drivers/gpu/drm/nouveau/dispnv04/disp.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 <drm/drm_crtc_helper.h>
  26
  27 #include "nouveau_drv.h"
  28 #include "nouveau_reg.h"
  29 #include "hw.h"
  30 #include "nouveau_encoder.h"
  31 #include "nouveau_connector.h"
  32 #include "nouveau_bo.h"
  33 #include "nouveau_gem.h"
  34 #include "nouveau_chan.h"
  35
  36 #include <nvif/if0004.h>
  37
  38 struct nouveau_connector *
  39 nv04_encoder_get_connector(struct nouveau_encoder *encoder)
  40 {
  41         struct drm_device *dev = to_drm_encoder(encoder)->dev;
  42         struct drm_connector *connector;
  43         struct drm_connector_list_iter conn_iter;
  44         struct nouveau_connector *nv_connector = NULL;
  45
  46         drm_connector_list_iter_begin(dev, &conn_iter);
  47         drm_for_each_connector_iter(connector, &conn_iter) {
  48                 if (connector->encoder == to_drm_encoder(encoder))
  49                         nv_connector = nouveau_connector(connector);
  50         }
  51         drm_connector_list_iter_end(&conn_iter);
  52
  53         return nv_connector;
  54 }
  55
  56 static void
  57 nv04_display_fini(struct drm_device *dev, bool runtime, bool suspend)
  58 {
  59         struct nouveau_drm *drm = nouveau_drm(dev);
  60         struct nv04_display *disp = nv04_display(dev);
  61         struct drm_crtc *crtc;
  62
  63         /* Disable flip completion events. */
  64         nvif_event_block(&disp->flip);
  65
  66         /* Disable vblank interrupts. */
  67         NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
  68         if (nv_two_heads(dev))
  69                 NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
  70
  71         if (!runtime)
  72                 cancel_work_sync(&drm->hpd_work);
  73
  74         if (!suspend)
  75                 return;
  76
  77         /* Un-pin FB and cursors so they'll be evicted to system memory. */
  78         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
  79                 struct drm_framebuffer *fb = crtc->primary->fb;
  80                 struct nouveau_bo *nvbo;
  81
  82                 if (!fb || !fb->obj[0])
  83                         continue;
  84                 nvbo = nouveau_gem_object(fb->obj[0]);
  85                 nouveau_bo_unpin(nvbo);
  86         }
  87
  88         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
  89                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
  90                 if (nv_crtc->cursor.nvbo) {
  91                         if (nv_crtc->cursor.set_offset)
  92                                 nouveau_bo_unmap(nv_crtc->cursor.nvbo);
  93                         nouveau_bo_unpin(nv_crtc->cursor.nvbo);
  94                 }
  95         }
  96 }
  97
  98 static int
  99 nv04_display_init(struct drm_device *dev, bool resume, bool runtime)
 100 {
 101         struct nv04_display *disp = nv04_display(dev);
 102         struct nouveau_drm *drm = nouveau_drm(dev);
 103         struct nouveau_encoder *encoder;
 104         struct drm_crtc *crtc;
 105         int ret;
 106
 107         /* meh.. modeset apparently doesn't setup all the regs and depends
 108          * on pre-existing state, for now load the state of the card *before*
 109          * nouveau was loaded, and then do a modeset.
 110          *
 111          * best thing to do probably is to make save/restore routines not
 112          * save/restore "pre-load" state, but more general so we can save
 113          * on suspend too.
 114          */
 115         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 116                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 117                 nv_crtc->save(&nv_crtc->base);
 118         }
 119
 120         list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
 121                 encoder->enc_save(&encoder->base.base);
 122
 123         /* Enable flip completion events. */
 124         nvif_event_allow(&disp->flip);
 125
 126         if (!resume)
 127                 return 0;
 128
 129         /* Re-pin FB/cursors. */
 130         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 131                 struct drm_framebuffer *fb = crtc->primary->fb;
 132                 struct nouveau_bo *nvbo;
 133
 134                 if (!fb || !fb->obj[0])
 135                         continue;
 136                 nvbo = nouveau_gem_object(fb->obj[0]);
 137                 ret = nouveau_bo_pin(nvbo, NOUVEAU_GEM_DOMAIN_VRAM, true);
 138                 if (ret)
 139                         NV_ERROR(drm, "Could not pin framebuffer\n");
 140         }
 141
 142         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 143                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 144                 if (!nv_crtc->cursor.nvbo)
 145                         continue;
 146
 147                 ret = nouveau_bo_pin(nv_crtc->cursor.nvbo,
 148                                      NOUVEAU_GEM_DOMAIN_VRAM, true);
 149                 if (!ret && nv_crtc->cursor.set_offset)
 150                         ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
 151                 if (ret)
 152                         NV_ERROR(drm, "Could not pin/map cursor.\n");
 153         }
 154
 155         /* Force CLUT to get re-loaded during modeset. */
 156         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 157                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 158
 159                 nv_crtc->lut.depth = 0;
 160         }
 161
 162         /* This should ensure we don't hit a locking problem when someone
 163          * wakes us up via a connector.  We should never go into suspend
 164          * while the display is on anyways.
