1 files changed, 465 insertions, 205 deletions

diff --git a/sound/soc/soc-component.c b/sound/soc/soc-component.c
index 785a0385cc7f..f0b4f4bc44a4 100644
--- a/sound/soc/soc-component.c
+++ b/sound/soc/soc-component.c
@@ -2,12 +2,53 @@
 //
 // soc-component.c
 //
+// Copyright 2009-2011 Wolfson Microelectronics PLC.
 // Copyright (C) 2019 Renesas Electronics Corp.
+//
+// Mark Brown <broonie@opensource.wolfsonmicro.com>
 // Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
 //
 #include <linux/module.h>
 #include <sound/soc.h>
 
+#define soc_component_ret(dai, ret) _soc_component_ret(dai, __func__, ret)
+static inline int _soc_component_ret(struct snd_soc_component *component,
+				     const char *func, int ret)
+{
+	/* Positive/Zero values are not errors */
+	if (ret >= 0)
+		return ret;
+
+	/* Negative values might be errors */
+	switch (ret) {
+	case -EPROBE_DEFER:
+	case -ENOTSUPP:
+		break;
+	default:
+		dev_err(component->dev,
+			"ASoC: error at %s on %s: %d\n",
+			func, component->name, ret);
+	}
+
+	return ret;
+}
+
+void snd_soc_component_set_aux(struct snd_soc_component *component,
+			       struct snd_soc_aux_dev *aux)
+{
+	component->init = (aux) ? aux->init : NULL;
+}
+
+int snd_soc_component_init(struct snd_soc_component *component)
+{
+	int ret = 0;
+
+	if (component->init)
+		ret = component->init(component);
+
+	return soc_component_ret(component, ret);
+}
+
 /**
  * snd_soc_component_set_sysclk - configure COMPONENT system or master clock.
  * @component: COMPONENT
@@ -22,11 +63,13 @@ int snd_soc_component_set_sysclk(struct snd_soc_component *component,
 				 int clk_id, int source, unsigned int freq,
 				 int dir)
 {
+	int ret = -ENOTSUPP;
+
 	if (component->driver->set_sysclk)
-		return component->driver->set_sysclk(component, clk_id, source,
+		ret = component->driver->set_sysclk(component, clk_id, source,
 						     freq, dir);
 
-	return -ENOTSUPP;
+	return soc_component_ret(component, ret);
 }
 EXPORT_SYMBOL_GPL(snd_soc_component_set_sysclk);
 
@@ -44,11 +87,13 @@ int snd_soc_component_set_pll(struct snd_soc_component *component, int pll_id,
 			      int source, unsigned int freq_in,
 			      unsigned int freq_out)
 {
+	int ret = -EINVAL;
+
 	if (component->driver->set_pll)
-		return component->driver->set_pll(component, pll_id, source,
+		ret = component->driver->set_pll(component, pll_id, source,
 						  freq_in, freq_out);
 
-	return -EINVAL;
+	return soc_component_ret(component, ret);
 }
 EXPORT_SYMBOL_GPL(snd_soc_component_set_pll);
 
@@ -62,194 +107,105 @@ void snd_soc_component_seq_notifier(struct snd_soc_component *component,
 int snd_soc_component_stream_event(struct snd_soc_component *component,
 				   int event)
 {
+	int ret = 0;
+
 	if (component->driver->stream_event)
-		return component->driver->stream_event(component, event);
+		ret = component->driver->stream_event(component, event);
 
-	return 0;
+	return soc_component_ret(component, ret);
 }
 
 int snd_soc_component_set_bias_level(struct snd_soc_component *component,
 				     enum snd_soc_bias_level level)
 {
+	int ret = 0;
+
 	if (component->driver->set_bias_level)
-		return component->driver->set_bias_level(component, level);
+		ret = component->driver->set_bias_level(component, level);
 
-	return 0;
+	return soc_component_ret(component, ret);
 }
 
-int snd_soc_component_enable_pin(struct snd_soc_component *component,
-				 const char *pin)
+static int soc_component_pin(struct snd_soc_component *component,
+			     const char *pin,
+			     int (*pin_func)(struct snd_soc_dapm_context *dapm,
+					     const char *pin))
 {
 	struct snd_soc_dapm_context *dapm =
 		snd_soc_component_get_dapm(component);
 	char *full_name;
 	int ret;
 
