[GitHub/mt8127/android_kernel_alcatel_ttab.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/slab.h>
#include <linux/videodev2.h>

#include <media/soc_camera.h>
#include <media/soc_mediabus.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 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,
};

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,
};

/*
 * We have to provide soc-camera operations, but we don't have anything to say
 * there. The MIPI CSI2 driver will provide .query_bus_param and .set_bus_param
 */
static unsigned long imx074_query_bus_param(struct soc_camera_device *icd)
{
	return 0;
}

static int imx074_set_bus_param(struct soc_camera_device *icd,
				 unsigned long flags)
{
	return -EINVAL;
}

static struct soc_camera_ops imx074_ops = {
	.query_bus_param	= imx074_query_bus_param,
	.set_bus_param		= imx074_set_bus_param,
};

static int imx074_video_probe(struct soc_camera_device *icd,
			      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 soc_camera_device *icd = client->dev.platform_data;
	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
	struct soc_camera_link *icl;
	int ret;

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

	icl = to_soc_camera_link(icd);
	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);

	icd->ops	= &imx074_ops;
	priv->fmt	= &imx074_colour_fmts[0];

	ret = imx074_video_probe(icd, client);
	if (ret < 0) {
		icd->ops = NULL;
		kfree(priv);
		return ret;
	}

	return ret;
}

static int imx074_remove(struct i2c_client *client)
{
	struct imx074 *priv = to_imx074(client);
	struct soc_camera_device *icd = client->dev.platform_data;
	struct soc_camera_link *icl = to_soc_camera_link(icd);

