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 <core/object.h>
  26 #include <core/class.h>
  27
  28 #include <drm/drmP.h>
  29 #include <drm/drm_crtc_helper.h>
  30
  31 #include "nouveau_drm.h"
  32 #include "nouveau_reg.h"
  33 #include "nouveau_hw.h"
  34 #include "nouveau_encoder.h"
  35 #include "nouveau_connector.h"
  36
  37 #include <subdev/i2c.h>
  38
  39 int
  40 nv04_display_early_init(struct drm_device *dev)
  41 {
  42         /* ensure vblank interrupts are off, they can't be enabled until
  43          * drm_vblank has been initialised
  44          */
  45         NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
  46         if (nv_two_heads(dev))
  47                 NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
  48
  49         return 0;
  50 }
  51
  52 void
  53 nv04_display_late_takedown(struct drm_device *dev)
  54 {
  55 }
  56
  57 int
  58 nv04_display_create(struct drm_device *dev)
  59 {
  60         struct nouveau_drm *drm = nouveau_drm(dev);
  61         struct nouveau_i2c *i2c = nouveau_i2c(drm->device);
  62         struct dcb_table *dcb = &drm->vbios.dcb;
  63         struct drm_connector *connector, *ct;
  64         struct drm_encoder *encoder;
  65         struct drm_crtc *crtc;
  66         struct nv04_display *disp;
  67         int i, ret;
  68
  69         disp = kzalloc(sizeof(*disp), GFP_KERNEL);
  70         if (!disp)
  71                 return -ENOMEM;
  72
  73         nouveau_display(dev)->priv = disp;
  74         nouveau_display(dev)->dtor = nv04_display_destroy;
  75         nouveau_display(dev)->init = nv04_display_init;
  76         nouveau_display(dev)->fini = nv04_display_fini;
  77
  78         nouveau_hw_save_vga_fonts(dev, 1);
  79
  80         ret = nouveau_object_new(nv_object(drm), NVDRM_DEVICE, 0xd1500000,
  81                                  NV04_DISP_CLASS, NULL, 0, &disp->core);
  82         if (ret)
  83                 return ret;
  84
  85         nv04_crtc_create(dev, 0);
  86         if (nv_two_heads(dev))
  87                 nv04_crtc_create(dev, 1);
  88
  89         for (i = 0; i < dcb->entries; i++) {
  90                 struct dcb_output *dcbent = &dcb->entry[i];
  91
  92                 connector = nouveau_connector_create(dev, dcbent->connector);
  93                 if (IS_ERR(connector))
  94                         continue;
  95
  96                 switch (dcbent->type) {
  97                 case DCB_OUTPUT_ANALOG:
  98                         ret = nv04_dac_create(connector, dcbent);
  99                         break;
 100                 case DCB_OUTPUT_LVDS:
 101                 case DCB_OUTPUT_TMDS:
 102                         ret = nv04_dfp_create(connector, dcbent);
 103                         break;
 104                 case DCB_OUTPUT_TV:
 105                         if (dcbent->location == DCB_LOC_ON_CHIP)
 106                                 ret = nv17_tv_create(connector, dcbent);
 107                         else
 108                                 ret = nv04_tv_create(connector, dcbent);
 109                         break;
 110                 default:
 111                         NV_WARN(drm, "DCB type %d not known\n", dcbent->type);
 112                         continue;
 113                 }
 114
 115                 if (ret)
 116                         continue;
 117         }
 118
 119         list_for_each_entry_safe(connector, ct,
 120                                  &dev->mode_config.connector_list, head) {
 121                 if (!connector->encoder_ids[0]) {
 122                         NV_WARN(drm, "%s has no encoders, removing\n",
 123                                 drm_get_connector_name(connector));
 124                         connector->funcs->destroy(connector);
 125                 }
 126         }
 127
 128         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 129                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 130                 nv_encoder->i2c = i2c->find(i2c, nv_encoder->dcb->i2c_index);
 131         }
 132
 133         /* Save previous state */
 134         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 135                 crtc->funcs->save(crtc);
 136
 137         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 138                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 139
 140                 func->save(encoder);
 141         }
 142
 143         return 0;
 144 }
 145
 146 void
 147 nv04_display_destroy(struct drm_device *dev)
 148 {
 149         struct nv04_display *disp = nv04_display(dev);
 150         struct drm_encoder *encoder;
 151         struct drm_crtc *crtc;
 152
 153         /* Turn every CRTC off. */
 154         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 155                 struct drm_mode_set modeset = {
 156                         .crtc = crtc,
 157                 };
 158
 159                 drm_mode_set_config_internal(&modeset);
 160         }
 161
 162         /* Restore state */
 163         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 164                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 165
 166                 func->restore(encoder);
 167         }
 168
 169         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 170                 crtc->funcs->restore(crtc);
 171
 172         nouveau_hw_save_vga_fonts(dev, 0);
 173
 174         nouveau_display(dev)->priv = NULL;
 175         kfree(disp);
 176 }
 177
 178 int
 179 nv04_display_init(struct drm_device *dev)
 180 {
 181         struct drm_encoder *encoder;
 182         struct drm_crtc *crtc;
 183
 184         /* meh.. modeset apparently doesn't setup all the regs and depends
 185          * on pre-existing state, for now load the state of the card *before*
 186          * nouveau was loaded, and then do a modeset.
 187          *
 188          * best thing to do probably is to make save/restore routines not
 189          * save/restore "pre-load" state, but more general so we can save
 190          * on suspend too.
 191          */
 192         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 193                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 194
 195                 func->restore(encoder);
 196         }
 197
 198         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 199                 crtc->funcs->restore(crtc);
 200
 201         return 0;
 202 }
 203
 204 void
 205 nv04_display_fini(struct drm_device *dev)
 206 {
 207         /* disable vblank interrupts */
 208         NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
 209         if (nv_two_heads(dev))
 210                 NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
 211 }