drivers/media/pci/bt8xx/bttv-audio-hook.c - third_party/kernel - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 /*
  * Handlers for board audio hooks, split from bttv-cards
  *
  * Copyright (c) 2006 Mauro Carvalho Chehab <mchehab@kernel.org>
  */

 #include "bttv-audio-hook.h"

 #include <linux/delay.h>

 /* ----------------------------------------------------------------------- */
 /* winview                                                                 */

 void winview_volume(struct bttv *btv, __u16 volume)
 {
 	/* PT2254A programming Jon Tombs, jon@gte.esi.us.es */
 	int bits_out, loops, vol, data;

 	/* 32 levels logarithmic */
 	vol = 32 - ((volume>>11));
 	/* units */
 	bits_out = (PT2254_DBS_IN_2>>(vol%5));
 	/* tens */
 	bits_out |= (PT2254_DBS_IN_10>>(vol/5));
 	bits_out |= PT2254_L_CHANNEL | PT2254_R_CHANNEL;
 	data = gpio_read();
 	data &= ~(WINVIEW_PT2254_CLK| WINVIEW_PT2254_DATA|
 		  WINVIEW_PT2254_STROBE);
 	for (loops = 17; loops >= 0 ; loops--) {
 		if (bits_out & (1<<loops))
 			data |=  WINVIEW_PT2254_DATA;
 		else
 			data &= ~WINVIEW_PT2254_DATA;
 		gpio_write(data);
 		udelay(5);
 		data |= WINVIEW_PT2254_CLK;
 		gpio_write(data);
 		udelay(5);
 		data &= ~WINVIEW_PT2254_CLK;
 		gpio_write(data);
 	}
 	data |=  WINVIEW_PT2254_STROBE;
 	data &= ~WINVIEW_PT2254_DATA;
 	gpio_write(data);
 	udelay(10);
 	data &= ~WINVIEW_PT2254_STROBE;
 	gpio_write(data);
 }

 /* ----------------------------------------------------------------------- */
 /* mono/stereo control for various cards (which don't use i2c chips but    */
 /* connect something to the GPIO pins                                      */

 void gvbctv3pci_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
 {
 	unsigned int con;

 	if (!set) {
 		/* Not much to do here */
 		t->audmode = V4L2_TUNER_MODE_LANG1;
 		t->rxsubchans = V4L2_TUNER_SUB_MONO |
 				V4L2_TUNER_SUB_STEREO |
 				V4L2_TUNER_SUB_LANG1 |
 				V4L2_TUNER_SUB_LANG2;

 		return;
 	}

 	gpio_inout(0x300, 0x300);
 	switch (t->audmode) {
 	case V4L2_TUNER_MODE_LANG1:
 	default:
 		con = 0x000;
 		break;
 	case V4L2_TUNER_MODE_LANG2:
 		con = 0x300;
 		break;
 	case V4L2_TUNER_MODE_STEREO:
 		con = 0x200;
 		break;
 	}
 	gpio_bits(0x300, con);
 }

 void gvbctv5pci_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
 {
 	unsigned int val, con;

 	if (btv->radio_user)
 		return;

