ASoC: SOF: Intel: Baytrail: clarify mutual exclusion with Atom/SST driver

Some distros select all options blindly, which leads to confusion and
bug reports. Since SOF does not support Baytrail-CR for now, and
UCM/topology files are still being propagated to downstream distros,
make SOF on Baytrail an opt-in option that first require distros to
opt-out of existing defaults.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191101173045.27099-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/intel/Kconfig b/sound/soc/intel/Kconfig
index 01c9975..ba5b90e 100644 (file)
--- a/sound/soc/intel/Kconfig
+++ b/sound/soc/intel/Kconfig
@@ -101,6 +101,9 @@ config SND_SST_ATOM_HIFI2_PLATFORM_ACPI
          If you have a Intel Baytrail or Cherrytrail platform with an I2S
          codec, then enable this option by saying Y or m. This is a
          recommended option
+         This option is mutually exclusive with the SOF support on
+         Baytrail/Cherrytrail. If you want to enable SOF on
+         Baytrail/Cherrytrail, you need to deselect this option first.
 
 config SND_SOC_INTEL_SKYLAKE
        tristate "All Skylake/SST Platforms"

diff --git a/sound/soc/sof/intel/Kconfig b/sound/soc/sof/intel/Kconfig
index d522989..973c137 100644 (file)
--- a/sound/soc/sof/intel/Kconfig
+++ b/sound/soc/sof/intel/Kconfig
@@ -62,10 +62,18 @@ if SND_SOC_SOF_INTEL_ACPI
 
 config SND_SOC_SOF_BAYTRAIL_SUPPORT
        bool "SOF support for Baytrail, Braswell and Cherrytrail"
+       depends on SND_SST_ATOM_HIFI2_PLATFORM_ACPI=n
        help
          This adds support for Sound Open Firmware for Intel(R) platforms
          using the Baytrail, Braswell or Cherrytrail processors.
-         Say Y if you have such a device.
+         This option is mutually exclusive with the Atom/SST and Baytrail
+         legacy drivers. If you want to enable SOF on Baytrail/Cherrytrail,
+         you need to deselect those options first.
+         SOF does not support Baytrail-CR for now, so this option is not
+         recommended for distros. At some point all legacy drivers will be
+         deprecated but not before all userspace firmware/topology/UCM files
+         are made available to downstream distros.
+         Say Y if you want to enable SOF on Baytrail/Cherrytrail
          If unsure select "N".
 
 config SND_SOC_SOF_BAYTRAIL