URL https://opencores.org/ocsvn/or1k/or1k/trunk
Subversion Repositories or1k

[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [media/] [video/] [tvaudio.c] - Blame information for rev 1774

Go to most recent revision | Details | Compare with Previous | View Log

/*
 * 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/config.h>
#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/slab.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 "id.h"
#include "i2c-compat.h"
 
#include "tvaudio.h"
 
/* ---------------------------------------------------------------------- */
/* insmod args                                                            */
 
MODULE_PARM(debug,"i");
static int debug = 0;    /* insmod parameter */
 
MODULE_DESCRIPTION("device driver for various i2c TV sound decoder / audiomux chips");
MODULE_AUTHOR("Eric Sandeen, Steve VanDeBogart, Greg Alexander, Gerd Knorr");
MODULE_LICENSE("GPL");
 
#define UNSET    (-1U)
#define dprintk  if (debug) printk
 
/* ---------------------------------------------------------------------- */
/* our structs                                                            */
 
#define MAXREGS 64
 
struct CHIPSTATE;
typedef int  (*getvalue)(int);
typedef int  (*checkit)(struct CHIPSTATE*);
typedef int  (*initialize)(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;
        initialize initialize;
        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;
        int  inputmask;
};
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;
        int prevmode;
        int norm;
        /* thread */
        struct task_struct  *thread;
        struct semaphore    *notify;
        wait_queue_head_t    wq;
        struct timer_list    wt;
        int                  done;
        int                  watch_stereo;
};
 
#define VIDEO_MODE_RADIO 16      /* norm magic for radio mode */
 
/* ---------------------------------------------------------------------- */
/* i2c addresses                                                          */
 
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_TDA9874   >> 1,
        I2C_PIC16C54  >> 1,
        I2C_CLIENT_END };
static unsigned short normal_i2c_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
I2C_CLIENT_INSMOD;
 
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",
                        i2c_clientname(&chip->c), 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",
                               i2c_clientname(&chip->c), val);
                        return -1;
                }
        } else {
                dprintk("%s: chip_write: reg%d=0x%x\n",
                        i2c_clientname(&chip->c), 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",
                               i2c_clientname(&chip->c), subaddr, val);
                        return -1;
                }
        }
        return 0;
}
 
static int chip_write_masked(struct CHIPSTATE *chip, int subaddr, int val, int mask)
{
        if (mask != 0) {
                if (-1 == subaddr) {
                        val = (chip->shadow.bytes[1] & ~mask) | (val & mask);
                } else {
                        val = (chip->shadow.bytes[subaddr+1] & ~mask) | (val & mask);
                }
        }
        return chip_write(chip, subaddr, val);
}
 
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",
                       i2c_clientname(&chip->c));
                return -1;
        }
        dprintk("%s: chip_read: 0x%x\n",i2c_clientname(&chip->c),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[0] = subaddr;
 
        if (2 != i2c_transfer(chip->c.adapter,msgs,2)) {
                printk(KERN_WARNING "%s: I/O error (read2)\n",
                       i2c_clientname(&chip->c));
                return -1;
        }
        dprintk("%s: chip_read2: reg%d=0x%x\n",
                i2c_clientname(&chip->c),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:",
                i2c_clientname(&chip->c),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", i2c_clientname(&chip->c), 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;
 
        lock_kernel();
        daemonize();
        sigfillset(&current->blocked);
        strcpy(current->comm,i2c_clientname(&chip->c));
        chip->thread = current;
        unlock_kernel();
 
        dprintk("%s: thread started\n", i2c_clientname(&chip->c));
        if(chip->notify != NULL)
                up(chip->notify);
 
        for (;;) {
                interruptible_sleep_on(&chip->wq);
                dprintk("%s: thread wakeup\n", i2c_clientname(&chip->c));
                if (chip->done || signal_pending(current))
                        break;
 
                /* don't do anything for radio or if mode != auto */
                if (chip->norm == VIDEO_MODE_RADIO || chip->mode != 0)
                        continue;
 
                /* have a look what's going on */
                desc->checkmode(chip);
 
                /* schedule next check */
                mod_timer(&chip->wt, jiffies+2*HZ);
        }
 
        chip->thread = NULL;
        dprintk("%s: thread exiting\n", i2c_clientname(&chip->c));
        if(chip->notify != NULL)
                up(chip->notify);
 
        return 0;
}
 
static void generic_checkmode(struct CHIPSTATE *chip)
{
        struct CHIPDESC  *desc = chiplist + chip->type;
        int mode = desc->getmode(chip);
 
        if (mode == chip->prevmode)
            return;
 
        dprintk("%s: thread checkmode\n", i2c_clientname(&chip->c));
        chip->prevmode = mode;
 
        if (mode & VIDEO_SOUND_STEREO)
                desc->setmode(chip,VIDEO_SOUND_STEREO);
        else if (mode & VIDEO_SOUND_LANG1)
                desc->setmode(chip,VIDEO_SOUND_LANG1);
        else if (mode & VIDEO_SOUND_LANG2)
                desc->setmode(chip,VIDEO_SOUND_LANG2);
        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 */
 
