[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>

#include <linux/videodev.h>
/* IndyCam decodes stream of photons into digital image representation ;-) */
#include <linux/video_decoder.h>
#include <linux/i2c.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 i2c_client *client;
	u8 version;
};

static struct i2c_driver i2c_driver_indycam;

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 i2c_client *client, u8 reg, u8 *value)
{
	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 i2c_client *client, u8 reg, u8 value)
{
	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 i2c_client *client, u8 reg,
			       u8 length, u8 *data)
{
	int i, err;

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

	return 0;
}

/* Helper functions */

#ifdef INDYCAM_DEBUG
static void indycam_regdump_debug(struct i2c_client *client)
{
	int i;
	u8 val;

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

static int indycam_get_control(struct i2c_client *client,
			       struct indycam_control *ctrl)
{
	struct indycam *camera = i2c_get_clientdata(client);
	u8 reg;
	int ret = 0;

	switch (ctrl->type) {
	case INDYCAM_CONTROL_AGC:
	case INDYCAM_CONTROL_AWB:
		ret = indycam_read_reg(client, INDYCAM_REG_CONTROL, &reg);
		if (ret)
			return -EIO;
		if (ctrl->type == INDYCAM_CONTROL_AGC)
			ctrl->value = (reg & INDYCAM_CONTROL_AGCENA)
				? 1 : 0;
		else
			ctrl->value = (reg & INDYCAM_CONTROL_AWBCTL)
				? 1 : 0;
		break;
	case INDYCAM_CONTROL_SHUTTER:
		ret = indycam_read_reg(client, INDYCAM_REG_SHUTTER, &reg);
		if (ret)
			return -EIO;
		ctrl->value = ((s32)reg == 0x00) ? 0xff : ((s32)reg - 1);
		break;
	case INDYCAM_CONTROL_GAIN:
		ret = indycam_read_reg(client, INDYCAM_REG_GAIN, &reg);
		if (ret)
			return -EIO;
		ctrl->value = (s32)reg;
		break;
	case INDYCAM_CONTROL_RED_BALANCE:
		ret = indycam_read_reg(client, INDYCAM_REG_RED_BALANCE, &reg);
		if (ret)
			return -EIO;
		ctrl->value = (s32)reg;
		break;
	case INDYCAM_CONTROL_BLUE_BALANCE:
		ret = indycam_read_reg(client, INDYCAM_REG_BLUE_BALANCE, &reg);
		if (ret)
			return -EIO;
		ctrl->value = (s32)reg;
		break;
	case INDYCAM_CONTROL_RED_SATURATION:
		ret = indycam_read_reg(client,
				       INDYCAM_REG_RED_SATURATION, &reg);
		if (ret)
			return -EIO;
		ctrl->value = (s32)reg;
		break;
	case INDYCAM_CONTROL_BLUE_SATURATION:
		ret = indycam_read_reg(client,
				       INDYCAM_REG_BLUE_SATURATION, &reg);
		if (ret)
			return -EIO;
		ctrl->value = (s32)reg;
		break;
	case INDYCAM_CONTROL_GAMMA:
		if (camera->version == CAMERA_VERSION_MOOSE) {
			ret = indycam_read_reg(client,
					       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_set_control(struct i2c_client *client,
			       struct indycam_control *ctrl)
{
	struct indycam *camera = i2c_get_clientdata(client);
	u8 reg;
	int ret = 0;

	switch (ctrl->type) {
	case INDYCAM_CONTROL_AGC:
	case INDYCAM_CONTROL_AWB:
		ret = indycam_read_reg(client, INDYCAM_REG_CONTROL, &reg);
		if (ret)
			break;

