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
  34 #include <nvif/if0004.h>
  35
  36 static void
  37 nv04_display_fini(struct drm_device *dev, bool suspend)
  38 {
  39         struct nv04_display *disp = nv04_display(dev);
  40         struct drm_crtc *crtc;
  41
  42         /* Disable flip completion events. */
  43         nvif_notify_put(&disp->flip);
  44
  45         /* Disable vblank interrupts. */
  46         NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
  47         if (nv_two_heads(dev))
  48                 NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
  49
  50         if (!suspend)
  51                 return;
  52
  53         /* Un-pin FB and cursors so they'll be evicted to system memory. */
  54         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
  55                 struct nouveau_framebuffer *nouveau_fb;
  56
  57                 nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
  58                 if (!nouveau_fb || !nouveau_fb->nvbo)
  59                         continue;
  60
  61                 nouveau_bo_unpin(nouveau_fb->nvbo);
  62         }
  63
  64         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
  65                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
  66                 if (nv_crtc->cursor.nvbo) {
  67                         if (nv_crtc->cursor.set_offset)
  68                                 nouveau_bo_unmap(nv_crtc->cursor.nvbo);
  69                         nouveau_bo_unpin(nv_crtc->cursor.nvbo);
  70                 }
  71         }
  72 }
  73
  74 static int
  75 nv04_display_init(struct drm_device *dev, bool resume, bool runtime)
  76 {
  77         struct nv04_display *disp = nv04_display(dev);
  78         struct nouveau_drm *drm = nouveau_drm(dev);
  79         struct nouveau_encoder *encoder;
  80         struct drm_crtc *crtc;
  81         int ret;
  82
  83         /* meh.. modeset apparently doesn't setup all the regs and depends
  84          * on pre-existing state, for now load the state of the card *before*
  85          * nouveau was loaded, and then do a modeset.
  86          *
  87          * best thing to do probably is to make save/restore routines not
  88          * save/restore "pre-load" state, but more general so we can save
  89          * on suspend too.
  90          */
  91         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
  92                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
  93                 nv_crtc->save(&nv_crtc->base);
  94         }
  95
  96         list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
  97                 encoder->enc_save(&encoder->base.base);
  98
  99         /* Enable flip completion events. */
 100         nvif_notify_get(&disp->flip);
 101
 102         if (!resume)
 103                 return 0;
 104
 105         /* Re-pin FB/cursors. */
 106         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 107                 struct nouveau_framebuffer *nouveau_fb;
 108
 109                 nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
 110                 if (!nouveau_fb || !nouveau_fb->nvbo)
 111                         continue;
 112
 113                 ret = nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM, true);
 114                 if (ret)
 115                         NV_ERROR(drm, "Could not pin framebuffer\n");
 116         }
 117
 118         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 119                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 120                 if (!nv_crtc->cursor.nvbo)
 121                         continue;
 122
 123                 ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM, true);
 124                 if (!ret && nv_crtc->cursor.set_offset)
 125                         ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
 126                 if (ret)
 127                         NV_ERROR(drm, "Could not pin/map cursor.\n");
 128         }
 129
 130         /* Force CLUT to get re-loaded during modeset. */
 131         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 132                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 133
 134                 nv_crtc->lut.depth = 0;
 135         }
 136
 137         /* This should ensure we don't hit a locking problem when someone
 138          * wakes us up via a connector.  We should never go into suspend
 139          * while the display is on anyways.
