From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from fanzine2.igalia.com (fanzine2.igalia.com [213.97.179.56]) (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 BD8EC4AA00F; Wed, 14 Oct 2026 20:44:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.97.179.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792010674; cv=none; b=aDD2pyqsIQeQROwJpsdzAp8s0vDHZSd/2kklBTz5ByquFd7zF1DtFJonWC+Reihr0Ts+Ybi/5nQTEl6RPWDSb7OmH4mf/aPTAhAtu6mveDS45/YSSExw7l8LLibPQ3qPAlMq9gFh4D21H1qDfxA/AqP7/gsP9o1alE+MXWK2M/c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792010674; c=relaxed/simple; bh=MSeI6VMsOH4y+l3Xwrz5SdB+0WLtLBqUW/w/cWtLYlg=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=aUwmjEGDRZtBiNk4Z24mUBDJvRCqElKsGlsTQ1CcT1731/BRCRJ8qF/CL+4P6T4WJH9/Yt6MoVqPFQYpzPJtXyX4mfgQKkP1vYvWa4nKQmKNIJQRj1+U7nZ0g9rLsq/TVqpmaEs0RB2w6sOzksyKJn8juIWA6eUUz9OyixRDrgs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=igalia.com; spf=pass smtp.mailfrom=igalia.com; dkim=pass (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b=WGbVzuy0; arc=none smtp.client-ip=213.97.179.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=igalia.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=igalia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b="WGbVzuy0" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject: Cc:To:From:From:Reply-To; bh=hiLfNJO7d4xLlo97mYwFH+Jb3RrWBPZPMof4xFhX9Yc=; b= WGbVzuy0RXVvolt9G7Yhm4lRwANxVe/k0PM7WDwhL4gYjl28R6h3AEQIqfw5SUbrub68SbbuveOj6 qnUioxvMjTVo/kMDtzFWZGFEF6JOO9FIHoKf5Cl5KTEmWvyxDziXfoUjKl7RLmz9HFOpvltFHNGPN BVNeaLG6ai5PCHUrWsVbq+u7UcPIws5B7T1t+9o4g04Nxy9YJ5+IYNwgAqZZquPObjfC+Y+7dVX0r d3XUpgA2qvOXzc/ksmBRr2mszJq1mK0VYwRiAyhMgJQEtzt+aFvcrdkyQTftHWhurMbfCABgzMCmG u9y9eb8by1414CMMZrAHkw28ju/AcGc+6g==; Received: from ip-86-49-238-151.bb.vodafone.cz ([86.49.238.151] helo=uajain) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1xH5pq-000Dyf-AF; Wed, 14 Oct 2026 22:44:26 +0200 From: Umang Jain To: "Rafael J . Wysocki" , Len Brown Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-dev@igalia.com, Umang Jain Subject: [PATCH v3 0/2] acpi: battery: Query BCT method for steamdeck Date: Wed, 14 Oct 2026 22:45:56 +0200 Message-ID: <20261014204558.466130-1-uajain@igalia.com> X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Short series to query Battery charge time ("_BCT") from ACPI tables for steamdeck devices. Patch 1/2 introduces the steamdeck device battery quirk. Patch 2/2 handles the case where steamdeck devices can report "Charging" even when low power PSU is connected which is discharging the device. Changes in v3: - Only query BCT method for the steamdeck quirk - Drop charge_time member from battery object - check for returned value from acpi_evaluate_integer for max ACPI_UINT32_MAX bounds as per the spec Changes in v2: - comment improvements - split off BCT method handling into separate patch - https://lore.kernel.org/all/20260923082932.1049270-1-uajain@igalia.com/ v1: https://lore.kernel.org/all/20260918135628.2322188-1-uajain@igalia.com/ Umang Jain (2): acpi: battery: Introduce Valve steamdeck devices quirk acpi: battery: Read Battery charge time for Steamdeck devices drivers/acpi/battery.c | 45 +++++++++++++++++++++++++++++++++++++++++- 1 file changed, 44 insertions(+), 1 deletion(-) -- 2.55.0