[GitHub/mt8127/android_kernel_alcatel_ttab.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-legacy.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");

static unsigned short normal_i2c[] = { 0x56 >> 1, I2C_CLIENT_END };

I2C_CLIENT_INSMOD;

// #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 int indycam_command(struct i2c_client *client, unsigned cmd, void *arg)
{
	return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg);
}

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

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 int indycam_legacy_probe(struct i2c_adapter *adapter)
{
	return adapter->id == I2C_HW_SGI_VINO;
}

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",
	.driverid = I2C_DRIVERID_INDYCAM,
	.command = indycam_command,
	.probe = indycam_probe,
	.remove = indycam_remove,
	.legacy_probe = indycam_legacy_probe,
	.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>
cf4e9484	27	#include <media/v4l2-i2c-drv-legacy.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 HV	38	static unsigned short normal_i2c[] = { 0x56 >> 1, I2C_CLIENT_END };
	39
	40	I2C_CLIENT_INSMOD;
	41
a637a114 LM	42	// #define INDYCAM_DEBUG
a637a114 LM	43
d203a7ec RB	44	#ifdef INDYCAM_DEBUG
	45	#define dprintk(x...) printk("IndyCam: " x);
	46	#define indycam_regdump(client) indycam_regdump_debug(client)
	47	#else
	48	#define dprintk(x...)
	49	#define indycam_regdump(client)
	50	#endif
	51
d203a7ec	52	struct indycam {
2b80a191	53	struct v4l2_subdev sd;
a637a114	54	u8 version;
d203a7ec RB	55	};
d203a7ec RB	56
2b80a191 HV	57	static inline struct indycam to_indycam(struct v4l2_subdev sd)
	58	{
	59	return container_of(sd, struct indycam, sd);
	60	}
	61
a637a114	62	static const u8 initseq[] = {
d203a7ec	63	INDYCAM_CONTROL_AGCENA, /* INDYCAM_CONTROL */
a637a114	64	INDYCAM_SHUTTER_60, /* INDYCAM_SHUTTER */
d203a7ec RB	65	INDYCAM_GAIN_DEFAULT, /* INDYCAM_GAIN */
	66	0x00, /* INDYCAM_BRIGHTNESS (read-only) */
	67	INDYCAM_RED_BALANCE_DEFAULT, /* INDYCAM_RED_BALANCE */
	68	INDYCAM_BLUE_BALANCE_DEFAULT, /* INDYCAM_BLUE_BALANCE */
	69	INDYCAM_RED_SATURATION_DEFAULT, /* INDYCAM_RED_SATURATION */
	70	INDYCAM_BLUE_SATURATION_DEFAULT,/* INDYCAM_BLUE_SATURATION */
	71	};
	72
	73	/* IndyCam register handling */
	74
2b80a191	75	static int indycam_read_reg(struct v4l2_subdev sd, u8 reg, u8 value)
d203a7ec	76	{
2b80a191	77	struct i2c_client *client = v4l2_get_subdevdata(sd);
d203a7ec RB	78	int ret;
d203a7ec RB	79
a637a114	80	if (reg == INDYCAM_REG_RESET) {
d203a7ec RB	81	dprintk("indycam_read_reg(): "
	82	"skipping write-only register %d\n", reg);
	83	*value = 0;
	84	return 0;
	85	}
	86
	87	ret = i2c_smbus_read_byte_data(client, reg);
a637a114	88
d203a7ec RB	89	if (ret < 0) {
	90	printk(KERN_ERR "IndyCam: indycam_read_reg(): read failed, "
	91	"register = 0x%02x\n", reg);
	92	return ret;
	93	}
	94
a637a114	95	*value = (u8)ret;
d203a7ec RB	96
	97	return 0;
	98	}
	99
2b80a191	100	static int indycam_write_reg(struct v4l2_subdev *sd, u8 reg, u8 value)
d203a7ec	101	{
2b80a191	102	struct i2c_client *client = v4l2_get_subdevdata(sd);
d203a7ec RB	103	int err;
d203a7ec RB	104
2b80a191	105	if (reg == INDYCAM_REG_BRIGHTNESS \|\| reg == INDYCAM_REG_VERSION) {
