[PATCH] platform/x86: dell-laptop: Add 2-in-1 devices to the DMI whitelist

[Alexander Abrosimov <alexander.n.abrosimov@gmail.com>]

SMBIOS 3.0.0 Specification introduced new Chassis Types field values for
2-in-1 devices like tablets, convertibles and detachables. Dell's
Inspiron 2-in-1 and XPS 2-in-1 fall into this category and they have to
be added to the DMI whitelist, so rfkill and backlight can be controlled
for them as for other laptops.

Signed-off-by: Alexander Abrosimov <alexander.n.abrosimov@gmail.com>
---
 drivers/platform/x86/dell-laptop.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index cd4725e7e0b5..23fc94d70ea1 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -110,6 +110,24 @@ static const struct dmi_system_id dell_device_table[] __initconst = {
 		},
 	},
 	{
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_CHASSIS_TYPE, "30"), /*Tablet*/
+		},
+	},
+	{
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_CHASSIS_TYPE, "31"), /*Convertible*/
+		},
+	},
+	{
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_CHASSIS_TYPE, "32"), /*Detachable*/
+		},
+	},
+	{
 		.ident = "Dell Computer Corporation",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
-- 
2.13.6