[mirror_ubuntu-artful-kernel.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 {
	enum v4l2_mbus_pixelcode	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[] = {
	{V4L2_MBUS_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(enum v4l2_mbus_pixelcode 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_try_fmt(struct v4l2_subdev *sd,
			  struct v4l2_mbus_framefmt *mf)
{
	const struct imx074_datafmt *fmt = imx074_find_datafmt(mf->code);

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

	if (!fmt) {
		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;

	return 0;
}

static int imx074_s_fmt(struct v4l2_subdev *sd,
			struct v4l2_mbus_framefmt *mf)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	struct imx074 *priv = to_imx074(client);

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

	/* MIPI CSI could have changed the format, double-check */
	if (!imx074_find_datafmt(mf->code))
		return -EINVAL;

	imx074_try_fmt(sd, mf);

	priv->fmt = imx074_find_datafmt(mf->code);

	return 0;
}

static int imx074_g_fmt(struct v4l2_subdev *sd,
			struct v4l2_mbus_framefmt *mf)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	struct imx074 *priv = to_imx074(client);

	const struct imx074_datafmt *fmt = priv->fmt;

	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_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
{
	struct v4l2_rect *rect = &a->c;

	a->type		= V4L2_BUF_TYPE_VIDEO_CAPTURE;
	rect->top	= 0;
	rect->left	= 0;
	rect->width	= IMX074_WIDTH;
	rect->height	= IMX074_HEIGHT;

	return 0;
}

static int imx074_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
{
	a->bounds.left			= 0;
	a->bounds.top			= 0;
	a->bounds.width			= IMX074_WIDTH;
	a->bounds.height		= IMX074_HEIGHT;
	a->defrect			= a->bounds;
	a->type				= V4L2_BUF_TYPE_VIDEO_CAPTURE;
	a->pixelaspect.numerator	= 1;
	a->pixelaspect.denominator	= 1;

	return 0;
}

static int imx074_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
			   enum v4l2_mbus_pixelcode *code)
{
	if ((unsigned int)index >= ARRAY_SIZE(imx074_colour_fmts))
		return -EINVAL;

	*code = imx074_colour_fmts[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,
	.s_mbus_fmt	= imx074_s_fmt,
	.g_mbus_fmt	= imx074_g_fmt,
	.try_mbus_fmt	= imx074_try_fmt,
	.enum_mbus_fmt	= imx074_enum_fmt,
	.g_crop		= imx074_g_crop,
	.cropcap	= imx074_cropcap,
	.g_mbus_config	= imx074_g_mbus_config,
};

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

static struct v4l2_subdev_ops imx074_subdev_ops = {
	.core	= &imx074_subdev_core_ops,
	.video	= &imx074_subdev_video_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;

	return v4l2_async_register_subdev(&priv->subdev);

