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freebsd-nq/sys/dev/bktr/bktr_audio.c
Roger Hardiman 96476a9986 Split the Bt848 driver into seperate files for 
audio, tuner, card make, os dependent code and core bt848/i2c code.

Also, rewrite tuner code for FM Radio to make the code cleaner.
1999-09-26 22:06:20 +00:00

433 lines
12 KiB
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/* $FreeBSD$ */
/*
* This is part of the Driver for Video Capture Cards (Frame grabbers)
* and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
* chipset.
* Copyright Roger Hardiman and Amancio Hasty.
*
* bktr_audio : This deals with controlling the audio on TV cards,
* controlling the Audio Multiplexer (audio source selector).
* controlling any MSP34xx stereo audio decoders.
* initialising TDA98xx audio devices.
*
*/
/*
* 1. Redistributions of source code must retain the
* Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Amancio Hasty and
* Roger Hardiman
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/vnode.h>
#include <machine/clock.h> /* for DELAY */
#include <pci/pcivar.h>
#include <machine/ioctl_meteor.h>
#include <machine/ioctl_bt848.h> /* extensions to ioctl_meteor.h */
#include <dev/bktr/bktr_reg.h>
#include <dev/bktr/bktr_core.h>
#include <dev/bktr/bktr_tuner.h>
#include <dev/bktr/bktr_card.h>
#include <dev/bktr/bktr_audio.h>
/*
* Prototypes for the GV_BCTV specific functions.
*/
void set_bctv_audio( bktr_ptr_t bktr );
void bctv_gpio_write( bktr_ptr_t bktr, int port, int val );
/*int bctv_gpio_read( bktr_ptr_t bktr, int port );*/ /* Not used */
/*
* init_audio_devices
* Reset any MSP34xx or TDA98xx audio devices.
*/
void init_audio_devices( bktr_ptr_t bktr ) {
/* enable stereo if appropriate on TDA audio chip */
if ( bktr->card.dbx )
init_BTSC( bktr );
/* reset the MSP34xx stereo audio chip */
if ( bktr->card.msp3400c )
msp_reset( bktr );
}
/*
*
*/
#define AUDIOMUX_DISCOVER_NOT
int
set_audio( bktr_ptr_t bktr, int cmd )
{
bt848_ptr_t bt848;
u_long temp;
volatile u_char idx;
#if defined( AUDIOMUX_DISCOVER )
if ( cmd >= 200 )
cmd -= 200;
else
#endif /* AUDIOMUX_DISCOVER */
/* check for existance of audio MUXes */
if ( !bktr->card.audiomuxs[ 4 ] )
return( -1 );
switch (cmd) {
case AUDIO_TUNER:
#ifdef BKTR_REVERSEMUTE
bktr->audio_mux_select = 3;
#else
bktr->audio_mux_select = 0;
#endif
if (bktr->reverse_mute )
bktr->audio_mux_select = 0;
else
bktr->audio_mux_select = 3;
break;
case AUDIO_EXTERN:
bktr->audio_mux_select = 1;
break;
case AUDIO_INTERN:
bktr->audio_mux_select = 2;
break;
case AUDIO_MUTE:
bktr->audio_mute_state = TRUE; /* set mute */
break;
case AUDIO_UNMUTE:
bktr->audio_mute_state = FALSE; /* clear mute */
break;
default:
printf("bktr: audio cmd error %02x\n", cmd);
return( -1 );
}
/* Most cards have a simple audio multiplexer to select the
* audio source. The I/O_GV card has a more advanced multiplexer
* and requires special handling.
*/
if ( bktr->bt848_card == CARD_IO_GV ) {
set_bctv_audio( bktr );
return( 0 );
}
/* Proceed with the simpler audio multiplexer code for the majority
* of Bt848 cards.
*/
bt848 = bktr->base;
/*
* Leave the upper bits of the GPIO port alone in case they control
* something like the dbx or teletext chips. This doesn't guarantee
* success, but follows the rule of least astonishment.
