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Wed, 12 Mar 2025 21:48:04 -0700 (PDT) From: Sung-Chi Li Subject: [PATCH 0/3] Export the target RPM fan control by ChromeOS EC under hwmon Date: Thu, 13 Mar 2025 12:47:41 +0800 Message-Id: <20250313-extend_ec_hwmon_fan-v1-0-5c566776f2c4@chromium.org> Precedence: bulk X-Mailing-List: chrome-platform@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAG1j0mcC/x3MQQqAIBBA0avErBNKcVFXiZDJxppFU2iUEN09a fkW/z+QKDIl6KsHIl2ceJeCtq7ArygLKZ6LQTfaNqY1ivJJMjvybr23XVxAUWiD7RAn7ScDpTw iBc7/dRjf9wNxGYvyZQAAAA== X-Change-ID: 20250313-extend_ec_hwmon_fan-a5f59aab2cb3 To: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , Jean Delvare , Guenter Roeck , Benson Leung Cc: Guenter Roeck , chrome-platform@lists.linux.dev, linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, Sung-Chi Li X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1741841282; l=847; i=lschyi@chromium.org; s=20241113; h=from:subject:message-id; bh=Y0Td/sWdH+knvqeBCTi/FRD4AvDH3lbDPwadbtlNZfE=; b=6crJeFwDT8h8Rk+m2OeKexaNtQbX5DfEuIIILaDCnFdUl2qZRkUR2HWQEJBeTDc0KSkaDvwpF lcKNjE6CRHeBxUNV3+8QlRLnzLCaFg1kXTyCaoIVGAoUQQaXP69v0Lf X-Developer-Key: i=lschyi@chromium.org; a=ed25519; pk=nE3PJlqSK35GdWfB4oVLOwi4njfaUZRhM66HGos9P6o= ChromeOS embedded controller (EC) supports closed-loop fan control. We anticipate to have the fan related control from the kernel side, so this series register the HWMON_F_TARGET attribute, and implement the read and write function for setting/reading the target fan RPM from the EC side. Signed-off-by: Sung-Chi Li --- Sung-Chi Li (3): hwmon: (cros_ec) Add setting target fan RPM function hwmon: (cros_ec) Add reading target fan RPM function hwmon: (cros_ec) Register fan target attribute drivers/hwmon/cros_ec_hwmon.c | 69 +++++++++++++++++++++++++++++++++++++++---- 1 file changed, 64 insertions(+), 5 deletions(-) --- base-commit: 9fbcd7b32bf7c0a5bda0f22c25df29d00a872017 change-id: 20250313-extend_ec_hwmon_fan-a5f59aab2cb3 Best regards,