ucm: handle 'set _defaults' command

Signed-off-by: Jaroslav Kysela <perex@perex.cz>

diff --git a/include/use-case.h b/include/use-case.h
index a609808..b523060 100644 (file)
--- a/include/use-case.h
+++ b/include/use-case.h
@@ -414,6 +414,7 @@ int snd_use_case_geti(snd_use_case_mgr_t *uc_mgr,
  *
  * Known identifiers:
  *   - _once                   - execute the once sequence (value = NULL)
+ *   - _defaults               - execute the 'defaults' sequence (value = NULL)
  *   - _verb                   - set current verb = value
  *   - _enadev                 - enable given device = value
  *   - _disdev                 - disable given device = value

diff --git a/src/ucm/main.c b/src/ucm/main.c
index 053aa79..71ad4ec 100644 (file)
--- a/src/ucm/main.c
+++ b/src/ucm/main.c
@@ -531,6 +531,27 @@ static int add_auto_values(snd_use_case_mgr_t *uc_mgr)
 }
 
 /**
+ * \brief execute default commands
+ * \param uc_mgr Use case manager
+ * \return zero on success, otherwise a negative error code
+ */
+static int set_defaults(snd_use_case_mgr_t *uc_mgr)
+{
+       int err;
+
+       if (uc_mgr->default_list_executed)
+               return 0;
+       err = execute_sequence(uc_mgr, &uc_mgr->default_list,
+                              &uc_mgr->value_list, NULL, NULL);
+       if (err < 0) {
+               uc_error("Unable to execute default sequence");
+               return err;
+       }
+       uc_mgr->default_list_executed = 1;
+       return 0;
+}
+
+/**
  * \brief Import master config and execute the default sequence
  * \param uc_mgr Use case manager
  * \return zero on success, otherwise a negative error code
@@ -838,15 +859,9 @@ static int set_verb(snd_use_case_mgr_t *uc_mgr,
        int err;
 
        if (enable) {
-               if (!uc_mgr->default_list_executed) {
-                       err = execute_sequence(uc_mgr, &uc_mgr->default_list,
-                                               &uc_mgr->value_list, NULL, NULL);
-                       if (err < 0) {
-                               uc_error("Unable to execute default sequence");
-                               return err;
-                       }
-                       uc_mgr->default_list_executed = 1;
-               }
+               err = set_defaults(uc_mgr);
+               if (err < 0)
+                       return err;
                seq = &verb->enable_list;
        } else {
                seq = &verb->disable_list;
@@ -1848,6 +1863,18 @@ static int set_once_user(snd_use_case_mgr_t *uc_mgr,
        return err;
 }
 
+static int set_defaults_user(snd_use_case_mgr_t *uc_mgr,
+                            const char *value)
+{
+       int err;
+
+       if (value != NULL && *value) {
+               uc_error("error: wrong value for _defaults (%s)", value);
+               return -EINVAL;
+       }
+       return set_defaults(uc_mgr);
+}
+
 static int handle_transition_verb(snd_use_case_mgr_t *uc_mgr,
                                   struct use_case_verb *new_verb)
 {
@@ -2061,6 +2088,8 @@ int snd_use_case_set(snd_use_case_mgr_t *uc_mgr,
        pthread_mutex_lock(&uc_mgr->mutex);
        if (strcmp(identifier, "_once") == 0)
                err = set_once_user(uc_mgr, value);
+       else if (strcmp(identifier, "_defaults") == 0)
+               err = set_defaults_user(uc_mgr, value);
        else if (strcmp(identifier, "_verb") == 0)
                err = set_verb_user(uc_mgr, value);
         else if (strcmp(identifier, "_enadev") == 0)