kernel/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_create(struct drm_device *dev)
  36 {
  37         struct nouveau_drm *drm = nouveau_drm(dev);
  38         struct nvkm_i2c *i2c = nvxx_i2c(&drm->device);
  39         struct dcb_table *dcb = &drm->vbios.dcb;
  40         struct drm_connector *connector, *ct;
  41         struct drm_encoder *encoder;
  42         struct drm_crtc *crtc;
  43         struct nv04_display *disp;
  44         int i, ret;
  45
  46         disp = kzalloc(sizeof(*disp), GFP_KERNEL);
  47         if (!disp)
  48                 return -ENOMEM;
  49
  50         nvif_object_map(&drm->device.object);
  51
  52         nouveau_display(dev)->priv = disp;
  53         nouveau_display(dev)->dtor = nv04_display_destroy;
  54         nouveau_display(dev)->init = nv04_display_init;
  55         nouveau_display(dev)->fini = nv04_display_fini;
  56
  57         nouveau_hw_save_vga_fonts(dev, 1);
  58
  59         nv04_crtc_create(dev, 0);
  60         if (nv_two_heads(dev))
  61                 nv04_crtc_create(dev, 1);
  62
  63         for (i = 0; i < dcb->entries; i++) {
  64                 struct dcb_output *dcbent = &dcb->entry[i];
  65
  66                 connector = nouveau_connector_create(dev, dcbent->connector);
  67                 if (IS_ERR(connector))
  68                         continue;
  69
  70                 switch (dcbent->type) {
  71                 case DCB_OUTPUT_ANALOG:
  72                         ret = nv04_dac_create(connector, dcbent);
  73                         break;
  74                 case DCB_OUTPUT_LVDS:
  75                 case DCB_OUTPUT_TMDS:
  76                         ret = nv04_dfp_create(connector, dcbent);
  77                         break;
  78                 case DCB_OUTPUT_TV:
  79                         if (dcbent->location == DCB_LOC_ON_CHIP)
  80                                 ret = nv17_tv_create(connector, dcbent);
  81                         else
  82                                 ret = nv04_tv_create(connector, dcbent);
  83                         break;
  84                 default:
  85                         NV_WARN(drm, "DCB type %d not known\n", dcbent->type);
  86                         continue;
  87                 }
  88
  89                 if (ret)
  90                         continue;
  91         }
  92
  93         list_for_each_entry_safe(connector, ct,
  94                                  &dev->mode_config.connector_list, head) {
  95                 if (!connector->encoder_ids[0]) {
  96                         NV_WARN(drm, "%s has no encoders, removing\n",
  97                                 connector->name);
  98                         connector->funcs->destroy(connector);
  99                 }
 100         }
 101
 102         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 103                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 104                 struct nvkm_i2c_bus *bus =
 105                         nvkm_i2c_bus_find(i2c, nv_encoder->dcb->i2c_index);
 106                 nv_encoder->i2c = bus ? &bus->i2c : NULL;
 107         }
 108
 109         /* Save previous state */
 110         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 111                 crtc->funcs->save(crtc);
 112
 113         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 114                 const struct drm_encoder_helper_funcs *func = encoder->helper_private;
 115
 116                 func->save(encoder);
 117         }
 118
 119         nouveau_overlay_init(dev);
 120
 121         return 0;
 122 }
 123
 124 void
 125 nv04_display_destroy(struct drm_device *dev)
 126 {
 127         struct nv04_display *disp = nv04_display(dev);
 128         struct nouveau_drm *drm = nouveau_drm(dev);
 129         struct drm_encoder *encoder;
 130         struct drm_crtc *crtc;
 131
 132         /* Turn every CRTC off. */
 133         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 134                 struct drm_mode_set modeset = {
 135                         .crtc = crtc,
 136                 };
 137
 138                 drm_mode_set_config_internal(&modeset);
 139         }
 140
 141         /* Restore state */
 142         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 143                 const struct drm_encoder_helper_funcs *func = encoder->helper_private;
 144
 145                 func->restore(encoder);
 146         }
 147
 148         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 149                 crtc->funcs->restore(crtc);
 150
 151         nouveau_hw_save_vga_fonts(dev, 0);
 152
 153         nouveau_display(dev)->priv = NULL;
 154         kfree(disp);
 155
 156         nvif_object_unmap(&drm->device.object);
 157 }
 158
 159 int
 160 nv04_display_init(struct drm_device *dev)
 161 {
 162         struct drm_encoder *encoder;
 163         struct drm_crtc *crtc;
 164
 165         /* meh.. modeset apparently doesn't setup all the regs and depends
 166          * on pre-existing state, for now load the state of the card *before*
 167          * nouveau was loaded, and then do a modeset.
 168          *
 169          * best thing to do probably is to make save/restore routines not
 170          * save/restore "pre-load" state, but more general so we can save
 171          * on suspend too.
 172          */
 173         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 174                 const struct drm_encoder_helper_funcs *func = encoder->helper_private;
 175
 176                 func->restore(encoder);
 177         }
 178
 179         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 180                 crtc->funcs->restore(crtc);
 181
 182         return 0;
 183 }
 184
 185 void
 186 nv04_display_fini(struct drm_device *dev)
 187 {
 188         /* disable vblank interrupts */
 189         NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
 190         if (nv_two_heads(dev))
 191                 NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
 192 }