drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigf119.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 "hdmi.h"
  25
  26 void
  27 gf119_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         struct packed_hdmi_infoframe avi_infoframe;
  36         struct packed_hdmi_infoframe vendor_infoframe;
  37
  38         pack_hdmi_infoframe(&avi_infoframe, avi, avi_size);
  39         pack_hdmi_infoframe(&vendor_infoframe, vendor, vendor_size);
  40
  41         if (!(ctrl & 0x40000000)) {
  42                 nvkm_mask(device, 0x616798 + hoff, 0x40000000, 0x00000000);
  43                 nvkm_mask(device, 0x616730 + hoff, 0x00000001, 0x00000000);
  44                 nvkm_mask(device, 0x6167a4 + hoff, 0x00000001, 0x00000000);
  45                 nvkm_mask(device, 0x616714 + hoff, 0x00000001, 0x00000000);
  46                 return;
  47         }
  48
  49         /* AVI InfoFrame */
  50         nvkm_mask(device, 0x616714 + hoff, 0x00000001, 0x00000000);
  51         if (avi_size) {
  52                 nvkm_wr32(device, 0x61671c + hoff, avi_infoframe.header);
  53                 nvkm_wr32(device, 0x616720 + hoff, avi_infoframe.subpack0_low);
  54                 nvkm_wr32(device, 0x616724 + hoff, avi_infoframe.subpack0_high);
  55                 nvkm_wr32(device, 0x616728 + hoff, avi_infoframe.subpack1_low);
  56                 nvkm_wr32(device, 0x61672c + hoff, avi_infoframe.subpack1_high);
  57                 nvkm_mask(device, 0x616714 + hoff, 0x00000001, 0x00000001);
  58         }
  59
  60         /* GENERIC(?) / Vendor InfoFrame? */
  61         nvkm_mask(device, 0x616730 + hoff, 0x00010001, 0x00010000);
  62         if (vendor_size) {
  63                 /*
  64                  * These appear to be the audio infoframe registers,
  65                  * but no other set of infoframe registers has yet
  66                  * been found.
  67                  */
  68                 nvkm_wr32(device, 0x616738 + hoff, vendor_infoframe.header);
  69                 nvkm_wr32(device, 0x61673c + hoff, vendor_infoframe.subpack0_low);
  70                 nvkm_wr32(device, 0x616740 + hoff, vendor_infoframe.subpack0_high);
  71                 /* Is there a second (or further?) set of subpack registers here? */
  72                 nvkm_mask(device, 0x616730 + hoff, 0x00000001, 0x00000001);
  73         }
  74
  75         /* ??? InfoFrame? */
  76         nvkm_mask(device, 0x6167a4 + hoff, 0x00000001, 0x00000000);
  77         nvkm_wr32(device, 0x6167ac + hoff, 0x00000010);
  78         nvkm_mask(device, 0x6167a4 + hoff, 0x00000001, 0x00000001);
  79
  80         /* HDMI_CTRL */
  81         nvkm_mask(device, 0x616798 + hoff, 0x401f007f, ctrl);
  82 }