Merge remote-tracking branch 'asoc/topic/core' into asoc-next

include/sound/soc-dai.h

@@ -268,7 +268,6 @@ struct snd_soc_dai {
 	unsigned int sample_bits;
 
 	/* parent platform/codec */
-	struct snd_soc_platform *platform;
 	struct snd_soc_codec *codec;
 	struct snd_soc_component *component;
 
@@ -276,8 +275,6 @@ struct snd_soc_dai {
 	unsigned int tx_mask;
 	unsigned int rx_mask;
 
-	struct snd_soc_card *card;
-
 	struct list_head list;
 };
 

include/sound/soc-dapm.h

@@ -435,7 +435,7 @@ void snd_soc_dapm_auto_nc_pins(struct snd_soc_card *card);
 unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol);
 
 /* Mostly internal - should not normally be used */
-void dapm_mark_io_dirty(struct snd_soc_dapm_context *dapm);
+void dapm_mark_endpoints_dirty(struct snd_soc_card *card);
 
 /* dapm path query */
 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
@@ -508,9 +508,9 @@ struct snd_soc_dapm_path {
 
 	/* status */
 	u32 connect:1;	/* source and sink widgets are connected */
-	u32 walked:1;	/* path has been walked */
 	u32 walking:1;  /* path is in the process of being walked */
 	u32 weak:1;	/* path ignored for power management */
+	u32 is_supply:1;	/* At least one of the connected widgets is a supply */
 
 	int (*connected)(struct snd_soc_dapm_widget *source,
 			 struct snd_soc_dapm_widget *sink);
@@ -544,11 +544,13 @@ struct snd_soc_dapm_widget {
 	unsigned char active:1;			/* active stream on DAC, ADC's */
 	unsigned char connected:1;		/* connected codec pin */
 	unsigned char new:1;			/* cnew complete */
-	unsigned char ext:1;			/* has external widgets */
 	unsigned char force:1;			/* force state */
 	unsigned char ignore_suspend:1;         /* kept enabled over suspend */
 	unsigned char new_power:1;		/* power from this run */
 	unsigned char power_checked:1;		/* power checked this run */
+	unsigned char is_supply:1;		/* Widget is a supply type widget */
+	unsigned char is_sink:1;		/* Widget is a sink type widget */
+	unsigned char is_source:1;		/* Widget is a source type widget */
 	int subseq;				/* sort within widget type */
 
 	int (*power_check)(struct snd_soc_dapm_widget *w);
@@ -567,6 +569,7 @@ struct snd_soc_dapm_widget {
 	struct list_head sinks;
 
 	/* used during DAPM updates */
+	struct list_head work_list;
 	struct list_head power_list;
 	struct list_head dirty;
 	int inputs;

include/sound/soc.h

@@ -36,6 +36,11 @@
 	{.reg = xreg, .rreg = xreg, .shift = shift_left, \
 	.rshift = shift_right, .max = xmax, .platform_max = xmax, \
 	.invert = xinvert, .autodisable = xautodisable})
+#define SOC_DOUBLE_S_VALUE(xreg, shift_left, shift_right, xmin, xmax, xsign_bit, xinvert, xautodisable) \
+	((unsigned long)&(struct soc_mixer_control) \
+	{.reg = xreg, .rreg = xreg, .shift = shift_left, \
+	.rshift = shift_right, .min = xmin, .max = xmax, .platform_max = xmax, \
+	.sign_bit = xsign_bit, .invert = xinvert, .autodisable = xautodisable})
 #define SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert, xautodisable) \
 	SOC_DOUBLE_VALUE(xreg, xshift, xshift, xmax, xinvert, xautodisable)
 #define SOC_SINGLE_VALUE_EXT(xreg, xmax, xinvert) \
@@ -171,11 +176,9 @@
 	.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 		  SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 	.tlv.p  = (tlv_array), \
-	.info   = snd_soc_info_volsw_s8, .get = snd_soc_get_volsw_s8, \
-	.put    = snd_soc_put_volsw_s8, \
-	.private_value = (unsigned long)&(struct soc_mixer_control) \
-		{.reg = xreg, .min = xmin, .max = xmax, \
-		 .platform_max = xmax} }
+	.info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
+	.put = snd_soc_put_volsw, \
+	.private_value = SOC_DOUBLE_S_VALUE(xreg, 0, 8, xmin, xmax, 7, 0, 0) }
 #define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xitems, xtexts) \
 {	.reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
 	.items = xitems, .texts = xtexts, \
@@ -541,12 +544,6 @@ int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol);
 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol);
-int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_info *uinfo);
-int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_value *ucontrol);
-int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_value *ucontrol);
 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_info *uinfo);
 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
@@ -854,8 +851,6 @@ struct snd_soc_platform_driver {
 
 	int (*probe)(struct snd_soc_platform *);
 	int (*remove)(struct snd_soc_platform *);
-	int (*suspend)(struct snd_soc_dai *dai);
-	int (*resume)(struct snd_soc_dai *dai);
 	struct snd_soc_component_driver component_driver;
 
 	/* pcm creation and destruction */
@@ -880,7 +875,7 @@ struct snd_soc_platform_driver {
 
 struct snd_soc_dai_link_component {
 	const char *name;
-	const struct device_node *of_node;
+	struct device_node *of_node;
 	const char *dai_name;
 };
 
@@ -888,8 +883,6 @@ struct snd_soc_platform {
 	struct device *dev;
 	const struct snd_soc_platform_driver *driver;
 
-	unsigned int suspended:1; /* platform is suspended */
-
 	struct list_head list;
 
 	struct snd_soc_component component;
@@ -984,7 +977,7 @@ struct snd_soc_codec_conf {
 	 * DT/OF node, but not both.
 	 */
 	const char *dev_name;
-	const struct device_node *of_node;
+	struct device_node *of_node;
 
 	/*
 	 * optional map of kcontrol, widget and path name prefixes that are
@@ -1001,7 +994,7 @@ struct snd_soc_aux_dev {
 	 * DT/OF node, but not both.
 	 */
 	const char *codec_name;
-	const struct device_node *codec_of_node;
+	struct device_node *codec_of_node;
 
 	/* codec/machine specific init - e.g. add machine controls */
 	int (*init)(struct snd_soc_component *component);

sound/soc/Makefile

 snd-soc-core-objs := soc-core.o soc-dapm.o soc-jack.o soc-cache.o soc-utils.o
-snd-soc-core-objs += soc-pcm.o soc-compress.o soc-io.o soc-devres.o
+snd-soc-core-objs += soc-pcm.o soc-compress.o soc-io.o soc-devres.o soc-ops.o
 
 ifneq ($(CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM),)
 snd-soc-core-objs += soc-generic-dmaengine-pcm.o

sound/soc/soc-core.c

@@ -589,17 +589,12 @@ int snd_soc_suspend(struct device *dev)
 
 	for (i = 0; i < card->num_rtd; i++) {
 		struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
-		struct snd_soc_platform *platform = card->rtd[i].platform;
 
 		if (card->rtd[i].dai_link->ignore_suspend)
 			continue;
 
 		if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
 			cpu_dai->driver->suspend(cpu_dai);
-		if (platform->driver->suspend && !platform->suspended) {
-			platform->driver->suspend(cpu_dai);
-			platform->suspended = 1;
-		}
 	}
 
 	/* close any waiting streams and save state */
@@ -626,8 +621,8 @@ int snd_soc_suspend(struct device *dev)
 					  SND_SOC_DAPM_STREAM_SUSPEND);
 	}
 
-	/* Recheck all analogue paths too */
-	dapm_mark_io_dirty(&card->dapm);
+	/* Recheck all endpoints too, their state is affected by suspend */
+	dapm_mark_endpoints_dirty(card);
 	snd_soc_dapm_sync(&card->dapm);
 
 	/* suspend all CODECs */
@@ -771,17 +766,12 @@ static void soc_resume_deferred(struct work_struct *work)
 
 	for (i = 0; i < card->num_rtd; i++) {
 		struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
-		struct snd_soc_platform *platform = card->rtd[i].platform;
 
 		if (card->rtd[i].dai_link->ignore_suspend)
 			continue;
 
 		if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
 			cpu_dai->driver->resume(cpu_dai);
-		if (platform->driver->resume && platform->suspended) {
-			platform->driver->resume(cpu_dai);
-			platform->suspended = 0;
-		}
 	}
 
 	if (card->resume_post)
@@ -792,8 +782,8 @@ static void soc_resume_deferred(struct work_struct *work)
 	/* userspace can access us now we are back as we were before */
 	snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
 
-	/* Recheck all analogue paths too */
-	dapm_mark_io_dirty(&card->dapm);
+	/* Recheck all endpoints too, their state is affected by suspend */
+	dapm_mark_endpoints_dirty(card);
 	snd_soc_dapm_sync(&card->dapm);
 }
 
@@ -1247,25 +1237,22 @@ static int soc_probe_link_components(struct snd_soc_card *card, int num,
 	return 0;
 }
 
-static int soc_probe_codec_dai(struct snd_soc_card *card,
-			       struct snd_soc_dai *codec_dai,
-			       int order)
+static int soc_probe_dai(struct snd_soc_dai *dai, int order)
 {
 	int ret;
 
-	if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
-		if (codec_dai->driver->probe) {
-			ret = codec_dai->driver->probe(codec_dai);
+	if (!dai->probed && dai->driver->probe_order == order) {
+		if (dai->driver->probe) {
+			ret = dai->driver->probe(dai);
 			if (ret < 0) {
-				dev_err(codec_dai->dev,
-					"ASoC: failed to probe CODEC DAI %s: %d\n",
-					codec_dai->name, ret);
+				dev_err(dai->dev,
+					"ASoC: failed to probe DAI %s: %d\n",
+					dai->name, ret);
 				return ret;
 			}
 		}
 
-		/* mark codec_dai as probed and add to card dai list */
-		codec_dai->probed = 1;
+		dai->probed = 1;
 	}
 
 	return 0;
@@ -1315,40 +1302,22 @@ static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
 {
 	struct snd_soc_dai_link *dai_link = &card->dai_link[num];
 	struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
-	struct snd_soc_platform *platform = rtd->platform;
 	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 	int i, ret;
 
 	dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
 			card->name, num, order);
 
-	/* config components */
-	cpu_dai->platform = platform;
-	cpu_dai->card = card;
-	for (i = 0; i < rtd->num_codecs; i++)
-		rtd->codec_dais[i]->card = card;
-
 	/* set default power off timeout */
 	rtd->pmdown_time = pmdown_time;
 
-	/* probe the cpu_dai */
-	if (!cpu_dai->probed &&
-			cpu_dai->driver->probe_order == order) {
-		if (cpu_dai->driver->probe) {
-			ret = cpu_dai->driver->probe(cpu_dai);
-			if (ret < 0) {
-				dev_err(cpu_dai->dev,
-					"ASoC: failed to probe CPU DAI %s: %d\n",
-					cpu_dai->name, ret);
-				return ret;
-			}
-		}
-		cpu_dai->probed = 1;
-	}
+	ret = soc_probe_dai(cpu_dai, order);
+	if (ret)
+		return ret;
 
 	/* probe the CODEC DAI */
 	for (i = 0; i < rtd->num_codecs; i++) {
-		ret = soc_probe_codec_dai(card, rtd->codec_dais[i], order);
+		ret = soc_probe_dai(rtd->codec_dais[i], order);
 		if (ret)
 			return ret;
 	}
@@ -2322,1027 +2291,13 @@ EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
 	const struct snd_kcontrol_new *controls, int num_controls)
 {
-	struct snd_card *card = dai->card->snd_card;
+	struct snd_card *card = dai->component->card->snd_card;
 
 	return snd_soc_add_controls(card, dai->dev, controls, num_controls,
 			NULL, dai);
 }
 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
 
