msp3400.c

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		       msp_init_data[type].dfp_src);
	msp3400c_write(client,I2C_MSP3400C_DFP, 0x000e,
		       msp_init_data[type].dfp_matrix);

	if (HAVE_NICAM(msp)) {
		/* nicam prescale */
		msp3400c_write(client,I2C_MSP3400C_DFP, 0x0010, 0x5a00); /* was: 0x3000 */
	}
}

static int best_audio_mode(int rxsubchans)
{
	if (rxsubchans & V4L2_TUNER_SUB_STEREO)
		return V4L2_TUNER_MODE_STEREO;
	if (rxsubchans & V4L2_TUNER_SUB_LANG1)
		return V4L2_TUNER_MODE_LANG1;
	if (rxsubchans & V4L2_TUNER_SUB_LANG2)
		return V4L2_TUNER_MODE_LANG2;
	return V4L2_TUNER_MODE_MONO;
}

/* turn on/off nicam + stereo */
static void msp3400c_set_audmode(struct i2c_client *client, int audmode)
{
	static char *strmode[16] = {
#if __GNUC__ >= 3
		[ 0 ... 15 ]               = "invalid",
#endif
		[ V4L2_TUNER_MODE_MONO   ] = "mono",
		[ V4L2_TUNER_MODE_STEREO ] = "stereo",
		[ V4L2_TUNER_MODE_LANG1  ] = "lang1",
		[ V4L2_TUNER_MODE_LANG2  ] = "lang2",
	};
	struct msp3400c *msp = i2c_get_clientdata(client);
	int nicam=0; /* channel source: FM/AM or nicam */
	int src=0;

	BUG_ON(msp->opmode == OPMODE_SIMPLER);
	msp->audmode = audmode;

	/* switch demodulator */
	switch (msp->mode) {
	case MSP_MODE_FM_TERRA:
		dprintk(KERN_DEBUG "msp3400: FM setstereo: %s\n",
			strmode[audmode]);
		msp3400c_setcarrier(client,msp->second,msp->main);
		switch (audmode) {
		case V4L2_TUNER_MODE_STEREO:
			msp3400c_write(client,I2C_MSP3400C_DFP, 0x000e, 0x3001);
			break;
		case V4L2_TUNER_MODE_MONO:
		case V4L2_TUNER_MODE_LANG1:
		case V4L2_TUNER_MODE_LANG2:
			msp3400c_write(client,I2C_MSP3400C_DFP, 0x000e, 0x3000);
			break;
		}
		break;
	case MSP_MODE_FM_SAT:
		dprintk(KERN_DEBUG "msp3400: SAT setstereo: %s\n",
			strmode[audmode]);
		switch (audmode) {
		case V4L2_TUNER_MODE_MONO:
			msp3400c_setcarrier(client, MSP_CARRIER(6.5), MSP_CARRIER(6.5));
			break;
		case V4L2_TUNER_MODE_STEREO:
			msp3400c_setcarrier(client, MSP_CARRIER(7.2), MSP_CARRIER(7.02));
			break;
		case V4L2_TUNER_MODE_LANG1:
			msp3400c_setcarrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
			break;
		case V4L2_TUNER_MODE_LANG2:
			msp3400c_setcarrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
			break;
		}
		break;
	case MSP_MODE_FM_NICAM1:
	case MSP_MODE_FM_NICAM2:
	case MSP_MODE_AM_NICAM:
		dprintk(KERN_DEBUG "msp3400: NICAM setstereo: %s\n",
			strmode[audmode]);
		msp3400c_setcarrier(client,msp->second,msp->main);
		if (msp->nicam_on)
			nicam=0x0100;
		break;
	case MSP_MODE_BTSC:
		dprintk(KERN_DEBUG "msp3400: BTSC setstereo: %s\n",
			strmode[audmode]);
		nicam=0x0300;
		break;
	case MSP_MODE_EXTERN:
		dprintk(KERN_DEBUG "msp3400: extern setstereo: %s\n",
			strmode[audmode]);
		nicam = 0x0200;
		break;
	case MSP_MODE_FM_RADIO:
		dprintk(KERN_DEBUG "msp3400: FM-Radio setstereo: %s\n",
			strmode[audmode]);
		break;
	default:
		dprintk(KERN_DEBUG "msp3400: mono setstereo\n");
		return;
	}

