667 static esp_err_t i2s_calculate_adc_dac_clock(int i2s_num, i2s_hal_clock_info_t *clk_info)  in i2s_calculate_adc_dac_clock()  argument
676     clk_info->bclk = clk_cfg->sample_rate_hz * I2S_LL_AD_BCK_FACTOR;  in i2s_calculate_adc_dac_clock()
678     clk_info->bclk_div = slot_bits;  in i2s_calculate_adc_dac_clock()
680     clk_info->mclk = (p_i2s[i2s_num]->use_apll && p_i2s[i2s_num]->fixed_mclk) ?  in i2s_calculate_adc_dac_clock()
681                      p_i2s[i2s_num]->fixed_mclk : clk_info->bclk * clk_info->bclk_div;  in i2s_calculate_adc_dac_clock()
683     clk_info->bclk_div = clk_info->mclk / clk_info->bclk;  in i2s_calculate_adc_dac_clock()
685     clk_info->sclk = i2s_config_source_clock(i2s_num, p_i2s[i2s_num]->use_apll, clk_info->mclk);  in i2s_calculate_adc_dac_clock()
687     clk_info->mclk_div = clk_info->sclk / clk_info->mclk;  in i2s_calculate_adc_dac_clock()
690 …ESP_RETURN_ON_FALSE(clk_info->sclk / (float)clk_info->mclk > 1.99, ESP_ERR_INVALID_ARG, TAG, "samp…  in i2s_calculate_adc_dac_clock()
691 …ESP_RETURN_ON_FALSE(clk_info->mclk_div < 256, ESP_ERR_INVALID_ARG, TAG, "sample rate is too small,…  in i2s_calculate_adc_dac_clock()
698 static esp_err_t i2s_calculate_pdm_tx_clock(int i2s_num, i2s_hal_clock_info_t *clk_info)  in i2s_calculate_pdm_tx_clock()  argument
705     clk_info->bclk = clk_cfg->sample_rate_hz * I2S_LL_PDM_BCK_FACTOR * fp / fs;  in i2s_calculate_pdm_tx_clock()
707     clk_info->bclk_div = 8;  in i2s_calculate_pdm_tx_clock()
709     clk_info->mclk = (p_i2s[i2s_num]->use_apll && p_i2s[i2s_num]->fixed_mclk) ?  in i2s_calculate_pdm_tx_clock()
710                      p_i2s[i2s_num]->fixed_mclk : clk_info->bclk * clk_info->bclk_div;  in i2s_calculate_pdm_tx_clock()
712     clk_info->bclk_div = clk_info->mclk / clk_info->bclk;  in i2s_calculate_pdm_tx_clock()
714     clk_info->sclk = i2s_config_source_clock(i2s_num, p_i2s[i2s_num]->use_apll, clk_info->mclk);  in i2s_calculate_pdm_tx_clock()
716     clk_info->mclk_div = clk_info->sclk / clk_info->mclk;  in i2s_calculate_pdm_tx_clock()
719 …ESP_RETURN_ON_FALSE(clk_info->sclk / (float)clk_info->mclk > 1.99, ESP_ERR_INVALID_ARG, TAG, "samp…  in i2s_calculate_pdm_tx_clock()
720 …ESP_RETURN_ON_FALSE(clk_info->mclk_div < 256, ESP_ERR_INVALID_ARG, TAG, "sample rate is too small,…  in i2s_calculate_pdm_tx_clock()
727 static esp_err_t i2s_calculate_pdm_rx_clock(int i2s_num, i2s_hal_clock_info_t *clk_info)  in i2s_calculate_pdm_rx_clock()  argument
732 …clk_info->bclk = clk_cfg->sample_rate_hz * I2S_LL_PDM_BCK_FACTOR * (dsr == I2S_PDM_DSR_16S ? 2 : 1…  in i2s_calculate_pdm_rx_clock()
734     clk_info->bclk_div = 8;  in i2s_calculate_pdm_rx_clock()
736     clk_info->mclk = (p_i2s[i2s_num]->use_apll && p_i2s[i2s_num]->fixed_mclk) ?  in i2s_calculate_pdm_rx_clock()
737                      p_i2s[i2s_num]->fixed_mclk : clk_info->bclk * clk_info->bclk_div;  in i2s_calculate_pdm_rx_clock()