 	val = gpio_read();
 	if (set) {
 		switch (t->audmode) {
 		case V4L2_TUNER_MODE_LANG2:
 			con = 0x300;
 			break;
 		case V4L2_TUNER_MODE_LANG1_LANG2:
 			con = 0x100;
 			break;
 		default:
 			con = 0x000;
 			break;
 		}
 		if (con != (val & 0x300)) {
 			gpio_bits(0x300, con);
 			if (bttv_gpio)
 				bttv_gpio_tracking(btv, "gvbctv5pci");
 		}
 	} else {
 		switch (val & 0x70) {
 		  case 0x10:
 			t->rxsubchans = V4L2_TUNER_SUB_LANG1 |  V4L2_TUNER_SUB_LANG2;
 			t->audmode = V4L2_TUNER_MODE_LANG1_LANG2;
 			break;
 		  case 0x30:
 			t->rxsubchans = V4L2_TUNER_SUB_LANG2;
 			t->audmode = V4L2_TUNER_MODE_LANG1_LANG2;
 			break;
 		  case 0x50:
 			t->rxsubchans = V4L2_TUNER_SUB_LANG1;
 			t->audmode = V4L2_TUNER_MODE_LANG1_LANG2;
 			break;
 		  case 0x60:
 			t->rxsubchans = V4L2_TUNER_SUB_STEREO;
 			t->audmode = V4L2_TUNER_MODE_STEREO;
 			break;
 		  case 0x70:
 			t->rxsubchans = V4L2_TUNER_SUB_MONO;
 			t->audmode = V4L2_TUNER_MODE_MONO;
 			break;
 		  default:
 			t->rxsubchans = V4L2_TUNER_SUB_MONO |
 					 V4L2_TUNER_SUB_STEREO |
 					 V4L2_TUNER_SUB_LANG1 |
 					 V4L2_TUNER_SUB_LANG2;
 			t->audmode = V4L2_TUNER_MODE_LANG1;
 		}
 	}
 }

 /*
  * Mario Medina Nussbaum <medisoft@alohabbs.org.mx>
  *  I discover that on BT848_GPIO_DATA address a byte 0xcce enable stereo,
  *  0xdde enables mono and 0xccd enables sap
  *
  * Petr Vandrovec <VANDROVE@vc.cvut.cz>
  *  P.S.: At least mask in line above is wrong - GPIO pins 3,2 select
  *  input/output sound connection, so both must be set for output mode.
  *
  * Looks like it's needed only for the "tvphone", the "tvphone 98"
  * handles this with a tda9840
  *
  */

 void avermedia_tvphone_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
 {
 	int val;

 	if (!set) {
 		/* Not much to do here */
 		t->audmode = V4L2_TUNER_MODE_LANG1;
 		t->rxsubchans = V4L2_TUNER_SUB_MONO |
 				V4L2_TUNER_SUB_STEREO |
 				V4L2_TUNER_SUB_LANG1 |
 				V4L2_TUNER_SUB_LANG2;

 		return;
 	}

 	switch (t->audmode) {
 	case V4L2_TUNER_MODE_LANG2:   /* SAP */
 		val = 0x02;
 		break;
 	case V4L2_TUNER_MODE_STEREO:
 		val = 0x01;
 		break;
 	default:
 		return;
 	}
 	gpio_bits(0x03, val);
 	if (bttv_gpio)
 		bttv_gpio_tracking(btv, "avermedia");
 }


 void avermedia_tv_stereo_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
 {
 	int val = 0;

 	if (!set) {
 		/* Not much to do here */
 		t->audmode = V4L2_TUNER_MODE_LANG1;
 		t->rxsubchans = V4L2_TUNER_SUB_MONO |
 				V4L2_TUNER_SUB_STEREO |
 				V4L2_TUNER_SUB_LANG1 |
 				V4L2_TUNER_SUB_LANG2;

 		return;
 	}

 	switch (t->audmode) {
 	case V4L2_TUNER_MODE_LANG2:   /* SAP */
 		val = 0x01;
 		break;
 	case V4L2_TUNER_MODE_STEREO:
 		val = 0x02;
 		break;
 	default:
 		val = 0;
 		break;
 	}
 	btaor(val, ~0x03, BT848_GPIO_DATA);
 	if (bttv_gpio)
 		bttv_gpio_tracking(btv, "avermedia");
 }

