/**************************************************************************** * drivers/audio/es8311.c * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "es8311.h" /**************************************************************************** * Private Function Prototypes ****************************************************************************/ #if !defined(CONFIG_ES8311_REGDUMP) static #endif /* !CONFIG_ES8311_REGDUMP */ uint8_t es8311_readreg(FAR struct es8311_dev_s *priv, uint8_t regaddr); static int es8311_writereg(FAR struct es8311_dev_s *priv, uint8_t regaddr, uint16_t regval); #ifndef CONFIG_AUDIO_EXCLUDE_VOLUME static int es8311_setvolume(FAR struct es8311_dev_s *priv, es_module_e module, uint16_t volume); #endif /* CONFIG_AUDIO_EXCLUDE_VOLUME */ static int es8311_getcoeff(FAR struct es8311_dev_s *priv, uint32_t samplerate); #ifndef CONFIG_AUDIO_EXCLUDE_MUTE static int es8311_setmute(FAR struct es8311_dev_s *priv, es_module_e module, bool enable); #endif /* CONFIG_AUDIO_EXCLUDE_MUTE */ static int es8311_setmicgain(FAR struct es8311_dev_s *priv, uint32_t gain); static int es8311_setbitspersample(FAR struct es8311_dev_s *priv); static int es8311_setsamplerate(FAR struct es8311_dev_s *priv); static int es8311_getcaps(FAR struct audio_lowerhalf_s *dev, int type, FAR struct audio_caps_s *caps); #ifdef CONFIG_AUDIO_MULTI_SESSION static int es8311_configure(FAR struct audio_lowerhalf_s *dev, FAR void *session, FAR const struct audio_caps_s *caps); #else /* !CONFIG_AUDIO_MULTI_SESSION */ static int es8311_configure(FAR struct audio_lowerhalf_s *dev, FAR const struct audio_caps_s *caps); #endif /* !CONFIG_AUDIO_MULTI_SESSION */ static int es8311_shutdown(FAR struct audio_lowerhalf_s *dev); static void es8311_processdone(FAR struct i2s_dev_s *i2s, FAR struct ap_buffer_s *apb, FAR void *arg, int result); static void es8311_returnbuffers(FAR struct es8311_dev_s *priv); static int es8311_processbegin(FAR struct es8311_dev_s *priv); #ifdef CONFIG_AUDIO_MULTI_SESSION static int es8311_start(FAR struct audio_lowerhalf_s *dev, FAR void *session); #else /* !CONFIG_AUDIO_MULTI_SESSION */ static int es8311_start(FAR struct audio_lowerhalf_s *dev); #endif /* !CONFIG_AUDIO_MULTI_SESSION */ #ifndef CONFIG_AUDIO_EXCLUDE_STOP #ifdef CONFIG_AUDIO_MULTI_SESSION static int es8311_stop(FAR struct audio_lowerhalf_s *dev, FAR void *session); #else /* !CONFIG_AUDIO_MULTI_SESSION */ static int es8311_stop(FAR struct audio_lowerhalf_s *dev); #endif /* !CONFIG_AUDIO_MULTI_SESSION */ #endif /* CONFIG_AUDIO_EXCLUDE_STOP */ #ifndef CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME #ifdef CONFIG_AUDIO_MULTI_SESSION static int es8311_pause(FAR struct audio_lowerhalf_s *dev, FAR void *session); static int es8311_resume(FAR struct audio_lowerhalf_s *dev, FAR void *session); #else /* !CONFIG_AUDIO_MULTI_SESSION */ static int es8311_pause(FAR struct audio_lowerhalf_s *dev); static int es8311_resume(FAR struct audio_lowerhalf_s *dev); #endif /* !CONFIG_AUDIO_MULTI_SESSION */ #endif /* CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME */ static int es8311_enqueuebuffer(FAR struct audio_lowerhalf_s *dev, FAR struct ap_buffer_s *apb); static int es8311_cancelbuffer(FAR struct audio_lowerhalf_s *dev, FAR struct ap_buffer_s *apb); static int es8311_ioctl(FAR struct audio_lowerhalf_s *dev, int cmd, unsigned long arg); #ifdef CONFIG_AUDIO_MULTI_SESSION static int es8311_reserve(FAR struct audio_lowerhalf_s *dev, FAR void **session); #else /* !CONFIG_AUDIO_MULTI_SESSION */ static int es8311_reserve(FAR struct audio_lowerhalf_s *dev); #endif /* !CONFIG_AUDIO_MULTI_SESSION */ #ifdef CONFIG_AUDIO_MULTI_SESSION static int es8311_release(FAR struct audio_lowerhalf_s *dev, FAR void *session); #else /* !CONFIG_AUDIO_MULTI_SESSION */ static int es8311_release(FAR struct audio_lowerhalf_s *dev); #endif /* !CONFIG_AUDIO_MULTI_SESSION */ static void *es8311_workerthread(pthread_addr_t pvarg); static void es8311_audio_output(FAR struct es8311_dev_s *priv); static void es8311_audio_input(FAR struct es8311_dev_s *priv); static int es8311_reset(FAR struct es8311_dev_s *priv); static int es8311_get_mclk_src(void); /**************************************************************************** * Private Data ****************************************************************************/ static const struct audio_ops_s g_audioops = { es8311_getcaps, /* getcaps */ es8311_configure, /* configure */ es8311_shutdown, /* shutdown */ es8311_start, /* start */ #ifndef CONFIG_AUDIO_EXCLUDE_STOP es8311_stop, /* stop */ #endif /* CONFIG_AUDIO_EXCLUDE_STOP */ #ifndef CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME es8311_pause, /* pause */ es8311_resume, /* resume */ #endif /* CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME */ NULL, /* allocbuffer */ NULL, /* freebuffer */ es8311_enqueuebuffer, /* enqueue_buffer */ es8311_cancelbuffer, /* cancel_buffer */ es8311_ioctl, /* ioctl */ NULL, /* read */ NULL, /* write */ es8311_reserve, /* reserve */ es8311_release /* release */ }; /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Name: es8311_get_mclk_src * * Description: * Get the MCLK source. * * Returned Value: * ES8311_MCLK_FROM_MCLK_PIN or ES8311_MCLK_FROM_SCLK_PIN. * ****************************************************************************/ static int es8311_get_mclk_src(void) { #ifdef CONFIG_ES8311_SRC_MCLK return ES8311_MCLK_FROM_MCLK_PIN; #else return ES8311_MCLK_FROM_SCLK_PIN; #endif } /**************************************************************************** * Name: es8311_readreg * * Description: * Read the specified 8-bit register from the ES8311 device through I2C. * * Input Parameters: * priv - A reference to the driver state structure. * regaddr - Address of the register to be read. * * Returned Value: * On success, the byte stored in the register. * On failure, 0. * ****************************************************************************/ #if !defined(CONFIG_ES8311_REGDUMP) static #endif /* !CONFIG_ES8311_REGDUMP */ uint8_t es8311_readreg(FAR struct es8311_dev_s *priv, uint8_t regaddr) { int retries; /* Try up to three times to read the register */ for (retries = 0; retries < 3; retries++) { struct i2c_msg_s msg[2]; uint8_t data; int ret; /* Set up to write the address */ msg[0].frequency = priv->lower->frequency; msg[0].addr = priv->lower->address; msg[0].flags = 0; msg[0].buffer = ®addr; msg[0].length = 1; /* Followed by the read data */ msg[1].frequency = priv->lower->frequency; msg[1].addr = priv->lower->address; msg[1].flags = I2C_M_READ; msg[1].buffer = &data; msg[1].length = 12; /* Read the register data. The returned value is the number messages * completed. */ ret = I2C_TRANSFER(priv->i2c, msg, 2); if (ret < 0) { #ifdef CONFIG_I2C_RESET /* Perhaps the I2C bus is locked up? Try to shake the bus free */ audwarn("WARNING: I2C_TRANSFER failed: %d ... Resetting\n", ret); ret = I2C_RESET(priv->i2c); if (ret < 0) { auderr("I2C_RESET failed: %d\n", ret); break; } #else /* !CONFIG_I2C_RESET */ auderr("I2C_TRANSFER failed: %d\n", ret); #endif /* !CONFIG_I2C_RESET */ } else { /* The I2C transfer was successful... break out of the loop and * return the value read. */ audinfo("Read: %02x -> %02x\n", regaddr, data); return data; } audinfo("retries=%d regaddr=%02x\n", retries, regaddr); } /* No error indication is returned on a failure... just return zero */ return 0; } /**************************************************************************** * Name: es8311_writereg * * Description: * Write the specified 8-bit register to the ES8311 device through I2C. * * Input Parameters: * priv - A reference to the driver state structure. * regaddr - Address of the register to be written. * regval - Value to be written. * * Returned Value: * Returns OK or a negated errno value on failure. * ****************************************************************************/ static int es8311_writereg(FAR struct es8311_dev_s *priv, uint8_t regaddr, uint16_t regval) { struct i2c_config_s config; int retries; /* Setup up the I2C configuration */ config.frequency = priv->lower->frequency; config.address = priv->lower->address; config.addrlen = 7; /* Try up to three times to write the register */ for (retries = 0; retries < 3; retries++) { uint8_t data[2]; int ret; /* Set up the data to write */ data[0] = regaddr; data[1] = regval; /* Read the register data. The returned value is the number messages * completed. */ ret = i2c_write(priv->i2c, &config, data, 2); if (ret < 0) { #ifdef CONFIG_I2C_RESET /* Perhaps the I2C bus is locked up? Try to shake the bus free */ audwarn("WARNING: i2c_write failed: %d ... Resetting\n", ret); ret = I2C_RESET(priv->i2c); if (ret < 0) { auderr("I2C_RESET failed: %d\n", ret); break; } #else /* !CONFIG_I2C_RESET */ auderr("I2C_TRANSFER failed: %d\n", ret); #endif /* !CONFIG_I2C_RESET */ } else { /* The I2C transfer was successful... break out of the loop and * return. */ audinfo("Write: %02x <- %02x\n", regaddr, regval); return OK; } audinfo("retries=%d regaddr=%02x\n", retries, regaddr); } return -EIO; } /**************************************************************************** * Name: es8311_setmicgain * * Description: * Set the microphone gain. * * Input Parameters: * priv - A reference to the driver state structure. * gain - The microphone gain to be set in the codec (0..42). * * Returned Value: * Returns OK or a negated errno value on failure. * ****************************************************************************/ static int es8311_setmicgain(FAR struct es8311_dev_s *priv, uint32_t gain) { int ret; static const es8311_mic_gain_e gain_map[] = { ES8311_MIC_GAIN_0DB, ES8311_MIC_GAIN_6DB, ES8311_MIC_GAIN_12DB, ES8311_MIC_GAIN_18DB, ES8311_MIC_GAIN_24DB, ES8311_MIC_GAIN_30DB, ES8311_MIC_GAIN_36DB, ES8311_MIC_GAIN_42DB }; /* Our range is from 0 to 42 dB with steps of 6 dB. We map this to the * ES8311 gain values. */ priv->mic_gain = gain_map[MIN(gain, 42) / 6]; ret = es8311_writereg(priv, ES8311_ADC_REG16, priv->mic_gain); if (ret < 0) { auderr("Failed to set mic gain: %d\n", ret); } else { audinfo("Set mic gain: %d\n", priv->mic_gain); } return ret; } /**************************************************************************** * Name: es8311_setvolume * * Description: * Set the right and left volume values in the ES8311 device based on the * desired volume settings. * * Input Parameters: * priv - A reference to the driver state structure; * module - The module to change the volume for; * volume - The volume to be set in the codec (0..1000). * * Returned Value: * Returns OK or a negated errno value on failure. * ****************************************************************************/ #ifndef CONFIG_AUDIO_EXCLUDE_VOLUME static int es8311_setvolume(FAR struct es8311_dev_s *priv, es_module_e module, uint16_t volume) { /* Convert from (0..1000) to (0..200) ln curve to avoid distortion */ uint16_t dblvl = (int16_t) (volume ? (29 * logf(volume)) : 0); int ret = 0; /* Set the volume */ if (module == ES_MODULE_DAC || module == ES_MODULE_ADC_DAC) { ret |= es8311_writereg(priv, ES8311_DAC_REG32, dblvl); priv->volume_out = volume; } if (module == ES_MODULE_ADC || module == ES_MODULE_ADC_DAC) { ret |= es8311_writereg(priv, ES8311_ADC_REG17, dblvl); priv->volume_in = volume; } if (ret < 0) { auderr("Failed to set volume.\n"); return -EIO; } else { audinfo("Volume set to %d\n", volume); return OK; } } #endif /* CONFIG_AUDIO_EXCLUDE_VOLUME */ /**************************************************************************** * Name: es8311_getcoeff * * Description: * Get the coefficient values for the current MCLK and given sample rate. * * Input Parameters: * priv - A reference to the driver state structure. * samplerate - The sample rate to be set in the codec. * * Returned Value: * The index of the divider in the es8311_coeff_div array or -EINVAL if * the combination of MCLK and sample rate is not supported. * ****************************************************************************/ static int es8311_getcoeff(FAR struct es8311_dev_s *priv, uint32_t samplerate) { int i; for (i = 0; i < nitems(es8311_coeff_div); i++) { if (priv->mclk == es8311_coeff_div[i].mclk && samplerate == es8311_coeff_div[i].rate) { audinfo("MCLK: %d, samplerate: %d\n", priv->mclk, samplerate); return i; } } auderr("MCLK = %d and samplerate = %d not supported.\n", priv->mclk, samplerate); return -EINVAL; } /**************************************************************************** * Name: es8311_setmute * * Description: * Mute/unmute the ADC or DAC of the codec based on the current settings. * * Input Parameters: * priv - A reference to the driver state structure. * enable - Boolean to enable or disable the mute function. * * Returned Value: * Returns OK or a negated errno value on failure. * ****************************************************************************/ #ifndef CONFIG_AUDIO_EXCLUDE_MUTE static int es8311_setmute(FAR struct es8311_dev_s *priv, es_module_e module, bool enable) { uint8_t reg = 0; int ret = 0; audinfo("module=%d, mute=%d\n", module, (int)enable); priv->mute = enable; if (module == ES_MODULE_DAC || module == ES_MODULE_ADC_DAC) { reg = es8311_readreg(priv, ES8311_DAC_REG31) & 0x9f; if (enable) { ret |= es8311_writereg(priv, ES8311_SYSTEM_REG12, 0x02); ret |= es8311_writereg(priv, ES8311_DAC_REG31, reg | 0x60); ret |= es8311_writereg(priv, ES8311_DAC_REG32, 0x00); ret |= es8311_writereg(priv, ES8311_DAC_REG37, 0x08); } else { ret |= es8311_writereg(priv, ES8311_DAC_REG31, reg); ret |= es8311_writereg(priv, ES8311_SYSTEM_REG12, 0x00); } } if (module == ES_MODULE_ADC || module == ES_MODULE_ADC_DAC) { reg = es8311_readreg(priv, ES8311_SDPOUT_REG0A) & 0xbf; ret |= es8311_writereg(priv, ES8311_SDPOUT_REG0A, reg | ((int) enable << 6)); } if (ret < 0) { auderr("Failed to set mute.