		if (ctrl->type == INDYCAM_CONTROL_AGC) {
			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(client, INDYCAM_REG_CONTROL, reg);
		break;
	case INDYCAM_CONTROL_SHUTTER:
		reg = (ctrl->value == 0xff) ? 0x00 : (ctrl->value + 1);
		ret = indycam_write_reg(client, INDYCAM_REG_SHUTTER, reg);
		break;
	case INDYCAM_CONTROL_GAIN:
		ret = indycam_write_reg(client, INDYCAM_REG_GAIN, ctrl->value);
		break;
	case INDYCAM_CONTROL_RED_BALANCE:
		ret = indycam_write_reg(client, INDYCAM_REG_RED_BALANCE,
					ctrl->value);
		break;
	case INDYCAM_CONTROL_BLUE_BALANCE:
		ret = indycam_write_reg(client, INDYCAM_REG_BLUE_BALANCE,
					ctrl->value);
		break;
	case INDYCAM_CONTROL_RED_SATURATION:
		ret = indycam_write_reg(client, INDYCAM_REG_RED_SATURATION,
					ctrl->value);
		break;
	case INDYCAM_CONTROL_BLUE_SATURATION:
		ret = indycam_write_reg(client, INDYCAM_REG_BLUE_SATURATION,
					ctrl->value);
		break;
	case INDYCAM_CONTROL_GAMMA:
		if (camera->version == CAMERA_VERSION_MOOSE) {
			ret = indycam_write_reg(client, INDYCAM_REG_GAMMA,
						ctrl->value);
		}
		break;
	default:
		ret = -EINVAL;
	}

	return ret;
}

/* I2C-interface */

static int indycam_attach(struct i2c_adapter *adap, int addr, int kind)
{
	int err = 0;
	struct indycam *camera;
	struct i2c_client *client;

	printk(KERN_INFO "SGI IndyCam driver version %s\n",
	       INDYCAM_MODULE_VERSION);

	client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
	if (!client)
		return -ENOMEM;
	camera = kzalloc(sizeof(struct indycam), GFP_KERNEL);
	if (!camera) {
		err = -ENOMEM;
		goto out_free_client;
	}

	client->addr = addr;
	client->adapter = adap;
	client->driver = &i2c_driver_indycam;
	client->flags = 0;
	strcpy(client->name, "IndyCam client");
	i2c_set_clientdata(client, camera);

	camera->client = client;

	err = i2c_attach_client(client);
	if (err)
		goto out_free_camera;

	camera->version = i2c_smbus_read_byte_data(client,
						   INDYCAM_REG_VERSION);
	if (camera->version != CAMERA_VERSION_INDY &&
	    camera->version != CAMERA_VERSION_MOOSE) {
		err = -ENODEV;
		goto out_detach_client;
	}
	printk(KERN_INFO "IndyCam v%d.%d detected\n",
	       INDYCAM_VERSION_MAJOR(camera->version),
	       INDYCAM_VERSION_MINOR(camera->version));

	indycam_regdump(client);

	// initialize
	err = indycam_write_block(client, 0, sizeof(initseq), (u8 *)&initseq);
	if (err) {
		printk(KERN_ERR "IndyCam initalization failed\n");
		err = -EIO;
		goto out_detach_client;
	}

	indycam_regdump(client);

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

	indycam_regdump(client);

	printk(KERN_INFO "IndyCam initialized\n");

	return 0;

out_detach_client:
	i2c_detach_client(client);
out_free_camera:
	kfree(camera);
out_free_client:
	kfree(client);
	return err;
}

static int indycam_probe(struct i2c_adapter *adap)
{
	/* Indy specific crap */
	if (adap->id == I2C_HW_SGI_VINO)
		return indycam_attach(adap, INDYCAM_ADDR, 0);
	/* Feel free to add probe here :-) */
	return -ENODEV;
}

static int indycam_detach(struct i2c_client *client)
{
	struct indycam *camera = i2c_get_clientdata(client);

	i2c_detach_client(client);
	kfree(camera);
	kfree(client);
	return 0;
}

static int indycam_command(struct i2c_client *client, unsigned int cmd,
			   void *arg)
{
	// struct indycam *camera = i2c_get_clientdata(client);

