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      1 /*	$NetBSD: nouveau_nvkm_engine_disp_headnv04.c,v 1.2 2021/12/18 23:45:35 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2017 Red Hat Inc.
      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: Ben Skeggs <bskeggs (at) redhat.com>
     25  */
     26 #include <sys/cdefs.h>
     27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_engine_disp_headnv04.c,v 1.2 2021/12/18 23:45:35 riastradh Exp $");
     28 
     29 #include "head.h"
     30 
     31 static void
     32 nv04_head_vblank_put(struct nvkm_head *head)
     33 {
     34 	struct nvkm_device *device = head->disp->engine.subdev.device;
     35 	nvkm_wr32(device, 0x600140 + (head->id * 0x2000) , 0x00000000);
     36 }
     37 
     38 static void
     39 nv04_head_vblank_get(struct nvkm_head *head)
     40 {
     41 	struct nvkm_device *device = head->disp->engine.subdev.device;
     42 	nvkm_wr32(device, 0x600140 + (head->id * 0x2000) , 0x00000001);
     43 }
     44 
     45 static void
     46 nv04_head_rgpos(struct nvkm_head *head, u16 *hline, u16 *vline)
     47 {
     48 	struct nvkm_device *device = head->disp->engine.subdev.device;
     49 	u32 data = nvkm_rd32(device, 0x600868 + (head->id * 0x2000));
     50 	*hline = (data & 0xffff0000) >> 16;
     51 	*vline = (data & 0x0000ffff);
     52 }
     53 
     54 static void
     55 nv04_head_state(struct nvkm_head *head, struct nvkm_head_state *state)
     56 {
     57 	struct nvkm_device *device = head->disp->engine.subdev.device;
     58 	const u32 hoff = head->id * 0x0200;
     59 	state->vblanks = nvkm_rd32(device, 0x680800 + hoff) & 0x0000ffff;
     60 	state->vtotal  = nvkm_rd32(device, 0x680804 + hoff) & 0x0000ffff;
     61 	state->vblanke = state->vtotal - 1;
     62 	state->hblanks = nvkm_rd32(device, 0x680820 + hoff) & 0x0000ffff;
     63 	state->htotal  = nvkm_rd32(device, 0x680824 + hoff) & 0x0000ffff;
     64 	state->hblanke = state->htotal - 1;
     65 }
     66 
     67 static const struct nvkm_head_func
     68 nv04_head = {
     69 	.state = nv04_head_state,
     70 	.rgpos = nv04_head_rgpos,
     71 	.vblank_get = nv04_head_vblank_get,
     72 	.vblank_put = nv04_head_vblank_put,
     73 };
     74 
     75 int
     76 nv04_head_new(struct nvkm_disp *disp, int id)
     77 {
     78 	return nvkm_head_new_(&nv04_head, disp, id);
     79 }
     80