[deliverable/linux.git] / drivers / media / video / indycam.c

/*
 *  indycam.c - Silicon Graphics IndyCam digital camera driver
 *
 *  Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
 *  Copyright (C) 2004,2005 Mikael Nousiainen <tmnousia@cc.hut.fi>
 *
 *  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/errno.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/major.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/slab.h>

/* IndyCam decodes stream of photons into digital image representation ;-) */
#include <linux/videodev2.h>
#include <linux/i2c.h>
#include <media/v4l2-device.h>
#include <media/v4l2-chip-ident.h>
#include <media/v4l2-i2c-drv.h>

#include "indycam.h"

#define INDYCAM_MODULE_VERSION "0.0.5"

MODULE_DESCRIPTION("SGI IndyCam driver");
MODULE_VERSION(INDYCAM_MODULE_VERSION);
MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
MODULE_LICENSE("GPL");


// #define INDYCAM_DEBUG

#ifdef INDYCAM_DEBUG
#define dprintk(x...) printk("IndyCam: " x);
#define indycam_regdump(client) indycam_regdump_debug(client)
#else
#define dprintk(x...)
#define indycam_regdump(client)
#endif

struct indycam {
	struct v4l2_subdev sd;
	u8 version;
};

static inline struct indycam *to_indycam(struct v4l2_subdev *sd)
{
	return container_of(sd, struct indycam, sd);
}

static const u8 initseq[] = {
	INDYCAM_CONTROL_AGCENA,		/* INDYCAM_CONTROL */
	INDYCAM_SHUTTER_60,		/* INDYCAM_SHUTTER */
	INDYCAM_GAIN_DEFAULT,		/* INDYCAM_GAIN */
	0x00,				/* INDYCAM_BRIGHTNESS (read-only) */
	INDYCAM_RED_BALANCE_DEFAULT,	/* INDYCAM_RED_BALANCE */
	INDYCAM_BLUE_BALANCE_DEFAULT,	/* INDYCAM_BLUE_BALANCE */
	INDYCAM_RED_SATURATION_DEFAULT,	/* INDYCAM_RED_SATURATION */
	INDYCAM_BLUE_SATURATION_DEFAULT,/* INDYCAM_BLUE_SATURATION */
};

/* IndyCam register handling */

static int indycam_read_reg(struct v4l2_subdev *sd, u8 reg, u8 *value)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	int ret;

	if (reg == INDYCAM_REG_RESET) {
		dprintk("indycam_read_reg(): "
			"skipping write-only register %d\n", reg);
		*value = 0;
		return 0;
	}

	ret = i2c_smbus_read_byte_data(client, reg);

	if (ret < 0) {
		printk(KERN_ERR "IndyCam: indycam_read_reg(): read failed, "
		       "register = 0x%02x\n", reg);
		return ret;
	}

	*value = (u8)ret;

	return 0;
}

static int indycam_write_reg(struct v4l2_subdev *sd, u8 reg, u8 value)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	int err;

	if (reg == INDYCAM_REG_BRIGHTNESS || reg == INDYCAM_REG_VERSION) {
		dprintk("indycam_write_reg(): "
			"skipping read-only register %d\n", reg);
		return 0;
	}

	dprintk("Writing Reg %d = 0x%02x\n", reg, value);
	err = i2c_smbus_write_byte_data(client, reg, value);

	if (err) {
		printk(KERN_ERR "IndyCam: indycam_write_reg(): write failed, "
		       "register = 0x%02x, value = 0x%02x\n", reg, value);
	}
	return err;
}

static int indycam_write_block(struct v4l2_subdev *sd, u8 reg,
			       u8 length, u8 *data)
{
	int i, err;

	for (i = 0; i < length; i++) {
		err = indycam_write_reg(sd, reg + i, data[i]);
		if (err)
			return err;
	}

	return 0;
}

/* Helper functions */

#ifdef INDYCAM_DEBUG
static void indycam_regdump_debug(struct v4l2_subdev *sd)
{
	int i;
	u8 val;

	for (i = 0; i < 9; i++) {
		indycam_read_reg(sd, i, &val);
		dprintk("Reg %d = 0x%02x\n", i, val);
	}
}
#endif

static int indycam_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
	struct indycam *camera = to_indycam(sd);
	u8 reg;
	int ret = 0;

