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 <swarren@nvidia.com> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Stephen Warren
Mark Brown
Родитель
fad598887d
Коммит
fafd2176f7
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@ -518,4 +518,10 @@ struct snd_soc_dapm_context {
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#endif
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};
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/* A list of widgets associated with an object, typically a snd_kcontrol */
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struct snd_soc_dapm_widget_list {
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int num_widgets;
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struct snd_soc_dapm_widget *widgets[0];
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};
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#endif
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@ -333,6 +333,8 @@ static int dapm_new_mixer(struct snd_soc_dapm_context *dapm,
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struct snd_soc_dapm_path *path;
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struct snd_card *card = dapm->card->snd_card;
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const char *prefix;
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struct snd_soc_dapm_widget_list *wlist;
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size_t wlistsize;
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if (dapm->codec)
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prefix = dapm->codec->name_prefix;
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@ -354,6 +356,18 @@ static int dapm_new_mixer(struct snd_soc_dapm_context *dapm,
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if (path->name != (char *)w->kcontrol_news[i].name)
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continue;
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wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
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sizeof(struct snd_soc_dapm_widget *),
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wlist = kzalloc(wlistsize, GFP_KERNEL);
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if (wlist == NULL) {
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dev_err(dapm->dev,
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"asoc: can't allocate widget list for %s\n",
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w->name);
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return -ENOMEM;
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}
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wlist->num_widgets = 1;
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wlist->widgets[0] = w;
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/* add dapm control with long name.
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* for dapm_mixer this is the concatenation of the
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* mixer and kcontrol name.
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@ -366,8 +380,10 @@ static int dapm_new_mixer(struct snd_soc_dapm_context *dapm,
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path->long_name = kmalloc(name_len, GFP_KERNEL);
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if (path->long_name == NULL)
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if (path->long_name == NULL) {
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kfree(wlist);
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return -ENOMEM;
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}
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switch (w->id) {
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default:
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@ -389,13 +405,15 @@ static int dapm_new_mixer(struct snd_soc_dapm_context *dapm,
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path->long_name[name_len - 1] = '\0';
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path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i], w,
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path->long_name, prefix);
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path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i],
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wlist, path->long_name,
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prefix);
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ret = snd_ctl_add(card, path->kcontrol);
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if (ret < 0) {
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dev_err(dapm->dev,
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"asoc: failed to add dapm kcontrol %s: %d\n",
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path->long_name, ret);
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kfree(wlist);
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kfree(path->long_name);
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path->long_name = NULL;
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return ret;
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@ -416,12 +434,25 @@ static int dapm_new_mux(struct snd_soc_dapm_context *dapm,
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const char *prefix;
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size_t prefix_len;
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int ret = 0;
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struct snd_soc_dapm_widget_list *wlist;
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size_t wlistsize;
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if (!w->num_kcontrols) {
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dev_err(dapm->dev, "asoc: mux %s has no controls\n", w->name);
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return -EINVAL;
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}
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wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
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sizeof(struct snd_soc_dapm_widget *),
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wlist = kzalloc(wlistsize, GFP_KERNEL);
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if (wlist == NULL) {
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dev_err(dapm->dev,
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"asoc: can't allocate widget list for %s\n", w->name);
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return -ENOMEM;
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}
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wlist->num_widgets = 1;
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wlist->widgets[0] = w;
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if (dapm->codec)
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prefix = dapm->codec->name_prefix;
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else
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@ -436,8 +467,8 @@ static int dapm_new_mux(struct snd_soc_dapm_context *dapm,
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* process but we're also using the same prefix for widgets so
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* cut the prefix off the front of the widget name.
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*/
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kcontrol = snd_soc_cnew(&w->kcontrol_news[0], w, w->name + prefix_len,
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prefix);
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kcontrol = snd_soc_cnew(&w->kcontrol_news[0], wlist,
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w->name + prefix_len, prefix);
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ret = snd_ctl_add(card, kcontrol);
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if (ret < 0)
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@ -452,6 +483,7 @@ static int dapm_new_mux(struct snd_soc_dapm_context *dapm,
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err:
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dev_err(dapm->dev, "asoc: failed to add kcontrol %s\n", w->name);
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kfree(wlist);
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return ret;
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}
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@ -1818,7 +1850,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
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int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
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struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
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struct snd_soc_dapm_widget *widget = wlist->widgets[0];
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struct soc_mixer_control *mc =
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(struct soc_mixer_control *)kcontrol->private_value;
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unsigned int reg = mc->reg;
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@ -1857,7 +1890,9 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
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int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
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struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
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struct snd_soc_dapm_widget *widget = wlist->widgets[0];
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struct snd_soc_codec *codec = widget->codec;
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struct soc_mixer_control *mc =
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(struct soc_mixer_control *)kcontrol->private_value;
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unsigned int reg = mc->reg;
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@ -1868,6 +1903,7 @@ int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
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unsigned int val;
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int connect, change;
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struct snd_soc_dapm_update update;
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int wi;
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val = (ucontrol->value.integer.value[0] & mask);
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@ -1876,31 +1912,36 @@ int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
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mask = mask << shift;
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val = val << shift;
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mutex_lock(&widget->codec->mutex);
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widget->value = val;
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if (val)
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/* new connection */
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connect = invert ? 0 : 1;
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else
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/* old connection must be powered down */
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connect = invert ? 1 : 0;
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mutex_lock(&codec->mutex);
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change = snd_soc_test_bits(widget->codec, reg, mask, val);
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if (change) {
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if (val)
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/* new connection */
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connect = invert ? 0:1;
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else
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/* old connection must be powered down */
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connect = invert ? 1:0;
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for (wi = 0; wi < wlist->num_widgets; wi++) {
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widget = wlist->widgets[wi];
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update.kcontrol = kcontrol;
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update.widget = widget;
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update.reg = reg;
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update.mask = mask;
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update.val = val;
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widget->dapm->update = &update;
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widget->value = val;
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dapm_mixer_update_power(widget, kcontrol, connect);
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update.kcontrol = kcontrol;
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update.widget = widget;
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update.reg = reg;
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update.mask = mask;
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update.val = val;
