Allow keyboard remapping

Signed-off-by: Daniel Schaefer <dhs@frame.work>

Author: JohnAZoidberg

framework_lib/src/chromium_ec/command.rs

@@ -60,6 +60,7 @@ pub enum EcCommands {
     FlashNotified = 0x3E01,
     /// Change charge limit
     ChargeLimitControl = 0x3E03,
+    UpdateKeyboardMatrix = 0x3E0C,
     /// Get/Set Fingerprint LED brightness
     FpLedLevelControl = 0x3E0E,
     /// Get information about the current chassis open/close status

framework_lib/src/chromium_ec/commands.rs

@@ -744,6 +744,31 @@ impl EcRequest<EcResponseFlashNotify> for EcRequestFlashNotify {
     }
 }
 
+#[repr(C, packed)]
+pub struct KeyboardMatrixMap {
+    pub row: u8,
+    pub col: u8,
+    pub scanset: u16,
+}
+#[repr(C, packed)]
+pub struct EcRequestUpdateKeyboardMatrix {
+    pub num_items: u32,
+    pub write: u32,
+    pub scan_update: [KeyboardMatrixMap; 1],
+}
+#[repr(C, packed)]
+pub struct EcResponseUpdateKeyboardMatrix {
+    pub num_items: u32,
+    pub write: u32,
+    pub scan_update: [KeyboardMatrixMap; 32],
+}
+
+impl EcRequest<EcResponseUpdateKeyboardMatrix> for EcRequestUpdateKeyboardMatrix {
+    fn command_id() -> EcCommands {
+        EcCommands::UpdateKeyboardMatrix
+    }
+}
+
 #[repr(C, packed)]
 pub struct EcRequestChassisOpenCheck {}
 

framework_lib/src/chromium_ec/mod.rs

@@ -353,6 +353,20 @@ impl CrosEc {
         ))
     }
 
+    pub fn remap_caps_to_ctrl(&self) -> EcResult<()> {
+        self.remap_key(6, 15, 0x0014)
+    }
+
+    pub fn remap_key(&self, row: u8, col: u8, scanset: u16) -> EcResult<()> {
+        let _current_matrix = EcRequestUpdateKeyboardMatrix {
+            num_items: 1,
+            write: 1,
+            scan_update: [KeyboardMatrixMap { row, col, scanset }],
+        }
+        .send_command(self)?;
+        Ok(())
+    }
+
     /// Get current status of Framework Laptop's microphone and camera privacy switches
     /// [true = device enabled/connected, false = device disabled]
     pub fn get_privacy_info(&self) -> EcResult<(bool, bool)> {