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authorTakashi Iwai <tiwai@suse.de>2017-02-21 22:18:57 +0100
committerTakashi Iwai <tiwai@suse.de>2017-02-21 22:23:14 +0100
commit0b6b524f3915f88eb4562e8d927528224a8eab41 (patch)
treea1802ed785fafbddf1dcf61b1260f80b1a256156 /sound/x86
parent3002b9fb7cbc26e8d29927c9e20e235f38319b24 (diff)
downloadlinux-stericsson-0b6b524f3915f88eb4562e8d927528224a8eab41.tar.gz
ALSA: x86: Don't enable runtime PM as default
Unlike HSW and newer, BYT/CHT devices have no fine control of audio power domain in i915 side. Since there is little gain by runtime PM on BYT/CHT, so far, this commit removes the pm_runtime_enable() call as default. User who still wants the runtime PM may adjust the corresponding sysfs files (power/control and power/autosuspend_delay_ms) appropriately, of course. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/x86')
-rw-r--r--sound/x86/intel_hdmi_audio.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c
index d1504303adfb..c505b019e09c 100644
--- a/sound/x86/intel_hdmi_audio.c
+++ b/sound/x86/intel_hdmi_audio.c
@@ -1809,11 +1809,13 @@ static int hdmi_lpe_audio_probe(struct platform_device *pdev)
pdata->notify_pending = false;
spin_unlock_irq(&pdata->lpe_audio_slock);
+ /* runtime PM isn't enabled as default, since it won't save much on
+ * BYT/CHT devices; user who want the runtime PM should adjust the
+ * power/ontrol and power/autosuspend_delay_ms sysfs entries instead
+ */
pm_runtime_use_autosuspend(&pdev->dev);
pm_runtime_mark_last_busy(&pdev->dev);
-
pm_runtime_set_active(&pdev->dev);
- pm_runtime_enable(&pdev->dev);
dev_dbg(&pdev->dev, "%s: handle pending notification\n", __func__);
schedule_work(&ctx->hdmi_audio_wq);