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Initial guarding of variable bit I2S modifications

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Ed
2019-08-23 16:11:48 +01:00
parent 7cae9c385c
commit be69d3468e
2 changed files with 73 additions and 2 deletions
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27
lib_xua/src/core/audiohub/audiohub_initport.xc
View File

@@ -39,7 +39,11 @@ void InitPorts_master(unsigned divide, buffered _XUA_CLK_DIR port:32 p_lrclk, bu
#pragma xta endpoint "divide_1"
unsigned tmp;
#ifdef N_BITS_I2S
tmp = partout_timestamped(p_lrclk, N_BITS_I2S, 0);
#else
p_lrclk <: 0 @ tmp;
#endif
tmp += 100;
/* Since BCLK is free-running, setup outputs/inputs at a known point in the future */
@@ -47,17 +51,28 @@ void InitPorts_master(unsigned divide, buffered _XUA_CLK_DIR port:32 p_lrclk, bu
#pragma loop unroll
for(int i = 0; i < I2S_WIRES_DAC; i++)
{
#ifdef N_BITS_I2S
partout_timed(p_i2s_dac[i], N_BITS_I2S, 0, tmp);
#else
p_i2s_dac[i] @ tmp <: 0;
#endif
}
#endif
#ifdef N_BITS_I2S
partout_timed(p_lrclk, N_BITS_I2S, 0x7FFFFFFF, tmp);
#else
p_lrclk @ tmp <: 0x7FFFFFFF;
#endif
#if (I2S_CHANS_ADC != 0)
for(int i = 0; i < I2S_WIRES_ADC; i++)
{
asm("setpt res[%0], %1"::"r"(p_i2s_adc[i]),"r"(tmp-1));
#ifdef N_BITS_I2S
set_port_shift_count(p_i2s_adc[i], N_BITS_I2S);
#endif
}
#endif
#endif /* (I2S_CHANS_ADC != 0 || I2S_CHANS_DAC != 0) */
@@ -92,7 +107,11 @@ void InitPorts_slave(unsigned divide, buffered _XUA_CLK_DIR port:32 p_lrclk, buf
p_lrclk when pinseq(0) :> void @ tmp;
#endif
#ifdef N_BITS_I2S
tmp += (I2S_CHANS_PER_FRAME * N_BITS_I2S) - N_BITS_I2S + 1 ;
#else
tmp += (I2S_CHANS_PER_FRAME * 32) - 32 + 1 ;
#endif
/* E.g. 2 * 32 - 32 + 1 = 33 for stereo */
/* E.g. 8 * 32 - 32 + 1 = 225 for 8 chan TDM */
@@ -100,7 +119,11 @@ void InitPorts_slave(unsigned divide, buffered _XUA_CLK_DIR port:32 p_lrclk, buf
#pragma loop unroll
for(int i = 0; i < I2S_WIRES_DAC; i++)
{
#ifdef N_BITS_I2S
partout_timed(p_i2s_dac[i], N_BITS_I2S, 0, tmp-1);
#else
p_i2s_dac[i] @ tmp <: 0;
#endif
}
#endif
@@ -109,12 +132,16 @@ void InitPorts_slave(unsigned divide, buffered _XUA_CLK_DIR port:32 p_lrclk, buf
for(int i = 0; i < I2S_WIRES_ADC; i++)
{
asm("setpt res[%0], %1"::"r"(p_i2s_adc[i]),"r"(tmp-1));
#ifdef N_BITS_I2S
set_port_shift_count(p_i2s_adc[i], N_BITS_I2S);
#endif
}
#endif
asm("setpt res[%0], %1"::"r"(p_lrclk),"r"(tmp-1));
#ifdef N_BITS_I2S
set_port_shift_count(p_lrclk, N_BITS_I2S);
#endif
#endif /* (I2S_CHANS_ADC != 0 || I2S_CHANS_DAC != 0) */
}
#endif

