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authorPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>2021-07-14 11:22:00 +0800
committerMark Brown <broonie@kernel.org>2021-07-14 18:02:05 +0100
commit81d3d3d0bf09e606dbc1e3daad1c7cef3976fca2 (patch)
treedfddac372d7f6ec25039f005be6924fe04e8838c /sound/soc/codecs/Makefile
parente73f0f0ee7541171d89f2e2491130c7771ba58d3 (diff)
downloadlinux-81d3d3d0bf09e606dbc1e3daad1c7cef3976fca2.tar.bz2
ASoC: codecs: add SoundWire mockup device support
To test the host controller and bus management code, it is currently required to have a physical SoundWire peripheral attached to the bus. To help with pre-silicon or early hardware enablement, it would be very useful to have a SoundWire 'mockup' device that is exposed in platform firmware but does not drive any signal on the bus. This is different to the existing ASoC 'dummy' codec uses for I2S/TDM, the SoundWire spec makes it clear that a device that is not attached to the bus is not permitted to interact with the bus, be it for command/control or data. This patch exposes a 'mockup' device, with a minimalist driver, with 4 partID values reserved by Intel for such test configurations. The mockup device exposes one full-duplex DAI based on 2 ports (DP1 for playback and DP8 for capture). The capture data port is just virtual, such a mockup device is prevented by the SoundWire specification from presenting any data generated by a Source port without being Attached. All the callbacks exposed by the SoundWire Slave interface are populated, even if they just return immediately. This is intentional to describe what a minimal codec driver should do and implement and help new codec vendors provide support for their devices. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20210714032209.11284-2-yung-chuan.liao@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/Makefile')
-rw-r--r--sound/soc/codecs/Makefile2
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index de8b83dd2c76..d656b1405473 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -203,6 +203,7 @@ snd-soc-rt711-objs := rt711.o rt711-sdw.o
snd-soc-rt711-sdca-objs := rt711-sdca.o rt711-sdca-sdw.o
snd-soc-rt715-objs := rt715.o rt715-sdw.o
snd-soc-rt715-sdca-objs := rt715-sdca.o rt715-sdca-sdw.o
+snd-soc-sdw-mockup-objs := sdw-mockup.o
snd-soc-sgtl5000-objs := sgtl5000.o
snd-soc-alc5623-objs := alc5623.o
snd-soc-alc5632-objs := alc5632.o
@@ -530,6 +531,7 @@ obj-$(CONFIG_SND_SOC_RT711) += snd-soc-rt711.o
obj-$(CONFIG_SND_SOC_RT711_SDCA_SDW) += snd-soc-rt711-sdca.o
obj-$(CONFIG_SND_SOC_RT715) += snd-soc-rt715.o
obj-$(CONFIG_SND_SOC_RT715_SDCA_SDW) += snd-soc-rt715-sdca.o
+obj-$(CONFIG_SND_SOC_SDW_MOCKUP) += snd-soc-sdw-mockup.o
obj-$(CONFIG_SND_SOC_SGTL5000) += snd-soc-sgtl5000.o
obj-$(CONFIG_SND_SOC_SIGMADSP) += snd-soc-sigmadsp.o
obj-$(CONFIG_SND_SOC_SIGMADSP_I2C) += snd-soc-sigmadsp-i2c.o