[deliverable/linux.git] / drivers / media / i2c / soc_camera / imx074.c

/*
 * Driver for IMX074 CMOS Image Sensor from Sony
 *
 * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
 *
 * Partially inspired by the IMX074 driver from the Android / MSM tree
 *
 * 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.
 */

#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/v4l2-mediabus.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <linux/module.h>

#include <media/soc_camera.h>
#include <media/v4l2-async.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-subdev.h>

/* IMX074 registers */

#define MODE_SELECT			0x0100
#define IMAGE_ORIENTATION		0x0101
#define GROUPED_PARAMETER_HOLD		0x0104

/* Integration Time */
#define COARSE_INTEGRATION_TIME_HI	0x0202
#define COARSE_INTEGRATION_TIME_LO	0x0203
/* Gain */
#define ANALOGUE_GAIN_CODE_GLOBAL_HI	0x0204
#define ANALOGUE_GAIN_CODE_GLOBAL_LO	0x0205

/* PLL registers */
#define PRE_PLL_CLK_DIV			0x0305
#define PLL_MULTIPLIER			0x0307
#define PLSTATIM			0x302b
#define VNDMY_ABLMGSHLMT		0x300a
#define Y_OPBADDR_START_DI		0x3014
/* mode setting */
#define FRAME_LENGTH_LINES_HI		0x0340
#define FRAME_LENGTH_LINES_LO		0x0341
#define LINE_LENGTH_PCK_HI		0x0342
#define LINE_LENGTH_PCK_LO		0x0343
#define YADDR_START			0x0347
#define YADDR_END			0x034b
#define X_OUTPUT_SIZE_MSB		0x034c
#define X_OUTPUT_SIZE_LSB		0x034d
#define Y_OUTPUT_SIZE_MSB		0x034e
#define Y_OUTPUT_SIZE_LSB		0x034f
#define X_EVEN_INC			0x0381
#define X_ODD_INC			0x0383
#define Y_EVEN_INC			0x0385
#define Y_ODD_INC			0x0387

#define HMODEADD			0x3001
#define VMODEADD			0x3016
#define VAPPLINE_START			0x3069
#define VAPPLINE_END			0x306b
#define SHUTTER				0x3086
#define HADDAVE				0x30e8
#define LANESEL				0x3301

/* IMX074 supported geometry */
#define IMX074_WIDTH			1052
#define IMX074_HEIGHT			780

/* IMX074 has only one fixed colorspace per pixelcode */
struct imx074_datafmt {
	u32	code;
	enum v4l2_colorspace		colorspace;
};

struct imx074 {
	struct v4l2_subdev		subdev;
	const struct imx074_datafmt	*fmt;
	struct v4l2_clk			*clk;
};

static const struct imx074_datafmt imx074_colour_fmts[] = {
	{MEDIA_BUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
};

static struct imx074 *to_imx074(const struct i2c_client *client)
{
	return container_of(i2c_get_clientdata(client), struct imx074, subdev);
}

/* Find a data format by a pixel code in an array */
static const struct imx074_datafmt *imx074_find_datafmt(u32 code)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(imx074_colour_fmts); i++)
		if (imx074_colour_fmts[i].code == code)
			return imx074_colour_fmts + i;

	return NULL;
}

static int reg_write(struct i2c_client *client, const u16 addr, const u8 data)
{
	struct i2c_adapter *adap = client->adapter;
	struct i2c_msg msg;
	unsigned char tx[3];
	int ret;

	msg.addr = client->addr;
	msg.buf = tx;
	msg.len = 3;
	msg.flags = 0;

	tx[0] = addr >> 8;
	tx[1] = addr & 0xff;
	tx[2] = data;

	ret = i2c_transfer(adap, &msg, 1);

	mdelay(2);

	return ret == 1 ? 0 : -EIO;
}

static int reg_read(struct i2c_client *client, const u16 addr)
{
	u8 buf[2] = {addr >> 8, addr & 0xff};
	int ret;
	struct i2c_msg msgs[] = {
		{
			.addr  = client->addr,
			.flags = 0,
			.len   = 2,
			.buf   = buf,
		}, {
			.addr  = client->addr,
			.flags = I2C_M_RD,
			.len   = 2,
			.buf   = buf,
		},
	};