-/**
- * snd_soc_info_enum_double - enumerated double mixer info callback
- * @kcontrol: mixer control
- * @uinfo: control element information
- *
- * Callback to provide information about a double enumerated
- * mixer control.
- *
- * Returns 0 for success.
- */
-int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_info *uinfo)
-{
-	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
-
-	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
-	uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
-	uinfo->value.enumerated.items = e->items;
-
-	if (uinfo->value.enumerated.item >= e->items)
-		uinfo->value.enumerated.item = e->items - 1;
-	strlcpy(uinfo->value.enumerated.name,
-		e->texts[uinfo->value.enumerated.item],
-		sizeof(uinfo->value.enumerated.name));
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
-
-/**
- * snd_soc_get_enum_double - enumerated double mixer get callback
- * @kcontrol: mixer control
- * @ucontrol: control element information
- *
- * Callback to get the value of a double enumerated mixer.
- *
- * Returns 0 for success.
- */
-int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
-	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
-	unsigned int val, item;
-	unsigned int reg_val;
-	int ret;
-
-	ret = snd_soc_component_read(component, e->reg, &reg_val);
-	if (ret)
-		return ret;
-	val = (reg_val >> e->shift_l) & e->mask;
-	item = snd_soc_enum_val_to_item(e, val);
-	ucontrol->value.enumerated.item[0] = item;
-	if (e->shift_l != e->shift_r) {
-		val = (reg_val >> e->shift_l) & e->mask;
-		item = snd_soc_enum_val_to_item(e, val);
-		ucontrol->value.enumerated.item[1] = item;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
-
-/**
- * snd_soc_put_enum_double - enumerated double mixer put callback
- * @kcontrol: mixer control
- * @ucontrol: control element information
- *
- * Callback to set the value of a double enumerated mixer.
- *
- * Returns 0 for success.
- */
-int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
-	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
-	unsigned int *item = ucontrol->value.enumerated.item;
-	unsigned int val;
-	unsigned int mask;
-
-	if (item[0] >= e->items)
-		return -EINVAL;
-	val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
-	mask = e->mask << e->shift_l;
-	if (e->shift_l != e->shift_r) {
-		if (item[1] >= e->items)
-			return -EINVAL;
-		val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
-		mask |= e->mask << e->shift_r;
-	}
-
-	return snd_soc_component_update_bits(component, e->reg, mask, val);
-}
-EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
-
-/**
- * snd_soc_read_signed - Read a codec register and interprete as signed value
- * @component: component
- * @reg: Register to read
- * @mask: Mask to use after shifting the register value
- * @shift: Right shift of register value
- * @sign_bit: Bit that describes if a number is negative or not.
- * @signed_val: Pointer to where the read value should be stored
- *
- * This functions reads a codec register. The register value is shifted right
- * by 'shift' bits and masked with the given 'mask'. Afterwards it translates
- * the given registervalue into a signed integer if sign_bit is non-zero.
- *
- * Returns 0 on sucess, otherwise an error value
- */
-static int snd_soc_read_signed(struct snd_soc_component *component,
-	unsigned int reg, unsigned int mask, unsigned int shift,
-	unsigned int sign_bit, int *signed_val)
-{
-	int ret;
-	unsigned int val;
-
-	ret = snd_soc_component_read(component, reg, &val);
-	if (ret < 0)
-		return ret;
-
-	val = (val >> shift) & mask;
-
-	if (!sign_bit) {
-		*signed_val = val;
-		return 0;
-	}
-
-	/* non-negative number */
-	if (!(val & BIT(sign_bit))) {
-		*signed_val = val;
-		return 0;
-	}
-
-	ret = val;
-
-	/*
-	 * The register most probably does not contain a full-sized int.
-	 * Instead we have an arbitrary number of bits in a signed
-	 * representation which has to be translated into a full-sized int.
-	 * This is done by filling up all bits above the sign-bit.
-	 */
-	ret |= ~((int)(BIT(sign_bit) - 1));
-
-	*signed_val = ret;
-
-	return 0;
-}
-
-/**
- * snd_soc_info_volsw - single mixer info callback
- * @kcontrol: mixer control
- * @uinfo: control element information
- *
- * Callback to provide information about a single mixer control, or a double
- * mixer control that spans 2 registers.
- *
- * Returns 0 for success.
- */
-int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_info *uinfo)
-{
-	struct soc_mixer_control *mc =
-		(struct soc_mixer_control *)kcontrol->private_value;
-	int platform_max;
-
-	if (!mc->platform_max)
-		mc->platform_max = mc->max;
-	platform_max = mc->platform_max;
-
-	if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
-		uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
-	else
-		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
-
-	uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
-	uinfo->value.integer.min = 0;
-	uinfo->value.integer.max = platform_max - mc->min;
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
-
-/**
- * snd_soc_get_volsw - single mixer get callback
- * @kcontrol: mixer control
- * @ucontrol: control element information
- *
- * Callback to get the value of a single mixer control, or a double mixer
- * control that spans 2 registers.
- *
- * Returns 0 for success.
- */
-int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
-	struct soc_mixer_control *mc =
-		(struct soc_mixer_control *)kcontrol->private_value;
-	unsigned int reg = mc->reg;
-	unsigned int reg2 = mc->rreg;
-	unsigned int shift = mc->shift;
-	unsigned int rshift = mc->rshift;
-	int max = mc->max;
-	int min = mc->min;
-	int sign_bit = mc->sign_bit;
-	unsigned int mask = (1 << fls(max)) - 1;
-	unsigned int invert = mc->invert;
-	int val;
-	int ret;
-
-	if (sign_bit)
-		mask = BIT(sign_bit + 1) - 1;
-
-	ret = snd_soc_read_signed(component, reg, mask, shift, sign_bit, &val);
-	if (ret)
-		return ret;
-
-	ucontrol->value.integer.value[0] = val - min;
-	if (invert)
-		ucontrol->value.integer.value[0] =
-			max - ucontrol->value.integer.value[0];
-
-	if (snd_soc_volsw_is_stereo(mc)) {
-		if (reg == reg2)
-			ret = snd_soc_read_signed(component, reg, mask, rshift,
-				sign_bit, &val);
-		else
-			ret = snd_soc_read_signed(component, reg2, mask, shift,
-				sign_bit, &val);
-		if (ret)
-			return ret;
-
-		ucontrol->value.integer.value[1] = val - min;
-		if (invert)
-			ucontrol->value.integer.value[1] =
-				max - ucontrol->value.integer.value[1];
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
-
-/**
- * snd_soc_put_volsw - single mixer put callback
- * @kcontrol: mixer control
- * @ucontrol: control element information
- *
- * Callback to set the value of a single mixer control, or a double mixer
- * control that spans 2 registers.
- *
- * Returns 0 for success.
- */
-int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
-	struct soc_mixer_control *mc =
-		(struct soc_mixer_control *)kcontrol->private_value;
-	unsigned int reg = mc->reg;
-	unsigned int reg2 = mc->rreg;
-	unsigned int shift = mc->shift;
-	unsigned int rshift = mc->rshift;
-	int max = mc->max;
-	int min = mc->min;
-	unsigned int sign_bit = mc->sign_bit;
-	unsigned int mask = (1 << fls(max)) - 1;
-	unsigned int invert = mc->invert;
-	int err;
-	bool type_2r = false;
-	unsigned int val2 = 0;
-	unsigned int val, val_mask;
-
-	if (sign_bit)
-		mask = BIT(sign_bit + 1) - 1;
-
-	val = ((ucontrol->value.integer.value[0] + min) & mask);
-	if (invert)
-		val = max - val;
-	val_mask = mask << shift;
-	val = val << shift;
-	if (snd_soc_volsw_is_stereo(mc)) {
-		val2 = ((ucontrol->value.integer.value[1] + min) & mask);
-		if (invert)
-			val2 = max - val2;
-		if (reg == reg2) {
-			val_mask |= mask << rshift;
-			val |= val2 << rshift;
-		} else {
-			val2 = val2 << shift;
-			type_2r = true;
-		}
-	}
-	err = snd_soc_component_update_bits(component, reg, val_mask, val);
-	if (err < 0)
-		return err;
-
-	if (type_2r)
-		err = snd_soc_component_update_bits(component, reg2, val_mask,
-			val2);
-
-	return err;
-}
-EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
-
-/**
- * snd_soc_get_volsw_sx - single mixer get callback
- * @kcontrol: mixer control
- * @ucontrol: control element information
- *
- * Callback to get the value of a single mixer control, or a double mixer
- * control that spans 2 registers.
- *
- * Returns 0 for success.
- */
-int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
-		      struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
-	struct soc_mixer_control *mc =
-	    (struct soc_mixer_control *)kcontrol->private_value;
-	unsigned int reg = mc->reg;
-	unsigned int reg2 = mc->rreg;
-	unsigned int shift = mc->shift;
-	unsigned int rshift = mc->rshift;
-	int max = mc->max;
-	int min = mc->min;
-	int mask = (1 << (fls(min + max) - 1)) - 1;
-	unsigned int val;
-	int ret;
-
-	ret = snd_soc_component_read(component, reg, &val);
-	if (ret < 0)
-		return ret;
-
-	ucontrol->value.integer.value[0] = ((val >> shift) - min) & mask;
-
-	if (snd_soc_volsw_is_stereo(mc)) {
-		ret = snd_soc_component_read(component, reg2, &val);
-		if (ret < 0)
-			return ret;
-
-		val = ((val >> rshift) - min) & mask;
-		ucontrol->value.integer.value[1] = val;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
-
-/**
- * snd_soc_put_volsw_sx - double mixer set callback
- * @kcontrol: mixer control
- * @uinfo: control element information
- *
- * Callback to set the value of a double mixer control that spans 2 registers.
- *
- * Returns 0 for success.
- */
-int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
-			 struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
-	struct soc_mixer_control *mc =
-	    (struct soc_mixer_control *)kcontrol->private_value;
-
-	unsigned int reg = mc->reg;
-	unsigned int reg2 = mc->rreg;
-	unsigned int shift = mc->shift;
-	unsigned int rshift = mc->rshift;
-	int max = mc->max;
-	int min = mc->min;
-	int mask = (1 << (fls(min + max) - 1)) - 1;
-	int err = 0;
-	unsigned int val, val_mask, val2 = 0;
-
-	val_mask = mask << shift;
-	val = (ucontrol->value.integer.value[0] + min) & mask;
-	val = val << shift;
-
-	err = snd_soc_component_update_bits(component, reg, val_mask, val);
-	if (err < 0)
-		return err;
-
-	if (snd_soc_volsw_is_stereo(mc)) {
-		val_mask = mask << rshift;
-		val2 = (ucontrol->value.integer.value[1] + min) & mask;
-		val2 = val2 << rshift;
-
-		err = snd_soc_component_update_bits(component, reg2, val_mask,
-			val2);
-	}
-	return err;
-}
-EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
-
-/**
- * snd_soc_info_volsw_s8 - signed mixer info callback
- * @kcontrol: mixer control
- * @uinfo: control element information
- *
- * Callback to provide information about a signed mixer control.
- *
- * Returns 0 for success.
- */
-int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_info *uinfo)
-{
-	struct soc_mixer_control *mc =
-		(struct soc_mixer_control *)kcontrol->private_value;
-	int platform_max;
-	int min = mc->min;
-
-	if (!mc->platform_max)
-		mc->platform_max = mc->max;
-	platform_max = mc->platform_max;
-
-	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
-	uinfo->count = 2;
-	uinfo->value.integer.min = 0;
-	uinfo->value.integer.max = platform_max - min;
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
-
-/**
- * snd_soc_get_volsw_s8 - signed mixer get callback
- * @kcontrol: mixer control
- * @ucontrol: control element information
- *
- * Callback to get the value of a signed mixer control.
- *
- * Returns 0 for success.
- */
-int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_value *ucontrol)
-{
-	struct soc_mixer_control *mc =
-		(struct soc_mixer_control *)kcontrol->private_value;
-	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
-	unsigned int reg = mc->reg;
-	unsigned int val;
-	int min = mc->min;
-	int ret;
-
-	ret = snd_soc_component_read(component, reg, &val);
-	if (ret)
-		return ret;
-
-	ucontrol->value.integer.value[0] =
-		((signed char)(val & 0xff))-min;
-	ucontrol->value.integer.value[1] =
-		((signed char)((val >> 8) & 0xff))-min;
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
-
-/**
- * snd_soc_put_volsw_sgn - signed mixer put callback
- * @kcontrol: mixer control
- * @ucontrol: control element information
- *
- * Callback to set the value of a signed mixer control.
- *
- * Returns 0 for success.
- */
-int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_value *ucontrol)
-{
-	struct soc_mixer_control *mc =
-		(struct soc_mixer_control *)kcontrol->private_value;
-	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
-	unsigned int reg = mc->reg;
-	int min = mc->min;
-	unsigned int val;
-
-	val = (ucontrol->value.integer.value[0]+min) & 0xff;
-	val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
-
-	return snd_soc_component_update_bits(component, reg, 0xffff, val);
-}
-EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
-
-/**
- * snd_soc_info_volsw_range - single mixer info callback with range.
- * @kcontrol: mixer control
- * @uinfo: control element information
- *
- * Callback to provide information, within a range, about a single
- * mixer control.
- *
- * returns 0 for success.
- */
-int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_info *uinfo)
-{
-	struct soc_mixer_control *mc =
-		(struct soc_mixer_control *)kcontrol->private_value;