739     clk_info->bclk_div = clk_info->mclk / clk_info->bclk;  in i2s_calculate_pdm_rx_clock()
741     clk_info->sclk = i2s_config_source_clock(i2s_num, p_i2s[i2s_num]->use_apll, clk_info->mclk);  in i2s_calculate_pdm_rx_clock()
743     clk_info->mclk_div = clk_info->sclk / clk_info->mclk;  in i2s_calculate_pdm_rx_clock()
746 …ESP_RETURN_ON_FALSE(clk_info->sclk / (float)clk_info->mclk > 1.99, ESP_ERR_INVALID_ARG, TAG, "samp…  in i2s_calculate_pdm_rx_clock()
747 …ESP_RETURN_ON_FALSE(clk_info->mclk_div < 256, ESP_ERR_INVALID_ARG, TAG, "sample rate is too small,…  in i2s_calculate_pdm_rx_clock()
752 static esp_err_t i2s_calculate_common_clock(int i2s_num, i2s_hal_clock_info_t *clk_info)  in i2s_calculate_common_clock()  argument
761         clk_info->bclk = rate * slot_num * slot_bits;  in i2s_calculate_common_clock()
762         clk_info->mclk = rate * clk_cfg->mclk_multiple;  in i2s_calculate_common_clock()
763         clk_info->bclk_div = clk_info->mclk / clk_info->bclk;  in i2s_calculate_common_clock()
766         clk_info->bclk_div = 8;  in i2s_calculate_common_clock()
767         clk_info->bclk = rate * slot_num * slot_bits;  in i2s_calculate_common_clock()
768         clk_info->mclk = clk_info->bclk * clk_info->bclk_div;  in i2s_calculate_common_clock()
771     clk_info->sclk = i2s_config_source_clock(i2s_num, p_i2s[i2s_num]->use_apll, clk_info->mclk);  in i2s_calculate_common_clock()
773     clk_info->mclk_div = clk_info->sclk / clk_info->mclk;  in i2s_calculate_common_clock()
776 …ESP_RETURN_ON_FALSE(clk_info->mclk <= clk_info->sclk, ESP_ERR_INVALID_ARG, TAG, "sample rate is to…  in i2s_calculate_common_clock()
782 static esp_err_t i2s_calculate_clock(i2s_port_t i2s_num, i2s_hal_clock_info_t *clk_info)  in i2s_calculate_clock()  argument
787 …ESP_RETURN_ON_ERROR(i2s_calculate_adc_dac_clock(i2s_num, clk_info), TAG, "ADC/DAC clock calculate …  in i2s_calculate_clock()
797 …ESP_RETURN_ON_ERROR(i2s_calculate_pdm_tx_clock(i2s_num, clk_info), TAG, "PDM TX clock calculate fa…  in i2s_calculate_clock()
802 …ESP_RETURN_ON_ERROR(i2s_calculate_pdm_rx_clock(i2s_num, clk_info), TAG, "PDM RX clock calculate fa…  in i2s_calculate_clock()
810 …ESP_RETURN_ON_ERROR(i2s_calculate_common_clock(i2s_num, clk_info), TAG, "Common clock calculate fa…  in i2s_calculate_clock()
812 …           clk_info->sclk, clk_info->mclk, clk_info->mclk_div, clk_info->bclk, clk_info->bclk_div);  in i2s_calculate_clock()
1022     i2s_hal_clock_info_t clk_info;  in i2s_set_clock_legacy()  local
1023     i2s_calculate_clock(i2s_num, &clk_info);  in i2s_set_clock_legacy()
1025         i2s_hal_set_tx_clock(&(p_i2s[i2s_num]->hal), &clk_info, clk_cfg->clk_src);  in i2s_set_clock_legacy()
1028         i2s_hal_set_rx_clock(&(p_i2s[i2s_num]->hal), &clk_info, clk_cfg->clk_src);  in i2s_set_clock_legacy()