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/*
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* WM8750 audio CODEC.
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*
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* Copyright (c) 2006 Openedhand Ltd.
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* Written by Andrzej Zaborowski <balrog@zabor.org>
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*
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* This file is licensed under GNU GPL.
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*/
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#include "hw.h" |
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#include "i2c.h" |
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#include "audio/audio.h" |
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|
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#define IN_PORT_N 3 |
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#define OUT_PORT_N 3 |
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#define CODEC "wm8750" |
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|
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struct wm_rate_s;
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struct wm8750_s {
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i2c_slave i2c; |
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uint8_t i2c_data[2];
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int i2c_len;
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QEMUSoundCard card; |
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SWVoiceIn *adc_voice[IN_PORT_N]; |
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SWVoiceOut *dac_voice[OUT_PORT_N]; |
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int enable;
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void (*data_req)(void *, int, int); |
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void *opaque;
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uint8_t data_in[4096];
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uint8_t data_out[4096];
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int idx_in, req_in;
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int idx_out, req_out;
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SWVoiceOut **out[2];
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uint8_t outvol[7], outmute[2]; |
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SWVoiceIn **in[2];
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uint8_t invol[4], inmute[2]; |
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uint8_t diff[2], pol, ds, monomix[2], alc, mute; |
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uint8_t path[4], mpath[2], power, format; |
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uint32_t inmask, outmask; |
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const struct wm_rate_s *rate; |
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}; |
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static inline void wm8750_in_load(struct wm8750_s *s) |
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{ |
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int acquired;
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if (s->idx_in + s->req_in <= sizeof(s->data_in)) |
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return;
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s->idx_in = audio_MAX(0, (int) sizeof(s->data_in) - s->req_in); |
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acquired = AUD_read(*s->in[0], s->data_in + s->idx_in,
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sizeof(s->data_in) - s->idx_in);
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} |
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static inline void wm8750_out_flush(struct wm8750_s *s) |
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{ |
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int sent = 0; |
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while (sent < s->idx_out)
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sent += AUD_write(*s->out[0], s->data_out + sent, s->idx_out - sent)
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?: s->idx_out; |
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s->idx_out = 0;
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} |
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static void wm8750_audio_in_cb(void *opaque, int avail_b) |
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{ |
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struct wm8750_s *s = (struct wm8750_s *) opaque; |
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s->req_in = avail_b; |
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s->data_req(s->opaque, s->req_out >> 2, avail_b >> 2); |
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} |
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static void wm8750_audio_out_cb(void *opaque, int free_b) |
