[deliverable/linux.git] / drivers / media / i2c / ml86v7667.c

/*
 * OKI Semiconductor ML86V7667 video decoder driver
 *
 * Author: Vladimir Barinov <source@cogentembedded.com>
 * 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 as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <media/v4l2-subdev.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-ctrls.h>

#define DRV_NAME "ml86v7667"

/* Subaddresses */
#define MRA_REG			0x00 /* Mode Register A */
#define MRC_REG			0x02 /* Mode Register C */
#define LUMC_REG		0x0C /* Luminance Control */
#define CLC_REG			0x10 /* Contrast level control */
#define SSEPL_REG		0x11 /* Sync separation level */
#define CHRCA_REG		0x12 /* Chrominance Control A */
#define ACCC_REG		0x14 /* ACC Loop filter & Chrominance control */
#define ACCRC_REG		0x15 /* ACC Reference level control */
#define HUE_REG			0x16 /* Hue control */
#define ADC2_REG		0x1F /* ADC Register 2 */
#define PLLR1_REG		0x20 /* PLL Register 1 */
#define STATUS_REG		0x2C /* STATUS Register */

/* Mode Register A register bits */
#define MRA_OUTPUT_MODE_MASK	(3 << 6)
#define MRA_ITUR_BT601		(1 << 6)
#define MRA_ITUR_BT656		(0 << 6)
#define MRA_INPUT_MODE_MASK	(7 << 3)
#define MRA_PAL_BT601		(4 << 3)
#define MRA_NTSC_BT601		(0 << 3)
#define MRA_REGISTER_MODE	(1 << 0)

/* Mode Register C register bits */
#define MRC_AUTOSELECT		(1 << 7)

/* Luminance Control register bits */
#define LUMC_ONOFF_SHIFT	7
#define LUMC_ONOFF_MASK		(1 << 7)

/* Contrast level control register bits */
#define CLC_CONTRAST_ONOFF	(1 << 7)
#define CLC_CONTRAST_MASK	0x0F

/* Sync separation level register bits */
#define SSEPL_LUMINANCE_ONOFF	(1 << 7)
#define SSEPL_LUMINANCE_MASK	0x7F

/* Chrominance Control A register bits */
#define CHRCA_MODE_SHIFT	6
#define CHRCA_MODE_MASK		(1 << 6)

/* ACC Loop filter & Chrominance control register bits */
#define ACCC_CHROMA_CR_SHIFT	3
#define ACCC_CHROMA_CR_MASK	(7 << 3)
#define ACCC_CHROMA_CB_SHIFT	0
#define ACCC_CHROMA_CB_MASK	(7 << 0)

/* ACC Reference level control register bits */
#define ACCRC_CHROMA_MASK	0xfc
#define ACCRC_CHROMA_SHIFT	2

/* ADC Register 2 register bits */
#define ADC2_CLAMP_VOLTAGE_MASK	(7 << 1)
#define ADC2_CLAMP_VOLTAGE(n)	((n & 7) << 1)

/* PLL Register 1 register bits */
#define PLLR1_FIXED_CLOCK	(1 << 7)

/* STATUS Register register bits */
#define STATUS_HLOCK_DETECT	(1 << 3)
#define STATUS_NTSCPAL		(1 << 2)

struct ml86v7667_priv {
	struct v4l2_subdev		sd;
	struct v4l2_ctrl_handler	hdl;
	v4l2_std_id			std;
};

static inline struct ml86v7667_priv *to_ml86v7667(struct v4l2_subdev *subdev)
{
	return container_of(subdev, struct ml86v7667_priv, sd);
}

static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
{
	return &container_of(ctrl->handler, struct ml86v7667_priv, hdl)->sd;
}

static int ml86v7667_mask_set(struct i2c_client *client, const u8 reg,
			      const u8 mask, const u8 data)
{
	int val = i2c_smbus_read_byte_data(client, reg);
	if (val < 0)
		return val;

	val = (val & ~mask) | (data & mask);
	return i2c_smbus_write_byte_data(client, reg, val);
}

static int ml86v7667_s_ctrl(struct v4l2_ctrl *ctrl)
{
	struct v4l2_subdev *sd = to_sd(ctrl);
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	int ret = -EINVAL;

