From patchwork Tue Apr 23 13:28:20 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 10912983 X-Patchwork-Delegate: viresh.linux@gmail.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F33DB1390 for ; Tue, 23 Apr 2019 13:29:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E3DFB28733 for ; Tue, 23 Apr 2019 13:29:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D810228880; Tue, 23 Apr 2019 13:29:00 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 65B5228733 for ; Tue, 23 Apr 2019 13:29:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727959AbfDWN2f (ORCPT ); Tue, 23 Apr 2019 09:28:35 -0400 Received: from mail-lj1-f196.google.com ([209.85.208.196]:45146 "EHLO mail-lj1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727864AbfDWN2d (ORCPT ); Tue, 23 Apr 2019 09:28:33 -0400 Received: by mail-lj1-f196.google.com with SMTP id y6so13483316ljd.12 for ; Tue, 23 Apr 2019 06:28:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=TmzrLG0HhMUllGPErHueXstJu/wyUlmgrIkCuicVsiY=; b=pjyiAvWpRnfInL1U8vVm5G28PPwIa7vHVRINhbLFwD7Hh8RLqG1XBvcg6uhiz5Q7I/ oDN/v1CW3tmWtHRBfdLsTUhN3j1Ez8EdsbehRXTSLKgBkdXvWs6FxQ/neadA2MdMxyCv /T86u/ZwKidHvmiwKNAiXKqlT6ADVxSxocN6dT4P477jUUBupKtT35G3+nr8vkHzgvWd +6GveAO2cO7rhe58ZHp0+Kgisl4ilC3MIdSjLoHz7+E1PvM3J4aYUIFnfv5nb5ygA7N5 5dlcgCZuU9fe0qw3ewVCgh0ZKTnuzxJOcl7hkfXbZa6WVywG4g0j32gsnzFs0ERahaVm My7g== 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=TmzrLG0HhMUllGPErHueXstJu/wyUlmgrIkCuicVsiY=; b=MsdsKJISdukJKvRuiYJzftOZ0VTpNXDYIrefBpThtEvnlT+whSFQ6paDxYspvGmL9F 3bAdhm8mYdLR4t7WhrlTI5/kkAVPTOb+FjUzCiUnoZGPod0hXTGWN3xqGu7cpciyRirp /sYsKalr54M8wXlyVOpw7DH7oYj8bjn3yHEJz+KZ5MzO2ce+dRJ3Bh1/Ha0f1bX51lfL aU8OtVR+HshScle/KvjzUTlaEhO4IXm30gAu7IW2F3Yq8eChGIyxFm7LUlmxKFtURrjY XxbfQt/oZypjV98VgDbiadBVJPb4eIMiturnUCzLlBl9Q2cvRV3wH4eHyP16wQJQ7NKg qIGQ== X-Gm-Message-State: APjAAAXNRrsOAB5YyxD3thInNr1oZ1Cy7SZTI8He7nfGa+IfvWJ1bZb7 2WaBG2VsZ7EnMQzD+iY88ksIQQ== X-Google-Smtp-Source: APXvYqxYn5AHIWe8NubgPi748hbhffjSbR78lCUgeNHQmIJgIs0nNxYDkCygfXs7mEYHaYNwQVCsrQ== X-Received: by 2002:a2e:500d:: with SMTP id e13mr13748245ljb.169.1556026110607; Tue, 23 Apr 2019 06:28:30 -0700 (PDT) Received: from localhost.localdomain ([212.45.67.2]) by smtp.googlemail.com with ESMTPSA id y206sm4617107lfc.72.2019.04.23.06.28.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 23 Apr 2019 06:28:29 -0700 (PDT) From: Georgi Djakov To: vireshk@kernel.org, sboyd@kernel.org, nm@ti.com, robh+dt@kernel.org, mark.rutland@arm.com, rjw@rjwysocki.net Cc: jcrouse@codeaurora.org, vincent.guittot@linaro.org, bjorn.andersson@linaro.org, amit.kucheria@linaro.org, seansw@qti.qualcomm.com, daidavid1@codeaurora.org, evgreen@chromium.org, sibis@codeaurora.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, georgi.djakov@linaro.org Subject: [PATCH v2 2/5] interconnect: Add of_icc_get_by_index() helper function Date: Tue, 23 Apr 2019 16:28:20 +0300 Message-Id: <20190423132823.7915-3-georgi.djakov@linaro.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190423132823.7915-1-georgi.djakov@linaro.org> References: <20190423132823.7915-1-georgi.djakov@linaro.org> MIME-Version: 1.