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/drm_crtc_helper.h>
  28 #include <drm/amdgpu_drm.h>
  29 #include "amdgpu.h"
  30 #include "amdgpu_connectors.h"
  31 #include "amdgpu_display.h"
  32 #include "atom.h"
  33 #include "atombios_encoders.h"
  34
  35 void
  36 amdgpu_link_encoder_connector(struct drm_device *dev)
  37 {
  38         struct amdgpu_device *adev = drm_to_adev(dev);
  39         struct drm_connector *connector;
  40         struct drm_connector_list_iter iter;
  41         struct amdgpu_connector *amdgpu_connector;
  42         struct drm_encoder *encoder;
  43         struct amdgpu_encoder *amdgpu_encoder;
  44
  45         drm_connector_list_iter_begin(dev, &iter);
  46         /* walk the list and link encoders to connectors */
  47         drm_for_each_connector_iter(connector, &iter) {
  48                 amdgpu_connector = to_amdgpu_connector(connector);
  49                 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
  50                         amdgpu_encoder = to_amdgpu_encoder(encoder);
  51                         if (amdgpu_encoder->devices & amdgpu_connector->devices) {
  52                                 drm_connector_attach_encoder(connector, encoder);
  53                                 if (amdgpu_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
  54                                         amdgpu_atombios_encoder_init_backlight(amdgpu_encoder, connector);
  55                                         adev->mode_info.bl_encoder = amdgpu_encoder;
  56                                 }
  57                         }
  58                 }
  59         }
  60         drm_connector_list_iter_end(&iter);
  61 }
  62
  63 void amdgpu_encoder_set_active_device(struct drm_encoder *encoder)
  64 {
  65         struct drm_device *dev = encoder->dev;
  66         struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
  67         struct drm_connector *connector;
  68         struct drm_connector_list_iter iter;
  69
  70         drm_connector_list_iter_begin(dev, &iter);
  71         drm_for_each_connector_iter(connector, &iter) {
  72                 if (connector->encoder == encoder) {
  73                         struct amdgpu_connector *amdgpu_connector = to_amdgpu_connector(connector);
  74                         amdgpu_encoder->active_device = amdgpu_encoder->devices & amdgpu_connector->devices;
  75                         DRM_DEBUG_KMS("setting active device to %08x from %08x %08x for encoder %d\n",
  76                                   amdgpu_encoder->active_device, amdgpu_encoder->devices,
  77                                   amdgpu_connector->devices, encoder->encoder_type);
  78                 }
  79         }
  80         drm_connector_list_iter_end(&iter);
  81 }
  82
  83 struct drm_connector *
  84 amdgpu_get_connector_for_encoder(struct drm_encoder *encoder)
  85 {
  86         struct drm_device *dev = encoder->dev;
  87         struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
  88         struct drm_connector *connector, *found = NULL;
  89         struct drm_connector_list_iter iter;
  90         struct amdgpu_connector *amdgpu_connector;
  91
  92         drm_connector_list_iter_begin(dev, &iter);
  93         drm_for_each_connector_iter(connector, &iter) {
  94                 amdgpu_connector = to_amdgpu_connector(connector);
  95                 if (amdgpu_encoder->active_device & amdgpu_connector->devices) {
  96                         found = connector;
  97                         break;
  98                 }
  99         }
 100         drm_connector_list_iter_end(&iter);
 101         return found;
 102 }
 103
 104 struct drm_connector *
 105 amdgpu_get_connector_for_encoder_init(struct drm_encoder *encoder)
 106 {
 107         struct drm_device *dev = encoder->dev;
 108         struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
 109         struct drm_connector *connector, *found = NULL;
 110         struct drm_connector_list_iter iter;
 111         struct amdgpu_connector *amdgpu_connector;
 112
 113         drm_connector_list_iter_begin(dev, &iter);
 114         drm_for_each_connector_iter(connector, &iter) {
 115                 amdgpu_connector = to_amdgpu_connector(connector);
 116                 if (amdgpu_encoder->devices & amdgpu_connector->devices) {
 117                         found = connector;
 118                         break;
 119                 }
 120         }
 121         drm_connector_list_iter_end(&iter);
 122         return found;
 123 }
 124
 125 struct drm_encoder *amdgpu_get_external_encoder(struct drm_encoder *encoder)
 126 {
 127         struct drm_device *dev = encoder->dev;
 128         struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
 129         struct drm_encoder *other_encoder;
 130         struct amdgpu_encoder *other_amdgpu_encoder;
 131
 132         if (amdgpu_encoder->is_ext_encoder)
 133                 return NULL;
 134
 135         list_for_each_entry(other_encoder, &dev->mode_config.encoder_list, head) {
 136                 if (other_encoder == encoder)
 137                         continue;
 138                 other_amdgpu_encoder = to_amdgpu_encoder(other_encoder);
 139                 if (other_amdgpu_encoder->is_ext_encoder &&
 140                     (amdgpu_encoder->devices & other_amdgpu_encoder->devices))
 141                         return other_encoder;
 142         }
 143         return NULL;
 144 }
 145
 146 u16 amdgpu_encoder_get_dp_bridge_encoder_id(struct drm_encoder *encoder)
 147 {
 148         struct drm_encoder *other_encoder = amdgpu_get_external_encoder(encoder);
 149
