drivers/gpu/drm/i915/display/intel_atomic.c

   1 /*
   2  * Copyright © 2015 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 /**
  25  * DOC: atomic modeset support
  26  *
  27  * The functions here implement the state management and hardware programming
  28  * dispatch required by the atomic modeset infrastructure.
  29  * See intel_atomic_plane.c for the plane-specific atomic functionality.
  30  */
  31
  32 #include <drm/display/drm_dp_tunnel.h>
  33 #include <drm/drm_atomic.h>
  34 #include <drm/drm_atomic_helper.h>
  35 #include <drm/drm_fourcc.h>
  36
  37 #include "i915_drv.h"
  38 #include "intel_atomic.h"
  39 #include "intel_cdclk.h"
  40 #include "intel_display_types.h"
  41 #include "intel_dp_tunnel.h"
  42 #include "intel_global_state.h"
  43 #include "intel_hdcp.h"
  44 #include "intel_psr.h"
  45 #include "intel_fb.h"
  46 #include "skl_universal_plane.h"
  47
  48 /**
  49  * intel_digital_connector_atomic_get_property - hook for connector->atomic_get_property.
  50  * @connector: Connector to get the property for.
  51  * @state: Connector state to retrieve the property from.
  52  * @property: Property to retrieve.
  53  * @val: Return value for the property.
  54  *
  55  * Returns the atomic property value for a digital connector.
  56  */
  57 int intel_digital_connector_atomic_get_property(struct drm_connector *connector,
  58                                                 const struct drm_connector_state *state,
  59                                                 struct drm_property *property,
  60                                                 u64 *val)
  61 {
  62         struct drm_device *dev = connector->dev;
  63         struct drm_i915_private *dev_priv = to_i915(dev);
  64         const struct intel_digital_connector_state *intel_conn_state =
  65                 to_intel_digital_connector_state(state);
  66
  67         if (property == dev_priv->display.properties.force_audio)
  68                 *val = intel_conn_state->force_audio;
  69         else if (property == dev_priv->display.properties.broadcast_rgb)
  70                 *val = intel_conn_state->broadcast_rgb;
  71         else {
  72                 drm_dbg_atomic(&dev_priv->drm,
  73                                "Unknown property [PROP:%d:%s]\n",
  74                                property->base.id, property->name);
  75                 return -EINVAL;
  76         }
  77
  78         return 0;
  79 }
  80
  81 /**
  82  * intel_digital_connector_atomic_set_property - hook for connector->atomic_set_property.
  83  * @connector: Connector to set the property for.
  84  * @state: Connector state to set the property on.
  85  * @property: Property to set.
  86  * @val: New value for the property.
  87  *
  88  * Sets the atomic property value for a digital connector.
  89  */
  90 int intel_digital_connector_atomic_set_property(struct drm_connector *connector,
  91                                                 struct drm_connector_state *state,
  92                                                 struct drm_property *property,
  93                                                 u64 val)
  94 {
  95         struct drm_device *dev = connector->dev;
  96         struct drm_i915_private *dev_priv = to_i915(dev);
  97         struct intel_digital_connector_state *intel_conn_state =
  98                 to_intel_digital_connector_state(state);
  99
 100         if (property == dev_priv->display.properties.force_audio) {
 101                 intel_conn_state->force_audio = val;
 102                 return 0;
 103         }
 104
 105         if (property == dev_priv->display.properties.broadcast_rgb) {
 106                 intel_conn_state->broadcast_rgb = val;
 107                 return 0;
 108         }
 109
 110         drm_dbg_atomic(&dev_priv->drm, "Unknown property [PROP:%d:%s]\n",
 111                        property->base.id, property->name);
 112         return -EINVAL;
 113 }
 114
 115 int intel_digital_connector_atomic_check(struct drm_connector *conn,
 116                                          struct drm_atomic_state *state)
 117 {
 118         struct drm_connector_state *new_state =
 119                 drm_atomic_get_new_connector_state(state, conn);
 120         struct intel_digital_connector_state *new_conn_state =
 121                 to_intel_digital_connector_state(new_state);
 122         struct drm_connector_state *old_state =
 123                 drm_atomic_get_old_connector_state(state, conn);
 124         struct intel_digital_connector_state *old_conn_state =
 125                 to_intel_digital_connector_state(old_state);
 126         struct drm_crtc_state *crtc_state;
 127
 128         intel_hdcp_atomic_check(conn, old_state, new_state);
 129
 130         if (!new_state->crtc)
 131                 return 0;
 132
 133         crtc_state = drm_atomic_get_new_crtc_state(state, new_state->crtc);
 134
 135         /*
 136          * These properties are handled by fastset, and might not end
 137          * up in a modeset.