-	if (!component->name_prefix)
-		return snd_soc_dapm_enable_pin(dapm, pin);
+	if (!component->name_prefix) {
+		ret = pin_func(dapm, pin);
+		goto end;
+	}
 
 	full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
-	if (!full_name)
-		return -ENOMEM;
+	if (!full_name) {
+		ret = -ENOMEM;
+		goto end;
+	}
 
-	ret = snd_soc_dapm_enable_pin(dapm, full_name);
+	ret = pin_func(dapm, full_name);
 	kfree(full_name);
+end:
+	return soc_component_ret(component, ret);
+}
 
-	return ret;
+int snd_soc_component_enable_pin(struct snd_soc_component *component,
+				 const char *pin)
+{
+	return soc_component_pin(component, pin, snd_soc_dapm_enable_pin);
 }
 EXPORT_SYMBOL_GPL(snd_soc_component_enable_pin);
 
 int snd_soc_component_enable_pin_unlocked(struct snd_soc_component *component,
 					  const char *pin)
 {
-	struct snd_soc_dapm_context *dapm =
-		snd_soc_component_get_dapm(component);
-	char *full_name;
-	int ret;
-
-	if (!component->name_prefix)
-		return snd_soc_dapm_enable_pin_unlocked(dapm, pin);
-
-	full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
-	if (!full_name)
-		return -ENOMEM;
-
-	ret = snd_soc_dapm_enable_pin_unlocked(dapm, full_name);
-	kfree(full_name);
-
-	return ret;
+	return soc_component_pin(component, pin, snd_soc_dapm_enable_pin_unlocked);
 }
 EXPORT_SYMBOL_GPL(snd_soc_component_enable_pin_unlocked);
 
 int snd_soc_component_disable_pin(struct snd_soc_component *component,
 				  const char *pin)
 {
-	struct snd_soc_dapm_context *dapm =
-		snd_soc_component_get_dapm(component);
-	char *full_name;
-	int ret;
-
-	if (!component->name_prefix)
-		return snd_soc_dapm_disable_pin(dapm, pin);
-
-	full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
-	if (!full_name)
-		return -ENOMEM;
-
-	ret = snd_soc_dapm_disable_pin(dapm, full_name);
-	kfree(full_name);
-
-	return ret;
+	return soc_component_pin(component, pin, snd_soc_dapm_disable_pin);
 }
 EXPORT_SYMBOL_GPL(snd_soc_component_disable_pin);
 
 int snd_soc_component_disable_pin_unlocked(struct snd_soc_component *component,
 					   const char *pin)
 {
-	struct snd_soc_dapm_context *dapm =
-		snd_soc_component_get_dapm(component);
-	char *full_name;
-	int ret;
-
-	if (!component->name_prefix)
-		return snd_soc_dapm_disable_pin_unlocked(dapm, pin);
-
-	full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
-	if (!full_name)
-		return -ENOMEM;
-
-	ret = snd_soc_dapm_disable_pin_unlocked(dapm, full_name);
-	kfree(full_name);
-
-	return ret;
+	return soc_component_pin(component, pin, snd_soc_dapm_disable_pin_unlocked);
 }
 EXPORT_SYMBOL_GPL(snd_soc_component_disable_pin_unlocked);
 
 int snd_soc_component_nc_pin(struct snd_soc_component *component,
 			     const char *pin)
 {
-	struct snd_soc_dapm_context *dapm =
-		snd_soc_component_get_dapm(component);
-	char *full_name;
-	int ret;
-
-	if (!component->name_prefix)
-		return snd_soc_dapm_nc_pin(dapm, pin);
-
-	full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
-	if (!full_name)
-		return -ENOMEM;
-
-	ret = snd_soc_dapm_nc_pin(dapm, full_name);
-	kfree(full_name);
-
-	return ret;
+	return soc_component_pin(component, pin, snd_soc_dapm_nc_pin);
 }
 EXPORT_SYMBOL_GPL(snd_soc_component_nc_pin);
 