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{ |
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struct wm8750_s *s = (struct wm8750_s *) opaque; |
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if (s->idx_out >= free_b) {
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s->idx_out = free_b; |
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s->req_out = 0;
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wm8750_out_flush(s); |
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} else
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s->req_out = free_b - s->idx_out; |
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s->data_req(s->opaque, s->req_out >> 2, s->req_in >> 2); |
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} |
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struct wm_rate_s {
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int adc;
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int adc_hz;
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int dac;
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int dac_hz;
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}; |
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static const struct wm_rate_s wm_rate_table[] = { |
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{ 256, 48000, 256, 48000 }, /* SR: 00000 */ |
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{ 384, 48000, 384, 48000 }, /* SR: 00001 */ |
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{ 256, 48000, 1536, 8000 }, /* SR: 00010 */ |
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{ 384, 48000, 2304, 8000 }, /* SR: 00011 */ |
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{ 1536, 8000, 256, 48000 }, /* SR: 00100 */ |
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{ 2304, 8000, 384, 48000 }, /* SR: 00101 */ |
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{ 1536, 8000, 1536, 8000 }, /* SR: 00110 */ |
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{ 2304, 8000, 2304, 8000 }, /* SR: 00111 */ |
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{ 1024, 12000, 1024, 12000 }, /* SR: 01000 */ |
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{ 1526, 12000, 1536, 12000 }, /* SR: 01001 */ |
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{ 768, 16000, 768, 16000 }, /* SR: 01010 */ |
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{ 1152, 16000, 1152, 16000 }, /* SR: 01011 */ |
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{ 384, 32000, 384, 32000 }, /* SR: 01100 */ |
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{ 576, 32000, 576, 32000 }, /* SR: 01101 */ |
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{ 128, 96000, 128, 96000 }, /* SR: 01110 */ |
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{ 192, 96000, 192, 96000 }, /* SR: 01111 */ |
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{ 256, 44100, 256, 44100 }, /* SR: 10000 */ |
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{ 384, 44100, 384, 44100 }, /* SR: 10001 */ |
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{ 256, 44100, 1408, 8018 }, /* SR: 10010 */ |
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{ 384, 44100, 2112, 8018 }, /* SR: 10011 */ |
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{ 1408, 8018, 256, 44100 }, /* SR: 10100 */ |
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{ 2112, 8018, 384, 44100 }, /* SR: 10101 */ |
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{ 1408, 8018, 1408, 8018 }, /* SR: 10110 */ |
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{ 2112, 8018, 2112, 8018 }, /* SR: 10111 */ |
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{ 1024, 11025, 1024, 11025 }, /* SR: 11000 */ |
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{ 1536, 11025, 1536, 11025 }, /* SR: 11001 */ |
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{ 512, 22050, 512, 22050 }, /* SR: 11010 */ |
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{ 768, 22050, 768, 22050 }, /* SR: 11011 */ |
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{ 512, 24000, 512, 24000 }, /* SR: 11100 */ |
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{ 768, 24000, 768, 24000 }, /* SR: 11101 */ |
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{ 128, 88200, 128, 88200 }, /* SR: 11110 */ |
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{ 192, 88200, 192, 88200 }, /* SR: 11111 */ |
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}; |
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static void wm8750_set_format(struct wm8750_s *s) |
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{ |
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int i;
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audsettings_t in_fmt; |
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audsettings_t out_fmt; |
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audsettings_t monoout_fmt; |
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wm8750_out_flush(s); |
