xref: /illumos-kvm-cmd/hw/wm8750.c (revision 68396ea9)
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 
19 typedef struct {
20     int adc;
21     int adc_hz;
22     int dac;
23     int dac_hz;
24 } WMRate;
25 
26 typedef struct {
27     i2c_slave i2c;
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;
48     const WMRate *rate;
49     uint8_t rate_vmstate;
50     int adc_hz, dac_hz, ext_adc_hz, ext_dac_hz, master;
51 } WM8750State;
52 
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 
wm8750_in_load(WM8750State * s)63 static inline void wm8750_in_load(WM8750State *s)
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);
68     AUD_read(*s->in[0], s->data_in + s->idx_in,
69              sizeof(s->data_in) - s->idx_in);
70 }
71 
wm8750_out_flush(WM8750State * s)72 static inline void wm8750_out_flush(WM8750State *s)
73 {
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;
78     s->idx_out = 0;
79 }
80 
wm8750_audio_in_cb(void * opaque,int avail_b)81 static void wm8750_audio_in_cb(void *opaque, int avail_b)
82 {
83     WM8750State *s = (WM8750State *) opaque;
84     s->req_in = avail_b;
85     s->data_req(s->opaque, s->req_out >> 2, avail_b >> 2);
86 }
87 
wm8750_audio_out_cb(void * opaque,int free_b)88 static void wm8750_audio_out_cb(void *opaque, int free_b)
89 {
90     WM8750State *s = (WM8750State *) opaque;
91 
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);
100 }
101 
102 static const WMRate wm_rate_table[] = {
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 */
134     {  192, 88200,  192, 88200 },	/* SR: 11111 */
135 };
136 
wm8750_vol_update(WM8750State * s)137 static void wm8750_vol_update(WM8750State *s)
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 
wm8750_set_format(WM8750State * s)169 static void wm8750_set_format(WM8750State *s)
170 {
171     int i;
172     struct audsettings in_fmt;
173     struct audsettings out_fmt;
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]);
185             s->adc_voice[i] = NULL;
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]);
190             s->dac_voice[i] = NULL;
191         }
192 
193     if (!s->enable)
194         return;
195 
196     /* Setup input */
197     in_fmt.endianness = 0;
198     in_fmt.nchannels = 2;
199     in_fmt.freq = s->adc_hz;
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;
212     out_fmt.freq = s->dac_hz;
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 
224     wm8750_vol_update(s);
225 
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 
wm8750_clk_update(WM8750State * s,int ext)236 static void wm8750_clk_update(WM8750State *s, int ext)
237 {
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     }
255 }
256 
wm8750_reset(i2c_slave * i2c)257 static void wm8750_reset(i2c_slave *i2c)
258 {
259     WM8750State *s = (WM8750State *) i2c;
260     s->rate = &wm_rate_table[0];
261     s->enable = 0;
262     wm8750_clk_update(s, 1);
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;
279     s->outvol[6] = 0x79;
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;
296     wm8750_vol_update(s);
297     s->i2c_len = 0;
298 }
299 
wm8750_event(i2c_slave * i2c,enum i2c_event event)300 static void wm8750_event(i2c_slave *i2c, enum i2c_event event)
301 {
302     WM8750State *s = (WM8750State *) i2c;
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 
wm8750_tx(i2c_slave * i2c,uint8_t data)357 static int wm8750_tx(i2c_slave *i2c, uint8_t data)
358 {
359     WM8750State *s = (WM8750State *) i2c;
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 */
414         wm8750_vol_update(s);
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 */
420         wm8750_vol_update(s);
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 */
426         wm8750_vol_update(s);
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 */
434         wm8750_vol_update(s);
435         break;
436 
437     case WM8750_RADC:	/* Right ADC Digital Volume */
438         s->invol[3] = value & 0xff;		/* RADCVOL */
439         wm8750_vol_update(s);
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 */
452         wm8750_vol_update(s);
453         break;
454 
455     case WM8750_RDAC:	/* Right Channel Digital Volume */
456         s->outvol[1] = value & 0xff;		/* RDACVOL */
457         wm8750_vol_update(s);
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 */
465         /* TODO: mute/unmute respective paths */
466         wm8750_vol_update(s);
467         break;
468 
469     case WM8750_LOUTM2:	/* Left Mixer Control (2) */
470         s->path[1] = (value >> 8) & 1;		/* RD2LO */
471         /* TODO: mute/unmute respective paths */
472         wm8750_vol_update(s);
473         break;
474 
475     case WM8750_ROUTM1:	/* Right Mixer Control (1) */
476         s->path[2] = (value >> 8) & 1;		/* LD2RO */
477         /* TODO: mute/unmute respective paths */
478         wm8750_vol_update(s);
479         break;
480 
481     case WM8750_ROUTM2:	/* Right Mixer Control (2) */
482         s->path[3] = (value >> 8) & 1;		/* RD2RO */
483         /* TODO: mute/unmute respective paths */
