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