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 static void
  35 nv04_display_fini(struct drm_device *dev)
  36 {
  37         /* Disable vblank interrupts. */
  38         NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
  39         if (nv_two_heads(dev))
  40                 NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
  41 }
  42
  43 static int
  44 nv04_display_init(struct drm_device *dev)
  45 {
  46         struct nouveau_encoder *encoder;
  47         struct nouveau_crtc *crtc;
  48
  49         /* meh.. modeset apparently doesn't setup all the regs and depends
  50          * on pre-existing state, for now load the state of the card *before*
  51          * nouveau was loaded, and then do a modeset.
  52          *
  53          * best thing to do probably is to make save/restore routines not
  54          * save/restore "pre-load" state, but more general so we can save
  55          * on suspend too.
  56          */
  57         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head)
  58                 crtc->save(&crtc->base);
  59
  60         list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
  61                 encoder->enc_save(&encoder->base.base);
  62
  63         return 0;
  64 }
  65
  66 static void
  67 nv04_display_destroy(struct drm_device *dev)
  68 {
  69         struct nv04_display *disp = nv04_display(dev);
  70         struct nouveau_drm *drm = nouveau_drm(dev);
  71         struct nouveau_encoder *encoder;
  72         struct nouveau_crtc *nv_crtc;
  73
  74         /* Restore state */
  75         list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
  76                 encoder->enc_restore(&encoder->base.base);
  77
  78         list_for_each_entry(nv_crtc, &dev->mode_config.crtc_list, base.head)
  79                 nv_crtc->restore(&nv_crtc->base);
  80
  81         nouveau_hw_save_vga_fonts(dev, 0);
  82
  83         nouveau_display(dev)->priv = NULL;
  84         kfree(disp);
  85
  86         nvif_object_unmap(&drm->client.device.object);
  87 }
  88
  89 int
  90 nv04_display_create(struct drm_device *dev)
  91 {
  92         struct nouveau_drm *drm = nouveau_drm(dev);
  93         struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
  94         struct dcb_table *dcb = &drm->vbios.dcb;
  95         struct drm_connector *connector, *ct;
  96         struct drm_encoder *encoder;
  97         struct nouveau_encoder *nv_encoder;
  98         struct nouveau_crtc *crtc;
  99         struct nv04_display *disp;
 100         int i, ret;
 101
 102         disp = kzalloc(sizeof(*disp), GFP_KERNEL);
 103         if (!disp)
 104                 return -ENOMEM;
 105
 106         nvif_object_map(&drm->client.device.object, NULL, 0);
 107
 108         nouveau_display(dev)->priv = disp;
 109         nouveau_display(dev)->dtor = nv04_display_destroy;
 110         nouveau_display(dev)->init = nv04_display_init;
 111         nouveau_display(dev)->fini = nv04_display_fini;
 112
 113         /* Pre-nv50 doesn't support atomic, so don't expose the ioctls */
 114         dev->driver->driver_features &= ~DRIVER_ATOMIC;
 115
 116         nouveau_hw_save_vga_fonts(dev, 1);
 117
 118         nv04_crtc_create(dev, 0);
 119         if (nv_two_heads(dev))
 120                 nv04_crtc_create(dev, 1);
 121
 122         for (i = 0; i < dcb->entries; i++) {
 123                 struct dcb_output *dcbent = &dcb->entry[i];
 124
 125                 connector = nouveau_connector_create(dev, dcbent);
 126                 if (IS_ERR(connector))
 127                         continue;
 128
 129                 switch (dcbent->type) {
 130                 case DCB_OUTPUT_ANALOG:
 131                         ret = nv04_dac_create(connector, dcbent);
 132                         break;
 133                 case DCB_OUTPUT_LVDS:
 134                 case DCB_OUTPUT_TMDS:
 135                         ret = nv04_dfp_create(connector, dcbent);
 136                         break;
 137                 case DCB_OUTPUT_TV:
 138                         if (dcbent->location == DCB_LOC_ON_CHIP)
 139                                 ret = nv17_tv_create(connector, dcbent);
 140                         else
 141                                 ret = nv04_tv_create(connector, dcbent);
 142                         break;
 143                 default:
 144                         NV_WARN(drm, "DCB type %d not known\n", dcbent->type);
 145                         continue;
 146                 }
 147
 148                 if (ret)
 149                         continue;
 150         }
 151
 152         list_for_each_entry_safe(connector, ct,
 153                                  &dev->mode_config.connector_list, head) {
 154                 if (!connector->encoder_ids[0]) {
 155                         NV_WARN(drm, "%s has no encoders, removing\n",
 156                                 connector->name);
 157                         connector->funcs->destroy(connector);
 158                 }
 159         }
 160
 161         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 162                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 163                 struct nvkm_i2c_bus *bus =
 164                         nvkm_i2c_bus_find(i2c, nv_encoder->dcb->i2c_index);
 165                 nv_encoder->i2c = bus ? &bus->i2c : NULL;
 166         }
 167
 168         /* Save previous state */
 169         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head)
 170                 crtc->save(&crtc->base);
 171
 172         list_for_each_entry(nv_encoder, &dev->mode_config.encoder_list, base.base.head)
 173                 nv_encoder->enc_save(&nv_encoder->base.base);
 174
 175         nouveau_overlay_init(dev);
 176
 177         return 0;
 178 }