clear-pkgs-linux-iot-lts2018/0273-ASoC-Intel-Skylake-Support-for-all-rates-from-8K-to-.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Mousami Jana <mousami.janax@intel.com>
Date: Mon, 19 Dec 2016 12:00:13 +0530
Subject: [PATCH] ASoC: Intel: Skylake: Support for all rates from 8K to 192K

Add support for all sample rates in FE pipelines which are
required for IVI usecases.

Platform capabilities have been changed to support all rates
via SNDRV_PCM_RATE_KNOT. Supported rates are validated
against a constraint list. The list contains the rates supported
by the DSP FW's rate conversion algorithm.

Change-Id: I28f275e0f0a9f2a497d8d0a9ab9b2a5b2b067e46
Signed-off-by: Mousumi Jana <mousumix.jana@intel.com>
Signed-off-by: Yadav, PramodX K <pramodx.k.yadav@intel.com>
Reviewed-on:
Reviewed-by: Babu, Ramesh <ramesh.babu@intel.com>
Tested-by: Babu, Ramesh <ramesh.babu@intel.com>
Reviewed-on:
Reviewed-by: R, Dharageswari <dharageswari.r@intel.com>
Reviewed-by: Kp, Jeeja <jeeja.kp@intel.com>
Tested-by: Avati, Santosh Kumar <santosh.kumar.avati@intel.com>
---
 sound/soc/intel/skylake/skl-pcm.c | 37 +++++++++++++++++++++++++++----
 1 file changed, 33 insertions(+), 4 deletions(-)

diff --git a/sound/soc/intel/skylake/skl-pcm.c b/sound/soc/intel/skylake/skl-pcm.c
index 4c85981378c2..07faaa2c80a4 100644
--- a/sound/soc/intel/skylake/skl-pcm.c
+++ b/sound/soc/intel/skylake/skl-pcm.c
@@ -50,9 +50,8 @@ static const struct snd_pcm_hardware azx_pcm_hw = {
 				 SNDRV_PCM_INFO_NO_STATUS_MMAP),
 	.formats =		SNDRV_PCM_FMTBIT_S16_LE |
 				SNDRV_PCM_FMTBIT_S32_LE |
-				SNDRV_PCM_FMTBIT_S24_LE,
-	.rates =		SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_16000 |
-				SNDRV_PCM_RATE_8000,
+				SNDRV_PCM_FMTBIT_S24_LE, /* TODO Add constraints to other machine drivers */
+	.rates =		SNDRV_PCM_RATE_8000_192000 | SNDRV_PCM_RATE_KNOT,
 	.rate_min =		8000,
 	.rate_max =		48000,
 	.channels_min =		1,
@@ -124,6 +123,31 @@ static enum hdac_ext_stream_type skl_get_host_stream_type(struct hdac_bus *bus)
 		return HDAC_EXT_STREAM_TYPE_COUPLED;
 }
 
+static unsigned int rates[] = {
+       8000,
+       11025,
+       12000,
+       16000,
+       22050,
+       24000,
+       32000,
+       44100,
+       48000,
+       64000,
+       88200,
+       96000,
+       128000,
+       176400,
+       192000,
+};
+
+static struct snd_pcm_hw_constraint_list hw_rates = {
+       .count = ARRAY_SIZE(rates),
+       .list = rates,
+       .mask = 0,
+};
+
+
 /*
  * check if the stream opened is marked as ignore_suspend by machine, if so
  * then enable suspend_active refcount
@@ -250,6 +274,11 @@ static int skl_pcm_open(struct snd_pcm_substream *substream,
 
 	skl_set_pcm_constrains(bus, runtime);
 
+	snd_pcm_hw_constraint_list(runtime, 0,
+			SNDRV_PCM_HW_PARAM_RATE,
+                                     &hw_rates);
+
+
 	/*
 	 * disable WALLCLOCK timestamps for capture streams
 	 * until we figure out how to handle digital inputs
@@ -983,7 +1012,7 @@ static struct snd_soc_dai_driver skl_fe_dai[] = {
 		.stream_name = "System Playback",
 		.channels_min = HDA_MONO,
 		.channels_max = HDA_STEREO,
-		.rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_8000,
+		.rates = SNDRV_PCM_RATE_8000_192000 | SNDRV_PCM_RATE_KNOT,
 		.formats = SNDRV_PCM_FMTBIT_S16_LE |
 			SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE,
 		.sig_bits = 32,
-- 
https://clearlinux.org