/* $FreeBSD$ */ /* * 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 #include #include #include #include /* for DELAY */ #include #include #include /* extensions to ioctl_meteor.h */ #include #include #include #include #include /* * 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); */ }