ASoC: qcom: Fix building APQ8016 machine driver without SOUNDWIRE

Older Qualcomm platforms like APQ8016 do not have hardware support for
SoundWire, so kernel configurations made specifically for those platforms
will usually not have CONFIG_SOUNDWIRE enabled.

Unfortunately commit 8d89cf6ff229 ("ASoC: qcom: cleanup and fix
dependency of QCOM_COMMON") breaks those kernel configurations, because
SOUNDWIRE is now a required dependency for SND_SOC_QCOM_COMMON (and in
turn also SND_SOC_APQ8016_SBC). Trying to migrate such a kernel config
silently disables SND_SOC_APQ8016_SBC and breaks audio functionality.

The soundwire helpers in common.c are only used by two of the Qualcomm
audio machine drivers, so building and requiring CONFIG_SOUNDWIRE for
all platforms is unnecessary.

There is no need to stuff all common code into a single module. Fix the
issue by moving the soundwire helpers to a separate SND_SOC_QCOM_SDW
module/option that is selected only by the machine drivers that make
use of them. This also allows reverting the imply/depends changes from
the previous fix because both SM8250 and SC8280XP already depend on
SOUNDWIRE, so the soundwire helpers will be only built if SOUNDWIRE
is really enabled.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Fixes: 8d89cf6ff229 ("ASoC: qcom: cleanup and fix dependency of QCOM_COMMON")
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20221231115506.82991-1-stephan@gerhold.net
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: qcom: cleanup and fix dependency of QCOM_COMMON

SND_SOC_QCOM_COMMON depends on SOUNDWIRE for some symbols but this
is not explicitly specified using Kconfig depends. On the other hand
SND_SOC_QCOM_COMMON is also directly selected by the sound card
Kconfigs, this could result in various combinations and some symbols
ending up in modules and soundcard that uses those symbols as in-build
driver.

Fix these issues by explicitly specifying the dependencies of
SND_SOC_QCOM_COMMON and also use imply a to select SND_SOC_QCOM_COMMON
so that the symbol is selected based on its dependencies.

Also remove dummy stubs in common.c around CONFIG_SOUNDWIRE

Fixes: 3bd975f3ae0a ("ASoC: qcom: sm8250: move some code to common")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20221124140351.407506-1-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: qcom: sm8250: move some code to common

SM8450 machine driver code can be reused across multiple Qualcomm SoCs,
At least another 2 of them for now (SM8450 and SC8250XP).

Move some of the common SoundWire stream specific code to common file
so that other drivers can use it instead of duplication.

This patch is to prepare the common driver to be able to add new SoCs support
with less dupication.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220916132427.1845-5-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: qcom: remove unused header files from common.h

This patch removes unused header files from common.h.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: qcom: Add support to parse common audio device nodes

This adds support to parse cpu, platform and codec
device nodes and add them in dai-links. Also, update
apq8096 machine driver to use the common API.

Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Rohit kumar <rohitkr@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>