*/
if ( bktr->audio_mute_state == TRUE ) {
#ifdef BKTR_REVERSEMUTE
idx = 0;
#else
idx = 3;
#endif
if (bktr->reverse_mute )
idx = 3;
else
idx = 0;
}
else
idx = bktr->audio_mux_select;
temp = bt848->gpio_data & ~bktr->card.gpio_mux_bits;
bt848->gpio_data =
#if defined( AUDIOMUX_DISCOVER )
bt848->gpio_data = temp | (cmd & 0xff);
printf("cmd: %d audio mux %x temp %x \n", cmd,bktr->card.audiomuxs[ idx ], temp );
#else
temp | bktr->card.audiomuxs[ idx ];
#endif /* AUDIOMUX_DISCOVER */
return( 0 );
}
/*
*
*/
void
temp_mute( bktr_ptr_t bktr, int flag )
{
static int muteState = FALSE;
if ( flag == TRUE ) {
muteState = bktr->audio_mute_state;
set_audio( bktr, AUDIO_MUTE ); /* prevent 'click' */
}
else {
tsleep( BKTR_SLEEP, PZERO, "tuning", hz/8 );
if ( muteState == FALSE )
set_audio( bktr, AUDIO_UNMUTE );
}
}
/* address of BTSC/SAP decoder chip */
#define TDA9850_WADDR 0xb6
#define TDA9850_RADDR 0xb7
/* registers in the TDA9850 BTSC/dbx chip */
#define CON1ADDR 0x04
#define CON2ADDR 0x05
#define CON3ADDR 0x06
#define CON4ADDR 0x07
#define ALI1ADDR 0x08
#define ALI2ADDR 0x09
#define ALI3ADDR 0x0a
/*
* initialise the dbx chip
* taken from the Linux bttv driver TDA9850 initialisation code
*/
void
init_BTSC( bktr_ptr_t bktr )
{
i2cWrite(bktr, TDA9850_WADDR, CON1ADDR, 0x08); /* noise threshold st */
i2cWrite(bktr, TDA9850_WADDR, CON2ADDR, 0x08); /* noise threshold sap */
i2cWrite(bktr, TDA9850_WADDR, CON3ADDR, 0x40); /* stereo mode */
i2cWrite(bktr, TDA9850_WADDR, CON4ADDR, 0x07); /* 0 dB input gain? */
i2cWrite(bktr, TDA9850_WADDR, ALI1ADDR, 0x10); /* wideband alignment? */
i2cWrite(bktr, TDA9850_WADDR, ALI2ADDR, 0x10); /* spectral alignment? */
i2cWrite(bktr, TDA9850_WADDR, ALI3ADDR, 0x03);
}
/*
* setup the dbx chip
* XXX FIXME: alot of work to be done here, this merely unmutes it.
*/
int
set_BTSC( bktr_ptr_t bktr, int control )
{
return( i2cWrite( bktr, TDA9850_WADDR, CON3ADDR, control ) );
}
/*
* CARD_GV_BCTV specific functions.
*/
#define BCTV_AUDIO_MAIN 0x10 /* main audio program */
#define BCTV_AUDIO_SUB 0x20 /* sub audio program */
#define BCTV_AUDIO_BOTH 0x30 /* main(L) + sub(R) program */
#define BCTV_GPIO_REG0 1
#define BCTV_GPIO_REG1 3
#define BCTV_GR0_AUDIO_MODE 3
#define BCTV_GR0_AUDIO_MAIN 0 /* main program */
#define BCTV_GR0_AUDIO_SUB 3 /* sub program */
#define BCTV_GR0_AUDIO_BOTH 1 /* main(L) + sub(R) */
#define BCTV_GR0_AUDIO_MUTE 4 /* audio mute */
#define BCTV_GR0_AUDIO_MONO 8 /* force mono */
void
set_bctv_audio( bktr_ptr_t bktr )
{
int data;
switch (bktr->audio_mux_select) {
case 1: /* external */
case 2: /* internal */
bctv_gpio_write(bktr, BCTV_GPIO_REG1, 0);
break;
default: /* tuner */
bctv_gpio_write(bktr, BCTV_GPIO_REG1, 1);
break;
}
/* switch (bktr->audio_sap_select) { */
switch (BCTV_AUDIO_BOTH) {
case BCTV_AUDIO_SUB:
data = BCTV_GR0_AUDIO_SUB;
break;
case BCTV_AUDIO_BOTH:
data = BCTV_GR0_AUDIO_BOTH;
break;
case BCTV_AUDIO_MAIN:
default:
data = BCTV_GR0_AUDIO_MAIN;
break;
}
if (bktr->audio_mute_state == TRUE)
data |= BCTV_GR0_AUDIO_MUTE;
bctv_gpio_write(bktr, BCTV_GPIO_REG0, data);
return;
}
/* gpio_data bit assignment */
#define BCTV_GPIO_ADDR_MASK 0x000300
#define BCTV_GPIO_WE 0x000400
#define BCTV_GPIO_OE 0x000800
#define BCTV_GPIO_VAL_MASK 0x00f000
