Merge tag 'asoc-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into next/boards

The asoc branch that was already merged into v3.4 contains some
board-level changes that conflict with patches we already have
here, so pull in that branch to resolve the conflicts.

Conflicts:
	arch/arm/mach-imx/mach-imx27_visstrim_m10.c
	arch/arm/mach-omap2/board-omap4panda.c

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[olof: Amended fix for mismerge as reported by Kevin Hilman]
Signed-off-by: Olof Johansson <olof@lixom.net>

1 files changed, 285 insertions, 115 deletions

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 1315663c1c09..6241490fff30 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -14,19 +14,13 @@
  *      dynamic configuration of codec internal audio paths and active
  *      DACs/ADCs.
  *    o Platform power domain - can support external components i.e. amps and
- *      mic/meadphone insertion events.
+ *      mic/headphone insertion events.
  *    o Automatic Mic Bias support
  *    o Jack insertion power event initiation - e.g. hp insertion will enable
  *      sinks, dacs, etc
- *    o Delayed powerdown of audio susbsystem to reduce pops between a quick
+ *    o Delayed power down of audio subsystem to reduce pops between a quick
  *      device reopen.
  *
- *  Todo:
- *    o DAPM power change sequencing - allow for configurable per
- *      codec sequences.
- *    o Support for analogue bias optimisation.
- *    o Support for reduced codec oversampling rates.
- *    o Support for reduced codec bias currents.
  */
 
 #include <linux/module.h>
@@ -40,6 +34,7 @@
 #include <linux/jiffies.h>
 #include <linux/debugfs.h>
 #include <linux/pm_runtime.h>
+#include <linux/regulator/consumer.h>
 #include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -55,7 +50,9 @@
 static int dapm_up_seq[] = {
         [snd_soc_dapm_pre] = 0,
         [snd_soc_dapm_supply] = 1,
+        [snd_soc_dapm_regulator_supply] = 1,
         [snd_soc_dapm_micbias] = 2,
+        [snd_soc_dapm_dai] = 3,
         [snd_soc_dapm_aif_in] = 3,
         [snd_soc_dapm_aif_out] = 3,
         [snd_soc_dapm_mic] = 4,
@@ -90,6 +87,8 @@ static int dapm_down_seq[] = {
         [snd_soc_dapm_value_mux] = 9,
         [snd_soc_dapm_aif_in] = 10,
         [snd_soc_dapm_aif_out] = 10,
+        [snd_soc_dapm_dai] = 10,
+        [snd_soc_dapm_regulator_supply] = 11,
         [snd_soc_dapm_supply] = 11,
         [snd_soc_dapm_post] = 12,
 };
@@ -172,6 +171,19 @@ static inline struct snd_soc_card *dapm_get_soc_card(
         return NULL;
 }
 
+static void dapm_reset(struct snd_soc_card *card)
+{
+        struct snd_soc_dapm_widget *w;
+
+        memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
+
+        list_for_each_entry(w, &card->widgets, list) {
+                w->power_checked = false;
+                w->inputs = -1;
+                w->outputs = -1;
+        }
+}
+
 static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg)
 {
         if (w->codec)
@@ -197,21 +209,28 @@ static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val)
 static int soc_widget_update_bits(struct snd_soc_dapm_widget *w,
         unsigned short reg, unsigned int mask, unsigned int value)
 {
-        int change;
+        bool change;
         unsigned int old, new;
         int ret;
 
-        ret = soc_widget_read(w, reg);
-        if (ret < 0)
-                return ret;
-
-        old = ret;
-        new = (old & ~mask) | (value & mask);
-        change = old != new;
-        if (change) {
-                ret = soc_widget_write(w, reg, new);
+        if (w->codec && w->codec->using_regmap) {
+                ret = regmap_update_bits_check(w->codec->control_data,
+                                               reg, mask, value, &change);
+                if (ret != 0)
+                        return ret;
+        } else {
+                ret = soc_widget_read(w, reg);
                 if (ret < 0)
                         return ret;
+
+                old = ret;
+                new = (old & ~mask) | (value & mask);
+                change = old != new;
+                if (change) {
+                        ret = soc_widget_write(w, reg, new);
+                        if (ret < 0)
+                                return ret;
+                }
         }
 