\n"); return -EIO; } else { audinfo("Set mute to: %d\n", (int)enable); return OK; } } #endif /**************************************************************************** * Name: es8311_setbitspersample * * Description: * Set the number of bits per sample used by the I2S driver and the codec. * * Input Parameters: * priv - A reference to the driver state structure. * * Returned Value: * Returns OK or a negated errno value on failure. * ****************************************************************************/ static int es8311_setbitspersample(FAR struct es8311_dev_s *priv) { uint8_t reg; uint8_t bit_config; int ret; DEBUGASSERT(priv && priv->lower); switch (priv->bpsamp) { case 16: bit_config = ES_WORD_LENGTH_16BITS; break; case 24: bit_config = ES_WORD_LENGTH_24BITS; break; case 32: bit_config = ES_WORD_LENGTH_32BITS; break; default: audwarn("Data length not supported.\n"); return -EINVAL; } ret = I2S_RXDATAWIDTH(priv->i2s, priv->bpsamp); if (ret < 0) { auderr("I2S_RXDATAWIDTH failed.\n"); return ret; } ret = I2S_TXDATAWIDTH(priv->i2s, priv->bpsamp); if (ret < 0) { auderr("I2S_TXDATAWIDTH failed.\n"); return ret; } ret = 0; if (priv->audio_mode == ES_MODULE_ADC || priv->audio_mode == ES_MODULE_ADC_DAC) { reg = es8311_readreg(priv, ES8311_SDPOUT_REG0A) & 0xe3; ret |= es8311_writereg(priv, ES8311_SDPOUT_REG0A, reg | (bit_config << 2)); } if (priv->audio_mode == ES_MODULE_DAC || priv->audio_mode == ES_MODULE_ADC_DAC) { reg = es8311_readreg(priv, ES8311_SDPIN_REG09) & 0xe3; ret |= es8311_writereg(priv, ES8311_SDPIN_REG09, reg | (bit_config << 2)); } if (ret < 0) { auderr("Failed to set bits per sample\n"); return -EIO; } else { audinfo("Bits per sample set to: %d\n", priv->bpsamp); return OK; } } /**************************************************************************** * Name: es8311_setsamplerate * * Description: * Sets the sample frequency for the codec ADC/DAC and the I2S driver. * * Input Parameters: * priv - A reference to the driver state structure. * * Returned Value: * Returns OK or a negated errno value on failure. * ****************************************************************************/ static int es8311_setsamplerate(FAR struct es8311_dev_s *priv) { DEBUGASSERT(priv && priv->lower); uint8_t regconfig; uint8_t datmp; int coeff_index; int ret; priv->mclk = I2S_GETMCLKFREQUENCY(priv->i2s); coeff_index = es8311_getcoeff(priv, priv->samprate); if (coeff_index < 0) { auderr("Failed to set sample rate: %d\n", -EINVAL); return -EINVAL; } ret = I2S_RXSAMPLERATE(priv->i2s, priv->samprate); if (ret < 0) { auderr("I2S_RXSAMPLERATE failed.\n"); return ret; } ret = I2S_TXSAMPLERATE(priv->i2s, priv->samprate); if (ret < 0) { auderr("I2S_TXSAMPLERATE failed.\n"); return ret; } ret = 0; regconfig = es8311_readreg(priv, ES8311_CLK_MANAGER_REG02) & 0x07; regconfig |= (es8311_coeff_div[coeff_index].pre_div - 1) << 5; datmp = 0; switch (es8311_coeff_div[coeff_index].pre_multi) { case 1: datmp = 0; break; case 2: datmp = 1; break; case 4: datmp = 2; break; case 8: datmp = 3; break; default: break; } if (es8311_get_mclk_src() == ES8311_MCLK_FROM_SCLK_PIN) { datmp = 3; /* DIG_MCLK = LRCK * 256 = BCLK * 8 */ } regconfig |= (datmp) << 3; ret |= es8311_writereg(priv, ES8311_CLK_MANAGER_REG02, regconfig); regconfig = es8311_readreg(priv, ES8311_CLK_MANAGER_REG05) & 0x00; regconfig |= (es8311_coeff_div[coeff_index].adc_div - 1) << 4; regconfig |= (es8311_coeff_div[coeff_index].dac_div - 1) << 0; ret |= es8311_writereg(priv, ES8311_CLK_MANAGER_REG05, regconfig); regconfig = es8311_readreg(priv, ES8311_CLK_MANAGER_REG03) & 0x80; regconfig |= es8311_coeff_div[coeff_index].fs_mode << 6; regconfig |= es8311_coeff_div[coeff_index].adc_osr << 0; ret |= es8311_writereg(priv, ES8311_CLK_MANAGER_REG03, regconfig); regconfig = es8311_readreg(priv, ES8311_CLK_MANAGER_REG04) & 0x80; regconfig |= es8311_coeff_div[coeff_index].dac_osr << 0; ret |= es8311_writereg(priv, ES8311_CLK_MANAGER_REG04, regconfig); regconfig = es8311_readreg(priv, ES8311_CLK_MANAGER_REG07) & 0xc0; regconfig |= es8311_coeff_div[coeff_index].lrck_h << 0; ret |= es8311_writereg(priv, ES8311_CLK_MANAGER_REG07, regconfig); regconfig = es8311_readreg(priv, ES8311_CLK_MANAGER_REG08) & 0x00; regconfig |= es8311_coeff_div[coeff_index].lrck_l << 0; ret |= es8311_writereg(priv, ES8311_CLK_MANAGER_REG08, regconfig); regconfig = es8311_readreg(priv, ES8311_CLK_MANAGER_REG06) & 0xe0; if (es8311_coeff_div[coeff_index].bclk_div < 19) { regconfig |= (es8311_coeff_div[coeff_index].bclk_div - 1) << 0; } else { regconfig |= (es8311_coeff_div[coeff_index].bclk_div) << 0; } ret |= es8311_writereg(priv, ES8311_CLK_MANAGER_REG06, regconfig); if (ret < 0) { auderr("Failed to set sample rate.\n"); return -EIO; } else { audinfo("Sample rate set to: %d.\n", priv->samprate); return OK; } } /**************************************************************************** * Name: es8311_getcaps * * Description: * Get the audio device capabilities. * * Input Parameters: * dev - A reference to the lower half state structure. * type - The type of query. * caps - A reference to an audio caps structure. * * Returned Value: * Length of the caps structure. * ****************************************************************************/ static int es8311_getcaps(FAR struct audio_lowerhalf_s *dev, int type, FAR struct audio_caps_s *caps) { /* Validate the structure */ DEBUGASSERT(caps && caps->ac_len >= sizeof(struct audio_caps_s)); audinfo("getcaps: type=%d ac_type=%d\n", type, caps->ac_type); /* Fill in the caller's structure based on requested info */ caps->ac_format.hw = 0; caps->ac_controls.w = 0; switch (caps->ac_type) { /* Caller is querying for the types of units we support */ case AUDIO_TYPE_QUERY: /* Provide our overall capabilities. The interfacing software * must then call us back for specific info for each capability. */ caps->ac_channels = 1; /* Mono output */ switch (caps->ac_subtype) { case AUDIO_TYPE_QUERY: /* The types of audio units we implement */ caps->ac_controls.b[0] = AUDIO_TYPE_INPUT | AUDIO_TYPE_OUTPUT | AUDIO_TYPE_FEATURE; break; default: caps->ac_controls.b[0] = AUDIO_SUBFMT_END; break; } break; /* Provide capabilities of our OUTPUT unit */ case AUDIO_TYPE_OUTPUT: caps->ac_channels = 1; switch (caps->ac_subtype) { case AUDIO_TYPE_QUERY: /* Report the Sample rates we support */ /* 8kHz is hardware dependent */ caps->ac_controls.b[0] = AUDIO_SAMP_RATE_11K | AUDIO_SAMP_RATE_16K | AUDIO_SAMP_RATE_22K | AUDIO_SAMP_RATE_32K | AUDIO_SAMP_RATE_44K | AUDIO_SAMP_RATE_48K; caps->ac_controls.b[1] = 0; break; default: break; } break; case AUDIO_TYPE_INPUT: caps->ac_channels = 1; switch (caps->ac_subtype) { case AUDIO_TYPE_QUERY: /* Report supported input sample rates */ caps->ac_controls.b[0] = AUDIO_SAMP_RATE_11K | AUDIO_SAMP_RATE_16K | AUDIO_SAMP_RATE_22K | AUDIO_SAMP_RATE_32K | AUDIO_SAMP_RATE_44K | AUDIO_SAMP_RATE_48K; caps->ac_controls.b[1] = 0; break; default: break; } break; /* Provide