From patchwork Mon Mar 24 11:51:22 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 875823 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3564E25E45F for ; Mon, 24 Mar 2025 11:51:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742817099; cv=none; b=G0TYVAPzIv449GTM5dG+/Vi3glxT+iyRCOF9F8r1obiLWgcoytzZ8EiSElTWfPkSzg2PUF7/0aF9hjsrT0ayfU+ERuZKYPgkIb1TElRI4MS28hv57Cr5MfOi8P+U4Qt7DbUZh3qZFnLoThevI22+BcrGAbSvEXgM0qJhQgKa+p0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742817099; c=relaxed/simple; bh=86F5pdRlv88khWZ04dZw/iDU5RbACl7IwpCgSIsUn6A=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=tzC2hDtl04woR42H6tDKZTS1m9lo7YSiAvnqFo9Cj9M1fjqNNW34Mmjgt/YywITj51J6HGTfsTaquxeXPoJjHPUSSnL3ItjQ/9E1E6rzJTU7mivG8agKO2MgXmcpSPacfcniWgT/+BX74ne3SUTNiDlgykxfUhowbCZfnT0zz/Q= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=E33hlGXi; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="E33hlGXi" Received: from pps.filterd (m0279869.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 52O9PMJ1004763 for ; Mon, 24 Mar 2025 11:51:36 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= cbVY8Zk+Bw747ivKpsWKnew31zOXihiyANI1TT91neA=; b=E33hlGXiVATQrshM FVfIbT1LYmJkeD80CGXjTlky87mDggWTcQ12wK9stj/qqRBmPKL7qaJyqBCXyM23 31vdxqbUGBzIXpZkDjAqPVzuwmPMamLyHsMFzp8xGS5AKLYa5YZblENHrg71gi7Z 2+lg5RsDoyK8NA3PI3tO/wk7fbKmNMwSBsKLruG/fkvhglfVxk+eYHFOcgmwdBNJ j4GCBID9fHEwAucaUVnFHivvGfvRMQk55VJYdbPCiW4gKFCZth++2++nABqEOSDx NIttderiKIInB4thKMbKZWTUKtGJT3Vsjf61+2EPFBlXzzM731zxPJR31ccWfxDb WgRr9Q== Received: from mail-qk1-f198.google.com (mail-qk1-f198.google.com [209.85.222.198]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 45hm79ma9v-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Mon, 24 Mar 2025 11:51:35 +0000 (GMT) Received: by mail-qk1-f198.google.com with SMTP id af79cd13be357-7c5d608e6f5so93285685a.0 for ; Mon, 24 Mar 2025 04:51:35 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1742817095; x=1743421895; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=cbVY8Zk+Bw747ivKpsWKnew31zOXihiyANI1TT91neA=; b=gnMgWgr3OgdF04n8gDx2RE3P2Qb7/kWrP6joULMepsGVJILwivRWkQZ7Zl2jB8cyXH 07NGpaO9iN5czGAo8leaatLa64jNKeWhYpQt+Dej9DYaJ4OqU6FwVnb84Fkx3ndrgmA8 wsbjV9Nitpwtc6VR1Ur37iokhmVDjTQ8lEscPB0Ae8x+dQLJ0oBJ97qYisqriWxNHF1p VH79qjgfUWOP/kg5fw+ExbP5156bOrsWGaWBepq6UINPXnREQKnIgGK1bCG4tqCw1/Az zjT8O6GeTOvTlD0cPnVUhBBJVJJVdvrcig4voGKCKN8TFIqxcBHoVmDIeqYA790OJd9K jI8Q== X-Forwarded-Encrypted: i=1; AJvYcCVEkL+tjkV/yFMqZd48AmHSl+ZrkivbXb3TeyHOb5u2BlGkd6Wv6JzkT8lOSznU+uUvfY4j4aWxCUFx7gf+@vger.kernel.org X-Gm-Message-State: AOJu0YyHuweppu68yfipJu1rOPRtJel1Ro6JwyMJ/ETnPfOqeiSCXbRK FFhMNG6NWLMITN3BR7OCqsVJJqbpGmJqPGftGQdeo4iUks0GqMenCP91YTUEu6vb+JSJ3ocPrqj 0CRKCJKjHd4TXYB66pKUWqsvgH5eoJ2tb6qJV8zrwPe8UgPjQ66Mj+GSDPHEjlwX4 