	switch (ctrl->id) {
	case V4L2_CID_BRIGHTNESS:
		ret = ml86v7667_mask_set(client, SSEPL_REG,
					 SSEPL_LUMINANCE_MASK, ctrl->val);
		break;
	case V4L2_CID_CONTRAST:
		ret = ml86v7667_mask_set(client, CLC_REG,
					 CLC_CONTRAST_MASK, ctrl->val);
		break;
	case V4L2_CID_CHROMA_GAIN:
		ret = ml86v7667_mask_set(client, ACCRC_REG, ACCRC_CHROMA_MASK,
					 ctrl->val << ACCRC_CHROMA_SHIFT);
		break;
	case V4L2_CID_HUE:
		ret = ml86v7667_mask_set(client, HUE_REG, ~0, ctrl->val);
		break;
	case V4L2_CID_RED_BALANCE:
		ret = ml86v7667_mask_set(client, ACCC_REG,
					 ACCC_CHROMA_CR_MASK,
					 ctrl->val << ACCC_CHROMA_CR_SHIFT);
		break;
	case V4L2_CID_BLUE_BALANCE:
		ret = ml86v7667_mask_set(client, ACCC_REG,
					 ACCC_CHROMA_CB_MASK,
					 ctrl->val << ACCC_CHROMA_CB_SHIFT);
		break;
	case V4L2_CID_SHARPNESS:
		ret = ml86v7667_mask_set(client, LUMC_REG,
					 LUMC_ONOFF_MASK,
					 ctrl->val << LUMC_ONOFF_SHIFT);
		break;
	case V4L2_CID_COLOR_KILLER:
		ret = ml86v7667_mask_set(client, CHRCA_REG,
					 CHRCA_MODE_MASK,
					 ctrl->val << CHRCA_MODE_SHIFT);
		break;
	}

	return ret;
}

static int ml86v7667_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	int status;

	status = i2c_smbus_read_byte_data(client, STATUS_REG);
	if (status < 0)
		return status;

	if (status & STATUS_HLOCK_DETECT)
		*std &= status & STATUS_NTSCPAL ? V4L2_STD_625_50 : V4L2_STD_525_60;
	else
		*std = V4L2_STD_UNKNOWN;

	return 0;
}

static int ml86v7667_g_input_status(struct v4l2_subdev *sd, u32 *status)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	int status_reg;

	status_reg = i2c_smbus_read_byte_data(client, STATUS_REG);
	if (status_reg < 0)
		return status_reg;

	*status = status_reg & STATUS_HLOCK_DETECT ? 0 : V4L2_IN_ST_NO_SIGNAL;

	return 0;
}

static int ml86v7667_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned int index,
				   enum v4l2_mbus_pixelcode *code)
{
	if (index > 0)
		return -EINVAL;

	*code = V4L2_MBUS_FMT_YUYV8_2X8;

	return 0;
}

static int ml86v7667_mbus_fmt(struct v4l2_subdev *sd,
			      struct v4l2_mbus_framefmt *fmt)
{
	struct ml86v7667_priv *priv = to_ml86v7667(sd);

	fmt->code = V4L2_MBUS_FMT_YUYV8_2X8;
	fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
	/* The top field is always transferred first by the chip */
	fmt->field = V4L2_FIELD_INTERLACED_TB;
	fmt->width = 720;
	fmt->height = priv->std & V4L2_STD_525_60 ? 480 : 576;

	return 0;
}

static int ml86v7667_g_mbus_config(struct v4l2_subdev *sd,
				   struct v4l2_mbus_config *cfg)
{
	cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING |
		     V4L2_MBUS_DATA_ACTIVE_HIGH;
	cfg->type = V4L2_MBUS_BT656;

	return 0;
}

static int ml86v7667_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
{
	struct ml86v7667_priv *priv = to_ml86v7667(sd);
	struct i2c_client *client = v4l2_get_subdevdata(&priv->sd);
	int ret;
	u8 mode;

