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