drivers/gpu/drm/nouveau/nvkm/engine/disp/sornv50.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 "ior.h"
  25
  26 #include <subdev/timer.h>
  27
  28 void
  29 nv50_sor_clock(struct nvkm_ior *sor)
  30 {
  31         struct nvkm_device *device = sor->disp->engine.subdev.device;
  32         const int  div = sor->asy.link == 3;
  33         const u32 soff = nv50_ior_base(sor);
  34         nvkm_mask(device, 0x614300 + soff, 0x00000707, (div << 8) | div);
  35 }
  36
  37 static void
  38 nv50_sor_power_wait(struct nvkm_device *device, u32 soff)
  39 {
  40         nvkm_msec(device, 2000,
  41                 if (!(nvkm_rd32(device, 0x61c004 + soff) & 0x80000000))
  42                         break;
  43         );
  44 }
  45
  46 void
  47 nv50_sor_power(struct nvkm_ior *sor, bool normal, bool pu,
  48                bool data, bool vsync, bool hsync)
  49 {
  50         struct nvkm_device *device = sor->disp->engine.subdev.device;
  51         const u32  soff = nv50_ior_base(sor);
  52         const u32 shift = normal ? 0 : 16;
  53         const u32 state = 0x80000000 | (0x00000001 * !!pu) << shift;
  54         const u32 field = 0x80000000 | (0x00000001 << shift);
  55
  56         nv50_sor_power_wait(device, soff);
  57         nvkm_mask(device, 0x61c004 + soff, field, state);
  58         nv50_sor_power_wait(device, soff);
  59
  60         nvkm_msec(device, 2000,
  61                 if (!(nvkm_rd32(device, 0x61c030 + soff) & 0x10000000))
  62                         break;
  63         );
  64 }
  65
  66 void
  67 nv50_sor_state(struct nvkm_ior *sor, struct nvkm_ior_state *state)
  68 {
  69         struct nvkm_device *device = sor->disp->engine.subdev.device;
  70         const u32 coff = sor->id * 8 + (state == &sor->arm) * 4;
  71         u32 ctrl = nvkm_rd32(device, 0x610b70 + coff);
  72
  73         state->proto_evo = (ctrl & 0x00000f00) >> 8;
  74         switch (state->proto_evo) {
  75         case 0: state->proto = LVDS; state->link = 1; break;
  76         case 1: state->proto = TMDS; state->link = 1; break;
  77         case 2: state->proto = TMDS; state->link = 2; break;
  78         case 5: state->proto = TMDS; state->link = 3; break;
  79         default:
  80                 state->proto = UNKNOWN;
  81                 break;
  82         }
  83
  84         state->head = ctrl & 0x00000003;
  85 }
  86
  87 int
  88 nv50_sor_new_(const struct nvkm_ior_func *func, struct nvkm_disp *disp, int id)
  89 {
  90         struct nvkm_device *device = disp->engine.subdev.device;
  91         if (!(nvkm_rd32(device, 0x610184) & (0x01000000 << id)))
  92                 return 0;
  93         return nvkm_ior_new_(func, disp, SOR, id);
  94 }
  95
  96 static const struct nvkm_ior_func
  97 nv50_sor = {
  98         .state = nv50_sor_state,
  99         .power = nv50_sor_power,
 100         .clock = nv50_sor_clock,
 101 };
 102
 103 int
 104 nv50_sor_new(struct nvkm_disp *disp, int id)
 105 {
 106         return nv50_sor_new_(&nv50_sor, disp, id);
 107 }