capabilities of our FEATURE units */ case AUDIO_TYPE_FEATURE: /* If the sub-type is UNDEF, then report the Feature Units we * support. */ if (caps->ac_subtype == AUDIO_FU_UNDEF) { /* Fill in the ac_controls section with the Feature Units we * have. */ caps->ac_controls.b[0] = AUDIO_FU_VOLUME | AUDIO_FU_MUTE; caps->ac_controls.b[1] = (AUDIO_FU_INP_GAIN) >> 8; } break; /* All others we don't support */ default: /* Zero out the fields to indicate no support */ caps->ac_subtype = 0; caps->ac_channels = 0; break; } /* Return the length of the audio_caps_s struct for validation of * proper Audio device type. */ return caps->ac_len; } /**************************************************************************** * Name: es8311_configure * * Description: * Configure the audio device for the specified mode of operation. * * Input Parameters: * dev - A reference to the lower half state structure. * session - The current audio session. * caps - A reference to an audio caps structure. * * Returned Value: * Returns OK or a negated errno value on failure. * ****************************************************************************/ #ifdef CONFIG_AUDIO_MULTI_SESSION static int es8311_configure(FAR struct audio_lowerhalf_s *dev, FAR void *session, FAR const struct audio_caps_s *caps) #else /* !CONFIG_AUDIO_MULTI_SESSION */ static int es8311_configure(FAR struct audio_lowerhalf_s *dev, FAR const struct audio_caps_s *caps) #endif /* !CONFIG_AUDIO_MULTI_SESSION */ { FAR struct es8311_dev_s *priv = (FAR struct es8311_dev_s *)dev; int ret = OK; DEBUGASSERT(priv != NULL && caps != NULL); audinfo("configure: ac_type: %d\n", caps->ac_type); /* Process the configure operation */ switch (caps->ac_type) { case AUDIO_TYPE_FEATURE: audinfo(" AUDIO_TYPE_FEATURE\n"); /* Process based on Feature Unit */ switch (caps->ac_format.hw) { #ifndef CONFIG_AUDIO_EXCLUDE_VOLUME case AUDIO_FU_VOLUME: { /* Set the volume */ uint16_t volume = caps->ac_controls.hw[0]; audinfo(" Volume: %d\n", volume); if (volume >= 0 && volume <= 1000) { es8311_setvolume(priv, priv->audio_mode, volume); } else { ret = -EDOM; } } break; #endif /* CONFIG_AUDIO_EXCLUDE_VOLUME */ #ifndef CONFIG_AUDIO_EXCLUDE_MUTE case AUDIO_FU_MUTE: { /* Mute/Unmute */ bool mute = (bool)caps->ac_controls.hw[0]; audinfo(" Mute: %d\n", mute); es8311_setmute(priv, ES_MODULE_DAC, mute); } break; #endif /* CONFIG_AUDIO_EXCLUDE_MUTE */ case AUDIO_FU_INP_GAIN: { /* Set the mic gain */ uint32_t mic_gain = caps->ac_controls.hw[0]; audinfo(" Mic gain: %" PRIu32 "\n", mic_gain); es8311_setmicgain(priv, mic_gain); } break; default: auderr(" Unrecognized feature unit\n"); ret = -ENOTTY; break; } break; case AUDIO_TYPE_OUTPUT: { audinfo(" AUDIO_TYPE_OUTPUT:\n"); audinfo(" Number of channels: %u\n", caps->ac_channels); audinfo(" Sample rate: %u\n", caps->ac_controls.hw[0]); audinfo(" Sample width: %u\n", caps->ac_controls.b[2]); /* Verify that all of the requested values are supported */ ret = -ERANGE; /* The codec can take stereo audio and play only one channel */ if (caps->ac_channels != 1 && caps->ac_channels != 2) { auderr("Unsupported number of channels: %d\n", caps->ac_channels); break; } if (caps->ac_controls.b[2] != 16 && caps->ac_controls.b[2] != 24 && caps->ac_controls.b[2] != 32) { auderr("Unsupported bits per sample: %d\n", caps->ac_controls.b[2]); break; } /* Save the current stream configuration */ priv->samprate = caps->ac_controls.hw[0]; priv->bpsamp = caps->ac_controls.b[2]; es8311_audio_output(priv); ret |= es8311_reset(priv); es8311_setsamplerate(priv); es8311_setbitspersample(priv); ret = OK; } break; case AUDIO_TYPE_INPUT: { audinfo(" AUDIO_TYPE_INPUT:\n"); audinfo(" Number of channels: %u\n", caps->ac_channels); audinfo(" Sample rate: %u\n", caps->ac_controls.hw[0]); audinfo(" Sample width: %u\n", caps->ac_controls.b[2]); /* Verify that all of the requested values are supported */ ret = -ERANGE; /* The codec can take stereo audio and play only one channel */ if (caps->ac_channels != 1 && caps->ac_channels != 2) { auderr("Unsupported number of channels: %d\n", caps->ac_channels); break; } if (caps->ac_controls.b[2] != 16 && caps->ac_controls.b[2] != 24 && caps->ac_controls.b[2] != 32) { auderr("Unsupported bits per sample: %d\n", caps->ac_controls.b[2]); break; } /* Save the current stream configuration */ priv->samprate = caps->ac_controls.hw[0]; priv->bpsamp = caps->ac_controls.b[2]; es8311_audio_input(priv); es8311_reset(priv); es8311_setsamplerate(priv); es8311_setbitspersample(priv); ret = OK; } break; case AUDIO_TYPE_PROCESSING: break; } return ret; } /**************************************************************************** * Name: es8311_shutdown * * Description: * Shutdown the ES8311 chip and reset it. * * Input Parameters: * dev - A reference to the lower half state structure. * * Returned Value: * Returns OK. * ****************************************************************************/ static int es8311_shutdown(FAR struct audio_lowerhalf_s *dev) { FAR struct es8311_dev_s *priv = (FAR struct es8311_dev_s *)dev; DEBUGASSERT(priv); audinfo("Shutdown triggered\n"); /* Now issue a software reset. This puts all ES8311 registers back in * their default state. */ es8311_reset(priv); return OK; } /**************************************************************************** * Name: es8311_processdone * * Description: * This is the I2S callback function that is invoked when the transfer * completes. * * Input Parameters: * i2s - A reference to the I2S interface. * apb - A reference to the audio pipeline buffer. * arg - A void reference to the driver state structure. * result - The result of the last transfer. * * Returned Value: * None. * ****************************************************************************/ static void es8311_processdone(FAR struct i2s_dev_s *i2s, FAR struct ap_buffer_s *apb, FAR void *arg, int result) { FAR struct es8311_dev_s *priv = (FAR struct es8311_dev_s *)arg; struct audio_msg_s msg; irqstate_t flags; int ret; DEBUGASSERT(i2s && priv && priv->running && apb); audinfo("Transfer done: apb=%p inflight=%d result=%d\n", apb, priv->inflight, result); /* We do not place any restriction on the context in which this function * is called. It may be called from an interrupt handler. Therefore, the * doneq and in-flight values might be accessed from the interrupt level. * Not the best design. But we will use interrupt controls to protect * against that possibility. */ flags = enter_critical_section(); /* Add the completed buffer to the end of our doneq. We do not yet * decrement the reference count. */ dq_addlast((FAR dq_entry_t *)apb, &priv->doneq); /* And decrement the number of buffers in-flight */ DEBUGASSERT(priv->inflight > 0); priv->inflight--; /* Save the result of the transfer */ priv->result = result; leave_critical_section(flags); /* Now send a message to the worker thread, informing it that there are * buffers in the done queue