text: /*
   * adv7180.c Analog Devices ADV7180 video decoder driver
   * Copyright (c) 2009 Intel Corporation
   * Copyright (C) 2013 Cogent Embedded, Inc.
   * Copyright (C) 2013 Renesas Solutions Corp.
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   */
  
  #include <linux/module.h>
  #include <linux/init.h>
  #include <linux/errno.h>
  #include <linux/kernel.h>
  #include <linux/interrupt.h>
  #include <linux/i2c.h>
  #include <linux/slab.h>
  #include <media/v4l2-ioctl.h>
  #include <linux/videodev2.h>
  #include <media/v4l2-device.h>
  #include <media/v4l2-ctrls.h>
  #include <linux/mutex.h>
  #include <linux/delay.h>
  
  #define ADV7180_STD_AD_PAL_BG_NTSC_J_SECAM		0x0
  #define ADV7180_STD_AD_PAL_BG_NTSC_J_SECAM_PED		0x1
  #define ADV7180_STD_AD_PAL_N_NTSC_J_SECAM		0x2
  #define ADV7180_STD_AD_PAL_N_NTSC_M_SECAM		0x3
  #define ADV7180_STD_NTSC_J				0x4
  #define ADV7180_STD_NTSC_M				0x5
  #define ADV7180_STD_PAL60				0x6
  #define ADV7180_STD_NTSC_443				0x7
  #define ADV7180_STD_PAL_BG				0x8
  #define ADV7180_STD_PAL_N				0x9
  #define ADV7180_STD_PAL_M				0xa
  #define ADV7180_STD_PAL_M_PED				0xb
  #define ADV7180_STD_PAL_COMB_N				0xc
  #define ADV7180_STD_PAL_COMB_N_PED			0xd
  #define ADV7180_STD_PAL_SECAM				0xe
  #define ADV7180_STD_PAL_SECAM_PED			0xf
  
  #define ADV7180_REG_INPUT_CONTROL			0x0000
  #define ADV7180_INPUT_CONTROL_INSEL_MASK		0x0f
  
  #define ADV7182_REG_INPUT_VIDSEL			0x0002
  
  #define ADV7180_REG_EXTENDED_OUTPUT_CONTROL		0x0004
  #define ADV7180_EXTENDED_OUTPUT_CONTROL_NTSCDIS		0xC5
  
  #define ADV7180_REG_AUTODETECT_ENABLE			0x07
  #define ADV7180_AUTODETECT_DEFAULT			0x7f
  /* Contrast */
  #define ADV7180_REG_CON		0x0008	/*Unsigned */
  #define ADV7180_CON_MIN		0
  #define ADV7180_CON_DEF		128
  #define ADV7180_CON_MAX		255
  /* Brightness*/
  #define ADV7180_REG_BRI		0x000a	/*Signed */
  #define ADV7180_BRI_MIN		-128
  #define ADV7180_BRI_DEF		0
  #define ADV7180_BRI_MAX		127
  /* Hue */
  #define ADV7180_REG_HUE		0x000b	/*Signed, inverted */
  #define ADV7180_HUE_MIN		-127
  #define ADV7180_HUE_DEF		0
  #define ADV7180_HUE_MAX		128
  
  #define ADV7180_REG_CTRL		0x000e
  #define ADV7180_CTRL_IRQ_SPACE		0x20
  
  #define ADV7180_REG_PWR_MAN		0x0f
  #define ADV7180_PWR_MAN_ON		0x04
  #define ADV7180_PWR_MAN_OFF		0x24
  #define ADV7180_PWR_MAN_RES		0x80
  
  #define ADV7180_REG_STATUS1		0x0010
  #define ADV7180_STATUS1_IN_LOCK		0x01
  #define ADV7180_STATUS1_AUTOD_MASK	0x70
  #define ADV7180_STATUS1_AUTOD_NTSM_M_J	0x00
  #define ADV7180_STATUS1_AUTOD_NTSC_4_43 0x10
  #define ADV7180_STATUS1_AUTOD_PAL_M	0x20
  #define ADV7180_STATUS1_AUTOD_PAL_60	0x30
  #define ADV7180_STATUS1_AUTOD_PAL_B_G	0x40
  #define ADV7180_STATUS1_AUTOD_SECAM	0x50
  #define ADV7180_STATUS1_AUTOD_PAL_COMB	0x60
  #define ADV7180_STATUS1_AUTOD_SECAM_525	0x70
  
  #define ADV7180_REG_IDENT 0x0011
  #define ADV7180_ID_7180 0x18
  
  #define ADV7180_REG_ICONF1		0x0040
  #define ADV7180_ICONF1_ACTIVE_LOW	0x01
  #define ADV7180_ICONF1_PSYNC_ONLY	0x10
  #define ADV7180_ICONF1_ACTIVE_TO_CLR	0xC0
  /* Saturation */
  #define ADV7180_REG_SD_SAT_CB	0x00e3	/*Unsigned */
  #define ADV7180_REG_SD_SAT_CR	0x00e4	/*Unsigned */
  #define ADV7180_SAT_MIN		0
  #define ADV7180_SAT_DEF		128
  #define ADV7180_SAT_MAX		255
  
  #define ADV7180_IRQ1_LOCK	0x01
  #define ADV7180_IRQ1_UNLOCK	0x02
  #define ADV7180_REG_ISR1	0x0042
  #define ADV7180_REG_ICR1	0x0043
  #define ADV7180_REG_IMR1	0x0044
  #define ADV7180_REG_IMR2	0x0048
  #define ADV7180_IRQ3_AD_CHANGE	0x08
  #define ADV7180_REG_ISR3	0x004A
  #define ADV7180_REG_ICR3	0x004B
  #define ADV7180_REG_IMR3	0x004C
  #define ADV7180_REG_IMR4	0x50
  
  #define ADV7180_REG_NTSC_V_BIT_END	0x00E6
  #define ADV7180_NTSC_V_BIT_END_MANUAL_NVEND	0x4F
  
  #define ADV7180_REG_VPP_SLAVE_ADDR	0xFD
  #define ADV7180_REG_CSI_SLAVE_ADDR	0xFE
  
  #define ADV7180_REG_FLCONTROL 0x40e0
  #define ADV7180_FLCONTROL_FL_ENABLE 0x1
  
  #define ADV7180_CSI_REG_PWRDN	0x00
  #define ADV7180_CSI_PWRDN	0x80
  
  #define ADV7180_INPUT_CVBS_AIN1 0x00
  #define ADV7180_INPUT_CVBS_AIN2 0x01
  #define ADV7180_INPUT_CVBS_AIN3 0x02
  #define ADV7180_INPUT_CVBS_AIN4 0x03
  #define ADV7180_INPUT_CVBS_AIN5 0x04
  #define ADV7180_INPUT_CVBS_AIN6 0x05
  #define ADV7180_INPUT_SVIDEO_AIN1_AIN2 0x06
  #define ADV7180_INPUT_SVIDEO_AIN3_AIN4 0x07
  #define ADV7180_INPUT_SVIDEO_AIN5_AIN6 0x08
  #define ADV7180_INPUT_YPRPB_AIN1_AIN2_AIN3 0x09
  #define ADV7180_INPUT_YPRPB_AIN4_AIN5_AIN6 0x0a
  