#define TDA9840_TEST_INT1SN 0x1 /* Integration time 0.5s when set */
#define TDA9840_TEST_INTFU 0x02 /* Disables integrator function */
 
static 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;
}
 
static 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 */
 
static int tda9855_volume(int val) { return val/0x2e8+0x27; }
static int tda9855_bass(int val)   { return val/0xccc+0x06; }
static int tda9855_treble(int val) { return (val/0x1c71+0x3)<<1; }
 
static 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;
}
 
static 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_INP_MASK    3
#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_MASK     (7 << 2)
#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       */
 
static 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;
}
 
static void tda9873_setmode(struct CHIPSTATE *chip, int mode)
{
        int sw_data  = chip->shadow.bytes[TDA9873_SW+1] & ~ TDA9873_TR_MASK;
        /*      int adj_data = chip->shadow.bytes[TDA9873_AD+1] ; */
 
        if ((sw_data & TDA9873_INP_MASK) != TDA9873_INTERNAL) {
                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;
        default:
                chip->mode = 0;
                return;
        }
 
        chip_write(chip, TDA9873_SW, sw_data);
        dprintk("tda9873_setmode(): req. mode %d; chip_write: %d\n",
                mode, sw_data);
}
 
static int tda9873_checkit(struct CHIPSTATE *chip)
{
        int rc;
 
        if (-1 == (rc = chip_read2(chip,254)))
                return 0;
        return (rc & ~0x1f) == 0x80;
}
 
 
/* ---------------------------------------------------------------------- */
/* audio chip description - defines+functions for tda9874h and tda9874a   */
/* Dariusz Kowalewski <darekk@automex.pl>                                 */
 
/* Subaddresses for TDA9874H and TDA9874A (slave rx) */
#define TDA9874A_AGCGR          0x00    /* AGC gain */
#define TDA9874A_GCONR          0x01    /* general config */
#define TDA9874A_MSR            0x02    /* monitor select */
#define TDA9874A_C1FRA          0x03    /* carrier 1 freq. */
#define TDA9874A_C1FRB          0x04    /* carrier 1 freq. */
#define TDA9874A_C1FRC          0x05    /* carrier 1 freq. */
#define TDA9874A_C2FRA          0x06    /* carrier 2 freq. */
#define TDA9874A_C2FRB          0x07    /* carrier 2 freq. */
#define TDA9874A_C2FRC          0x08    /* carrier 2 freq. */
#define TDA9874A_DCR            0x09    /* demodulator config */
#define TDA9874A_FMER           0x0a    /* FM de-emphasis */
#define TDA9874A_FMMR           0x0b    /* FM dematrix */
#define TDA9874A_C1OLAR         0x0c    /* ch.1 output level adj. */
#define TDA9874A_C2OLAR         0x0d    /* ch.2 output level adj. */
#define TDA9874A_NCONR          0x0e    /* NICAM config */
#define TDA9874A_NOLAR          0x0f    /* NICAM output level adj. */
#define TDA9874A_NLELR          0x10    /* NICAM lower error limit */
#define TDA9874A_NUELR          0x11    /* NICAM upper error limit */
#define TDA9874A_AMCONR         0x12    /* audio mute control */
#define TDA9874A_SDACOSR        0x13    /* stereo DAC output select */
#define TDA9874A_AOSR           0x14    /* analog output select */
#define TDA9874A_DAICONR        0x15    /* digital audio interface config */
#define TDA9874A_I2SOSR         0x16    /* I2S-bus output select */
#define TDA9874A_I2SOLAR        0x17    /* I2S-bus output level adj. */
#define TDA9874A_MDACOSR        0x18    /* mono DAC output select (tda9874a) */
#define TDA9874A_ESP            0xFF    /* easy standard progr. (tda9874a) */
 