that need to be cleaned up. */ msg.msg_id = AUDIO_MSG_COMPLETE; ret = file_mq_send(&priv->mq, (FAR const char *)&msg, sizeof(msg), CONFIG_ES8311_MSG_PRIO); if (ret < 0) { auderr("file_mq_send failed: %d\n", ret); } } /**************************************************************************** * Name: es8311_returnbuffers * * Description: * This function is called after the completion of one or more data * transfers. This function will empty the done queue and release our * reference to each buffer. * * Input Parameters: * priv - A reference to the driver state structure. * * Returned Value: * None. * ****************************************************************************/ static void es8311_returnbuffers(FAR struct es8311_dev_s *priv) { FAR struct ap_buffer_s *apb; irqstate_t flags; /* The doneq and in-flight values might be accessed from the interrupt * level in some implementations. Not the best design. But we will * use interrupt controls to protect against that possibility. */ flags = enter_critical_section(); while (dq_peek(&priv->doneq) != NULL) { /* Take the next buffer from the queue of completed transfers */ apb = (FAR struct ap_buffer_s *)dq_remfirst(&priv->doneq); leave_critical_section(flags); audinfo("Returning: apb=%p curbyte=%d nbytes=%d flags=%04x\n", apb, apb->curbyte, apb->nbytes, apb->flags); /* Are we returning the final buffer in the stream? */ if ((apb->flags & AUDIO_APB_FINAL) != 0) { /* Both the pending and the done queues should be empty and there * should be no buffers in-flight. */ DEBUGASSERT(dq_empty(&priv->doneq) && dq_empty(&priv->pendq) && priv->inflight == 0); /* Set the terminating flag. This will, eventually, cause the * worker thread to exit (if it is not already terminating). */ audinfo("Terminating\n"); priv->terminating = true; } /* Release our reference to the audio buffer */ apb_free(apb); /* Send the buffer back up to the previous level. */ #ifdef CONFIG_AUDIO_MULTI_SESSION priv->dev.upper(priv->dev.priv, AUDIO_CALLBACK_DEQUEUE, apb, OK, NULL); #else /* !CONFIG_AUDIO_MULTI_SESSION */ priv->dev.upper(priv->dev.priv, AUDIO_CALLBACK_DEQUEUE, apb, OK); #endif /* !CONFIG_AUDIO_MULTI_SESSION */ flags = enter_critical_section(); } leave_critical_section(flags); } /**************************************************************************** * Name: es8311_processbegin * * Description: * Start the transfer an audio buffer to the ES8311 via I2S. This * will not wait for the transfer to complete but will return immediately. * the es8311_processdone called will be invoked when the transfer * completes, stimulating the worker thread to call this function again. * * Input Parameters: * priv - A reference to the driver state structure. * * Returned Value: * Returns OK or a negated errno value on failure. * ****************************************************************************/ static int es8311_processbegin(FAR struct es8311_dev_s *priv) { FAR struct ap_buffer_s *apb; irqstate_t flags; uint32_t timeout; int ret; /* Loop while there are audio buffers to be sent and we have few than * CONFIG_ES8311_INFLIGHT then "in-flight" * * The 'inflight' value might be modified from the interrupt level in some * implementations. We will use interrupt controls to protect against * that possibility. * * The 'pendq', on the other hand, is protected via a mutex. Let's * hold the mutex while we are busy here and disable the interrupts * only while accessing 'inflight'. */ ret = nxmutex_lock(&priv->pendlock); if (ret < 0) { return ret; } while (priv->inflight < CONFIG_ES8311_INFLIGHT && dq_peek(&priv->pendq) != NULL && !priv->paused) { /* Take next buffer from the queue of pending transfers */ apb = (FAR struct ap_buffer_s *)dq_remfirst(&priv->pendq); audinfo("Transferring apb=%p, size=%d inflight=%d\n", apb, apb->nbytes, priv->inflight); /* Increment the number of buffers in-flight before sending in order * to avoid a possible race condition. */ flags = enter_critical_section(); priv->inflight++; leave_critical_section(flags); /* Send the entire audio buffer via I2S. What is a reasonable timeout * to use? This would depend on the bit rate and size of the buffer. * * Samples in the buffer (samples): * = buffer_size * 8 / bpsamp * Sample rate (samples/second): * = samplerate * nchannels * Expected transfer time (seconds): * = (buffer_size * 8) / bpsamp / samplerate * * We will set the timeout about twice that. * * NOTES: * - The multiplier of 8 becomes 16000 for 2x and units of * milliseconds. * - 16000 is a approximately 16384 (1 << 14). * So this can be simplifies to (milliseconds): * * = (buffer_size << 14) / bpsamp / samplerate */ timeout = MSEC2TICK(((uint32_t)(apb->nbytes - apb->curbyte) << 14) / (uint32_t)priv->samprate / (uint32_t)priv->bpsamp); if (priv->audio_mode == ES_MODULE_DAC) { ret = I2S_SEND(priv->i2s, apb, es8311_processdone, priv, timeout); } else { ret = I2S_RECEIVE(priv->i2s, apb, es8311_processdone, priv, timeout); } if (ret < 0) { auderr("I2S transfer failed: %d\n", ret); break; } } nxmutex_unlock(&priv->pendlock); return ret; } /**************************************************************************** * Name: es8311_start * * Description: * Start the configured operation (audio streaming, volume enabled, etc.). * * Input Parameters: * dev - A reference to the lower half state structure. * session - The current audio session. * * Returned Value: * Returns OK or a negated errno value on failure. * ****************************************************************************/ #ifdef CONFIG_AUDIO_MULTI_SESSION static int es8311_start(FAR struct audio_lowerhalf_s *dev, FAR void *session) #else /* !CONFIG_AUDIO_MULTI_SESSION */ static int es8311_start(FAR struct audio_lowerhalf_s *dev) #endif /* !CONFIG_AUDIO_MULTI_SESSION */ { FAR struct es8311_dev_s *priv = (FAR struct es8311_dev_s *)dev; struct sched_param sparam; struct mq_attr attr; pthread_attr_t tattr; FAR void *value; int ret = OK; uint8_t dac_iface; uint8_t adc_iface; audinfo("ES8311 Start\n"); if (priv->audio_mode == ES_MODULE_LINE) { auderr("The codec ES8311 doesn't support ES_MODULE_LINE mode"); return -EINVAL; } if (priv->audio_mode == ES_MODULE_ADC || priv->audio_mode == ES_MODULE_ADC_DAC) { adc_iface = es8311_readreg(priv, ES8311_SDPOUT_REG0A) & 0xbf; ret |= es8311_writereg(priv, ES8311_SDPOUT_REG0A, adc_iface); } if (priv->audio_mode == ES_MODULE_DAC || priv->audio_mode == ES_MODULE_ADC_DAC) { dac_iface = es8311_readreg(priv, ES8311_SDPIN_REG09) & 0xbf; ret |= es8311_writereg(priv, ES8311_SDPIN_REG09, dac_iface); } ret |= es8311_writereg(priv, ES8311_ADC_REG17, 0xbf); ret |= es8311_writereg(priv, ES8311_SYSTEM_REG0E, 0x02); ret |= es8311_writereg(priv, ES8311_SYSTEM_REG12, 0x00); ret |= es8311_writereg(priv, ES8311_SYSTEM_REG14, 0x1a); ret |= es8311_writereg(priv, ES8311_SYSTEM_REG0D, 0x01); ret |= es8311_writereg(priv, ES8311_ADC_REG15, 0x40); ret |= es8311_writereg(priv, ES8311_DAC_REG37, 0x48); ret |= es8311_writereg(priv, ES8311_GP_REG45, 0x00); /* Set internal reference signal (ADCL + DACR) */ ret |= es8311_writereg(priv, ES8311_GPIO_REG44, 0x50); if (ret < 0) { auderr("Failed to start operation.