  #define ADV7182_INPUT_CVBS_AIN1 0x00
  #define ADV7182_INPUT_CVBS_AIN2 0x01
  #define ADV7182_INPUT_CVBS_AIN3 0x02
  #define ADV7182_INPUT_CVBS_AIN4 0x03
  #define ADV7182_INPUT_CVBS_AIN5 0x04
  #define ADV7182_INPUT_CVBS_AIN6 0x05
  #define ADV7182_INPUT_CVBS_AIN7 0x06
  #define ADV7182_INPUT_CVBS_AIN8 0x07
  #define ADV7182_INPUT_SVIDEO_AIN1_AIN2 0x08
  #define ADV7182_INPUT_SVIDEO_AIN3_AIN4 0x09
  #define ADV7182_INPUT_SVIDEO_AIN5_AIN6 0x0a
  #define ADV7182_INPUT_SVIDEO_AIN7_AIN8 0x0b
  #define ADV7182_INPUT_YPRPB_AIN1_AIN2_AIN3 0x0c
  #define ADV7182_INPUT_YPRPB_AIN4_AIN5_AIN6 0x0d
  #define ADV7182_INPUT_DIFF_CVBS_AIN1_AIN2 0x0e
  #define ADV7182_INPUT_DIFF_CVBS_AIN3_AIN4 0x0f
  #define ADV7182_INPUT_DIFF_CVBS_AIN5_AIN6 0x10
  #define ADV7182_INPUT_DIFF_CVBS_AIN7_AIN8 0x11
  
  #define ADV7180_DEFAULT_CSI_I2C_ADDR 0x44
  #define ADV7180_DEFAULT_VPP_I2C_ADDR 0x42
  
  #define V4L2_CID_ADV_FAST_SWITCH	(V4L2_CID_USER_ADV7180_BASE + 0x00)
  
  struct adv7180_state;
  
  #define ADV7180_FLAG_RESET_POWERED	BIT(0)
  #define ADV7180_FLAG_V2			BIT(1)
  #define ADV7180_FLAG_MIPI_CSI2		BIT(2)
  #define ADV7180_FLAG_I2P		BIT(3)
  
  struct adv7180_chip_info {
  	unsigned int flags;
  	unsigned int valid_input_mask;
  	int (*set_std)(struct adv7180_state *st, unsigned int std);
  	int (*select_input)(struct adv7180_state *st, unsigned int input);
  	int (*init)(struct adv7180_state *state);
  };
  
  struct adv7180_state {
  	struct v4l2_ctrl_handler ctrl_hdl;
  	struct v4l2_subdev	sd;
  	struct media_pad	pad;
  	struct mutex		mutex; /* mutual excl. when accessing chip */
  	int			irq;
  	v4l2_std_id		curr_norm;
  	bool			autodetect;
  	bool			powered;
  	u8			input;
  
  	struct i2c_client	*client;
  	unsigned int		register_page;
  	struct i2c_client	*csi_client;
  	struct i2c_client	*vpp_client;
  	const struct adv7180_chip_info *chip_info;
  	enum v4l2_field		field;
  };
  #define to_adv7180_sd(_ctrl) (&container_of(_ctrl->handler,		\
  					    struct adv7180_state,	\
  					    ctrl_hdl)->sd)
  
  static int adv7180_select_page(struct adv7180_state *state, unsigned int page)
  {
  	if (state->register_page != page) {
  		i2c_smbus_write_byte_data(state->client, ADV7180_REG_CTRL,
  			page);
  		state->register_page = page;
  	}
  
  	return 0;
  }
  
  static int adv7180_write(struct adv7180_state *state, unsigned int reg,
  	unsigned int value)
  {
  	lockdep_assert_held(&state->mutex);
  	adv7180_select_page(state, reg >> 8);
  	return i2c_smbus_write_byte_data(state->client, reg & 0xff, value);
  }
  
  static int adv7180_read(struct adv7180_state *state, unsigned int reg)
  {
  	lockdep_assert_held(&state->mutex);
  	adv7180_select_page(state, reg >> 8);
  	return i2c_smbus_read_byte_data(state->client, reg & 0xff);
  }
  
  static int adv7180_csi_write(struct adv7180_state *state, unsigned int reg,
  	unsigned int value)
  {
  	return i2c_smbus_write_byte_data(state->csi_client, reg, value);
  }
  
  static int adv7180_set_video_standard(struct adv7180_state *state,
  	unsigned int std)
  {
  	return state->chip_info->set_std(state, std);
  }
  
  static int adv7180_vpp_write(struct adv7180_state *state, unsigned int reg,
  	unsigned int value)
  {
  	return i2c_smbus_write_byte_data(state->vpp_client, reg, value);
  }
  
  static v4l2_std_id adv7180_std_to_v4l2(u8 status1)
  {
  	/* in case V4L2_IN_ST_NO_SIGNAL */
  	if (!(status1 & ADV7180_STATUS1_IN_LOCK))
  		return V4L2_STD_UNKNOWN;
  
  	switch (status1 & ADV7180_STATUS1_AUTOD_MASK) {
  	case ADV7180_STATUS1_AUTOD_NTSM_M_J:
  		return V4L2_STD_NTSC;
  	case ADV7180_STATUS1_AUTOD_NTSC_4_43:
  		return V4L2_STD_NTSC_443;
  	case ADV7180_STATUS1_AUTOD_PAL_M:
  		return V4L2_STD_PAL_M;
  	case ADV7180_STATUS1_AUTOD_PAL_60:
  		return V4L2_STD_PAL_60;
  	case ADV7180_STATUS1_AUTOD_PAL_B_G:
  		return V4L2_STD_PAL;
  	case ADV7180_STATUS1_AUTOD_SECAM:
  		return V4L2_STD_SECAM;
  	case ADV7180_STATUS1_AUTOD_PAL_COMB:
  		return V4L2_STD_PAL_Nc | V4L2_STD_PAL_N;
  	case ADV7180_STATUS1_AUTOD_SECAM_525:
  		return V4L2_STD_SECAM;
  	default:
  		return V4L2_STD_UNKNOWN;
  	}
  }
  
  static int v4l2_std_to_adv7180(v4l2_std_id std)
  {
  	if (std == V4L2_STD_PAL_60)
  		return ADV7180_STD_PAL60;
  	if (std == V4L2_STD_NTSC_443)
  		return ADV7180_STD_NTSC_443;
  	if (std == V4L2_STD_PAL_N)
  		return ADV7180_STD_PAL_N;
  	if (std == V4L2_STD_PAL_M)
  		return ADV7180_STD_PAL_M;
  	if (std == V4L2_STD_PAL_Nc)
  		return ADV7180_STD_PAL_COMB_N;
  
  	if (std & V4L2_STD_PAL)
  		return ADV7180_STD_PAL_BG;
  	if (std & V4L2_STD_NTSC)
  		return ADV7180_STD_NTSC_M;
  	if (std & V4L2_STD_SECAM)
  		return ADV7180_STD_PAL_SECAM;
  
  	return -EINVAL;
  }
  
  static u32 adv7180_status_to_v4l2(u8 status1)
  {
  	if (!(status1 & ADV7180_STATUS1_IN_LOCK))
  		return V4L2_IN_ST_NO_SIGNAL;
  
  	return 0;
  }
  
  static int __adv7180_status(struct adv7180_state *state, u32 *status,
  			    v4l2_std_id *std)
  {
  	int status1 = adv7180_read(state, ADV7180_REG_STATUS1);
  
  	if (status1 < 0)
  		return status1;
  
  	if (status)
  		*status = adv7180_status_to_v4l2(status1);
  	if (std)
  		*std = adv7180_std_to_v4l2(status1);
  
  	return 0;
  }
  
  static inline struct adv7180_state *to_state(struct v4l2_subdev *sd)
  {
  	return container_of(sd, struct adv7180_state, sd);
  }
  
  static int adv7180_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
  {
  	struct adv7180_state *state = to_state(sd);
  	int err = mutex_lock_interruptible(&state->mutex);
  	if (err)
  		return err;
  
