feat: open Card from Device

example.zig

@@ -5,12 +5,13 @@ pub fn main(init: std.process.Init) !void {
     const io = init.io;
     const gpa = init.gpa;
 
-    const devid = drm.makeDev(226, 128);
+    const device = drm.Device.getFromDevId(io, gpa, drm.makeDev(226, 0), .{}) catch
-    const device = try drm.Device.getFromDevId(io, gpa, devid, .{});
+        try drm.Device.getFromDevId(io, gpa, drm.makeDev(226, 1), .{});
 
     std.log.info("Device node path: {s}.", .{device.nodePath()});
 
-    const card = try drm.Card.openAuto(io);
+    // const card = try drm.Card.openAuto(io);
+    const card = try device.openNode(io);
     defer card.close(io);
     const res = try card.getModesettingResources(gpa);
     defer res.deinit(gpa);

src/Device.zig

@@ -1,9 +1,11 @@
 const std = @import("std");
-const drm = @import("drm.zig");
-const sys = @import("sys.zig");
-const log = std.log.scoped(.drm);
 const path_max = std.os.linux.PATH_MAX;
 
+const Card = @import("Card.zig");
+const drm = @import("drm.zig");
+const sys = @import("sys.zig");
+
+const log = std.log.scoped(.drm);
 const Device = @This();
 
 node_type: NodeType,
@@ -69,6 +71,10 @@ pub fn getFromDevId(io: std.Io, gpa: std.mem.Allocator, devid: std.posix.dev_t,
     } else error.NoDeviceFound;
 }
 
+pub fn openNode(self: *const Device, io: std.Io) std.Io.File.OpenError!Card {
+    return Card.open(io, self.nodePath());
+}
+
 pub const BusType = enum(c_int) {
     pci = 0,
     usb = 1,