From fafd2176f72148e83c64a1f818ff33fceed83d08 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Thu, 28 Apr 2011 17:38:00 -0600 Subject: [PATCH] ASoC: Store a list of widgets in a DAPM mux/mixer kcontrol A future change will allow multiple widgets to be affected by the same control. For example, a single register bit that controls separate muxes in both the L and R audio paths. This change updates the code that handles relevant controls to be able to iterate over a list of affected widgets. Note that only the put functions need significant modification to implement the iteration; the get functions do not need to iterate, nor unify the results, since all affected widgets reference the same kcontrol. When creating the list of widgets, always create a 1-sized list, since the control sharing is not implemented in this change. Signed-off-by: Stephen Warren Acked-by: Liam Girdwood Signed-off-by: Mark Brown --- include/sound/soc-dapm.h | 6 ++ sound/soc/soc-dapm.c | 187 +++++++++++++++++++++++++++++++++-------------- 2 files changed, 137 insertions(+), 56 deletions(-) diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h index b25bf0f..c46e7d8 100644 --- a/include/sound/soc-dapm.h +++ b/include/sound/soc-dapm.h @@ -518,4 +518,10 @@ struct snd_soc_dapm_context { #endif }; +/* A list of widgets associated with an object, typically a snd_kcontrol */ +struct snd_soc_dapm_widget_list { + int num_widgets; + struct snd_soc_dapm_widget *widgets[0]; +}; + #endif diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 85b2c94..79b836c 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -333,6 +333,8 @@ static int dapm_new_mixer(struct snd_soc_dapm_context *dapm, struct snd_soc_dapm_path *path; struct snd_card *card = dapm->card->snd_card; const char *prefix; + struct snd_soc_dapm_widget_list *wlist; + size_t wlistsize; if (dapm->codec) prefix = dapm->codec->name_prefix; @@ -354,6 +356,18 @@ static int dapm_new_mixer(struct snd_soc_dapm_context *dapm, if (path->name != (char *)w->kcontrol_news[i].name) continue; + wlistsize = sizeof(struct snd_soc_dapm_widget_list) + + sizeof(struct snd_soc_dapm_widget *), + wlist = kzalloc(wlistsize, GFP_KERNEL); + if (wlist == NULL) { + dev_err(dapm->dev, + "asoc: can't allocate widget list for %s\n", + w->name); + return -ENOMEM; + } + wlist->num_widgets = 1; + wlist->widgets[0] = w; + /* add dapm control with long name. * for dapm_mixer this is the concatenation of the * mixer and kcontrol name. @@ -366,8 +380,10 @@ static int dapm_new_mixer(struct snd_soc_dapm_context *dapm, path->long_name = kmalloc(name_len, GFP_KERNEL); - if (path->long_name == NULL) + if (path->long_name == NULL) { + kfree(wlist); return -ENOMEM; + } switch (w->id) { default: @@ -389,13 +405,15 @@ static int dapm_new_mixer(struct snd_soc_dapm_context *dapm, path->long_name[name_len - 1] = '\0'; - path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i], w, - path->long_name, prefix); + path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i], + wlist, path->long_name, + prefix); ret = snd_ctl_add(card, path->kcontrol); if (ret < 0) { dev_err(dapm->dev, "asoc: failed to add dapm kcontrol %s: %d\n", path->long_name, ret); + kfree(wlist); kfree(path->long_name); path->long_name = NULL; return ret; @@ -416,12 +434,25 @@ static int dapm_new_mux(struct snd_soc_dapm_context *dapm, const char *prefix; size_t prefix_len; int ret = 0; + struct snd_soc_dapm_widget_list *wlist; + size_t wlistsize; if (!w->num_kcontrols) { dev_err(dapm->dev, "asoc: mux %s has no controls\n", w->name); return -EINVAL; } + wlistsize = sizeof(struct snd_soc_dapm_widget_list) + + sizeof(struct snd_soc_dapm_widget *), + wlist = kzalloc(wlistsize, GFP_KERNEL); + if (wlist == NULL) { + dev_err(dapm->dev, + "asoc: can't allocate widget list for %s\n", w->name); + return -ENOMEM; + } + wlist->num_widgets = 1; + wlist->widgets[0] = w; + if (dapm->codec) prefix = dapm->codec->name_prefix; else @@ -436,8 +467,8 @@ static int dapm_new_mux(struct snd_soc_dapm_context *dapm, * process but we're also using the same prefix for widgets so * cut the prefix off the front of the widget name. */ - kcontrol = snd_soc_cnew(&w->kcontrol_news[0], w, w->name + prefix_len, - prefix); + kcontrol = snd_soc_cnew(&w->kcontrol_news[0], wlist, + w->name + prefix_len, prefix); ret = snd_ctl_add(card, kcontrol); if (ret < 0) @@ -452,6 +483,7 @@ static int dapm_new_mux(struct snd_soc_dapm_context *dapm, err: dev_err(dapm->dev, "asoc: failed to add kcontrol %s\n", w->name); + kfree(wlist); return ret; } @@ -1818,7 +1850,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_widget *widget = wlist->widgets[0]; struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; unsigned int reg = mc->reg; @@ -1857,7 +1890,9 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_widget *widget = wlist->widgets[0]; + struct snd_soc_codec *codec = widget->codec; struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; unsigned int reg = mc->reg; @@ -1868,6 +1903,7 @@ int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, unsigned int val; int connect, change; struct snd_soc_dapm_update update; + int wi; val = (ucontrol->value.integer.value[0] & mask); @@ -1876,31 +1912,36 @@ int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, mask = mask << shift; val = val << shift; - mutex_lock(&widget->codec->mutex); - widget->value = val; + if (val) + /* new connection */ + connect = invert ? 