tda9887.c

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		"44 MHz",
		"52 MHz",
		"52 MHz",
		"44 MHz",
	};

	tda9887_info("write: byte B 0x%02x\n",buf[1]);
	tda9887_info("  B0   video mode      : %s\n",
	       (buf[1] & 0x01) ? "video trap" : "sound trap");
	tda9887_info("  B1   auto mute fm    : %s\n",
	       (buf[1] & 0x02) ? "yes" : "no");
	tda9887_info("  B2   carrier mode    : %s\n",
	       (buf[1] & 0x04) ? "QSS" : "Intercarrier");
	tda9887_info("  B3-4 tv sound/radio  : %s\n",
	       sound[(buf[1] & 0x18) >> 3]);
	tda9887_info("  B5   force mute audio: %s\n",
	       (buf[1] & 0x20) ? "yes" : "no");
	tda9887_info("  B6   output port 1   : %s\n",
	       (buf[1] & 0x40) ? "high (inactive)" : "low (active)");
	tda9887_info("  B7   output port 2   : %s\n",
	       (buf[1] & 0x80) ? "high (inactive)" : "low (active)");

	tda9887_info("write: byte C 0x%02x\n",buf[2]);
	tda9887_info("  C0-4 top adjustment  : %s dB\n", adjust[buf[2] & 0x1f]);
	tda9887_info("  C5-6 de-emphasis     : %s\n", deemph[(buf[2] & 0x60) >> 5]);
	tda9887_info("  C7   audio gain      : %s\n",
	       (buf[2] & 0x80) ? "-6" : "0");

	tda9887_info("write: byte E 0x%02x\n",buf[3]);
	tda9887_info("  E0-1 sound carrier   : %s\n",
	       carrier[(buf[3] & 0x03)]);
	tda9887_info("  E6   l pll gating   : %s\n",
	       (buf[3] & 0x40) ? "36" : "13");

	if (buf[1] & 0x08) {
		/* radio */
		tda9887_info("  E2-4 video if        : %s\n",
		       rif[(buf[3] & 0x0c) >> 2]);
		tda9887_info("  E7   vif agc output  : %s\n",
		       (buf[3] & 0x80)
		       ? ((buf[3] & 0x10) ? "fm-agc radio" : "sif-agc radio")
		       : "fm radio carrier afc");
	} else {
		/* video */
		tda9887_info("  E2-4 video if        : %s\n",
		       vif[(buf[3] & 0x1c) >> 2]);
		tda9887_info("  E5   tuner gain      : %s\n",
		       (buf[3] & 0x80)
		       ? ((buf[3] & 0x20) ? "external" : "normal")
		       : ((buf[3] & 0x20) ? "minimum"  : "normal"));
		tda9887_info("  E7   vif agc output  : %s\n",
		       (buf[3] & 0x80)
		       ? ((buf[3] & 0x20)
			  ? "pin3 port, pin22 vif agc out"
			  : "pin22 port, pin3 vif acg ext in")
		       : "pin3+pin22 port");
	}
	tda9887_info("--\n");
}

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

static int tda9887_set_tvnorm(struct tuner *t, char *buf)
{
	struct tvnorm *norm = NULL;
	int i;

	if (t->mode == V4L2_TUNER_RADIO) {
		if (t->audmode == V4L2_TUNER_MODE_MONO)
			norm = &radio_mono;
		else
			norm = &radio_stereo;
	} else {
		for (i = 0; i < ARRAY_SIZE(tvnorms); i++) {
			if (tvnorms[i].std & t->std) {
				norm = tvnorms+i;
				break;
			}
		}
	}
	if (NULL == norm) {
		tda9887_dbg("Unsupported tvnorm entry - audio muted\n");
		return -1;
	}

	tda9887_dbg("configure for: %s\n",norm->name);
	buf[1] = norm->b;
	buf[2] = norm->c;
	buf[3] = norm->e;
	return 0;
}

