drivers/gpu/drm/amd/amdgpu/amdgpu_encoders.c

   1 /*
   2  * Copyright 2007-8 Advanced Micro Devices, Inc.
   3  * Copyright 2008 Red Hat Inc.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  19  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  21  * OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors: Dave Airlie
  24  *          Alex Deucher
  25  */
  26
  27 #include <drm/amdgpu_drm.h>
  28 #include "amdgpu.h"
  29 #include "amdgpu_connectors.h"
  30 #include "amdgpu_display.h"
  31 #include "atom.h"
  32 #include "atombios_encoders.h"
  33
  34 void
  35 amdgpu_link_encoder_connector(struct drm_device *dev)
  36 {
  37         struct amdgpu_device *adev = drm_to_adev(dev);
  38         struct drm_connector *connector;
  39         struct drm_connector_list_iter iter;
  40         struct amdgpu_connector *amdgpu_connector;
  41         struct drm_encoder *encoder;
  42         struct amdgpu_encoder *amdgpu_encoder;
  43
  44         drm_connector_list_iter_begin(dev, &iter);
  45         /* walk the list and link encoders to connectors */
  46         drm_for_each_connector_iter(connector, &iter) {
  47                 amdgpu_connector = to_amdgpu_connector(connector);
  48                 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
  49                         amdgpu_encoder = to_amdgpu_encoder(encoder);
  50                         if (amdgpu_encoder->devices & amdgpu_connector->devices) {
  51                                 drm_connector_attach_encoder(connector, encoder);
  52                                 if (amdgpu_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
  53                                         amdgpu_atombios_encoder_init_backlight(amdgpu_encoder, connector);
  54                                         adev->mode_info.bl_encoder = amdgpu_encoder;
  55                                 }
  56                         }
  57                 }
  58         }
  59         drm_connector_list_iter_end(&iter);
  60 }
  61
  62 void amdgpu_encoder_set_active_device(struct drm_encoder *encoder)
  63 {
  64         struct drm_device *dev = encoder->dev;
  65         struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
  66         struct drm_connector *connector;
  67         struct drm_connector_list_iter iter;
  68
  69         drm_connector_list_iter_begin(dev, &iter);
  70         drm_for_each_connector_iter(connector, &iter) {
  71                 if (connector->encoder == encoder) {
  72                         struct amdgpu_connector *amdgpu_connector = to_amdgpu_connector(connector);
  73                         amdgpu_encoder->active_device = amdgpu_encoder->devices & amdgpu_connector->devices;
  74                         DRM_DEBUG_KMS("setting active device to %08x from %08x %08x for encoder %d\n",
  75                                   amdgpu_encoder->active_device, amdgpu_encoder->devices,
  76                                   amdgpu_connector->devices, encoder->encoder_type);
  77                 }
  78         }
  79         drm_connector_list_iter_end(&iter);
  80 }
  81
  82 struct drm_connector *
  83 amdgpu_get_connector_for_encoder(struct drm_encoder *encoder)
  84 {
  85         struct drm_device *dev = encoder->dev;
  86         struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
  87         struct drm_connector *connector, *found = NULL;
  88         struct drm_connector_list_iter iter;
  89         struct amdgpu_connector *amdgpu_connector;
  90
  91         drm_connector_list_iter_begin(dev, &iter);
  92         drm_for_each_connector_iter(connector, &iter) {
  93                 amdgpu_connector = to_amdgpu_connector(connector);
  94                 if (amdgpu_encoder->active_device & amdgpu_connector->devices) {
  95                         found = connector;
  96                         break;
  97                 }
  98         }
  99         drm_connector_list_iter_end(&iter);
 100         return found;
 101 }
 102
 103 struct drm_connector *
 104 amdgpu_get_connector_for_encoder_init(struct drm_encoder *encoder)
 105 {
 106         struct drm_device *dev = encoder->dev;
 107         struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
 108         struct drm_connector *connector, *found = NULL;
 109         struct drm_connector_list_iter iter;
 110         struct amdgpu_connector *amdgpu_connector;
 111
 112         drm_connector_list_iter_begin(dev, &iter);
 113         drm_for_each_connector_iter(connector, &iter) {
 114                 amdgpu_connector = to_amdgpu_connector(connector);
 115                 if (amdgpu_encoder->devices & amdgpu_connector->devices) {
 116                         found = connector;
 117                         break;
 118                 }
 119         }
 120         drm_connector_list_iter_end(&iter);
 121         return found;
 122 }
 123
 124 struct drm_encoder *amdgpu_get_external_encoder(struct drm_encoder *encoder)
 125 {
 126         struct drm_device *dev = encoder->dev;
 127         struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
 128         struct drm_encoder *other_encoder;
 129         struct amdgpu_encoder *other_amdgpu_encoder;
 130
 131         if (amdgpu_encoder->is_ext_encoder)
 132                 return NULL;
 133
 134         list_for_each_entry(other_encoder, &dev->mode_config.encoder_list, head) {
 135                 if (other_encoder == encoder)
 136                         continue;
 137                 other_amdgpu_encoder = to_amdgpu_encoder(other_encoder);
 138                 if (other_amdgpu_encoder->is_ext_encoder &&
 139                     (amdgpu_encoder->devices & other_amdgpu_encoder->devices))
 140                         return other_encoder;
 141         }
 142         return NULL;
 143 }
 144