	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
	if (ret < 0) {
		dev_warn(&client->dev, "Reading register %x from %x failed\n",
			 addr, client->addr);
		return ret;
	}

	return buf[0] & 0xff; /* no sign-extension */
}

static int imx074_set_fmt(struct v4l2_subdev *sd,
		struct v4l2_subdev_pad_config *cfg,
		struct v4l2_subdev_format *format)
{
	struct v4l2_mbus_framefmt *mf = &format->format;
	const struct imx074_datafmt *fmt = imx074_find_datafmt(mf->code);
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	struct imx074 *priv = to_imx074(client);

	if (format->pad)
		return -EINVAL;

	dev_dbg(sd->v4l2_dev->dev, "%s(%u)\n", __func__, mf->code);

	if (!fmt) {
		/* MIPI CSI could have changed the format, double-check */
		if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
			return -EINVAL;
		mf->code	= imx074_colour_fmts[0].code;
		mf->colorspace	= imx074_colour_fmts[0].colorspace;
	}

	mf->width	= IMX074_WIDTH;
	mf->height	= IMX074_HEIGHT;
	mf->field	= V4L2_FIELD_NONE;

	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
		priv->fmt = imx074_find_datafmt(mf->code);
	else
		cfg->try_fmt = *mf;

	return 0;
}

static int imx074_get_fmt(struct v4l2_subdev *sd,
		struct v4l2_subdev_pad_config *cfg,
		struct v4l2_subdev_format *format)
{
	struct v4l2_mbus_framefmt *mf = &format->format;
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	struct imx074 *priv = to_imx074(client);

	const struct imx074_datafmt *fmt = priv->fmt;

	if (format->pad)
		return -EINVAL;

	mf->code	= fmt->code;
	mf->colorspace	= fmt->colorspace;
	mf->width	= IMX074_WIDTH;
	mf->height	= IMX074_HEIGHT;
	mf->field	= V4L2_FIELD_NONE;

	return 0;
}

static int imx074_get_selection(struct v4l2_subdev *sd,
				struct v4l2_subdev_pad_config *cfg,
				struct v4l2_subdev_selection *sel)
{
	if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
		return -EINVAL;

	sel->r.left = 0;
	sel->r.top = 0;
	sel->r.width = IMX074_WIDTH;
	sel->r.height = IMX074_HEIGHT;

	switch (sel->target) {
	case V4L2_SEL_TGT_CROP_BOUNDS:
	case V4L2_SEL_TGT_CROP_DEFAULT:
	case V4L2_SEL_TGT_CROP:
		return 0;
	default:
		return -EINVAL;
	}
}

static int imx074_enum_mbus_code(struct v4l2_subdev *sd,
		struct v4l2_subdev_pad_config *cfg,
		struct v4l2_subdev_mbus_code_enum *code)
{
	if (code->pad ||
	    (unsigned int)code->index >= ARRAY_SIZE(imx074_colour_fmts))
		return -EINVAL;

	code->code = imx074_colour_fmts[code->index].code;
	return 0;
}

static int imx074_s_stream(struct v4l2_subdev *sd, int enable)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	/* MODE_SELECT: stream or standby */
	return reg_write(client, MODE_SELECT, !!enable);
}

static int imx074_s_power(struct v4l2_subdev *sd, int on)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
	struct imx074 *priv = to_imx074(client);

	return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
}

static int imx074_g_mbus_config(struct v4l2_subdev *sd,
				struct v4l2_mbus_config *cfg)
{
	cfg->type = V4L2_MBUS_CSI2;
	cfg->flags = V4L2_MBUS_CSI2_2_LANE |
		V4L2_MBUS_CSI2_CHANNEL_0 |
		V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;

	return 0;
}

static struct v4l2_subdev_video_ops imx074_subdev_video_ops = {
	.s_stream	= imx074_s_stream,
	.g_mbus_config	= imx074_g_mbus_config,
};

static struct v4l2_subdev_core_ops imx074_subdev_core_ops = {
	.s_power	= imx074_s_power,
};

static const struct v4l2_subdev_pad_ops imx074_subdev_pad_ops = {
	.enum_mbus_code = imx074_enum_mbus_code,
	.get_selection	= imx074_get_selection,
	.get_fmt	= imx074_get_fmt,
	.set_fmt	= imx074_set_fmt,
};

static struct v4l2_subdev_ops imx074_subdev_ops = {
	.core	= &imx074_subdev_core_ops,
	.video	= &imx074_subdev_video_ops,
	.pad	= &imx074_subdev_pad_ops,
};

static int imx074_video_probe(struct i2c_client *client)
{
	struct v4l2_subdev *subdev = i2c_get_clientdata(client);
	int ret;
	u16 id;

	ret = imx074_s_power(subdev, 1);
	if (ret < 0)
		return ret;