	/* The old video_decoder interface just isn't enough,
	 * so we'll use some custom commands. */
	switch (cmd) {
	case DECODER_GET_CAPABILITIES: {
		struct video_decoder_capability *cap = arg;

		cap->flags  = VIDEO_DECODER_NTSC;
		cap->inputs = 1;
		cap->outputs = 1;
		break;
	}
	case DECODER_GET_STATUS: {
		int *iarg = arg;

		*iarg = DECODER_STATUS_GOOD | DECODER_STATUS_NTSC |
			DECODER_STATUS_COLOR;
		break;
	}
	case DECODER_SET_NORM: {
		int *iarg = arg;

		switch (*iarg) {
		case VIDEO_MODE_NTSC:
			break;
		default:
			return -EINVAL;
		}
		break;
	}
	case DECODER_SET_INPUT:	{
		int *iarg = arg;

		if (*iarg != 0)
			return -EINVAL;
		break;
	}
	case DECODER_SET_OUTPUT: {
		int *iarg = arg;

		if (*iarg != 0)
			return -EINVAL;
		break;
	}
	case DECODER_ENABLE_OUTPUT: {
		/* Always enabled */
		break;
	}
	case DECODER_SET_PICTURE: {
		// struct video_picture *pic = arg;
		/* TODO: convert values for indycam_set_controls() */
		break;
	}
	case DECODER_INDYCAM_GET_CONTROL: {
		return indycam_get_control(client, arg);
	}
	case DECODER_INDYCAM_SET_CONTROL: {
		return indycam_set_control(client, arg);
	}
	default:
		return -EINVAL;
	}

	return 0;
}

static struct i2c_driver i2c_driver_indycam = {
	.driver = {
		.name 	= "indycam",
	},
	.id		= I2C_DRIVERID_INDYCAM,
	.attach_adapter = indycam_probe,
	.detach_client	= indycam_detach,
	.command	= indycam_command,
};

static int __init indycam_init(void)
{
	return i2c_add_driver(&i2c_driver_indycam);
}