	icd->ops = NULL;
	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>
	15	#include <linux/slab.h>
	16	#include <linux/videodev2.h>
	17
	18	#include <media/soc_camera.h>
	19	#include <media/soc_mediabus.h>
	20	#include <media/v4l2-subdev.h>
	21	#include <media/v4l2-chip-ident.h>
	22
	23	/* IMX074 registers */
	24
	25	#define MODE_SELECT 0x0100
	26	#define IMAGE_ORIENTATION 0x0101
	27	#define GROUPED_PARAMETER_HOLD 0x0104
	28
	29	/* Integration Time */
	30	#define COARSE_INTEGRATION_TIME_HI 0x0202
	31	#define COARSE_INTEGRATION_TIME_LO 0x0203
	32	/* Gain */
	33	#define ANALOGUE_GAIN_CODE_GLOBAL_HI 0x0204
	34	#define ANALOGUE_GAIN_CODE_GLOBAL_LO 0x0205
	35
	36	/* PLL registers */
	37	#define PRE_PLL_CLK_DIV 0x0305
	38	#define PLL_MULTIPLIER 0x0307
	39	#define PLSTATIM 0x302b
	40	#define VNDMY_ABLMGSHLMT 0x300a
	41	#define Y_OPBADDR_START_DI 0x3014
	42	/* mode setting */
	43	#define FRAME_LENGTH_LINES_HI 0x0340
	44	#define FRAME_LENGTH_LINES_LO 0x0341
	45	#define LINE_LENGTH_PCK_HI 0x0342
	46	#define LINE_LENGTH_PCK_LO 0x0343
	47	#define YADDR_START 0x0347
	48	#define YADDR_END 0x034b
	49	#define X_OUTPUT_SIZE_MSB 0x034c
	50	#define X_OUTPUT_SIZE_LSB 0x034d
	51	#define Y_OUTPUT_SIZE_MSB 0x034e
	52	#define Y_OUTPUT_SIZE_LSB 0x034f
	53	#define X_EVEN_INC 0x0381
	54	#define X_ODD_INC 0x0383
	55	#define Y_EVEN_INC 0x0385
	56	#define Y_ODD_INC 0x0387
	57
	58	#define HMODEADD 0x3001
	59	#define VMODEADD 0x3016
	60	#define VAPPLINE_START 0x3069
	61	#define VAPPLINE_END 0x306b
	62	#define SHUTTER 0x3086
	63	#define HADDAVE 0x30e8
	64	#define LANESEL 0x3301
65
66	/* IMX074 supported geometry */
67	#define IMX074_WIDTH 1052
68	#define IMX074_HEIGHT 780
69
70	/* IMX074 has only one fixed colorspace per pixelcode */
71	struct imx074_datafmt {
72	enum v4l2_mbus_pixelcode code;
73	enum v4l2_colorspace colorspace;
74	};
75
76	struct imx074 {
77	struct v4l2_subdev subdev;
78	const struct imx074_datafmt *fmt;
79	};
80
81	static const struct imx074_datafmt imx074_colour_fmts[] = {
82	{V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
83	};
84
85	static struct imx074 to_imx074(const struct i2c_client client)
86	{
87	return container_of(i2c_get_clientdata(client), struct imx074, subdev);
88	}
89
90	/* Find a data format by a pixel code in an array */
91	static const struct imx074_datafmt *imx074_find_datafmt(enum v4l2_mbus_pixelcode code)
92	{
93	int i;
94
95	for (i = 0; i < ARRAY_SIZE(imx074_colour_fmts); i++)
96	if (imx074_colour_fmts[i].code == code)
97	return imx074_colour_fmts + i;
98
99	return NULL;
100	}
101
102	static int reg_write(struct i2c_client *client, const u16 addr, const u8 data)
103	{
104	struct i2c_adapter *adap = client->adapter;
105	struct i2c_msg msg;
106	unsigned char tx[3];
107	int ret;
108
109	msg.addr = client->addr;
110	msg.buf = tx;
111	msg.len = 3;
112	msg.flags = 0;
113
114	tx[0] = addr >> 8;
115	tx[1] = addr & 0xff;
116	tx[2] = data;
117
118	ret = i2c_transfer(adap, &msg, 1);
119
120	mdelay(2);
121
122	return ret == 1 ? 0 : -EIO;
123	}
124
125	static int reg_read(struct i2c_client *client, const u16 addr)
126	{
127	u8 buf[2] = {addr >> 8, addr & 0xff};
128	int ret;
129	struct i2c_msg msgs[] = {
130	{
131	.addr = client->addr,
132	.flags = 0,
133	.len = 2,
134	.buf = buf,
135	}, {
136	.addr = client->addr,
137	.flags = I2C_M_RD,
138	.len = 2,
139	.buf = buf,
140	},
141	};
142
