4 * Copyright (c) 2006 Openedhand Ltd.
7 * This file is licensed under GNU GPL.
15 #define CODEC "wm8750"
23 SWVoiceIn *adc_voice[IN_PORT_N];
24 SWVoiceOut *dac_voice[OUT_PORT_N];
26 void (*data_req)(void *, int, int);
28 uint8_t data_in[4096];
29 uint8_t data_out[4096];
34 uint8_t outvol[7], outmute[2];
36 uint8_t invol[4], inmute[2];
38 uint8_t diff[2], pol, ds, monomix[2], alc, mute;
39 uint8_t path[4], mpath[2], power, format;
40 uint32_t inmask, outmask;
41 const struct wm_rate_s *rate;
44 static inline void wm8750_in_load(struct wm8750_s *s)
47 if (s->idx_in + s->req_in <= sizeof(s->data_in))
49 s->idx_in = audio_MAX(0, (int) sizeof(s->data_in) - s->req_in);
50 acquired = AUD_read(*s->in[0], s->data_in + s->idx_in,
51 sizeof(s->data_in) - s->idx_in);
54 static inline void wm8750_out_flush(struct wm8750_s *s)
59 sent = AUD_write(*s->out[0], s->data_out, s->idx_out);
63 static void wm8750_audio_in_cb(void *opaque, int avail_b)
65 struct wm8750_s *s = (struct wm8750_s *) opaque;
67 s->data_req(s->opaque, s->req_out >> 2, avail_b >> 2);
74 static void wm8750_audio_out_cb(void *opaque, int free_b)
76 struct wm8750_s *s = (struct wm8750_s *) opaque;
80 s->data_req(s->opaque, free_b >> 2, s->req_in >> 2);
90 static const struct wm_rate_s wm_rate_table[] = {
91 { 256, 48000, 256, 48000 }, /* SR: 00000 */
92 { 384, 48000, 384, 48000 }, /* SR: 00001 */
93 { 256, 48000, 1536, 8000 }, /* SR: 00010 */
94 { 384, 48000, 2304, 8000 }, /* SR: 00011 */
95 { 1536, 8000, 256, 48000 }, /* SR: 00100 */
96 { 2304, 8000, 384, 48000 }, /* SR: 00101 */
97 { 1536, 8000, 1536, 8000 }, /* SR: 00110 */
98 { 2304, 8000, 2304, 8000 }, /* SR: 00111 */
99 { 1024, 12000, 1024, 12000 }, /* SR: 01000 */
100 { 1526, 12000, 1536, 12000 }, /* SR: 01001 */
101 { 768, 16000, 768, 16000 }, /* SR: 01010 */
102 { 1152, 16000, 1152, 16000 }, /* SR: 01011 */
103 { 384, 32000, 384, 32000 }, /* SR: 01100 */
104 { 576, 32000, 576, 32000 }, /* SR: 01101 */
105 { 128, 96000, 128, 96000 }, /* SR: 01110 */
106 { 192, 96000, 192, 96000 }, /* SR: 01111 */
107 { 256, 44100, 256, 44100 }, /* SR: 10000 */
108 { 384, 44100, 384, 44100 }, /* SR: 10001 */
109 { 256, 44100, 1408, 8018 }, /* SR: 10010 */
110 { 384, 44100, 2112, 8018 }, /* SR: 10011 */
111 { 1408, 8018, 256, 44100 }, /* SR: 10100 */
112 { 2112, 8018, 384, 44100 }, /* SR: 10101 */
113 { 1408, 8018, 1408, 8018 }, /* SR: 10110 */
114 { 2112, 8018, 2112, 8018 }, /* SR: 10111 */
115 { 1024, 11025, 1024, 11025 }, /* SR: 11000 */
116 { 1536, 11025, 1536, 11025 }, /* SR: 11001 */
117 { 512, 22050, 512, 22050 }, /* SR: 11010 */
118 { 768, 22050, 768, 22050 }, /* SR: 11011 */
119 { 512, 24000, 512, 24000 }, /* SR: 11100 */
120 { 768, 24000, 768, 24000 }, /* SR: 11101 */
121 { 128, 88200, 128, 88200 }, /* SR: 11110 */
122 { 192, 88200, 128, 88200 }, /* SR: 11111 */
125 void wm8750_set_format(struct wm8750_s *s)
128 audsettings_t in_fmt;
129 audsettings_t out_fmt;
130 audsettings_t monoout_fmt;
134 if (s->in[0] && *s->in[0])
135 AUD_set_active_in(*s->in[0], 0);
