/lt6911c.c b/drivers/media/i2c/lt6911c.c
new file mode 100644
index 000000000000..5854a217cc9c
--- /dev/null
+++ b/drivers/media/i2c/lt6911c.c
@@ -0,0 +1,1465 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2024 Rockchip Electronics Co. Ltd.
+ *
+ * lt6911c HDMI to MIPI CSI-2 bridge driver.
+ *
+ * Author: Jianwei Fan <jianwei.fan@rock-chips.com>
+ *
+ * V0.0X01.0X00 first version.
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/hdmi.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_graph.h>
+#include <linux/rk-camera-module.h>
+#include <linux/slab.h>
+#include <linux/timer.h>
+#include <linux/v4l2-dv-timings.h>
+#include <linux/version.h>
+#include <linux/videodev2.h>
+#include <linux/workqueue.h>
+#include <linux/compat.h>
+#include <media/v4l2-controls_rockchip.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-dv-timings.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-fwnode.h>
+
+#define DRIVER_VERSION			KERNEL_VERSION(0, 0x01, 0x00)
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "debug level (0-3)");
+
+#define I2C_MAX_XFER_SIZE	128
+#define POLL_INTERVAL_MS	1000
+
+#define LT6911C_LINK_FREQ	400000000
+#define LT6911C_PIXEL_RATE	400000000
+
+#define LT6911C_CHIPID	0x0516
+#define CHIPID_REGH	0xA001
+#define CHIPID_REGL	0xA000
+#define I2C_EN_REG	0x80EE
+#define I2C_ENABLE	0x1
+#define I2C_DISABLE	0x0
+
+#define AD_HALF_PIX_CLK         0x21
+#define SOURCE_DP_RX            0x10
+#define RECEIVED_INT		1
+
+#define HTOTAL_H		0xd289
+#define HTOTAL_L		0xd28a
+#define HACT_H			0xd28b
+#define HACT_L			0xd28c
+#define HFP_H			0xd29c
+#define HFP_L			0xd29d
+#define HS_H			0xd294
+#define HS_L			0xd295
+#define HBP_H			0xd298
+#define HBP_L			0xd299
+
+#define VTOTAL_H		0xd29e
+#define VTOTAL_L		0xd29f
+#define VACT_H			0xd296
+#define VACT_L			0xd297
+#define VBP			0xd287
+#define VFP			0xd288
+#define VS			0xd286
+
+#define FM_CLK_SEL              0xa034
+#define FREQ_METER_H		0xb8b1
+#define FREQ_METER_M		0xb8b2
+#define FREQ_METER_L		0xb8b3
+#define RG_MK_PRESET_SEL        0xd283
+
+#define STREAM_CTL		0x900a
+#define ENABLE_STREAM		0xbf
+#define DISABLE_STREAM		0xbe
+
+#define LT6911C_NAME			"LT6911C"
+
+static const s64 link_freq_menu_items[] = {
+	LT6911C_LINK_FREQ,
+};
+
+struct lt6911c_state {
+	struct v4l2_fwnode_bus_mipi_csi2 bus;
+	struct v4l2_subdev sd;
+	struct media_pad pad;
+	struct v4l2_ctrl_handler hdl;
+	struct i2c_client *i2c_client;
+	struct mutex confctl_mutex;
+	struct v4l2_ctrl *detect_tx_5v_ctrl;
+	struct v4l2_ctrl *audio_sampling_rate_ctrl;
+	struct v4l2_ctrl *audio_present_ctrl;
+	struct v4l2_ctrl *link_freq;
+	struct v4l2_ctrl *pixel_rate;
+	struct delayed_work delayed_work_enable_hotplug;
+	struct delayed_work delayed_work_res_change;
+	struct v4l2_dv_timings timings;
+	struct clk *xvclk;
+	struct gpio_desc *reset_gpio;
+	struct gpio_desc *plugin_det_gpio;
+	struct gpio_desc *hpd_ctl_gpio;
+	struct gpio_desc *power_gpio;
+	struct work_struct work_i2c_poll;
+	struct timer_list timer;
+	const char *module_facing;
+	const char *module_name;
+	const char *len_name;
+	const struct lt6911c_mode *cur_mode;
+	bool nosignal;
+	bool enable_hdcp;
+	bool is_audio_present;
+	int plugin_irq;
+	u32 mbus_fmt_code;
+	u8 csi_lanes_in_use;
+	u32 module_index;
+	u32 audio_sampling_rate;
+};
+
+static const struct v4l2_dv_timings_cap lt6911c_timings_cap = {
+	.type = V4L2_DV_BT_656_1120,
+	.reserved = { 0 },
+	V4L2_INIT_BT_TIMINGS(1, 10000, 1, 10000, 0, 400000000,
+			V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
+			V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT,
+			V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_INTERLACED |
+			V4L2_DV_BT_CAP_REDUCED_BLANKING |
+			V4L2_DV_BT_CAP_CUSTOM)
+};
+
+struct lt6911c_mode {
+	u32 width;
+	u32 height;
+	struct v4l2_fract max_fps;
+	u32 hts_def;
+	u32 vts_def;
+	u32 exp_def;
+};
+
+static const struct lt6911c_mode supported_modes[] = {
+	{
+		.width = 1920,
+		.height = 1080,
+		.max_fps = {
+			.numerator = 10000,
+			.denominator = 600000,
+		},
+		.hts_def = 2200,
+		.vts_def = 1125,
+	}, {
+		.width = 1280,
+		.height = 720,
+		.max_fps = {
+			.numerator = 10000,
+			.denominator = 600000,
+		},
+		.hts_def = 1650,
+		.vts_def = 750,
+	}, {
+		.width = 720,
+		.height = 576,
+		.max_fps = {
+			.numerator = 10000,
+			.denominator = 500000,
+		},
+		.hts_def = 864,
+		.vts_def = 625,
+	}, {
+		.width = 720,
+		.height = 480,
+		.max_fps = {
+			.numerator = 10000,
+			.denominator = 600000,
+		},
+		.hts_def = 858,
+		.vts_def = 525,
+	},
+};
+
+static void lt6911c_format_change(struct v4l2_subdev *sd);
+static int lt6911c_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd);