  	/* when we are interrupt driven we know the state */
  	if (!state->autodetect || state->irq > 0)
  		*std = state->curr_norm;
  	else
  		err = __adv7180_status(state, NULL, std);
  
  	mutex_unlock(&state->mutex);
  	return err;
  }
  
  static int adv7180_s_routing(struct v4l2_subdev *sd, u32 input,
  			     u32 output, u32 config)
  {
  	struct adv7180_state *state = to_state(sd);
  	int ret = mutex_lock_interruptible(&state->mutex);
  
  	if (ret)
  		return ret;
  
  	if (input > 31 || !(BIT(input) & state->chip_info->valid_input_mask)) {
  		ret = -EINVAL;
  		goto out;
  	}
  
  	ret = state->chip_info->select_input(state, input);
  
  	if (ret == 0)
  		state->input = input;
  out:
  	mutex_unlock(&state->mutex);
  	return ret;
  }
  
  static int adv7180_g_input_status(struct v4l2_subdev *sd, u32 *status)
  {
  	struct adv7180_state *state = to_state(sd);
  	int ret = mutex_lock_interruptible(&state->mutex);
  	if (ret)
  		return ret;
  
  	ret = __adv7180_status(state, status, NULL);
  	mutex_unlock(&state->mutex);
  	return ret;
  }
  
  static int adv7180_program_std(struct adv7180_state *state)
  {
  	int ret;
  
  	if (state->autodetect) {
  		ret = adv7180_set_video_standard(state,
  			ADV7180_STD_AD_PAL_BG_NTSC_J_SECAM);
  		if (ret < 0)
  			return ret;
  
  		__adv7180_status(state, NULL, &state->curr_norm);
  	} else {
  		ret = v4l2_std_to_adv7180(state->curr_norm);
  		if (ret < 0)
  			return ret;
  
  		ret = adv7180_set_video_standard(state, ret);
  		if (ret < 0)
  			return ret;
  	}
  
  	return 0;
  }
  
  static int adv7180_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
  {
  	struct adv7180_state *state = to_state(sd);
  	int ret = mutex_lock_interruptible(&state->mutex);
  
  	if (ret)
  		return ret;
  
  	/* all standards -> autodetect */
  	if (std == V4L2_STD_ALL) {
  		state->autodetect = true;
  	} else {
  		/* Make sure we can support this std */
  		ret = v4l2_std_to_adv7180(std);
  		if (ret < 0)
  			goto out;
  
  		state->curr_norm = std;
  		state->autodetect = false;
  	}
  
  	ret = adv7180_program_std(state);
  out:
  	mutex_unlock(&state->mutex);
  	return ret;
  }
  
  static int adv7180_set_power(struct adv7180_state *state, bool on)
  {
  	u8 val;
  	int ret;
  
  	if (on)
  		val = ADV7180_PWR_MAN_ON;
  	else
  		val = ADV7180_PWR_MAN_OFF;
  
  	ret = adv7180_write(state, ADV7180_REG_PWR_MAN, val);
  	if (ret)
  		return ret;
  
  	if (state->chip_info->flags & ADV7180_FLAG_MIPI_CSI2) {
  		if (on) {
  			adv7180_csi_write(state, 0xDE, 0x02);
  			adv7180_csi_write(state, 0xD2, 0xF7);
  			adv7180_csi_write(state, 0xD8, 0x65);
  			adv7180_csi_write(state, 0xE0, 0x09);
  			adv7180_csi_write(state, 0x2C, 0x00);
  			if (state->field == V4L2_FIELD_NONE)
  				adv7180_csi_write(state, 0x1D, 0x80);
  			adv7180_csi_write(state, 0x00, 0x00);
  		} else {
  			adv7180_csi_write(state, 0x00, 0x80);
  		}
  	}
  
  	return 0;
  }
  
  static int adv7180_s_power(struct v4l2_subdev *sd, int on)
  {
  	struct adv7180_state *state = to_state(sd);
  	int ret;
  
  	ret = mutex_lock_interruptible(&state->mutex);
  	if (ret)
  		return ret;
  
  	ret = adv7180_set_power(state, on);
  	if (ret == 0)
  		state->powered = on;
  
  	mutex_unlock(&state->mutex);
  	return ret;
  }
  
  static int adv7180_s_ctrl(struct v4l2_ctrl *ctrl)
  {
  	struct v4l2_subdev *sd = to_adv7180_sd(ctrl);
  	struct adv7180_state *state = to_state(sd);
  	int ret = mutex_lock_interruptible(&state->mutex);
  	int val;
  
  	if (ret)
  		return ret;
  	val = ctrl->val;
  	switch (ctrl->id) {
  	case V4L2_CID_BRIGHTNESS:
  		ret = adv7180_write(state, ADV7180_REG_BRI, val);
  		break;
  	case V4L2_CID_HUE:
  		/*Hue is inverted according to HSL chart */
  		ret = adv7180_write(state, ADV7180_REG_HUE, -val);
  		break;
  	case V4L2_CID_CONTRAST:
  		ret = adv7180_write(state, ADV7180_REG_CON, val);
  		break;
  	case V4L2_CID_SATURATION:
  		/*
  		 *This could be V4L2_CID_BLUE_BALANCE/V4L2_CID_RED_BALANCE
  		 *Let's not confuse the user, everybody understands saturation
  		 */
  		ret = adv7180_write(state, ADV7180_REG_SD_SAT_CB, val);
  		if (ret < 0)
  			break;
  		ret = adv7180_write(state, ADV7180_REG_SD_SAT_CR, val);
  		break;
  	case V4L2_CID_ADV_FAST_SWITCH:
  		if (ctrl->val) {
  			/* ADI required write */
  			adv7180_write(state, 0x80d9, 0x44);
  			adv7180_write(state, ADV7180_REG_FLCONTROL,
  				ADV7180_FLCONTROL_FL_ENABLE);
  		} else {
  			/* ADI required write */
  			adv7180_write(state, 0x80d9, 0xc4);
  			adv7180_write(state, ADV7180_REG_FLCONTROL, 0x00);
  		}
  		break;
  	default:
  		ret = -EINVAL;
  	}
  
