drivers/gpu/drm/nouveau/nv50_sor.c

   1 /*
   2  * Copyright (C) 2008 Maarten Maathuis.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #include "drmP.h"
  28 #include "drm_crtc_helper.h"
  29
  30 #define NOUVEAU_DMA_DEBUG (nouveau_reg_debug & NOUVEAU_REG_DEBUG_EVO)
  31 #include "nouveau_reg.h"
  32 #include "nouveau_drv.h"
  33 #include "nouveau_dma.h"
  34 #include "nouveau_encoder.h"
  35 #include "nouveau_connector.h"
  36 #include "nouveau_crtc.h"
  37 #include "nv50_display.h"
  38
  39 static void
  40 nv50_sor_disconnect(struct drm_encoder *encoder)
  41 {
  42         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
  43         struct drm_device *dev = encoder->dev;
  44         struct drm_nouveau_private *dev_priv = dev->dev_private;
  45         struct nouveau_channel *evo = dev_priv->evo;
  46         int ret;
  47
  48         if (!nv_encoder->crtc)
  49                 return;
  50         nv50_crtc_blank(nouveau_crtc(nv_encoder->crtc), true);
  51
  52         NV_DEBUG_KMS(dev, "Disconnecting SOR %d\n", nv_encoder->or);
  53
  54         ret = RING_SPACE(evo, 4);
  55         if (ret) {
  56                 NV_ERROR(dev, "no space while disconnecting SOR\n");
  57                 return;
  58         }
  59         BEGIN_RING(evo, 0, NV50_EVO_SOR(nv_encoder->or, MODE_CTRL), 1);
  60         OUT_RING  (evo, 0);
  61         BEGIN_RING(evo, 0, NV50_EVO_UPDATE, 1);
  62         OUT_RING  (evo, 0);
  63
  64         nv_encoder->crtc = NULL;
  65         nv_encoder->last_dpms = DRM_MODE_DPMS_OFF;
  66 }
  67
  68 static void
  69 nv50_sor_dpms(struct drm_encoder *encoder, int mode)
  70 {
  71         struct drm_device *dev = encoder->dev;
  72         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
  73         struct drm_encoder *enc;
  74         uint32_t val;
  75         int or = nv_encoder->or;
  76
  77         NV_DEBUG_KMS(dev, "or %d type %d mode %d\n", or, nv_encoder->dcb->type, mode);
  78
  79         nv_encoder->last_dpms = mode;
  80         list_for_each_entry(enc, &dev->mode_config.encoder_list, head) {
  81                 struct nouveau_encoder *nvenc = nouveau_encoder(enc);
  82
  83                 if (nvenc == nv_encoder ||
  84                     (nvenc->dcb->type != OUTPUT_TMDS &&
  85                      nvenc->dcb->type != OUTPUT_LVDS &&
  86                      nvenc->dcb->type != OUTPUT_DP) ||
  87                     nvenc->dcb->or != nv_encoder->dcb->or)
  88                         continue;
  89
  90                 if (nvenc->last_dpms == DRM_MODE_DPMS_ON)
  91                         return;
  92         }
  93
  94         /* wait for it to be done */
  95         if (!nv_wait(NV50_PDISPLAY_SOR_DPMS_CTRL(or),
  96                      NV50_PDISPLAY_SOR_DPMS_CTRL_PENDING, 0)) {
  97                 NV_ERROR(dev, "timeout: SOR_DPMS_CTRL_PENDING(%d) == 0\n", or);
  98                 NV_ERROR(dev, "SOR_DPMS_CTRL(%d) = 0x%08x\n", or,
  99                          nv_rd32(dev, NV50_PDISPLAY_SOR_DPMS_CTRL(or)));
 100         }
 101
 102         val = nv_rd32(dev, NV50_PDISPLAY_SOR_DPMS_CTRL(or));
 103
 104         if (mode == DRM_MODE_DPMS_ON)
 105                 val |= NV50_PDISPLAY_SOR_DPMS_CTRL_ON;
 106         else
 107                 val &= ~NV50_PDISPLAY_SOR_DPMS_CTRL_ON;
 108
 109         nv_wr32(dev, NV50_PDISPLAY_SOR_DPMS_CTRL(or), val |
 110                 NV50_PDISPLAY_SOR_DPMS_CTRL_PENDING);
 111         if (!nv_wait(NV50_PDISPLAY_SOR_DPMS_STATE(or),
 112                      NV50_PDISPLAY_SOR_DPMS_STATE_WAIT, 0)) {
 113                 NV_ERROR(dev, "timeout: SOR_DPMS_STATE_WAIT(%d) == 0\n", or);
 114                 NV_ERROR(dev, "SOR_DPMS_STATE(%d) = 0x%08x\n", or,