+static int lt6911c_s_dv_timings(struct v4l2_subdev *sd,
+				struct v4l2_dv_timings *timings);
+
+static inline struct lt6911c_state *to_state(struct v4l2_subdev *sd)
+{
+	return container_of(sd, struct lt6911c_state, sd);
+}
+
+static void i2c_rd(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+	struct i2c_client *client = lt6911c->i2c_client;
+	int err;
+	u8 buf[2] = { 0xFF, reg >> 8};
+	u8 reg_addr = reg & 0xFF;
+	struct i2c_msg msgs[3];
+
+	msgs[0].addr = client->addr;
+	msgs[0].flags = 0;
+	msgs[0].len = 2;
+	msgs[0].buf = buf;
+
+	msgs[1].addr = client->addr;
+	msgs[1].flags = 0;
+	msgs[1].len = 1;
+	msgs[1].buf = &reg_addr;
+
+	msgs[2].addr = client->addr;
+	msgs[2].flags = I2C_M_RD;
+	msgs[2].len = n;
+	msgs[2].buf = values;
+
+	err = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+	if (err != ARRAY_SIZE(msgs)) {
+		v4l2_err(sd, "%s: reading register 0x%x from 0x%x failed\n",
+				__func__, reg, client->addr);
+	}
+
+	if (!debug)
+		return;
+
+	switch (n) {
+	case 1:
+		v4l2_info(sd, "I2C read 0x%04x = 0x%02x\n",
+			reg, values[0]);
+		break;
+	case 2:
+		v4l2_info(sd, "I2C read 0x%04x = 0x%02x%02x\n",
+			reg, values[1], values[0]);
+		break;
+	case 4:
+		v4l2_info(sd, "I2C read 0x%04x = 0x%02x%02x%02x%02x\n",
+			reg, values[3], values[2], values[1], values[0]);
+		break;
+	default:
+		v4l2_info(sd, "I2C read %d bytes from address 0x%04x\n",
+			n, reg);
+	}
+}
+
+static void i2c_wr(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+	struct i2c_client *client = lt6911c->i2c_client;
+	int err, i;
+	struct i2c_msg msgs[2];
+	u8 data[I2C_MAX_XFER_SIZE];
+	u8 buf[2] = { 0xFF, reg >> 8};
+
+	if ((1 + n) > I2C_MAX_XFER_SIZE) {
+		n = I2C_MAX_XFER_SIZE - 1;
+		v4l2_warn(sd, "i2c wr reg=%04x: len=%d is too big!\n",
+			  reg, 1 + n);
+	}
+
+	msgs[0].addr = client->addr;
+	msgs[0].flags = 0;
+	msgs[0].len = 2;
+	msgs[0].buf = buf;
+
+	msgs[1].addr = client->addr;
+	msgs[1].flags = 0;
+	msgs[1].len = 1 + n;
+	msgs[1].buf = data;
+
+	data[0] = reg & 0xff;
+	for (i = 0; i < n; i++)
+		data[1 + i] = values[i];
+
+	err = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+	if (err < 0) {
+		v4l2_err(sd, "%s: writing register 0x%x from 0x%x failed\n",
+				__func__, reg, client->addr);
+		return;
+	}
+
+	if (!debug)
+		return;
+
+	switch (n) {
+	case 1:
+		v4l2_info(sd, "I2C write 0x%04x = 0x%02x\n",
+				reg, data[1]);
+		break;
+	case 2:
+		v4l2_info(sd, "I2C write 0x%04x = 0x%02x%02x\n",
+				reg, data[2], data[1]);
+		break;
+	case 4:
+		v4l2_info(sd, "I2C write 0x%04x = 0x%02x%02x%02x%02x\n",
+				reg, data[4], data[3], data[2], data[1]);
+		break;
+	default:
+		v4l2_info(sd, "I2C write %d bytes from address 0x%04x\n",
+				n, reg);
+	}
+}
+
+static u8 i2c_rd8(struct v4l2_subdev *sd, u16 reg)
+{
+	u32 val;
+
+	i2c_rd(sd, reg, (u8 __force *)&val, 1);
+	return val;
+}
+
+static void i2c_wr8(struct v4l2_subdev *sd, u16 reg, u8 val)
+{
+	i2c_wr(sd, reg, &val, 1);
+}
+
+static void lt6911c_i2c_enable(struct v4l2_subdev *sd)
+{
+	i2c_wr8(sd, I2C_EN_REG, I2C_ENABLE);
+}
+
+static void lt6911c_i2c_disable(struct v4l2_subdev *sd)
+{
+	i2c_wr8(sd, I2C_EN_REG, I2C_DISABLE);
+}
+
+static inline bool tx_5v_power_present(struct v4l2_subdev *sd)
+{
+	bool ret;
+	int val, i, cnt;
+	struct lt6911c_state *lt6911c = to_state(sd);
+
+	/* if not use plugin det gpio */
+	if (!lt6911c->plugin_det_gpio)
+		return true;
+
+	cnt = 0;
+	for (i = 0; i < 5; i++) {
+		val = gpiod_get_value(lt6911c->plugin_det_gpio);
+		if (val > 0)
+			cnt++;
+		usleep_range(500, 600);
+	}
+
+	ret = (cnt >= 3) ? true : false;
+	v4l2_dbg(1, debug, sd, "%s: %d\n", __func__, ret);
+
+	return ret;
+}
+
+static inline bool no_signal(struct v4l2_subdev *sd)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+
+	v4l2_dbg(1, debug, sd, "%s no signal:%d\n", __func__,
+			lt6911c->nosignal);
+
+	return lt6911c->nosignal;
+}
+
+static inline bool audio_present(struct v4l2_subdev *sd)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+
+	return lt6911c->is_audio_present;
+}
+
+static int get_audio_sampling_rate(struct v4l2_subdev *sd)
+{
+	static const int code_to_rate[] = {
+		44100, 0, 48000, 32000, 22050, 384000, 24000, 352800,
+		88200, 768000, 96000, 705600, 176400, 0, 192000, 0
+	};
+
+	if (no_signal(sd))
+		return 0;
+
+	return code_to_rate[2];
+}
+
+static inline unsigned int fps_calc(const struct v4l2_bt_timings *t)
+{
+	if (!V4L2_DV_BT_FRAME_HEIGHT(t) || !V4L2_DV_BT_FRAME_WIDTH(t))
+		return 0;
+
+	return DIV_ROUND_CLOSEST((unsigned int)t->pixelclock,
+			V4L2_DV_BT_FRAME_HEIGHT(t) * V4L2_DV_BT_FRAME_WIDTH(t));
+}
+
+static bool lt6911c_rcv_supported_res(struct v4l2_subdev *sd, u32 width,
