LXR linux/drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigk104.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 "hdmi.h"
  25
  26void
  27gk104_hdmi_ctrl(struct nvkm_ior *ior, int head, bool enable, u8 max_ac_packet,
  28                u8 rekey, u8 *avi, u8 avi_size, u8 *vendor, u8 vendor_size)
  29{
  30        struct nvkm_device *device = ior->disp->engine.subdev.device;
  31        const u32 ctrl = 0x40000000 * enable |
  32                         max_ac_packet << 16 |
  33                         rekey;
  34        const u32 hoff = head * 0x800;
  35        const u32 hdmi = head * 0x400;
  36        struct packed_hdmi_infoframe avi_infoframe;
  37        struct packed_hdmi_infoframe vendor_infoframe;
  38
  39        pack_hdmi_infoframe(&avi_infoframe, avi, avi_size);
  40        pack_hdmi_infoframe(&vendor_infoframe, vendor, vendor_size);
  41
  42        if (!(ctrl & 0x40000000)) {
  43                nvkm_mask(device, 0x616798 + hoff, 0x40000000, 0x00000000);
  44                nvkm_mask(device, 0x690100 + hdmi, 0x00000001, 0x00000000);
  45                nvkm_mask(device, 0x6900c0 + hdmi, 0x00000001, 0x00000000);
  46                nvkm_mask(device, 0x690000 + hdmi, 0x00000001, 0x00000000);
  47                return;
  48        }
  49
  50        /* AVI InfoFrame */
  51        nvkm_mask(device, 0x690000 + hdmi, 0x00000001, 0x00000000);
  52        if (avi_size) {
  53                nvkm_wr32(device, 0x690008 + hdmi, avi_infoframe.header);
  54                nvkm_wr32(device, 0x69000c + hdmi, avi_infoframe.subpack0_low);
  55                nvkm_wr32(device, 0x690010 + hdmi, avi_infoframe.subpack0_high);
  56                nvkm_wr32(device, 0x690014 + hdmi, avi_infoframe.subpack1_low);
  57                nvkm_wr32(device, 0x690018 + hdmi, avi_infoframe.subpack1_high);
  58                nvkm_mask(device, 0x690000 + hdmi, 0x00000001, 0x00000001);
  59        }
  60
  61        /* GENERIC(?) / Vendor InfoFrame? */
  62        nvkm_mask(device, 0x690100 + hdmi, 0x00010001, 0x00000000);
  63        if (vendor_size) {
  64                nvkm_wr32(device, 0x690108 + hdmi, vendor_infoframe.header);
  65                nvkm_wr32(device, 0x69010c + hdmi, vendor_infoframe.subpack0_low);
  66                nvkm_wr32(device, 0x690110 + hdmi, vendor_infoframe.subpack0_high);
  67                /* Is there a second (or further?) set of subpack registers here? */
  68                nvkm_mask(device, 0x690100 + hdmi, 0x00000001, 0x00000001);
  69        }
  70
  71
  72        /* ??? InfoFrame? */
  73        nvkm_mask(device, 0x6900c0 + hdmi, 0x00000001, 0x00000000);
  74        nvkm_wr32(device, 0x6900cc + hdmi, 0x00000010);
  75        nvkm_mask(device, 0x6900c0 + hdmi, 0x00000001, 0x00000001);
  76
  77        /* ??? */
  78        nvkm_wr32(device, 0x690080 + hdmi, 0x82000000);
  79
  80        /* HDMI_CTRL */
  81        nvkm_mask(device, 0x616798 + hoff, 0x401f007f, ctrl);
  82}
  83