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/drm_atomic.h>
  33 #include <drm/drm_atomic_helper.h>
  34 #include <drm/drm_fourcc.h>
  35
  36 #include "i915_drv.h"
  37 #include "i915_reg.h"
  38 #include "intel_atomic.h"
  39 #include "intel_cdclk.h"
  40 #include "intel_display_types.h"
  41 #include "intel_global_state.h"
  42 #include "intel_hdcp.h"
  43 #include "intel_psr.h"
  44 #include "intel_fb.h"
  45 #include "skl_universal_plane.h"
  46
  47 /**
  48  * intel_digital_connector_atomic_get_property - hook for connector->atomic_get_property.
  49  * @connector: Connector to get the property for.
  50  * @state: Connector state to retrieve the property from.
  51  * @property: Property to retrieve.
  52  * @val: Return value for the property.
  53  *
  54  * Returns the atomic property value for a digital connector.
  55  */
  56 int intel_digital_connector_atomic_get_property(struct drm_connector *connector,
  57                                                 const struct drm_connector_state *state,
  58                                                 struct drm_property *property,
  59                                                 u64 *val)
  60 {
  61         struct drm_device *dev = connector->dev;
  62         struct drm_i915_private *dev_priv = to_i915(dev);
  63         struct intel_digital_connector_state *intel_conn_state =
  64                 to_intel_digital_connector_state(state);
  65
  66         if (property == dev_priv->display.properties.force_audio)
  67                 *val = intel_conn_state->force_audio;
  68         else if (property == dev_priv->display.properties.broadcast_rgb)
  69                 *val = intel_conn_state->broadcast_rgb;
  70         else {
  71                 drm_dbg_atomic(&dev_priv->drm,
  72                                "Unknown property [PROP:%d:%s]\n",
  73                                property->base.id, property->name);
  74                 return -EINVAL;
  75         }
  76
  77         return 0;
  78 }
  79
  80 /**
  81  * intel_digital_connector_atomic_set_property - hook for connector->atomic_set_property.
  82  * @connector: Connector to set the property for.
  83  * @state: Connector state to set the property on.
  84  * @property: Property to set.
  85  * @val: New value for the property.
  86  *
  87  * Sets the atomic property value for a digital connector.
  88  */
  89 int intel_digital_connector_atomic_set_property(struct drm_connector *connector,
  90                                                 struct drm_connector_state *state,
  91                                                 struct drm_property *property,
  92                                                 u64 val)
  93 {
  94         struct drm_device *dev = connector->dev;
  95         struct drm_i915_private *dev_priv = to_i915(dev);
  96         struct intel_digital_connector_state *intel_conn_state =
  97                 to_intel_digital_connector_state(state);
  98
  99         if (property == dev_priv->display.properties.force_audio) {
 100                 intel_conn_state->force_audio = val;
 101                 return 0;
 102         }
 103
 104         if (property == dev_priv->display.properties.broadcast_rgb) {
 105                 intel_conn_state->broadcast_rgb = val;
 106                 return 0;
 107         }
 108
 109         drm_dbg_atomic(&dev_priv->drm, "Unknown property [PROP:%d:%s]\n",
 110                        property->base.id, property->name);
 111         return -EINVAL;
 112 }
 113
 114 int intel_digital_connector_atomic_check(struct drm_connector *conn,
 115                                          struct drm_atomic_state *state)
 116 {
 117         struct drm_connector_state *new_state =
 118                 drm_atomic_get_new_connector_state(state, conn);
 119         struct intel_digital_connector_state *new_conn_state =
 120                 to_intel_digital_connector_state(new_state);
 121         struct drm_connector_state *old_state =
 122                 drm_atomic_get_old_connector_state(state, conn);
 123         struct intel_digital_connector_state *old_conn_state =
 124                 to_intel_digital_connector_state(old_state);
 125         struct drm_crtc_state *crtc_state;
 126
 127         intel_hdcp_atomic_check(conn, old_state, new_state);
 128
 129         if (!new_state->crtc)
 130                 return 0;
 131
 132         crtc_state = drm_atomic_get_new_crtc_state(state, new_state->crtc);
 133
 134         /*
 135          * These properties are handled by fastset, and might not end
 136          * up in a modeset.