+		u32 height)
+{
+	u32 i;
+
+	for (i = 0; i < ARRAY_SIZE(supported_modes); i++) {
+		if ((supported_modes[i].width == width) &&
+		    (supported_modes[i].height == height)) {
+			break;
+		}
+	}
+
+	if (i == ARRAY_SIZE(supported_modes)) {
+		v4l2_err(sd, "%s do not support res wxh: %dx%d\n", __func__,
+				width, height);
+		return false;
+	} else {
+		return true;
+	}
+}
+
+static int lt6911c_get_detected_timings(struct v4l2_subdev *sd,
+				     struct v4l2_dv_timings *timings)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+	struct v4l2_bt_timings *bt = &timings->bt;
+	u32 hact, vact, htotal, vtotal;
+	u32 hbp, hs, hfp, vbp, vs, vfp;
+	u32 pixel_clock, fps, halt_pix_clk;
+	u8 clk_h, clk_m, clk_l;
+	u8 value, val_h, val_l;
+
+	memset(timings, 0, sizeof(struct v4l2_dv_timings));
+
+	lt6911c_i2c_enable(sd);
+	i2c_wr8(sd, FM_CLK_SEL, AD_HALF_PIX_CLK);
+	mdelay(10);
+	clk_h = i2c_rd8(sd, FREQ_METER_H);
+	clk_m = i2c_rd8(sd, FREQ_METER_M);
+	clk_l = i2c_rd8(sd, FREQ_METER_L);
+	halt_pix_clk = (((clk_h & 0xf) << 16) | (clk_m << 8) | clk_l);
+	pixel_clock = halt_pix_clk * 2 * 1000;
+
+	i2c_wr8(sd, RG_MK_PRESET_SEL, SOURCE_DP_RX);
+	mdelay(10);
+	val_h = i2c_rd8(sd, HTOTAL_H);
+	val_l = i2c_rd8(sd, HTOTAL_L);
+	htotal = ((val_h << 8) | val_l) * 2;
+	val_h = i2c_rd8(sd, VTOTAL_H);
+	val_l = i2c_rd8(sd, VTOTAL_L);
+	vtotal = (val_h << 8) | val_l;
+	val_h = i2c_rd8(sd, HACT_H);
+	val_l = i2c_rd8(sd, HACT_L);
+	hact = ((val_h << 8) | val_l) * 2;
+	val_h = i2c_rd8(sd, VACT_H);
+	val_l = i2c_rd8(sd, VACT_L);
+	vact = (val_h << 8) | val_l;
+	val_h = i2c_rd8(sd, HS_H);
+	val_l = i2c_rd8(sd, HS_L);
+	hs = ((val_h << 8) | val_l) * 2;
+	value = i2c_rd8(sd, VS);
+	vs = value;
+	val_h = i2c_rd8(sd, HFP_H);
+	val_l = i2c_rd8(sd, HFP_L);
+	hfp = ((val_h << 8) | val_l) * 2;
+	value = i2c_rd8(sd, VFP);
+	vfp = value;
+	val_h = i2c_rd8(sd, HBP_H);
+	val_l = i2c_rd8(sd, HBP_L);
+	hbp = ((val_h << 8) | val_l) * 2;
+	value = i2c_rd8(sd, VBP);
+	vbp = value;
+
+	lt6911c_i2c_disable(sd);
+
+	if (!lt6911c_rcv_supported_res(sd, hact, vact)) {
+		lt6911c->nosignal = true;
+		v4l2_err(sd, "%s: rcv err res, return no signal!\n", __func__);
+		return -EINVAL;
+	}
+
+	lt6911c->nosignal = false;
+	lt6911c->is_audio_present = true;
+	timings->type = V4L2_DV_BT_656_1120;
+	bt->interlaced = V4L2_DV_PROGRESSIVE;
+	bt->width = hact;
+	bt->height = vact;
+	bt->vsync = vs;
+	bt->hsync = hs;
+	bt->pixelclock = pixel_clock;
+	bt->hfrontporch = hfp;
+	bt->vfrontporch = vfp;
+	bt->hbackporch = hbp;
+	bt->vbackporch = vbp;
+	fps = fps_calc(bt);
+
+	v4l2_info(sd, "act:%dx%d, total:%dx%d, pixclk:%d, fps:%d\n",
+			hact, vact, htotal, vtotal, pixel_clock, fps);
+	v4l2_info(sd, "hfp:%d, hs:%d, hbp:%d, vfp:%d, vs:%d, vbp:%d\n",
+			bt->hfrontporch, bt->hsync, bt->hbackporch,
+			bt->vfrontporch, bt->vsync, bt->vbackporch);
+	v4l2_info(sd, "inerlaced:%d,\n", bt->interlaced);
+
+	return 0;
+}
+
+static void lt6911c_config_hpd(struct v4l2_subdev *sd)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+	bool plugin;
+
+	plugin = tx_5v_power_present(sd);
+	v4l2_dbg(2, debug, sd, "%s: plugin: %d\n", __func__, plugin);
+
+	if (plugin) {
+		gpiod_set_value(lt6911c->hpd_ctl_gpio, 1);
+	} else {
+		lt6911c->nosignal = true;
+		gpiod_set_value(lt6911c->hpd_ctl_gpio, 0);
+	}
+}
+
+static void lt6911c_delayed_work_enable_hotplug(struct work_struct *work)
+{
+	struct delayed_work *dwork = to_delayed_work(work);
+	struct lt6911c_state *lt6911c = container_of(dwork,
+			struct lt6911c_state, delayed_work_enable_hotplug);
+	struct v4l2_subdev *sd = &lt6911c->sd;
+
+	lt6911c_config_hpd(sd);
+}
+
+static void lt6911c_delayed_work_res_change(struct work_struct *work)
+{
+	struct delayed_work *dwork = to_delayed_work(work);
+	struct lt6911c_state *lt6911c = container_of(dwork,
+			struct lt6911c_state, delayed_work_res_change);
+	struct v4l2_subdev *sd = &lt6911c->sd;
+
+	lt6911c_format_change(sd);
+}
+
+static int lt6911c_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+
+	return v4l2_ctrl_s_ctrl(lt6911c->detect_tx_5v_ctrl,
+			tx_5v_power_present(sd));
+}
+
+static int lt6911c_s_ctrl_audio_sampling_rate(struct v4l2_subdev *sd)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+
+	return v4l2_ctrl_s_ctrl(lt6911c->audio_sampling_rate_ctrl,
+			get_audio_sampling_rate(sd));
+}
+
+static int lt6911c_s_ctrl_audio_present(struct v4l2_subdev *sd)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+
+	return v4l2_ctrl_s_ctrl(lt6911c->audio_present_ctrl,
+			audio_present(sd));
+}
+
+static int lt6911c_update_controls(struct v4l2_subdev *sd)
+{
+	int ret = 0;
+
+	ret |= lt6911c_s_ctrl_detect_tx_5v(sd);
