[PATCH 3/3] intel-hid: disable switches on Dell Latitute 7410 2in1

[Elia Devito]

Disable switches on Dell Latitute 7410 2in1 due firmware bug

Signed-off-by: Elia Devito <eliadev...@gmail.com>
---
maybe Mario Limonciello can help on this

 drivers/platform/x86/intel-hid.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/intel-hid.c b/drivers/platform/x86/intel-hid.c
index 54f5cbfd2189..dc82415abd24 100644
--- a/drivers/platform/x86/intel-hid.c
+++ b/drivers/platform/x86/intel-hid.c
@@ -105,6 +105,22 @@ static const struct dmi_system_id 
button_array_switches_table[] = {
        { }
 };
 
+static const struct dmi_system_id button_array_switches_disable[] = {
+       {
+               /*
+                * Dell Latitute 7410 2in1 emit wrong event and VGBS method 
return wrong
+                * value when booted with AC adapter plugged-in, disable 
switches to
+                * prevent wrong beaviour.
+                */
+               .ident = "Dell Latitute 7410 2in1",
+               .matches = {
+                       DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+                       DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Latitude 7410"),
+               },
+       },
+       { }
+};
+
 #define KEYMAP_LEN \
        (ARRAY_SIZE(intel_array_keymap) + ARRAY_SIZE(intel_array_switches) + 1)
 
@@ -515,7 +531,8 @@ static bool intel_button_array_has_switches(struct 
platform_device *device)
                return false;
 
        if (tablet_mode_switch != 1) {
-               if (!dmi_check_system(button_array_switches_table))
+               if (!dmi_check_system(button_array_switches_table) ||
+                               dmi_check_system(button_array_switches_disable))
                        return false;
        }
 
-- 
2.28.0