/* * experimental driver for simple i2c audio chips. * * Copyright (c) 2000 Gerd Knorr * based on code by: * Eric Sandeen (eric_sandeen@bigfoot.com) * Steve VanDeBogart (vandebo@uclink.berkeley.edu) * Greg Alexander (galexand@acm.org) * * This code is placed under the terms of the GNU General Public License * * OPTIONS: * debug - set to 1 if you'd like to see debug messages * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "audiochip.h" #include "tvaudio.h" #include "id.h" /* ---------------------------------------------------------------------- */ /* insmod args */ MODULE_PARM(debug,"i"); static int debug = 0; /* insmod parameter */ #define dprintk if (debug) printk /* ---------------------------------------------------------------------- */ /* our structs */ #define MAXREGS 64 struct CHIPSTATE; typedef int (*getvalue)(int); typedef int (*checkit)(struct CHIPSTATE*); typedef int (*getmode)(struct CHIPSTATE*); typedef void (*setmode)(struct CHIPSTATE*, int mode); typedef void (*checkmode)(struct CHIPSTATE*); /* i2c command */ typedef struct AUDIOCMD { int count; /* # of bytes to send */ unsigned char bytes[MAXREGS+1]; /* addr, data, data, ... */ } audiocmd; /* chip description */ struct CHIPDESC { char *name; /* chip name */ int id; /* ID */ int addr_lo, addr_hi; /* i2c address range */ int registers; /* # of registers */ int *insmodopt; checkit checkit; int flags; #define CHIP_HAS_VOLUME 1 #define CHIP_HAS_BASSTREBLE 2 #define CHIP_HAS_INPUTSEL 4 /* various i2c command sequences */ audiocmd init; /* which register has which value */ int leftreg,rightreg,treblereg,bassreg; /* initialize with (defaults to 65535/65535/32768/32768 */ int leftinit,rightinit,trebleinit,bassinit; /* functions to convert the values (v4l -> chip) */ getvalue volfunc,treblefunc,bassfunc; /* get/set mode */ getmode getmode; setmode setmode; /* check / autoswitch audio after channel switches */ checkmode checkmode; /* input switch register + values for v4l inputs */ int inputreg; int inputmap[8]; int inputmute; }; static struct CHIPDESC chiplist[]; /* current state of the chip */ struct CHIPSTATE { struct i2c_client c; /* index into CHIPDESC array */ int type; /* shadow register set */ audiocmd shadow; /* current settings */ __u16 left,right,treble,bass,mode; /* thread */ struct task_struct *thread; struct semaphore *notify; wait_queue_head_t wq; struct timer_list wt; int done; }; /* ---------------------------------------------------------------------- */ /* i2c adresses */ static unsigned short normal_i2c[] = { I2C_TDA8425 >> 1, I2C_TEA6300 >> 1, I2C_TEA6420 >> 1, I2C_TDA9840 >> 1, I2C_TDA985x_L >> 1, I2C_TDA985x_H >> 1, I2C_PIC16C54 >> 1, I2C_CLIENT_END }; static unsigned short normal_i2c_range[2] = { I2C_CLIENT_END, 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 }; static struct i2c_driver driver; static struct i2c_client client_template; /* ---------------------------------------------------------------------- */ /* i2c I/O functions */ static int chip_write(struct CHIPSTATE *chip, int subaddr, int val) { unsigned char buffer[2]; if (-1 == subaddr) { dprintk("%s: chip_write: 0x%x\n", chip->c.name, val); chip->shadow.bytes[1] = val; buffer[0] = val; if (1 != i2c_master_send(&chip->c,buffer,1)) { printk(KERN_WARNING "%s: I/O error (write 0x%x)\n", chip->c.name, val); return -1; } } else { dprintk("%s: chip_write: reg%d=0x%x\n", chip->c.name, subaddr, val); chip->shadow.bytes[subaddr+1] = val; buffer[0] = subaddr; buffer[1] = val; if (2 != i2c_master_send(&chip->c,buffer,2)) { printk(KERN_WARNING "%s: I/O error (write reg%d=0x%x)\n", chip->c.name, subaddr, val); return -1; } } return 0; } static int chip_read(struct CHIPSTATE *chip) { unsigned char buffer; if (1 != i2c_master_recv(&chip->c,&buffer,1)) { printk(KERN_WARNING "%s: I/O error (read)\n", chip->c.name); return -1; } dprintk("%s: chip_read: 0x%x\n",chip->c.name,buffer); return buffer; } static int chip_read2(struct CHIPSTATE *chip, int subaddr) { unsigned char write[1]; unsigned char read[1]; struct i2c_msg msgs[2] = { { chip->c.addr, 0, 1, write }, { chip->c.addr, I2C_M_RD, 1, read } }; write[1] = subaddr; if (2 != i2c_transfer(chip->c.adapter,msgs,2)) { printk(KERN_WARNING "%s: I/O error (read2)\n", chip->c.name); return -1; } dprintk("%s: chip_read2: reg%d=0x%x\n", chip->c.name,subaddr,read[0]); return read[0]; } static int chip_cmd(struct CHIPSTATE *chip, char *name, audiocmd *cmd) { int i; if (0 == cmd->count) return 0; /* update our shadow register set; print bytes if (debug > 0) */ dprintk("%s: chip_cmd(%s): reg=%d, data:", chip->c.name,name,cmd->bytes[0]); for (i = 1; i < cmd->count; i++) { dprintk(" 0x%x",cmd->bytes[i]); chip->shadow.bytes[i+cmd->bytes[0]] = cmd->bytes[i]; } dprintk("\n"); /* send data to the chip */ if (cmd->count != i2c_master_send(&chip->c,cmd->bytes,cmd->count)) { printk(KERN_WARNING "%s: I/O error (%s)\n", chip->c.name, name); return -1; } return 0; } /* ---------------------------------------------------------------------- */ /* kernel thread for doing i2c stuff asyncronly * right now it is used only to check the audio mode (mono/stereo/whatever) * some time after switching to another TV channel, then turn on stereo * if available, ... */ static void chip_thread_wake(unsigned long data) { struct CHIPSTATE *chip = (struct CHIPSTATE*)data; wake_up_interruptible(&chip->wq); } static int chip_thread(void *data) { struct CHIPSTATE *chip = data; struct CHIPDESC *desc = chiplist + chip->type; #ifdef CONFIG_SMP lock_kernel(); #endif daemonize(); sigfillset(¤t->blocked); strcpy(current->comm,chip->c.name); chip->thread = current; #ifdef CONFIG_SMP unlock_kernel(); #endif dprintk("%s: thread started\n", chip->c.name); if(chip->notify != NULL) up(chip->notify); for (;;) { interruptible_sleep_on(&chip->wq); dprintk("%s: thread wakeup\n", chip->c.name); if (chip->done || signal_pending(current)) break; if (0 != chip->mode) /* don't do anything if mode != auto */ continue; /* have a look what's going on */ dprintk("%s: thread checkmode\n", chip->c.name); desc->checkmode(chip); /* schedule next check */ mod_timer(&chip->wt, jiffies+2*HZ); } chip->thread = NULL; dprintk("%s: thread exiting\n", chip->c.name); if(chip->notify != NULL) up(chip->notify); return 0; } void generic_checkmode(struct CHIPSTATE *chip) { struct CHIPDESC *desc = chiplist + chip->type; int mode = desc->getmode(chip); if (mode & VIDEO_SOUND_STEREO) desc->setmode(chip,VIDEO_SOUND_STEREO); else if (mode & VIDEO_SOUND_LANG1) desc->setmode(chip,VIDEO_SOUND_LANG1); else desc->setmode(chip,VIDEO_SOUND_MONO); } /* ---------------------------------------------------------------------- */ /* audio chip descriptions - defines+functions for tda9840 */ #define TDA9840_SW 0x00 #define TDA9840_LVADJ 0x02 #define TDA9840_STADJ 0x03 #define TDA9840_TEST 0x04 #define TDA9840_MONO 0x10 #define TDA9840_STEREO 0x2a #define TDA9840_DUALA 0x12 #define TDA9840_DUALB 0x1e #define TDA9840_DUALAB 0x1a #define TDA9840_DUALBA 0x16 #define TDA9840_EXTERNAL 0x7a #define TDA9840_DS_DUAL 0x20 /* Dual sound identified */ #define TDA9840_ST_STEREO 0x40 /* Stereo sound identified */ #define TDA9840_PONRES 0x80 /* Power-on reset detected if = 1 */ int tda9840_getmode(struct CHIPSTATE *chip) { int val, mode; val = chip_read(chip); mode = VIDEO_SOUND_MONO; if (val & TDA9840_DS_DUAL) mode |= VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2; if (val & TDA9840_ST_STEREO) mode |= VIDEO_SOUND_STEREO; dprintk ("tda9840_getmode(): raw chip read: %d, return: %d\n", val, mode); return mode; } void tda9840_setmode(struct CHIPSTATE *chip, int mode) { int update = 1; int t = chip->shadow.bytes[TDA9840_SW + 1] & ~0x7e; switch (mode) { case VIDEO_SOUND_MONO: t |= TDA9840_MONO; break; case VIDEO_SOUND_STEREO: t |= TDA9840_STEREO; break; case VIDEO_SOUND_LANG1: t |= TDA9840_DUALA; break; case VIDEO_SOUND_LANG2: t |= TDA9840_DUALB; break; default: update = 0; } if (update) chip_write(chip, TDA9840_SW, t); } /* ---------------------------------------------------------------------- */ /* audio chip descriptions - defines+functions for tda985x */ /* subaddresses for TDA9855 */ #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 */ /* subaddresses for TDA9850 */ #define TDA9850_C4 0x04 /* Control 1 for TDA9850 */ /* subaddesses for both chips */ #define TDA985x_C5 0x05 /* Control 2 for TDA9850, Control 1 for TDA9855 */ #define TDA985x_C6 0x06 /* Control 3 for TDA9850, Control 2 for TDA9855 */ #define TDA985x_C7 0x07 /* Control 4 for TDA9850, Control 3 for TDA9855 */ #define TDA985x_A1 0x08 /* Alignment 1 for both chips */ #define TDA985x_A2 0x09 /* Alignment 2 for both chips */ #define TDA985x_A3 0x0a /* Alignment 3 for both chips */ /* Masks for bits in TDA9855 subaddresses */ /* 0x00 - VR in TDA9855 */ /* 0x01 - VL in TDA9855 */ /* lower 7 bits control gain from -71dB (0x28) to 16dB (0x7f) * in 1dB steps - mute is 0x27 */ /* 0x02 - BA in TDA9855 */ /* lower 5 bits control bass gain from -12dB (0x06) to 16.5dB (0x19) * in .5dB steps - 0 is 0x0E */ /* 0x03 - TR in TDA9855 */ /* 4 bits << 1 control treble gain from -12dB (0x3) to 12dB (0xb) * in 3dB steps - 0 is 0x7 */ /* Masks for bits in both chips' subaddresses */ /* 0x04 - SW in TDA9855, C4/Control 1 in TDA9850 */ /* Unique to TDA9855: */ /* 4 bits << 2 control subwoofer/surround gain from -14db (0x1) to 14db (0xf) * in 3dB steps - mute is 0x0 */ /* Unique to TDA9850: */ /* lower 4 bits control stereo noise threshold, over which stereo turns off * set to values of 0x00 through 0x0f for Ster1 through Ster16 */ /* 0x05 - C5 - Control 1 in TDA9855 , Control 2 in TDA9850*/ /* Unique to TDA9855: */ #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) */ /* Unique to TDA9850: */ /* lower 4 bits contol SAP noise threshold, over which SAP turns off * set to values of 0x00 through 0x0f for SAP1 through SAP16 */ /* 0x06 - C6 - Control 2 in TDA9855, Control 3 in TDA9850 */ /* Common to TDA9855 and TDA9850: */ #define TDA985x_SAP 3<<6 /* Selects SAP output, mute if not received */ #define TDA985x_STEREO 1<<6 /* Selects Stereo ouput, mono if not received */ #define TDA985x_MONO 0 /* Forces Mono output */ #define TDA985x_LMU 1<<3 /* Mute (LOR/LOL for 9855, OUTL/OUTR for 9850) */ /* Unique to TDA9855: */ #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_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*/ /* 0x07 - C7 - Control 3 in TDA9855, Control 4 in TDA9850 */ /* Common to both