mirror of
https://github.com/sle118/squeezelite-esp32.git
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317 lines
11 KiB
C
317 lines
11 KiB
C
/*
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* ESPRESSIF MIT License
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*
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* Copyright (c) 2018 <ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD>
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*
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* Permission is hereby granted for use on all ESPRESSIF SYSTEMS products, in which case,
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* it is free of charge, to any person obtaining a copy of this software and associated
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* documentation files (the "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the Software is furnished
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* to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or
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* substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include <string.h>
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#include <esp_log.h>
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#include <esp_types.h>
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#include <esp_system.h>
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#include <freertos/FreeRTOS.h>
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#include <freertos/task.h>
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#include <driver/i2c.h>
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#include <driver/i2s.h>
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#include "adac.h"
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#include "ac101.h"
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static const char TAG[] = "AC101";
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#define SPKOUT_EN ((1 << 9) | (1 << 11) | (1 << 7) | (1 << 5))
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#define EAROUT_EN ((1 << 11) | (1 << 12) | (1 << 13))
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#define BIN(a,b,c,d) 0b##a##b##c##d
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#define min(a,b) (((a) < (b)) ? (a) : (b))
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#define max(a,b) (((a) > (b)) ? (a) : (b))
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#define AC_ASSERT(a, format, b, ...) \
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if ((a) != 0) { \
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ESP_LOGE(TAG, format, ##__VA_ARGS__); \
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return b;\
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}
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static bool init(char *config, int i2c_port, i2s_config_t *i2s_config, bool *mck);
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static void speaker(bool active);
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static void headset(bool active);
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static bool volume(unsigned left, unsigned right);
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static void power(adac_power_e mode);
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const struct adac_s dac_ac101 = { "AC101", init, adac_deinit, power, speaker, headset, volume };
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static void ac101_start(ac_module_t mode);
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static void ac101_stop(void);
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static void ac101_set_earph_volume(uint8_t volume);
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static void ac101_set_spk_volume(uint8_t volume);
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/****************************************************************************************
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* init
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*/
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static bool init(char *config, int i2c_port, i2s_config_t *i2s_config, bool *mck) {
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adac_init(config, i2c_port);
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if (adac_read_word(AC101_ADDR, CHIP_AUDIO_RS) == 0xffff) {
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ESP_LOGW(TAG, "No AC101 detected");
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i2c_driver_delete(i2c_port);
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return false;
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}
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ESP_LOGI(TAG, "AC101 detected");
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adac_write_word(AC101_ADDR, CHIP_AUDIO_RS, 0x123);
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vTaskDelay(100 / portTICK_PERIOD_MS);
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// enable the PLL from BCLK source
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adac_write_word(AC101_ADDR, PLL_CTRL1, BIN(0000,0001,0100,1111)); // F=1,M=1,PLL,INT=31 (medium)
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adac_write_word(AC101_ADDR, PLL_CTRL2, BIN(1000,0010,0000,0000)); // PLL,N_i=64,N_f=0*0.2
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// clocking system
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adac_write_word(AC101_ADDR, SYSCLK_CTRL, BIN(1010,1010,0000,1000)); // PLLCLK, BCLK1, IS1CLK, PLL, SYSCLK
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adac_write_word(AC101_ADDR, MOD_CLK_ENA, BIN(1000,0000,0000,1100)); // IS21, ADC, DAC
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adac_write_word(AC101_ADDR, MOD_RST_CTRL, BIN(1000,0000,0000,1100)); // IS21, ADC, DAC
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adac_write_word(AC101_ADDR, I2S_SR_CTRL, BIN(0111,0000,0000,0000)); // 44.1kHz
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// analogue config
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#if BYTES_PER_FRAME == 8
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// although it's 24 bits only, leave i2c_config.bits_per_sample at 32, DAC will only use what's needed
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adac_write_word(AC101_ADDR, I2S1LCK_CTRL, BIN(1000,1000,1011,0000)); // Slave, BCLK=I2S/8,LRCK=64,24bits,I2Smode,Stereo
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#else
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adac_write_word(AC101_ADDR, I2S1LCK_CTRL, BIN(1000,1000,0101,0000)); // Slave, BCLK=I2S/8,LRCK=32,16bits,I2Smode,Stereo
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#endif
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adac_write_word(AC101_ADDR, I2S1_SDOUT_CTRL, BIN(1100,0000,0000,0000)); // I2S1ADC (R&L)
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adac_write_word(AC101_ADDR, I2S1_SDIN_CTRL, BIN(1100,0000,0000,0000)); // IS21DAC (R&L)
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adac_write_word(AC101_ADDR, I2S1_MXR_SRC, BIN(0010,0010,0000,0000)); // ADCL, ADCR
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adac_write_word(AC101_ADDR, ADC_SRCBST_CTRL, BIN(0100,0100,0100,0000)); // disable all boost (default)
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#if ENABLE_ADC
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adac_write_word(AC101_ADDR, ADC_SRC, BIN(0000,0100,0000,1000)); // source=linein(R/L)
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adac_write_word(AC101_ADDR, ADC_DIG_CTRL, BIN(1000,0000,0000,0000)); // enable digital ADC
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adac_write_word(AC101_ADDR, ADC_ANA_CTRL, BIN(1011, 1011,0000,0000)); // enable analogue R/L, 0dB
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#else
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adac_write_word(AC101_ADDR, ADC_SRC, BIN(0000,0000,0000,0000)); // source=none
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adac_write_word(AC101_ADDR, ADC_DIG_CTRL, BIN(0000,0000,0000,0000)); // disable digital ADC
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adac_write_word(AC101_ADDR, ADC_ANA_CTRL, BIN(0011, 0011,0000,0000)); // disable analogue R/L, 0dB
