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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 6741AC4338F for ; Wed, 4 Aug 2021 11:04:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 50D3761040 for ; Wed, 4 Aug 2021 11:04:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237850AbhHDLE1 (ORCPT ); Wed, 4 Aug 2021 07:04:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36000 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237768AbhHDLES (ORCPT ); Wed, 4 Aug 2021 07:04:18 -0400 Received: from mail-pj1-x1031.google.com (mail-pj1-x1031.google.com [IPv6:2607:f8b0:4864:20::1031]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6B774C06179A; Wed, 4 Aug 2021 04:04:05 -0700 (PDT) Received: by mail-pj1-x1031.google.com with SMTP id dw2-20020a17090b0942b0290177cb475142so8145398pjb.2; Wed, 04 Aug 2021 04:04:05 -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 :in-reply-to:references; bh=v5VrqkSgwcCOdp//iZ1+g23cZqbac3VU++EnpM9xUWo=; b=bdXX9UkIiNxdKTu55zA79ScTv3KBbwcD60BGbO4c5FTbCJ1yXmeRL1sSOnODMrwqaw vdyOiaiJCDCoMgCYNT7mXaZpc5q72wNVYtonp57/R26n+HmH4IcjusYJCVd6r+91TivH IQ33hOSA9VULtDS263o3siUjaxr6+Am9PfEJOj3/mjqS2yIZAoedii2nYh4L6X8l367G 8Q18zSV+ydnp5gbWmSSAIaLG7/iwXhzi1/t9zoAKDSdWMY00RaVw+OM99lFcaOldOLGt Vs69FL+d3q+AOQcGPloMFormCzeR3wknSXQ1UlrE7+Bqk2hKzzqudFAG/fRkXOQq81K9 oQ4w== 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:in-reply-to:references; bh=v5VrqkSgwcCOdp//iZ1+g23cZqbac3VU++EnpM9xUWo=; b=EsgNY7j1O7be+qahMqJpABLT/F58rDIQlG/x7U+JP/LKB989VUxtN173OESkKmAEf2 x9zhrClWAx7riAbnAdjPLLc7yf/Ik2/Vhwh7jJS0b41BlqLO8mY3iyBE4w+F8WGGb8Q7 n9FwAaUWjJI9YBztRakGZM7HWwbCg1Ju7/d37TeupoJFqBtFSQ3oAvh7JjFDWP5Fnv5l OiSsfOwO3Dzg6sBRrjgwL8hQ6DdrWK96kGbi3l2iuPlbURUO77eq5JL/jridPAGOJzVf MfYA5vgv+WAXiuhcaq9WkE6UbSOuXACcbOLMlrfPQR2QoBTMerqhaiWyhV4qVS6CGitH /VZQ== X-Gm-Message-State: AOAM532xcUV+py/OIsJi4aWrxHnydFgS71T9Plfcd6QpvqFfkvmlA0t2 Up18r5Wl6BeuAqd69HwDLxk= X-Google-Smtp-Source: ABdhPJyf17/KCD/KDGkCC5YNeZ6PbVZA6xobce3OQP6nVQoJYNnbhLAMnZfLWV90yBvJ+g5/SVnItQ== X-Received: by 2002:a17:90a:ccc:: with SMTP id 12mr27577608pjt.57.1628075045064; Wed, 04 Aug 2021 04:04:05 -0700 (PDT) Received: from wangting-OptiPlex-7050.mioffice.cn ([2408:8607:1b00:7:529a:4cff:fe0e:1dd3]) by smtp.gmail.com with ESMTPSA id f6sm2306220pfv.69.2021.08.04.04.04.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Aug 2021 04:04:04 -0700 (PDT) From: Ting Wang To: sre@kernel.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org, wangting11 Subject: [PATCH v11 3/4] power: supply: core: add wireless signal strength property Date: Wed, 4 Aug 2021 19:02:00 +0800 Message-Id: <8599adb4d1c966c8d0cd6e25137a660546c1115c.1627992564.git.wangting11@xiaomi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: wangting11 reports wireless signal strength. The value show degree of coupling between tx and rx. Signed-off-by: wangting11 --- Documentation/ABI/testing/sysfs-class-power | 22 +++++++++++++++++++++ drivers/power/supply/power_supply_sysfs.c | 1 + include/linux/power_supply.h | 1 + 3 files changed, 24 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power index 36808bf8731b..4a6b4970cb7d 100644 --- a/Documentation/ABI/testing/sysfs-class-power +++ b/Documentation/ABI/testing/sysfs-class-power @@ -785,3 +785,25 @@ 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. + + The Qi Wireless Power Transfer System is published by the + Wireless Power Consortium.The ping phase is the necessary stage + for matching transmitter and receiver. In this phase,the Power + Transmitter executes a Digital Ping, and listens for a response. + If the Power Transmitter discovers a Power Receiver, the Power + Transmitter may extend the Digital Ping,i.e. maintain the Power + Signal at the level of the Digital Ping. This causes the system + to proceed to the identification & configuration phase. If the + Power Transmitter does not extend the Digital Ping, the system + shall revert to the selection phase. + + 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 561cffef9d61..4de91dce2001 100644 --- a/drivers/power/supply/power_supply_sysfs.c +++ b/drivers/power/supply/power_supply_sysfs.c @@ -213,6 +213,7 @@ 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 bcfadf2a995f..0dfec19cb473 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -173,6 +173,7 @@ 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 { -- 2.17.1