/* Subaddresses for TDA9874H and TDA9874A (slave tx) */
#define TDA9874A_DSR            0x00    /* device status */
#define TDA9874A_NSR            0x01    /* NICAM status */
#define TDA9874A_NECR           0x02    /* NICAM error count */
#define TDA9874A_DR1            0x03    /* add. data LSB */
#define TDA9874A_DR2            0x04    /* add. data MSB */
#define TDA9874A_LLRA           0x05    /* monitor level read-out LSB */
#define TDA9874A_LLRB           0x06    /* monitor level read-out MSB */
#define TDA9874A_SIFLR          0x07    /* SIF level */
#define TDA9874A_TR2            252     /* test reg. 2 */
#define TDA9874A_TR1            253     /* test reg. 1 */
#define TDA9874A_DIC            254     /* device id. code */
#define TDA9874A_SIC            255     /* software id. code */
 
 
static int tda9874a_mode = 1;           /* 0: A2, 1: NICAM */
static int tda9874a_GCONR = 0xc0;       /* default config. input pin: SIFSEL=0 */
static int tda9874a_NCONR = 0x01;       /* default NICAM config.: AMSEL=0,AMUTE=1 */
static int tda9874a_ESP = 0x07;         /* default standard: NICAM D/K */
static int tda9874a_dic = -1;           /* device id. code */
 
/* insmod options for tda9874a */
static unsigned int tda9874a_SIF   = UNSET;
static unsigned int tda9874a_AMSEL = UNSET;
static unsigned int tda9874a_STD   = UNSET;
MODULE_PARM(tda9874a_SIF,"i");
MODULE_PARM(tda9874a_AMSEL,"i");
MODULE_PARM(tda9874a_STD,"i");
 
/*
 * initialization table for tda9874 decoder:
 *  - carrier 1 freq. registers (3 bytes)
 *  - carrier 2 freq. registers (3 bytes)
 *  - demudulator config register
 *  - FM de-emphasis register (slow identification mode)
 * Note: frequency registers must be written in single i2c transfer.
 */
static struct tda9874a_MODES {
        char *name;
        audiocmd cmd;
} tda9874a_modelist[9] = {
  {     "A2, B/G",
        { 9, { TDA9874A_C1FRA, 0x72,0x95,0x55, 0x77,0xA0,0x00, 0x00,0x00 }} },
  {     "A2, M (Korea)",
        { 9, { TDA9874A_C1FRA, 0x5D,0xC0,0x00, 0x62,0x6A,0xAA, 0x20,0x22 }} },
  {     "A2, D/K (1)",
        { 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x82,0x60,0x00, 0x00,0x00 }} },
  {     "A2, D/K (2)",
        { 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x8C,0x75,0x55, 0x00,0x00 }} },
  {     "A2, D/K (3)",
        { 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x77,0xA0,0x00, 0x00,0x00 }} },
  {     "NICAM, I",
        { 9, { TDA9874A_C1FRA, 0x7D,0x00,0x00, 0x88,0x8A,0xAA, 0x08,0x33 }} },
  {     "NICAM, B/G",
        { 9, { TDA9874A_C1FRA, 0x72,0x95,0x55, 0x79,0xEA,0xAA, 0x08,0x33 }} },
  {     "NICAM, D/K", /* default */
        { 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x79,0xEA,0xAA, 0x08,0x33 }} },
  {     "NICAM, L",
        { 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x79,0xEA,0xAA, 0x09,0x33 }} }
};
 
static int tda9874a_setup(struct CHIPSTATE *chip)
{
        chip_write(chip, TDA9874A_AGCGR, 0x00); /* 0 dB */
        chip_write(chip, TDA9874A_GCONR, tda9874a_GCONR);
        chip_write(chip, TDA9874A_MSR, (tda9874a_mode) ? 0x03:0x02);
        if(tda9874a_dic == 0x11) {
                chip_write(chip, TDA9874A_FMMR, 0x80);
        } else { /* dic == 0x07 */
                chip_cmd(chip,"tda9874_modelist",&tda9874a_modelist[tda9874a_STD].cmd);
                chip_write(chip, TDA9874A_FMMR, 0x00);
        }
        chip_write(chip, TDA9874A_C1OLAR, 0x00); /* 0 dB */
        chip_write(chip, TDA9874A_C2OLAR, 0x00); /* 0 dB */
        chip_write(chip, TDA9874A_NCONR, tda9874a_NCONR);
        chip_write(chip, TDA9874A_NOLAR, 0x00); /* 0 dB */
        /* Note: If signal quality is poor you may want to change NICAM */
        /* error limit registers (NLELR and NUELR) to some greater values. */
        /* Then the sound would remain stereo, but won't be so clear. */
        chip_write(chip, TDA9874A_NLELR, 0x14); /* default */
        chip_write(chip, TDA9874A_NUELR, 0x50); /* default */
 