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if (s->in[0] && *s->in[0]) |
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AUD_set_active_in(*s->in[0], 0); |
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if (s->out[0] && *s->out[0]) |
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AUD_set_active_out(*s->out[0], 0); |
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for (i = 0; i < IN_PORT_N; i ++) |
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if (s->adc_voice[i]) {
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AUD_close_in(&s->card, s->adc_voice[i]); |
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s->adc_voice[i] = 0;
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} |
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for (i = 0; i < OUT_PORT_N; i ++) |
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if (s->dac_voice[i]) {
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AUD_close_out(&s->card, s->dac_voice[i]); |
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s->dac_voice[i] = 0;
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} |
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if (!s->enable)
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return;
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/* Setup input */
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in_fmt.endianness = 0;
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in_fmt.nchannels = 2;
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in_fmt.freq = s->rate->adc_hz; |
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in_fmt.fmt = AUD_FMT_S16; |
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s->adc_voice[0] = AUD_open_in(&s->card, s->adc_voice[0], |
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CODEC ".input1", s, wm8750_audio_in_cb, &in_fmt);
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s->adc_voice[1] = AUD_open_in(&s->card, s->adc_voice[1], |
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CODEC ".input2", s, wm8750_audio_in_cb, &in_fmt);
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s->adc_voice[2] = AUD_open_in(&s->card, s->adc_voice[2], |
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CODEC ".input3", s, wm8750_audio_in_cb, &in_fmt);
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/* Setup output */
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out_fmt.endianness = 0;
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out_fmt.nchannels = 2;
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out_fmt.freq = s->rate->dac_hz; |
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out_fmt.fmt = AUD_FMT_S16; |
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monoout_fmt.endianness = 0;
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monoout_fmt.nchannels = 1;
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monoout_fmt.freq = s->rate->dac_hz; |
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monoout_fmt.fmt = AUD_FMT_S16; |
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s->dac_voice[0] = AUD_open_out(&s->card, s->dac_voice[0], |
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CODEC ".speaker", s, wm8750_audio_out_cb, &out_fmt);
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s->dac_voice[1] = AUD_open_out(&s->card, s->dac_voice[1], |
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CODEC ".headphone", s, wm8750_audio_out_cb, &out_fmt);
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/* MONOMIX is also in stereo for simplicity */
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s->dac_voice[2] = AUD_open_out(&s->card, s->dac_voice[2], |
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CODEC ".monomix", s, wm8750_audio_out_cb, &out_fmt);
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/* no sense emulating OUT3 which is a mix of other outputs */
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/* We should connect the left and right channels to their
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* respective inputs/outputs but we have completely no need
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* for mixing or combining paths to different ports, so we
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* connect both channels to where the left channel is routed. */
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if (s->in[0] && *s->in[0]) |
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AUD_set_active_in(*s->in[0], 1); |
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if (s->out[0] && *s->out[0]) |
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AUD_set_active_out(*s->out[0], 1); |
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} |
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static void inline wm8750_mask_update(struct wm8750_s *s) |
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{ |
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#define R_ONLY 0x0000ffff |
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#define L_ONLY 0xffff0000 |
