saa7191.c

linux-2.6.15.6

		return saa7191_set_norm(client, SAA7191_NORM_PAL);
	}
}

static int saa7191_get_control(struct i2c_client *client,
			       struct saa7191_control *ctrl)
{
	u8 reg;
	int ret = 0;

	switch (ctrl->type) {
	case SAA7191_CONTROL_BANDPASS:
	case SAA7191_CONTROL_BANDPASS_WEIGHT:
	case SAA7191_CONTROL_CORING:
		reg = saa7191_read_reg(client, SAA7191_REG_LUMA);
		switch (ctrl->type) {
		case SAA7191_CONTROL_BANDPASS:
			ctrl->value = ((s32)reg & SAA7191_LUMA_BPSS_MASK)
				>> SAA7191_LUMA_BPSS_SHIFT;
			break;
		case SAA7191_CONTROL_BANDPASS_WEIGHT:
			ctrl->value = ((s32)reg & SAA7191_LUMA_APER_MASK)
				>> SAA7191_LUMA_APER_SHIFT;
			break;
		case SAA7191_CONTROL_CORING:
			ctrl->value = ((s32)reg & SAA7191_LUMA_CORI_MASK)
				>> SAA7191_LUMA_CORI_SHIFT;
			break;
		}
		break;
	case SAA7191_CONTROL_FORCE_COLOUR:
	case SAA7191_CONTROL_CHROMA_GAIN:
		reg = saa7191_read_reg(client, SAA7191_REG_GAIN);
		if (ctrl->type == SAA7191_CONTROL_FORCE_COLOUR)
			ctrl->value = ((s32)reg & SAA7191_GAIN_COLO) ? 1 : 0;
		else
			ctrl->value = ((s32)reg & SAA7191_GAIN_LFIS_MASK)
				>> SAA7191_GAIN_LFIS_SHIFT;
		break;
	case SAA7191_CONTROL_HUE:
		reg = saa7191_read_reg(client, SAA7191_REG_HUEC);
		if (reg < 0x80)
			reg += 0x80;
		else
			reg -= 0x80;
		ctrl->value = (s32)reg;
		break;
	case SAA7191_CONTROL_VTRC:
		reg = saa7191_read_reg(client, SAA7191_REG_STDC);
		ctrl->value = ((s32)reg & SAA7191_STDC_VTRC) ? 1 : 0;
		break;
	case SAA7191_CONTROL_LUMA_DELAY:
		reg = saa7191_read_reg(client, SAA7191_REG_CTL3);
		ctrl->value = ((s32)reg & SAA7191_CTL3_YDEL_MASK)
			>> SAA7191_CTL3_YDEL_SHIFT;
		if (ctrl->value >= 4)
			ctrl->value -= 8;
		break;
	case SAA7191_CONTROL_VNR:
		reg = saa7191_read_reg(client, SAA7191_REG_CTL4);
		ctrl->value = ((s32)reg & SAA7191_CTL4_VNOI_MASK)
			>> SAA7191_CTL4_VNOI_SHIFT;
		break;
	default:
		ret = -EINVAL;
	}

	return ret;
}

static int saa7191_set_control(struct i2c_client *client,
			       struct saa7191_control *ctrl)
{
	u8 reg;
	int ret = 0;