        if(tda9874a_dic == 0x11) {
                chip_write(chip, TDA9874A_AMCONR, 0xf9);
                chip_write(chip, TDA9874A_SDACOSR, (tda9874a_mode) ? 0x81:0x80);
                chip_write(chip, TDA9874A_AOSR, 0x80);
                chip_write(chip, TDA9874A_MDACOSR, (tda9874a_mode) ? 0x82:0x80);
                chip_write(chip, TDA9874A_ESP, tda9874a_ESP);
        } else { /* dic == 0x07 */
                chip_write(chip, TDA9874A_AMCONR, 0xfb);
                chip_write(chip, TDA9874A_SDACOSR, (tda9874a_mode) ? 0x81:0x80);
                chip_write(chip, TDA9874A_AOSR, 0x00); // or 0x10
        }
        dprintk("tda9874a_setup(): %s [0x%02X].\n",
                tda9874a_modelist[tda9874a_STD].name,tda9874a_STD);
        return 1;
}
 
static int tda9874a_getmode(struct CHIPSTATE *chip)
{
        int dsr,nsr,mode;
        int necr; /* just for debugging */
 
        mode = VIDEO_SOUND_MONO;
 
        if(-1 == (dsr = chip_read2(chip,TDA9874A_DSR)))
                return mode;
        if(-1 == (nsr = chip_read2(chip,TDA9874A_NSR)))
                return mode;
        if(-1 == (necr = chip_read2(chip,TDA9874A_NECR)))
                return mode;
 
        /* need to store dsr/nsr somewhere */
        chip->shadow.bytes[MAXREGS-2] = dsr;
        chip->shadow.bytes[MAXREGS-1] = nsr;
 
        if(tda9874a_mode) {
                /* Note: DSR.RSSF and DSR.AMSTAT bits are also checked.
                 * If NICAM auto-muting is enabled, DSR.AMSTAT=1 indicates
                 * that sound has (temporarily) switched from NICAM to
                 * mono FM (or AM) on 1st sound carrier due to high NICAM bit
                 * error count. So in fact there is no stereo in this case :-(
                 * But changing the mode to VIDEO_SOUND_MONO would switch
                 * external 4052 multiplexer in audio_hook().
                 */
#if 0
                if((nsr & 0x02) && !(dsr & 0x10)) /* NSR.S/MB=1 and DSR.AMSTAT=0 */
                        mode |= VIDEO_SOUND_STEREO;
#else
                if(nsr & 0x02) /* NSR.S/MB=1 */
                        mode |= VIDEO_SOUND_STEREO;
#endif
                if(nsr & 0x01) /* NSR.D/SB=1 */
                        mode |= VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
        } else {
                if(dsr & 0x02) /* DSR.IDSTE=1 */
                        mode |= VIDEO_SOUND_STEREO;
                if(dsr & 0x04) /* DSR.IDDUA=1 */
                        mode |= VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
        }
 
        dprintk("tda9874a_getmode(): DSR=0x%X, NSR=0x%X, NECR=0x%X, return: %d.\n",
                 dsr, nsr, necr, mode);
        return mode;
}
 
static void tda9874a_setmode(struct CHIPSTATE *chip, int mode)
{
        /* Disable/enable NICAM auto-muting (based on DSR.RSSF status bit). */
        /* If auto-muting is disabled, we can hear a signal of degrading quality. */
        if(tda9874a_mode) {
                if(chip->shadow.bytes[MAXREGS-2] & 0x20) /* DSR.RSSF=1 */
                        tda9874a_NCONR &= 0xfe; /* enable */
                else
                        tda9874a_NCONR |= 0x01; /* disable */
                chip_write(chip, TDA9874A_NCONR, tda9874a_NCONR);
        }
 
        /* Note: TDA9874A supports automatic FM dematrixing (FMMR register)
         * and has auto-select function for audio output (AOSR register).
         * Old TDA9874H doesn't support these features.
         * TDA9874A also has additional mono output pin (OUTM), which
         * on same (all?) tv-cards is not used, anyway (as well as MONOIN).
         */
        if(tda9874a_dic == 0x11) {
                int aosr = 0x80;
                int mdacosr = (tda9874a_mode) ? 0x82:0x80;
 
                switch(mode) {
                case VIDEO_SOUND_MONO:
                case VIDEO_SOUND_STEREO:
                        break;
                case VIDEO_SOUND_LANG1:
                        aosr = 0x80; /* auto-select, dual A/A */
                        mdacosr = (tda9874a_mode) ? 0x82:0x80;
                        break;
                case VIDEO_SOUND_LANG2:
                        aosr = 0xa0; /* auto-select, dual B/B */
                        mdacosr = (tda9874a_mode) ? 0x83:0x81;
                        break;
                default:
                        chip->mode = 0;
                        return;
                }
                chip_write(chip, TDA9874A_AOSR, aosr);
                chip_write(chip, TDA9874A_MDACOSR, mdacosr);
 
                dprintk("tda9874a_setmode(): req. mode %d; AOSR=0x%X, MDACOSR=0x%X.\n",
                        mode, aosr, mdacosr);
 