	/* Read sensor Model ID */
	ret = reg_read(client, 0);
	if (ret < 0)
		goto done;

	id = ret << 8;

	ret = reg_read(client, 1);
	if (ret < 0)
		goto done;

	id |= ret;

	dev_info(&client->dev, "Chip ID 0x%04x detected\n", id);

	if (id != 0x74) {
		ret = -ENODEV;
		goto done;
	}

	/* PLL Setting EXTCLK=24MHz, 22.5times */
	reg_write(client, PLL_MULTIPLIER, 0x2D);
	reg_write(client, PRE_PLL_CLK_DIV, 0x02);
	reg_write(client, PLSTATIM, 0x4B);

	/* 2-lane mode */
	reg_write(client, 0x3024, 0x00);

	reg_write(client, IMAGE_ORIENTATION, 0x00);

	/* select RAW mode:
	 * 0x08+0x08 = top 8 bits
	 * 0x0a+0x08 = compressed 8-bits
	 * 0x0a+0x0a = 10 bits
	 */
	reg_write(client, 0x0112, 0x08);
	reg_write(client, 0x0113, 0x08);

	/* Base setting for High frame mode */
	reg_write(client, VNDMY_ABLMGSHLMT, 0x80);
	reg_write(client, Y_OPBADDR_START_DI, 0x08);
	reg_write(client, 0x3015, 0x37);
	reg_write(client, 0x301C, 0x01);
	reg_write(client, 0x302C, 0x05);
	reg_write(client, 0x3031, 0x26);
	reg_write(client, 0x3041, 0x60);
	reg_write(client, 0x3051, 0x24);
	reg_write(client, 0x3053, 0x34);
	reg_write(client, 0x3057, 0xC0);
	reg_write(client, 0x305C, 0x09);
	reg_write(client, 0x305D, 0x07);
	reg_write(client, 0x3060, 0x30);
	reg_write(client, 0x3065, 0x00);
	reg_write(client, 0x30AA, 0x08);
	reg_write(client, 0x30AB, 0x1C);
	reg_write(client, 0x30B0, 0x32);
	reg_write(client, 0x30B2, 0x83);
	reg_write(client, 0x30D3, 0x04);
	reg_write(client, 0x3106, 0x78);
	reg_write(client, 0x310C, 0x82);
	reg_write(client, 0x3304, 0x05);
	reg_write(client, 0x3305, 0x04);
	reg_write(client, 0x3306, 0x11);
	reg_write(client, 0x3307, 0x02);
	reg_write(client, 0x3308, 0x0C);
	reg_write(client, 0x3309, 0x06);
	reg_write(client, 0x330A, 0x08);
	reg_write(client, 0x330B, 0x04);
	reg_write(client, 0x330C, 0x08);
	reg_write(client, 0x330D, 0x06);
	reg_write(client, 0x330E, 0x01);
	reg_write(client, 0x3381, 0x00);

	/* V : 1/2V-addition (1,3), H : 1/2H-averaging (1,3) -> Full HD */
	/* 1608 = 1560 + 48 (black lines) */
	reg_write(client, FRAME_LENGTH_LINES_HI, 0x06);
	reg_write(client, FRAME_LENGTH_LINES_LO, 0x48);
	reg_write(client, YADDR_START, 0x00);
	reg_write(client, YADDR_END, 0x2F);
	/* 0x838 == 2104 */
	reg_write(client, X_OUTPUT_SIZE_MSB, 0x08);
	reg_write(client, X_OUTPUT_SIZE_LSB, 0x38);
	/* 0x618 == 1560 */
	reg_write(client, Y_OUTPUT_SIZE_MSB, 0x06);
	reg_write(client, Y_OUTPUT_SIZE_LSB, 0x18);
	reg_write(client, X_EVEN_INC, 0x01);
	reg_write(client, X_ODD_INC, 0x03);
	reg_write(client, Y_EVEN_INC, 0x01);
	reg_write(client, Y_ODD_INC, 0x03);
	reg_write(client, HMODEADD, 0x00);
	reg_write(client, VMODEADD, 0x16);
	reg_write(client, VAPPLINE_START, 0x24);
	reg_write(client, VAPPLINE_END, 0x53);
	reg_write(client, SHUTTER, 0x00);
	reg_write(client, HADDAVE, 0x80);

	reg_write(client, LANESEL, 0x00);

	reg_write(client, GROUPED_PARAMETER_HOLD, 0x00);	/* off */

	ret = 0;

done:
	imx074_s_power(subdev, 0);
	return ret;
}

static int imx074_probe(struct i2c_client *client,
			const struct i2c_device_id *did)
{
	struct imx074 *priv;
	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
	int ret;

	if (!ssdd) {
		dev_err(&client->dev, "IMX074: missing platform data!\n");
		return -EINVAL;
	}