X-Gm-Gg: ASbGncs03Ar8kLSx7UyuXc4M+aHJ28avB1uvvZCnGXsOOWSEbDUaXIcA7Ck+jQWDYcn IAG+I5+KbsrutxvOj8X5zS92eJ4NGIoiehatpsah0rqgDcJfR9syylqaRP6N/eZ37rD6X+ogZT0 CpDDMxcZ0WHk+xs7EDde176nf4HbksbuaBm/DbI5LvoYcEIDzEOCj8fgi47ihj1bjKhYAMo0k6P u0lk/Z4jKxye91HF/MDC7bPg6/ETWPg8pO37CBsK9kP+lWh+IKxI2VQFVILe94sZIVKzEnVUHpI sFVjFVSFDHpZfaN2dsFrV+xYfJjqcJJoiihEAi2cdcXOmwudyWFHjhYzFrqm5we3OPEsEEdjegz NxHx6e7jOqmx0RVykVfReA/se5Ftu X-Received: by 2002:a05:620a:31a4:b0:7c5:3ef2:8c40 with SMTP id af79cd13be357-7c5ba13371emr1765957785a.12.1742817094549; Mon, 24 Mar 2025 04:51:34 -0700 (PDT) X-Google-Smtp-Source: AGHT+IEg0k94jmPD+RxovZl/zqq2uTWR2GTxdEZ29Cc9DCcLMRxUjW46zVufE6pscz39TWnXIul+EA== X-Received: by 2002:a05:620a:31a4:b0:7c5:3ef2:8c40 with SMTP id af79cd13be357-7c5ba13371emr1765950185a.12.1742817093974; Mon, 24 Mar 2025 04:51:33 -0700 (PDT) Received: from umbar.lan (2001-14ba-a0c3-3a00-264b-feff-fe8b-be8a.rev.dnainternet.fi. [2001:14ba:a0c3:3a00:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-54ad64fbb51sm1142907e87.135.2025.03.24.04.51.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Mar 2025 04:51:33 -0700 (PDT) From: Dmitry Baryshkov Date: Mon, 24 Mar 2025 13:51:22 +0200 Subject: [PATCH RESEND RFC v4 4/6] drm/display: dp-cec: use new DCPD access helpers Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250324-drm-rework-dpcd-access-v4-4-e80ff89593df@oss.qualcomm.com> References: <20250324-drm-rework-dpcd-access-v4-0-e80ff89593df@oss.qualcomm.com> In-Reply-To: <20250324-drm-rework-dpcd-access-v4-0-e80ff89593df@oss.qualcomm.com> To: Lyude Paul , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Clark , Abhinav Kumar , Sean Paul , Marijn Suijten , Jani Nikula , Alex Deucher , =?utf-8?q?Christian_K=C3=B6nig?= , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Xinliang Liu , Tian Tao , Xinwei Kong , Sumit Semwal , Yongqin Liu , John Stultz Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, Dmitry Baryshkov , Jani Nikula X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=5086; i=dmitry.baryshkov@oss.qualcomm.com; h=from:subject:message-id; bh=d/g0s+1RbkEZsu0cFrspMKQl16Oh0pnUASV91YvLy1M=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBn4Uc4qY7c2KAxUD5W9eg477Vs/ZegX4vkSQNj8 MEzvsWNoiyJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZ+FHOAAKCRCLPIo+Aiko 1ZKJB/9fjUpYke46Wsol0rc+zMKNqgf3P68MvK2G+RUyxuntyFuvFAcQCCXZGZk7Xij5w1MDBMP UZeulEkuNwt9D1Met6H71wl8L8SvhmZVIlFhAs+CTGA0WCh1w2ZeID47mf+FuqqI0MTvQoTpvtX ukAPtLT0uS61M/IPRpwpc34YM83bbxMlxBCo/qOI++60KOmQCkiGKmwIeGSzsCJkkkd6jNP/gKG RUwWvSklDyqZoAGFAHa0k7WPtmsNo4bBmMdtrnJX1UJoPaENZOjX+YaQwbLSkM36cINZbA/CXsk NsFv8VNJLSZEkxX0whPBJaBEO6k9lfnirnzKgormGFQDBzeN X-Developer-Key: i=dmitry.baryshkov@oss.qualcomm.com; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A