        } else { /* dic == 0x07 */
                int fmmr,aosr;
 
                switch(mode) {
                case VIDEO_SOUND_MONO:
                        fmmr = 0x00; /* mono */
                        aosr = 0x10; /* A/A */
                        break;
                case VIDEO_SOUND_STEREO:
                        if(tda9874a_mode) {
                                fmmr = 0x00;
                                aosr = 0x00; /* handled by NICAM auto-mute */
                        } else {
                                fmmr = (tda9874a_ESP == 1) ? 0x05 : 0x04; /* stereo */
                                aosr = 0x00;
                        }
                        break;
                case VIDEO_SOUND_LANG1:
                        fmmr = 0x02; /* dual */
                        aosr = 0x10; /* dual A/A */
                        break;
                case VIDEO_SOUND_LANG2:
                        fmmr = 0x02; /* dual */
                        aosr = 0x20; /* dual B/B */
                        break;
                default:
                        chip->mode = 0;
                        return;
                }
                chip_write(chip, TDA9874A_FMMR, fmmr);
                chip_write(chip, TDA9874A_AOSR, aosr);
 
                dprintk("tda9874a_setmode(): req. mode %d; FMMR=0x%X, AOSR=0x%X.\n",
                        mode, fmmr, aosr);
        }
}
 
static int tda9874a_checkit(struct CHIPSTATE *chip)
{
        int dic,sic;    /* device id. and software id. codes */
 
        if(-1 == (dic = chip_read2(chip,TDA9874A_DIC)))
                return 0;
        if(-1 == (sic = chip_read2(chip,TDA9874A_SIC)))
                return 0;
 
        dprintk("tda9874a_checkit(): DIC=0x%X, SIC=0x%X.\n", dic, sic);
 
        if((dic == 0x11)||(dic == 0x07)) {
                printk("tvaudio: found tda9874%s.\n", (dic == 0x11) ? "a":"h");
                tda9874a_dic = dic;     /* remember device id. */
                return 1;
        }
        return 0;        /* not found */
}
 
static int tda9874a_initialize(struct CHIPSTATE *chip)
{
        if (tda9874a_SIF > 2)
                tda9874a_SIF = 1;
        if (tda9874a_STD >= 8)
                tda9874a_STD = 0;
        if(tda9874a_AMSEL > 1)
                tda9874a_AMSEL = 0;
 
        if(tda9874a_SIF == 1)
                tda9874a_GCONR = 0xc0;  /* sound IF input 1 */
        else
                tda9874a_GCONR = 0xc1;  /* sound IF input 2 */
 
        tda9874a_ESP = tda9874a_STD;
        tda9874a_mode = (tda9874a_STD < 5) ? 0 : 1;
 
        if(tda9874a_AMSEL == 0)
                tda9874a_NCONR = 0x01; /* auto-mute: analog mono input */
        else
                tda9874a_NCONR = 0x05; /* auto-mute: 1st carrier FM or AM */
 
        tda9874a_setup(chip);
        return 0;
}
 
 
/* ---------------------------------------------------------------------- */
/* 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 */
 
static int tea6300_shift10(int val) { return val >> 10; }
static 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_CH1     0xCE  /* audio channel 1 (mute off) - "linear stereo" mode */
#define TDA8425_S1_CH2     0xCF  /* audio channel 2 (mute off) - "linear stereo" mode */
#define TDA8425_S1_MU      0x20  /* mute bit */
#define TDA8425_S1_STEREO  0x18  /* stereo bits */
#define TDA8425_S1_STEREO_SPATIAL 0x18 /* spatial stereo */
#define TDA8425_S1_STEREO_LINEAR  0x08 /* linear stereo */
#define TDA8425_S1_STEREO_PSEUDO  0x10 /* pseudo stereo */
#define TDA8425_S1_STEREO_MONO    0x00 /* forced mono */
#define TDA8425_S1_ML      0x06        /* language selector */
#define TDA8425_S1_ML_SOUND_A 0x02     /* sound a */
#define TDA8425_S1_ML_SOUND_B 0x04     /* sound b */
#define TDA8425_S1_ML_STEREO  0x06     /* stereo */
#define TDA8425_S1_IS      0x01        /* channel selector */
 
 
static int tda8425_shift10(int val) { return (val >> 10) | 0xc0; }
static int tda8425_shift12(int val) { return (val >> 12) | 0xf0; }
 