-	int platform_max;
-	int min = mc->min;
-
-	if (!mc->platform_max)
-		mc->platform_max = mc->max;
-	platform_max = mc->platform_max;
-
-	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
-	uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
-	uinfo->value.integer.min = 0;
-	uinfo->value.integer.max = platform_max - min;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
-
-/**
- * snd_soc_put_volsw_range - single mixer put value callback with range.
- * @kcontrol: mixer control
- * @ucontrol: control element information
- *
- * Callback to set the value, within a range, for a single mixer control.
- *
- * Returns 0 for success.
- */
-int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_value *ucontrol)
-{
-	struct soc_mixer_control *mc =
-		(struct soc_mixer_control *)kcontrol->private_value;
-	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
-	unsigned int reg = mc->reg;
-	unsigned int rreg = mc->rreg;
-	unsigned int shift = mc->shift;
-	int min = mc->min;
-	int max = mc->max;
-	unsigned int mask = (1 << fls(max)) - 1;
-	unsigned int invert = mc->invert;
-	unsigned int val, val_mask;
-	int ret;
-
-	if (invert)
-		val = (max - ucontrol->value.integer.value[0]) & mask;
-	else
-		val = ((ucontrol->value.integer.value[0] + min) & mask);
-	val_mask = mask << shift;
-	val = val << shift;
-
-	ret = snd_soc_component_update_bits(component, reg, val_mask, val);
-	if (ret < 0)
-		return ret;
-
-	if (snd_soc_volsw_is_stereo(mc)) {
-		if (invert)
-			val = (max - ucontrol->value.integer.value[1]) & mask;
-		else
-			val = ((ucontrol->value.integer.value[1] + min) & mask);
-		val_mask = mask << shift;
-		val = val << shift;
-
-		ret = snd_soc_component_update_bits(component, rreg, val_mask,
-			val);
-	}
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
-
-/**
- * snd_soc_get_volsw_range - single mixer get callback with range
- * @kcontrol: mixer control
- * @ucontrol: control element information
- *
- * Callback to get the value, within a range, of a single mixer control.
- *
- * Returns 0 for success.
- */
-int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
-	struct soc_mixer_control *mc =
-		(struct soc_mixer_control *)kcontrol->private_value;
-	unsigned int reg = mc->reg;
-	unsigned int rreg = mc->rreg;
-	unsigned int shift = mc->shift;
-	int min = mc->min;
-	int max = mc->max;
-	unsigned int mask = (1 << fls(max)) - 1;
-	unsigned int invert = mc->invert;
-	unsigned int val;
-	int ret;
-
-	ret = snd_soc_component_read(component, reg, &val);
-	if (ret)
-		return ret;
-
-	ucontrol->value.integer.value[0] = (val >> shift) & mask;
-	if (invert)
-		ucontrol->value.integer.value[0] =
-			max - ucontrol->value.integer.value[0];
-	else
-		ucontrol->value.integer.value[0] =
-			ucontrol->value.integer.value[0] - min;
-
-	if (snd_soc_volsw_is_stereo(mc)) {
-		ret = snd_soc_component_read(component, rreg, &val);
-		if (ret)
-			return ret;
-
-		ucontrol->value.integer.value[1] = (val >> shift) & mask;
-		if (invert)
-			ucontrol->value.integer.value[1] =
-				max - ucontrol->value.integer.value[1];
-		else
-			ucontrol->value.integer.value[1] =
-				ucontrol->value.integer.value[1] - min;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
-
-/**
- * snd_soc_limit_volume - Set new limit to an existing volume control.
- *
- * @codec: where to look for the control
- * @name: Name of the control
- * @max: new maximum limit
- *
- * Return 0 for success, else error.
- */
-int snd_soc_limit_volume(struct snd_soc_codec *codec,
-	const char *name, int max)
-{
-	struct snd_card *card = codec->component.card->snd_card;
-	struct snd_kcontrol *kctl;
-	struct soc_mixer_control *mc;
-	int found = 0;
-	int ret = -EINVAL;
-
-	/* Sanity check for name and max */
-	if (unlikely(!name || max <= 0))
-		return -EINVAL;
-
-	list_for_each_entry(kctl, &card->controls, list) {
-		if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
-			found = 1;
-			break;
-		}
-	}
-	if (found) {
-		mc = (struct soc_mixer_control *)kctl->private_value;
-		if (max <= mc->max) {
-			mc->platform_max = max;
-			ret = 0;
-		}
-	}
-	return ret;
-}
-EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
-
-int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
-		       struct snd_ctl_elem_info *uinfo)
-{
-	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
-	struct soc_bytes *params = (void *)kcontrol->private_value;
-
-	uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
-	uinfo->count = params->num_regs * component->val_bytes;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
-
-int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
-		      struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
-	struct soc_bytes *params = (void *)kcontrol->private_value;
-	int ret;
-
-	if (component->regmap)
-		ret = regmap_raw_read(component->regmap, params->base,
-				      ucontrol->value.bytes.data,
-				      params->num_regs * component->val_bytes);
-	else
-		ret = -EINVAL;
-
-	/* Hide any masked bytes to ensure consistent data reporting */
-	if (ret == 0 && params->mask) {
-		switch (component->val_bytes) {
-		case 1:
-			ucontrol->value.bytes.data[0] &= ~params->mask;
-			break;
-		case 2:
-			((u16 *)(&ucontrol->value.bytes.data))[0]
-				&= cpu_to_be16(~params->mask);
-			break;
-		case 4:
-			((u32 *)(&ucontrol->value.bytes.data))[0]
-				&= cpu_to_be32(~params->mask);
-			break;
-		default:
-			return -EINVAL;
-		}
-	}
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
-
-int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
-		      struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
-	struct soc_bytes *params = (void *)kcontrol->private_value;
-	int ret, len;
-	unsigned int val, mask;
-	void *data;
-
-	if (!component->regmap || !params->num_regs)
-		return -EINVAL;
-
-	len = params->num_regs * component->val_bytes;
-
-	data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
-	if (!data)
-		return -ENOMEM;
-
-	/*
-	 * If we've got a mask then we need to preserve the register
-	 * bits.  We shouldn't modify the incoming data so take a
-	 * copy.
-	 */
-	if (params->mask) {
-		ret = regmap_read(component->regmap, params->base, &val);
-		if (ret != 0)
-			goto out;
-
-		val &= params->mask;
-
-		switch (component->val_bytes) {
-		case 1:
-			((u8 *)data)[0] &= ~params->mask;
-			((u8 *)data)[0] |= val;
-			break;
-		case 2:
-			mask = ~params->mask;
-			ret = regmap_parse_val(component->regmap,
-							&mask, &mask);
-			if (ret != 0)
-				goto out;
-
-			((u16 *)data)[0] &= mask;
-
-			ret = regmap_parse_val(component->regmap,
-							&val, &val);
-			if (ret != 0)
-				goto out;
-
-			((u16 *)data)[0] |= val;
-			break;
-		case 4:
-			mask = ~params->mask;
-			ret = regmap_parse_val(component->regmap,
-							&mask, &mask);
-			if (ret != 0)
-				goto out;
-
-			((u32 *)data)[0] &= mask;
-
-			ret = regmap_parse_val(component->regmap,
-							&val, &val);
-			if (ret != 0)
-				goto out;
-
-			((u32 *)data)[0] |= val;
-			break;
-		default:
-			ret = -EINVAL;
-			goto out;
-		}
-	}
-
-	ret = regmap_raw_write(component->regmap, params->base,
-			       data, len);
-
-out:
-	kfree(data);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
-
-int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol,
-			struct snd_ctl_elem_info *ucontrol)
-{
-	struct soc_bytes_ext *params = (void *)kcontrol->private_value;
-
-	ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES;
-	ucontrol->count = params->max;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext);
-
-int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag,
-				unsigned int size, unsigned int __user *tlv)
-{
-	struct soc_bytes_ext *params = (void *)kcontrol->private_value;
-	unsigned int count = size < params->max ? size : params->max;
-	int ret = -ENXIO;
-
-	switch (op_flag) {
-	case SNDRV_CTL_TLV_OP_READ:
-		if (params->get)
-			ret = params->get(tlv, count);
-		break;
-	case SNDRV_CTL_TLV_OP_WRITE:
-		if (params->put)
-			ret = params->put(tlv, count);
-		break;
-	}
-	return ret;
-}
-EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback);
-
-/**
- * snd_soc_info_xr_sx - signed multi register info callback
- * @kcontrol: mreg control
- * @uinfo: control element information
- *
- * Callback to provide information of a control that can
- * span multiple codec registers which together
- * forms a single signed value in a MSB/LSB manner.
- *
- * Returns 0 for success.
- */
-int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_info *uinfo)
-{
-	struct soc_mreg_control *mc =
-		(struct soc_mreg_control *)kcontrol->private_value;
-	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
-	uinfo->count = 1;
-	uinfo->value.integer.min = mc->min;
-	uinfo->value.integer.max = mc->max;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
-
-/**
- * snd_soc_get_xr_sx - signed multi register get callback
- * @kcontrol: mreg control
- * @ucontrol: control element information
- *
- * Callback to get the value of a control that can span
- * multiple codec registers which together forms a single
- * signed value in a MSB/LSB manner. The control supports
- * specifying total no of bits used to allow for bitfields
- * across the multiple codec registers.
- *
- * Returns 0 for success.
- */
-int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
-	struct soc_mreg_control *mc =
-		(struct soc_mreg_control *)kcontrol->private_value;
-	unsigned int regbase = mc->regbase;
-	unsigned int regcount = mc->regcount;
-	unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
-	unsigned int regwmask = (1<<regwshift)-1;
-	unsigned int invert = mc->invert;
-	unsigned long mask = (1UL<<mc->nbits)-1;
-	long min = mc->min;
-	long max = mc->max;
-	long val = 0;
-	unsigned int regval;
-	unsigned int i;
-	int ret;
-
-	for (i = 0; i < regcount; i++) {
-		ret = snd_soc_component_read(component, regbase+i, &regval);
-		if (ret)
-			return ret;
-		val |= (regval & regwmask) << (regwshift*(regcount-i-1));
-	}
-	val &= mask;
-	if (min < 0 && val > max)
-		val |= ~mask;
-	if (invert)
-		val = max - val;
-	ucontrol->value.integer.value[0] = val;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
-
-/**
- * snd_soc_put_xr_sx - signed multi register get callback
- * @kcontrol: mreg control
- * @ucontrol: control element information
- *
- * Callback to set the value of a control that can span
- * multiple codec registers which together forms a single
- * signed value in a MSB/LSB manner. The control supports
- * specifying total no of bits used to allow for bitfields
- * across the multiple codec registers.
- *
- * Returns 0 for success.
- */
-int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
-	struct soc_mreg_control *mc =
-		(struct soc_mreg_control *)kcontrol->private_value;
-	unsigned int regbase = mc->regbase;
-	unsigned int regcount = mc->regcount;
-	unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
-	unsigned int regwmask = (1<<regwshift)-1;
-	unsigned int invert = mc->invert;
-	unsigned long mask = (1UL<<mc->nbits)-1;
-	long max = mc->max;
-	long val = ucontrol->value.integer.value[0];
-	unsigned int i, regval, regmask;
-	int err;
-
-	if (invert)
-		val = max - val;
-	val &= mask;
-	for (i = 0; i < regcount; i++) {
-		regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
-		regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
-		err = snd_soc_component_update_bits(component, regbase+i,
-				regmask, regval);
-		if (err < 0)
-			return err;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
-
-/**
- * snd_soc_get_strobe - strobe get callback
- * @kcontrol: mixer control
- * @ucontrol: control element information
- *
- * Callback get the value of a strobe mixer control.
- *
- * Returns 0 for success.
- */
-int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
-	struct soc_mixer_control *mc =
-		(struct soc_mixer_control *)kcontrol->private_value;
-	unsigned int reg = mc->reg;
-	unsigned int shift = mc->shift;
-	unsigned int mask = 1 << shift;
-	unsigned int invert = mc->invert != 0;
-	unsigned int val;
-	int ret;
-
-	ret = snd_soc_component_read(component, reg, &val);
-	if (ret)
-		return ret;
-
-	val &= mask;
-
-	if (shift != 0 && val != 0)
-		val = val >> shift;
-	ucontrol->value.enumerated.item[0] = val ^ invert;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
-
-/**
- * snd_soc_put_strobe - strobe put callback
- * @kcontrol: mixer control
- * @ucontrol: control element information
- *
- * Callback strobe a register bit to high then low (or the inverse)
- * in one pass of a single mixer enum control.
- *
- * Returns 1 for success.
- */
-int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
-	struct soc_mixer_control *mc =
-		(struct soc_mixer_control *)kcontrol->private_value;
-	unsigned int reg = mc->reg;
-	unsigned int shift = mc->shift;
-	unsigned int mask = 1 << shift;
-	unsigned int invert = mc->invert != 0;
-	unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
-	unsigned int val1 = (strobe ^ invert) ? mask : 0;
-	unsigned int val2 = (strobe ^ invert) ? 0 : mask;
-	int err;
-
-	err = snd_soc_component_update_bits(component, reg, mask, val1);
-	if (err < 0)
-		return err;
-
-	return snd_soc_component_update_bits(component, reg, mask, val2);
-}
-EXPORT_SYMBOL_GPL(snd_soc_put_strobe);
-
 /**
  * snd_soc_dai_set_sysclk - configure DAI system or master clock.
  * @dai: DAI