	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
		dev_warn(&adapter->dev,
			 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n");
		return -EIO;
	}

	priv = devm_kzalloc(&client->dev, sizeof(struct imx074), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	v4l2_i2c_subdev_init(&priv->subdev, client, &imx074_subdev_ops);

	priv->fmt	= &imx074_colour_fmts[0];

	priv->clk = v4l2_clk_get(&client->dev, "mclk");
	if (IS_ERR(priv->clk)) {
		dev_info(&client->dev, "Error %ld getting clock\n", PTR_ERR(priv->clk));
		return -EPROBE_DEFER;
	}

	ret = soc_camera_power_init(&client->dev, ssdd);
	if (ret < 0)
		goto epwrinit;

	ret = imx074_video_probe(client);
	if (ret < 0)
		goto eprobe;

	ret = v4l2_async_register_subdev(&priv->subdev);
	if (!ret)
		return 0;

epwrinit:
eprobe:
	v4l2_clk_put(priv->clk);
	return ret;
}

static int imx074_remove(struct i2c_client *client)
{
	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
	struct imx074 *priv = to_imx074(client);

	v4l2_async_unregister_subdev(&priv->subdev);
	v4l2_clk_put(priv->clk);

	if (ssdd->free_bus)
		ssdd->free_bus(ssdd);

	return 0;
}

static const struct i2c_device_id imx074_id[] = {
	{ "imx074", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, imx074_id);

static struct i2c_driver imx074_i2c_driver = {
	.driver = {
		.name = "imx074",
	},
	.probe		= imx074_probe,
	.remove		= imx074_remove,
	.id_table	= imx074_id,
};

module_i2c_driver(imx074_i2c_driver);

