drivers/gpu/drm/nouveau/nvkm/engine/disp/headnv04.c

   1 /*
   2  * Copyright 2017 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs <bskeggs@redhat.com>
  23  */
  24 #include "head.h"
  25
  26 static void
  27 nv04_head_vblank_put(struct nvkm_head *head)
  28 {
  29         struct nvkm_device *device = head->disp->engine.subdev.device;
  30         nvkm_wr32(device, 0x600140 + (head->id * 0x2000) , 0x00000000);
  31 }
  32
  33 static void
  34 nv04_head_vblank_get(struct nvkm_head *head)
  35 {
  36         struct nvkm_device *device = head->disp->engine.subdev.device;
  37         nvkm_wr32(device, 0x600140 + (head->id * 0x2000) , 0x00000001);
  38 }
  39
  40 static void
  41 nv04_head_rgpos(struct nvkm_head *head, u16 *hline, u16 *vline)
  42 {
  43         struct nvkm_device *device = head->disp->engine.subdev.device;
  44         u32 data = nvkm_rd32(device, 0x600868 + (head->id * 0x2000));
  45         *hline = (data & 0xffff0000) >> 16;
  46         *vline = (data & 0x0000ffff);
  47 }
  48
  49 static void
  50 nv04_head_state(struct nvkm_head *head, struct nvkm_head_state *state)
  51 {
  52         struct nvkm_device *device = head->disp->engine.subdev.device;
  53         const u32 hoff = head->id * 0x0200;
  54         state->vblanks = nvkm_rd32(device, 0x680800 + hoff) & 0x0000ffff;
  55         state->vtotal  = nvkm_rd32(device, 0x680804 + hoff) & 0x0000ffff;
  56         state->vblanke = state->vtotal - 1;
  57         state->hblanks = nvkm_rd32(device, 0x680820 + hoff) & 0x0000ffff;
  58         state->htotal  = nvkm_rd32(device, 0x680824 + hoff) & 0x0000ffff;
  59         state->hblanke = state->htotal - 1;
  60 }
  61
  62 static const struct nvkm_head_func
  63 nv04_head = {
  64         .state = nv04_head_state,
  65         .rgpos = nv04_head_rgpos,
  66         .vblank_get = nv04_head_vblank_get,
  67         .vblank_put = nv04_head_vblank_put,
  68 };
  69
  70 int
  71 nv04_head_new(struct nvkm_disp *disp, int id)
  72 {
  73         return nvkm_head_new_(&nv04_head, disp, id);
  74 }