484         wm8750_vol_update(s);
485         break;
486 
487     case WM8750_MOUTM1:	/* Mono Mixer Control (1) */
488         s->mpath[0] = (value >> 8) & 1;		/* LD2MO */
489         /* TODO: mute/unmute respective paths */
490         wm8750_vol_update(s);
491         break;
492 
493     case WM8750_MOUTM2:	/* Mono Mixer Control (2) */
494         s->mpath[1] = (value >> 8) & 1;		/* RD2MO */
495         /* TODO: mute/unmute respective paths */
496         wm8750_vol_update(s);
497         break;
498 
499     case WM8750_LOUT1V:	/* LOUT1 Volume */
500         s->outvol[2] = value & 0x7f;		/* LOUT1VOL */
501         wm8750_vol_update(s);
502         break;
503 
504     case WM8750_LOUT2V:	/* LOUT2 Volume */
505         s->outvol[4] = value & 0x7f;		/* LOUT2VOL */
506         wm8750_vol_update(s);
507         break;
508 
509     case WM8750_ROUT1V:	/* ROUT1 Volume */
510         s->outvol[3] = value & 0x7f;		/* ROUT1VOL */
511         wm8750_vol_update(s);
512         break;
513 
514     case WM8750_ROUT2V:	/* ROUT2 Volume */
515         s->outvol[5] = value & 0x7f;		/* ROUT2VOL */
516         wm8750_vol_update(s);
517         break;
518 
519     case WM8750_MOUTV:	/* MONOOUT Volume */
520         s->outvol[6] = value & 0x7f;		/* MONOOUTVOL */
521         wm8750_vol_update(s);
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;
529         /* TODO: mute/unmute respective paths */
530         wm8750_vol_update(s);
531         break;
532 
533     case WM8750_IFACE:	/* Digital Audio Interface Format */
534         s->format = value;
535         s->master = (value >> 6) & 1;			/* MS */
536         wm8750_clk_update(s, s->master);
537         break;
538 
539     case WM8750_SRATE:	/* Clocking and Sample Rate Control */
540         s->rate = &wm_rate_table[(value >> 1) & 0x1f];
541         wm8750_clk_update(s, 0);
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 
wm8750_rx(i2c_slave * i2c)557 static int wm8750_rx(i2c_slave *i2c)
558 {
559     return 0x00;
560 }
561 
wm8750_pre_save(void * opaque)562 static void wm8750_pre_save(void *opaque)
563 {
564     WM8750State *s = opaque;
565 
566     s->rate_vmstate = (s->rate - wm_rate_table) / sizeof(*s->rate);
567 }
568 
wm8750_post_load(void * opaque,int version_id)569 static int wm8750_post_load(void *opaque, int version_id)
570 {
571     WM8750State *s = opaque;
572 
573     s->rate = &wm_rate_table[s->rate_vmstate & 0x1f];
574     return 0;
575 }
576 
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 
wm8750_init(i2c_slave * i2c)612 static int wm8750_init(i2c_slave *i2c)
613 {
614     WM8750State *s = FROM_I2C_SLAVE(WM8750State, i2c);
615 
616     AUD_register_card(CODEC, &s->card);
617     wm8750_reset(&s->i2c);
618 
619     return 0;
620 }
621 
622 #if 0
623 static void wm8750_fini(i2c_slave *i2c)
624 {
625     WM8750State *s = (WM8750State *) i2c;
626     wm8750_reset(&s->i2c);
627     AUD_remove_card(&s->card);
628     qemu_free(s);
629 }
630 #endif
631 
wm8750_data_req_set(DeviceState * dev,void (* data_req)(void *,int,int),void * opaque)632 void wm8750_data_req_set(DeviceState *dev,
633                 void (*data_req)(void *, int, int), void *opaque)
634 {
635     WM8750State *s = FROM_I2C_SLAVE(WM8750State, I2C_SLAVE_FROM_QDEV(dev));
636     s->data_req = data_req;
637     s->opaque = opaque;
638 }
639 
wm8750_dac_dat(void * opaque,uint32_t sample)640 void wm8750_dac_dat(void *opaque, uint32_t sample)
641 {
642     WM8750State *s = (WM8750State *) opaque;
643 
644     *(uint32_t *) &s->data_out[s->idx_out] = sample;
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 
wm8750_dac_buffer(void * opaque,int samples)651 void *wm8750_dac_buffer(void *opaque, int samples)
652 {
653     WM8750State *s = (WM8750State *) opaque;
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 
wm8750_dac_commit(void * opaque)662 void wm8750_dac_commit(void *opaque)
663 {
664     WM8750State *s = (WM8750State *) opaque;
665 
666     wm8750_out_flush(s);
667 }
668 
wm8750_adc_dat(void * opaque)669 uint32_t wm8750_adc_dat(void *opaque)
670 {
671     WM8750State *s = (WM8750State *) opaque;
672     uint32_t *data;
673 
674     if (s->idx_in >= sizeof(s->data_in))
675         wm8750_in_load(s);
676 
677     data = (uint32_t *) &s->data_in[s->idx_in];
678     s->req_in -= 4;
679     s->idx_in += 4;
680     return *data;
681 }
682 
wm8750_set_bclk_in(void * opaque,int new_hz)683 void wm8750_set_bclk_in(void *opaque, int new_hz)
684 {
685     WM8750State *s = (WM8750State *) opaque;
686 
687     s->ext_adc_hz = new_hz;
688     s->ext_dac_hz = new_hz;
689     wm8750_clk_update(s, 1);
690 }
691 
692 static I2CSlaveInfo wm8750_info = {
693     .qdev.name = "wm8750",
694     .qdev.size = sizeof(WM8750State),
695     .qdev.vmsd = &vmstate_wm8750,
696     .init = wm8750_init,
697     .event = wm8750_event,
698     .recv = wm8750_rx,
699     .send = wm8750_tx
700 };
701 
wm8750_register_devices(void)702 static void wm8750_register_devices(void)
703 {
704     i2c_register_slave(&wm8750_info);
705 }
706 
707 device_init(wm8750_register_devices)
708