	/* switch audio */
	switch (audmode) {
	case V4L2_TUNER_MODE_STEREO:
		src = 0x0020 | nicam;
		break;
	case V4L2_TUNER_MODE_MONO:
		if (msp->mode == MSP_MODE_AM_NICAM) {
			dprintk("msp3400: switching to AM mono\n");
			/* AM mono decoding is handled by tuner, not MSP chip */
			/* SCART switching control register */
			msp3400c_set_scart(client,SCART_MONO,0);
			src = 0x0200;
			break;
		}
	case V4L2_TUNER_MODE_LANG1:
		src = 0x0000 | nicam;
		break;
	case V4L2_TUNER_MODE_LANG2:
		src = 0x0010 | nicam;
		break;
	}
	dprintk(KERN_DEBUG
		"msp3400: setstereo final source/matrix = 0x%x\n", src);

	if (dolby) {
		msp3400c_write(client,I2C_MSP3400C_DFP, 0x0008,0x0520);
		msp3400c_write(client,I2C_MSP3400C_DFP, 0x0009,0x0620);
		msp3400c_write(client,I2C_MSP3400C_DFP, 0x000a,src);
		msp3400c_write(client,I2C_MSP3400C_DFP, 0x000b,src);
	} else {
		msp3400c_write(client,I2C_MSP3400C_DFP, 0x0008,src);
		msp3400c_write(client,I2C_MSP3400C_DFP, 0x0009,src);
		msp3400c_write(client,I2C_MSP3400C_DFP, 0x000a,src);
		msp3400c_write(client,I2C_MSP3400C_DFP, 0x000b,src);
	}
}

static void
msp3400c_print_mode(struct msp3400c *msp)
{
	if (msp->main == msp->second) {
		printk(KERN_DEBUG "msp3400: mono sound carrier: %d.%03d MHz\n",
		       msp->main/910000,(msp->main/910)%1000);
	} else {
		printk(KERN_DEBUG "msp3400: main sound carrier: %d.%03d MHz\n",
		       msp->main/910000,(msp->main/910)%1000);
	}
	if (msp->mode == MSP_MODE_FM_NICAM1 ||
	    msp->mode == MSP_MODE_FM_NICAM2)
		printk(KERN_DEBUG "msp3400: NICAM/FM carrier   : %d.%03d MHz\n",
		       msp->second/910000,(msp->second/910)%1000);
	if (msp->mode == MSP_MODE_AM_NICAM)
		printk(KERN_DEBUG "msp3400: NICAM/AM carrier   : %d.%03d MHz\n",
		       msp->second/910000,(msp->second/910)%1000);
	if (msp->mode == MSP_MODE_FM_TERRA &&
	    msp->main != msp->second) {
		printk(KERN_DEBUG "msp3400: FM-stereo carrier : %d.%03d MHz\n",
		       msp->second/910000,(msp->second/910)%1000);
	}
}

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

struct REGISTER_DUMP {
	int   addr;
	char *name;
};

static int
autodetect_stereo(struct i2c_client *client)
{
	struct msp3400c *msp = i2c_get_clientdata(client);
	int val;
	int rxsubchans = msp->rxsubchans;
	int newnicam   = msp->nicam_on;
	int update = 0;

	switch (msp->mode) {
	case MSP_MODE_FM_TERRA:
		val = msp3400c_read(client, I2C_MSP3400C_DFP, 0x18);
		if (val > 32767)
			val -= 65536;
		dprintk(KERN_DEBUG
			"msp34xx: stereo detect register: %d\n",val);
		if (val > 4096) {
			rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_MONO;
		} else if (val < -4096) {
			rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
		} else {
			rxsubchans = V4L2_TUNER_SUB_MONO;
		}
		newnicam = 0;
		break;
	case MSP_MODE_FM_NICAM1:
	case MSP_MODE_FM_NICAM2:
	case MSP_MODE_AM_NICAM:
		val = msp3400c_read(client, I2C_MSP3400C_DEM, 0x23);
		dprintk(KERN_DEBUG
			"msp34xx: nicam sync=%d, mode=%d\n",
			val & 1, (val & 0x1e) >> 1);

