1 /* $NetBSD: nouveau_nvkm_engine_disp_hdmigm200.c,v 1.2 2021/12/18 23:45:35 riastradh Exp $ */
2
3 /*
4 * Copyright 2018 Ilia Mirkin
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Ilia Mirkin
25 */
26 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_engine_disp_hdmigm200.c,v 1.2 2021/12/18 23:45:35 riastradh Exp $");
28
29 #include "hdmi.h"
30
31 void
gm200_hdmi_scdc(struct nvkm_ior * ior,int head,u8 scdc)32 gm200_hdmi_scdc(struct nvkm_ior *ior, int head, u8 scdc)
33 {
34 struct nvkm_device *device = ior->disp->engine.subdev.device;
35 const u32 hoff = head * 0x800;
36 const u32 ctrl = scdc & 0x3;
37
38 nvkm_mask(device, 0x61c5bc + hoff, 0x00000003, ctrl);
39
40 ior->tmds.high_speed = !!(scdc & 0x2);
41 }
42