LXR linux/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
  26void
  27gf119_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}
  83