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ALSA: hda - Limit codec-verb retry to limited hardwares

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The reset of a BUS controller during operations is somehow risky and
shouldn't be done inevitably for devices that have apparently no such
codec-communication problems.

This patch adds the check of the hardware and limits the bus-reset
capability.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2009-06-02 01:20:22 +02:00
parent 8dd783304e
commit b20f3b8346
4 changed files with 15 additions and 11 deletions
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9
sound/pci/hda/patch_sigmatel.c
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@@ -5375,6 +5375,15 @@ again:
if (get_wcaps(codec, 0xa) & AC_WCAP_IN_AMP)
snd_hda_sequence_write_cache(codec, unmute_init);
/* Some HP machines seem to have unstable codec communications
* especially with ATI fglrx driver. For recovering from the
* CORB/RIRB stall, allow the BUS reset and keep always sync
*/
if (spec->board_config == STAC_HP_DV5) {
codec->bus->sync_write = 1;
codec->bus->allow_bus_reset = 1;
}
spec->aloopback_ctl = stac92hd71bxx_loopback;
spec->aloopback_mask = 0x50;
spec->aloopback_shift = 0;