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 "drmP.h"
  26 #include "drm.h"
  27 #include "drm_crtc_helper.h"
  28
  29 #include "nouveau_drv.h"
  30 #include "nouveau_fb.h"
  31 #include "nouveau_hw.h"
  32 #include "nouveau_encoder.h"
  33 #include "nouveau_connector.h"
  34
  35 static void nv04_vblank_crtc0_isr(struct drm_device *);
  36 static void nv04_vblank_crtc1_isr(struct drm_device *);
  37
  38 static void
  39 nv04_display_store_initial_head_owner(struct drm_device *dev)
  40 {
  41         struct drm_nouveau_private *dev_priv = dev->dev_private;
  42
  43         if (dev_priv->chipset != 0x11) {
  44                 dev_priv->crtc_owner = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_44);
  45                 return;
  46         }
  47
  48         /* reading CR44 is broken on nv11, so we attempt to infer it */
  49         if (nvReadMC(dev, NV_PBUS_DEBUG_1) & (1 << 28)) /* heads tied, restore both */
  50                 dev_priv->crtc_owner = 0x4;
  51         else {
  52                 uint8_t slaved_on_A, slaved_on_B;
  53                 bool tvA = false;
  54                 bool tvB = false;
  55
  56                 slaved_on_B = NVReadVgaCrtc(dev, 1, NV_CIO_CRE_PIXEL_INDEX) &
  57                                                                         0x80;
  58                 if (slaved_on_B)
  59                         tvB = !(NVReadVgaCrtc(dev, 1, NV_CIO_CRE_LCD__INDEX) &
  60                                         MASK(NV_CIO_CRE_LCD_LCD_SELECT));
  61
  62                 slaved_on_A = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_PIXEL_INDEX) &
  63                                                                         0x80;
  64                 if (slaved_on_A)
  65                         tvA = !(NVReadVgaCrtc(dev, 0, NV_CIO_CRE_LCD__INDEX) &
  66                                         MASK(NV_CIO_CRE_LCD_LCD_SELECT));
  67
  68                 if (slaved_on_A && !tvA)
  69                         dev_priv->crtc_owner = 0x0;
  70                 else if (slaved_on_B && !tvB)
  71                         dev_priv->crtc_owner = 0x3;
  72                 else if (slaved_on_A)
  73                         dev_priv->crtc_owner = 0x0;
  74                 else if (slaved_on_B)
  75                         dev_priv->crtc_owner = 0x3;
  76                 else
  77                         dev_priv->crtc_owner = 0x0;
  78         }
  79 }
  80
  81 int
  82 nv04_display_early_init(struct drm_device *dev)
  83 {
  84         /* Make the I2C buses accessible. */
  85         if (!nv_gf4_disp_arch(dev)) {
  86                 uint32_t pmc_enable = nv_rd32(dev, NV03_PMC_ENABLE);
  87
  88                 if (!(pmc_enable & 1))
  89                         nv_wr32(dev, NV03_PMC_ENABLE, pmc_enable | 1);
  90         }
  91
  92         /* Unlock the VGA CRTCs. */
  93         NVLockVgaCrtcs(dev, false);
  94
  95         /* Make sure the CRTCs aren't in slaved mode. */
  96         if (nv_two_heads(dev)) {
  97                 nv04_display_store_initial_head_owner(dev);
  98                 NVSetOwner(dev, 0);
  99         }
 100
 101         return 0;
 102 }
 103
 104 void
 105 nv04_display_late_takedown(struct drm_device *dev)
 106 {
 107         struct drm_nouveau_private *dev_priv = dev->dev_private;
 108
 109         if (nv_two_heads(dev))
 110                 NVSetOwner(dev, dev_priv->crtc_owner);
 111
 112         NVLockVgaCrtcs(dev, true);
 113 }
 114
 115 int
 116 nv04_display_create(struct drm_device *dev)
 117 {
 118         struct drm_nouveau_private *dev_priv = dev->dev_private;
 119         struct dcb_table *dcb = &dev_priv->vbios.dcb;
 120         struct drm_connector *connector, *ct;
 121         struct drm_encoder *encoder;
 122         struct drm_crtc *crtc;
 123         int i, ret;
 124
 125         NV_DEBUG_KMS(dev, "\n");
 126
 127         nouveau_hw_save_vga_fonts(dev, 1);
 128
 129         drm_mode_config_init(dev);
 130         drm_mode_create_scaling_mode_property(dev);
 131         drm_mode_create_dithering_property(dev);
 132
 133         dev->mode_config.funcs = (void *)&nouveau_mode_config_funcs;
 134
 135         dev->mode_config.min_width = 0;
 136         dev->mode_config.min_height = 0;
 137         switch (dev_priv->card_type) {
 138         case NV_04:
 139                 dev->mode_config.max_width = 2048;
 140                 dev->mode_config.max_height = 2048;
 141                 break;
 142         default:
 143                 dev->mode_config.max_width = 4096;
 144                 dev->mode_config.max_height = 4096;
 145                 break;
 146         }
 147
 148         dev->mode_config.fb_base = dev_priv->fb_phys;
 149
 150         nv04_crtc_create(dev, 0);