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#define BOTH (R_ONLY | L_ONLY)
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#define NONE (R_ONLY & L_ONLY)
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s->inmask = |
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(s->inmute[0] ? R_ONLY : BOTH) &
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(s->inmute[1] ? L_ONLY : BOTH) &
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(s->mute ? NONE : BOTH); |
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s->outmask = |
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(s->outmute[0] ? R_ONLY : BOTH) &
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(s->outmute[1] ? L_ONLY : BOTH) &
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(s->mute ? NONE : BOTH); |
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} |
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void wm8750_reset(i2c_slave *i2c)
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{ |
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struct wm8750_s *s = (struct wm8750_s *) i2c; |
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s->rate = &wm_rate_table[0];
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s->enable = 0;
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wm8750_set_format(s); |
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s->diff[0] = 0; |
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s->diff[1] = 0; |
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s->ds = 0;
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s->alc = 0;
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s->in[0] = &s->adc_voice[0]; |
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s->invol[0] = 0x17; |
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s->invol[1] = 0x17; |
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s->invol[2] = 0xc3; |
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s->invol[3] = 0xc3; |
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s->out[0] = &s->dac_voice[0]; |
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s->outvol[0] = 0xff; |
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s->outvol[1] = 0xff; |
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s->outvol[2] = 0x79; |
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s->outvol[3] = 0x79; |
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s->outvol[4] = 0x79; |
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s->outvol[5] = 0x79; |
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s->inmute[0] = 0; |
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s->inmute[1] = 0; |
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s->outmute[0] = 0; |
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s->outmute[1] = 0; |
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s->mute = 1;
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s->path[0] = 0; |
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s->path[1] = 0; |
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s->path[2] = 0; |
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s->path[3] = 0; |
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s->mpath[0] = 0; |
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s->mpath[1] = 0; |
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s->format = 0x0a;
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s->idx_in = sizeof(s->data_in);
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s->req_in = 0;
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s->idx_out = 0;
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s->req_out = 0;
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wm8750_mask_update(s); |
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s->i2c_len = 0;
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} |
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|
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static void wm8750_event(i2c_slave *i2c, enum i2c_event event) |
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{ |
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struct wm8750_s *s = (struct wm8750_s *) i2c; |
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switch (event) {
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case I2C_START_SEND:
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s->i2c_len = 0;
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break;
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case I2C_FINISH:
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#ifdef VERBOSE
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if (s->i2c_len < 2) |
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printf("%s: message too short (%i bytes)\n",
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__FUNCTION__, s->i2c_len); |
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#endif
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break;
