drivers/gpu/drm/nouveau/nvkm/engine/disp/dacgf119.c

   1 /*
   2  * Copyright 2017 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 #include "ior.h"
  23
  24 static void
  25 gf119_dac_clock(struct nvkm_ior *dac)
  26 {
  27         struct nvkm_device *device = dac->disp->engine.subdev.device;
  28         const u32 doff = nv50_ior_base(dac);
  29         nvkm_mask(device, 0x612280 + doff, 0x07070707, 0x00000000);
  30 }
  31
  32 static void
  33 gf119_dac_state(struct nvkm_ior *dac, struct nvkm_ior_state *state)
  34 {
  35         struct nvkm_device *device = dac->disp->engine.subdev.device;
  36         const u32 coff = (state == &dac->asy) * 0x20000 + dac->id * 0x20;
  37         u32 ctrl = nvkm_rd32(device, 0x640180 + coff);
  38
  39         state->proto_evo = (ctrl & 0x00000f00) >> 8;
  40         switch (state->proto_evo) {
  41         case 0: state->proto = CRT; break;
  42         default:
  43                 state->proto = UNKNOWN;
  44                 break;
  45         }
  46
  47         state->head = ctrl & 0x0000000f;
  48 }
  49
  50 static const struct nvkm_ior_func
  51 gf119_dac = {
  52         .state = gf119_dac_state,
  53         .power = nv50_dac_power,
  54         .sense = nv50_dac_sense,
  55         .clock = gf119_dac_clock,
  56 };
  57
  58 int
  59 gf119_dac_new(struct nvkm_disp *disp, int id)
  60 {
  61         struct nvkm_device *device = disp->engine.subdev.device;
  62         if (!(nvkm_rd32(device, 0x612004) & (0x00000010 << id)))
  63                 return 0;
  64         return nvkm_ior_new_(&gf119_dac, disp, DAC, id);
  65 }