	/* PAL/NTSC ITU-R BT.601 input mode */
	mode = std & V4L2_STD_525_60 ? MRA_NTSC_BT601 : MRA_PAL_BT601;
	ret = ml86v7667_mask_set(client, MRA_REG, MRA_INPUT_MODE_MASK, mode);
	if (ret < 0)
		return ret;

	priv->std = std;

	return 0;
}

#ifdef CONFIG_VIDEO_ADV_DEBUG
static int ml86v7667_g_register(struct v4l2_subdev *sd,
				struct v4l2_dbg_register *reg)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	int ret;

	ret = i2c_smbus_read_byte_data(client, (u8)reg->reg);
	if (ret < 0)
		return ret;

	reg->val = ret;
	reg->size = sizeof(u8);

	return 0;
}

static int ml86v7667_s_register(struct v4l2_subdev *sd,
				const struct v4l2_dbg_register *reg)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	return i2c_smbus_write_byte_data(client, (u8)reg->reg, (u8)reg->val);
}
#endif

static const struct v4l2_ctrl_ops ml86v7667_ctrl_ops = {
	.s_ctrl = ml86v7667_s_ctrl,
};

static struct v4l2_subdev_video_ops ml86v7667_subdev_video_ops = {
	.s_std = ml86v7667_s_std,
	.querystd = ml86v7667_querystd,
	.g_input_status = ml86v7667_g_input_status,
	.enum_mbus_fmt = ml86v7667_enum_mbus_fmt,
	.try_mbus_fmt = ml86v7667_mbus_fmt,
	.g_mbus_fmt = ml86v7667_mbus_fmt,
	.s_mbus_fmt = ml86v7667_mbus_fmt,
	.g_mbus_config = ml86v7667_g_mbus_config,
};

static struct v4l2_subdev_core_ops ml86v7667_subdev_core_ops = {
#ifdef CONFIG_VIDEO_ADV_DEBUG
	.g_register = ml86v7667_g_register,
	.s_register = ml86v7667_s_register,
#endif
};

static struct v4l2_subdev_ops ml86v7667_subdev_ops = {
	.core = &ml86v7667_subdev_core_ops,
	.video = &ml86v7667_subdev_video_ops,
};

static int ml86v7667_init(struct ml86v7667_priv *priv)
{
	struct i2c_client *client = v4l2_get_subdevdata(&priv->sd);
	int val;
	int ret;

	/* BT.656-4 output mode, register mode */
	ret = ml86v7667_mask_set(client, MRA_REG,
				 MRA_OUTPUT_MODE_MASK | MRA_REGISTER_MODE,
				 MRA_ITUR_BT656 | MRA_REGISTER_MODE);

	/* PLL circuit fixed clock, 32MHz */
	ret |= ml86v7667_mask_set(client, PLLR1_REG, PLLR1_FIXED_CLOCK,
				  PLLR1_FIXED_CLOCK);

	/* ADC2 clamping voltage maximum  */
	ret |= ml86v7667_mask_set(client, ADC2_REG, ADC2_CLAMP_VOLTAGE_MASK,
				  ADC2_CLAMP_VOLTAGE(7));

	/* enable luminance function */
	ret |= ml86v7667_mask_set(client, SSEPL_REG, SSEPL_LUMINANCE_ONOFF,
				  SSEPL_LUMINANCE_ONOFF);

	/* enable contrast function */
	ret |= ml86v7667_mask_set(client, CLC_REG, CLC_CONTRAST_ONOFF, 0);

	/*
	 * PAL/NTSC autodetection is enabled after reset,
	 * set the autodetected std in manual std mode and
	 * disable autodetection
	 */
	val = i2c_smbus_read_byte_data(client, STATUS_REG);
	if (val < 0)
		return val;

	priv->std = val & STATUS_NTSCPAL ? V4L2_STD_625_50 : V4L2_STD_525_60;
	ret |= ml86v7667_mask_set(client, MRC_REG, MRC_AUTOSELECT, 0);

	val = priv->std & V4L2_STD_525_60 ? MRA_NTSC_BT601 : MRA_PAL_BT601;
	ret |= ml86v7667_mask_set(client, MRA_REG, MRA_INPUT_MODE_MASK, val);

	return ret;
}

static int ml86v7667_probe(struct i2c_client *client,
			   const struct i2c_device_id *did)
{
	struct ml86v7667_priv *priv;
	int ret;