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This is the same as the traditional of_icc_get() function, but the difference is that it takes index as an argument, instead of name. Signed-off-by: Georgi Djakov --- drivers/interconnect/core.c | 45 ++++++++++++++++++++++++++++-------- include/linux/interconnect.h | 6 +++++ 2 files changed, 41 insertions(+), 10 deletions(-) diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c index 871eb4bc4efc..a7c3c262c974 100644 --- a/drivers/interconnect/core.c +++ b/drivers/interconnect/core.c @@ -295,9 +295,9 @@ static struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec) } /** - * of_icc_get() - get a path handle from a DT node based on name + * of_icc_get_by_index() - get a path handle from a DT node based on index * @dev: device pointer for the consumer device - * @name: interconnect path name + * @idx: interconnect path index * * This function will search for a path between two endpoints and return an * icc_path handle on success. Use icc_put() to release constraints when they @@ -309,13 +309,12 @@ static struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec) * Return: icc_path pointer on success or ERR_PTR() on error. NULL is returned * when the API is disabled or the "interconnects" DT property is missing. */ -struct icc_path *of_icc_get(struct device *dev, const char *name) +struct icc_path *of_icc_get_by_index(struct device *dev, int idx) { struct icc_path *path = ERR_PTR(-EPROBE_DEFER); struct icc_node *src_node, *dst_node; struct device_node *np = NULL; struct of_phandle_args src_args, dst_args; - int idx = 0; int ret; if (!dev || !dev->of_node) @@ -335,12 +334,6 @@ struct icc_path *of_icc_get(struct device *dev, const char *name) * lets support only global ids and extend this in the future if needed * without breaking DT compatibility. */ - if (name) { - idx = of_property_match_string(np, "interconnect-names", name); - if (idx < 0) - return ERR_PTR(idx); - } - ret = of_parse_phandle_with_args(np, "interconnects", "#interconnect-cells", idx * 2, &src_args); @@ -383,6 +376,38 @@ struct icc_path *of_icc_get(struct device *dev, const char *name) return path; } + +/** + * of_icc_get() - get a path handle from a DT node based on name + * @dev: device pointer for the consumer device + * @name: interconnect path name + * + * This function will search for a path between two endpoints and return an + * icc_path handle on success. Use icc_put() to release constraints when they + * are not needed anymore. + * If the interconnect API is disabled, NULL is returned and the consumer + * drivers will still build. Drivers are free to handle this specifically, + * but they don't have to. + * + * Return: icc_path pointer on success or ERR_PTR() on error. NULL is returned + * when the API is disabled or the "interconnects" DT property is missing. + */ +struct icc_path *of_icc_get(struct device *dev, const char *name) +{ + int idx = 0; + + if (!dev || !dev->of_node) + return ERR_PTR(-ENODEV); + + if (name) { + idx = of_property_match_string(dev->of_node, + "interconnect-names", name); + if (idx < 0) + return ERR_PTR(idx); + } + + return of_icc_get_by_index(dev, idx); +} EXPORT_SYMBOL_GPL(of_icc_get); /** diff --git a/include/linux/interconnect.h b/include/linux/interconnect.h index dc25864755ba..0e430b3b6519 100644 --- a/include/linux/interconnect.h +++ b/include/linux/interconnect.h @@ -28,6 +28,7 @@ struct device; struct icc_path *icc_get(struct device *dev, const int src_id, const int dst_id); struct icc_path *of_icc_get(struct device *dev, const char *name); +struct icc_path *of_icc_get_by_index(struct device *dev, int idx); void icc_put(struct icc_path *path); int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw); @@ -45,6 +46,11 @@ static inline struct icc_path *of_icc_get(struct device *dev, return NULL; } +struct icc_path *of_icc_get_by_index(struct device *dev, int idx) +{ + return NULL; +} + static inline void icc_put(struct icc_path *path) { }