 151         if (nv_two_heads(dev))
 152                 nv04_crtc_create(dev, 1);
 153
 154         for (i = 0; i < dcb->entries; i++) {
 155                 struct dcb_entry *dcbent = &dcb->entry[i];
 156
 157                 connector = nouveau_connector_create(dev, dcbent->connector);
 158                 if (IS_ERR(connector))
 159                         continue;
 160
 161                 switch (dcbent->type) {
 162                 case OUTPUT_ANALOG:
 163                         ret = nv04_dac_create(connector, dcbent);
 164                         break;
 165                 case OUTPUT_LVDS:
 166                 case OUTPUT_TMDS:
 167                         ret = nv04_dfp_create(connector, dcbent);
 168                         break;
 169                 case OUTPUT_TV:
 170                         if (dcbent->location == DCB_LOC_ON_CHIP)
 171                                 ret = nv17_tv_create(connector, dcbent);
 172                         else
 173                                 ret = nv04_tv_create(connector, dcbent);
 174                         break;
 175                 default:
 176                         NV_WARN(dev, "DCB type %d not known\n", dcbent->type);
 177                         continue;
 178                 }
 179
 180                 if (ret)
 181                         continue;
 182         }
 183
 184         list_for_each_entry_safe(connector, ct,
 185                                  &dev->mode_config.connector_list, head) {
 186                 if (!connector->encoder_ids[0]) {
 187                         NV_WARN(dev, "%s has no encoders, removing\n",
 188                                 drm_get_connector_name(connector));
 189                         connector->funcs->destroy(connector);
 190                 }
 191         }
 192
 193         /* Save previous state */
 194         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 195                 crtc->funcs->save(crtc);
 196
 197         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 198                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 199
 200                 func->save(encoder);
 201         }
 202
 203         nouveau_irq_register(dev, 24, nv04_vblank_crtc0_isr);
 204         nouveau_irq_register(dev, 25, nv04_vblank_crtc1_isr);
 205         return 0;
 206 }
 207
 208 void
 209 nv04_display_destroy(struct drm_device *dev)
 210 {
 211         struct drm_encoder *encoder;
 212         struct drm_crtc *crtc;
 213
 214         NV_DEBUG_KMS(dev, "\n");
 215
 216         nouveau_irq_unregister(dev, 24);
 217         nouveau_irq_unregister(dev, 25);
 218
 219         /* Turn every CRTC off. */
 220         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 221                 struct drm_mode_set modeset = {
 222                         .crtc = crtc,
 223                 };
 224
 225                 crtc->funcs->set_config(&modeset);
 226         }
 227
 228         /* Restore state */
 229         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 230                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 231
 232                 func->restore(encoder);
 233         }
 234
 235         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 236                 crtc->funcs->restore(crtc);
 237
 238         drm_mode_config_cleanup(dev);
 239
 240         nouveau_hw_save_vga_fonts(dev, 0);
 241 }
 242
 243 int
 244 nv04_display_init(struct drm_device *dev)
 245 {
 246         struct drm_encoder *encoder;
 247         struct drm_crtc *crtc;
 248
 249         /* meh.. modeset apparently doesn't setup all the regs and depends
 250          * on pre-existing state, for now load the state of the card *before*
 251          * nouveau was loaded, and then do a modeset.
 252          *
 253          * best thing to do probably is to make save/restore routines not
 254          * save/restore "pre-load" state, but more general so we can save
 255          * on suspend too.
 256          */
 257         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 258                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 259
 260                 func->restore(encoder);
 261         }
 262
 263         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 264                 crtc->funcs->restore(crtc);
 265
 266         return 0;
 267 }
 268
 269 static void
 270 nv04_vblank_crtc0_isr(struct drm_device *dev)
 271 {
 272         nv_wr32(dev, NV_CRTC0_INTSTAT, NV_CRTC_INTR_VBLANK);
 273         drm_handle_vblank(dev, 0);
 274 }
 275
 276 static void
 277 nv04_vblank_crtc1_isr(struct drm_device *dev)
 278 {
 279         nv_wr32(dev, NV_CRTC1_INTSTAT, NV_CRTC_INTR_VBLANK);
 280         drm_handle_vblank(dev, 1);
 281 }