X-Proofpoint-GUID: zuoA-ISJLswtHiO_Wq8YU7mGF-Lpqj9u X-Proofpoint-ORIG-GUID: zuoA-ISJLswtHiO_Wq8YU7mGF-Lpqj9u X-Authority-Analysis: v=2.4 cv=IKYCChvG c=1 sm=1 tr=0 ts=67e14747 cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=Vs1iUdzkB0EA:10 a=KKAkSRfTAAAA:8 a=20KFwNOVAAAA:8 a=QyXUC8HyAAAA:8 a=Bz2Z_qUYR0Plbu_cxIUA:9 a=QEXdDO2ut3YA:10 a=NFOGd7dJGGMPyQGDc5-O:22 a=cvBusfyB2V15izCimMoJ:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1093,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-03-24_04,2025-03-21_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 phishscore=0 lowpriorityscore=0 impostorscore=0 bulkscore=0 spamscore=0 priorityscore=1501 adultscore=0 malwarescore=0 mlxlogscore=999 mlxscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2502280000 definitions=main-2503240086 From: Dmitry Baryshkov Switch drm_dp_cec.c to use new set of DPCD read / write helpers. Reviewed-by: Lyude Paul Acked-by: Jani Nikula Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/display/drm_dp_cec.c | 37 ++++++++++++++++++------------------ 1 file changed, 18 insertions(+), 19 deletions(-) diff --git a/drivers/gpu/drm/display/drm_dp_cec.c b/drivers/gpu/drm/display/drm_dp_cec.c index 56a4965e518cc237c992a2e31b9f6de05c14766a..ed31471bd0e28826254ecedac48c5c126729d470 100644 --- a/drivers/gpu/drm/display/drm_dp_cec.c +++ b/drivers/gpu/drm/display/drm_dp_cec.c @@ -96,7 +96,7 @@ static int drm_dp_cec_adap_enable(struct cec_adapter *adap, bool enable) u32 val = enable ? DP_CEC_TUNNELING_ENABLE : 0; ssize_t err = 0; - err = drm_dp_dpcd_writeb(aux, DP_CEC_TUNNELING_CONTROL, val); + err = drm_dp_dpcd_write_byte(aux, DP_CEC_TUNNELING_CONTROL, val); return (enable && err < 0) ? err : 0; } @@ -112,7 +112,7 @@ static int drm_dp_cec_adap_log_addr(struct cec_adapter *adap, u8 addr) la_mask |= adap->log_addrs.log_addr_mask | (1 << addr); mask[0] = la_mask & 0xff; mask[1] = la_mask >> 8; - err = drm_dp_dpcd_write(aux, DP_CEC_LOGICAL_ADDRESS_MASK, mask, 2); + err = drm_dp_dpcd_write_data(aux, DP_CEC_LOGICAL_ADDRESS_MASK, mask, 2); return (addr != CEC_LOG_ADDR_INVALID && err < 0) ? err : 0; } @@ -123,15 +123,14 @@ static int drm_dp_cec_adap_transmit(struct cec_adapter *adap, u8 attempts, unsigned int retries = min(5, attempts - 1); ssize_t err; - err = drm_dp_dpcd_write(aux, DP_CEC_TX_MESSAGE_BUFFER, - msg->msg, msg->len); + err = drm_dp_dpcd_write_data(aux, DP_CEC_TX_MESSAGE_BUFFER, + msg->msg, msg->len); if (err < 0) return err; - err = drm_dp_dpcd_writeb(aux, DP_CEC_TX_MESSAGE_INFO, - (msg->len - 1) | (retries << 4) | - DP_CEC_TX_MESSAGE_SEND); - return err < 0 ? err : 0; + return drm_dp_dpcd_write_byte(aux, DP_CEC_TX_MESSAGE_INFO, + (msg->len - 1) | (retries << 4) | + DP_CEC_TX_MESSAGE_SEND); } static int drm_dp_cec_adap_monitor_all_enable(struct cec_adapter *adap, @@ -144,13 +143,13 @@ static int drm_dp_cec_adap_monitor_all_enable(struct cec_adapter *adap, if (!