drivers/gpu/drm/nouveau/nv50_dac.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_dac_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
  51         NV_DEBUG_KMS(dev, "Disconnecting DAC %d\n", nv_encoder->or);
  52
  53         ret = RING_SPACE(evo, 2);
  54         if (ret) {
  55                 NV_ERROR(dev, "no space while disconnecting DAC\n");
  56                 return;
  57         }
  58         BEGIN_RING(evo, 0, NV50_EVO_DAC(nv_encoder->or, MODE_CTRL), 1);
  59         OUT_RING(evo, 0);
  60
  61         nv_encoder->crtc = NULL;
  62 }
  63
  64 static enum drm_connector_status
  65 nv50_dac_detect(struct drm_encoder *encoder, struct drm_connector *connector)
  66 {
  67         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
  68         struct drm_device *dev = encoder->dev;
  69         struct drm_nouveau_private *dev_priv = dev->dev_private;
  70         enum drm_connector_status status = connector_status_disconnected;
  71         uint32_t dpms_state, load_pattern, load_state;
  72         int or = nv_encoder->or;
  73
  74         nv_wr32(dev, NV50_PDISPLAY_DAC_CLK_CTRL1(or), 0x00000001);
  75         dpms_state = nv_rd32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or));
  76
  77         nv_wr32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or),
  78                 0x00150000 | NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING);
  79         if (!nv_wait(NV50_PDISPLAY_DAC_DPMS_CTRL(or),
  80                      NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING, 0)) {
  81                 NV_ERROR(dev, "timeout: DAC_DPMS_CTRL_PENDING(%d) == 0\n", or);
  82                 NV_ERROR(dev, "DAC_DPMS_CTRL(%d) = 0x%08x\n", or,
  83                           nv_rd32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or)));
  84                 return status;
  85         }
  86
  87         /* Use bios provided value if possible. */
  88         if (dev_priv->vbios.dactestval) {
  89                 load_pattern = dev_priv->vbios.dactestval;
  90                 NV_DEBUG_KMS(dev, "Using bios provided load_pattern of %d\n",
  91                           load_pattern);
  92         } else {
  93                 load_pattern = 340;
  94                 NV_DEBUG_KMS(dev, "Using default load_pattern of %d\n",
  95                          load_pattern);
  96         }
  97
  98         nv_wr32(dev, NV50_PDISPLAY_DAC_LOAD_CTRL(or),
  99                 NV50_PDISPLAY_DAC_LOAD_CTRL_ACTIVE | load_pattern);
 100         mdelay(45); /* give it some time to process */
 101         load_state = nv_rd32(dev, NV50_PDISPLAY_DAC_LOAD_CTRL(or));
 102
 103         nv_wr32(dev, NV50_PDISPLAY_DAC_LOAD_CTRL(or), 0);
 104         nv_wr32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or), dpms_state |
 105                 NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING);
 106
 107         if ((load_state & NV50_PDISPLAY_DAC_LOAD_CTRL_PRESENT) ==
 108                           NV50_PDISPLAY_DAC_LOAD_CTRL_PRESENT)
 109                 status = connector_status_connected;
 110
 111         if (status == connector_status_connected)
 112                 NV_DEBUG_KMS(dev, "Load was detected on output with or %d\n", or);
 113         else
 114                 NV_DEBUG_KMS(dev, "Load was not detected on output with or %d\n", or);
 115
 116         return status;
 117 }
 118
 119 static void
 120 nv50_dac_dpms(struct drm_encoder *encoder, int mode)
 121 {
 122         struct drm_device *dev = encoder->dev;
 123         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 124         uint32_t val;
 125         int or = nv_encoder->or;
 126
 127         NV_DEBUG_KMS(dev, "or %d mode %d\n", or, mode);
 128
 129         /* wait for it to be done */
 130         if (!nv_wait(NV50_PDISPLAY_DAC_DPMS_CTRL(or),
 131                      NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING, 0)) {
 132                 NV_ERROR(dev, "timeout: DAC_DPMS_CTRL_PENDING(%d) == 0\n", or);
 133                 NV_ERROR(dev, "DAC_DPMS_CTRL(%d) = 0x%08x\n", or,
 134                          nv_rd32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or)));
 135                 return;
 136         }
 137
 138         val = nv_rd32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or)) & ~0x7F;
 139
 140         if (mode != DRM_MODE_DPMS_ON)
 141                 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_BLANKED;
 142
 143         switch (mode) {
 144         case DRM_MODE_DPMS_STANDBY:
 145                 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_HSYNC_OFF;
 146                 break;
 147         case DRM_MODE_DPMS_SUSPEND:
 148                 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_VSYNC_OFF;
 149                 break;
 150         case DRM_MODE_DPMS_OFF:
 151                 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_OFF;
 152                 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_HSYNC_OFF;
 153                 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_VSYNC_OFF;
 154                 break;
 155         default:
 156                 break;
 157         }
 158
