drivers/gpu/drm/nouveau/nvkm/subdev/devinit/base.c

   1 /*
   2  * Copyright 2012 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
  23  */
  24 #include "priv.h"
  25
  26 #include <core/option.h>
  27 #include <subdev/vga.h>
  28
  29 u32
  30 nvkm_devinit_mmio(struct nvkm_devinit *init, u32 addr)
  31 {
  32         if (init->func->mmio)
  33                 addr = init->func->mmio(init, addr);
  34         return addr;
  35 }
  36
  37 int
  38 nvkm_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 khz)
  39 {
  40         return init->func->pll_set(init, type, khz);
  41 }
  42
  43 void
  44 nvkm_devinit_meminit(struct nvkm_devinit *init)
  45 {
  46         if (init->func->meminit)
  47                 init->func->meminit(init);
  48 }
  49
  50 u64
  51 nvkm_devinit_disable(struct nvkm_devinit *init)
  52 {
  53         if (init && init->func->disable)
  54                 return init->func->disable(init);
  55         return 0;
  56 }
  57
  58 int
  59 nvkm_devinit_post(struct nvkm_devinit *init, u64 *disable)
  60 {
  61         int ret = 0;
  62         if (init && init->func->post)
  63                 ret = init->func->post(init, init->post);
  64         *disable = nvkm_devinit_disable(init);
  65         return ret;
  66 }
  67
  68 static int
  69 nvkm_devinit_fini(struct nvkm_subdev *subdev, bool suspend)
  70 {
  71         struct nvkm_devinit *init = nvkm_devinit(subdev);
  72         /* force full reinit on resume */
  73         if (suspend)
  74                 init->post = true;
  75         return 0;
  76 }
  77
  78 static int
  79 nvkm_devinit_preinit(struct nvkm_subdev *subdev)
  80 {
  81         struct nvkm_devinit *init = nvkm_devinit(subdev);
  82
  83         if (init->func->preinit)
  84                 init->func->preinit(init);
  85
  86         /* Override the post flag during the first call if NvForcePost is set */
  87         if (init->force_post) {
  88                 init->post = init->force_post;
  89                 init->force_post = false;
  90         }
  91
  92         /* unlock the extended vga crtc regs */
  93         nvkm_lockvgac(subdev->device, false);
  94         return 0;
  95 }
  96
  97 static int
  98 nvkm_devinit_init(struct nvkm_subdev *subdev)
  99 {
 100         struct nvkm_devinit *init = nvkm_devinit(subdev);
 101         if (init->func->init)
 102                 init->func->init(init);
 103         return 0;
 104 }
 105
 106 static void *
 107 nvkm_devinit_dtor(struct nvkm_subdev *subdev)
 108 {
 109         struct nvkm_devinit *init = nvkm_devinit(subdev);
 110         void *data = init;
 111
 112         if (init->func->dtor)
 113                 data = init->func->dtor(init);
 114
 115         /* lock crtc regs */
 116         nvkm_lockvgac(subdev->device, true);
 117         return data;
 118 }
 119
 120 static const struct nvkm_subdev_func
 121 nvkm_devinit = {
 122         .dtor = nvkm_devinit_dtor,
 123         .preinit = nvkm_devinit_preinit,
 124         .init = nvkm_devinit_init,
 125         .fini = nvkm_devinit_fini,
 126 };
 127
 128 void
 129 nvkm_devinit_ctor(const struct nvkm_devinit_func *func,
 130                   struct nvkm_device *device, int index,
 131                   struct nvkm_devinit *init)
 132 {
 133         nvkm_subdev_ctor(&nvkm_devinit, device, index, &init->subdev);
 134         init->func = func;
 135         init->force_post = nvkm_boolopt(device->cfgopt, "NvForcePost", false);
 136 }