+	ret |= lt6911c_s_ctrl_audio_sampling_rate(sd);
+	ret |= lt6911c_s_ctrl_audio_present(sd);
+
+	return ret;
+}
+
+static inline void enable_stream(struct v4l2_subdev *sd, bool enable)
+{
+	v4l2_dbg(2, debug, sd, "%s: %sable\n",
+			__func__, enable ? "en" : "dis");
+}
+
+static void lt6911c_format_change(struct v4l2_subdev *sd)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+	struct v4l2_dv_timings timings;
+	const struct v4l2_event lt6911c_ev_fmt = {
+		.type = V4L2_EVENT_SOURCE_CHANGE,
+		.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
+	};
+
+	if (lt6911c_get_detected_timings(sd, &timings)) {
+		enable_stream(sd, false);
+
+		v4l2_dbg(1, debug, sd, "%s: No signal\n", __func__);
+	} else {
+		if (!v4l2_match_dv_timings(&lt6911c->timings, &timings, 0, false)) {
+			enable_stream(sd, false);
+			/* automatically set timing rather than set by user */
+			lt6911c_s_dv_timings(sd, &timings);
+			v4l2_print_dv_timings(sd->name,
+					"Format_change: New format: ",
+					&timings, false);
+		}
+	}
+
+	if (sd->devnode)
+		v4l2_subdev_notify_event(sd, &lt6911c_ev_fmt);
+}
+
+static int lt6911c_get_ctrl(struct v4l2_ctrl *ctrl)
+{
+	int ret = -1;
+	struct lt6911c_state *lt6911c = container_of(ctrl->handler,
+			struct lt6911c_state, hdl);
+	struct v4l2_subdev *sd = &(lt6911c->sd);
+
+	if (ctrl->id == V4L2_CID_DV_RX_POWER_PRESENT) {
+		ret = tx_5v_power_present(sd);
+		*ctrl->p_new.p_s32 = ret;
+	}
+
+	return ret;
+}
+
+static int lt6911c_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+
+	schedule_delayed_work(&lt6911c->delayed_work_res_change, HZ / 20);
+	*handled = true;
+
+	return 0;
+}
+
+static irqreturn_t lt6911c_res_change_irq_handler(int irq, void *dev_id)
+{
+	struct lt6911c_state *lt6911c = dev_id;
+	bool handled;
+
+	lt6911c_isr(&lt6911c->sd, 0, &handled);
+
+	return handled ? IRQ_HANDLED : IRQ_NONE;
+}
+
+static irqreturn_t plugin_detect_irq_handler(int irq, void *dev_id)
+{
+	struct lt6911c_state *lt6911c = dev_id;
+	struct v4l2_subdev *sd = &lt6911c->sd;
+
+	/* control hpd output level after 25ms */
+	schedule_delayed_work(&lt6911c->delayed_work_enable_hotplug,
+			HZ / 40);
+	tx_5v_power_present(sd);
+
+	return IRQ_HANDLED;
+}
+
+static void lt6911c_irq_poll_timer(struct timer_list *t)
+{
+	struct lt6911c_state *lt6911c = from_timer(lt6911c, t, timer);
+
+	schedule_work(&lt6911c->work_i2c_poll);
+	mod_timer(&lt6911c->timer, jiffies + msecs_to_jiffies(POLL_INTERVAL_MS));
+}
+
+static void lt6911c_work_i2c_poll(struct work_struct *work)
+{
+	struct lt6911c_state *lt6911c = container_of(work,
+			struct lt6911c_state, work_i2c_poll);
+	struct v4l2_subdev *sd = &lt6911c->sd;
+
+	lt6911c_format_change(sd);
+}
+
+static int lt6911c_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);
+	case V4L2_EVENT_CTRL:
+		return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int lt6911c_g_input_status(struct v4l2_subdev *sd, u32 *status)
+{
+	*status = 0;
+	*status |= no_signal(sd) ? V4L2_IN_ST_NO_SIGNAL : 0;
+
+	v4l2_dbg(1, debug, sd, "%s: status = 0x%x\n", __func__, *status);
+
+	return 0;
+}
+
+static int lt6911c_s_dv_timings(struct v4l2_subdev *sd,
+				 struct v4l2_dv_timings *timings)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+
+	if (!timings)
+		return -EINVAL;
+
+	if (debug)
+		v4l2_print_dv_timings(sd->name, "s_dv_timings: ",
+				timings, false);
+
+	if (v4l2_match_dv_timings(&lt6911c->timings, timings, 0, false)) {
+		v4l2_dbg(1, debug, sd, "%s: no change\n", __func__);
+		return 0;
+	}
+
+	if (!v4l2_valid_dv_timings(timings,
+				&lt6911c_timings_cap, NULL, NULL)) {
+		v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__);
+		return -ERANGE;
+	}
+
+	lt6911c->timings = *timings;
+
+	enable_stream(sd, false);
+
+	return 0;
+}
+
+static int lt6911c_g_dv_timings(struct v4l2_subdev *sd,
+				struct v4l2_dv_timings *timings)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+
+	*timings = lt6911c->timings;
+
+	return 0;
+}
+
+static int lt6911c_enum_dv_timings(struct v4l2_subdev *sd,
+				struct v4l2_enum_dv_timings *timings)
+{
+	if (timings->pad != 0)
+		return -EINVAL;
+
+	return v4l2_enum_dv_timings_cap(timings,
+			&lt6911c_timings_cap, NULL, NULL);
+}
+
+static int lt6911c_query_dv_timings(struct v4l2_subdev *sd,
+				struct v4l2_dv_timings *timings)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+
+	*timings = lt6911c->timings;
+	if (debug)
+		v4l2_print_dv_timings(sd->name,
+				"query_dv_timings: ", timings, false);
+
+	if (!v4l2_valid_dv_timings(timings, &lt6911c_timings_cap, NULL,
+				NULL)) {
+		v4l2_dbg(1, debug, sd, "%s: timings out of range\n",
+				__func__);
+
+		return -ERANGE;
+	}
+
+	return 0;
+}
+
