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/drmP.h>
  26 #include <drm/drm_crtc_helper.h>
  27
  28 #include "nouveau_drv.h"
  29 #include "nouveau_reg.h"
  30 #include "hw.h"
  31 #include "nouveau_encoder.h"
  32 #include "nouveau_connector.h"
  33 #include "nouveau_bo.h"
  34
  35 #include <nvif/if0004.h>
  36
  37 static void
  38 nv04_display_fini(struct drm_device *dev, bool suspend)
  39 {
  40         struct nv04_display *disp = nv04_display(dev);
  41         struct drm_crtc *crtc;
  42
  43         /* Disable flip completion events. */
  44         nvif_notify_put(&disp->flip);
  45
  46         /* Disable vblank interrupts. */
  47         NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
  48         if (nv_two_heads(dev))
  49                 NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
  50
  51         if (!suspend)
  52                 return;
  53
  54         /* Un-pin FB and cursors so they'll be evicted to system memory. */
  55         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
  56                 struct nouveau_framebuffer *nouveau_fb;
  57
  58                 nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
  59                 if (!nouveau_fb || !nouveau_fb->nvbo)
  60                         continue;
  61
  62                 nouveau_bo_unpin(nouveau_fb->nvbo);
  63         }
  64
  65         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
  66                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
  67                 if (nv_crtc->cursor.nvbo) {
  68                         if (nv_crtc->cursor.set_offset)
  69                                 nouveau_bo_unmap(nv_crtc->cursor.nvbo);
  70                         nouveau_bo_unpin(nv_crtc->cursor.nvbo);
  71                 }
  72         }
  73 }
  74
  75 static int
  76 nv04_display_init(struct drm_device *dev, bool resume, bool runtime)
  77 {
  78         struct nv04_display *disp = nv04_display(dev);
  79         struct nouveau_drm *drm = nouveau_drm(dev);
  80         struct nouveau_encoder *encoder;
  81         struct drm_crtc *crtc;
  82         int ret;
  83
  84         /* meh.. modeset apparently doesn't setup all the regs and depends
  85          * on pre-existing state, for now load the state of the card *before*
  86          * nouveau was loaded, and then do a modeset.
  87          *
  88          * best thing to do probably is to make save/restore routines not
  89          * save/restore "pre-load" state, but more general so we can save
  90          * on suspend too.
  91          */
  92         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
  93                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
  94                 nv_crtc->save(&nv_crtc->base);
  95         }
  96
  97         list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
  98                 encoder->enc_save(&encoder->base.base);
  99
 100         /* Enable flip completion events. */
 101         nvif_notify_get(&disp->flip);
 102
 103         if (!resume)
 104                 return 0;
 105
 106         /* Re-pin FB/cursors. */
 107         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 108                 struct nouveau_framebuffer *nouveau_fb;
 109
 110                 nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
 111                 if (!nouveau_fb || !nouveau_fb->nvbo)
 112                         continue;
 113
 114                 ret = nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM, true);
 115                 if (ret)
 116                         NV_ERROR(drm, "Could not pin framebuffer\n");
 117         }
 118
 119         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 120                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 121                 if (!nv_crtc->cursor.nvbo)
 122                         continue;
 123
 124                 ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM, true);
 125                 if (!ret && nv_crtc->cursor.set_offset)
 126                         ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
 127                 if (ret)
 128                         NV_ERROR(drm, "Could not pin/map cursor.\n");
 129         }
 130
 131         /* Force CLUT to get re-loaded during modeset. */
 132         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 133                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 134
 135                 nv_crtc->lut.depth = 0;
 136         }
 137
 138         /* This should ensure we don't hit a locking problem when someone
 139          * wakes us up via a connector.  We should never go into suspend
 140          * while the display is on anyways.
