[Sound-open-firmware] [PATCH 3/3] topology: test: Add loopback topology

[Xiuli Pan]

From: Pan Xiuli <xiuli.pan at linux.intel.com>

Loopback topology will enable SSP DAI loopback mode. This can loopback
the SSP data.

Signed-off-by: Pan Xiuli <xiuli.pan at linux.intel.com>
---
Work with patch set:
SOF-Kernel(6):
  ASoC: SOF: Add debug_mode flag in sof dev
  ASoC: SOF: debug: add debugmode debugfs for sof_dev debug_mode
  ASoC: SOF: uapi: topology: Add SOF_TKN_DAI_SSP_LBM for ssp loopback mode
  ASoC: SOF: add headers for lbm control callback functions
  ASoC: SOF: add lbm kcontrol callback functions
  ASoC: SOF: topology: Add topology handler for dai ssp loopback mode

SOF(5):
  dai: add lbm status for dai ssp
  dai: add get_loopback_mode function
  DMIC: add empty get_loopback_mode function
  SSP: support for get/set_loopback_mode functions
  dai: add dai_cmd support for loopback mode switch

SOF-Tools(3):
  topology: Add SOF_TKN_DAI_SSP_LBM for ssp loopback mode
  topology: m4: Add DAI_OUT_SSP_LOOPBACK marco for SSP LOOPBACK dai comp
  topology: test: Add loopback topology

test & santity test with:
Mininow max rt5651 and UP2 Hifiberry PRO and CNL nocodec
SOF master: 48d2a1c551d7b3c8f76d44f3c04dd59a37ff6a8f
SOF-Tool master: bd7dc88231f31d385340310cef467f211a739eeb
https://github.com/plbossart/sound/tree/topic/sof-v4.14:
0d51a5ed28c5e97f09b59c4cafaddfb9d3b24b77
---
 topology/sof/pipe-dai-loopback.m4 | 22 +++++++++
 topology/test/test-loopback.m4    | 96 +++++++++++++++++++++++++++++++++++++++
 topology/test/tplg-build.sh       |  2 +-
 3 files changed, 119 insertions(+), 1 deletion(-)
 create mode 100644 topology/sof/pipe-dai-loopback.m4
 create mode 100644 topology/test/test-loopback.m4

