116 lines
2.9 KiB
C
116 lines
2.9 KiB
C
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#include <xs1.h>
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#define __ASSEMBLER__ // Work around for bug #14118
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#include <platform.h>
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#undef __ASSEMBLER__
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#include "devicedefines.h"
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#include "audioports.h"
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#if (DSD_CHANS_DAC != 0)
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/* Note since DSD ports could be reused for I2S ports we do all the setup manually in C */
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#if DSD_CHANS_DAC > 0
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port p_dsd_dac[DSD_CHANS_DAC] = {
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PORT_DSD_DAC0,
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#endif
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#if DSD_CHANS_DAC > 1
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PORT_DSD_DAC1,
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#endif
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#if DSD_CHANS_DAC > 2
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#error > 2 DSD chans currently not supported
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#endif
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#if DSD_CHANS_DAC > 0
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};
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port p_dsd_clk = PORT_DSD_CLK;
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#endif
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static inline void EnableBufferedPort(port p, unsigned transferWidth)
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{
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//set_port_use_on(p_dsd_dac[i]);
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asm volatile("setc res[%0], %1"::"r"(p), "r"(XS1_SETC_INUSE_ON));
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asm volatile("setc res[%0], %1"::"r"(p), "r"(XS1_SETC_BUF_BUFFERS));
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asm volatile("settw res[%0], %1"::"r"(p),"r"(transferWidth));
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}
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/* C wrapper for ConfigAudioPorts() such that we can mess around with arrays of ports */
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void ConfigAudioPortsWrapper(
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#if (I2S_CHANS_DAC != 0)
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port p_i2s_dac[I2S_WIRES_DAC],
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#endif
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#if (I2S_CHANS_ADC != 0)
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port p_i2s_adc[I2S_WIRES_ADC],
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#endif
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#if (I2S_CHANS_DAC != 0) || (I2S_CHANS_ADC != 0)
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#ifndef CODEC_MASTER
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port p_lrclk,
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port p_bclk,
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#else
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in port p_lrclk,
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in port p_bclk,
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#endif
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#endif
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unsigned int divide, unsigned int dsdMode)
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{
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/* Ensure dsd clock is on in all modes since I2S mode sets it low on exit
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* to avoid stop_clock() potentially pausing forever. If this is not done
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* an exception will be raised with audio() attempts to set this port low
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*/
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/* TODO Do we really need to do this on every SF change? Once is probably enough */
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EnableBufferedPort(p_dsd_clk, 32);
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if(dsdMode)
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{
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/* Make sure the ports are on and buffered - just in case they are not shared with I2S */
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for(int i = 0; i< DSD_CHANS_DAC; i++)
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{
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EnableBufferedPort(p_dsd_dac[i], 32);
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}
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ConfigAudioPorts(
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#if (DSD_CHANS_DAC != 0)
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p_dsd_dac,
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DSD_CHANS_DAC,
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#endif
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#if (I2S_CHANS_ADC != 0)
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p_i2s_adc,
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I2S_WIRES_ADC,
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#endif
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#if (I2S_CHANS_DAC != 0) || (I2S_CHANS_ADC != 0)
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#ifndef CODEC_MASTER
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0, /* NULL */
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p_dsd_clk,
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#else
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0, /* NULL */
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p_dsd_clk,
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#endif
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#endif
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divide);
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}
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else
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{
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ConfigAudioPorts(
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#if (I2S_CHANS_DAC != 0)
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p_i2s_dac,
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I2S_WIRES_DAC,
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#endif
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#if (I2S_CHANS_ADC != 0)
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p_i2s_adc,
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I2S_WIRES_ADC,
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#endif
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#if (I2S_CHANS_DAC != 0) || (I2S_CHANS_ADC != 0)
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#ifndef CODEC_MASTER
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p_lrclk,
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p_bclk,
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#else
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p_lrclk,
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p_bclk,
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#endif
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#endif
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divide);
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}
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}
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#endif
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