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 nouveau_encoder *nv_encoder)
  41 {
  42         struct drm_device *dev = to_drm_encoder(nv_encoder)->dev;
  43         struct drm_nouveau_private *dev_priv = dev->dev_private;
  44         struct nouveau_channel *evo = dev_priv->evo;
  45         int ret;
  46
  47         NV_DEBUG_KMS(dev, "Disconnecting SOR %d\n", nv_encoder->or);
  48
  49         ret = RING_SPACE(evo, 2);
  50         if (ret) {
  51                 NV_ERROR(dev, "no space while disconnecting SOR\n");
  52                 return;
  53         }
  54         BEGIN_RING(evo, 0, NV50_EVO_SOR(nv_encoder->or, MODE_CTRL), 1);
  55         OUT_RING(evo, 0);
  56 }
  57
  58 static void
  59 nv50_sor_dp_link_train(struct drm_encoder *encoder)
  60 {
  61         struct drm_device *dev = encoder->dev;
  62         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
  63         struct bit_displayport_encoder_table *dpe;
  64         int dpe_headerlen;
  65
  66         dpe = nouveau_bios_dp_table(dev, nv_encoder->dcb, &dpe_headerlen);
  67         if (!dpe) {
  68                 NV_ERROR(dev, "SOR-%d: no DP encoder table!\n", nv_encoder->or);
  69                 return;
  70         }
  71
  72         if (dpe->script0) {
  73                 NV_DEBUG_KMS(dev, "SOR-%d: running DP script 0\n", nv_encoder->or);
  74                 nouveau_bios_run_init_table(dev, le16_to_cpu(dpe->script0),
  75                                             nv_encoder->dcb);
  76         }
  77
  78         if (!nouveau_dp_link_train(encoder))
  79                 NV_ERROR(dev, "SOR-%d: link training failed\n", nv_encoder->or);
  80
  81         if (dpe->script1) {
  82                 NV_DEBUG_KMS(dev, "SOR-%d: running DP script 1\n", nv_encoder->or);
  83                 nouveau_bios_run_init_table(dev, le16_to_cpu(dpe->script1),
  84                                             nv_encoder->dcb);
  85         }
  86 }
  87
  88 static void
  89 nv50_sor_dpms(struct drm_encoder *encoder, int mode)
  90 {
  91         struct drm_device *dev = encoder->dev;
  92         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
  93         struct drm_encoder *enc;
  94         uint32_t val;
  95         int or = nv_encoder->or;
  96
  97         NV_DEBUG_KMS(dev, "or %d mode %d\n", or, mode);
  98
  99         nv_encoder->last_dpms = mode;
 100         list_for_each_entry(enc, &dev->mode_config.encoder_list, head) {
 101                 struct nouveau_encoder *nvenc = nouveau_encoder(enc);
 102
 103                 if (nvenc == nv_encoder ||
 104                     nvenc->dcb->or != nv_encoder->dcb->or)
 105                         continue;
 106
 107                 if (nvenc->last_dpms == DRM_MODE_DPMS_ON)
 108                         return;
 109         }
 110
 111         /* wait for it to be done */
 112         if (!nv_wait(NV50_PDISPLAY_SOR_DPMS_CTRL(or),
 113                      NV50_PDISPLAY_SOR_DPMS_CTRL_PENDING, 0)) {
 114                 NV_ERROR(dev, "timeout: SOR_DPMS_CTRL_PENDING(%d) == 0\n", or);
 115                 NV_ERROR(dev, "SOR_DPMS_CTRL(%d) = 0x%08x\n", or,
 116                          nv_rd32(dev, NV50_PDISPLAY_SOR_DPMS_CTRL(or)));
 117         }
 118
 119         val = nv_rd32(dev, NV50_PDISPLAY_SOR_DPMS_CTRL(or));
 120
 121         if (mode == DRM_MODE_DPMS_ON)
 122                 val |= NV50_PDISPLAY_SOR_DPMS_CTRL_ON;
 123         else
 124                 val &= ~NV50_PDISPLAY_SOR_DPMS_CTRL_ON;