MODULE_DESCRIPTION("Sony IMX074 Camera driver");
MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
67826235 GL	1	/*
	2	* Driver for IMX074 CMOS Image Sensor from Sony
	3	*
	4	* Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
	5	*
	6	* Partially inspired by the IMX074 driver from the Android / MSM tree
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*/
	12
	13	#include <linux/delay.h>
	14	#include <linux/i2c.h>
95d20109	15	#include <linux/v4l2-mediabus.h>
67826235 GL	16	#include <linux/slab.h>
67826235 GL	17	#include <linux/videodev2.h>
7a707b89	18	#include <linux/module.h>
67826235 GL	19
67826235 GL	20	#include <media/soc_camera.h>
ee17608d	21	#include <media/v4l2-async.h>
9aea470b	22	#include <media/v4l2-clk.h>
67826235	23	#include <media/v4l2-subdev.h>
67826235 GL	24
	25	/* IMX074 registers */
	26
	27	#define MODE_SELECT 0x0100
	28	#define IMAGE_ORIENTATION 0x0101
	29	#define GROUPED_PARAMETER_HOLD 0x0104
	30
	31	/* Integration Time */
	32	#define COARSE_INTEGRATION_TIME_HI 0x0202
	33	#define COARSE_INTEGRATION_TIME_LO 0x0203
	34	/* Gain */
	35	#define ANALOGUE_GAIN_CODE_GLOBAL_HI 0x0204
	36	#define ANALOGUE_GAIN_CODE_GLOBAL_LO 0x0205
	37
	38	/* PLL registers */
	39	#define PRE_PLL_CLK_DIV 0x0305
	40	#define PLL_MULTIPLIER 0x0307
	41	#define PLSTATIM 0x302b
	42	#define VNDMY_ABLMGSHLMT 0x300a
	43	#define Y_OPBADDR_START_DI 0x3014
	44	/* mode setting */
	45	#define FRAME_LENGTH_LINES_HI 0x0340
	46	#define FRAME_LENGTH_LINES_LO 0x0341
	47	#define LINE_LENGTH_PCK_HI 0x0342
	48	#define LINE_LENGTH_PCK_LO 0x0343
	49	#define YADDR_START 0x0347
	50	#define YADDR_END 0x034b
	51	#define X_OUTPUT_SIZE_MSB 0x034c
	52	#define X_OUTPUT_SIZE_LSB 0x034d
	53	#define Y_OUTPUT_SIZE_MSB 0x034e
	54	#define Y_OUTPUT_SIZE_LSB 0x034f
	55	#define X_EVEN_INC 0x0381
	56	#define X_ODD_INC 0x0383
	57	#define Y_EVEN_INC 0x0385
	58	#define Y_ODD_INC 0x0387
	59
	60	#define HMODEADD 0x3001
	61	#define VMODEADD 0x3016
	62	#define VAPPLINE_START 0x3069
	63	#define VAPPLINE_END 0x306b
	64	#define SHUTTER 0x3086
	65	#define HADDAVE 0x30e8
	66	#define LANESEL 0x3301
	67
	68	/* IMX074 supported geometry */
	69	#define IMX074_WIDTH 1052
	70	#define IMX074_HEIGHT 780
	71
	72	/* IMX074 has only one fixed colorspace per pixelcode */
	73	struct imx074_datafmt {
f5fe58fd	74	u32 code;
67826235 GL	75	enum v4l2_colorspace colorspace;
	76	};
	77
	78	struct imx074 {
	79	struct v4l2_subdev subdev;
	80	const struct imx074_datafmt *fmt;
9aea470b	81	struct v4l2_clk *clk;
67826235 GL	82	};
	83
	84	static const struct imx074_datafmt imx074_colour_fmts[] = {
f5fe58fd	85	{MEDIA_BUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
67826235 GL	86	};
	87
	88	static struct imx074 to_imx074(const struct i2c_client client)
	89	{
	90	return container_of(i2c_get_clientdata(client), struct imx074, subdev);
	91	}
	92
	93	/* Find a data format by a pixel code in an array */
f5fe58fd	94	static const struct imx074_datafmt *imx074_find_datafmt(u32 code)
67826235 GL	95	{
	96	int i;
	97
	98	for (i = 0; i < ARRAY_SIZE(imx074_colour_fmts); i++)
	99	if (imx074_colour_fmts[i].code == code)
	100	return imx074_colour_fmts + i;
	101
	102	return NULL;
	103	}
	104
	105	static int reg_write(struct i2c_client *client, const u16 addr, const u8 data)
	106	{
	107	struct i2c_adapter *adap = client->adapter;
	108	struct i2c_msg msg;
	109	unsigned char tx[3];
	110	int ret;
	111
	112	msg.addr = client->addr;
	113	msg.buf = tx;
	114	msg.len = 3;
	115	msg.flags = 0;
	116
	117	tx[0] = addr >> 8;
	118	tx[1] = addr & 0xff;
	119	tx[2] = data;
	120
	121	ret = i2c_transfer(adap, &msg, 1);
	122
	123	mdelay(2);
	124
	125	return ret == 1 ? 0 : -EIO;
	126	}
	127
	128	static int reg_read(struct i2c_client *client, const u16 addr)
	129	{
	130	u8 buf[2] = {addr >> 8, addr & 0xff};
	131	int ret;
	132	struct i2c_msg msgs[] = {
