set_crtc realisation

drivers/graphics/graphics-ipc/src/v2.rs

@@ -6,6 +6,7 @@ use std::os::unix::io::AsRawFd;
 use drm::control::connector::{self, State};
 use drm::control::Device as _;
 use drm::{Device as _, DriverCapability};
+use redox_ioctl::drm::{drm_mode_modeinfo};
 use syscall::CallFlags;
 
 pub use crate::common::Damage;
@@ -58,6 +59,36 @@ impl V2GraphicsHandle {
         )?;
         Ok(())
     }
+
+    pub fn set_crtc(
+        &self,
+        crtc_id: drm::control::crtc::Handle,
+        fb_id: drm::control::framebuffer::Handle,
+        connectors: &[connector::Handle],
+        mode: Option<drm_mode_modeinfo>,
+    ) -> io::Result<()> {
+        let connector_ids: Vec<u32> = connectors.iter().map(|c| (*c).into()).collect();
+
+        let cmd = ipc::drm_mode_crtc {
+            set_connectors_ptr: connector_ids.as_ptr() as u64,
+            count_connectors: connector_ids.len() as u32,
+            crtc_id: crtc_id.into(),
+            fb_id: fb_id.into(),
+            x: 0,
+            y: 0,
+            gamma_size: 0,
+            mode_valid: mode.is_some() as u32,
+            mode: mode.unwrap_or_default(),
+        };
+
+        libredox::call::call_wo(
+            self.file.as_raw_fd() as  usize,
+            unsafe { plain::as_bytes(&cmd) },
+            CallFlags::empty(),
+            &[ipc::MODE_SET_CRTC, 0, 0],
+        )?;
+        Ok(())
+    }
 }
 
 pub mod ipc {