From af78cec45f2d01be9d14c177e403c8021ebfd40e Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Date: Mon, 16 Sep 2019 16:42:40 -0500
Subject: [PATCH] ASoC: soc-acpi: add link_mask field
Git-commit: af78cec45f2d01be9d14c177e403c8021ebfd40e
Patch-mainline: v5.5-rc1
References: jsc#SLE-16518

When interfaces can be pin-muxed, static information from ACPI might
not be enough. Add information on which links needs to be enabled by
hardware/firmware for a specific machine driver to be selected.

When walking through the list of possible machines, links will be
checked, which implies that configurations where multiple links are
required need to be checked first.

Additional criteria will be needed later, such as which SoundWire
Slave devices are actually enabled, but for now this helps detect
between basic configurations.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20190916214251.13130-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 include/sound/soc-acpi.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/sound/soc-acpi.h b/include/sound/soc-acpi.h
index 35b38e41e5b2..c0fb71c7b3ad 100644
--- a/include/sound/soc-acpi.h
+++ b/include/sound/soc-acpi.h
@@ -75,6 +75,7 @@ struct snd_soc_acpi_mach_params {
  * all firmware/topology related fields.
  *
  * @id: ACPI ID (usually the codec's) used to find a matching machine driver.
+ * @link_mask: describes required board layout, e.g. for SoundWire.
  * @drv_name: machine driver name
  * @fw_filename: firmware file name. Used when SOF is not enabled.
  * @board: board name
@@ -90,6 +91,7 @@ struct snd_soc_acpi_mach_params {
 /* Descriptor for SST ASoC machine driver */
 struct snd_soc_acpi_mach {
 	const u8 id[ACPI_ID_LEN];
+	const u32 link_mask;
 	const char *drv_name;
 	const char *fw_filename;
 	const char *board;
-- 
2.16.4