 /* Lifetec 9415 handling */

 void lt9415_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
 {
 	int val = 0;

 	if (gpio_read() & 0x4000) {
 		t->audmode = V4L2_TUNER_MODE_MONO;
 		return;
 	}

 	if (!set) {
 		/* Not much to do here */
 		t->audmode = V4L2_TUNER_MODE_LANG1;
 		t->rxsubchans = V4L2_TUNER_SUB_MONO |
 				V4L2_TUNER_SUB_STEREO |
 				V4L2_TUNER_SUB_LANG1 |
 				V4L2_TUNER_SUB_LANG2;

 		return;
 	}

 	switch (t->audmode) {
 	case V4L2_TUNER_MODE_LANG2:	/* A2 SAP */
 		val = 0x0080;
 		break;
 	case V4L2_TUNER_MODE_STEREO:	/* A2 stereo */
 		val = 0x0880;
 		break;
 	default:
 		val = 0;
 		break;
 	}

 	gpio_bits(0x0880, val);
 	if (bttv_gpio)
 		bttv_gpio_tracking(btv, "lt9415");
 }

 /* TDA9821 on TerraTV+ Bt848, Bt878 */
 void terratv_audio(struct bttv *btv,  struct v4l2_tuner *t, int set)
 {
 	unsigned int con = 0;

 	if (!set) {
 		/* Not much to do here */
 		t->audmode = V4L2_TUNER_MODE_LANG1;
 		t->rxsubchans = V4L2_TUNER_SUB_MONO |
 				V4L2_TUNER_SUB_STEREO |
 				V4L2_TUNER_SUB_LANG1 |
 				V4L2_TUNER_SUB_LANG2;

 		return;
 	}

 	gpio_inout(0x180000, 0x180000);
 	switch (t->audmode) {
 	case V4L2_TUNER_MODE_LANG2:
 		con = 0x080000;
 		break;
 	case V4L2_TUNER_MODE_STEREO:
 		con = 0x180000;
 		break;
 	default:
 		con = 0;
 		break;
 	}
 	gpio_bits(0x180000, con);
 	if (bttv_gpio)
 		bttv_gpio_tracking(btv, "terratv");
 }


 void winfast2000_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
 {
 	unsigned long val;

 	if (!set) {
 		/* Not much to do here */
 		t->audmode = V4L2_TUNER_MODE_LANG1;
 		t->rxsubchans = V4L2_TUNER_SUB_MONO |
 				V4L2_TUNER_SUB_STEREO |
 				V4L2_TUNER_SUB_LANG1 |
 				V4L2_TUNER_SUB_LANG2;

 		return;
 	}

 	/*btor (0xc32000, BT848_GPIO_OUT_EN);*/
 	switch (t->audmode) {
 	case V4L2_TUNER_MODE_MONO:
 	case V4L2_TUNER_MODE_LANG1:
 		val = 0x420000;
 		break;
 	case V4L2_TUNER_MODE_LANG2: /* SAP */
 		val = 0x410000;
 		break;
 	case V4L2_TUNER_MODE_STEREO:
 		val = 0x020000;
 		break;
 	default:
 		return;
 	}

 	gpio_bits(0x430000, val);
 	if (bttv_gpio)
 		bttv_gpio_tracking(btv, "winfast2000");
 }

 /*
  * Dariusz Kowalewski <darekk@automex.pl>
  * sound control for Prolink PV-BT878P+9B (PixelView PlayTV Pro FM+NICAM
  * revision 9B has on-board TDA9874A sound decoder).
  *
  * Note: There are card variants without tda9874a. Forcing the "stereo sound route"
  *       will mute this cards.
  */
 void pvbt878p9b_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
 {
 	unsigned int val = 0;

 	if (btv->radio_user)
 		return;

 	if (!set) {
 		/* Not much to do here */
 		t->audmode = V4L2_TUNER_MODE_LANG1;
 		t->rxsubchans = V4L2_TUNER_SUB_MONO |
 				V4L2_TUNER_SUB_STEREO |
 				V4L2_TUNER_SUB_LANG1 |
 				V4L2_TUNER_SUB_LANG2;

 		return;
 	}

 	switch (t->audmode) {
 	case V4L2_TUNER_MODE_MONO:
 		val = 0x01;
 		break;
 	case V4L2_TUNER_MODE_LANG1:
 	case V4L2_TUNER_MODE_LANG2:
 	case V4L2_TUNER_MODE_STEREO:
 		val = 0x02;
 		break;
 	default:
 		return;
 	}

 	gpio_bits(0x03, val);
 	if (bttv_gpio)
 		bttv_gpio_tracking(btv, "pvbt878p9b");
 }

