ASoC: test-component: add Test Component for Sound debug/test

We already have dummy-codec, dummy-platform.
But its issues are
	1) we don't have dummy-cpu,
	2) we can't select it via DeviceTree
	3) It do nothing

Sometimes we want to have Dummy Sound Component for debugging,
for testing, for learning Framework behavior, etc, etc...
This patch adds Test-Component driver for it.

User can select CPU   Component by using "test-cpu"   compatible,
and  can select Codec Component by using "test-codec" compatible.

It doesn't support Platform so far, but is easy to add.

We can verbose print to know its progress if user selected
xxx-verbose compatible driver.

for example,
	test-cpu		   : silent  Component, silent  DAI
	test-cpu-verbose-component : verbose Component, silent  DAI
	test-cpu-verbose-dai	   : silent  Component, verbose DAI
	test-cpu-verbose	   : verbose Component, verbose DAI

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/877dein8rx.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/sound/soc/generic/Kconfig b/sound/soc/generic/Kconfig
index 4cafcf0e2bbf..bb734780669e 100644
--- a/sound/soc/generic/Kconfig
+++ b/sound/soc/generic/Kconfig
@@ -17,3 +17,9 @@ config SND_AUDIO_GRAPH_CARD
 	  This option enables generic simple sound card support
 	  with OF-graph DT bindings.
 	  It also support DPCM of multi CPU single Codec ststem.
+
+config SND_TEST_COMPONENT
+	tristate "ASoC Test component sound support"
+	depends on OF
+	help
+	  This option enables test component sound driver support.