drivers/gpu/drm/nouveau/nvkm/engine/disp/piornv50.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 "outpdp.h"
  25 #include "nv50.h"
  26
  27 #include <core/client.h>
  28 #include <subdev/i2c.h>
  29 #include <subdev/timer.h>
  30
  31 #include <nvif/class.h>
  32 #include <nvif/unpack.h>
  33
  34 int
  35 nv50_pior_power(NV50_DISP_MTHD_V1)
  36 {
  37         struct nvkm_device *device = disp->base.engine.subdev.device;
  38         const u32 soff = outp->or * 0x800;
  39         union {
  40                 struct nv50_disp_pior_pwr_v0 v0;
  41         } *args = data;
  42         u32 ctrl, type;
  43         int ret;
  44
  45         nvif_ioctl(object, "disp pior pwr size %d\n", size);
  46         if (nvif_unpack(args->v0, 0, 0, false)) {
  47                 nvif_ioctl(object, "disp pior pwr vers %d state %d type %x\n",
  48                            args->v0.version, args->v0.state, args->v0.type);
  49                 if (args->v0.type > 0x0f)
  50                         return -EINVAL;
  51                 ctrl = !!args->v0.state;
  52                 type = args->v0.type;
  53         } else
  54                 return ret;
  55
  56         nvkm_msec(device, 2000,
  57                 if (!(nvkm_rd32(device, 0x61e004 + soff) & 0x80000000))
  58                         break;
  59         );
  60         nvkm_mask(device, 0x61e004 + soff, 0x80000101, 0x80000000 | ctrl);
  61         nvkm_msec(device, 2000,
  62                 if (!(nvkm_rd32(device, 0x61e004 + soff) & 0x80000000))
  63                         break;
  64         );
  65         disp->pior.type[outp->or] = type;
  66         return 0;
  67 }
  68
  69 /******************************************************************************
  70  * TMDS
  71  *****************************************************************************/
  72 static const struct nvkm_output_func
  73 nv50_pior_output_func = {
  74 };
  75
  76 int
  77 nv50_pior_output_new(struct nvkm_disp *disp, int index,
  78                      struct dcb_output *dcbE, struct nvkm_output **poutp)
  79 {
  80         return nvkm_output_new_(&nv50_pior_output_func, disp,
  81                                 index, dcbE, poutp);
  82 }
  83
  84 /******************************************************************************
  85  * DisplayPort
  86  *****************************************************************************/
  87 static int
  88 nv50_pior_output_dp_pattern(struct nvkm_output_dp *outp, int pattern)
  89 {
  90         return 0;
  91 }
  92
  93 static int
  94 nv50_pior_output_dp_lnk_pwr(struct nvkm_output_dp *outp, int nr)
  95 {
  96         return 0;
  97 }
  98
  99 static int
 100 nv50_pior_output_dp_lnk_ctl(struct nvkm_output_dp *outp,
 101                             int nr, int bw, bool ef)
 102 {
 103         int ret = nvkm_i2c_aux_lnk_ctl(outp->aux, nr, bw, ef);
 104         if (ret)
 105                 return ret;
 106         return 1;
 107 }
 108
 109 static const struct nvkm_output_dp_func
 110 nv50_pior_output_dp_func = {
 111         .pattern = nv50_pior_output_dp_pattern,
 112         .lnk_pwr = nv50_pior_output_dp_lnk_pwr,
 113         .lnk_ctl = nv50_pior_output_dp_lnk_ctl,
 114 };
 115
 116 int
 117 nv50_pior_dp_new(struct nvkm_disp *disp, int index, struct dcb_output *dcbE,
 118                  struct nvkm_output **poutp)
 119 {
 120         struct nvkm_i2c *i2c = disp->engine.subdev.device->i2c;
 121         struct nvkm_i2c_aux *aux =
 122                 nvkm_i2c_aux_find(i2c, NVKM_I2C_AUX_EXT(dcbE->extdev));
 123         struct nvkm_output_dp *outp;
 124
 125         if (!(outp = kzalloc(sizeof(*outp), GFP_KERNEL)))
 126                 return -ENOMEM;
 127         *poutp = &outp->base;
 128
 129         return nvkm_output_dp_ctor(&nv50_pior_output_dp_func, disp,
 130                                    index, dcbE, aux, outp);
 131 }