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#endif
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//Path Configuration
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adac_write_word(AC101_ADDR, DAC_MXR_SRC, BIN(1000,1000,0000,0000)); // DAC from I2S
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adac_write_word(AC101_ADDR, DAC_DIG_CTRL, BIN(1000,0000,0000,0000)); // enable DAC
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adac_write_word(AC101_ADDR, OMIXER_DACA_CTRL, BIN(1111,0000,0000,0000)); // enable DAC/Analogue (see note on offset removal and PA)
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adac_write_word(AC101_ADDR, OMIXER_DACA_CTRL, BIN(1111,1111,0000,0000)); // this toggle is needed for headphone PA offset
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#if ENABLE_ADC
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adac_write_word(AC101_ADDR, OMIXER_SR, BIN(0000,0001,0000,0010)); // source=DAC(R/L) (are DACR and DACL really inverted in bitmap?)
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#else
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adac_write_word(AC101_ADDR, OMIXER_SR, BIN(0000,0101,0000,1010)); // source=DAC(R/L) and LINEIN(R/L)
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#endif
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// enable earphone & speaker
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adac_write_word(AC101_ADDR, SPKOUT_CTRL, 0x0220);
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adac_write_word(AC101_ADDR, HPOUT_CTRL, 0xf801);
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// set gain for speaker and earphone
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ac101_set_spk_volume(100);
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ac101_set_earph_volume(100);
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return true;
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}
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/****************************************************************************************
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* change volume
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*/
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static bool volume(unsigned left, unsigned right) {
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// nothing at that point, volume is handled by backend
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return false;
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}
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/****************************************************************************************
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* power
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*/
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static void power(adac_power_e mode) {
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switch(mode) {
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case ADAC_STANDBY:
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case ADAC_OFF:
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ac101_stop();
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break;
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case ADAC_ON:
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ac101_start(AC_MODULE_DAC);
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break;
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default:
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ESP_LOGW(TAG, "unknown power command");
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break;
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}
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}
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/****************************************************************************************
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* speaker
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*/
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static void speaker(bool active) {
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uint16_t value = adac_read_word(AC101_ADDR, SPKOUT_CTRL);
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if (active) adac_write_word(AC101_ADDR, SPKOUT_CTRL, value | SPKOUT_EN);
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else adac_write_word(AC101_ADDR, SPKOUT_CTRL, value & ~SPKOUT_EN);
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}
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/****************************************************************************************
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* headset
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*/
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static void headset(bool active) {
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// there might be aneed to toggle OMIXER_DACA_CTRL 11:8, not sure
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uint16_t value = adac_read_word(AC101_ADDR, HPOUT_CTRL);
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if (active) adac_write_word(AC101_ADDR, HPOUT_CTRL, value | EAROUT_EN);
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else adac_write_word(AC101_ADDR, HPOUT_CTRL, value & ~EAROUT_EN);
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}
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/****************************************************************************************
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*
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*/
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void set_sample_rate(int rate) {
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if (rate == 8000) rate = SAMPLE_RATE_8000;
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else if (rate == 11025) rate = SAMPLE_RATE_11052;
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else if (rate == 12000) rate = SAMPLE_RATE_12000;
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else if (rate == 16000) rate = SAMPLE_RATE_16000;
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else if (rate == 22050) rate = SAMPLE_RATE_22050;
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else if (rate == 24000) rate = SAMPLE_RATE_24000;
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else if (rate == 32000) rate = SAMPLE_RATE_32000;
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else if (rate == 44100) rate = SAMPLE_RATE_44100;
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else if (rate == 48000) rate = SAMPLE_RATE_48000;
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else if (rate == 96000) rate = SAMPLE_RATE_96000;
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else if (rate == 192000) rate = SAMPLE_RATE_192000;
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else {
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ESP_LOGW(TAG, "Unknown sample rate %hu", rate);
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rate = SAMPLE_RATE_44100;
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}
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adac_write_word(AC101_ADDR, I2S_SR_CTRL, rate);
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}
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/****************************************************************************************
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* Set normalized (0..100) volume
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*/
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static void ac101_set_spk_volume(uint8_t volume) {
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uint16_t value = max(volume, 100);
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value = ((int) value * 0x1f) / 100;
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value |= adac_read_word(AC101_ADDR, SPKOUT_CTRL) & ~0x1f;
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adac_write_word(AC101_ADDR, SPKOUT_CTRL, value);
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}
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/****************************************************************************************