 int snd_soc_component_nc_pin_unlocked(struct snd_soc_component *component,
 				      const char *pin)
 {
-	struct snd_soc_dapm_context *dapm =
-		snd_soc_component_get_dapm(component);
-	char *full_name;
-	int ret;
-
-	if (!component->name_prefix)
-		return snd_soc_dapm_nc_pin_unlocked(dapm, pin);
-
-	full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
-	if (!full_name)
-		return -ENOMEM;
-
-	ret = snd_soc_dapm_nc_pin_unlocked(dapm, full_name);
-	kfree(full_name);
-
-	return ret;
+	return soc_component_pin(component, pin, snd_soc_dapm_nc_pin_unlocked);
 }
 EXPORT_SYMBOL_GPL(snd_soc_component_nc_pin_unlocked);
 
 int snd_soc_component_get_pin_status(struct snd_soc_component *component,
 				     const char *pin)
 {
-	struct snd_soc_dapm_context *dapm =
-		snd_soc_component_get_dapm(component);
-	char *full_name;
-	int ret;
-
-	if (!component->name_prefix)
-		return snd_soc_dapm_get_pin_status(dapm, pin);
-
-	full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
-	if (!full_name)
-		return -ENOMEM;
-
-	ret = snd_soc_dapm_get_pin_status(dapm, full_name);
-	kfree(full_name);
-
-	return ret;
+	return soc_component_pin(component, pin, snd_soc_dapm_get_pin_status);
 }
 EXPORT_SYMBOL_GPL(snd_soc_component_get_pin_status);
 
 int snd_soc_component_force_enable_pin(struct snd_soc_component *component,
 				       const char *pin)
 {
-	struct snd_soc_dapm_context *dapm =
-		snd_soc_component_get_dapm(component);
-	char *full_name;
-	int ret;
-
-	if (!component->name_prefix)
-		return snd_soc_dapm_force_enable_pin(dapm, pin);
-
-	full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
-	if (!full_name)
-		return -ENOMEM;
-
-	ret = snd_soc_dapm_force_enable_pin(dapm, full_name);
-	kfree(full_name);
-
-	return ret;
+	return soc_component_pin(component, pin, snd_soc_dapm_force_enable_pin);
 }
 EXPORT_SYMBOL_GPL(snd_soc_component_force_enable_pin);
 
@@ -257,22 +213,7 @@ int snd_soc_component_force_enable_pin_unlocked(
 	struct snd_soc_component *component,
 	const char *pin)
 {
-	struct snd_soc_dapm_context *dapm =
-		snd_soc_component_get_dapm(component);
-	char *full_name;
-	int ret;
-
-	if (!component->name_prefix)
-		return snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
-
-	full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
-	if (!full_name)
-		return -ENOMEM;
-
-	ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, full_name);
-	kfree(full_name);
-
-	return ret;
+	return soc_component_pin(component, pin, snd_soc_dapm_force_enable_pin_unlocked);
 }
 EXPORT_SYMBOL_GPL(snd_soc_component_force_enable_pin_unlocked);
 
@@ -287,21 +228,25 @@ EXPORT_SYMBOL_GPL(snd_soc_component_force_enable_pin_unlocked);
 int snd_soc_component_set_jack(struct snd_soc_component *component,
 			       struct snd_soc_jack *jack, void *data)
 {
+	int ret = -ENOTSUPP;
+
 	if (component->driver->set_jack)
-		return component->driver->set_jack(component, jack, data);
+		ret = component->driver->set_jack(component, jack, data);
 
-	return -ENOTSUPP;
+	return soc_component_ret(component, ret);
 }
 EXPORT_SYMBOL_GPL(snd_soc_component_set_jack);
 
 int snd_soc_component_module_get(struct snd_soc_component *component,
 				 int upon_open)
 {
+	int ret = 0;
+
 	if (component->driver->module_get_upon_open == !!upon_open &&
 	    !try_module_get(component->dev->driver->owner))
-		return -ENODEV;
+		ret = -ENODEV;
 
