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authorSeppo Ingalsuo <seppo.ingalsuo@linux.intel.com>2019-06-12 12:01:47 -0500
committerMark Brown <broonie@kernel.org>2019-06-13 19:55:44 +0100
commit7df43911e92aa2137ae77ae60efaa9d6656df3fe (patch)
tree5d5bd8a1306934528d7d3f43b17658098f5800dd /include/sound/sof
parent65a18a46b274e64012fcf19d79ac62c8fb2a12e9 (diff)
ASoC: SOF: Add DMIC token for unmute gain ramp time
The settling time of DMIC DC level is both platform and used microphone model specific. The unmute gain ramp is used to conceal most of the large DC level seen in beginning of capture. This patch adds into the DMIC DAI IPC struct a new field called unmute_ramp_time and a new token SOF_TKN_INTEL_DMIC_UNMUTE_RAMP_TIME. The value is the ramp length in milliseconds (ms). The ABI minor version is incremented for this backwards compatible change. Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound/sof')
-rw-r--r--include/sound/sof/dai-intel.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/sound/sof/dai-intel.h b/include/sound/sof/dai-intel.h
index 4bd83f7adddf..4bb8ee138ba7 100644
--- a/include/sound/sof/dai-intel.h
+++ b/include/sound/sof/dai-intel.h
@@ -167,9 +167,10 @@ struct sof_ipc_dai_dmic_params {
uint32_t wake_up_time; /**< Time from clock start to data (us) */
uint32_t min_clock_on_time; /**< Min. time that clk is kept on (us) */
+ uint32_t unmute_ramp_time; /**< Length of logarithmic gain ramp (ms) */
/* reserved for future use */
- uint32_t reserved[6];
+ uint32_t reserved[5];
/**< variable number of pdm controller config */
struct sof_ipc_dai_dmic_pdm_ctrl pdm[0];