Annotation of qemu/hw/wm8750.c, revision 1.1.1.8

1.1       root        1: /*
                      2:  * WM8750 audio CODEC.
                      3:  *
                      4:  * Copyright (c) 2006 Openedhand Ltd.
                      5:  * Written by Andrzej Zaborowski <balrog@zabor.org>
                      6:  *
                      7:  * This file is licensed under GNU GPL.
                      8:  */
                      9: 
                     10: #include "hw.h"
                     11: #include "i2c.h"
                     12: #include "audio/audio.h"
                     13: 
                     14: #define IN_PORT_N      3
                     15: #define OUT_PORT_N     3
                     16: 
                     17: #define CODEC          "wm8750"
                     18: 
1.1.1.3   root       19: typedef struct {
                     20:     int adc;
                     21:     int adc_hz;
                     22:     int dac;
                     23:     int dac_hz;
                     24: } WMRate;
                     25: 
                     26: typedef struct {
1.1.1.8 ! root       27:     I2CSlave i2c;
1.1       root       28:     uint8_t i2c_data[2];
                     29:     int i2c_len;
                     30:     QEMUSoundCard card;
                     31:     SWVoiceIn *adc_voice[IN_PORT_N];
                     32:     SWVoiceOut *dac_voice[OUT_PORT_N];
                     33:     int enable;
                     34:     void (*data_req)(void *, int, int);
                     35:     void *opaque;
                     36:     uint8_t data_in[4096];
                     37:     uint8_t data_out[4096];
                     38:     int idx_in, req_in;
                     39:     int idx_out, req_out;
                     40: 
                     41:     SWVoiceOut **out[2];
                     42:     uint8_t outvol[7], outmute[2];
                     43:     SWVoiceIn **in[2];
                     44:     uint8_t invol[4], inmute[2];
                     45: 
                     46:     uint8_t diff[2], pol, ds, monomix[2], alc, mute;
                     47:     uint8_t path[4], mpath[2], power, format;
1.1.1.3   root       48:     const WMRate *rate;
1.1.1.4   root       49:     uint8_t rate_vmstate;
1.1.1.2   root       50:     int adc_hz, dac_hz, ext_adc_hz, ext_dac_hz, master;
1.1.1.3   root       51: } WM8750State;
1.1       root       52: 
1.1.1.2   root       53: /* pow(10.0, -i / 20.0) * 255, i = 0..42 */
                     54: static const uint8_t wm8750_vol_db_table[] = {
                     55:     255, 227, 203, 181, 161, 143, 128, 114, 102, 90, 81, 72, 64, 57, 51, 45,
                     56:     40, 36, 32, 29, 26, 23, 20, 18, 16, 14, 13, 11, 10, 9, 8, 7, 6, 6, 5, 5,
                     57:     4, 4, 3, 3, 3, 2, 2
                     58: };
                     59: 
                     60: #define WM8750_OUTVOL_TRANSFORM(x)     wm8750_vol_db_table[(0x7f - x) / 3]
                     61: #define WM8750_INVOL_TRANSFORM(x)      (x << 2)
                     62: 
1.1.1.3   root       63: static inline void wm8750_in_load(WM8750State *s)
1.1       root       64: {
                     65:     if (s->idx_in + s->req_in <= sizeof(s->data_in))
                     66:         return;
                     67:     s->idx_in = audio_MAX(0, (int) sizeof(s->data_in) - s->req_in);
1.1.1.5   root       68:     AUD_read(*s->in[0], s->data_in + s->idx_in,
                     69:              sizeof(s->data_in) - s->idx_in);
1.1       root       70: }
                     71: 
1.1.1.3   root       72: static inline void wm8750_out_flush(WM8750State *s)
1.1       root       73: {
1.1.1.2   root       74:     int sent = 0;
                     75:     while (sent < s->idx_out)
                     76:         sent += AUD_write(*s->out[0], s->data_out + sent, s->idx_out - sent)
                     77:                 ?: s->idx_out;
1.1       root       78:     s->idx_out = 0;
                     79: }
                     80: 
                     81: static void wm8750_audio_in_cb(void *opaque, int avail_b)
                     82: {
1.1.1.3   root       83:     WM8750State *s = (WM8750State *) opaque;
1.1       root       84:     s->req_in = avail_b;
                     85:     s->data_req(s->opaque, s->req_out >> 2, avail_b >> 2);
                     86: }
                     87: 
                     88: static void wm8750_audio_out_cb(void *opaque, int free_b)
                     89: {
1.1.1.3   root       90:     WM8750State *s = (WM8750State *) opaque;
1.1       root       91: 
1.1.1.2   root       92:     if (s->idx_out >= free_b) {
                     93:         s->idx_out = free_b;
                     94:         s->req_out = 0;
                     95:         wm8750_out_flush(s);
                     96:     } else
                     97:         s->req_out = free_b - s->idx_out;
