chromium_ec: Implement GpioSet

Allow setting individual GPIOs.
You need to be careful because the definitions can change between each
platform and controlling some GPIOs can cause mainboard damaged if
controlled in correctly.

Co-Authored-by: Kieran Levin <ktl@frame.work>
Signed-off-by: Daniel Schaefer <dhs@frame.work>

Author: JohnAZoidberg

framework_lib/src/chromium_ec/command.rs

@@ -37,6 +37,7 @@ pub enum EcCommands {
     PwmGetDuty = 0x0026,
     SetTabletMode = 0x0031,
     AutoFanCtrl = 0x0052,
+    GpioSet = 0x0092,
     GpioGet = 0x0093,
     I2cPassthrough = 0x009e,
     ConsoleSnapshot = 0x0097,

framework_lib/src/chromium_ec/commands.rs

@@ -452,6 +452,18 @@ impl EcRequest<()> for EcRequestAutoFanCtrlV1 {
     }
 }
 
+#[repr(C, packed)]
+pub struct EcRequestGpioSetV0 {
+    pub name: [u8; 32],
+    pub value: u8,
+}
+
+impl EcRequest<()> for EcRequestGpioSetV0 {
+    fn command_id() -> EcCommands {
+        EcCommands::GpioSet
+    }
+}
+
 #[repr(C, packed)]
 pub struct EcRequestGpioGetV0 {
     pub name: [u8; 32],

framework_lib/src/chromium_ec/mod.rs

@@ -1580,6 +1580,19 @@ impl CrosEc {
         .send_command(self)
     }
 
+    pub fn set_gpio(&self, name: &str, value: bool) -> EcResult<()> {
+        const MAX_LEN: usize = 32;
+        let mut request = EcRequestGpioSetV0 {
+            name: [0; MAX_LEN],
+            value: value as u8,
+        };
+
+        let end = MAX_LEN.min(name.len());
+        request.name[..end].copy_from_slice(&name.as_bytes()[..end]);
+
+        request.send_command(self)?;
+        Ok(())
+    }
     pub fn get_gpio(&self, name: &str) -> EcResult<bool> {
         const MAX_LEN: usize = 32;
         let mut request = EcRequestGpioGetV0 { name: [0; MAX_LEN] };