3 files changed, 25 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c
index 27de8015717d..1567fe209e01 100644
--- a/sound/pci/hda/hda_controller.c
+++ b/sound/pci/hda/hda_controller.c
@@ -412,6 +412,11 @@ static int azx_pcm_open(struct snd_pcm_substream *substream)
 		goto unlock;
 	}
 	runtime->private_data = azx_dev;
+
+	if (chip->gts_present)
+		azx_pcm_hw.info = azx_pcm_hw.info |
+			SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME;
+
 	runtime->hw = azx_pcm_hw;
 	runtime->hw.channels_min = hinfo->channels_min;
 	runtime->hw.channels_max = hinfo->channels_max;
diff --git a/sound/pci/hda/hda_controller.h b/sound/pci/hda/hda_controller.h
index ec63bbf1ec6d..a50e0532622a 100644
--- a/sound/pci/hda/hda_controller.h
+++ b/sound/pci/hda/hda_controller.h
@@ -159,6 +159,9 @@ struct azx {
 	unsigned int region_requested:1;
 	unsigned int disabled:1; /* disabled by vga_switcheroo */
 
+	/* GTS present */
+	unsigned int gts_present:1;
+
 #ifdef CONFIG_SND_HDA_DSP_LOADER
 	struct azx_dev saved_azx_dev;
 #endif
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 89dacf9b4e6c..4786f435eb64 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -54,6 +54,7 @@
 /* for snoop control */
 #include <asm/pgtable.h>
 #include <asm/cacheflush.h>
+#include <asm/cpufeature.h>
 #endif
 #include <sound/core.h>
 #include <sound/initval.h>
@@ -1655,6 +1656,22 @@ static int azx_first_init(struct azx *chip)
 		return -ENXIO;
 	}
 
+	if (IS_SKL_PLUS(pci))
+		snd_hdac_bus_parse_capabilities(bus);
+
+	/*
+	 * Some Intel CPUs has always running timer (ART) feature and
+	 * controller may have Global time sync reporting capability, so
+	 * check both of these before declaring synchronized time reporting
+	 * capability SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME
+	 */
+	chip->gts_present = false;
+
+#ifdef CONFIG_X86
+	if (bus->ppcap && boot_cpu_has(X86_FEATURE_ART))
+		chip->gts_present = true;
+#endif
+
 	if (chip->msi) {
 		if (chip->driver_caps & AZX_DCAPS_NO_MSI64) {
 			dev_dbg(card->dev, "Disabling 64bit MSI\n");