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Date: Tue, 25 Jun 2024 01:38:25 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Rob Clark <robdclark@...il.com>,
Abhinav Kumar <quic_abhinavk@...cinc.com>, Sean Paul <sean@...rly.run>,
Marijn Suijten <marijn.suijten@...ainline.org>,
David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Subject: [PATCH v3] drm/msm/dpu: remove CRTC frame event callback
registration
The frame event callback is always set to dpu_crtc_frame_event_cb() (or
to NULL) and the data is always either the CRTC itself or NULL
(correpondingly). Thus drop the event callback registration, call the
dpu_crtc_frame_event_cb() directly and gate on the dpu_enc->crtc
assigned using dpu_encoder_assign_crtc().
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
Changes in v3:
- Fixed documentation for dpu_crtc_frame_event_cb() to stop mentioning
registration. (Abhinav)
- Link to v2: https://lore.kernel.org/dri-devel/20231005220659.2404199-1-dmitry.baryshkov@linaro.org/
Changes in v2:
- Rebased on top of linux-next
- Link to v1: https://lore.kernel.org/dri-devel/20230102154748.951328-1-dmitry.baryshkov@linaro.org/
---
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 25 +++++++-----------
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h | 2 ++
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 41 +++++------------------------
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 10 -------
drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h | 4 ---
5 files changed, 18 insertions(+), 64 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index 9f2164782844..4c1be2f0555f 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -658,18 +658,18 @@ static void dpu_crtc_frame_event_work(struct kthread_work *work)
DPU_ATRACE_END("crtc_frame_event");
}
-/*
- * dpu_crtc_frame_event_cb - crtc frame event callback API. CRTC module
- * registers this API to encoder for all frame event callbacks like
- * frame_error, frame_done, idle_timeout, etc. Encoder may call different events
- * from different context - IRQ, user thread, commit_thread, etc. Each event
- * should be carefully reviewed and should be processed in proper task context
- * to avoid schedulin delay or properly manage the irq context's bottom half
- * processing.
+/**
+ * dpu_crtc_frame_event_cb - crtc frame event callback API
+ * @crtc: Pointer to crtc
+ * @event: Event to process
+ *
+ * Encoder may call this for different events from different context - IRQ,
+ * user thread, commit_thread, etc. Each event should be carefully reviewed and
+ * should be processed in proper task context to avoid schedulin delay or
+ * properly manage the irq context's bottom half processing.
*/
-static void dpu_crtc_frame_event_cb(void *data, u32 event)
+void dpu_crtc_frame_event_cb(struct drm_crtc *crtc, u32 event)
{
- struct drm_crtc *crtc = (struct drm_crtc *)data;
struct dpu_crtc *dpu_crtc;
struct msm_drm_private *priv;
struct dpu_crtc_frame_event *fevent;
@@ -1091,9 +1091,6 @@ static void dpu_crtc_disable(struct drm_crtc *crtc,
dpu_core_perf_crtc_update(crtc, 0);
- drm_for_each_encoder_mask(encoder, crtc->dev, crtc->state->encoder_mask)
- dpu_encoder_register_frame_event_callback(encoder, NULL, NULL);
-
memset(cstate->mixers, 0, sizeof(cstate->mixers));
cstate->num_mixers = 0;
@@ -1132,8 +1129,6 @@ static void dpu_crtc_enable(struct drm_crtc *crtc,
*/
if (dpu_encoder_get_intf_mode(encoder) == INTF_MODE_VIDEO)
request_bandwidth = true;
- dpu_encoder_register_frame_event_callback(encoder,
- dpu_crtc_frame_event_cb, (void *)crtc);
}
if (request_bandwidth)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
index 539b68b1626a..b26d5fe40c72 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
@@ -300,4 +300,6 @@ static inline enum dpu_crtc_client_type dpu_crtc_get_client_type(
return crtc && crtc->state ? RT_CLIENT : NRT_CLIENT;
}
+void dpu_crtc_frame_event_cb(struct drm_crtc *crtc, u32 event);
+
#endif /* _DPU_CRTC_H_ */
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 708657598cce..4099e72820f9 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -151,8 +151,6 @@ enum dpu_enc_rc_states {
* @frame_busy_mask: Bitmask tracking which phys_enc we are still
* busy processing current command.
* Bit0 = phys_encs[0] etc.