         return change;
@@ -345,8 +364,10 @@ static void dapm_set_path_status(struct snd_soc_dapm_widget *w,
         case snd_soc_dapm_micbias:
         case snd_soc_dapm_vmid:
         case snd_soc_dapm_supply:
+        case snd_soc_dapm_regulator_supply:
         case snd_soc_dapm_aif_in:
         case snd_soc_dapm_aif_out:
+        case snd_soc_dapm_dai:
         case snd_soc_dapm_hp:
         case snd_soc_dapm_mic:
         case snd_soc_dapm_spk:
@@ -504,17 +525,17 @@ static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
                                  * for widgets so cut the prefix off
                                  * the front of the widget name.
                                  */
-                                snprintf(path->long_name, name_len, "%s %s",
-                                         w->name + prefix_len,
+                                snprintf((char *)path->long_name, name_len,
+                                         "%s %s", w->name + prefix_len,
                                          w->kcontrol_news[i].name);
                                 break;
                         case snd_soc_dapm_mixer_named_ctl:
-                                snprintf(path->long_name, name_len, "%s",
-                                         w->kcontrol_news[i].name);
+                                snprintf((char *)path->long_name, name_len,
+                                         "%s", w->kcontrol_news[i].name);
                                 break;
                         }
 
-                        path->long_name[name_len - 1] = '\0';
+                        ((char *)path->long_name)[name_len - 1] = '\0';
 
                         path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i],
                                                       wlist, path->long_name,
@@ -548,7 +569,7 @@ static int dapm_new_mux(struct snd_soc_dapm_widget *w)
         struct snd_soc_dapm_widget_list *wlist;
         int shared, wlistentries;
         size_t wlistsize;
-        char *name;
+        const char *name;
 
         if (w->num_kcontrols != 1) {
                 dev_err(dapm->dev,
@@ -673,12 +694,18 @@ static int is_connected_output_ep(struct snd_soc_dapm_widget *widget)
 
         DAPM_UPDATE_STAT(widget, path_checks);
 
-        if (widget->id == snd_soc_dapm_supply)
+        switch (widget->id) {
+        case snd_soc_dapm_supply:
+        case snd_soc_dapm_regulator_supply:
                 return 0;
+        default:
+                break;
+        }
 
         switch (widget->id) {
         case snd_soc_dapm_adc:
         case snd_soc_dapm_aif_out:
+        case snd_soc_dapm_dai:
                 if (widget->active) {
                         widget->outputs = snd_soc_dapm_suspend_check(widget);
                         return widget->outputs;
@@ -738,13 +765,19 @@ static int is_connected_input_ep(struct snd_soc_dapm_widget *widget)
 
         DAPM_UPDATE_STAT(widget, path_checks);
 
-        if (widget->id == snd_soc_dapm_supply)
+        switch (widget->id) {
+        case snd_soc_dapm_supply:
+        case snd_soc_dapm_regulator_supply:
                 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:
                 if (widget->active) {
                         widget->inputs = snd_soc_dapm_suspend_check(widget);
                         return widget->inputs;
@@ -821,6 +854,19 @@ int dapm_reg_event(struct snd_soc_dapm_widget *w,
 }
 EXPORT_SYMBOL_GPL(dapm_reg_event);
 
+/*
+ * Handler for regulator supply widget.
+ */
+int dapm_regulator_event(struct snd_soc_dapm_widget *w,
+                   struct snd_kcontrol *kcontrol, int event)
+{
+        if (SND_SOC_DAPM_EVENT_ON(event))
+                return regulator_enable(w->priv);
+        else
+                return regulator_disable_deferred(w->priv, w->shift);
+}
+EXPORT_SYMBOL_GPL(dapm_regulator_event);
+
 static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
 {
         if (w->power_checked)
@@ -851,6 +897,13 @@ static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
         return out != 0 && in != 0;
 }
 
+static int dapm_dai_check_power(struct snd_soc_dapm_widget *w)
+{
+        DAPM_UPDATE_STAT(w, power_checks);
+
+        return w->active;
+}
+
 /* Check to see if an ADC has power */
 static int dapm_adc_check_power(struct snd_soc_dapm_widget *w)
 {
@@ -1251,7 +1304,7 @@ static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
                         dev_err(d->dev, "Failed to turn off bias: %d\n", ret);
 
                 if (d->dev)
-                        pm_runtime_put_sync(d->dev);
+                        pm_runtime_put(d->dev);
         }
 