 115                          nv_rd32(dev, NV50_PDISPLAY_SOR_DPMS_STATE(or)));
 116         }
 117
 118         if (nv_encoder->dcb->type == OUTPUT_DP && mode == DRM_MODE_DPMS_ON)
 119                 nouveau_dp_link_train(encoder);
 120 }
 121
 122 static void
 123 nv50_sor_save(struct drm_encoder *encoder)
 124 {
 125         NV_ERROR(encoder->dev, "!!\n");
 126 }
 127
 128 static void
 129 nv50_sor_restore(struct drm_encoder *encoder)
 130 {
 131         NV_ERROR(encoder->dev, "!!\n");
 132 }
 133
 134 static bool
 135 nv50_sor_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode,
 136                     struct drm_display_mode *adjusted_mode)
 137 {
 138         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 139         struct nouveau_connector *connector;
 140
 141         NV_DEBUG_KMS(encoder->dev, "or %d\n", nv_encoder->or);
 142
 143         connector = nouveau_encoder_connector_get(nv_encoder);
 144         if (!connector) {
 145                 NV_ERROR(encoder->dev, "Encoder has no connector\n");
 146                 return false;
 147         }
 148
 149         if (connector->scaling_mode != DRM_MODE_SCALE_NONE &&
 150              connector->native_mode) {
 151                 int id = adjusted_mode->base.id;
 152                 *adjusted_mode = *connector->native_mode;
 153                 adjusted_mode->base.id = id;
 154         }
 155
 156         return true;
 157 }
 158
 159 static void
 160 nv50_sor_prepare(struct drm_encoder *encoder)
 161 {
 162 }
 163
 164 static void
 165 nv50_sor_commit(struct drm_encoder *encoder)
 166 {
 167 }
 168
 169 static void
 170 nv50_sor_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
 171                   struct drm_display_mode *adjusted_mode)
 172 {
 173         struct drm_nouveau_private *dev_priv = encoder->dev->dev_private;
 174         struct nouveau_channel *evo = dev_priv->evo;
 175         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 176         struct drm_device *dev = encoder->dev;
 177         struct nouveau_crtc *crtc = nouveau_crtc(encoder->crtc);
 178         uint32_t mode_ctl = 0;
 179         int ret;
 180
 181         NV_DEBUG_KMS(dev, "or %d type %d -> crtc %d\n",
 182                      nv_encoder->or, nv_encoder->dcb->type, crtc->index);
 183
 184         nv50_sor_dpms(encoder, DRM_MODE_DPMS_ON);
 185
 186         switch (nv_encoder->dcb->type) {
 187         case OUTPUT_TMDS:
 188                 if (nv_encoder->dcb->sorconf.link & 1) {
 189                         if (adjusted_mode->clock < 165000)
 190                                 mode_ctl = 0x0100;
 191                         else
 192                                 mode_ctl = 0x0500;
 193                 } else
 194                         mode_ctl = 0x0200;
 195                 break;
 196         case OUTPUT_DP:
 197                 mode_ctl |= (nv_encoder->dp.mc_unknown << 16);
 198                 if (nv_encoder->dcb->sorconf.link & 1)
 199                         mode_ctl |= 0x00000800;
 200                 else
 201                         mode_ctl |= 0x00000900;
 202                 break;
 203         default:
 204                 break;
 205         }
 206
 207         if (crtc->index == 1)
 208                 mode_ctl |= NV50_EVO_SOR_MODE_CTRL_CRTC1;
 209         else
 210                 mode_ctl |= NV50_EVO_SOR_MODE_CTRL_CRTC0;
 211
 212         if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
 213                 mode_ctl |= NV50_EVO_SOR_MODE_CTRL_NHSYNC;
 214
 215         if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
 216                 mode_ctl |= NV50_EVO_SOR_MODE_CTRL_NVSYNC;
 217
 218         ret = RING_SPACE(evo, 2);
 219         if (ret) {
 220                 NV_ERROR(dev, "no space while connecting SOR\n");