	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
		return -EIO;

	priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	v4l2_i2c_subdev_init(&priv->sd, client, &ml86v7667_subdev_ops);

	v4l2_ctrl_handler_init(&priv->hdl, 8);
	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
			  V4L2_CID_BRIGHTNESS, -64, 63, 1, 0);
	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
			  V4L2_CID_CONTRAST, -8, 7, 1, 0);
	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
			  V4L2_CID_CHROMA_GAIN, -32, 31, 1, 0);
	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
			  V4L2_CID_HUE, -128, 127, 1, 0);
	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
			  V4L2_CID_RED_BALANCE, -4, 3, 1, 0);
	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
			  V4L2_CID_BLUE_BALANCE, -4, 3, 1, 0);
	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
			  V4L2_CID_SHARPNESS, 0, 1, 1, 0);
	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
			  V4L2_CID_COLOR_KILLER, 0, 1, 1, 0);
	priv->sd.ctrl_handler = &priv->hdl;

	ret = priv->hdl.error;
	if (ret)
		goto cleanup;

	v4l2_ctrl_handler_setup(&priv->hdl);

	ret = ml86v7667_init(priv);
	if (ret)
		goto cleanup;

	v4l_info(client, "chip found @ 0x%02x (%s)\n",
		 client->addr, client->adapter->name);
	return 0;

cleanup:
	v4l2_ctrl_handler_free(&priv->hdl);
	v4l2_device_unregister_subdev(&priv->sd);
	v4l_err(client, "failed to probe @ 0x%02x (%s)\n",
		client->addr, client->adapter->name);
	return ret;
}

static int ml86v7667_remove(struct i2c_client *client)
{
	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	struct ml86v7667_priv *priv = to_ml86v7667(sd);

	v4l2_ctrl_handler_free(&priv->hdl);
	v4l2_device_unregister_subdev(&priv->sd);

	return 0;
}

static const struct i2c_device_id ml86v7667_id[] = {
	{DRV_NAME, 0},
	{},
};
MODULE_DEVICE_TABLE(i2c, ml86v7667_id);

static struct i2c_driver ml86v7667_i2c_driver = {
	.driver = {
		.name	= DRV_NAME,
		.owner	= THIS_MODULE,
	},
	.probe		= ml86v7667_probe,
	.remove		= ml86v7667_remove,
	.id_table	= ml86v7667_id,
};

module_i2c_driver(ml86v7667_i2c_driver);

