diff mbox series

[5/5] ASoC: SOF: Force polling mode on CFL and CNL

Message ID 20190526165836.10867-5-yung-chuan.liao@linux.intel.com (mailing list archive)
State New, archived
Headers show
Series [1/5] ALSA: hda - Force polling mode on CNL for fixing codec communication | expand

Commit Message

Bard Liao May 26, 2019, 4:58 p.m. UTC 
From: Bard Liao <yung-chuan.liao@linux.intel.com>

There is a workaround in legacy HDA codec for too long time respone
with CFL machine. We need the same workaround on SOF driver. The same
issue is also seen on CNL machine.

Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
---
 sound/soc/sof/intel/hda.c | 8 ++++++++
 1 file changed, 8 insertions(+)
diff mbox series

Patch

diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index 5c78f4dde6f5..b9f3c802924b 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -32,6 +32,9 @@ 
 /* platform specific devices */
 #include "shim.h"
 
+#define IS_CFL(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0xa348)
+#define IS_CNL(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x9dc8)
+
 /*
  * Debug
  */
@@ -217,6 +220,11 @@  static int hda_init(struct snd_sof_dev *sdev)
 	ext_ops = snd_soc_hdac_hda_get_ops();
 #endif
 	sof_hda_bus_init(bus, &pci->dev, ext_ops);
+
+	/* Workaround for a communication error on CFL (bko#199007) and CNL */
+	if (IS_CFL(pci) || IS_CNL(pci))
+		bus->polling_mode = 1;
+
 	bus->use_posbuf = 1;
 	bus->bdl_pos_adj = 0;