                     98:  
                     99:     s->data_req(s->opaque, s->req_out >> 2, s->req_in >> 2);
1.1       root      100: }
                    101: 
1.1.1.3   root      102: static const WMRate wm_rate_table[] = {
1.1       root      103:     {  256, 48000,  256, 48000 },      /* SR: 00000 */
                    104:     {  384, 48000,  384, 48000 },      /* SR: 00001 */
                    105:     {  256, 48000, 1536,  8000 },      /* SR: 00010 */
                    106:     {  384, 48000, 2304,  8000 },      /* SR: 00011 */
                    107:     { 1536,  8000,  256, 48000 },      /* SR: 00100 */
                    108:     { 2304,  8000,  384, 48000 },      /* SR: 00101 */
                    109:     { 1536,  8000, 1536,  8000 },      /* SR: 00110 */
                    110:     { 2304,  8000, 2304,  8000 },      /* SR: 00111 */
                    111:     { 1024, 12000, 1024, 12000 },      /* SR: 01000 */
                    112:     { 1526, 12000, 1536, 12000 },      /* SR: 01001 */
                    113:     {  768, 16000,  768, 16000 },      /* SR: 01010 */
                    114:     { 1152, 16000, 1152, 16000 },      /* SR: 01011 */
                    115:     {  384, 32000,  384, 32000 },      /* SR: 01100 */
                    116:     {  576, 32000,  576, 32000 },      /* SR: 01101 */
                    117:     {  128, 96000,  128, 96000 },      /* SR: 01110 */
                    118:     {  192, 96000,  192, 96000 },      /* SR: 01111 */
                    119:     {  256, 44100,  256, 44100 },      /* SR: 10000 */
                    120:     {  384, 44100,  384, 44100 },      /* SR: 10001 */
                    121:     {  256, 44100, 1408,  8018 },      /* SR: 10010 */
                    122:     {  384, 44100, 2112,  8018 },      /* SR: 10011 */
                    123:     { 1408,  8018,  256, 44100 },      /* SR: 10100 */
                    124:     { 2112,  8018,  384, 44100 },      /* SR: 10101 */
                    125:     { 1408,  8018, 1408,  8018 },      /* SR: 10110 */
                    126:     { 2112,  8018, 2112,  8018 },      /* SR: 10111 */
                    127:     { 1024, 11025, 1024, 11025 },      /* SR: 11000 */
                    128:     { 1536, 11025, 1536, 11025 },      /* SR: 11001 */
                    129:     {  512, 22050,  512, 22050 },      /* SR: 11010 */
                    130:     {  768, 22050,  768, 22050 },      /* SR: 11011 */
                    131:     {  512, 24000,  512, 24000 },      /* SR: 11100 */
                    132:     {  768, 24000,  768, 24000 },      /* SR: 11101 */
                    133:     {  128, 88200,  128, 88200 },      /* SR: 11110 */
1.1.1.2   root      134:     {  192, 88200,  192, 88200 },      /* SR: 11111 */
1.1       root      135: };
                    136: 
1.1.1.3   root      137: static void wm8750_vol_update(WM8750State *s)
1.1.1.2   root      138: {
                    139:     /* FIXME: multiply all volumes by s->invol[2], s->invol[3] */
                    140: 
                    141:     AUD_set_volume_in(s->adc_voice[0], s->mute,
                    142:                     s->inmute[0] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[0]),
                    143:                     s->inmute[1] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[1]));
                    144:     AUD_set_volume_in(s->adc_voice[1], s->mute,
                    145:                     s->inmute[0] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[0]),
                    146:                     s->inmute[1] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[1]));
                    147:     AUD_set_volume_in(s->adc_voice[2], s->mute,
                    148:                     s->inmute[0] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[0]),
                    149:                     s->inmute[1] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[1]));
                    150: 
                    151:     /* FIXME: multiply all volumes by s->outvol[0], s->outvol[1] */
                    152: 
                    153:     /* Speaker: LOUT2VOL ROUT2VOL */
                    154:     AUD_set_volume_out(s->dac_voice[0], s->mute,
                    155:                     s->outmute[0] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[4]),
                    156:                     s->outmute[1] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[5]));
                    157: 
                    158:     /* Headphone: LOUT1VOL ROUT1VOL */
                    159:     AUD_set_volume_out(s->dac_voice[1], s->mute,
                    160:                     s->outmute[0] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[2]),
                    161:                     s->outmute[1] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[3]));
                    162: 
                    163:     /* MONOOUT: MONOVOL MONOVOL */
