LXR linux/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
  29u32
  30nvkm_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
  37int
  38nvkm_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 khz)
  39{
  40        return init->func->pll_set(init, type, khz);
  41}
  42
  43void
  44nvkm_devinit_meminit(struct nvkm_devinit *init)
  45{
  46        if (init->func->meminit)
  47                init->func->meminit(init);
  48}
  49
  50u64
  51nvkm_devinit_disable(struct nvkm_devinit *init)
  52{
  53        if (init && init->func->disable)
  54                return init->func->disable(init);
  55        return 0;
  56}
  57
  58int
  59nvkm_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
  68static int
  69nvkm_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
  78static int
  79nvkm_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
  97static int
  98nvkm_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
 106static void *
 107nvkm_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
 120static const struct nvkm_subdev_func
 121nvkm_devinit = {
 122        .dtor = nvkm_devinit_dtor,
 123        .preinit = nvkm_devinit_preinit,
 124        .init = nvkm_devinit_init,
 125        .fini = nvkm_devinit_fini,
 126};
 127
 128void
 129nvkm_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}
 137