diff options
| author | Takashi Iwai <tiwai@suse.de> | 2006-08-21 17:57:44 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2006-09-23 10:42:10 +0200 |
| commit | e96224ae974844d3f4e84f927ca4b17f1a2079a3 (patch) | |
| tree | 9b521d379b2ecae8506216ca5b11050d49046718 | |
| parent | [ALSA] hda-codec - Add support for new Intel boards with Stac9227 codec (diff) | |
| download | linux-e96224ae974844d3f4e84f927ca4b17f1a2079a3.tar.xz linux-e96224ae974844d3f4e84f927ca4b17f1a2079a3.zip | |
[ALSA] hda-intel - Switch to polling mode for CORB/RIRB communication
Automatically switch to polling mode for CORB/RIRB communication
if the irq-driven mode seems not working well. If the polling
mode still doesn't work, switch to single_cmd mode as fallback.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| -rw-r--r-- | sound/pci/hda/hda_intel.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 79d63c99f092..ce75e07aaa2a 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -332,6 +332,7 @@ struct azx { int position_fix; unsigned int initialized: 1; unsigned int single_cmd: 1; + unsigned int polling_mode: 1; }; /* driver types */ @@ -518,8 +519,23 @@ static unsigned int azx_rirb_get_response(struct hda_codec *codec) struct azx *chip = codec->bus->private_data; int timeout = 50; - while (chip->rirb.cmds) { + for (;;) { + if (chip->polling_mode) { + spin_lock_irq(&chip->reg_lock); + azx_update_rirb(chip); + spin_unlock_irq(&chip->reg_lock); + } + if (! chip->rirb.cmds) + break; if (! --timeout) { + if (! chip->polling_mode) { + snd_printk(KERN_WARNING "hda_intel: " + "azx_get_response timeout, " + "switching to polling mode...\n"); + chip->polling_mode = 1; + timeout = 50; + continue; + } snd_printk(KERN_ERR "hda_intel: azx_get_response timeout, " "switching to single_cmd mode...\n"); |