                    164:     AUD_set_volume_out(s->dac_voice[2], s->mute,
                    165:                     s->outmute[0] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[6]),
                    166:                     s->outmute[1] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[6]));
                    167: }
                    168: 
1.1.1.3   root      169: static void wm8750_set_format(WM8750State *s)
1.1       root      170: {
                    171:     int i;
1.1.1.2   root      172:     struct audsettings in_fmt;
                    173:     struct audsettings out_fmt;
1.1       root      174: 
                    175:     wm8750_out_flush(s);
                    176: 
                    177:     if (s->in[0] && *s->in[0])
                    178:         AUD_set_active_in(*s->in[0], 0);
                    179:     if (s->out[0] && *s->out[0])
                    180:         AUD_set_active_out(*s->out[0], 0);
                    181: 
                    182:     for (i = 0; i < IN_PORT_N; i ++)
                    183:         if (s->adc_voice[i]) {
                    184:             AUD_close_in(&s->card, s->adc_voice[i]);
1.1.1.3   root      185:             s->adc_voice[i] = NULL;
1.1       root      186:         }
                    187:     for (i = 0; i < OUT_PORT_N; i ++)
                    188:         if (s->dac_voice[i]) {
                    189:             AUD_close_out(&s->card, s->dac_voice[i]);
1.1.1.3   root      190:             s->dac_voice[i] = NULL;
1.1       root      191:         }
                    192: 
                    193:     if (!s->enable)
                    194:         return;
                    195: 
                    196:     /* Setup input */
                    197:     in_fmt.endianness = 0;
                    198:     in_fmt.nchannels = 2;
1.1.1.2   root      199:     in_fmt.freq = s->adc_hz;
1.1       root      200:     in_fmt.fmt = AUD_FMT_S16;
                    201: 
                    202:     s->adc_voice[0] = AUD_open_in(&s->card, s->adc_voice[0],
                    203:                     CODEC ".input1", s, wm8750_audio_in_cb, &in_fmt);
                    204:     s->adc_voice[1] = AUD_open_in(&s->card, s->adc_voice[1],
                    205:                     CODEC ".input2", s, wm8750_audio_in_cb, &in_fmt);
                    206:     s->adc_voice[2] = AUD_open_in(&s->card, s->adc_voice[2],
                    207:                     CODEC ".input3", s, wm8750_audio_in_cb, &in_fmt);
                    208: 
                    209:     /* Setup output */
                    210:     out_fmt.endianness = 0;
                    211:     out_fmt.nchannels = 2;
1.1.1.2   root      212:     out_fmt.freq = s->dac_hz;
1.1       root      213:     out_fmt.fmt = AUD_FMT_S16;
                    214: 
                    215:     s->dac_voice[0] = AUD_open_out(&s->card, s->dac_voice[0],
                    216:                     CODEC ".speaker", s, wm8750_audio_out_cb, &out_fmt);
                    217:     s->dac_voice[1] = AUD_open_out(&s->card, s->dac_voice[1],
                    218:                     CODEC ".headphone", s, wm8750_audio_out_cb, &out_fmt);
                    219:     /* MONOMIX is also in stereo for simplicity */
                    220:     s->dac_voice[2] = AUD_open_out(&s->card, s->dac_voice[2],
                    221:                     CODEC ".monomix", s, wm8750_audio_out_cb, &out_fmt);
                    222:     /* no sense emulating OUT3 which is a mix of other outputs */
                    223: 
1.1.1.2   root      224:     wm8750_vol_update(s);
                    225: 
1.1       root      226:     /* We should connect the left and right channels to their
                    227:      * respective inputs/outputs but we have completely no need
                    228:      * for mixing or combining paths to different ports, so we
                    229:      * connect both channels to where the left channel is routed.  */
                    230:     if (s->in[0] && *s->in[0])
                    231:         AUD_set_active_in(*s->in[0], 1);
                    232:     if (s->out[0] && *s->out[0])
                    233:         AUD_set_active_out(*s->out[0], 1);
                    234: }
                    235: 
1.1.1.3   root      236: static void wm8750_clk_update(WM8750State *s, int ext)
1.1       root      237: {
1.1.1.2   root      238:     if (s->master || !s->ext_dac_hz)
                    239:         s->dac_hz = s->rate->dac_hz;
                    240:     else
                    241:         s->dac_hz = s->ext_dac_hz;
                    242: 
                    243:     if (s->master || !s->ext_adc_hz)
                    244:         s->adc_hz = s->rate->adc_hz;
                    245:     else
                    246:         s->adc_hz = s->ext_adc_hz;
                    247: 