sound/soc/soc-dapm.c

@@ -159,27 +159,135 @@ static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
 	}
 }
 
-void dapm_mark_io_dirty(struct snd_soc_dapm_context *dapm)
+/*
+ * dapm_widget_invalidate_input_paths() - Invalidate the cached number of input
+ *  paths
+ * @w: The widget for which to invalidate the cached number of input paths
+ *
+ * The function resets the cached number of inputs for the specified widget and
+ * all widgets that can be reached via outgoing paths from the widget.
+ *
+ * This function must be called if the number of input paths for a widget might
+ * have changed. E.g. if the source state of a widget changes or a path is added
+ * or activated with the widget as the sink.
+ */
+static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget *w)
+{
+	struct snd_soc_dapm_widget *sink;
+	struct snd_soc_dapm_path *p;
+	LIST_HEAD(list);
+
+	dapm_assert_locked(w->dapm);
+
+	if (w->inputs == -1)
+		return;
+
+	w->inputs = -1;
+	list_add_tail(&w->work_list, &list);
+
+	list_for_each_entry(w, &list, work_list) {
+		list_for_each_entry(p, &w->sinks, list_source) {
+			if (p->is_supply || p->weak || !p->connect)
+				continue;
+			sink = p->sink;
+			if (sink->inputs != -1) {
+				sink->inputs = -1;
+				list_add_tail(&sink->work_list, &list);
+			}
+		}
+	}
+}
+
+/*
+ * dapm_widget_invalidate_output_paths() - Invalidate the cached number of
+ *  output paths
+ * @w: The widget for which to invalidate the cached number of output paths
+ *
+ * Resets the cached number of outputs for the specified widget and all widgets
+ * that can be reached via incoming paths from the widget.
+ *
+ * This function must be called if the number of output paths for a widget might
+ * have changed. E.g. if the sink state of a widget changes or a path is added
+ * or activated with the widget as the source.
+ */
+static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget *w)
+{
+	struct snd_soc_dapm_widget *source;
+	struct snd_soc_dapm_path *p;
+	LIST_HEAD(list);
+
+	dapm_assert_locked(w->dapm);
+
+	if (w->outputs == -1)
+		return;
+
+	w->outputs = -1;
+	list_add_tail(&w->work_list, &list);
+
+	list_for_each_entry(w, &list, work_list) {
+		list_for_each_entry(p, &w->sources, list_sink) {
+			if (p->is_supply || p->weak || !p->connect)
+				continue;
+			source = p->source;
+			if (source->outputs != -1) {
+				source->outputs = -1;
+				list_add_tail(&source->work_list, &list);
+			}
+		}
+	}
+}
+
+/*
+ * dapm_path_invalidate() - Invalidates the cached number of inputs and outputs
+ *  for the widgets connected to a path
+ * @p: The path to invalidate
+ *
+ * Resets the cached number of inputs for the sink of the path and the cached
+ * number of outputs for the source of the path.
+ *
+ * This function must be called when a path is added, removed or the connected
+ * state changes.
+ */
+static void dapm_path_invalidate(struct snd_soc_dapm_path *p)
+{
+	/*
+	 * Weak paths or supply paths do not influence the number of input or
+	 * output paths of their neighbors.
+	 */
+	if (p->weak || p->is_supply)
+		return;
+
+	/*
+	 * The number of connected endpoints is the sum of the number of
+	 * connected endpoints of all neighbors. If a node with 0 connected
+	 * endpoints is either connected or disconnected that sum won't change,
+	 * so there is no need to re-check the path.
+	 */
+	if (p->source->inputs != 0)
+		dapm_widget_invalidate_input_paths(p->sink);
+	if (p->sink->outputs != 0)
+		dapm_widget_invalidate_output_paths(p->source);
+}
+
+void dapm_mark_endpoints_dirty(struct snd_soc_card *card)
 {
-	struct snd_soc_card *card = dapm->card;
 	struct snd_soc_dapm_widget *w;
 
 	mutex_lock(&card->dapm_mutex);
 
 	list_for_each_entry(w, &card->widgets, list) {
-		switch (w->id) {
-		case snd_soc_dapm_input:
-		case snd_soc_dapm_output:
-			dapm_mark_dirty(w, "Rechecking inputs and outputs");
-			break;
-		default:
-			break;
+		if (w->is_sink || w->is_source) {
+			dapm_mark_dirty(w, "Rechecking endpoints");
+			if (w->is_sink)
+				dapm_widget_invalidate_output_paths(w);
+			if (w->is_source)
+				dapm_widget_invalidate_input_paths(w);
 		}
 	}
 
 	mutex_unlock(&card->dapm_mutex);
 }
-EXPORT_SYMBOL_GPL(dapm_mark_io_dirty);
+EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty);
 
 /* create a new dapm widget */
 static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
@@ -386,8 +494,6 @@ static void dapm_reset(struct snd_soc_card *card)
 	list_for_each_entry(w, &card->widgets, list) {
 		w->new_power = w->power;
 		w->power_checked = false;
-		w->inputs = -1;
-		w->outputs = -1;
 	}
 }
 
@@ -469,10 +575,9 @@ static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
 
 /* connect mux widget to its interconnecting audio paths */
 static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
-	struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
-	struct snd_soc_dapm_path *path, const char *control_name,
-	const struct snd_kcontrol_new *kcontrol)
+	struct snd_soc_dapm_path *path, const char *control_name)
 {
+	const struct snd_kcontrol_new *kcontrol = &path->sink->kcontrol_news[0];
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
 	unsigned int val, item;
 	int i;
@@ -493,10 +598,7 @@ static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
 
 	for (i = 0; i < e->items; i++) {
 		if (!(strcmp(control_name, e->texts[i]))) {
-			list_add(&path->list, &dapm->card->paths);
-			list_add(&path->list_sink, &dest->sources);
-			list_add(&path->list_source, &src->sinks);
-			path->name = (char*)e->texts[i];
+			path->name = e->texts[i];
 			if (i == item)
 				path->connect = 1;
 			else
@@ -509,11 +611,10 @@ static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
 }
 
 /* set up initial codec paths */
-static void dapm_set_mixer_path_status(struct snd_soc_dapm_widget *w,
-	struct snd_soc_dapm_path *p, int i)
+static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i)
 {
 	struct soc_mixer_control *mc = (struct soc_mixer_control *)
-		w->kcontrol_news[i].private_value;
+		p->sink->kcontrol_news[i].private_value;
 	unsigned int reg = mc->reg;
 	unsigned int shift = mc->shift;
 	unsigned int max = mc->max;
@@ -522,7 +623,7 @@ static void dapm_set_mixer_path_status(struct snd_soc_dapm_widget *w,
 	unsigned int val;
 
 	if (reg != SND_SOC_NOPM) {
-		soc_dapm_read(w->dapm, reg, &val);
+		soc_dapm_read(p->sink->dapm, reg, &val);
 		val = (val >> shift) & mask;
 		if (invert)
 			val = max - val;
@@ -534,19 +635,15 @@ static void dapm_set_mixer_path_status(struct snd_soc_dapm_widget *w,
 
 /* connect mixer widget to its interconnecting audio paths */
 static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
-	struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
 	struct snd_soc_dapm_path *path, const char *control_name)
 {
 	int i;
 
 	/* search for mixer kcontrol */
-	for (i = 0; i < dest->num_kcontrols; i++) {
-		if (!strcmp(control_name, dest->kcontrol_news[i].name)) {
-			list_add(&path->list, &dapm->card->paths);
-			list_add(&path->list_sink, &dest->sources);
-			list_add(&path->list_source, &src->sinks);
-			path->name = dest->kcontrol_news[i].name;
-			dapm_set_mixer_path_status(dest, path, i);
+	for (i = 0; i < path->sink->num_kcontrols; i++) {
+		if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) {
+			path->name = path->sink->kcontrol_news[i].name;
+			dapm_set_mixer_path_status(path, i);
 			return 0;
 		}
 	}
@@ -738,8 +835,10 @@ static int dapm_new_mux(struct snd_soc_dapm_widget *w)
 	if (ret < 0)
 		return ret;
 
-	list_for_each_entry(path, &w->sources, list_sink)
-		dapm_kcontrol_add_path(w->kcontrols[0], path);
+	list_for_each_entry(path, &w->sources, list_sink) {
+		if (path->name)
+			dapm_kcontrol_add_path(w->kcontrols[0], path);
+	}
 
 	return 0;
 }
@@ -754,34 +853,6 @@ static int dapm_new_pga(struct snd_soc_dapm_widget *w)
 	return 0;
 }
 
-/* reset 'walked' bit for each dapm path */
-static void dapm_clear_walk_output(struct snd_soc_dapm_context *dapm,
-				   struct list_head *sink)
-{
-	struct snd_soc_dapm_path *p;
-
-	list_for_each_entry(p, sink, list_source) {
-		if (p->walked) {
-			p->walked = 0;
-			dapm_clear_walk_output(dapm, &p->sink->sinks);
-		}
-	}
-}
-
-static void dapm_clear_walk_input(struct snd_soc_dapm_context *dapm,
-				  struct list_head *source)
-{
-	struct snd_soc_dapm_path *p;
-
-	list_for_each_entry(p, source, list_sink) {
-		if (p->walked) {
-			p->walked = 0;
-			dapm_clear_walk_input(dapm, &p->source->sources);
-		}
-	}
-}
-
-
 /* We implement power down on suspend by checking the power state of
  * the ALSA card - when we are suspending the ALSA state for the card
  * is set to D3.
@@ -856,61 +927,23 @@ static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
 
 	DAPM_UPDATE_STAT(widget, path_checks);
 
-	switch (widget->id) {
-	case snd_soc_dapm_supply:
-	case snd_soc_dapm_regulator_supply:
-	case snd_soc_dapm_clock_supply:
-	case snd_soc_dapm_kcontrol:
-		return 0;
-	default:
-		break;
-	}
-
-	switch (widget->id) {
-	case snd_soc_dapm_adc:
-	case snd_soc_dapm_aif_out:
-	case snd_soc_dapm_dai_out:
-		if (widget->active) {
-			widget->outputs = snd_soc_dapm_suspend_check(widget);
-			return widget->outputs;
-		}
-	default:
-		break;
-	}
-
-	if (widget->connected) {
-		/* connected pin ? */
-		if (widget->id == snd_soc_dapm_output && !widget->ext) {
-			widget->outputs = snd_soc_dapm_suspend_check(widget);
-			return widget->outputs;
-		}
-
-		/* connected jack or spk ? */
-		if (widget->id == snd_soc_dapm_hp ||
-		    widget->id == snd_soc_dapm_spk ||
-		    (widget->id == snd_soc_dapm_line &&
-		     !list_empty(&widget->sources))) {
-			widget->outputs = snd_soc_dapm_suspend_check(widget);
-			return widget->outputs;
-		}
+	if (widget->is_sink && widget->connected) {
+		widget->outputs = snd_soc_dapm_suspend_check(widget);
+		return widget->outputs;
 	}
 
 	list_for_each_entry(path, &widget->sinks, list_source) {
 		DAPM_UPDATE_STAT(widget, neighbour_checks);
 
