diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 168 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 1 |
2 files changed, 78 insertions, 91 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 9c283531e1a2..ba0f53816057 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -4651,7 +4651,6 @@ dm_crtc_duplicate_state(struct drm_crtc *crtc) } state->active_planes = cur->active_planes; - state->interrupts_enabled = cur->interrupts_enabled; state->vrr_params = cur->vrr_params; state->vrr_infopacket = cur->vrr_infopacket; state->abm_level = cur->abm_level; @@ -5312,29 +5311,19 @@ static int count_crtc_active_planes(struct drm_crtc_state *new_crtc_state) return num_active; } -/* - * Sets whether interrupts should be enabled on a specific CRTC. - * We require that the stream be enabled and that there exist active - * DC planes on the stream. - */ -static void -dm_update_crtc_interrupt_state(struct drm_crtc *crtc, - struct drm_crtc_state *new_crtc_state) +static void dm_update_crtc_active_planes(struct drm_crtc *crtc, + struct drm_crtc_state *new_crtc_state) { struct dm_crtc_state *dm_new_crtc_state = to_dm_crtc_state(new_crtc_state); dm_new_crtc_state->active_planes = 0; - dm_new_crtc_state->interrupts_enabled = false; if (!dm_new_crtc_state->stream) return; dm_new_crtc_state->active_planes = count_crtc_active_planes(new_crtc_state); - - dm_new_crtc_state->interrupts_enabled = - dm_new_crtc_state->active_planes > 0; } static int dm_crtc_helper_atomic_check(struct drm_crtc *crtc, @@ -5345,13 +5334,7 @@ static int dm_crtc_helper_atomic_check(struct drm_crtc *crtc, struct dm_crtc_state *dm_crtc_state = to_dm_crtc_state(state); int ret = -EINVAL; - /* - * Update interrupt state for the CRTC. This needs to happen whenever - * the CRTC has changed or whenever any of its planes have changed. - * Atomic check satisfies both of these requirements since the CRTC - * is added to the state by DRM during drm_atomic_helper_check_planes. - */ - dm_update_crtc_interrupt_state(crtc, state); + dm_update_crtc_active_planes(crtc, state); if (unlikely(!dm_crtc_state->stream && modeset_required(state, NULL, dm_crtc_state->stream))) { @@ -6462,8 +6445,10 @@ static void manage_dm_interrupts(struct amdgpu_device *adev, bool enable) { /* - * this is not correct translation but will work as soon as VBLANK - * constant is the same as PFLIP + * We have no guarantee that the frontend index maps to the same + * backend index - some even map to more than one. + * + * TODO: Use a different interrupt or check DC itself for the mapping. */ int irq_type = amdgpu_display_crtc_idx_to_irq_type( @@ -6486,6 +6471,19 @@ static void manage_dm_interrupts(struct amdgpu_device *adev, } } +static void dm_update_pflip_irq_state(struct amdgpu_device *adev, + struct amdgpu_crtc *acrtc) +{ + int irq_type = + amdgpu_display_crtc_idx_to_irq_type(adev, acrtc->crtc_id); + + /** + * This reads the current state for the IRQ and force reapplies + * the setting to hardware. + */ + amdgpu_irq_update(adev, &adev->pageflip_irq, irq_type); +} + static bool is_scaling_state_different(const struct dm_connector_state *dm_state, const struct dm_connector_state *old_dm_state) @@ -7070,7 +7068,16 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state, usleep_range(1000, 1100); } - if (acrtc_attach->base.state->event) { + /** + * Prepare the flip event for the pageflip interrupt to handle. + * + * This only works in the case where we've already turned on the + * appropriate hardware blocks (eg. HUBP) so in the transition case + * from 0 -> n planes we have to skip a hardware generated event + * and rely on sending it from software. + */ + if (acrtc_attach->base.state->event && + acrtc_state->active_planes > 0) { drm_crtc_vblank_get(pcrtc); spin_lock_irqsave(&pcrtc->dev->event_lock, flags); @@ -7139,6 +7146,24 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state, &bundle->stream_update, dc_state); + /** + * Enable or disable the interrupts on the backend. + * + * Most pipes are put into power gating when unused. + * + * When power gating is enabled on a pipe we lose the + * interrupt enablement state when power gating is disabled. + * + * So we need to update the IRQ control state in hardware + * whenever the pipe turns on (since it could be previously + * power gated) or off (since some pipes can't be power gated + * on some ASICs). + */ + if (dm_old_crtc_state->active_planes != acrtc_state->active_planes) + dm_update_pflip_irq_state( + (struct amdgpu_device *)dev->dev_private, + acrtc_attach); + if ((acrtc_state->update_type > UPDATE_TYPE_FAST) && acrtc_state->stream->link->psr_settings.psr_version != DC_PSR_VERSION_UNSUPPORTED && !acrtc_state->stream->link->psr_settings.psr_feature_enabled) @@ -7240,64 +7265,6 @@ static void amdgpu_dm_commit_audio(struct drm_device *dev, } /* - * Enable interrupts on CRTCs that are newly active, undergone - * a modeset, or have active planes again. - * - * Done in two passes, based on the for_modeset flag: - * Pass 1: For CRTCs going through modeset - * Pass 2: For CRTCs going from 0 to n active planes - * - * Interrupts can only be enabled after the planes are programmed, - * so this requires a two-pass approach since we don't want to - * just defer the interrupts until after commit planes every time. - */ -static void amdgpu_dm_enable_crtc_interrupts(struct drm_device *dev, - struct drm_atomic_state *state, - bool for_modeset) -{ - struct amdgpu_device *adev = dev->dev_private; - struct drm_crtc *crtc; - struct drm_crtc_state *old_crtc_state, *new_crtc_state; - int i; -#ifdef CONFIG_DEBUG_FS - enum amdgpu_dm_pipe_crc_source source; -#endif - - for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, - new_crtc_state, i) { - struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc); - struct dm_crtc_state *dm_new_crtc_state = - to_dm_crtc_state(new_crtc_state); - struct dm_crtc_state *dm_old_crtc_state = - to_dm_crtc_state(old_crtc_state); - bool modeset = drm_atomic_crtc_needs_modeset(new_crtc_state); - bool run_pass; - - run_pass = (for_modeset && modeset) || - (!for_modeset && !modeset && - !dm_old_crtc_state->interrupts_enabled); - - if (!run_pass) - continue; - - if (!dm_new_crtc_state->interrupts_enabled) - continue; - - manage_dm_interrupts(adev, acrtc, true); - -#ifdef CONFIG_DEBUG_FS - /* The stream has changed so CRC capture needs to re-enabled. */ - source = dm_new_crtc_state->crc_src; - if (amdgpu_dm_is_valid_crc_source(source)) { - amdgpu_dm_crtc_configure_crc_source( - crtc, dm_new_crtc_state, - dm_new_crtc_state->crc_src); - } -#endif - } -} - -/* * amdgpu_dm_crtc_copy_transient_flags - copy mirrored flags from DRM to DC * @crtc_state: the DRM CRTC state * @stream_state: the DC stream state. @@ -7336,12 +7303,10 @@ static int amdgpu_dm_atomic_commit(struct drm_device *dev, * in atomic check. */ for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { - struct dm_crtc_state *dm_old_crtc_state = to_dm_crtc_state(old_crtc_state); - struct dm_crtc_state *dm_new_crtc_state = to_dm_crtc_state(new_crtc_state); struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc); - if (dm_old_crtc_state->interrupts_enabled && - (!dm_new_crtc_state->interrupts_enabled || + if (old_crtc_state->active && + (!new_crtc_state->active || drm_atomic_crtc_needs_modeset(new_crtc_state))) manage_dm_interrupts(adev, acrtc, false); } @@ -7620,8 +7585,34 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) dm_new_crtc_state); } - /* Enable interrupts for CRTCs going through a modeset. */ - amdgpu_dm_enable_crtc_interrupts(dev, state, true); + /** + * Enable interrupts for CRTCs that are newly enabled or went through + * a modeset. It was intentionally deferred until after the front end + * state was modified to wait until the OTG was on and so the IRQ + * handlers didn't access stale or invalid state. + */ + for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { + struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc); + + if (new_crtc_state->active && + (!old_crtc_state->active || + drm_atomic_crtc_needs_modeset(new_crtc_state))) { + manage_dm_interrupts(adev, acrtc, true); +#ifdef CONFIG_DEBUG_FS + /** + * Frontend may have changed so reapply the CRC capture + * settings for the stream. + */ + dm_new_crtc_state = to_dm_crtc_state(new_crtc_state); + + if (amdgpu_dm_is_valid_crc_source(dm_new_crtc_state->crc_src)) { + amdgpu_dm_crtc_configure_crc_source( + crtc, dm_new_crtc_state, + dm_new_crtc_state->crc_src); + } +#endif + } + } for_each_new_crtc_in_state(state, crtc, new_crtc_state, j) if (new_crtc_state->async_flip) @@ -7636,9 +7627,6 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) dm, crtc, wait_for_vblank); } - /* Enable interrupts for CRTCs going from 0 to n active planes. */ - amdgpu_dm_enable_crtc_interrupts(dev, state, false); - /* Update audio instances for each connector. */ amdgpu_dm_commit_audio(dev, state); diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h index 3f50328fe537..dd1559c743c2 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h @@ -414,7 +414,6 @@ struct dm_crtc_state { int update_type; int active_planes; - bool interrupts_enabled; int crc_skip_count; enum amdgpu_dm_pipe_crc_source crc_src; |