MODULE_DESCRIPTION("OKI Semiconductor ML86V7667 video decoder driver");
MODULE_AUTHOR("Vladimir Barinov");
MODULE_LICENSE("GPL");
Commit	Line	Data
ed3e12d2 VB	1	/*
	2	* OKI Semiconductor ML86V7667 video decoder driver
	3	*
	4	* Author: Vladimir Barinov <source@cogentembedded.com>
	5	* Copyright (C) 2013 Cogent Embedded, Inc.
	6	* Copyright (C) 2013 Renesas Solutions Corp.
	7	*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License as published by the
	10	* Free Software Foundation; either version 2 of the License, or (at your
	11	* option) any later version.
	12	*/
	13
	14	#include <linux/init.h>
	15	#include <linux/module.h>
	16	#include <linux/i2c.h>
	17	#include <linux/slab.h>
	18	#include <linux/videodev2.h>
	19	#include <media/v4l2-subdev.h>
	20	#include <media/v4l2-device.h>
	21	#include <media/v4l2-ioctl.h>
	22	#include <media/v4l2-ctrls.h>
	23
	24	#define DRV_NAME "ml86v7667"
	25
	26	/* Subaddresses */
	27	#define MRA_REG 0x00 /* Mode Register A */
	28	#define MRC_REG 0x02 /* Mode Register C */
	29	#define LUMC_REG 0x0C /* Luminance Control */
	30	#define CLC_REG 0x10 /* Contrast level control */
	31	#define SSEPL_REG 0x11 /* Sync separation level */
	32	#define CHRCA_REG 0x12 /* Chrominance Control A */
	33	#define ACCC_REG 0x14 /* ACC Loop filter & Chrominance control */
	34	#define ACCRC_REG 0x15 /* ACC Reference level control */
	35	#define HUE_REG 0x16 /* Hue control */
	36	#define ADC2_REG 0x1F /* ADC Register 2 */
	37	#define PLLR1_REG 0x20 /* PLL Register 1 */
	38	#define STATUS_REG 0x2C /* STATUS Register */
	39
	40	/* Mode Register A register bits */
	41	#define MRA_OUTPUT_MODE_MASK (3 << 6)
	42	#define MRA_ITUR_BT601 (1 << 6)
	43	#define MRA_ITUR_BT656 (0 << 6)
	44	#define MRA_INPUT_MODE_MASK (7 << 3)
	45	#define MRA_PAL_BT601 (4 << 3)
	46	#define MRA_NTSC_BT601 (0 << 3)
	47	#define MRA_REGISTER_MODE (1 << 0)
	48
	49	/* Mode Register C register bits */
	50	#define MRC_AUTOSELECT (1 << 7)
	51
	52	/* Luminance Control register bits */
	53	#define LUMC_ONOFF_SHIFT 7
	54	#define LUMC_ONOFF_MASK (1 << 7)
	55
	56	/* Contrast level control register bits */
	57	#define CLC_CONTRAST_ONOFF (1 << 7)
	58	#define CLC_CONTRAST_MASK 0x0F
	59
	60	/* Sync separation level register bits */
	61	#define SSEPL_LUMINANCE_ONOFF (1 << 7)
	62	#define SSEPL_LUMINANCE_MASK 0x7F
	63
	64	/* Chrominance Control A register bits */
65	#define CHRCA_MODE_SHIFT 6
66	#define CHRCA_MODE_MASK (1 << 6)
67
68	/* ACC Loop filter & Chrominance control register bits */
69	#define ACCC_CHROMA_CR_SHIFT 3
70	#define ACCC_CHROMA_CR_MASK (7 << 3)
71	#define ACCC_CHROMA_CB_SHIFT 0
72	#define ACCC_CHROMA_CB_MASK (7 << 0)
73
74	/* ACC Reference level control register bits */
75	#define ACCRC_CHROMA_MASK 0xfc
76	#define ACCRC_CHROMA_SHIFT 2
77
78	/* ADC Register 2 register bits */
79	#define ADC2_CLAMP_VOLTAGE_MASK (7 << 1)
80	#define ADC2_CLAMP_VOLTAGE(n) ((n & 7) << 1)
81
82	/* PLL Register 1 register bits */
83	#define PLLR1_FIXED_CLOCK (1 << 7)
84
85	/* STATUS Register register bits */
86	#define STATUS_HLOCK_DETECT (1 << 3)
87	#define STATUS_NTSCPAL (1 << 2)
88
89	struct ml86v7667_priv {
90	struct v4l2_subdev sd;
91	struct v4l2_ctrl_handler hdl;
92	v4l2_std_id std;
93	};
94
95	static inline struct ml86v7667_priv to_ml86v7667(struct v4l2_subdev subdev)
96	{
97	return container_of(subdev, struct ml86v7667_priv, sd);