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default:
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break;
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} |
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} |
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|
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#define WM8750_LINVOL 0x00 |
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#define WM8750_RINVOL 0x01 |
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#define WM8750_LOUT1V 0x02 |
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#define WM8750_ROUT1V 0x03 |
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#define WM8750_ADCDAC 0x05 |
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#define WM8750_IFACE 0x07 |
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#define WM8750_SRATE 0x08 |
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#define WM8750_LDAC 0x0a |
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#define WM8750_RDAC 0x0b |
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#define WM8750_BASS 0x0c |
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#define WM8750_TREBLE 0x0d |
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#define WM8750_RESET 0x0f |
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#define WM8750_3D 0x10 |
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#define WM8750_ALC1 0x11 |
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#define WM8750_ALC2 0x12 |
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#define WM8750_ALC3 0x13 |
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#define WM8750_NGATE 0x14 |
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#define WM8750_LADC 0x15 |
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#define WM8750_RADC 0x16 |
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#define WM8750_ADCTL1 0x17 |
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#define WM8750_ADCTL2 0x18 |
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#define WM8750_PWR1 0x19 |
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#define WM8750_PWR2 0x1a |
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#define WM8750_ADCTL3 0x1b |
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#define WM8750_ADCIN 0x1f |
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#define WM8750_LADCIN 0x20 |
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#define WM8750_RADCIN 0x21 |
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#define WM8750_LOUTM1 0x22 |
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#define WM8750_LOUTM2 0x23 |
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#define WM8750_ROUTM1 0x24 |
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#define WM8750_ROUTM2 0x25 |
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#define WM8750_MOUTM1 0x26 |
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#define WM8750_MOUTM2 0x27 |
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#define WM8750_LOUT2V 0x28 |
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#define WM8750_ROUT2V 0x29 |
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#define WM8750_MOUTV 0x2a |
312 |
|
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static int wm8750_tx(i2c_slave *i2c, uint8_t data) |
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{ |
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struct wm8750_s *s = (struct wm8750_s *) i2c; |
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uint8_t cmd; |
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uint16_t value; |
318 |
|
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if (s->i2c_len >= 2) { |
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printf("%s: long message (%i bytes)\n", __FUNCTION__, s->i2c_len);
|
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#ifdef VERBOSE
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return 1; |
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#endif
|
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} |
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s->i2c_data[s->i2c_len ++] = data; |
326 |
if (s->i2c_len != 2) |
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return 0; |
328 |
|
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cmd = s->i2c_data[0] >> 1; |
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value = ((s->i2c_data[0] << 8) | s->i2c_data[1]) & 0x1ff; |
331 |
|
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switch (cmd) {
|
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case WM8750_LADCIN: /* ADC Signal Path Control (Left) */ |
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s->diff[0] = (((value >> 6) & 3) == 3); /* LINSEL */ |
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if (s->diff[0]) |
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s->in[0] = &s->adc_voice[0 + s->ds * 1]; |
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else
|