static unsigned int port1  = UNSET;
static unsigned int port2  = UNSET;
static unsigned int qss    = UNSET;
static unsigned int adjust = UNSET;

module_param(port1, int, 0644);
module_param(port2, int, 0644);
module_param(qss, int, 0644);
module_param(adjust, int, 0644);

static int tda9887_set_insmod(struct tuner *t, char *buf)
{
	if (UNSET != port1) {
		if (port1)
			buf[1] |= cOutputPort1Inactive;
		else
			buf[1] &= ~cOutputPort1Inactive;
	}
	if (UNSET != port2) {
		if (port2)
			buf[1] |= cOutputPort2Inactive;
		else
			buf[1] &= ~cOutputPort2Inactive;
	}

	if (UNSET != qss) {
		if (qss)
			buf[1] |= cQSS;
		else
			buf[1] &= ~cQSS;
	}

	if (adjust >= 0x00 && adjust < 0x20) {
		buf[2] &= ~cTopMask;
		buf[2] |= adjust;
	}
	return 0;
}

static int tda9887_set_config(struct tuner *t, char *buf)
{
	if (t->tda9887_config & TDA9887_PORT1_ACTIVE)
		buf[1] &= ~cOutputPort1Inactive;
	if (t->tda9887_config & TDA9887_PORT1_INACTIVE)
		buf[1] |= cOutputPort1Inactive;
	if (t->tda9887_config & TDA9887_PORT2_ACTIVE)
		buf[1] &= ~cOutputPort2Inactive;
	if (t->tda9887_config & TDA9887_PORT2_INACTIVE)
		buf[1] |= cOutputPort2Inactive;

	if (t->tda9887_config & TDA9887_QSS)
		buf[1] |= cQSS;
	if (t->tda9887_config & TDA9887_INTERCARRIER)
		buf[1] &= ~cQSS;

	if (t->tda9887_config & TDA9887_AUTOMUTE)
		buf[1] |= cAutoMuteFmActive;
	if (t->tda9887_config & TDA9887_DEEMPHASIS_MASK) {
		buf[2] &= ~0x60;
		switch (t->tda9887_config & TDA9887_DEEMPHASIS_MASK) {
		case TDA9887_DEEMPHASIS_NONE:
			buf[2] |= cDeemphasisOFF;
			break;
		case TDA9887_DEEMPHASIS_50:
			buf[2] |= cDeemphasisON | cDeemphasis50;
			break;
		case TDA9887_DEEMPHASIS_75:
			buf[2] |= cDeemphasisON | cDeemphasis75;
			break;
		}
	}
	if (t->tda9887_config & TDA9887_TOP_SET) {
		buf[2] &= ~cTopMask;
		buf[2] |= (t->tda9887_config >> 8) & cTopMask;
	}
	if ((t->tda9887_config & TDA9887_INTERCARRIER_NTSC) && (t->std & V4L2_STD_NTSC))
		buf[1] &= ~cQSS;
	if (t->tda9887_config & TDA9887_GATING_18)
		buf[3] &= ~cGating_36;

	if (t->mode == V4L2_TUNER_RADIO) {
		if (t->tda9887_config & TDA9887_RIF_41_3) {
			buf[3] &= ~cVideoIFMask;
			buf[3] |= cRadioIF_41_30;
		}
		if (t->tda9887_config & TDA9887_GAIN_NORMAL)
			buf[3] &= ~cTunerGainLow;
	}

	return 0;
}

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

static int tda9887_status(struct tuner *t)
{
	struct tda9887_priv *priv = t->priv;
	unsigned char buf[1];
	int rc;

	memset(buf,0,sizeof(buf));
	if (1 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props,buf,1)))
		tda9887_info("i2c i/o error: rc == %d (should be 1)\n",rc);
	dump_read_message(t, buf);
	return 0;
}

static void tda9887_configure(struct tuner *t)
{
	struct tda9887_priv *priv = t->priv;
	int rc;

	memset(priv->data,0,sizeof(priv->data));
	tda9887_set_tvnorm(t,priv->data);

	/* A note on the port settings:
	   These settings tend to depend on the specifics of the board.
	   By default they are set to inactive (bit value 1) by this driver,
	   overwriting any changes made by the tvnorm. This means that it
	   is the responsibility of the module using the tda9887 to set
	   these values in case of changes in the tvnorm.
	   In many cases port 2 should be made active (0) when selecting
	   SECAM-L, and port 2 should remain inactive (1) for SECAM-L'.