 150         if (other_encoder) {
 151                 struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(other_encoder);
 152
 153                 switch (amdgpu_encoder->encoder_id) {
 154                 case ENCODER_OBJECT_ID_TRAVIS:
 155                 case ENCODER_OBJECT_ID_NUTMEG:
 156                         return amdgpu_encoder->encoder_id;
 157                 default:
 158                         return ENCODER_OBJECT_ID_NONE;
 159                 }
 160         }
 161         return ENCODER_OBJECT_ID_NONE;
 162 }
 163
 164 void amdgpu_panel_mode_fixup(struct drm_encoder *encoder,
 165                              struct drm_display_mode *adjusted_mode)
 166 {
 167         struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
 168         struct drm_display_mode *native_mode = &amdgpu_encoder->native_mode;
 169         unsigned hblank = native_mode->htotal - native_mode->hdisplay;
 170         unsigned vblank = native_mode->vtotal - native_mode->vdisplay;
 171         unsigned hover = native_mode->hsync_start - native_mode->hdisplay;
 172         unsigned vover = native_mode->vsync_start - native_mode->vdisplay;
 173         unsigned hsync_width = native_mode->hsync_end - native_mode->hsync_start;
 174         unsigned vsync_width = native_mode->vsync_end - native_mode->vsync_start;
 175
 176         adjusted_mode->clock = native_mode->clock;
 177         adjusted_mode->flags = native_mode->flags;
 178
 179         adjusted_mode->hdisplay = native_mode->hdisplay;
 180         adjusted_mode->vdisplay = native_mode->vdisplay;
 181
 182         adjusted_mode->htotal = native_mode->hdisplay + hblank;
 183         adjusted_mode->hsync_start = native_mode->hdisplay + hover;
 184         adjusted_mode->hsync_end = adjusted_mode->hsync_start + hsync_width;
 185
 186         adjusted_mode->vtotal = native_mode->vdisplay + vblank;
 187         adjusted_mode->vsync_start = native_mode->vdisplay + vover;
 188         adjusted_mode->vsync_end = adjusted_mode->vsync_start + vsync_width;
 189
 190         drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V);
 191
 192         adjusted_mode->crtc_hdisplay = native_mode->hdisplay;
 193         adjusted_mode->crtc_vdisplay = native_mode->vdisplay;
 194
 195         adjusted_mode->crtc_htotal = adjusted_mode->crtc_hdisplay + hblank;
 196         adjusted_mode->crtc_hsync_start = adjusted_mode->crtc_hdisplay + hover;
 197         adjusted_mode->crtc_hsync_end = adjusted_mode->crtc_hsync_start + hsync_width;
 198
 199         adjusted_mode->crtc_vtotal = adjusted_mode->crtc_vdisplay + vblank;
 200         adjusted_mode->crtc_vsync_start = adjusted_mode->crtc_vdisplay + vover;
 201         adjusted_mode->crtc_vsync_end = adjusted_mode->crtc_vsync_start + vsync_width;
 202
 203 }
 204
 205 bool amdgpu_dig_monitor_is_duallink(struct drm_encoder *encoder,
 206                                     u32 pixel_clock)
 207 {
 208         struct drm_connector *connector;
 209         struct amdgpu_connector *amdgpu_connector;
 210         struct amdgpu_connector_atom_dig *dig_connector;
 211
 212         connector = amdgpu_get_connector_for_encoder(encoder);
 213         /* if we don't have an active device yet, just use one of
 214          * the connectors tied to the encoder.
 215          */
 216         if (!connector)
 217                 connector = amdgpu_get_connector_for_encoder_init(encoder);
 218         amdgpu_connector = to_amdgpu_connector(connector);
 219
 220         switch (connector->connector_type) {
 221         case DRM_MODE_CONNECTOR_DVII:
 222         case DRM_MODE_CONNECTOR_HDMIB:
 223                 if (amdgpu_connector->use_digital) {
 224                         /* HDMI 1.3 supports up to 340 Mhz over single link */
 225                         if (drm_detect_hdmi_monitor(amdgpu_connector_edid(connector))) {
 226                                 if (pixel_clock > 340000)
 227                                         return true;
 228                                 else
 229                                         return false;
 230                         } else {
 231                                 if (pixel_clock > 165000)
 232                                         return true;
 233                                 else
 234                                         return false;
 235                         }
 236                 } else
 237                         return false;
 238         case DRM_MODE_CONNECTOR_DVID:
 239         case DRM_MODE_CONNECTOR_HDMIA:
 240         case DRM_MODE_CONNECTOR_DisplayPort:
 241                 dig_connector = amdgpu_connector->con_priv;
 242                 if ((dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
 243                     (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP))
 244                         return false;
 245                 else {
 246                         /* HDMI 1.3 supports up to 340 Mhz over single link */
 247                         if (drm_detect_hdmi_monitor(amdgpu_connector_edid(connector))) {
 248                                 if (pixel_clock > 340000)
 249                                         return true;
 250                                 else
 251                                         return false;
 252                         } else {
 253                                 if (pixel_clock > 165000)
 254                                         return true;
 255                                 else
 256                                         return false;
 257                         }
 258                 }
 259         default:
 260                 return false;
 261         }
 262 }