[net-next-2.6.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 "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 i2c_driver indycam_driver = {
	.driver = {
		.owner	= THIS_MODULE,
		.name	= "indycam",
	},
	.probe		= indycam_probe,
	.remove		= indycam_remove,
	.id_table	= indycam_id,
};

static __init int init_indycam(void)
{
	return i2c_add_driver(&indycam_driver);
}

static __exit void exit_indycam(void)
{
	i2c_del_driver(&indycam_driver);
}

module_init(init_indycam);
module_exit(exit_indycam);
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>
d203a7ec RB	27
	28	#include "indycam.h"
	29
a637a114	30	#define INDYCAM_MODULE_VERSION "0.0.5"
d203a7ec RB	31
	32	MODULE_DESCRIPTION("SGI IndyCam driver");
	33	MODULE_VERSION(INDYCAM_MODULE_VERSION);
	34	MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
	35	MODULE_LICENSE("GPL");
	36
cf4e9484	37
a637a114 LM	38	// #define INDYCAM_DEBUG
a637a114 LM	39
d203a7ec RB	40	#ifdef INDYCAM_DEBUG
	41	#define dprintk(x...) printk("IndyCam: " x);
	42	#define indycam_regdump(client) indycam_regdump_debug(client)
	43	#else
	44	#define dprintk(x...)
	45	#define indycam_regdump(client)
	46	#endif
	47
d203a7ec	48	struct indycam {
2b80a191	49	struct v4l2_subdev sd;
a637a114	50	u8 version;
d203a7ec RB	51	};
d203a7ec RB	52
2b80a191 HV	53	static inline struct indycam to_indycam(struct v4l2_subdev sd)
	54	{
	55	return container_of(sd, struct indycam, sd);
	56	}
	57
a637a114	58	static const u8 initseq[] = {
d203a7ec	59	INDYCAM_CONTROL_AGCENA, /* INDYCAM_CONTROL */
a637a114	60	INDYCAM_SHUTTER_60, /* INDYCAM_SHUTTER */
d203a7ec RB	61	INDYCAM_GAIN_DEFAULT, /* INDYCAM_GAIN */
	62	0x00, /* INDYCAM_BRIGHTNESS (read-only) */
	63	INDYCAM_RED_BALANCE_DEFAULT, /* INDYCAM_RED_BALANCE */
	64	INDYCAM_BLUE_BALANCE_DEFAULT, /* INDYCAM_BLUE_BALANCE */
	65	INDYCAM_RED_SATURATION_DEFAULT, /* INDYCAM_RED_SATURATION */
	66	INDYCAM_BLUE_SATURATION_DEFAULT,/* INDYCAM_BLUE_SATURATION */
	67	};
	68
	69	/* IndyCam register handling */
	70
2b80a191	71	static int indycam_read_reg(struct v4l2_subdev sd, u8 reg, u8 value)
d203a7ec	72	{
2b80a191	73	struct i2c_client *client = v4l2_get_subdevdata(sd);
d203a7ec RB	74	int ret;
d203a7ec RB	75
a637a114	76	if (reg == INDYCAM_REG_RESET) {
d203a7ec RB	77	dprintk("indycam_read_reg(): "
	78	"skipping write-only register %d\n", reg);
	79	*value = 0;
	80	return 0;
	81	}
	82
	83	ret = i2c_smbus_read_byte_data(client, reg);
a637a114	84
d203a7ec RB	85	if (ret < 0) {
	86	printk(KERN_ERR "IndyCam: indycam_read_reg(): read failed, "
	87	"register = 0x%02x\n", reg);
	88	return ret;
	89	}
	90
a637a114	91	*value = (u8)ret;
d203a7ec RB	92
	93	return 0;
	94	}
	95
2b80a191	96	static int indycam_write_reg(struct v4l2_subdev *sd, u8 reg, u8 value)
d203a7ec	97	{
2b80a191	98	struct i2c_client *client = v4l2_get_subdevdata(sd);
d203a7ec RB	99	int err;
d203a7ec RB	100
2b80a191	101	if (reg == INDYCAM_REG_BRIGHTNESS \|\| reg == INDYCAM_REG_VERSION) {
d203a7ec RB	102	dprintk("indycam_write_reg(): "
	103	"skipping read-only register %d\n", reg);
	104	return 0;
	105	}
	106