         /* If we just powered up then move to active bias */
@@ -1301,6 +1354,7 @@ static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
         }
         switch (w->id) {
         case snd_soc_dapm_supply:
+        case snd_soc_dapm_regulator_supply:
                 /* Supplies can't affect their outputs, only their inputs */
                 break;
         default:
@@ -1373,13 +1427,7 @@ static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event)
                 }
         }
 
-        memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
-
-        list_for_each_entry(w, &card->widgets, list) {
-                w->power_checked = false;
-                w->inputs = -1;
-                w->outputs = -1;
-        }
+        dapm_reset(card);
 
         /* Check which widgets we need to power and store them in
          * lists indicating if they should be powered up or down.  We
@@ -1400,10 +1448,15 @@ static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event)
                         /* Supplies and micbiases only bring the
                          * context up to STANDBY as unless something
                          * else is active and passing audio they
-                         * generally don't require full power.
+                         * generally don't require full power.  Signal
+                         * generators are virtual pins and have no
+                         * power impact themselves.
                          */
                         switch (w->id) {
+                        case snd_soc_dapm_siggen:
+                                break;
                         case snd_soc_dapm_supply:
+                        case snd_soc_dapm_regulator_supply:
                         case snd_soc_dapm_micbias:
                                 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
                                         d->target_bias_level = SND_SOC_BIAS_STANDBY;
@@ -1475,6 +1528,12 @@ static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event)
                                         &async_domain);
         async_synchronize_full_domain(&async_domain);
 
+        /* do we need to notify any clients that DAPM event is complete */
+        list_for_each_entry(d, &card->dapm_list, list) {
+                if (d->stream_event)
+                        d->stream_event(d, event);
+        }
+
         pop_dbg(dapm->dev, card->pop_time,
                 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
         pop_wait(card->pop_time);
@@ -1510,8 +1569,9 @@ static ssize_t dapm_widget_power_read_file(struct file *file,
         out = is_connected_output_ep(w);
         dapm_clear_walk(w->dapm);
 
-        ret = snprintf(buf, PAGE_SIZE, "%s: %s  in %d out %d",
-                       w->name, w->power ? "On" : "Off", in, out);
+        ret = snprintf(buf, PAGE_SIZE, "%s: %s%s  in %d out %d",
+                       w->name, w->power ? "On" : "Off",
+                       w->force ? " (forced)" : "", in, out);
 
         if (w->reg >= 0)
                 ret += snprintf(buf + ret, PAGE_SIZE - ret,
@@ -1607,7 +1667,7 @@ void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
         dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
 
         if (!dapm->debugfs_dapm) {
-                printk(KERN_WARNING
+                dev_warn(dapm->dev,
                        "Failed to create DAPM debugfs directory\n");
                 return;
         }
@@ -1659,9 +1719,8 @@ static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
 #endif
 
 /* test and update the power status of a mux widget */
-static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
-                                 struct snd_kcontrol *kcontrol, int change,
-                                 int mux, struct soc_enum *e)
+int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
+                                 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
 {
         struct snd_soc_dapm_path *path;
         int found = 0;
@@ -1671,9 +1730,6 @@ static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
             widget->id != snd_soc_dapm_value_mux)
                 return -ENODEV;
 
-        if (!change)
-                return 0;
-
         /* find dapm widget path assoc with kcontrol */
         list_for_each_entry(path, &widget->dapm->card->paths, list) {
                 if (path->kcontrol != kcontrol)
@@ -1702,9 +1758,10 @@ static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
 
         return 0;
 }
+EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
 
 /* test and update the power status of a mixer or switch widget */
-static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget,
+int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_widget *widget,
                                    struct snd_kcontrol *kcontrol, int connect)
 {
         struct snd_soc_dapm_path *path;
@@ -1733,6 +1790,7 @@ static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget,
 
         return 0;
 }
+EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
 
 /* show dapm widget status in sys fs */
 static ssize_t dapm_widget_show(struct device *dev,
@@ -1762,6 +1820,7 @@ static ssize_t dapm_widget_show(struct device *dev,
                 case snd_soc_dapm_mixer:
                 case snd_soc_dapm_mixer_named_ctl:
                 case snd_soc_dapm_supply:
+                case snd_soc_dapm_regulator_supply:
                         if (w->name)
                                 count += sprintf(buf + count, "%s: %s\n",
                                         w->name, w->power ? "On":"Off");
@@ -1869,10 +1928,12 @@ static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
                 return -EINVAL;
         }
 