 159         nv_wr32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or), val |
 160                 NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING);
 161 }
 162
 163 static void
 164 nv50_dac_save(struct drm_encoder *encoder)
 165 {
 166         NV_ERROR(encoder->dev, "!!\n");
 167 }
 168
 169 static void
 170 nv50_dac_restore(struct drm_encoder *encoder)
 171 {
 172         NV_ERROR(encoder->dev, "!!\n");
 173 }
 174
 175 static bool
 176 nv50_dac_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode,
 177                     struct drm_display_mode *adjusted_mode)
 178 {
 179         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 180         struct nouveau_connector *connector;
 181
 182         NV_DEBUG_KMS(encoder->dev, "or %d\n", nv_encoder->or);
 183
 184         connector = nouveau_encoder_connector_get(nv_encoder);
 185         if (!connector) {
 186                 NV_ERROR(encoder->dev, "Encoder has no connector\n");
 187                 return false;
 188         }
 189
 190         if (connector->scaling_mode != DRM_MODE_SCALE_NONE &&
 191              connector->native_mode) {
 192                 int id = adjusted_mode->base.id;
 193                 *adjusted_mode = *connector->native_mode;
 194                 adjusted_mode->base.id = id;
 195         }
 196
 197         return true;
 198 }
 199
 200 static void
 201 nv50_dac_prepare(struct drm_encoder *encoder)
 202 {
 203 }
 204
 205 static void
 206 nv50_dac_commit(struct drm_encoder *encoder)
 207 {
 208 }
 209
 210 static void
 211 nv50_dac_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
 212                   struct drm_display_mode *adjusted_mode)
 213 {
 214         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 215         struct drm_device *dev = encoder->dev;
 216         struct drm_nouveau_private *dev_priv = dev->dev_private;
 217         struct nouveau_channel *evo = dev_priv->evo;
 218         struct nouveau_crtc *crtc = nouveau_crtc(encoder->crtc);
 219         uint32_t mode_ctl = 0, mode_ctl2 = 0;
 220         int ret;
 221
 222         NV_DEBUG_KMS(dev, "or %d type %d crtc %d\n",
 223                      nv_encoder->or, nv_encoder->dcb->type, crtc->index);
 224
 225         nv50_dac_dpms(encoder, DRM_MODE_DPMS_ON);
 226
 227         if (crtc->index == 1)
 228                 mode_ctl |= NV50_EVO_DAC_MODE_CTRL_CRTC1;
 229         else
 230                 mode_ctl |= NV50_EVO_DAC_MODE_CTRL_CRTC0;
 231
 232         /* Lacking a working tv-out, this is not a 100% sure. */
 233         if (nv_encoder->dcb->type == OUTPUT_ANALOG)
 234                 mode_ctl |= 0x40;
 235         else
 236         if (nv_encoder->dcb->type == OUTPUT_TV)
 237                 mode_ctl |= 0x100;
 238
 239         if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
 240                 mode_ctl2 |= NV50_EVO_DAC_MODE_CTRL2_NHSYNC;
 241
 242         if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
 243                 mode_ctl2 |= NV50_EVO_DAC_MODE_CTRL2_NVSYNC;
 244
 245         ret = RING_SPACE(evo, 3);
 246         if (ret) {
 247                 NV_ERROR(dev, "no space while connecting DAC\n");
 248                 return;
 249         }
 250         BEGIN_RING(evo, 0, NV50_EVO_DAC(nv_encoder->or, MODE_CTRL), 2);
 251         OUT_RING(evo, mode_ctl);
 252         OUT_RING(evo, mode_ctl2);
 253
 254         nv_encoder->crtc = encoder->crtc;
 255 }
 256
 257 static const struct drm_encoder_helper_funcs nv50_dac_helper_funcs = {
 258         .dpms = nv50_dac_dpms,
 259         .save = nv50_dac_save,
 260         .restore = nv50_dac_restore,
 261         .mode_fixup = nv50_dac_mode_fixup,
 262         .prepare = nv50_dac_prepare,
 263         .commit = nv50_dac_commit,
 264         .mode_set = nv50_dac_mode_set,
 265         .detect = nv50_dac_detect,
 266         .disable = nv50_dac_disconnect
 267 };
 268
 269 static void
 270 nv50_dac_destroy(struct drm_encoder *encoder)
 271 {
 272         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 273
 274         if (!encoder)
 275                 return;
 276
 277         NV_DEBUG_KMS(encoder->dev, "\n");
 278
 279         drm_encoder_cleanup(encoder);
 280         kfree(nv_encoder);
 281 }
 282
 283 static const struct drm_encoder_funcs nv50_dac_encoder_funcs = {
 284         .destroy = nv50_dac_destroy,
 285 };
 286
 287 int
 288 nv50_dac_create(struct drm_connector *connector, struct dcb_entry *entry)
 289 {
 290         struct nouveau_encoder *nv_encoder;
 291         struct drm_encoder *encoder;
 292
 293         nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
 294         if (!nv_encoder)
 295                 return -ENOMEM;
 296         encoder = to_drm_encoder(nv_encoder);
 297
 298         nv_encoder->dcb = entry;
 299         nv_encoder->or = ffs(entry->or) - 1;
 300
 301         drm_encoder_init(connector->dev, encoder, &nv50_dac_encoder_funcs,
 302                          DRM_MODE_ENCODER_DAC);
 303         drm_encoder_helper_add(encoder, &nv50_dac_helper_funcs);
 304
 305         encoder->possible_crtcs = entry->heads;
 306         encoder->possible_clones = 0;
 307
 308         drm_mode_connector_attach_encoder(connector, encoder);
 309         return 0;
 310 }
 311