linux-kernel - [PATCH] drm/msm/dpu: Adjust CDM

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-next>] [day] [month] [year] [list]

Message-ID: <20250305-cdm-cwb-mux-fix-v1-1-16148ca6e4d2@quicinc.com>
Date: Wed, 5 Mar 2025 19:16:51 -0800
From: Jessica Zhang <quic_jesszhan@...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>
CC: Abhinav Kumar <quic_abhinavk@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <dri-devel@...ts.freedesktop.org>, <freedreno@...ts.freedesktop.org>,
        <linux-kernel@...r.kernel.org>,
        "Jessica
 Zhang" <quic_jesszhan@...cinc.com>
Subject: [PATCH] drm/msm/dpu: Adjust CDM_MUX to support CWB PINGPONG

Similar to WB_MUX, CDM_MUX also needs to be adjusted to support
dedicated CWB PINGPONGs

Signed-off-by: Jessica Zhang <quic_jesszhan@...cinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.c
index ae1534c49ae0..3f88c3641d4a 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.c
@@ -214,7 +214,9 @@ static void dpu_hw_cdm_bind_pingpong_blk(struct dpu_hw_cdm *ctx, const enum dpu_
 	mux_cfg = DPU_REG_READ(c, CDM_MUX);
 	mux_cfg &= ~0xf;
 
-	if (pp)
+	if (pp >= PINGPONG_CWB_0)
+		mux_cfg |= 0xd;
+	else if (pp)
 		mux_cfg |= (pp - PINGPONG_0) & 0x7;
 	else
 		mux_cfg |= 0xf;

---
base-commit: 6d3175a72cc07e90f81fb35841048a8a9b5134cb
change-id: 20250305-cdm-cwb-mux-fix-69ed5297d4f7

Best regards,
-- 
Jessica Zhang <quic_jesszhan@...cinc.com>