-		if (path->weak)
+		if (path->weak || path->is_supply)
 			continue;
 
 		if (path->walking)
 			return 1;
 
-		if (path->walked)
-			continue;
-
 		trace_snd_soc_dapm_output_path(widget, path);
 
-		if (path->sink && path->connect) {
-			path->walked = 1;
+		if (path->connect) {
 			path->walking = 1;
 
 			/* do we need to add this widget to the list ? */
@@ -952,73 +985,23 @@ static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
 
 	DAPM_UPDATE_STAT(widget, path_checks);
 
-	switch (widget->id) {
-	case snd_soc_dapm_supply:
-	case snd_soc_dapm_regulator_supply:
-	case snd_soc_dapm_clock_supply:
-	case snd_soc_dapm_kcontrol:
-		return 0;
-	default:
-		break;
-	}
-
-	/* active stream ? */
-	switch (widget->id) {
-	case snd_soc_dapm_dac:
-	case snd_soc_dapm_aif_in:
-	case snd_soc_dapm_dai_in:
-		if (widget->active) {
-			widget->inputs = snd_soc_dapm_suspend_check(widget);
-			return widget->inputs;
-		}
-	default:
-		break;
-	}
-
-	if (widget->connected) {
-		/* connected pin ? */
-		if (widget->id == snd_soc_dapm_input && !widget->ext) {
-			widget->inputs = snd_soc_dapm_suspend_check(widget);
-			return widget->inputs;
-		}
-
-		/* connected VMID/Bias for lower pops */
-		if (widget->id == snd_soc_dapm_vmid) {
-			widget->inputs = snd_soc_dapm_suspend_check(widget);
-			return widget->inputs;
-		}
-
-		/* connected jack ? */
-		if (widget->id == snd_soc_dapm_mic ||
-		    (widget->id == snd_soc_dapm_line &&
-		     !list_empty(&widget->sinks))) {
-			widget->inputs = snd_soc_dapm_suspend_check(widget);
-			return widget->inputs;
-		}
-
-		/* signal generator */
-		if (widget->id == snd_soc_dapm_siggen) {
-			widget->inputs = snd_soc_dapm_suspend_check(widget);
-			return widget->inputs;
-		}
+	if (widget->is_source && widget->connected) {
+		widget->inputs = snd_soc_dapm_suspend_check(widget);
+		return widget->inputs;
 	}
 
 	list_for_each_entry(path, &widget->sources, list_sink) {
 		DAPM_UPDATE_STAT(widget, neighbour_checks);
 
-		if (path->weak)
+		if (path->weak || path->is_supply)
 			continue;
 
 		if (path->walking)
 			return 1;
 
-		if (path->walked)
-			continue;
-
 		trace_snd_soc_dapm_input_path(widget, path);
 
-		if (path->source && path->connect) {
-			path->walked = 1;
+		if (path->connect) {
 			path->walking = 1;
 
 			/* do we need to add this widget to the list ? */
@@ -1060,21 +1043,25 @@ static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
 	struct snd_soc_dapm_widget_list **list)
 {
-	struct snd_soc_card *card = dai->card;
+	struct snd_soc_card *card = dai->component->card;
+	struct snd_soc_dapm_widget *w;
 	int paths;
 
 	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
-	dapm_reset(card);
 
-	if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
+	/*
+	 * For is_connected_{output,input}_ep fully discover the graph we need
+	 * to reset the cached number of inputs and outputs.
+	 */
+	list_for_each_entry(w, &card->widgets, list) {
+		w->inputs = -1;
+		w->outputs = -1;
+	}
+
+	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
 		paths = is_connected_output_ep(dai->playback_widget, list);
-		dapm_clear_walk_output(&card->dapm,
-				       &dai->playback_widget->sinks);
-	} else {
+	else
 		paths = is_connected_input_ep(dai->capture_widget, list);
-		dapm_clear_walk_input(&card->dapm,
-				      &dai->capture_widget->sources);
-	}
 
 	trace_snd_soc_dapm_connected(paths, stream);
 	mutex_unlock(&card->dapm_mutex);
@@ -1163,44 +1150,10 @@ static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
 	DAPM_UPDATE_STAT(w, power_checks);
 
 	in = is_connected_input_ep(w, NULL);
-	dapm_clear_walk_input(w->dapm, &w->sources);
 	out = is_connected_output_ep(w, NULL);
-	dapm_clear_walk_output(w->dapm, &w->sinks);
 	return out != 0 && in != 0;
 }
 
-/* Check to see if an ADC has power */
-static int dapm_adc_check_power(struct snd_soc_dapm_widget *w)
-{
-	int in;
-
-	DAPM_UPDATE_STAT(w, power_checks);
-
-	if (w->active) {
-		in = is_connected_input_ep(w, NULL);
-		dapm_clear_walk_input(w->dapm, &w->sources);
-		return in != 0;
-	} else {
-		return dapm_generic_check_power(w);
-	}
-}
-
-/* Check to see if a DAC has power */
-static int dapm_dac_check_power(struct snd_soc_dapm_widget *w)
-{
-	int out;
-
-	DAPM_UPDATE_STAT(w, power_checks);
-
-	if (w->active) {
-		out = is_connected_output_ep(w, NULL);
-		dapm_clear_walk_output(w->dapm, &w->sinks);
-		return out != 0;
-	} else {
-		return dapm_generic_check_power(w);
-	}
-}
-
 /* Check to see if a power supply is needed */
 static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
 {
@@ -1219,9 +1172,6 @@ static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
 		    !path->connected(path->source, path->sink))
 			continue;
 
-		if (!path->sink)
-			continue;
-
 		if (dapm_widget_power_check(path->sink))
 			return 1;
 	}
@@ -1636,27 +1586,14 @@ static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
 	/* If we changed our power state perhaps our neigbours changed
 	 * also.
 	 */
-	list_for_each_entry(path, &w->sources, list_sink) {
-		if (path->source) {
-			dapm_widget_set_peer_power(path->source, power,
+	list_for_each_entry(path, &w->sources, list_sink)
+		dapm_widget_set_peer_power(path->source, power, path->connect);
+
+	/* Supplies can't affect their outputs, only their inputs */
+	if (!w->is_supply) {
+		list_for_each_entry(path, &w->sinks, list_source)
+			dapm_widget_set_peer_power(path->sink, power,
 						   path->connect);
-		}
-	}
-	switch (w->id) {
-	case snd_soc_dapm_supply:
-	case snd_soc_dapm_regulator_supply:
-	case snd_soc_dapm_clock_supply:
-	case snd_soc_dapm_kcontrol:
-		/* Supplies can't affect their outputs, only their inputs */
-		break;
-	default:
-		list_for_each_entry(path, &w->sinks, list_source) {
-			if (path->sink) {
-				dapm_widget_set_peer_power(path->sink, power,
-							   path->connect);
-			}
-		}
-		break;
 	}
 
 	if (power)
@@ -1863,10 +1800,14 @@ static ssize_t dapm_widget_power_read_file(struct file *file,
 	if (!buf)
 		return -ENOMEM;
 
-	in = is_connected_input_ep(w, NULL);
-	dapm_clear_walk_input(w->dapm, &w->sources);
-	out = is_connected_output_ep(w, NULL);
-	dapm_clear_walk_output(w->dapm, &w->sinks);
+	/* Supply widgets are not handled by is_connected_{input,output}_ep() */
+	if (w->is_supply) {
+		in = 0;
+		out = 0;
+	} else {
+		in = is_connected_input_ep(w, NULL);
+		out = is_connected_output_ep(w, NULL);
+	}
 
 	ret = snprintf(buf, PAGE_SIZE, "%s: %s%s  in %d out %d",
 		       w->name, w->power ? "On" : "Off",
@@ -2011,32 +1952,45 @@ static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
 
 #endif
 
+/*
+ * soc_dapm_connect_path() - Connects or disconnects a path
+ * @path: The path to update
+ * @connect: The new connect state of the path. True if the path is connected,
+ *  false if it is disconneted.
+ * @reason: The reason why the path changed (for debugging only)
+ */
+static void soc_dapm_connect_path(struct snd_soc_dapm_path *path,
+	bool connect, const char *reason)
+{
+	if (path->connect == connect)
+		return;
+
+	path->connect = connect;
+	dapm_mark_dirty(path->source, reason);
+	dapm_mark_dirty(path->sink, reason);
+	dapm_path_invalidate(path);
+}
+
 /* test and update the power status of a mux widget */
 static int soc_dapm_mux_update_power(struct snd_soc_card *card,
 				 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
 {
 	struct snd_soc_dapm_path *path;
 	int found = 0;
+	bool connect;
 
 	lockdep_assert_held(&card->dapm_mutex);
 
 	/* find dapm widget path assoc with kcontrol */
 	dapm_kcontrol_for_each_path(path, kcontrol) {
-		if (!path->name || !e->texts[mux])
-			continue;
-
 		found = 1;
 		/* we now need to match the string in the enum to the path */
-		if (!(strcmp(path->name, e->texts[mux]))) {
-			path->connect = 1; /* new connection */
-			dapm_mark_dirty(path->source, "mux connection");
-		} else {
-			if (path->connect)
-				dapm_mark_dirty(path->source,
-						"mux disconnection");
-			path->connect = 0; /* old connection must be powered down */
-		}
-		dapm_mark_dirty(path->sink, "mux change");
+		if (!(strcmp(path->name, e->texts[mux])))
+			connect = true;
+		else
+			connect = false;
+
+		soc_dapm_connect_path(path, connect, "mux update");
 	}
 
 	if (found)
@@ -2075,9 +2029,7 @@ static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
 	/* find dapm widget path assoc with kcontrol */
 	dapm_kcontrol_for_each_path(path, kcontrol) {
 		found = 1;
-		path->connect = connect;
-		dapm_mark_dirty(path->source, "mixer connection");
-		dapm_mark_dirty(path->sink, "mixer update");
+		soc_dapm_connect_path(path, connect, "mixer update");
 	}
 
 	if (found)
@@ -2255,8 +2207,11 @@ static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
 		return -EINVAL;
 	}
 
-	if (w->connected != status)
+	if (w->connected != status) {
 		dapm_mark_dirty(w, "pin configuration");
+		dapm_widget_invalidate_input_paths(w);
+		dapm_widget_invalidate_output_paths(w);
+	}
 
 	w->connected = status;
 	if (status == 0)
@@ -2309,6 +2264,53 @@ int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
 
+/*
+ * dapm_update_widget_flags() - Re-compute widget sink and source flags
+ * @w: The widget for which to update the flags
+ *
+ * Some widgets have a dynamic category which depends on which neighbors they
+ * are connected to. This function update the category for these widgets.
+ *
+ * This function must be called whenever a path is added or removed to a widget.
+ */
+static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w)
+{
+	struct snd_soc_dapm_path *p;
+
+	switch (w->id) {
+	case snd_soc_dapm_input:
+		w->is_source = 1;
+		list_for_each_entry(p, &w->sources, list_sink) {
+			if (p->source->id == snd_soc_dapm_micbias ||
+				p->source->id == snd_soc_dapm_mic ||
+				p->source->id == snd_soc_dapm_line ||
+				p->source->id == snd_soc_dapm_output) {
+					w->is_source = 0;
+					break;
+			}
+		}
+		break;
+	case snd_soc_dapm_output:
+		w->is_sink = 1;
+		list_for_each_entry(p, &w->sinks, list_source) {
+			if (p->sink->id == snd_soc_dapm_spk ||
+				p->sink->id == snd_soc_dapm_hp ||
+				p->sink->id == snd_soc_dapm_line ||
+				p->sink->id == snd_soc_dapm_input) {
+					w->is_sink = 0;
+					break;
+			}
+		}
+		break;
+	case snd_soc_dapm_line:
+		w->is_sink = !list_empty(&w->sources);
+		w->is_source = !list_empty(&w->sinks);
+		break;
+	default:
+		break;
+	}
+}
+
 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
 	struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
 	const char *control,
@@ -2318,6 +2320,27 @@ static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
 	struct snd_soc_dapm_path *path;
 	int ret;
 