98	}
99
100	static inline struct v4l2_subdev to_sd(struct v4l2_ctrl ctrl)
101	{
102	return &container_of(ctrl->handler, struct ml86v7667_priv, hdl)->sd;
103	}
104
105	static int ml86v7667_mask_set(struct i2c_client *client, const u8 reg,
106	const u8 mask, const u8 data)
107	{
108	int val = i2c_smbus_read_byte_data(client, reg);
109	if (val < 0)
110	return val;
111
112	val = (val & ~mask) \| (data & mask);
113	return i2c_smbus_write_byte_data(client, reg, val);
114	}
115
116	static int ml86v7667_s_ctrl(struct v4l2_ctrl *ctrl)
117	{
118	struct v4l2_subdev *sd = to_sd(ctrl);
119	struct i2c_client *client = v4l2_get_subdevdata(sd);
037f4e6b	120	int ret = -EINVAL;
ed3e12d2 VB	121
	122	switch (ctrl->id) {
	123	case V4L2_CID_BRIGHTNESS:
	124	ret = ml86v7667_mask_set(client, SSEPL_REG,
	125	SSEPL_LUMINANCE_MASK, ctrl->val);
	126	break;
	127	case V4L2_CID_CONTRAST:
	128	ret = ml86v7667_mask_set(client, CLC_REG,
	129	CLC_CONTRAST_MASK, ctrl->val);
	130	break;
	131	case V4L2_CID_CHROMA_GAIN:
	132	ret = ml86v7667_mask_set(client, ACCRC_REG, ACCRC_CHROMA_MASK,
	133	ctrl->val << ACCRC_CHROMA_SHIFT);
	134	break;
	135	case V4L2_CID_HUE:
	136	ret = ml86v7667_mask_set(client, HUE_REG, ~0, ctrl->val);
	137	break;
	138	case V4L2_CID_RED_BALANCE:
	139	ret = ml86v7667_mask_set(client, ACCC_REG,
	140	ACCC_CHROMA_CR_MASK,
	141	ctrl->val << ACCC_CHROMA_CR_SHIFT);
	142	break;
	143	case V4L2_CID_BLUE_BALANCE:
	144	ret = ml86v7667_mask_set(client, ACCC_REG,
	145	ACCC_CHROMA_CB_MASK,
	146	ctrl->val << ACCC_CHROMA_CB_SHIFT);
	147	break;
	148	case V4L2_CID_SHARPNESS:
	149	ret = ml86v7667_mask_set(client, LUMC_REG,
	150	LUMC_ONOFF_MASK,
	151	ctrl->val << LUMC_ONOFF_SHIFT);
	152	break;
	153	case V4L2_CID_COLOR_KILLER:
	154	ret = ml86v7667_mask_set(client, CHRCA_REG,
	155	CHRCA_MODE_MASK,
	156	ctrl->val << CHRCA_MODE_SHIFT);
	157	break;
	158	}
	159
037f4e6b	160	return ret;
ed3e12d2 VB	161	}
	162
	163	static int ml86v7667_querystd(struct v4l2_subdev sd, v4l2_std_id std)
	164	{
	165	struct i2c_client *client = v4l2_get_subdevdata(sd);
	166	int status;
	167
	168	status = i2c_smbus_read_byte_data(client, STATUS_REG);
	169	if (status < 0)
	170	return status;
	171
d13ac96f HV	172	if (status & STATUS_HLOCK_DETECT)
	173	*std &= status & STATUS_NTSCPAL ? V4L2_STD_625_50 : V4L2_STD_525_60;
	174	else
	175	*std = V4L2_STD_UNKNOWN;
ed3e12d2 VB	176
	177	return 0;
	178	}
	179
	180	static int ml86v7667_g_input_status(struct v4l2_subdev sd, u32 status)
	181	{
	182	struct i2c_client *client = v4l2_get_subdevdata(sd);
	183	int status_reg;
	184
	185	status_reg = i2c_smbus_read_byte_data(client, STATUS_REG);
	186	if (status_reg < 0)
	187	return status_reg;
	188
	189	*status = status_reg & STATUS_HLOCK_DETECT ? 0 : V4L2_IN_ST_NO_SIGNAL;
	190
	191	return 0;
	192	}
	193
	194	static int ml86v7667_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned int index,
	195	enum v4l2_mbus_pixelcode *code)
	196	{
	197	if (index > 0)
	198	return -EINVAL;
	199
	200	*code = V4L2_MBUS_FMT_YUYV8_2X8;
	201
	202	return 0;
	203	}
	204
	205	static int ml86v7667_mbus_fmt(struct v4l2_subdev *sd,
	206	struct v4l2_mbus_framefmt *fmt)
	207	{
	208	struct ml86v7667_priv *priv = to_ml86v7667(sd);
	209
	210	fmt->code = V4L2_MBUS_FMT_YUYV8_2X8;
	211	fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
2fa8de19 VB	212	/* The top field is always transferred first by the chip */
