Merge branch 'asoc-5.1' into asoc-5.2

sound/soc/codecs/cs4270.c

@@ -642,6 +642,7 @@ static const struct regmap_config cs4270_regmap = {
 	.reg_defaults =		cs4270_reg_defaults,
 	.num_reg_defaults =	ARRAY_SIZE(cs4270_reg_defaults),
 	.cache_type =		REGCACHE_RBTREE,
+	.write_flag_mask =	CS4270_I2C_INCR,
 
 	.readable_reg =		cs4270_reg_is_readable,
 	.volatile_reg =		cs4270_reg_is_volatile,

sound/soc/codecs/tlv320aic32x4-i2c.c

@@ -2,7 +2,7 @@
  *
  * Copyright 2011-2019 NW Digital Radio
  *
- * Author: Jeremy McDermond <nh6z@nh6z.net>
+ * Author: Annaliese McDermond <nh6z@nh6z.net>
  *
  * Based on sound/soc/codecs/wm8974 and TI driver for kernel 2.6.27.
  *
@@ -62,5 +62,5 @@ static struct i2c_driver aic32x4_i2c_driver = {
 module_i2c_driver(aic32x4_i2c_driver);
 
 MODULE_DESCRIPTION("ASoC TLV320AIC32x4 codec driver I2C");
-MODULE_AUTHOR("Jeremy McDermond <nh6z@nh6z.net>");
+MODULE_AUTHOR("Annaliese McDermond <nh6z@nh6z.net>");
 MODULE_LICENSE("GPL");

sound/soc/codecs/tlv320aic32x4-spi.c

@@ -2,7 +2,7 @@
  *
  * Copyright 2011-2019 NW Digital Radio
  *
- * Author: Jeremy McDermond <nh6z@nh6z.net>
+ * Author: Annaliese McDermond <nh6z@nh6z.net>
  *
  * Based on sound/soc/codecs/wm8974 and TI driver for kernel 2.6.27.
  *
@@ -64,5 +64,5 @@ static struct spi_driver aic32x4_spi_driver = {
 module_spi_driver(aic32x4_spi_driver);
 
 MODULE_DESCRIPTION("ASoC TLV320AIC32x4 codec driver SPI");
-MODULE_AUTHOR("Jeremy McDermond <nh6z@nh6z.net>");
+MODULE_AUTHOR("Annaliese McDermond <nh6z@nh6z.net>");
 MODULE_LICENSE("GPL");

sound/soc/codecs/tlv320aic32x4.c

@@ -443,6 +443,8 @@ static const struct snd_soc_dapm_widget aic32x4_dapm_widgets[] = {
 	SND_SOC_DAPM_INPUT("IN2_R"),
 	SND_SOC_DAPM_INPUT("IN3_L"),
 	SND_SOC_DAPM_INPUT("IN3_R"),
+	SND_SOC_DAPM_INPUT("CM_L"),
+	SND_SOC_DAPM_INPUT("CM_R"),
 };
 
 static const struct snd_soc_dapm_route aic32x4_dapm_routes[] = {

sound/soc/codecs/wm_adsp.c

@@ -3951,7 +3951,8 @@ int wm_adsp_compr_trigger(struct snd_compr_stream *stream, int cmd)
 		}
 		break;
 	case SNDRV_PCM_TRIGGER_STOP:
-		wm_adsp_buffer_clear(compr->buf);
+		if (wm_adsp_compr_attached(compr))
+			wm_adsp_buffer_clear(compr->buf);
 		break;
 	default:
 		ret = -EINVAL;

sound/soc/fsl/fsl_asrc.c

@@ -445,6 +445,19 @@ struct dma_chan *fsl_asrc_get_dma_channel(struct fsl_asrc_pair *pair, bool dir)
 }
 EXPORT_SYMBOL_GPL(fsl_asrc_get_dma_channel);
 