	133	{
	134	.addr = client->addr,
	135	.flags = 0,
	136	.len = 2,
	137	.buf = buf,
	138	}, {
	139	.addr = client->addr,
	140	.flags = I2C_M_RD,
	141	.len = 2,
	142	.buf = buf,
	143	},
	144	};
	145
	146	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
	147	if (ret < 0) {
	148	dev_warn(&client->dev, "Reading register %x from %x failed\n",
	149	addr, client->addr);
	150	return ret;
	151	}
	152
	153	return buf[0] & 0xff; /* no sign-extension */
	154	}
	155
717fd5b4 HV	156	static int imx074_set_fmt(struct v4l2_subdev *sd,
	157	struct v4l2_subdev_pad_config *cfg,
	158	struct v4l2_subdev_format *format)
67826235	159	{
717fd5b4	160	struct v4l2_mbus_framefmt *mf = &format->format;
67826235	161	const struct imx074_datafmt *fmt = imx074_find_datafmt(mf->code);
717fd5b4 HV	162	struct i2c_client *client = v4l2_get_subdevdata(sd);
	163	struct imx074 *priv = to_imx074(client);
	164
	165	if (format->pad)
	166	return -EINVAL;
67826235 GL	167
	168	dev_dbg(sd->v4l2_dev->dev, "%s(%u)\n", __func__, mf->code);
	169
	170	if (!fmt) {
717fd5b4 HV	171	/* MIPI CSI could have changed the format, double-check */
	172	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
	173	return -EINVAL;
67826235 GL	174	mf->code = imx074_colour_fmts[0].code;
	175	mf->colorspace = imx074_colour_fmts[0].colorspace;
	176	}
	177
	178	mf->width = IMX074_WIDTH;
	179	mf->height = IMX074_HEIGHT;
	180	mf->field = V4L2_FIELD_NONE;
	181
717fd5b4 HV	182	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
	183	priv->fmt = imx074_find_datafmt(mf->code);
	184	else
	185	cfg->try_fmt = *mf;
67826235 GL	186
	187	return 0;
	188	}
	189
da298c6d HV	190	static int imx074_get_fmt(struct v4l2_subdev *sd,
	191	struct v4l2_subdev_pad_config *cfg,
	192	struct v4l2_subdev_format *format)
67826235	193	{
da298c6d	194	struct v4l2_mbus_framefmt *mf = &format->format;
67826235 GL	195	struct i2c_client *client = v4l2_get_subdevdata(sd);
	196	struct imx074 *priv = to_imx074(client);
	197
	198	const struct imx074_datafmt *fmt = priv->fmt;
	199
da298c6d HV	200	if (format->pad)
	201	return -EINVAL;
	202
67826235 GL	203	mf->code = fmt->code;
	204	mf->colorspace = fmt->colorspace;
	205	mf->width = IMX074_WIDTH;
	206	mf->height = IMX074_HEIGHT;
	207	mf->field = V4L2_FIELD_NONE;
	208
	209	return 0;
	210	}
	211
10d5509c HV	212	static int imx074_get_selection(struct v4l2_subdev *sd,
	213	struct v4l2_subdev_pad_config *cfg,
	214	struct v4l2_subdev_selection *sel)
67826235	215	{
10d5509c HV	216	if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
10d5509c HV	217	return -EINVAL;
67826235	218
10d5509c HV	219	sel->r.left = 0;
	220	sel->r.top = 0;
	221	sel->r.width = IMX074_WIDTH;
	222	sel->r.height = IMX074_HEIGHT;
	223
	224	switch (sel->target) {
	225	case V4L2_SEL_TGT_CROP_BOUNDS:
	226	case V4L2_SEL_TGT_CROP_DEFAULT:
	227	case V4L2_SEL_TGT_CROP:
	228	return 0;
	229	default:
	230	return -EINVAL;
	231	}
67826235 GL	232	}
67826235 GL	233
ebcff5fc HV	234	static int imx074_enum_mbus_code(struct v4l2_subdev *sd,
	235	struct v4l2_subdev_pad_config *cfg,
	236	struct v4l2_subdev_mbus_code_enum *code)
67826235	237	{
ebcff5fc HV	238	if (code->pad \|\|
ebcff5fc HV	239	(unsigned int)code->index >= ARRAY_SIZE(imx074_colour_fmts))
67826235 GL	240	return -EINVAL;
67826235 GL	241
ebcff5fc	242	code->code = imx074_colour_fmts[code->index].code;
67826235 GL	243	return 0;
	244	}
	245
	246	static int imx074_s_stream(struct v4l2_subdev *sd, int enable)
	247	{
	248	struct i2c_client *client = v4l2_get_subdevdata(sd);
	249
	250	/* MODE_SELECT: stream or standby */
	251	return reg_write(client, MODE_SELECT, !!enable);
	252	}
	253
4ec10bac LP	254	static int imx074_s_power(struct v4l2_subdev *sd, int on)
	255	{
	256	struct i2c_client *client = v4l2_get_subdevdata(sd);
25a34811	257	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