static void __exit indycam_exit(void)
{
	i2c_del_driver(&i2c_driver_indycam);
}

module_init(indycam_init);
module_exit(indycam_exit);
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 RB	21
	22	#include <linux/videodev.h>
	23	/* IndyCam decodes stream of photons into digital image representation ;-) */
	24	#include <linux/video_decoder.h>
	25	#include <linux/i2c.h>
	26
	27	#include "indycam.h"
	28
a637a114	29	#define INDYCAM_MODULE_VERSION "0.0.5"
d203a7ec RB	30
	31	MODULE_DESCRIPTION("SGI IndyCam driver");
	32	MODULE_VERSION(INDYCAM_MODULE_VERSION);
	33	MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
	34	MODULE_LICENSE("GPL");
	35
a637a114 LM	36	// #define INDYCAM_DEBUG
a637a114 LM	37
d203a7ec RB	38	#ifdef INDYCAM_DEBUG
	39	#define dprintk(x...) printk("IndyCam: " x);
	40	#define indycam_regdump(client) indycam_regdump_debug(client)
	41	#else
	42	#define dprintk(x...)
	43	#define indycam_regdump(client)
	44	#endif
	45
d203a7ec RB	46	struct indycam {
d203a7ec RB	47	struct i2c_client *client;
a637a114	48	u8 version;
d203a7ec RB	49	};
	50
	51	static struct i2c_driver i2c_driver_indycam;
	52
a637a114	53	static const u8 initseq[] = {
d203a7ec	54	INDYCAM_CONTROL_AGCENA, /* INDYCAM_CONTROL */
a637a114	55	INDYCAM_SHUTTER_60, /* INDYCAM_SHUTTER */
d203a7ec RB	56	INDYCAM_GAIN_DEFAULT, /* INDYCAM_GAIN */
	57	0x00, /* INDYCAM_BRIGHTNESS (read-only) */
	58	INDYCAM_RED_BALANCE_DEFAULT, /* INDYCAM_RED_BALANCE */
	59	INDYCAM_BLUE_BALANCE_DEFAULT, /* INDYCAM_BLUE_BALANCE */
	60	INDYCAM_RED_SATURATION_DEFAULT, /* INDYCAM_RED_SATURATION */
	61	INDYCAM_BLUE_SATURATION_DEFAULT,/* INDYCAM_BLUE_SATURATION */
	62	};
	63
	64	/* IndyCam register handling */
	65
a637a114	66	static int indycam_read_reg(struct i2c_client client, u8 reg, u8 value)
d203a7ec RB	67	{
	68	int ret;
	69
a637a114	70	if (reg == INDYCAM_REG_RESET) {
d203a7ec RB	71	dprintk("indycam_read_reg(): "
	72	"skipping write-only register %d\n", reg);
	73	*value = 0;
	74	return 0;
	75	}
	76
	77	ret = i2c_smbus_read_byte_data(client, reg);
a637a114	78
d203a7ec RB	79	if (ret < 0) {
	80	printk(KERN_ERR "IndyCam: indycam_read_reg(): read failed, "
	81	"register = 0x%02x\n", reg);
	82	return ret;
	83	}
	84
a637a114	85	*value = (u8)ret;
d203a7ec RB	86
	87	return 0;
	88	}
	89
a637a114	90	static int indycam_write_reg(struct i2c_client *client, u8 reg, u8 value)
d203a7ec RB	91	{
	92	int err;
	93
a637a114 LM	94	if ((reg == INDYCAM_REG_BRIGHTNESS)
a637a114 LM	95	\|\| (reg == INDYCAM_REG_VERSION)) {
d203a7ec RB	96	dprintk("indycam_write_reg(): "
	97	"skipping read-only register %d\n", reg);
	98	return 0;
	99	}
	100
	101	dprintk("Writing Reg %d = 0x%02x\n", reg, value);
	102	err = i2c_smbus_write_byte_data(client, reg, value);
a637a114	103
d203a7ec RB	104	if (err) {
	105	printk(KERN_ERR "IndyCam: indycam_write_reg(): write failed, "
	106	"register = 0x%02x, value = 0x%02x\n", reg, value);
	107	}
	108	return err;
	109	}
	110
a637a114 LM	111	static int indycam_write_block(struct i2c_client *client, u8 reg,
a637a114 LM	112	u8 length, u8 *data)
d203a7ec	113	{
a637a114	114	int i, err;
d203a7ec	115
a637a114	116	for (i = 0; i < length; i++) {