                    248:     if (s->master || (!s->ext_dac_hz && !s->ext_adc_hz)) {
                    249:         if (!ext)
                    250:             wm8750_set_format(s);
                    251:     } else {
                    252:         if (ext)
                    253:             wm8750_set_format(s);
                    254:     }
1.1       root      255: }
                    256: 
1.1.1.8 ! root      257: static void wm8750_reset(I2CSlave *i2c)
1.1       root      258: {
1.1.1.3   root      259:     WM8750State *s = (WM8750State *) i2c;
1.1.1.2   root      260:     s->rate = &wm_rate_table[0];
1.1       root      261:     s->enable = 0;
1.1.1.2   root      262:     wm8750_clk_update(s, 1);
1.1       root      263:     s->diff[0] = 0;
                    264:     s->diff[1] = 0;
                    265:     s->ds = 0;
                    266:     s->alc = 0;
                    267:     s->in[0] = &s->adc_voice[0];
                    268:     s->invol[0] = 0x17;
                    269:     s->invol[1] = 0x17;
                    270:     s->invol[2] = 0xc3;
                    271:     s->invol[3] = 0xc3;
                    272:     s->out[0] = &s->dac_voice[0];
                    273:     s->outvol[0] = 0xff;
                    274:     s->outvol[1] = 0xff;
                    275:     s->outvol[2] = 0x79;
                    276:     s->outvol[3] = 0x79;
                    277:     s->outvol[4] = 0x79;
                    278:     s->outvol[5] = 0x79;
1.1.1.2   root      279:     s->outvol[6] = 0x79;
1.1       root      280:     s->inmute[0] = 0;
                    281:     s->inmute[1] = 0;
                    282:     s->outmute[0] = 0;
                    283:     s->outmute[1] = 0;
                    284:     s->mute = 1;
                    285:     s->path[0] = 0;
                    286:     s->path[1] = 0;
                    287:     s->path[2] = 0;
                    288:     s->path[3] = 0;
                    289:     s->mpath[0] = 0;
                    290:     s->mpath[1] = 0;
                    291:     s->format = 0x0a;
                    292:     s->idx_in = sizeof(s->data_in);
                    293:     s->req_in = 0;
                    294:     s->idx_out = 0;
                    295:     s->req_out = 0;
1.1.1.2   root      296:     wm8750_vol_update(s);
1.1       root      297:     s->i2c_len = 0;
                    298: }
                    299: 
1.1.1.8 ! root      300: static void wm8750_event(I2CSlave *i2c, enum i2c_event event)
1.1       root      301: {
1.1.1.3   root      302:     WM8750State *s = (WM8750State *) i2c;
1.1       root      303: 
                    304:     switch (event) {
                    305:     case I2C_START_SEND:
                    306:         s->i2c_len = 0;
                    307:         break;
                    308:     case I2C_FINISH:
                    309: #ifdef VERBOSE
                    310:         if (s->i2c_len < 2)
                    311:             printf("%s: message too short (%i bytes)\n",
                    312:                             __FUNCTION__, s->i2c_len);
                    313: #endif
                    314:         break;
                    315:     default:
                    316:         break;
                    317:     }
                    318: }
                    319: 
                    320: #define WM8750_LINVOL  0x00
                    321: #define WM8750_RINVOL  0x01
                    322: #define WM8750_LOUT1V  0x02
                    323: #define WM8750_ROUT1V  0x03
                    324: #define WM8750_ADCDAC  0x05
                    325: #define WM8750_IFACE   0x07
                    326: #define WM8750_SRATE   0x08
                    327: #define WM8750_LDAC    0x0a
                    328: #define WM8750_RDAC    0x0b
                    329: #define WM8750_BASS    0x0c
                    330: #define WM8750_TREBLE  0x0d
                    331: #define WM8750_RESET   0x0f
                    332: #define WM8750_3D      0x10
                    333: #define WM8750_ALC1    0x11
                    334: #define WM8750_ALC2    0x12
                    335: #define WM8750_ALC3    0x13
                    336: #define WM8750_NGATE   0x14
                    337: #define WM8750_LADC    0x15
                    338: #define WM8750_RADC    0x16
                    339: #define WM8750_ADCTL1  0x17
                    340: #define WM8750_ADCTL2  0x18
                    341: #define WM8750_PWR1    0x19
                    342: #define WM8750_PWR2    0x1a
                    343: #define WM8750_ADCTL3  0x1b
                    344: #define WM8750_ADCIN   0x1f
                    345: #define WM8750_LADCIN  0x20
                    346: #define WM8750_RADCIN  0x21
                    347: #define WM8750_LOUTM1  0x22
                    348: #define WM8750_LOUTM2  0x23
                    349: #define WM8750_ROUTM1  0x24
