From: YC Hung yc.hung@mediatek.com

The host stream position is updated when no_stream_position is set as 0. However current implementation updates host stream position only when report data is larger than or equal to host period size which is decided by the period size of host side. It maybe cause host stream position update not in time. Therefore this patch introduces another field "cont_update_posn", a boolean value aimed to update host stream position continuously and based on period size of pipeline. It can get better precise when need to update host stream position from firmware.

Reviewed-by: Daniel Baluta daniel.baluta@nxp.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Reviewed-by: Kai Vehmanen kai.vehmanen@linux.intel.com Signed-off-by: YC Hung yc.hung@mediatek.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- include/sound/sof/stream.h | 3 ++- include/uapi/sound/sof/abi.h | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/include/sound/sof/stream.h b/include/sound/sof/stream.h index 58a0d49977d63..1db3bbc3e65d4 100644 --- a/include/sound/sof/stream.h +++ b/include/sound/sof/stream.h @@ -85,8 +85,9 @@ struct sof_ipc_stream_params {

uint32_t host_period_bytes; uint16_t no_stream_position; /**< 1 means don't send stream position */ + uint8_t cont_update_posn; /**< 1 means continuous update stream position */

- uint16_t reserved[3]; + uint8_t reserved[5]; uint16_t chmap[SOF_IPC_MAX_CHANNELS]; /**< channel map - SOF_CHMAP_ */ } __packed;

diff --git a/include/uapi/sound/sof/abi.h b/include/uapi/sound/sof/abi.h index b87e46684623b..0e7dccdc25fdd 100644 --- a/include/uapi/sound/sof/abi.h +++ b/include/uapi/sound/sof/abi.h @@ -26,7 +26,7 @@

/* SOF ABI version major, minor and patch numbers */ #define SOF_ABI_MAJOR 3 -#define SOF_ABI_MINOR 20 +#define SOF_ABI_MINOR 21 #define SOF_ABI_PATCH 0

/* SOF ABI version number. Format within 32bit word is MMmmmppp */