		if (val & 1) {
			/* nicam synced */
			switch ((val & 0x1e) >> 1)  {
			case 0:
			case 8:
				rxsubchans = V4L2_TUNER_SUB_STEREO;
				break;
			case 1:
			case 9:
				rxsubchans = V4L2_TUNER_SUB_MONO
					| V4L2_TUNER_SUB_LANG1;
				break;
			case 2:
			case 10:
				rxsubchans = V4L2_TUNER_SUB_MONO
					| V4L2_TUNER_SUB_LANG1
					| V4L2_TUNER_SUB_LANG2;
				break;
			default:
				rxsubchans = V4L2_TUNER_SUB_MONO;
				break;
			}
			newnicam=1;
		} else {
			newnicam = 0;
			rxsubchans = V4L2_TUNER_SUB_MONO;
		}
		break;
	case MSP_MODE_BTSC:
		val = msp3400c_read(client, I2C_MSP3400C_DEM, 0x200);
		dprintk(KERN_DEBUG
			"msp3410: status=0x%x (pri=%s, sec=%s, %s%s%s)\n",
			val,
			(val & 0x0002) ? "no"     : "yes",
			(val & 0x0004) ? "no"     : "yes",
			(val & 0x0040) ? "stereo" : "mono",
			(val & 0x0080) ? ", nicam 2nd mono" : "",
			(val & 0x0100) ? ", bilingual/SAP"  : "");
		rxsubchans = V4L2_TUNER_SUB_MONO;
		if (val & 0x0040) rxsubchans |= V4L2_TUNER_SUB_STEREO;
		if (val & 0x0100) rxsubchans |= V4L2_TUNER_SUB_LANG1;
		break;
	}
	if (rxsubchans != msp->rxsubchans) {
		update = 1;
		dprintk(KERN_DEBUG "msp34xx: watch: rxsubchans %d => %d\n",
			msp->rxsubchans,rxsubchans);
		msp->rxsubchans = rxsubchans;
	}
	if (newnicam != msp->nicam_on) {
		update = 1;
		dprintk(KERN_DEBUG "msp34xx: watch: nicam %d => %d\n",
			msp->nicam_on,newnicam);
		msp->nicam_on = newnicam;
	}
	return update;
}

/*
 * A kernel thread for msp3400 control -- we don't want to block the
 * in the ioctl while doing the sound carrier & stereo detect
 */

static int msp34xx_sleep(struct msp3400c *msp, int timeout)
{
	DECLARE_WAITQUEUE(wait, current);

	add_wait_queue(&msp->wq, &wait);
	if (!kthread_should_stop()) {
		if (timeout < 0) {
			set_current_state(TASK_INTERRUPTIBLE);
			schedule();
		} else {
			set_current_state(TASK_INTERRUPTIBLE);
			schedule_timeout(msecs_to_jiffies(timeout));
		}
	}

	remove_wait_queue(&msp->wq, &wait);
	try_to_freeze();
	return msp->restart;
}

/* stereo/multilang monitoring */
static void watch_stereo(struct i2c_client *client)
{
	struct msp3400c *msp = i2c_get_clientdata(client);

	if (autodetect_stereo(client))
		msp3400c_set_audmode(client,best_audio_mode(msp->rxsubchans));
	if (once)
		msp->watch_stereo = 0;
}

static int msp3400c_thread(void *data)
{
	struct i2c_client *client = data;
	struct msp3400c *msp = i2c_get_clientdata(client);
	struct CARRIER_DETECT *cd;
	int count, max1,max2,val1,val2, val,this;

	printk("msp3400: kthread started\n");
	for (;;) {
		d2printk("msp3400: thread: sleep\n");
		msp34xx_sleep(msp,-1);
		d2printk("msp3400: thread: wakeup\n");

	restart:
		dprintk("msp3410: thread: restart scan\n");
		msp->restart = 0;
		if (kthread_should_stop())
			break;

		if (VIDEO_MODE_RADIO == msp->norm ||
		    MSP_MODE_EXTERN  == msp->mode) {
			/* no carrier scan, just unmute */
			printk("msp3400: thread: no carrier scan\n");
			msp3400c_setvolume(client, msp->muted,
					   msp->volume, msp->balance);
			continue;
		}

		/* mute */
		msp3400c_setvolume(client, msp->muted, 0, 0);
		msp3400c_setmode(client, MSP_MODE_AM_DETECT /* +1 */ );
		val1 = val2 = 0;
		max1 = max2 = -1;
		msp->watch_stereo = 0;

		/* some time for the tuner to sync */
		if (msp34xx_sleep(msp,200))
			goto restart;

		/* carrier detect pass #1 -- main carrier */
		cd = carrier_detect_main; count = CARRIER_COUNT(carrier_detect_main);

		if (amsound && (msp->norm == VIDEO_MODE_SECAM)) {
			/* autodetect doesn't work well with AM ... */
			max1 = 3;
			count = 0;
			dprintk("msp3400: AM sound override\n");
		}

		for (this = 0; this < count; this++) {
			msp3400c_setcarrier(client, cd[this].cdo,cd[this].cdo);
			if (msp34xx_sleep(msp,100))
				goto restart;
			val = msp3400c_read(client, I2C_MSP3400C_DFP, 0x1b);
			if (val > 32767)
				val -= 65536;
			if (val1 < val)
				val1 = val, max1 = this;
			dprintk("msp3400: carrier1 val: %5d / %s\n", val,cd[this].name);
		}

