emu10k1: difference between _fx8010_ and _efx_

[Lee Revell <rlrevell@joe-job.com>]

Hey,

I have been looking at the emu10k1 driver source and am confused about 
the use of _fx8010_ and _efx_ in variable names.  The FX8010 is the 
DSP used for hardware "efx" in the EMU10K1.  Can someone clarify the 
distinction?

It seems like these are almost used interchangable in some places, but 
I am sure there are important distinctions.

I have heard that these devices have something to do with AC3 
passthrough.

Here is an example from emupcm.c:

int __devinit snd_emu10k1_pcm_efx(emu10k1_t * emu, int device, snd_pcm_t
** rpcm)
{
        snd_pcm_t *pcm;
        int err;

        if (rpcm)
                *rpcm = NULL;

        if ((err = snd_pcm_new(emu->card, "emu10k1 efx", device, 8, 1,
&pcm)) < 0)
                return err;

        pcm->private_data = emu;
        pcm->private_free = snd_emu10k1_pcm_efx_free;

        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
&snd_emu10k1_fx8010_playback_ops);
        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
&snd_emu10k1_capture_efx_ops);


Lee



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