1 // SPDX-License-Identifier: MIT
3 * Copyright 2022 Advanced Micro Devices, Inc.
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6 * copy of this software and associated documentation files (the "Software"),
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10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
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
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20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
26 #include <drm/drm_vblank.h>
27 #include <drm/drm_atomic_helper.h>
31 #include "amdgpu_dm_psr.h"
32 #include "amdgpu_dm_replay.h"
33 #include "amdgpu_dm_crtc.h"
34 #include "amdgpu_dm_plane.h"
35 #include "amdgpu_dm_trace.h"
36 #include "amdgpu_dm_debugfs.h"
38 void amdgpu_dm_crtc_handle_vblank(struct amdgpu_crtc *acrtc)
40 struct drm_crtc *crtc = &acrtc->base;
41 struct drm_device *dev = crtc->dev;
44 drm_crtc_handle_vblank(crtc);
46 spin_lock_irqsave(&dev->event_lock, flags);
48 /* Send completion event for cursor-only commits */
49 if (acrtc->event && acrtc->pflip_status != AMDGPU_FLIP_SUBMITTED) {
50 drm_crtc_send_vblank_event(crtc, acrtc->event);
51 drm_crtc_vblank_put(crtc);
55 spin_unlock_irqrestore(&dev->event_lock, flags);
58 bool amdgpu_dm_crtc_modeset_required(struct drm_crtc_state *crtc_state,
59 struct dc_stream_state *new_stream,
60 struct dc_stream_state *old_stream)
62 return crtc_state->active && drm_atomic_crtc_needs_modeset(crtc_state);
65 bool amdgpu_dm_crtc_vrr_active_irq(struct amdgpu_crtc *acrtc)
68 return acrtc->dm_irq_params.freesync_config.state ==
69 VRR_STATE_ACTIVE_VARIABLE ||
70 acrtc->dm_irq_params.freesync_config.state ==
71 VRR_STATE_ACTIVE_FIXED;
74 int amdgpu_dm_crtc_set_vupdate_irq(struct drm_crtc *crtc, bool enable)
76 enum dc_irq_source irq_source;
77 struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
78 struct amdgpu_device *adev = drm_to_adev(crtc->dev);
81 if (acrtc->otg_inst == -1)
84 irq_source = IRQ_TYPE_VUPDATE + acrtc->otg_inst;
86 rc = dc_interrupt_set(adev->dm.dc, irq_source, enable) ? 0 : -EBUSY;
88 DRM_DEBUG_VBL("crtc %d - vupdate irq %sabling: r=%d\n",
89 acrtc->crtc_id, enable ? "en" : "dis", rc);
93 bool amdgpu_dm_crtc_vrr_active(struct dm_crtc_state *dm_state)
95 return dm_state->freesync_config.state == VRR_STATE_ACTIVE_VARIABLE ||
96 dm_state->freesync_config.state == VRR_STATE_ACTIVE_FIXED;
99 static void amdgpu_dm_crtc_vblank_control_worker(struct work_struct *work)
101 struct vblank_control_work *vblank_work =
102 container_of(work, struct vblank_control_work, work);
103 struct amdgpu_display_manager *dm = vblank_work->dm;
105 mutex_lock(&dm->dc_lock);
107 if (vblank_work->enable)
108 dm->active_vblank_irq_count++;
109 else if (dm->active_vblank_irq_count)
110 dm->active_vblank_irq_count--;
112 dc_allow_idle_optimizations(dm->dc, dm->active_vblank_irq_count == 0);
114 DRM_DEBUG_KMS("Allow idle optimizations (MALL): %d\n", dm->active_vblank_irq_count == 0);
117 * Control PSR based on vblank requirements from OS
119 * If panel supports PSR SU, there's no need to disable PSR when OS is
120 * submitting fast atomic commits (we infer this by whether the OS
121 * requests vblank events). Fast atomic commits will simply trigger a
122 * full-frame-update (FFU); a specific case of selective-update (SU)
123 * where the SU region is the full hactive*vactive region. See
124 * fill_dc_dirty_rects().