                    350: #define WM8750_ROUTM2  0x25
                    351: #define WM8750_MOUTM1  0x26
                    352: #define WM8750_MOUTM2  0x27
                    353: #define WM8750_LOUT2V  0x28
                    354: #define WM8750_ROUT2V  0x29
                    355: #define WM8750_MOUTV   0x2a
                    356: 
1.1.1.8 ! root      357: static int wm8750_tx(I2CSlave *i2c, uint8_t data)
1.1       root      358: {
1.1.1.3   root      359:     WM8750State *s = (WM8750State *) i2c;
1.1       root      360:     uint8_t cmd;
                    361:     uint16_t value;
                    362: 
                    363:     if (s->i2c_len >= 2) {
                    364:         printf("%s: long message (%i bytes)\n", __FUNCTION__, s->i2c_len);
                    365: #ifdef VERBOSE
                    366:         return 1;
                    367: #endif
                    368:     }
                    369:     s->i2c_data[s->i2c_len ++] = data;
                    370:     if (s->i2c_len != 2)
                    371:         return 0;
                    372: 
                    373:     cmd = s->i2c_data[0] >> 1;
                    374:     value = ((s->i2c_data[0] << 8) | s->i2c_data[1]) & 0x1ff;
                    375: 
                    376:     switch (cmd) {
                    377:     case WM8750_LADCIN:        /* ADC Signal Path Control (Left) */
                    378:         s->diff[0] = (((value >> 6) & 3) == 3);        /* LINSEL */
                    379:         if (s->diff[0])
                    380:             s->in[0] = &s->adc_voice[0 + s->ds * 1];
                    381:         else
                    382:             s->in[0] = &s->adc_voice[((value >> 6) & 3) * 1 + 0];
                    383:         break;
                    384: 
                    385:     case WM8750_RADCIN:        /* ADC Signal Path Control (Right) */
                    386:         s->diff[1] = (((value >> 6) & 3) == 3);        /* RINSEL */
                    387:         if (s->diff[1])
                    388:             s->in[1] = &s->adc_voice[0 + s->ds * 1];
                    389:         else
                    390:             s->in[1] = &s->adc_voice[((value >> 6) & 3) * 1 + 0];
                    391:         break;
                    392: 
                    393:     case WM8750_ADCIN: /* ADC Input Mode */
                    394:         s->ds = (value >> 8) & 1;      /* DS */
                    395:         if (s->diff[0])
                    396:             s->in[0] = &s->adc_voice[0 + s->ds * 1];
                    397:         if (s->diff[1])
                    398:             s->in[1] = &s->adc_voice[0 + s->ds * 1];
                    399:         s->monomix[0] = (value >> 6) & 3;      /* MONOMIX */
                    400:         break;
                    401: 
                    402:     case WM8750_ADCTL1:        /* Additional Control (1) */
                    403:         s->monomix[1] = (value >> 1) & 1;      /* DMONOMIX */
                    404:         break;
                    405: 
                    406:     case WM8750_PWR1:  /* Power Management (1) */
                    407:         s->enable = ((value >> 6) & 7) == 3;   /* VMIDSEL, VREF */
                    408:         wm8750_set_format(s);
                    409:         break;
                    410: 
                    411:     case WM8750_LINVOL:        /* Left Channel PGA */
                    412:         s->invol[0] = value & 0x3f;            /* LINVOL */
                    413:         s->inmute[0] = (value >> 7) & 1;       /* LINMUTE */
1.1.1.2   root      414:         wm8750_vol_update(s);
1.1       root      415:         break;
                    416: 
                    417:     case WM8750_RINVOL:        /* Right Channel PGA */
                    418:         s->invol[1] = value & 0x3f;            /* RINVOL */
                    419:         s->inmute[1] = (value >> 7) & 1;       /* RINMUTE */
1.1.1.2   root      420:         wm8750_vol_update(s);
1.1       root      421:         break;
                    422: 
                    423:     case WM8750_ADCDAC:        /* ADC and DAC Control */
                    424:         s->pol = (value >> 5) & 3;             /* ADCPOL */
                    425:         s->mute = (value >> 3) & 1;            /* DACMU */
1.1.1.2   root      426:         wm8750_vol_update(s);
1.1       root      427:         break;
                    428: 
                    429:     case WM8750_ADCTL3:        /* Additional Control (3) */
                    430:         break;
                    431: 
                    432:     case WM8750_LADC:  /* Left ADC Digital Volume */
                    433:         s->invol[2] = value & 0xff;            /* LADCVOL */
1.1.1.2   root      434:         wm8750_vol_update(s);
1.1       root      435:         break;
