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_notify_put(&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_notify_get(&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, TTM_PL_FLAG_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, TTM_PL_FLAG_VRAM, true);
 148                 if (!ret && nv_crtc->cursor.set_offset)
 149                         ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
 150                 if (ret)
 151                         NV_ERROR(drm, "Could not pin/map cursor.\n");
 152         }
 153
 154         /* Force CLUT to get re-loaded during modeset. */
 155         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 156                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 157
 158                 nv_crtc->lut.depth = 0;
 159         }
 160
 161         /* This should ensure we don't hit a locking problem when someone
 162          * wakes us up via a connector.  We should never go into suspend
 163          * while the display is on anyways.
 164          */
 165         if (runtime)
 166                 return 0;
 167
 168         /* Restore mode. */
 169         drm_helper_resume_force_mode(dev);
 170
 171         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 172                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 173
 174                 if (!nv_crtc->cursor.nvbo)
 175                         continue;
 176
 177                 if (nv_crtc->cursor.set_offset)
 178                         nv_crtc->cursor.set_offset(nv_crtc,
 179                                                    nv_crtc->cursor.nvbo->offset);
 180                 nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
 181                                                  nv_crtc->cursor_saved_y);
 182         }
 183
 184         return 0;
 185 }
 186
 187 static void
 188 nv04_display_destroy(struct drm_device *dev)
 189 {
 190         struct nv04_display *disp = nv04_display(dev);
 191         struct nouveau_drm *drm = nouveau_drm(dev);
 192         struct nouveau_encoder *encoder;
 193         struct nouveau_crtc *nv_crtc;
 194
 195         /* Restore state */
 196         list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
 197                 encoder->enc_restore(&encoder->base.base);
 198
 199         list_for_each_entry(nv_crtc, &dev->mode_config.crtc_list, base.head)
 200                 nv_crtc->restore(&nv_crtc->base);
 201
 202         nouveau_hw_save_vga_fonts(dev, 0);
 203
 204         nvif_notify_dtor(&disp->flip);
 205
 206         nouveau_display(dev)->priv = NULL;
 207         kfree(disp);
 208
 209         nvif_object_unmap(&drm->client.device.object);
 210 }
 211
 212 int
 213 nv04_display_create(struct drm_device *dev)
 214 {
 215         struct nouveau_drm *drm = nouveau_drm(dev);
 216         struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
 217         struct dcb_table *dcb = &drm->vbios.dcb;
 218         struct drm_connector *connector, *ct;
 219         struct drm_encoder *encoder;
 220         struct nouveau_encoder *nv_encoder;
 221         struct nouveau_crtc *crtc;
 222         struct nv04_display *disp;
 223         int i, ret;
 224
 225         disp = kzalloc(sizeof(*disp), GFP_KERNEL);
 226         if (!disp)
 227                 return -ENOMEM;
 228
 229         nvif_object_map(&drm->client.device.object, NULL, 0);
 230
 231         nouveau_display(dev)->priv = disp;
 232         nouveau_display(dev)->dtor = nv04_display_destroy;
 233         nouveau_display(dev)->init = nv04_display_init;
 234         nouveau_display(dev)->fini = nv04_display_fini;
 235
 236         /* Pre-nv50 doesn't support atomic, so don't expose the ioctls */
 237         dev->driver_features &= ~DRIVER_ATOMIC;
 238
 239         /* Request page flip completion event. */
 240         if (drm->channel) {
 241                 nvif_notify_ctor(&drm->channel->nvsw, "kmsFlip", nv04_flip_complete,
 242                                  false, NV04_NVSW_NTFY_UEVENT,
 243                                  NULL, 0, 0, &disp->flip);
 244         }
 245
 246         nouveau_hw_save_vga_fonts(dev, 1);
 247
 248         nv04_crtc_create(dev, 0);
 249         if (nv_two_heads(dev))
 250                 nv04_crtc_create(dev, 1);
 251
 252         for (i = 0; i < dcb->entries; i++) {
 253                 struct dcb_output *dcbent = &dcb->entry[i];
 254
 255                 connector = nouveau_connector_create(dev, dcbent);
 256                 if (IS_ERR(connector))
 257                         continue;
 258
 259                 switch (dcbent->type) {
 260                 case DCB_OUTPUT_ANALOG:
 261                         ret = nv04_dac_create(connector, dcbent);
 262                         break;
 263                 case DCB_OUTPUT_LVDS:
 264                 case DCB_OUTPUT_TMDS:
 265                         ret = nv04_dfp_create(connector, dcbent);
 266                         break;
 267                 case DCB_OUTPUT_TV:
 268                         if (dcbent->location == DCB_LOC_ON_CHIP)
 269                                 ret = nv17_tv_create(connector, dcbent);
 270                         else
 271                                 ret = nv04_tv_create(connector, dcbent);
 272                         break;
 273                 default:
 274                         NV_WARN(drm, "DCB type %d not known\n", dcbent->type);
 275                         continue;
 276                 }
 277
 278                 if (ret)
 279                         continue;
 280         }
 281
 282         list_for_each_entry_safe(connector, ct,
 283                                  &dev->mode_config.connector_list, head) {
 284                 if (!connector->possible_encoders) {
 285                         NV_WARN(drm, "%s has no encoders, removing\n",
 286                                 connector->name);
 287                         connector->funcs->destroy(connector);
 288                 }
 289         }
 290
 291         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 292                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 293                 struct nvkm_i2c_bus *bus =
 294                         nvkm_i2c_bus_find(i2c, nv_encoder->dcb->i2c_index);
 295                 nv_encoder->i2c = bus ? &bus->i2c : NULL;
 296         }
 297
 298         /* Save previous state */
 299         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head)
 300                 crtc->save(&crtc->base);
 301
 302         list_for_each_entry(nv_encoder, &dev->mode_config.encoder_list, base.base.head)
 303                 nv_encoder->enc_save(&nv_encoder->base.base);
 304
 305         nouveau_overlay_init(dev);
 306
 307         return 0;
 308 }