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      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
     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