 /*
  * Dariusz Kowalewski <darekk@automex.pl>
  * sound control for FlyVideo 2000S (with tda9874 decoder)
  * based on pvbt878p9b_audio() - this is not tested, please fix!!!
  */
 void fv2000s_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
 {
 	unsigned int val;

 	if (btv->radio_user)
 		return;

 	if (!set) {
 		/* Not much to do here */
 		t->audmode = V4L2_TUNER_MODE_LANG1;
 		t->rxsubchans = V4L2_TUNER_SUB_MONO |
 				V4L2_TUNER_SUB_STEREO |
 				V4L2_TUNER_SUB_LANG1 |
 				V4L2_TUNER_SUB_LANG2;

 		return;
 	}

 	switch (t->audmode) {
 	case V4L2_TUNER_MODE_MONO:
 		val = 0x0000;
 		break;
 	case V4L2_TUNER_MODE_LANG1:
 	case V4L2_TUNER_MODE_LANG2:
 	case V4L2_TUNER_MODE_STEREO:
 		val = 0x1080; /*-dk-???: 0x0880, 0x0080, 0x1800 ... */
 		break;
 	default:
 		return;
 	}
 	gpio_bits(0x1800, val);
 	if (bttv_gpio)
 		bttv_gpio_tracking(btv, "fv2000s");
 }

 /*
  * sound control for Canopus WinDVR PCI
  * Masaki Suzuki <masaki@btree.org>
  */
 void windvr_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
 {
 	unsigned long val;

 	if (!set) {
 		/* Not much to do here */
 		t->audmode = V4L2_TUNER_MODE_LANG1;
 		t->rxsubchans = V4L2_TUNER_SUB_MONO |
 				V4L2_TUNER_SUB_STEREO |
 				V4L2_TUNER_SUB_LANG1 |
 				V4L2_TUNER_SUB_LANG2;

 		return;
 	}

 	switch (t->audmode) {
 	case V4L2_TUNER_MODE_MONO:
 		val = 0x040000;
 		break;
 	case V4L2_TUNER_MODE_LANG2:
 		val = 0x100000;
 		break;
 	default:
 		return;
 	}

 	gpio_bits(0x140000, val);
 	if (bttv_gpio)
 		bttv_gpio_tracking(btv, "windvr");
 }

 /*
  * sound control for AD-TVK503
  * Hiroshi Takekawa <sian@big.or.jp>
  */
 void adtvk503_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
 {
 	unsigned int con = 0xffffff;

 	/* btaor(0x1e0000, ~0x1e0000, BT848_GPIO_OUT_EN); */

 	if (!set) {
 		/* Not much to do here */
 		t->audmode = V4L2_TUNER_MODE_LANG1;
 		t->rxsubchans = V4L2_TUNER_SUB_MONO |
 				V4L2_TUNER_SUB_STEREO |
 				V4L2_TUNER_SUB_LANG1 |
 				V4L2_TUNER_SUB_LANG2;

 		return;
 	}

 	/* btor(***, BT848_GPIO_OUT_EN); */
 	switch (t->audmode) {
 	case V4L2_TUNER_MODE_LANG1:
 		con = 0x00000000;
 		break;
 	case V4L2_TUNER_MODE_LANG2:
 		con = 0x00180000;
 		break;
 	case V4L2_TUNER_MODE_STEREO:
 		con = 0x00000000;
 		break;
 	case V4L2_TUNER_MODE_MONO:
 		con = 0x00060000;
 		break;
 	default:
 		return;
 	}

 	gpio_bits(0x1e0000, con);
 	if (bttv_gpio)
 		bttv_gpio_tracking(btv, "adtvk503");
 }
	// SPDX-License-Identifier: GPL-2.0
	/*
	* Handlers for board audio hooks, split from bttv-cards
	*
	* Copyright (c) 2006 Mauro Carvalho Chehab <mchehab@kernel.org>
	*/

