ASoC: tegra: Add support for 24KHz and 64KHz rate

- Fix the issues with 24KHz and 64KHz sample rate.
- In machine driver, 24KHz and 64KHz were not supported, add
  the rates into the list.
- 24KHz is not supported by ALSA, to support it mentioned dai rates
  as SNDRV_PCM_RATE_KNOT. Using KNOT chip can support unconventional rates,
  defined in hw constraints list.
- The change is added for FE links only,  for BE links its not required as
  it will be taken care by FE links.

Bug 200757915

Change-Id: I348368420316ba78b303cd27a413048b6cab2dd7
Signed-off-by: sheetal <sheetal@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-5.10/+/2571687
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>

sound/soc/tegra/tegra210_admaif.c

@@ -40,6 +40,16 @@
 		chip ## _ADMAIF_TX_BASE,				       \
 		chip ## _ADMAIF_RX_BASE)
 
+static unsigned int tegra_supported_admaif_rate[] = {
+	8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000,
+	64000, 88200, 96000, 176400, 192000,
+};
+
+static struct snd_pcm_hw_constraint_list tegra_admaif_rate_constraints = {
+	.count = ARRAY_SIZE(tegra_supported_admaif_rate),
+	.list = tegra_supported_admaif_rate,
+};
+
 static const struct reg_default tegra186_admaif_reg_defaults[] = {
 	{(TEGRA_ADMAIF_GLOBAL_CG_0 + TEGRA186_ADMAIF_GLOBAL_BASE), 0x00000003},
 	ADMAIF_REG_DEFAULTS(1, TEGRA186),
@@ -445,8 +455,16 @@ static int tegra_admaif_trigger(struct snd_pcm_substream *substream, int cmd,
 	}
 }
 
+static int tegra_admaif_startup(struct snd_pcm_substream *substream,
+					struct snd_soc_dai *dai)
+{
+	return snd_pcm_hw_constraint_list(substream->runtime, 0,
+			SNDRV_PCM_HW_PARAM_RATE, &tegra_admaif_rate_constraints);
+}
+
 static const struct snd_soc_dai_ops tegra_admaif_dai_ops = {
 	.hw_params	= tegra_admaif_hw_params,
+	.startup	= tegra_admaif_startup,
 	.trigger	= tegra_admaif_trigger,
 	.shutdown	= tegra_admaif_shutdown,
 	.prepare	= tegra_admaif_prepare,
@@ -595,7 +613,7 @@ static int tegra_admaif_dai_probe(struct snd_soc_dai *dai)
 			.stream_name = dai_name " Playback",	\
 			.channels_min = 1,			\
 			.channels_max = 16,			\
-			.rates = SNDRV_PCM_RATE_8000_192000,	\
+			.rates = SNDRV_PCM_RATE_KNOT,		\
 			.formats = SNDRV_PCM_FMTBIT_S8 |	\
 				SNDRV_PCM_FMTBIT_S16_LE |	\
 				SNDRV_PCM_FMTBIT_S24_LE |	\
@@ -605,7 +623,7 @@ static int tegra_admaif_dai_probe(struct snd_soc_dai *dai)
 			.stream_name = dai_name " Capture",	\
 			.channels_min = 1,			\
 			.channels_max = 16,			\
-			.rates = SNDRV_PCM_RATE_8000_192000,	\
+			.rates = SNDRV_PCM_RATE_KNOT,		\
 			.formats = SNDRV_PCM_FMTBIT_S8 |	\
 				SNDRV_PCM_FMTBIT_S16_LE |	\
 				SNDRV_PCM_FMTBIT_S24_LE |	\
@@ -621,7 +639,7 @@ static int tegra_admaif_dai_probe(struct snd_soc_dai *dai)
 			.stream_name = "ADMAIF" #id " FIFO Transmit",	\
 			.channels_min = 1,				\
 			.channels_max = 16,				\
-			.rates = SNDRV_PCM_RATE_8000_192000,		\
+			.rates = SNDRV_PCM_RATE_KNOT,			\
 			.formats = SNDRV_PCM_FMTBIT_S8 |		\
 				SNDRV_PCM_FMTBIT_S16_LE |		\
 				SNDRV_PCM_FMTBIT_S24_LE |		\
@@ -631,7 +649,7 @@ static int tegra_admaif_dai_probe(struct snd_soc_dai *dai)
 			.stream_name = "ADMAIF" #id " FIFO Receive",	\
 			.channels_min = 1,				\
 			.channels_max = 16,				\
-			.rates = SNDRV_PCM_RATE_8000_192000,		\
+			.rates = SNDRV_PCM_RATE_KNOT,			\
 			.formats = SNDRV_PCM_FMTBIT_S8 |		\
 				SNDRV_PCM_FMTBIT_S16_LE |		\
 				SNDRV_PCM_FMTBIT_S24_LE |		\
@@ -647,7 +665,7 @@ static int tegra_admaif_dai_probe(struct snd_soc_dai *dai)
 			.stream_name = "ADMAIF" #id " CIF Transmit",	\
 			.channels_min = 1,				\
 			.channels_max = 16,				\
-			.rates = SNDRV_PCM_RATE_8000_192000,		\
+			.rates = SNDRV_PCM_RATE_KNOT,			\
 			.formats = SNDRV_PCM_FMTBIT_S8 |		\
 				SNDRV_PCM_FMTBIT_S16_LE |		\
 				SNDRV_PCM_FMTBIT_S24_LE |		\
@@ -657,7 +675,7 @@ static int tegra_admaif_dai_probe(struct snd_soc_dai *dai)
 			.stream_name = "ADMAIF" #id " CIF Receive",	\
 			.channels_min = 1,				\
 			.channels_max = 16,				\
-			.rates = SNDRV_PCM_RATE_8000_192000,		\
+			.rates = SNDRV_PCM_RATE_KNOT,			\
 			.formats = SNDRV_PCM_FMTBIT_S8 |		\
 				SNDRV_PCM_FMTBIT_S16_LE |		\
 				SNDRV_PCM_FMTBIT_S24_LE |		\

