/* * For the TDA9855 chip (afaik, only the Diamond DTV2000 has this) * This driver will not complain if used with a TDA9850 or any * other i2c device with the same address. * * Copyright (c) 1999 Steve VanDeBogart (vandebo@uclink.berkeley.edu) * This code is placed under the terms of the GNU General Public License * Based on tda8425.c by Greg Alexander (c) 1998 * * TODO: * Fix channel change bug - sound goes out when changeing channels, mute * and unmote to fix. * Fine tune sound * Get rest of capabilities into video_audio struct... * * Revision: 0.1 */ #include #include #include #include #include #include #include #include #include #include #include #include "bttv.h" #include "audiochip.h" MODULE_PARM(debug,"i"); static int debug = 0; /* insmod parameter */ /* Addresses to scan */ #define I2C_TDA9855_L 0xb4 #define I2C_TDA9855_H 0xb6 static unsigned short normal_i2c[] = {I2C_CLIENT_END}; static unsigned short normal_i2c_range[] = { I2C_TDA9855_L >> 1, I2C_TDA9855_H >> 1, I2C_CLIENT_END}; static unsigned short probe[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; static unsigned short probe_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; static unsigned short ignore[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; static unsigned short ignore_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; static unsigned short force[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; static struct i2c_client_address_data addr_data = { normal_i2c, normal_i2c_range, probe, probe_range, ignore, ignore_range, force }; struct tda9855 { int addr; int rvol, lvol; int bass, treble, sub; int c1, c2, c3; int a1, a2, a3; }; static struct i2c_driver driver; static struct i2c_client client_template; #define dprintk if (debug) printk /* subaddresses */ #define TDA9855_VR 0x00 /* Volume, right */ #define TDA9855_VL 0x01 /* Volume, left */ #define TDA9855_BA 0x02 /* Bass */ #define TDA9855_TR 0x03 /* Treble */ #define TDA9855_SW 0x04 /* Subwoofer - not connected on DTV2000 */ #define TDA9855_C1 0x05 /* Control 1 */ #define TDA9855_C2 0x06 /* Control 2 */ #define TDA9855_C3 0x07 /* Control 3 */ #define TDA9855_A1 0x08 /* Alignmnet 1*/ #define TDA9855_A2 0x09 /* Alignmnet 2*/ #define TDA9855_A3 0x0a /* Alignmnet 3*/ /* Masks for bits in subaddresses */ /* VR */ /* VL */ /* lower 7 bits control gain from -71dB (0x28) to 16dB (0x7f) * in 1dB steps - mute is 0x27 */ /* BA */ /* lower 5 bits control bass gain from -12dB (0x06) to 16.5dB (0x19) * in .5dB steps - 0 is 0x0E */ /* TR */ /* 4 bits << 1 control treble gain from -12dB (0x3) to 12dB (0xb) * in 3dB steps - 0 is 0x7 */ /* SW */ /* 4 bits << 2 control subwoofer/surraound gain from -14db (0x1) to 14db (0xf) * in 3dB steps - mute is 0x0 */ /* C1 */ #define TDA9855_MUTE 1<<7 /* GMU, Mute at outputs */ #define TDA9855_AVL 1<<6 /* AVL, Automatic Volume Level */ #define TDA9855_LOUD 1<<5 /* Loudness, 1==off */ #define TDA9855_SUR 1<<3 /* Surround / Subwoofer 1==.5(L-R) 0==.5(L+R) */ /* Bits 0 to 3 select various combinations * of line in and line out, only the * interesting ones are defined */ #define TDA9855_EXT 1<<2 /* Selects inputs LIR and LIL. Pins 41 & 12 */ #define TDA9855_INT 0 /* Selects inputs LOR and LOL. (internal) */ /* C2 */ #define TDA9855_SAP 3<<6 /* Selects SAP output, mute if not received */ #define TDA9855_STEREO 1<<6 /* Selects Stereo ouput, mono if not received */ #define TDA9855_MONO 0 /* Forces Mono output */ #define TDA9855_TZCM 1<<5 /* If set, don't mute till zero crossing */ #define TDA9855_VZCM 1<<4 /* If set, don't change volume till zero crossing*/ #define TDA9855_LMU 1<<3 /* Mute at LOR and LOL */ #define TDA9855_LINEAR 0 /* Linear Stereo */ #define TDA9855_PSEUDO 1 /* Pseudo Stereo */ #define TDA9855_SPAT_30 2 /* Spatial Stereo, 30% anti-phase crosstalk */ #define TDA9855_SPAT_50 3 /* Spatial Stereo, 52% anti-phase crosstalk */ #define TDA9855_E_MONO 7 /* Forced mono - mono select elseware, so useless*/ /* C3 */ /* lower 4 bits control input gain from -3.5dB (0x0) to 4dB (0xF) * in .5dB steps - 0 is 0x7 */ /* A1 and A2 (read/write) */ /* lower 5 bites are wideband and spectral expander alignment * from 0x00 to 0x1f - nominal at 0x0f and 0x10 (read/write) */ #define TDA9855_STP 1<<5 /* Stereo Pilot/detect (read-only) */ #define TDA9855_SAPP 1<<6 /* SAP Pilot/detect (read-only) */ #define TDA9855_STS 1<<7 /* Stereo trigger 1= <35mV 0= <30mV (write-only)*/ /* A3 */ /* lower 3 bits control timing current for alignment: -30% (0x0), -20% (0x1), * -10% (0x2), nominal (0x3), +10% (0x6), +20% (0x5), +30% (0x4) */ /* 2 bits << 5 control AVL attack time: 420ohm (0x0), 730ohm (0x2), * 1200ohm (0x1), 2100ohm (0x3) */ #define TDA9855_ADJ 1<<7 /* Stereo adjust on/off (wideband and spectral) */ /* Begin code */ static int tda9855_write(struct i2c_client *client, int subaddr, int val) { unsigned char buffer[2]; buffer[0] = subaddr; buffer[1] = val; if (2 != i2c_master_send(client,buffer,2)) { printk(KERN_WARNING "tda9855: I/O error, trying (write %d 0x%x)\n", subaddr, val); return -1; } return 0; } static int tda9855_read(struct i2c_client *client) { unsigned char buffer; if (1 != i2c_master_recv(client,&buffer,1)) { printk(KERN_WARNING "tda9855: I/O error, trying (read)\n"); return -1; } return buffer; } static int tda9855_set(struct i2c_client *client) { struct tda9855 *t = client->data; unsigned char buf[16]; dprintk(KERN_INFO "tda9855_set(0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x)\n",t->rvol,t->lvol,t->bass,t->treble,t->sub, t->c1,t->c2,t->c3,t->a1,t->a2,t->a3); buf[0] = TDA9855_VR; buf[1] = t->rvol; buf[2] = t->lvol; buf[3] = t->bass; buf[4] = t->treble; buf[5] = t->sub; buf[6] = t->c1; buf[7] = t->c2; buf[8] = t->c3; buf[9] = t->a1; buf[10] = t->a2; buf[11] = t->a3; if (12 != i2c_master_send(client,buf,12)) { printk(KERN_WARNING "tda9855: I/O error, trying tda9855_set\n"); return -1; } return 