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ucm: only select modifier when supported device is enabled

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Make sure the supported device of a modifier is enabled before
we enable the modifier.

Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Liam Girdwood 2010-12-21 23:11:58 +01:00 • committed by Jaroslav Kysela
parent 265cf2c3ee
commit eba5471819
1 changed files with 44 additions and 10 deletions
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54
src/ucm/main.c
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@ -463,19 +463,52 @@ static inline struct use_case_device *
device_name);
}
static int is_modifier_supported(snd_use_case_mgr_t *uc_mgr,
struct use_case_modifier *modifier)
{
struct dev_list *device;
struct list_head *pos;
list_for_each(pos, &modifier->dev_list) {
device = list_entry(pos, struct dev_list, list);
if (find(&uc_mgr->active_devices,
struct use_case_device, active_list, name, device->name))
return 1;
}
return 0;
}
/**
* \brief Find modifier
* \param verb Use case verb
* \param modifier_name modifier to find
* \return structure on success, otherwise a NULL (not found)
*/
static inline struct use_case_modifier *
find_modifier(struct use_case_verb *verb,
const char *modifier_name)
static struct use_case_modifier *
find_modifier(snd_use_case_mgr_t *uc_mgr, const char *modifier_name)
{
return find(&verb->modifier_list,
struct use_case_modifier, list, name,
modifier_name);
struct use_case_modifier *modifier;
struct use_case_verb *verb = uc_mgr->active_verb;
struct list_head *pos;
char name[64], *cpos;
list_for_each(pos, &verb->modifier_list) {
modifier = list_entry(pos, struct use_case_modifier, list);
strncpy(name, modifier->name, sizeof(name));
cpos = strchr(name, '.');
if (!cpos)
continue;
*cpos= '\0';
if (strcmp(name, modifier_name))
continue;
if (is_modifier_supported(uc_mgr, modifier))
return modifier;
}
return NULL;
}
/**
@ -1011,7 +1044,7 @@ static int get_value(snd_use_case_mgr_t *uc_mgr,
int err;
if (modifier != NULL) {
mod = find_modifier(uc_mgr->active_verb, modifier);
mod = find_modifier(uc_mgr, modifier);
if (mod != NULL) {
err = get_value1(value, &mod->value_list, identifier);
if (err >= 0 || err != -ENOENT)
@ -1242,7 +1275,8 @@ static int set_modifier_user(snd_use_case_mgr_t *uc_mgr,
if (uc_mgr->active_verb == NULL)
return -ENOENT;
modifier = find_modifier(uc_mgr->active_verb, modifier_name);
modifier = find_modifier(uc_mgr, modifier_name);
if (modifier == NULL)
return -ENOENT;
return set_modifier(uc_mgr, modifier, enable);
@ -1319,10 +1353,10 @@ static int switch_modifier(snd_use_case_mgr_t *uc_mgr,
uc_error("error: modifier %s already enabled", new_modifier);
return -EINVAL;
}
xold = find_modifier(uc_mgr->active_verb, old_modifier);
xold = find_modifier(uc_mgr, old_modifier);
if (xold == NULL)
return -ENOENT;
xnew = find_modifier(uc_mgr->active_verb, new_modifier);
xnew = find_modifier(uc_mgr, new_modifier);
if (xnew == NULL)
return -ENOENT;
err = 0;