136 if (s->out[0] && *s->out[0])
137 AUD_set_active_out(*s->out[0], 0);
139 for (i = 0; i < IN_PORT_N; i ++)
140 if (s->adc_voice[i]) {
141 AUD_close_in(&s->card, s->adc_voice[i]);
144 for (i = 0; i < OUT_PORT_N; i ++)
145 if (s->dac_voice[i]) {
146 AUD_close_out(&s->card, s->dac_voice[i]);
154 in_fmt.endianness = 0;
155 in_fmt.nchannels = 2;
156 in_fmt.freq = s->rate->adc_hz;
157 in_fmt.fmt = AUD_FMT_S16;
159 s->adc_voice[0] = AUD_open_in(&s->card, s->adc_voice[0],
160 CODEC ".input1", s, wm8750_audio_in_cb, &in_fmt);
161 s->adc_voice[1] = AUD_open_in(&s->card, s->adc_voice[1],
162 CODEC ".input2", s, wm8750_audio_in_cb, &in_fmt);
163 s->adc_voice[2] = AUD_open_in(&s->card, s->adc_voice[2],
164 CODEC ".input3", s, wm8750_audio_in_cb, &in_fmt);
167 out_fmt.endianness = 0;
168 out_fmt.nchannels = 2;
169 out_fmt.freq = s->rate->dac_hz;
170 out_fmt.fmt = AUD_FMT_S16;
171 monoout_fmt.endianness = 0;
172 monoout_fmt.nchannels = 1;
173 monoout_fmt.freq = s->rate->dac_hz;
174 monoout_fmt.fmt = AUD_FMT_S16;
176 s->dac_voice[0] = AUD_open_out(&s->card, s->dac_voice[0],
177 CODEC ".speaker", s, wm8750_audio_out_cb, &out_fmt);
178 s->dac_voice[1] = AUD_open_out(&s->card, s->dac_voice[1],
179 CODEC ".headphone", s, wm8750_audio_out_cb, &out_fmt);
180 /* MONOMIX is also in stereo for simplicity */
181 s->dac_voice[2] = AUD_open_out(&s->card, s->dac_voice[2],
182 CODEC ".monomix", s, wm8750_audio_out_cb, &out_fmt);
183 /* no sense emulating OUT3 which is a mix of other outputs */
185 /* We should connect the left and right channels to their
186 * respective inputs/outputs but we have completely no need
187 * for mixing or combining paths to different ports, so we
188 * connect both channels to where the left channel is routed. */
189 if (s->in[0] && *s->in[0])
190 AUD_set_active_in(*s->in[0], 1);
191 if (s->out[0] && *s->out[0])
192 AUD_set_active_out(*s->out[0], 1);
195 void inline wm8750_mask_update(struct wm8750_s *s)
197 #define R_ONLY 0x0000ffff
198 #define L_ONLY 0xffff0000
199 #define BOTH (R_ONLY | L_ONLY)
200 #define NONE (R_ONLY & L_ONLY)
202 (s->inmute[0] ? R_ONLY : BOTH) &
203 (s->inmute[1] ? L_ONLY : BOTH) &
204 (s->mute ? NONE : BOTH);
206 (s->outmute[0] ? R_ONLY : BOTH) &
207 (s->outmute[1] ? L_ONLY : BOTH) &
208 (s->mute ? NONE : BOTH);
211 void wm8750_reset(i2c_slave *i2c)
213 struct wm8750_s *s = (struct wm8750_s *) i2c;
215 wm8750_set_format(s);
220 s->in[0] = &s->adc_voice[0];
225 s->out[0] = &s->dac_voice[0];
244 s->idx_in = sizeof(s->data_in);
248 wm8750_mask_update(s);
252 static void wm8750_event(i2c_slave *i2c, enum i2c_event event)
254 struct wm8750_s *s = (struct wm8750_s *) i2c;
263 printf("%s: message too short (%i bytes)\n",
264 __FUNCTION__, s->i2c_len);
272 #define WM8750_LINVOL 0x00
273 #define WM8750_RINVOL 0x01
274 #define WM8750_LOUT1V 0x02
275 #define WM8750_ROUT1V 0x03
276 #define WM8750_ADCDAC 0x05
277 #define WM8750_IFACE 0x07
278 #define WM8750_SRATE 0x08
279 #define WM8750_LDAC 0x0a
280 #define WM8750_RDAC 0x0b