0; } static void do_tda9855_init(struct i2c_client *client) { struct tda9855 *t = client->data; t->rvol=0x6f; /* 0dB */ t->lvol=0x6f; /* 0dB */ t->bass=0x0e; /* 0dB */ t->treble=(0x07 << 1); /* 0dB */ t->sub=0x8 << 2; /* 0dB */ t->c1=TDA9855_MUTE | TDA9855_AVL | TDA9855_LOUD | TDA9855_INT; /* Set Mute, AVL, Loudness off, Internal sound */ t->c2=TDA9855_STEREO | TDA9855_LINEAR; /* Set Stereo liner mode */ t->c3=0x07; /* 0dB input gain */ t->a1=0x10; /* Select nominal wideband expander */ t->a2=0x10; /* Select nominal spectral expander and 30mV trigger */ t->a3=0x3; /* Set: nominal timinig current, 420ohm AVL attack */ tda9855_write(client, TDA9855_C1, TDA9855_MUTE); /* mute */ tda9855_set(client); } /* *********************** * * i2c interface functions * * *********************** */ static int tda9855_attach(struct i2c_adapter *adap, int addr, unsigned short flags, int kind) { struct tda9855 *t; struct i2c_client *client; client = kmalloc(sizeof *client,GFP_KERNEL); if (!client) return -ENOMEM; memcpy(client,&client_template,sizeof(struct i2c_client)); client->adapter = adap; client->addr = addr; client->data = t = kmalloc(sizeof *t,GFP_KERNEL); if (!t) return -ENOMEM; memset(t,0,sizeof *t); do_tda9855_init(client); MOD_INC_USE_COUNT; strcpy(client->name,"TDA9855"); printk(KERN_INFO "tda9855: init\n"); i2c_attach_client(client); return 0; } static int tda9855_probe(struct i2c_adapter *adap) { if (adap->id == (I2C_ALGO_BIT | I2C_HW_B_BT848)) return i2c_probe(adap, &addr_data, tda9855_attach); return 0; } static int tda9855_detach(struct i2c_client *client) { struct tda9855 *t = client->data; do_tda9855_init(client); i2c_detach_client(client); kfree(t); kfree(client); MOD_DEC_USE_COUNT; return 0; } static int tda9855_command(struct i2c_client *client, unsigned int cmd, void *arg) { struct tda9855 *t = client->data; #if 0 __u16 *sarg = arg; #endif switch (cmd) { /* --- v4l ioctls --- */ /* take care: bttv does userspace copying, we'll get a kernel pointer here... */ case VIDIOCGAUDIO: { struct video_audio *va = arg; int left,right; va->flags |= VIDEO_AUDIO_VOLUME | VIDEO_AUDIO_BASS | VIDEO_AUDIO_TREBLE; /* min is 0x27 max is 0x7f, vstep is 2e8 */ left = (t->lvol-0x27)*0x2e8; right = (t->rvol-0x27)*0x2e8; va->volume=MAX(left,right); va->balance=(32768*MIN(left,right))/ (va->volume ? va->volume : 1); va->balance=(leftbalance) : va->balance; va->bass = (t->bass-0x6)*0xccc; /* min 0x6 max is 0x19 */ va->treble = ((t->treble>>1)-0x3)*0x1c71; va->mode = ((TDA9855_STP | TDA9855_SAPP) & tda9855_read(client)) >> 4; va->mode |= VIDEO_SOUND_MONO; break; } case VIDIOCSAUDIO: { struct video_audio *va = arg; int left,right; left = (MIN(65536 - va->balance,32768) * va->volume) / 32768; right = (MIN(va->balance,32768) * va->volume) / 32768; t->lvol = left/0x2e8+0x27; t->rvol = right/0x2e8+0x27; t->bass = va->bass/0xccc+0x6; t->treble = (va->treble/0x1c71+0x3)<<1; tda9855_write(client,TDA9855_VL,t->lvol); tda9855_write(client,TDA9855_VR,t->rvol); tda9855_write(client,TDA9855_BA, t->bass); tda9855_write(client,TDA9855_TR,t->treble); switch (va->mode) { case VIDEO_SOUND_MONO: t->c2= TDA9855_MONO | (t->c2 & 0x3f); break; case VIDEO_SOUND_STEREO: t->c2= TDA9855_STEREO | (t->c2 & 0x3f); break; case VIDEO_SOUND_LANG1: t->c2= TDA9855_SAP | (t->c2 & 0x3f); break; } tda9855_write(client,TDA9855_C2,t->c2); break; } #if 0 /* --- old, obsolete interface --- */ case AUDC_GET_VOLUME_LEFT: *sarg = (t->lvol-0x27)*0x2e8; /* min is 0x27 max is 0x7f, vstep is 2e8 */ break; case AUDC_GET_VOLUME_RIGHT: *sarg = (t->rvol-0x27)*0x2e8; break; case AUDC_SET_VOLUME_LEFT: t->lvol = *sarg/0x2e8+0x27; break; case AUDC_SET_VOLUME_RIGHT: t->rvol = *sarg/0x2e8+0x27; break; case AUDC_GET_BASS: *sarg = (t->bass-0x6)*0xccc; /* min 0x6 max is 0x19 */ break; case AUDC_SET_BASS: t->bass = *sarg/0xccc+0x6; tda9855_write(client,TDA9855_BA, t->bass); break; case AUDC_GET_TREBLE: *sarg = ((t->treble>>1)-0x3)*0x1c71; break; case AUDC_SET_TREBLE: t->treble = (*sarg/0x1c71+0x3)<<1; tda9855_write(client,TDA9855_TR,t->treble); break; case AUDC_GET_STEREO: *sarg = ((TDA9855_STP | TDA9855_SAPP) & tda9855_read(client)) >> 4; if(*sarg==0) *sarg=VIDEO_SOUND_MONO; break; case AUDC_SET_STEREO: if(*sarg==VIDEO_SOUND_MONO) t->c2= TDA9855_MONO | (t->c2 & 0x3f); /* Mask out the sap and stereo bits and set mono */ else if(*sarg==VIDEO_SOUND_STEREO) t->c2= TDA9855_STEREO | (t->c2 & 0x3f); /* Mask out the sap and stereo bits and set stereo */ else if(*sarg==VIDEO_SOUND_LANG2) t->c2= TDA9855_SAP | (t->c2 & 0x3f); /* Mask out the sap and stereo bits and set sap */ tda9855_write(client,TDA9855_C2,t->c2); break; case AUDC_SET_INPUT: dprintk(KERN_INFO "tda9855: SET_INPUT with 0x%04x\n",*sarg); if((*sarg & (AUDIO_MUTE | AUDIO_OFF))!=0) t->c1|=TDA9855_MUTE; else t->c1= t->c1 & 0x7f; /* won't work --> (~TDA9855_MUTE); */ if((*sarg & AUDIO_INTERN) == AUDIO_INTERN) t->c1=(t->c1 & ~0x7) | TDA9855_INT; /* 0x7 is a mask for the int/ext */ if((*sarg & AUDIO_EXTERN) == AUDIO_EXTERN) t->c1=(t->c1 & ~0x7) | TDA9855_EXT; /* 0x7 is a mask for the int/ext */ tda9855_write(client,TDA9855_C1,t->c1); break; case AUDC_SWITCH_MUTE: if((t->c1 & ~TDA9855_MUTE) == 0) t->c1|=TDA9855_MUTE; else t->c1&=~TDA9855_MUTE; tda9855_write(client,TDA9855_C1,t->c1); break; /* TDA9855 unsupported: */ /* case AUDC_NEWCHANNEL: case AUDC_SET_RADIO: case AUDC_GET_DC: */ #endif default: /* nothing */ } return 0; } static struct i2c_driver driver = { "i2c tda9855 driver", I2C_DRIVERID_TDA9855, I2C_DF_NOTIFY, tda9855_probe, tda9855_detach, tda9855_command, }; static struct i2c_client client_template = { "(unset)", /* name */ -1, 0, 0, NULL, &driver }; #ifdef MODULE int init_module(void) #else int tda9855_init(void) #endif { i2c_add_driver(&driver); return 0; } #ifdef MODULE void cleanup_module(void) { i2c_del_driver(&driver); } #endif /* * Local variables: * c-basic-offset: 8 * End: */