d203a7ec RB	106	dprintk("indycam_write_reg(): "
	107	"skipping read-only register %d\n", reg);
	108	return 0;
	109	}
	110
	111	dprintk("Writing Reg %d = 0x%02x\n", reg, value);
	112	err = i2c_smbus_write_byte_data(client, reg, value);
a637a114	113
d203a7ec RB	114	if (err) {
	115	printk(KERN_ERR "IndyCam: indycam_write_reg(): write failed, "
	116	"register = 0x%02x, value = 0x%02x\n", reg, value);
	117	}
	118	return err;
	119	}
	120
2b80a191	121	static int indycam_write_block(struct v4l2_subdev *sd, u8 reg,
a637a114	122	u8 length, u8 *data)
d203a7ec	123	{
a637a114	124	int i, err;
d203a7ec	125
a637a114	126	for (i = 0; i < length; i++) {
2b80a191	127	err = indycam_write_reg(sd, reg + i, data[i]);
d203a7ec RB	128	if (err)
	129	return err;
	130	}
	131
	132	return 0;
	133	}
	134
	135	/* Helper functions */
	136
	137	#ifdef INDYCAM_DEBUG
2b80a191	138	static void indycam_regdump_debug(struct v4l2_subdev *sd)
d203a7ec RB	139	{
d203a7ec RB	140	int i;
a637a114	141	u8 val;
d203a7ec RB	142
d203a7ec RB	143	for (i = 0; i < 9; i++) {
2b80a191	144	indycam_read_reg(sd, i, &val);
d203a7ec RB	145	dprintk("Reg %d = 0x%02x\n", i, val);
	146	}
	147	}
	148	#endif
	149
2b80a191	150	static int indycam_g_ctrl(struct v4l2_subdev sd, struct v4l2_control ctrl)
d203a7ec	151	{
2b80a191	152	struct indycam *camera = to_indycam(sd);
a637a114 LM	153	u8 reg;
	154	int ret = 0;
	155
cf4e9484 HV	156	switch (ctrl->id) {
	157	case V4L2_CID_AUTOGAIN:
	158	case V4L2_CID_AUTO_WHITE_BALANCE:
2b80a191	159	ret = indycam_read_reg(sd, INDYCAM_REG_CONTROL, &reg);
a637a114 LM	160	if (ret)
a637a114 LM	161	return -EIO;
cf4e9484	162	if (ctrl->id == V4L2_CID_AUTOGAIN)
a637a114 LM	163	ctrl->value = (reg & INDYCAM_CONTROL_AGCENA)
	164	? 1 : 0;
	165	else
	166	ctrl->value = (reg & INDYCAM_CONTROL_AWBCTL)
	167	? 1 : 0;
	168	break;
cf4e9484	169	case V4L2_CID_EXPOSURE:
2b80a191	170	ret = indycam_read_reg(sd, INDYCAM_REG_SHUTTER, &reg);
a637a114 LM	171	if (ret)
	172	return -EIO;
	173	ctrl->value = ((s32)reg == 0x00) ? 0xff : ((s32)reg - 1);
	174	break;
cf4e9484	175	case V4L2_CID_GAIN:
2b80a191	176	ret = indycam_read_reg(sd, INDYCAM_REG_GAIN, &reg);
a637a114 LM	177	if (ret)
	178	return -EIO;
	179	ctrl->value = (s32)reg;
	180	break;
cf4e9484	181	case V4L2_CID_RED_BALANCE:
2b80a191	182	ret = indycam_read_reg(sd, INDYCAM_REG_RED_BALANCE, &reg);
a637a114 LM	183	if (ret)
	184	return -EIO;
	185	ctrl->value = (s32)reg;
	186	break;
cf4e9484	187	case V4L2_CID_BLUE_BALANCE:
2b80a191	188	ret = indycam_read_reg(sd, INDYCAM_REG_BLUE_BALANCE, &reg);
a637a114 LM	189	if (ret)
	190	return -EIO;
	191	ctrl->value = (s32)reg;
	192	break;
	193	case INDYCAM_CONTROL_RED_SATURATION:
2b80a191	194	ret = indycam_read_reg(sd,
a637a114 LM	195	INDYCAM_REG_RED_SATURATION, &reg);
	196	if (ret)
	197	return -EIO;
	198	ctrl->value = (s32)reg;
	199	break;
	200	case INDYCAM_CONTROL_BLUE_SATURATION:
2b80a191	201	ret = indycam_read_reg(sd,
a637a114 LM	202	INDYCAM_REG_BLUE_SATURATION, &reg);
	203	if (ret)
	204	return -EIO;
	205	ctrl->value = (s32)reg;
	206	break;
cf4e9484	207	case V4L2_CID_GAMMA:
a637a114	208	if (camera->version == CAMERA_VERSION_MOOSE) {