	107	dprintk("Writing Reg %d = 0x%02x\n", reg, value);
	108	err = i2c_smbus_write_byte_data(client, reg, value);
a637a114	109
d203a7ec RB	110	if (err) {
	111	printk(KERN_ERR "IndyCam: indycam_write_reg(): write failed, "
	112	"register = 0x%02x, value = 0x%02x\n", reg, value);
	113	}
	114	return err;
	115	}
	116
2b80a191	117	static int indycam_write_block(struct v4l2_subdev *sd, u8 reg,
a637a114	118	u8 length, u8 *data)
d203a7ec	119	{
a637a114	120	int i, err;
d203a7ec	121
a637a114	122	for (i = 0; i < length; i++) {
2b80a191	123	err = indycam_write_reg(sd, reg + i, data[i]);
d203a7ec RB	124	if (err)
	125	return err;
	126	}
	127
	128	return 0;
	129	}
	130
	131	/* Helper functions */
	132
	133	#ifdef INDYCAM_DEBUG
2b80a191	134	static void indycam_regdump_debug(struct v4l2_subdev *sd)
d203a7ec RB	135	{
d203a7ec RB	136	int i;
a637a114	137	u8 val;
d203a7ec RB	138
d203a7ec RB	139	for (i = 0; i < 9; i++) {
2b80a191	140	indycam_read_reg(sd, i, &val);
d203a7ec RB	141	dprintk("Reg %d = 0x%02x\n", i, val);
	142	}
	143	}
	144	#endif
	145
2b80a191	146	static int indycam_g_ctrl(struct v4l2_subdev sd, struct v4l2_control ctrl)
d203a7ec	147	{
2b80a191	148	struct indycam *camera = to_indycam(sd);
a637a114 LM	149	u8 reg;
	150	int ret = 0;
	151
cf4e9484 HV	152	switch (ctrl->id) {
	153	case V4L2_CID_AUTOGAIN:
	154	case V4L2_CID_AUTO_WHITE_BALANCE:
2b80a191	155	ret = indycam_read_reg(sd, INDYCAM_REG_CONTROL, &reg);
a637a114 LM	156	if (ret)
a637a114 LM	157	return -EIO;
cf4e9484	158	if (ctrl->id == V4L2_CID_AUTOGAIN)
a637a114 LM	159	ctrl->value = (reg & INDYCAM_CONTROL_AGCENA)
	160	? 1 : 0;
	161	else
	162	ctrl->value = (reg & INDYCAM_CONTROL_AWBCTL)
	163	? 1 : 0;
	164	break;
cf4e9484	165	case V4L2_CID_EXPOSURE:
2b80a191	166	ret = indycam_read_reg(sd, INDYCAM_REG_SHUTTER, &reg);
a637a114 LM	167	if (ret)
	168	return -EIO;
	169	ctrl->value = ((s32)reg == 0x00) ? 0xff : ((s32)reg - 1);
	170	break;
cf4e9484	171	case V4L2_CID_GAIN:
2b80a191	172	ret = indycam_read_reg(sd, INDYCAM_REG_GAIN, &reg);
a637a114 LM	173	if (ret)
	174	return -EIO;
	175	ctrl->value = (s32)reg;
	176	break;
cf4e9484	177	case V4L2_CID_RED_BALANCE:
2b80a191	178	ret = indycam_read_reg(sd, INDYCAM_REG_RED_BALANCE, &reg);
a637a114 LM	179	if (ret)
	180	return -EIO;
	181	ctrl->value = (s32)reg;
	182	break;
cf4e9484	183	case V4L2_CID_BLUE_BALANCE:
2b80a191	184	ret = indycam_read_reg(sd, INDYCAM_REG_BLUE_BALANCE, &reg);
a637a114 LM	185	if (ret)
	186	return -EIO;
	187	ctrl->value = (s32)reg;
	188	break;
	189	case INDYCAM_CONTROL_RED_SATURATION:
2b80a191	190	ret = indycam_read_reg(sd,
a637a114 LM	191	INDYCAM_REG_RED_SATURATION, &reg);
	192	if (ret)
	193	return -EIO;
	194	ctrl->value = (s32)reg;
	195	break;
	196	case INDYCAM_CONTROL_BLUE_SATURATION:
2b80a191	197	ret = indycam_read_reg(sd,
a637a114 LM	198	INDYCAM_REG_BLUE_SATURATION, &reg);
	199	if (ret)
	200	return -EIO;
	201	ctrl->value = (s32)reg;
	202	break;
cf4e9484	203	case V4L2_CID_GAMMA:
a637a114	204	if (camera->version == CAMERA_VERSION_MOOSE) {
2b80a191	205	ret = indycam_read_reg(sd,
a637a114 LM	206	INDYCAM_REG_GAMMA, &reg);