+static int lt6911c_dv_timings_cap(struct v4l2_subdev *sd,
+				struct v4l2_dv_timings_cap *cap)
+{
+	if (cap->pad != 0)
+		return -EINVAL;
+
+	*cap = lt6911c_timings_cap;
+
+	return 0;
+}
+
+static int lt6911c_g_mbus_config(struct v4l2_subdev *sd,
+			unsigned int pad, struct v4l2_mbus_config *cfg)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+
+	cfg->type = V4L2_MBUS_CSI2_DPHY;
+	cfg->flags = V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK |
+			V4L2_MBUS_CSI2_CHANNEL_0;
+
+	switch (lt6911c->csi_lanes_in_use) {
+	case 1:
+		cfg->flags |= V4L2_MBUS_CSI2_1_LANE;
+		break;
+	case 2:
+		cfg->flags |= V4L2_MBUS_CSI2_2_LANE;
+		break;
+	case 3:
+		cfg->flags |= V4L2_MBUS_CSI2_3_LANE;
+		break;
+	case 4:
+		cfg->flags |= V4L2_MBUS_CSI2_4_LANE;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int lt6911c_s_stream(struct v4l2_subdev *sd, int enable)
+{
+	enable_stream(sd, enable);
+
+	return 0;
+}
+
+static int lt6911c_enum_mbus_code(struct v4l2_subdev *sd,
+			struct v4l2_subdev_pad_config *cfg,
+			struct v4l2_subdev_mbus_code_enum *code)
+{
+	switch (code->index) {
+	case 0:
+		code->code = MEDIA_BUS_FMT_UYVY8_2X8;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int lt6911c_enum_frame_sizes(struct v4l2_subdev *sd,
+				   struct v4l2_subdev_pad_config *cfg,
+				   struct v4l2_subdev_frame_size_enum *fse)
+{
+	if (fse->index >= ARRAY_SIZE(supported_modes))
+		return -EINVAL;
+
+	if (fse->code != MEDIA_BUS_FMT_UYVY8_2X8)
+		return -EINVAL;
+
+	fse->min_width  = supported_modes[fse->index].width;
+	fse->max_width  = supported_modes[fse->index].width;
+	fse->max_height = supported_modes[fse->index].height;
+	fse->min_height = supported_modes[fse->index].height;
+
+	return 0;
+}
+
+static int lt6911c_get_fmt(struct v4l2_subdev *sd,
+			struct v4l2_subdev_pad_config *cfg,
+			struct v4l2_subdev_format *format)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+
+	mutex_lock(&lt6911c->confctl_mutex);
+	format->format.code = lt6911c->mbus_fmt_code;
+	format->format.width = lt6911c->timings.bt.width;
+	format->format.height = lt6911c->timings.bt.height;
+	format->format.field =
+		lt6911c->timings.bt.interlaced ?
+		V4L2_FIELD_INTERLACED : V4L2_FIELD_NONE;
+	format->format.colorspace = V4L2_COLORSPACE_SRGB;
+	mutex_unlock(&lt6911c->confctl_mutex);
+
+	v4l2_dbg(1, debug, sd, "%s: fmt code:%d, w:%d, h:%d, field code:%d\n",
+			__func__, format->format.code, format->format.width,
+			format->format.height, format->format.field);
+
+	return 0;
+}
+
+static int lt6911c_enum_frame_interval(struct v4l2_subdev *sd,
+				struct v4l2_subdev_pad_config *cfg,
+				struct v4l2_subdev_frame_interval_enum *fie)
+{
+	if (fie->index >= ARRAY_SIZE(supported_modes))
+		return -EINVAL;
+
+	if (fie->code != MEDIA_BUS_FMT_UYVY8_2X8)
+		return -EINVAL;
+
+	fie->width = supported_modes[fie->index].width;
+	fie->height = supported_modes[fie->index].height;
+	fie->interval = supported_modes[fie->index].max_fps;
+
+	return 0;
+}
+
+static int lt6911c_get_reso_dist(const struct lt6911c_mode *mode,
+				struct v4l2_mbus_framefmt *framefmt)
+{
+	return abs(mode->width - framefmt->width) +
+		abs(mode->height - framefmt->height);
+}
+
+static const struct lt6911c_mode *
+lt6911c_find_best_fit(struct v4l2_subdev_format *fmt)
+{
+	struct v4l2_mbus_framefmt *framefmt = &fmt->format;
+	int dist;
+	int cur_best_fit = 0;
+	int cur_best_fit_dist = -1;
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(supported_modes); i++) {
+		dist = lt6911c_get_reso_dist(&supported_modes[i], framefmt);
+		if (cur_best_fit_dist == -1 || dist < cur_best_fit_dist) {
+			cur_best_fit_dist = dist;
+			cur_best_fit = i;
+		}
+	}
+
+	return &supported_modes[cur_best_fit];
+}
+
+static int lt6911c_set_fmt(struct v4l2_subdev *sd,
+			struct v4l2_subdev_pad_config *cfg,
+			struct v4l2_subdev_format *format)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+	const struct lt6911c_mode *mode;
+
+	/* is overwritten by get_fmt */
+	u32 code = format->format.code;
+	int ret = lt6911c_get_fmt(sd, cfg, format);
+
+	format->format.code = code;
+
+	if (ret)
+		return ret;
+
+	switch (code) {
+	case MEDIA_BUS_FMT_UYVY8_2X8:
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	if (format->which == V4L2_SUBDEV_FORMAT_TRY)
+		return 0;
+
+	lt6911c->mbus_fmt_code = format->format.code;
+	mode = lt6911c_find_best_fit(format);
+	lt6911c->cur_mode = mode;
+	enable_stream(sd, false);
+
+	return 0;
+}
+
+static int lt6911c_g_frame_interval(struct v4l2_subdev *sd,
+			struct v4l2_subdev_frame_interval *fi)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+	const struct lt6911c_mode *mode = lt6911c->cur_mode;
+
+	mutex_lock(&lt6911c->confctl_mutex);