- * @crtc_frame_event_cb: callback handler for frame event
- * @crtc_frame_event_cb_data: callback handler private data
* @frame_done_timeout_ms: frame done timeout in ms
* @frame_done_timeout_cnt: atomic counter tracking the number of frame
* done timeouts
@@ -192,8 +190,6 @@ struct dpu_encoder_virt {
struct mutex enc_lock;
DECLARE_BITMAP(frame_busy_mask, MAX_PHYS_ENCODERS_PER_VIRTUAL);
- void (*crtc_frame_event_cb)(void *, u32 event);
- void *crtc_frame_event_cb_data;
atomic_t frame_done_timeout_ms;
atomic_t frame_done_timeout_cnt;
@@ -1456,28 +1452,6 @@ void dpu_encoder_toggle_vblank_for_crtc(struct drm_encoder *drm_enc,
}
}
-void dpu_encoder_register_frame_event_callback(struct drm_encoder *drm_enc,
- void (*frame_event_cb)(void *, u32 event),
- void *frame_event_cb_data)
-{
- struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(drm_enc);
- unsigned long lock_flags;
- bool enable;
-
- enable = frame_event_cb ? true : false;
-
- if (!drm_enc) {
- DPU_ERROR("invalid encoder\n");
- return;
- }
- trace_dpu_enc_frame_event_cb(DRMID(drm_enc), enable);
-
- spin_lock_irqsave(&dpu_enc->enc_spinlock, lock_flags);
- dpu_enc->crtc_frame_event_cb = frame_event_cb;
- dpu_enc->crtc_frame_event_cb_data = frame_event_cb_data;
- spin_unlock_irqrestore(&dpu_enc->enc_spinlock, lock_flags);
-}
-
void dpu_encoder_frame_done_callback(
struct drm_encoder *drm_enc,
struct dpu_encoder_phys *ready_phys, u32 event)
@@ -1517,15 +1491,12 @@ void dpu_encoder_frame_done_callback(
dpu_encoder_resource_control(drm_enc,
DPU_ENC_RC_EVENT_FRAME_DONE);
- if (dpu_enc->crtc_frame_event_cb)
- dpu_enc->crtc_frame_event_cb(
- dpu_enc->crtc_frame_event_cb_data,
- event);
+ if (dpu_enc->crtc)
+ dpu_crtc_frame_event_cb(dpu_enc->crtc, event);
}
} else {
- if (dpu_enc->crtc_frame_event_cb)
- dpu_enc->crtc_frame_event_cb(
- dpu_enc->crtc_frame_event_cb_data, event);
+ if (dpu_enc->crtc)
+ dpu_crtc_frame_event_cb(dpu_enc->crtc, event);
}
}
@@ -2459,7 +2430,7 @@ static void dpu_encoder_frame_done_timeout(struct timer_list *t)
return;
}
- if (!dpu_enc->frame_busy_mask[0] || !dpu_enc->crtc_frame_event_cb) {
+ if (!dpu_enc->frame_busy_mask[0] || !dpu_enc->crtc) {
DRM_DEBUG_KMS("id:%u invalid timeout frame_busy_mask=%lu\n",
DRMID(drm_enc), dpu_enc->frame_busy_mask[0]);
return;
@@ -2475,7 +2446,7 @@ static void dpu_encoder_frame_done_timeout(struct timer_list *t)
event = DPU_ENCODER_FRAME_EVENT_ERROR;
trace_dpu_enc_frame_done_timeout(DRMID(drm_enc), event);
- dpu_enc->crtc_frame_event_cb(dpu_enc->crtc_frame_event_cb_data, event);
+ dpu_crtc_frame_event_cb(dpu_enc->crtc, event);
}
static const struct drm_encoder_helper_funcs dpu_encoder_helper_funcs = {
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
index 76be77e30954..fab08e68b41b 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
@@ -55,16 +55,6 @@ void dpu_encoder_assign_crtc(struct drm_encoder *encoder,
void dpu_encoder_toggle_vblank_for_crtc(struct drm_encoder *encoder,
struct drm_crtc *crtc, bool enable);
-/**
- * dpu_encoder_register_frame_event_callback - provide callback to encoder that
- * will be called after the request is complete, or other events.
- * @encoder: encoder pointer
- * @cb: callback pointer, provide NULL to deregister
- * @data: user data provided to callback
- */
-void dpu_encoder_register_frame_event_callback(struct drm_encoder *encoder,
- void (*cb)(void *, u32), void *data);
-
/**
* dpu_encoder_prepare_for_kickoff - schedule double buffer flip of the ctl
* path (i.e. ctl flush and start) at next appropriate time.
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h
index 0fdd41162e4b..5307cbc2007c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h
@@ -354,10 +354,6 @@ DEFINE_EVENT(dpu_enc_id_enable_template, dpu_enc_vblank_cb,
TP_PROTO(uint32_t drm_id, bool enable),
TP_ARGS(drm_id, enable)
);
-DEFINE_EVENT(dpu_enc_id_enable_template, dpu_enc_frame_event_cb,
- TP_PROTO(uint32_t drm_id, bool enable),
- TP_ARGS(drm_id, enable)
-);
DEFINE_EVENT(dpu_enc_id_enable_template, dpu_enc_phys_cmd_connect_te,
TP_PROTO(uint32_t drm_id, bool enable),
TP_ARGS(drm_id, enable)
---
base-commit: f76698bd9a8ca01d3581236082d786e9a6b72bb7
change-id: 20240625-dpu-no-crtc-register-65a8e05c90bd
Best regards,
--
Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
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