 141          */
 142         if (runtime)
 143                 return 0;
 144
 145         /* Restore mode. */
 146         drm_helper_resume_force_mode(dev);
 147
 148         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 149                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 150
 151                 if (!nv_crtc->cursor.nvbo)
 152                         continue;
 153
 154                 if (nv_crtc->cursor.set_offset)
 155                         nv_crtc->cursor.set_offset(nv_crtc, nv_crtc->cursor.nvbo->bo.offset);
 156                 nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
 157                                                  nv_crtc->cursor_saved_y);
 158         }
 159
 160         return 0;
 161 }
 162
 163 static void
 164 nv04_display_destroy(struct drm_device *dev)
 165 {
 166         struct nv04_display *disp = nv04_display(dev);
 167         struct nouveau_drm *drm = nouveau_drm(dev);
 168         struct nouveau_encoder *encoder;
 169         struct nouveau_crtc *nv_crtc;
 170
 171         /* Restore state */
 172         list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
 173                 encoder->enc_restore(&encoder->base.base);
 174
 175         list_for_each_entry(nv_crtc, &dev->mode_config.crtc_list, base.head)
 176                 nv_crtc->restore(&nv_crtc->base);
 177
 178         nouveau_hw_save_vga_fonts(dev, 0);
 179
 180         nvif_notify_fini(&disp->flip);
 181
 182         nouveau_display(dev)->priv = NULL;
 183         kfree(disp);
 184
 185         nvif_object_unmap(&drm->client.device.object);
 186 }
 187
 188 int
 189 nv04_display_create(struct drm_device *dev)
 190 {
 191         struct nouveau_drm *drm = nouveau_drm(dev);
 192         struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
 193         struct dcb_table *dcb = &drm->vbios.dcb;
 194         struct drm_connector *connector, *ct;
 195         struct drm_encoder *encoder;
 196         struct nouveau_encoder *nv_encoder;
 197         struct nouveau_crtc *crtc;
 198         struct nv04_display *disp;
 199         int i, ret;
 200
 201         disp = kzalloc(sizeof(*disp), GFP_KERNEL);
 202         if (!disp)
 203                 return -ENOMEM;
 204
 205         nvif_object_map(&drm->client.device.object, NULL, 0);
 206
 207         nouveau_display(dev)->priv = disp;
 208         nouveau_display(dev)->dtor = nv04_display_destroy;
 209         nouveau_display(dev)->init = nv04_display_init;
 210         nouveau_display(dev)->fini = nv04_display_fini;
 211
 212         /* Pre-nv50 doesn't support atomic, so don't expose the ioctls */
 213         dev->driver->driver_features &= ~DRIVER_ATOMIC;
 214
 215         /* Request page flip completion event. */
 216         if (drm->nvsw.client) {
 217                 nvif_notify_init(&drm->nvsw, nv04_flip_complete,
 218                                  false, NV04_NVSW_NTFY_UEVENT,
 219                                  NULL, 0, 0, &disp->flip);
 220         }
 221
 222         nouveau_hw_save_vga_fonts(dev, 1);
 223
 224         nv04_crtc_create(dev, 0);
 225         if (nv_two_heads(dev))
 226                 nv04_crtc_create(dev, 1);
 227
 228         for (i = 0; i < dcb->entries; i++) {
 229                 struct dcb_output *dcbent = &dcb->entry[i];
 230
 231                 connector = nouveau_connector_create(dev, dcbent);
 232                 if (IS_ERR(connector))
 233                         continue;
 234
 235                 switch (dcbent->type) {
 236                 case DCB_OUTPUT_ANALOG:
 237                         ret = nv04_dac_create(connector, dcbent);
 238                         break;
 239                 case DCB_OUTPUT_LVDS:
 240                 case DCB_OUTPUT_TMDS:
 241                         ret = nv04_dfp_create(connector, dcbent);
 242                         break;
 243                 case DCB_OUTPUT_TV:
 244                         if (dcbent->location == DCB_LOC_ON_CHIP)
 245                                 ret = nv17_tv_create(connector, dcbent);
 246                         else
 247                                 ret = nv04_tv_create(connector, dcbent);
 248                         break;
 249                 default:
 250                         NV_WARN(drm, "DCB type %d not known\n", dcbent->type);
 251                         continue;
 252                 }
 253
 254                 if (ret)
 255                         continue;
 256         }
 257
 258         list_for_each_entry_safe(connector, ct,
 259                                  &dev->mode_config.connector_list, head) {
 260                 if (!connector->encoder_ids[0]) {
 261                         NV_WARN(drm, "%s has no encoders, removing\n",
 262                                 connector->name);
 263                         connector->funcs->destroy(connector);
 264                 }
 265         }
 266
 267         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 268                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 269                 struct nvkm_i2c_bus *bus =
 270                         nvkm_i2c_bus_find(i2c, nv_encoder->dcb->i2c_index);
 271                 nv_encoder->i2c = bus ? &bus->i2c : NULL;
 272         }
 273
 274         /* Save previous state */
 275         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head)
 276                 crtc->save(&crtc->base);
 277
 278         list_for_each_entry(nv_encoder, &dev->mode_config.encoder_list, base.base.head)
 279                 nv_encoder->enc_save(&nv_encoder->base.base);
 280
 281         nouveau_overlay_init(dev);
 282
 283         return 0;
 284 }