281 #define WM8750_BASS 0x0c
282 #define WM8750_TREBLE 0x0d
283 #define WM8750_RESET 0x0f
284 #define WM8750_3D 0x10
285 #define WM8750_ALC1 0x11
286 #define WM8750_ALC2 0x12
287 #define WM8750_ALC3 0x13
288 #define WM8750_NGATE 0x14
289 #define WM8750_LADC 0x15
290 #define WM8750_RADC 0x16
291 #define WM8750_ADCTL1 0x17
292 #define WM8750_ADCTL2 0x18
293 #define WM8750_PWR1 0x19
294 #define WM8750_PWR2 0x1a
295 #define WM8750_ADCTL3 0x1b
296 #define WM8750_ADCIN 0x1f
297 #define WM8750_LADCIN 0x20
298 #define WM8750_RADCIN 0x21
299 #define WM8750_LOUTM1 0x22
300 #define WM8750_LOUTM2 0x23
301 #define WM8750_ROUTM1 0x24
302 #define WM8750_ROUTM2 0x25
303 #define WM8750_MOUTM1 0x26
304 #define WM8750_MOUTM2 0x27
305 #define WM8750_LOUT2V 0x28
306 #define WM8750_ROUT2V 0x29
307 #define WM8750_MOUTV 0x2a
309 static int wm8750_tx(i2c_slave *i2c, uint8_t data)
311 struct wm8750_s *s = (struct wm8750_s *) i2c;
315 if (s->i2c_len >= 2) {
316 printf("%s: long message (%i bytes)\n", __FUNCTION__, s->i2c_len);
321 s->i2c_data[s->i2c_len ++] = data;
325 cmd = s->i2c_data[0] >> 1;
326 value = ((s->i2c_data[0] << 8) | s->i2c_data[1]) & 0x1ff;
329 case WM8750_LADCIN: /* ADC Signal Path Control (Left) */
330 s->diff[0] = (((value >> 6) & 3) == 3); /* LINSEL */
332 s->in[0] = &s->adc_voice[0 + s->ds * 1];
334 s->in[0] = &s->adc_voice[((value >> 6) & 3) * 1 + 0];
337 case WM8750_RADCIN: /* ADC Signal Path Control (Right) */
338 s->diff[1] = (((value >> 6) & 3) == 3); /* RINSEL */
340 s->in[1] = &s->adc_voice[0 + s->ds * 1];
342 s->in[1] = &s->adc_voice[((value >> 6) & 3) * 1 + 0];
345 case WM8750_ADCIN: /* ADC Input Mode */
346 s->ds = (value >> 8) & 1; /* DS */
348 s->in[0] = &s->adc_voice[0 + s->ds * 1];
350 s->in[1] = &s->adc_voice[0 + s->ds * 1];
351 s->monomix[0] = (value >> 6) & 3; /* MONOMIX */
354 case WM8750_ADCTL1: /* Additional Control (1) */
355 s->monomix[1] = (value >> 1) & 1; /* DMONOMIX */
358 case WM8750_PWR1: /* Power Management (1) */
359 s->enable = ((value >> 6) & 7) == 3; /* VMIDSEL, VREF */
360 wm8750_set_format(s);
363 case WM8750_LINVOL: /* Left Channel PGA */
364 s->invol[0] = value & 0x3f; /* LINVOL */
365 s->inmute[0] = (value >> 7) & 1; /* LINMUTE */
366 wm8750_mask_update(s);
369 case WM8750_RINVOL: /* Right Channel PGA */
370 s->invol[1] = value & 0x3f; /* RINVOL */
371 s->inmute[1] = (value >> 7) & 1; /* RINMUTE */
372 wm8750_mask_update(s);
375 case WM8750_ADCDAC: /* ADC and DAC Control */
376 s->pol = (value >> 5) & 3; /* ADCPOL */
377 s->mute = (value >> 3) & 1; /* DACMU */
378 wm8750_mask_update(s);
381 case WM8750_ADCTL3: /* Additional Control (3) */
384 case WM8750_LADC: /* Left ADC Digital Volume */
385 s->invol[2] = value & 0xff; /* LADCVOL */
388 case WM8750_RADC: /* Right ADC Digital Volume */
389 s->invol[3] = value & 0xff; /* RADCVOL */
392 case WM8750_ALC1: /* ALC Control (1) */
393 s->alc = (value >> 7) & 3; /* ALCSEL */
396 case WM8750_NGATE: /* Noise Gate Control */
397 case WM8750_3D: /* 3D enhance */
400 case WM8750_LDAC: /* Left Channel Digital Volume */
