[alsa-devel] [PATCH v1 5/8] x86/quirks: Add a DMI quirk for Microsoft Surface 3

[Andy Shevchenko]

Add a DMI quirk for Microsoft Surface 3 which will be utilized by few drivers.

Cc: Cezary Rojewski <cezary.rojewski at intel.com>
Cc: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Cc: Liam Girdwood <liam.r.girdwood at linux.intel.com>
Cc: Jie Yang <yang.jie at linux.intel.com>
Cc: Mark Brown <broonie at kernel.org>
Cc: alsa-devel at alsa-project.org
Signed-off-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>
---
 arch/x86/kernel/quirks.c                  | 16 ++++++++++++++++
 include/linux/platform_data/x86/machine.h |  5 +++++
 2 files changed, 21 insertions(+)

diff --git a/arch/x86/kernel/quirks.c b/arch/x86/kernel/quirks.c
index 447d4fba8516..9574ef7eaa66 100644
--- a/arch/x86/kernel/quirks.c
+++ b/arch/x86/kernel/quirks.c
@@ -673,6 +673,15 @@ static int apple_machine_cb(const struct dmi_system_id *id)
 	return 1;
 }
 
+bool x86_microsoft_surface_3_machine;
+EXPORT_SYMBOL(x86_microsoft_surface_3_machine);
+
+static int microsoft_surface_3_machine_cb(const struct dmi_system_id *id)
+{
+	x86_microsoft_surface_3_machine = true;
+	return 1;
+}
+
 static const struct dmi_system_id x86_machine_table[] = {
 	{
 		.ident = "x86 Apple Macintosh",
@@ -688,6 +697,13 @@ static const struct dmi_system_id x86_machine_table[] = {
 		},
 		.callback = apple_machine_cb,
 	},
+	{
+		.ident = "Microsoft Surface 3",
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "Surface 3"),
+		},
+		.callback = microsoft_surface_3_machine_cb,
+	},
 	{}
 };
 
diff --git a/include/linux/platform_data/x86/machine.h b/include/linux/platform_data/x86/machine.h
index b1e7a560a046..9bdf5a06b490 100644
--- a/include/linux/platform_data/x86/machine.h
+++ b/include/linux/platform_data/x86/machine.h
@@ -8,8 +8,13 @@
  * x86_apple_machine - whether the machine is an x86 Apple Macintosh
  */
 extern bool x86_apple_machine;
+/**
+ * x86_microsoft_surface_3_machine - whether the machine is Microsoft Surface 3
+ */
+extern bool x86_microsoft_surface_3_machine;
 #else
 #define x86_apple_machine			false
+#define x86_microsoft_surface_3_machine		false
 #endif
 
 #endif	/* PLATFORM_DATA_X86_MACHINE_H */
-- 
2.24.1