+static int fsl_asrc_dai_startup(struct snd_pcm_substream *substream,
+				struct snd_soc_dai *dai)
+{
+	struct fsl_asrc *asrc_priv = snd_soc_dai_get_drvdata(dai);
+
+	/* Odd channel number is not valid for older ASRC (channel_bits==3) */
+	if (asrc_priv->channel_bits == 3)
+		snd_pcm_hw_constraint_step(substream->runtime, 0,
+					   SNDRV_PCM_HW_PARAM_CHANNELS, 2);
+
+	return 0;
+}
+
 static int fsl_asrc_dai_hw_params(struct snd_pcm_substream *substream,
 				  struct snd_pcm_hw_params *params,
 				  struct snd_soc_dai *dai)
@@ -539,6 +552,7 @@ static int fsl_asrc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
 }
 
 static const struct snd_soc_dai_ops fsl_asrc_dai_ops = {
+	.startup      = fsl_asrc_dai_startup,
 	.hw_params    = fsl_asrc_dai_hw_params,
 	.hw_free      = fsl_asrc_dai_hw_free,
 	.trigger      = fsl_asrc_dai_trigger,

sound/soc/fsl/fsl_esai.c

@@ -54,6 +54,8 @@ struct fsl_esai {
 	u32 fifo_depth;
 	u32 slot_width;
 	u32 slots;
+	u32 tx_mask;
+	u32 rx_mask;
 	u32 hck_rate[2];
 	u32 sck_rate[2];
 	bool hck_dir[2];
@@ -361,21 +363,13 @@ static int fsl_esai_set_dai_tdm_slot(struct snd_soc_dai *dai, u32 tx_mask,
 	regmap_update_bits(esai_priv->regmap, REG_ESAI_TCCR,
 			   ESAI_xCCR_xDC_MASK, ESAI_xCCR_xDC(slots));
 
-	regmap_update_bits(esai_priv->regmap, REG_ESAI_TSMA,
-			   ESAI_xSMA_xS_MASK, ESAI_xSMA_xS(tx_mask));
-	regmap_update_bits(esai_priv->regmap, REG_ESAI_TSMB,
-			   ESAI_xSMB_xS_MASK, ESAI_xSMB_xS(tx_mask));
-
 	regmap_update_bits(esai_priv->regmap, REG_ESAI_RCCR,
 			   ESAI_xCCR_xDC_MASK, ESAI_xCCR_xDC(slots));
 
-	regmap_update_bits(esai_priv->regmap, REG_ESAI_RSMA,
-			   ESAI_xSMA_xS_MASK, ESAI_xSMA_xS(rx_mask));
-	regmap_update_bits(esai_priv->regmap, REG_ESAI_RSMB,
-			   ESAI_xSMB_xS_MASK, ESAI_xSMB_xS(rx_mask));
-
 	esai_priv->slot_width = slot_width;
 	esai_priv->slots = slots;
+	esai_priv->tx_mask = tx_mask;
+	esai_priv->rx_mask = rx_mask;
 
 	return 0;
 }
@@ -596,6 +590,7 @@ static int fsl_esai_trigger(struct snd_pcm_substream *substream, int cmd,
 	bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 	u8 i, channels = substream->runtime->channels;
 	u32 pins = DIV_ROUND_UP(channels, esai_priv->slots);
+	u32 mask;
 
 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_START:
@@ -608,15 +603,38 @@ static int fsl_esai_trigger(struct snd_pcm_substream *substream, int cmd,
 		for (i = 0; tx && i < channels; i++)
 			regmap_write(esai_priv->regmap, REG_ESAI_ETDR, 0x0);
 
+		/*
+		 * When set the TE/RE in the end of enablement flow, there
+		 * will be channel swap issue for multi data line case.
+		 * In order to workaround this issue, we switch the bit
+		 * enablement sequence to below sequence
+		 * 1) clear the xSMB & xSMA: which is done in probe and
+		 *                           stop state.
+		 * 2) set TE/RE
+		 * 3) set xSMB
+		 * 4) set xSMA:  xSMA is the last one in this flow, which
+		 *               will trigger esai to start.
+		 */
 		regmap_update_bits(esai_priv->regmap, REG_ESAI_xCR(tx),
 				   tx ? ESAI_xCR_TE_MASK : ESAI_xCR_RE_MASK,
 				   tx ? ESAI_xCR_TE(pins) : ESAI_xCR_RE(pins));
+		mask = tx ? esai_priv->tx_mask : esai_priv->rx_mask;
+
+		regmap_update_bits(esai_priv->regmap, REG_ESAI_xSMB(tx),
+				   ESAI_xSMB_xS_MASK, ESAI_xSMB_xS(mask));
+		regmap_update_bits(esai_priv->regmap, REG_ESAI_xSMA(tx),
+				   ESAI_xSMA_xS_MASK, ESAI_xSMA_xS(mask));
+
 		break;
 	case SNDRV_PCM_TRIGGER_SUSPEND:
 	case SNDRV_PCM_TRIGGER_STOP:
 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 		regmap_update_bits(esai_priv->regmap, REG_ESAI_xCR(tx),
 				   tx ? ESAI_xCR_TE_MASK : ESAI_xCR_RE_MASK, 0);
+		regmap_update_bits(esai_priv->regmap, REG_ESAI_xSMA(tx),
+				   ESAI_xSMA_xS_MASK, 0);
+		regmap_update_bits(esai_priv->regmap, REG_ESAI_xSMB(tx),
+				   ESAI_xSMB_xS_MASK, 0);
 
