linux-kernel - [PATCH v2 32/38] drm/msm: add support for non-blocking commits

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250609-msm-dp-mst-v2-32-a54d8902a23d@quicinc.com>
Date: Mon, 9 Jun 2025 20:21:51 +0800
From: Yongxing Mou <quic_yongmou@...cinc.com>
To: Rob Clark <robin.clark@....qualcomm.com>,
        Dmitry Baryshkov
	<lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang
	<jessica.zhang@....qualcomm.com>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten
	<marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, "Simona
 Vetter" <simona@...ll.ch>
CC: <linux-arm-msm@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        <freedreno@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        "Yongxing
 Mou" <quic_yongmou@...cinc.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>
Subject: [PATCH v2 32/38] drm/msm: add support for non-blocking commits

From: Abhinav Kumar <quic_abhinavk@...cinc.com>

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 | 3 +++
 drivers/gpu/drm/msm/msm_kms.c    | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c
index 87a91148a731dc911f30695add4c8f5002770220..655a5c90487d7176422c2be630aa029d2c64042e 100644
--- a/drivers/gpu/drm/msm/msm_atomic.c
+++ b/drivers/gpu/drm/msm/msm_atomic.c
@@ -4,6 +4,7 @@
  * Author: Rob Clark <robdclark@...il.com>
  */
 
+#include <drm/display/drm_dp_mst_helper.h>
 #include <drm/drm_atomic_uapi.h>
 #include <drm/drm_vblank.h>
 
@@ -221,6 +222,8 @@ 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_kms.c b/drivers/gpu/drm/msm/msm_kms.c
index 35d5397e73b4c5cb90b1770e8570277e782be7ec..ec33afe27506892591e4c3e2671dab7a872b5525 100644
--- a/drivers/gpu/drm/msm/msm_kms.c
+++ b/drivers/gpu/drm/msm/msm_kms.c
@@ -10,6 +10,7 @@
 #include <linux/sched/mm.h>
 #include <uapi/linux/sched/types.h>
 
+#include <drm/display/drm_dp_mst_helper.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_mode_config.h>
 #include <drm/drm_vblank.h>
@@ -28,6 +29,7 @@ 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