LXR linux/drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.c

   1/*
   2 * Copyright 2014 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 "outp.h"
  25
  26#include <subdev/bios.h>
  27#include <subdev/bios/dcb.h>
  28#include <subdev/i2c.h>
  29
  30void
  31nvkm_output_fini(struct nvkm_output *outp)
  32{
  33        if (outp->func->fini)
  34                outp->func->fini(outp);
  35}
  36
  37void
  38nvkm_output_init(struct nvkm_output *outp)
  39{
  40        if (outp->func->init)
  41                outp->func->init(outp);
  42}
  43
  44void
  45nvkm_output_del(struct nvkm_output **poutp)
  46{
  47        struct nvkm_output *outp = *poutp;
  48        if (outp && !WARN_ON(!outp->func)) {
  49                if (outp->func->dtor)
  50                        *poutp = outp->func->dtor(outp);
  51                kfree(*poutp);
  52                *poutp = NULL;
  53        }
  54}
  55
  56void
  57nvkm_output_ctor(const struct nvkm_output_func *func, struct nvkm_disp *disp,
  58                 int index, struct dcb_output *dcbE, struct nvkm_output *outp)
  59{
  60        struct nvkm_i2c *i2c = disp->engine.subdev.device->i2c;
  61
  62        outp->func = func;
  63        outp->disp = disp;
  64        outp->index = index;
  65        outp->info = *dcbE;
  66        outp->i2c = nvkm_i2c_bus_find(i2c, dcbE->i2c_index);
  67        outp->or = ffs(outp->info.or) - 1;
  68
  69        OUTP_DBG(outp, "type %02x loc %d or %d link %d con %x "
  70                       "edid %x bus %d head %x",
  71                 outp->info.type, outp->info.location, outp->info.or,
  72                 outp->info.type >= 2 ? outp->info.sorconf.link : 0,
  73                 outp->info.connector, outp->info.i2c_index,
  74                 outp->info.bus, outp->info.heads);
  75}
  76
  77int
  78nvkm_output_new_(const struct nvkm_output_func *func,
  79                 struct nvkm_disp *disp, int index, struct dcb_output *dcbE,
  80                 struct nvkm_output **poutp)
  81{
  82        if (!(*poutp = kzalloc(sizeof(**poutp), GFP_KERNEL)))
  83                return -ENOMEM;
  84
  85        nvkm_output_ctor(func, disp, index, dcbE, *poutp);
  86        return 0;
  87}
  88