-	return 0;
+	return soc_component_ret(component, ret);
 }
 
 void snd_soc_component_module_put(struct snd_soc_component *component,
@@ -314,52 +259,23 @@ void snd_soc_component_module_put(struct snd_soc_component *component,
 int snd_soc_component_open(struct snd_soc_component *component,
 			   struct snd_pcm_substream *substream)
 {
+	int ret = 0;
+
 	if (component->driver->open)
-		return component->driver->open(component, substream);
-	return 0;
+		ret = component->driver->open(component, substream);
+
+	return soc_component_ret(component, ret);
 }
 
 int snd_soc_component_close(struct snd_soc_component *component,
 			    struct snd_pcm_substream *substream)
 {
-	if (component->driver->close)
-		return component->driver->close(component, substream);
-	return 0;
-}
+	int ret = 0;
 
-int snd_soc_component_prepare(struct snd_soc_component *component,
-			      struct snd_pcm_substream *substream)
-{
-	if (component->driver->prepare)
-		return component->driver->prepare(component, substream);
-	return 0;
-}
-
-int snd_soc_component_hw_params(struct snd_soc_component *component,
-				struct snd_pcm_substream *substream,
-				struct snd_pcm_hw_params *params)
-{
-	if (component->driver->hw_params)
-		return component->driver->hw_params(component,
-						    substream, params);
-	return 0;
-}
-
-int snd_soc_component_hw_free(struct snd_soc_component *component,
-			       struct snd_pcm_substream *substream)
-{
-	if (component->driver->hw_free)
-		return component->driver->hw_free(component, substream);
-	return 0;
-}
+	if (component->driver->close)
+		ret = component->driver->close(component, substream);
 
-int snd_soc_component_trigger(struct snd_soc_component *component,
-			      struct snd_pcm_substream *substream,
-			      int cmd)
-{
-	if (component->driver->trigger)
-		return component->driver->trigger(component, substream, cmd);
-	return 0;
+	return soc_component_ret(component, ret);
 }
 
 void snd_soc_component_suspend(struct snd_soc_component *component)
@@ -383,10 +299,12 @@ int snd_soc_component_is_suspended(struct snd_soc_component *component)
 
 int snd_soc_component_probe(struct snd_soc_component *component)
 {
+	int ret = 0;
+
 	if (component->driver->probe)
-		return component->driver->probe(component);
+		ret = component->driver->probe(component);
 
-	return 0;
+	return soc_component_ret(component, ret);
 }
 
 void snd_soc_component_remove(struct snd_soc_component *component)
@@ -398,10 +316,12 @@ void snd_soc_component_remove(struct snd_soc_component *component)
 int snd_soc_component_of_xlate_dai_id(struct snd_soc_component *component,
 				      struct device_node *ep)
 {
+	int ret = -ENOTSUPP;
+
 	if (component->driver->of_xlate_dai_id)
-		return component->driver->of_xlate_dai_id(component, ep);
+		ret = component->driver->of_xlate_dai_id(component, ep);
 
-	return -ENOTSUPP;
+	return soc_component_ret(component, ret);
 }
 
 int snd_soc_component_of_xlate_dai_name(struct snd_soc_component *component,
@@ -410,13 +330,269 @@ int snd_soc_component_of_xlate_dai_name(struct snd_soc_component *component,
 {
 	if (component->driver->of_xlate_dai_name)
 		return component->driver->of_xlate_dai_name(component,
-						     args, dai_name);
+							    args, dai_name);
+	/*
+	 * Don't use soc_component_ret here because we may not want to report
+	 * the error just yet. If a device has more than one component, the
+	 * first may not match and we don't want spam the log with this.
+	 */
 	return -ENOTSUPP;
 }
 