2b80a191	209	ret = indycam_read_reg(sd,
a637a114 LM	210	INDYCAM_REG_GAMMA, &reg);
	211	if (ret)
	212	return -EIO;
	213	ctrl->value = (s32)reg;
	214	} else {
	215	ctrl->value = INDYCAM_GAMMA_DEFAULT;
	216	}
	217	break;
	218	default:
	219	ret = -EINVAL;
	220	}
d203a7ec	221
a637a114	222	return ret;
d203a7ec RB	223	}
d203a7ec RB	224
2b80a191	225	static int indycam_s_ctrl(struct v4l2_subdev sd, struct v4l2_control ctrl)
d203a7ec	226	{
2b80a191	227	struct indycam *camera = to_indycam(sd);
a637a114 LM	228	u8 reg;
	229	int ret = 0;
	230
cf4e9484 HV	231	switch (ctrl->id) {
	232	case V4L2_CID_AUTOGAIN:
	233	case V4L2_CID_AUTO_WHITE_BALANCE:
2b80a191	234	ret = indycam_read_reg(sd, INDYCAM_REG_CONTROL, &reg);
a637a114 LM	235	if (ret)
a637a114 LM	236	break;
d203a7ec	237
cf4e9484	238	if (ctrl->id == V4L2_CID_AUTOGAIN) {
a637a114 LM	239	if (ctrl->value)
	240	reg \|= INDYCAM_CONTROL_AGCENA;
	241	else
	242	reg &= ~INDYCAM_CONTROL_AGCENA;
	243	} else {
	244	if (ctrl->value)
	245	reg \|= INDYCAM_CONTROL_AWBCTL;
	246	else
	247	reg &= ~INDYCAM_CONTROL_AWBCTL;
	248	}
	249
2b80a191	250	ret = indycam_write_reg(sd, INDYCAM_REG_CONTROL, reg);
a637a114	251	break;
cf4e9484	252	case V4L2_CID_EXPOSURE:
a637a114	253	reg = (ctrl->value == 0xff) ? 0x00 : (ctrl->value + 1);
2b80a191	254	ret = indycam_write_reg(sd, INDYCAM_REG_SHUTTER, reg);
a637a114	255	break;
cf4e9484	256	case V4L2_CID_GAIN:
2b80a191	257	ret = indycam_write_reg(sd, INDYCAM_REG_GAIN, ctrl->value);
a637a114	258	break;
cf4e9484	259	case V4L2_CID_RED_BALANCE:
2b80a191	260	ret = indycam_write_reg(sd, INDYCAM_REG_RED_BALANCE,
a637a114 LM	261	ctrl->value);
a637a114 LM	262	break;
cf4e9484	263	case V4L2_CID_BLUE_BALANCE:
2b80a191	264	ret = indycam_write_reg(sd, INDYCAM_REG_BLUE_BALANCE,
a637a114 LM	265	ctrl->value);
	266	break;
	267	case INDYCAM_CONTROL_RED_SATURATION:
2b80a191	268	ret = indycam_write_reg(sd, INDYCAM_REG_RED_SATURATION,
a637a114 LM	269	ctrl->value);
	270	break;
	271	case INDYCAM_CONTROL_BLUE_SATURATION:
2b80a191	272	ret = indycam_write_reg(sd, INDYCAM_REG_BLUE_SATURATION,
a637a114 LM	273	ctrl->value);
a637a114 LM	274	break;
cf4e9484	275	case V4L2_CID_GAMMA:
a637a114	276	if (camera->version == CAMERA_VERSION_MOOSE) {
2b80a191	277	ret = indycam_write_reg(sd, INDYCAM_REG_GAMMA,
a637a114 LM	278	ctrl->value);
	279	}
	280	break;
	281	default:
	282	ret = -EINVAL;
d203a7ec	283	}
d203a7ec	284
a637a114	285	return ret;
d203a7ec RB	286	}
	287
	288	/* I2C-interface */
	289
2b80a191 HV	290	static int indycam_g_chip_ident(struct v4l2_subdev *sd,
2b80a191 HV	291	struct v4l2_dbg_chip_ident *chip)
cf4e9484	292	{
2b80a191 HV	293	struct i2c_client *client = v4l2_get_subdevdata(sd);
2b80a191 HV	294	struct indycam *camera = to_indycam(sd);
cf4e9484	295
2b80a191 HV	296	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_INDYCAM,
	297	camera->version);
	298	}
cf4e9484	299
2b80a191 HV	300	static int indycam_command(struct i2c_client client, unsigned cmd, void arg)
	301	{
	302	return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg);
cf4e9484 HV	303	}
cf4e9484 HV	304
2b80a191 HV	305	/* ----------------------------------------------------------------------- */
	306
	307	static const struct v4l2_subdev_core_ops indycam_core_ops = {
