diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 86 |
1 files changed, 65 insertions, 21 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 a3dc7ab523de..c82048cb901d 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -3438,6 +3438,8 @@ dm_crtc_duplicate_state(struct drm_crtc *crtc) dc_stream_retain(state->stream); } + 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; @@ -3862,7 +3864,7 @@ static void dm_crtc_helper_disable(struct drm_crtc *crtc) { } -static bool does_crtc_have_active_plane(struct drm_crtc_state *new_crtc_state) +static int count_crtc_active_planes(struct drm_crtc_state *new_crtc_state) { struct drm_atomic_state *state = new_crtc_state->state; struct drm_plane *plane; @@ -3891,7 +3893,32 @@ static bool does_crtc_have_active_plane(struct drm_crtc_state *new_crtc_state) num_active += (new_plane_state->fb != NULL); } - return num_active > 0; + 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) +{ + 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, @@ -3902,6 +3929,14 @@ 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); + if (unlikely(!dm_crtc_state->stream && modeset_required(state, NULL, dm_crtc_state->stream))) { WARN_ON(1); @@ -3914,7 +3949,7 @@ static int dm_crtc_helper_atomic_check(struct drm_crtc *crtc, /* We want at least one hardware plane enabled to use the stream. */ if (state->enable && state->active && - !does_crtc_have_active_plane(state)) + dm_crtc_state->active_planes == 0) return -EINVAL; if (dc_validate_stream(dc, dm_crtc_state->stream) == DC_OK) @@ -5390,24 +5425,33 @@ static int amdgpu_dm_atomic_commit(struct drm_device *dev, int i; /* - * We evade vblanks and pflips on crtc that - * should be changed. We do it here to flush & disable - * interrupts before drm_swap_state is called in drm_atomic_helper_commit - * it will update crtc->dm_crtc_state->stream pointer which is used in - * the ISRs. + * We evade vblank and pflip interrupts on CRTCs that are undergoing + * a modeset, being disabled, or have no active planes. + * + * It's done in atomic commit rather than commit tail for now since + * some of these interrupt handlers access the current CRTC state and + * potentially the stream pointer itself. + * + * Since the atomic state is swapped within atomic commit and not within + * commit tail this would leave to new state (that hasn't been committed yet) + * being accesssed from within the handlers. + * + * TODO: Fix this so we can do this in commit tail and not have to block + * 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 (drm_atomic_crtc_needs_modeset(new_crtc_state) - && dm_old_crtc_state->stream) { + if (dm_old_crtc_state->interrupts_enabled && + (!dm_new_crtc_state->interrupts_enabled || + drm_atomic_crtc_needs_modeset(new_crtc_state))) { /* * If the stream is removed and CRC capture was * enabled on the CRTC the extra vblank reference - * needs to be dropped since CRC capture will be - * disabled. + * needs to be dropped since CRC capture will not + * be re-enabled. */ if (!dm_new_crtc_state->stream && dm_new_crtc_state->crc_enabled) { @@ -5635,13 +5679,14 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) pre_update_freesync_state_on_stream(dm, dm_new_crtc_state); } + /* + * Enable interrupts on CRTCs that are newly active, undergone + * a modeset, or have active planes again. + */ for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { - /* - * loop to enable interrupts on newly arrived crtc - */ struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc); - bool modeset_needed; + bool enable; if (old_crtc_state->active && !new_crtc_state->active) crtc_disable_count++; @@ -5653,12 +5698,11 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) amdgpu_dm_handle_vrr_transition(dm_old_crtc_state, dm_new_crtc_state); - modeset_needed = modeset_required( - new_crtc_state, - dm_new_crtc_state->stream, - dm_old_crtc_state->stream); + enable = dm_new_crtc_state->interrupts_enabled && + (!dm_old_crtc_state->interrupts_enabled || + drm_atomic_crtc_needs_modeset(new_crtc_state)); - if (dm_new_crtc_state->stream == NULL || !modeset_needed) + if (!enable) continue; manage_dm_interrupts(adev, acrtc, true); |