LXR linux/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gf100.c

   1/*
   2 * Copyright 2013 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 "nv50.h"
  25
  26#include <subdev/bios.h>
  27#include <subdev/bios/init.h>
  28#include <subdev/bios/pll.h>
  29#include <subdev/clk/pll.h>
  30
  31int
  32gf100_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 freq)
  33{
  34        struct nvkm_subdev *subdev = &init->subdev;
  35        struct nvkm_device *device = subdev->device;
  36        struct nvbios_pll info;
  37        int N, fN, M, P;
  38        int ret;
  39
  40        ret = nvbios_pll_parse(device->bios, type, &info);
  41        if (ret)
  42                return ret;
  43
  44        ret = gt215_pll_calc(subdev, &info, freq, &N, &fN, &M, &P);
  45        if (ret < 0)
  46                return ret;
  47
  48        switch (info.type) {
  49        case PLL_VPLL0:
  50        case PLL_VPLL1:
  51        case PLL_VPLL2:
  52        case PLL_VPLL3:
  53                nvkm_mask(device, info.reg + 0x0c, 0x00000000, 0x00000100);
  54                nvkm_wr32(device, info.reg + 0x04, (P << 16) | (N << 8) | M);
  55                nvkm_wr32(device, info.reg + 0x10, fN << 16);
  56                break;
  57        default:
  58                nvkm_warn(subdev, "%08x/%dKhz unimplemented\n", type, freq);
  59                ret = -EINVAL;
  60                break;
  61        }
  62
  63        return ret;
  64}
  65
  66static u64
  67gf100_devinit_disable(struct nvkm_devinit *init)
  68{
  69        struct nvkm_device *device = init->subdev.device;
  70        u32 r022500 = nvkm_rd32(device, 0x022500);
  71        u64 disable = 0ULL;
  72
  73        if (r022500 & 0x00000001)
  74                nvkm_subdev_disable(device, NVKM_ENGINE_DISP, 0);
  75
  76        if (r022500 & 0x00000002) {
  77                nvkm_subdev_disable(device, NVKM_ENGINE_MSPDEC, 0);
  78                nvkm_subdev_disable(device, NVKM_ENGINE_MSPPP, 0);
  79        }
  80
  81        if (r022500 & 0x00000004)
  82                nvkm_subdev_disable(device, NVKM_ENGINE_MSVLD, 0);
  83        if (r022500 & 0x00000008)
  84                nvkm_subdev_disable(device, NVKM_ENGINE_MSENC, 0);
  85        if (r022500 & 0x00000100)
  86                nvkm_subdev_disable(device, NVKM_ENGINE_CE, 0);
  87        if (r022500 & 0x00000200)
  88                nvkm_subdev_disable(device, NVKM_ENGINE_CE, 1);
  89
  90        return disable;
  91}
  92
  93void
  94gf100_devinit_preinit(struct nvkm_devinit *base)
  95{
  96        struct nv50_devinit *init = nv50_devinit(base);
  97        struct nvkm_subdev *subdev = &init->base.subdev;
  98        struct nvkm_device *device = subdev->device;
  99
 100        /*
 101         * This bit is set by devinit, and flips back to 0 on suspend. We
 102         * can use it as a reliable way to know whether we should run devinit.
 103         */
 104        base->post = ((nvkm_rd32(device, 0x2240c) & BIT(1)) == 0);
 105}
 106
 107static const struct nvkm_devinit_func
 108gf100_devinit = {
 109        .preinit = gf100_devinit_preinit,
 110        .init = nv50_devinit_init,
 111        .post = nv04_devinit_post,
 112        .pll_set = gf100_devinit_pll_set,
 113        .disable = gf100_devinit_disable,
 114};
 115
 116int
 117gf100_devinit_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
 118                  struct nvkm_devinit **pinit)
 119{
 120        return nv50_devinit_new_(&gf100_devinit, device, type, inst, pinit);
 121}
 122