2fa8de19 VB	213	fmt->field = V4L2_FIELD_INTERLACED_TB;
ed3e12d2 VB	214	fmt->width = 720;
	215	fmt->height = priv->std & V4L2_STD_525_60 ? 480 : 576;
	216
	217	return 0;
	218	}
	219
	220	static int ml86v7667_g_mbus_config(struct v4l2_subdev *sd,
	221	struct v4l2_mbus_config *cfg)
	222	{
	223	cfg->flags = V4L2_MBUS_MASTER \| V4L2_MBUS_PCLK_SAMPLE_RISING \|
	224	V4L2_MBUS_DATA_ACTIVE_HIGH;
	225	cfg->type = V4L2_MBUS_BT656;
	226
	227	return 0;
	228	}
	229
	230	static int ml86v7667_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
	231	{
	232	struct ml86v7667_priv *priv = to_ml86v7667(sd);
	233	struct i2c_client *client = v4l2_get_subdevdata(&priv->sd);
	234	int ret;
	235	u8 mode;
	236
	237	/* PAL/NTSC ITU-R BT.601 input mode */
	238	mode = std & V4L2_STD_525_60 ? MRA_NTSC_BT601 : MRA_PAL_BT601;
	239	ret = ml86v7667_mask_set(client, MRA_REG, MRA_INPUT_MODE_MASK, mode);
	240	if (ret < 0)
	241	return ret;
	242
	243	priv->std = std;
	244
	245	return 0;
	246	}
	247
	248	#ifdef CONFIG_VIDEO_ADV_DEBUG
	249	static int ml86v7667_g_register(struct v4l2_subdev *sd,
	250	struct v4l2_dbg_register *reg)
	251	{
	252	struct i2c_client *client = v4l2_get_subdevdata(sd);
	253	int ret;
	254
	255	ret = i2c_smbus_read_byte_data(client, (u8)reg->reg);
	256	if (ret < 0)
	257	return ret;
	258
	259	reg->val = ret;
	260	reg->size = sizeof(u8);
	261
	262	return 0;
	263	}
	264
	265	static int ml86v7667_s_register(struct v4l2_subdev *sd,
	266	const struct v4l2_dbg_register *reg)
	267	{
	268	struct i2c_client *client = v4l2_get_subdevdata(sd);
	269
	270	return i2c_smbus_write_byte_data(client, (u8)reg->reg, (u8)reg->val);
	271	}
	272	#endif
	273
	274	static const struct v4l2_ctrl_ops ml86v7667_ctrl_ops = {
	275	.s_ctrl = ml86v7667_s_ctrl,
	276	};
	277
278	static struct v4l2_subdev_video_ops ml86v7667_subdev_video_ops = {
8774bed9	279	.s_std = ml86v7667_s_std,
ed3e12d2 VB	280	.querystd = ml86v7667_querystd,
	281	.g_input_status = ml86v7667_g_input_status,
	282	.enum_mbus_fmt = ml86v7667_enum_mbus_fmt,
	283	.try_mbus_fmt = ml86v7667_mbus_fmt,
	284	.g_mbus_fmt = ml86v7667_mbus_fmt,
	285	.s_mbus_fmt = ml86v7667_mbus_fmt,
	286	.g_mbus_config = ml86v7667_g_mbus_config,
	287	};
	288
	289	static struct v4l2_subdev_core_ops ml86v7667_subdev_core_ops = {
ed3e12d2 VB	290	#ifdef CONFIG_VIDEO_ADV_DEBUG
	291	.g_register = ml86v7667_g_register,
	292	.s_register = ml86v7667_s_register,
	293	#endif
	294	};
	295
	296	static struct v4l2_subdev_ops ml86v7667_subdev_ops = {
	297	.core = &ml86v7667_subdev_core_ops,
	298	.video = &ml86v7667_subdev_video_ops,
	299	};
	300
	301	static int ml86v7667_init(struct ml86v7667_priv *priv)
	302	{
	303	struct i2c_client *client = v4l2_get_subdevdata(&priv->sd);
	304	int val;
	305	int ret;
	306
	307	/* BT.656-4 output mode, register mode */
	308	ret = ml86v7667_mask_set(client, MRA_REG,
	309	MRA_OUTPUT_MODE_MASK \| MRA_REGISTER_MODE,
	310	MRA_ITUR_BT656 \| MRA_REGISTER_MODE);
	311
	312	/* PLL circuit fixed clock, 32MHz */
	313	ret \|= ml86v7667_mask_set(client, PLLR1_REG, PLLR1_FIXED_CLOCK,
	314	PLLR1_FIXED_CLOCK);
	315
	316	/* ADC2 clamping voltage maximum */
	317	ret \|= ml86v7667_mask_set(client, ADC2_REG, ADC2_CLAMP_VOLTAGE_MASK,
	318	ADC2_CLAMP_VOLTAGE(7));
	319
	320	/* enable luminance function */
	321	ret \|= ml86v7667_mask_set(client, SSEPL_REG, SSEPL_LUMINANCE_ONOFF,