 		/* Disable and reset FIFO */
 		regmap_update_bits(esai_priv->regmap, REG_ESAI_xFCR(tx),
@@ -906,6 +924,15 @@ static int fsl_esai_probe(struct platform_device *pdev)
 		return ret;
 	}
 
+	esai_priv->tx_mask = 0xFFFFFFFF;
+	esai_priv->rx_mask = 0xFFFFFFFF;
+
+	/* Clear the TSMA, TSMB, RSMA, RSMB */
+	regmap_write(esai_priv->regmap, REG_ESAI_TSMA, 0);
+	regmap_write(esai_priv->regmap, REG_ESAI_TSMB, 0);
+	regmap_write(esai_priv->regmap, REG_ESAI_RSMA, 0);
+	regmap_write(esai_priv->regmap, REG_ESAI_RSMB, 0);
+
 	ret = devm_snd_soc_register_component(&pdev->dev, &fsl_esai_component,
 					      &fsl_esai_dai, 1);
 	if (ret) {

sound/soc/generic/audio-graph-card.c

@@ -20,6 +20,8 @@
 #include <linux/string.h>
 #include <sound/simple_card_utils.h>
 
+#define DPCM_SELECTABLE 1
+
 #define PREFIX	"audio-graph-card,"
 
 static int graph_outdrv_event(struct snd_soc_dapm_widget *w,
@@ -415,6 +417,7 @@ static int graph_for_each_link(struct asoc_simple_priv *priv,
 	struct device_node *codec_port;
 	struct device_node *codec_port_old = NULL;
 	struct asoc_simple_data adata;
+	uintptr_t dpcm_selectable = (uintptr_t)of_device_get_match_data(dev);
 	int rc, ret;
 
 	/* loop for all listed CPU port */
@@ -445,8 +448,9 @@ static int graph_for_each_link(struct asoc_simple_priv *priv,
 			 * if Codec port has many endpoints,
 			 * or has convert-xxx property
 			 */
-			if ((of_get_child_count(codec_port) > 1) ||
-			    adata.convert_rate || adata.convert_channels)
+			if (dpcm_selectable &&
+			    ((of_get_child_count(codec_port) > 1) ||
+			     adata.convert_rate || adata.convert_channels))
 				ret = func_dpcm(priv, cpu_ep, codec_ep, li,
 						(codec_port_old == codec_port));
 			/* else normal sound */
@@ -679,7 +683,8 @@ static int graph_remove(struct platform_device *pdev)
 
 static const struct of_device_id graph_of_match[] = {
 	{ .compatible = "audio-graph-card", },
-	{ .compatible = "audio-graph-scu-card", },
+	{ .compatible = "audio-graph-scu-card",
+	  .data = (void *)DPCM_SELECTABLE },
 	{},
 };
 MODULE_DEVICE_TABLE(of, graph_of_match);

sound/soc/generic/simple-card.c

@@ -9,12 +9,15 @@
 #include <linux/device.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/string.h>
 #include <sound/simple_card.h>
 #include <sound/soc-dai.h>
 #include <sound/soc.h>
 
+#define DPCM_SELECTABLE 1
+
 #define DAI	"sound-dai"
 #define CELL	"#sound-dai-cells"
 #define PREFIX	"simple-audio-card,"
@@ -349,6 +352,7 @@ static int simple_for_each_link(struct asoc_simple_priv *priv,
 	struct device *dev = simple_priv_to_dev(priv);
 	struct device_node *top = dev->of_node;
 	struct device_node *node;
+	uintptr_t dpcm_selectable = (uintptr_t)of_device_get_match_data(dev);
 	bool is_top = 0;
 	int ret = 0;
 