	switch (ctrl->id) {
	case V4L2_CID_AUTOGAIN:
	case V4L2_CID_AUTO_WHITE_BALANCE:
		ret = indycam_read_reg(sd, INDYCAM_REG_CONTROL, &reg);
		if (ret)
			return -EIO;
		if (ctrl->id == V4L2_CID_AUTOGAIN)
			ctrl->value = (reg & INDYCAM_CONTROL_AGCENA)
				? 1 : 0;
		else
			ctrl->value = (reg & INDYCAM_CONTROL_AWBCTL)
				? 1 : 0;
		break;
	case V4L2_CID_EXPOSURE:
		ret = indycam_read_reg(sd, INDYCAM_REG_SHUTTER, &reg);
		if (ret)
			return -EIO;
		ctrl->value = ((s32)reg == 0x00) ? 0xff : ((s32)reg - 1);
		break;
	case V4L2_CID_GAIN:
		ret = indycam_read_reg(sd, INDYCAM_REG_GAIN, &reg);
		if (ret)
			return -EIO;
		ctrl->value = (s32)reg;
		break;
	case V4L2_CID_RED_BALANCE:
		ret = indycam_read_reg(sd, INDYCAM_REG_RED_BALANCE, &reg);
		if (ret)
			return -EIO;
		ctrl->value = (s32)reg;
		break;
	case V4L2_CID_BLUE_BALANCE:
		ret = indycam_read_reg(sd, INDYCAM_REG_BLUE_BALANCE, &reg);
		if (ret)
			return -EIO;
		ctrl->value = (s32)reg;
		break;
	case INDYCAM_CONTROL_RED_SATURATION:
		ret = indycam_read_reg(sd,
				       INDYCAM_REG_RED_SATURATION, &reg);
		if (ret)
			return -EIO;
		ctrl->value = (s32)reg;
		break;
	case INDYCAM_CONTROL_BLUE_SATURATION:
		ret = indycam_read_reg(sd,
				       INDYCAM_REG_BLUE_SATURATION, &reg);
		if (ret)
			return -EIO;
		ctrl->value = (s32)reg;
		break;
	case V4L2_CID_GAMMA:
		if (camera->version == CAMERA_VERSION_MOOSE) {
			ret = indycam_read_reg(sd,
					       INDYCAM_REG_GAMMA, &reg);
			if (ret)
				return -EIO;
			ctrl->value = (s32)reg;
		} else {
			ctrl->value = INDYCAM_GAMMA_DEFAULT;
		}
		break;
	default:
		ret = -EINVAL;
	}

	return ret;
}

static int indycam_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
	struct indycam *camera = to_indycam(sd);
	u8 reg;
	int ret = 0;

	switch (ctrl->id) {
	case V4L2_CID_AUTOGAIN:
	case V4L2_CID_AUTO_WHITE_BALANCE:
		ret = indycam_read_reg(sd, INDYCAM_REG_CONTROL, &reg);
		if (ret)
			break;

		if (ctrl->id == V4L2_CID_AUTOGAIN) {
			if (ctrl->value)
				reg |= INDYCAM_CONTROL_AGCENA;
			else
				reg &= ~INDYCAM_CONTROL_AGCENA;
		} else {
			if (ctrl->value)
				reg |= INDYCAM_CONTROL_AWBCTL;
			else
				reg &= ~INDYCAM_CONTROL_AWBCTL;
		}

		ret = indycam_write_reg(sd, INDYCAM_REG_CONTROL, reg);
		break;
	case V4L2_CID_EXPOSURE:
		reg = (ctrl->value == 0xff) ? 0x00 : (ctrl->value + 1);
		ret = indycam_write_reg(sd, INDYCAM_REG_SHUTTER, reg);
		break;
	case V4L2_CID_GAIN:
		ret = indycam_write_reg(sd, INDYCAM_REG_GAIN, ctrl->value);
		break;
	case V4L2_CID_RED_BALANCE:
		ret = indycam_write_reg(sd, INDYCAM_REG_RED_BALANCE,
					ctrl->value);
		break;
	case V4L2_CID_BLUE_BALANCE:
		ret = indycam_write_reg(sd, INDYCAM_REG_BLUE_BALANCE,
					ctrl->value);
		break;
	case INDYCAM_CONTROL_RED_SATURATION:
		ret = indycam_write_reg(sd, INDYCAM_REG_RED_SATURATION,
					ctrl->value);
		break;
	case INDYCAM_CONTROL_BLUE_SATURATION:
		ret = indycam_write_reg(sd, INDYCAM_REG_BLUE_SATURATION,
					ctrl->value);
		break;
	case V4L2_CID_GAMMA:
		if (camera->version == CAMERA_VERSION_MOOSE) {
			ret = indycam_write_reg(sd, INDYCAM_REG_GAMMA,
						ctrl->value);
		}
		break;
	default:
		ret = -EINVAL;
	}

