From: Bard Liao <yung-chuan.liao@linux.intel.com>
Date: Sun, 26 May 2019 16:58:36 +0000 (+0800)
Subject: ASoC: SOF: Force polling mode on CFL and CNL
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=64ca9d9fcb3e3c86b1417e3d17a90b43dd660f81;p=uclinux-h8%2Flinux.git

ASoC: SOF: Force polling mode on CFL and CNL

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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index 7e3980a2f7ba..ff973e8d054b 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
  */
@@ -213,6 +216,11 @@ 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;