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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-35a02fc9454sm8604577a91.12.2026.03.13.03.31.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Mar 2026 03:31:29 -0700 (PDT) From: Anvesh Jain P Subject: [PATCH v4 0/5] Add driver for EC found on Qualcomm reference devices Date: Fri, 13 Mar 2026 15:59:50 +0530 Message-Id: <20260313-v04-add-driver-for-ec-v4-0-ca9d0efd62aa@oss.qualcomm.com> 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: 7bit X-B4-Tracking: v=1; b=H4sIAB7ns2kC/x3MPQqAMAxA4atIZgOlFv+uIg7FpJqllRSKIL27x fEb3nshswpnWLsXlItkSbHB9R0cl48no1AzWGNHM5gFi3HoiZBUCiuGpMgHDsG7aQ52dLRAa2/ lIM//3fZaP1XmnpJnAAAA X-Change-ID: 20260309-v04-add-driver-for-ec-3fa478f264d9 To: Sibi Sankar , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Bryan O'Donoghue , Bjorn Andersson , Konrad Dybcio Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, Anvesh Jain P , Maya Matuszczyk X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1773397885; l=2305; i=anvesh.p@oss.qualcomm.com; s=20260313; h=from:subject:message-id; bh=TTPfE74ynPJN9b0OOnOsT+rSVtyz9eUegjhUH7fvCBo=; b=3ZA4rgLhqraUUDW9rwTy5mi2UvBaO29qgScvpkuuazpoP3Bs4x4KM4mzdsOrUThZmUcDkZCpx Nvva5Dc47DQAxlLtZIdP4QRxL6sUJrUDicIiGD96BuFa+q5EKIdAKEr X-Developer-Key: i=anvesh.p@oss.qualcomm.com; a=ed25519; pk=8o9EG7gkPe2Er9y9UVCx8MTdcFCwU8Pa54hBZPuduXE= X-Proofpoint-ORIG-GUID: n7r-Enw-GPrQMVRb64qVaUaIxhRHfGXT X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzEzMDA4MiBTYWx0ZWRfX/KGezW9Rko4o VJhmTHLitqGu9DzQUHvssndOog4LVP5jnKxnWl+v4XgInGep8gtKaPEx1J8I68tmW/Tbt4ns/hy UZoZ7W6djIg0gapo0UT0ueHUhldh0SXmb52RUtpeB40SUB+ipMA8NZSujRNgzoqud2OYvA0NdRG XbfveKqWR+ONeG7KvC3+bSv1CGQbJSo35yvvaZwqxY1JJNeaopFSnkrqGdNkiQeT8I0wrVw0yeU cKGrN/XCK382xqsqdq2Pswr4s5Y6JzjgnUdMWjhcEJtjhcNBqQ6vpxlbfS4nzc81hnY0VNVQF3c OU6iCNJBtNWVn8nbXt7flrLQ8rGzAA6D6i4hJdyh2keUNk1FBqfVb9a7RdzXXqJqsbuqSX2YbSk wJ42kZpqldKPNRnu2UJbrt9cN3hXATocpwNmIunIZflYuWLMR/WJr1Hb4xsoiVtNd0S7IKUUhDP 7AqDdkRZtHXwJhBrAMw== X-Proofpoint-GUID: n7r-Enw-GPrQMVRb64qVaUaIxhRHfGXT X-Authority-Analysis: v=2.4 cv=GoNPO01C c=1 sm=1 tr=0 ts=69b3e783 cx=c_pps a=RP+M6JBNLl+fLTcSJhASfg==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=pGLkceISAAAA:8 a=TKT8svA-RhVekAZBPK0A:9 a=QEXdDO2ut3YA:10 a=iS9zxrgQBfv6-_F4QbHw:22 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=2026-03-13_02,2026-03-12_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 malwarescore=0 lowpriorityscore=0 spamscore=0 impostorscore=0 bulkscore=0 priorityscore=1501 phishscore=0 clxscore=1011 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603130082 From: Anvesh Jain P Add Embedded controller driver support for Hamoa/Purwa/Glymur Qualcomm reference boards. It handles fan control, temperature sensors, access to EC state changes and supports reporting suspend entry/exit to the EC. --- Changes in v4: - Fix fan count calculation to use min() instead of max() to correctly cap fan_cnt at EC_MAX_FAN_CNT. - Remove unnecessary mutex lock/unlock. - Disable fan debug mode on ec module removal. - Fix issue reported by kernel test robot. - Consolidate hamoa-iot-evk specific changes into hamoa-iot-evk.dts. - Add board-specific compatible strings as per review comments. - Link to v3: https://lore.kernel.org/all/20260308233646.2318676-1-sibi.sankar@oss.qualcomm.com/ Changes in v3: - Revamp the bindings and driver to support generic ec specification that works across Qualcomm Hamoa/Purwa and Glymur reference devices. - Add ec nodes to Hamoa/Purwa CRDs and IOT-EVKs. - Add ec node to Glymur CRDs. - Link to v2: https://lore.kernel.org/lkml/20241219200821.8328-1-maccraft123mc@gmail.com/ - Link to v1: https://lore.kernel.org/lkml/20240927185345.3680-1-maccraft123mc@gmail.com/ --- Maya Matuszczyk (1): dt-bindings: embedded-controller: Add EC bindings for Qualcomm reference devices Sibi Sankar (4): platform: arm64: Add driver for EC found on Qualcomm reference devices arm64: dts: qcom: glymur-crd: Add Embedded controller node arm64: dts: qcom: x1-crd: Add Embedded controller node arm64: dts: qcom: hamoa-iot-evk: Add Embedded controller node .../embedded-controller/qcom,hamoa-ec.yaml | 56 +++ MAINTAINERS | 8 + arch/arm64/boot/dts/qcom/glymur-crd.dts | 22 + arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts | 16 + arch/arm64/boot/dts/qcom/x1-crd.dtsi | 16 + drivers/platform/arm64/Kconfig | 12 + drivers/platform/arm64/Makefile | 1 + drivers/platform/arm64/qcom-hamoa-ec.c | 468 +++++++++++++++++++++ 8 files changed, 599 insertions(+) --- base-commit: a0ae2a256046c0c5d3778d1a194ff2e171f16e5f change-id: 20260309-v04-add-driver-for-ec-3fa478f264d9 Best regards, -- Anvesh Jain P