diff options
author | Mark Brown | 2013-04-12 13:57:02 +0100 |
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committer | Mark Brown | 2013-04-12 13:57:02 +0100 |
commit | 7b451962c71266fa3fef4f33a49f0c35195f712a (patch) | |
tree | 83c2b6f0a27dc6939dc6a35bf0c134e1e71d5f95 /sound/soc/soc-dapm.c | |
parent | 69976189c3a834b2c250c7829aa34719eb0f5994 (diff) | |
parent | 1059ecfa0f1eb38eba592b2f939499504013b6d5 (diff) |
Merge remote-tracking branch 'asoc/topic/dapm' into asoc-next
Diffstat (limited to 'sound/soc/soc-dapm.c')
-rw-r--r-- | sound/soc/soc-dapm.c | 319 |
1 files changed, 171 insertions, 148 deletions
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 33acd8b892dc..21779a6a781a 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -504,17 +504,27 @@ static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm, return 0; } -/* create new dapm mixer control */ -static int dapm_new_mixer(struct snd_soc_dapm_widget *w) +/* + * Determine if a kcontrol is shared. If it is, look it up. If it isn't, + * create it. Either way, add the widget into the control's widget list + */ +static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w, + int kci, struct snd_soc_dapm_path *path) { struct snd_soc_dapm_context *dapm = w->dapm; - int i, ret = 0; - size_t name_len, prefix_len; - struct snd_soc_dapm_path *path; struct snd_card *card = dapm->card->snd_card; const char *prefix; + size_t prefix_len; + int shared; + struct snd_kcontrol *kcontrol; struct snd_soc_dapm_widget_list *wlist; + int wlistentries; size_t wlistsize; + bool wname_in_long_name, kcname_in_long_name; + size_t name_len; + char *long_name; + const char *name; + int ret; if (dapm->codec) prefix = dapm->codec->name_prefix; @@ -526,103 +536,141 @@ static int dapm_new_mixer(struct snd_soc_dapm_widget *w) else prefix_len = 0; - /* add kcontrol */ - for (i = 0; i < w->num_kcontrols; i++) { + shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci], + &kcontrol); - /* match name */ - list_for_each_entry(path, &w->sources, list_sink) { + if (kcontrol) { + wlist = kcontrol->private_data; + wlistentries = wlist->num_widgets + 1; + } else { + wlist = NULL; + wlistentries = 1; + } - /* mixer/mux paths name must match control name */ - if (path->name != (char *)w->kcontrol_news[i].name) - continue; + wlistsize = sizeof(struct snd_soc_dapm_widget_list) + + wlistentries * sizeof(struct snd_soc_dapm_widget *); + wlist = krealloc(wlist, 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 = wlistentries; + wlist->widgets[wlistentries - 1] = w; - if (w->kcontrols[i]) { - path->kcontrol = w->kcontrols[i]; - continue; + if (!kcontrol) { + if (shared) { + wname_in_long_name = false; + kcname_in_long_name = true; + } else { + switch (w->id) { + case snd_soc_dapm_switch: + case snd_soc_dapm_mixer: + wname_in_long_name = true; + kcname_in_long_name = true; + break; + case snd_soc_dapm_mixer_named_ctl: + wname_in_long_name = false; + kcname_in_long_name = true; + break; + case snd_soc_dapm_mux: + case snd_soc_dapm_virt_mux: + case snd_soc_dapm_value_mux: + wname_in_long_name = true; + kcname_in_long_name = false; + break; + default: + kfree(wlist); + return -EINVAL; } + } + + if (wname_in_long_name && kcname_in_long_name) { + name_len = strlen(w->name) - prefix_len + 1 + + strlen(w->kcontrol_news[kci].name) + 1; - 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); + long_name = kmalloc(name_len, GFP_KERNEL); + if (long_name == NULL) { + kfree(wlist); 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. - * for dapm_mixer_named_ctl this is simply the - * kcontrol name. + + /* + * The control will get a prefix from the control + * creation process but we're also using the same + * prefix for widgets so cut the prefix off the + * front of the widget name. */ - name_len = strlen(w->kcontrol_news[i].name) + 1; - if (w->id != snd_soc_dapm_mixer_named_ctl) - name_len += 1 + strlen(w->name); + snprintf(long_name, name_len, "%s %s", + w->name + prefix_len, + w->kcontrol_news[kci].name); + long_name[name_len - 1] = '\0'; + + name = long_name; + } else if (wname_in_long_name) { + long_name = NULL; + name = w->name + prefix_len; + } else { + long_name = NULL; + name = w->kcontrol_news[kci].name; + } - path->long_name = kmalloc(name_len, GFP_KERNEL); + kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], wlist, name, + prefix); + ret = snd_ctl_add(card, kcontrol); + if (ret < 0) { + dev_err(dapm->dev, + "ASoC: failed to add widget %s dapm kcontrol %s: %d\n", + w->name, name, ret); + kfree(wlist); + kfree(long_name); + return ret; + } - if (path->long_name == NULL) { - kfree(wlist); - return -ENOMEM; - } + path->long_name = long_name; + } - switch (w->id) { - default: - /* The control will get a prefix from - * the control creation process but - * we're also using the same prefix - * for widgets so cut the prefix off - * the front of the widget name. - */ - 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((char *)path->long_name, name_len, - "%s", w->kcontrol_news[i].name); - break; - } + kcontrol->private_data = wlist; + w->kcontrols[kci] = kcontrol; + path->kcontrol = kcontrol; - ((char *)path->long_name)[name_len - 1] = '\0'; + return 0; +} - 