From patchwork Thu Sep 2 21:35:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prashant Malani X-Patchwork-Id: 506167 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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, 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 835A7C433EF for ; Thu, 2 Sep 2021 21:36:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6B8776054E for ; Thu, 2 Sep 2021 21:36:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347424AbhIBVhW (ORCPT ); Thu, 2 Sep 2021 17:37:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35438 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347474AbhIBVhV (ORCPT ); Thu, 2 Sep 2021 17:37:21 -0400 Received: from mail-pg1-x533.google.com (mail-pg1-x533.google.com [IPv6:2607:f8b0:4864:20::533]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DEB5EC061757 for ; Thu, 2 Sep 2021 14:36:22 -0700 (PDT) Received: by mail-pg1-x533.google.com with SMTP id k24so3401534pgh.8 for ; Thu, 02 Sep 2021 14:36:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=8y6wF+XQ52afzGRquz6577KWZV/UU/rjnNku3tx/TIU=; b=kFc970RVraCTGWGhfGtzUtm6CShTtpLV6TYXR2MBGnvekHUyEEaaQSUT0tUYlYS+Nn uKCZcYkaK0K3mDCNttkgSUi38AOq4FCuXmk+6T4krnNlME6t+hcN8JH3b8HlBqeQ1SK1 KzwIWj6/LXmU76t7TWm7sqUfT+P6slzw4wZ0s= 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=8y6wF+XQ52afzGRquz6577KWZV/UU/rjnNku3tx/TIU=; b=m0zhuwc0waIEyCpFvVR6kjudeqf/83k9AiHKwMUQJQrboBmbazVbbtppp/GTf5I7sE TFfF2WIqozGJTU5Ekp1+SWUg2iusfQuzguAhRXpAvCfHLlYrKZUXwzzUwdf11WJIoXdi x9jLa3suAVpqoqQSQmxo9FC2FZG5wHmkCh6r2LSC6Gfn5szvD2lU4ddDk4HgrblzCvmw PdELHEMgqjon5u9dbvXqxiweonz97txbLYrp8duALfTZ/RSHMl1eXN9Hp0nA4KDFDmfn rRnvsO1/MhNkXNVN5Th5RQmTRV3JsT0eZgL9U8c+Qlouk83xMhWUgOZRWDBJfpgJwobJ bw9g== X-Gm-Message-State: AOAM530NNsz2Ma9fcg17qRB8qoS1ElSQWTaoEjYM7T1kYdy4u0f89Q2v aGHNfbyLQRsH4R5i1F3p/c54dA== X-Google-Smtp-Source: ABdhPJyYmRju1CuAw4JTzujNjj7+qmkPyWJVyeKPIhKs5FgBhCIzTZw+RvZ6xOVOlv942yLfLLnJKg== X-Received: by 2002:aa7:9250:0:b0:3f9:2b90:b34f with SMTP id 16-20020aa79250000000b003f92b90b34fmr237985pfp.7.1630618582491; Thu, 02 Sep 2021 14:36:22 -0700 (PDT) Received: from pmalani2.mtv.corp.google.com ([2620:15c:202:201:d082:352a:f346:411a]) by smtp.gmail.com with ESMTPSA id c68sm3167872pfc.150.2021.09.02.14.36.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 02 Sep 2021 14:36:22 -0700 (PDT) From: Prashant Malani To: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, linux-pm@vger.kernel.org, bleung@chromium.org, heikki.krogerus@linux.intel.com, badhri@google.com Cc: Prashant Malani , Greg Kroah-Hartman Subject: [RFC PATCH 3/3] usb: typec: Add partner power registration call Date: Thu, 2 Sep 2021 14:35:02 -0700 Message-Id: <20210902213500.3795948-4-pmalani@chromium.org> X-Mailer: git-send-email 2.33.0.153.gba50c8fa24-goog In-Reply-To: <20210902213500.3795948-1-pmalani@chromium.org> References: <20210902213500.3795948-1-pmalani@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Add a function to register a power supply device for a partner. Also, ensure that the registered power supply gets unregistered when the partner is removed. Signed-off-by: Prashant Malani --- drivers/usb/typec/class.c | 18 +++++++++++++++++- drivers/usb/typec/class.h | 2 ++ include/linux/usb/typec.h | 5 +++++ 3 files changed, 24 insertions(+), 1 deletion(-) diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index aeef453aa658..14a898440342 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -845,11 +845,27 @@ EXPORT_SYMBOL_GPL(typec_register_partner); */ void typec_unregister_partner(struct typec_partner *partner) { - if (!IS_ERR_OR_NULL(partner)) + if (!IS_ERR_OR_NULL(partner)) { + power_supply_unregister(partner->psy); device_unregister(&partner->dev); + } } EXPORT_SYMBOL_GPL(typec_unregister_partner); +int typec_partner_register_psy(struct typec_partner *partner, const struct power_supply_desc *desc, + const struct power_supply_config *cfg) +{ + partner->psy = power_supply_register(&partner->dev, desc, cfg); + if (IS_ERR(partner->psy)) { + dev_err(&partner->dev, "failed to register partner power supply (%ld)\n", + PTR_ERR(partner->psy)); + return PTR_ERR(partner->psy); + } + + return 0; +} +EXPORT_SYMBOL_GPL(typec_partner_register_psy); + /* ------------------------------------------------------------------------- */ /* Type-C Cable Plugs */ diff --git a/drivers/usb/typec/class.h b/drivers/usb/typec/class.h index aef03eb7e152..b75b0f22d982 100644 --- a/drivers/usb/typec/class.h +++ b/drivers/usb/typec/class.h @@ -4,6 +4,7 @@ #define __USB_TYPEC_CLASS__ #include +#include #include struct typec_mux; @@ -33,6 +34,7 @@ struct typec_partner { int num_altmodes; u16 pd_revision; /* 0300H = "3.0" */ enum usb_pd_svdm_ver svdm_version; + struct power_supply *psy; }; struct typec_port { diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h index e2e44bb1dad8..905527dab78c 100644 --- a/include/linux/usb/typec.h +++ b/include/linux/usb/typec.h @@ -22,6 +22,9 @@ struct typec_altmode_ops; struct fwnode_handle; struct device; +struct power_supply_desc; +struct power_supply_config; + enum typec_port_type { TYPEC_PORT_SRC, TYPEC_PORT_SNK, @@ -132,6 +135,8 @@ int typec_partner_set_num_altmodes(struct typec_partner *partner, int num_altmod struct typec_altmode *typec_partner_register_altmode(struct typec_partner *partner, const struct typec_altmode_desc *desc); +int typec_partner_register_psy(struct typec_partner *partner, const struct power_supply_desc *desc, + const struct power_supply_config *cfg); int typec_plug_set_num_altmodes(struct typec_plug *plug, int num_altmodes); struct typec_altmode *typec_plug_register_altmode(struct typec_plug *plug,