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_encoder *encoder;
  98         struct drm_crtc *crtc;
  99         int i, ret;
 100
 101         NV_DEBUG_KMS(dev, "\n");
 102
 103         if (nv_two_heads(dev))
 104                 nv04_display_store_initial_head_owner(dev);
 105         nouveau_hw_save_vga_fonts(dev, 1);
 106
 107         drm_mode_config_init(dev);
 108         drm_mode_create_scaling_mode_property(dev);
 109         drm_mode_create_dithering_property(dev);
 110
 111         dev->mode_config.funcs = (void *)&nouveau_mode_config_funcs;
 112
 113         dev->mode_config.min_width = 0;
 114         dev->mode_config.min_height = 0;
 115         switch (dev_priv->card_type) {
 116         case NV_04:
 117                 dev->mode_config.max_width = 2048;
 118                 dev->mode_config.max_height = 2048;
 119                 break;
 120         default:
 121                 dev->mode_config.max_width = 4096;
 122                 dev->mode_config.max_height = 4096;
 123                 break;
 124         }
 125
 126         dev->mode_config.fb_base = dev_priv->fb_phys;
 127
 128         nv04_crtc_create(dev, 0);
 129         if (nv_two_heads(dev))
 130                 nv04_crtc_create(dev, 1);
 131
 132         for (i = 0; i < dcb->entries; i++) {
 133                 struct dcb_entry *dcbent = &dcb->entry[i];
 134
 135                 switch (dcbent->type) {
 136                 case OUTPUT_ANALOG:
 137                         ret = nv04_dac_create(dev, dcbent);
 138                         break;
 139                 case OUTPUT_LVDS:
 140                 case OUTPUT_TMDS:
 141                         ret = nv04_dfp_create(dev, dcbent);
 142                         break;
 143                 case OUTPUT_TV:
 144                         if (dcbent->location == DCB_LOC_ON_CHIP)
 145                                 ret = nv17_tv_create(dev, dcbent);
 146                         else
 147                                 ret = nv04_tv_create(dev, dcbent);
 148                         break;
 149                 default:
 150                         NV_WARN(dev, "DCB type %d not known\n", dcbent->type);
 151                         continue;
 152                 }
 153
 154                 if (ret)
 155                         continue;
 156         }
 157
 158         for (i = 0; i < dcb->connector.entries; i++)
 159                 nouveau_connector_create(dev, &dcb->connector.entry[i]);
 160
 161         /* Save previous state */
 162         NVLockVgaCrtcs(dev, false);
 163
 164         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 165                 crtc->funcs->save(crtc);
 166
 167         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 168                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 169
 170                 func->save(encoder);
 171         }
 172
 173         return 0;
 174 }
 175
 176 void
 177 nv04_display_destroy(struct drm_device *dev)
 178 {
 179         struct drm_encoder *encoder;
 180         struct drm_crtc *crtc;
 181
 182         NV_DEBUG_KMS(dev, "\n");
 183
 184         /* Turn every CRTC off. */
 185         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 186                 struct drm_mode_set modeset = {
 187                         .crtc = crtc,
 188                 };
 189
 190                 crtc->funcs->set_config(&modeset);
 191         }
 192
 193         /* Restore state */
 194         NVLockVgaCrtcs(dev, false);
 195
 196         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 197                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 198
 199                 func->restore(encoder);
 200         }
 201
 202         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 203                 crtc->funcs->restore(crtc);
 204
 205         drm_mode_config_cleanup(dev);
 206
 207         nouveau_hw_save_vga_fonts(dev, 0);
 208 }
 209
 210 void
 211 nv04_display_restore(struct drm_device *dev)
 212 {
 213         struct drm_nouveau_private *dev_priv = dev->dev_private;
 214         struct drm_encoder *encoder;
 215         struct drm_crtc *crtc;
 216
 217         NVLockVgaCrtcs(dev, false);
 218
 219         /* meh.. modeset apparently doesn't setup all the regs and depends
 220          * on pre-existing state, for now load the state of the card *before*
 221          * nouveau was loaded, and then do a modeset.
 222          *
 223          * best thing to do probably is to make save/restore routines not
 224          * save/restore "pre-load" state, but more general so we can save
 225          * on suspend too.
 226          */
 227         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 228                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 229
 230                 func->restore(encoder);
 231         }
 232
 233         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 234                 crtc->funcs->restore(crtc);
 235
 236         if (nv_two_heads(dev)) {
 237                 NV_INFO(dev, "Restoring CRTC_OWNER to %d.\n",
 238                         dev_priv->crtc_owner);
 239                 NVSetOwner(dev, dev_priv->crtc_owner);
 240         }
 241
 242         NVLockVgaCrtcs(dev, true);
 243 }
 244