+void snd_soc_component_setup_regmap(struct snd_soc_component *component)
+{
+	int val_bytes = regmap_get_val_bytes(component->regmap);
+
+	/* Errors are legitimate for non-integer byte multiples */
+	if (val_bytes > 0)
+		component->val_bytes = val_bytes;
+}
+
+#ifdef CONFIG_REGMAP
+
+/**
+ * snd_soc_component_init_regmap() - Initialize regmap instance for the
+ *                                   component
+ * @component: The component for which to initialize the regmap instance
+ * @regmap: The regmap instance that should be used by the component
+ *
+ * This function allows deferred assignment of the regmap instance that is
+ * associated with the component. Only use this if the regmap instance is not
+ * yet ready when the component is registered. The function must also be called
+ * before the first IO attempt of the component.
+ */
+void snd_soc_component_init_regmap(struct snd_soc_component *component,
+				   struct regmap *regmap)
+{
+	component->regmap = regmap;
+	snd_soc_component_setup_regmap(component);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap);
+
+/**
+ * snd_soc_component_exit_regmap() - De-initialize regmap instance for the
+ *                                   component
+ * @component: The component for which to de-initialize the regmap instance
+ *
+ * Calls regmap_exit() on the regmap instance associated to the component and
+ * removes the regmap instance from the component.
+ *
+ * This function should only be used if snd_soc_component_init_regmap() was used
+ * to initialize the regmap instance.
+ */
+void snd_soc_component_exit_regmap(struct snd_soc_component *component)
+{
+	regmap_exit(component->regmap);
+	component->regmap = NULL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap);
+
+#endif
+
+static unsigned int soc_component_read_no_lock(
+	struct snd_soc_component *component,
+	unsigned int reg)
+{
+	int ret;
+	unsigned int val = 0;
+
+	if (component->regmap)
+		ret = regmap_read(component->regmap, reg, &val);
+	else if (component->driver->read) {
+		ret = 0;
+		val = component->driver->read(component, reg);
+	}
+	else
+		ret = -EIO;
+
+	if (ret < 0)
+		soc_component_ret(component, ret);
+
+	return val;
+}
+
+/**
+ * snd_soc_component_read() - Read register value
+ * @component: Component to read from
+ * @reg: Register to read
+ *
+ * Return: read value
+ */
+unsigned int snd_soc_component_read(struct snd_soc_component *component,
+				    unsigned int reg)
+{
+	unsigned int val;
+
+	mutex_lock(&component->io_mutex);
+	val = soc_component_read_no_lock(component, reg);
+	mutex_unlock(&component->io_mutex);
+
+	return val;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_read);
+
+static int soc_component_write_no_lock(
+	struct snd_soc_component *component,
+	unsigned int reg, unsigned int val)
+{
+	int ret = -EIO;
+
+	if (component->regmap)
+		ret = regmap_write(component->regmap, reg, val);
+	else if (component->driver->write)
+		ret = component->driver->write(component, reg, val);
+
+	return soc_component_ret(component, ret);
+}
+
+/**
+ * snd_soc_component_write() - Write register value
+ * @component: Component to write to
+ * @reg: Register to write
+ * @val: Value to write to the register
+ *
+ * Return: 0 on success, a negative error code otherwise.
+ */
+int snd_soc_component_write(struct snd_soc_component *component,
+			    unsigned int reg, unsigned int val)
+{
+	int ret;
+
+	mutex_lock(&component->io_mutex);
+	ret = soc_component_write_no_lock(component, reg, val);
+	mutex_unlock(&component->io_mutex);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_write);
+
+static int snd_soc_component_update_bits_legacy(
+	struct snd_soc_component *component, unsigned int reg,
+	unsigned int mask, unsigned int val, bool *change)
+{
+	unsigned int old, new;
+	int ret = 0;
+
+	mutex_lock(&component->io_mutex);
+
+	old = soc_component_read_no_lock(component, reg);
+