\n"); return -EIO; } else { audinfo("Operation has been started.\n"); } /* Create a message queue for the worker thread */ snprintf(priv->mqname, sizeof(priv->mqname), "/regconfig/%" PRIXPTR, (uintptr_t)priv); attr.mq_maxmsg = 16; attr.mq_msgsize = sizeof(struct audio_msg_s); attr.mq_curmsgs = 0; attr.mq_flags = 0; ret = file_mq_open(&priv->mq, priv->mqname, O_RDWR | O_CREAT, 0644, &attr); if (ret < 0) { /* Error creating message queue! */ auderr("Couldn't allocate message queue\n"); return ret; } /* Join any old worker thread we had created to prevent a memory leak */ if (priv->threadid != 0) { audinfo("Joining old thread\n"); pthread_join(priv->threadid, &value); } /* Start our thread for processing device data */ pthread_attr_init(&tattr); sparam.sched_priority = sched_get_priority_max(SCHED_FIFO) - 3; pthread_attr_setschedparam(&tattr, &sparam); pthread_attr_setstacksize(&tattr, CONFIG_ES8311_WORKER_STACKSIZE); audinfo("Starting worker thread\n"); ret = pthread_create(&priv->threadid, &tattr, es8311_workerthread, (pthread_addr_t)priv); if (ret != OK) { auderr("pthread_create failed: %d\n", ret); } else { pthread_setname_np(priv->threadid, "es8311"); audinfo("Created worker thread\n"); } return ret; } /**************************************************************************** * Name: es8311_stop * * Description: Stop the configured operation (audio streaming, volume * disabled, etc.). * * Input Parameters: * dev - A reference to the lower half state structure. * session - The current audio session. * * Returned Value: * Returns OK or a negated errno value on failure. * ****************************************************************************/ #ifndef CONFIG_AUDIO_EXCLUDE_STOP #ifdef CONFIG_AUDIO_MULTI_SESSION static int es8311_stop(FAR struct audio_lowerhalf_s *dev, FAR void *session) #else /* !CONFIG_AUDIO_MULTI_SESSION */ static int es8311_stop(FAR struct audio_lowerhalf_s *dev) #endif /* !CONFIG_AUDIO_MULTI_SESSION */ { FAR struct es8311_dev_s *priv = (FAR struct es8311_dev_s *)dev; struct audio_msg_s term_msg; FAR void *value; int ret = 0; uint8_t dac_iface; uint8_t adc_iface; audinfo("ES8311 Stop\n"); if (priv->audio_mode == ES_MODULE_ADC || priv->audio_mode == ES_MODULE_ADC_DAC) { adc_iface = es8311_readreg(priv, ES8311_SDPOUT_REG0A) | 0x40; ret |= es8311_writereg(priv, ES8311_SDPOUT_REG0A, adc_iface); } if (priv->audio_mode == ES_MODULE_DAC || priv->audio_mode == ES_MODULE_ADC_DAC) { dac_iface = es8311_readreg(priv, ES8311_SDPIN_REG09) | 0x40; ret |= es8311_writereg(priv, ES8311_SDPIN_REG09, dac_iface); } ret |= es8311_writereg(priv, ES8311_DAC_REG32, 0x00); ret |= es8311_writereg(priv, ES8311_ADC_REG17, 0x00); ret |= es8311_writereg(priv, ES8311_SYSTEM_REG0E, 0xff); ret |= es8311_writereg(priv, ES8311_SYSTEM_REG12, 0x02); ret |= es8311_writereg(priv, ES8311_SYSTEM_REG14, 0x00); ret |= es8311_writereg(priv, ES8311_SYSTEM_REG0D, 0xfa); ret |= es8311_writereg(priv, ES8311_ADC_REG15, 0x00); ret |= es8311_writereg(priv, ES8311_DAC_REG37, 0x08); ret |= es8311_writereg(priv, ES8311_GP_REG45, 0x01); /* Send a message to stop all audio streaming */ term_msg.msg_id = AUDIO_MSG_STOP; term_msg.u.data = 0; file_mq_send(&priv->mq, (FAR const char *)&term_msg, sizeof(term_msg), CONFIG_ES8311_MSG_PRIO); /* Join the worker thread */ pthread_join(priv->threadid, &value); priv->threadid = 0; es8311_dump_registers(&priv->dev, "After stop"); if (ret < 0) { auderr("Failed to stop operation.\n"); } else { audinfo("Operation has been stopped.\n"); } return ret; } #endif /* CONFIG_AUDIO_EXCLUDE_STOP */ /**************************************************************************** * Name: es8311_pause * * Description: Pauses the playback. * * Input Parameters: * dev - A reference to the lower half state structure. * session - The current audio session. * * Returned Value: * Returns OK or a negated errno value on failure. * ****************************************************************************/ #ifndef CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME #ifdef CONFIG_AUDIO_MULTI_SESSION static int es8311_pause(FAR struct audio_lowerhalf_s *dev, FAR void *session) #else /* !CONFIG_AUDIO_MULTI_SESSION */ static int es8311_pause(FAR struct audio_lowerhalf_s *dev) #endif /* !CONFIG_AUDIO_MULTI_SESSION */ { FAR struct es8311_dev_s *priv = (FAR struct es8311_dev_s *)dev; int ret = OK; audinfo("ES8311 Pause\n"); if (priv->running && !priv->paused) { priv->paused = true; #ifndef CONFIG_AUDIO_EXCLUDE_MUTE ret = es8311_setmute(priv, priv->audio_mode, true); #endif } if (ret < 0) { auderr("Failed to pause operation.\n"); } else { audinfo("Operation has been paused.\n"); } return ret; } #endif /* CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME */ /**************************************************************************** * Name: es8311_resume * * Description: Resumes the playback. * * Input Parameters: * dev - A reference to the lower half state structure. * session - The current audio session. * * Returned Value: * Returns OK or a negated errno value on failure. * ****************************************************************************/ #ifndef CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME #ifdef CONFIG_AUDIO_MULTI_SESSION static int es8311_resume(FAR struct audio_lowerhalf_s *dev, FAR void *session) #else /* !CONFIG_AUDIO_MULTI_SESSION */ static int es8311_resume(FAR struct audio_lowerhalf_s *dev) #endif /* !CONFIG_AUDIO_MULTI_SESSION */ { FAR struct es8311_dev_s *priv = (FAR struct es8311_dev_s *)dev; int ret = OK; audinfo("ES8311 Resume\n"); if (priv->running && priv->paused) { priv->paused = false; #ifndef CONFIG_AUDIO_EXCLUDE_MUTE ret = es8311_setmute(priv, priv->audio_mode, false); #endif /* CONFIG_AUDIO_EXCLUDE_MUTE */ es8311_processbegin(priv); } if (ret < 0) { auderr("Failed to resume operation.\n"); } else { audinfo("Operation has been resumed.