	return ret;
}

/* I2C-interface */

static int indycam_g_chip_ident(struct v4l2_subdev *sd,
		struct v4l2_dbg_chip_ident *chip)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	struct indycam *camera = to_indycam(sd);

	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_INDYCAM,
		       camera->version);
}

/* ----------------------------------------------------------------------- */

static const struct v4l2_subdev_core_ops indycam_core_ops = {
	.g_chip_ident = indycam_g_chip_ident,
	.g_ctrl = indycam_g_ctrl,
	.s_ctrl = indycam_s_ctrl,
};

static const struct v4l2_subdev_ops indycam_ops = {
	.core = &indycam_core_ops,
};

static int indycam_probe(struct i2c_client *client,
			  const struct i2c_device_id *id)
{
	int err = 0;
	struct indycam *camera;
	struct v4l2_subdev *sd;

	v4l_info(client, "chip found @ 0x%x (%s)\n",
			client->addr << 1, client->adapter->name);

	camera = kzalloc(sizeof(struct indycam), GFP_KERNEL);
	if (!camera)
		return -ENOMEM;

	sd = &camera->sd;
	v4l2_i2c_subdev_init(sd, client, &indycam_ops);

	camera->version = i2c_smbus_read_byte_data(client,
						   INDYCAM_REG_VERSION);
	if (camera->version != CAMERA_VERSION_INDY &&
	    camera->version != CAMERA_VERSION_MOOSE) {
		kfree(camera);
		return -ENODEV;
	}

	printk(KERN_INFO "IndyCam v%d.%d detected\n",
	       INDYCAM_VERSION_MAJOR(camera->version),
	       INDYCAM_VERSION_MINOR(camera->version));

	indycam_regdump(sd);

	// initialize
	err = indycam_write_block(sd, 0, sizeof(initseq), (u8 *)&initseq);
	if (err) {
		printk(KERN_ERR "IndyCam initialization failed\n");
		kfree(camera);
		return -EIO;
	}

	indycam_regdump(sd);

	// white balance
	err = indycam_write_reg(sd, INDYCAM_REG_CONTROL,
			  INDYCAM_CONTROL_AGCENA | INDYCAM_CONTROL_AWBCTL);
	if (err) {
		printk(KERN_ERR "IndyCam: White balancing camera failed\n");
		kfree(camera);
		return -EIO;
	}

	indycam_regdump(sd);

	printk(KERN_INFO "IndyCam initialized\n");

	return 0;
}

static int indycam_remove(struct i2c_client *client)
{
	struct v4l2_subdev *sd = i2c_get_clientdata(client);