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 widget" - " %s dapm kcontrol %s: %d\n", - w->name, path->long_name, ret); - kfree(wlist); - kfree(path->long_name); - path->long_name = NULL; - return ret; +/* create new dapm mixer control */ +static int dapm_new_mixer(struct snd_soc_dapm_widget *w) +{ + int i, ret; + struct snd_soc_dapm_path *path; + + /* add kcontrol */ + for (i = 0; i < w->num_kcontrols; i++) { + /* match name */ + list_for_each_entry(path, &w->sources, list_sink) { + /* mixer/mux paths name must match control name */ + if (path->name != (char *)w->kcontrol_news[i].name) + continue; + + if (w->kcontrols[i]) { + path->kcontrol = w->kcontrols[i]; + continue; } - w->kcontrols[i] = path->kcontrol; + + ret = dapm_create_or_share_mixmux_kcontrol(w, i, path); + if (ret < 0) + return ret; } } - return ret; + + return 0; } /* create new dapm mux control */ static int dapm_new_mux(struct snd_soc_dapm_widget *w) { struct snd_soc_dapm_context *dapm = w->dapm; - struct snd_soc_dapm_path *path = NULL; - struct snd_kcontrol *kcontrol; - struct snd_card *card = dapm->card->snd_card; - const char *prefix; - size_t prefix_len; + struct snd_soc_dapm_path *path; int ret; - struct snd_soc_dapm_widget_list *wlist; - int shared, wlistentries; - size_t wlistsize; - const char *name; if (w->num_kcontrols != 1) { dev_err(dapm->dev, @@ -631,65 +679,19 @@ static int dapm_new_mux(struct snd_soc_dapm_widget *w) return -EINVAL; } - shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[0], - &kcontrol); - if (kcontrol) { - wlist = kcontrol->private_data; - wlistentries = wlist->num_widgets + 1; - } else { - wlist = NULL; - wlistentries = 1; - } - wlistsize = sizeof(struct snd_soc_dapm_widget_list) + - wlistentries * sizeof(struct snd_soc_dapm_widget *), - wlist = krealloc(wlist, 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 = wlistentries; - wlist->widgets[wlistentries - 1] = w; - - if (!kcontrol) { - if (dapm->codec) - prefix = dapm->codec->name_prefix; - else - prefix = NULL; - - if (shared) { - name = w->kcontrol_news[0].name; - prefix_len = 0; - } else { - name = w->name; - if (prefix) - prefix_len = strlen(prefix) + 1; - else - prefix_len = 0; - } - - /* - * The control will get a prefix from the control creation - * 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], wlist, - name + prefix_len, prefix); - ret = snd_ctl_add(card, kcontrol); - if (ret < 0) { - dev_err(dapm->dev, "ASoC: failed to add kcontrol %s: %d\n", - w->name, ret); - kfree(wlist); - return ret; - } + path = list_first_entry(&w->sources, struct snd_soc_dapm_path, + list_sink); + if (!path) { + dev_err(dapm->dev, "ASoC: mux %s has no paths\n", w->name); + return -EINVAL; } - kcontrol->private_data = wlist; - - w->kcontrols[0] = kcontrol; + ret = dapm_create_or_share_mixmux_kcontrol(w, 0, path); + if (ret < 0) + return ret; list_for_each_entry(path, &w->sources, list_sink) - path->kcontrol = kcontrol; + path->kcontrol = w->kcontrols[0]; return 0; } @@ -705,14 +707,33 @@ static int dapm_new_pga(struct snd_soc_dapm_widget *w) } /* reset 'walked' bit for each dapm path */ -static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) +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, &dapm->card->paths, list) - p->walked = 0; + 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. @@ -995,13 +1016,17 @@ int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream, mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); dapm_reset(card); - if (stream == SNDRV_PCM_STREAM_PLAYBACK) + if (stream == SNDRV_PCM_STREAM_PLAYBACK) { paths = is_connected_output_ep(dai->playback_widget, list); - else + dapm_clear_walk_output(&card->dapm, + &dai->playback_widget->sinks); + } 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); - dapm_clear_walk(&card->dapm); mutex_unlock(&card->dapm_mutex); return paths; @@ -1104,9 +1129,9 @@ 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(w->dapm); + dapm_clear_walk_input(w->dapm, &w->sources); out = is_connected_output_ep(w, NULL); - dapm_clear_walk(w->dapm); + dapm_clear_walk_output(w->dapm, &w->sinks); return out != 0 && in != 0; } @@ -1129,7 +1154,7 @@ static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) if (w->active) { in = is_connected_input_ep(w, NULL); - dapm_clear_walk(w->dapm); + dapm_clear_walk_input(w->dapm, &w->sources); return in != 0; } else { return dapm_generic_check_power(w); @@ -1145,7 +1170,7 @@ static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) if (w->active) { out = is_connected_output_ep(w, NULL); - dapm_clear_walk(w->dapm); + dapm_clear_walk_output(w->dapm, &w->sinks); return out != 0; } else { return dapm_generic_check_power(w); @@ -1177,8 +1202,6 @@ static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) return 1; } - dapm_clear_walk(w->dapm); - return 0; } @@ -1759,9 +1782,9 @@ static ssize_t dapm_widget_power_read_file(struct file *file, return -ENOMEM; in = is_connected_input_ep(w, NULL); - dapm_clear_walk(w->dapm); + dapm_clear_walk_input(w->dapm, &w->sources); out = is_connected_output_ep(w, NULL); - dapm_clear_walk(w->dapm); + dapm_clear_walk_output(w->dapm, &w->sinks); ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d", w->name, w->power ? "On" : "Off", |