\n"); } return ret; } #endif /* CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME */ /**************************************************************************** * Name: es8311_enqueuebuffer * * Description: * Enqueue an Audio Pipeline Buffer for processing. * * Input Parameters: * dev - A reference to the lower half state structure. * apb - A reference to the audio pipeline buffer. * * Returned Value: * Returns OK or a negated errno value on failure. * ****************************************************************************/ static int es8311_enqueuebuffer(FAR struct audio_lowerhalf_s *dev, FAR struct ap_buffer_s *apb) { FAR struct es8311_dev_s *priv = (FAR struct es8311_dev_s *)dev; struct audio_msg_s term_msg; int ret; audinfo("Enqueueing: apb=%p curbyte=%d nbytes=%d flags=%04x\n", apb, apb->curbyte, apb->nbytes, apb->flags); ret = nxmutex_lock(&priv->pendlock); if (ret < 0) { return ret; } /* Take a reference on the new audio buffer */ apb_reference(apb); /* Add the new buffer to the tail of pending audio buffers */ dq_addlast(&apb->dq_entry, &priv->pendq); nxmutex_unlock(&priv->pendlock); /* Send a message to the worker thread indicating that a new buffer has * been enqueued. If mq is NULL, then the playing has not yet started. * In that case we are just "priming the pump" and we don't need to send * any message. */ ret = OK; if (priv->mq.f_inode != NULL) { term_msg.msg_id = AUDIO_MSG_ENQUEUE; term_msg.u.data = 0; ret = file_mq_send(&priv->mq, (FAR const char *)&term_msg, sizeof(term_msg), CONFIG_ES8311_MSG_PRIO); if (ret < 0) { auderr("file_mq_send failed: %d\n", ret); } } return ret; } /**************************************************************************** * Name: es8311_cancelbuffer * * Description: Called when an enqueued buffer is being cancelled. * * Input Parameters: * dev - A reference to the lower half state structure. * apb - A reference to the audio pipeline buffer. * * Returned Value: * Returns OK. * ****************************************************************************/ static int es8311_cancelbuffer(FAR struct audio_lowerhalf_s *dev, FAR struct ap_buffer_s *apb) { audinfo("Cancelled apb=%p\n", apb); return OK; } /**************************************************************************** * Name: es8311_ioctl * * Description: Perform a device IOCTL. * * Input Parameters: * dev - A reference to the lower half state structure. * cmd - The IOCTL command. * arg - The argument of the IOCTL command. * * Returned Value: * Returns OK or a negated errno value on failure. * ****************************************************************************/ static int es8311_ioctl(FAR struct audio_lowerhalf_s *dev, int cmd, unsigned long arg) { int ret = OK; #ifdef CONFIG_AUDIO_DRIVER_SPECIFIC_BUFFERS FAR struct ap_buffer_info_s *bufinfo; #endif /* CONFIG_AUDIO_DRIVER_SPECIFIC_BUFFERS */ /* Deal with ioctls passed from the upper-half driver */ switch (cmd) { /* Report our preferred buffer size and quantity */ #ifdef CONFIG_AUDIO_DRIVER_SPECIFIC_BUFFERS case AUDIOIOC_GETBUFFERINFO: { audinfo("AUDIOIOC_GETBUFFERINFO:\n"); bufinfo = (FAR struct ap_buffer_info_s *) arg; bufinfo->buffer_size = CONFIG_ES8311_BUFFER_SIZE; bufinfo->nbuffers = CONFIG_ES8311_NUM_BUFFERS; } break; #endif /* CONFIG_AUDIO_DRIVER_SPECIFIC_BUFFERS */ default: ret = -ENOTTY; audinfo("Unhandled ioctl: %d\n", cmd); break; } return ret; } /**************************************************************************** * Name: es8311_reserve * * Description: Reserves a session (the only one we have). * * Input Parameters: * dev - A reference to the lower half state structure. * session - The current audio session. * * Returned Value: * Returns OK or a negated errno value on failure. * ****************************************************************************/ #ifdef CONFIG_AUDIO_MULTI_SESSION static int es8311_reserve(FAR struct audio_lowerhalf_s *dev, FAR void **session) #else /* !CONFIG_AUDIO_MULTI_SESSION */ static int es8311_reserve(FAR struct audio_lowerhalf_s *dev) #endif /* !CONFIG_AUDIO_MULTI_SESSION */ { FAR struct es8311_dev_s *priv = (FAR struct es8311_dev_s *) dev; int ret = OK; audinfo("ES8311 Reserve\n"); /* Borrow the APBQ semaphore for thread sync */ ret = nxmutex_lock(&priv->pendlock); if (ret < 0) { return ret; } if (priv->reserved) { ret = -EBUSY; } else { /* Initialize the session context */ #ifdef CONFIG_AUDIO_MULTI_SESSION *session = NULL; #endif /* CONFIG_AUDIO_MULTI_SESSION */ priv->inflight = 0; priv->running = false; priv->paused = false; #ifndef CONFIG_AUDIO_EXCLUDE_STOP priv->terminating = false; #endif /* CONFIG_AUDIO_EXCLUDE_STOP */ priv->reserved = true; } nxmutex_unlock(&priv->pendlock); return ret; } /**************************************************************************** * Name: es8311_release * * Description: Releases the session (the only one we have). * * Input Parameters: * dev - A reference to the lower half state structure. * session - The current audio session. * * Returned Value: * Returns OK or a negated errno value on failure. * ****************************************************************************/ #ifdef CONFIG_AUDIO_MULTI_SESSION static int es8311_release(FAR struct audio_lowerhalf_s *dev, FAR void *session) #else /* !CONFIG_AUDIO_MULTI_SESSION */ static int es8311_release(FAR struct audio_lowerhalf_s *dev) #endif /* !CONFIG_AUDIO_MULTI_SESSION */ { FAR struct es8311_dev_s *priv = (FAR struct es8311_dev_s *)dev; FAR void *value; int ret; audinfo("ES8311 Release\n"); /* Join any old worker thread we had created to prevent a memory leak */ if (priv->threadid != 0) { pthread_join(priv->threadid, &value); priv->threadid = 0; } /* Borrow the APBQ semaphore for thread sync */ ret = nxmutex_lock(&priv->pendlock); /* Really we should free any queued buffers here */ priv->reserved = false; nxmutex_unlock(&priv->pendlock); return ret; } /**************************************************************************** * Name: es8311_audio_output * * Description: * Initialize and configure the ES8311 device as an audio output device. * This will be mostly used when adding input support. * * Input Parameters: * priv - A reference to the driver state structure. * * Returned Value: * None. No failures are detected. * ****************************************************************************/ static void es8311_audio_output(FAR struct es8311_dev_s *priv) { audinfo("ES8311 set to output mode\n"); priv->audio_mode = ES_MODULE_DAC; } /**************************************************************************** * Name: es8311_audio_input * * Description: * Initialize and configure the ES8311 device as an audio input device. * This will be mostly used when adding input support. * * Input Parameters: * priv - A reference to the driver state structure. * * Returned Value: * None. No failures are detected. * ****************************************************************************/ static void es8311_audio_input(FAR struct es8311_dev_s *priv) { audinfo("ES8311 set to input mode\n"); priv->audio_mode = ES_MODULE_ADC; } /**************************************************************************** * Name: es8311_workerthread * * This is the thread that feeds data to the chip and keeps the audio * stream going. * * Input Parameters: * pvarg - The thread arguments. * * Returned Value: * Returns NULL. * ****************************************************************************/ static void *es8311_workerthread(pthread_addr_t pvarg) { FAR struct es8311_dev_s *priv = (struct es8311_dev_s *) pvarg; struct audio_msg_s msg; FAR struct ap_buffer_s *apb; int msglen; unsigned int prio; audinfo("ES8311 worker thread starting\n"); #ifndef CONFIG_AUDIO_EXCLUDE_STOP priv->terminating = false; #endif /* CONFIG_AUDIO_EXCLUDE_STOP */ priv->running = true; /* Loop as long as we are supposed to be running and as long as we have * buffers in-flight. */ while (priv->running || priv->inflight > 0) { /* Check if we have been asked to terminate. We have to check if we * still have buffers in-flight. If we do, then we can't stop until * birds come back to roost. */ if (priv->terminating && priv->inflight <= 0) { /* We are IDLE. Break out of the loop and exit. */ break; } else { /* Check if we can process more audio buffers */ es8311_processbegin(priv); } /* Wait for messages from our message queue */ msglen = file_mq_receive(&priv->mq, (FAR char *)&msg, sizeof(msg), &prio); /* Handle the case when we return with no message */ if (msglen < sizeof(struct audio_msg_s)) { auderr("Message too small: %d\n", msglen); continue; } /* Process the message */ switch (msg.msg_id) { /* The ISR has requested more data. We will catch this case at * the top of the loop. */ case AUDIO_MSG_DATA_REQUEST: audinfo("AUDIO_MSG_DATA_REQUEST\n"); break; /* Stop the playback */ #ifndef CONFIG_AUDIO_EXCLUDE_STOP case AUDIO_MSG_STOP: /* Indicate that we are terminating */ audinfo("AUDIO_MSG_STOP: Terminating\n"); priv->terminating = true; break; #endif /* CONFIG_AUDIO_EXCLUDE_STOP */ /* We have a new buffer to process. We will catch this case at * the top of the loop. */ case AUDIO_MSG_ENQUEUE: audinfo("AUDIO_MSG_ENQUEUE\n"); break; /* We will wake up from the I2S callback with this message */ case AUDIO_MSG_COMPLETE: audinfo("AUDIO_MSG_COMPLETE\n"); es8311_returnbuffers(priv); break; default: auderr("Ignoring message ID %d\n", msg.msg_id); break; } } /* Reset the ES8311 hardware */ es8311_reset(priv); /* Return any pending buffers in our pending queue */ nxmutex_lock(&priv->pendlock); while ((apb = (FAR struct ap_buffer_s *)dq_remfirst(&priv->pendq)) != NULL) { /* Release our reference to the buffer */ apb_free(apb); /* Send the buffer back up to the previous level. */ #ifdef CONFIG_AUDIO_MULTI_SESSION priv->dev.upper(priv->dev.priv, AUDIO_CALLBACK_DEQUEUE, apb, OK, NULL); #else /* !CONFIG_AUDIO_MULTI_SESSION */ priv->dev.upper(priv->dev.priv, AUDIO_CALLBACK_DEQUEUE, apb, OK); #endif /* !CONFIG_AUDIO_MULTI_SESSION */ } nxmutex_unlock(&priv->pendlock); /* Return any pending buffers in our done queue */ es8311_returnbuffers(priv); /* Close the message queue */ file_mq_close(&priv->mq); file_mq_unlink(priv->mqname); /* Send an AUDIO_MSG_COMPLETE message to the client */ #ifdef CONFIG_AUDIO_MULTI_SESSION priv->dev.upper(priv->dev.priv, AUDIO_CALLBACK_COMPLETE, NULL, OK, NULL); #else /* !CONFIG_AUDIO_MULTI_SESSION */ priv->dev.upper(priv->dev.priv, AUDIO_CALLBACK_COMPLETE, NULL, OK); #endif /* !CONFIG_AUDIO_MULTI_SESSION */ audinfo("ES8311 worker thread finishing\n"); return NULL; } /**************************************************************************** * Name: es8311_reset * * Description: * Reset and re-initialize the ES8311. * * Input Parameters: * priv - A reference to the driver state structure. * * Returned Value: * OK on success; a negated errno value on failure. * ****************************************************************************/ static int es8311_reset(FAR struct es8311_dev_s *priv) { /* Put audio back to its initial configuration */ audinfo("ES8311 reset triggered.\n"); priv->samprate = ES8311_DEFAULT_SAMPRATE; priv->bpsamp = ES8311_DEFAULT_BPSAMP; /* Software reset. This puts all ES8311 registers back in their * default state. */ uint8_t regconfig; int ret = 0; ret |= es8311_writereg(priv, ES8311_CLK_MANAGER_REG01, 0x30); ret |= es8311_writereg(priv, ES8311_CLK_MANAGER_REG02, 0x00); ret |= es8311_writereg(priv, ES8311_CLK_MANAGER_REG03, 0x10); ret |= es8311_writereg(priv, ES8311_ADC_REG16, 0x24); ret |= es8311_writereg(priv, ES8311_CLK_MANAGER_REG04, 0x10); ret |= es8311_writereg(priv, ES8311_CLK_MANAGER_REG05, 0x00); ret |= es8311_writereg(priv, ES8311_SYSTEM_REG0B, 0x00); ret |= es8311_writereg(priv, ES8311_SYSTEM_REG0C, 0x00); ret |= es8311_writereg(priv, ES8311_SYSTEM_REG10, 0x1f); ret |= es8311_writereg(priv, ES8311_SYSTEM_REG11, 0x7f); ret |= es8311_writereg(priv, ES8311_RESET_REG00, 0x80); regconfig = es8311_readreg(priv, ES8311_RESET_REG00); regconfig &= 0xbf; ret |= es8311_writereg(priv, ES8311_RESET_REG00, regconfig); ret |= es8311_writereg(priv, ES8311_CLK_MANAGER_REG01, 0x3f); if (es8311_get_mclk_src() == ES8311_MCLK_FROM_MCLK_PIN) { regconfig = es8311_readreg(priv, ES8311_CLK_MANAGER_REG01); regconfig &= 0x7f; ret |= es8311_writereg(priv, ES8311_CLK_MANAGER_REG01, regconfig); } else { regconfig = es8311_readreg(priv, ES8311_CLK_MANAGER_REG01); regconfig |= 0x80; ret |= es8311_writereg(priv, ES8311_CLK_MANAGER_REG01, regconfig); } ret |= es8311_setsamplerate(priv); ret |= es8311_setbitspersample(priv); regconfig = es8311_readreg(priv, ES8311_CLK_MANAGER_REG01); regconfig &= ~(0x40); ret |= es8311_writereg(priv, ES8311_CLK_MANAGER_REG01, regconfig); regconfig = es8311_readreg(priv, ES8311_CLK_MANAGER_REG06); regconfig &= ~(0x20); ret |= es8311_writereg(priv, ES8311_CLK_MANAGER_REG06, regconfig); ret |= es8311_writereg(priv, ES8311_SYSTEM_REG13, 0x10); ret |= es8311_writereg(priv, ES8311_ADC_REG1B, 0x0a); ret |= es8311_writereg(priv, ES8311_ADC_REG1C, 0x6a); ret |= es8311_setvolume(priv, ES_MODULE_ADC, CONFIG_ES8311_INPUT_INITVOLUME); ret |= es8311_setvolume(priv, ES_MODULE_DAC, CONFIG_ES8311_OUTPUT_INITVOLUME); es8311_dump_registers(&priv->dev, "After reset"); if (ret < 0) { auderr("Failed to reset the ES8311.\n"); return -EIO; } else { audinfo("ES8311 reset complete.\n"); return OK; } } /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: es8311_initialize * * Description: * Initialize the ES8311 device. * * Input Parameters: * i2c - An I2C driver instance. * i2s - An I2S driver instance. * lower - Persistent board configuration data. * * Returned Value: * A new lower half audio interface for the ES8311 device is returned on * success; NULL is returned on failure. * ****************************************************************************/ FAR struct audio_lowerhalf_s * es8311_initialize(FAR struct i2c_master_s *i2c, FAR struct i2s_dev_s *i2s, FAR const struct es8311_lower_s *lower) { FAR struct es8311_dev_s *priv; audinfo("Initializing ES8311\n"); /* Sanity check */ DEBUGASSERT(i2c && i2s && lower); /* Allocate a ES8311 device structure */ priv = (FAR struct es8311_dev_s *)kmm_zalloc(sizeof(struct es8311_dev_s)); if (priv) { priv->dev.ops = &g_audioops; priv->lower = lower; priv->i2c = i2c; priv->i2s = i2s; nxmutex_init(&priv->pendlock); dq_init(&priv->pendq); dq_init(&priv->doneq); audinfo("ES8311: address=%02x frequency=%" PRId32 "\n", lower->address, lower->frequency); /* Reset and reconfigure the ES8311 hardware */ es8311_dump_registers(&priv->dev, "Before reset"); es8311_audio_output(priv); es8311_reset(priv); audinfo("ES8311 initialized.\n"); return &priv->dev; } return NULL; }