From c8a4556d98510ca05bad8d02265a4918b03a8c0b Mon Sep 17 00:00:00 2001 From: Srinivasa Rao Mandadapu Date: Fri, 4 Jun 2021 23:45:45 +0800 Subject: ASoC: qcom: lpass-cpu: Fix pop noise during audio capture begin This patch fixes PoP noise of around 15ms observed during audio capture begin. Enables BCLK and LRCLK in snd_soc_dai_ops prepare call for introducing some delay before capture start. (am from https://patchwork.kernel.org/patch/12276369/) (also found at https://lore.kernel.org/r/20210524142114.18676-1-srivasam@codeaurora.org) Co-developed-by: Judy Hsiao Signed-off-by: Judy Hsiao Signed-off-by: Srinivasa Rao Mandadapu Reviewed-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20210604154545.1198337-1-judyhsiao@chromium.org Signed-off-by: Mark Brown --- sound/soc/qcom/lpass.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'sound/soc/qcom/lpass.h') diff --git a/sound/soc/qcom/lpass.h b/sound/soc/qcom/lpass.h index 83b2e08ade06..7f72214404ba 100644 --- a/sound/soc/qcom/lpass.h +++ b/sound/soc/qcom/lpass.h @@ -67,6 +67,10 @@ struct lpass_data { /* MI2S SD lines to use for playback/capture */ unsigned int mi2s_playback_sd_mode[LPASS_MAX_MI2S_PORTS]; unsigned int mi2s_capture_sd_mode[LPASS_MAX_MI2S_PORTS]; + + /* The state of MI2S prepare dai_ops was called */ + bool mi2s_was_prepared[LPASS_MAX_MI2S_PORTS]; + int hdmi_port_enable; /* low-power audio interface (LPAIF) registers */ -- cgit v1.2.3