+	fi->interval = mode->max_fps;
+	mutex_unlock(&lt6911c->confctl_mutex);
+
+	return 0;
+}
+
+static void lt6911c_get_module_inf(struct lt6911c_state *lt6911c,
+				  struct rkmodule_inf *inf)
+{
+	memset(inf, 0, sizeof(*inf));
+	strscpy(inf->base.sensor, LT6911C_NAME, sizeof(inf->base.sensor));
+	strscpy(inf->base.module, lt6911c->module_name, sizeof(inf->base.module));
+	strscpy(inf->base.lens, lt6911c->len_name, sizeof(inf->base.lens));
+}
+
+static long lt6911c_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
+{
+	struct lt6911c_state *lt6911c = to_state(sd);
+	long ret = 0;
+
+	switch (cmd) {
+	case RKMODULE_GET_MODULE_INFO:
+		lt6911c_get_module_inf(lt6911c, (struct rkmodule_inf *)arg);
+		break;
+	default:
+		ret = -ENOIOCTLCMD;
+		break;
+	}
+
+	return ret;
+}
+
+#ifdef CONFIG_COMPAT
+static long lt6911c_compat_ioctl32(struct v4l2_subdev *sd,
+				  unsigned int cmd, unsigned long arg)
+{
+	void __user *up = compat_ptr(arg);
+	struct rkmodule_inf *inf;
+	long ret;
+
+	switch (cmd) {
+	case RKMODULE_GET_MODULE_INFO:
+		inf = kzalloc(sizeof(*inf), GFP_KERNEL);
+		if (!inf) {
+			ret = -ENOMEM;
+			return ret;
+		}
+
+		ret = lt6911c_ioctl(sd, cmd, inf);
+		if (!ret) {
+			ret = copy_to_user(up, inf, sizeof(*inf));
+			if (ret)
+				ret = -EFAULT;
+		}
+		kfree(inf);
+		break;
+
+	default:
+		ret = -ENOIOCTLCMD;
+		break;
+	}
+
+	return ret;
+}
+#endif
+
+static const struct v4l2_ctrl_ops lt6911c_ctrl_ops = {
+	.g_volatile_ctrl = lt6911c_get_ctrl,
+};
+
+static const struct v4l2_subdev_core_ops lt6911c_core_ops = {
+	.interrupt_service_routine = lt6911c_isr,
+	.subscribe_event = lt6911c_subscribe_event,
+	.unsubscribe_event = v4l2_event_subdev_unsubscribe,
+	.ioctl = lt6911c_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl32 = lt6911c_compat_ioctl32,
+#endif
+};
+
+static const struct v4l2_subdev_video_ops lt6911c_video_ops = {
+	.g_input_status = lt6911c_g_input_status,
+	.s_dv_timings = lt6911c_s_dv_timings,
+	.g_dv_timings = lt6911c_g_dv_timings,
+	.query_dv_timings = lt6911c_query_dv_timings,
+	.s_stream = lt6911c_s_stream,
+	.g_frame_interval = lt6911c_g_frame_interval,
+};
+
+static const struct v4l2_subdev_pad_ops lt6911c_pad_ops = {
+	.enum_mbus_code = lt6911c_enum_mbus_code,
+	.enum_frame_size = lt6911c_enum_frame_sizes,
+	.enum_frame_interval = lt6911c_enum_frame_interval,
+	.set_fmt = lt6911c_set_fmt,
+	.get_fmt = lt6911c_get_fmt,
+	.enum_dv_timings = lt6911c_enum_dv_timings,
+	.dv_timings_cap = lt6911c_dv_timings_cap,
+	.get_mbus_config = lt6911c_g_mbus_config,
+};
+
+static const struct v4l2_subdev_ops lt6911c_ops = {
+	.core = &lt6911c_core_ops,
+	.video = &lt6911c_video_ops,
+	.pad = &lt6911c_pad_ops,
+};
+
+static const struct v4l2_ctrl_config lt6911c_ctrl_audio_sampling_rate = {
+	.id = RK_V4L2_CID_AUDIO_SAMPLING_RATE,
+	.name = "Audio sampling rate",
+	.type = V4L2_CTRL_TYPE_INTEGER,
+	.min = 0,
+	.max = 768000,
+	.step = 1,
+	.def = 0,
+	.flags = V4L2_CTRL_FLAG_READ_ONLY,
+};
+
+static const struct v4l2_ctrl_config lt6911c_ctrl_audio_present = {
+	.id = RK_V4L2_CID_AUDIO_PRESENT,
+	.name = "Audio present",
+	.type = V4L2_CTRL_TYPE_BOOLEAN,
+	.min = 0,
+	.max = 1,
+	.step = 1,
+	.def = 0,
+	.flags = V4L2_CTRL_FLAG_READ_ONLY,
+};
+
+static void lt6911c_reset(struct lt6911c_state *lt6911c)
+{
+	gpiod_set_value(lt6911c->reset_gpio, 0);
+	usleep_range(2000, 2100);
+	gpiod_set_value(lt6911c->reset_gpio, 1);
+	usleep_range(120*1000, 121*1000);
+	gpiod_set_value(lt6911c->reset_gpio, 0);
+	usleep_range(300*1000, 310*1000);
+}
+
+static int lt6911c_init_v4l2_ctrls(struct lt6911c_state *lt6911c)
+{
+	struct v4l2_subdev *sd;
+	int ret;
+
+	sd = &lt6911c->sd;
+	ret = v4l2_ctrl_handler_init(&lt6911c->hdl, 5);
+	if (ret)
+		return ret;
+
+	lt6911c->link_freq = v4l2_ctrl_new_int_menu(&lt6911c->hdl, NULL,
+			V4L2_CID_LINK_FREQ,
+			ARRAY_SIZE(link_freq_menu_items) - 1, 0,
+			link_freq_menu_items);
+	lt6911c->pixel_rate = v4l2_ctrl_new_std(&lt6911c->hdl, NULL,
+			V4L2_CID_PIXEL_RATE,
+			0, LT6911C_PIXEL_RATE, 1, LT6911C_PIXEL_RATE);
+
+	lt6911c->detect_tx_5v_ctrl = v4l2_ctrl_new_std(&lt6911c->hdl,
+			&lt6911c_ctrl_ops, V4L2_CID_DV_RX_POWER_PRESENT,
+			0, 1, 0, 0);
+	if (lt6911c->detect_tx_5v_ctrl)
+		lt6911c->detect_tx_5v_ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
+
+	lt6911c->audio_sampling_rate_ctrl =
+		v4l2_ctrl_new_custom(&lt6911c->hdl,
+				&lt6911c_ctrl_audio_sampling_rate, NULL);
+	lt6911c->audio_present_ctrl = v4l2_ctrl_new_custom(&lt6911c->hdl,
+			&lt6911c_ctrl_audio_present, NULL);
+
+	sd->ctrl_handler = &lt6911c->hdl;
+	if (lt6911c->hdl.error) {
+		ret = lt6911c->hdl.error;
+		v4l2_err(sd, "cfg v4l2 ctrls failed! ret:%d\n", ret);