143	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
144	if (ret < 0) {
145	dev_warn(&client->dev, "Reading register %x from %x failed\n",
146	addr, client->addr);
147	return ret;
148	}
149
150	return buf[0] & 0xff; /* no sign-extension */
151	}
152
153	static int imx074_try_fmt(struct v4l2_subdev *sd,
154	struct v4l2_mbus_framefmt *mf)
155	{
156	const struct imx074_datafmt *fmt = imx074_find_datafmt(mf->code);
157
158	dev_dbg(sd->v4l2_dev->dev, "%s(%u)\n", __func__, mf->code);
159
160	if (!fmt) {
161	mf->code = imx074_colour_fmts[0].code;
162	mf->colorspace = imx074_colour_fmts[0].colorspace;
163	}
164
165	mf->width = IMX074_WIDTH;
166	mf->height = IMX074_HEIGHT;
167	mf->field = V4L2_FIELD_NONE;
168
169	return 0;
170	}
171
172	static int imx074_s_fmt(struct v4l2_subdev *sd,
173	struct v4l2_mbus_framefmt *mf)
174	{
175	struct i2c_client *client = v4l2_get_subdevdata(sd);
176	struct imx074 *priv = to_imx074(client);
177
178	dev_dbg(sd->v4l2_dev->dev, "%s(%u)\n", __func__, mf->code);
179
180	/* MIPI CSI could have changed the format, double-check */
181	if (!imx074_find_datafmt(mf->code))
182	return -EINVAL;
183
184	imx074_try_fmt(sd, mf);
185
186	priv->fmt = imx074_find_datafmt(mf->code);
187
188	return 0;
189	}
190
191	static int imx074_g_fmt(struct v4l2_subdev *sd,
192	struct v4l2_mbus_framefmt *mf)
193	{
194	struct i2c_client *client = v4l2_get_subdevdata(sd);
195	struct imx074 *priv = to_imx074(client);
196
197	const struct imx074_datafmt *fmt = priv->fmt;
198
199	mf->code = fmt->code;
200	mf->colorspace = fmt->colorspace;
201	mf->width = IMX074_WIDTH;
202	mf->height = IMX074_HEIGHT;
203	mf->field = V4L2_FIELD_NONE;
204
205	return 0;
206	}
207
208	static int imx074_g_crop(struct v4l2_subdev sd, struct v4l2_crop a)
209	{
210	struct v4l2_rect *rect = &a->c;
211
212	a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
213	rect->top = 0;
214	rect->left = 0;
215	rect->width = IMX074_WIDTH;
216	rect->height = IMX074_HEIGHT;
217
218	return 0;
219	}
220
221	static int imx074_cropcap(struct v4l2_subdev sd, struct v4l2_cropcap a)
222	{
223	a->bounds.left = 0;
224	a->bounds.top = 0;
225	a->bounds.width = IMX074_WIDTH;
226	a->bounds.height = IMX074_HEIGHT;
227	a->defrect = a->bounds;
228	a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
229	a->pixelaspect.numerator = 1;
230	a->pixelaspect.denominator = 1;
231
232	return 0;
233	}
234
235	static int imx074_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
236	enum v4l2_mbus_pixelcode *code)
237	{
238	if ((unsigned int)index >= ARRAY_SIZE(imx074_colour_fmts))
239	return -EINVAL;
240
241	*code = imx074_colour_fmts[index].code;
242	return 0;
243	}
244
245	static int imx074_s_stream(struct v4l2_subdev *sd, int enable)
246	{
247	struct i2c_client *client = v4l2_get_subdevdata(sd);
248
249	/* MODE_SELECT: stream or standby */
250	return reg_write(client, MODE_SELECT, !!enable);
251	}
252
253	static int imx074_g_chip_ident(struct v4l2_subdev *sd,
254	struct v4l2_dbg_chip_ident *id)
255	{
256	struct i2c_client *client = v4l2_get_subdevdata(sd);
257
258	if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
259	return -EINVAL;
260
261	if (id->match.addr != client->addr)
262	return -ENODEV;
263
264	id->ident = V4L2_IDENT_IMX074;
265	id->revision = 0;
266
267	return 0;
268	}
269
270	static struct v4l2_subdev_video_ops imx074_subdev_video_ops = {
271	.s_stream = imx074_s_stream,
