linux/drivers/gpu/drm/nouveau/dispnv04/disp.c
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   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
  34int
  35nv04_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
 122void
 123nv04_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
 145int
 146nv04_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
 168void
 169nv04_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}
 176