+		return ret;
+	}
+
+	__v4l2_ctrl_s_ctrl(lt6911c->link_freq, link_freq_menu_items[0]);
+	__v4l2_ctrl_s_ctrl_int64(lt6911c->pixel_rate, LT6911C_PIXEL_RATE);
+
+	if (lt6911c_update_controls(sd)) {
+		ret = -ENODEV;
+		v4l2_err(sd, "update v4l2 ctrls failed! ret:%d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_OF
+static int lt6911c_probe_of(struct lt6911c_state *lt6911c)
+{
+	struct device *dev = &lt6911c->i2c_client->dev;
+	struct device_node *node = dev->of_node;
+	struct v4l2_fwnode_endpoint endpoint = { .bus_type = 0 };
+	struct device_node *ep;
+	int ret;
+
+	ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX,
+			&lt6911c->module_index);
+	ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING,
+			&lt6911c->module_facing);
+	ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME,
+			&lt6911c->module_name);
+	ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME,
+			&lt6911c->len_name);
+	if (ret) {
+		dev_err(dev, "could not get module information!\n");
+		return -EINVAL;
+	}
+
+	lt6911c->power_gpio = devm_gpiod_get_optional(dev, "power",
+			GPIOD_OUT_LOW);
+	if (IS_ERR(lt6911c->power_gpio)) {
+		dev_err(dev, "failed to get power gpio\n");
+		ret = PTR_ERR(lt6911c->power_gpio);
+		return ret;
+	}
+
+	lt6911c->reset_gpio = devm_gpiod_get_optional(dev, "reset",
+			GPIOD_OUT_HIGH);
+	if (IS_ERR(lt6911c->reset_gpio)) {
+		dev_err(dev, "failed to get reset gpio\n");
+		ret = PTR_ERR(lt6911c->reset_gpio);
+		return ret;
+	}
+
+	lt6911c->plugin_det_gpio = devm_gpiod_get_optional(dev, "plugin-det",
+			GPIOD_IN);
+	if (IS_ERR(lt6911c->plugin_det_gpio)) {
+		dev_err(dev, "failed to get plugin det gpio\n");
+		ret = PTR_ERR(lt6911c->plugin_det_gpio);
+		return ret;
+	}
+
+	lt6911c->hpd_ctl_gpio = devm_gpiod_get_optional(dev, "hpd-ctl",
+			GPIOD_OUT_HIGH);
+	if (IS_ERR(lt6911c->hpd_ctl_gpio)) {
+		dev_err(dev, "failed to get hpd ctl gpio\n");
+		ret = PTR_ERR(lt6911c->hpd_ctl_gpio);
+		return ret;
+	}
+
+	ep = of_graph_get_next_endpoint(dev->of_node, NULL);
+	if (!ep) {
+		dev_err(dev, "missing endpoint node\n");
+		return -EINVAL;
+	}
+
+	ret = v4l2_fwnode_endpoint_alloc_parse(of_fwnode_handle(ep), &endpoint);
+	if (ret) {
+		dev_err(dev, "failed to parse endpoint\n");
+		goto put_node;
+	}
+
+	if (endpoint.bus_type != V4L2_MBUS_CSI2_DPHY ||
+			endpoint.bus.mipi_csi2.num_data_lanes == 0) {
+		dev_err(dev, "missing CSI-2 properties in endpoint\n");
+		ret = -EINVAL;
+		goto free_endpoint;
+	}
+
+	lt6911c->xvclk = devm_clk_get(dev, "xvclk");
+	if (IS_ERR(lt6911c->xvclk)) {
+		dev_err(dev, "failed to get xvclk\n");
+		ret = -EINVAL;
+		goto free_endpoint;
+	}
+
+	ret = clk_prepare_enable(lt6911c->xvclk);
+	if (ret) {
+		dev_err(dev, "Failed! to enable xvclk\n");
+		goto free_endpoint;
+	}
+
+	lt6911c->csi_lanes_in_use = endpoint.bus.mipi_csi2.num_data_lanes;
+	lt6911c->bus = endpoint.bus.mipi_csi2;
+	lt6911c->enable_hdcp = false;
+
+	gpiod_set_value(lt6911c->hpd_ctl_gpio, 0);
+	gpiod_set_value(lt6911c->power_gpio, 1);
+	lt6911c_reset(lt6911c);
+
+	ret = 0;
+
+free_endpoint:
+	v4l2_fwnode_endpoint_free(&endpoint);
+put_node:
+	of_node_put(ep);
+	return ret;
+}
+#else
+static inline int lt6911c_probe_of(struct lt6911c_state *state)
+{
+	return -ENODEV;
+}
+#endif
+static int lt6911c_check_chip_id(struct lt6911c_state *lt6911c)
+{
+	struct device *dev = &lt6911c->i2c_client->dev;
+	struct v4l2_subdev *sd = &lt6911c->sd;
+	u8 id_h, id_l;
+	u32 chipid;
+	int ret = 0;
+
+	lt6911c_i2c_enable(sd);
+	id_l  = i2c_rd8(sd, CHIPID_REGL);
+	id_h  = i2c_rd8(sd, CHIPID_REGH);
+	lt6911c_i2c_disable(sd);
+
+	chipid = (id_h << 8) | id_l;
+	if (chipid != LT6911C_CHIPID) {
+		dev_err(dev, "chipid err, read:%#x, expect:%#x\n",
+				chipid, LT6911C_CHIPID);
+		return -EINVAL;
+	}
+	dev_info(dev, "check chipid ok, id:%#x", chipid);
+
+	return ret;
+}
+
+static int lt6911c_probe(struct i2c_client *client,
+			  const struct i2c_device_id *id)
+{
+	struct lt6911c_state *lt6911c;
+	struct v4l2_subdev *sd;
+	struct device *dev = &client->dev;
+	char facing[2];
+	int err;
+
+	dev_info(dev, "driver version: %02x.%02x.%02x",
+		DRIVER_VERSION >> 16,
+		(DRIVER_VERSION & 0xff00) >> 8,
+		DRIVER_VERSION & 0x00ff);
+
+	lt6911c = devm_kzalloc(dev, sizeof(struct lt6911c_state), GFP_KERNEL);
+	if (!lt6911c)
+		return -ENOMEM;
+
+	sd = &lt6911c->sd;
+	lt6911c->i2c_client = client;
+	lt6911c->cur_mode = &supported_modes[0];
+	lt6911c->mbus_fmt_code = MEDIA_BUS_FMT_UYVY8_2X8;
+
+	err = lt6911c_probe_of(lt6911c);
+	if (err) {
+		v4l2_err(sd, "lt6911c_parse_of failed! err:%d\n", err);
+		return err;
+	}
+
+	err = lt6911c_check_chip_id(lt6911c);
+	if (err < 0)
+		return err;
+
+	lt6911c_reset(lt6911c);