+        if (w->connected != status)
+                dapm_mark_dirty(w, "pin configuration");
+
         w->connected = status;
         if (status == 0)
                 w->force = 0;
-        dapm_mark_dirty(w, "pin configuration");
 
         return 0;
 }
@@ -2000,8 +2061,10 @@ static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
         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_aif_in:
         case snd_soc_dapm_aif_out:
+        case snd_soc_dapm_dai:
                 list_add(&path->list, &dapm->card->paths);
                 list_add(&path->list_sink, &wsink->sources);
                 list_add(&path->list_source, &wsource->sinks);
@@ -2315,7 +2378,7 @@ int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
                         update.val = val;
                         widget->dapm->update = &update;
 
-                        dapm_mixer_update_power(widget, kcontrol, connect);
+                        snd_soc_dapm_mixer_update_power(widget, kcontrol, connect);
 
                         widget->dapm->update = NULL;
                 }
@@ -2406,7 +2469,7 @@ int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
                         update.val = val;
                         widget->dapm->update = &update;
 
-                        dapm_mux_update_power(widget, kcontrol, change, mux, e);
+                        snd_soc_dapm_mux_update_power(widget, kcontrol, mux, e);
 
                         widget->dapm->update = NULL;
                 }
@@ -2467,8 +2530,7 @@ int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol,
 
                         widget->value = ucontrol->value.enumerated.item[0];
 
-                        dapm_mux_update_power(widget, kcontrol, change,
-                                              widget->value, e);
+                        snd_soc_dapm_mux_update_power(widget, kcontrol, widget->value, e);
                 }
         }
 
@@ -2571,7 +2633,7 @@ int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol,
                         update.val = val;
                         widget->dapm->update = &update;
 
-                        dapm_mux_update_power(widget, kcontrol, change, mux, e);
+                        snd_soc_dapm_mux_update_power(widget, kcontrol, mux, e);
 
                         widget->dapm->update = NULL;
                 }
@@ -2611,15 +2673,15 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
                                 struct snd_ctl_elem_value *ucontrol)
 {
-        struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+        struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
         const char *pin = (const char *)kcontrol->private_value;
 
-        mutex_lock(&codec->mutex);
+        mutex_lock(&card->mutex);
 
         ucontrol->value.integer.value[0] =
-                snd_soc_dapm_get_pin_status(&codec->dapm, pin);
+                snd_soc_dapm_get_pin_status(&card->dapm, pin);
 
-        mutex_unlock(&codec->mutex);
+        mutex_unlock(&card->mutex);
 
         return 0;
 }
@@ -2634,41 +2696,48 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
                                 struct snd_ctl_elem_value *ucontrol)
 {
-        struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+        struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
         const char *pin = (const char *)kcontrol->private_value;
 
-        mutex_lock(&codec->mutex);
+        mutex_lock(&card->mutex);
 
         if (ucontrol->value.integer.value[0])
-                snd_soc_dapm_enable_pin(&codec->dapm, pin);
+                snd_soc_dapm_enable_pin(&card->dapm, pin);
         else
-                snd_soc_dapm_disable_pin(&codec->dapm, pin);
+                snd_soc_dapm_disable_pin(&card->dapm, pin);
 
-        snd_soc_dapm_sync(&codec->dapm);
+        snd_soc_dapm_sync(&card->dapm);
 