  	mutex_unlock(&state->mutex);
  	return ret;
  }
  
  static const struct v4l2_ctrl_ops adv7180_ctrl_ops = {
  	.s_ctrl = adv7180_s_ctrl,
  };
  
  static const struct v4l2_ctrl_config adv7180_ctrl_fast_switch = {
  	.ops = &adv7180_ctrl_ops,
  	.id = V4L2_CID_ADV_FAST_SWITCH,
  	.name = "Fast Switching",
  	.type = V4L2_CTRL_TYPE_BOOLEAN,
  	.min = 0,
  	.max = 1,
  	.step = 1,
  };
  
  static int adv7180_init_controls(struct adv7180_state *state)
  {
  	v4l2_ctrl_handler_init(&state->ctrl_hdl, 4);
  
  	v4l2_ctrl_new_std(&state->ctrl_hdl, &adv7180_ctrl_ops,
  			  V4L2_CID_BRIGHTNESS, ADV7180_BRI_MIN,
  			  ADV7180_BRI_MAX, 1, ADV7180_BRI_DEF);
  	v4l2_ctrl_new_std(&state->ctrl_hdl, &adv7180_ctrl_ops,
  			  V4L2_CID_CONTRAST, ADV7180_CON_MIN,
  			  ADV7180_CON_MAX, 1, ADV7180_CON_DEF);
  	v4l2_ctrl_new_std(&state->ctrl_hdl, &adv7180_ctrl_ops,
  			  V4L2_CID_SATURATION, ADV7180_SAT_MIN,
  			  ADV7180_SAT_MAX, 1, ADV7180_SAT_DEF);
  	v4l2_ctrl_new_std(&state->ctrl_hdl, &adv7180_ctrl_ops,
  			  V4L2_CID_HUE, ADV7180_HUE_MIN,
  			  ADV7180_HUE_MAX, 1, ADV7180_HUE_DEF);
  	v4l2_ctrl_new_custom(&state->ctrl_hdl, &adv7180_ctrl_fast_switch, NULL);
  
  	state->sd.ctrl_handler = &state->ctrl_hdl;
  	if (state->ctrl_hdl.error) {
  		int err = state->ctrl_hdl.error;
  
  		v4l2_ctrl_handler_free(&state->ctrl_hdl);
  		return err;
  	}
  	v4l2_ctrl_handler_setup(&state->ctrl_hdl);
  
  	return 0;
  }
  static void adv7180_exit_controls(struct adv7180_state *state)
  {
  	v4l2_ctrl_handler_free(&state->ctrl_hdl);
  }
  
  static int adv7180_enum_mbus_code(struct v4l2_subdev *sd,
  				  struct v4l2_subdev_fh *fh,
  				  struct v4l2_subdev_mbus_code_enum *code)
  {
  	if (code->index != 0)
  		return -EINVAL;
  
  	code->code = MEDIA_BUS_FMT_YUYV8_2X8;
  
  	return 0;
  }
  
  static int adv7180_mbus_fmt(struct v4l2_subdev *sd,
  			    struct v4l2_mbus_framefmt *fmt)
  {
  	struct adv7180_state *state = to_state(sd);
  
  	fmt->code = MEDIA_BUS_FMT_YUYV8_2X8;
  	fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
  	fmt->width = 720;
  	fmt->height = state->curr_norm & V4L2_STD_525_60 ? 480 : 576;
  
  	return 0;
  }
  
  static int adv7180_set_field_mode(struct adv7180_state *state)
  {
  	if (!(state->chip_info->flags & ADV7180_FLAG_I2P))
  		return 0;
  
  	if (state->field == V4L2_FIELD_NONE) {
  		if (state->chip_info->flags & ADV7180_FLAG_MIPI_CSI2) {
  			adv7180_csi_write(state, 0x01, 0x20);
  			adv7180_csi_write(state, 0x02, 0x28);
  			adv7180_csi_write(state, 0x03, 0x38);
  			adv7180_csi_write(state, 0x04, 0x30);
  			adv7180_csi_write(state, 0x05, 0x30);
  			adv7180_csi_write(state, 0x06, 0x80);
  			adv7180_csi_write(state, 0x07, 0x70);
  			adv7180_csi_write(state, 0x08, 0x50);
  		}
  		adv7180_vpp_write(state, 0xa3, 0x00);
  		adv7180_vpp_write(state, 0x5b, 0x00);
  		adv7180_vpp_write(state, 0x55, 0x80);
  	} else {
  		if (state->chip_info->flags & ADV7180_FLAG_MIPI_CSI2) {
  			adv7180_csi_write(state, 0x01, 0x18);
  			adv7180_csi_write(state, 0x02, 0x18);
  			adv7180_csi_write(state, 0x03, 0x30);
  			adv7180_csi_write(state, 0x04, 0x20);
  			adv7180_csi_write(state, 0x05, 0x28);
  			adv7180_csi_write(state, 0x06, 0x40);
  			adv7180_csi_write(state, 0x07, 0x58);
  			adv7180_csi_write(state, 0x08, 0x30);
  		}
  		adv7180_vpp_write(state, 0xa3, 0x70);
  		adv7180_vpp_write(state, 0x5b, 0x80);
  		adv7180_vpp_write(state, 0x55, 0x00);
  	}
  
  	return 0;
  }
  
  static int adv7180_get_pad_format(struct v4l2_subdev *sd,
  				  struct v4l2_subdev_fh *fh,
  				  struct v4l2_subdev_format *format)
  {
  	struct adv7180_state *state = to_state(sd);
  
  	if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
  		format->format = *v4l2_subdev_get_try_format(fh, 0);
  	} else {
  		adv7180_mbus_fmt(sd, &format->format);
  		format->format.field = state->field;
  	}
  
  	return 0;
  }
  
  static int adv7180_set_pad_format(struct v4l2_subdev *sd,
  				  struct v4l2_subdev_fh *fh,
  				  struct v4l2_subdev_format *format)
  {
  	struct adv7180_state *state = to_state(sd);
  	struct v4l2_mbus_framefmt *framefmt;
  
  	switch (format->format.field) {
  	case V4L2_FIELD_NONE:
  		if (!(state->chip_info->flags & ADV7180_FLAG_I2P))
  			format->format.field = V4L2_FIELD_INTERLACED;
  		break;
  	default:
  		format->format.field = V4L2_FIELD_INTERLACED;
  		break;
  	}
  