9aea470b	258	struct imx074 *priv = to_imx074(client);
4ec10bac	259
9aea470b	260	return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
4ec10bac LP	261	}
4ec10bac LP	262
7cd74ffb GL	263	static int imx074_g_mbus_config(struct v4l2_subdev *sd,
	264	struct v4l2_mbus_config *cfg)
	265	{
	266	cfg->type = V4L2_MBUS_CSI2;
	267	cfg->flags = V4L2_MBUS_CSI2_2_LANE \|
	268	V4L2_MBUS_CSI2_CHANNEL_0 \|
	269	V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
	270
	271	return 0;
	272	}
	273
67826235 GL	274	static struct v4l2_subdev_video_ops imx074_subdev_video_ops = {
67826235 GL	275	.s_stream = imx074_s_stream,
7cd74ffb	276	.g_mbus_config = imx074_g_mbus_config,
67826235 GL	277	};
	278
	279	static struct v4l2_subdev_core_ops imx074_subdev_core_ops = {
4ec10bac	280	.s_power = imx074_s_power,
67826235 GL	281	};
67826235 GL	282
ebcff5fc HV	283	static const struct v4l2_subdev_pad_ops imx074_subdev_pad_ops = {
ebcff5fc HV	284	.enum_mbus_code = imx074_enum_mbus_code,
10d5509c	285	.get_selection = imx074_get_selection,
da298c6d	286	.get_fmt = imx074_get_fmt,
717fd5b4	287	.set_fmt = imx074_set_fmt,
ebcff5fc HV	288	};
ebcff5fc HV	289
67826235 GL	290	static struct v4l2_subdev_ops imx074_subdev_ops = {
	291	.core = &imx074_subdev_core_ops,
	292	.video = &imx074_subdev_video_ops,
ebcff5fc	293	.pad = &imx074_subdev_pad_ops,
67826235 GL	294	};
67826235 GL	295
14178aa5	296	static int imx074_video_probe(struct i2c_client *client)
67826235	297	{
4bbc6d52	298	struct v4l2_subdev *subdev = i2c_get_clientdata(client);
67826235 GL	299	int ret;
	300	u16 id;
	301
4bbc6d52 LP	302	ret = imx074_s_power(subdev, 1);
	303	if (ret < 0)
	304	return ret;
	305
67826235 GL	306	/* Read sensor Model ID */
	307	ret = reg_read(client, 0);
	308	if (ret < 0)
4bbc6d52	309	goto done;
67826235 GL	310
	311	id = ret << 8;
	312
	313	ret = reg_read(client, 1);
	314	if (ret < 0)
4bbc6d52	315	goto done;
67826235 GL	316
	317	id \|= ret;
	318
	319	dev_info(&client->dev, "Chip ID 0x%04x detected\n", id);
	320
4bbc6d52 LP	321	if (id != 0x74) {
	322	ret = -ENODEV;
	323	goto done;
	324	}
67826235 GL	325
	326	/* PLL Setting EXTCLK=24MHz, 22.5times */
	327	reg_write(client, PLL_MULTIPLIER, 0x2D);
	328	reg_write(client, PRE_PLL_CLK_DIV, 0x02);
	329	reg_write(client, PLSTATIM, 0x4B);
	330
	331	/* 2-lane mode */
	332	reg_write(client, 0x3024, 0x00);
	333
	334	reg_write(client, IMAGE_ORIENTATION, 0x00);
	335
	336	/* select RAW mode:
	337	* 0x08+0x08 = top 8 bits
	338	* 0x0a+0x08 = compressed 8-bits
	339	* 0x0a+0x0a = 10 bits
	340	*/
	341	reg_write(client, 0x0112, 0x08);
	342	reg_write(client, 0x0113, 0x08);
	343
	344	/* Base setting for High frame mode */
	345	reg_write(client, VNDMY_ABLMGSHLMT, 0x80);
	346	reg_write(client, Y_OPBADDR_START_DI, 0x08);
	347	reg_write(client, 0x3015, 0x37);
	348	reg_write(client, 0x301C, 0x01);
	349	reg_write(client, 0x302C, 0x05);
	350	reg_write(client, 0x3031, 0x26);
	351	reg_write(client, 0x3041, 0x60);
	352	reg_write(client, 0x3051, 0x24);
	353	reg_write(client, 0x3053, 0x34);
	354	reg_write(client, 0x3057, 0xC0);
	355	reg_write(client, 0x305C, 0x09);
	356	reg_write(client, 0x305D, 0x07);
	357	reg_write(client, 0x3060, 0x30);
	358	reg_write(client, 0x3065, 0x00);
	359	reg_write(client, 0x30AA, 0x08);
	360	reg_write(client, 0x30AB, 0x1C);
	361	reg_write(client, 0x30B0, 0x32);
	362	reg_write(client, 0x30B2, 0x83);
	363	reg_write(client, 0x30D3, 0x04);
	364	reg_write(client, 0x3106, 0x78);
	365	reg_write(client, 0x310C, 0x82);
	366	reg_write(client, 0x3304, 0x05);
	367	reg_write(client, 0x3305, 0x04);
	368	reg_write(client, 0x3306, 0x11);
	369	reg_write(client, 0x3307, 0x02);
	370	reg_write(client, 0x3308, 0x0C);
	371	reg_write(client, 0x3309, 0x06);
	372	reg_write(client, 0x330A, 0x08);
	373	reg_write(client, 0x330B, 0x04);
	374	reg_write(client, 0x330C, 0x08);