-        mutex_unlock(&codec->mutex);
+        mutex_unlock(&card->mutex);
 
         return 0;
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
 
-/**
- * snd_soc_dapm_new_control - create new dapm control
- * @dapm: DAPM context
- * @widget: widget template
- *
- * Creates a new dapm control based upon the template.
- *
- * Returns 0 for success else error.
- */
-int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
-        const struct snd_soc_dapm_widget *widget)
+static struct snd_soc_dapm_widget *
+snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
+                         const struct snd_soc_dapm_widget *widget)
 {
         struct snd_soc_dapm_widget *w;
         size_t name_len;
+        int ret;
 
         if ((w = dapm_cnew_widget(widget)) == NULL)
-                return -ENOMEM;
+                return NULL;
+
+        switch (w->id) {
+        case snd_soc_dapm_regulator_supply:
+                w->priv = devm_regulator_get(dapm->dev, w->name);
+                if (IS_ERR(w->priv)) {
+                        ret = PTR_ERR(w->priv);
+                        dev_err(dapm->dev, "Failed to request %s: %d\n",
+                                w->name, ret);
+                        return NULL;
+                }
+                break;
+        default:
+                break;
+        }
 
         name_len = strlen(widget->name) + 1;
         if (dapm->codec && dapm->codec->name_prefix)
@@ -2676,13 +2745,13 @@ int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
         w->name = kmalloc(name_len, GFP_KERNEL);
         if (w->name == NULL) {
                 kfree(w);
-                return -ENOMEM;
+                return NULL;
         }
         if (dapm->codec && dapm->codec->name_prefix)
-                snprintf(w->name, name_len, "%s %s",
+                snprintf((char *)w->name, name_len, "%s %s",
                         dapm->codec->name_prefix, widget->name);
         else
-                snprintf(w->name, name_len, "%s", widget->name);
+                snprintf((char *)w->name, name_len, "%s", widget->name);
 
         switch (w->id) {
         case snd_soc_dapm_switch:
@@ -2715,8 +2784,12 @@ int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
                 w->power_check = dapm_generic_check_power;
                 break;
         case snd_soc_dapm_supply:
+        case snd_soc_dapm_regulator_supply:
                 w->power_check = dapm_supply_check_power;
                 break;
+        case snd_soc_dapm_dai:
+                w->power_check = dapm_dai_check_power;
+                break;
         default:
                 w->power_check = dapm_always_on_check_power;
                 break;
@@ -2734,9 +2807,8 @@ int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
 
         /* machine layer set ups unconnected pins and insertions */
         w->connected = 1;
-        return 0;
+        return w;
 }
-EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control);
 
 /**
  * snd_soc_dapm_new_controls - create new dapm controls
@@ -2752,15 +2824,16 @@ int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
         const struct snd_soc_dapm_widget *widget,
         int num)
 {
-        int i, ret;
+        struct snd_soc_dapm_widget *w;
+        int i;
 
         for (i = 0; i < num; i++) {
-                ret = snd_soc_dapm_new_control(dapm, widget);
-                if (ret < 0) {
+                w = snd_soc_dapm_new_control(dapm, widget);
+                if (!w) {
                         dev_err(dapm->dev,
-                                "ASoC: Failed to create DAPM control %s: %d\n",
-                                widget->name, ret);
-                        return ret;
+                                "ASoC: Failed to create DAPM control %s\n",
+                                widget->name);
+                        return -ENOMEM;
                 }
                 widget++;
         }
@@ -2768,40 +2841,140 @@ int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
 
-static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm,
-        const char *stream, int event)
+int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
+                                 struct snd_soc_dai *dai)
 {
+        struct snd_soc_dapm_widget template;
         struct snd_soc_dapm_widget *w;
 
