From 552b831cd5e1d8ee0cf71e8af08734ef2b5aa7e4 Mon Sep 17 00:00:00 2001 From: "james qian wang (Arm Technology China)" Date: Tue, 22 Jan 2019 11:10:39 +0000 Subject: [PATCH] drm/komeda: Add komeda_release_unclaimed_resources Komeda driver treats KMS-CRTC/PLANE as user which will acquire pipeline resources, but we still need to release the unclaimed resources. crtc_atomic_check is the final check stage, so beside build a display data pipeline according the crtc_state, but still needs to release/disable the unclaimed pipeline resources. v2: Rebase Signed-off-by: James Qian Wang (Arm Technology China) Signed-off-by: Liviu Dudau --- .../gpu/drm/arm/display/komeda/komeda_crtc.c | 27 +++++++++ .../drm/arm/display/komeda/komeda_pipeline.h | 3 + .../display/komeda/komeda_pipeline_state.c | 58 +++++++++++++++++++ 3 files changed, 88 insertions(+) diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c index f88a14927be9..18209cae287c 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c @@ -18,6 +18,32 @@ #include "komeda_dev.h" #include "komeda_kms.h" +/* crtc_atomic_check is the final check stage, so beside build a display data + * pipeline according the crtc_state, but still needs to release/disable the + * unclaimed pipeline resources. + */ +static int +komeda_crtc_atomic_check(struct drm_crtc *crtc, + struct drm_crtc_state *state) +{ + struct komeda_crtc *kcrtc = to_kcrtc(crtc); + struct komeda_crtc_state *kcrtc_st = to_kcrtc_st(state); + int err; + + if (state->active) { + err = komeda_build_display_data_flow(kcrtc, kcrtc_st); + if (err) + return err; + } + + /* release unclaimed pipeline resources */ + err = komeda_release_unclaimed_resources(kcrtc->master, kcrtc_st); + if (err) + return err; + + return 0; +} + void komeda_crtc_handle_event(struct komeda_crtc *kcrtc, struct komeda_events *evts) { @@ -37,6 +63,7 @@ void komeda_crtc_handle_event(struct komeda_crtc *kcrtc, } struct drm_crtc_helper_funcs komeda_crtc_helper_funcs = { + .atomic_check = komeda_crtc_atomic_check, }; static const struct drm_crtc_funcs komeda_crtc_funcs = { diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h index 22ad4dfc3e8d..54b646128760 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h +++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h @@ -409,4 +409,7 @@ int komeda_build_layer_data_flow(struct komeda_layer *layer, int komeda_build_display_data_flow(struct komeda_crtc *kcrtc, struct komeda_crtc_state *kcrtc_st); +int komeda_release_unclaimed_resources(struct komeda_pipeline *pipe, + struct komeda_crtc_state *kcrtc_st); + #endif /* _KOMEDA_PIPELINE_H_*/ diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c index 8d25ce17e517..10137297b004 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c @@ -33,6 +33,18 @@ komeda_pipeline_get_state(struct komeda_pipeline *pipe, return priv_to_pipe_st(priv_st); } +struct komeda_pipeline_state * +komeda_pipeline_get_new_state(struct komeda_pipeline *pipe, + struct drm_atomic_state *state) +{ + struct drm_private_state *priv_st; + + priv_st = drm_atomic_get_new_private_obj_state(state, &pipe->obj); + if (priv_st) + return priv_to_pipe_st(priv_st); + return NULL; +} + /* Assign pipeline for crtc */ struct komeda_pipeline_state * komeda_pipeline_get_state_and_set_crtc(struct komeda_pipeline *pipe, @@ -480,3 +492,49 @@ int komeda_build_display_data_flow(struct komeda_crtc *kcrtc, return 0; } + +void komeda_pipeline_unbound_components(struct komeda_pipeline *pipe, + struct komeda_pipeline_state *new) +{ + struct drm_atomic_state *drm_st = new->obj.state; + struct komeda_pipeline_state *old = priv_to_pipe_st(pipe->obj.state); + struct komeda_component_state *c_st; + struct komeda_component *c; + u32 disabling_comps, id; + + WARN_ON(!old); + + disabling_comps = (~new->active_comps) & old->active_comps; + + /* unbound all disabling component */ + dp_for_each_set_bit(id, disabling_comps) { + c = komeda_pipeline_get_component(pipe, id); + c_st = komeda_component_get_state_and_set_user(c, + drm_st, NULL, new->crtc); + WARN_ON(IS_ERR(c_st)); + } +} + +/* release unclaimed pipeline resource */ +int komeda_release_unclaimed_resources(struct komeda_pipeline *pipe, + struct komeda_crtc_state *kcrtc_st) +{ + struct drm_atomic_state *drm_st = kcrtc_st->base.state; + struct komeda_pipeline_state *st; + + /* ignore the pipeline which is not affected */ + if (!pipe || !has_bit(pipe->id, kcrtc_st->affected_pipes)) + return 0; + + if (has_bit(pipe->id, kcrtc_st->active_pipes)) + st = komeda_pipeline_get_new_state(pipe, drm_st); + else + st = komeda_pipeline_get_state_and_set_crtc(pipe, drm_st, NULL); + + if (WARN_ON(IS_ERR_OR_NULL(st))) + return -EINVAL; + + komeda_pipeline_unbound_components(pipe, st); + + return 0; +}