LXR linux/drivers/gpu/drm/nouveau/dispnv50/curs507a.c

   1/*
   2 * Copyright 2018 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#include "curs.h"
  23#include "core.h"
  24#include "head.h"
  25
  26#include <nvif/cl507a.h>
  27
  28#include <drm/drm_atomic_helper.h>
  29#include <drm/drm_plane_helper.h>
  30
  31static void
  32curs507a_update(struct nv50_wndw *wndw, u32 *interlock)
  33{
  34        nvif_wr32(&wndw->wimm.base.user, 0x0080, 0x00000000);
  35}
  36
  37static void
  38curs507a_point(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw)
  39{
  40        nvif_wr32(&wndw->wimm.base.user, 0x0084, asyw->point.y << 16 |
  41                                                 asyw->point.x);
  42}
  43
  44const struct nv50_wimm_func
  45curs507a = {
  46        .point = curs507a_point,
  47        .update = curs507a_update,
  48};
  49
  50static void
  51curs507a_prepare(struct nv50_wndw *wndw, struct nv50_head_atom *asyh,
  52                 struct nv50_wndw_atom *asyw)
  53{
  54        u32 handle = nv50_disp(wndw->plane.dev)->core->chan.vram.handle;
  55        u32 offset = asyw->image.offset[0];
  56        if (asyh->curs.handle != handle || asyh->curs.offset != offset) {
  57                asyh->curs.handle = handle;
  58                asyh->curs.offset = offset;
  59                asyh->set.curs = asyh->curs.visible;
  60        }
  61}
  62
  63static void
  64curs507a_release(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw,
  65                 struct nv50_head_atom *asyh)
  66{
  67        asyh->curs.visible = false;
  68}
  69
  70static int
  71curs507a_acquire(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw,
  72                 struct nv50_head_atom *asyh)
  73{
  74        struct nv50_head *head = nv50_head(asyw->state.crtc);
  75        int ret;
  76
  77        ret = drm_atomic_helper_check_plane_state(&asyw->state, &asyh->state,
  78                                                  DRM_PLANE_HELPER_NO_SCALING,
  79                                                  DRM_PLANE_HELPER_NO_SCALING,
  80                                                  true, true);
  81        asyh->curs.visible = asyw->state.visible;
  82        if (ret || !asyh->curs.visible)
  83                return ret;
  84
  85        if (asyw->image.w != asyw->image.h)
  86                return -EINVAL;
  87
  88        ret = head->func->curs_layout(head, asyw, asyh);
  89        if (ret)
  90                return ret;
  91
  92        return head->func->curs_format(head, asyw, asyh);
  93}
  94
  95static const u32
  96curs507a_format[] = {
  97        DRM_FORMAT_ARGB8888,
  98        0
  99};
 100
 101static const struct nv50_wndw_func
 102curs507a_wndw = {
 103        .acquire = curs507a_acquire,
 104        .release = curs507a_release,
 105        .prepare = curs507a_prepare,
 106};
 107
 108int
 109curs507a_new_(const struct nv50_wimm_func *func, struct nouveau_drm *drm,
 110              int head, s32 oclass, u32 interlock_data,
 111              struct nv50_wndw **pwndw)
 112{
 113        struct nv50_disp_cursor_v0 args = {
 114                .head = head,
 115        };
 116        struct nv50_disp *disp = nv50_disp(drm->dev);
 117        struct nv50_wndw *wndw;
 118        int ret;
 119
 120        ret = nv50_wndw_new_(&curs507a_wndw, drm->dev, DRM_PLANE_TYPE_CURSOR,
 121                             "curs", head, curs507a_format, BIT(head),
 122                             NV50_DISP_INTERLOCK_CURS, interlock_data, &wndw);
 123        if (*pwndw = wndw, ret)
 124                return ret;
 125
 126        ret = nvif_object_init(&disp->disp->object, 0, oclass, &args,
 127                               sizeof(args), &wndw->wimm.base.user);
 128        if (ret) {
 129                NV_ERROR(drm, "curs%04x allocation failed: %d\n", oclass, ret);
 130                return ret;
 131        }
 132
 133        nvif_object_map(&wndw->wimm.base.user, NULL, 0);
 134        wndw->immd = func;
 135        wndw->ctxdma.parent = NULL;
 136        return 0;
 137}
 138
 139int
 140curs507a_new(struct nouveau_drm *drm, int head, s32 oclass,
 141             struct nv50_wndw **pwndw)
 142{
 143        return curs507a_new_(&curs507a, drm, head, oclass,
 144                             0x00000001 << (head * 8), pwndw);
 145}
 146