	switch (ctrl->type) {
	case SAA7191_CONTROL_BANDPASS:
	case SAA7191_CONTROL_BANDPASS_WEIGHT:
	case SAA7191_CONTROL_CORING:
		reg = saa7191_read_reg(client, SAA7191_REG_LUMA);
		switch (ctrl->type) {
		case SAA7191_CONTROL_BANDPASS:
			reg &= ~SAA7191_LUMA_BPSS_MASK;
			reg |= (ctrl->value << SAA7191_LUMA_BPSS_SHIFT)
				& SAA7191_LUMA_BPSS_MASK;
			break;
		case SAA7191_CONTROL_BANDPASS_WEIGHT:
			reg &= ~SAA7191_LUMA_APER_MASK;
			reg |= (ctrl->value << SAA7191_LUMA_APER_SHIFT)
				& SAA7191_LUMA_APER_MASK;
			break;
		case SAA7191_CONTROL_CORING:
			reg &= ~SAA7191_LUMA_CORI_MASK;
			reg |= (ctrl->value << SAA7191_LUMA_CORI_SHIFT)
				& SAA7191_LUMA_CORI_MASK;
			break;
		}
		ret = saa7191_write_reg(client, SAA7191_REG_LUMA, reg);
		break;
	case SAA7191_CONTROL_FORCE_COLOUR:
	case SAA7191_CONTROL_CHROMA_GAIN:
		reg = saa7191_read_reg(client, SAA7191_REG_GAIN);
		if (ctrl->type == SAA7191_CONTROL_FORCE_COLOUR) {
			if (ctrl->value)
				reg |= SAA7191_GAIN_COLO;
			else
				reg &= ~SAA7191_GAIN_COLO;
		} else {
			reg &= ~SAA7191_GAIN_LFIS_MASK;
			reg |= (ctrl->value << SAA7191_GAIN_LFIS_SHIFT)
				& SAA7191_GAIN_LFIS_MASK;
		}
		ret = saa7191_write_reg(client, SAA7191_REG_GAIN, reg);
		break;
	case SAA7191_CONTROL_HUE:
		reg = ctrl->value & 0xff;
		if (reg < 0x80)
			reg += 0x80;
		else
			reg -= 0x80;
		ret = saa7191_write_reg(client, SAA7191_REG_HUEC, reg);
		break;
	case SAA7191_CONTROL_VTRC:
		reg = saa7191_read_reg(client, SAA7191_REG_STDC);
		if (ctrl->value)
			reg |= SAA7191_STDC_VTRC;
		else
			reg &= ~SAA7191_STDC_VTRC;
		ret = saa7191_write_reg(client, SAA7191_REG_STDC, reg);
		break;
	case SAA7191_CONTROL_LUMA_DELAY: {
		s32 value = ctrl->value;
		if (value < 0)
			value += 8;
		reg = saa7191_read_reg(client, SAA7191_REG_CTL3);
		reg &= ~SAA7191_CTL3_YDEL_MASK;
		reg |= (value << SAA7191_CTL3_YDEL_SHIFT)
			& SAA7191_CTL3_YDEL_MASK;
		ret = saa7191_write_reg(client, SAA7191_REG_CTL3, reg);
		break;
	}
	case SAA7191_CONTROL_VNR:
		reg = saa7191_read_reg(client, SAA7191_REG_CTL4);
		reg &= ~SAA7191_CTL4_VNOI_MASK;
		reg |= (ctrl->value << SAA7191_CTL4_VNOI_SHIFT)
			& SAA7191_CTL4_VNOI_MASK;
		ret = saa7191_write_reg(client, SAA7191_REG_CTL4, reg);
		break;
	default:
		ret = -EINVAL;
	}

	return ret;
}

/* I2C-interface */

static int saa7191_attach(struct i2c_adapter *adap, int addr, int kind)
{
	int err = 0;
	struct saa7191 *decoder;
	struct i2c_client *client;

	printk(KERN_INFO "Philips SAA7191 driver version %s\n",
	       SAA7191_MODULE_VERSION);

	client = kmalloc(sizeof(*client), GFP_KERNEL);
	if (!client)
		return -ENOMEM;
	decoder = kmalloc(sizeof(*decoder), GFP_KERNEL);
	if (!decoder) {
		err = -ENOMEM;
		goto out_free_client;
	}

	memset(client, 0, sizeof(struct i2c_client));
	memset(decoder, 0, sizeof(struct saa7191));

	client->addr = addr;
	client->adapter = adap;
	client->driver = &i2c_driver_saa7191;
	client->flags = 0;
	strcpy(client->name, "saa7191 client");
	i2c_set_clientdata(client, decoder);

	decoder->client = client;

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

	err = saa7191_write_block(client, sizeof(initseq), (u8 *)initseq);
	if (err) {
		printk(KERN_ERR "SAA7191 initialization failed\n");
		goto out_detach_client;
	}

	printk(KERN_INFO "SAA7191 initialized\n");

	decoder->input = SAA7191_INPUT_COMPOSITE;
	decoder->norm = SAA7191_NORM_PAL;

	err = saa7191_autodetect_norm(client);
	if (err && (err != -EBUSY)) {
		printk(KERN_ERR "SAA7191: Signal auto-detection failed\n");
	}

	return 0;

out_detach_client:
	i2c_detach_client(client);
out_free_decoder:
	kfree(decoder);
out_free_client:
	kfree(client);
	return err;
}

static int saa7191_probe(struct i2c_adapter *adap)
{
	/* Always connected to VINO */
	if (adap->id == I2C_HW_SGI_VINO)
		return saa7191_attach(adap, SAA7191_ADDR, 0);
	/* Feel free to add probe here :-) */
	return -ENODEV;
}

static int saa7191_detach(struct i2c_client *client)
{
	struct saa7191 *decoder = i2c_get_clientdata(client);