  	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
  		framefmt = &format->format;
  		if (state->field != format->format.field) {
  			state->field = format->format.field;
  			adv7180_set_power(state, false);
  			adv7180_set_field_mode(state);
  			adv7180_set_power(state, true);
  		}
  	} else {
  		framefmt = v4l2_subdev_get_try_format(fh, 0);
  		*framefmt = format->format;
  	}
  
  	return adv7180_mbus_fmt(sd, framefmt);
  }
  
  static int adv7180_g_mbus_config(struct v4l2_subdev *sd,
  				 struct v4l2_mbus_config *cfg)
  {
  	struct adv7180_state *state = to_state(sd);
  
  	if (state->chip_info->flags & ADV7180_FLAG_MIPI_CSI2) {
  		cfg->type = V4L2_MBUS_CSI2;
  		cfg->flags = V4L2_MBUS_CSI2_1_LANE |
  				V4L2_MBUS_CSI2_CHANNEL_0 |
  				V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
  	} else {
  		/*
  		 * The ADV7180 sensor supports BT.601/656 output modes.
  		 * The BT.656 is default and not yet configurable by s/w.
  		 */
  		cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING |
  				 V4L2_MBUS_DATA_ACTIVE_HIGH;
  		cfg->type = V4L2_MBUS_BT656;
  	}
  
  	return 0;
  }
  
  static const struct v4l2_subdev_video_ops adv7180_video_ops = {
  	.s_std = adv7180_s_std,
  	.querystd = adv7180_querystd,
  	.g_input_status = adv7180_g_input_status,
  	.s_routing = adv7180_s_routing,
  	.g_mbus_config = adv7180_g_mbus_config,
  };
  
  
  static const struct v4l2_subdev_core_ops adv7180_core_ops = {
  	.s_power = adv7180_s_power,
  };
  
  static const struct v4l2_subdev_pad_ops adv7180_pad_ops = {
  	.enum_mbus_code = adv7180_enum_mbus_code,
  	.set_fmt = adv7180_set_pad_format,
  	.get_fmt = adv7180_get_pad_format,
  };
  
  static const struct v4l2_subdev_ops adv7180_ops = {
  	.core = &adv7180_core_ops,
  	.video = &adv7180_video_ops,
  	.pad = &adv7180_pad_ops,
  };
  
  static irqreturn_t adv7180_irq(int irq, void *devid)
  {
  	struct adv7180_state *state = devid;
  	u8 isr3;
  
  	mutex_lock(&state->mutex);
  	isr3 = adv7180_read(state, ADV7180_REG_ISR3);
  	/* clear */
  	adv7180_write(state, ADV7180_REG_ICR3, isr3);
  
  	if (isr3 & ADV7180_IRQ3_AD_CHANGE && state->autodetect)
  		__adv7180_status(state, NULL, &state->curr_norm);
  	mutex_unlock(&state->mutex);
  
  	return IRQ_HANDLED;
  }
  
  static int adv7180_init(struct adv7180_state *state)
  {
  	int ret;
  
  	/* ITU-R BT.656-4 compatible */
  	ret = adv7180_write(state, ADV7180_REG_EXTENDED_OUTPUT_CONTROL,
  			ADV7180_EXTENDED_OUTPUT_CONTROL_NTSCDIS);
  	if (ret < 0)
  		return ret;
  
  	/* Manually set V bit end position in NTSC mode */
  	return adv7180_write(state, ADV7180_REG_NTSC_V_BIT_END,
  					ADV7180_NTSC_V_BIT_END_MANUAL_NVEND);
  }
  
  static int adv7180_set_std(struct adv7180_state *state, unsigned int std)
  {
  	return adv7180_write(state, ADV7180_REG_INPUT_CONTROL,
  		(std << 4) | state->input);
  }
  
  static int adv7180_select_input(struct adv7180_state *state, unsigned int input)
  {
  	int ret;
  
  	ret = adv7180_read(state, ADV7180_REG_INPUT_CONTROL);
  	if (ret < 0)
  		return ret;
  
  	ret &= ~ADV7180_INPUT_CONTROL_INSEL_MASK;
  	ret |= input;
  	return adv7180_write(state, ADV7180_REG_INPUT_CONTROL, ret);
  }
  
  static int adv7182_init(struct adv7180_state *state)
  {
  	if (state->chip_info->flags & ADV7180_FLAG_MIPI_CSI2)
  		adv7180_write(state, ADV7180_REG_CSI_SLAVE_ADDR,
  			ADV7180_DEFAULT_CSI_I2C_ADDR << 1);
  
  	if (state->chip_info->flags & ADV7180_FLAG_I2P)
  		adv7180_write(state, ADV7180_REG_VPP_SLAVE_ADDR,
  			ADV7180_DEFAULT_VPP_I2C_ADDR << 1);
  
  	if (state->chip_info->flags & ADV7180_FLAG_V2) {
  		/* ADI recommended writes for improved video quality */
  		adv7180_write(state, 0x0080, 0x51);
  		adv7180_write(state, 0x0081, 0x51);
  		adv7180_write(state, 0x0082, 0x68);
  	}
  
  	/* ADI required writes */
  	if (state->chip_info->flags & ADV7180_FLAG_MIPI_CSI2) {
  		adv7180_write(state, 0x0003, 0x4e);
  		adv7180_write(state, 0x0004, 0x57);
  		adv7180_write(state, 0x001d, 0xc0);
  	} else {
  		if (state->chip_info->flags & ADV7180_FLAG_V2)
  			adv7180_write(state, 0x0004, 0x17);
  		else
  			adv7180_write(state, 0x0004, 0x07);
  		adv7180_write(state, 0x0003, 0x0c);
  		adv7180_write(state, 0x001d, 0x40);
  	}
  
  	adv7180_write(state, 0x0013, 0x00);
  
  	return 0;
  }
  
  static int adv7182_set_std(struct adv7180_state *state, unsigned int std)
  {
  	return adv7180_write(state, ADV7182_REG_INPUT_VIDSEL, std << 4);
  }
  
  enum adv7182_input_type {
  	ADV7182_INPUT_TYPE_CVBS,
  	ADV7182_INPUT_TYPE_DIFF_CVBS,
  	ADV7182_INPUT_TYPE_SVIDEO,
  	ADV7182_INPUT_TYPE_YPBPR,
  };
  
  static enum adv7182_input_type adv7182_get_input_type(unsigned int input)
  {
  	switch (input) {
  	case ADV7182_INPUT_CVBS_AIN1:
  	case ADV7182_INPUT_CVBS_AIN2:
  	case ADV7182_INPUT_CVBS_AIN3:
  	case ADV7182_INPUT_CVBS_AIN4:
  	case ADV7182_INPUT_CVBS_AIN5:
  	case ADV7182_INPUT_CVBS_AIN6:
  	case ADV7182_INPUT_CVBS_AIN7:
  	case ADV7182_INPUT_CVBS_AIN8:
  		return ADV7182_INPUT_TYPE_CVBS;
  	case ADV7182_INPUT_SVIDEO_AIN1_AIN2:
  	case ADV7182_INPUT_SVIDEO_AIN3_AIN4:
  	case ADV7182_INPUT_SVIDEO_AIN5_AIN6:
  	case ADV7182_INPUT_SVIDEO_AIN7_AIN8:
  		return ADV7182_INPUT_TYPE_SVIDEO;
  	case ADV7182_INPUT_YPRPB_AIN1_AIN2_AIN3:
  	case ADV7182_INPUT_YPRPB_AIN4_AIN5_AIN6:
  		return ADV7182_INPUT_TYPE_YPBPR;
  	case ADV7182_INPUT_DIFF_CVBS_AIN1_AIN2:
  	case ADV7182_INPUT_DIFF_CVBS_AIN3_AIN4:
  	case ADV7182_INPUT_DIFF_CVBS_AIN5_AIN6:
  	case ADV7182_INPUT_DIFF_CVBS_AIN7_AIN8:
  		return ADV7182_INPUT_TYPE_DIFF_CVBS;
  	default: /* Will never happen */
  		return 0;
  	}
  }
  