#define BCTV_GPIO_PORT_MASK 3
#define BCTV_GPIO_ADDR_SHIFT 8
#define BCTV_GPIO_VAL_SHIFT 12
/* gpio_out_en value for read/write */
#define BCTV_GPIO_OUT_RMASK 0x000f00
#define BCTV_GPIO_OUT_WMASK 0x00ff00
#define BCTV_BITS 100
void
bctv_gpio_write( bktr_ptr_t bktr, int port, int val )
{
bt848_ptr_t bt848 = bktr->base;
u_long data, outbits;
port &= BCTV_GPIO_PORT_MASK;
switch (port) {
case 1:
case 3:
data = ((val << BCTV_GPIO_VAL_SHIFT) & BCTV_GPIO_VAL_MASK) |
((port << BCTV_GPIO_ADDR_SHIFT) & BCTV_GPIO_ADDR_MASK) |
BCTV_GPIO_WE | BCTV_GPIO_OE;
outbits = BCTV_GPIO_OUT_WMASK;
break;
default:
return;
}
bt848->gpio_out_en = 0;
bt848->gpio_data = data;
bt848->gpio_out_en = outbits;
DELAY(BCTV_BITS);
bt848->gpio_data = data & ~BCTV_GPIO_WE;
DELAY(BCTV_BITS);
bt848->gpio_data = data;
DELAY(BCTV_BITS);
bt848->gpio_data = ~0;
bt848->gpio_out_en = 0;
}
/* Not yet used
int
bctv_gpio_read( bktr_ptr_t bktr, int port )
{
bt848_ptr_t bt848 = bktr->base;
u_long data, outbits, ret;
port &= BCTV_GPIO_PORT_MASK;
switch (port) {
case 1:
case 3:
data = ((port << BCTV_GPIO_ADDR_SHIFT) & BCTV_GPIO_ADDR_MASK) |
BCTV_GPIO_WE | BCTV_GPIO_OE;
outbits = BCTV_GPIO_OUT_RMASK;
break;
default:
return( -1 );
}
bt848->gpio_out_en = 0;
bt848->gpio_data = data;
bt848->gpio_out_en = outbits;
DELAY(BCTV_BITS);
bt848->gpio_data = data & ~BCTV_GPIO_OE;
DELAY(BCTV_BITS);
ret = bt848->gpio_data;
DELAY(BCTV_BITS);
bt848->gpio_data = data;
DELAY(BCTV_BITS);
bt848->gpio_data = ~0;
bt848->gpio_out_en = 0;
return( (ret & BCTV_GPIO_VAL_MASK) >> BCTV_GPIO_VAL_SHIFT );
}
*/
/*
* setup the MSP34xx Stereo Audio Chip
* This uses the Auto Configuration Option on MSP3410D and MSP3415D chips
* and DBX mode selection for MSP3430G chips.
* For MSP3400C support, the full programming sequence is required and is
* not yet supported.
*/
/* Read the MSP version string */
void msp_read_id( bktr_ptr_t bktr ){
int rev1=0, rev2=0;
rev1 = msp_read(bktr, 0x12, 0x001e);
rev2 = msp_read(bktr, 0x12, 0x001f);
sprintf(bktr->msp_version_string, "34%02d%c-%c%d",
(rev2>>8)&0xff, (rev1&0xff)+'@', ((rev1>>8)&0xff)+'@', rev2&0x1f);
}
/* Configure the MSP chip to Auto-detect the audio format */
void msp_autodetect( bktr_ptr_t bktr ) {
if (strncmp("3430G", bktr->msp_version_string, 5) == 0){
/* For MSP3430G - countries with mono and DBX stereo */
msp_write(bktr, 0x10, 0x0030,0x2003);/* Enable Auto format detection */
msp_write(bktr, 0x10, 0x0020,0x0020);/* Standard Select Reg. = BTSC-Stereo*/
msp_write(bktr, 0x12, 0x000E,0x2403);/* darned if I know */
msp_write(bktr, 0x12, 0x0008,0x0320);/* Source select = (St or A) */
/* & Ch. Matrix = St */
msp_write(bktr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */
} else {
/* For MSP3410 / 3415 - countries with mono, stereo using 2 FM channels
and NICAM */
msp_write(bktr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */
msp_write(bktr, 0x10, 0x0020,0x0001);/* Enable Auto format detection */
msp_write(bktr, 0x10, 0x0021,0x0001);/* Auto selection of NICAM/MONO mode */
}
/* uncomment the following line to enable the MSP34xx 1Khz Tone Generator */
/* turn your speaker volume down low before trying this */
/* msp_write(bktr, 0x12, 0x0014, 0x7f40); */
}
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