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s->in[0] = &s->adc_voice[((value >> 6) & 3) * 1 + 0]; |
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break;
|
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|
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case WM8750_RADCIN: /* ADC Signal Path Control (Right) */ |
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s->diff[1] = (((value >> 6) & 3) == 3); /* RINSEL */ |
343 |
if (s->diff[1]) |
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s->in[1] = &s->adc_voice[0 + s->ds * 1]; |
345 |
else
|
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s->in[1] = &s->adc_voice[((value >> 6) & 3) * 1 + 0]; |
347 |
break;
|
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|
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case WM8750_ADCIN: /* ADC Input Mode */ |
350 |
s->ds = (value >> 8) & 1; /* DS */ |
351 |
if (s->diff[0]) |
352 |
s->in[0] = &s->adc_voice[0 + s->ds * 1]; |
353 |
if (s->diff[1]) |
354 |
s->in[1] = &s->adc_voice[0 + s->ds * 1]; |
355 |
s->monomix[0] = (value >> 6) & 3; /* MONOMIX */ |
356 |
break;
|
357 |
|
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case WM8750_ADCTL1: /* Additional Control (1) */ |
359 |
s->monomix[1] = (value >> 1) & 1; /* DMONOMIX */ |
360 |
break;
|
361 |
|
362 |
case WM8750_PWR1: /* Power Management (1) */ |
363 |
s->enable = ((value >> 6) & 7) == 3; /* VMIDSEL, VREF */ |
364 |
wm8750_set_format(s); |
365 |
break;
|
366 |
|
367 |
case WM8750_LINVOL: /* Left Channel PGA */ |
368 |
s->invol[0] = value & 0x3f; /* LINVOL */ |
369 |
s->inmute[0] = (value >> 7) & 1; /* LINMUTE */ |
370 |
wm8750_mask_update(s); |
371 |
break;
|
372 |
|
373 |
case WM8750_RINVOL: /* Right Channel PGA */ |
374 |
s->invol[1] = value & 0x3f; /* RINVOL */ |
375 |
s->inmute[1] = (value >> 7) & 1; /* RINMUTE */ |
376 |
wm8750_mask_update(s); |
377 |
break;
|
378 |
|
379 |
case WM8750_ADCDAC: /* ADC and DAC Control */ |
380 |
s->pol = (value >> 5) & 3; /* ADCPOL */ |
381 |
s->mute = (value >> 3) & 1; /* DACMU */ |
382 |
wm8750_mask_update(s); |
383 |
break;
|
384 |
|
385 |
case WM8750_ADCTL3: /* Additional Control (3) */ |
386 |
break;
|
387 |
|
388 |
case WM8750_LADC: /* Left ADC Digital Volume */ |
389 |
s->invol[2] = value & 0xff; /* LADCVOL */ |
390 |
break;
|
391 |
|
392 |
case WM8750_RADC: /* Right ADC Digital Volume */ |
393 |
s->invol[3] = value & 0xff; /* RADCVOL */ |
394 |
break;
|
395 |
|
396 |
case WM8750_ALC1: /* ALC Control (1) */ |
397 |
s->alc = (value >> 7) & 3; /* ALCSEL */ |
398 |
break;
|
399 |
|
400 |
case WM8750_NGATE: /* Noise Gate Control */ |
401 |
case WM8750_3D: /* 3D enhance */ |
402 |
break;
|
403 |
|
404 |
case WM8750_LDAC: /* Left Channel Digital Volume */ |
405 |
s->outvol[0] = value & 0xff; /* LDACVOL */ |
406 |
break;
|
407 |
|
408 |
case WM8750_RDAC: /* Right Channel Digital Volume */ |
409 |
s->outvol[1] = value & 0xff; /* RDACVOL */ |
410 |
break;
|
411 |
|
412 |
case WM8750_BASS: /* Bass Control */ |
413 |
break;
|
414 |
|
415 |
case WM8750_LOUTM1: /* Left Mixer Control (1) */ |
416 |
s->path[0] = (value >> 8) & 1; /* LD2LO */ |
417 |
break;
|
418 |
|
419 |
case WM8750_LOUTM2: /* Left Mixer Control (2) */ |
420 |
s->path[1] = (value >> 8) & 1; /* RD2LO */ |
421 |
break;
|
422 |
|
423 |
case WM8750_ROUTM1: /* Right Mixer Control (1) */ |
424 |
s->path[2] = (value >> 8) & 1; /* LD2RO */ |
425 |
break;
|
426 |
|
427 |
case WM8750_ROUTM2: /* Right Mixer Control (2) */ |
428 |
s->path[3] = (value >> 8) & 1; /* RD2RO */ |
429 |
break;
|
430 |
|
431 |
case WM8750_MOUTM1: /* Mono Mixer Control (1) */ |
432 |
s->mpath[0] = (value >> 8) & 1; /* LD2MO */ |
433 |
break;
|
434 |
|
435 |
case WM8750_MOUTM2: /* Mono Mixer Control (2) */ |
436 |
s->mpath[1] = (value >> 8) & 1; /* RD2MO */ |
437 |
break;
|
438 |
|
439 |
case WM8750_LOUT1V: /* LOUT1 Volume */ |
440 |
s->outvol[2] = value & 0x7f; /* LOUT2VOL */ |
441 |
break;
|
442 |
|
443 |
case WM8750_LOUT2V: /* LOUT2 Volume */ |
444 |
s->outvol[4] = value & 0x7f; /* LOUT2VOL */ |
445 |
break;
|
446 |
|
447 |
case WM8750_ROUT1V: /* ROUT1 Volume */ |
448 |
s->outvol[3] = value & 0x7f; /* ROUT2VOL */ |
449 |
break;
|
450 |
|
451 |
case WM8750_ROUT2V: /* ROUT2 Volume */ |
452 |
s->outvol[5] = value & 0x7f; /* ROUT2VOL */ |
453 |
break;
|
454 |
|
455 |
case WM8750_MOUTV: /* MONOOUT Volume */ |
456 |
s->outvol[6] = value & 0x7f; /* MONOOUTVOL */ |
457 |
break;
|
458 |
|
459 |
case WM8750_ADCTL2: /* Additional Control (2) */ |
460 |
break;
|
461 |
|
462 |
case WM8750_PWR2: /* Power Management (2) */ |
463 |
s->power = value & 0x7e;
|
464 |
break;
|
465 |
|
466 |
case WM8750_IFACE: /* Digital Audio Interface Format */ |
467 |
#ifdef VERBOSE
|
468 |
if (value & 0x40) /* MS */ |
469 |
printf("%s: attempt to enable Master Mode\n", __FUNCTION__);
|
470 |
#endif
|
471 |
s->format = value; |
472 |
wm8750_set_format(s); |
473 |
break;
|
474 |
|
475 |
case WM8750_SRATE: /* Clocking and Sample Rate Control */ |
476 |
s->rate = &wm_rate_table[(value >> 1) & 0x1f]; |
477 |
wm8750_set_format(s); |
478 |
break;
|
479 |
|
480 |
case WM8750_RESET: /* Reset */ |
