diff options
| author | Mark Greer <mgreer@animalcreek.com> | 2016-01-13 14:07:47 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@google.com> | 2016-01-13 16:02:04 -0800 |
| commit | 4dbf5056405ad3c0ead370f0f3254c17b81b1e04 (patch) | |
| tree | 52c45adf2a359ccc869ad866fc7365276e041575 /drivers/staging/greybus/greybus_protocols.h | |
| parent | 184992e305f1de3a3d5fa446da3a2bc76be7c54a (diff) | |
greybus: audio: Add direct audio streaming control for APBridgeA
The latest audio architecture does not stream audio data over the
USB link between the AP and APBridgeA. Instead, audio data is
streamed directly over the I2S link between the two.
To support the Greybus audio driver in setting up the I2S port and
controling packeting/depacketizing of audio data to/from Greybus
audio messages, define a set of commands and their parameters.
These commands and parameters will be placed into a request and sent
over the USB control channel to APBridgeA. A corresponding driver
on APBridgeA will receive and process the requests.
Signed-off-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'drivers/staging/greybus/greybus_protocols.h')
| -rw-r--r-- | drivers/staging/greybus/greybus_protocols.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/staging/greybus/greybus_protocols.h b/drivers/staging/greybus/greybus_protocols.h index 1277b74bc618..55e99b7083f3 100644 --- a/drivers/staging/greybus/greybus_protocols.h +++ b/drivers/staging/greybus/greybus_protocols.h @@ -175,6 +175,9 @@ struct gb_control_interface_version_response { /* request to control the CSI transmitter */ #define GB_APB_REQUEST_CSI_TX_CONTROL 0x08 +/* request to control the CSI transmitter */ +#define GB_APB_REQUEST_AUDIO_CONTROL 0x09 + /* Firmware Protocol */ |