+	if (wsink->is_supply && !wsource->is_supply) {
+		dev_err(dapm->dev,
+			"Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
+			wsource->name, wsink->name);
+		return -EINVAL;
+	}
+
+	if (connected && !wsource->is_supply) {
+		dev_err(dapm->dev,
+			"connected() callback only supported for supply widgets (%s -> %s)\n",
+			wsource->name, wsink->name);
+		return -EINVAL;
+	}
+
+	if (wsource->is_supply && control) {
+		dev_err(dapm->dev,
+			"Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
+			wsource->name, control, wsink->name);
+		return -EINVAL;
+	}
+
 	path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
 	if (!path)
 		return -ENOMEM;
@@ -2330,85 +2353,49 @@ static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
 	INIT_LIST_HEAD(&path->list_source);
 	INIT_LIST_HEAD(&path->list_sink);
 
-	/* check for external widgets */
-	if (wsink->id == snd_soc_dapm_input) {
-		if (wsource->id == snd_soc_dapm_micbias ||
-			wsource->id == snd_soc_dapm_mic ||
-			wsource->id == snd_soc_dapm_line ||
-			wsource->id == snd_soc_dapm_output)
-			wsink->ext = 1;
-	}
-	if (wsource->id == snd_soc_dapm_output) {
-		if (wsink->id == snd_soc_dapm_spk ||
-			wsink->id == snd_soc_dapm_hp ||
-			wsink->id == snd_soc_dapm_line ||
-			wsink->id == snd_soc_dapm_input)
-			wsource->ext = 1;
-	}
-
-	dapm_mark_dirty(wsource, "Route added");
-	dapm_mark_dirty(wsink, "Route added");
+	if (wsource->is_supply || wsink->is_supply)
+		path->is_supply = 1;
 
 	/* connect static paths */
 	if (control == NULL) {
-		list_add(&path->list, &dapm->card->paths);
-		list_add(&path->list_sink, &wsink->sources);
-		list_add(&path->list_source, &wsource->sinks);
 		path->connect = 1;
-		return 0;
-	}
-
-	/* connect dynamic paths */
-	switch (wsink->id) {
-	case snd_soc_dapm_adc:
-	case snd_soc_dapm_dac:
-	case snd_soc_dapm_pga:
-	case snd_soc_dapm_out_drv:
-	case snd_soc_dapm_input:
-	case snd_soc_dapm_output:
-	case snd_soc_dapm_siggen:
-	case snd_soc_dapm_micbias:
-	case snd_soc_dapm_vmid:
-	case snd_soc_dapm_pre:
-	case snd_soc_dapm_post:
-	case snd_soc_dapm_supply:
-	case snd_soc_dapm_regulator_supply:
-	case snd_soc_dapm_clock_supply:
-	case snd_soc_dapm_aif_in:
-	case snd_soc_dapm_aif_out:
-	case snd_soc_dapm_dai_in:
-	case snd_soc_dapm_dai_out:
-	case snd_soc_dapm_dai_link:
-	case snd_soc_dapm_kcontrol:
-		list_add(&path->list, &dapm->card->paths);
-		list_add(&path->list_sink, &wsink->sources);
-		list_add(&path->list_source, &wsource->sinks);
-		path->connect = 1;
-		return 0;
-	case snd_soc_dapm_mux:
-		ret = dapm_connect_mux(dapm, wsource, wsink, path, control,
-			&wsink->kcontrol_news[0]);
-		if (ret != 0)
-			goto err;
-		break;
-	case snd_soc_dapm_switch:
-	case snd_soc_dapm_mixer:
-	case snd_soc_dapm_mixer_named_ctl:
-		ret = dapm_connect_mixer(dapm, wsource, wsink, path, control);
-		if (ret != 0)
+	} else {
+		/* connect dynamic paths */
+		switch (wsink->id) {
+		case snd_soc_dapm_mux:
+			ret = dapm_connect_mux(dapm, path, control);
+			if (ret != 0)
+				goto err;
+			break;
+		case snd_soc_dapm_switch:
+		case snd_soc_dapm_mixer:
+		case snd_soc_dapm_mixer_named_ctl:
+			ret = dapm_connect_mixer(dapm, path, control);
+			if (ret != 0)
+				goto err;
+			break;
+		default:
+			dev_err(dapm->dev,
+				"Control not supported for path %s -> [%s] -> %s\n",
+				wsource->name, control, wsink->name);
+			ret = -EINVAL;
 			goto err;
-		break;
-	case snd_soc_dapm_hp:
-	case snd_soc_dapm_mic:
-	case snd_soc_dapm_line:
-	case snd_soc_dapm_spk:
-		list_add(&path->list, &dapm->card->paths);
-		list_add(&path->list_sink, &wsink->sources);
-		list_add(&path->list_source, &wsource->sinks);
-		path->connect = 0;
-		return 0;
+		}
 	}
 
+	list_add(&path->list, &dapm->card->paths);
+	list_add(&path->list_sink, &wsink->sources);
+	list_add(&path->list_source, &wsource->sinks);
+
+	dapm_update_widget_flags(wsource);
+	dapm_update_widget_flags(wsink);
+
+	dapm_mark_dirty(wsource, "Route added");
+	dapm_mark_dirty(wsink, "Route added");
+
+	if (dapm->card->instantiated && path->connect)
+		dapm_path_invalidate(path);
+
 	return 0;
 err:
 	kfree(path);
@@ -2489,6 +2476,7 @@ static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
 				  const struct snd_soc_dapm_route *route)
 {
+	struct snd_soc_dapm_widget *wsource, *wsink;
 	struct snd_soc_dapm_path *path, *p;
 	const char *sink;
 	const char *source;
@@ -2526,10 +2514,19 @@ static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
 	}
 
 	if (path) {
-		dapm_mark_dirty(path->source, "Route removed");
-		dapm_mark_dirty(path->sink, "Route removed");
+		wsource = path->source;
+		wsink = path->sink;
+
+		dapm_mark_dirty(wsource, "Route removed");
+		dapm_mark_dirty(wsink, "Route removed");
+		if (path->connect)
+			dapm_path_invalidate(path);
 
 		dapm_free_path(path);
+
+		/* Update any path related flags */
+		dapm_update_widget_flags(wsource);
+		dapm_update_widget_flags(wsink);
 	} else {
 		dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
 			 source, sink);
@@ -3087,40 +3084,44 @@ snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
 	}
 
 	switch (w->id) {
-	case snd_soc_dapm_switch:
-	case snd_soc_dapm_mixer:
-	case snd_soc_dapm_mixer_named_ctl:
+	case snd_soc_dapm_mic:
+	case snd_soc_dapm_input:
+		w->is_source = 1;
 		w->power_check = dapm_generic_check_power;
 		break;
-	case snd_soc_dapm_mux:
+	case snd_soc_dapm_spk:
+	case snd_soc_dapm_hp:
+	case snd_soc_dapm_output:
+		w->is_sink = 1;
 		w->power_check = dapm_generic_check_power;
 		break;
-	case snd_soc_dapm_dai_out:
-		w->power_check = dapm_adc_check_power;
-		break;
-	case snd_soc_dapm_dai_in:
-		w->power_check = dapm_dac_check_power;
+	case snd_soc_dapm_vmid:
+	case snd_soc_dapm_siggen:
+		w->is_source = 1;
+		w->power_check = dapm_always_on_check_power;
 		break;
+	case snd_soc_dapm_mux:
+	case snd_soc_dapm_switch:
+	case snd_soc_dapm_mixer:
+	case snd_soc_dapm_mixer_named_ctl:
 	case snd_soc_dapm_adc:
 	case snd_soc_dapm_aif_out:
 	case snd_soc_dapm_dac:
 	case snd_soc_dapm_aif_in:
 	case snd_soc_dapm_pga:
 	case snd_soc_dapm_out_drv:
-	case snd_soc_dapm_input:
-	case snd_soc_dapm_output:
 	case snd_soc_dapm_micbias:
-	case snd_soc_dapm_spk:
-	case snd_soc_dapm_hp:
-	case snd_soc_dapm_mic:
 	case snd_soc_dapm_line:
 	case snd_soc_dapm_dai_link:
+	case snd_soc_dapm_dai_out:
+	case snd_soc_dapm_dai_in:
 		w->power_check = dapm_generic_check_power;
 		break;
 	case snd_soc_dapm_supply:
 	case snd_soc_dapm_regulator_supply:
 	case snd_soc_dapm_clock_supply:
 	case snd_soc_dapm_kcontrol:
+		w->is_supply = 1;
 		w->power_check = dapm_supply_check_power;
 		break;
 	default:
@@ -3137,6 +3138,9 @@ snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
 	INIT_LIST_HEAD(&w->dirty);
 	list_add(&w->list, &dapm->card->widgets);
 
+	w->inputs = -1;
+	w->outputs = -1;
+
 	/* machine layer set ups unconnected pins and insertions */
 	w->connected = 1;
 	return w;
@@ -3484,6 +3488,14 @@ static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
 		case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
 			break;
 		}
+
+		if (w->id == snd_soc_dapm_dai_in) {
+			w->is_source = w->active;
+			dapm_widget_invalidate_input_paths(w);
+		} else {
+			w->is_sink = w->active;
+			dapm_widget_invalidate_output_paths(w);
+		}
 	}
 }
 
@@ -3610,7 +3622,15 @@ int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
 	}
 
 	dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
-	w->connected = 1;
+	if (!w->connected) {
+		/*
+		 * w->force does not affect the number of input or output paths,
+		 * so we only have to recheck if w->connected is changed
+		 */
+		dapm_widget_invalidate_input_paths(w);
+		dapm_widget_invalidate_output_paths(w);
+		w->connected = 1;
+	}
 	w->force = 1;
 	dapm_mark_dirty(w, "force enable");
 
@@ -3788,35 +3808,54 @@ int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
 
+/**
+ * dapm_is_external_path() - Checks if a path is a external path
+ * @card: The card the path belongs to
+ * @path: The path to check
+ *
+ * Returns true if the path is either between two different DAPM contexts or
+ * between two external pins of the same DAPM context. Otherwise returns
+ * false.
+ */
+static bool dapm_is_external_path(struct snd_soc_card *card,
+	struct snd_soc_dapm_path *path)
+{
+	dev_dbg(card->dev,
+		"... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
+		path->source->name, path->source->id, path->source->dapm,
+		path->sink->name, path->sink->id, path->sink->dapm);
+
+	/* Connection between two different DAPM contexts */
+	if (path->source->dapm != path->sink->dapm)
+		return true;
+
+	/* Loopback connection from external pin to external pin */
+	if (path->sink->id == snd_soc_dapm_input) {
+		switch (path->source->id) {
+		case snd_soc_dapm_output:
+		case snd_soc_dapm_micbias:
+			return true;
+		default:
+			break;
+		}
+	}
+
+	return false;
+}
+
 static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card,
 					      struct snd_soc_dapm_widget *w)
 {
 	struct snd_soc_dapm_path *p;
 
-	list_for_each_entry(p, &card->paths, list) {
-		if ((p->source == w) || (p->sink == w)) {
-			dev_dbg(card->dev,
-			    "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
-			    p->source->name, p->source->id, p->source->dapm,
-			    p->sink->name, p->sink->id, p->sink->dapm);
+	list_for_each_entry(p, &w->sources, list_sink) {
+		if (dapm_is_external_path(card, p))
+			return true;
+	}
 