(adap->capabilities & CEC_CAP_MONITOR_ALL)) return 0; - err = drm_dp_dpcd_readb(aux, DP_CEC_TUNNELING_CONTROL, &val); - if (err >= 0) { + err = drm_dp_dpcd_read_byte(aux, DP_CEC_TUNNELING_CONTROL, &val); + if (!err) { if (enable) val |= DP_CEC_SNOOPING_ENABLE; else val &= ~DP_CEC_SNOOPING_ENABLE; - err = drm_dp_dpcd_writeb(aux, DP_CEC_TUNNELING_CONTROL, val); + err = drm_dp_dpcd_write_byte(aux, DP_CEC_TUNNELING_CONTROL, val); } return (enable && err < 0) ? err : 0; } @@ -194,7 +193,7 @@ static int drm_dp_cec_received(struct drm_dp_aux *aux) u8 rx_msg_info; ssize_t err; - err = drm_dp_dpcd_readb(aux, DP_CEC_RX_MESSAGE_INFO, &rx_msg_info); + err = drm_dp_dpcd_read_byte(aux, DP_CEC_RX_MESSAGE_INFO, &rx_msg_info); if (err < 0) return err; @@ -202,7 +201,7 @@ static int drm_dp_cec_received(struct drm_dp_aux *aux) return 0; msg.len = (rx_msg_info & DP_CEC_RX_MESSAGE_LEN_MASK) + 1; - err = drm_dp_dpcd_read(aux, DP_CEC_RX_MESSAGE_BUFFER, msg.msg, msg.len); + err = drm_dp_dpcd_read_data(aux, DP_CEC_RX_MESSAGE_BUFFER, msg.msg, msg.len); if (err < 0) return err; @@ -215,7 +214,7 @@ static void drm_dp_cec_handle_irq(struct drm_dp_aux *aux) struct cec_adapter *adap = aux->cec.adap; u8 flags; - if (drm_dp_dpcd_readb(aux, DP_CEC_TUNNELING_IRQ_FLAGS, &flags) < 0) + if (drm_dp_dpcd_read_byte(aux, DP_CEC_TUNNELING_IRQ_FLAGS, &flags) < 0) return; if (flags & DP_CEC_RX_MESSAGE_INFO_VALID) @@ -230,7 +229,7 @@ static void drm_dp_cec_handle_irq(struct drm_dp_aux *aux) (DP_CEC_TX_ADDRESS_NACK_ERROR | DP_CEC_TX_DATA_NACK_ERROR)) cec_transmit_attempt_done(adap, CEC_TX_STATUS_NACK | CEC_TX_STATUS_MAX_RETRIES); - drm_dp_dpcd_writeb(aux, DP_CEC_TUNNELING_IRQ_FLAGS, flags); + drm_dp_dpcd_write_byte(aux, DP_CEC_TUNNELING_IRQ_FLAGS, flags); } /** @@ -253,13 +252,13 @@ void drm_dp_cec_irq(struct drm_dp_aux *aux) if (!aux->cec.adap) goto unlock; - ret = drm_dp_dpcd_readb(aux, DP_DEVICE_SERVICE_IRQ_VECTOR_ESI1, - &cec_irq); + ret = drm_dp_dpcd_read_byte(aux, DP_DEVICE_SERVICE_IRQ_VECTOR_ESI1, + &cec_irq); if (ret < 0 || !(cec_irq & DP_CEC_IRQ)) goto unlock; drm_dp_cec_handle_irq(aux); - drm_dp_dpcd_writeb(aux, DP_DEVICE_SERVICE_IRQ_VECTOR_ESI1, DP_CEC_IRQ); + drm_dp_dpcd_write_byte(aux, DP_DEVICE_SERVICE_IRQ_VECTOR_ESI1, DP_CEC_IRQ); unlock: mutex_unlock(&aux->cec.lock); } @@ -269,7 +268,7 @@ static bool drm_dp_cec_cap(struct drm_dp_aux *aux, u8 *cec_cap) { u8 cap = 0; - if (drm_dp_dpcd_readb(aux, DP_CEC_TUNNELING_CAPABILITY, &cap) != 1 || + if (drm_dp_dpcd_read_byte(aux, DP_CEC_TUNNELING_CAPABILITY, &cap) < 0 || !(cap & DP_CEC_TUNNELING_CAPABLE)) return false; if (cec_cap)