 125
 126         nv_wr32(dev, NV50_PDISPLAY_SOR_DPMS_CTRL(or), val |
 127                 NV50_PDISPLAY_SOR_DPMS_CTRL_PENDING);
 128         if (!nv_wait(NV50_PDISPLAY_SOR_DPMS_STATE(or),
 129                      NV50_PDISPLAY_SOR_DPMS_STATE_WAIT, 0)) {
 130                 NV_ERROR(dev, "timeout: SOR_DPMS_STATE_WAIT(%d) == 0\n", or);
 131                 NV_ERROR(dev, "SOR_DPMS_STATE(%d) = 0x%08x\n", or,
 132                          nv_rd32(dev, NV50_PDISPLAY_SOR_DPMS_STATE(or)));
 133         }
 134
 135         if (nv_encoder->dcb->type == OUTPUT_DP && mode == DRM_MODE_DPMS_ON)
 136                 nv50_sor_dp_link_train(encoder);
 137 }
 138
 139 static void
 140 nv50_sor_save(struct drm_encoder *encoder)
 141 {
 142         NV_ERROR(encoder->dev, "!!\n");
 143 }
 144
 145 static void
 146 nv50_sor_restore(struct drm_encoder *encoder)
 147 {
 148         NV_ERROR(encoder->dev, "!!\n");
 149 }
 150
 151 static bool
 152 nv50_sor_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode,
 153                     struct drm_display_mode *adjusted_mode)
 154 {
 155         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 156         struct nouveau_connector *connector;
 157
 158         NV_DEBUG_KMS(encoder->dev, "or %d\n", nv_encoder->or);
 159
 160         connector = nouveau_encoder_connector_get(nv_encoder);
 161         if (!connector) {
 162                 NV_ERROR(encoder->dev, "Encoder has no connector\n");
 163                 return false;
 164         }
 165
 166         if (connector->scaling_mode != DRM_MODE_SCALE_NONE &&
 167              connector->native_mode) {
 168                 int id = adjusted_mode->base.id;
 169                 *adjusted_mode = *connector->native_mode;
 170                 adjusted_mode->base.id = id;
 171         }
 172
 173         return true;
 174 }
 175
 176 static void
 177 nv50_sor_prepare(struct drm_encoder *encoder)
 178 {
 179 }
 180
 181 static void
 182 nv50_sor_commit(struct drm_encoder *encoder)
 183 {
 184 }
 185
 186 static void
 187 nv50_sor_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
 188                   struct drm_display_mode *adjusted_mode)
 189 {
 190         struct drm_nouveau_private *dev_priv = encoder->dev->dev_private;
 191         struct nouveau_channel *evo = dev_priv->evo;
 192         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 193         struct drm_device *dev = encoder->dev;
 194         struct nouveau_crtc *crtc = nouveau_crtc(encoder->crtc);
 195         uint32_t mode_ctl = 0;
 196         int ret;
 197
 198         NV_DEBUG_KMS(dev, "or %d\n", nv_encoder->or);
 199
 200         nv50_sor_dpms(encoder, DRM_MODE_DPMS_ON);
 201
 202         switch (nv_encoder->dcb->type) {
 203         case OUTPUT_TMDS:
 204                 if (nv_encoder->dcb->sorconf.link & 1) {
 205                         if (adjusted_mode->clock < 165000)
 206                                 mode_ctl = 0x0100;
 207                         else
 208                                 mode_ctl = 0x0500;
 209                 } else
 210                         mode_ctl = 0x0200;
 211                 break;
 212         case OUTPUT_DP:
 213                 mode_ctl |= 0x00050000;
 214                 if (nv_encoder->dcb->sorconf.link & 1)
 215                         mode_ctl |= 0x00000800;
 216                 else
 217                         mode_ctl |= 0x00000900;
 218                 break;
 219         default:
