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_drv.h"
  30 #include "nouveau_fb.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 drm_nouveau_private *dev_priv = dev->dev_private;
  57         struct dcb_table *dcb = &dev_priv->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_KMS(dev, "\n");
  65
  66         disp = kzalloc(sizeof(*disp), GFP_KERNEL);
  67         dev_priv->engine.display.priv = disp;
  68         if (!disp)
  69                 return -ENOMEM;
  70
  71         nouveau_hw_save_vga_fonts(dev, 1);
  72
  73         nv04_crtc_create(dev, 0);
  74         if (nv_two_heads(dev))
  75                 nv04_crtc_create(dev, 1);
  76
  77         for (i = 0; i < dcb->entries; i++) {
  78                 struct dcb_output *dcbent = &dcb->entry[i];
  79
  80                 connector = nouveau_connector_create(dev, dcbent->connector);
  81                 if (IS_ERR(connector))
  82                         continue;
  83
  84                 switch (dcbent->type) {
  85                 case DCB_OUTPUT_ANALOG:
  86                         ret = nv04_dac_create(connector, dcbent);
  87                         break;
  88                 case DCB_OUTPUT_LVDS:
  89                 case DCB_OUTPUT_TMDS:
  90                         ret = nv04_dfp_create(connector, dcbent);
  91                         break;
  92                 case DCB_OUTPUT_TV:
  93                         if (dcbent->location == DCB_LOC_ON_CHIP)
  94                                 ret = nv17_tv_create(connector, dcbent);
  95                         else
  96                                 ret = nv04_tv_create(connector, dcbent);
  97                         break;
  98                 default:
  99                         NV_WARN(dev, "DCB type %d not known\n", dcbent->type);
 100                         continue;
 101                 }
 102
 103                 if (ret)
 104                         continue;
 105         }
 106
 107         list_for_each_entry_safe(connector, ct,
 108                                  &dev->mode_config.connector_list, head) {
 109                 if (!connector->encoder_ids[0]) {
 110                         NV_WARN(dev, "%s has no encoders, removing\n",
 111                                 drm_get_connector_name(connector));
 112                         connector->funcs->destroy(connector);
 113                 }
 114         }
 115
 116         /* Save previous state */
 117         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 118                 crtc->funcs->save(crtc);
 119
 120         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 121                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 122
 123                 func->save(encoder);
 124         }
 125
 126         return 0;
 127 }
 128
 129 void
 130 nv04_display_destroy(struct drm_device *dev)
 131 {
 132         struct drm_nouveau_private *dev_priv = dev->dev_private;
 133         struct nv04_display *disp = nv04_display(dev);
 134         struct drm_encoder *encoder;
 135         struct drm_crtc *crtc;
 136
 137         NV_DEBUG_KMS(dev, "\n");
 138
 139         /* Turn every CRTC off. */
 140         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 141                 struct drm_mode_set modeset = {
 142                         .crtc = crtc,
 143                 };
 144
 145                 crtc->funcs->set_config(&modeset);
 146         }
 147
 148         /* Restore state */
 149         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 150                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 151
 152                 func->restore(encoder);
 153         }
 154
 155         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 156                 crtc->funcs->restore(crtc);
 157
 158         nouveau_hw_save_vga_fonts(dev, 0);
 159
 160         dev_priv->engine.display.priv = NULL;
 161         kfree(disp);
 162 }
 163
 164 int
 165 nv04_display_init(struct drm_device *dev)
 166 {
 167         struct drm_encoder *encoder;
 168         struct drm_crtc *crtc;
 169
 170         /* meh.. modeset apparently doesn't setup all the regs and depends
 171          * on pre-existing state, for now load the state of the card *before*
 172          * nouveau was loaded, and then do a modeset.
 173          *
 174          * best thing to do probably is to make save/restore routines not
 175          * save/restore "pre-load" state, but more general so we can save
 176          * on suspend too.
 177          */
 178         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 179                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 180
 181                 func->restore(encoder);
 182         }
 183
 184         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 185                 crtc->funcs->restore(crtc);
 186
 187         return 0;
 188 }
 189
 190 void
 191 nv04_display_fini(struct drm_device *dev)
 192 {
 193         /* disable vblank interrupts */
 194         NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
 195         if (nv_two_heads(dev))
 196                 NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
 197 }