Require CONFIG_HID_PLAYSTATION for DualSense key layout

Some olders kernels don't yet support HID_PLAYSTATION. While they are
working on supporting this driver, provide this temporary solution.

Before this patch, if the key layout is loaded, but there is no
HID_PLAYSTATION, then the mappings on the device will be incorrect.

With this patch, this key layout will not be loaded unless there is a
CONFIG_HID_PLAYSTATION enabled on the device.

Instead, when the main layout cannot be loaded, we make another attempt
to load a fallback layout. This way, the mappings on DualSense can be
correct even if the HID_PLAYSTATION module is not loaded.

In this CL, the fallback layout was tested using controllerTester.

Bug: 228005926
Test: tested mappings with a DualSense controller on a device that does
not have CONFIG_HID_PLAYSTATION

Merged-In: I7e46ae1943cd2c63b8c0b03fdf5d71adeea89f6f
Change-Id: I7e46ae1943cd2c63b8c0b03fdf5d71adeea89f6f

1 files changed, 5 insertions, 0 deletions

diff --git a/tools/validatekeymaps/Main.cpp b/tools/validatekeymaps/Main.cpp
index 991b28071515..cbfdfe4d89c4 100644
--- a/tools/validatekeymaps/Main.cpp
+++ b/tools/validatekeymaps/Main.cpp
@@ -97,6 +97,11 @@ static bool validateFile(const char* filename) {
         case FileType::KEY_LAYOUT: {
             base::Result<std::shared_ptr<KeyLayoutMap>> ret = KeyLayoutMap::load(filename);
             if (!ret.ok()) {
+                if (ret.error().message() == "Missing kernel config") {
+                    // It means the layout is valid, but won't be loaded on this device because
+                    // this layout requires a certain kernel config.
+                    return true;
+                }
                 error("Error %s parsing key layout file.\n\n", ret.error().message().c_str());
                 return false;
             }