 220                 break;
 221         }
 222
 223         if (crtc->index == 1)
 224                 mode_ctl |= NV50_EVO_SOR_MODE_CTRL_CRTC1;
 225         else
 226                 mode_ctl |= NV50_EVO_SOR_MODE_CTRL_CRTC0;
 227
 228         if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
 229                 mode_ctl |= NV50_EVO_SOR_MODE_CTRL_NHSYNC;
 230
 231         if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
 232                 mode_ctl |= NV50_EVO_SOR_MODE_CTRL_NVSYNC;
 233
 234         ret = RING_SPACE(evo, 2);
 235         if (ret) {
 236                 NV_ERROR(dev, "no space while connecting SOR\n");
 237                 return;
 238         }
 239         BEGIN_RING(evo, 0, NV50_EVO_SOR(nv_encoder->or, MODE_CTRL), 1);
 240         OUT_RING(evo, mode_ctl);
 241 }
 242
 243 static const struct drm_encoder_helper_funcs nv50_sor_helper_funcs = {
 244         .dpms = nv50_sor_dpms,
 245         .save = nv50_sor_save,
 246         .restore = nv50_sor_restore,
 247         .mode_fixup = nv50_sor_mode_fixup,
 248         .prepare = nv50_sor_prepare,
 249         .commit = nv50_sor_commit,
 250         .mode_set = nv50_sor_mode_set,
 251         .detect = NULL
 252 };
 253
 254 static void
 255 nv50_sor_destroy(struct drm_encoder *encoder)
 256 {
 257         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 258
 259         if (!encoder)
 260                 return;
 261
 262         NV_DEBUG_KMS(encoder->dev, "\n");
 263
 264         drm_encoder_cleanup(encoder);
 265
 266         kfree(nv_encoder);
 267 }
 268
 269 static const struct drm_encoder_funcs nv50_sor_encoder_funcs = {
 270         .destroy = nv50_sor_destroy,
 271 };
 272
 273 int
 274 nv50_sor_create(struct drm_device *dev, struct dcb_entry *entry)
 275 {
 276         struct nouveau_encoder *nv_encoder = NULL;
 277         struct drm_encoder *encoder;
 278         bool dum;
 279         int type;
 280
 281         NV_DEBUG_KMS(dev, "\n");
 282
 283         switch (entry->type) {
 284         case OUTPUT_TMDS:
 285                 NV_INFO(dev, "Detected a TMDS output\n");
 286                 type = DRM_MODE_ENCODER_TMDS;
 287                 break;
 288         case OUTPUT_LVDS:
 289                 NV_INFO(dev, "Detected a LVDS output\n");
 290                 type = DRM_MODE_ENCODER_LVDS;
 291
 292                 if (nouveau_bios_parse_lvds_table(dev, 0, &dum, &dum)) {
 293                         NV_ERROR(dev, "Failed parsing LVDS table\n");
 294                         return -EINVAL;
 295                 }
 296                 break;
 297         case OUTPUT_DP:
 298                 NV_INFO(dev, "Detected a DP output\n");
 299                 type = DRM_MODE_ENCODER_TMDS;
 300                 break;
 301         default:
 302                 return -EINVAL;
 303         }
 304
 305         nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
 306         if (!nv_encoder)
 307                 return -ENOMEM;
 308         encoder = to_drm_encoder(nv_encoder);
 309
 310         nv_encoder->dcb = entry;
 311         nv_encoder->or = ffs(entry->or) - 1;
 312
 313         nv_encoder->disconnect = nv50_sor_disconnect;
 314
 315         drm_encoder_init(dev, encoder, &nv50_sor_encoder_funcs, type);
 316         drm_encoder_helper_add(encoder, &nv50_sor_helper_funcs);
 317
 318         encoder->possible_crtcs = entry->heads;
 319         encoder->possible_clones = 0;
 320
 321         return 0;
 322 }