0 : 1; + else + /* old connection must be powered down */ + connect = invert ? 1 : 0; + + mutex_lock(&codec->mutex); change = snd_soc_test_bits(widget->codec, reg, mask, val); if (change) { - if (val) - /* new connection */ - connect = invert ? 0:1; - else - /* old connection must be powered down */ - connect = invert ? 1:0; + for (wi = 0; wi < wlist->num_widgets; wi++) { + widget = wlist->widgets[wi]; - update.kcontrol = kcontrol; - update.widget = widget; - update.reg = reg; - update.mask = mask; - update.val = val; - widget->dapm->update = &update; + widget->value = val; - dapm_mixer_update_power(widget, kcontrol, connect); + update.kcontrol = kcontrol; + update.widget = widget; + update.reg = reg; + update.mask = mask; + update.val = val; + widget->dapm->update = &update; - widget->dapm->update = NULL; + dapm_mixer_update_power(widget, kcontrol, connect); + + widget->dapm->update = NULL; + } } - mutex_unlock(&widget->codec->mutex); + mutex_unlock(&codec->mutex); return 0; } EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); @@ -1917,7 +1958,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_widget *widget = wlist->widgets[0]; struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; unsigned int val, bitmask; @@ -1945,11 +1987,14 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_widget *widget = wlist->widgets[0]; + struct snd_soc_codec *codec = widget->codec; struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; unsigned int val, mux, change; unsigned int mask, bitmask; struct snd_soc_dapm_update update; + int wi; for (bitmask = 1; bitmask < e->max; bitmask <<= 1) ; @@ -1965,22 +2010,29 @@ int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, mask |= (bitmask - 1) << e->shift_r; } - mutex_lock(&widget->codec->mutex); - widget->value = val; + mutex_lock(&codec->mutex); + change = snd_soc_test_bits(widget->codec, e->reg, mask, val); + if (change) { + for (wi = 0; wi < wlist->num_widgets; wi++) { + widget = wlist->widgets[wi]; - update.kcontrol = kcontrol; - update.widget = widget; - update.reg = e->reg; - update.mask = mask; - update.val = val; - widget->dapm->update = &update; + widget->value = val; - dapm_mux_update_power(widget, kcontrol, change, mux, e); + update.kcontrol = kcontrol; + update.widget = widget; + update.reg = e->reg; + update.mask = mask; + update.val = val; + widget->dapm->update = &update; - widget->dapm->update = NULL; + dapm_mux_update_power(widget, kcontrol, change, mux, e); - mutex_unlock(&widget->codec->mutex); + widget->dapm->update = NULL; + } + } + + mutex_unlock(&codec->mutex); return change; } EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); @@ -1995,7 +2047,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_widget *widget = wlist->widgets[0]; ucontrol->value.enumerated.item[0] = widget->value; @@ -2013,22 +2066,33 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_widget *widget = wlist->widgets[0]; + struct snd_soc_codec *codec = widget->codec; struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; int change; int ret = 0; + int wi; if (ucontrol->value.enumerated.item[0] >= e->max) return -EINVAL; - mutex_lock(&widget->codec->mutex); + mutex_lock(&codec->mutex); change = widget->value != ucontrol->value.enumerated.item[0]; - widget->value = ucontrol->value.enumerated.item[0]; - dapm_mux_update_power(widget, kcontrol, change, widget->value, e); + if (change) { + for (wi = 0; wi < wlist->num_widgets; wi++) { + widget = wlist->widgets[wi]; + + widget->value = ucontrol->value.enumerated.item[0]; + + dapm_mux_update_power(widget, kcontrol, change, + widget->value, e); + } + } - mutex_unlock(&widget->codec->mutex); + mutex_unlock(&codec->mutex); return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); @@ -2049,7 +2113,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_widget *widget = wlist->widgets[0]; struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; unsigned int reg_val, val, mux; @@ -2089,11 +2154,14 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); + struct snd_soc_dapm_widget *widget = wlist->widgets[0]; + struct snd_soc_codec *codec = widget->codec; struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; unsigned int val, mux, change; unsigned int mask; struct snd_soc_dapm_update update; + int wi; if (ucontrol->value.enumerated.item[0] > e->max - 1) return -EINVAL; @@ -2107,22 +2175,29 @@ int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, mask |= e->mask << e->shift_r; } - mutex_lock(&widget->codec->mutex); - widget->value = val; + mutex_lock(&codec->mutex); + change = snd_soc_test_bits(widget->codec, e->reg, mask, val); + if (change) { + for (wi = 0; wi < wlist->num_widgets; wi++) { + widget = wlist->widgets[wi]; - update.kcontrol = kcontrol; - update.widget = widget; - update.reg = e->reg; - update.mask = mask; - update.val = val; - widget->dapm->update = &update; + widget->value = val; - dapm_mux_update_power(widget, kcontrol, change, mux, e); + update.kcontrol = kcontrol; + update.widget = widget; + update.reg = e->reg; + update.mask = mask; + update.val = val; + widget->dapm->update = &update; - widget->dapm->update = NULL; + dapm_mux_update_power(widget, kcontrol, change, mux, e); - mutex_unlock(&widget->codec->mutex); + widget->dapm->update = NULL; + } + } + + mutex_unlock(&codec->mutex); return change; } EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); -- 2.7.4