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25 * DOC: atomic modeset support
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.
32 #include <drm/drm_atomic.h>
33 #include <drm/drm_atomic_helper.h>
34 #include <drm/drm_fourcc.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 "skl_universal_plane.h"
47 * intel_digital_connector_atomic_get_property - hook for connector->atomic_get_property.
48 * @connector: Connector to get the property for.
49 * @state: Connector state to retrieve the property from.
50 * @property: Property to retrieve.
51 * @val: Return value for the property.
53 * Returns the atomic property value for a digital connector.
55 int intel_digital_connector_atomic_get_property(struct drm_connector *connector,
56 const struct drm_connector_state *state,
57 struct drm_property *property,
60 struct drm_device *dev = connector->dev;
61 struct drm_i915_private *dev_priv = to_i915(dev);
62 struct intel_digital_connector_state *intel_conn_state =
63 to_intel_digital_connector_state(state);
65 if (property == dev_priv->display.properties.force_audio)
66 *val = intel_conn_state->force_audio;
67 else if (property == dev_priv->display.properties.broadcast_rgb)
68 *val = intel_conn_state->broadcast_rgb;
70 drm_dbg_atomic(&dev_priv->drm,
71 "Unknown property [PROP:%d:%s]\n",
72 property->base.id, property->name);
80 * intel_digital_connector_atomic_set_property - hook for connector->atomic_set_property.
81 * @connector: Connector to set the property for.
82 * @state: Connector state to set the property on.
83 * @property: Property to set.
84 * @val: New value for the property.
86 * Sets the atomic property value for a digital connector.
88 int intel_digital_connector_atomic_set_property(struct drm_connector *connector,
89 struct drm_connector_state *state,
90 struct drm_property *property,
93 struct drm_device *dev = connector->dev;
94 struct drm_i915_private *dev_priv = to_i915(dev);
95 struct intel_digital_connector_state *intel_conn_state =
96 to_intel_digital_connector_state(state);
98 if (property == dev_priv->display.properties.force_audio) {
99 intel_conn_state->force_audio = val;
103 if (property == dev_priv->display.properties.broadcast_rgb) {
104 intel_conn_state->broadcast_rgb = val;
108 drm_dbg_atomic(&dev_priv->drm, "Unknown property [PROP:%d:%s]\n",
109 property->base.id, property->name);
113 int intel_digital_connector_atomic_check(struct drm_connector *conn,
114 struct drm_atomic_state *state)
116 struct drm_connector_state *new_state =
117 drm_atomic_get_new_connector_state(state, conn);
118 struct intel_digital_connector_state *new_conn_state =
119 to_intel_digital_connector_state(new_state);
120 struct drm_connector_state *old_state =
121 drm_atomic_get_old_connector_state(state, conn);
122 struct intel_digital_connector_state *old_conn_state =
123 to_intel_digital_connector_state(old_state);
124 struct drm_crtc_state *crtc_state;
126 intel_hdcp_atomic_check(conn, old_state, new_state);
128 if (!new_state->crtc)
131 crtc_state = drm_atomic_get_new_crtc_state(state, new_state->crtc);
134 * These properties are handled by fastset, and might not end
137 if (new_conn_state->force_audio != old_conn_state->force_audio ||
138 new_conn_state->broadcast_rgb != old_conn_state->broadcast_rgb ||
139 new_conn_state->base.colorspace != old_conn_state->base.colorspace ||
140 new_conn_state->base.picture_aspect_ratio != old_conn_state->base.picture_aspect_ratio ||
141 new_conn_state->base.content_type != old_conn_state->base.content_type ||
142 new_conn_state->base.scaling_mode != old_conn_state->base.scaling_mode ||
143 new_conn_state->base.privacy_screen_sw_state != old_conn_state->base.privacy_screen_sw_state ||
144 !drm_connector_atomic_hdr_metadata_equal(old_state, new_state))
145 crtc_state->mode_changed = true;
151 * intel_digital_connector_duplicate_state - duplicate connector state
152 * @connector: digital connector
154 * Allocates and returns a copy of the connector state (both common and
155 * digital connector specific) for the specified connector.