 145 u16 amdgpu_encoder_get_dp_bridge_encoder_id(struct drm_encoder *encoder)
 146 {
 147         struct drm_encoder *other_encoder = amdgpu_get_external_encoder(encoder);
 148
 149         if (other_encoder) {
 150                 struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(other_encoder);
 151
 152                 switch (amdgpu_encoder->encoder_id) {
 153                 case ENCODER_OBJECT_ID_TRAVIS:
 154                 case ENCODER_OBJECT_ID_NUTMEG:
 155                         return amdgpu_encoder->encoder_id;
 156                 default:
 157                         return ENCODER_OBJECT_ID_NONE;
 158                 }
 159         }
 160         return ENCODER_OBJECT_ID_NONE;
 161 }
 162
 163 void amdgpu_panel_mode_fixup(struct drm_encoder *encoder,
 164                              struct drm_display_mode *adjusted_mode)
 165 {
 166         struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
 167         struct drm_display_mode *native_mode = &amdgpu_encoder->native_mode;
 168         unsigned hblank = native_mode->htotal - native_mode->hdisplay;
 169         unsigned vblank = native_mode->vtotal - native_mode->vdisplay;
 170         unsigned hover = native_mode->hsync_start - native_mode->hdisplay;
 171         unsigned vover = native_mode->vsync_start - native_mode->vdisplay;
 172         unsigned hsync_width = native_mode->hsync_end - native_mode->hsync_start;
 173         unsigned vsync_width = native_mode->vsync_end - native_mode->vsync_start;
 174
 175         adjusted_mode->clock = native_mode->clock;
 176         adjusted_mode->flags = native_mode->flags;
 177
 178         adjusted_mode->hdisplay = native_mode->hdisplay;
 179         adjusted_mode->vdisplay = native_mode->vdisplay;
 180
 181         adjusted_mode->htotal = native_mode->hdisplay + hblank;
 182         adjusted_mode->hsync_start = native_mode->hdisplay + hover;
 183         adjusted_mode->hsync_end = adjusted_mode->hsync_start + hsync_width;
 184
 185         adjusted_mode->vtotal = native_mode->vdisplay + vblank;
 186         adjusted_mode->vsync_start = native_mode->vdisplay + vover;
 187         adjusted_mode->vsync_end = adjusted_mode->vsync_start + vsync_width;
 188
 189         drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V);
 190
 191         adjusted_mode->crtc_hdisplay = native_mode->hdisplay;
 192         adjusted_mode->crtc_vdisplay = native_mode->vdisplay;
 193
 194         adjusted_mode->crtc_htotal = adjusted_mode->crtc_hdisplay + hblank;
 195         adjusted_mode->crtc_hsync_start = adjusted_mode->crtc_hdisplay + hover;
 196         adjusted_mode->crtc_hsync_end = adjusted_mode->crtc_hsync_start + hsync_width;
 197
 198         adjusted_mode->crtc_vtotal = adjusted_mode->crtc_vdisplay + vblank;
 199         adjusted_mode->crtc_vsync_start = adjusted_mode->crtc_vdisplay + vover;
 200         adjusted_mode->crtc_vsync_end = adjusted_mode->crtc_vsync_start + vsync_width;
 201
 202 }
 203
 204 bool amdgpu_dig_monitor_is_duallink(struct drm_encoder *encoder,
 205                                     u32 pixel_clock)
 206 {
 207         struct drm_connector *connector;
 208         struct amdgpu_connector *amdgpu_connector;
 209         struct amdgpu_connector_atom_dig *dig_connector;
 210
 211         connector = amdgpu_get_connector_for_encoder(encoder);
 212         /* if we don't have an active device yet, just use one of
 213          * the connectors tied to the encoder.
 214          */
 215         if (!connector)
 216                 connector = amdgpu_get_connector_for_encoder_init(encoder);
 217         amdgpu_connector = to_amdgpu_connector(connector);
 218
 219         switch (connector->connector_type) {
 220         case DRM_MODE_CONNECTOR_DVII:
 221         case DRM_MODE_CONNECTOR_HDMIB:
 222                 if (amdgpu_connector->use_digital) {
 223                         /* HDMI 1.3 supports up to 340 Mhz over single link */
 224                         if (connector->display_info.is_hdmi) {
 225                                 if (pixel_clock > 340000)
 226                                         return true;
 227                                 else
 228                                         return false;
 229                         } else {
 230                                 if (pixel_clock > 165000)
 231                                         return true;
 232                                 else
 233                                         return false;
 234                         }
 235                 } else
 236                         return false;
 237         case DRM_MODE_CONNECTOR_DVID:
 238         case DRM_MODE_CONNECTOR_HDMIA:
 239         case DRM_MODE_CONNECTOR_DisplayPort:
 240                 dig_connector = amdgpu_connector->con_priv;
 241                 if ((dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
 242                     (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP))
 243                         return false;
 244                 else {
 245                         /* HDMI 1.3 supports up to 340 Mhz over single link */
 246                         if (connector->display_info.is_hdmi) {
 247                                 if (pixel_clock > 340000)
 248                                         return true;
 249                                 else
 250                                         return false;
 251                         } else {
 252                                 if (pixel_clock > 165000)
 253                                         return true;
 254                                 else
 255                                         return false;
 256                         }
 257                 }
 258         default:
 259                 return false;
 260         }
 261 }