TDA9855 and TDA9850: */ /* lower 4 bits control input gain from -3.5dB (0x0) to 4dB (0xF) * in .5dB steps - 0dB is 0x7 */ /* 0x08, 0x09 - A1 and A2 (read/write) */ /* Common to both TDA9855 and TDA9850: */ /* lower 5 bites are wideband and spectral expander alignment * from 0x00 to 0x1f - nominal at 0x0f and 0x10 (read/write) */ #define TDA985x_STP 1<<5 /* Stereo Pilot/detect (read-only) */ #define TDA985x_SAPP 1<<6 /* SAP Pilot/detect (read-only) */ #define TDA985x_STS 1<<7 /* Stereo trigger 1= <35mV 0= <30mV (write-only)*/ /* 0x0a - A3 */ /* Common to both TDA9855 and TDA9850: */ /* lower 3 bits control timing current for alignment: -30% (0x0), -20% (0x1), * -10% (0x2), nominal (0x3), +10% (0x6), +20% (0x5), +30% (0x4) */ #define TDA985x_ADJ 1<<7 /* Stereo adjust on/off (wideband and spectral */ int tda9855_volume(int val) { return val/0x2e8+0x27; } int tda9855_bass(int val) { return val/0xccc+0x06; } int tda9855_treble(int val) { return (val/0x1c71+0x3)<<1; } int tda985x_getmode(struct CHIPSTATE *chip) { int mode; mode = ((TDA985x_STP | TDA985x_SAPP) & chip_read(chip)) >> 4; /* Add mono mode regardless of SAP and stereo */ /* Allows forced mono */ return mode | VIDEO_SOUND_MONO; } void tda985x_setmode(struct CHIPSTATE *chip, int mode) { int update = 1; int c6 = chip->shadow.bytes[TDA985x_C6+1] & 0x3f; switch (mode) { case VIDEO_SOUND_MONO: c6 |= TDA985x_MONO; break; case VIDEO_SOUND_STEREO: c6 |= TDA985x_STEREO; break; case VIDEO_SOUND_LANG1: c6 |= TDA985x_SAP; break; default: update = 0; } if (update) chip_write(chip,TDA985x_C6,c6); } /* ---------------------------------------------------------------------- */ /* audio chip descriptions - defines+functions for tda9873h */ /* Subaddresses for TDA9873H */ #define TDA9873_SW 0x00 /* Switching */ #define TDA9873_AD 0x01 /* Adjust */ #define TDA9873_PT 0x02 /* Port */ /* Subaddress 0x00: Switching Data * B7..B0: * * B1, B0: Input source selection * 0, 0 internal * 1, 0 external stereo * 0, 1 external mono */ #define TDA9873_INTERNAL 0 #define TDA9873_EXT_STEREO 2 #define TDA9873_EXT_MONO 1 /* B3, B2: output signal select * B4 : transmission mode * 0, 0, 1 Mono * 1, 0, 0 Stereo * 1, 1, 1 Stereo (reversed channel) * 0, 0, 0 Dual AB * 0, 0, 1 Dual AA * 0, 1, 0 Dual BB * 0, 1, 1 Dual BA */ #define TDA9873_TR_MONO 4 #define TDA9873_TR_STEREO 1 << 4 #define TDA9873_TR_REVERSE (1 << 3) & (1 << 2) #define TDA9873_TR_DUALA 1 << 2 #define TDA9873_TR_DUALB 1 << 3 /* output level controls * B5: output level switch (0 = reduced gain, 1 = normal gain) * B6: mute (1 = muted) * B7: auto-mute (1 = auto-mute enabled) */ #define TDA9873_GAIN_NORMAL 1 << 5 #define TDA9873_MUTE 1 << 6 #define TDA9873_AUTOMUTE 1 << 7 /* Subaddress 0x01: Adjust/standard */ /* Lower 4 bits (C3..C0) control stereo adjustment on R channel (-0.6 - +0.7 dB) * Recommended value is +0 dB */ #define TDA9873_STEREO_ADJ 0x06 /* 0dB gain */ /* Bits C6..C4 control FM stantard * C6, C5, C4 * 0, 0, 0 B/G (PAL FM) * 0, 0, 1 M * 0, 1, 0 D/K(1) * 0, 1, 1 D/K(2) * 1, 0, 0 D/K(3) * 1, 0, 1 I */ #define TDA9873_BG 0 #define TDA9873_M 1 #define TDA9873_DK1 2 #define TDA9873_DK2 3 #define TDA9873_DK3 4 #define TDA9873_I 5 /* C7 controls identification response time (1=fast/0=normal) */ #define TDA9873_IDR_NORM 0 #define TDA9873_IDR_FAST 1 << 7 /* Subaddress 0x02: Port data */ /* E1, E0 free programmable ports P1/P2 0, 0 both ports low 0, 1 P1 high 1, 0 P2 high 1, 1 both ports high */ #define TDA9873_PORTS 3 /* E2: test port */ #define TDA9873_TST_PORT 1 << 2 /* E5..E3 control mono output channel (together with transmission mode bit B4) * * E5 E4 E3 B4 OUTM * 0 0 0 0 mono * 0 0 1 0 DUAL B * 0 1 0 1 mono (from stereo decoder) */ #define TDA9873_MOUT_MONO 0 #define TDA9873_MOUT_FMONO 0 #define TDA9873_MOUT_DUALA 0 #define TDA9873_MOUT_DUALB 1 << 3 #define TDA9873_MOUT_ST 1 << 4 #define TDA9873_MOUT_EXTM (1 << 4 ) & (1 << 3) #define TDA9873_MOUT_EXTL 1 << 5 #define TDA9873_MOUT_EXTR (1 << 5 ) & (1 << 3) #define TDA9873_MOUT_EXTLR (1 << 5 ) & (1 << 4) #define TDA9873_MOUT_MUTE (1 << 5 ) & (1 << 4) & (1 << 3) /* Status bits: (chip read) */ #define TDA9873_PONR 0 /* Power-on reset detected if = 1 */ #define TDA9873_STEREO 2 /* Stereo sound is identified */ #define TDA9873_DUAL 4 /* Dual sound is identified */ int tda9873_getmode(struct CHIPSTATE *chip) { int val,mode; val = chip_read(chip); mode = VIDEO_SOUND_MONO; if (val & TDA9873_STEREO) mode |= VIDEO_SOUND_STEREO; if (val & TDA9873_DUAL) mode |= VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2; dprintk ("tda9873_getmode(): raw chip read: %d, return: %d\n", val, mode); return mode; } void tda9873_setmode(struct CHIPSTATE *chip, int mode) { int sw_data = chip->shadow.bytes[TDA9873_SW+1] & 0xe3; /* int adj_data = chip->shadow.bytes[TDA9873_AD+1] ; */ if (sw_data & 3) { dprintk("tda9873_setmode(): external input\n"); return; } dprintk("tda9873_setmode(): chip->shadow.bytes[%d] = %d\n", TDA9873_SW+1, chip->shadow.bytes[TDA9873_SW+1]); dprintk("tda9873_setmode(): sw_data = %d\n", sw_data); switch (mode) { case VIDEO_SOUND_MONO: sw_data |= TDA9873_TR_MONO; break; case VIDEO_SOUND_STEREO: sw_data |= TDA9873_TR_STEREO; break; case VIDEO_SOUND_LANG1: sw_data |= TDA9873_TR_DUALA; break; case VIDEO_SOUND_LANG2: sw_data |= TDA9873_TR_DUALB; break; } dprintk("tda9873_setmode(): req. mode %d; chip_write: %d\n", mode, sw_data); chip_write(chip,TDA9873_SW,sw_data); } int tda9873_checkit(struct CHIPSTATE *chip) { int rc; if (-1 == (rc = chip_read2(chip,254))) return 0; return (rc & ~0x1f) == 0x80; } /* ---------------------------------------------------------------------- */ /* audio chip descriptions - defines+functions for tea6420 */ #define TEA6300_VL 0x00 /* volume left */ #define TEA6300_VR 0x01 /* volume right */ #define TEA6300_BA 0x02 /* bass */ #define TEA6300_TR 0x03 /* treble */ #define TEA6300_FA 0x04 /* fader control */ #define TEA6300_S 0x05 /* switch register */ /* values for those registers: */ #define TEA6300_S_SA 0x01 /* stereo A input */ #define TEA6300_S_SB 0x02 /* stereo B */ #define TEA6300_S_SC 0x04 /* stereo C */ #define TEA6300_S_GMU 0x80 /* general mute */ #define TEA6420_S_SA 0x00 /* stereo A input */ #define TEA6420_S_SB 0x01 /* stereo B */ #define TEA6420_S_SC 0x02 /* stereo C */ #define TEA6420_S_SD 0x03 /* stereo D */ #define TEA6420_S_SE 0x04 /* stereo E */ #define TEA6420_S_GMU 0x05 /* general mute */ int tea6300_shift10(int val) { return val >> 10; } int tea6300_shift12(int val) { return val >> 12; } /* ---------------------------------------------------------------------- */ /* audio chip descriptions - defines+functions for tda8425 */ #define TDA8425_VL 0x00 /* volume left */ #define TDA8425_VR 0x01 /* volume right */ #define TDA8425_BA 0x02 /* bass */ #define TDA8425_TR 0x03 /* treble */ #define TDA8425_S1 0x08 /* switch functions */ /* values for those registers: */ #define TDA8425_S1_OFF 0xEE /* audio off (mute on) */ #define TDA8425_S1_ON 0xCE /* audio on (mute off) - "linear stereo" mode */ int tda8425_shift10(int val) { return val >> 10 | 0xc0; } int tda8425_shift12(int val) { return val >> 12 | 0xf0; } /* ---------------------------------------------------------------------- */ /* audio chip descriptions - defines+functions for pic16c54 (PV951) */ /* the registers of 16C54, I2C sub address. */ #define PIC16C54_REG_KEY_CODE 0x01 /* Not use. */ #define PIC16C54_REG_MISC 0x02 /* bit definition of the RESET register, I2C data. */ #define PIC16C54_MISC_RESET_REMOTE_CTL 0x01 /* bit 0, Reset to receive the key */ /* code of remote controller */ #define PIC16C54_MISC_MTS_MAIN 0x02 /* bit 1 */ #define PIC16C54_MISC_MTS_SAP 0x04 /* bit 2 */ #define PIC16C54_MISC_MTS_BOTH 0x08 /* bit 3 */ #define PIC16C54_MISC_SND_MUTE 0x10 /* bit 4, Mute Audio(Line-in and Tuner) */ #define PIC16C54_MISC_SND_NOTMUTE 0x20 /* bit 5 */ #define PIC16C54_MISC_SWITCH_TUNER 0x40 /* bit 6 , Switch to Line-in */ #define PIC16C54_MISC_SWITCH_LINE 0x80 /* bit 7 , Switch to Tuner */ /* ---------------------------------------------------------------------- */ /* audio chip descriptions - struct CHIPDESC */ /* insmod options to enable/disable individual audio chips */ int tda8425 = 1; int tda9840 = 1; int tda9850 = 1; int tda9855 = 1; int tda9873 = 1; int tea6300 = 0; int tea6420 = 1; int pic16c54 = 1; MODULE_PARM(tda8425,"i"); MODULE_PARM(tda9840,"i"); MODULE_PARM(tda9850,"i"); MODULE_PARM(tda9855,"i"); MODULE_PARM(tda9873,"i"); MODULE_PARM(tea6300,"i"); MODULE_PARM(tea6420,"i"); MODULE_PARM(pic16c54,"i"); static struct CHIPDESC chiplist[] = { { name: "tda9840", id: I2C_DRIVERID_TDA9840, insmodopt: &tda9840, addr_lo: I2C_TDA9840 >> 1, addr_hi: I2C_TDA9840 >> 1, registers: 5, getmode: tda9840_getmode, setmode: tda9840_setmode, checkmode: generic_checkmode, init: { 2, { TDA9840_SW, 0x2a } } }, { name: "tda9873h", id: I2C_DRIVERID_TDA9873, checkit: tda9873_checkit, insmodopt: &tda9873, addr_lo: I2C_TDA985x_L >> 1, addr_hi: I2C_TDA985x_H >> 1, registers: 3, flags: CHIP_HAS_INPUTSEL, getmode: tda9873_getmode, setmode: tda9873_setmode, checkmode: generic_checkmode, init: { 4, { TDA9873_SW, 0xa4, 0x06, 0x03 } }, inputreg: TDA9873_SW, inputmute: 0xc0, inputmap: {0xa4, 0xa2, 0xa4, 0xa4, 0xc0} }, { name: "tda9850", id: I2C_DRIVERID_TDA9850, insmodopt: &tda9850, addr_lo: I2C_TDA985x_L >> 1, addr_hi: I2C_TDA985x_H >> 1, registers: 11, getmode: tda985x_getmode, setmode: tda985x_setmode, init: { 8, { TDA9850_C4, 0x08, 0x08, TDA985x_STEREO, 0x07, 0x10, 0x10, 0x03 } } }, { name: "tda9855", id: I2C_DRIVERID_TDA9855, insmodopt: &tda9855, addr_lo: I2C_TDA985x_L >> 1, addr_hi: I2C_TDA985x_H >> 1, registers: 11, flags: CHIP_HAS_VOLUME | CHIP_HAS_BASSTREBLE, leftreg: TDA9855_VR, rightreg: TDA9855_VL, bassreg: TDA9855_BA, treblereg: TDA9855_TR, volfunc: tda9855_volume, bassfunc: tda9855_bass, treblefunc: tda9855_treble, getmode: tda985x_getmode, setmode: tda985x_setmode, init: { 12, { 0, 0x6f, 0x6f, 0x0e, 0x07<<1, 0x8<<2, TDA9855_MUTE | TDA9855_AVL | TDA9855_LOUD | TDA9855_INT, TDA985x_STEREO | TDA9855_LINEAR | TDA9855_TZCM | TDA9855_VZCM, 0x07, 0x10, 0x10, 0x03 }} }, { name: "tea6300", id: I2C_DRIVERID_TEA6300, insmodopt: &tea6300, addr_lo: I2C_TEA6300 >> 1, addr_hi: I2C_TEA6300 >> 1, registers: 6, flags: CHIP_HAS_VOLUME | CHIP_HAS_BASSTREBLE | CHIP_HAS_INPUTSEL, leftreg: TEA6300_VR, rightreg: TEA6300_VL, bassreg: TEA6300_BA, treblereg: TEA6300_TR, volfunc: tea6300_shift10, bassfunc: tea6300_shift12, treblefunc: tea6300_shift12, inputreg: TEA6300_S, inputmap: { TEA6300_S_SA, TEA6300_S_SB, TEA6300_S_SC }, inputmute: TEA6300_S_GMU, }, { name: "tea6420", id: I2C_DRIVERID_TEA6420, insmodopt: &tea6420, addr_lo: I2C_TEA6420 >> 1, addr_hi: I2C_TEA6420 >> 1, registers: 1, flags: CHIP_HAS_INPUTSEL, inputreg: -1, inputmap: { TEA6420_S_SA, TEA6420_S_SB, TEA6420_S_SC }, inputmute: TEA6300_S_GMU, }, { name: "tda8425", id: I2C_DRIVERID_TDA8425, insmodopt: &tda8425, addr_lo: I2C_TDA8425 >> 1, addr_hi: I2C_TDA8425 >> 1, registers: 9, flags: CHIP_HAS_VOLUME | CHIP_HAS_BASSTREBLE | CHIP_HAS_INPUTSEL, leftreg: TDA8425_VR, rightreg: TDA8425_VL, bassreg: TDA8425_BA, treblereg: TDA8425_TR, volfunc: tda8425_shift10, bassfunc: tda8425_shift12, treblefunc: tda8425_shift12, inputreg: TDA8425_S1, inputmap: { TDA8425_S1_ON, TDA8425_S1_ON, TDA8425_S1_ON }, inputmute: TDA8425_S1_OFF, }, { name: "pic16c54 (PV951)", id: I2C_DRIVERID_PIC16C54_PV951, insmodopt: &pic16c54, addr_lo: I2C_PIC16C54 >> 1, addr_hi: I2C_PIC16C54>> 1, registers: 2, flags: CHIP_HAS_INPUTSEL, inputreg: PIC16C54_REG_MISC, inputmap: {PIC16C54_MISC_SND_NOTMUTE|PIC16C54_MISC_SWITCH_TUNER, PIC16C54_MISC_SND_NOTMUTE|PIC16C54_MISC_SWITCH_LINE, PIC16C54_MISC_SND_NOTMUTE|PIC16C54_MISC_SWITCH_LINE, PIC16C54_MISC_SND_MUTE,PIC16C54_MISC_SND_MUTE, PIC16C54_MISC_SND_NOTMUTE}, inputmute: PIC16C54_MISC_SND_MUTE, }, { name: NULL } /* EOF */ }; /* ---------------------------------------------------------------------- */ /* i2c registration */ static int chip_attach(struct i2c_adapter *adap, int addr, unsigned short flags, int kind) { struct CHIPSTATE *chip; struct CHIPDESC *desc; chip = kmalloc(sizeof(*chip),GFP_KERNEL); if (!chip) return -ENOMEM; memset(chip,0,sizeof(*chip)); memcpy(&chip->c,&client_template,sizeof(struct i2c_client)); chip->c.adapter = adap; chip->c.addr = addr; chip->c.data = chip; /* find description for the chip */ dprintk("tvaudio: chip @ addr=0x%x\n",addr<<1); for (desc = chiplist; desc->name != NULL; desc++) { if (0 == *(desc->insmodopt)) continue; if (addr < desc->addr_lo || addr > desc->addr_hi) continue; if (desc->checkit && !desc->checkit(chip)) continue; break; } if (desc->name == NULL) { dprintk("tvaudio: no matching chip description found\n"); return -EIO; } dprintk("tvaudio: %s matches:%s%s%s\n",desc->name, (desc->flags & CHIP_HAS_VOLUME) ? " volume" : "", (desc->flags & CHIP_HAS_BASSTREBLE) ? " bass/treble" : "", (desc->flags & CHIP_HAS_INPUTSEL) ? " audiomux" : ""); /* fill required data structures */ strcpy(chip->c.name,desc->name); chip->type = desc-chiplist; chip->shadow.count = desc->registers+1; /* register */ MOD_INC_USE_COUNT; i2c_attach_client(&chip->c); /* initialization */ chip_cmd(chip,"init",&desc->init); if (desc->flags & CHIP_HAS_VOLUME) { chip->left = desc->leftinit ? desc->leftinit : 65536; chip->right = desc->rightinit ? desc->rightinit : 65536; chip_write(chip,desc->leftreg,desc->volfunc(chip->left)); chip_write(chip,desc->rightreg,desc->volfunc(chip->right)); } if (desc->flags & CHIP_HAS_BASSTREBLE) { chip->treble = desc->trebleinit ? desc->trebleinit : 32768; chip->bass = desc->bassinit ? desc->bassinit : 32768; chip_write(chip,desc->bassreg,desc->bassfunc(chip->bass)); chip_write(chip,desc->treblereg,desc->treblefunc(chip->treble)); } if (desc->checkmode) { /* start async thread */ DECLARE_MUTEX_LOCKED(sem); chip->notify = &sem; chip->wt.function = chip_thread_wake; chip->wt.data = (unsigned long)chip; init_waitqueue_head(&chip->wq); kernel_thread(chip_thread,(void *)chip,0); down(&sem); chip->notify = NULL; wake_up_interruptible(&chip->wq); } return 0; } static int chip_probe(struct i2c_adapter *adap) { if (adap->id == (I2C_ALGO_BIT | I2C_HW_B_BT848)) return i2c_probe(adap, &addr_data, chip_attach); return 0; } static int chip_detach(struct i2c_client *client) { struct CHIPSTATE *chip = client->data; if (NULL != chip->thread) { /* shutdown async thread */ DECLARE_MUTEX_LOCKED(sem); chip->notify = &sem; chip->done = 1; wake_up_interruptible(&chip->wq); down(&sem); chip->notify = NULL; } i2c_detach_client(&chip->c); kfree(chip); MOD_DEC_USE_COUNT; return 0; } /* ---------------------------------------------------------------------- */ /* video4linux interface */ static int chip_command(struct i2c_client *client, unsigned int cmd, void *arg) { __u16 *sarg = arg; struct CHIPSTATE *chip = client->data; struct CHIPDESC *desc = chiplist + chip->type; dprintk("%s: chip_command 0x%x\n",chip->c.name,cmd); switch (cmd) { case AUDC_SET_INPUT: if (desc->flags & CHIP_HAS_INPUTSEL) { if (*sarg & 0x80) chip_write(chip,desc->inputreg,desc->inputmute); else chip_write(chip,desc->inputreg,desc->inputmap[*sarg]); } break; /* --- v4l ioctls --- */ /* take care: bttv does userspace copying, we'll get a kernel pointer here... */ case VIDIOCGAUDIO: { struct video_audio *va = arg; if (desc->flags & CHIP_HAS_VOLUME) { va->flags |= VIDEO_AUDIO_VOLUME; va->volume = MAX(chip->left,chip->right); va->balance = (32768*MIN(chip->left,chip->right))/ (va->volume ? va->volume : 1); } if (desc->flags & CHIP_HAS_BASSTREBLE) { va->flags |= VIDEO_AUDIO_BASS | VIDEO_AUDIO_TREBLE; va->bass = chip->bass; va->treble = chip->treble; } if (desc->getmode) va->mode = desc->getmode(chip); else va->mode = VIDEO_SOUND_MONO; break; } case VIDIOCSAUDIO: { struct video_audio *va = arg; if (desc->flags & CHIP_HAS_VOLUME) { chip->left = (MIN(65536 - va->balance,32768) * va->volume) / 32768; chip->right = (MIN(va->balance,32768) * va->volume) / 32768; chip_write(chip,desc->leftreg,desc->volfunc(chip->left)); chip_write(chip,desc->rightreg,desc->volfunc(chip->right)); } if (desc->flags & CHIP_HAS_BASSTREBLE) { chip->bass = va->bass; chip->treble = va->treble; chip_write(chip,desc->bassreg,desc->bassfunc(chip->bass)); chip_write(chip,desc->treblereg,desc->treblefunc(chip->treble)); } if (desc->setmode && va->mode) { chip->mode = va->mode; desc->setmode(chip,va->mode); } break; } case VIDIOCSFREQ: { chip->mode = 0; /* automatic */ if (desc->checkmode) { desc->setmode(chip,VIDEO_SOUND_MONO); mod_timer(&chip->wt, jiffies+2*HZ); /* the thread will call checkmode() later */ } } } return 0; } static struct i2c_driver driver = { name: "generic i2c audio driver", id: I2C_DRIVERID_TVAUDIO, /* FIXME */ flags: I2C_DF_NOTIFY, attach_adapter: chip_probe, detach_client: chip_detach, command: chip_command, }; static struct i2c_client client_template = { name: "(unset)", driver: &driver, }; int audiochip_init_module(void) { struct CHIPDESC *desc; printk(KERN_INFO "tvaudio: TV audio decoder + audio/video mux driver\n"); printk(KERN_INFO "tvaudio: known chips: "); for (desc = chiplist; desc->name != NULL; desc++) printk("%s%s", (desc == chiplist) ? "" : ",",desc->name); printk("\n"); i2c_add_driver(&driver); return 0; } void audiochip_cleanup_module(void) { i2c_del_driver(&driver); } module_init(audiochip_init_module); module_exit(audiochip_cleanup_module); /* * Local variables: * c-basic-offset: 8 * End: */