                    436: 
                    437:     case WM8750_RADC:  /* Right ADC Digital Volume */
                    438:         s->invol[3] = value & 0xff;            /* RADCVOL */
1.1.1.2   root      439:         wm8750_vol_update(s);
1.1       root      440:         break;
                    441: 
                    442:     case WM8750_ALC1:  /* ALC Control (1) */
                    443:         s->alc = (value >> 7) & 3;             /* ALCSEL */
                    444:         break;
                    445: 
                    446:     case WM8750_NGATE: /* Noise Gate Control */
                    447:     case WM8750_3D:    /* 3D enhance */
                    448:         break;
                    449: 
                    450:     case WM8750_LDAC:  /* Left Channel Digital Volume */
                    451:         s->outvol[0] = value & 0xff;           /* LDACVOL */
1.1.1.2   root      452:         wm8750_vol_update(s);
1.1       root      453:         break;
                    454: 
                    455:     case WM8750_RDAC:  /* Right Channel Digital Volume */
                    456:         s->outvol[1] = value & 0xff;           /* RDACVOL */
1.1.1.2   root      457:         wm8750_vol_update(s);
1.1       root      458:         break;
                    459: 
                    460:     case WM8750_BASS:  /* Bass Control */
                    461:         break;
                    462: 
                    463:     case WM8750_LOUTM1:        /* Left Mixer Control (1) */
                    464:         s->path[0] = (value >> 8) & 1;         /* LD2LO */
1.1.1.2   root      465:         /* TODO: mute/unmute respective paths */
                    466:         wm8750_vol_update(s);
1.1       root      467:         break;
                    468: 
                    469:     case WM8750_LOUTM2:        /* Left Mixer Control (2) */
                    470:         s->path[1] = (value >> 8) & 1;         /* RD2LO */
1.1.1.2   root      471:         /* TODO: mute/unmute respective paths */
                    472:         wm8750_vol_update(s);
1.1       root      473:         break;
                    474: 
                    475:     case WM8750_ROUTM1:        /* Right Mixer Control (1) */
                    476:         s->path[2] = (value >> 8) & 1;         /* LD2RO */
1.1.1.2   root      477:         /* TODO: mute/unmute respective paths */
                    478:         wm8750_vol_update(s);
1.1       root      479:         break;
                    480: 
                    481:     case WM8750_ROUTM2:        /* Right Mixer Control (2) */
                    482:         s->path[3] = (value >> 8) & 1;         /* RD2RO */
1.1.1.2   root      483:         /* TODO: mute/unmute respective paths */
                    484:         wm8750_vol_update(s);
1.1       root      485:         break;
                    486: 
                    487:     case WM8750_MOUTM1:        /* Mono Mixer Control (1) */
                    488:         s->mpath[0] = (value >> 8) & 1;                /* LD2MO */
1.1.1.2   root      489:         /* TODO: mute/unmute respective paths */
                    490:         wm8750_vol_update(s);
1.1       root      491:         break;
                    492: 
                    493:     case WM8750_MOUTM2:        /* Mono Mixer Control (2) */
                    494:         s->mpath[1] = (value >> 8) & 1;                /* RD2MO */
1.1.1.2   root      495:         /* TODO: mute/unmute respective paths */
                    496:         wm8750_vol_update(s);
1.1       root      497:         break;
                    498: 
                    499:     case WM8750_LOUT1V:        /* LOUT1 Volume */
1.1.1.2   root      500:         s->outvol[2] = value & 0x7f;           /* LOUT1VOL */
                    501:         wm8750_vol_update(s);
1.1       root      502:         break;
                    503: 
                    504:     case WM8750_LOUT2V:        /* LOUT2 Volume */
                    505:         s->outvol[4] = value & 0x7f;           /* LOUT2VOL */
1.1.1.2   root      506:         wm8750_vol_update(s);
1.1       root      507:         break;
                    508: 
                    509:     case WM8750_ROUT1V:        /* ROUT1 Volume */
1.1.1.2   root      510:         s->outvol[3] = value & 0x7f;           /* ROUT1VOL */
                    511:         wm8750_vol_update(s);
1.1       root      512:         break;
                    513: 
                    514:     case WM8750_ROUT2V:        /* ROUT2 Volume */
                    515:         s->outvol[5] = value & 0x7f;           /* ROUT2VOL */
1.1.1.2   root      516:         wm8750_vol_update(s);
1.1       root      517:         break;
                    518: 
                    519:     case WM8750_MOUTV: /* MONOOUT Volume */
                    520:         s->outvol[6] = value & 0x7f;           /* MONOOUTVOL */
1.1.1.2   root      521:         wm8750_vol_update(s);
