[alsa-devel] Applied "ASoC: SOF: Intel: Broadwell: clarify mutual exclusion with legacy driver" to the asoc tree

[Mark Brown]

The patch

   ASoC: SOF: Intel: Broadwell: clarify mutual exclusion with legacy driver

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.5

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From a6955fe0e2309feeab5ec71e4b0dcbe498f4f497 Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Date: Fri, 1 Nov 2019 12:30:36 -0500
Subject: [PATCH] ASoC: SOF: Intel: Broadwell: clarify mutual exclusion with
 legacy driver

Some distros select all options blindly, which leads to confusion and
bug reports. SOF does not fully support Broadwell due to firmware
dependencies, the machine drivers can only support one option, and
UCM/topology files are still being propagated to downstream distros,
so make SOF on Broadwell an opt-in option that first require distros
to opt-out of existing defaults.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=204237
Fixes: f35bf70f61d3 ('ASoC: Intel: Make sure BDW based machine drivers build for SOF')
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Link: https://lore.kernel.org/r/20191101173045.27099-3-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie at kernel.org>
---
 sound/soc/intel/Kconfig     |  3 +++
 sound/soc/sof/intel/Kconfig | 10 +++++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/sound/soc/intel/Kconfig b/sound/soc/intel/Kconfig
index ba5b90e66e2f..93ebe1297e41 100644
--- a/sound/soc/intel/Kconfig
+++ b/sound/soc/intel/Kconfig
@@ -59,6 +59,9 @@ config SND_SOC_INTEL_HASWELL
 	  If you have a Intel Haswell or Broadwell platform connected to
 	  an I2S codec, then enable this option by saying Y or m. This is
 	  typically used for Chromebooks. This is a recommended option.
+	  This option is mutually exclusive with the SOF support on
+	  Broadwell. If you want to enable SOF on Broadwell, you need to
+	  deselect this option first.
 
 config SND_SOC_INTEL_BAYTRAIL
 	tristate "Baytrail (legacy) Platforms"
diff --git a/sound/soc/sof/intel/Kconfig b/sound/soc/sof/intel/Kconfig
index 973c137a6c5a..cd9954bfec0b 100644
--- a/sound/soc/sof/intel/Kconfig
+++ b/sound/soc/sof/intel/Kconfig
@@ -85,10 +85,18 @@ config SND_SOC_SOF_BAYTRAIL
 
 config SND_SOC_SOF_BROADWELL_SUPPORT
 	bool "SOF support for Broadwell"
+	depends on SND_SOC_INTEL_HASWELL=n
 	help
 	  This adds support for Sound Open Firmware for Intel(R) platforms
 	  using the Broadwell processors.
-	  Say Y if you have such a device.
+	  This option is mutually exclusive with the Haswell/Broadwell legacy
+	  driver. If you want to enable SOF on Broadwell you need to deselect
+	  the legacy driver first.
+	  SOF does fully support Broadwell yet, 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 Broadwell
 	  If unsure select "N".
 
 config SND_SOC_SOF_BROADWELL
-- 
2.20.1