	#include "bttv-audio-hook.h"

	#include <linux/delay.h>

	/* ----------------------------------------------------------------------- */
	/* winview */

	void winview_volume(struct bttv *btv, __u16 volume)
	{
	/* PT2254A programming Jon Tombs, jon@gte.esi.us.es */
	int bits_out, loops, vol, data;

	/* 32 levels logarithmic */
	vol = 32 - ((volume>>11));
	/* units */
	bits_out = (PT2254_DBS_IN_2>>(vol%5));
	/* tens */
	bits_out \|= (PT2254_DBS_IN_10>>(vol/5));
	bits_out \|= PT2254_L_CHANNEL \| PT2254_R_CHANNEL;
	data = gpio_read();
	data &= ~(WINVIEW_PT2254_CLK\| WINVIEW_PT2254_DATA\|
	WINVIEW_PT2254_STROBE);
	for (loops = 17; loops >= 0 ; loops--) {
	if (bits_out & (1<<loops))
	data \|= WINVIEW_PT2254_DATA;
	else
	data &= ~WINVIEW_PT2254_DATA;
	gpio_write(data);
	udelay(5);
	data \|= WINVIEW_PT2254_CLK;
	gpio_write(data);
	udelay(5);
	data &= ~WINVIEW_PT2254_CLK;
	gpio_write(data);
	}
	data \|= WINVIEW_PT2254_STROBE;
	data &= ~WINVIEW_PT2254_DATA;
	gpio_write(data);
	udelay(10);
	data &= ~WINVIEW_PT2254_STROBE;
	gpio_write(data);
	}

	/* ----------------------------------------------------------------------- */
	/* mono/stereo control for various cards (which don't use i2c chips but */
	/* connect something to the GPIO pins */

	void gvbctv3pci_audio(struct bttv btv, struct v4l2_tuner t, int set)
	{
	unsigned int con;

	if (!set) {
	/* Not much to do here */
	t->audmode = V4L2_TUNER_MODE_LANG1;
	t->rxsubchans = V4L2_TUNER_SUB_MONO \|
	V4L2_TUNER_SUB_STEREO \|
	V4L2_TUNER_SUB_LANG1 \|
	V4L2_TUNER_SUB_LANG2;

	return;
	}

	gpio_inout(0x300, 0x300);
	switch (t->audmode) {
	case V4L2_TUNER_MODE_LANG1:
	default:
	con = 0x000;
	break;
	case V4L2_TUNER_MODE_LANG2:
	con = 0x300;
	break;
	case V4L2_TUNER_MODE_STEREO:
	con = 0x200;
	break;
	}
	gpio_bits(0x300, con);
	}

	void gvbctv5pci_audio(struct bttv btv, struct v4l2_tuner t, int set)
	{
	unsigned int val, con;

	if (btv->radio_user)
	return;