 138          */
 139         if (new_conn_state->force_audio != old_conn_state->force_audio ||
 140             new_conn_state->broadcast_rgb != old_conn_state->broadcast_rgb ||
 141             new_conn_state->base.colorspace != old_conn_state->base.colorspace ||
 142             new_conn_state->base.picture_aspect_ratio != old_conn_state->base.picture_aspect_ratio ||
 143             new_conn_state->base.content_type != old_conn_state->base.content_type ||
 144             new_conn_state->base.scaling_mode != old_conn_state->base.scaling_mode ||
 145             new_conn_state->base.privacy_screen_sw_state != old_conn_state->base.privacy_screen_sw_state ||
 146             !drm_connector_atomic_hdr_metadata_equal(old_state, new_state))
 147                 crtc_state->mode_changed = true;
 148
 149         return 0;
 150 }
 151
 152 /**
 153  * intel_digital_connector_duplicate_state - duplicate connector state
 154  * @connector: digital connector
 155  *
 156  * Allocates and returns a copy of the connector state (both common and
 157  * digital connector specific) for the specified connector.
 158  *
 159  * Returns: The newly allocated connector state, or NULL on failure.
 160  */
 161 struct drm_connector_state *
 162 intel_digital_connector_duplicate_state(struct drm_connector *connector)
 163 {
 164         struct intel_digital_connector_state *state;
 165
 166         state = kmemdup(connector->state, sizeof(*state), GFP_KERNEL);
 167         if (!state)
 168                 return NULL;
 169
 170         __drm_atomic_helper_connector_duplicate_state(connector, &state->base);
 171         return &state->base;
 172 }
 173
 174 /**
 175  * intel_connector_needs_modeset - check if connector needs a modeset
 176  * @state: the atomic state corresponding to this modeset
 177  * @connector: the connector
 178  */
 179 bool
 180 intel_connector_needs_modeset(struct intel_atomic_state *state,
 181                               struct drm_connector *connector)
 182 {
 183         const struct drm_connector_state *old_conn_state, *new_conn_state;
 184
 185         old_conn_state = drm_atomic_get_old_connector_state(&state->base, connector);
 186         new_conn_state = drm_atomic_get_new_connector_state(&state->base, connector);
 187
 188         return old_conn_state->crtc != new_conn_state->crtc ||
 189                (new_conn_state->crtc &&
 190                 drm_atomic_crtc_needs_modeset(drm_atomic_get_new_crtc_state(&state->base,
 191                                                                             new_conn_state->crtc)));
 192 }
 193
 194 /**
 195  * intel_any_crtc_needs_modeset - check if any CRTC needs a modeset
 196  * @state: the atomic state corresponding to this modeset
 197  *
 198  * Returns true if any CRTC in @state needs a modeset.
 199  */
 200 bool intel_any_crtc_needs_modeset(struct intel_atomic_state *state)
 201 {
 202         struct intel_crtc *crtc;
 203         struct intel_crtc_state *crtc_state;
 204         int i;
 205
 206         for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
 207                 if (intel_crtc_needs_modeset(crtc_state))
 208                         return true;
 209         }
 210
 211         return false;
 212 }
 213
 214 struct intel_digital_connector_state *
 215 intel_atomic_get_digital_connector_state(struct intel_atomic_state *state,
 216                                          struct intel_connector *connector)
 217 {
 218         struct drm_connector_state *conn_state;
 219
 220         conn_state = drm_atomic_get_connector_state(&state->base,
 221                                                     &connector->base);
 222         if (IS_ERR(conn_state))
 223                 return ERR_CAST(conn_state);
 224
 225         return to_intel_digital_connector_state(conn_state);
 226 }
 227
 228 /**
 229  * intel_crtc_duplicate_state - duplicate crtc state
 230  * @crtc: drm crtc
 231  *
 232  * Allocates and returns a copy of the crtc state (both common and
 233  * Intel-specific) for the specified crtc.
 234  *
 235  * Returns: The newly allocated crtc state, or NULL on failure.