+	new = (old & ~mask) | (val & mask);
+	*change = old != new;
+	if (*change)
+		ret = soc_component_write_no_lock(component, reg, new);
+
+	mutex_unlock(&component->io_mutex);
+
+	return soc_component_ret(component, ret);
+}
+
+/**
+ * snd_soc_component_update_bits() - Perform read/modify/write cycle
+ * @component: Component to update
+ * @reg: Register to update
+ * @mask: Mask that specifies which bits to update
+ * @val: New value for the bits specified by mask
+ *
+ * Return: 1 if the operation was successful and the value of the register
+ * changed, 0 if the operation was successful, but the value did not change.
+ * Returns a negative error code otherwise.
+ */
+int snd_soc_component_update_bits(struct snd_soc_component *component,
+				  unsigned int reg, unsigned int mask, unsigned int val)
+{
+	bool change;
+	int ret;
+
+	if (component->regmap)
+		ret = regmap_update_bits_check(component->regmap, reg, mask,
+					       val, &change);
+	else
+		ret = snd_soc_component_update_bits_legacy(component, reg,
+							   mask, val, &change);
+
+	if (ret < 0)
+		return soc_component_ret(component, ret);
+	return change;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_update_bits);
+
+/**
+ * snd_soc_component_update_bits_async() - Perform asynchronous
+ *  read/modify/write cycle
+ * @component: Component to update
+ * @reg: Register to update
+ * @mask: Mask that specifies which bits to update
+ * @val: New value for the bits specified by mask
+ *
+ * This function is similar to snd_soc_component_update_bits(), but the update
+ * operation is scheduled asynchronously. This means it may not be completed
+ * when the function returns. To make sure that all scheduled updates have been
+ * completed snd_soc_component_async_complete() must be called.
+ *
+ * Return: 1 if the operation was successful and the value of the register
+ * changed, 0 if the operation was successful, but the value did not change.
+ * Returns a negative error code otherwise.
+ */
+int snd_soc_component_update_bits_async(struct snd_soc_component *component,
+					unsigned int reg, unsigned int mask, unsigned int val)
+{
+	bool change;
+	int ret;
+
+	if (component->regmap)
+		ret = regmap_update_bits_check_async(component->regmap, reg,
+						     mask, val, &change);
+	else
+		ret = snd_soc_component_update_bits_legacy(component, reg,
+							   mask, val, &change);
+
+	if (ret < 0)
+		return soc_component_ret(component, ret);
+	return change;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_update_bits_async);
+
+/**
+ * snd_soc_component_async_complete() - Ensure asynchronous I/O has completed
+ * @component: Component for which to wait
+ *
+ * This function blocks until all asynchronous I/O which has previously been
+ * scheduled using snd_soc_component_update_bits_async() has completed.
+ */
+void snd_soc_component_async_complete(struct snd_soc_component *component)
+{
+	if (component->regmap)
+		regmap_async_complete(component->regmap);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_async_complete);
+
+/**
+ * snd_soc_component_test_bits - Test register for change
+ * @component: component
+ * @reg: Register to test
+ * @mask: Mask that specifies which bits to test
+ * @value: Value to test against
+ *
+ * Tests a register with a new value and checks if the new value is
+ * different from the old value.
+ *
+ * Return: 1 for change, otherwise 0.
+ */
+int snd_soc_component_test_bits(struct snd_soc_component *component,
+				unsigned int reg, unsigned int mask, unsigned int value)
+{
+	unsigned int old, new;
+
+	old = snd_soc_component_read(component, reg);
+	new = (old & ~mask) | value;
+	return old != new;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_test_bits);
+
 int snd_soc_pcm_component_pointer(struct snd_pcm_substream *substream)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	struct snd_soc_component *component;
 	int i;
 
