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ALSA: hda - Add api_version to hda_device_id struct

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For distinguishing the difference between HDA legacy and ext codec
driver entries, we need to expose the value corresponding to type
field.  This patch adds a new field, api_version, to hda_device_id
struct, so that this information is embedded in modalias string.

Although the information is basically redundant (struct hdac_device
already has type field), the helper that extracts from
MODULE_DEVICE_TABLE() won't take it account except for the exported
table entries themselves.  So we need to put the same information in
the table, too.

Reviewed-by: Vinod Koul <[email protected]>
Tested-by: Subhransu S Prusty <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>
This commit is contained in:
Takashi Iwai 2015-10-15 21:35:53 +02:00
commit 93ed8560e9
1 changed files with 1 additions and 0 deletions
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1
include/sound/hdaudio.h
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@ -33,6 +33,7 @@ extern struct bus_type snd_hda_bus_type;
struct hda_device_id {
__u32 vendor_id;
__u32 rev_id;
__u8 api_version;
const char *name;
unsigned long driver_data;
};