From patchwork Thu Jan 27 20:01:10 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Boyd X-Patchwork-Id: 537148 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A7450C433F5 for ; Thu, 27 Jan 2022 20:02:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240198AbiA0UCA (ORCPT ); Thu, 27 Jan 2022 15:02:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43158 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343641AbiA0UB7 (ORCPT ); Thu, 27 Jan 2022 15:01:59 -0500 Received: from mail-pj1-x102f.google.com (mail-pj1-x102f.google.com [IPv6:2607:f8b0:4864:20::102f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9EB0DC06173B for ; Thu, 27 Jan 2022 12:01:59 -0800 (PST) Received: by mail-pj1-x102f.google.com with SMTP id d15-20020a17090a110f00b001b4e7d27474so4145346pja.2 for ; Thu, 27 Jan 2022 12:01:59 -0800 (PST) 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=mnLXiJbCUaC6XTZzeAM0x5jkp+ZwTQGnS1QkwL8Pb08=; b=lWqllZqrDcVmSKuLBzM5NetfRm+wmp9lMVdzziEYwXfKf4DloUdfa+Hdk0K+m5nRv5 08JmDvKm12bU1zd+uSV5KyJxyXHDBz0ytGNa5+M+uSId9nA4tL0CF53rTjg3W9Pgts8F CKDmILXBrnN/1i89gLb87AXvEofiPkb6aj2jo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=mnLXiJbCUaC6XTZzeAM0x5jkp+ZwTQGnS1QkwL8Pb08=; b=KF5rH0+Ii6KsIv2sqO7htRgQf1TSvv0Wp9xsGgFd9I2hDcof4xOiBiWTopZfQxzD2+ c+6AIFbmatx9zc3NJeHf3VKH1OjsUKJ6wnx6f99CvBQ15ZKaP/oPcnJzUaXu9J11SjJV dx3cAT6DWc0x3YSELyCBcNDRKqHCiUSrtlbSHCqUXBfHshvsfZ+Vf+oT3RH3pbBPpkcU 2KnwW3JYJQBLkw+xQgGzdJWjORtXAEQ9VgqMWcODDxcJoweeKopCNItFOdyEAN3481wz OP4tCvwl1hlxfXmlmorrM3jr7sJTJI9E9vvZjfscb7roABcocva3PEJ5ZtkO1jAQPNGF Dxzw== X-Gm-Message-State: AOAM530z6RhHQdk34792OtdGfihC47N7iuXq/NbLuIUy3Y35fpi3qEt2 sJwco5ncPUIbXgBWbHZhPy3eGw== X-Google-Smtp-Source: ABdhPJwELBm2hJJkKCHCGDWi0uz0RH9y0pifltZnK5CSGFtfaIxRrrrZ6UAYfSEjLNlhVwuFfkr4HQ== X-Received: by 2002:a17:90b:3b46:: with SMTP id ot6mr9864097pjb.179.1643313719206; Thu, 27 Jan 2022 12:01:59 -0800 (PST) Received: from smtp.gmail.com ([2620:15c:202:201:9246:1838:3243:3071]) by smtp.gmail.com with ESMTPSA id k21sm6561190pff.33.2022.01.27.12.01.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Jan 2022 12:01:58 -0800 (PST) From: Stephen Boyd To: Greg Kroah-Hartman , Douglas Anderson Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, Daniel Vetter , Daniel Vetter , Laurent Pinchart , "Rafael J. Wysocki" , Rob Clark , Russell King , Saravana Kannan Subject: [PATCH v6 04/35] component: Add {bind,unbind}_component() ops that take aggregate device Date: Thu, 27 Jan 2022 12:01:10 -0800 Message-Id: <20220127200141.1295328-5-swboyd@chromium.org> X-Mailer: git-send-email 2.35.0.rc0.227.g00780c9af4-goog In-Reply-To: <20220127200141.1295328-1-swboyd@chromium.org> References: <20220127200141.1295328-1-swboyd@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org We'd like to get more device model features in the component framework so let's pass the struct aggregate_device pointer instead of the parent device pointer to the component binding functions. This will allow drivers to inspect and control things related to the aggregate device in case they need it, and they'll always be able to get back to the device they were using before by using the 'parent' member of the aggregate device struct. Suggested-by: Daniel Vetter Cc: Daniel Vetter Cc: Greg Kroah-Hartman Cc: Laurent Pinchart Cc: "Rafael J. Wysocki" Cc: Rob Clark Cc: Russell King Cc: Saravana Kannan Signed-off-by: Stephen Boyd --- drivers/base/component.c | 14 +++++++++++--- include/linux/component.h | 23 ++++++++++++++++++++++- 2 files changed, 33 insertions(+), 4 deletions(-) diff --git a/drivers/base/component.c b/drivers/base/component.c index 13ac2004a913..5b91a114786d 100644 --- a/drivers/base/component.c +++ b/drivers/base/component.c @@ -735,8 +735,13 @@ static void component_unbind(struct component *component, { WARN_ON(!component->bound); - if (component->ops && component->ops->unbind) - component->ops->unbind(component->dev, adev->parent, data); + if (component->ops) { + if (component->ops->unbind) + component->ops->unbind(component->dev, adev->parent, data); + else if (component->ops->unbind_component) + component->ops->unbind_component(component->dev, adev, data); + } + component->bound = false; /* Release all resources claimed in the binding of this component */ @@ -801,7 +806,10 @@ static int component_bind(struct component *component, struct aggregate_device * dev_dbg(adev->parent, "binding %s (ops %ps)\n", dev_name(component->dev), component->ops); - ret = component->ops->bind(component->dev, adev->parent, data); + if (component->ops->bind_component) + ret = component->ops->bind_component(component->dev, adev, data); + else + ret = component->ops->bind(component->dev, adev->parent, data); if (!ret) { component->bound = true; diff --git a/include/linux/component.h b/include/linux/component.h index c39dea7824af..073cbe9fea32 100644 --- a/include/linux/component.h +++ b/include/linux/component.h @@ -6,6 +6,7 @@ #include #include +struct aggregate_device; struct device; /** @@ -20,18 +21,39 @@ struct component_ops { * * Called through component_bind_all() when the aggregate driver is * ready to bind the overall driver. + * + * Deprecated: Use bind_component() instead. */ int (*bind)(struct device *comp, struct device *master, void *master_data); + /** + * @bind_component: + * + * Called through component_bind_all() when the aggregate driver is + * ready to bind the overall driver. + */ + int (*bind_component)(struct device *comp, struct aggregate_device *adev, + void *aggregate_data); /** * @unbind: * * Called through component_unbind_all() when the aggregate driver is * ready to bind the overall driver, or when component_bind_all() fails * part-ways through and needs to unbind some already bound components. + * + * Deprecated: Use unbind_component() instead. */ void (*unbind)(struct device *comp, struct device *master, void *master_data); + /** + * @unbind_component: + * + * Called through component_unbind_all() when the aggregate driver is + * ready to unbind the overall driver, or when component_bind_all() fails + * part-ways through and needs to unbind some already bound components. + */ + int (*unbind_component)(struct device *comp, struct aggregate_device *adev, + void *aggregate_data); }; int component_add(struct device *, const struct component_ops *); @@ -42,7 +64,6 @@ void component_del(struct device *, const struct component_ops *); int component_bind_all(struct device *parent, void *data); void component_unbind_all(struct device *parent, void *data); -struct aggregate_device; struct device *aggregate_device_parent(const struct aggregate_device *adev); /**