157 * Returns: The newly allocated connector state, or NULL on failure.
159 struct drm_connector_state *
160 intel_digital_connector_duplicate_state(struct drm_connector *connector)
162 struct intel_digital_connector_state *state;
164 state = kmemdup(connector->state, sizeof(*state), GFP_KERNEL);
168 __drm_atomic_helper_connector_duplicate_state(connector, &state->base);
173 * intel_connector_needs_modeset - check if connector needs a modeset
174 * @state: the atomic state corresponding to this modeset
175 * @connector: the connector
178 intel_connector_needs_modeset(struct intel_atomic_state *state,
179 struct drm_connector *connector)
181 const struct drm_connector_state *old_conn_state, *new_conn_state;
183 old_conn_state = drm_atomic_get_old_connector_state(&state->base, connector);
184 new_conn_state = drm_atomic_get_new_connector_state(&state->base, connector);
186 return old_conn_state->crtc != new_conn_state->crtc ||
187 (new_conn_state->crtc &&
188 drm_atomic_crtc_needs_modeset(drm_atomic_get_new_crtc_state(&state->base,
189 new_conn_state->crtc)));
193 * intel_any_crtc_needs_modeset - check if any CRTC needs a modeset
194 * @state: the atomic state corresponding to this modeset
196 * Returns true if any CRTC in @state needs a modeset.
198 bool intel_any_crtc_needs_modeset(struct intel_atomic_state *state)
200 struct intel_crtc *crtc;
201 struct intel_crtc_state *crtc_state;
204 for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
205 if (intel_crtc_needs_modeset(crtc_state))
212 struct intel_digital_connector_state *
213 intel_atomic_get_digital_connector_state(struct intel_atomic_state *state,
214 struct intel_connector *connector)
216 struct drm_connector_state *conn_state;
218 conn_state = drm_atomic_get_connector_state(&state->base,
220 if (IS_ERR(conn_state))
221 return ERR_CAST(conn_state);
223 return to_intel_digital_connector_state(conn_state);
227 * intel_crtc_duplicate_state - duplicate crtc state
230 * Allocates and returns a copy of the crtc state (both common and
231 * Intel-specific) for the specified crtc.
233 * Returns: The newly allocated crtc state, or NULL on failure.
235 struct drm_crtc_state *
236 intel_crtc_duplicate_state(struct drm_crtc *crtc)
238 const struct intel_crtc_state *old_crtc_state = to_intel_crtc_state(crtc->state);
239 struct intel_crtc_state *crtc_state;
241 crtc_state = kmemdup(old_crtc_state, sizeof(*crtc_state), GFP_KERNEL);
245 __drm_atomic_helper_crtc_duplicate_state(crtc, &crtc_state->uapi);
247 /* copy color blobs */
248 if (crtc_state->hw.degamma_lut)
249 drm_property_blob_get(crtc_state->hw.degamma_lut);
250 if (crtc_state->hw.ctm)
251 drm_property_blob_get(crtc_state->hw.ctm);
252 if (crtc_state->hw.gamma_lut)
253 drm_property_blob_get(crtc_state->hw.gamma_lut);
255 crtc_state->update_pipe = false;
256 crtc_state->disable_lp_wm = false;
257 crtc_state->disable_cxsr = false;
258 crtc_state->update_wm_pre = false;
259 crtc_state->update_wm_post = false;
260 crtc_state->fifo_changed = false;
261 crtc_state->preload_luts = false;
262 crtc_state->inherited = false;
263 crtc_state->wm.need_postvbl_update = false;
264 crtc_state->do_async_flip = false;
265 crtc_state->fb_bits = 0;
266 crtc_state->update_planes = 0;