@@ -388,8 +392,9 @@ static int simple_for_each_link(struct asoc_simple_priv *priv,
 			 * if it has many CPUs,
 			 * or has convert-xxx property
 			 */
-			if (num > 2 ||
-			    adata.convert_rate || adata.convert_channels)
+			if (dpcm_selectable &&
+			    (num > 2 ||
+			     adata.convert_rate || adata.convert_channels))
 				ret = func_dpcm(priv, np, codec, li, is_top);
 			/* else normal sound */
 			else
@@ -705,7 +710,8 @@ static int simple_remove(struct platform_device *pdev)
 
 static const struct of_device_id simple_of_match[] = {
 	{ .compatible = "simple-audio-card", },
-	{ .compatible = "simple-scu-audio-card", },
+	{ .compatible = "simple-scu-audio-card",
+	  .data = (void *)DPCM_SELECTABLE },
 	{},
 };
 MODULE_DEVICE_TABLE(of, simple_of_match);

sound/soc/intel/atom/sst-mfld-platform-pcm.c

@@ -706,9 +706,17 @@ static int sst_soc_probe(struct snd_soc_component *component)
 	return sst_dsp_init_v2_dpcm(component);
 }
 
+static void sst_soc_remove(struct snd_soc_component *component)
+{
+	struct sst_data *drv = dev_get_drvdata(component->dev);
+
+	drv->soc_card = NULL;
+}
+
 static const struct snd_soc_component_driver sst_soc_platform_drv  = {
 	.name		= DRV_NAME,
 	.probe		= sst_soc_probe,
+	.remove		= sst_soc_remove,
 	.ops		= &sst_platform_ops,
 	.compr_ops	= &sst_platform_compr_ops,
 	.pcm_new	= sst_pcm_new,

sound/soc/intel/boards/cht_bsw_max98090_ti.c

@@ -43,6 +43,7 @@ struct cht_mc_private {
 	struct clk *mclk;
 	struct snd_soc_jack jack;
 	bool ts3a227e_present;
+	int quirks;
 };
 
 static int platform_clock_control(struct snd_soc_dapm_widget *w,
@@ -54,6 +55,10 @@ static int platform_clock_control(struct snd_soc_dapm_widget *w,
 	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
 	int ret;
 
+	/* See the comment in snd_cht_mc_probe() */
+	if (ctx->quirks & QUIRK_PMC_PLT_CLK_0)
+		return 0;
+
 	codec_dai = snd_soc_card_get_codec_dai(card, CHT_CODEC_DAI);
 	if (!codec_dai) {
 		dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
@@ -223,6 +228,10 @@ static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
 			"jack detection gpios not added, error %d\n", ret);
 	}
 
+	/* See the comment in snd_cht_mc_probe() */
+	if (ctx->quirks & QUIRK_PMC_PLT_CLK_0)
+		return 0;
+
 	/*
 	 * The firmware might enable the clock at
 	 * boot (this information may or may not
@@ -423,16 +432,15 @@ static int snd_cht_mc_probe(struct platform_device *pdev)
 	const char *mclk_name;
 	struct snd_soc_acpi_mach *mach;
 	const char *platform_name;
-	int quirks = 0;
-
-	dmi_id = dmi_first_match(cht_max98090_quirk_table);
-	if (dmi_id)
-		quirks = (unsigned long)dmi_id->driver_data;
 
 	drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
 	if (!drv)
 		return -ENOMEM;
 
+	dmi_id = dmi_first_match(cht_max98090_quirk_table);
+	if (dmi_id)
+		drv->quirks = (unsigned long)dmi_id->driver_data;
+
 	drv->ts3a227e_present = acpi_dev_found("104C227E");
 	if (!drv->ts3a227e_present) {
 		/* no need probe TI jack detection chip */
@@ -458,7 +466,7 @@ static int snd_cht_mc_probe(struct platform_device *pdev)
 	snd_soc_card_cht.dev = &pdev->dev;
 	snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
 
-	if (quirks & QUIRK_PMC_PLT_CLK_0)
+	if (drv->quirks & QUIRK_PMC_PLT_CLK_0)
 		mclk_name = "pmc_plt_clk_0";
 	else
 		mclk_name = "pmc_plt_clk_3";
@@ -471,6 +479,21 @@ static int snd_cht_mc_probe(struct platform_device *pdev)
 		return PTR_ERR(drv->mclk);
 	}
 