static int tda8425_initialize(struct CHIPSTATE *chip)
{
        struct CHIPDESC *desc = chiplist + chip->type;
        int inputmap[8] = { /* tuner    */ TDA8425_S1_CH2, /* radio  */ TDA8425_S1_CH1,
                            /* extern   */ TDA8425_S1_CH1, /* intern */ TDA8425_S1_OFF,
                            /* off      */ TDA8425_S1_OFF, /* on     */ TDA8425_S1_CH2};
 
        if (chip->c.adapter->id == (I2C_ALGO_BIT | I2C_HW_B_RIVA)) {
                memcpy (desc->inputmap, inputmap, sizeof (inputmap));
        }
        return 0;
}
 
static void tda8425_setmode(struct CHIPSTATE *chip, int mode)
{
        int s1 = chip->shadow.bytes[TDA8425_S1+1] & 0xe1;
 
        if (mode & VIDEO_SOUND_LANG1) {
                s1 |= TDA8425_S1_ML_SOUND_A;
                s1 |= TDA8425_S1_STEREO_PSEUDO;
 
        } else if (mode & VIDEO_SOUND_LANG2) {
                s1 |= TDA8425_S1_ML_SOUND_B;
                s1 |= TDA8425_S1_STEREO_PSEUDO;
 
        } else {
                s1 |= TDA8425_S1_ML_STEREO;
 
                if (mode & VIDEO_SOUND_MONO)
                        s1 |= TDA8425_S1_STEREO_MONO;
                if (mode & VIDEO_SOUND_STEREO)
                        s1 |= TDA8425_S1_STEREO_SPATIAL;
        }
        chip_write(chip,TDA8425_S1,s1);
}
 
 
/* ---------------------------------------------------------------------- */
/* 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 - defines+functions for TA8874Z                */
 
// write 1st byte
#define TA8874Z_LED_STE 0x80
#define TA8874Z_LED_BIL 0x40
#define TA8874Z_LED_EXT 0x20
#define TA8874Z_MONO_SET        0x10
#define TA8874Z_MUTE    0x08
#define TA8874Z_F_MONO  0x04
#define TA8874Z_MODE_SUB        0x02
#define TA8874Z_MODE_MAIN       0x01
 
// write 2nd byte
//#define TA8874Z_TI    0x80  // test mode
#define TA8874Z_SEPARATION      0x3f
#define TA8874Z_SEPARATION_DEFAULT      0x10
 
// read
#define TA8874Z_B1      0x80
#define TA8874Z_B0      0x40
#define TA8874Z_CHAG_FLAG       0x20
 
//        B1 B0
// mono    L  H
// stereo  L  L
// BIL     H  L
 
static int ta8874z_getmode(struct CHIPSTATE *chip)
{
        int val, mode;
 
        val = chip_read(chip);
        mode = VIDEO_SOUND_MONO;
        if (val & TA8874Z_B1){
                mode |= VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
        }else if (!(val & TA8874Z_B0)){
                mode |= VIDEO_SOUND_STEREO;
        }
        //dprintk ("ta8874z_getmode(): raw chip read: 0x%02x, return: 0x%02x\n", val, mode);
        return mode;
}
 
static audiocmd ta8874z_stereo = { 2, {0, TA8874Z_SEPARATION_DEFAULT}};
static audiocmd ta8874z_mono = {2, { TA8874Z_MONO_SET, TA8874Z_SEPARATION_DEFAULT}};
static audiocmd ta8874z_main = {2, { 0, TA8874Z_SEPARATION_DEFAULT}};
static audiocmd ta8874z_sub = {2, { TA8874Z_MODE_SUB, TA8874Z_SEPARATION_DEFAULT}};
 
static void ta8874z_setmode(struct CHIPSTATE *chip, int mode)
{
        int update = 1;
        audiocmd *t = NULL;
        dprintk("ta8874z_setmode(): mode: 0x%02x\n", mode);
 
        switch(mode){
        case VIDEO_SOUND_MONO:
                t = &ta8874z_mono;
                break;
        case VIDEO_SOUND_STEREO:
                t = &ta8874z_stereo;
                break;
        case VIDEO_SOUND_LANG1:
                t = &ta8874z_main;
                break;
        case VIDEO_SOUND_LANG2:
                t = &ta8874z_sub;
                break;
        default:
                update = 0;
        }
 
        if(update)
                chip_cmd(chip, "TA8874Z", t);
}
 
static int ta8874z_checkit(struct CHIPSTATE *chip)
{
        int rc;
        rc = chip_read(chip);
        return ((rc & 0x1f) == 0x1f) ? 1 : 0;
}
 
