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_drm.h"
  29 #include "nouveau_reg.h"
  30 #include "hw.h"
  31 #include "nouveau_encoder.h"
  32 #include "nouveau_connector.h"
  33
  34 int
  35 nv04_display_early_init(struct drm_device *dev)
  36 {
  37         /* ensure vblank interrupts are off, they can't be enabled until
  38          * drm_vblank has been initialised
  39          */
  40         NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
  41         if (nv_two_heads(dev))
  42                 NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
  43
  44         return 0;
  45 }
  46
  47 void
  48 nv04_display_late_takedown(struct drm_device *dev)
  49 {
  50 }
  51
  52 int
  53 nv04_display_create(struct drm_device *dev)
  54 {
  55         struct nouveau_drm *drm = nouveau_drm(dev);
  56         struct nouveau_i2c *i2c = nvkm_i2c(&drm->device);
  57         struct dcb_table *dcb = &drm->vbios.dcb;
  58         struct drm_connector *connector, *ct;
  59         struct drm_encoder *encoder;
  60         struct drm_crtc *crtc;
  61         struct nv04_display *disp;
  62         int i, ret;
  63
  64         disp = kzalloc(sizeof(*disp), GFP_KERNEL);
  65         if (!disp)
  66                 return -ENOMEM;
  67
  68         nvif_object_map(nvif_object(&drm->device));
  69
  70         nouveau_display(dev)->priv = disp;
  71         nouveau_display(dev)->dtor = nv04_display_destroy;
  72         nouveau_display(dev)->init = nv04_display_init;
  73         nouveau_display(dev)->fini = nv04_display_fini;
  74
  75         nouveau_hw_save_vga_fonts(dev, 1);
  76
  77         nv04_crtc_create(dev, 0);
  78         if (nv_two_heads(dev))
  79                 nv04_crtc_create(dev, 1);
  80
  81         for (i = 0; i < dcb->entries; i++) {
  82                 struct dcb_output *dcbent = &dcb->entry[i];
  83
  84                 connector = nouveau_connector_create(dev, dcbent->connector);
  85                 if (IS_ERR(connector))
  86                         continue;
  87
  88                 switch (dcbent->type) {
  89                 case DCB_OUTPUT_ANALOG:
  90                         ret = nv04_dac_create(connector, dcbent);
  91                         break;
  92                 case DCB_OUTPUT_LVDS:
  93                 case DCB_OUTPUT_TMDS:
  94                         ret = nv04_dfp_create(connector, dcbent);
  95                         break;
  96                 case DCB_OUTPUT_TV:
  97                         if (dcbent->location == DCB_LOC_ON_CHIP)
  98                                 ret = nv17_tv_create(connector, dcbent);
  99                         else
 100                                 ret = nv04_tv_create(connector, dcbent);
 101                         break;
 102                 default:
 103                         NV_WARN(drm, "DCB type %d not known\n", dcbent->type);
 104                         continue;
 105                 }
 106
 107                 if (ret)
 108                         continue;
 109         }
 110
 111         list_for_each_entry_safe(connector, ct,
 112                                  &dev->mode_config.connector_list, head) {
 113                 if (!connector->encoder_ids[0]) {
 114                         NV_WARN(drm, "%s has no encoders, removing\n",
 115                                 connector->name);
 116                         connector->funcs->destroy(connector);
 117                 }
 118         }
 119
 120         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 121                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 122                 nv_encoder->i2c = i2c->find(i2c, nv_encoder->dcb->i2c_index);
 123         }
 124
 125         /* Save previous state */
 126         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 127                 crtc->funcs->save(crtc);
 128
 129         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 130                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 131
 132                 func->save(encoder);
 133         }
 134
 135         nouveau_overlay_init(dev);
 136
 137         return 0;
 138 }
 139
 140 void
 141 nv04_display_destroy(struct drm_device *dev)
 142 {
 143         struct nv04_display *disp = nv04_display(dev);
 144         struct nouveau_drm *drm = nouveau_drm(dev);
 145         struct drm_encoder *encoder;
 146         struct drm_crtc *crtc;
 147
 148         /* Turn every CRTC off. */
 149         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 150                 struct drm_mode_set modeset = {
 151                         .crtc = crtc,
 152                 };
 153
 154                 drm_mode_set_config_internal(&modeset);
 155         }
 156
 157         /* Restore state */
 158         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 159                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 160
 161                 func->restore(encoder);
 162         }
 163
 164         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 165                 crtc->funcs->restore(crtc);
 166
 167         nouveau_hw_save_vga_fonts(dev, 0);
 168
 169         nouveau_display(dev)->priv = NULL;
 170         kfree(disp);
 171
 172         nvif_object_unmap(nvif_object(&drm->device));
 173 }
 174
 175 int
 176 nv04_display_init(struct drm_device *dev)
 177 {
 178         struct drm_encoder *encoder;
 179         struct drm_crtc *crtc;
 180
 181         /* meh.. modeset apparently doesn't setup all the regs and depends
 182          * on pre-existing state, for now load the state of the card *before*
 183          * nouveau was loaded, and then do a modeset.
 184          *
 185          * best thing to do probably is to make save/restore routines not
 186          * save/restore "pre-load" state, but more general so we can save
 187          * on suspend too.
 188          */
 189         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 190                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 191
 192                 func->restore(encoder);
 193         }
 194
 195         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 196                 crtc->funcs->restore(crtc);
 197
 198         return 0;
 199 }
 200
 201 void
 202 nv04_display_fini(struct drm_device *dev)
 203 {
 204         /* disable vblank interrupts */
 205         NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
 206         if (nv_two_heads(dev))
 207                 NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
 208 }