  /* ADI recommended writes to registers 0x52, 0x53, 0x54 */
  static unsigned int adv7182_lbias_settings[][3] = {
  	[ADV7182_INPUT_TYPE_CVBS] = { 0xCB, 0x4E, 0x80 },
  	[ADV7182_INPUT_TYPE_DIFF_CVBS] = { 0xC0, 0x4E, 0x80 },
  	[ADV7182_INPUT_TYPE_SVIDEO] = { 0x0B, 0xCE, 0x80 },
  	[ADV7182_INPUT_TYPE_YPBPR] = { 0x0B, 0x4E, 0xC0 },
  };
  
  static unsigned int adv7280_lbias_settings[][3] = {
  	[ADV7182_INPUT_TYPE_CVBS] = { 0xCD, 0x4E, 0x80 },
  	[ADV7182_INPUT_TYPE_DIFF_CVBS] = { 0xC0, 0x4E, 0x80 },
  	[ADV7182_INPUT_TYPE_SVIDEO] = { 0x0B, 0xCE, 0x80 },
  	[ADV7182_INPUT_TYPE_YPBPR] = { 0x0B, 0x4E, 0xC0 },
  };
  
  static int adv7182_select_input(struct adv7180_state *state, unsigned int input)
  {
  	enum adv7182_input_type input_type;
  	unsigned int *lbias;
  	unsigned int i;
  	int ret;
  
  	ret = adv7180_write(state, ADV7180_REG_INPUT_CONTROL, input);
  	if (ret)
  		return ret;
  
  	/* Reset clamp circuitry - ADI recommended writes */
  	adv7180_write(state, 0x809c, 0x00);
  	adv7180_write(state, 0x809c, 0xff);
  
  	input_type = adv7182_get_input_type(input);
  
  	switch (input_type) {
  	case ADV7182_INPUT_TYPE_CVBS:
  	case ADV7182_INPUT_TYPE_DIFF_CVBS:
  		/* ADI recommends to use the SH1 filter */
  		adv7180_write(state, 0x0017, 0x41);
  		break;
  	default:
  		adv7180_write(state, 0x0017, 0x01);
  		break;
  	}
  
  	if (state->chip_info->flags & ADV7180_FLAG_V2)
  		lbias = adv7280_lbias_settings[input_type];
  	else
  		lbias = adv7182_lbias_settings[input_type];
  
  	for (i = 0; i < ARRAY_SIZE(adv7182_lbias_settings[0]); i++)
  		adv7180_write(state, 0x0052 + i, lbias[i]);
  
  	if (input_type == ADV7182_INPUT_TYPE_DIFF_CVBS) {
  		/* ADI required writes to make differential CVBS work */
  		adv7180_write(state, 0x005f, 0xa8);
  		adv7180_write(state, 0x005a, 0x90);
  		adv7180_write(state, 0x0060, 0xb0);
  		adv7180_write(state, 0x80b6, 0x08);
  		adv7180_write(state, 0x80c0, 0xa0);
  	} else {
  		adv7180_write(state, 0x005f, 0xf0);
  		adv7180_write(state, 0x005a, 0xd0);
  		adv7180_write(state, 0x0060, 0x10);
  		adv7180_write(state, 0x80b6, 0x9c);
  		adv7180_write(state, 0x80c0, 0x00);
  	}
  
  	return 0;
  }
  
  static const struct adv7180_chip_info adv7180_info = {
  	.flags = ADV7180_FLAG_RESET_POWERED,
  	/* We cannot discriminate between LQFP and 40-pin LFCSP, so accept
  	 * all inputs and let the card driver take care of validation
  	 */
  	.valid_input_mask = BIT(ADV7180_INPUT_CVBS_AIN1) |
  		BIT(ADV7180_INPUT_CVBS_AIN2) |
  		BIT(ADV7180_INPUT_CVBS_AIN3) |
  		BIT(ADV7180_INPUT_CVBS_AIN4) |
  		BIT(ADV7180_INPUT_CVBS_AIN5) |
  		BIT(ADV7180_INPUT_CVBS_AIN6) |
  		BIT(ADV7180_INPUT_SVIDEO_AIN1_AIN2) |
  		BIT(ADV7180_INPUT_SVIDEO_AIN3_AIN4) |
  		BIT(ADV7180_INPUT_SVIDEO_AIN5_AIN6) |
  		BIT(ADV7180_INPUT_YPRPB_AIN1_AIN2_AIN3) |
  		BIT(ADV7180_INPUT_YPRPB_AIN4_AIN5_AIN6),
  	.init = adv7180_init,
  	.set_std = adv7180_set_std,
  	.select_input = adv7180_select_input,
  };
  
  static const struct adv7180_chip_info adv7182_info = {
  	.valid_input_mask = BIT(ADV7182_INPUT_CVBS_AIN1) |
  		BIT(ADV7182_INPUT_CVBS_AIN2) |
  		BIT(ADV7182_INPUT_CVBS_AIN3) |
  		BIT(ADV7182_INPUT_CVBS_AIN4) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN1_AIN2) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN3_AIN4) |
  		BIT(ADV7182_INPUT_YPRPB_AIN1_AIN2_AIN3) |
  		BIT(ADV7182_INPUT_DIFF_CVBS_AIN1_AIN2) |
  		BIT(ADV7182_INPUT_DIFF_CVBS_AIN3_AIN4),
  	.init = adv7182_init,
  	.set_std = adv7182_set_std,
  	.select_input = adv7182_select_input,
  };
  
  static const struct adv7180_chip_info adv7280_info = {
  	.flags = ADV7180_FLAG_V2 | ADV7180_FLAG_I2P,
  	.valid_input_mask = BIT(ADV7182_INPUT_CVBS_AIN1) |
  		BIT(ADV7182_INPUT_CVBS_AIN2) |
  		BIT(ADV7182_INPUT_CVBS_AIN3) |
  		BIT(ADV7182_INPUT_CVBS_AIN4) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN1_AIN2) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN3_AIN4) |
  		BIT(ADV7182_INPUT_YPRPB_AIN1_AIN2_AIN3),
  	.init = adv7182_init,
  	.set_std = adv7182_set_std,
  	.select_input = adv7182_select_input,
  };
  
  static const struct adv7180_chip_info adv7280_m_info = {
  	.flags = ADV7180_FLAG_V2 | ADV7180_FLAG_MIPI_CSI2 | ADV7180_FLAG_I2P,
  	.valid_input_mask = BIT(ADV7182_INPUT_CVBS_AIN1) |
  		BIT(ADV7182_INPUT_CVBS_AIN2) |
  		BIT(ADV7182_INPUT_CVBS_AIN3) |
  		BIT(ADV7182_INPUT_CVBS_AIN4) |
  		BIT(ADV7182_INPUT_CVBS_AIN5) |
  		BIT(ADV7182_INPUT_CVBS_AIN6) |
  		BIT(ADV7182_INPUT_CVBS_AIN7) |
  		BIT(ADV7182_INPUT_CVBS_AIN8) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN1_AIN2) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN3_AIN4) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN5_AIN6) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN7_AIN8) |
  		BIT(ADV7182_INPUT_YPRPB_AIN1_AIN2_AIN3) |
  		BIT(ADV7182_INPUT_YPRPB_AIN4_AIN5_AIN6),
  	.init = adv7182_init,
  	.set_std = adv7182_set_std,
  	.select_input = adv7182_select_input,
  };
  