	v4l2_device_unregister_subdev(sd);
	kfree(to_indycam(sd));
	return 0;
}

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

static struct v4l2_i2c_driver_data v4l2_i2c_data = {
	.name = "indycam",
	.probe = indycam_probe,
	.remove = indycam_remove,
	.id_table = indycam_id,
};
Commit	Line	Data
d203a7ec RB	1	/*
	2	* indycam.c - Silicon Graphics IndyCam digital camera driver
	3	*
	4	* Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
	5	* Copyright (C) 2004,2005 Mikael Nousiainen <tmnousia@cc.hut.fi>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*/
	11
d203a7ec RB	12	#include <linux/delay.h>
	13	#include <linux/errno.h>
	14	#include <linux/fs.h>
495515b3	15	#include <linux/init.h>
d203a7ec RB	16	#include <linux/kernel.h>
d203a7ec RB	17	#include <linux/major.h>
495515b3	18	#include <linux/module.h>
d203a7ec	19	#include <linux/mm.h>
495515b3	20	#include <linux/slab.h>
d203a7ec	21
d203a7ec	22	/* IndyCam decodes stream of photons into digital image representation ;-) */
cf4e9484	23	#include <linux/videodev2.h>
d203a7ec	24	#include <linux/i2c.h>
2b80a191 HV	25	#include <media/v4l2-device.h>
2b80a191 HV	26	#include <media/v4l2-chip-ident.h>
a0720d3b	27	#include <media/v4l2-i2c-drv.h>
d203a7ec RB	28
	29	#include "indycam.h"
	30
a637a114	31	#define INDYCAM_MODULE_VERSION "0.0.5"
d203a7ec RB	32
	33	MODULE_DESCRIPTION("SGI IndyCam driver");
	34	MODULE_VERSION(INDYCAM_MODULE_VERSION);
	35	MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
	36	MODULE_LICENSE("GPL");
	37
cf4e9484	38
a637a114 LM	39	// #define INDYCAM_DEBUG
a637a114 LM	40
d203a7ec RB	41	#ifdef INDYCAM_DEBUG
	42	#define dprintk(x...) printk("IndyCam: " x);
	43	#define indycam_regdump(client) indycam_regdump_debug(client)
	44	#else
	45	#define dprintk(x...)
	46	#define indycam_regdump(client)
	47	#endif
	48
d203a7ec	49	struct indycam {
2b80a191	50	struct v4l2_subdev sd;
a637a114	51	u8 version;
d203a7ec RB	52	};
d203a7ec RB	53
2b80a191 HV	54	static inline struct indycam to_indycam(struct v4l2_subdev sd)
	55	{
	56	return container_of(sd, struct indycam, sd);
	57	}
	58
a637a114	59	static const u8 initseq[] = {
d203a7ec	60	INDYCAM_CONTROL_AGCENA, /* INDYCAM_CONTROL */
a637a114	61	INDYCAM_SHUTTER_60, /* INDYCAM_SHUTTER */
d203a7ec RB	62	INDYCAM_GAIN_DEFAULT, /* INDYCAM_GAIN */
	63	0x00, /* INDYCAM_BRIGHTNESS (read-only) */
	64	INDYCAM_RED_BALANCE_DEFAULT, /* INDYCAM_RED_BALANCE */
	65	INDYCAM_BLUE_BALANCE_DEFAULT, /* INDYCAM_BLUE_BALANCE */
	66	INDYCAM_RED_SATURATION_DEFAULT, /* INDYCAM_RED_SATURATION */
	67	INDYCAM_BLUE_SATURATION_DEFAULT,/* INDYCAM_BLUE_SATURATION */
	68	};
	69
	70	/* IndyCam register handling */
	71
2b80a191	72	static int indycam_read_reg(struct v4l2_subdev sd, u8 reg, u8 value)
d203a7ec	73	{
2b80a191	74	struct i2c_client *client = v4l2_get_subdevdata(sd);
d203a7ec RB	75	int ret;
d203a7ec RB	76
a637a114	77	if (reg == INDYCAM_REG_RESET) {
d203a7ec RB	78	dprintk("indycam_read_reg(): "
	79	"skipping write-only register %d\n", reg);
	80	*value = 0;
	81	return 0;
	82	}
	83
	84	ret = i2c_smbus_read_byte_data(client, reg);
a637a114	85
d203a7ec RB	86	if (ret < 0) {
	87	printk(KERN_ERR "IndyCam: indycam_read_reg(): read failed, "