 137          */
 138         if (new_conn_state->force_audio != old_conn_state->force_audio ||
 139             new_conn_state->broadcast_rgb != old_conn_state->broadcast_rgb ||
 140             new_conn_state->base.colorspace != old_conn_state->base.colorspace ||
 141             new_conn_state->base.picture_aspect_ratio != old_conn_state->base.picture_aspect_ratio ||
 142             new_conn_state->base.content_type != old_conn_state->base.content_type ||
 143             new_conn_state->base.scaling_mode != old_conn_state->base.scaling_mode ||
 144             new_conn_state->base.privacy_screen_sw_state != old_conn_state->base.privacy_screen_sw_state ||
 145             !drm_connector_atomic_hdr_metadata_equal(old_state, new_state))
 146                 crtc_state->mode_changed = true;
 147
 148         return 0;
 149 }
 150
 151 /**
 152  * intel_digital_connector_duplicate_state - duplicate connector state
 153  * @connector: digital connector
 154  *
 155  * Allocates and returns a copy of the connector state (both common and
 156  * digital connector specific) for the specified connector.
 157  *
 158  * Returns: The newly allocated connector state, or NULL on failure.
 159  */
 160 struct drm_connector_state *
 161 intel_digital_connector_duplicate_state(struct drm_connector *connector)
 162 {
 163         struct intel_digital_connector_state *state;
 164
 165         state = kmemdup(connector->state, sizeof(*state), GFP_KERNEL);
 166         if (!state)
 167                 return NULL;
 168
 169         __drm_atomic_helper_connector_duplicate_state(connector, &state->base);
 170         return &state->base;
 171 }
 172
 173 /**
 174  * intel_connector_needs_modeset - check if connector needs a modeset
 175  * @state: the atomic state corresponding to this modeset
 176  * @connector: the connector
 177  */
 178 bool
 179 intel_connector_needs_modeset(struct intel_atomic_state *state,
 180                               struct drm_connector *connector)
 181 {
 182         const struct drm_connector_state *old_conn_state, *new_conn_state;
 183
 184         old_conn_state = drm_atomic_get_old_connector_state(&state->base, connector);
 185         new_conn_state = drm_atomic_get_new_connector_state(&state->base, connector);
 186
 187         return old_conn_state->crtc != new_conn_state->crtc ||
 188                (new_conn_state->crtc &&
 189                 drm_atomic_crtc_needs_modeset(drm_atomic_get_new_crtc_state(&state->base,
 190                                                                             new_conn_state->crtc)));
 191 }
 192
 193 /**
 194  * intel_any_crtc_needs_modeset - check if any CRTC needs a modeset
 195  * @state: the atomic state corresponding to this modeset
 196  *
 197  * Returns true if any CRTC in @state needs a modeset.
 198  */
 199 bool intel_any_crtc_needs_modeset(struct intel_atomic_state *state)
 200 {
 201         struct intel_crtc *crtc;
 202         struct intel_crtc_state *crtc_state;
 203         int i;
 204
 205         for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
 206                 if (intel_crtc_needs_modeset(crtc_state))
 207                         return true;
 208         }
 209
 210         return false;
 211 }
 212
 213 struct intel_digital_connector_state *
 214 intel_atomic_get_digital_connector_state(struct intel_atomic_state *state,
 215                                          struct intel_connector *connector)
 216 {
 217         struct drm_connector_state *conn_state;
 218
 219         conn_state = drm_atomic_get_connector_state(&state->base,
 220                                                     &connector->base);
 221         if (IS_ERR(conn_state))
 222                 return ERR_CAST(conn_state);
 223
 224         return to_intel_digital_connector_state(conn_state);
 225 }
 226
 227 /**
 228  * intel_crtc_duplicate_state - duplicate crtc state
 229  * @crtc: drm crtc
 230  *
 231  * Allocates and returns a copy of the crtc state (both common and
 232  * Intel-specific) for the specified crtc.
 233  *
 234  * Returns: The newly allocated crtc state, or NULL on failure.