  static const struct adv7180_chip_info adv7281_info = {
  	.flags = ADV7180_FLAG_V2 | ADV7180_FLAG_MIPI_CSI2,
  	.valid_input_mask = BIT(ADV7182_INPUT_CVBS_AIN1) |
  		BIT(ADV7182_INPUT_CVBS_AIN2) |
  		BIT(ADV7182_INPUT_CVBS_AIN7) |
  		BIT(ADV7182_INPUT_CVBS_AIN8) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN1_AIN2) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN7_AIN8) |
  		BIT(ADV7182_INPUT_DIFF_CVBS_AIN1_AIN2) |
  		BIT(ADV7182_INPUT_DIFF_CVBS_AIN7_AIN8),
  	.init = adv7182_init,
  	.set_std = adv7182_set_std,
  	.select_input = adv7182_select_input,
  };
  
  static const struct adv7180_chip_info adv7281_m_info = {
  	.flags = ADV7180_FLAG_V2 | ADV7180_FLAG_MIPI_CSI2,
  	.valid_input_mask = BIT(ADV7182_INPUT_CVBS_AIN1) |
  		BIT(ADV7182_INPUT_CVBS_AIN2) |
  		BIT(ADV7182_INPUT_CVBS_AIN3) |
  		BIT(ADV7182_INPUT_CVBS_AIN4) |
  		BIT(ADV7182_INPUT_CVBS_AIN7) |
  		BIT(ADV7182_INPUT_CVBS_AIN8) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN1_AIN2) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN3_AIN4) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN7_AIN8) |
  		BIT(ADV7182_INPUT_YPRPB_AIN1_AIN2_AIN3) |
  		BIT(ADV7182_INPUT_DIFF_CVBS_AIN1_AIN2) |
  		BIT(ADV7182_INPUT_DIFF_CVBS_AIN3_AIN4) |
  		BIT(ADV7182_INPUT_DIFF_CVBS_AIN7_AIN8),
  	.init = adv7182_init,
  	.set_std = adv7182_set_std,
  	.select_input = adv7182_select_input,
  };
  
  static const struct adv7180_chip_info adv7281_ma_info = {
  	.flags = ADV7180_FLAG_V2 | ADV7180_FLAG_MIPI_CSI2,
  	.valid_input_mask = BIT(ADV7182_INPUT_CVBS_AIN1) |
  		BIT(ADV7182_INPUT_CVBS_AIN2) |
  		BIT(ADV7182_INPUT_CVBS_AIN3) |
  		BIT(ADV7182_INPUT_CVBS_AIN4) |
  		BIT(ADV7182_INPUT_CVBS_AIN5) |
  		BIT(ADV7182_INPUT_CVBS_AIN6) |
  		BIT(ADV7182_INPUT_CVBS_AIN7) |
  		BIT(ADV7182_INPUT_CVBS_AIN8) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN1_AIN2) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN3_AIN4) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN5_AIN6) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN7_AIN8) |
  		BIT(ADV7182_INPUT_YPRPB_AIN1_AIN2_AIN3) |
  		BIT(ADV7182_INPUT_YPRPB_AIN4_AIN5_AIN6) |
  		BIT(ADV7182_INPUT_DIFF_CVBS_AIN1_AIN2) |
  		BIT(ADV7182_INPUT_DIFF_CVBS_AIN3_AIN4) |
  		BIT(ADV7182_INPUT_DIFF_CVBS_AIN5_AIN6) |
  		BIT(ADV7182_INPUT_DIFF_CVBS_AIN7_AIN8),
  	.init = adv7182_init,
  	.set_std = adv7182_set_std,
  	.select_input = adv7182_select_input,
  };
  
  static const struct adv7180_chip_info adv7282_info = {
  	.flags = ADV7180_FLAG_V2 | ADV7180_FLAG_I2P,
  	.valid_input_mask = BIT(ADV7182_INPUT_CVBS_AIN1) |
  		BIT(ADV7182_INPUT_CVBS_AIN2) |
  		BIT(ADV7182_INPUT_CVBS_AIN7) |
  		BIT(ADV7182_INPUT_CVBS_AIN8) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN1_AIN2) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN7_AIN8) |
  		BIT(ADV7182_INPUT_DIFF_CVBS_AIN1_AIN2) |
  		BIT(ADV7182_INPUT_DIFF_CVBS_AIN7_AIN8),
  	.init = adv7182_init,
  	.set_std = adv7182_set_std,
  	.select_input = adv7182_select_input,
  };
  
  static const struct adv7180_chip_info adv7282_m_info = {
  	.flags = ADV7180_FLAG_V2 | ADV7180_FLAG_MIPI_CSI2 | ADV7180_FLAG_I2P,
  	.valid_input_mask = BIT(ADV7182_INPUT_CVBS_AIN1) |
  		BIT(ADV7182_INPUT_CVBS_AIN2) |
  		BIT(ADV7182_INPUT_CVBS_AIN3) |
  		BIT(ADV7182_INPUT_CVBS_AIN4) |
  		BIT(ADV7182_INPUT_CVBS_AIN7) |
  		BIT(ADV7182_INPUT_CVBS_AIN8) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN1_AIN2) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN3_AIN4) |
  		BIT(ADV7182_INPUT_SVIDEO_AIN7_AIN8) |
  		BIT(ADV7182_INPUT_DIFF_CVBS_AIN1_AIN2) |
  		BIT(ADV7182_INPUT_DIFF_CVBS_AIN3_AIN4) |
  		BIT(ADV7182_INPUT_DIFF_CVBS_AIN7_AIN8),
  	.init = adv7182_init,
  	.set_std = adv7182_set_std,
  	.select_input = adv7182_select_input,
  };
  
  static int init_device(struct adv7180_state *state)
  {
  	int ret;
  
  	mutex_lock(&state->mutex);
  
  	adv7180_write(state, ADV7180_REG_PWR_MAN, ADV7180_PWR_MAN_RES);
  	usleep_range(2000, 10000);
  
  	ret = state->chip_info->init(state);
  	if (ret)
  		goto out_unlock;
  
  	ret = adv7180_program_std(state);
  	if (ret)
  		goto out_unlock;
  
  	adv7180_set_field_mode(state);
  
  	/* register for interrupts */
  	if (state->irq > 0) {
  		/* config the Interrupt pin to be active low */
  		ret = adv7180_write(state, ADV7180_REG_ICONF1,
  						ADV7180_ICONF1_ACTIVE_LOW |
  						ADV7180_ICONF1_PSYNC_ONLY);
  		if (ret < 0)
  			goto out_unlock;
  
  		ret = adv7180_write(state, ADV7180_REG_IMR1, 0);
  		if (ret < 0)
  			goto out_unlock;
  
  		ret = adv7180_write(state, ADV7180_REG_IMR2, 0);
  		if (ret < 0)
  			goto out_unlock;
  