-			/* Connected to something other than the codec */
-			if (p->source->dapm != p->sink->dapm)
-				return true;
-			/*
-			 * Loopback connection from codec external pin to
-			 * codec external pin
-			 */
-			if (p->sink->id == snd_soc_dapm_input) {
-				switch (p->source->id) {
-				case snd_soc_dapm_output:
-				case snd_soc_dapm_micbias:
-					return true;
-				default:
-					break;
-				}
-			}
-		}
+	list_for_each_entry(p, &w->sinks, list_source) {
+		if (dapm_is_external_path(card, p))
+			return true;
 	}
 
 	return false;

sound/soc/soc-ops.c

+/*
+ * soc-ops.c  --  Generic ASoC operations
+ *
+ * Copyright 2005 Wolfson Microelectronics PLC.
+ * Copyright 2005 Openedhand Ltd.
+ * Copyright (C) 2010 Slimlogic Ltd.
+ * Copyright (C) 2010 Texas Instruments Inc.
+ *
+ * Author: Liam Girdwood <lrg@slimlogic.co.uk>
+ *         with code, comments and ideas from :-
+ *         Richard Purdie <richard@openedhand.com>
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/bitops.h>
+#include <linux/ctype.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/jack.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dpcm.h>
+#include <sound/initval.h>
+
+/**
+ * snd_soc_info_enum_double - enumerated double mixer info callback
+ * @kcontrol: mixer control
+ * @uinfo: control element information
+ *
+ * Callback to provide information about a double enumerated
+ * mixer control.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_info *uinfo)
+{
+	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+
+	return snd_ctl_enum_info(uinfo, e->shift_l == e->shift_r ? 1 : 2,
+				 e->items, e->texts);
+}
+EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
+
+/**
+ * snd_soc_get_enum_double - enumerated double mixer get callback
+ * @kcontrol: mixer control
+ * @ucontrol: control element information
+ *
+ * Callback to get the value of a double enumerated mixer.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+	unsigned int val, item;
+	unsigned int reg_val;
+	int ret;
+
+	ret = snd_soc_component_read(component, e->reg, &reg_val);
+	if (ret)
+		return ret;
+	val = (reg_val >> e->shift_l) & e->mask;
+	item = snd_soc_enum_val_to_item(e, val);
+	ucontrol->value.enumerated.item[0] = item;
+	if (e->shift_l != e->shift_r) {
+		val = (reg_val >> e->shift_l) & e->mask;
+		item = snd_soc_enum_val_to_item(e, val);
+		ucontrol->value.enumerated.item[1] = item;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
+
+/**
+ * snd_soc_put_enum_double - enumerated double mixer put callback
+ * @kcontrol: mixer control
+ * @ucontrol: control element information
+ *
+ * Callback to set the value of a double enumerated mixer.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+	unsigned int *item = ucontrol->value.enumerated.item;
+	unsigned int val;
+	unsigned int mask;
+
+	if (item[0] >= e->items)
+		return -EINVAL;
+	val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
+	mask = e->mask << e->shift_l;
+	if (e->shift_l != e->shift_r) {
+		if (item[1] >= e->items)
+			return -EINVAL;
+		val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
+		mask |= e->mask << e->shift_r;
+	}
+
+	return snd_soc_component_update_bits(component, e->reg, mask, val);
+}
+EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
+
+/**
+ * snd_soc_read_signed - Read a codec register and interprete as signed value
+ * @component: component
+ * @reg: Register to read
+ * @mask: Mask to use after shifting the register value
+ * @shift: Right shift of register value
+ * @sign_bit: Bit that describes if a number is negative or not.
+ * @signed_val: Pointer to where the read value should be stored
+ *
+ * This functions reads a codec register. The register value is shifted right
+ * by 'shift' bits and masked with the given 'mask'. Afterwards it translates
+ * the given registervalue into a signed integer if sign_bit is non-zero.
+ *
+ * Returns 0 on sucess, otherwise an error value
+ */
+static int snd_soc_read_signed(struct snd_soc_component *component,
+	unsigned int reg, unsigned int mask, unsigned int shift,
+	unsigned int sign_bit, int *signed_val)
+{
+	int ret;
+	unsigned int val;
+
+	ret = snd_soc_component_read(component, reg, &val);
+	if (ret < 0)
+		return ret;
+
+	val = (val >> shift) & mask;
+
+	if (!sign_bit) {
+		*signed_val = val;
+		return 0;
+	}
+
+	/* non-negative number */
+	if (!(val & BIT(sign_bit))) {
+		*signed_val = val;
+		return 0;
+	}
+
+	ret = val;
+
+	/*
+	 * The register most probably does not contain a full-sized int.
+	 * Instead we have an arbitrary number of bits in a signed
+	 * representation which has to be translated into a full-sized int.
+	 * This is done by filling up all bits above the sign-bit.
+	 */
+	ret |= ~((int)(BIT(sign_bit) - 1));
+
+	*signed_val = ret;
+
+	return 0;
+}
+
+/**
+ * snd_soc_info_volsw - single mixer info callback
+ * @kcontrol: mixer control
+ * @uinfo: control element information
+ *
+ * Callback to provide information about a single mixer control, or a double
+ * mixer control that spans 2 registers.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_info *uinfo)
+{
+	struct soc_mixer_control *mc =
+		(struct soc_mixer_control *)kcontrol->private_value;
+	int platform_max;
+
+	if (!mc->platform_max)
+		mc->platform_max = mc->max;
+	platform_max = mc->platform_max;
+
+	if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
+		uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+	else
+		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+
+	uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = platform_max - mc->min;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
+
+/**
+ * snd_soc_get_volsw - single mixer get callback
+ * @kcontrol: mixer control
+ * @ucontrol: control element information
+ *
+ * Callback to get the value of a single mixer control, or a double mixer
+ * control that spans 2 registers.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct soc_mixer_control *mc =
+		(struct soc_mixer_control *)kcontrol->private_value;
+	unsigned int reg = mc->reg;
+	unsigned int reg2 = mc->rreg;
+	unsigned int shift = mc->shift;
+	unsigned int rshift = mc->rshift;
+	int max = mc->max;
+	int min = mc->min;
+	int sign_bit = mc->sign_bit;
+	unsigned int mask = (1 << fls(max)) - 1;
+	unsigned int invert = mc->invert;
+	int val;
+	int ret;
+
+	if (sign_bit)
+		mask = BIT(sign_bit + 1) - 1;
+
+	ret = snd_soc_read_signed(component, reg, mask, shift, sign_bit, &val);
+	if (ret)
+		return ret;
+
+	ucontrol->value.integer.value[0] = val - min;
+	if (invert)
+		ucontrol->value.integer.value[0] =
+			max - ucontrol->value.integer.value[0];
+
+	if (snd_soc_volsw_is_stereo(mc)) {
+		if (reg == reg2)
+			ret = snd_soc_read_signed(component, reg, mask, rshift,
+				sign_bit, &val);
+		else
+			ret = snd_soc_read_signed(component, reg2, mask, shift,
+				sign_bit, &val);
+		if (ret)
+			return ret;
+
+		ucontrol->value.integer.value[1] = val - min;
+		if (invert)
+			ucontrol->value.integer.value[1] =
+				max - ucontrol->value.integer.value[1];
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
+
+/**
+ * snd_soc_put_volsw - single mixer put callback
+ * @kcontrol: mixer control
+ * @ucontrol: control element information
+ *
+ * Callback to set the value of a single mixer control, or a double mixer
+ * control that spans 2 registers.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct soc_mixer_control *mc =
+		(struct soc_mixer_control *)kcontrol->private_value;
+	unsigned int reg = mc->reg;
+	unsigned int reg2 = mc->rreg;
+	unsigned int shift = mc->shift;
+	unsigned int rshift = mc->rshift;
+	int max = mc->max;
+	int min = mc->min;
+	unsigned int sign_bit = mc->sign_bit;
+	unsigned int mask = (1 << fls(max)) - 1;
+	unsigned int invert = mc->invert;
+	int err;
+	bool type_2r = false;
+	unsigned int val2 = 0;
+	unsigned int val, val_mask;
+
+	if (sign_bit)
+		mask = BIT(sign_bit + 1) - 1;
+
+	val = ((ucontrol->value.integer.value[0] + min) & mask);
+	if (invert)
+		val = max - val;
+	val_mask = mask << shift;
+	val = val << shift;
+	if (snd_soc_volsw_is_stereo(mc)) {
+		val2 = ((ucontrol->value.integer.value[1] + min) & mask);
+		if (invert)
+			val2 = max - val2;
+		if (reg == reg2) {
+			val_mask |= mask << rshift;
+			val |= val2 << rshift;
+		} else {
+			val2 = val2 << shift;
+			type_2r = true;
+		}
+	}
+	err = snd_soc_component_update_bits(component, reg, val_mask, val);
+	if (err < 0)
+		return err;
+
+	if (type_2r)
+		err = snd_soc_component_update_bits(component, reg2, val_mask,
+			val2);
+
+	return err;
+}
+EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
+
+/**
+ * snd_soc_get_volsw_sx - single mixer get callback
+ * @kcontrol: mixer control
+ * @ucontrol: control element information
+ *
+ * Callback to get the value of a single mixer control, or a double mixer
+ * control that spans 2 registers.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
+		      struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct soc_mixer_control *mc =
+	    (struct soc_mixer_control *)kcontrol->private_value;
+	unsigned int reg = mc->reg;
+	unsigned int reg2 = mc->rreg;
+	unsigned int shift = mc->shift;
+	unsigned int rshift = mc->rshift;
+	int max = mc->max;
+	int min = mc->min;
+	int mask = (1 << (fls(min + max) - 1)) - 1;
+	unsigned int val;
+	int ret;
+
+	ret = snd_soc_component_read(component, reg, &val);
+	if (ret < 0)
+		return ret;
+
+	ucontrol->value.integer.value[0] = ((val >> shift) - min) & mask;
+
+	if (snd_soc_volsw_is_stereo(mc)) {
+		ret = snd_soc_component_read(component, reg2, &val);
+		if (ret < 0)
+			return ret;
+
+		val = ((val >> rshift) - min) & mask;
+		ucontrol->value.integer.value[1] = val;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
+
+/**
+ * snd_soc_put_volsw_sx - double mixer set callback
+ * @kcontrol: mixer control
+ * @uinfo: control element information
+ *
+ * Callback to set the value of a double mixer control that spans 2 registers.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
+			 struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct soc_mixer_control *mc =
+	    (struct soc_mixer_control *)kcontrol->private_value;
+
+	unsigned int reg = mc->reg;
+	unsigned int reg2 = mc->rreg;
+	unsigned int shift = mc->shift;
+	unsigned int rshift = mc->rshift;
+	int max = mc->max;
+	int min = mc->min;
+	int mask = (1 << (fls(min + max) - 1)) - 1;
+	int err = 0;
+	unsigned int val, val_mask, val2 = 0;
+
+	val_mask = mask << shift;
+	val = (ucontrol->value.integer.value[0] + min) & mask;
+	val = val << shift;
+
+	err = snd_soc_component_update_bits(component, reg, val_mask, val);
+	if (err < 0)
+		return err;
+
+	if (snd_soc_volsw_is_stereo(mc)) {
+		val_mask = mask << rshift;
+		val2 = (ucontrol->value.integer.value[1] + min) & mask;
+		val2 = val2 << rshift;
+
+		err = snd_soc_component_update_bits(component, reg2, val_mask,
+			val2);
+	}
+	return err;
+}
+EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
+
+/**
+ * snd_soc_info_volsw_range - single mixer info callback with range.
+ * @kcontrol: mixer control
+ * @uinfo: control element information
+ *
+ * Callback to provide information, within a range, about a single
+ * mixer control.
+ *
+ * returns 0 for success.
+ */
+int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_info *uinfo)
+{
+	struct soc_mixer_control *mc =
+		(struct soc_mixer_control *)kcontrol->private_value;
+	int platform_max;
+	int min = mc->min;
+
+	if (!mc->platform_max)
+		mc->platform_max = mc->max;
+	platform_max = mc->platform_max;
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = platform_max - min;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
+
+/**
+ * snd_soc_put_volsw_range - single mixer put value callback with range.
+ * @kcontrol: mixer control
+ * @ucontrol: control element information
+ *
+ * Callback to set the value, within a range, for a single mixer control.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct soc_mixer_control *mc =
+		(struct soc_mixer_control *)kcontrol->private_value;
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	unsigned int reg = mc->reg;
+	unsigned int rreg = mc->rreg;
+	unsigned int shift = mc->shift;
+	int min = mc->min;
+	int max = mc->max;
+	unsigned int mask = (1 << fls(max)) - 1;
+	unsigned int invert = mc->invert;
+	unsigned int val, val_mask;
+	int ret;
+
+	if (invert)
+		val = (max - ucontrol->value.integer.value[0]) & mask;
+	else
+		val = ((ucontrol->value.integer.value[0] + min) & mask);
+	val_mask = mask << shift;
+	val = val << shift;
+
+	ret = snd_soc_component_update_bits(component, reg, val_mask, val);
+	if (ret < 0)
+		return ret;
+
+	if (snd_soc_volsw_is_stereo(mc)) {
+		if (invert)
+			val = (max - ucontrol->value.integer.value[1]) & mask;
+		else
+			val = ((ucontrol->value.integer.value[1] + min) & mask);
+		val_mask = mask << shift;
+		val = val << shift;
+
+		ret = snd_soc_component_update_bits(component, rreg, val_mask,
+			val);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
+
+/**
+ * snd_soc_get_volsw_range - single mixer get callback with range
+ * @kcontrol: mixer control
+ * @ucontrol: control element information
+ *
+ * Callback to get the value, within a range, of a single mixer control.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct soc_mixer_control *mc =
+		(struct soc_mixer_control *)kcontrol->private_value;
+	unsigned int reg = mc->reg;
+	unsigned int rreg = mc->rreg;
+	unsigned int shift = mc->shift;
+	int min = mc->min;
+	int max = mc->max;
+	unsigned int mask = (1 << fls(max)) - 1;
+	unsigned int invert = mc->invert;
+	unsigned int val;
+	int ret;
+
+	ret = snd_soc_component_read(component, reg, &val);
+	if (ret)
+		return ret;
+
+	ucontrol->value.integer.value[0] = (val >> shift) & mask;
+	if (invert)
+		ucontrol->value.integer.value[0] =
+			max - ucontrol->value.integer.value[0];
+	else
+		ucontrol->value.integer.value[0] =
+			ucontrol->value.integer.value[0] - min;
+
+	if (snd_soc_volsw_is_stereo(mc)) {
+		ret = snd_soc_component_read(component, rreg, &val);
+		if (ret)
+			return ret;
+
+		ucontrol->value.integer.value[1] = (val >> shift) & mask;
+		if (invert)
+			ucontrol->value.integer.value[1] =
+				max - ucontrol->value.integer.value[1];
+		else
+			ucontrol->value.integer.value[1] =
+				ucontrol->value.integer.value[1] - min;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
+
+/**
+ * snd_soc_limit_volume - Set new limit to an existing volume control.
+ *
+ * @codec: where to look for the control
+ * @name: Name of the control
+ * @max: new maximum limit
+ *
+ * Return 0 for success, else error.
+ */
+int snd_soc_limit_volume(struct snd_soc_codec *codec,
+	const char *name, int max)
+{
+	struct snd_card *card = codec->component.card->snd_card;
+	struct snd_kcontrol *kctl;
+	struct soc_mixer_control *mc;
+	int found = 0;
+	int ret = -EINVAL;
+
+	/* Sanity check for name and max */
+	if (unlikely(!name || max <= 0))
+		return -EINVAL;
+
+	list_for_each_entry(kctl, &card->controls, list) {
+		if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
+			found = 1;
+			break;
+		}
+	}
+	if (found) {
+		mc = (struct soc_mixer_control *)kctl->private_value;
+		if (max <= mc->max) {
+			mc->platform_max = max;
+			ret = 0;
+		}
+	}
+	return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
+
+int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
+		       struct snd_ctl_elem_info *uinfo)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct soc_bytes *params = (void *)kcontrol->private_value;
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
+	uinfo->count = params->num_regs * component->val_bytes;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
+
+int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
+		      struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct soc_bytes *params = (void *)kcontrol->private_value;
+	int ret;
+
+	if (component->regmap)
+		ret = regmap_raw_read(component->regmap, params->base,
+				      ucontrol->value.bytes.data,
+				      params->num_regs * component->val_bytes);
+	else
+		ret = -EINVAL;
+
+	/* Hide any masked bytes to ensure consistent data reporting */
+	if (ret == 0 && params->mask) {
+		switch (component->val_bytes) {
+		case 1:
+			ucontrol->value.bytes.data[0] &= ~params->mask;
+			break;
+		case 2:
+			((u16 *)(&ucontrol->value.bytes.data))[0]
+				&= cpu_to_be16(~params->mask);
+			break;
+		case 4:
+			((u32 *)(&ucontrol->value.bytes.data))[0]
+				&= cpu_to_be32(~params->mask);
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
+
+int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
+		      struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct soc_bytes *params = (void *)kcontrol->private_value;
+	int ret, len;
+	unsigned int val, mask;
+	void *data;
+
+	if (!component->regmap || !params->num_regs)
+		return -EINVAL;
+
+	len = params->num_regs * component->val_bytes;
+
+	data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
+	if (!data)
+		return -ENOMEM;
+
+	/*
+	 * If we've got a mask then we need to preserve the register
+	 * bits.  We shouldn't modify the incoming data so take a
+	 * copy.
+	 */
+	if (params->mask) {
+		ret = regmap_read(component->regmap, params->base, &val);
+		if (ret != 0)
+			goto out;
+
+		val &= params->mask;
+
+		switch (component->val_bytes) {
+		case 1:
+			((u8 *)data)[0] &= ~params->mask;
+			((u8 *)data)[0] |= val;
+			break;
+		case 2:
+			mask = ~params->mask;
+			ret = regmap_parse_val(component->regmap,
+							&mask, &mask);
+			if (ret != 0)
+				goto out;
+
+			((u16 *)data)[0] &= mask;
+
+			ret = regmap_parse_val(component->regmap,
+							&val, &val);
+			if (ret != 0)
+				goto out;
+
+			((u16 *)data)[0] |= val;
+			break;
+		case 4:
+			mask = ~params->mask;
+			ret = regmap_parse_val(component->regmap,
+							&mask, &mask);
+			if (ret != 0)
+				goto out;
+
+			((u32 *)data)[0] &= mask;
+
+			ret = regmap_parse_val(component->regmap,
+							&val, &val);
+			if (ret != 0)
+				goto out;
+
+			((u32 *)data)[0] |= val;
+			break;
+		default:
+			ret = -EINVAL;
+			goto out;
+		}
+	}
+
+	ret = regmap_raw_write(component->regmap, params->base,
+			       data, len);
+
+out:
+	kfree(data);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
+
+int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol,
+			struct snd_ctl_elem_info *ucontrol)
+{
+	struct soc_bytes_ext *params = (void *)kcontrol->private_value;
+
+	ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES;
+	ucontrol->count = params->max;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext);
+
+int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag,
+				unsigned int size, unsigned int __user *tlv)
+{
+	struct soc_bytes_ext *params = (void *)kcontrol->private_value;
+	unsigned int count = size < params->max ? size : params->max;
+	int ret = -ENXIO;
+
+	switch (op_flag) {
+	case SNDRV_CTL_TLV_OP_READ:
+		if (params->get)
+			ret = params->get(tlv, count);
+		break;
+	case SNDRV_CTL_TLV_OP_WRITE:
+		if (params->put)
+			ret = params->put(tlv, count);
+		break;
+	}
+	return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback);
+
+/**
+ * snd_soc_info_xr_sx - signed multi register info callback
+ * @kcontrol: mreg control
+ * @uinfo: control element information
+ *
+ * Callback to provide information of a control that can
+ * span multiple codec registers which together
+ * forms a single signed value in a MSB/LSB manner.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_info *uinfo)
+{
+	struct soc_mreg_control *mc =
+		(struct soc_mreg_control *)kcontrol->private_value;
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 1;
+	uinfo->value.integer.min = mc->min;
+	uinfo->value.integer.max = mc->max;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
+
+/**
+ * snd_soc_get_xr_sx - signed multi register get callback
+ * @kcontrol: mreg control
+ * @ucontrol: control element information
+ *
+ * Callback to get the value of a control that can span
+ * multiple codec registers which together forms a single
+ * signed value in a MSB/LSB manner. The control supports
+ * specifying total no of bits used to allow for bitfields
+ * across the multiple codec registers.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct soc_mreg_control *mc =
+		(struct soc_mreg_control *)kcontrol->private_value;
+	unsigned int regbase = mc->regbase;
+	unsigned int regcount = mc->regcount;
+	unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
+	unsigned int regwmask = (1<<regwshift)-1;
+	unsigned int invert = mc->invert;
+	unsigned long mask = (1UL<<mc->nbits)-1;
+	long min = mc->min;
+	long max = mc->max;
+	long val = 0;
+	unsigned int regval;
+	unsigned int i;
+	int ret;
+
+	for (i = 0; i < regcount; i++) {
+		ret = snd_soc_component_read(component, regbase+i, &regval);
+		if (ret)
+			return ret;
+		val |= (regval & regwmask) << (regwshift*(regcount-i-1));
+	}
+	val &= mask;
+	if (min < 0 && val > max)
+		val |= ~mask;
+	if (invert)
+		val = max - val;
+	ucontrol->value.integer.value[0] = val;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
+
+/**
+ * snd_soc_put_xr_sx - signed multi register get callback
+ * @kcontrol: mreg control
+ * @ucontrol: control element information
+ *
+ * Callback to set the value of a control that can span
+ * multiple codec registers which together forms a single
+ * signed value in a MSB/LSB manner. The control supports
+ * specifying total no of bits used to allow for bitfields
+ * across the multiple codec registers.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct soc_mreg_control *mc =
+		(struct soc_mreg_control *)kcontrol->private_value;
+	unsigned int regbase = mc->regbase;
+	unsigned int regcount = mc->regcount;
+	unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
+	unsigned int regwmask = (1<<regwshift)-1;
+	unsigned int invert = mc->invert;
+	unsigned long mask = (1UL<<mc->nbits)-1;
+	long max = mc->max;
+	long val = ucontrol->value.integer.value[0];
+	unsigned int i, regval, regmask;
+	int err;
+
+	if (invert)
+		val = max - val;
+	val &= mask;
+	for (i = 0; i < regcount; i++) {
+		regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
+		regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
+		err = snd_soc_component_update_bits(component, regbase+i,
+				regmask, regval);
+		if (err < 0)
+			return err;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
+
+/**
+ * snd_soc_get_strobe - strobe get callback
+ * @kcontrol: mixer control
+ * @ucontrol: control element information
+ *
+ * Callback get the value of a strobe mixer control.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct soc_mixer_control *mc =
+		(struct soc_mixer_control *)kcontrol->private_value;
+	unsigned int reg = mc->reg;
+	unsigned int shift = mc->shift;
+	unsigned int mask = 1 << shift;
+	unsigned int invert = mc->invert != 0;
+	unsigned int val;
+	int ret;
+
+	ret = snd_soc_component_read(component, reg, &val);
+	if (ret)
+		return ret;
+
+	val &= mask;
+
+	if (shift != 0 && val != 0)
+		val = val >> shift;
+	ucontrol->value.enumerated.item[0] = val ^ invert;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
+
+/**
+ * snd_soc_put_strobe - strobe put callback
+ * @kcontrol: mixer control
+ * @ucontrol: control element information
+ *
+ * Callback strobe a register bit to high then low (or the inverse)
+ * in one pass of a single mixer enum control.
+ *
+ * Returns 1 for success.
+ */
+int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct soc_mixer_control *mc =
+		(struct soc_mixer_control *)kcontrol->private_value;
+	unsigned int reg = mc->reg;
+	unsigned int shift = mc->shift;
+	unsigned int mask = 1 << shift;
+	unsigned int invert = mc->invert != 0;
+	unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
+	unsigned int val1 = (strobe ^ invert) ? mask : 0;
+	unsigned int val2 = (strobe ^ invert) ? 0 : mask;
+	int err;
+
+	err = snd_soc_component_update_bits(component, reg, mask, val1);
+	if (err < 0)
+		return err;
+
+	return snd_soc_component_update_bits(component, reg, mask, val2);
+}
+EXPORT_SYMBOL_GPL(snd_soc_put_strobe);

