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      1 /*	$NetBSD: nouveau_nvkm_engine_disp_headnv50.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_headnv50.c,v 1.2 2021/12/18 23:45:35 riastradh Exp $");
     28 
     29 #include "head.h"
     30 
     31 static void
     32 nv50_head_vblank_put(struct nvkm_head *head)
     33 {
     34 	struct nvkm_device *device = head->disp->engine.subdev.device;
     35 	nvkm_mask(device, 0x61002c, (4 << head->id), 0);
     36 }
     37 
     38 static void
     39 nv50_head_vblank_get(struct nvkm_head *head)
     40 {
     41 	struct nvkm_device *device = head->disp->engine.subdev.device;
     42 	nvkm_mask(device, 0x61002c, (4 << head->id), (4 << head->id));
     43 }
     44 
     45 static void
     46 nv50_head_rgclk(struct nvkm_head *head, int div)
     47 {
     48 	struct nvkm_device *device = head->disp->engine.subdev.device;
     49 	nvkm_mask(device, 0x614200 + (head->id * 0x800), 0x0000000f, div);
     50 }
     51 
     52 void
     53 nv50_head_rgpos(struct nvkm_head *head, u16 *hline, u16 *vline)
     54 {
     55 	struct nvkm_device *device = head->disp->engine.subdev.device;
     56 	const u32 hoff = head->id * 0x800;
     57 	/* vline read locks hline. */
     58 	*vline = nvkm_rd32(device, 0x616340 + hoff) & 0x0000ffff;
     59 	*hline = nvkm_rd32(device, 0x616344 + hoff) & 0x0000ffff;
     60 }
     61 
     62 static void
     63 nv50_head_state(struct nvkm_head *head, struct nvkm_head_state *state)
     64 {
     65 	struct nvkm_device *device = head->disp->engine.subdev.device;
     66 	const u32 hoff = head->id * 0x540 + (state == &head->arm) * 4;
     67 	u32 data;
     68 
     69 	data = nvkm_rd32(device, 0x610ae8 + hoff);
     70 	state->vblanke = (data & 0xffff0000) >> 16;
     71 	state->hblanke = (data & 0x0000ffff);
     72 	data = nvkm_rd32(device, 0x610af0 + hoff);
     73 	state->vblanks = (data & 0xffff0000) >> 16;
     74 	state->hblanks = (data & 0x0000ffff);
     75 	data = nvkm_rd32(device, 0x610af8 + hoff);
     76 	state->vtotal = (data & 0xffff0000) >> 16;
     77 	state->htotal = (data & 0x0000ffff);
     78 	data = nvkm_rd32(device, 0x610b00 + hoff);
     79 	state->vsynce = (data & 0xffff0000) >> 16;
     80 	state->hsynce = (data & 0x0000ffff);
     81 	state->hz = (nvkm_rd32(device, 0x610ad0 + hoff) & 0x003fffff) * 1000;
     82 }
     83 
     84 static const struct nvkm_head_func
     85 nv50_head = {
     86 	.state = nv50_head_state,
     87 	.rgpos = nv50_head_rgpos,
     88 	.rgclk = nv50_head_rgclk,
     89 	.vblank_get = nv50_head_vblank_get,
     90 	.vblank_put = nv50_head_vblank_put,
     91 };
     92 
     93 int
     94 nv50_head_new(struct nvkm_disp *disp, int id)
     95 {
     96 	return nvkm_head_new_(&nv50_head, disp, id);
     97 }
     98 
     99 int
    100 nv50_head_cnt(struct nvkm_disp *disp, unsigned long *pmask)
    101 {
    102 	*pmask = 3;
    103 	return 2;
    104 }
    105