	207	if (ret)
	208	return -EIO;
	209	ctrl->value = (s32)reg;
	210	} else {
	211	ctrl->value = INDYCAM_GAMMA_DEFAULT;
	212	}
	213	break;
	214	default:
	215	ret = -EINVAL;
	216	}
d203a7ec	217
a637a114	218	return ret;
d203a7ec RB	219	}
d203a7ec RB	220
2b80a191	221	static int indycam_s_ctrl(struct v4l2_subdev sd, struct v4l2_control ctrl)
d203a7ec	222	{
2b80a191	223	struct indycam *camera = to_indycam(sd);
a637a114 LM	224	u8 reg;
	225	int ret = 0;
	226
cf4e9484 HV	227	switch (ctrl->id) {
	228	case V4L2_CID_AUTOGAIN:
	229	case V4L2_CID_AUTO_WHITE_BALANCE:
2b80a191	230	ret = indycam_read_reg(sd, INDYCAM_REG_CONTROL, &reg);
a637a114 LM	231	if (ret)
a637a114 LM	232	break;
d203a7ec	233
cf4e9484	234	if (ctrl->id == V4L2_CID_AUTOGAIN) {
a637a114 LM	235	if (ctrl->value)
	236	reg \|= INDYCAM_CONTROL_AGCENA;
	237	else
	238	reg &= ~INDYCAM_CONTROL_AGCENA;
	239	} else {
	240	if (ctrl->value)
	241	reg \|= INDYCAM_CONTROL_AWBCTL;
	242	else
	243	reg &= ~INDYCAM_CONTROL_AWBCTL;
	244	}
	245
2b80a191	246	ret = indycam_write_reg(sd, INDYCAM_REG_CONTROL, reg);
a637a114	247	break;
cf4e9484	248	case V4L2_CID_EXPOSURE:
a637a114	249	reg = (ctrl->value == 0xff) ? 0x00 : (ctrl->value + 1);
2b80a191	250	ret = indycam_write_reg(sd, INDYCAM_REG_SHUTTER, reg);
a637a114	251	break;
cf4e9484	252	case V4L2_CID_GAIN:
2b80a191	253	ret = indycam_write_reg(sd, INDYCAM_REG_GAIN, ctrl->value);
a637a114	254	break;
cf4e9484	255	case V4L2_CID_RED_BALANCE:
2b80a191	256	ret = indycam_write_reg(sd, INDYCAM_REG_RED_BALANCE,
a637a114 LM	257	ctrl->value);
a637a114 LM	258	break;
cf4e9484	259	case V4L2_CID_BLUE_BALANCE:
2b80a191	260	ret = indycam_write_reg(sd, INDYCAM_REG_BLUE_BALANCE,
a637a114 LM	261	ctrl->value);
	262	break;
	263	case INDYCAM_CONTROL_RED_SATURATION:
2b80a191	264	ret = indycam_write_reg(sd, INDYCAM_REG_RED_SATURATION,
a637a114 LM	265	ctrl->value);
	266	break;
	267	case INDYCAM_CONTROL_BLUE_SATURATION:
2b80a191	268	ret = indycam_write_reg(sd, INDYCAM_REG_BLUE_SATURATION,
a637a114 LM	269	ctrl->value);
a637a114 LM	270	break;
cf4e9484	271	case V4L2_CID_GAMMA:
a637a114	272	if (camera->version == CAMERA_VERSION_MOOSE) {
2b80a191	273	ret = indycam_write_reg(sd, INDYCAM_REG_GAMMA,
a637a114 LM	274	ctrl->value);
	275	}
	276	break;
	277	default:
	278	ret = -EINVAL;
d203a7ec	279	}
d203a7ec	280
a637a114	281	return ret;
d203a7ec RB	282	}
	283
	284	/* I2C-interface */
	285
2b80a191 HV	286	static int indycam_g_chip_ident(struct v4l2_subdev *sd,
2b80a191 HV	287	struct v4l2_dbg_chip_ident *chip)
cf4e9484	288	{
2b80a191 HV	289	struct i2c_client *client = v4l2_get_subdevdata(sd);
2b80a191 HV	290	struct indycam *camera = to_indycam(sd);
cf4e9484	291
2b80a191 HV	292	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_INDYCAM,
	293	camera->version);
	294	}
cf4e9484	295
2b80a191 HV	296	/* ----------------------------------------------------------------------- */
	297
	298	static const struct v4l2_subdev_core_ops indycam_core_ops = {
	299	.g_chip_ident = indycam_g_chip_ident,
	300	.g_ctrl = indycam_g_ctrl,
	301	.s_ctrl = indycam_s_ctrl,
	302	};
	303
