From 718a42b5eaddb3180e2589590732d61e047858fb Mon Sep 17 00:00:00 2001
From: "Dharageswari.R" <dharageswari.r@intel.com>
Date: Fri, 5 Feb 2016 12:19:06 +0530
Subject: [PATCH] ASoC: Intel: Skylake: Add skl_tplg_be_get_cpr_module() helper

An I2S port can be connected to multiple BE pipes, get module config
only for the active BE pipe.

This helpers helps to do that and is used in subsequent patches

Signed-off-by: Dharageswari R <dharageswari.r@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/intel/skylake/skl-topology.c | 60 ++++++++++++++++++++++++++
 sound/soc/intel/skylake/skl-topology.h |  2 +
 2 files changed, 62 insertions(+)

diff --git a/sound/soc/intel/skylake/skl-topology.c b/sound/soc/intel/skylake/skl-topology.c
index a294fee431f0..5c8661450349 100644
--- a/sound/soc/intel/skylake/skl-topology.c
+++ b/sound/soc/intel/skylake/skl-topology.c
@@ -1091,6 +1091,66 @@ skl_tplg_fe_get_cpr_module(struct snd_soc_dai *dai, int stream)
 	return NULL;
 }
 
+static struct skl_module_cfg *skl_get_mconfig_pb_cpr(
+		struct snd_soc_dai *dai, struct snd_soc_dapm_widget *w)
+{
+	struct snd_soc_dapm_path *p;
+	struct skl_module_cfg *mconfig = NULL;
+
+	snd_soc_dapm_widget_for_each_source_path(w, p) {
+		if (w->endpoints[SND_SOC_DAPM_DIR_OUT] > 0) {
+			if (p->connect &&
+				    (p->sink->id == snd_soc_dapm_aif_out) &&
+				    p->source->priv) {
+				mconfig = p->source->priv;
+				return mconfig;
+			}
+			mconfig = skl_get_mconfig_pb_cpr(dai, p->source);
+			if (mconfig)
+				return mconfig;
+		}
+	}
+	return mconfig;
+}
+
+static struct skl_module_cfg *skl_get_mconfig_cap_cpr(
+		struct snd_soc_dai *dai, struct snd_soc_dapm_widget *w)
+{
+	struct snd_soc_dapm_path *p;
+	struct skl_module_cfg *mconfig = NULL;
+
+	snd_soc_dapm_widget_for_each_sink_path(w, p) {
+		if (w->endpoints[SND_SOC_DAPM_DIR_IN] > 0) {
+			if (p->connect &&
+				    (p->source->id == snd_soc_dapm_aif_in) &&
+				    p->sink->priv) {
+				mconfig = p->sink->priv;
+				return mconfig;
+			}
+			mconfig = skl_get_mconfig_cap_cpr(dai, p->sink);
+			if (mconfig)
+				return mconfig;
+		}
+	}
+	return mconfig;
+}
+
+struct skl_module_cfg *
+skl_tplg_be_get_cpr_module(struct snd_soc_dai *dai, int stream)
+{
+	struct snd_soc_dapm_widget *w;
+	struct skl_module_cfg *mconfig;
+
+	if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		w = dai->playback_widget;
+		mconfig = skl_get_mconfig_pb_cpr(dai, w);
+	} else {
+		w = dai->capture_widget;
+		mconfig = skl_get_mconfig_cap_cpr(dai, w);
+	}
+	return mconfig;
+}
+
 static u8 skl_tplg_be_link_type(int dev_type)
 {
 	int ret;
diff --git a/sound/soc/intel/skylake/skl-topology.h b/sound/soc/intel/skylake/skl-topology.h
index 9aa2a2b6598a..5f0707cf1f54 100644
--- a/sound/soc/intel/skylake/skl-topology.h
+++ b/sound/soc/intel/skylake/skl-topology.h
@@ -345,5 +345,7 @@ int skl_set_module_params(struct skl_sst *ctx, u32 *params, int size,
 int skl_get_module_params(struct skl_sst *ctx, u32 *params, int size,
 			  u32 param_id, struct skl_module_cfg *mcfg);
 
+struct skl_module_cfg *skl_tplg_be_get_cpr_module(struct snd_soc_dai *dai,
+								int stream);
 enum skl_bitdepth skl_get_bit_depth(int params);
 #endif
-- 
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