/* ---------------------------------------------------------------------- */
/* 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 tda9874a = 1;
int tea6300  = 0;  // address clash with msp34xx
int tea6420  = 1;
int pic16c54 = 1;
int ta8874z  = 0;  // address clash with tda9840
 
MODULE_PARM(tda8425,"i");
MODULE_PARM(tda9840,"i");
MODULE_PARM(tda9850,"i");
MODULE_PARM(tda9855,"i");
MODULE_PARM(tda9873,"i");
MODULE_PARM(tda9874a,"i");
MODULE_PARM(tea6300,"i");
MODULE_PARM(tea6420,"i");
MODULE_PARM(pic16c54,"i");
MODULE_PARM(ta8874z,"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_TEST, TDA9840_TEST_INT1SN
                                /* ,TDA9840_SW, TDA9840_MONO */} }
        },
        {
                .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  = TDA9873_MUTE | TDA9873_AUTOMUTE,
                .inputmap   = {0xa0, 0xa2, 0xa0, 0xa0, 0xc0},
                .inputmask  = TDA9873_INP_MASK|TDA9873_MUTE|TDA9873_AUTOMUTE,
 
        },
        {
                .name       = "tda9874h/a",
                .id         = I2C_DRIVERID_TDA9874,
                .checkit    = tda9874a_checkit,
                .initialize = tda9874a_initialize,
                .insmodopt  = &tda9874a,
                .addr_lo    = I2C_TDA9874 >> 1,
                .addr_hi    = I2C_TDA9874 >> 1,
 
                .getmode    = tda9874a_getmode,
                .setmode    = tda9874a_setmode,
                .checkmode  = generic_checkmode,
        },
        {
                .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_VL,
                .rightreg   = TDA9855_VR,
                .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_VL,
                .rightreg   = TDA8425_VR,
                .bassreg    = TDA8425_BA,
                .treblereg  = TDA8425_TR,
                .volfunc    = tda8425_shift10,
                .bassfunc   = tda8425_shift12,
                .treblefunc = tda8425_shift12,
 
                .inputreg   = TDA8425_S1,
                .inputmap   = { TDA8425_S1_CH1, TDA8425_S1_CH1, TDA8425_S1_CH1 },
                .inputmute  = TDA8425_S1_OFF,
 
                .setmode    = tda8425_setmode,
                .initialize = tda8425_initialize,
        },
        {
                .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       = "ta8874z",
                .id         = -1,
                //.id         = I2C_DRIVERID_TA8874Z,
                .checkit    = ta8874z_checkit,
                .insmodopt  = &ta8874z,
                .addr_lo    = I2C_TDA9840 >> 1,
                .addr_hi    = I2C_TDA9840 >> 1,
                .registers  = 2,
 
                .getmode    = ta8874z_getmode,
                .setmode    = ta8874z_setmode,
                .checkmode  = generic_checkmode,
 
                .init       = {2, { TA8874Z_MONO_SET, TA8874Z_SEPARATION_DEFAULT}},
        },
        { .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;
        int rc;
 
        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;
        i2c_set_clientdata(&chip->c, chip);
 
        /* find description for the chip */
        dprintk("tvaudio: chip found @ i2c-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;
        }
        printk("tvaudio: found %s @ 0x%x\n", desc->name, addr<<1);
        dprintk("tvaudio: matches:%s%s%s.\n",
                (desc->flags & CHIP_HAS_VOLUME)     ? " volume"      : "",
                (desc->flags & CHIP_HAS_BASSTREBLE) ? " bass/treble" : "",
                (desc->flags & CHIP_HAS_INPUTSEL)   ? " audiomux"    : "");
 
        /* fill required data structures */
        strcpy(i2c_clientname(&chip->c),desc->name);
        chip->type = desc-chiplist;
        chip->shadow.count = desc->registers+1;
        chip->prevmode = -1;
        /* register */
        MOD_INC_USE_COUNT;
        i2c_attach_client(&chip->c);
 
        /* initialization  */
        if (desc->initialize != NULL)
                desc->initialize(chip);
        else
                chip_cmd(chip,"init",&desc->init);
 
        if (desc->flags & CHIP_HAS_VOLUME) {
                chip->left   = desc->leftinit   ? desc->leftinit   : 65535;
                chip->right  = desc->rightinit  ? desc->rightinit  : 65535;
                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_timer(&chip->wt);
                chip->wt.function = chip_thread_wake;
                chip->wt.data     = (unsigned long)chip;
                init_waitqueue_head(&chip->wq);
                rc = kernel_thread(chip_thread,(void *)chip,0);
                if (rc < 0)
                        printk(KERN_WARNING "%s: kernel_thread() failed\n",
                               i2c_clientname(&chip->c));
                else
                        down(&sem);
                chip->notify = NULL;
                wake_up_interruptible(&chip->wq);
        }
        return 0;
}
 