sound/soc/soc-pcm.c

@@ -654,6 +654,8 @@ static int soc_pcm_close(struct snd_pcm_substream *substream)
 			codec_dai->rate = 0;
 	}
 
+	snd_soc_dai_digital_mute(cpu_dai, 1, substream->stream);
+
 	if (cpu_dai->driver->ops->shutdown)
 		cpu_dai->driver->ops->shutdown(substream, cpu_dai);
 
@@ -772,6 +774,7 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
 	for (i = 0; i < rtd->num_codecs; i++)
 		snd_soc_dai_digital_mute(rtd->codec_dais[i], 0,
 					 substream->stream);
+	snd_soc_dai_digital_mute(cpu_dai, 0, substream->stream);
 
 out:
 	mutex_unlock(&rtd->pcm_mutex);

sound/soc/txx9/txx9aclc.c

@@ -292,7 +292,7 @@ static int txx9aclc_pcm_new(struct snd_soc_pcm_runtime *rtd)
 	struct snd_card *card = rtd->card->snd_card;
 	struct snd_soc_dai *dai = rtd->cpu_dai;
 	struct snd_pcm *pcm = rtd->pcm;
-	struct platform_device *pdev = to_platform_device(dai->platform->dev);
+	struct platform_device *pdev = to_platform_device(rtd->platform->dev);
 	struct txx9aclc_soc_device *dev;
 	struct resource *r;
 	int i;