48
lib_xua/src/core/audiohub/xua_audiohub.xc
View File

@@ -160,10 +160,14 @@ static inline int HandleSampleClock(int frameCount, buffered _XUA_CLK_DIR port:3
#if CODEC_MASTER
unsigned syncError = 0;
unsigned lrval = 0;
const unsigned lrval_mask = (0xffffffff << (32 - N_BITS_I2S));
#ifdef N_BITS_I2S
const unsigned lrval_mask = (0xffffffff << (32 - N_BITS_I2S));
asm volatile("in %0, res[%1]":"=r"(lrval):"r"(p_lrclk):"memory");
set_port_shift_count(p_lrclk, N_BITS_I2S);
#else
p_lrclk :> lrval;
#endif
if(I2S_MODE_TDM)
{
@@ -181,20 +185,32 @@ static inline int HandleSampleClock(int frameCount, buffered _XUA_CLK_DIR port:3
}
else
{
if(frameCount == 0)
if(frameCount == 0)
#ifdef N_BITS_I2S
{
if ((lrval & lrval_mask) != 0x80000000)
{
syncError = 1;
}
}
#else
{
syncError += (lrval != 0x80000000);
}
#endif
else
#ifdef N_BITS_I2S
{
if ((lrval | (~lrval_mask)) != 0x7FFFFFFF)
{
syncError = 1;
}
}
#else
{
syncError += (lrval != 0x7FFFFFFF);
}
#endif
}
return syncError;
@@ -210,9 +226,17 @@ static inline int HandleSampleClock(int frameCount, buffered _XUA_CLK_DIR port:3
else
{
if(frameCount == 0)
#ifdef N_BITS_I2S
partout(p_lrclk, N_BITS_I2S, 0x80000000 >> (32 - N_BITS_I2S));
#else
p_lrclk <: 0x80000000;
#endif
else
#ifdef N_BITS_I2S
partout(p_lrclk, N_BITS_I2S, 0x7fffffff >> (32 - N_BITS_I2S));
#else
p_lrclk <: 0x7fffffff;
#endif
}
@@ -369,8 +393,12 @@ unsigned static AudioHub_MainLoop(chanend ?c_out, chanend ?c_spd_out
// Manual IN instruction since compiler generates an extra setc per IN (bug #15256)
unsigned sample;
asm volatile("in %0, res[%1]" : "=r"(sample) : "r"(p_i2s_adc[index++]));
#ifdef N_BITS_I2S
set_port_shift_count(p_i2s_adc[i], N_BITS_I2S);
sample = bitrev(sample) << (32 - N_BITS_I2S);
#else
sample = bitrev(sample);
#endif
int chanIndex = ((frameCount-2)&(I2S_CHANS_PER_FRAME-1))+i; // channels 0, 2, 4.. on each line.
#if (AUD_TO_USB_RATIO > 1)
@@ -423,7 +451,11 @@ unsigned static AudioHub_MainLoop(chanend ?c_out, chanend ?c_spd_out
src_ff3v_fir_coefs[2-audioToUsbRatioCounter]);
}
#endif /* (AUD_TO_USB_RATIO > 1) */
#ifdef N_BITS_I2SN
partout(p_i2s_dac[index++], N_BITS_I2S, bitrev(samplesOut[frameCount +i]));
#else
p_i2s_dac[index++] <: bitrev(samplesOut[frameCount +i]);
#endif
}
#endif // (I2S_CHANS_DAC != 0)
@@ -499,8 +531,12 @@ unsigned static AudioHub_MainLoop(chanend ?c_out, chanend ?c_spd_out
/* Manual IN instruction since compiler generates an extra setc per IN (bug #15256) */
unsigned sample;
asm volatile("in %0, res[%1]" : "=r"(sample) : "r"(p_i2s_adc[index++]));
#ifdef N_BITS_I2S
set_port_shift_count(p_i2s_adc[i], N_BITS_I2S);
sample = bitrev(sample) << (32 - N_BITS_I2S);
#else
sample = bitrev(sample);
#endif
int chanIndex = ((frameCount-2)&(I2S_CHANS_PER_FRAME-1))+i; // channels 1, 3, 5.. on each line.
#if (AUD_TO_USB_RATIO > 1 && !I2S_DOWNSAMPLE_MONO_IN)
@@ -552,7 +588,11 @@ unsigned static AudioHub_MainLoop(chanend ?c_out, chanend ?c_spd_out
src_ff3v_fir_coefs[2-audioToUsbRatioCounter]);
}
#endif /* (AUD_TO_USB_RATIO > 1) */
#ifdef N_BITS_I2S
partout(p_i2s_dac[index++], N_BITS_I2S, bitrev(samplesOut[frameCount + i]));
#else
p_i2s_dac[index++] <: bitrev(samplesOut[frameCount + i]);
#endif
}
#endif // (I2S_CHANS_DAC != 0)
@@ -775,8 +815,12 @@ void XUA_AudioHub(chanend ?c_aud, clock ?clk_audio_mclk, clock ?clk_audio_bclk,
#endif
#else
#ifndef N_BITS_I2S
/* I2S has 32 bits per sample. *2 as 2 channels */
unsigned numBits = 2 * 32;
#else
unsigned numBits = 2 * N_BITS_I2S;
#endif
#endif
#if (DSD_CHANS_DAC > 0)