static int chip_probe(struct i2c_adapter *adap)
{
#ifdef I2C_ADAP_CLASS_TV_ANALOG
        if (adap->class & I2C_ADAP_CLASS_TV_ANALOG)
                return i2c_probe(adap, &addr_data, chip_attach);
#else
        switch (adap->id) {
        case I2C_ALGO_BIT | I2C_HW_B_BT848:
        case I2C_ALGO_BIT | I2C_HW_B_RIVA:
        case I2C_ALGO_SAA7134:
                return i2c_probe(adap, &addr_data, chip_attach);
        }
#endif
        return 0;
}
 
static int chip_detach(struct i2c_client *client)
{
        struct CHIPSTATE *chip = i2c_get_clientdata(client);
 
        del_timer(&chip->wt);
        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 = i2c_get_clientdata(client);
        struct CHIPDESC  *desc = chiplist + chip->type;
 
        dprintk("%s: chip_command 0x%x\n",i2c_clientname(&chip->c),cmd);
 
        switch (cmd) {
        case AUDC_SET_INPUT:
                if (desc->flags & CHIP_HAS_INPUTSEL) {
                        if (*sarg & 0x80)
                                chip_write_masked(chip,desc->inputreg,desc->inputmute,desc->inputmask);
                        else
                                chip_write_masked(chip,desc->inputreg,desc->inputmap[*sarg],desc->inputmask);
                }
                break;
 
        case AUDC_SET_RADIO:
                dprintk(KERN_DEBUG "tvaudio: AUDC_SET_RADIO\n");
                chip->norm = VIDEO_MODE_RADIO;
                chip->watch_stereo = 0;
                /* del_timer(&chip->wt); */
                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 (chip->norm != VIDEO_MODE_RADIO) {
                        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,(__u16)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->watch_stereo = 0;
                        /* del_timer(&chip->wt); */
                        chip->mode = va->mode;
                        desc->setmode(chip,va->mode);
                }
                break;
        }
        case VIDIOCSCHAN:
        {
                struct video_channel *vc = arg;
 
                dprintk(KERN_DEBUG "tvaudio: VIDIOCSCHAN\n");
                chip->norm = vc->norm;
                break;
        }
        case VIDIOCSFREQ:
        {
                chip->mode = 0; /* automatic */
                if (desc->checkmode) {
                        desc->setmode(chip,VIDEO_SOUND_MONO);
                        if (chip->prevmode != VIDEO_SOUND_MONO)
                                chip->prevmode = -1; /* reset previous mode */
                        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,
        .flags           = I2C_DF_NOTIFY,
        .attach_adapter  = chip_probe,
        .detach_client   = chip_detach,
        .command         = chip_command,
};
 
static struct i2c_client client_template =
{
        I2C_DEVNAME("(unset)"),
        .flags      = I2C_CLIENT_ALLOW_USE,
        .driver     = &driver,
};
 
static 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;
}
 
static 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:
 */
Browse

Tools

Subversion Repositories or1k

[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [media/] [video/] [tvaudio.c] - Blame information for rev 1774

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
2			`* experimental driver for simple i2c audio chips.`
3			`*`
4			`* Copyright (c) 2000 Gerd Knorr`
5			`* based on code by:`
6			`* Eric Sandeen (eric_sandeen@bigfoot.com)`
7			`* Steve VanDeBogart (vandebo@uclink.berkeley.edu)`
8			`* Greg Alexander (galexand@acm.org)`
9			`*`
10			`* This code is placed under the terms of the GNU General Public License`
11			`*`
12			`* OPTIONS:`
13			`* debug - set to 1 if you'd like to see debug messages`
14			`*`
15			`*/`
16
17			`#include <linux/config.h>`
18			`#include <linux/module.h>`
19			`#include <linux/kernel.h>`
20			`#include <linux/sched.h>`
21			`#include <linux/string.h>`
22			`#include <linux/timer.h>`
23			`#include <linux/delay.h>`
24			`#include <linux/errno.h>`
25			`#include <linux/slab.h>`
26			`#include <linux/videodev.h>`
27			`#include <linux/i2c.h>`
28			`#include <linux/i2c-algo-bit.h>`
29			`#include <linux/init.h>`
30			`#include <linux/smp_lock.h>`
31
32			`#include "audiochip.h"`
33			`#include "id.h"`
34			`#include "i2c-compat.h"`
35
36			`#include "tvaudio.h"`
37
38			`/* ---------------------------------------------------------------------- */`
39			`/* insmod args */`
40