267 crtc_state->dsb = NULL;
269 return &crtc_state->uapi;
272 static void intel_crtc_put_color_blobs(struct intel_crtc_state *crtc_state)
274 drm_property_blob_put(crtc_state->hw.degamma_lut);
275 drm_property_blob_put(crtc_state->hw.gamma_lut);
276 drm_property_blob_put(crtc_state->hw.ctm);
279 void intel_crtc_free_hw_state(struct intel_crtc_state *crtc_state)
281 intel_crtc_put_color_blobs(crtc_state);
285 * intel_crtc_destroy_state - destroy crtc state
287 * @state: the state to destroy
289 * Destroys the crtc state (both common and Intel-specific) for the
293 intel_crtc_destroy_state(struct drm_crtc *crtc,
294 struct drm_crtc_state *state)
296 struct intel_crtc_state *crtc_state = to_intel_crtc_state(state);
298 drm_WARN_ON(crtc->dev, crtc_state->dsb);
300 __drm_atomic_helper_crtc_destroy_state(&crtc_state->uapi);
301 intel_crtc_free_hw_state(crtc_state);
305 static void intel_atomic_setup_scaler(struct intel_crtc_scaler_state *scaler_state,
306 int num_scalers_need, struct intel_crtc *intel_crtc,
307 const char *name, int idx,
308 struct intel_plane_state *plane_state,
311 struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
315 if (*scaler_id < 0) {
316 /* find a free scaler */
317 for (j = 0; j < intel_crtc->num_scalers; j++) {
318 if (scaler_state->scalers[j].in_use)
322 scaler_state->scalers[*scaler_id].in_use = 1;
327 if (drm_WARN(&dev_priv->drm, *scaler_id < 0,
328 "Cannot find scaler for %s:%d\n", name, idx))
331 /* set scaler mode */
332 if (plane_state && plane_state->hw.fb &&
333 plane_state->hw.fb->format->is_yuv &&
334 plane_state->hw.fb->format->num_planes > 1) {
335 struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
336 if (DISPLAY_VER(dev_priv) == 9) {
337 mode = SKL_PS_SCALER_MODE_NV12;
338 } else if (icl_is_hdr_plane(dev_priv, plane->id)) {
340 * On gen11+'s HDR planes we only use the scaler for
341 * scaling. They have a dedicated chroma upsampler, so
342 * we don't need the scaler to upsample the UV plane.
344 mode = PS_SCALER_MODE_NORMAL;
346 struct intel_plane *linked =
347 plane_state->planar_linked_plane;
349 mode = PS_SCALER_MODE_PLANAR;
352 mode |= PS_PLANE_Y_SEL(linked->id);
354 } else if (DISPLAY_VER(dev_priv) >= 10) {
355 mode = PS_SCALER_MODE_NORMAL;
356 } else if (num_scalers_need == 1 && intel_crtc->num_scalers > 1) {
358 * when only 1 scaler is in use on a pipe with 2 scalers
359 * scaler 0 operates in high quality (HQ) mode.
360 * In this case use scaler 0 to take advantage of HQ mode
362 scaler_state->scalers[*scaler_id].in_use = 0;
364 scaler_state->scalers[0].in_use = 1;
365 mode = SKL_PS_SCALER_MODE_HQ;
367 mode = SKL_PS_SCALER_MODE_DYN;
370 drm_dbg_kms(&dev_priv->drm, "Attached scaler id %u.%u to %s:%d\n",
371 intel_crtc->pipe, *scaler_id, name, idx);
372 scaler_state->scalers[*scaler_id].mode = mode;
376 * intel_atomic_setup_scalers() - setup scalers for crtc per staged requests
377 * @dev_priv: i915 device
378 * @intel_crtc: intel crtc
379 * @crtc_state: incoming crtc_state to validate and setup scalers
381 * This function sets up scalers based on staged scaling requests for
382 * a @crtc and its planes. It is called from crtc level check path. If request
383 * is a supportable request, it attaches scalers to requested planes and crtc.
