drivers/gpu/drm/nouveau/nv04_display.c

   1 /*
   2  * Copyright 2009 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  * Author: Ben Skeggs
  23  */
  24
  25 #include "drmP.h"
  26 #include "drm.h"
  27 #include "drm_crtc_helper.h"
  28
  29 #include "nouveau_drv.h"
  30 #include "nouveau_fb.h"
  31 #include "nouveau_hw.h"
  32 #include "nouveau_encoder.h"
  33 #include "nouveau_connector.h"
  34
  35 #define MULTIPLE_ENCODERS(e) (e & (e - 1))
  36
  37 static void
  38 nv04_display_store_initial_head_owner(struct drm_device *dev)
  39 {
  40         struct drm_nouveau_private *dev_priv = dev->dev_private;
  41
  42         if (dev_priv->chipset != 0x11) {
  43                 dev_priv->crtc_owner = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_44);
  44                 goto ownerknown;
  45         }
  46
  47         /* reading CR44 is broken on nv11, so we attempt to infer it */
  48         if (nvReadMC(dev, NV_PBUS_DEBUG_1) & (1 << 28)) /* heads tied, restore both */
  49                 dev_priv->crtc_owner = 0x4;
  50         else {
  51                 uint8_t slaved_on_A, slaved_on_B;
  52                 bool tvA = false;
  53                 bool tvB = false;
  54
  55                 NVLockVgaCrtcs(dev, false);
  56
  57                 slaved_on_B = NVReadVgaCrtc(dev, 1, NV_CIO_CRE_PIXEL_INDEX) &
  58                                                                         0x80;
  59                 if (slaved_on_B)
  60                         tvB = !(NVReadVgaCrtc(dev, 1, NV_CIO_CRE_LCD__INDEX) &
  61                                         MASK(NV_CIO_CRE_LCD_LCD_SELECT));
  62
  63                 slaved_on_A = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_PIXEL_INDEX) &
  64                                                                         0x80;
  65                 if (slaved_on_A)
  66                         tvA = !(NVReadVgaCrtc(dev, 0, NV_CIO_CRE_LCD__INDEX) &
  67                                         MASK(NV_CIO_CRE_LCD_LCD_SELECT));
  68
  69                 NVLockVgaCrtcs(dev, true);
  70
  71                 if (slaved_on_A && !tvA)
  72                         dev_priv->crtc_owner = 0x0;
  73                 else if (slaved_on_B && !tvB)
  74                         dev_priv->crtc_owner = 0x3;
  75                 else if (slaved_on_A)
  76                         dev_priv->crtc_owner = 0x0;
  77                 else if (slaved_on_B)
  78                         dev_priv->crtc_owner = 0x3;
  79                 else
  80                         dev_priv->crtc_owner = 0x0;
  81         }
  82
  83 ownerknown:
  84         NV_INFO(dev, "Initial CRTC_OWNER is %d\n", dev_priv->crtc_owner);
  85
  86         /* we need to ensure the heads are not tied henceforth, or reading any
  87          * 8 bit reg on head B will fail
  88          * setting a single arbitrary head solves that */
  89         NVSetOwner(dev, 0);
  90 }
  91
  92 int
  93 nv04_display_create(struct drm_device *dev)
  94 {
  95         struct drm_nouveau_private *dev_priv = dev->dev_private;
  96         struct dcb_table *dcb = &dev_priv->vbios.dcb;
  97         struct drm_connector *connector, *ct;
  98         struct drm_encoder *encoder;
  99         struct drm_crtc *crtc;
 100         int i, ret;
 101
 102         NV_DEBUG_KMS(dev, "\n");
 103
 104         if (nv_two_heads(dev))
 105                 nv04_display_store_initial_head_owner(dev);
 106         nouveau_hw_save_vga_fonts(dev, 1);
 107
 108         drm_mode_config_init(dev);
 109         drm_mode_create_scaling_mode_property(dev);
 110         drm_mode_create_dithering_property(dev);
 111
 112         dev->mode_config.funcs = (void *)&nouveau_mode_config_funcs;
 113
 114         dev->mode_config.min_width = 0;
 115         dev->mode_config.min_height = 0;
 116         switch (dev_priv->card_type) {
 117         case NV_04:
 118                 dev->mode_config.max_width = 2048;
 119                 dev->mode_config.max_height = 2048;
 120                 break;
 121         default:
 122                 dev->mode_config.max_width = 4096;
 123                 dev->mode_config.max_height = 4096;
 124                 break;
 125         }
 126
 127         dev->mode_config.fb_base = dev_priv->fb_phys;
 128
 129         nv04_crtc_create(dev, 0);
 130         if (nv_two_heads(dev))
 131                 nv04_crtc_create(dev, 1);
 132
 133         for (i = 0; i < dcb->entries; i++) {