	375	reg_write(client, 0x330D, 0x06);
	376	reg_write(client, 0x330E, 0x01);
	377	reg_write(client, 0x3381, 0x00);
	378
	379	/* V : 1/2V-addition (1,3), H : 1/2H-averaging (1,3) -> Full HD */
	380	/* 1608 = 1560 + 48 (black lines) */
	381	reg_write(client, FRAME_LENGTH_LINES_HI, 0x06);
	382	reg_write(client, FRAME_LENGTH_LINES_LO, 0x48);
	383	reg_write(client, YADDR_START, 0x00);
	384	reg_write(client, YADDR_END, 0x2F);
	385	/* 0x838 == 2104 */
	386	reg_write(client, X_OUTPUT_SIZE_MSB, 0x08);
	387	reg_write(client, X_OUTPUT_SIZE_LSB, 0x38);
	388	/* 0x618 == 1560 */
389	reg_write(client, Y_OUTPUT_SIZE_MSB, 0x06);
390	reg_write(client, Y_OUTPUT_SIZE_LSB, 0x18);
391	reg_write(client, X_EVEN_INC, 0x01);
392	reg_write(client, X_ODD_INC, 0x03);
393	reg_write(client, Y_EVEN_INC, 0x01);
394	reg_write(client, Y_ODD_INC, 0x03);
395	reg_write(client, HMODEADD, 0x00);
396	reg_write(client, VMODEADD, 0x16);
397	reg_write(client, VAPPLINE_START, 0x24);
398	reg_write(client, VAPPLINE_END, 0x53);
399	reg_write(client, SHUTTER, 0x00);
400	reg_write(client, HADDAVE, 0x80);
401
402	reg_write(client, LANESEL, 0x00);
403
404	reg_write(client, GROUPED_PARAMETER_HOLD, 0x00); /* off */
405
4bbc6d52 LP	406	ret = 0;
	407
	408	done:
	409	imx074_s_power(subdev, 0);
	410	return ret;
67826235 GL	411	}
	412
	413	static int imx074_probe(struct i2c_client *client,
	414	const struct i2c_device_id *did)
	415	{
	416	struct imx074 *priv;
67826235	417	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
25a34811	418	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
9aea470b	419	int ret;
67826235	420
25a34811	421	if (!ssdd) {
67826235 GL	422	dev_err(&client->dev, "IMX074: missing platform data!\n");
	423	return -EINVAL;
	424	}
	425
	426	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
	427	dev_warn(&adapter->dev,
	428	"I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n");
	429	return -EIO;
	430	}
	431
70e176a5	432	priv = devm_kzalloc(&client->dev, sizeof(struct imx074), GFP_KERNEL);
67826235 GL	433	if (!priv)
	434	return -ENOMEM;
	435
	436	v4l2_i2c_subdev_init(&priv->subdev, client, &imx074_subdev_ops);
	437
67826235 GL	438	priv->fmt = &imx074_colour_fmts[0];
67826235 GL	439
9aea470b	440	priv->clk = v4l2_clk_get(&client->dev, "mclk");
ee17608d GL	441	if (IS_ERR(priv->clk)) {
	442	dev_info(&client->dev, "Error %ld getting clock\n", PTR_ERR(priv->clk));
	443	return -EPROBE_DEFER;
	444	}
	445
	446	ret = soc_camera_power_init(&client->dev, ssdd);
	447	if (ret < 0)
	448	goto epwrinit;
9aea470b GL	449
	450	ret = imx074_video_probe(client);
	451	if (ret < 0)
ee17608d	452	goto eprobe;
9aea470b	453
507fcd3d GL	454	ret = v4l2_async_register_subdev(&priv->subdev);
	455	if (!ret)
	456	return 0;
ee17608d GL	457
	458	epwrinit:
	459	eprobe:
	460	v4l2_clk_put(priv->clk);
9aea470b	461	return ret;
67826235 GL	462	}
	463
	464	static int imx074_remove(struct i2c_client *client)
	465	{
25a34811	466	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
9aea470b	467	struct imx074 *priv = to_imx074(client);
67826235	468
ee17608d	469	v4l2_async_unregister_subdev(&priv->subdev);
9aea470b	470	v4l2_clk_put(priv->clk);
ee17608d	471
25a34811 GL	472	if (ssdd->free_bus)
25a34811 GL	473	ssdd->free_bus(ssdd);
67826235 GL	474
	475	return 0;
	476	}
	477
	478	static const struct i2c_device_id imx074_id[] = {
	479	{ "imx074", 0 },
	480	{ }
	481	};
	482	MODULE_DEVICE_TABLE(i2c, imx074_id);
	483
	484	static struct i2c_driver imx074_i2c_driver = {
	485	.driver = {
	486	.name = "imx074",
	487	},
	488	.probe = imx074_probe,
	489	.remove = imx074_remove,
	490	.id_table = imx074_id,
	491	};
	492
c6e8d86f	493	module_i2c_driver(imx074_i2c_driver);
67826235 GL	494
	495	MODULE_DESCRIPTION("Sony IMX074 Camera driver");
	496	MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
	497	MODULE_LICENSE("GPL v2");