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         nv04_crtc_create(dev, 0);
 130         if (nv_two_heads(dev))
 131                 nv04_crtc_create(dev, 1);
 132
 133         for (i = 0; i < dcb->entries; i++) {
 134                 struct dcb_entry *dcbent = &dcb->entry[i];
 135
 136                 connector = nouveau_connector_create(dev, dcbent->connector);
 137                 if (IS_ERR(connector))
 138                         continue;
 139
 140                 switch (dcbent->type) {
 141                 case OUTPUT_ANALOG:
 142                         ret = nv04_dac_create(connector, dcbent);
 143                         break;
 144                 case OUTPUT_LVDS:
 145                 case OUTPUT_TMDS:
 146                         ret = nv04_dfp_create(connector, dcbent);
 147                         break;
 148                 case OUTPUT_TV:
 149                         if (dcbent->location == DCB_LOC_ON_CHIP)
 150                                 ret = nv17_tv_create(connector, dcbent);
 151                         else
 152                                 ret = nv04_tv_create(connector, dcbent);
 153                         break;
 154                 default:
 155                         NV_WARN(dev, "DCB type %d not known\n", dcbent->type);
 156                         continue;
 157                 }
 158
 159                 if (ret)
 160                         continue;
 161         }
 162
 163         list_for_each_entry_safe(connector, ct,
 164                                  &dev->mode_config.connector_list, head) {
 165                 if (!connector->encoder_ids[0]) {
 166                         NV_WARN(dev, "%s has no encoders, removing\n",
 167                                 drm_get_connector_name(connector));
 168                         connector->funcs->destroy(connector);
 169                 }
 170         }
 171
 172         /* Save previous state */
 173         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 174                 crtc->funcs->save(crtc);
 175
 176         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 177                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 178
 179                 func->save(encoder);
 180         }
 181
 182         nouveau_irq_register(dev, 24, nv04_vblank_crtc0_isr);
 183         nouveau_irq_register(dev, 25, nv04_vblank_crtc1_isr);
 184         return 0;
 185 }
 186
 187 void
 188 nv04_display_destroy(struct drm_device *dev)
 189 {
 190         struct drm_encoder *encoder;
 191         struct drm_crtc *crtc;
 192
 193         NV_DEBUG_KMS(dev, "\n");
 194
 195         nouveau_irq_unregister(dev, 24);
 196         nouveau_irq_unregister(dev, 25);
 197
 198         /* Turn every CRTC off. */
 199         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 200                 struct drm_mode_set modeset = {
 201                         .crtc = crtc,
 202                 };
 203
 204                 crtc->funcs->set_config(&modeset);
 205         }
 206
 207         /* Restore state */
 208         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 209                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 210
 211                 func->restore(encoder);
 212         }
 213
 214         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 215                 crtc->funcs->restore(crtc);
 216
 217         nouveau_hw_save_vga_fonts(dev, 0);
 218 }
 219
 220 int
 221 nv04_display_init(struct drm_device *dev)
 222 {
 223         struct drm_encoder *encoder;
 224         struct drm_crtc *crtc;
 225
 226         /* meh.. modeset apparently doesn't setup all the regs and depends
 227          * on pre-existing state, for now load the state of the card *before*
 228          * nouveau was loaded, and then do a modeset.
 229          *
 230          * best thing to do probably is to make save/restore routines not
 231          * save/restore "pre-load" state, but more general so we can save
 232          * on suspend too.
 233          */
 234         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 235                 struct drm_encoder_helper_funcs *func = encoder->helper_private;
 236
 237                 func->restore(encoder);
 238         }
 239
 240         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 241                 crtc->funcs->restore(crtc);
 242
 243         return 0;
 244 }
 245
 246 static void
 247 nv04_vblank_crtc0_isr(struct drm_device *dev)
 248 {
 249         nv_wr32(dev, NV_CRTC0_INTSTAT, NV_CRTC_INTR_VBLANK);
 250         drm_handle_vblank(dev, 0);
 251 }
 252
 253 static void
 254 nv04_vblank_crtc1_isr(struct drm_device *dev)
 255 {
 256         nv_wr32(dev, NV_CRTC1_INTSTAT, NV_CRTC_INTR_VBLANK);
 257         drm_handle_vblank(dev, 1);
 258 }