Pileus Git - ~andy/linux/blob - drivers/gpu/drm/nouveau/nv04_display.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 "drmP.h"
  26 #include "drm.h"
  27 #include "drm_crtc_helper.h"
  28
  29 #include "nouveau_drm.h"
  30 #include "nouveau_reg.h"
  31 #include "nouveau_hw.h"
  32 #include "nouveau_encoder.h"
  33 #include "nouveau_connector.h"
  34
  35 int
  36 nv04_display_early_init(struct drm_device *dev)
  37 {
  38         /* ensure vblank interrupts are off, they can't be enabled until
  39          * drm_vblank has been initialised
  40          */
  41         NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
  42         if (nv_two_heads(dev))
  43                 NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
  44
  45         return 0;
  46 }
  47
  48 void
  49 nv04_display_late_takedown(struct drm_device *dev)
  50 {
  51 }
  52
  53 int
  54 nv04_display_create(struct drm_device *dev)
  55 {
  56         struct nouveau_drm *drm = nouveau_drm(dev);
  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         NV_DEBUG(drm, "\n");
  65
  66         disp = kzalloc(sizeof(*disp), GFP_KERNEL);
  67         if (!disp)
  68                 return -ENOMEM;
  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                                 drm_get_connector_name(connector));
 116                         connector->funcs->destroy(connector);
 117                 }
 118         }
 119
 120         /* Save previous state */
 121         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 122                 crtc->funcs->save(crtc);
 123
 124         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 125                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 126
 127                 func->save(encoder);
 128         }
 129
 130         return 0;
 131 }
 132
 133 void
 134 nv04_display_destroy(struct drm_device *dev)
 135 {
 136         struct nouveau_drm *drm = nouveau_drm(dev);
 137         struct nv04_display *disp = nv04_display(dev);
 138         struct drm_encoder *encoder;
 139         struct drm_crtc *crtc;
 140
 141         NV_DEBUG(drm, "\n");
 142
 143         /* Turn every CRTC off. */
 144         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 145                 struct drm_mode_set modeset = {
 146                         .crtc = crtc,
 147                 };
 148
 149                 crtc->funcs->set_config(&modeset);
 150         }
 151
 152         /* Restore state */
 153         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 154                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 155
 156                 func->restore(encoder);
 157         }
 158
 159         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 160                 crtc->funcs->restore(crtc);
 161
 162         nouveau_hw_save_vga_fonts(dev, 0);
 163
 164         nouveau_display(dev)->priv = NULL;
 165         kfree(disp);
 166 }
 167
 168 int
 169 nv04_display_init(struct drm_device *dev)
 170 {
 171         struct drm_encoder *encoder;
 172         struct drm_crtc *crtc;
 173
 174         /* meh.. modeset apparently doesn't setup all the regs and depends
 175          * on pre-existing state, for now load the state of the card *before*
 176          * nouveau was loaded, and then do a modeset.
 177          *
 178          * best thing to do probably is to make save/restore routines not
 179          * save/restore "pre-load" state, but more general so we can save
 180          * on suspend too.
 181          */
 182         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 183                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 184
 185                 func->restore(encoder);
 186         }
 187
 188         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 189                 crtc->funcs->restore(crtc);
 190
 191         return 0;
 192 }
 193
 194 void
 195 nv04_display_fini(struct drm_device *dev)
 196 {
 197         /* disable vblank interrupts */
 198         NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
 199         if (nv_two_heads(dev))
 200                 NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
 201 }