	val = gpio_read();
	if (set) {
	switch (t->audmode) {
	case V4L2_TUNER_MODE_LANG2:
	con = 0x300;
	break;
	case V4L2_TUNER_MODE_LANG1_LANG2:
	con = 0x100;
	break;
	default:
	con = 0x000;
	break;
	}
	if (con != (val & 0x300)) {
	gpio_bits(0x300, con);
	if (bttv_gpio)
	bttv_gpio_tracking(btv, "gvbctv5pci");
	}
	} else {
	switch (val & 0x70) {
	case 0x10:
	t->rxsubchans = V4L2_TUNER_SUB_LANG1 \| V4L2_TUNER_SUB_LANG2;
	t->audmode = V4L2_TUNER_MODE_LANG1_LANG2;
	break;
	case 0x30:
	t->rxsubchans = V4L2_TUNER_SUB_LANG2;
	t->audmode = V4L2_TUNER_MODE_LANG1_LANG2;
	break;
	case 0x50:
	t->rxsubchans = V4L2_TUNER_SUB_LANG1;
	t->audmode = V4L2_TUNER_MODE_LANG1_LANG2;
	break;
	case 0x60:
	t->rxsubchans = V4L2_TUNER_SUB_STEREO;
	t->audmode = V4L2_TUNER_MODE_STEREO;
	break;
	case 0x70:
	t->rxsubchans = V4L2_TUNER_SUB_MONO;
	t->audmode = V4L2_TUNER_MODE_MONO;
	break;
	default:
	t->rxsubchans = V4L2_TUNER_SUB_MONO \|
	V4L2_TUNER_SUB_STEREO \|
	V4L2_TUNER_SUB_LANG1 \|
	V4L2_TUNER_SUB_LANG2;
	t->audmode = V4L2_TUNER_MODE_LANG1;
	}
	}
	}

	/*
	* Mario Medina Nussbaum <medisoft@alohabbs.org.mx>
	* I discover that on BT848_GPIO_DATA address a byte 0xcce enable stereo,
	* 0xdde enables mono and 0xccd enables sap
	*
	* Petr Vandrovec <VANDROVE@vc.cvut.cz>
	* P.S.: At least mask in line above is wrong - GPIO pins 3,2 select
	* input/output sound connection, so both must be set for output mode.
	*
	* Looks like it's needed only for the "tvphone", the "tvphone 98"
	* handles this with a tda9840
	*
	*/

	void avermedia_tvphone_audio(struct bttv btv, struct v4l2_tuner t, int set)
	{
	int val;

	if (!set) {
	/* Not much to do here */
	t->audmode = V4L2_TUNER_MODE_LANG1;
	t->rxsubchans = V4L2_TUNER_SUB_MONO \|
	V4L2_TUNER_SUB_STEREO \|
	V4L2_TUNER_SUB_LANG1 \|
	V4L2_TUNER_SUB_LANG2;

	return;
	}

	switch (t->audmode) {
	case V4L2_TUNER_MODE_LANG2: /* SAP */
	val = 0x02;
	break;
	case V4L2_TUNER_MODE_STEREO:
	val = 0x01;
	break;
	default:
	return;
	}
	gpio_bits(0x03, val);
	if (bttv_gpio)
	bttv_gpio_tracking(btv, "avermedia");
	}


	void avermedia_tv_stereo_audio(struct bttv btv, struct v4l2_tuner t, int set)
	{
	int val = 0;

	if (!set) {
	/* Not much to do here */
	t->audmode = V4L2_TUNER_MODE_LANG1;
	t->rxsubchans = V4L2_TUNER_SUB_MONO \|
	V4L2_TUNER_SUB_STEREO \|
	V4L2_TUNER_SUB_LANG1 \|
	V4L2_TUNER_SUB_LANG2;

	return;
	}

	switch (t->audmode) {
	case V4L2_TUNER_MODE_LANG2: /* SAP */
	val = 0x01;
	break;
	case V4L2_TUNER_MODE_STEREO:
	val = 0x02;
	break;
	default:
	val = 0;
	break;
	}
	btaor(val, ~0x03, BT848_GPIO_DATA);
	if (bttv_gpio)
	bttv_gpio_tracking(btv, "avermedia");
	}

