linux-kernel - [PATCH 37/45] drm/msm: add support for non-blocking commits

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Message-ID: <20241205-dp_mst-v1-37-f8618d42a99a@quicinc.com>
Date: Thu, 5 Dec 2024 20:32:08 -0800
From: Abhinav Kumar <quic_abhinavk@...cinc.com>
To: Rob Clark <robdclark@...il.com>,
        Dmitry Baryshkov
	<dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten
	<marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, "Simona
 Vetter" <simona@...ll.ch>,
        Stephen Boyd <swboyd@...omium.org>,
        "Chandan
 Uddaraju" <chandanu@...eaurora.org>,
        Guenter Roeck <groeck@...omium.org>,
        Kuogee Hsieh <quic_khsieh@...cinc.com>,
        Bjorn Andersson
	<andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring
	<robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>
CC: Vara Reddy <quic_varar@...cinc.com>, Rob Clark <robdclark@...omium.org>,
        Tanmay Shah <tanmay@...eaurora.org>, <linux-arm-msm@...r.kernel.org>,
        <dri-devel@...ts.freedesktop.org>, <freedreno@...ts.freedesktop.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        Jessica Zhang
	<quic_jesszhan@...cinc.com>,
        Laurent Pinchart
	<laurent.pinchart@...asonboard.com>,
        Abhinav Kumar
	<quic_abhinavk@...cinc.com>
Subject: [PATCH 37/45] drm/msm: add support for non-blocking commits

Hook up the mst framework APIs with atomic_commit_setup() and
atomic_commit_tail() APIs to handle non-blocking commits.

Signed-off-by: Abhinav Kumar <quic_abhinavk@...cinc.com>
---
 drivers/gpu/drm/msm/msm_atomic.c | 2 ++
 drivers/gpu/drm/msm/msm_drv.h    | 1 +
 drivers/gpu/drm/msm/msm_kms.c    | 1 +
 3 files changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c
index 9c45d641b5212c11078ab38c13a519663d85e10a..801399419c3d26f68d9b0a65d41fc4e1706c70be 100644
--- a/drivers/gpu/drm/msm/msm_atomic.c
+++ b/drivers/gpu/drm/msm/msm_atomic.c
@@ -210,6 +210,8 @@ void msm_atomic_commit_tail(struct drm_atomic_state *state)
 
 	trace_msm_atomic_commit_tail_start(async, crtc_mask);
 
+	drm_dp_mst_atomic_wait_for_dependencies(state);
+
 	kms->funcs->enable_commit(kms);
 
 	/*
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index d8c9a1b192632d3e29ff125bd7bb2d0bb491275d..1616a4682795f6b9b30cc0bef2baf448ccc62bc0 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -30,6 +30,7 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/display/drm_dsc.h>
+#include <drm/display/drm_dp_mst_helper.h>
 #include <drm/msm_drm.h>
 #include <drm/drm_gem.h>
 
diff --git a/drivers/gpu/drm/msm/msm_kms.c b/drivers/gpu/drm/msm/msm_kms.c
index f3326d09bdbce19d40d0b48549c330c2b836476f..343ad9e9988f6c8d99c5867cf8e81ae625aaa90d 100644
--- a/drivers/gpu/drm/msm/msm_kms.c
+++ b/drivers/gpu/drm/msm/msm_kms.c
@@ -28,6 +28,7 @@ static const struct drm_mode_config_funcs mode_config_funcs = {
 
 static const struct drm_mode_config_helper_funcs mode_config_helper_funcs = {
 	.atomic_commit_tail = msm_atomic_commit_tail,
+	.atomic_commit_setup = drm_dp_mst_atomic_setup_commit,
 };
 
 static irqreturn_t msm_irq(int irq, void *arg)

-- 
2.34.1