126 if (vblank_work->stream && vblank_work->stream->link) {
128 * Prioritize replay, instead of psr
130 if (vblank_work->stream->link->replay_settings.replay_feature_enabled)
131 amdgpu_dm_replay_enable(vblank_work->stream, false);
132 else if (vblank_work->enable) {
133 if (vblank_work->stream->link->psr_settings.psr_version < DC_PSR_VERSION_SU_1 &&
134 vblank_work->stream->link->psr_settings.psr_allow_active)
135 amdgpu_dm_psr_disable(vblank_work->stream);
136 } else if (vblank_work->stream->link->psr_settings.psr_feature_enabled &&
137 !vblank_work->stream->link->psr_settings.psr_allow_active &&
138 #ifdef CONFIG_DRM_AMD_SECURE_DISPLAY
139 !amdgpu_dm_crc_window_is_activated(&vblank_work->acrtc->base) &&
141 vblank_work->stream->link->panel_config.psr.disallow_replay &&
142 vblank_work->acrtc->dm_irq_params.allow_psr_entry) {
143 amdgpu_dm_psr_enable(vblank_work->stream);
147 mutex_unlock(&dm->dc_lock);
149 dc_stream_release(vblank_work->stream);
154 static inline int amdgpu_dm_crtc_set_vblank(struct drm_crtc *crtc, bool enable)
156 struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
157 struct amdgpu_device *adev = drm_to_adev(crtc->dev);
158 struct dm_crtc_state *acrtc_state = to_dm_crtc_state(crtc->state);
159 struct amdgpu_display_manager *dm = &adev->dm;
160 struct vblank_control_work *work;
163 if (acrtc->otg_inst == -1)
167 /* vblank irq on -> Only need vupdate irq in vrr mode */
168 if (amdgpu_dm_crtc_vrr_active(acrtc_state))
169 rc = amdgpu_dm_crtc_set_vupdate_irq(crtc, true);
171 /* vblank irq off -> vupdate irq off */
172 rc = amdgpu_dm_crtc_set_vupdate_irq(crtc, false);
179 ? amdgpu_irq_get(adev, &adev->crtc_irq, acrtc->crtc_id)
180 : amdgpu_irq_put(adev, &adev->crtc_irq, acrtc->crtc_id);
186 if (amdgpu_in_reset(adev))
189 if (dm->vblank_control_workqueue) {
190 work = kzalloc(sizeof(*work), GFP_ATOMIC);
194 INIT_WORK(&work->work, amdgpu_dm_crtc_vblank_control_worker);
197 work->enable = enable;
199 if (acrtc_state->stream) {
200 dc_stream_retain(acrtc_state->stream);
201 work->stream = acrtc_state->stream;
204 queue_work(dm->vblank_control_workqueue, &work->work);
210 int amdgpu_dm_crtc_enable_vblank(struct drm_crtc *crtc)
212 return amdgpu_dm_crtc_set_vblank(crtc, true);
215 void amdgpu_dm_crtc_disable_vblank(struct drm_crtc *crtc)
217 amdgpu_dm_crtc_set_vblank(crtc, false);
220 static void amdgpu_dm_crtc_destroy_state(struct drm_crtc *crtc,
221 struct drm_crtc_state *state)
223 struct dm_crtc_state *cur = to_dm_crtc_state(state);
225 /* TODO Destroy dc_stream objects are stream object is flattened */
227 dc_stream_release(cur->stream);
230 __drm_atomic_helper_crtc_destroy_state(state);
236 static struct drm_crtc_state *amdgpu_dm_crtc_duplicate_state(struct drm_crtc *crtc)
238 struct dm_crtc_state *state, *cur;
240 cur = to_dm_crtc_state(crtc->state);
242 if (WARN_ON(!crtc->state))
245 state = kzalloc(sizeof(*state), GFP_KERNEL);
249 __drm_atomic_helper_crtc_duplicate_state(crtc, &state->base);
252 state->stream = cur->stream;
253 dc_stream_retain(state->stream);
256 state->active_planes = cur->active_planes;
257 state->vrr_infopacket = cur->vrr_infopacket;
258 state->abm_level = cur->abm_level;
259 state->vrr_supported = cur->vrr_supported;
260 state->freesync_config = cur->freesync_config;
261 state->cm_has_degamma = cur->cm_has_degamma;
262 state->cm_is_degamma_srgb = cur->cm_is_degamma_srgb;
263 state->regamma_tf = cur->regamma_tf;
264 state->crc_skip_count = cur->crc_skip_count;
265 state->mpo_requested = cur->mpo_requested;
266 /* TODO Duplicate dc_stream after objects are stream object is flattened */
271 static void amdgpu_dm_crtc_destroy(struct drm_crtc *crtc)
273 drm_crtc_cleanup(crtc);
277 static void amdgpu_dm_crtc_reset_state(struct drm_crtc *crtc)
279 struct dm_crtc_state *state;
282 amdgpu_dm_crtc_destroy_state(crtc, crtc->state);
284 state = kzalloc(sizeof(*state), GFP_KERNEL);
288 __drm_atomic_helper_crtc_reset(crtc, &state->base);
291 #ifdef CONFIG_DEBUG_FS
292 static int amdgpu_dm_crtc_late_register(struct drm_crtc *crtc)
294 crtc_debugfs_init(crtc);
300 #ifdef AMD_PRIVATE_COLOR
302 * drm_crtc_additional_color_mgmt - enable additional color properties
305 * This function lets the driver enable post-blending CRTC regamma transfer
306 * function property in addition to DRM CRTC gamma LUT. Default value means
307 * linear transfer function, which is the default CRTC gamma LUT behaviour
308 * without this property.
