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 <drm/drmP.h>
  26 #include <drm/drm_crtc_helper.h>
  27
  28 #include "nouveau_drm.h"
  29 #include "nouveau_reg.h"
  30 #include "nouveau_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 dcb_table *dcb = &drm->vbios.dcb;
  57         struct drm_connector *connector, *ct;
  58         struct drm_encoder *encoder;
  59         struct drm_crtc *crtc;
  60         struct nv04_display *disp;
  61         int i, ret;
  62
  63         NV_DEBUG(drm, "\n");
  64
  65         disp = kzalloc(sizeof(*disp), GFP_KERNEL);
  66         if (!disp)
  67                 return -ENOMEM;
  68
  69         nouveau_display(dev)->priv = disp;
  70         nouveau_display(dev)->dtor = nv04_display_destroy;
  71         nouveau_display(dev)->init = nv04_display_init;
  72         nouveau_display(dev)->fini = nv04_display_fini;
  73
  74         nouveau_hw_save_vga_fonts(dev, 1);
  75
  76         nv04_crtc_create(dev, 0);
  77         if (nv_two_heads(dev))
  78                 nv04_crtc_create(dev, 1);
  79
  80         for (i = 0; i < dcb->entries; i++) {
  81                 struct dcb_output *dcbent = &dcb->entry[i];
  82
  83                 connector = nouveau_connector_create(dev, dcbent->connector);
  84                 if (IS_ERR(connector))
  85                         continue;
  86
  87                 switch (dcbent->type) {
  88                 case DCB_OUTPUT_ANALOG:
  89                         ret = nv04_dac_create(connector, dcbent);
  90                         break;
  91                 case DCB_OUTPUT_LVDS:
  92                 case DCB_OUTPUT_TMDS:
  93                         ret = nv04_dfp_create(connector, dcbent);
  94                         break;
  95                 case DCB_OUTPUT_TV:
  96                         if (dcbent->location == DCB_LOC_ON_CHIP)
  97                                 ret = nv17_tv_create(connector, dcbent);
  98                         else
  99                                 ret = nv04_tv_create(connector, dcbent);
 100                         break;
 101                 default:
 102                         NV_WARN(drm, "DCB type %d not known\n", dcbent->type);
 103                         continue;
 104                 }
 105
 106                 if (ret)
 107                         continue;
 108         }
 109
 110         list_for_each_entry_safe(connector, ct,
 111                                  &dev->mode_config.connector_list, head) {
 112                 if (!connector->encoder_ids[0]) {
 113                         NV_WARN(drm, "%s has no encoders, removing\n",
 114                                 drm_get_connector_name(connector));
 115                         connector->funcs->destroy(connector);
 116                 }
 117         }
 118
 119         /* Save previous state */
 120         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 121                 crtc->funcs->save(crtc);
 122
 123         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 124                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 125
 126                 func->save(encoder);
 127         }
 128
 129         return 0;
 130 }
 131
 132 void
 133 nv04_display_destroy(struct drm_device *dev)
 134 {
 135         struct nouveau_drm *drm = nouveau_drm(dev);
 136         struct nv04_display *disp = nv04_display(dev);
 137         struct drm_encoder *encoder;
 138         struct drm_crtc *crtc;
 139
 140         NV_DEBUG(drm, "\n");
 141
 142         /* Turn every CRTC off. */
 143         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 144                 struct drm_mode_set modeset = {
 145                         .crtc = crtc,
 146                 };
 147
 148                 crtc->funcs->set_config(&modeset);
 149         }
 150
 151         /* Restore state */
 152         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 153                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 154
 155                 func->restore(encoder);
 156         }
 157
 158         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 159                 crtc->funcs->restore(crtc);
 160
 161         nouveau_hw_save_vga_fonts(dev, 0);
 162
 163         nouveau_display(dev)->priv = NULL;
 164         kfree(disp);
 165 }
 166
 167 int
 168 nv04_display_init(struct drm_device *dev)
 169 {
 170         struct drm_encoder *encoder;
 171         struct drm_crtc *crtc;
 172
 173         /* meh.. modeset apparently doesn't setup all the regs and depends
 174          * on pre-existing state, for now load the state of the card *before*
 175          * nouveau was loaded, and then do a modeset.
 176          *
 177          * best thing to do probably is to make save/restore routines not
 178          * save/restore "pre-load" state, but more general so we can save
 179          * on suspend too.
 180          */
 181         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 182                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 183
 184                 func->restore(encoder);
 185         }
 186
 187         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 188                 crtc->funcs->restore(crtc);
 189
 190         return 0;
 191 }
 192
 193 void
 194 nv04_display_fini(struct drm_device *dev)
 195 {
 196         /* disable vblank interrupts */
 197         NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
 198         if (nv_two_heads(dev))
 199                 NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
 200 }