From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5BEA0C43217 for ; Mon, 18 Oct 2021 15:17:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 482BE60F22 for ; Mon, 18 Oct 2021 15:17:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232594AbhJRPTJ (ORCPT ); Mon, 18 Oct 2021 11:19:09 -0400 Received: from mga02.intel.com ([134.134.136.20]:64667 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232259AbhJRPTI (ORCPT ); Mon, 18 Oct 2021 11:19:08 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10141"; a="215435696" X-IronPort-AV: E=Sophos;i="5.85,382,1624345200"; d="scan'208";a="215435696" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Oct 2021 08:14:56 -0700 X-IronPort-AV: E=Sophos;i="5.85,382,1624345200"; d="scan'208";a="566102854" Received: from paasikivi.fi.intel.com ([10.237.72.42]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Oct 2021 08:14:53 -0700 Received: from punajuuri.localdomain (punajuuri.localdomain [192.168.240.130]) by paasikivi.fi.intel.com (Postfix) with ESMTP id 7A3EA2047E; Mon, 18 Oct 2021 15:17:33 +0300 (EEST) Received: from sailus by punajuuri.localdomain with local (Exim 4.94.2) (envelope-from ) id 1mcRa5-0001fS-G2; Mon, 18 Oct 2021 15:17:29 +0300 From: Sakari Ailus To: linux-i2c@vger.kernel.org Cc: Wolfram Sang , "Rafael J. Wysocki" , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , rajmohan.mani@intel.com, Tomasz Figa , Bartosz Golaszewski , Bingbu Cao , Chiranjeevi Rapolu , Hyungwoo Yang , linux-media@vger.kernel.org Subject: [PATCH 1/6] ACPI: scan: Obtain device's desired enumeration power state Date: Mon, 18 Oct 2021 15:17:24 +0300 Message-Id: <20211018121729.6357-2-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211018121729.6357-1-sakari.ailus@linux.intel.com> References: <20211018121729.6357-1-sakari.ailus@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Store a device's desired enumeration power state in struct acpi_device_power during acpi_device object's initialisation. Signed-off-by: Sakari Ailus --- drivers/acpi/scan.c | 4 ++++ include/acpi/acpi_bus.h | 1 + 2 files changed, 5 insertions(+) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index dce2c291b982b..a50f1967c73dc 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1017,6 +1017,7 @@ static void acpi_bus_init_power_state(struct acpi_device *device, int state) static void acpi_bus_get_power_flags(struct acpi_device *device) { + unsigned long long dsc = ACPI_STATE_D0; u32 i; /* Presence of _PS0|_PR0 indicates 'power manageable' */ @@ -1038,6 +1039,9 @@ static void acpi_bus_get_power_flags(struct acpi_device *device) if (acpi_has_method(device->handle, "_DSW")) device->power.flags.dsw_present = 1; + acpi_evaluate_integer(device->handle, "_DSC", NULL, &dsc); + device->power.state_for_enumeration = dsc; + /* * Enumerate supported power management states */ diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 53b6e9f9de7b4..6b4eb5742869a 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -278,6 +278,7 @@ struct acpi_device_power { int state; /* Current state */ struct acpi_device_power_flags flags; struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */ + u8 state_for_enumeration; /* Maximum power state for enumeration */ }; struct acpi_dep_data { -- 2.30.2