1.1       root      522:         break;
                    523: 
                    524:     case WM8750_ADCTL2:        /* Additional Control (2) */
                    525:         break;
                    526: 
                    527:     case WM8750_PWR2:  /* Power Management (2) */
                    528:         s->power = value & 0x7e;
1.1.1.2   root      529:         /* TODO: mute/unmute respective paths */
                    530:         wm8750_vol_update(s);
1.1       root      531:         break;
                    532: 
                    533:     case WM8750_IFACE: /* Digital Audio Interface Format */
                    534:         s->format = value;
1.1.1.2   root      535:         s->master = (value >> 6) & 1;                  /* MS */
                    536:         wm8750_clk_update(s, s->master);
1.1       root      537:         break;
                    538: 
                    539:     case WM8750_SRATE: /* Clocking and Sample Rate Control */
                    540:         s->rate = &wm_rate_table[(value >> 1) & 0x1f];
1.1.1.2   root      541:         wm8750_clk_update(s, 0);
1.1       root      542:         break;
                    543: 
                    544:     case WM8750_RESET: /* Reset */
                    545:         wm8750_reset(&s->i2c);
                    546:         break;
                    547: 
                    548: #ifdef VERBOSE
                    549:     default:
                    550:         printf("%s: unknown register %02x\n", __FUNCTION__, cmd);
                    551: #endif
                    552:     }
                    553: 
                    554:     return 0;
                    555: }
                    556: 
1.1.1.8 ! root      557: static int wm8750_rx(I2CSlave *i2c)
1.1       root      558: {
                    559:     return 0x00;
                    560: }
                    561: 
1.1.1.4   root      562: static void wm8750_pre_save(void *opaque)
1.1       root      563: {
1.1.1.4   root      564:     WM8750State *s = opaque;
                    565: 
1.1.1.8 ! root      566:     s->rate_vmstate = s->rate - wm_rate_table;
1.1       root      567: }
                    568: 
1.1.1.4   root      569: static int wm8750_post_load(void *opaque, int version_id)
1.1       root      570: {
1.1.1.4   root      571:     WM8750State *s = opaque;
                    572: 
                    573:     s->rate = &wm_rate_table[s->rate_vmstate & 0x1f];
1.1       root      574:     return 0;
                    575: }
                    576: 
1.1.1.4   root      577: static const VMStateDescription vmstate_wm8750 = {
                    578:     .name = CODEC,
                    579:     .version_id = 0,
                    580:     .minimum_version_id = 0,
                    581:     .minimum_version_id_old = 0,
                    582:     .pre_save = wm8750_pre_save,
                    583:     .post_load = wm8750_post_load,
                    584:     .fields      = (VMStateField []) {
                    585:         VMSTATE_UINT8_ARRAY(i2c_data, WM8750State, 2),
                    586:         VMSTATE_INT32(i2c_len, WM8750State),
                    587:         VMSTATE_INT32(enable, WM8750State),
                    588:         VMSTATE_INT32(idx_in, WM8750State),
                    589:         VMSTATE_INT32(req_in, WM8750State),
                    590:         VMSTATE_INT32(idx_out, WM8750State),
                    591:         VMSTATE_INT32(req_out, WM8750State),
                    592:         VMSTATE_UINT8_ARRAY(outvol, WM8750State, 7),
                    593:         VMSTATE_UINT8_ARRAY(outmute, WM8750State, 2),
                    594:         VMSTATE_UINT8_ARRAY(invol, WM8750State, 4),
                    595:         VMSTATE_UINT8_ARRAY(inmute, WM8750State, 2),
                    596:         VMSTATE_UINT8_ARRAY(diff, WM8750State, 2),
                    597:         VMSTATE_UINT8(pol, WM8750State),
                    598:         VMSTATE_UINT8(ds, WM8750State),
                    599:         VMSTATE_UINT8_ARRAY(monomix, WM8750State, 2),
                    600:         VMSTATE_UINT8(alc, WM8750State),
                    601:         VMSTATE_UINT8(mute, WM8750State),
                    602:         VMSTATE_UINT8_ARRAY(path, WM8750State, 4),
                    603:         VMSTATE_UINT8_ARRAY(mpath, WM8750State, 2),
                    604:         VMSTATE_UINT8(format, WM8750State),
                    605:         VMSTATE_UINT8(power, WM8750State),
                    606:         VMSTATE_UINT8(rate_vmstate, WM8750State),
                    607:         VMSTATE_I2C_SLAVE(i2c, WM8750State),
                    608:         VMSTATE_END_OF_LIST()
                    609:     }
                    610: };
                    611: 
1.1.1.8 ! root      612: static int wm8750_init(I2CSlave *i2c)
1.1       root      613: {