272	.s_mbus_fmt = imx074_s_fmt,
273	.g_mbus_fmt = imx074_g_fmt,
274	.try_mbus_fmt = imx074_try_fmt,
275	.enum_mbus_fmt = imx074_enum_fmt,
276	.g_crop = imx074_g_crop,
277	.cropcap = imx074_cropcap,
278	};
279
280	static struct v4l2_subdev_core_ops imx074_subdev_core_ops = {
281	.g_chip_ident = imx074_g_chip_ident,
282	};
283
284	static struct v4l2_subdev_ops imx074_subdev_ops = {
285	.core = &imx074_subdev_core_ops,
286	.video = &imx074_subdev_video_ops,
287	};
288
289	/*
290	* We have to provide soc-camera operations, but we don't have anything to say
291	* there. The MIPI CSI2 driver will provide .query_bus_param and .set_bus_param
292	*/
293	static unsigned long imx074_query_bus_param(struct soc_camera_device *icd)
294	{
295	return 0;
296	}
297
298	static int imx074_set_bus_param(struct soc_camera_device *icd,
299	unsigned long flags)
300	{
3e31f2b9	301	return -EINVAL;
67826235 GL	302	}
	303
	304	static struct soc_camera_ops imx074_ops = {
	305	.query_bus_param = imx074_query_bus_param,
	306	.set_bus_param = imx074_set_bus_param,
	307	};
	308
	309	static int imx074_video_probe(struct soc_camera_device *icd,
	310	struct i2c_client *client)
	311	{
	312	int ret;
	313	u16 id;
	314
	315	/* Read sensor Model ID */
	316	ret = reg_read(client, 0);
	317	if (ret < 0)
	318	return ret;
	319
	320	id = ret << 8;
	321
	322	ret = reg_read(client, 1);
	323	if (ret < 0)
	324	return ret;
	325
	326	id \|= ret;
	327
	328	dev_info(&client->dev, "Chip ID 0x%04x detected\n", id);
	329
	330	if (id != 0x74)
	331	return -ENODEV;
	332
	333	/* PLL Setting EXTCLK=24MHz, 22.5times */
	334	reg_write(client, PLL_MULTIPLIER, 0x2D);
	335	reg_write(client, PRE_PLL_CLK_DIV, 0x02);
	336	reg_write(client, PLSTATIM, 0x4B);
	337
	338	/* 2-lane mode */
	339	reg_write(client, 0x3024, 0x00);
	340
	341	reg_write(client, IMAGE_ORIENTATION, 0x00);
	342
	343	/* select RAW mode:
	344	* 0x08+0x08 = top 8 bits
	345	* 0x0a+0x08 = compressed 8-bits
	346	* 0x0a+0x0a = 10 bits
	347	*/
	348	reg_write(client, 0x0112, 0x08);
	349	reg_write(client, 0x0113, 0x08);
	350
	351	/* Base setting for High frame mode */
	352	reg_write(client, VNDMY_ABLMGSHLMT, 0x80);
	353	reg_write(client, Y_OPBADDR_START_DI, 0x08);
	354	reg_write(client, 0x3015, 0x37);
	355	reg_write(client, 0x301C, 0x01);
	356	reg_write(client, 0x302C, 0x05);
	357	reg_write(client, 0x3031, 0x26);
	358	reg_write(client, 0x3041, 0x60);
	359	reg_write(client, 0x3051, 0x24);
	360	reg_write(client, 0x3053, 0x34);
	361	reg_write(client, 0x3057, 0xC0);
	362	reg_write(client, 0x305C, 0x09);
	363	reg_write(client, 0x305D, 0x07);
	364	reg_write(client, 0x3060, 0x30);
	365	reg_write(client, 0x3065, 0x00);
366	reg_write(client, 0x30AA, 0x08);
367	reg_write(client, 0x30AB, 0x1C);
368	reg_write(client, 0x30B0, 0x32);
369	reg_write(client, 0x30B2, 0x83);
370	reg_write(client, 0x30D3, 0x04);
371	reg_write(client, 0x3106, 0x78);
372	reg_write(client, 0x310C, 0x82);
373	reg_write(client, 0x3304, 0x05);
374	reg_write(client, 0x3305, 0x04);
375	reg_write(client, 0x3306, 0x11);
376	reg_write(client, 0x3307, 0x02);
377	reg_write(client, 0x3308, 0x0C);
378	reg_write(client, 0x3309, 0x06);
379	reg_write(client, 0x330A, 0x08);
380	reg_write(client, 0x330B, 0x04);
381	reg_write(client, 0x330C, 0x08);
382	reg_write(client, 0x330D, 0x06);
383	reg_write(client, 0x330E, 0x01);
384	reg_write(client, 0x3381, 0x00);
385
