Status of ALi5451(trident)?

[Neale Banks <neale@lowendale.com.au>]

Greetings,

What is the status (e.g. supposedly working, supported and maintained?)
of the Trident driver with the Ali5451 chipset (both regular audio and
MIDI synth)?

Issues I have on the Toshiba Satellite 1800[1] include:

1) not working[2] with 2.2.21
2) MIDI not working with 2.2.21 or 2.4.18
3) MIDI code appears to be removed in 2.4.17 source (is this a sign?)
4) Lack of findable documentation on what's supposed to work and how (yes,
I'm prepared to collate something for linux/Documentation/sound/)

Thanks,
Neale.

[1] The Toshi 1800's lspci -v output includes:

00:06.0 Multimedia audio controller: Acer Laboratories Inc. [ALi] M5451 PCI South Bridge Audio (rev 01)
        Subsystem: Toshiba America Info Systems: Unknown device 0001
        Flags: bus master, medium devsel, latency 64, IRQ 11
        I/O ports at ed00
        Memory at f7efe000 (32-bit, non-prefetchable)
        Capabilities: [dc] Power Management version 2

[2] OK, "not working" isn't really a proper report.  I get this logged
when something tries to open the audio:

kernel: trident: drain_dac, dma timeout?

What else should I be reporting about this?