 134                 struct dcb_entry *dcbent = &dcb->entry[i];
 135
 136                 connector = nouveau_connector_create(dev, dcbent->connector);
 137                 if (IS_ERR(connector))
 138                         continue;
 139
 140                 switch (dcbent->type) {
 141                 case OUTPUT_ANALOG:
 142                         ret = nv04_dac_create(connector, dcbent);
 143                         break;
 144                 case OUTPUT_LVDS:
 145                 case OUTPUT_TMDS:
 146                         ret = nv04_dfp_create(connector, dcbent);
 147                         break;
 148                 case OUTPUT_TV:
 149                         if (dcbent->location == DCB_LOC_ON_CHIP)
 150                                 ret = nv17_tv_create(connector, dcbent);
 151                         else
 152                                 ret = nv04_tv_create(connector, dcbent);
 153                         break;
 154                 default:
 155                         NV_WARN(dev, "DCB type %d not known\n", dcbent->type);
 156                         continue;
 157                 }
 158
 159                 if (ret)
 160                         continue;
 161         }
 162
 163         list_for_each_entry_safe(connector, ct,
 164                                  &dev->mode_config.connector_list, head) {
 165                 if (!connector->encoder_ids[0]) {
 166                         NV_WARN(dev, "%s has no encoders, removing\n",
 167                                 drm_get_connector_name(connector));
 168                         connector->funcs->destroy(connector);
 169                 }
 170         }
 171
 172         /* Save previous state */
 173         NVLockVgaCrtcs(dev, false);
 174
 175         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 176                 crtc->funcs->save(crtc);
 177
 178         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 179                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 180
 181                 func->save(encoder);
 182         }
 183
 184         return 0;
 185 }
 186
 187 void
 188 nv04_display_destroy(struct drm_device *dev)
 189 {
 190         struct drm_encoder *encoder;
 191         struct drm_crtc *crtc;
 192
 193         NV_DEBUG_KMS(dev, "\n");
 194
 195         /* Turn every CRTC off. */
 196         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 197                 struct drm_mode_set modeset = {
 198                         .crtc = crtc,
 199                 };
 200
 201                 crtc->funcs->set_config(&modeset);
 202         }
 203
 204         /* Restore state */
 205         NVLockVgaCrtcs(dev, false);
 206
 207         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 208                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 209
 210                 func->restore(encoder);
 211         }
 212
 213         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 214                 crtc->funcs->restore(crtc);
 215
 216         drm_mode_config_cleanup(dev);
 217
 218         nouveau_hw_save_vga_fonts(dev, 0);
 219 }
 220
 221 void
 222 nv04_display_restore(struct drm_device *dev)
 223 {
 224         struct drm_nouveau_private *dev_priv = dev->dev_private;
 225         struct drm_encoder *encoder;
 226         struct drm_crtc *crtc;
 227
 228         NVLockVgaCrtcs(dev, false);
 229
 230         /* meh.. modeset apparently doesn't setup all the regs and depends
 231          * on pre-existing state, for now load the state of the card *before*
 232          * nouveau was loaded, and then do a modeset.
 233          *
 234          * best thing to do probably is to make save/restore routines not
 235          * save/restore "pre-load" state, but more general so we can save
 236          * on suspend too.
 237          */
 238         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 239                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 240
 241                 func->restore(encoder);
 242         }
 243
 244         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 245                 crtc->funcs->restore(crtc);
 246
 247         if (nv_two_heads(dev)) {
 248                 NV_INFO(dev, "Restoring CRTC_OWNER to %d.\n",
 249                         dev_priv->crtc_owner);
 250                 NVSetOwner(dev, dev_priv->crtc_owner);
 251         }
 252
 253         NVLockVgaCrtcs(dev, true);
 254 }
 255