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 static void
  36 nv04_display_store_initial_head_owner(struct drm_device *dev)
  37 {
  38         struct drm_nouveau_private *dev_priv = dev->dev_private;
  39
  40         if (dev_priv->chipset != 0x11) {
  41                 dev_priv->crtc_owner = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_44);
  42                 return;
  43         }
  44
  45         /* reading CR44 is broken on nv11, so we attempt to infer it */
  46         if (nvReadMC(dev, NV_PBUS_DEBUG_1) & (1 << 28)) /* heads tied, restore both */
  47                 dev_priv->crtc_owner = 0x4;
  48         else {
  49                 uint8_t slaved_on_A, slaved_on_B;
  50                 bool tvA = false;
  51                 bool tvB = false;
  52
  53                 slaved_on_B = NVReadVgaCrtc(dev, 1, NV_CIO_CRE_PIXEL_INDEX) &
  54                                                                         0x80;
  55                 if (slaved_on_B)
  56                         tvB = !(NVReadVgaCrtc(dev, 1, NV_CIO_CRE_LCD__INDEX) &
  57                                         MASK(NV_CIO_CRE_LCD_LCD_SELECT));
  58
  59                 slaved_on_A = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_PIXEL_INDEX) &
  60                                                                         0x80;
  61                 if (slaved_on_A)
  62                         tvA = !(NVReadVgaCrtc(dev, 0, NV_CIO_CRE_LCD__INDEX) &
  63                                         MASK(NV_CIO_CRE_LCD_LCD_SELECT));
  64
  65                 if (slaved_on_A && !tvA)
  66                         dev_priv->crtc_owner = 0x0;
  67                 else if (slaved_on_B && !tvB)
  68                         dev_priv->crtc_owner = 0x3;
  69                 else if (slaved_on_A)
  70                         dev_priv->crtc_owner = 0x0;
  71                 else if (slaved_on_B)
  72                         dev_priv->crtc_owner = 0x3;
  73                 else
  74                         dev_priv->crtc_owner = 0x0;
  75         }
  76 }
  77
  78 int
  79 nv04_display_early_init(struct drm_device *dev)
  80 {
  81         /* Unlock the VGA CRTCs. */
  82         NVLockVgaCrtcs(dev, false);
  83
  84         /* Make sure the CRTCs aren't in slaved mode. */
  85         if (nv_two_heads(dev)) {
  86                 nv04_display_store_initial_head_owner(dev);
  87                 NVSetOwner(dev, 0);
  88         }
  89
  90         return 0;
  91 }
  92
  93 void
  94 nv04_display_late_takedown(struct drm_device *dev)
  95 {
  96         struct drm_nouveau_private *dev_priv = dev->dev_private;
  97
  98         if (nv_two_heads(dev))
  99                 NVSetOwner(dev, dev_priv->crtc_owner);
 100
 101         NVLockVgaCrtcs(dev, true);
 102 }
 103
 104 int
 105 nv04_display_create(struct drm_device *dev)
 106 {
 107         struct drm_nouveau_private *dev_priv = dev->dev_private;
 108         struct dcb_table *dcb = &dev_priv->vbios.dcb;
 109         struct drm_connector *connector, *ct;
 110         struct drm_encoder *encoder;
 111         struct drm_crtc *crtc;
 112         int i, ret;
 113
 114         NV_DEBUG_KMS(dev, "\n");
 115
 116         nouveau_hw_save_vga_fonts(dev, 1);
 117
 118         drm_mode_config_init(dev);
 119         drm_mode_create_scaling_mode_property(dev);
 120         drm_mode_create_dithering_property(dev);
 121
 122         dev->mode_config.funcs = (void *)&nouveau_mode_config_funcs;
 123
 124         dev->mode_config.min_width = 0;
 125         dev->mode_config.min_height = 0;
 126         switch (dev_priv->card_type) {
 127         case NV_04:
 128                 dev->mode_config.max_width = 2048;
 129                 dev->mode_config.max_height = 2048;
 130                 break;
 131         default:
 132                 dev->mode_config.max_width = 4096;
 133                 dev->mode_config.max_height = 4096;
 134                 break;
 135         }
 136
 137         dev->mode_config.fb_base = dev_priv->fb_phys;
 138
 139         nv04_crtc_create(dev, 0);
 140         if (nv_two_heads(dev))
 141                 nv04_crtc_create(dev, 1);
 142
 143         for (i = 0; i < dcb->entries; i++) {
 144                 struct dcb_entry *dcbent = &dcb->entry[i];
 145
 146                 connector = nouveau_connector_create(dev, dcbent->connector);
 147                 if (IS_ERR(connector))
 148                         continue;
 149
 150                 switch (dcbent->type) {
 151                 case OUTPUT_ANALOG:
 152                         ret = nv04_dac_create(connector, dcbent);
 153                         break;
 154                 case OUTPUT_LVDS:
 155                 case OUTPUT_TMDS:
 156                         ret = nv04_dfp_create(connector, dcbent);
 157                         break;
 158                 case OUTPUT_TV:
 159                         if (dcbent->location == DCB_LOC_ON_CHIP)
 160                                 ret = nv17_tv_create(connector, dcbent);
 161                         else
 162                                 ret = nv04_tv_create(connector, dcbent);
 163                         break;
 164                 default:
 165                         NV_WARN(dev, "DCB type %d not known\n", dcbent->type);
 166                         continue;
 167                 }
 168
 169                 if (ret)
 170                         continue;
 171         }
 172
 173         list_for_each_entry_safe(connector, ct,
 174                                  &dev->mode_config.connector_list, head) {
 175                 if (!connector->encoder_ids[0]) {
 176                         NV_WARN(dev, "%s has no encoders, removing\n",
 177                                 drm_get_connector_name(connector));
 178                         connector->funcs->destroy(connector);
 179                 }
 180         }
 181
 182         /* Save previous state */
 183         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 184                 crtc->funcs->save(crtc);
 185
 186         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 187                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 188
 189                 func->save(encoder);
 190         }
 191
 192         return 0;
 193 }
 194
 195 void
 196 nv04_display_destroy(struct drm_device *dev)
 197 {
 198         struct drm_encoder *encoder;
 199         struct drm_crtc *crtc;
 200
 201         NV_DEBUG_KMS(dev, "\n");
 202
 203         /* Turn every CRTC off. */
 204         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 205                 struct drm_mode_set modeset = {
 206                         .crtc = crtc,
 207                 };
 208
 209                 crtc->funcs->set_config(&modeset);
 210         }
 211
 212         /* Restore state */
 213         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 214                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 215
 216                 func->restore(encoder);
 217         }
 218
 219         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 220                 crtc->funcs->restore(crtc);
 221
 222         drm_mode_config_cleanup(dev);
 223
 224         nouveau_hw_save_vga_fonts(dev, 0);
 225 }
 226
 227 int
 228 nv04_display_init(struct drm_device *dev)
 229 {
 230         struct drm_encoder *encoder;
 231         struct drm_crtc *crtc;
 232
 233         /* meh.. modeset apparently doesn't setup all the regs and depends
 234          * on pre-existing state, for now load the state of the card *before*
 235          * nouveau was loaded, and then do a modeset.
 236          *
 237          * best thing to do probably is to make save/restore routines not
 238          * save/restore "pre-load" state, but more general so we can save
 239          * on suspend too.
 240          */
 241         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 242                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 243
 244                 func->restore(encoder);
 245         }
 246
 247         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 248                 crtc->funcs->restore(crtc);
 249
 250         return 0;
 251 }
 252