 235  */
 236 struct drm_crtc_state *
 237 intel_crtc_duplicate_state(struct drm_crtc *crtc)
 238 {
 239         const struct intel_crtc_state *old_crtc_state = to_intel_crtc_state(crtc->state);
 240         struct intel_crtc_state *crtc_state;
 241
 242         crtc_state = kmemdup(old_crtc_state, sizeof(*crtc_state), GFP_KERNEL);
 243         if (!crtc_state)
 244                 return NULL;
 245
 246         __drm_atomic_helper_crtc_duplicate_state(crtc, &crtc_state->uapi);
 247
 248         /* copy color blobs */
 249         if (crtc_state->hw.degamma_lut)
 250                 drm_property_blob_get(crtc_state->hw.degamma_lut);
 251         if (crtc_state->hw.ctm)
 252                 drm_property_blob_get(crtc_state->hw.ctm);
 253         if (crtc_state->hw.gamma_lut)
 254                 drm_property_blob_get(crtc_state->hw.gamma_lut);
 255
 256         if (crtc_state->pre_csc_lut)
 257                 drm_property_blob_get(crtc_state->pre_csc_lut);
 258         if (crtc_state->post_csc_lut)
 259                 drm_property_blob_get(crtc_state->post_csc_lut);
 260
 261         crtc_state->update_pipe = false;
 262         crtc_state->update_m_n = false;
 263         crtc_state->update_lrr = false;
 264         crtc_state->disable_lp_wm = false;
 265         crtc_state->disable_cxsr = false;
 266         crtc_state->update_wm_pre = false;
 267         crtc_state->update_wm_post = false;
 268         crtc_state->fifo_changed = false;
 269         crtc_state->preload_luts = false;
 270         crtc_state->wm.need_postvbl_update = false;
 271         crtc_state->do_async_flip = false;
 272         crtc_state->fb_bits = 0;
 273         crtc_state->update_planes = 0;
 274         crtc_state->dsb = NULL;
 275
 276         return &crtc_state->uapi;
 277 }
 278
 279 static void intel_crtc_put_color_blobs(struct intel_crtc_state *crtc_state)
 280 {
 281         drm_property_blob_put(crtc_state->hw.degamma_lut);
 282         drm_property_blob_put(crtc_state->hw.gamma_lut);
 283         drm_property_blob_put(crtc_state->hw.ctm);
 284
 285         drm_property_blob_put(crtc_state->pre_csc_lut);
 286         drm_property_blob_put(crtc_state->post_csc_lut);
 287 }
 288
 289 void intel_crtc_free_hw_state(struct intel_crtc_state *crtc_state)
 290 {
 291         intel_crtc_put_color_blobs(crtc_state);
 292 }
 293
 294 /**
 295  * intel_crtc_destroy_state - destroy crtc state
 296  * @crtc: drm crtc
 297  * @state: the state to destroy
 298  *
 299  * Destroys the crtc state (both common and Intel-specific) for the
 300  * specified crtc.
 301  */
 302 void
 303 intel_crtc_destroy_state(struct drm_crtc *crtc,
 304                          struct drm_crtc_state *state)
 305 {
 306         struct intel_crtc_state *crtc_state = to_intel_crtc_state(state);
 307
 308         drm_WARN_ON(crtc->dev, crtc_state->dsb);
 309
 310         __drm_atomic_helper_crtc_destroy_state(&crtc_state->uapi);
 311         intel_crtc_free_hw_state(crtc_state);
 312         kfree(crtc_state);
 313 }
 314
 315 struct drm_atomic_state *
 316 intel_atomic_state_alloc(struct drm_device *dev)
 317 {
 318         struct intel_atomic_state *state = kzalloc(sizeof(*state), GFP_KERNEL);
 319
 320         if (!state || drm_atomic_state_init(dev, &state->base) < 0) {
 321                 kfree(state);
 322                 return NULL;
 323         }
 324
 325         return &state->base;
 326 }
 327
 328 void intel_atomic_state_free(struct drm_atomic_state *_state)
 329 {
 330         struct intel_atomic_state *state = to_intel_atomic_state(_state);
 331
 332         drm_atomic_state_default_release(&state->base);
 333         kfree(state->global_objs);
 334
 335         i915_sw_fence_fini(&state->commit_ready);
 336
 337         kfree(state);
 338 }
 339
 340 void intel_atomic_state_clear(struct drm_atomic_state *s)
 341 {
 342         struct intel_atomic_state *state = to_intel_atomic_state(s);
 343
 344         drm_atomic_state_default_clear(&state->base);
 345         intel_atomic_clear_global_state(state);
 346
 347         /* state->internal not reset on purpose */
 348
 349         state->dpll_set = state->modeset = false;
 350 }
 351
 352 struct intel_crtc_state *
 353 intel_atomic_get_crtc_state(struct drm_atomic_state *state,
 354                             struct intel_crtc *crtc)
 355 {
 356         struct drm_crtc_state *crtc_state;
 357         crtc_state = drm_atomic_get_crtc_state(state, &crtc->base);
 358         if (IS_ERR(crtc_state))
 359                 return ERR_CAST(crtc_state);
 360
 361         return to_intel_crtc_state(crtc_state);
 362 }