	/* Lifetec 9415 handling */

	void lt9415_audio(struct bttv btv, struct v4l2_tuner t, int set)
	{
	int val = 0;

	if (gpio_read() & 0x4000) {
	t->audmode = V4L2_TUNER_MODE_MONO;
	return;
	}

	if (!set) {
	/* Not much to do here */
	t->audmode = V4L2_TUNER_MODE_LANG1;
	t->rxsubchans = V4L2_TUNER_SUB_MONO \|
	V4L2_TUNER_SUB_STEREO \|
	V4L2_TUNER_SUB_LANG1 \|
	V4L2_TUNER_SUB_LANG2;

	return;
	}

	switch (t->audmode) {
	case V4L2_TUNER_MODE_LANG2: /* A2 SAP */
	val = 0x0080;
	break;
	case V4L2_TUNER_MODE_STEREO: /* A2 stereo */
	val = 0x0880;
	break;
	default:
	val = 0;
	break;
	}

	gpio_bits(0x0880, val);
	if (bttv_gpio)
	bttv_gpio_tracking(btv, "lt9415");
	}

	/* TDA9821 on TerraTV+ Bt848, Bt878 */
	void terratv_audio(struct bttv btv, struct v4l2_tuner t, int set)
	{
	unsigned int con = 0;

	if (!set) {
	/* Not much to do here */
	t->audmode = V4L2_TUNER_MODE_LANG1;
	t->rxsubchans = V4L2_TUNER_SUB_MONO \|
	V4L2_TUNER_SUB_STEREO \|
	V4L2_TUNER_SUB_LANG1 \|
	V4L2_TUNER_SUB_LANG2;

	return;
	}

	gpio_inout(0x180000, 0x180000);
	switch (t->audmode) {
	case V4L2_TUNER_MODE_LANG2:
	con = 0x080000;
	break;
	case V4L2_TUNER_MODE_STEREO:
	con = 0x180000;
	break;
	default:
	con = 0;
	break;
	}
	gpio_bits(0x180000, con);
	if (bttv_gpio)
	bttv_gpio_tracking(btv, "terratv");
	}


	void winfast2000_audio(struct bttv btv, struct v4l2_tuner t, int set)
	{
	unsigned long val;

	if (!set) {
	/* Not much to do here */
	t->audmode = V4L2_TUNER_MODE_LANG1;
	t->rxsubchans = V4L2_TUNER_SUB_MONO \|
	V4L2_TUNER_SUB_STEREO \|
	V4L2_TUNER_SUB_LANG1 \|
	V4L2_TUNER_SUB_LANG2;

	return;
	}

	/btor (0xc32000, BT848_GPIO_OUT_EN);/
	switch (t->audmode) {
	case V4L2_TUNER_MODE_MONO:
	case V4L2_TUNER_MODE_LANG1:
	val = 0x420000;
	break;
	case V4L2_TUNER_MODE_LANG2: /* SAP */
	val = 0x410000;
	break;
	case V4L2_TUNER_MODE_STEREO:
	val = 0x020000;
	break;
	default:
	return;
	}

	gpio_bits(0x430000, val);
	if (bttv_gpio)
	bttv_gpio_tracking(btv, "winfast2000");
	}

	/*
	* Dariusz Kowalewski <darekk@automex.pl>
	* sound control for Prolink PV-BT878P+9B (PixelView PlayTV Pro FM+NICAM
	* revision 9B has on-board TDA9874A sound decoder).
	*
	* Note: There are card variants without tda9874a. Forcing the "stereo sound route"
	* will mute this cards.
	*/
	void pvbt878p9b_audio(struct bttv btv, struct v4l2_tuner t, int set)
	{
	unsigned int val = 0;

	if (btv->radio_user)
	return;

	if (!set) {
	/* Not much to do here */
	t->audmode = V4L2_TUNER_MODE_LANG1;
	t->rxsubchans = V4L2_TUNER_SUB_MONO \|
	V4L2_TUNER_SUB_STEREO \|
	V4L2_TUNER_SUB_LANG1 \|
	V4L2_TUNER_SUB_LANG2;

	return;
	}

	switch (t->audmode) {
	case V4L2_TUNER_MODE_MONO:
	val = 0x01;
	break;
	case V4L2_TUNER_MODE_LANG1:
	case V4L2_TUNER_MODE_LANG2:
	case V4L2_TUNER_MODE_STEREO:
	val = 0x02;
	break;
	default:
	return;
	}