311 dm_crtc_additional_color_mgmt(struct drm_crtc *crtc)
313 struct amdgpu_device *adev = drm_to_adev(crtc->dev);
315 if(adev->dm.dc->caps.color.mpc.ogam_ram)
316 drm_object_attach_property(&crtc->base,
317 adev->mode_info.regamma_tf_property,
318 AMDGPU_TRANSFER_FUNCTION_DEFAULT);
322 amdgpu_dm_atomic_crtc_set_property(struct drm_crtc *crtc,
323 struct drm_crtc_state *state,
324 struct drm_property *property,
327 struct amdgpu_device *adev = drm_to_adev(crtc->dev);
328 struct dm_crtc_state *acrtc_state = to_dm_crtc_state(state);
330 if (property == adev->mode_info.regamma_tf_property) {
331 if (acrtc_state->regamma_tf != val) {
332 acrtc_state->regamma_tf = val;
333 acrtc_state->base.color_mgmt_changed |= 1;
336 drm_dbg_atomic(crtc->dev,
337 "[CRTC:%d:%s] unknown property [PROP:%d:%s]]\n",
338 crtc->base.id, crtc->name,
339 property->base.id, property->name);
347 amdgpu_dm_atomic_crtc_get_property(struct drm_crtc *crtc,
348 const struct drm_crtc_state *state,
349 struct drm_property *property,
352 struct amdgpu_device *adev = drm_to_adev(crtc->dev);
353 struct dm_crtc_state *acrtc_state = to_dm_crtc_state(state);
355 if (property == adev->mode_info.regamma_tf_property)
356 *val = acrtc_state->regamma_tf;
364 /* Implemented only the options currently available for the driver */
365 static const struct drm_crtc_funcs amdgpu_dm_crtc_funcs = {
366 .reset = amdgpu_dm_crtc_reset_state,
367 .destroy = amdgpu_dm_crtc_destroy,
368 .set_config = drm_atomic_helper_set_config,
369 .page_flip = drm_atomic_helper_page_flip,
370 .atomic_duplicate_state = amdgpu_dm_crtc_duplicate_state,
371 .atomic_destroy_state = amdgpu_dm_crtc_destroy_state,
372 .set_crc_source = amdgpu_dm_crtc_set_crc_source,
373 .verify_crc_source = amdgpu_dm_crtc_verify_crc_source,
374 .get_crc_sources = amdgpu_dm_crtc_get_crc_sources,
375 .get_vblank_counter = amdgpu_get_vblank_counter_kms,
376 .enable_vblank = amdgpu_dm_crtc_enable_vblank,
377 .disable_vblank = amdgpu_dm_crtc_disable_vblank,
378 .get_vblank_timestamp = drm_crtc_vblank_helper_get_vblank_timestamp,
379 #if defined(CONFIG_DEBUG_FS)
380 .late_register = amdgpu_dm_crtc_late_register,
382 #ifdef AMD_PRIVATE_COLOR
383 .atomic_set_property = amdgpu_dm_atomic_crtc_set_property,
384 .atomic_get_property = amdgpu_dm_atomic_crtc_get_property,
388 static void amdgpu_dm_crtc_helper_disable(struct drm_crtc *crtc)
392 static int amdgpu_dm_crtc_count_crtc_active_planes(struct drm_crtc_state *new_crtc_state)
394 struct drm_atomic_state *state = new_crtc_state->state;
395 struct drm_plane *plane;
398 drm_for_each_plane_mask(plane, state->dev, new_crtc_state->plane_mask) {
399 struct drm_plane_state *new_plane_state;
401 /* Cursor planes are "fake". */
402 if (plane->type == DRM_PLANE_TYPE_CURSOR)
405 new_plane_state = drm_atomic_get_new_plane_state(state, plane);
407 if (!new_plane_state) {
409 * The plane is enable on the CRTC and hasn't changed
410 * state. This means that it previously passed
411 * validation and is therefore enabled.