diff --git a/topology/sof/pipe-dai-loopback.m4 b/topology/sof/pipe-dai-loopback.m4
new file mode 100644
index 0000000..59d9af8
--- /dev/null
+++ b/topology/sof/pipe-dai-loopback.m4
@@ -0,0 +1,22 @@
+# DAI Playback connector
+
+# Include topology builder
+include(`utils.m4')
+include(`dai.m4')
+include(`pipeline.m4')
+
+#
+# DAI definitions
+#
+W_DAI_OUT_SSP_LOOPBACK(DAI_TYPE, DAI_INDEX, DAI_BE, DAI_FORMAT, 0, 2, 2)
+
+#
+# DAI pipeline - always use 0 for DAIs
+#
+W_PIPELINE(N_DAI_OUT, SCHEDULE_DEADLINE, SCHEDULE_PRIORITY, SCHEDULE_FRAMES, SCHEDULE_CORE, 0, pipe_dai_schedule_plat)
+
+#
+# Graph connections to pipelines
+
+P_GRAPH(DAI_NAME, PIPELINE_ID,
+	LIST(`		', `dapm(N_DAI_OUT, DAI_BUF)'))
diff --git a/topology/test/test-loopback.m4 b/topology/test/test-loopback.m4
new file mode 100644
index 0000000..bc5e0ec
--- /dev/null
+++ b/topology/test/test-loopback.m4
@@ -0,0 +1,96 @@
+#
+# Topology for pass through pipeline
+#
+
+# Include topology builder
+include(`dai.m4')
+include(`utils.m4')
+include(`pipeline.m4')
+
+# Include TLV library
+include(`common/tlv.m4')
+
+# Include Token library
+include(`sof/tokens.m4')
+
+# Include Baytrail DSP configuration
+include(`dsps/byt.m4')
+
+#
+# Machine Specific Config - !! MUST BE SET TO MATCH TEST MACHINE DRIVER !!
+#
+# TEST_PIPE_NAME - Pipe name
+# TEST_DAI_LINK_NAME - BE DAI link name e.g. "NoCodec"
+# TEST_DAI_PORT	- SSP port number e.g. 2
+# TEST_DAI_FORMAT - SSP data format e.g s16le
+# TEST_PIPE_FORMAT - Pipeline format e.g. s16le
+# TEST_SSP_MCLK - SSP BCLK in Hz
+# TEST_SSP_BCLK - SSP BCLK in Hz
+# TEST_SSP_PHY_BITS - SSP physical slot size
+# TEST_SSP_DATA_BITS - SSP data slot size
+# TEST_SSP_MODE - SSP mode e.g. I2S, LEFT_J, DSP_A and DSP_B
+#
+
+#
+# Define the pipeline
+#
+# PCM0 <-- TEST_PIPE_NAME pipe --> SSP TEST_DAI_PORT
+#
+
+# Passthrough playback pipeline 1 on PCM 0 using max 2 channels of s24le.
+# Schedule 48 frames per 1000us deadline on core 0 with priority 0
+# Use DMAC 0 channel 1 for PCM audio playback data
+
+PIPELINE_PCM_DAI_ADD(sof/pipe-TEST_PIPE_NAME-playback.m4,
+	1, 0, 2, TEST_PIPE_FORMAT,
+	48, 1000, 0, 0, 0, 1,
+	TEST_DAI_TYPE, TEST_DAI_PORT, TEST_DAI_FORMAT, 2)
+
+
+# Passthrough playback pipeline 2 on PCM 0 using max 2 channels of s24le.
+# Schedule 48 frames per 1000us deadline on core 0 with priority 0
+# Use DMAC 0 channel 1 for PCM audio playback data
+
+PIPELINE_PCM_DAI_ADD(sof/pipe-TEST_PIPE_NAME-capture.m4,
+	2, 0, 2, TEST_PIPE_FORMAT,
+	48, 1000, 0, 0, 0, 1,
+	TEST_DAI_TYPE, TEST_DAI_PORT, TEST_DAI_FORMAT, 2)
+
+#
+# DAI configuration
+#
+# SSP port TEST_DAI_PORT is our only pipeline DAI
+#
+
+# playback DAI is SSP TEST_DAI_PORT using 2 periods
+# Buffers use s24le format, with 48 frame per 1000us on core 0 with priority 0
+DAI_ADD(sof/pipe-dai-loopback.m4,
+	1, TEST_DAI_TYPE, TEST_DAI_PORT, TEST_DAI_LINK_NAME,
+	PIPELINE_SOURCE_1, 2, TEST_DAI_FORMAT,
+	48, 1000, 0, 0)
+
+# capture DAI is SSP TEST_DAI_PORT using 2 periods
+# Buffers use s24le format, with 48 frame per 1000us on core 0 with priority 0
+DAI_ADD(sof/pipe-dai-capture.m4,
+	2, TEST_DAI_TYPE, TEST_DAI_PORT, TEST_DAI_LINK_NAME,
+	PIPELINE_SINK_2, 2, TEST_DAI_FORMAT,
+	48, 1000, 0, 0)
+
+# PCM Passthrough
+PCM_DUPLEX_ADD(Passthrough, 3, 0, 0, PIPELINE_PCM_1, PIPELINE_PCM_2)
+
+#
+# BE configurations - overrides config in ACPI if present
+#
+# Clocks masters wrt codec
+#
+# TEST_SSP_DATA_BITS bit I2S using TEST_SSP_PHY_BITS bit sample conatiner on SSP TEST_DAI_PORT
+#
+DAI_CONFIG(TEST_DAI_TYPE, TEST_DAI_PORT, 0, TEST_DAI_LINK_NAME,
+	   SSP_CONFIG(TEST_SSP_MODE,
+		      DAI_CLOCK(mclk, TEST_SSP_MCLK, codec_mclk_in),
+		      DAI_CLOCK(bclk, TEST_SSP_BCLK, codec_slave),
+		      DAI_CLOCK(fsync, 48000, codec_slave),
+		      DAI_TDM(2, TEST_SSP_PHY_BITS, 3, 3),
+		      SSP_SAMPLE_BITS(TEST_DAI_TYPE, TEST_DAI_PORT,
+				      TEST_SSP_DATA_BITS)))
diff --git a/topology/test/tplg-build.sh b/topology/test/tplg-build.sh
index 6721768..facbe17 100755
--- a/topology/test/tplg-build.sh
+++ b/topology/test/tplg-build.sh
@@ -12,7 +12,7 @@ export M4PATH="../:../m4:../common"
 
 # Simple component test cases
 # can be used on components with 1 sink and 1 source.
-SIMPLE_TESTS=(test-all test-capture test-playback)
+SIMPLE_TESTS=(test-all test-capture test-playback test-loopback)
 TONE_TEST=test-tone-playback
 DMIC_TEST=test-capture
 TEST_STRINGS=""
-- 
2.7.4