d203a7ec RB	117	err = indycam_write_reg(client, reg + i, data[i]);
	118	if (err)
	119	return err;
	120	}
	121
	122	return 0;
	123	}
	124
	125	/* Helper functions */
	126
	127	#ifdef INDYCAM_DEBUG
	128	static void indycam_regdump_debug(struct i2c_client *client)
	129	{
	130	int i;
a637a114	131	u8 val;
d203a7ec RB	132
	133	for (i = 0; i < 9; i++) {
	134	indycam_read_reg(client, i, &val);
	135	dprintk("Reg %d = 0x%02x\n", i, val);
	136	}
	137	}
	138	#endif
	139
a637a114 LM	140	static int indycam_get_control(struct i2c_client *client,
a637a114 LM	141	struct indycam_control *ctrl)
d203a7ec	142	{
a637a114 LM	143	struct indycam *camera = i2c_get_clientdata(client);
	144	u8 reg;
	145	int ret = 0;
	146
	147	switch (ctrl->type) {
	148	case INDYCAM_CONTROL_AGC:
	149	case INDYCAM_CONTROL_AWB:
	150	ret = indycam_read_reg(client, INDYCAM_REG_CONTROL, &reg);
	151	if (ret)
	152	return -EIO;
	153	if (ctrl->type == INDYCAM_CONTROL_AGC)
	154	ctrl->value = (reg & INDYCAM_CONTROL_AGCENA)
	155	? 1 : 0;
	156	else
	157	ctrl->value = (reg & INDYCAM_CONTROL_AWBCTL)
	158	? 1 : 0;
	159	break;
	160	case INDYCAM_CONTROL_SHUTTER:
	161	ret = indycam_read_reg(client, INDYCAM_REG_SHUTTER, &reg);
	162	if (ret)
	163	return -EIO;
	164	ctrl->value = ((s32)reg == 0x00) ? 0xff : ((s32)reg - 1);
	165	break;
	166	case INDYCAM_CONTROL_GAIN:
	167	ret = indycam_read_reg(client, INDYCAM_REG_GAIN, &reg);
	168	if (ret)
	169	return -EIO;
	170	ctrl->value = (s32)reg;
	171	break;
	172	case INDYCAM_CONTROL_RED_BALANCE:
	173	ret = indycam_read_reg(client, INDYCAM_REG_RED_BALANCE, &reg);
	174	if (ret)
	175	return -EIO;
	176	ctrl->value = (s32)reg;
	177	break;
	178	case INDYCAM_CONTROL_BLUE_BALANCE:
	179	ret = indycam_read_reg(client, INDYCAM_REG_BLUE_BALANCE, &reg);
	180	if (ret)
	181	return -EIO;
	182	ctrl->value = (s32)reg;
	183	break;
	184	case INDYCAM_CONTROL_RED_SATURATION:
	185	ret = indycam_read_reg(client,
	186	INDYCAM_REG_RED_SATURATION, &reg);
	187	if (ret)
	188	return -EIO;
	189	ctrl->value = (s32)reg;
	190	break;
	191	case INDYCAM_CONTROL_BLUE_SATURATION:
	192	ret = indycam_read_reg(client,
	193	INDYCAM_REG_BLUE_SATURATION, &reg);
	194	if (ret)
	195	return -EIO;
	196	ctrl->value = (s32)reg;
	197	break;
	198	case INDYCAM_CONTROL_GAMMA:
	199	if (camera->version == CAMERA_VERSION_MOOSE) {
	200	ret = indycam_read_reg(client,
	201	INDYCAM_REG_GAMMA, &reg);
	202	if (ret)
	203	return -EIO;
	204	ctrl->value = (s32)reg;
	205	} else {
	206	ctrl->value = INDYCAM_GAMMA_DEFAULT;
207	}
208	break;
209	default:
210	ret = -EINVAL;
211	}
d203a7ec	212
a637a114	213	return ret;
d203a7ec RB	214	}
d203a7ec RB	215
a637a114 LM	216	static int indycam_set_control(struct i2c_client *client,
a637a114 LM	217	struct indycam_control *ctrl)
d203a7ec	218	{
a637a114 LM	219	struct indycam *camera = i2c_get_clientdata(client);
	220	u8 reg;
	221	int ret = 0;
	222
	223	switch (ctrl->type) {
	224	case INDYCAM_CONTROL_AGC:
	225	case INDYCAM_CONTROL_AWB:
	226	ret = indycam_read_reg(client, INDYCAM_REG_CONTROL, &reg);
	227	if (ret)
	228	break;
d203a7ec	229
a637a114 LM	230	if (ctrl->type == INDYCAM_CONTROL_AGC) {
	231	if (ctrl->value)
	232	reg \|= INDYCAM_CONTROL_AGCENA;
	233	else
	234	reg &= ~INDYCAM_CONTROL_AGCENA;
