/*
 * Handlers for board audio hooks, splitted from bttv-cards
 *
 * Copyright (c) 2006 Mauro Carvalho Chehab <mchehab@kernel.org>
 * This code is placed under the terms of the GNU General Public License
 */

#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");
}