pci: hda: Limit sleep time when codec is off

Limit sleep time to 10ms if none of the HDA pcm streams are
active. This will reduce suspend time for HDA when HDMI is
not connected.

Bug 200063987

Change-Id: I27a57486f51dd97dac18967e376c3c05ecd32539
Signed-off-by: Sumit Bhattacharya <sumitb@nvidia.com>
Reviewed-on: http://git-master/r/839657
Reviewed-by: Sanjay Singh Chauhan <schauhan@nvidia.com>
Reviewed-by: Ravindra Lokhande <rlokhande@nvidia.com>
GVS: Gerrit_Virtual_Submit

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 7461cdb7bc349ec3cd638d568f2af1d8752c5d7f..8eda032385a2db9bdde765a3a6b403b368eb2cf1 100644 (file)
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -3862,8 +3862,24 @@ static unsigned int hda_set_power_state(struct hda_codec *codec,
 
        /* this delay seems necessary to avoid click noise at power-down */
        if (power_state == AC_PWRST_D3) {
+#ifndef CONFIG_SND_HDA_PLATFORM_NVIDIA_TEGRA
                /* transition time less than 10ms for power down */
                msleep(codec->epss ? 10 : 100);
+#else
+               int pcm, hda_active = 0;
+
+               for (pcm = 0; pcm < codec->num_pcms; pcm++) {
+                       struct hda_pcm *cpcm = &codec->pcm_info[pcm];
+                       if (!cpcm->pcm)
+                               continue;
+                       if (cpcm->pcm->streams[0].substream_opened ||
+                           cpcm->pcm->streams[1].substream_opened) {
+                               hda_active = 1;
+                               break;
+                       }
+               }
+               msleep(codec->epss || !hda_active ? 10 : 100);
+#endif
        }
 
        /* repeat power states setting at most 10 times*/