Hi, Robert Thank you for reply. We will test VT18128S S/PDIF function later. About 48 kHz sample rate limit, it is set for HW's stable work. Other sample rate can also work, if you need them just ignore this patch.

On Tue, Oct 6, 2009 at 9:42 AM, Robert Hancock hancockrwd@gmail.com wrote:

On Mon, Oct 5, 2009 at 7:15 AM, Li Bo liboat@gmail.com wrote:

...

Hi!

Following are a series of patches for patch_via.c, started from git clone of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 recently.

Please have a review and give comments, thank you!

Outlook Access Web cannot send plain-text mail, so my gmail is used instead. You can also contact with me with LoganLi@viatech.com.cn, or mail to HaraldWelte@viatech.com and lydiawang@viatech.com.cn.

OK, I just tried this patchset on my Asus P7P55D PRO (VIA VT1828S). Good news is that the analog 5.1 output and microphone input appear to work fine. However I am getting no output on SPDIF optical output at all, the jack doesn't even light up which suggests that the codec isn't powering on the SPDIF port, or something like that.

I've seen a few of these messages in dmesg while poking around with things, they may or may not be related:

ALSA sound/pci/hda/hda_intel.c:683: No response from codec, disabling MSI: last cmd=0x01ef0100 ALSA sound/pci/hda/hda_intel.c:698: azx_get_response timeout, switching to polling mode: last cmd=0x01ef0100

ALSA sound/pci/hda/hda_intel.c:683: No response from codec, disabling MSI: last cmd=0x024f0900 ALSA sound/pci/hda/hda_intel.c:698: azx_get_response timeout, switching to polling mode: last cmd=0x024f0900

ALSA sound/pci/hda/hda_intel.c:683: No response from codec, disabling MSI: last cmd=0x021f0200 ALSA sound/pci/hda/hda_intel.c:698: azx_get_response timeout, switching to polling mode: last cmd=0x021f0200

I also tested in Windows and SPDIF output works (obviously) with rates up to 192KHz, so I'm not sure why this patch set limits it to 48KHz only..