[mirror_ubuntu-bionic-kernel.git] / drivers / media / video / 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-subdev.h>
#include <media/v4l2-chip-ident.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;
};

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_g_chip_ident(struct v4l2_subdev *sd,
			       struct v4l2_dbg_chip_ident *id)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
		return -EINVAL;

	if (id->match.addr != client->addr)
		return -ENODEV;

	id->ident	= V4L2_IDENT_IMX074;
	id->revision	= 0;

	return 0;
}

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 = {
	.g_chip_ident	= imx074_g_chip_ident,
};

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)
{
	int ret;
	u16 id;

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

	id = ret << 8;

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

	id |= ret;

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

	if (id != 0x74)
		return -ENODEV;

	/* 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 */

	return 0;
}

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_link *icl = soc_camera_i2c_to_link(client);
	int ret;

	if (!icl) {
		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 = kzalloc(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];

	ret = imx074_video_probe(client);
	if (ret < 0) {
		kfree(priv);
		return ret;
	}

	return ret;
}

static int imx074_remove(struct i2c_client *client)
{
	struct imx074 *priv = to_imx074(client);
	struct soc_camera_link *icl = soc_camera_i2c_to_link(client);

	if (icl->free_bus)
		icl->free_bus(icl);
	kfree(priv);

	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,
};

static int __init imx074_mod_init(void)
{
	return i2c_add_driver(&imx074_i2c_driver);
}

static void __exit imx074_mod_exit(void)
{
	i2c_del_driver(&imx074_i2c_driver);
}

module_init(imx074_mod_init);
module_exit(imx074_mod_exit);

