On Tue, 09 Apr 2019 11:54:27 +0200, Kailang wrote: > > Hi Takashi, > > https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/commit/?h=for-next&id=98081ca62cbac31fb0f7efaf90b2e7384ce22257 > > Use upper patch to print power state in function alc256_init() and alc256_shutup(). > But when kernel turn on power_save = 1. (echo 1 > /sys/module/snd_hda_intel/parameters/power_save) > > The print power state value always be 0x0. That's expected, it means PM_EVENT_ON. The power_state value is changed only during the suspend and resume. Once after returning from resume, it's set to PM_EVENT_ON. > ( If it turn off power save, power state value will normally) What does it mean exactly...? Actually one missing piece is to set PMSG_ON at the device initialization. A patch like below. thanks, Takashi --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -969,6 +969,7 @@ int snd_hda_codec_device_new(struct hda_bus *bus, struct snd_card *card, /* power-up all before initialization */ hda_set_power_state(codec, AC_PWRST_D0); + codec->core.dev.power.power_state = PMSG_ON; snd_hda_codec_proc_new(codec); _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
