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[2001:14ba:a073:af00:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5a126fcf563sm1522618e87.27.2026.03.05.06.30.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Mar 2026 06:30:51 -0800 (PST) From: Dmitry Baryshkov Date: Thu, 05 Mar 2026 16:30:43 +0200 Subject: [PATCH v4 1/9] drm/msm/dp: fix HPD state status bit shift value Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260305-hpd-refactor-v4-1-39c9d1fef321@oss.qualcomm.com> References: <20260305-hpd-refactor-v4-0-39c9d1fef321@oss.qualcomm.com> In-Reply-To: <20260305-hpd-refactor-v4-0-39c9d1fef321@oss.qualcomm.com> To: Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , Kuogee Hsieh , Yongxing Mou Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, Jessica Zhang X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1209; i=dmitry.baryshkov@oss.qualcomm.com; h=from:subject:message-id; bh=hzwfWK5+EPLPBOMgkg/4Azem10iuzkilPWoxif3rO60=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBpqZOYlpTbWo3CEyOsGYWNlPaqDWWExo3CkIsuF 0D84zyAIS2JATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCaamTmAAKCRCLPIo+Aiko 1Ua2CACOHrZcU20ETV8sAZ3SKCn35AIhtfhY1woMLphDSsS4bQFmltLTHXaKWBu/2yA4gRW29gJ 3NNse0O4xCty8GG6VNZvNHkgE4FahLW/ENcwEii/TSDuZCQTTcKmX0BMYgrAXJi19hpNwP7t0m3 TpZEhkFKgrF/yPtD42PqXsjgbymMmqp0OtC5JTpWAuVRzikl+fA+rO3rppSVU9bXf1YfO2ROqgm dQI4tedzx/EA9X+PsFVa1rtwc4Cq1jj19gJ+QLdO3f2tMOrAckzTVjAZecec/U4zVSysay0Olmi vTwCPjAyEksRF04Oqvr1K95P/kqXQmUbYlfkwYMX65TzZxco X-Developer-Key: i=dmitry.baryshkov@oss.qualcomm.com; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A X-Proofpoint-GUID: O1ZboEKb08SPdyGd66dS_fvcE4Gh819R X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzA1MDExNiBTYWx0ZWRfX7tLO6t+a75SK sA1XHPTjsbiR1dwTLMBJZlkr0RL9wVL47eyOKzp9btwIUYCZ0vNdYSCMeCELr7aLxjiqgnOJOch OGe7erdvQ7uRtCWyBSEXchsuZz+p7WKwbgG2ayZhgaBwz3Qca0Cc7bUr9vmGu7fJPLGxSLXl7Wm B5CvZWAHVQ9pfW1hsCOJyHQC/mHt8+PW8ixfIG7Hjz1vjmSXgiKRF0ov23G5MMF3QWXCW2Dfo2z oWg91ONDDOlcffxVTAtGn7ciXWywoHDTfR7r3R9C5/F/IDi+jKhfxw1R5lA/vyfEMh2aqjEJpKF NZ2LBqULT4zRrhmiwjr0KfHUSE/2+WsQU6Ik8jJ6t3a1i1hIpw8VnW6b1rZSuvW5Oi6oyjTAgbE X/v+bWTGTq+gcQ1hK9R1a/ChE/y3MY+5RJ0lZ1Xa7rXhagq6lormOLCwQQVVOJpcsBakX5yHz7h t4o3nToJ7Q9ZZTWGkOw== X-Authority-Analysis: v=2.4 cv=OYWVzxTY c=1 sm=1 tr=0 ts=69a9939f cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=EUspDBNiAAAA:8 a=IBRk8GtBIsankUNt0b0A:9 a=QEXdDO2ut3YA:10 a=NFOGd7dJGGMPyQGDc5-O:22 X-Proofpoint-ORIG-GUID: O1ZboEKb08SPdyGd66dS_fvcE4Gh819R X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-05_04,2026-03-04_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 impostorscore=0 adultscore=0 clxscore=1015 priorityscore=1501 spamscore=0 malwarescore=0 bulkscore=0 lowpriorityscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603050116 From: Jessica Zhang The HPD state status is the 3 most significant bits, not 4 bits of the HPD_INT_STATUS register. Fix the bit shift macro so that the correct bits are returned in msm_dp_aux_is_link_connected(). Fixes: 19e52bcb27c2 ("drm/msm/dp: return correct connection status after su= spend") Signed-off-by: Jessica Zhang Signed-off-by: Dmitry Baryshkov Reviewed-by: Konrad Dybcio --- drivers/gpu/drm/msm/dp/dp_reg.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/dp/dp_reg.h b/drivers/gpu/drm/msm/dp/dp_re= g.h index 7c44d4e2cf13..3689642b7fc0 100644 --- a/drivers/gpu/drm/msm/dp/dp_reg.h +++ b/drivers/gpu/drm/msm/dp/dp_reg.h @@ -68,8 +68,8 @@ #define DP_DP_IRQ_HPD_INT_ACK (0x00000002) #define DP_DP_HPD_REPLUG_INT_ACK (0x00000004) #define DP_DP_HPD_UNPLUG_INT_ACK (0x00000008) -#define DP_DP_HPD_STATE_STATUS_BITS_MASK (0x0000000F) -#define DP_DP_HPD_STATE_STATUS_BITS_SHIFT (0x1C) +#define DP_DP_HPD_STATE_STATUS_BITS_MASK (0x00000007) +#define DP_DP_HPD_STATE_STATUS_BITS_SHIFT (0x1D) =20 #define REG_DP_DP_HPD_INT_MASK (0x0000000C) #define DP_DP_HPD_PLUG_INT_MASK (0x00000001) --=20 2.47.3