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>
67826235 GL	21	#include <media/v4l2-subdev.h>
	22	#include <media/v4l2-chip-ident.h>
	23
	24	/* IMX074 registers */
	25
	26	#define MODE_SELECT 0x0100
	27	#define IMAGE_ORIENTATION 0x0101
	28	#define GROUPED_PARAMETER_HOLD 0x0104
	29
	30	/* Integration Time */
	31	#define COARSE_INTEGRATION_TIME_HI 0x0202
	32	#define COARSE_INTEGRATION_TIME_LO 0x0203
	33	/* Gain */
	34	#define ANALOGUE_GAIN_CODE_GLOBAL_HI 0x0204
	35	#define ANALOGUE_GAIN_CODE_GLOBAL_LO 0x0205
	36
	37	/* PLL registers */
	38	#define PRE_PLL_CLK_DIV 0x0305
	39	#define PLL_MULTIPLIER 0x0307
	40	#define PLSTATIM 0x302b
	41	#define VNDMY_ABLMGSHLMT 0x300a
	42	#define Y_OPBADDR_START_DI 0x3014
	43	/* mode setting */
	44	#define FRAME_LENGTH_LINES_HI 0x0340
	45	#define FRAME_LENGTH_LINES_LO 0x0341
	46	#define LINE_LENGTH_PCK_HI 0x0342
	47	#define LINE_LENGTH_PCK_LO 0x0343
	48	#define YADDR_START 0x0347
	49	#define YADDR_END 0x034b
	50	#define X_OUTPUT_SIZE_MSB 0x034c
	51	#define X_OUTPUT_SIZE_LSB 0x034d
	52	#define Y_OUTPUT_SIZE_MSB 0x034e
	53	#define Y_OUTPUT_SIZE_LSB 0x034f
	54	#define X_EVEN_INC 0x0381
	55	#define X_ODD_INC 0x0383
	56	#define Y_EVEN_INC 0x0385
	57	#define Y_ODD_INC 0x0387
	58
	59	#define HMODEADD 0x3001
	60	#define VMODEADD 0x3016
	61	#define VAPPLINE_START 0x3069
	62	#define VAPPLINE_END 0x306b
	63	#define SHUTTER 0x3086
	64	#define HADDAVE 0x30e8
	65	#define LANESEL 0x3301
	66
	67	/* IMX074 supported geometry */
	68	#define IMX074_WIDTH 1052
	69	#define IMX074_HEIGHT 780
	70
	71	/* IMX074 has only one fixed colorspace per pixelcode */
	72	struct imx074_datafmt {
	73	enum v4l2_mbus_pixelcode code;
	74	enum v4l2_colorspace colorspace;
	75	};
	76
	77	struct imx074 {
	78	struct v4l2_subdev subdev;
	79	const struct imx074_datafmt *fmt;
	80	};
	81
	82	static const struct imx074_datafmt imx074_colour_fmts[] = {
	83	{V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
	84	};
85
86	static struct imx074 to_imx074(const struct i2c_client client)
87	{
88	return container_of(i2c_get_clientdata(client), struct imx074, subdev);
89	}
90
91	/* Find a data format by a pixel code in an array */
92	static const struct imx074_datafmt *imx074_find_datafmt(enum v4l2_mbus_pixelcode code)
93	{
94	int i;
95
96	for (i = 0; i < ARRAY_SIZE(imx074_colour_fmts); i++)
97	if (imx074_colour_fmts[i].code == code)
98	return imx074_colour_fmts + i;
99
100	return NULL;
101	}
102
103	static int reg_write(struct i2c_client *client, const u16 addr, const u8 data)
104	{
105	struct i2c_adapter *adap = client->adapter;
106	struct i2c_msg msg;
107	unsigned char tx[3];
108	int ret;
109
110	msg.addr = client->addr;
111	msg.buf = tx;
112	msg.len = 3;
113	msg.flags = 0;
114
115	tx[0] = addr >> 8;
116	tx[1] = addr & 0xff;
117	tx[2] = data;
118
119	ret = i2c_transfer(adap, &msg, 1);
120
121	mdelay(2);
122
123	return ret == 1 ? 0 : -EIO;
124	}
125
126	static int reg_read(struct i2c_client *client, const u16 addr)
127	{
128	u8 buf[2] = {addr >> 8, addr & 0xff};
129	int ret;
130	struct i2c_msg msgs[] = {
131	{
132	.addr = client->addr,
133	.flags = 0,
134	.len = 2,
135	.buf = buf,
136	}, {
137	.addr = client->addr,
138	.flags = I2C_M_RD,
139	.len = 2,
140	.buf = buf,
141	},
142	};
143
144	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
145	if (ret < 0) {
146	dev_warn(&client->dev, "Reading register %x from %x failed\n",
147	addr, client->addr);
148	return ret;
149	}
150
151	return buf[0] & 0xff; /* no sign-extension */
152	}
153
154	static int imx074_try_fmt(struct v4l2_subdev *sd,
155	struct v4l2_mbus_framefmt *mf)
156	{
157	const struct imx074_datafmt *fmt = imx074_find_datafmt(mf->code);
158
159	dev_dbg(sd->v4l2_dev->dev, "%s(%u)\n", __func__, mf->code);
160
161	if (!fmt) {
162	mf->code = imx074_colour_fmts[0].code;
163	mf->colorspace = imx074_colour_fmts[0].colorspace;
164	}
165
166	mf->width = IMX074_WIDTH;
167	mf->height = IMX074_HEIGHT;
168	mf->field = V4L2_FIELD_NONE;
169
170	return 0;
171	}
172
173	static int imx074_s_fmt(struct v4l2_subdev *sd,
174	struct v4l2_mbus_framefmt *mf)
175	{
176	struct i2c_client *client = v4l2_get_subdevdata(sd);
177	struct imx074 *priv = to_imx074(client);
178
179	dev_dbg(sd->v4l2_dev->dev, "%s(%u)\n", __func__, mf->code);