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

static int saa7191_command(struct i2c_client *client, unsigned int cmd,
			   void *arg)
{
	struct saa7191 *decoder = i2c_get_clientdata(client);

	switch (cmd) {
	case DECODER_GET_CAPABILITIES: {
		struct video_decoder_capability *cap = arg;

		cap->flags  = VIDEO_DECODER_PAL | VIDEO_DECODER_NTSC |
			      VIDEO_DECODER_SECAM | VIDEO_DECODER_AUTO;
		cap->inputs = (client->adapter->id == I2C_HW_SGI_VINO) ? 2 : 1;
		cap->outputs = 1;
		break;
	}
	case DECODER_GET_STATUS: {
		int *iarg = arg;
		u8 status;
		int res = 0;

		if (saa7191_read_status(client, &status)) {
			return -EIO;
		}
		if ((status & SAA7191_STATUS_HLCK) == 0)
			res |= DECODER_STATUS_GOOD;
		if (status & SAA7191_STATUS_CODE)
			res |= DECODER_STATUS_COLOR;
		switch (decoder->norm) {
		case SAA7191_NORM_NTSC:
			res |= DECODER_STATUS_NTSC;
			break;
		case SAA7191_NORM_PAL:
			res |= DECODER_STATUS_PAL;
			break;
		case SAA7191_NORM_SECAM:
			res |= DECODER_STATUS_SECAM;
			break;
		case SAA7191_NORM_AUTO:
		default:
			if (status & SAA7191_STATUS_FIDT)
				res |= DECODER_STATUS_NTSC;
			else
				res |= DECODER_STATUS_PAL;
			break;
		}
		*iarg = res;
		break;
	}
	case DECODER_SET_NORM: {
		int *iarg = arg;

		switch (*iarg) {
		case VIDEO_MODE_AUTO:
			return saa7191_autodetect_norm(client);
		case VIDEO_MODE_PAL:
			return saa7191_set_norm(client, SAA7191_NORM_PAL);
		case VIDEO_MODE_NTSC:
			return saa7191_set_norm(client, SAA7191_NORM_NTSC);
		case VIDEO_MODE_SECAM:
			return saa7191_set_norm(client, SAA7191_NORM_SECAM);
		default:
			return -EINVAL;
		}
		break;
	}
	case DECODER_SET_INPUT:	{
		int *iarg = arg;

		switch (client->adapter->id) {
		case I2C_HW_SGI_VINO:
			return saa7191_set_input(client, *iarg);
		default:
			if (*iarg != 0)
				return -EINVAL;
		}
		break;
	}
	case DECODER_SET_OUTPUT: {
		int *iarg = arg;

		/* not much choice of outputs */
		if (*iarg != 0)
			return -EINVAL;
		break;
	}
	case DECODER_ENABLE_OUTPUT: {
		/* Always enabled */
		break;
	}
	case DECODER_SET_PICTURE: {
		struct video_picture *pic = arg;
		unsigned val;
		int err;

		val = (pic->hue >> 8) - 0x80;

		err = saa7191_write_reg(client, SAA7191_REG_HUEC, val);
		if (err)
			return -EIO;

		break;
	}
	case DECODER_SAA7191_GET_STATUS: {
		struct saa7191_status *status = arg;
		u8 status_reg;

		if (saa7191_read_status(client, &status_reg))
			return -EIO;

		status->signal = ((status_reg & SAA7191_STATUS_HLCK) == 0)
			? 1 : 0;
		status->signal_60hz = (status_reg & SAA7191_STATUS_FIDT)
			? 1 : 0;
		status->color = (status_reg & SAA7191_STATUS_CODE) ? 1 : 0;

		status->input = decoder->input;
		status->norm = decoder->norm;

		break;
	}
	case DECODER_SAA7191_SET_NORM: {
		int *norm = arg;

		switch (*norm) {
		case SAA7191_NORM_AUTO:
			return saa7191_autodetect_norm(client);
		case SAA7191_NORM_AUTO_EXT:
			return saa7191_autodetect_norm_extended(client);
		default:
			return saa7191_set_norm(client, *norm);
		}
	}
	case DECODER_SAA7191_GET_CONTROL: {
		return saa7191_get_control(client, arg);
	}
	case DECODER_SAA7191_SET_CONTROL: {
		return saa7191_set_control(client, arg);
	}
	default:
		return -EINVAL;
	}

	return 0;
}

static struct i2c_driver i2c_driver_saa7191 = {
	.owner		= THIS_MODULE,
	.name		= "saa7191",
	.id		= I2C_DRIVERID_SAA7191,
	.flags		= I2C_DF_NOTIFY,
	.attach_adapter = saa7191_probe,
	.detach_client	= saa7191_detach,
	.command	= saa7191_command
};

static int saa7191_init(void)
{
	return i2c_add_driver(&i2c_driver_saa7191);
}

static void saa7191_exit(void)
{
	i2c_del_driver(&i2c_driver_saa7191);
}

module_init(saa7191_init);
module_exit(saa7191_exit);