topology: Add simple playback passthrough pipeline with volume.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>

topology/sof/pipe-passthrough-vol-playback.m4

@@ -0,0 +1,93 @@
+# Low Latency Passthrough with volume Pipeline and PCM
+#
+# Pipeline Endpoints for connection are :-
+#
+#  host PCM_P --> B0 --> Volume 0 --> B1 --> sink DAI0
+
+# Include topology builder
+include(`local.m4')
+
+
+#
+# Components and Buffers
+#
+
+# Host "Passthrough Playback" PCM uses pipeline DMAC and channel
+# with 2 sink and 0 source periods
+W_PCM_PLAYBACK(Passthrough Playback, PIPELINE_DMAC, PIPELINE_DMAC_CHAN, 2, 0, 2)
+
+# "Volume" has 2 source and 2 sink periods
+W_PGA(Volume, PIPELINE_FORMAT, 2, 2, 2)
+
+# Playback Buffers
+W_BUFFER(0, COMP_BUFFER_SIZE(2,
+	COMP_SAMPLE_SIZE(PIPELINE_FORMAT), PIPELINE_CHANNELS, SCHEDULE_FRAMES))
+W_BUFFER(1, COMP_BUFFER_SIZE(2,
+	COMP_SAMPLE_SIZE(PIPELINE_FORMAT), PIPELINE_CHANNELS, SCHEDULE_FRAMES))
+
+#
+# DAI definitions
+#
+W_DAI_OUT(DAI_SNAME, DAI_TYPE, DAI_INDEX, DAI_FORMAT, 0, DAI_PERIODS,
+	DAI_PERIODS, dai0p_plat_conf)
+
+#
+# DAI pipeline - always use 0 for DAIs
+#
+W_PIPELINE(N_DAI_OUT, SCHEDULE_DEADLINE, SCHEDULE_PRIORITY, SCHEDULE_FRAMES,
+	SCHEDULE_CORE, pipe_dai_schedule_plat)
+
+#
+# Pipeline Graph
+#
+#  host PCM_P --> B0 --> Volume 0 --> B1 --> sink DAI0
+
+SectionGraph."pipe-pass-vol-playback-PIPELINE_ID" {
+	index STR(PIPELINE_ID)
+
+	lines [
+		dapm(N_PCM, Passthrough Playback PCM_ID)
+		dapm(N_BUFFER(0), N_PCM)
+		dapm(N_PGA(Volume), N_BUFFER(0))
+		dapm(N_BUFFER(1), N_PGA(Volume))
+		dapm(N_DAI_OUT, N_BUFFER(1))
+	]
+}
+
+
+#
+# PCM Configuration
+#
+
+SectionPCMCapabilities.STR(Passthrough Playback PCM_ID) {
+
+	formats "S24_LE,S16_LE"
+	rate_min "48000"
+	rate_max "48000"
+	channels_min "2"
+	channels_max "4"
+	periods_min "2"
+	periods_max "16"
+	period_size_min	"192"
+	period_size_max	"16384"
+	buffer_size_min	"65536"
+	buffer_size_max	"65536"
+}
+
+# PCM Passthrough Playback
+SectionPCM.STR(PCM PCM_ID) {
+
+	index STR(PIPELINE_ID)
+
+	# used for binding to the PCM
+	id STR(PCM_ID)
+
+	dai.STR(Passthrough Playback PCM_ID) {
+		id STR(PCM_ID)
+	}
+
+	pcm."playback" {
+
+		capabilities STR(Passthrough Playback PCM_ID)
+	}
+}