180
181	/* MIPI CSI could have changed the format, double-check */
182	if (!imx074_find_datafmt(mf->code))
183	return -EINVAL;
184
185	imx074_try_fmt(sd, mf);
186
187	priv->fmt = imx074_find_datafmt(mf->code);
188
189	return 0;
190	}
191
192	static int imx074_g_fmt(struct v4l2_subdev *sd,
193	struct v4l2_mbus_framefmt *mf)
194	{
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
200	mf->code = fmt->code;
201	mf->colorspace = fmt->colorspace;
202	mf->width = IMX074_WIDTH;
203	mf->height = IMX074_HEIGHT;
204	mf->field = V4L2_FIELD_NONE;
205
206	return 0;
207	}
208
209	static int imx074_g_crop(struct v4l2_subdev sd, struct v4l2_crop a)
210	{
211	struct v4l2_rect *rect = &a->c;
212
213	a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
214	rect->top = 0;
215	rect->left = 0;
216	rect->width = IMX074_WIDTH;
217	rect->height = IMX074_HEIGHT;
218
219	return 0;
220	}
221
222	static int imx074_cropcap(struct v4l2_subdev sd, struct v4l2_cropcap a)
223	{
224	a->bounds.left = 0;
225	a->bounds.top = 0;
226	a->bounds.width = IMX074_WIDTH;
227	a->bounds.height = IMX074_HEIGHT;
228	a->defrect = a->bounds;
229	a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
230	a->pixelaspect.numerator = 1;
231	a->pixelaspect.denominator = 1;
232
233	return 0;
234	}
235
236	static int imx074_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
237	enum v4l2_mbus_pixelcode *code)
238	{
239	if ((unsigned int)index >= ARRAY_SIZE(imx074_colour_fmts))
240	return -EINVAL;
241
242	*code = imx074_colour_fmts[index].code;
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
254	static int imx074_g_chip_ident(struct v4l2_subdev *sd,
255	struct v4l2_dbg_chip_ident *id)
256	{
257	struct i2c_client *client = v4l2_get_subdevdata(sd);
258
259	if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
260	return -EINVAL;
261
262	if (id->match.addr != client->addr)
263	return -ENODEV;
264
265	id->ident = V4L2_IDENT_IMX074;
266	id->revision = 0;
267
268	return 0;
269	}
270
7cd74ffb GL	271	static int imx074_g_mbus_config(struct v4l2_subdev *sd,
	272	struct v4l2_mbus_config *cfg)
	273	{
	274	cfg->type = V4L2_MBUS_CSI2;
	275	cfg->flags = V4L2_MBUS_CSI2_2_LANE \|
	276	V4L2_MBUS_CSI2_CHANNEL_0 \|
	277	V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
	278
	279	return 0;
	280	}
	281
67826235 GL	282	static struct v4l2_subdev_video_ops imx074_subdev_video_ops = {
	283	.s_stream = imx074_s_stream,
	284	.s_mbus_fmt = imx074_s_fmt,
	285	.g_mbus_fmt = imx074_g_fmt,
	286	.try_mbus_fmt = imx074_try_fmt,
	287	.enum_mbus_fmt = imx074_enum_fmt,
	288	.g_crop = imx074_g_crop,
	289	.cropcap = imx074_cropcap,
7cd74ffb	290	.g_mbus_config = imx074_g_mbus_config,
67826235 GL	291	};
	292
	293	static struct v4l2_subdev_core_ops imx074_subdev_core_ops = {
	294	.g_chip_ident = imx074_g_chip_ident,
	295	};
	296
	297	static struct v4l2_subdev_ops imx074_subdev_ops = {
	298	.core = &imx074_subdev_core_ops,
	299	.video = &imx074_subdev_video_ops,
	300	};
	301
14178aa5	302	static int imx074_video_probe(struct i2c_client *client)
67826235 GL	303	{
	304	int ret;
	305	u16 id;
	306
	307	/* Read sensor Model ID */
	308	ret = reg_read(client, 0);
	309	if (ret < 0)
	310	return ret;
	311
	312	id = ret << 8;
	313
	314	ret = reg_read(client, 1);
	315	if (ret < 0)
	316	return ret;
	317
	318	id \|= ret;
	319
	320	dev_info(&client->dev, "Chip ID 0x%04x detected\n", id);
	321
	322	if (id != 0x74)
	323	return -ENODEV;
	324
	325	/* PLL Setting EXTCLK=24MHz, 22.5times */
	326	reg_write(client, PLL_MULTIPLIER, 0x2D);
	327	reg_write(client, PRE_PLL_CLK_DIV, 0x02);
	328	reg_write(client, PLSTATIM, 0x4B);
	329
	330	/* 2-lane mode */
	331	reg_write(client, 0x3024, 0x00);
	332
	333	reg_write(client, IMAGE_ORIENTATION, 0x00);
	334
	335	/* select RAW mode:
	336	* 0x08+0x08 = top 8 bits
	337	* 0x0a+0x08 = compressed 8-bits
	338	* 0x0a+0x0a = 10 bits
	339	*/
	340	reg_write(client, 0x0112, 0x08);
	341	reg_write(client, 0x0113, 0x08);
	342
	343	/* Base setting for High frame mode */
	344	reg_write(client, VNDMY_ABLMGSHLMT, 0x80);
	345	reg_write(client, Y_OPBADDR_START_DI, 0x08);
	346	reg_write(client, 0x3015, 0x37);
	347	reg_write(client, 0x301C, 0x01);
	348	reg_write(client, 0x302C, 0x05);
	349	reg_write(client, 0x3031, 0x26);
