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