	304	static const struct v4l2_subdev_ops indycam_ops = {
	305	.core = &indycam_core_ops,
	306	};
	307
cf4e9484 HV	308	static int indycam_probe(struct i2c_client *client,
cf4e9484 HV	309	const struct i2c_device_id *id)
d203a7ec RB	310	{
	311	int err = 0;
	312	struct indycam *camera;
2b80a191	313	struct v4l2_subdev *sd;
d203a7ec	314
cf4e9484 HV	315	v4l_info(client, "chip found @ 0x%x (%s)\n",
cf4e9484 HV	316	client->addr << 1, client->adapter->name);
d203a7ec	317
7408187d	318	camera = kzalloc(sizeof(struct indycam), GFP_KERNEL);
cf4e9484 HV	319	if (!camera)
cf4e9484 HV	320	return -ENOMEM;
d203a7ec	321
2b80a191 HV	322	sd = &camera->sd;
2b80a191 HV	323	v4l2_i2c_subdev_init(sd, client, &indycam_ops);
d203a7ec	324
a637a114 LM	325	camera->version = i2c_smbus_read_byte_data(client,
a637a114 LM	326	INDYCAM_REG_VERSION);
d203a7ec RB	327	if (camera->version != CAMERA_VERSION_INDY &&
d203a7ec RB	328	camera->version != CAMERA_VERSION_MOOSE) {
cf4e9484 HV	329	kfree(camera);
cf4e9484 HV	330	return -ENODEV;
d203a7ec	331	}
cf4e9484	332
d203a7ec RB	333	printk(KERN_INFO "IndyCam v%d.%d detected\n",
	334	INDYCAM_VERSION_MAJOR(camera->version),
	335	INDYCAM_VERSION_MINOR(camera->version));
	336
2b80a191	337	indycam_regdump(sd);
d203a7ec RB	338
d203a7ec RB	339	// initialize
2b80a191	340	err = indycam_write_block(sd, 0, sizeof(initseq), (u8 *)&initseq);
d203a7ec	341	if (err) {
c84e6036	342	printk(KERN_ERR "IndyCam initialization failed\n");
cf4e9484 HV	343	kfree(camera);
cf4e9484 HV	344	return -EIO;
d203a7ec RB	345	}
d203a7ec RB	346
2b80a191	347	indycam_regdump(sd);
d203a7ec RB	348
d203a7ec RB	349	// white balance
2b80a191	350	err = indycam_write_reg(sd, INDYCAM_REG_CONTROL,
d203a7ec RB	351	INDYCAM_CONTROL_AGCENA \| INDYCAM_CONTROL_AWBCTL);
d203a7ec RB	352	if (err) {
a637a114	353	printk(KERN_ERR "IndyCam: White balancing camera failed\n");
cf4e9484 HV	354	kfree(camera);
cf4e9484 HV	355	return -EIO;
d203a7ec RB	356	}
d203a7ec RB	357
2b80a191	358	indycam_regdump(sd);
d203a7ec RB	359
	360	printk(KERN_INFO "IndyCam initialized\n");
	361
	362	return 0;
d203a7ec RB	363	}
d203a7ec RB	364
cf4e9484	365	static int indycam_remove(struct i2c_client *client)
d203a7ec	366	{
2b80a191	367	struct v4l2_subdev *sd = i2c_get_clientdata(client);
d203a7ec	368
2b80a191 HV	369	v4l2_device_unregister_subdev(sd);
2b80a191 HV	370	kfree(to_indycam(sd));
d203a7ec RB	371	return 0;
	372	}
	373
cf4e9484 HV	374	static const struct i2c_device_id indycam_id[] = {
	375	{ "indycam", 0 },
	376	{ }
	377	};
	378	MODULE_DEVICE_TABLE(i2c, indycam_id);
	379
9f490cd6 HV	380	static struct i2c_driver indycam_driver = {
	381	.driver = {
	382	.owner = THIS_MODULE,
	383	.name = "indycam",
	384	},
	385	.probe = indycam_probe,
	386	.remove = indycam_remove,
	387	.id_table = indycam_id,
d203a7ec	388	};
9f490cd6 HV	389
	390	static __init int init_indycam(void)
	391	{
	392	return i2c_add_driver(&indycam_driver);
	393	}
	394
	395	static __exit void exit_indycam(void)
	396	{
	397	i2c_del_driver(&indycam_driver);
	398	}
	399
	400	module_init(init_indycam);
	401	module_exit(exit_indycam);