	235	} else {
	236	if (ctrl->value)
	237	reg \|= INDYCAM_CONTROL_AWBCTL;
	238	else
	239	reg &= ~INDYCAM_CONTROL_AWBCTL;
	240	}
	241
	242	ret = indycam_write_reg(client, INDYCAM_REG_CONTROL, reg);
	243	break;
	244	case INDYCAM_CONTROL_SHUTTER:
	245	reg = (ctrl->value == 0xff) ? 0x00 : (ctrl->value + 1);
	246	ret = indycam_write_reg(client, INDYCAM_REG_SHUTTER, reg);
	247	break;
	248	case INDYCAM_CONTROL_GAIN:
	249	ret = indycam_write_reg(client, INDYCAM_REG_GAIN, ctrl->value);
	250	break;
	251	case INDYCAM_CONTROL_RED_BALANCE:
	252	ret = indycam_write_reg(client, INDYCAM_REG_RED_BALANCE,
	253	ctrl->value);
	254	break;
	255	case INDYCAM_CONTROL_BLUE_BALANCE:
	256	ret = indycam_write_reg(client, INDYCAM_REG_BLUE_BALANCE,
	257	ctrl->value);
	258	break;
	259	case INDYCAM_CONTROL_RED_SATURATION:
	260	ret = indycam_write_reg(client, INDYCAM_REG_RED_SATURATION,
	261	ctrl->value);
	262	break;
	263	case INDYCAM_CONTROL_BLUE_SATURATION:
	264	ret = indycam_write_reg(client, INDYCAM_REG_BLUE_SATURATION,
	265	ctrl->value);
	266	break;
	267	case INDYCAM_CONTROL_GAMMA:
	268	if (camera->version == CAMERA_VERSION_MOOSE) {
	269	ret = indycam_write_reg(client, INDYCAM_REG_GAMMA,
	270	ctrl->value);
	271	}
	272	break;
	273	default:
	274	ret = -EINVAL;
d203a7ec	275	}
d203a7ec	276
a637a114	277	return ret;
d203a7ec RB	278	}
	279
	280	/* I2C-interface */
	281
	282	static int indycam_attach(struct i2c_adapter *adap, int addr, int kind)
	283	{
	284	int err = 0;
	285	struct indycam *camera;
	286	struct i2c_client *client;
	287
	288	printk(KERN_INFO "SGI IndyCam driver version %s\n",
	289	INDYCAM_MODULE_VERSION);
	290
7408187d	291	client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
d203a7ec RB	292	if (!client)
d203a7ec RB	293	return -ENOMEM;
7408187d	294	camera = kzalloc(sizeof(struct indycam), GFP_KERNEL);
d203a7ec RB	295	if (!camera) {
	296	err = -ENOMEM;
	297	goto out_free_client;
	298	}
	299
d203a7ec RB	300	client->addr = addr;
	301	client->adapter = adap;
	302	client->driver = &i2c_driver_indycam;
	303	client->flags = 0;
	304	strcpy(client->name, "IndyCam client");
	305	i2c_set_clientdata(client, camera);
	306
	307	camera->client = client;
	308
	309	err = i2c_attach_client(client);
	310	if (err)
	311	goto out_free_camera;
	312
a637a114 LM	313	camera->version = i2c_smbus_read_byte_data(client,
a637a114 LM	314	INDYCAM_REG_VERSION);
d203a7ec RB	315	if (camera->version != CAMERA_VERSION_INDY &&
	316	camera->version != CAMERA_VERSION_MOOSE) {
	317	err = -ENODEV;
	318	goto out_detach_client;
	319	}
	320	printk(KERN_INFO "IndyCam v%d.%d detected\n",
	321	INDYCAM_VERSION_MAJOR(camera->version),
	322	INDYCAM_VERSION_MINOR(camera->version));
	323
	324	indycam_regdump(client);
	325
	326	// initialize
a637a114	327	err = indycam_write_block(client, 0, sizeof(initseq), (u8 *)&initseq);
d203a7ec RB	328	if (err) {
	329	printk(KERN_ERR "IndyCam initalization failed\n");
	330	err = -EIO;
	331	goto out_detach_client;
	332	}
	333
	334	indycam_regdump(client);
	335
	336	// white balance
a637a114	337	err = indycam_write_reg(client, INDYCAM_REG_CONTROL,
d203a7ec RB	338	INDYCAM_CONTROL_AGCENA \| INDYCAM_CONTROL_AWBCTL);
d203a7ec RB	339	if (err) {