 236  */
 237 struct drm_crtc_state *
 238 intel_crtc_duplicate_state(struct drm_crtc *crtc)
 239 {
 240         const struct intel_crtc_state *old_crtc_state = to_intel_crtc_state(crtc->state);
 241         struct intel_crtc_state *crtc_state;
 242
 243         crtc_state = kmemdup(old_crtc_state, sizeof(*crtc_state), GFP_KERNEL);
 244         if (!crtc_state)
 245                 return NULL;
 246
 247         __drm_atomic_helper_crtc_duplicate_state(crtc, &crtc_state->uapi);
 248
 249         /* copy color blobs */
 250         if (crtc_state->hw.degamma_lut)
 251                 drm_property_blob_get(crtc_state->hw.degamma_lut);
 252         if (crtc_state->hw.ctm)
 253                 drm_property_blob_get(crtc_state->hw.ctm);
 254         if (crtc_state->hw.gamma_lut)
 255                 drm_property_blob_get(crtc_state->hw.gamma_lut);
 256
 257         if (crtc_state->pre_csc_lut)
 258                 drm_property_blob_get(crtc_state->pre_csc_lut);
 259         if (crtc_state->post_csc_lut)
 260                 drm_property_blob_get(crtc_state->post_csc_lut);
 261
 262         if (crtc_state->dp_tunnel_ref.tunnel)
 263                 drm_dp_tunnel_ref_get(crtc_state->dp_tunnel_ref.tunnel,
 264                                       &crtc_state->dp_tunnel_ref);
 265
 266         crtc_state->update_pipe = false;
 267         crtc_state->update_m_n = false;
 268         crtc_state->update_lrr = false;
 269         crtc_state->disable_cxsr = false;
 270         crtc_state->update_wm_pre = false;
 271         crtc_state->update_wm_post = false;
 272         crtc_state->fifo_changed = false;
 273         crtc_state->preload_luts = false;
 274         crtc_state->wm.need_postvbl_update = false;
 275         crtc_state->do_async_flip = false;
 276         crtc_state->fb_bits = 0;
 277         crtc_state->update_planes = 0;
 278         crtc_state->dsb_color_vblank = NULL;
 279         crtc_state->dsb_commit = NULL;
 280         crtc_state->use_dsb = false;
 281
 282         return &crtc_state->uapi;
 283 }
 284
 285 static void intel_crtc_put_color_blobs(struct intel_crtc_state *crtc_state)
 286 {
 287         drm_property_blob_put(crtc_state->hw.degamma_lut);
 288         drm_property_blob_put(crtc_state->hw.gamma_lut);
 289         drm_property_blob_put(crtc_state->hw.ctm);
 290
 291         drm_property_blob_put(crtc_state->pre_csc_lut);
 292         drm_property_blob_put(crtc_state->post_csc_lut);
 293 }
 294
 295 void intel_crtc_free_hw_state(struct intel_crtc_state *crtc_state)
 296 {
 297         intel_crtc_put_color_blobs(crtc_state);
 298 }
 299
 300 /**
 301  * intel_crtc_destroy_state - destroy crtc state
 302  * @crtc: drm crtc
 303  * @state: the state to destroy
 304  *
 305  * Destroys the crtc state (both common and Intel-specific) for the
 306  * specified crtc.
 307  */
 308 void
 309 intel_crtc_destroy_state(struct drm_crtc *crtc,
 310                          struct drm_crtc_state *state)
 311 {
 312         struct intel_crtc_state *crtc_state = to_intel_crtc_state(state);
 313
 314         drm_WARN_ON(crtc->dev, crtc_state->dsb_color_vblank);
 315         drm_WARN_ON(crtc->dev, crtc_state->dsb_commit);
 316
 317         __drm_atomic_helper_crtc_destroy_state(&crtc_state->uapi);
 318         intel_crtc_free_hw_state(crtc_state);
 319         if (crtc_state->dp_tunnel_ref.tunnel)
 320                 drm_dp_tunnel_ref_put(&crtc_state->dp_tunnel_ref);
 321         kfree(crtc_state);
 322 }
 323
 324 struct drm_atomic_state *
 325 intel_atomic_state_alloc(struct drm_device *dev)
 326 {
 327         struct intel_atomic_state *state = kzalloc(sizeof(*state), GFP_KERNEL);
 328
 329         if (!state || drm_atomic_state_init(dev, &state->base) < 0) {
 330                 kfree(state);
 331                 return NULL;
 332         }
 333
 334         return &state->base;
 335 }
 336
 337 void intel_atomic_state_free(struct drm_atomic_state *_state)
 338 {
 339         struct intel_atomic_state *state = to_intel_atomic_state(_state);
 340
 341         drm_atomic_state_default_release(&state->base);
 342         kfree(state->global_objs);
 343         kfree(state);
 344 }
 345
 346 void intel_atomic_state_clear(struct drm_atomic_state *s)
 347 {
 348         struct intel_atomic_state *state = to_intel_atomic_state(s);
 349
 350         drm_atomic_state_default_clear(&state->base);
 351         intel_atomic_clear_global_state(state);
 352
 353         /* state->internal not reset on purpose */
 354
 355         state->dpll_set = state->modeset = false;
 356
 357         intel_dp_tunnel_atomic_cleanup_inherited_state(state);
 358 }
 359
 360 struct intel_crtc_state *
 361 intel_atomic_get_crtc_state(struct drm_atomic_state *state,
 362                             struct intel_crtc *crtc)
 363 {
 364         struct drm_crtc_state *crtc_state;
 365         crtc_state = drm_atomic_get_crtc_state(state, &crtc->base);
 366         if (IS_ERR(crtc_state))
 367                 return ERR_CAST(crtc_state);
 368
 369         return to_intel_crtc_state(crtc_state);
 370 }