[PATCH 1/3] ASoC: soc-acpi-intel-ptl-match: Make Chrome matches conditional

[Charles Keepax <ckeepax@opensource.cirrus.com>]

For PTL onwards Cirrus are intending to rely on function
topologies, rather than using a match table for each system
type. Chrome systems tend to have custom magic in the topology
and thus need to load a specific file. This causes problems as
these system can have the same layout as generic laptops causing
the match to apply to other laptops. Add a DMI quirk that forces
these matches to only apply to specific devices.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
---
 .../soc/intel/common/soc-acpi-intel-ptl-match.c  |  1 +
 .../intel/common/soc-acpi-intel-sdca-quirks.c    | 16 ++++++++++++++++
 .../intel/common/soc-acpi-intel-sdca-quirks.h    |  1 +
 3 files changed, 18 insertions(+)

diff --git a/sound/soc/intel/common/soc-acpi-intel-ptl-match.c b/sound/soc/intel/common/soc-acpi-intel-ptl-match.c
index ad3af8834e431..c6bf70e393975 100644
--- a/sound/soc/intel/common/soc-acpi-intel-ptl-match.c
+++ b/sound/soc/intel/common/soc-acpi-intel-ptl-match.c
@@ -632,6 +632,7 @@ struct snd_soc_acpi_mach snd_soc_acpi_intel_ptl_sdw_machines[] = {
 		.link_mask = BIT(2) | BIT(3),
 		.links = ptl_cs42l43_agg_l3_cs35l56_l2,
 		.drv_name = "sof_sdw",
+		.machine_check = snd_soc_acpi_intel_no_function_topology,
 		.sof_tplg_filename = "sof-ptl-cs42l43-agg-l3-cs35l56-l2.tplg",
 	},
 	{
diff --git a/sound/soc/intel/common/soc-acpi-intel-sdca-quirks.c b/sound/soc/intel/common/soc-acpi-intel-sdca-quirks.c
index 3eaa058f84608..7caabc501b163 100644
--- a/sound/soc/intel/common/soc-acpi-intel-sdca-quirks.c
+++ b/sound/soc/intel/common/soc-acpi-intel-sdca-quirks.c
@@ -6,6 +6,7 @@
  *
  */
 
+#include <linux/dmi.h>
 #include <linux/soundwire/sdw_intel.h>
 #include <sound/sdca.h>
 #include <sound/soc-acpi.h>
@@ -37,6 +38,21 @@ bool snd_soc_acpi_intel_sdca_is_device_rt712_vb(void *arg)
 }
 EXPORT_SYMBOL_NS(snd_soc_acpi_intel_sdca_is_device_rt712_vb, "SND_SOC_ACPI_INTEL_SDCA_QUIRKS");
 
+static const struct dmi_system_id function_topology_quirk_table[] = {
+	{
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Google"),
+		},
+	},
+	{}
+};
+
+bool snd_soc_acpi_intel_no_function_topology(void *arg)
+{
+	return !!dmi_check_system(function_topology_quirk_table);
+}
+EXPORT_SYMBOL_NS(snd_soc_acpi_intel_no_function_topology, "SND_SOC_ACPI_INTEL_SDCA_QUIRKS");
+
 MODULE_DESCRIPTION("ASoC ACPI Intel SDCA quirks");
 MODULE_LICENSE("GPL");
 MODULE_IMPORT_NS("SND_SOC_SDCA");
diff --git a/sound/soc/intel/common/soc-acpi-intel-sdca-quirks.h b/sound/soc/intel/common/soc-acpi-intel-sdca-quirks.h
index bead5ec6243f9..2ea0a1881c4bd 100644
--- a/sound/soc/intel/common/soc-acpi-intel-sdca-quirks.h
+++ b/sound/soc/intel/common/soc-acpi-intel-sdca-quirks.h
@@ -10,5 +10,6 @@
 #define _SND_SOC_ACPI_INTEL_SDCA_QUIRKS
 
 bool snd_soc_acpi_intel_sdca_is_device_rt712_vb(void *arg);
+bool snd_soc_acpi_intel_no_function_topology(void *arg);
 
 #endif
-- 
2.47.3