Re: [Openvortex-dev] SPDIF first mile stone.

[Erik Gustavsson]

It works!

None of the mixer controls seem to have any effect though, except the
EQ. 

I changed this in vortex_connect_codecplay():

    vortex_route(vortex, en, 0x11, ADB_EQOUT(0), 0x92);
    vortex_route(vortex, en, 0x11, ADB_EQOUT(1), 0x93);

/cyr

On Wed, 2003-09-10 at 06:53, Manuel Jander wrote:
> Hi everyone,
> 
> I think i got something SPDIF'ish out of my MX300. There was some more
> work to be done, i didn't expected, but finally, i got a digital (TTL)
> signal that changes according to the audio output.
> 
> Below is the function i hacked to bring the SPDIF port to life. After
> that (hooked into vortex_hw_init), all that is needed to be done is to
> route audio to ADB addresses 0x92 and 0x93.
> 
> I'll try to integrate SPDIF as a separate ALSA PCM device for easier
> usage. Stay tuned :)
> 
> void vortex_spdif_init(vortex_t *vortex) {
>       int i, spdif_sr=48000, spdif_mode=1, this_38 = 0, this_04=0, this_08=0,
> this_0c=0;
>       
>       /* CAsp4Spdif::InitializeSpdifHardware(void) */
>       hwwrite(vortex->mmio, 0x2205c, hwread(vortex->mmio, 0x2205c) &
> 0xfff3fffd);
>       for (i=0x291D4; i<0x29200; i+=4)
>               hwwrite(vortex->mmio, i, 0);
>       hwwrite(vortex->mmio, 0x29190, hwread(vortex->mmio, 0x29190) |
> 0xc0000);
>       //hwwrite(vortex->mmio, 0x29190, hwread(vortex->mmio, 0x29190) |
> EN_SPDIF);
>               
>       /* CAsp4Spdif::ProgramSRCInHardware(enum  SPDIF_SR,enum  SPDIFMODE) */
>       if (this_04 && this_08) {
>               int edi;
>               
>               i = (((0x5DC00000 / spdif_sr) + 1) >> 1);
>               if (i > 0x800) {
>                       if (i < 0x1ffff)
>                               edi = (i >> 1);
>                       else 
>                               edi = 0x1ffff;
>               } else {
>                       i = edi = 0x800;
>               }
>               /* this_04 and this_08 are the CASp4Src's (samplerate 
> converters) */
>               vortex_src_setupchannel(vortex, this_04, edi, 0, 1, this_0c, 1, 
> 0,
> edi, 1);
>               vortex_src_setupchannel(vortex, this_08, edi, 0, 1, this_0c, 1, 
> 0,
> edi, 1);
>       }
>       i = spdif_sr;
>       spdif_sr |= 0x8c;
>       switch (i) {
>               case 32000:
>                       this_38 &= 0xFFFFFFFE;
>                       this_38 &= 0xFFFFFFFD;
>                       this_38 &= 0xF3FFFFFF;
>                       this_38 |= 0x03000000;
>                       this_38 &= 0xFFFFFF3F;
>                       spdif_sr &= 0xFFFFFFFD;
>                       spdif_sr |= 1;
>                       break;
>               case 44100:
>                       this_38 &= 0xFFFFFFFE;
>                       this_38 &= 0xFFFFFFFD;
>                       this_38 &= 0xF0FFFFFF;
>                       this_38 |= 0x03000000;
>                       this_38 &= 0xFFFFFF3F;
>                       spdif_sr &= 0xFFFFFFFC;
>                       break;
>               case 48000:
>                       if (spdif_mode == 1) {
>                               this_38 &= 0xFFFFFFFE;
>                               this_38 &= 0xFFFFFFFD;
>                               this_38 &= 0xF2FFFFFF;
>                               this_38 |= 0x02000000;
>                               this_38 &= 0xFFFFFF3F;
>                       } else {
>                               this_38 |= 0x00000003;
>                               this_38 &= 0xFFFFFFBF;
>                               this_38 |= 0x80;
>                       }
>                       spdif_sr |= 2;
>                       spdif_sr &= 0xFFFFFFFE;
>                       break;
>               
>       }
>       hwwrite(vortex->mmio, 0x291D0, this_38 & 0xffff);
>       hwwrite(vortex->mmio, 0x291D4, this_38 >> 0x10);
>       hwwrite(vortex->mmio, 0x29194, spdif_sr);
> }
> 
> 
> 
> 
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