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Commit fb8d1a34 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: hda - Add reboot notifier to each codec 

Add reboot notifier to each codec so that it can do some workarounds
needed for reboot.

So far, patch_sigmatel.c calls its shutup routine for avoiding noises
at reboot on some HP machines.

References: Novell bnc#544779
	http://bugzilla.novell.com/show_bug.cgi?id=544779



Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 167eae5a

sound/pci/hda/hda_codec.c

+17 −0
Original line number Diff line number Diff line
@@ -3404,6 +3404,23 @@ static void cleanup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid) 
	}

}



/* call each reboot notifier */

void snd_hda_bus_reboot_notify(struct hda_bus *bus)

{

	struct hda_codec *codec;



	if (!bus)

		return;

	list_for_each_entry(codec, &bus->codec_list, list) {

#ifdef CONFIG_SND_HDA_POWER_SAVE

		if (!codec->power_on)

			continue;

#endif

		if (codec->patch_ops.reboot_notify)

			codec->patch_ops.reboot_notify(codec);

	}

}



/*

 * open the digital out in the exclusive mode

 */

sound/pci/hda/hda_codec.h

+2 −0
Original line number Diff line number Diff line
@@ -674,6 +674,7 @@ struct hda_codec_ops { 
#ifdef CONFIG_SND_HDA_POWER_SAVE

	int (*check_power_status)(struct hda_codec *codec, hda_nid_t nid);

#endif

	void (*reboot_notify)(struct hda_codec *codec);

};



/* record for amp information cache */
@@ -910,6 +911,7 @@ int snd_hda_is_supported_format(struct hda_codec *codec, hda_nid_t nid, 
 * Misc

 */

void snd_hda_get_codec_name(struct hda_codec *codec, char *name, int namelen);

void snd_hda_bus_reboot_notify(struct hda_bus *bus);



/*

 * power management

sound/pci/hda/hda_intel.c

+1 −0
Original line number Diff line number Diff line
@@ -2150,6 +2150,7 @@ static int azx_resume(struct pci_dev *pci) 
static int azx_halt(struct notifier_block *nb, unsigned long event, void *buf)

{

	struct azx *chip = container_of(nb, struct azx, reboot_notifier);

	snd_hda_bus_reboot_notify(chip->bus);

	azx_stop_chip(chip);

	return NOTIFY_OK;

}

sound/pci/hda/patch_sigmatel.c

+1 −0
Original line number Diff line number Diff line
@@ -4831,6 +4831,7 @@ static struct hda_codec_ops stac92xx_patch_ops = { 
	.suspend = stac92xx_suspend,

	.resume = stac92xx_resume,

#endif

	.reboot_notify = stac92xx_shutup,

};



static int patch_stac9200(struct hda_codec *codec)