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UCM: Allow querying of {Supported,Conflicting}Devices

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At any time, one can query:

_supporteddevs/<modifier>|<device>/<verb>
_conflictingdevs/<modifier>|<device>/<verb>

If a verb is current, one can query:

_supporteddevs/<modifier>|<device>
_conflictingdevs/<modifier>|<device>

Note that at most one of the supported/conflicting devs lists has
any entries, and when neither is present, all devices are supported.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Stephen Warren 2011-06-03 14:56:33 -06:00 • committed by Takashi Iwai
parent 547300fb35
commit 32d24f4071
2 changed files with 97 additions and 14 deletions
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5
include/use-case.h
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@ -205,6 +205,11 @@ int snd_use_case_free_list(const char *list[], int items);
* _enadevs - get list of enabled devices
* _enamods - get list of enabled modifiers
*
* _supporteddevs/<modifier>|<device>[/<verb>] - list of supported devices
* _conflictingdevs/<modifier>|<device>[/<verb>] - list of conflicting devices
* Note that at most one of the supported/conflicting devs lists has
* any entries, and when neither is present, all devices are supported.
*
*/
int snd_use_case_get_list(snd_use_case_mgr_t *uc_mgr,
const char *identifier,