LXR linux/drivers/gpu/drm/nouveau/nvkm/engine/disp/headnv50.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
  27nv50_head_vblank_put(struct nvkm_head *head)
  28{
  29        struct nvkm_device *device = head->disp->engine.subdev.device;
  30        nvkm_mask(device, 0x61002c, (4 << head->id), 0);
  31}
  32
  33static void
  34nv50_head_vblank_get(struct nvkm_head *head)
  35{
  36        struct nvkm_device *device = head->disp->engine.subdev.device;
  37        nvkm_mask(device, 0x61002c, (4 << head->id), (4 << head->id));
  38}
  39
  40static void
  41nv50_head_rgclk(struct nvkm_head *head, int div)
  42{
  43        struct nvkm_device *device = head->disp->engine.subdev.device;
  44        nvkm_mask(device, 0x614200 + (head->id * 0x800), 0x0000000f, div);
  45}
  46
  47void
  48nv50_head_rgpos(struct nvkm_head *head, u16 *hline, u16 *vline)
  49{
  50        struct nvkm_device *device = head->disp->engine.subdev.device;
  51        const u32 hoff = head->id * 0x800;
  52        /* vline read locks hline. */
  53        *vline = nvkm_rd32(device, 0x616340 + hoff) & 0x0000ffff;
  54        *hline = nvkm_rd32(device, 0x616344 + hoff) & 0x0000ffff;
  55}
  56
  57static void
  58nv50_head_state(struct nvkm_head *head, struct nvkm_head_state *state)
  59{
  60        struct nvkm_device *device = head->disp->engine.subdev.device;
  61        const u32 hoff = head->id * 0x540 + (state == &head->arm) * 4;
  62        u32 data;
  63
  64        data = nvkm_rd32(device, 0x610ae8 + hoff);
  65        state->vblanke = (data & 0xffff0000) >> 16;
  66        state->hblanke = (data & 0x0000ffff);
  67        data = nvkm_rd32(device, 0x610af0 + hoff);
  68        state->vblanks = (data & 0xffff0000) >> 16;
  69        state->hblanks = (data & 0x0000ffff);
  70        data = nvkm_rd32(device, 0x610af8 + hoff);
  71        state->vtotal = (data & 0xffff0000) >> 16;
  72        state->htotal = (data & 0x0000ffff);
  73        data = nvkm_rd32(device, 0x610b00 + hoff);
  74        state->vsynce = (data & 0xffff0000) >> 16;
  75        state->hsynce = (data & 0x0000ffff);
  76        state->hz = (nvkm_rd32(device, 0x610ad0 + hoff) & 0x003fffff) * 1000;
  77}
  78
  79static const struct nvkm_head_func
  80nv50_head = {
  81        .state = nv50_head_state,
  82        .rgpos = nv50_head_rgpos,
  83        .rgclk = nv50_head_rgclk,
  84        .vblank_get = nv50_head_vblank_get,
  85        .vblank_put = nv50_head_vblank_put,
  86};
  87
  88int
  89nv50_head_new(struct nvkm_disp *disp, int id)
  90{
  91        return nvkm_head_new_(&nv50_head, disp, id);
  92}
  93
  94int
  95nv50_head_cnt(struct nvkm_disp *disp, unsigned long *pmask)
  96{
  97        *pmask = 3;
  98        return 2;
  99}
 100