 165          */
 166         if (runtime)
 167                 return 0;
 168
 169         /* Restore mode. */
 170         drm_helper_resume_force_mode(dev);
 171
 172         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 173                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 174
 175                 if (!nv_crtc->cursor.nvbo)
 176                         continue;
 177
 178                 if (nv_crtc->cursor.set_offset)
 179                         nv_crtc->cursor.set_offset(nv_crtc,
 180                                                    nv_crtc->cursor.nvbo->offset);
 181                 nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
 182                                                  nv_crtc->cursor_saved_y);
 183         }
 184
 185         return 0;
 186 }
 187
 188 static void
 189 nv04_display_destroy(struct drm_device *dev)
 190 {
 191         struct nv04_display *disp = nv04_display(dev);
 192         struct nouveau_drm *drm = nouveau_drm(dev);
 193         struct nouveau_encoder *encoder;
 194         struct nouveau_crtc *nv_crtc;
 195
 196         /* Restore state */
 197         list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
 198                 encoder->enc_restore(&encoder->base.base);
 199
 200         list_for_each_entry(nv_crtc, &dev->mode_config.crtc_list, base.head)
 201                 nv_crtc->restore(&nv_crtc->base);
 202
 203         nouveau_hw_save_vga_fonts(dev, 0);
 204
 205         nvif_event_dtor(&disp->flip);
 206
 207         nouveau_display(dev)->priv = NULL;
 208         vfree(disp);
 209
 210         nvif_object_unmap(&drm->client.device.object);
 211 }
 212
 213 int
 214 nv04_display_create(struct drm_device *dev)
 215 {
 216         struct nouveau_drm *drm = nouveau_drm(dev);
 217         struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
 218         struct dcb_table *dcb = &drm->vbios.dcb;
 219         struct drm_connector *connector, *ct;
 220         struct drm_encoder *encoder;
 221         struct nouveau_encoder *nv_encoder;
 222         struct nouveau_crtc *crtc;
 223         struct nv04_display *disp;
 224         int i, ret;
 225
 226         disp = vzalloc(sizeof(*disp));
 227         if (!disp)
 228                 return -ENOMEM;
 229
 230         disp->drm = drm;
 231
 232         nvif_object_map(&drm->client.device.object, NULL, 0);
 233
 234         nouveau_display(dev)->priv = disp;
 235         nouveau_display(dev)->dtor = nv04_display_destroy;
 236         nouveau_display(dev)->init = nv04_display_init;
 237         nouveau_display(dev)->fini = nv04_display_fini;
 238
 239         /* Pre-nv50 doesn't support atomic, so don't expose the ioctls */
 240         dev->driver_features &= ~DRIVER_ATOMIC;
 241
 242         /* Request page flip completion event. */
 243         if (drm->channel) {
 244                 ret = nvif_event_ctor(&drm->channel->nvsw, "kmsFlip", 0, nv04_flip_complete,
 245                                       true, NULL, 0, &disp->flip);
 246                 if (ret)
 247                         return ret;
 248         }
 249
 250         nouveau_hw_save_vga_fonts(dev, 1);
 251
 252         nv04_crtc_create(dev, 0);
 253         if (nv_two_heads(dev))
 254                 nv04_crtc_create(dev, 1);
 255
 256         for (i = 0; i < dcb->entries; i++) {
 257                 struct dcb_output *dcbent = &dcb->entry[i];
 258
 259                 connector = nouveau_connector_create(dev, dcbent->connector);
 260                 if (IS_ERR(connector))
 261                         continue;
 262
 263                 switch (dcbent->type) {
 264                 case DCB_OUTPUT_ANALOG:
 265                         ret = nv04_dac_create(connector, dcbent);
 266                         break;
 267                 case DCB_OUTPUT_LVDS:
 268                 case DCB_OUTPUT_TMDS:
 269                         ret = nv04_dfp_create(connector, dcbent);
 270                         break;
 271                 case DCB_OUTPUT_TV:
 272                         if (dcbent->location == DCB_LOC_ON_CHIP)
 273                                 ret = nv17_tv_create(connector, dcbent);
 274                         else
 275                                 ret = nv04_tv_create(connector, dcbent);
 276                         break;
 277                 default:
 278                         NV_WARN(drm, "DCB type %d not known\n", dcbent->type);
 279                         continue;
 280                 }
 281
 282                 if (ret)
 283                         continue;
 284         }
 285
 286         list_for_each_entry_safe(connector, ct,
 287                                  &dev->mode_config.connector_list, head) {
 288                 if (!connector->possible_encoders) {
 289                         NV_WARN(drm, "%s has no encoders, removing\n",
 290                                 connector->name);
 291                         connector->funcs->destroy(connector);
 292                 }
 293         }
 294
 295         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 296                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 297                 struct nvkm_i2c_bus *bus =
 298                         nvkm_i2c_bus_find(i2c, nv_encoder->dcb->i2c_index);
 299                 nv_encoder->i2c = bus ? &bus->i2c : NULL;
 300         }
 301
 302         /* Save previous state */
 303         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head)
 304                 crtc->save(&crtc->base);
 305
 306         list_for_each_entry(nv_encoder, &dev->mode_config.encoder_list, base.base.head)
 307                 nv_encoder->enc_save(&nv_encoder->base.base);
 308
 309         nouveau_overlay_init(dev);
 310
 311         return 0;
 312 }