385 * This function takes into account the current scaler(s) in use by any planes
386 * not being part of this atomic state
389 * 0 - scalers were setup succesfully
390 * error code - otherwise
392 int intel_atomic_setup_scalers(struct drm_i915_private *dev_priv,
393 struct intel_crtc *intel_crtc,
394 struct intel_crtc_state *crtc_state)
396 struct drm_plane *plane = NULL;
397 struct intel_plane *intel_plane;
398 struct intel_plane_state *plane_state = NULL;
399 struct intel_crtc_scaler_state *scaler_state =
400 &crtc_state->scaler_state;
401 struct drm_atomic_state *drm_state = crtc_state->uapi.state;
402 struct intel_atomic_state *intel_state = to_intel_atomic_state(drm_state);
403 int num_scalers_need;
406 num_scalers_need = hweight32(scaler_state->scaler_users);
410 * - staged scaler requests are already in scaler_state->scaler_users
411 * - check whether staged scaling requests can be supported
412 * - add planes using scalers that aren't in current transaction
413 * - assign scalers to requested users
414 * - as part of plane commit, scalers will be committed
415 * (i.e., either attached or detached) to respective planes in hw
416 * - as part of crtc_commit, scaler will be either attached or detached
420 /* fail if required scalers > available scalers */
421 if (num_scalers_need > intel_crtc->num_scalers){
422 drm_dbg_kms(&dev_priv->drm,
423 "Too many scaling requests %d > %d\n",
424 num_scalers_need, intel_crtc->num_scalers);
428 /* walkthrough scaler_users bits and start assigning scalers */
429 for (i = 0; i < sizeof(scaler_state->scaler_users) * 8; i++) {
434 /* skip if scaler not required */
435 if (!(scaler_state->scaler_users & (1 << i)))
438 if (i == SKL_CRTC_INDEX) {
440 idx = intel_crtc->base.base.id;
442 /* panel fitter case: assign as a crtc scaler */
443 scaler_id = &scaler_state->scaler_id;
447 /* plane scaler case: assign as a plane scaler */
448 /* find the plane that set the bit as scaler_user */
449 plane = drm_state->planes[i].ptr;
452 * to enable/disable hq mode, add planes that are using scaler
453 * into this transaction
456 struct drm_plane_state *state;
459 * GLK+ scalers don't have a HQ mode so it
460 * isn't necessary to change between HQ and dyn mode
461 * on those platforms.
463 if (DISPLAY_VER(dev_priv) >= 10)
466 plane = drm_plane_from_index(&dev_priv->drm, i);
467 state = drm_atomic_get_plane_state(drm_state, plane);
469 drm_dbg_kms(&dev_priv->drm,
470 "Failed to add [PLANE:%d] to drm_state\n",
472 return PTR_ERR(state);
476 intel_plane = to_intel_plane(plane);
477 idx = plane->base.id;
479 /* plane on different crtc cannot be a scaler user of this crtc */
480 if (drm_WARN_ON(&dev_priv->drm,
481 intel_plane->pipe != intel_crtc->pipe))
484 plane_state = intel_atomic_get_new_plane_state(intel_state,
486 scaler_id = &plane_state->scaler_id;
489 intel_atomic_setup_scaler(scaler_state, num_scalers_need,
490 intel_crtc, name, idx,
491 plane_state, scaler_id);
497 struct drm_atomic_state *
498 intel_atomic_state_alloc(struct drm_device *dev)
500 struct intel_atomic_state *state = kzalloc(sizeof(*state), GFP_KERNEL);
502 if (!state || drm_atomic_state_init(dev, &state->base) < 0) {
510 void intel_atomic_state_free(struct drm_atomic_state *_state)
512 struct intel_atomic_state *state = to_intel_atomic_state(_state);
514 drm_atomic_state_default_release(&state->base);
515 kfree(state->global_objs);
517 i915_sw_fence_fini(&state->commit_ready);
522 void intel_atomic_state_clear(struct drm_atomic_state *s)
524 struct intel_atomic_state *state = to_intel_atomic_state(s);
526 drm_atomic_state_default_clear(&state->base);
527 intel_atomic_clear_global_state(state);
529 state->dpll_set = state->modeset = false;
532 struct intel_crtc_state *
533 intel_atomic_get_crtc_state(struct drm_atomic_state *state,
534 struct intel_crtc *crtc)
536 struct drm_crtc_state *crtc_state;
537 crtc_state = drm_atomic_get_crtc_state(state, &crtc->base);
538 if (IS_ERR(crtc_state))
539 return ERR_CAST(crtc_state);
541 return to_intel_crtc_state(crtc_state);