+	/*
+	 * Boards which have the MAX98090's clk connected to clk_0 do not seem
+	 * to like it if we muck with the clock. If we disable the clock when
+	 * it is unused we get "max98090 i2c-193C9890:00: PLL unlocked" errors
+	 * and the PLL never seems to lock again.
+	 * So for these boards we enable it here once and leave it at that.
+	 */
+	if (drv->quirks & QUIRK_PMC_PLT_CLK_0) {
+		ret_val = clk_prepare_enable(drv->mclk);
+		if (ret_val < 0) {
+			dev_err(&pdev->dev, "MCLK enable error: %d\n", ret_val);
+			return ret_val;
+		}
+	}
+
 	ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
 	if (ret_val) {
 		dev_err(&pdev->dev,
@@ -481,11 +504,23 @@ static int snd_cht_mc_probe(struct platform_device *pdev)
 	return ret_val;
 }
 
+static int snd_cht_mc_remove(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = platform_get_drvdata(pdev);
+	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
+
+	if (ctx->quirks & QUIRK_PMC_PLT_CLK_0)
+		clk_disable_unprepare(ctx->mclk);
+
+	return 0;
+}
+
 static struct platform_driver snd_cht_mc_driver = {
 	.driver = {
 		.name = "cht-bsw-max98090",
 	},
 	.probe = snd_cht_mc_probe,
+	.remove = snd_cht_mc_remove,
 };
 
 module_platform_driver(snd_cht_mc_driver)

sound/soc/intel/skylake/skl-messages.c

@@ -483,6 +483,7 @@ static void skl_set_base_module_format(struct skl_sst *ctx,
 	base_cfg->audio_fmt.bit_depth = format->bit_depth;
 	base_cfg->audio_fmt.valid_bit_depth = format->valid_bit_depth;
 	base_cfg->audio_fmt.ch_cfg = format->ch_cfg;
+	base_cfg->audio_fmt.sample_type = format->sample_type;
 
 	dev_dbg(ctx->dev, "bit_depth=%x valid_bd=%x ch_config=%x\n",
 			format->bit_depth, format->valid_bit_depth,

sound/soc/rockchip/rockchip_pdm.c

@@ -24,7 +24,7 @@
 
 #include "rockchip_pdm.h"
 
-#define PDM_DMA_BURST_SIZE	(16) /* size * width: 16*4 = 64 bytes */
+#define PDM_DMA_BURST_SIZE	(8) /* size * width: 8*4 = 32 bytes */
 
 struct rk_pdm_dev {
 	struct device *dev;
@@ -206,7 +206,9 @@ static int rockchip_pdm_set_fmt(struct snd_soc_dai *cpu_dai,
 		return -EINVAL;
 	}
 
+	pm_runtime_get_sync(cpu_dai->dev);
 	regmap_update_bits(pdm->regmap, PDM_CLK_CTRL, mask, val);
+	pm_runtime_put(cpu_dai->dev);
 
 	return 0;
 }

sound/soc/soc-dapm.c

@@ -3650,6 +3650,13 @@ snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
 	case snd_soc_dapm_dac:
 	case snd_soc_dapm_aif_in:
 	case snd_soc_dapm_pga:
+	case snd_soc_dapm_buffer:
+	case snd_soc_dapm_scheduler:
+	case snd_soc_dapm_effect:
+	case snd_soc_dapm_src:
+	case snd_soc_dapm_asrc:
+	case snd_soc_dapm_encoder:
+	case snd_soc_dapm_decoder:
 	case snd_soc_dapm_out_drv:
 	case snd_soc_dapm_micbias:
 	case snd_soc_dapm_line:
@@ -3957,6 +3964,10 @@ snd_soc_dapm_free_kcontrol(struct snd_soc_card *card,
 	int count;
 
 	devm_kfree(card->dev, (void *)*private_value);
+
+	if (!w_param_text)
+		return;
+
 	for (count = 0 ; count < num_params; count++)
 		devm_kfree(card->dev, (void *)w_param_text[count]);
 	devm_kfree(card->dev, w_param_text);

sound/soc/soc-pcm.c

@@ -1911,10 +1911,15 @@ static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream,
 		struct snd_soc_pcm_runtime *be = dpcm->be;
 		struct snd_pcm_substream *be_substream =
 			snd_soc_dpcm_get_substream(be, stream);
-		struct snd_soc_pcm_runtime *rtd = be_substream->private_data;
+		struct snd_soc_pcm_runtime *rtd;
 		struct snd_soc_dai *codec_dai;
 		int i;
 
