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ucm: Add command 'get _file' to get the config file name of the opened card

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After opening a card, this command can show the name of the actually
loaded configuration file, either matches the card name or card long name.
So developers can check if there is a device-sepcific configuration file
available for a given card.

Signed-off-by: Mengdong Lin <mengdong.lin@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Mengdong Lin 2017-01-18 11:53:42 +08:00 • committed by Takashi Iwai
parent 4b9297e65f
commit e93d93a8cd
2 changed files with 15 additions and 0 deletions
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1
include/use-case.h
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@ -230,6 +230,7 @@ int snd_use_case_get_list(snd_use_case_mgr_t *uc_mgr,
* Known identifiers:
* - NULL - return current card
* - _verb - return current verb
* - _file - return configuration file loaded for current card
*
* - [=]{NAME}[/[{modifier}|{/device}][/{verb}]]
* - value identifier {NAME}

14
src/ucm/main.c
View file

@ -1528,6 +1528,20 @@ int snd_use_case_get(snd_use_case_mgr_t *uc_mgr,
goto __end;
}
err = 0;
} else if (strcmp(identifier, "_file") == 0) {
/* get the conf file name of the opened card */
if ((uc_mgr->card_name == NULL)
|| (uc_mgr->conf_file_name[0] == '\0')) {
err = -ENOENT;
goto __end;
}
*value = strndup(uc_mgr->conf_file_name, MAX_FILE);
if (*value == NULL) {
err = -ENOMEM;
goto __end;
}
err = 0;
} else if (identifier[0] == '_') {
err = -ENOENT;
goto __end;