  		/* enable AD change interrupts interrupts */
  		ret = adv7180_write(state, ADV7180_REG_IMR3,
  						ADV7180_IRQ3_AD_CHANGE);
  		if (ret < 0)
  			goto out_unlock;
  
  		ret = adv7180_write(state, ADV7180_REG_IMR4, 0);
  		if (ret < 0)
  			goto out_unlock;
  	}
  
  out_unlock:
  	mutex_unlock(&state->mutex);
  
  	return ret;
  }
  
  static int adv7180_probe(struct i2c_client *client,
  			 const struct i2c_device_id *id)
  {
  	struct adv7180_state *state;
  	struct v4l2_subdev *sd;
  	int ret;
  
  	/* Check if the adapter supports the needed features */
  	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
  		return -EIO;
  
  	v4l_info(client, "chip found @ 0x%02x (%s)\n",
  		 client->addr, client->adapter->name);
  
  	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
  	if (state == NULL)
  		return -ENOMEM;
  
  	state->client = client;
  	state->field = V4L2_FIELD_INTERLACED;
  	state->chip_info = (struct adv7180_chip_info *)id->driver_data;
  
  	if (state->chip_info->flags & ADV7180_FLAG_MIPI_CSI2) {
  		state->csi_client = i2c_new_dummy(client->adapter,
  				ADV7180_DEFAULT_CSI_I2C_ADDR);
  		if (!state->csi_client)
  			return -ENOMEM;
  	}
  
  	if (state->chip_info->flags & ADV7180_FLAG_I2P) {
  		state->vpp_client = i2c_new_dummy(client->adapter,
  				ADV7180_DEFAULT_VPP_I2C_ADDR);
  		if (!state->vpp_client) {
  			ret = -ENOMEM;
  			goto err_unregister_csi_client;
  		}
  	}
  
  	state->irq = client->irq;
  	mutex_init(&state->mutex);
  	state->autodetect = true;
  	if (state->chip_info->flags & ADV7180_FLAG_RESET_POWERED)
  		state->powered = true;
  	else
  		state->powered = false;
  	state->input = 0;
  	sd = &state->sd;
  	v4l2_i2c_subdev_init(sd, client, &adv7180_ops);
  	sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
  
  	ret = adv7180_init_controls(state);
  	if (ret)
  		goto err_unregister_vpp_client;
  
  	state->pad.flags = MEDIA_PAD_FL_SOURCE;
  	sd->entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
  	ret = media_entity_init(&sd->entity, 1, &state->pad, 0);
  	if (ret)
  		goto err_free_ctrl;
  
  	ret = init_device(state);
  	if (ret)
  		goto err_media_entity_cleanup;
  
  	if (state->irq) {
  		ret = request_threaded_irq(client->irq, NULL, adv7180_irq,
  					   IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
  					   KBUILD_MODNAME, state);
  		if (ret)
  			goto err_media_entity_cleanup;
  	}
  
  	ret = v4l2_async_register_subdev(sd);
  	if (ret)
  		goto err_free_irq;
  
  	return 0;
  
  err_free_irq:
  	if (state->irq > 0)
  		free_irq(client->irq, state);
  err_media_entity_cleanup:
  	media_entity_cleanup(&sd->entity);
  err_free_ctrl:
  	adv7180_exit_controls(state);
  err_unregister_vpp_client:
  	if (state->chip_info->flags & ADV7180_FLAG_I2P)
  		i2c_unregister_device(state->vpp_client);
  err_unregister_csi_client:
  	if (state->chip_info->flags & ADV7180_FLAG_MIPI_CSI2)
  		i2c_unregister_device(state->csi_client);
  	mutex_destroy(&state->mutex);
  	return ret;
  }
  
  static int adv7180_remove(struct i2c_client *client)
  {
  	struct v4l2_subdev *sd = i2c_get_clientdata(client);
  	struct adv7180_state *state = to_state(sd);
  
  	v4l2_async_unregister_subdev(sd);
  
  	if (state->irq > 0)
  		free_irq(client->irq, state);
  
  	media_entity_cleanup(&sd->entity);
  	adv7180_exit_controls(state);
  
  	if (state->chip_info->flags & ADV7180_FLAG_I2P)
  		i2c_unregister_device(state->vpp_client);
  	if (state->chip_info->flags & ADV7180_FLAG_MIPI_CSI2)
  		i2c_unregister_device(state->csi_client);
  
  	mutex_destroy(&state->mutex);
  
  	return 0;
  }
  
  static const struct i2c_device_id adv7180_id[] = {
  	{ "adv7180", (kernel_ulong_t)&adv7180_info },
  	{ "adv7182", (kernel_ulong_t)&adv7182_info },
  	{ "adv7280", (kernel_ulong_t)&adv7280_info },
  	{ "adv7280-m", (kernel_ulong_t)&adv7280_m_info },
  	{ "adv7281", (kernel_ulong_t)&adv7281_info },
  	{ "adv7281-m", (kernel_ulong_t)&adv7281_m_info },
  	{ "adv7281-ma", (kernel_ulong_t)&adv7281_ma_info },
  	{ "adv7282", (kernel_ulong_t)&adv7282_info },
  	{ "adv7282-m", (kernel_ulong_t)&adv7282_m_info },
  	{},
  };
  MODULE_DEVICE_TABLE(i2c, adv7180_id);
  
  #ifdef CONFIG_PM_SLEEP
  static int adv7180_suspend(struct device *dev)
  {
  	struct i2c_client *client = to_i2c_client(dev);
  	struct v4l2_subdev *sd = i2c_get_clientdata(client);
  	struct adv7180_state *state = to_state(sd);
  
  	return adv7180_set_power(state, false);
  }
  
  static int adv7180_resume(struct device *dev)
  {
  	struct i2c_client *client = to_i2c_client(dev);
  	struct v4l2_subdev *sd = i2c_get_clientdata(client);
  	struct adv7180_state *state = to_state(sd);
  	int ret;
  
  	ret = init_device(state);
  	if (ret < 0)
  		return ret;
  
  	ret = adv7180_set_power(state, state->powered);
  	if (ret)
  		return ret;
  
  	return 0;
  }
  
  static SIMPLE_DEV_PM_OPS(adv7180_pm_ops, adv7180_suspend, adv7180_resume);
  #define ADV7180_PM_OPS (&adv7180_pm_ops)
  
  #else
  #define ADV7180_PM_OPS NULL
  #endif
  
  static struct i2c_driver adv7180_driver = {
  	.driver = {
  		   .owner = THIS_MODULE,
  		   .name = KBUILD_MODNAME,
  		   .pm = ADV7180_PM_OPS,
  		   },
  	.probe = adv7180_probe,
  	.remove = adv7180_remove,
  	.id_table = adv7180_id,
  };
  
  module_i2c_driver(adv7180_driver);
  
  MODULE_DESCRIPTION("Analog Devices ADV7180 video decoder driver");
  MODULE_AUTHOR("Mocean Laboratories");
  MODULE_LICENSE("GPL v2");
  