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 {
	74	enum v4l2_mbus_pixelcode code;
	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[] = {
	85	{V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
	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 */
	94	static const struct imx074_datafmt *imx074_find_datafmt(enum v4l2_mbus_pixelcode code)
	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
156	static int imx074_try_fmt(struct v4l2_subdev *sd,
157	struct v4l2_mbus_framefmt *mf)
158	{
159	const struct imx074_datafmt *fmt = imx074_find_datafmt(mf->code);
160
161	dev_dbg(sd->v4l2_dev->dev, "%s(%u)\n", __func__, mf->code);
162
163	if (!fmt) {
164	mf->code = imx074_colour_fmts[0].code;
165	mf->colorspace = imx074_colour_fmts[0].colorspace;
166	}
167
168	mf->width = IMX074_WIDTH;
169	mf->height = IMX074_HEIGHT;
170	mf->field = V4L2_FIELD_NONE;
171
172	return 0;
173	}
174
175	static int imx074_s_fmt(struct v4l2_subdev *sd,
176	struct v4l2_mbus_framefmt *mf)
177	{
178	struct i2c_client *client = v4l2_get_subdevdata(sd);
179	struct imx074 *priv = to_imx074(client);
180
181	dev_dbg(sd->v4l2_dev->dev, "%s(%u)\n", __func__, mf->code);
182
183	/* MIPI CSI could have changed the format, double-check */
184	if (!imx074_find_datafmt(mf->code))
185	return -EINVAL;
186
187	imx074_try_fmt(sd, mf);
188
189	priv->fmt = imx074_find_datafmt(mf->code);
190
191	return 0;
192	}
193
194	static int imx074_g_fmt(struct v4l2_subdev *sd,
195	struct v4l2_mbus_framefmt *mf)
196	{
197	struct i2c_client *client = v4l2_get_subdevdata(sd);
198	struct imx074 *priv = to_imx074(client);
199
200	const struct imx074_datafmt *fmt = priv->fmt;
201
202	mf->code = fmt->code;
203	mf->colorspace = fmt->colorspace;
204	mf->width = IMX074_WIDTH;
205	mf->height = IMX074_HEIGHT;
206	mf->field = V4L2_FIELD_NONE;
207
208	return 0;
209	}
210
211	static int imx074_g_crop(struct v4l2_subdev sd, struct v4l2_crop a)
212	{
213	struct v4l2_rect *rect = &a->c;
214
215	a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
216	rect->top = 0;
217	rect->left = 0;
218	rect->width = IMX074_WIDTH;
219	rect->height = IMX074_HEIGHT;
220
221	return 0;
222	}
223
224	static int imx074_cropcap(struct v4l2_subdev sd, struct v4l2_cropcap a)
225	{
226	a->bounds.left = 0;
227	a->bounds.top = 0;
228	a->bounds.width = IMX074_WIDTH;
229	a->bounds.height = IMX074_HEIGHT;
230	a->defrect = a->bounds;
231	a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
232	a->pixelaspect.numerator = 1;
233	a->pixelaspect.denominator = 1;
234
235	return 0;
236	}
237
238	static int imx074_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
239	enum v4l2_mbus_pixelcode *code)
240	{
241	if ((unsigned int)index >= ARRAY_SIZE(imx074_colour_fmts))
242	return -EINVAL;
243
244	*code = imx074_colour_fmts[index].code;
245	return 0;
246	}
247
248	static int imx074_s_stream(struct v4l2_subdev *sd, int enable)
249	{
250	struct i2c_client *client = v4l2_get_subdevdata(sd);
251
252	/* MODE_SELECT: stream or standby */
253	return reg_write(client, MODE_SELECT, !!enable);
254	}
255
4ec10bac LP	256	static int imx074_s_power(struct v4l2_subdev *sd, int on)
	257	{
	258	struct i2c_client *client = v4l2_get_subdevdata(sd);
25a34811	259	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
9aea470b	260	struct imx074 *priv = to_imx074(client);
4ec10bac	261
9aea470b	262	return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
4ec10bac LP	263	}
4ec10bac LP	264
7cd74ffb GL	265	static int imx074_g_mbus_config(struct v4l2_subdev *sd,
	266	struct v4l2_mbus_config *cfg)
	267	{
	268	cfg->type = V4L2_MBUS_CSI2;
	269	cfg->flags = V4L2_MBUS_CSI2_2_LANE \|
	270	V4L2_MBUS_CSI2_CHANNEL_0 \|
	271	V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
	272
	273	return 0;
	274	}
	275
67826235 GL	276	static struct v4l2_subdev_video_ops imx074_subdev_video_ops = {
	277	.s_stream = imx074_s_stream,
	278	.s_mbus_fmt = imx074_s_fmt,
	279	.g_mbus_fmt = imx074_g_fmt,
	280	.try_mbus_fmt = imx074_try_fmt,
	281	.enum_mbus_fmt = imx074_enum_fmt,
	282	.g_crop = imx074_g_crop,
	283	.cropcap = imx074_cropcap,
7cd74ffb	284	.g_mbus_config = imx074_g_mbus_config,
67826235 GL	285	};
	286
	287	static struct v4l2_subdev_core_ops imx074_subdev_core_ops = {
4ec10bac	288	.s_power = imx074_s_power,
67826235 GL	289	};
	290
	291	static struct v4l2_subdev_ops imx074_subdev_ops = {
	292	.core = &imx074_subdev_core_ops,
	293	.video = &imx074_subdev_video_ops,
	294	};
	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
ee17608d GL	454	return v4l2_async_register_subdev(&priv->subdev);
	455
	456	epwrinit:
	457	eprobe:
	458	v4l2_clk_put(priv->clk);
9aea470b	459	return ret;
67826235 GL	460	}
	461
	462	static int imx074_remove(struct i2c_client *client)
	463	{
25a34811	464	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
9aea470b	465	struct imx074 *priv = to_imx074(client);
67826235	466
ee17608d	467	v4l2_async_unregister_subdev(&priv->subdev);
9aea470b	468	v4l2_clk_put(priv->clk);
ee17608d	469
25a34811 GL	470	if (ssdd->free_bus)
25a34811 GL	471	ssdd->free_bus(ssdd);
67826235 GL	472
	473	return 0;
	474	}
	475
	476	static const struct i2c_device_id imx074_id[] = {
	477	{ "imx074", 0 },
	478	{ }
	479	};
	480	MODULE_DEVICE_TABLE(i2c, imx074_id);
	481
	482	static struct i2c_driver imx074_i2c_driver = {
	483	.driver = {
	484	.name = "imx074",
	485	},
	486	.probe = imx074_probe,
	487	.remove = imx074_remove,
	488	.id_table = imx074_id,
	489	};
	490
c6e8d86f	491	module_i2c_driver(imx074_i2c_driver);
67826235 GL	492
	493	MODULE_DESCRIPTION("Sony IMX074 Camera driver");
	494	MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
	495	MODULE_LICENSE("GPL v2");