+
+	mutex_init(&lt6911c->confctl_mutex);
+	err = lt6911c_init_v4l2_ctrls(lt6911c);
+	if (err)
+		goto err_free_hdl;
+
+	client->flags |= I2C_CLIENT_SCCB;
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+	v4l2_i2c_subdev_init(sd, client, &lt6911c_ops);
+	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
+#endif
+
+#if defined(CONFIG_MEDIA_CONTROLLER)
+	lt6911c->pad.flags = MEDIA_PAD_FL_SOURCE;
+	sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
+	err = media_entity_pads_init(&sd->entity, 1, &lt6911c->pad);
+	if (err < 0) {
+		v4l2_err(sd, "media entity init failed! err:%d\n", err);
+		goto err_free_hdl;
+	}
+#endif
+	memset(facing, 0, sizeof(facing));
+	if (strcmp(lt6911c->module_facing, "back") == 0)
+		facing[0] = 'b';
+	else
+		facing[0] = 'f';
+
+	snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s",
+		 lt6911c->module_index, facing,
+		 LT6911C_NAME, dev_name(sd->dev));
+	err = v4l2_async_register_subdev_sensor_common(sd);
+	if (err < 0) {
+		v4l2_err(sd, "v4l2 register subdev failed! err:%d\n", err);
+		goto err_clean_entity;
+	}
+
+	INIT_DELAYED_WORK(&lt6911c->delayed_work_enable_hotplug,
+			lt6911c_delayed_work_enable_hotplug);
+	INIT_DELAYED_WORK(&lt6911c->delayed_work_res_change,
+			lt6911c_delayed_work_res_change);
+
+	if (lt6911c->i2c_client->irq) {
+		v4l2_dbg(1, debug, sd, "cfg lt6911c irq!\n");
+		err = devm_request_threaded_irq(dev,
+				lt6911c->i2c_client->irq,
+				NULL, lt6911c_res_change_irq_handler,
+				IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+				"lt6911c", lt6911c);
+		if (err) {
+			v4l2_err(sd, "request irq failed! err:%d\n", err);
+			goto err_work_queues;
+		}
+	} else {
+		v4l2_dbg(1, debug, sd, "no irq, cfg poll!\n");
+		INIT_WORK(&lt6911c->work_i2c_poll, lt6911c_work_i2c_poll);
+		timer_setup(&lt6911c->timer, lt6911c_irq_poll_timer, 0);
+		lt6911c->timer.expires = jiffies +
+				       msecs_to_jiffies(POLL_INTERVAL_MS);
+		add_timer(&lt6911c->timer);
+	}
+
+	lt6911c->plugin_irq = gpiod_to_irq(lt6911c->plugin_det_gpio);
+	if (lt6911c->plugin_irq < 0)
+		dev_err(dev, "failed to get plugin det irq, maybe no use\n");
+
+	err = devm_request_threaded_irq(dev, lt6911c->plugin_irq, NULL,
+			plugin_detect_irq_handler, IRQF_TRIGGER_FALLING |
+			IRQF_TRIGGER_RISING | IRQF_ONESHOT, "lt6911c",
+			lt6911c);
+	if (err)
+		dev_err(dev, "failed to register plugin det irq (%d), maybe no use\n", err);
+
+	err = v4l2_ctrl_handler_setup(sd->ctrl_handler);
+	if (err) {
+		v4l2_err(sd, "v4l2 ctrl handler setup failed! err:%d\n", err);
+		goto err_work_queues;
+	}
+
+	lt6911c_config_hpd(sd);
+	v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
+			client->addr << 1, client->adapter->name);
+
+	return 0;
+
+err_work_queues:
+	if (!lt6911c->i2c_client->irq)
+		flush_work(&lt6911c->work_i2c_poll);
+	cancel_delayed_work(&lt6911c->delayed_work_enable_hotplug);
+	cancel_delayed_work(&lt6911c->delayed_work_res_change);
+err_clean_entity:
+#if defined(CONFIG_MEDIA_CONTROLLER)
+	media_entity_cleanup(&sd->entity);
+#endif
+err_free_hdl:
+	v4l2_ctrl_handler_free(&lt6911c->hdl);
+	mutex_destroy(&lt6911c->confctl_mutex);
+	return err;
+}
+
+static int lt6911c_remove(struct i2c_client *client)
+{
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct lt6911c_state *lt6911c = to_state(sd);
+
+	if (!lt6911c->i2c_client->irq) {
+		del_timer_sync(&lt6911c->timer);
+		flush_work(&lt6911c->work_i2c_poll);
+	}
+	cancel_delayed_work_sync(&lt6911c->delayed_work_enable_hotplug);
+	cancel_delayed_work_sync(&lt6911c->delayed_work_res_change);
+	v4l2_async_unregister_subdev(sd);
+	v4l2_device_unregister_subdev(sd);
+#if defined(CONFIG_MEDIA_CONTROLLER)
+	media_entity_cleanup(&sd->entity);
+#endif
+	v4l2_ctrl_handler_free(&lt6911c->hdl);
+	mutex_destroy(&lt6911c->confctl_mutex);
+	clk_disable_unprepare(lt6911c->xvclk);
+
+	return 0;
+}
+
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id lt6911c_of_match[] = {
+	{ .compatible = "lontium,lt6911c" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, lt6911c_of_match);
+#endif
+
+static struct i2c_driver lt6911c_driver = {
+	.driver = {
+		.name = LT6911C_NAME,
+		.of_match_table = of_match_ptr(lt6911c_of_match),
+	},
+	.probe = lt6911c_probe,
+	.remove = lt6911c_remove,
+};
+
+static int __init lt6911c_driver_init(void)
+{
+	return i2c_add_driver(&lt6911c_driver);
+}
+
+static void __exit lt6911c_driver_exit(void)
+{
+	i2c_del_driver(&lt6911c_driver);
+}
+
+device_initcall_sync(lt6911c_driver_init);
+module_exit(lt6911c_driver_exit);
+
+MODULE_DESCRIPTION("Lontium lt6911c HDMI to CSI-2 bridge driver");
+MODULE_AUTHOR("Jianwei Fan <jianwei.fan@rock-chips.com>");
+MODULE_LICENSE("GPL");