[alsa-devel] Aureal issues on resume

[Raymond Yau]

2011/9/2 Clemens Ladisch <clemens at ladisch.de>:
> (added recipients)
>
> -------- Original Message --------
> Subject: Aureal issues on resume
> Date: Fri, 02 Sep 2011 13:41:42 +0200
> From: Anders Eriksson <aeriksson at fastmail.fm>
> To: linux-kernel at vger.kernel.org, linux-sound at vger.kernel.org
>
>
> Hi, upon resuming from hibernation, I see this in my log:
>
> Sep  2 11:15:20 tippex kernel: [72436.287020] vortex_adb_addroutes: unending route! 0x10
> Sep  2 11:15:20 tippex kernel: [72436.287127] vortex_adb_addroutes: unending route! 0x838
> Sep  2 11:15:20 tippex kernel: [72436.287277] vortex_adb_addroutes: unending route! 0x11
> Sep  2 11:15:20 tippex kernel: [72436.287418] vortex_adb_addroutes: unending route! 0x8b9
> Sep  2 11:15:20 tippex kernel: [72436.292037] Vortex: vortex_fifo_setadbctrl fail
> Sep  2 11:15:55 tippex kernel: [72471.403490] vortex_adb_delroutes: route not found! 0x10
> Sep  2 11:15:55 tippex kernel: [72471.403596] vortex_adb_delroutes: route not found! 0x838
> Sep  2 11:15:55 tippex kernel: [72471.403710] vortex_adb_delroutes: route not found! 0x11
> Sep  2 11:15:55 tippex kernel: [72471.403811] vortex_adb_delroutes: route not found! 0x8b9
>
> And the sound is no more. I need to reboot to get it back.
>
> If memory serves, it's been there since 2.6.30 or so. Any ideas what can be
> triggering it?
>
> lspci says it's an
> 00:04.0 Multimedia audio controller: Aureal Semiconductor Vortex 1 (rev 02)
>        Subsystem: Diamond Multimedia Systems Sonic Impact A3D
>        Flags: bus master, medium devsel, latency 64, IRQ 11
>        Memory at 50000000 (32-bit, non-prefetchable) [size=128K]
>        I/O ports at 10b0 [size=8]
>        I/O ports at 10b8 [size=8]
>        Capabilities: [dc] Power Management version 1
>        Kernel driver in use: snd_au8820
>        Kernel modules: snd-au8820
>
>
> -Anders
>

Those alsa au88x0 drivers does not support suspend/resume

As each audio stream is assigned different resources (e.g. SRC, mixer
, ...) dynamically and the cards can play 16 mono streams or 8 stereo
streams.

The possible way is to save the contents of 128K memory mapped I/O
ports before suspend to non-volatile memory and restore them after
resume

Is there any way for alsa driver to allocate non-volatile memory ?
au8830 has 256 K mmio