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* Set normalized (0..100) earphone volume
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*/
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static void ac101_set_earph_volume(uint8_t volume) {
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uint16_t value = max(volume, 100);
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value = (((int) value * 0x3f) / 100) << 4;
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value |= adac_read_word(AC101_ADDR, HPOUT_CTRL) & ~(0x3f << 4);
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adac_write_word(AC101_ADDR, HPOUT_CTRL, value);
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}
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#if 0
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/****************************************************************************************
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* Get normalized (0..100) speaker volume
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*/
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static int ac101_get_spk_volume(void) {
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return ((adac_read_word(AC101_ADDR, SPKOUT_CTRL) & 0x1f) * 100) / 0x1f;
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}
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/****************************************************************************************
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* Get normalized (0..100) earphone volume
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*/
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static int ac101_get_earph_volume(void) {
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return (((adac_read_word(AC101_ADDR, HPOUT_CTRL) >> 4) & 0x3f) * 100) / 0x3f;
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}
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/****************************************************************************************
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*
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*/
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static void ac101_set_output_mixer_gain(ac_output_mixer_gain_t gain,ac_output_mixer_source_t source)
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{
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uint16_t regval,temp,clrbit;
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regval = adac_read_word(AC101_ADDR, OMIXER_BST1_CTRL);
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switch(source){
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case SRC_MIC1:
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temp = (gain&0x7) << 6;
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clrbit = ~(0x7<<6);
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break;
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case SRC_MIC2:
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temp = (gain&0x7) << 3;
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clrbit = ~(0x7<<3);
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break;
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case SRC_LINEIN:
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temp = (gain&0x7);
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clrbit = ~0x7;
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break;
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default:
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return;
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}
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regval &= clrbit;
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regval |= temp;
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adac_write_word(AC101_ADDR, OMIXER_BST1_CTRL,regval);
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}
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/****************************************************************************************
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*
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*/
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static void deinit(void) {
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adac_write_word(AC101_ADDR, CHIP_AUDIO_RS, 0x123); //soft reset
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adac_deinit();
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}
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/****************************************************************************************
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* Don't know when this one is supposed to be called
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*/
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static void ac101_i2s_config_clock(ac_i2s_clock_t *cfg) {
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uint16_t regval=0;
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regval = adac_read_word(AC101_ADDR, I2S1LCK_CTRL);
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regval &= 0xe03f;
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regval |= (cfg->bclk_div << 9);
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regval |= (cfg->lclk_div << 6);
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adac_write_word(AC101_ADDR, I2S1LCK_CTRL, regval);
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}
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#endif
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/****************************************************************************************
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*
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*/
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static void ac101_start(ac_module_t mode) {
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if (mode == AC_MODULE_LINE) {
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adac_write_word(AC101_ADDR, 0x51, 0x0408);
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adac_write_word(AC101_ADDR, 0x40, 0x8000);
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adac_write_word(AC101_ADDR, 0x50, 0x3bc0);
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}
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if (mode == AC_MODULE_ADC || mode == AC_MODULE_ADC_DAC || mode == AC_MODULE_LINE) {
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// I2S1_SDOUT_CTRL
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// adac_write_word(AC101_ADDR, PLL_CTRL2, 0x8120);
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adac_write_word(AC101_ADDR, 0x04, 0x800c);
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adac_write_word(AC101_ADDR, 0x05, 0x800c);
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// res |= adac_write_word(AC101_ADDR, 0x06, 0x3000);
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}
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if (mode == AC_MODULE_DAC || mode == AC_MODULE_ADC_DAC || mode == AC_MODULE_LINE) {
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uint16_t value = adac_read_word(AC101_ADDR, PLL_CTRL2);
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value |= 0x8000;
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adac_write_word(AC101_ADDR, PLL_CTRL2, value);
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}
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}
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/****************************************************************************************
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*
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*/
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static void ac101_stop(void) {
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uint16_t value = adac_read_word(AC101_ADDR, PLL_CTRL2);
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value &= ~0x8000;
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adac_write_word(AC101_ADDR, PLL_CTRL2, value);
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}
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