	   For the other standards the tda9887 application note says that
	   the ports should be set to active (0), but, again, that may
	   differ depending on the precise hardware configuration.
	 */
	priv->data[1] |= cOutputPort1Inactive;
	priv->data[1] |= cOutputPort2Inactive;

	tda9887_set_config(t,priv->data);
	tda9887_set_insmod(t,priv->data);

	if (t->mode == T_STANDBY) {
		priv->data[1] |= cForcedMuteAudioON;
	}

	tda9887_dbg("writing: b=0x%02x c=0x%02x e=0x%02x\n",
		priv->data[1],priv->data[2],priv->data[3]);
	if (tuner_debug > 1)
		dump_write_message(t, priv->data);

	if (4 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,priv->data,4)))
		tda9887_info("i2c i/o error: rc == %d (should be 4)\n",rc);

	if (tuner_debug > 2) {
		msleep_interruptible(1000);
		tda9887_status(t);
	}
}

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

static void tda9887_tuner_status(struct tuner *t)
{
	struct tda9887_priv *priv = t->priv;
	tda9887_info("Data bytes: b=0x%02x c=0x%02x e=0x%02x\n", priv->data[1], priv->data[2], priv->data[3]);
}

static int tda9887_get_afc(struct tuner *t)
{
	struct tda9887_priv *priv = t->priv;
	static int AFC_BITS_2_kHz[] = {
		-12500,  -37500,  -62500,  -97500,
		-112500, -137500, -162500, -187500,
		187500,  162500,  137500,  112500,
		97500 ,  62500,   37500 ,  12500
	};
	int afc=0;
	__u8 reg = 0;

	if (1 == tuner_i2c_xfer_recv(&priv->i2c_props,&reg,1))
		afc = AFC_BITS_2_kHz[(reg>>1)&0x0f];

	return afc;
}

static void tda9887_standby(struct tuner *t)
{
	tda9887_configure(t);
}

static void tda9887_set_freq(struct tuner *t, unsigned int freq)
{
	tda9887_configure(t);
}

static void tda9887_release(struct tuner *t)
{
	kfree(t->priv);
	t->priv = NULL;
}

static struct tuner_operations tda9887_tuner_ops = {
	.set_tv_freq    = tda9887_set_freq,
	.set_radio_freq = tda9887_set_freq,
	.standby        = tda9887_standby,
	.tuner_status   = tda9887_tuner_status,
	.get_afc        = tda9887_get_afc,
	.release        = tda9887_release,
};

int tda9887_tuner_init(struct tuner *t)
{
	struct tda9887_priv *priv = NULL;

	priv = kzalloc(sizeof(struct tda9887_priv), GFP_KERNEL);
	if (priv == NULL)
		return -ENOMEM;
	t->priv = priv;

	priv->i2c_props.addr = t->i2c.addr;
	priv->i2c_props.adap = t->i2c.adapter;

	strlcpy(t->i2c.name, "tda9887", sizeof(t->i2c.name));

	tda9887_info("tda988[5/6/7] found @ 0x%x (%s)\n", t->i2c.addr,
						t->i2c.driver->driver.name);

	memcpy(&t->ops, &tda9887_tuner_ops, sizeof(struct tuner_operations));

	return 0;
}

/*
 * Overrides for Emacs so that we follow Linus's tabbing style.
 * ---------------------------------------------------------------------------
 * Local variables:
 * c-basic-offset: 8
 * End:
 */