 140          */
 141         if (runtime)
 142                 return 0;
 143
 144         /* Restore mode. */
 145         drm_helper_resume_force_mode(dev);
 146
 147         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 148                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 149
 150                 if (!nv_crtc->cursor.nvbo)
 151                         continue;
 152
 153                 if (nv_crtc->cursor.set_offset)
 154                         nv_crtc->cursor.set_offset(nv_crtc, nv_crtc->cursor.nvbo->bo.offset);
 155                 nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
 156                                                  nv_crtc->cursor_saved_y);
 157         }
 158
 159         return 0;
 160 }
 161
 162 static void
 163 nv04_display_destroy(struct drm_device *dev)
 164 {
 165         struct nv04_display *disp = nv04_display(dev);
 166         struct nouveau_drm *drm = nouveau_drm(dev);
 167         struct nouveau_encoder *encoder;
 168         struct nouveau_crtc *nv_crtc;
 169
 170         /* Restore state */
 171         list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
 172                 encoder->enc_restore(&encoder->base.base);
 173
 174         list_for_each_entry(nv_crtc, &dev->mode_config.crtc_list, base.head)
 175                 nv_crtc->restore(&nv_crtc->base);
 176
 177         nouveau_hw_save_vga_fonts(dev, 0);
 178
 179         nvif_notify_fini(&disp->flip);
 180
 181         nouveau_display(dev)->priv = NULL;
 182         kfree(disp);
 183
 184         nvif_object_unmap(&drm->client.device.object);
 185 }
 186
 187 int
 188 nv04_display_create(struct drm_device *dev)
 189 {
 190         struct nouveau_drm *drm = nouveau_drm(dev);
 191         struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
 192         struct dcb_table *dcb = &drm->vbios.dcb;
 193         struct drm_connector *connector, *ct;
 194         struct drm_encoder *encoder;
 195         struct nouveau_encoder *nv_encoder;
 196         struct nouveau_crtc *crtc;
 197         struct nv04_display *disp;
 198         int i, ret;
 199
 200         disp = kzalloc(sizeof(*disp), GFP_KERNEL);
 201         if (!disp)
 202                 return -ENOMEM;
 203
 204         nvif_object_map(&drm->client.device.object, NULL, 0);
 205
 206         nouveau_display(dev)->priv = disp;
 207         nouveau_display(dev)->dtor = nv04_display_destroy;
 208         nouveau_display(dev)->init = nv04_display_init;
 209         nouveau_display(dev)->fini = nv04_display_fini;
 210
 211         /* Pre-nv50 doesn't support atomic, so don't expose the ioctls */
 212         dev->driver_features &= ~DRIVER_ATOMIC;
 213
 214         /* Request page flip completion event. */
 215         if (drm->nvsw.client) {
 216                 nvif_notify_init(&drm->nvsw, nv04_flip_complete,
 217                                  false, NV04_NVSW_NTFY_UEVENT,
 218                                  NULL, 0, 0, &disp->flip);
 219         }
 220
 221         nouveau_hw_save_vga_fonts(dev, 1);
 222
 223         nv04_crtc_create(dev, 0);
 224         if (nv_two_heads(dev))
 225                 nv04_crtc_create(dev, 1);
 226
 227         for (i = 0; i < dcb->entries; i++) {
 228                 struct dcb_output *dcbent = &dcb->entry[i];
 229
 230                 connector = nouveau_connector_create(dev, dcbent);
 231                 if (IS_ERR(connector))
 232                         continue;
 233
 234                 switch (dcbent->type) {
 235                 case DCB_OUTPUT_ANALOG:
 236                         ret = nv04_dac_create(connector, dcbent);
 237                         break;
 238                 case DCB_OUTPUT_LVDS:
 239                 case DCB_OUTPUT_TMDS:
 240                         ret = nv04_dfp_create(connector, dcbent);
 241                         break;
 242                 case DCB_OUTPUT_TV:
 243                         if (dcbent->location == DCB_LOC_ON_CHIP)
 244                                 ret = nv17_tv_create(connector, dcbent);
 245                         else
 246                                 ret = nv04_tv_create(connector, dcbent);
 247                         break;
 248                 default:
 249                         NV_WARN(drm, "DCB type %d not known\n", dcbent->type);
 250                         continue;
 251                 }
 252
 253                 if (ret)
 254                         continue;
 255         }
 256
 257         list_for_each_entry_safe(connector, ct,
 258                                  &dev->mode_config.connector_list, head) {
 259                 if (!connector->possible_encoders) {
 260                         NV_WARN(drm, "%s has no encoders, removing\n",
 261                                 connector->name);
 262                         connector->funcs->destroy(connector);
 263                 }
 264         }
 265
 266         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 267                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 268                 struct nvkm_i2c_bus *bus =
 269                         nvkm_i2c_bus_find(i2c, nv_encoder->dcb->i2c_index);
 270                 nv_encoder->i2c = bus ? &bus->i2c : NULL;
 271         }
 272
 273         /* Save previous state */
 274         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head)
 275                 crtc->save(&crtc->base);
 276
 277         list_for_each_entry(nv_encoder, &dev->mode_config.encoder_list, base.base.head)
 278                 nv_encoder->enc_save(&nv_encoder->base.base);
 279
 280         nouveau_overlay_init(dev);
 281
 282         return 0;
 283 }