-        list_for_each_entry(w, &dapm->card->widgets, list)
-        {
-                if (!w->sname || w->dapm != dapm)
+        WARN_ON(dapm->dev != dai->dev);
+
+        memset(&template, 0, sizeof(template));
+        template.reg = SND_SOC_NOPM;
+
+        if (dai->driver->playback.stream_name) {
+                template.id = snd_soc_dapm_dai;
+                template.name = dai->driver->playback.stream_name;
+                template.sname = dai->driver->playback.stream_name;
+
+                dev_dbg(dai->dev, "adding %s widget\n",
+                        template.name);
+
+                w = snd_soc_dapm_new_control(dapm, &template);
+                if (!w) {
+                        dev_err(dapm->dev, "Failed to create %s widget\n",
+                                dai->driver->playback.stream_name);
+                }
+
+                w->priv = dai;
+                dai->playback_widget = w;
+        }
+
+        if (dai->driver->capture.stream_name) {
+                template.id = snd_soc_dapm_dai;
+                template.name = dai->driver->capture.stream_name;
+                template.sname = dai->driver->capture.stream_name;
+
+                dev_dbg(dai->dev, "adding %s widget\n",
+                        template.name);
+
+                w = snd_soc_dapm_new_control(dapm, &template);
+                if (!w) {
+                        dev_err(dapm->dev, "Failed to create %s widget\n",
+                                dai->driver->capture.stream_name);
+                }
+
+                w->priv = dai;
+                dai->capture_widget = w;
+        }
+
+        return 0;
+}
+
+int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
+{
+        struct snd_soc_dapm_widget *dai_w, *w;
+        struct snd_soc_dai *dai;
+        struct snd_soc_dapm_route r;
+
+        memset(&r, 0, sizeof(r));
+
+        /* For each DAI widget... */
+        list_for_each_entry(dai_w, &card->widgets, list) {
+                if (dai_w->id != snd_soc_dapm_dai)
                         continue;
-                dev_vdbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n",
-                        w->name, w->sname, stream, event);
-                if (strstr(w->sname, stream)) {
-                        dapm_mark_dirty(w, "stream event");
-                        switch(event) {
-                        case SND_SOC_DAPM_STREAM_START:
-                                w->active = 1;
-                                break;
-                        case SND_SOC_DAPM_STREAM_STOP:
-                                w->active = 0;
-                                break;
-                        case SND_SOC_DAPM_STREAM_SUSPEND:
-                        case SND_SOC_DAPM_STREAM_RESUME:
-                        case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
-                        case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
-                                break;
+
+                dai = dai_w->priv;
+
+                /* ...find all widgets with the same stream and link them */
+                list_for_each_entry(w, &card->widgets, list) {
+                        if (w->dapm != dai_w->dapm)
+                                continue;
+
+                        if (w->id == snd_soc_dapm_dai)
+                                continue;
+
+                        if (!w->sname)
+                                continue;
+
+                        if (dai->driver->playback.stream_name &&
+                            strstr(w->sname,
+                                   dai->driver->playback.stream_name)) {
+                                r.source = dai->playback_widget->name;
+                                r.sink = w->name;
+                                dev_dbg(dai->dev, "%s -> %s\n",
+                                         r.source, r.sink);
+
+                                snd_soc_dapm_add_route(w->dapm, &r);
+                        }
+
+                        if (dai->driver->capture.stream_name &&
+                            strstr(w->sname,
+                                   dai->driver->capture.stream_name)) {
+                                r.source = w->name;
+                                r.sink = dai->capture_widget->name;
+                                dev_dbg(dai->dev, "%s -> %s\n",
+                                        r.source, r.sink);
+
+                                snd_soc_dapm_add_route(w->dapm, &r);
                         }
                 }
         }
 
-        dapm_power_widgets(dapm, event);
+        return 0;
+}
 
-        /* do we need to notify any clients that DAPM stream is complete */
-        if (dapm->stream_event)
-                dapm->stream_event(dapm, event);
+static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm,
+                                  int stream, struct snd_soc_dai *dai,
+                                  int event)
+{
+        struct snd_soc_dapm_widget *w;
+
+        if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+                w = dai->playback_widget;
+        else
+                w = dai->capture_widget;
+
+        if (!w)
+                return;
+
+        dapm_mark_dirty(w, "stream event");
+
+        switch (event) {
+        case SND_SOC_DAPM_STREAM_START:
+                w->active = 1;
+                break;
+        case SND_SOC_DAPM_STREAM_STOP:
+                w->active = 0;
+                break;
+        case SND_SOC_DAPM_STREAM_SUSPEND:
+        case SND_SOC_DAPM_STREAM_RESUME:
+        case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
+        case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
+                break;
+        }
+
+        dapm_power_widgets(dapm, event);
 }
 
 /**
@@ -2815,16 +2988,13 @@ static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm,
  *
  * Returns 0 for success else error.
  */
-int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd,
-        const char *stream, int event)
+int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
+                              struct snd_soc_dai *dai, int event)
 {
         struct snd_soc_codec *codec = rtd->codec;
 
-        if (stream == NULL)
-                return 0;
-
         mutex_lock(&codec->mutex);
-        soc_dapm_stream_event(&codec->dapm, stream, event);
+        soc_dapm_stream_event(&codec->dapm, stream, dai, event);
         mutex_unlock(&codec->mutex);
         return 0;
 }