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 X-Spam-Level: X-Spam-Status: No, score=-13.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 38EF8C433E6 for ; Mon, 20 Jul 2020 05:49:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 177DB20758 for ; Mon, 20 Jul 2020 05:49:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="oVaibWsv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726830AbgGTFtg (ORCPT ); Mon, 20 Jul 2020 01:49:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60104 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725805AbgGTFtc (ORCPT ); Mon, 20 Jul 2020 01:49:32 -0400 Received: from mail-pj1-x1044.google.com (mail-pj1-x1044.google.com [IPv6:2607:f8b0:4864:20::1044]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9E60EC0619D2; Sun, 19 Jul 2020 22:49:32 -0700 (PDT) Received: by mail-pj1-x1044.google.com with SMTP id k71so9641783pje.0; Sun, 19 Jul 2020 22:49:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=v31UIEz3Dwtg5YacEjDmu57JbCXcygtQk9X1DgLN9BA=; b=oVaibWsvo3nonV2lk4d4pRxGOY2MYqlXEbFCWmJ8P6y7HB6gVjXnRa82S/w2bAwwlw 6xnYc08dAFTXXjEhsVzc61b9cSygrkNhgPWc4YXRqz9bLRINcA9MNNEwWrH5D4/oTuBf GzgGK5FzZKjkJxN5NhuRVznqh3HiEhYr3Ov8ZF5ZF0KhYWQ/R6FuysCbdb8JOx30ImbV NJENbWA9aOUnenPzNf9DtNOHINUqGqZZi8RDPyYkTPPyRSZBsrGQ9X+4n3i81cXvp7Ff 4rYkMzD0XYvPzO8WyJhtcDJLxqoicA1AILI56IM0doy30NUZfjbOh2Bpuz9HCZ2kPSyi /wog== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=v31UIEz3Dwtg5YacEjDmu57JbCXcygtQk9X1DgLN9BA=; b=dEjMsW8oLKOxl6tZjQQ84IqUqOMpk4FPcVUXCzrn1fUXtNb4aeaZKT+a5PnhV0ASdg PF6IhLraSxcJIZ7aIekyIsybKGC2J1ndhi0GEzEo+IfHYu8wyQP2vWXpw35E8k+nBQKn OGcKEePUNtyJ4GwbRlameshN9y5R4bRp1ejJRlf2ye8m4PRtUqUJH/ydvCMMGPEFd5bY ncll1GdnGl+0n11Qsldf3c5uruRHNbll/QnG9JWPgeC4k7RAmF6ciTddaDcXrLQE+u2b zdGib+Y5vGw4oEpWe+UBMLs+Vt7A5RdKK+JJLVUfQhweCjDSJQNeU//AmbOhZadrw9mD XCEw== X-Gm-Message-State: AOAM532D7aPDxi4/JFMBCUdHeBKYYSXyZi53JIidpAdte49L5u7+1QKx FF4hZvTQoUb5IAaFSY9aElm27sV9ypx/NInb X-Google-Smtp-Source: ABdhPJzyh8irwIIyglKexcc0oB262gZmwo6vp7dJCN36UjtdxBKneKgaM2b6ecnGcvKmtywb2dlfsA== X-Received: by 2002:a17:90a:ac06:: with SMTP id o6mr14541288pjq.219.1595224172197; Sun, 19 Jul 2020 22:49:32 -0700 (PDT) Received: from xiaomi.mioffice.cn ([209.9.72.214]) by smtp.gmail.com with ESMTPSA id i7sm13627833pgh.58.2020.07.19.22.49.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 19 Jul 2020 22:49:31 -0700 (PDT) From: Qiwu Huang To: sre@kernel.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org, jiangfei1@xiaomi.com, Qiwu Huang Subject: [PATCH v4 3/4] power: supply: core: add wireless signal strength property Date: Mon, 20 Jul 2020 13:47:16 +0800 Message-Id: X-Mailer: git-send-email 2.27.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Qiwu Huang reports wireless signal strength. The value show degree of coupling between tx and rx. Signed-off-by: Qiwu Huang --- Documentation/ABI/testing/sysfs-class-power | 10 ++++++++++ drivers/power/supply/power_supply_sysfs.c | 1 + include/linux/power_supply.h | 1 + 3 files changed, 12 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power index 03ab449fae8a..75ec7de2fe78 100644 --- a/Documentation/ABI/testing/sysfs-class-power +++ b/Documentation/ABI/testing/sysfs-class-power @@ -757,3 +757,13 @@ Description: 13: ADAPTER_VOICE_BOX, 14: ADAPTER_PRIVATE_PD_50W. +What: /sys/class/power_supply//signal_strength +Date: Jul 2020 +Contact: Fei Jiang +Description: + In PING phase, RX transmits a signal strength packet as the first + communication packet to instruct the base to keep power signal on. + The value reports wireless signal strength and show degree of coupling. + + Access: Read-Only + Valid values: 0 - 100 diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c index f2458e21d02b..e420a453095e 100644 --- a/drivers/power/supply/power_supply_sysfs.c +++ b/drivers/power/supply/power_supply_sysfs.c @@ -208,6 +208,7 @@ static struct power_supply_attr power_supply_attrs[] = { POWER_SUPPLY_ATTR(SERIAL_NUMBER), POWER_SUPPLY_ATTR(QUICK_CHARGE_TYPE), POWER_SUPPLY_ATTR(TX_ADAPTER), + POWER_SUPPLY_ATTR(SIGNAL_STRENGTH), }; static struct attribute * diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 0bbdec1630a4..346c6c9c0737 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -169,6 +169,7 @@ enum power_supply_property { POWER_SUPPLY_PROP_SERIAL_NUMBER, POWER_SUPPLY_PROP_QUICK_CHARGE_TYPE, POWER_SUPPLY_PROP_TX_ADAPTER, + POWER_SUPPLY_PROP_SIGNAL_STRENGTH, }; enum power_supply_type { -- 2.27.0