417 /* We need a framebuffer to be considered enabled. */
418 num_active += (new_plane_state->fb != NULL);
424 static void amdgpu_dm_crtc_update_crtc_active_planes(struct drm_crtc *crtc,
425 struct drm_crtc_state *new_crtc_state)
427 struct dm_crtc_state *dm_new_crtc_state =
428 to_dm_crtc_state(new_crtc_state);
430 dm_new_crtc_state->active_planes = 0;
432 if (!dm_new_crtc_state->stream)
435 dm_new_crtc_state->active_planes =
436 amdgpu_dm_crtc_count_crtc_active_planes(new_crtc_state);
439 static bool amdgpu_dm_crtc_helper_mode_fixup(struct drm_crtc *crtc,
440 const struct drm_display_mode *mode,
441 struct drm_display_mode *adjusted_mode)
446 static int amdgpu_dm_crtc_helper_atomic_check(struct drm_crtc *crtc,
447 struct drm_atomic_state *state)
449 struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state,
451 struct amdgpu_device *adev = drm_to_adev(crtc->dev);
452 struct dc *dc = adev->dm.dc;
453 struct dm_crtc_state *dm_crtc_state = to_dm_crtc_state(crtc_state);
456 trace_amdgpu_dm_crtc_atomic_check(crtc_state);
458 amdgpu_dm_crtc_update_crtc_active_planes(crtc, crtc_state);
460 if (WARN_ON(unlikely(!dm_crtc_state->stream &&
461 amdgpu_dm_crtc_modeset_required(crtc_state, NULL, dm_crtc_state->stream)))) {
466 * We require the primary plane to be enabled whenever the CRTC is, otherwise
467 * drm_mode_cursor_universal may end up trying to enable the cursor plane while all other
468 * planes are disabled, which is not supported by the hardware. And there is legacy
469 * userspace which stops using the HW cursor altogether in response to the resulting EINVAL.
471 if (crtc_state->enable &&
472 !(crtc_state->plane_mask & drm_plane_mask(crtc->primary))) {
473 DRM_DEBUG_ATOMIC("Can't enable a CRTC without enabling the primary plane\n");
478 * Only allow async flips for fast updates that don't change the FB
479 * pitch, the DCC state, rotation, etc.
481 if (crtc_state->async_flip &&
482 dm_crtc_state->update_type != UPDATE_TYPE_FAST) {
483 drm_dbg_atomic(crtc->dev,
484 "[CRTC:%d:%s] async flips are only supported for fast updates\n",
485 crtc->base.id, crtc->name);
489 /* In some use cases, like reset, no stream is attached */
490 if (!dm_crtc_state->stream)
493 if (dc_validate_stream(dc, dm_crtc_state->stream) == DC_OK)
496 DRM_DEBUG_ATOMIC("Failed DC stream validation\n");
500 static const struct drm_crtc_helper_funcs amdgpu_dm_crtc_helper_funcs = {
501 .disable = amdgpu_dm_crtc_helper_disable,
502 .atomic_check = amdgpu_dm_crtc_helper_atomic_check,
503 .mode_fixup = amdgpu_dm_crtc_helper_mode_fixup,
504 .get_scanout_position = amdgpu_crtc_get_scanout_position,
507 int amdgpu_dm_crtc_init(struct amdgpu_display_manager *dm,
508 struct drm_plane *plane,
511 struct amdgpu_crtc *acrtc = NULL;
512 struct drm_plane *cursor_plane;
516 cursor_plane = kzalloc(sizeof(*cursor_plane), GFP_KERNEL);
520 cursor_plane->type = DRM_PLANE_TYPE_CURSOR;
521 res = amdgpu_dm_plane_init(dm, cursor_plane, 0, NULL);
523 acrtc = kzalloc(sizeof(struct amdgpu_crtc), GFP_KERNEL);
527 res = drm_crtc_init_with_planes(
532 &amdgpu_dm_crtc_funcs, NULL);
537 drm_crtc_helper_add(&acrtc->base, &amdgpu_dm_crtc_helper_funcs);
539 /* Create (reset) the plane state */
540 if (acrtc->base.funcs->reset)
541 acrtc->base.funcs->reset(&acrtc->base);
543 acrtc->max_cursor_width = dm->adev->dm.dc->caps.max_cursor_size;
544 acrtc->max_cursor_height = dm->adev->dm.dc->caps.max_cursor_size;
546 acrtc->crtc_id = crtc_index;
547 acrtc->base.enabled = false;
548 acrtc->otg_inst = -1;
550 dm->adev->mode_info.crtcs[crtc_index] = acrtc;
552 /* Don't enable DRM CRTC degamma property for DCE since it doesn't
553 * support programmable degamma anywhere.
555 is_dcn = dm->adev->dm.dc->caps.color.dpp.dcn_arch;
556 drm_crtc_enable_color_mgmt(&acrtc->base, is_dcn ? MAX_COLOR_LUT_ENTRIES : 0,
557 true, MAX_COLOR_LUT_ENTRIES);
559 drm_mode_crtc_set_gamma_size(&acrtc->base, MAX_COLOR_LEGACY_LUT_ENTRIES);
561 #ifdef AMD_PRIVATE_COLOR
562 dm_crtc_additional_color_mgmt(&acrtc->base);