FreeCalypso > hg > ffs-data-bundle

annotate aud-c139/headset.src @ 6:cd0641c3611a

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add README
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 06 Apr 2022 05:26:36 +0000
parents e1878231dbcd
children
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e1878231dbcd aud-c139: preliminary version
Mychaela Falconia <falcon@freecalypso.org>
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1 # C139 headset audio mode, reconstructed from register readings
e1878231dbcd aud-c139: preliminary version
Mychaela Falconia <falcon@freecalypso.org>
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2 # collected in freecalypso-reveng repository, compal/audio directory
e1878231dbcd aud-c139: preliminary version
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3
e1878231dbcd aud-c139: preliminary version
Mychaela Falconia <falcon@freecalypso.org>
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4 mic headset {
e1878231dbcd aud-c139: preliminary version
Mychaela Falconia <falcon@freecalypso.org>
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5 gain 9 # read out via omr in active call state
e1878231dbcd aud-c139: preliminary version
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6 output-bias 0 # C139 uses 2.0V
e1878231dbcd aud-c139: preliminary version
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7 }
e1878231dbcd aud-c139: preliminary version
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e1878231dbcd aud-c139: preliminary version
Mychaela Falconia <falcon@freecalypso.org>
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9 # C139 fw applies complex volume control: it messes with PGA settings,
e1878231dbcd aud-c139: preliminary version
Mychaela Falconia <falcon@freecalypso.org>
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10 # and in headset mode it also applies a FIR filter that produces a 6 dB
e1878231dbcd aud-c139: preliminary version
Mychaela Falconia <falcon@freecalypso.org>
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11 # digital gain without any frequency curve transformation.
e1878231dbcd aud-c139: preliminary version
Mychaela Falconia <falcon@freecalypso.org>
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12 #
e1878231dbcd aud-c139: preliminary version
Mychaela Falconia <falcon@freecalypso.org>
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13 # For FreeCalypso, given how far we are from actually using the headset jack
e1878231dbcd aud-c139: preliminary version
Mychaela Falconia <falcon@freecalypso.org>
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14 # on C139 for its headset function (as opposed to the serial port),
e1878231dbcd aud-c139: preliminary version
Mychaela Falconia <falcon@freecalypso.org>
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15 # we are going to start with PGA at 0 and no weird FIR.
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e1878231dbcd aud-c139: preliminary version
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17 speaker headset {
e1878231dbcd aud-c139: preliminary version
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18 gain 0
e1878231dbcd aud-c139: preliminary version
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19 }
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e1878231dbcd aud-c139: preliminary version
Mychaela Falconia <falcon@freecalypso.org>
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21 sidetone -23 # readout of VBUCTRL from official fw
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e1878231dbcd aud-c139: preliminary version
Mychaela Falconia <falcon@freecalypso.org>
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23 # C139 AEC config for headset mode
e1878231dbcd aud-c139: preliminary version
Mychaela Falconia <falcon@freecalypso.org>
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24 aec-new 2 1 0x14 0x4CCC 0x59AD 0x7500 0 0x1000 0x1000 0 4 0x20