	gpio_bits(0x03, val);
	if (bttv_gpio)
	bttv_gpio_tracking(btv, "pvbt878p9b");
	}

	/*
	* Dariusz Kowalewski <darekk@automex.pl>
	* sound control for FlyVideo 2000S (with tda9874 decoder)
	* based on pvbt878p9b_audio() - this is not tested, please fix!!!
	*/
	void fv2000s_audio(struct bttv btv, struct v4l2_tuner t, int set)
	{
	unsigned int val;

	if (btv->radio_user)
	return;

	if (!set) {
	/* Not much to do here */
	t->audmode = V4L2_TUNER_MODE_LANG1;
	t->rxsubchans = V4L2_TUNER_SUB_MONO \|
	V4L2_TUNER_SUB_STEREO \|
	V4L2_TUNER_SUB_LANG1 \|
	V4L2_TUNER_SUB_LANG2;

	return;
	}

	switch (t->audmode) {
	case V4L2_TUNER_MODE_MONO:
	val = 0x0000;
	break;
	case V4L2_TUNER_MODE_LANG1:
	case V4L2_TUNER_MODE_LANG2:
	case V4L2_TUNER_MODE_STEREO:
	val = 0x1080; /-dk-???: 0x0880, 0x0080, 0x1800 ... /
	break;
	default:
	return;
	}
	gpio_bits(0x1800, val);
	if (bttv_gpio)
	bttv_gpio_tracking(btv, "fv2000s");
	}

	/*
	* sound control for Canopus WinDVR PCI
	* Masaki Suzuki <masaki@btree.org>
	*/
	void windvr_audio(struct bttv btv, struct v4l2_tuner t, int set)
	{
	unsigned long val;

	if (!set) {
	/* Not much to do here */
	t->audmode = V4L2_TUNER_MODE_LANG1;
	t->rxsubchans = V4L2_TUNER_SUB_MONO \|
	V4L2_TUNER_SUB_STEREO \|
	V4L2_TUNER_SUB_LANG1 \|
	V4L2_TUNER_SUB_LANG2;

	return;
	}

	switch (t->audmode) {
	case V4L2_TUNER_MODE_MONO:
	val = 0x040000;
	break;
	case V4L2_TUNER_MODE_LANG2:
	val = 0x100000;
	break;
	default:
	return;
	}

	gpio_bits(0x140000, val);
	if (bttv_gpio)
	bttv_gpio_tracking(btv, "windvr");
	}

	/*
	* sound control for AD-TVK503
	* Hiroshi Takekawa <sian@big.or.jp>
	*/
	void adtvk503_audio(struct bttv btv, struct v4l2_tuner t, int set)
	{
	unsigned int con = 0xffffff;

	/* btaor(0x1e0000, ~0x1e0000, BT848_GPIO_OUT_EN); */

	if (!set) {
	/* Not much to do here */
	t->audmode = V4L2_TUNER_MODE_LANG1;
	t->rxsubchans = V4L2_TUNER_SUB_MONO \|
	V4L2_TUNER_SUB_STEREO \|
	V4L2_TUNER_SUB_LANG1 \|
	V4L2_TUNER_SUB_LANG2;

	return;
	}

	/* btor(**, BT848_GPIO_OUT_EN); /
	switch (t->audmode) {
	case V4L2_TUNER_MODE_LANG1:
	con = 0x00000000;
	break;
	case V4L2_TUNER_MODE_LANG2:
	con = 0x00180000;
	break;
	case V4L2_TUNER_MODE_STEREO:
	con = 0x00000000;
	break;
	case V4L2_TUNER_MODE_MONO:
	con = 0x00060000;
	break;
	default:
	return;
	}

	gpio_bits(0x1e0000, con);
	if (bttv_gpio)
	bttv_gpio_tracking(btv, "adtvk503");
	}