+		/* A backend may not have the requested substream */
+		if (!be_substream)
+			continue;
+
+		rtd = be_substream->private_data;
 		if (rtd->dai_link->be_hw_params_fixup)
 			continue;
 

sound/soc/stm/stm32_adfsdm.c

@@ -9,6 +9,7 @@
 
 #include <linux/clk.h>
 #include <linux/module.h>
+#include <linux/mutex.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 
@@ -37,6 +38,8 @@ struct stm32_adfsdm_priv {
 	/* PCM buffer */
 	unsigned char *pcm_buff;
 	unsigned int pos;
+
+	struct mutex lock; /* protect against race condition on iio state */
 };
 
 static const struct snd_pcm_hardware stm32_adfsdm_pcm_hw = {
@@ -62,10 +65,12 @@ static void stm32_adfsdm_shutdown(struct snd_pcm_substream *substream,
 {
 	struct stm32_adfsdm_priv *priv = snd_soc_dai_get_drvdata(dai);
 
+	mutex_lock(&priv->lock);
 	if (priv->iio_active) {
 		iio_channel_stop_all_cb(priv->iio_cb);
 		priv->iio_active = false;
 	}
+	mutex_unlock(&priv->lock);
 }
 
 static int stm32_adfsdm_dai_prepare(struct snd_pcm_substream *substream,
@@ -74,13 +79,19 @@ static int stm32_adfsdm_dai_prepare(struct snd_pcm_substream *substream,
 	struct stm32_adfsdm_priv *priv = snd_soc_dai_get_drvdata(dai);
 	int ret;
 
+	mutex_lock(&priv->lock);
+	if (priv->iio_active) {
+		iio_channel_stop_all_cb(priv->iio_cb);
+		priv->iio_active = false;
+	}
+
 	ret = iio_write_channel_attribute(priv->iio_ch,
 					  substream->runtime->rate, 0,
 					  IIO_CHAN_INFO_SAMP_FREQ);
 	if (ret < 0) {
 		dev_err(dai->dev, "%s: Failed to set %d sampling rate\n",
 			__func__, substream->runtime->rate);
-		return ret;
+		goto out;
 	}
 
 	if (!priv->iio_active) {
@@ -92,6 +103,9 @@ static int stm32_adfsdm_dai_prepare(struct snd_pcm_substream *substream,
 				__func__, ret);
 	}
 
+out:
+	mutex_unlock(&priv->lock);
+
 	return ret;
 }
 
@@ -291,6 +305,7 @@ MODULE_DEVICE_TABLE(of, stm32_adfsdm_of_match);
 static int stm32_adfsdm_probe(struct platform_device *pdev)
 {
 	struct stm32_adfsdm_priv *priv;
+	struct snd_soc_component *component;
 	int ret;
 
 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
@@ -299,6 +314,7 @@ static int stm32_adfsdm_probe(struct platform_device *pdev)
 
 	priv->dev = &pdev->dev;
 	priv->dai_drv = stm32_adfsdm_dai;
+	mutex_init(&priv->lock);
 
 	dev_set_drvdata(&pdev->dev, priv);
 
@@ -317,9 +333,15 @@ static int stm32_adfsdm_probe(struct platform_device *pdev)
 	if (IS_ERR(priv->iio_cb))
 		return PTR_ERR(priv->iio_cb);
 
-	ret = devm_snd_soc_register_component(&pdev->dev,
-					      &stm32_adfsdm_soc_platform,
-					      NULL, 0);
+	component = devm_kzalloc(&pdev->dev, sizeof(*component), GFP_KERNEL);
+	if (!component)
+		return -ENOMEM;
+#ifdef CONFIG_DEBUG_FS
+	component->debugfs_prefix = "pcm";
+#endif
+
+	ret = snd_soc_add_component(&pdev->dev, component,
+				    &stm32_adfsdm_soc_platform, NULL, 0);
 	if (ret < 0)
 		dev_err(&pdev->dev, "%s: Failed to register PCM platform\n",
 			__func__);
@@ -327,12 +349,20 @@ static int stm32_adfsdm_probe(struct platform_device *pdev)
 	return ret;
 }
 
+static int stm32_adfsdm_remove(struct platform_device *pdev)
+{
+	snd_soc_unregister_component(&pdev->dev);
+
+	return 0;
+}
+
 static struct platform_driver stm32_adfsdm_driver = {
 	.driver = {
 		   .name = STM32_ADFSDM_DRV_NAME,
 		   .of_match_table = stm32_adfsdm_of_match,
 		   },
 	.probe = stm32_adfsdm_probe,
+	.remove = stm32_adfsdm_remove,
 };
 
 module_platform_driver(stm32_adfsdm_driver);