481 |
wm8750_reset(&s->i2c); |
482 |
break;
|
483 |
|
484 |
#ifdef VERBOSE
|
485 |
default:
|
486 |
printf("%s: unknown register %02x\n", __FUNCTION__, cmd);
|
487 |
#endif
|
488 |
} |
489 |
|
490 |
return 0; |
491 |
} |
492 |
|
493 |
static int wm8750_rx(i2c_slave *i2c) |
494 |
{ |
495 |
return 0x00; |
496 |
} |
497 |
|
498 |
static void wm8750_save(QEMUFile *f, void *opaque) |
499 |
{ |
500 |
struct wm8750_s *s = (struct wm8750_s *) opaque; |
501 |
int i;
|
502 |
qemu_put_8s(f, &s->i2c_data[0]);
|
503 |
qemu_put_8s(f, &s->i2c_data[1]);
|
504 |
qemu_put_be32(f, s->i2c_len); |
505 |
qemu_put_be32(f, s->enable); |
506 |
qemu_put_be32(f, s->idx_in); |
507 |
qemu_put_be32(f, s->req_in); |
508 |
qemu_put_be32(f, s->idx_out); |
509 |
qemu_put_be32(f, s->req_out); |
510 |
|
511 |
for (i = 0; i < 7; i ++) |
512 |
qemu_put_8s(f, &s->outvol[i]); |
513 |
for (i = 0; i < 2; i ++) |
514 |
qemu_put_8s(f, &s->outmute[i]); |
515 |
for (i = 0; i < 4; i ++) |
516 |
qemu_put_8s(f, &s->invol[i]); |
517 |
for (i = 0; i < 2; i ++) |
518 |
qemu_put_8s(f, &s->inmute[i]); |
519 |
|
520 |
for (i = 0; i < 2; i ++) |
521 |
qemu_put_8s(f, &s->diff[i]); |
522 |
qemu_put_8s(f, &s->pol); |
523 |
qemu_put_8s(f, &s->ds); |
524 |
for (i = 0; i < 2; i ++) |
525 |
qemu_put_8s(f, &s->monomix[i]); |
526 |
qemu_put_8s(f, &s->alc); |
527 |
qemu_put_8s(f, &s->mute); |
528 |
for (i = 0; i < 4; i ++) |
529 |
qemu_put_8s(f, &s->path[i]); |
530 |
for (i = 0; i < 2; i ++) |
531 |
qemu_put_8s(f, &s->mpath[i]); |
532 |
qemu_put_8s(f, &s->format); |
533 |
qemu_put_8s(f, &s->power); |
534 |
qemu_put_be32s(f, &s->inmask); |
535 |
qemu_put_be32s(f, &s->outmask); |
536 |
qemu_put_byte(f, (s->rate - wm_rate_table) / sizeof(*s->rate));
|
537 |
i2c_slave_save(f, &s->i2c); |
538 |
} |
539 |
|
540 |
static int wm8750_load(QEMUFile *f, void *opaque, int version_id) |
541 |
{ |
542 |
struct wm8750_s *s = (struct wm8750_s *) opaque; |
543 |
int i;
|
544 |
qemu_get_8s(f, &s->i2c_data[0]);
|
545 |
qemu_get_8s(f, &s->i2c_data[1]);
|
546 |
s->i2c_len = qemu_get_be32(f); |
547 |
s->enable = qemu_get_be32(f); |
548 |
s->idx_in = qemu_get_be32(f); |
549 |
s->req_in = qemu_get_be32(f); |
550 |
s->idx_out = qemu_get_be32(f); |
551 |
s->req_out = qemu_get_be32(f); |
552 |
|
553 |
for (i = 0; i < 7; i ++) |
554 |
qemu_get_8s(f, &s->outvol[i]); |
555 |
for (i = 0; i < 2; i ++) |
556 |
qemu_get_8s(f, &s->outmute[i]); |
557 |
for (i = 0; i < 4; i ++) |
558 |
qemu_get_8s(f, &s->invol[i]); |
559 |
for (i = 0; i < 2; i ++) |
560 |
qemu_get_8s(f, &s->inmute[i]); |
561 |
|
562 |
for (i = 0; i < 2; i ++) |
563 |
qemu_get_8s(f, &s->diff[i]); |
564 |
qemu_get_8s(f, &s->pol); |
565 |
qemu_get_8s(f, &s->ds); |
566 |
for (i = 0; i < 2; i ++) |
567 |
qemu_get_8s(f, &s->monomix[i]); |
568 |
qemu_get_8s(f, &s->alc); |
569 |
qemu_get_8s(f, &s->mute); |
570 |
for (i = 0; i < 4; i ++) |
571 |
qemu_get_8s(f, &s->path[i]); |
572 |
for (i = 0; i < 2; i ++) |
573 |
qemu_get_8s(f, &s->mpath[i]); |
574 |
qemu_get_8s(f, &s->format); |
575 |
qemu_get_8s(f, &s->power); |
576 |
qemu_get_be32s(f, &s->inmask); |
577 |
qemu_get_be32s(f, &s->outmask); |
578 |
s->rate = &wm_rate_table[(uint8_t) qemu_get_byte(f) & 0x1f];
|
579 |
i2c_slave_load(f, &s->i2c); |
580 |
return 0; |
581 |
} |
582 |
|
583 |
static int wm8750_iid = 0; |
584 |
|
585 |
i2c_slave *wm8750_init(i2c_bus *bus, AudioState *audio) |
586 |
{ |
587 |
struct wm8750_s *s = (struct wm8750_s *) |
588 |
i2c_slave_init(bus, 0, sizeof(struct wm8750_s)); |
589 |
s->i2c.event = wm8750_event; |
590 |
s->i2c.recv = wm8750_rx; |
591 |
s->i2c.send = wm8750_tx; |
592 |
|
593 |
AUD_register_card(audio, CODEC, &s->card); |
594 |
wm8750_reset(&s->i2c); |
595 |
|
596 |
register_savevm(CODEC, wm8750_iid ++, 0, wm8750_save, wm8750_load, s);
|
597 |
|
598 |
return &s->i2c;
|
599 |
} |
600 |
|
601 |
#if 0
|
602 |
static void wm8750_fini(i2c_slave *i2c)
|
603 |
{
|
604 |
struct wm8750_s *s = (struct wm8750_s *) i2c;
|
605 |
wm8750_reset(&s->i2c);
|
606 |
AUD_remove_card(&s->card);
|
607 |
qemu_free(s);
|
608 |
}
|
609 |
#endif
|
610 |
|
611 |
void wm8750_data_req_set(i2c_slave *i2c,
|
612 |
void (*data_req)(void *, int, int), void *opaque) |
613 |
{ |
614 |
struct wm8750_s *s = (struct wm8750_s *) i2c; |
615 |
s->data_req = data_req; |
616 |
s->opaque = opaque; |
617 |
} |
618 |
|
619 |
void wm8750_dac_dat(void *opaque, uint32_t sample) |
620 |
{ |
621 |
struct wm8750_s *s = (struct wm8750_s *) opaque; |
622 |
uint32_t *data = (uint32_t *) &s->data_out[s->idx_out]; |
623 |
*data = sample & s->outmask; |
624 |
s->req_out -= 4;
|
625 |
s->idx_out += 4;
|
626 |
if (s->idx_out >= sizeof(s->data_out) || s->req_out <= 0) |
627 |
wm8750_out_flush(s); |
628 |
} |
629 |
|
630 |
uint32_t wm8750_adc_dat(void *opaque)
|
631 |
{ |
632 |
struct wm8750_s *s = (struct wm8750_s *) opaque; |
633 |
uint32_t *data; |
634 |
if (s->idx_in >= sizeof(s->data_in)) |
635 |
wm8750_in_load(s); |
636 |
data = (uint32_t *) &s->data_in[s->idx_in]; |
637 |
s->req_in -= 4;
|
638 |
s->idx_in += 4;
|
639 |
return *data & s->inmask;
|
640 |
} |