	88	"register = 0x%02x\n", reg);
	89	return ret;
	90	}
	91
a637a114	92	*value = (u8)ret;
d203a7ec RB	93
	94	return 0;
	95	}
	96
2b80a191	97	static int indycam_write_reg(struct v4l2_subdev *sd, u8 reg, u8 value)
d203a7ec	98	{
2b80a191	99	struct i2c_client *client = v4l2_get_subdevdata(sd);
d203a7ec RB	100	int err;
d203a7ec RB	101
2b80a191	102	if (reg == INDYCAM_REG_BRIGHTNESS \|\| reg == INDYCAM_REG_VERSION) {
d203a7ec RB	103	dprintk("indycam_write_reg(): "
	104	"skipping read-only register %d\n", reg);
	105	return 0;
	106	}
	107
	108	dprintk("Writing Reg %d = 0x%02x\n", reg, value);
	109	err = i2c_smbus_write_byte_data(client, reg, value);
a637a114	110
d203a7ec RB	111	if (err) {
	112	printk(KERN_ERR "IndyCam: indycam_write_reg(): write failed, "
	113	"register = 0x%02x, value = 0x%02x\n", reg, value);
	114	}
	115	return err;
	116	}
	117
2b80a191	118	static int indycam_write_block(struct v4l2_subdev *sd, u8 reg,
a637a114	119	u8 length, u8 *data)
d203a7ec	120	{
a637a114	121	int i, err;
d203a7ec	122
a637a114	123	for (i = 0; i < length; i++) {
2b80a191	124	err = indycam_write_reg(sd, reg + i, data[i]);
d203a7ec RB	125	if (err)
	126	return err;
	127	}
	128
	129	return 0;
	130	}
	131
	132	/* Helper functions */
	133
	134	#ifdef INDYCAM_DEBUG
2b80a191	135	static void indycam_regdump_debug(struct v4l2_subdev *sd)
d203a7ec RB	136	{
d203a7ec RB	137	int i;
a637a114	138	u8 val;
d203a7ec RB	139
d203a7ec RB	140	for (i = 0; i < 9; i++) {
2b80a191	141	indycam_read_reg(sd, i, &val);
d203a7ec RB	142	dprintk("Reg %d = 0x%02x\n", i, val);
	143	}
	144	}
	145	#endif
	146
2b80a191	147	static int indycam_g_ctrl(struct v4l2_subdev sd, struct v4l2_control ctrl)
d203a7ec	148	{
2b80a191	149	struct indycam *camera = to_indycam(sd);
a637a114 LM	150	u8 reg;
	151	int ret = 0;
	152
cf4e9484 HV	153	switch (ctrl->id) {
	154	case V4L2_CID_AUTOGAIN:
	155	case V4L2_CID_AUTO_WHITE_BALANCE:
2b80a191	156	ret = indycam_read_reg(sd, INDYCAM_REG_CONTROL, &reg);
a637a114 LM	157	if (ret)
a637a114 LM	158	return -EIO;
cf4e9484	159	if (ctrl->id == V4L2_CID_AUTOGAIN)
a637a114 LM	160	ctrl->value = (reg & INDYCAM_CONTROL_AGCENA)
	161	? 1 : 0;
	162	else
	163	ctrl->value = (reg & INDYCAM_CONTROL_AWBCTL)
	164	? 1 : 0;
	165	break;
cf4e9484	166	case V4L2_CID_EXPOSURE:
2b80a191	167	ret = indycam_read_reg(sd, INDYCAM_REG_SHUTTER, &reg);
a637a114 LM	168	if (ret)
	169	return -EIO;
	170	ctrl->value = ((s32)reg == 0x00) ? 0xff : ((s32)reg - 1);
	171	break;
cf4e9484	172	case V4L2_CID_GAIN:
2b80a191	173	ret = indycam_read_reg(sd, INDYCAM_REG_GAIN, &reg);
a637a114 LM	174	if (ret)
	175	return -EIO;
	176	ctrl->value = (s32)reg;
	177	break;
cf4e9484	178	case V4L2_CID_RED_BALANCE:
2b80a191	179	ret = indycam_read_reg(sd, INDYCAM_REG_RED_BALANCE, &reg);
a637a114 LM	180	if (ret)
	181	return -EIO;
	182	ctrl->value = (s32)reg;
	183	break;
cf4e9484	184	case V4L2_CID_BLUE_BALANCE:
2b80a191	185	ret = indycam_read_reg(sd, INDYCAM_REG_BLUE_BALANCE, &reg);
a637a114 LM	186	if (ret)
	187	return -EIO;
	188	ctrl->value = (s32)reg;
	189	break;
	190	case INDYCAM_CONTROL_RED_SATURATION:
2b80a191	191	ret = indycam_read_reg(sd,
a637a114 LM	192	INDYCAM_REG_RED_SATURATION, &reg);
