LXR linux/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
  28void
  29nv50_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
  37static void
  38nv50_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
  46void
  47nv50_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
  66void
  67nv50_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
  87int
  88nv50_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
  96static const struct nvkm_ior_func
  97nv50_sor = {
  98        .state = nv50_sor_state,
  99        .power = nv50_sor_power,
 100        .clock = nv50_sor_clock,
 101};
 102
 103int
 104nv50_sor_new(struct nvkm_disp *disp, int id)
 105{
 106        return nv50_sor_new_(&nv50_sor, disp, id);
 107}
 108