386	/* V : 1/2V-addition (1,3), H : 1/2H-averaging (1,3) -> Full HD */
387	/* 1608 = 1560 + 48 (black lines) */
388	reg_write(client, FRAME_LENGTH_LINES_HI, 0x06);
389	reg_write(client, FRAME_LENGTH_LINES_LO, 0x48);
390	reg_write(client, YADDR_START, 0x00);
391	reg_write(client, YADDR_END, 0x2F);
392	/* 0x838 == 2104 */
393	reg_write(client, X_OUTPUT_SIZE_MSB, 0x08);
394	reg_write(client, X_OUTPUT_SIZE_LSB, 0x38);
395	/* 0x618 == 1560 */
396	reg_write(client, Y_OUTPUT_SIZE_MSB, 0x06);
397	reg_write(client, Y_OUTPUT_SIZE_LSB, 0x18);
398	reg_write(client, X_EVEN_INC, 0x01);
399	reg_write(client, X_ODD_INC, 0x03);
400	reg_write(client, Y_EVEN_INC, 0x01);
401	reg_write(client, Y_ODD_INC, 0x03);
402	reg_write(client, HMODEADD, 0x00);
403	reg_write(client, VMODEADD, 0x16);
404	reg_write(client, VAPPLINE_START, 0x24);
405	reg_write(client, VAPPLINE_END, 0x53);
406	reg_write(client, SHUTTER, 0x00);
407	reg_write(client, HADDAVE, 0x80);
408
409	reg_write(client, LANESEL, 0x00);
410
411	reg_write(client, GROUPED_PARAMETER_HOLD, 0x00); /* off */
412
413	return 0;
414	}
415
416	static int imx074_probe(struct i2c_client *client,
417	const struct i2c_device_id *did)
418	{
419	struct imx074 *priv;
420	struct soc_camera_device *icd = client->dev.platform_data;
421	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
422	struct soc_camera_link *icl;
423	int ret;
424
425	if (!icd) {
426	dev_err(&client->dev, "IMX074: missing soc-camera data!\n");
427	return -EINVAL;
428	}
429
430	icl = to_soc_camera_link(icd);
431	if (!icl) {
432	dev_err(&client->dev, "IMX074: missing platform data!\n");
433	return -EINVAL;
434	}
435
436	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
437	dev_warn(&adapter->dev,
438	"I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n");
439	return -EIO;
440	}
441
442	priv = kzalloc(sizeof(struct imx074), GFP_KERNEL);
443	if (!priv)
444	return -ENOMEM;
445
446	v4l2_i2c_subdev_init(&priv->subdev, client, &imx074_subdev_ops);
447
448	icd->ops = &imx074_ops;
449	priv->fmt = &imx074_colour_fmts[0];
450
451	ret = imx074_video_probe(icd, client);
452	if (ret < 0) {
453	icd->ops = NULL;
67826235 GL	454	kfree(priv);
	455	return ret;
	456	}
	457
	458	return ret;
	459	}
	460
	461	static int imx074_remove(struct i2c_client *client)
	462	{
	463	struct imx074 *priv = to_imx074(client);
	464	struct soc_camera_device *icd = client->dev.platform_data;
	465	struct soc_camera_link *icl = to_soc_camera_link(icd);
	466
	467	icd->ops = NULL;
	468	if (icl->free_bus)
	469	icl->free_bus(icl);
67826235 GL	470	kfree(priv);
	471
	472	return 0;
	473	}
	474
	475	static const struct i2c_device_id imx074_id[] = {
	476	{ "imx074", 0 },
	477	{ }
	478	};
	479	MODULE_DEVICE_TABLE(i2c, imx074_id);
	480
	481	static struct i2c_driver imx074_i2c_driver = {
	482	.driver = {
	483	.name = "imx074",
	484	},
	485	.probe = imx074_probe,
	486	.remove = imx074_remove,
	487	.id_table = imx074_id,
	488	};
	489
	490	static int __init imx074_mod_init(void)
	491	{
	492	return i2c_add_driver(&imx074_i2c_driver);
	493	}
	494
	495	static void __exit imx074_mod_exit(void)
	496	{
	497	i2c_del_driver(&imx074_i2c_driver);
	498	}
	499
	500	module_init(imx074_mod_init);
	501	module_exit(imx074_mod_exit);
	502
	503	MODULE_DESCRIPTION("Sony IMX074 Camera driver");
	504	MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
	505	MODULE_LICENSE("GPL v2");