From 3b857472f34faa7d11001afa5e158833812c98d7 Mon Sep 17 00:00:00 2001
From: Yong Zhi <yong.zhi@intel.com>
Date: Tue, 7 Aug 2018 12:19:16 -0500
Subject: [PATCH] ASoC: Intel: hdac_hdmi: Limit sampling rates at dai creation
Git-commit: 3b857472f34faa7d11001afa5e158833812c98d7
Patch-mainline: v4.20-rc1
References: bsc#1051510
Playback of 44.1Khz contents with HDMI plugged returns
"Invalid pipe config" because HDMI paths in the FW
topology are configured to operate at 48Khz.
This patch filters out sampling rates not supported
at hdac_hdmi_create_dais() to let user space SRC
to do the converting.
Signed-off-by: Yong Zhi <yong.zhi@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
sound/soc/codecs/hdac_hdmi.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/sound/soc/codecs/hdac_hdmi.c
+++ b/sound/soc/codecs/hdac_hdmi.c
@@ -1396,6 +1396,12 @@ static int hdac_hdmi_create_dais(struct
if (ret)
return ret;
+ /* Filter out 44.1, 88.2 and 176.4Khz */
+ rates &= ~(SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_88200 |
+ SNDRV_PCM_RATE_176400);
+ if (!rates)
+ return -EINVAL;
+
sprintf(dai_name, "intel-hdmi-hifi%d", i+1);
hdmi_dais[i].name = devm_kstrdup(&hdac->dev,
dai_name, GFP_KERNEL);