screen: drm add encoder

6 files changed, 93 insertions, 12 deletions

diff --git a/src/screen/drm/card.zig b/src/screen/drm/card.zig
index 9ad34fb..c5cca24 100644
--- a/src/screen/drm/card.zig
+++ b/src/screen/drm/card.zig
@@ -5,6 +5,7 @@ const cerror = @import("../cerror.zig");
 
 const Resources = @import("resources.zig").Resources;
 const Connector = @import("connector/root.zig").Connector;
+const Encoder = @import("encoder/root.zig").Encoder;
 
 
 pub const Card = struct {
@@ -42,4 +43,8 @@ pub const Card = struct {
     pub fn connector(self: *Card, id: u32) !Connector {
         return Connector.init(self, id);
     }
+
+    pub fn encoder(self: *Card, id: u32) !Encoder {
+        return Encoder.init(self, id);
+    }
 };
diff --git a/src/screen/drm/connector/root.zig b/src/screen/drm/connector/root.zig
index 8883d29..5766851 100644
--- a/src/screen/drm/connector/root.zig
+++ b/src/screen/drm/connector/root.zig
@@ -5,6 +5,7 @@ const Card = @import("../card.zig").Card;
 
 pub const Connection = @import("connection.zig").Connection;
 pub const Mode = @import("mode.zig").Mode;
+pub const ConnectorType = @import("type.zig").Type;
 
 const RawConnector = extern struct {
     encoder_ids: ?*u32,
@@ -15,9 +16,9 @@ const RawConnector = extern struct {
     count_props: u32,
     count_encoders: u32,
     encoder_id: u32,
-    connector_id: u32,
-    connector_type: u32,
-    connector_type_id: u32,
+    id: u32,
+    type: ConnectorType,
+    type_id: u32,
     connection: Connection,
     mm_width: u32,
     mm_height: u32,
@@ -35,9 +36,9 @@ pub const Connector = struct {
     prop_ids: []u32,
     prop_value_ids: []u64,
     encoder_id: u32,
-    connector_id: u32,
-    connector_type: u32,
-    connector_type_id: u32,
+    id: u32,
+    type: ConnectorType,
+    type_id: u32,
     connection: Connection,
     mm_width: u32,
     mm_height: u32,
@@ -45,7 +46,7 @@ pub const Connector = struct {
     pad: u32,
 
     pub fn raw_without_ids(card: *Card, id: u32) !RawConnector {
-        var result = std.mem.zeroInit(RawConnector, .{ .connector_id = id });
+        var result = std.mem.zeroInit(RawConnector, .{ .id = id });
         try Drm.get_connector.request(card.file.handle, RawConnector, &result);
         return result;
     }
@@ -61,9 +62,9 @@ pub const Connector = struct {
             .prop_ids = try card.allocator.alloc(u32, raw.count_props),
             .prop_value_ids = try card.allocator.alloc(u64, raw.count_props),
             .encoder_id = raw.encoder_id,
-            .connector_id = raw.connector_id,
-            .connector_type = raw.connector_type,
-            .connector_type_id = raw.connector_type_id,
+            .id = raw.id,
+            .type = raw.type,
+            .type_id = raw.type_id,
             .connection = raw.connection,
             .mm_width = raw.mm_width,
             .mm_height = raw.mm_height,
diff --git a/src/screen/drm/connector/type.zig b/src/screen/drm/connector/type.zig
new file mode 100644
index 0000000..15db753
--- /dev/null
+++ b/src/screen/drm/connector/type.zig
@@ -0,0 +1,23 @@
+pub const Type = enum(u32) {
+    unknown = 0,
+    vga = 1,
+    dvi_i = 2,
+    dvi_d = 3,
+    dvi_a = 4,
+    composite = 5,
+    s_video = 6,
+    lvds = 7,
+    component = 8,
+    nine_pin_din = 9,
+    display_port = 10,
+    hdmi_a = 11,
+    hdmi_b = 12,
+    tv = 13,
+    edp = 14,
+    virtual = 15,
+    dsi = 16,
+    dpi = 17,
+    writeback = 18,
+    spi = 19,
+    usb = 20,
+};
diff --git a/src/screen/drm/encoder/root.zig b/src/screen/drm/encoder/root.zig
new file mode 100644
index 0000000..0712c76
--- /dev/null
+++ b/src/screen/drm/encoder/root.zig
@@ -0,0 +1,40 @@
+const std = @import("std");
+const Drm = @import("../request.zig").Drm;
+const Card = @import("../card.zig").Card;
+
+const Type = @import("type.zig").Type;
+
+pub const RawEncoder = extern struct {
+    id: u32,
+    type: Type,
+    crtc_id: u32,
+    possible_crtcs: u32,
+    possible_clones: u32,
+};
+
+pub const Encoder = struct {
+    const Self = @This();
+
+    id: u32,
+    type: Type,
+    possible_crtcs: u32,
+    possible_clones: u32,
+    card: *Card,
+
+    pub fn init(card: *Card, id: u32) !Self {
+        var raw = std.mem.zeroInit(RawEncoder, .{ .id = id });
+        try Drm.get_encoder.request(card.file.handle, RawEncoder, &raw);
+
+        return .{
+            .id = raw.id,
+            .type = raw.type,
+            .possible_crtcs = raw.possible_crtcs,
+            .possible_clones = raw.possible_clones,
+            .card = card
+        };
+    }
+
+    pub fn deinit(self: *Self) void {
+        _ = self;
+    }
+};
diff --git a/src/screen/drm/encoder/type.zig b/src/screen/drm/encoder/type.zig
new file mode 100644
index 0000000..a26dc9c
--- /dev/null
+++ b/src/screen/drm/encoder/type.zig
@@ -0,0 +1,11 @@
+pub const Type = enum(u32) {
+    none = 0,
+    dac = 1,
+    tmds = 2,
+    lvds = 3,
+    tvdac = 4,
+    virtual = 5,
+    dsi = 6,
+    dpmst = 7,
+    dpi = 8,
+};
diff --git a/src/screen/drm/request.zig b/src/screen/drm/request.zig
index bf9701c..13ccfd3 100644
--- a/src/screen/drm/request.zig
+++ b/src/screen/drm/request.zig
@@ -9,8 +9,9 @@ fn ioctl(fd: os.fd_t, request: u32, arg: usize) !void {
 pub const Drm = enum(u8) {
     const Self = @This();
 
-    get_resources = 0xA0,
-    get_connector = 0xA7,
+    get_resources = 0xa0,
+    get_encoder = 0xa6,
+    get_connector = 0xa7,
 
     pub fn request(self: Self, fd: os.fd_t, T: type, arg: *T) !void {
         const id = os.IOCTL.IOWR('d', @intFromEnum(self), T);