4.4-stable review patch. If anyone has any objections, please let me know.
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From: Takashi Iwai tiwai@suse.de
commit 98081ca62cbac31fb0f7efaf90b2e7384ce22257 upstream.
Currently we deal with single codec and suspend codec callbacks for all S3, S4 and runtime PM handling. But it turned out that we want distinguish the call patterns sometimes, e.g. for applying some init sequence only at probing and restoring from hibernate.
This patch slightly modifies the common PM callbacks for HD-audio codec and stores the currently processed PM event in power_state of the codec's device.power field, which is currently unused. The codec callback can take a look at this event value and judges which purpose it's being called.
Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- sound/pci/hda/hda_codec.c | 43 +++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 41 insertions(+), 2 deletions(-)
--- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -3004,6 +3004,7 @@ static void hda_call_codec_resume(struct hda_jackpoll_work(&codec->jackpoll_work.work); else snd_hda_jack_report_sync(codec); + codec->core.dev.power.power_state = PMSG_ON; atomic_dec(&codec->core.in_pm); }
@@ -3036,10 +3037,48 @@ static int hda_codec_runtime_resume(stru } #endif /* CONFIG_PM */
+#ifdef CONFIG_PM_SLEEP +static int hda_codec_pm_suspend(struct device *dev) +{ + dev->power.power_state = PMSG_SUSPEND; + return pm_runtime_force_suspend(dev); +} + +static int hda_codec_pm_resume(struct device *dev) +{ + dev->power.power_state = PMSG_RESUME; + return pm_runtime_force_resume(dev); +} + +static int hda_codec_pm_freeze(struct device *dev) +{ + dev->power.power_state = PMSG_FREEZE; + return pm_runtime_force_suspend(dev); +} + +static int hda_codec_pm_thaw(struct device *dev) +{ + dev->power.power_state = PMSG_THAW; + return pm_runtime_force_resume(dev); +} + +static int hda_codec_pm_restore(struct device *dev) +{ + dev->power.power_state = PMSG_RESTORE; + return pm_runtime_force_resume(dev); +} +#endif /* CONFIG_PM_SLEEP */ + /* referred in hda_bind.c */ const struct dev_pm_ops hda_codec_driver_pm = { - SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, - pm_runtime_force_resume) +#ifdef CONFIG_PM_SLEEP + .suspend = hda_codec_pm_suspend, + .resume = hda_codec_pm_resume, + .freeze = hda_codec_pm_freeze, + .thaw = hda_codec_pm_thaw, + .poweroff = hda_codec_pm_suspend, + .restore = hda_codec_pm_restore, +#endif /* CONFIG_PM_SLEEP */ SET_RUNTIME_PM_OPS(hda_codec_runtime_suspend, hda_codec_runtime_resume, NULL) };