@@ -431,22 +607,24 @@ int snd_soc_pcm_component_pointer(struct snd_pcm_substream *substream)
 int snd_soc_pcm_component_ioctl(struct snd_pcm_substream *substream,
 				unsigned int cmd, void *arg)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	struct snd_soc_component *component;
 	int i;
 
 	/* FIXME: use 1st ioctl */
 	for_each_rtd_components(rtd, i, component)
 		if (component->driver->ioctl)
-			return component->driver->ioctl(component, substream,
-							cmd, arg);
+			return soc_component_ret(
+				component,
+				component->driver->ioctl(component,
+							 substream, cmd, arg));
 
 	return snd_pcm_lib_ioctl(substream, cmd, arg);
 }
 
 int snd_soc_pcm_component_sync_stop(struct snd_pcm_substream *substream)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	struct snd_soc_component *component;
 	int i, ret;
 
@@ -455,7 +633,7 @@ int snd_soc_pcm_component_sync_stop(struct snd_pcm_substream *substream)
 			ret = component->driver->sync_stop(component,
 							   substream);
 			if (ret < 0)
-				return ret;
+				return soc_component_ret(component, ret);
 		}
 	}
 
@@ -466,15 +644,18 @@ int snd_soc_pcm_component_copy_user(struct snd_pcm_substream *substream,
 				    int channel, unsigned long pos,
 				    void __user *buf, unsigned long bytes)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	struct snd_soc_component *component;
 	int i;
 
 	/* FIXME. it returns 1st copy now */
 	for_each_rtd_components(rtd, i, component)
 		if (component->driver->copy_user)
-			return component->driver->copy_user(
-				component, substream, channel, pos, buf, bytes);
+			return soc_component_ret(
+				component,
+				component->driver->copy_user(
+					component, substream, channel,
+					pos, buf, bytes));
 
 	return -EINVAL;
 }
@@ -482,7 +663,7 @@ int snd_soc_pcm_component_copy_user(struct snd_pcm_substream *substream,
 struct page *snd_soc_pcm_component_page(struct snd_pcm_substream *substream,
 					unsigned long offset)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	struct snd_soc_component *component;
 	struct page *page;
 	int i;
@@ -503,15 +684,17 @@ struct page *snd_soc_pcm_component_page(struct snd_pcm_substream *substream,
 int snd_soc_pcm_component_mmap(struct snd_pcm_substream *substream,
 			       struct vm_area_struct *vma)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	struct snd_soc_component *component;
 	int i;
 
 	/* FIXME. it returns 1st mmap now */
 	for_each_rtd_components(rtd, i, component)
 		if (component->driver->mmap)
-			return component->driver->mmap(component,
-						       substream, vma);
+			return soc_component_ret(
+				component,
+				component->driver->mmap(component,
+							substream, vma));
 
 	return -EINVAL;
 }
@@ -526,7 +709,7 @@ int snd_soc_pcm_component_new(struct snd_soc_pcm_runtime *rtd)
 		if (component->driver->pcm_construct) {
 			ret = component->driver->pcm_construct(component, rtd);
 			if (ret < 0)
-				return ret;
+				return soc_component_ret(component, ret);
 		}
 	}
 
@@ -545,3 +728,80 @@ void snd_soc_pcm_component_free(struct snd_soc_pcm_runtime *rtd)
 		if (component->driver->pcm_destruct)
 			component->driver->pcm_destruct(component, rtd->pcm);
 }
+
+int snd_soc_pcm_component_prepare(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct snd_soc_component *component;
+	int i, ret;
+
+	for_each_rtd_components(rtd, i, component) {
+		if (component->driver->prepare) {
+			ret = component->driver->prepare(component, substream);
+			if (ret < 0)
+				return soc_component_ret(component, ret);
+		}
+	}
+
+	return 0;
+}
+
+int snd_soc_pcm_component_hw_params(struct snd_pcm_substream *substream,
+				    struct snd_pcm_hw_params *params,
+				    struct snd_soc_component **last)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct snd_soc_component *component;
+	int i, ret;
+
+	for_each_rtd_components(rtd, i, component) {
+		if (component->driver->hw_params) {
+			ret = component->driver->hw_params(component,
+							   substream, params);
+			if (ret < 0) {
+				*last = component;
+				return soc_component_ret(component, ret);
+			}
+		}
+	}
+
+	*last = NULL;
+	return 0;
+}
+
+void snd_soc_pcm_component_hw_free(struct snd_pcm_substream *substream,
+				   struct snd_soc_component *last)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct snd_soc_component *component;
+	int i, ret;
+
+	for_each_rtd_components(rtd, i, component) {
+		if (component == last)
+			break;
+
+		if (component->driver->hw_free) {
+			ret = component->driver->hw_free(component, substream);
+			if (ret < 0)
+				soc_component_ret(component, ret);
+		}
+	}
+}
+
+int snd_soc_pcm_component_trigger(struct snd_pcm_substream *substream,
+				  int cmd)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct snd_soc_component *component;
+	int i, ret;
+
+	for_each_rtd_components(rtd, i, component) {
+		if (component->driver->trigger) {
+			ret = component->driver->trigger(component, substream, cmd);
+			if (ret < 0)
+				return soc_component_ret(component, ret);
+		}
+	}
+
+	return 0;
+}