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 nouveau_channel *evo = nv50_display(dev)->master;
  45         int ret;
  46
  47         if (!nv_encoder->crtc)
  48                 return;
  49         nv50_crtc_blank(nouveau_crtc(nv_encoder->crtc), true);
  50
  51         NV_DEBUG_KMS(dev, "Disconnecting DAC %d\n", nv_encoder->or);
  52
  53         ret = RING_SPACE(evo, 4);
  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         BEGIN_RING(evo, 0, NV50_EVO_UPDATE, 1);
  61         OUT_RING  (evo, 0);
  62
  63         nv_encoder->crtc = NULL;
  64 }
  65
  66 static enum drm_connector_status
  67 nv50_dac_detect(struct drm_encoder *encoder, struct drm_connector *connector)
  68 {
  69         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
  70         struct drm_device *dev = encoder->dev;
  71         struct drm_nouveau_private *dev_priv = dev->dev_private;
  72         enum drm_connector_status status = connector_status_disconnected;
  73         uint32_t dpms_state, load_pattern, load_state;
  74         int or = nv_encoder->or;
  75
  76         nv_wr32(dev, NV50_PDISPLAY_DAC_CLK_CTRL1(or), 0x00000001);
  77         dpms_state = nv_rd32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or));
  78
  79         nv_wr32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or),
  80                 0x00150000 | NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING);
  81         if (!nv_wait(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or),
  82                      NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING, 0)) {
  83                 NV_ERROR(dev, "timeout: DAC_DPMS_CTRL_PENDING(%d) == 0\n", or);
  84                 NV_ERROR(dev, "DAC_DPMS_CTRL(%d) = 0x%08x\n", or,
  85                           nv_rd32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or)));
  86                 return status;
  87         }
  88
  89         /* Use bios provided value if possible. */
  90         if (dev_priv->vbios.dactestval) {
  91                 load_pattern = dev_priv->vbios.dactestval;
  92                 NV_DEBUG_KMS(dev, "Using bios provided load_pattern of %d\n",
  93                           load_pattern);
  94         } else {
  95                 load_pattern = 340;
  96                 NV_DEBUG_KMS(dev, "Using default load_pattern of %d\n",
  97                          load_pattern);
  98         }
  99
 100         nv_wr32(dev, NV50_PDISPLAY_DAC_LOAD_CTRL(or),
 101                 NV50_PDISPLAY_DAC_LOAD_CTRL_ACTIVE | load_pattern);
 102         mdelay(45); /* give it some time to process */
 103         load_state = nv_rd32(dev, NV50_PDISPLAY_DAC_LOAD_CTRL(or));
 104
 105         nv_wr32(dev, NV50_PDISPLAY_DAC_LOAD_CTRL(or), 0);
 106         nv_wr32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or), dpms_state |
 107                 NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING);
 108
 109         if ((load_state & NV50_PDISPLAY_DAC_LOAD_CTRL_PRESENT) ==
 110                           NV50_PDISPLAY_DAC_LOAD_CTRL_PRESENT)
 111                 status = connector_status_connected;
 112
 113         if (status == connector_status_connected)
 114                 NV_DEBUG_KMS(dev, "Load was detected on output with or %d\n", or);
 115         else
 116                 NV_DEBUG_KMS(dev, "Load was not detected on output with or %d\n", or);
 117
 118         return status;
 119 }
 120
 121 static void
 122 nv50_dac_dpms(struct drm_encoder *encoder, int mode)
 123 {
 124         struct drm_device *dev = encoder->dev;
 125         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 126         uint32_t val;
 127         int or = nv_encoder->or;
 128
 129         NV_DEBUG_KMS(dev, "or %d mode %d\n", or, mode);
 130
 131         /* wait for it to be done */
 132         if (!nv_wait(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or),
 133                      NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING, 0)) {
 134                 NV_ERROR(dev, "timeout: DAC_DPMS_CTRL_PENDING(%d) == 0\n", or);
 135                 NV_ERROR(dev, "DAC_DPMS_CTRL(%d) = 0x%08x\n", or,
 136                          nv_rd32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or)));
 137                 return;
 138         }
 139
 140         val = nv_rd32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or)) & ~0x7F;
 141
 142         if (mode != DRM_MODE_DPMS_ON)
 143                 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_BLANKED;
 144
 145         switch (mode) {
 146         case DRM_MODE_DPMS_STANDBY:
 147                 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_HSYNC_OFF;
 148                 break;
 149         case DRM_MODE_DPMS_SUSPEND:
 150                 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_VSYNC_OFF;
 151                 break;
 152         case DRM_MODE_DPMS_OFF:
 153                 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_OFF;
 154                 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_HSYNC_OFF;
 155                 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_VSYNC_OFF;
 156                 break;
 157         default:
 158                 break;
 159         }
 160
 161         nv_wr32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or), val |