		/* carrier detect pass #2 -- second (stereo) carrier */
		switch (max1) {
		case 1: /* 5.5 */
			cd = carrier_detect_55;
			count = CARRIER_COUNT(carrier_detect_55);
			break;
		case 3: /* 6.5 */
			cd = carrier_detect_65;
			count = CARRIER_COUNT(carrier_detect_65);
			break;
		case 0: /* 4.5 */
		case 2: /* 6.0 */
		default:
			cd = NULL; count = 0;
			break;
		}

		if (amsound && (msp->norm == VIDEO_MODE_SECAM)) {
			/* autodetect doesn't work well with AM ... */
			cd = NULL; count = 0; max2 = 0;
		}
		for (this = 0; this < count; this++) {
			msp3400c_setcarrier(client, cd[this].cdo,cd[this].cdo);
			if (msp34xx_sleep(msp,100))
				goto restart;
			val = msp3400c_read(client, I2C_MSP3400C_DFP, 0x1b);
			if (val > 32767)
				val -= 65536;
			if (val2 < val)
				val2 = val, max2 = this;
			dprintk("msp3400: carrier2 val: %5d / %s\n", val,cd[this].name);
		}

		/* programm the msp3400 according to the results */
		msp->main   = carrier_detect_main[max1].cdo;
		switch (max1) {
		case 1: /* 5.5 */
			if (max2 == 0) {
				/* B/G FM-stereo */
				msp->second = carrier_detect_55[max2].cdo;
				msp3400c_setmode(client, MSP_MODE_FM_TERRA);
				msp->nicam_on = 0;
				msp3400c_set_audmode(client, V4L2_TUNER_MODE_MONO);
				msp->watch_stereo = 1;
			} else if (max2 == 1 && HAVE_NICAM(msp)) {
				/* B/G NICAM */
				msp->second = carrier_detect_55[max2].cdo;
				msp3400c_setmode(client, MSP_MODE_FM_NICAM1);
				msp->nicam_on = 1;
				msp3400c_setcarrier(client, msp->second, msp->main);
				msp->watch_stereo = 1;
			} else {
				goto no_second;
			}
			break;
		case 2: /* 6.0 */
			/* PAL I NICAM */
			msp->second = MSP_CARRIER(6.552);
			msp3400c_setmode(client, MSP_MODE_FM_NICAM2);
			msp->nicam_on = 1;
			msp3400c_setcarrier(client, msp->second, msp->main);
			msp->watch_stereo = 1;
			break;
		case 3: /* 6.5 */
			if (max2 == 1 || max2 == 2) {
				/* D/K FM-stereo */
				msp->second = carrier_detect_65[max2].cdo;
				msp3400c_setmode(client, MSP_MODE_FM_TERRA);
				msp->nicam_on = 0;
				msp3400c_set_audmode(client, V4L2_TUNER_MODE_MONO);
				msp->watch_stereo = 1;
			} else if (max2 == 0 &&
				   msp->norm == VIDEO_MODE_SECAM) {
				/* L NICAM or AM-mono */
				msp->second = carrier_detect_65[max2].cdo;
				msp3400c_setmode(client, MSP_MODE_AM_NICAM);
				msp->nicam_on = 0;
				msp3400c_set_audmode(client, V4L2_TUNER_MODE_MONO);
				msp3400c_setcarrier(client, msp->second, msp->main);
				/* volume prescale for SCART (AM mono input) */
				msp3400c_write(client,I2C_MSP3400C_DFP, 0x000d, 0x1900);
				msp->watch_stereo = 1;
			} else if (max2 == 0 && HAVE_NICAM(msp)) {
				/* D/K NICAM */
				msp->second = carrier_detect_65[max2].cdo;
				msp3400c_setmode(client, MSP_MODE_FM_NICAM1);
				msp->nicam_on = 1;
				msp3400c_setcarrier(client, msp->second, msp->main);
				msp->watch_stereo = 1;
			} else {
				goto no_second;
			}
			break;
		case 0: /* 4.5 */
		default:
		no_second:
			msp->second = carrier_detect_main[max1].cdo;
			msp3400c_setmode(client, MSP_MODE_FM_TERRA);
			msp->nicam_on = 0;
			msp3400c_setcarrier(client, msp->second, msp->main);
			msp->rxsubchans = V4L2_TUNER_SUB_MONO;
			msp3400c_set_audmode(client, V4L2_TUNER_MODE_MONO);
			break;
		}

		/* unmute */
		msp3400c_setvolume(client, msp->muted,