	193	if (ret)
	194	return -EIO;
	195	ctrl->value = (s32)reg;
	196	break;
	197	case INDYCAM_CONTROL_BLUE_SATURATION:
2b80a191	198	ret = indycam_read_reg(sd,
a637a114 LM	199	INDYCAM_REG_BLUE_SATURATION, &reg);
	200	if (ret)
	201	return -EIO;
	202	ctrl->value = (s32)reg;
	203	break;
cf4e9484	204	case V4L2_CID_GAMMA:
a637a114	205	if (camera->version == CAMERA_VERSION_MOOSE) {
2b80a191	206	ret = indycam_read_reg(sd,
a637a114 LM	207	INDYCAM_REG_GAMMA, &reg);
	208	if (ret)
	209	return -EIO;
	210	ctrl->value = (s32)reg;
	211	} else {
	212	ctrl->value = INDYCAM_GAMMA_DEFAULT;
	213	}
	214	break;
	215	default:
	216	ret = -EINVAL;
	217	}
d203a7ec	218
a637a114	219	return ret;
d203a7ec RB	220	}
d203a7ec RB	221
2b80a191	222	static int indycam_s_ctrl(struct v4l2_subdev sd, struct v4l2_control ctrl)
d203a7ec	223	{
2b80a191	224	struct indycam *camera = to_indycam(sd);
a637a114 LM	225	u8 reg;
	226	int ret = 0;
	227
cf4e9484 HV	228	switch (ctrl->id) {
	229	case V4L2_CID_AUTOGAIN:
	230	case V4L2_CID_AUTO_WHITE_BALANCE:
2b80a191	231	ret = indycam_read_reg(sd, INDYCAM_REG_CONTROL, &reg);
a637a114 LM	232	if (ret)
a637a114 LM	233	break;
d203a7ec	234
cf4e9484	235	if (ctrl->id == V4L2_CID_AUTOGAIN) {
a637a114 LM	236	if (ctrl->value)
	237	reg \|= INDYCAM_CONTROL_AGCENA;
	238	else
	239	reg &= ~INDYCAM_CONTROL_AGCENA;
	240	} else {
	241	if (ctrl->value)
	242	reg \|= INDYCAM_CONTROL_AWBCTL;
	243	else
	244	reg &= ~INDYCAM_CONTROL_AWBCTL;
	245	}
	246
2b80a191	247	ret = indycam_write_reg(sd, INDYCAM_REG_CONTROL, reg);
a637a114	248	break;
cf4e9484	249	case V4L2_CID_EXPOSURE:
a637a114	250	reg = (ctrl->value == 0xff) ? 0x00 : (ctrl->value + 1);
2b80a191	251	ret = indycam_write_reg(sd, INDYCAM_REG_SHUTTER, reg);
a637a114	252	break;
cf4e9484	253	case V4L2_CID_GAIN:
2b80a191	254	ret = indycam_write_reg(sd, INDYCAM_REG_GAIN, ctrl->value);
a637a114	255	break;
cf4e9484	256	case V4L2_CID_RED_BALANCE:
2b80a191	257	ret = indycam_write_reg(sd, INDYCAM_REG_RED_BALANCE,
a637a114 LM	258	ctrl->value);
a637a114 LM	259	break;
cf4e9484	260	case V4L2_CID_BLUE_BALANCE:
2b80a191	261	ret = indycam_write_reg(sd, INDYCAM_REG_BLUE_BALANCE,
a637a114 LM	262	ctrl->value);
	263	break;
	264	case INDYCAM_CONTROL_RED_SATURATION:
2b80a191	265	ret = indycam_write_reg(sd, INDYCAM_REG_RED_SATURATION,
a637a114 LM	266	ctrl->value);
	267	break;
	268	case INDYCAM_CONTROL_BLUE_SATURATION:
2b80a191	269	ret = indycam_write_reg(sd, INDYCAM_REG_BLUE_SATURATION,
a637a114 LM	270	ctrl->value);
a637a114 LM	271	break;
cf4e9484	272	case V4L2_CID_GAMMA:
a637a114	273	if (camera->version == CAMERA_VERSION_MOOSE) {
2b80a191	274	ret = indycam_write_reg(sd, INDYCAM_REG_GAMMA,
a637a114 LM	275	ctrl->value);
	276	}
	277	break;
	278	default:
	279	ret = -EINVAL;
d203a7ec	280	}
d203a7ec	281
a637a114	282	return ret;
d203a7ec RB	283	}
	284
	285	/* I2C-interface */
	286
2b80a191 HV	287	static int indycam_g_chip_ident(struct v4l2_subdev *sd,
2b80a191 HV	288	struct v4l2_dbg_chip_ident *chip)
cf4e9484	289	{
2b80a191 HV	290	struct i2c_client *client = v4l2_get_subdevdata(sd);
2b80a191 HV	291	struct indycam *camera = to_indycam(sd);
cf4e9484	292