1.1.1.3   root      614:     WM8750State *s = FROM_I2C_SLAVE(WM8750State, i2c);
1.1       root      615: 
1.1.1.3   root      616:     AUD_register_card(CODEC, &s->card);
1.1       root      617:     wm8750_reset(&s->i2c);
                    618: 
1.1.1.4   root      619:     return 0;
1.1       root      620: }
                    621: 
1.1.1.2   root      622: #if 0
1.1.1.8 ! root      623: static void wm8750_fini(I2CSlave *i2c)
1.1       root      624: {
1.1.1.3   root      625:     WM8750State *s = (WM8750State *) i2c;
1.1       root      626:     wm8750_reset(&s->i2c);
                    627:     AUD_remove_card(&s->card);
1.1.1.7   root      628:     g_free(s);
1.1       root      629: }
1.1.1.2   root      630: #endif
1.1       root      631: 
1.1.1.3   root      632: void wm8750_data_req_set(DeviceState *dev,
1.1       root      633:                 void (*data_req)(void *, int, int), void *opaque)
                    634: {
1.1.1.3   root      635:     WM8750State *s = FROM_I2C_SLAVE(WM8750State, I2C_SLAVE_FROM_QDEV(dev));
1.1       root      636:     s->data_req = data_req;
                    637:     s->opaque = opaque;
                    638: }
                    639: 
                    640: void wm8750_dac_dat(void *opaque, uint32_t sample)
                    641: {
1.1.1.3   root      642:     WM8750State *s = (WM8750State *) opaque;
1.1.1.2   root      643: 
                    644:     *(uint32_t *) &s->data_out[s->idx_out] = sample;
1.1       root      645:     s->req_out -= 4;
                    646:     s->idx_out += 4;
                    647:     if (s->idx_out >= sizeof(s->data_out) || s->req_out <= 0)
                    648:         wm8750_out_flush(s);
                    649: }
                    650: 
1.1.1.2   root      651: void *wm8750_dac_buffer(void *opaque, int samples)
                    652: {
1.1.1.3   root      653:     WM8750State *s = (WM8750State *) opaque;
1.1.1.2   root      654:     /* XXX: Should check if there are <i>samples</i> free samples available */
                    655:     void *ret = s->data_out + s->idx_out;
                    656: 
                    657:     s->idx_out += samples << 2;
                    658:     s->req_out -= samples << 2;
                    659:     return ret;
                    660: }
                    661: 
                    662: void wm8750_dac_commit(void *opaque)
                    663: {
1.1.1.3   root      664:     WM8750State *s = (WM8750State *) opaque;
1.1.1.2   root      665: 
1.1.1.3   root      666:     wm8750_out_flush(s);
1.1.1.2   root      667: }
                    668: 
1.1       root      669: uint32_t wm8750_adc_dat(void *opaque)
                    670: {
1.1.1.3   root      671:     WM8750State *s = (WM8750State *) opaque;
1.1       root      672:     uint32_t *data;
1.1.1.2   root      673: 
1.1       root      674:     if (s->idx_in >= sizeof(s->data_in))
                    675:         wm8750_in_load(s);
1.1.1.2   root      676: 
1.1       root      677:     data = (uint32_t *) &s->data_in[s->idx_in];
                    678:     s->req_in -= 4;
                    679:     s->idx_in += 4;
1.1.1.2   root      680:     return *data;
                    681: }
                    682: 
                    683: void wm8750_set_bclk_in(void *opaque, int new_hz)
                    684: {
1.1.1.3   root      685:     WM8750State *s = (WM8750State *) opaque;
1.1.1.2   root      686: 
                    687:     s->ext_adc_hz = new_hz;
                    688:     s->ext_dac_hz = new_hz;
                    689:     wm8750_clk_update(s, 1);
1.1       root      690: }
1.1.1.3   root      691: 
1.1.1.8 ! root      692: static void wm8750_class_init(ObjectClass *klass, void *data)
        !           693: {
        !           694:     DeviceClass *dc = DEVICE_CLASS(klass);
        !           695:     I2CSlaveClass *sc = I2C_SLAVE_CLASS(klass);
        !           696: 
        !           697:     sc->init = wm8750_init;
        !           698:     sc->event = wm8750_event;
        !           699:     sc->recv = wm8750_rx;
        !           700:     sc->send = wm8750_tx;
        !           701:     dc->vmsd = &vmstate_wm8750;
        !           702: }
        !           703: 
        !           704: static TypeInfo wm8750_info = {
        !           705:     .name          = "wm8750",
        !           706:     .parent        = TYPE_I2C_SLAVE,
        !           707:     .instance_size = sizeof(WM8750State),
        !           708:     .class_init    = wm8750_class_init,
1.1.1.3   root      709: };
                    710: 
1.1.1.8 ! root      711: static void wm8750_register_types(void)
1.1.1.3   root      712: {
1.1.1.8 ! root      713:     type_register_static(&wm8750_info);
1.1.1.3   root      714: }
                    715: 
1.1.1.8 ! root      716: type_init(wm8750_register_types)

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