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-rw-r--r--sound/hda/ext/hdac_ext_controller.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/sound/hda/ext/hdac_ext_controller.c b/sound/hda/ext/hdac_ext_controller.c
index 72774119dd11..5bc4a1d587d4 100644
--- a/sound/hda/ext/hdac_ext_controller.c
+++ b/sound/hda/ext/hdac_ext_controller.c
@@ -271,6 +271,15 @@ int snd_hdac_ext_bus_link_get(struct hdac_bus *bus,
}
ret = snd_hdac_ext_bus_link_power_up(link);
+
+ /*
+ * wait for 521usec for codec to report status
+ * HDA spec section 4.3 - Codec Discovery
+ */
+ udelay(521);
+ bus->codec_mask = snd_hdac_chip_readw(bus, STATESTS);
+ dev_dbg(bus->dev, "codec_mask = 0x%lx\n", bus->codec_mask);
+ snd_hdac_chip_writew(bus, STATESTS, bus->codec_mask);
}
mutex_unlock(&bus->lock);