	350	reg_write(client, 0x3041, 0x60);
	351	reg_write(client, 0x3051, 0x24);
	352	reg_write(client, 0x3053, 0x34);
	353	reg_write(client, 0x3057, 0xC0);
	354	reg_write(client, 0x305C, 0x09);
	355	reg_write(client, 0x305D, 0x07);
	356	reg_write(client, 0x3060, 0x30);
	357	reg_write(client, 0x3065, 0x00);
	358	reg_write(client, 0x30AA, 0x08);
	359	reg_write(client, 0x30AB, 0x1C);
	360	reg_write(client, 0x30B0, 0x32);
	361	reg_write(client, 0x30B2, 0x83);
	362	reg_write(client, 0x30D3, 0x04);
	363	reg_write(client, 0x3106, 0x78);
	364	reg_write(client, 0x310C, 0x82);
	365	reg_write(client, 0x3304, 0x05);
	366	reg_write(client, 0x3305, 0x04);
367	reg_write(client, 0x3306, 0x11);
368	reg_write(client, 0x3307, 0x02);
369	reg_write(client, 0x3308, 0x0C);
370	reg_write(client, 0x3309, 0x06);
371	reg_write(client, 0x330A, 0x08);
372	reg_write(client, 0x330B, 0x04);
373	reg_write(client, 0x330C, 0x08);
374	reg_write(client, 0x330D, 0x06);
375	reg_write(client, 0x330E, 0x01);
376	reg_write(client, 0x3381, 0x00);
377
378	/* V : 1/2V-addition (1,3), H : 1/2H-averaging (1,3) -> Full HD */
379	/* 1608 = 1560 + 48 (black lines) */
380	reg_write(client, FRAME_LENGTH_LINES_HI, 0x06);
381	reg_write(client, FRAME_LENGTH_LINES_LO, 0x48);
382	reg_write(client, YADDR_START, 0x00);
383	reg_write(client, YADDR_END, 0x2F);
384	/* 0x838 == 2104 */
385	reg_write(client, X_OUTPUT_SIZE_MSB, 0x08);
386	reg_write(client, X_OUTPUT_SIZE_LSB, 0x38);
387	/* 0x618 == 1560 */
388	reg_write(client, Y_OUTPUT_SIZE_MSB, 0x06);
389	reg_write(client, Y_OUTPUT_SIZE_LSB, 0x18);
390	reg_write(client, X_EVEN_INC, 0x01);
391	reg_write(client, X_ODD_INC, 0x03);
392	reg_write(client, Y_EVEN_INC, 0x01);
393	reg_write(client, Y_ODD_INC, 0x03);
394	reg_write(client, HMODEADD, 0x00);
395	reg_write(client, VMODEADD, 0x16);
396	reg_write(client, VAPPLINE_START, 0x24);
397	reg_write(client, VAPPLINE_END, 0x53);
398	reg_write(client, SHUTTER, 0x00);
399	reg_write(client, HADDAVE, 0x80);
400
401	reg_write(client, LANESEL, 0x00);
402
403	reg_write(client, GROUPED_PARAMETER_HOLD, 0x00); /* off */
404
405	return 0;
406	}
407
408	static int imx074_probe(struct i2c_client *client,
409	const struct i2c_device_id *did)
410	{
411	struct imx074 *priv;
67826235	412	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
14178aa5	413	struct soc_camera_link *icl = soc_camera_i2c_to_link(client);
67826235 GL	414	int ret;
67826235 GL	415
67826235 GL	416	if (!icl) {
	417	dev_err(&client->dev, "IMX074: missing platform data!\n");
	418	return -EINVAL;
	419	}
	420
	421	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
	422	dev_warn(&adapter->dev,
	423	"I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n");
	424	return -EIO;
	425	}
	426
	427	priv = kzalloc(sizeof(struct imx074), GFP_KERNEL);
	428	if (!priv)
	429	return -ENOMEM;
	430
	431	v4l2_i2c_subdev_init(&priv->subdev, client, &imx074_subdev_ops);
	432
67826235 GL	433	priv->fmt = &imx074_colour_fmts[0];
67826235 GL	434
14178aa5	435	ret = imx074_video_probe(client);
67826235	436	if (ret < 0) {
67826235 GL	437	kfree(priv);
	438	return ret;
	439	}
	440
	441	return ret;
	442	}
	443
	444	static int imx074_remove(struct i2c_client *client)
	445	{
	446	struct imx074 *priv = to_imx074(client);
14178aa5	447	struct soc_camera_link *icl = soc_camera_i2c_to_link(client);
67826235	448
67826235 GL	449	if (icl->free_bus)
67826235 GL	450	icl->free_bus(icl);
67826235 GL	451	kfree(priv);
	452
	453	return 0;
	454	}
	455
	456	static const struct i2c_device_id imx074_id[] = {
	457	{ "imx074", 0 },
	458	{ }
	459	};
	460	MODULE_DEVICE_TABLE(i2c, imx074_id);
	461
	462	static struct i2c_driver imx074_i2c_driver = {
	463	.driver = {
	464	.name = "imx074",
	465	},
	466	.probe = imx074_probe,
	467	.remove = imx074_remove,
	468	.id_table = imx074_id,
	469	};
	470
	471	static int __init imx074_mod_init(void)
	472	{
	473	return i2c_add_driver(&imx074_i2c_driver);
	474	}
	475
	476	static void __exit imx074_mod_exit(void)
	477	{
	478	i2c_del_driver(&imx074_i2c_driver);
	479	}
	480
	481	module_init(imx074_mod_init);
	482	module_exit(imx074_mod_exit);
	483
	484	MODULE_DESCRIPTION("Sony IMX074 Camera driver");
	485	MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
	486	MODULE_LICENSE("GPL v2");