	322	SSEPL_LUMINANCE_ONOFF);
	323
	324	/* enable contrast function */
	325	ret \|= ml86v7667_mask_set(client, CLC_REG, CLC_CONTRAST_ONOFF, 0);
	326
	327	/*
	328	* PAL/NTSC autodetection is enabled after reset,
	329	* set the autodetected std in manual std mode and
	330	* disable autodetection
	331	*/
	332	val = i2c_smbus_read_byte_data(client, STATUS_REG);
	333	if (val < 0)
	334	return val;
	335
	336	priv->std = val & STATUS_NTSCPAL ? V4L2_STD_625_50 : V4L2_STD_525_60;
	337	ret \|= ml86v7667_mask_set(client, MRC_REG, MRC_AUTOSELECT, 0);
	338
	339	val = priv->std & V4L2_STD_525_60 ? MRA_NTSC_BT601 : MRA_PAL_BT601;
	340	ret \|= ml86v7667_mask_set(client, MRA_REG, MRA_INPUT_MODE_MASK, val);
	341
	342	return ret;
	343	}
	344
	345	static int ml86v7667_probe(struct i2c_client *client,
	346	const struct i2c_device_id *did)
	347	{
	348	struct ml86v7667_priv *priv;
	349	int ret;
	350
	351	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
	352	return -EIO;
	353
354	priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
355	if (!priv)
356	return -ENOMEM;
357
358	v4l2_i2c_subdev_init(&priv->sd, client, &ml86v7667_subdev_ops);
359
360	v4l2_ctrl_handler_init(&priv->hdl, 8);
361	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
362	V4L2_CID_BRIGHTNESS, -64, 63, 1, 0);
363	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
364	V4L2_CID_CONTRAST, -8, 7, 1, 0);
365	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
366	V4L2_CID_CHROMA_GAIN, -32, 31, 1, 0);
367	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
368	V4L2_CID_HUE, -128, 127, 1, 0);
369	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
370	V4L2_CID_RED_BALANCE, -4, 3, 1, 0);
371	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
372	V4L2_CID_BLUE_BALANCE, -4, 3, 1, 0);
373	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
374	V4L2_CID_SHARPNESS, 0, 1, 1, 0);
375	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
376	V4L2_CID_COLOR_KILLER, 0, 1, 1, 0);
377	priv->sd.ctrl_handler = &priv->hdl;
378
379	ret = priv->hdl.error;
380	if (ret)
381	goto cleanup;
382
383	v4l2_ctrl_handler_setup(&priv->hdl);
384
385	ret = ml86v7667_init(priv);
386	if (ret)
387	goto cleanup;
388
389	v4l_info(client, "chip found @ 0x%02x (%s)\n",
390	client->addr, client->adapter->name);
391	return 0;
392
393	cleanup:
394	v4l2_ctrl_handler_free(&priv->hdl);
395	v4l2_device_unregister_subdev(&priv->sd);
396	v4l_err(client, "failed to probe @ 0x%02x (%s)\n",
397	client->addr, client->adapter->name);
398	return ret;
399	}
400
401	static int ml86v7667_remove(struct i2c_client *client)
402	{
403	struct v4l2_subdev *sd = i2c_get_clientdata(client);
404	struct ml86v7667_priv *priv = to_ml86v7667(sd);
405
406	v4l2_ctrl_handler_free(&priv->hdl);
407	v4l2_device_unregister_subdev(&priv->sd);
408
409	return 0;
410	}
411
412	static const struct i2c_device_id ml86v7667_id[] = {
413	{DRV_NAME, 0},
414	{},
415	};
416	MODULE_DEVICE_TABLE(i2c, ml86v7667_id);
417
418	static struct i2c_driver ml86v7667_i2c_driver = {
419	.driver = {
420	.name = DRV_NAME,
421	.owner = THIS_MODULE,
422	},
423	.probe = ml86v7667_probe,
424	.remove = ml86v7667_remove,
425	.id_table = ml86v7667_id,
426	};
427
428	module_i2c_driver(ml86v7667_i2c_driver);
429
430	MODULE_DESCRIPTION("OKI Semiconductor ML86V7667 video decoder driver");
431	MODULE_AUTHOR("Vladimir Barinov");
432	MODULE_LICENSE("GPL");