 162                 NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING);
 163 }
 164
 165 static void
 166 nv50_dac_save(struct drm_encoder *encoder)
 167 {
 168         NV_ERROR(encoder->dev, "!!\n");
 169 }
 170
 171 static void
 172 nv50_dac_restore(struct drm_encoder *encoder)
 173 {
 174         NV_ERROR(encoder->dev, "!!\n");
 175 }
 176
 177 static bool
 178 nv50_dac_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode,
 179                     struct drm_display_mode *adjusted_mode)
 180 {
 181         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 182         struct nouveau_connector *connector;
 183
 184         NV_DEBUG_KMS(encoder->dev, "or %d\n", nv_encoder->or);
 185
 186         connector = nouveau_encoder_connector_get(nv_encoder);
 187         if (!connector) {
 188                 NV_ERROR(encoder->dev, "Encoder has no connector\n");
 189                 return false;
 190         }
 191
 192         if (connector->scaling_mode != DRM_MODE_SCALE_NONE &&
 193              connector->native_mode) {
 194                 int id = adjusted_mode->base.id;
 195                 *adjusted_mode = *connector->native_mode;
 196                 adjusted_mode->base.id = id;
 197         }
 198
 199         return true;
 200 }
 201
 202 static void
 203 nv50_dac_prepare(struct drm_encoder *encoder)
 204 {
 205 }
 206
 207 static void
 208 nv50_dac_commit(struct drm_encoder *encoder)
 209 {
 210 }
 211
 212 static void
 213 nv50_dac_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
 214                   struct drm_display_mode *adjusted_mode)
 215 {
 216         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 217         struct drm_device *dev = encoder->dev;
 218         struct nouveau_channel *evo = nv50_display(dev)->master;
 219         struct nouveau_crtc *crtc = nouveau_crtc(encoder->crtc);
 220         uint32_t mode_ctl = 0, mode_ctl2 = 0;
 221         int ret;
 222
 223         NV_DEBUG_KMS(dev, "or %d type %d crtc %d\n",
 224                      nv_encoder->or, nv_encoder->dcb->type, crtc->index);
 225
 226         nv50_dac_dpms(encoder, DRM_MODE_DPMS_ON);
 227
 228         if (crtc->index == 1)
 229                 mode_ctl |= NV50_EVO_DAC_MODE_CTRL_CRTC1;
 230         else
 231                 mode_ctl |= NV50_EVO_DAC_MODE_CTRL_CRTC0;
 232
 233         /* Lacking a working tv-out, this is not a 100% sure. */
 234         if (nv_encoder->dcb->type == OUTPUT_ANALOG)
 235                 mode_ctl |= 0x40;
 236         else
 237         if (nv_encoder->dcb->type == OUTPUT_TV)
 238                 mode_ctl |= 0x100;
 239
 240         if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
 241                 mode_ctl2 |= NV50_EVO_DAC_MODE_CTRL2_NHSYNC;
 242
 243         if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
 244                 mode_ctl2 |= NV50_EVO_DAC_MODE_CTRL2_NVSYNC;
 245
 246         ret = RING_SPACE(evo, 3);
 247         if (ret) {
 248                 NV_ERROR(dev, "no space while connecting DAC\n");
 249                 return;
 250         }
 251         BEGIN_RING(evo, 0, NV50_EVO_DAC(nv_encoder->or, MODE_CTRL), 2);
 252         OUT_RING(evo, mode_ctl);
 253         OUT_RING(evo, mode_ctl2);
 254
 255         nv_encoder->crtc = encoder->crtc;
 256 }
 257
 258 static struct drm_crtc *
 259 nv50_dac_crtc_get(struct drm_encoder *encoder)
 260 {
 261         return nouveau_encoder(encoder)->crtc;
 262 }
 263
 264 static const struct drm_encoder_helper_funcs nv50_dac_helper_funcs = {
 265         .dpms = nv50_dac_dpms,
 266         .save = nv50_dac_save,
 267         .restore = nv50_dac_restore,
 268         .mode_fixup = nv50_dac_mode_fixup,
 269         .prepare = nv50_dac_prepare,
 270         .commit = nv50_dac_commit,
 271         .mode_set = nv50_dac_mode_set,
 272         .get_crtc = nv50_dac_crtc_get,
 273         .detect = nv50_dac_detect,
 274         .disable = nv50_dac_disconnect
 275 };
 276
 277 static void
 278 nv50_dac_destroy(struct drm_encoder *encoder)
 279 {
 280         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 281
 282         if (!encoder)
 283                 return;
 284
 285         NV_DEBUG_KMS(encoder->dev, "\n");
 286
 287         drm_encoder_cleanup(encoder);
 288         kfree(nv_encoder);
 289 }
 290
 291 static const struct drm_encoder_funcs nv50_dac_encoder_funcs = {
 292         .destroy = nv50_dac_destroy,
 293 };
 294
 295 int
 296 nv50_dac_create(struct drm_connector *connector, struct dcb_entry *entry)
 297 {
 298         struct nouveau_encoder *nv_encoder;
 299         struct drm_encoder *encoder;
 300
 301         nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
 302         if (!nv_encoder)
 303                 return -ENOMEM;
 304         encoder = to_drm_encoder(nv_encoder);
 305
 306         nv_encoder->dcb = entry;
 307         nv_encoder->or = ffs(entry->or) - 1;
 308
 309         drm_encoder_init(connector->dev, encoder, &nv50_dac_encoder_funcs,
 310                          DRM_MODE_ENCODER_DAC);
 311         drm_encoder_helper_add(encoder, &nv50_dac_helper_funcs);
 312
 313         encoder->possible_crtcs = entry->heads;
 314         encoder->possible_clones = 0;
 315
 316         drm_mode_connector_attach_encoder(connector, encoder);
 317         return 0;
 318 }
 319