a637a114	340	printk(KERN_ERR "IndyCam: White balancing camera failed\n");
d203a7ec RB	341	err = -EIO;
	342	goto out_detach_client;
	343	}
	344
	345	indycam_regdump(client);
	346
	347	printk(KERN_INFO "IndyCam initialized\n");
	348
	349	return 0;
	350
	351	out_detach_client:
	352	i2c_detach_client(client);
	353	out_free_camera:
	354	kfree(camera);
	355	out_free_client:
	356	kfree(client);
	357	return err;
	358	}
	359
	360	static int indycam_probe(struct i2c_adapter *adap)
	361	{
	362	/* Indy specific crap */
495515b3	363	if (adap->id == I2C_HW_SGI_VINO)
d203a7ec RB	364	return indycam_attach(adap, INDYCAM_ADDR, 0);
	365	/* Feel free to add probe here :-) */
	366	return -ENODEV;
	367	}
	368
	369	static int indycam_detach(struct i2c_client *client)
	370	{
	371	struct indycam *camera = i2c_get_clientdata(client);
	372
	373	i2c_detach_client(client);
	374	kfree(camera);
	375	kfree(client);
	376	return 0;
	377	}
	378
	379	static int indycam_command(struct i2c_client *client, unsigned int cmd,
	380	void *arg)
	381	{
	382	// struct indycam *camera = i2c_get_clientdata(client);
	383
	384	/* The old video_decoder interface just isn't enough,
	385	* so we'll use some custom commands. */
	386	switch (cmd) {
	387	case DECODER_GET_CAPABILITIES: {
	388	struct video_decoder_capability *cap = arg;
	389
	390	cap->flags = VIDEO_DECODER_NTSC;
	391	cap->inputs = 1;
	392	cap->outputs = 1;
	393	break;
	394	}
	395	case DECODER_GET_STATUS: {
	396	int *iarg = arg;
	397
	398	*iarg = DECODER_STATUS_GOOD \| DECODER_STATUS_NTSC \|
	399	DECODER_STATUS_COLOR;
	400	break;
	401	}
	402	case DECODER_SET_NORM: {
	403	int *iarg = arg;
	404
	405	switch (*iarg) {
	406	case VIDEO_MODE_NTSC:
	407	break;
	408	default:
	409	return -EINVAL;
	410	}
	411	break;
	412	}
	413	case DECODER_SET_INPUT: {
	414	int *iarg = arg;
	415
	416	if (*iarg != 0)
	417	return -EINVAL;
	418	break;
	419	}
	420	case DECODER_SET_OUTPUT: {
	421	int *iarg = arg;
	422
	423	if (*iarg != 0)
	424	return -EINVAL;
	425	break;
	426	}
	427	case DECODER_ENABLE_OUTPUT: {
428	/* Always enabled */
429	break;
430	}
431	case DECODER_SET_PICTURE: {
432	// struct video_picture *pic = arg;
433	/* TODO: convert values for indycam_set_controls() */
434	break;
435	}
a637a114 LM	436	case DECODER_INDYCAM_GET_CONTROL: {
a637a114 LM	437	return indycam_get_control(client, arg);
d203a7ec	438	}
a637a114 LM	439	case DECODER_INDYCAM_SET_CONTROL: {
a637a114 LM	440	return indycam_set_control(client, arg);
d203a7ec RB	441	}
	442	default:
	443	return -EINVAL;
	444	}
	445
	446	return 0;
	447	}
	448
	449	static struct i2c_driver i2c_driver_indycam = {
604f28e2	450	.driver = {
604f28e2 LR	451	.name = "indycam",
604f28e2 LR	452	},
a637a114	453	.id = I2C_DRIVERID_INDYCAM,
d203a7ec	454	.attach_adapter = indycam_probe,
a637a114 LM	455	.detach_client = indycam_detach,
a637a114 LM	456	.command = indycam_command,
d203a7ec RB	457	};
	458
	459	static int __init indycam_init(void)
	460	{
	461	return i2c_add_driver(&i2c_driver_indycam);
	462	}
	463
	464	static void __exit indycam_exit(void)
	465	{
	466	i2c_del_driver(&i2c_driver_indycam);
	467	}
	468
	469	module_init(indycam_init);
	470	module_exit(indycam_exit);