 221                 return;
 222         }
 223         BEGIN_RING(evo, 0, NV50_EVO_SOR(nv_encoder->or, MODE_CTRL), 1);
 224         OUT_RING(evo, mode_ctl);
 225
 226         nv_encoder->crtc = encoder->crtc;
 227 }
 228
 229 static struct drm_crtc *
 230 nv50_sor_crtc_get(struct drm_encoder *encoder)
 231 {
 232         return nouveau_encoder(encoder)->crtc;
 233 }
 234
 235 static const struct drm_encoder_helper_funcs nv50_sor_helper_funcs = {
 236         .dpms = nv50_sor_dpms,
 237         .save = nv50_sor_save,
 238         .restore = nv50_sor_restore,
 239         .mode_fixup = nv50_sor_mode_fixup,
 240         .prepare = nv50_sor_prepare,
 241         .commit = nv50_sor_commit,
 242         .mode_set = nv50_sor_mode_set,
 243         .get_crtc = nv50_sor_crtc_get,
 244         .detect = NULL,
 245         .disable = nv50_sor_disconnect
 246 };
 247
 248 static void
 249 nv50_sor_destroy(struct drm_encoder *encoder)
 250 {
 251         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 252
 253         if (!encoder)
 254                 return;
 255
 256         NV_DEBUG_KMS(encoder->dev, "\n");
 257
 258         drm_encoder_cleanup(encoder);
 259
 260         kfree(nv_encoder);
 261 }
 262
 263 static const struct drm_encoder_funcs nv50_sor_encoder_funcs = {
 264         .destroy = nv50_sor_destroy,
 265 };
 266
 267 int
 268 nv50_sor_create(struct drm_connector *connector, struct dcb_entry *entry)
 269 {
 270         struct nouveau_encoder *nv_encoder = NULL;
 271         struct drm_device *dev = connector->dev;
 272         struct drm_encoder *encoder;
 273         int type;
 274
 275         NV_DEBUG_KMS(dev, "\n");
 276
 277         switch (entry->type) {
 278         case OUTPUT_TMDS:
 279         case OUTPUT_DP:
 280                 type = DRM_MODE_ENCODER_TMDS;
 281                 break;
 282         case OUTPUT_LVDS:
 283                 type = DRM_MODE_ENCODER_LVDS;
 284                 break;
 285         default:
 286                 return -EINVAL;
 287         }
 288
 289         nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
 290         if (!nv_encoder)
 291                 return -ENOMEM;
 292         encoder = to_drm_encoder(nv_encoder);
 293
 294         nv_encoder->dcb = entry;
 295         nv_encoder->or = ffs(entry->or) - 1;
 296         nv_encoder->last_dpms = DRM_MODE_DPMS_OFF;
 297
 298         drm_encoder_init(dev, encoder, &nv50_sor_encoder_funcs, type);
 299         drm_encoder_helper_add(encoder, &nv50_sor_helper_funcs);
 300
 301         encoder->possible_crtcs = entry->heads;
 302         encoder->possible_clones = 0;
 303
 304         if (nv_encoder->dcb->type == OUTPUT_DP) {
 305                 int or = nv_encoder->or, link = !(entry->dpconf.sor.link & 1);
 306                 uint32_t tmp;
 307
 308                 tmp = nv_rd32(dev, 0x61c700 + (or * 0x800));
 309
 310                 switch ((tmp & 0x00000f00) >> 8) {
 311                 case 8:
 312                 case 9:
 313                         nv_encoder->dp.mc_unknown = (tmp & 0x000f0000) >> 16;
 314                         tmp = nv_rd32(dev, NV50_SOR_DP_CTRL(or, link));
 315                         nv_encoder->dp.unk0 = tmp & 0x000001fc;
 316                         tmp = nv_rd32(dev, NV50_SOR_DP_UNK128(or, link));
 317                         nv_encoder->dp.unk1 = tmp & 0x010f7f3f;
 318                         break;
 319                 default:
 320                         break;
 321                 }
 322
 323                 if (!nv_encoder->dp.mc_unknown)
 324                         nv_encoder->dp.mc_unknown = 5;
 325         }
 326
 327         drm_mode_connector_attach_encoder(connector, encoder);
 328         return 0;
 329 }