diff options
Diffstat (limited to 'drivers/media/video/tvaudio.c')
| -rw-r--r-- | drivers/media/video/tvaudio.c | 1107 |
1 files changed, 1107 insertions, 0 deletions
diff --git a/drivers/media/video/tvaudio.c b/drivers/media/video/tvaudio.c new file mode 100644 index 000000000..5ed1a1097 --- /dev/null +++ b/drivers/media/video/tvaudio.c @@ -0,0 +1,1107 @@ +/* + * 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 <linux/module.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <linux/malloc.h> +#include <linux/videodev.h> +#include <linux/i2c.h> +#include <linux/i2c-algo-bit.h> +#include <linux/init.h> +#include <linux/smp_lock.h> + +#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; + + /* thread */ + struct task_struct *thread; + struct semaphore *notify; + wait_queue_head_t wq; + int wake,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 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 (;;) { + if (chip->done) + break; + if (!chip->wake) { + interruptible_sleep_on(&chip->wq); + dprintk("%s: thread wakeup\n", chip->c.name); + if (chip->done || signal_pending(current)) + break; + } + chip->wake = 0; + + /* wait some time -- let the audio hardware + figure the current mode */ + current->state = TASK_INTERRUPTIBLE; + schedule_timeout(HZ); + if (signal_pending(current)) + break; + if (chip->wake) + continue; + + dprintk("%s: thread checkmode\n", chip->c.name); + desc->checkmode(chip); + } + + chip->thread = NULL; + dprintk("%s: thread exiting\n", chip->c.name); + if(chip->notify != NULL) + up(chip->notify); + + return 0; +} + +/* ---------------------------------------------------------------------- */ +/* 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 + +int tda9840_getmode(struct CHIPSTATE *chip) +{ + return VIDEO_SOUND_MONO | VIDEO_SOUND_STEREO | + VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2; +} + +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] ; */ + 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); +} + +void tda9873_checkmode(struct CHIPSTATE *chip) +{ + int mode = tda9873_getmode(chip); + + if (mode & VIDEO_SOUND_STEREO) + tda9873_setmode(chip,VIDEO_SOUND_STEREO); + if (mode & VIDEO_SOUND_LANG1) + tda9873_setmode(chip,VIDEO_SOUND_LANG1); +} + +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, + + 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, + + getmode: tda9873_getmode, + setmode: tda9873_setmode, + checkmode: tda9873_checkmode, + + init: { 4, { TDA9873_SW, 0xa0, 0x06, 0x03 } } + }, + { + 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}, + 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; + init_waitqueue_head(&chip->wq); + kernel_thread(chip_thread,(void *)chip,0); + down(&sem); + chip->notify = NULL; + chip->wake++; + 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) + desc->setmode(chip,va->mode); + break; + } + case VIDIOCSFREQ: + { + if (desc->checkmode) { + desc->setmode(chip,VIDEO_SOUND_MONO); + chip->wake++; + wake_up_interruptible(&chip->wq); + /* the thread will call checkmode() a second 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: + */ |