2b80a191 HV	293	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_INDYCAM,
	294	camera->version);
	295	}
cf4e9484	296
2b80a191 HV	297	/* ----------------------------------------------------------------------- */
	298
	299	static const struct v4l2_subdev_core_ops indycam_core_ops = {
	300	.g_chip_ident = indycam_g_chip_ident,
	301	.g_ctrl = indycam_g_ctrl,
	302	.s_ctrl = indycam_s_ctrl,
	303	};
	304
	305	static const struct v4l2_subdev_ops indycam_ops = {
	306	.core = &indycam_core_ops,
	307	};
	308
cf4e9484 HV	309	static int indycam_probe(struct i2c_client *client,
cf4e9484 HV	310	const struct i2c_device_id *id)
d203a7ec RB	311	{
	312	int err = 0;
	313	struct indycam *camera;
2b80a191	314	struct v4l2_subdev *sd;
d203a7ec	315
cf4e9484 HV	316	v4l_info(client, "chip found @ 0x%x (%s)\n",
cf4e9484 HV	317	client->addr << 1, client->adapter->name);
d203a7ec	318
7408187d	319	camera = kzalloc(sizeof(struct indycam), GFP_KERNEL);
cf4e9484 HV	320	if (!camera)
cf4e9484 HV	321	return -ENOMEM;
d203a7ec	322
2b80a191 HV	323	sd = &camera->sd;
2b80a191 HV	324	v4l2_i2c_subdev_init(sd, client, &indycam_ops);
d203a7ec	325
a637a114 LM	326	camera->version = i2c_smbus_read_byte_data(client,
a637a114 LM	327	INDYCAM_REG_VERSION);
d203a7ec RB	328	if (camera->version != CAMERA_VERSION_INDY &&
d203a7ec RB	329	camera->version != CAMERA_VERSION_MOOSE) {
cf4e9484 HV	330	kfree(camera);
cf4e9484 HV	331	return -ENODEV;
d203a7ec	332	}
cf4e9484	333
d203a7ec RB	334	printk(KERN_INFO "IndyCam v%d.%d detected\n",
	335	INDYCAM_VERSION_MAJOR(camera->version),
	336	INDYCAM_VERSION_MINOR(camera->version));
	337
2b80a191	338	indycam_regdump(sd);
d203a7ec RB	339
d203a7ec RB	340	// initialize
2b80a191	341	err = indycam_write_block(sd, 0, sizeof(initseq), (u8 *)&initseq);
d203a7ec	342	if (err) {
c84e6036	343	printk(KERN_ERR "IndyCam initialization failed\n");
cf4e9484 HV	344	kfree(camera);
cf4e9484 HV	345	return -EIO;
d203a7ec RB	346	}
d203a7ec RB	347
2b80a191	348	indycam_regdump(sd);
d203a7ec RB	349
d203a7ec RB	350	// white balance
2b80a191	351	err = indycam_write_reg(sd, INDYCAM_REG_CONTROL,
d203a7ec RB	352	INDYCAM_CONTROL_AGCENA \| INDYCAM_CONTROL_AWBCTL);
d203a7ec RB	353	if (err) {
a637a114	354	printk(KERN_ERR "IndyCam: White balancing camera failed\n");
cf4e9484 HV	355	kfree(camera);
cf4e9484 HV	356	return -EIO;
d203a7ec RB	357	}
d203a7ec RB	358
2b80a191	359	indycam_regdump(sd);
d203a7ec RB	360
	361	printk(KERN_INFO "IndyCam initialized\n");
	362
	363	return 0;
d203a7ec RB	364	}
d203a7ec RB	365
cf4e9484	366	static int indycam_remove(struct i2c_client *client)
d203a7ec	367	{
2b80a191	368	struct v4l2_subdev *sd = i2c_get_clientdata(client);
d203a7ec	369
2b80a191 HV	370	v4l2_device_unregister_subdev(sd);
2b80a191 HV	371	kfree(to_indycam(sd));
d203a7ec RB	372	return 0;
	373	}
	374
cf4e9484 HV	375	static const struct i2c_device_id indycam_id[] = {
	376	{ "indycam", 0 },
	377	{ }
	378	};
	379	MODULE_DEVICE_TABLE(i2c, indycam_id);
	380
	381	static struct v4l2_i2c_driver_data v4l2_i2c_data = {
	382	.name = "indycam",
cf4e9484 HV	383	.probe = indycam_probe,
cf4e9484 HV	384	.remove = indycam_remove,
cf4e9484	385	.id_table = indycam_id,
d203a7ec	386	};