	308	.g_chip_ident = indycam_g_chip_ident,
	309	.g_ctrl = indycam_g_ctrl,
	310	.s_ctrl = indycam_s_ctrl,
	311	};
	312
	313	static const struct v4l2_subdev_ops indycam_ops = {
	314	.core = &indycam_core_ops,
	315	};
	316
cf4e9484 HV	317	static int indycam_probe(struct i2c_client *client,
cf4e9484 HV	318	const struct i2c_device_id *id)
d203a7ec RB	319	{
	320	int err = 0;
	321	struct indycam *camera;
2b80a191	322	struct v4l2_subdev *sd;
d203a7ec	323
cf4e9484 HV	324	v4l_info(client, "chip found @ 0x%x (%s)\n",
cf4e9484 HV	325	client->addr << 1, client->adapter->name);
d203a7ec	326
7408187d	327	camera = kzalloc(sizeof(struct indycam), GFP_KERNEL);
cf4e9484 HV	328	if (!camera)
cf4e9484 HV	329	return -ENOMEM;
d203a7ec	330
2b80a191 HV	331	sd = &camera->sd;
2b80a191 HV	332	v4l2_i2c_subdev_init(sd, client, &indycam_ops);
d203a7ec	333
a637a114 LM	334	camera->version = i2c_smbus_read_byte_data(client,
a637a114 LM	335	INDYCAM_REG_VERSION);
d203a7ec RB	336	if (camera->version != CAMERA_VERSION_INDY &&
d203a7ec RB	337	camera->version != CAMERA_VERSION_MOOSE) {
cf4e9484 HV	338	kfree(camera);
cf4e9484 HV	339	return -ENODEV;
d203a7ec	340	}
cf4e9484	341
d203a7ec RB	342	printk(KERN_INFO "IndyCam v%d.%d detected\n",
	343	INDYCAM_VERSION_MAJOR(camera->version),
	344	INDYCAM_VERSION_MINOR(camera->version));
	345
2b80a191	346	indycam_regdump(sd);
d203a7ec RB	347
d203a7ec RB	348	// initialize
2b80a191	349	err = indycam_write_block(sd, 0, sizeof(initseq), (u8 *)&initseq);
d203a7ec	350	if (err) {
c84e6036	351	printk(KERN_ERR "IndyCam initialization failed\n");
cf4e9484 HV	352	kfree(camera);
cf4e9484 HV	353	return -EIO;
d203a7ec RB	354	}
d203a7ec RB	355
2b80a191	356	indycam_regdump(sd);
d203a7ec RB	357
d203a7ec RB	358	// white balance
2b80a191	359	err = indycam_write_reg(sd, INDYCAM_REG_CONTROL,
d203a7ec RB	360	INDYCAM_CONTROL_AGCENA \| INDYCAM_CONTROL_AWBCTL);
d203a7ec RB	361	if (err) {
a637a114	362	printk(KERN_ERR "IndyCam: White balancing camera failed\n");
cf4e9484 HV	363	kfree(camera);
cf4e9484 HV	364	return -EIO;
d203a7ec RB	365	}
d203a7ec RB	366
2b80a191	367	indycam_regdump(sd);
d203a7ec RB	368
	369	printk(KERN_INFO "IndyCam initialized\n");
	370
	371	return 0;
d203a7ec RB	372	}
d203a7ec RB	373
cf4e9484	374	static int indycam_remove(struct i2c_client *client)
d203a7ec	375	{
2b80a191	376	struct v4l2_subdev *sd = i2c_get_clientdata(client);
d203a7ec	377
2b80a191 HV	378	v4l2_device_unregister_subdev(sd);
2b80a191 HV	379	kfree(to_indycam(sd));
d203a7ec RB	380	return 0;
	381	}
	382
cf4e9484	383	static int indycam_legacy_probe(struct i2c_adapter *adapter)
d203a7ec	384	{
cf4e9484	385	return adapter->id == I2C_HW_SGI_VINO;
d203a7ec RB	386	}
d203a7ec RB	387
cf4e9484 HV	388	static const struct i2c_device_id indycam_id[] = {
	389	{ "indycam", 0 },
	390	{ }
	391	};
	392	MODULE_DEVICE_TABLE(i2c, indycam_id);
	393
	394	static struct v4l2_i2c_driver_data v4l2_i2c_data = {
	395	.name = "indycam",
	396	.driverid = I2C_DRIVERID_INDYCAM,
	397	.command = indycam_command,
	398	.probe = indycam_probe,
	399	.remove = indycam_remove,
	400	.legacy_probe = indycam_legacy_probe,
	401	.id_table = indycam_id,
d203a7ec	402	};