LXR linux/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
  26static void
  27nv04_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
  33static void
  34nv04_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
  40static void
  41nv04_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
  49static void
  50nv04_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
  62static const struct nvkm_head_func
  63nv04_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
  70int
  71nv04_head_new(struct nvkm_disp *disp, int id)
  72{
  73        return nvkm_head_new_(&nv04_head, disp, id);
  74}
  75