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widget->dapm->update = &update;
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widget->dapm->update = NULL;
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dapm_mixer_update_power(widget, kcontrol, connect);
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widget->dapm->update = NULL;
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}
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}
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mutex_unlock(&widget->codec->mutex);
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mutex_unlock(&codec->mutex);
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return 0;
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}
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EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
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@ -1917,7 +1958,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
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int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
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struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
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struct snd_soc_dapm_widget *widget = wlist->widgets[0];
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struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
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unsigned int val, bitmask;
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@ -1945,11 +1987,14 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
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int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
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struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
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struct snd_soc_dapm_widget *widget = wlist->widgets[0];
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struct snd_soc_codec *codec = widget->codec;
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struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
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unsigned int val, mux, change;
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unsigned int mask, bitmask;
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struct snd_soc_dapm_update update;
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int wi;
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for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
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;
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@ -1965,22 +2010,29 @@ int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
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mask |= (bitmask - 1) << e->shift_r;
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}
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mutex_lock(&widget->codec->mutex);
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widget->value = val;
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mutex_lock(&codec->mutex);
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change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
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if (change) {
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for (wi = 0; wi < wlist->num_widgets; wi++) {
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widget = wlist->widgets[wi];
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update.kcontrol = kcontrol;
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update.widget = widget;
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update.reg = e->reg;
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update.mask = mask;
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update.val = val;
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widget->dapm->update = &update;
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widget->value = val;
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dapm_mux_update_power(widget, kcontrol, change, mux, e);
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update.kcontrol = kcontrol;
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update.widget = widget;
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update.reg = e->reg;
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update.mask = mask;
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update.val = val;
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widget->dapm->update = &update;
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widget->dapm->update = NULL;
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dapm_mux_update_power(widget, kcontrol, change, mux, e);
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mutex_unlock(&widget->codec->mutex);
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widget->dapm->update = NULL;
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}
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}
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mutex_unlock(&codec->mutex);
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return change;
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}
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EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
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@ -1995,7 +2047,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
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int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
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struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
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struct snd_soc_dapm_widget *widget = wlist->widgets[0];
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ucontrol->value.enumerated.item[0] = widget->value;
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@ -2013,22 +2066,33 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt);
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int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
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struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
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struct snd_soc_dapm_widget *widget = wlist->widgets[0];
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struct snd_soc_codec *codec = widget->codec;
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struct soc_enum *e =
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(struct soc_enum *)kcontrol->private_value;
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int change;
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int ret = 0;
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int wi;
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if (ucontrol->value.enumerated.item[0] >= e->max)
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return -EINVAL;
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mutex_lock(&widget->codec->mutex);
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mutex_lock(&codec->mutex);
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change = widget->value != ucontrol->value.enumerated.item[0];
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widget->value = ucontrol->value.enumerated.item[0];
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dapm_mux_update_power(widget, kcontrol, change, widget->value, e);
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if (change) {
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for (wi = 0; wi < wlist->num_widgets; wi++) {
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widget = wlist->widgets[wi];
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mutex_unlock(&widget->codec->mutex);
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widget->value = ucontrol->value.enumerated.item[0];
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dapm_mux_update_power(widget, kcontrol, change,
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widget->value, e);
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}
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}
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mutex_unlock(&codec->mutex);
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return ret;
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}
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EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt);
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@ -2049,7 +2113,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt);
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int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
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struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
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struct snd_soc_dapm_widget *widget = wlist->widgets[0];
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struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
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unsigned int reg_val, val, mux;
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@ -2089,11 +2154,14 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double);
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int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
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struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
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struct snd_soc_dapm_widget *widget = wlist->widgets[0];
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struct snd_soc_codec *codec = widget->codec;
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struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
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unsigned int val, mux, change;
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unsigned int mask;
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struct snd_soc_dapm_update update;
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int wi;
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if (ucontrol->value.enumerated.item[0] > e->max - 1)
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return -EINVAL;
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@ -2107,22 +2175,29 @@ int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol,
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mask |= e->mask << e->shift_r;
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}
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mutex_lock(&widget->codec->mutex);
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widget->value = val;
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mutex_lock(&codec->mutex);
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change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
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if (change) {
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for (wi = 0; wi < wlist->num_widgets; wi++) {
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widget = wlist->widgets[wi];
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update.kcontrol = kcontrol;
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update.widget = widget;
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update.reg = e->reg;
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update.mask = mask;
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update.val = val;
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widget->dapm->update = &update;
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widget->value = val;
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dapm_mux_update_power(widget, kcontrol, change, mux, e);
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update.kcontrol = kcontrol;
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update.widget = widget;
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update.reg = e->reg;
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update.mask = mask;
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update.val = val;
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widget->dapm->update = &update;
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widget->dapm->update = NULL;
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dapm_mux_update_power(widget, kcontrol, change, mux, e);
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mutex_unlock(&widget->codec->mutex);
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widget->dapm->update = NULL;
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}
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}
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mutex_unlock(&codec->mutex);
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return change;
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}
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EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double);
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