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