401 s->outvol[0] = value & 0xff; /* LDACVOL */
404 case WM8750_RDAC: /* Right Channel Digital Volume */
405 s->outvol[1] = value & 0xff; /* RDACVOL */
408 case WM8750_BASS: /* Bass Control */
411 case WM8750_LOUTM1: /* Left Mixer Control (1) */
412 s->path[0] = (value >> 8) & 1; /* LD2LO */
415 case WM8750_LOUTM2: /* Left Mixer Control (2) */
416 s->path[1] = (value >> 8) & 1; /* RD2LO */
419 case WM8750_ROUTM1: /* Right Mixer Control (1) */
420 s->path[2] = (value >> 8) & 1; /* LD2RO */
423 case WM8750_ROUTM2: /* Right Mixer Control (2) */
424 s->path[3] = (value >> 8) & 1; /* RD2RO */
427 case WM8750_MOUTM1: /* Mono Mixer Control (1) */
428 s->mpath[0] = (value >> 8) & 1; /* LD2MO */
431 case WM8750_MOUTM2: /* Mono Mixer Control (2) */
432 s->mpath[1] = (value >> 8) & 1; /* RD2MO */
435 case WM8750_LOUT1V: /* LOUT1 Volume */
436 s->outvol[2] = value & 0x7f; /* LOUT2VOL */
439 case WM8750_LOUT2V: /* LOUT2 Volume */
440 s->outvol[4] = value & 0x7f; /* LOUT2VOL */
443 case WM8750_ROUT1V: /* ROUT1 Volume */
444 s->outvol[3] = value & 0x7f; /* ROUT2VOL */
447 case WM8750_ROUT2V: /* ROUT2 Volume */
448 s->outvol[5] = value & 0x7f; /* ROUT2VOL */
451 case WM8750_MOUTV: /* MONOOUT Volume */
452 s->outvol[6] = value & 0x7f; /* MONOOUTVOL */
455 case WM8750_ADCTL2: /* Additional Control (2) */
458 case WM8750_PWR2: /* Power Management (2) */
459 s->power = value & 0x7e;
462 case WM8750_IFACE: /* Digital Audio Interface Format */
464 if (value & 0x40) /* MS */
465 printf("%s: attempt to enable Master Mode\n", __FUNCTION__);
468 wm8750_set_format(s);
471 case WM8750_SRATE: /* Clocking and Sample Rate Control */
472 s->rate = &wm_rate_table[(value >> 1) & 0x1f];
473 wm8750_set_format(s);
476 case WM8750_RESET: /* Reset */
477 wm8750_reset(&s->i2c);
482 printf("%s: unknown register %02x\n", __FUNCTION__, cmd);
489 static int wm8750_rx(i2c_slave *i2c)
494 i2c_slave *wm8750_init(i2c_bus *bus, AudioState *audio)
496 struct wm8750_s *s = (struct wm8750_s *)
497 i2c_slave_init(bus, 0, sizeof(struct wm8750_s));
498 s->i2c.event = wm8750_event;
499 s->i2c.recv = wm8750_rx;
500 s->i2c.send = wm8750_tx;
502 AUD_register_card(audio, CODEC, &s->card);
503 wm8750_reset(&s->i2c);
508 void wm8750_fini(i2c_slave *i2c)
510 struct wm8750_s *s = (struct wm8750_s *) i2c;
511 wm8750_reset(&s->i2c);
512 AUD_remove_card(&s->card);
516 void wm8750_data_req_set(i2c_slave *i2c,
517 void (*data_req)(void *, int, int), void *opaque)
519 struct wm8750_s *s = (struct wm8750_s *) i2c;
520 s->data_req = data_req;
524 void wm8750_dac_dat(void *opaque, uint32_t sample)
526 struct wm8750_s *s = (struct wm8750_s *) opaque;
527 uint32_t *data = (uint32_t *) &s->data_out[s->idx_out];
528 *data = sample & s->outmask;
531 if (s->idx_out >= sizeof(s->data_out) || s->req_out <= 0)
535 uint32_t wm8750_adc_dat(void *opaque)
537 struct wm8750_s *s = (struct wm8750_s *) opaque;
539 if (s->idx_in >= sizeof(s->data_in))
541 data = (uint32_t *) &s->data_in[s->idx_in];
544 return *data & s->inmask;