sound/soc/tegra/tegra210_ahub.c

@@ -14,6 +14,16 @@
 #include <sound/soc.h>
 #include "tegra210_ahub.h"
 
+static unsigned int tegra_supported_ahub_rate[] = {
+	8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000,
+	64000, 88200, 96000, 176400, 192000,
+};
+
+static struct snd_pcm_hw_constraint_list tegra_ahub_rate_constraints = {
+	.count = ARRAY_SIZE(tegra_supported_ahub_rate),
+	.list = tegra_supported_ahub_rate,
+};
+
 static int tegra_ahub_get_value_enum(struct snd_kcontrol *kctl,
 				     struct snd_ctl_elem_value *uctl)
 {
@@ -136,6 +146,17 @@ void tegra210_ahub_read_ram(struct regmap *regmap, unsigned int reg_ctrl,
 }
 EXPORT_SYMBOL_GPL(tegra210_ahub_read_ram);
 
+static int tegra_ahub_startup(struct snd_pcm_substream *substream,
+					struct snd_soc_dai *dai)
+{
+	return snd_pcm_hw_constraint_list(substream->runtime, 0,
+			SNDRV_PCM_HW_PARAM_RATE, &tegra_ahub_rate_constraints);
+}
+
+static struct snd_soc_dai_ops tegra_ahub_dai_ops = {
+	.startup	= tegra_ahub_startup,
+};
+
 static struct snd_soc_dai_driver tegra210_ahub_dais[] = {
 	DAI(ADMAIF1),
 	DAI(ADMAIF2),

sound/soc/tegra/tegra210_ahub.h

@@ -2,7 +2,7 @@
 /*
  * tegra210_ahub.h - TEGRA210 AHUB
  *
- * Copyright (c) 2020 NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2020-2021 NVIDIA CORPORATION.  All rights reserved.
  *
  */
 
@@ -102,7 +102,7 @@
 			.stream_name = #sname " XBAR-Playback",		\
 			.channels_min = 1,				\
 			.channels_max = 16,				\
-			.rates = SNDRV_PCM_RATE_8000_192000,		\
+			.rates = SNDRV_PCM_RATE_KNOT,		\
 			.formats = SNDRV_PCM_FMTBIT_S8 |		\
 				SNDRV_PCM_FMTBIT_S16_LE |		\
 				SNDRV_PCM_FMTBIT_S24_LE |		\
@@ -112,12 +112,13 @@
 			.stream_name = #sname " XBAR-Capture",		\
 			.channels_min = 1,				\
 			.channels_max = 16,				\
-			.rates = SNDRV_PCM_RATE_8000_192000,		\
+			.rates = SNDRV_PCM_RATE_KNOT,		\
 			.formats = SNDRV_PCM_FMTBIT_S8 |		\
 				SNDRV_PCM_FMTBIT_S16_LE |		\
 				SNDRV_PCM_FMTBIT_S24_LE |		\
 				SNDRV_PCM_FMTBIT_S32_LE,		\
 		},							\
+		.ops = &tegra_ahub_dai_ops,		\
 	}
 
 struct tegra_ahub_soc_data {

sound/soc/tegra/tegra_asoc_utils.c

@@ -50,6 +50,7 @@ int tegra_asoc_utils_set_rate(struct tegra_asoc_utils_data *data, int srate,
 		break;
 	case 8000:
 	case 16000:
+	case 24000:
 	case 32000:
 	case 48000:
 	case 64000:
@@ -189,8 +190,10 @@ int tegra_asoc_utils_set_tegra210_rate(struct tegra_asoc_utils_data *data,
 		break;
 	case 8000:
 	case 16000:
+	case 24000:
 	case 32000:
 	case 48000:
+	case 64000:
 	case 96000:
 	case 192000:
 		new_pll_base = data->pll_base_rate[EVEN_RATE];