From patchwork Thu Jul 23 13:09:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 11680969 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4F819618 for ; Thu, 23 Jul 2020 13:09:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3120D207BB for ; Thu, 23 Jul 2020 13:09:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="zbMoMN09" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728965AbgGWNJr (ORCPT ); Thu, 23 Jul 2020 09:09:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36918 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728914AbgGWNJq (ORCPT ); Thu, 23 Jul 2020 09:09:46 -0400 Received: from mail-wm1-x344.google.com (mail-wm1-x344.google.com [IPv6:2a00:1450:4864:20::344]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 26958C0619E3 for ; Thu, 23 Jul 2020 06:09:46 -0700 (PDT) Received: by mail-wm1-x344.google.com with SMTP id o2so5149090wmh.2 for ; Thu, 23 Jul 2020 06:09:46 -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=u+kCNiTjOgccPUFcK1QBTuSbaCk+Ae80CxJOPhO94oQ=; b=zbMoMN09R+vY0MKqBYUY4Ifemnd2nzZZvHl+95cXAe78RLLF2G2UppaXYhhvSLTQJg Hqr0gKmVIC1OcZJ72G4vVROqzIUMHMKJ2f1fTHRQAJ0cpXqL6WENgXfBqcMvmJYpKVoz O6KaabT7Ij0HmN6qUIw6K/Mb9rRtGkFjWlZ1FwVVFHrjo9z4Kl2a8B1yc06Bm/utwnKE VrvVigWXNWjauqL1agdbmmL+i53g3wgJAuGOn+ZPqH+691U5gFvpmUYPY9+eoSHXamhN QHwaqGGgzso2dLu0a/5Uz5JlUmcn+mlrToCre3bFOq7l1kFCvzoYFptU/eieNrRvNBsS inMQ== 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=u+kCNiTjOgccPUFcK1QBTuSbaCk+Ae80CxJOPhO94oQ=; b=Y5AEm9OY0FLnc0YdyMhiSBFOEw1Ao3jQGAfU2mKrd94AAU9sxhiTrbqdxCZ5LeM59a AmJS+nztT96IKAC1vdplrcAccT0PQXzG2RLutquk/+G6cGJu8nPM9n7rUPkMpzchqJhu ot2FylUUSEGSU99+UkhbWiPUNbyLp36P3y5OpTD2appBwW+sBFrNvbpwj/LjCvJHmgAN FurUVmSsJ1pfV1DjmOvIvM7mrpjiRt6WcGyrghuZRr9u/bkDFxEoaHlBB1bb4tSVl1aQ 8RGY9/ddRJQynn29rIiaimP2n6E4ImsIr5fFzqFayyA+UUNgZBmTeGA4xk1pb95F8NNs e+fA== X-Gm-Message-State: AOAM530UJi37/SnpdmeUG9LMXfXDSF2MzGr4W4Rgqup/1XZXQUHgixK6 TDESXlelZ06Gp54dOmmZeAIMg4Cak2U= X-Google-Smtp-Source: ABdhPJz4e0aJewPYy7uh/Xs3tFu1upX0paTP2HOAXmVWvLuRADqRHfPWlicum4l/jqi4R0EhZGqWKg== X-Received: by 2002:a1c:acc9:: with SMTP id v192mr3976604wme.164.1595509783572; Thu, 23 Jul 2020 06:09:43 -0700 (PDT) Received: from localhost.localdomain ([212.45.67.2]) by smtp.googlemail.com with ESMTPSA id w7sm3594632wmc.32.2020.07.23.06.09.42 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 23 Jul 2020 06:09:43 -0700 (PDT) From: Georgi Djakov To: linux-pm@vger.kernel.org, devicetree@vger.kernel.org Cc: bjorn.andersson@linaro.org, robh+dt@kernel.org, sibis@codeaurora.org, mka@chromium.org, dianders@chromium.org, georgi.djakov@linaro.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/6] interconnect: Introduce xlate_extended() callback Date: Thu, 23 Jul 2020 16:09:37 +0300 Message-Id: <20200723130942.28491-2-georgi.djakov@linaro.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200723130942.28491-1-georgi.djakov@linaro.org> References: <20200723130942.28491-1-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 Currently there is the xlate() callback, which is provider-specific is used for mapping the nodes from phandle arguments. This is fine for simple mappings, but the phandle arguments could contain an additional data, such as tag information. Let's create another callback xlate_extended() for the cases where providers want also populate the tagging data. Signed-off-by: Georgi Djakov Tested-by: Sibi Sankar Reviewed-by: Sibi Sankar Reviewed-by: Matthias Kaehlcke Tested-by: Matthias Kaehlcke --- drivers/interconnect/core.c | 73 ++++++++++++++++++--------- include/linux/interconnect-provider.h | 17 ++++++- 2 files changed, 65 insertions(+), 25 deletions(-) diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c index befd111049c0..6ccf55818e68 100644 --- a/drivers/interconnect/core.c +++ b/drivers/interconnect/core.c @@ -336,12 +336,13 @@ EXPORT_SYMBOL_GPL(of_icc_xlate_onecell); * Looks for interconnect provider under the node specified by @spec and if * found, uses xlate function of the provider to map phandle args to node. * - * Returns a valid pointer to struct icc_node on success or ERR_PTR() + * Returns a valid pointer to struct icc_node_data on success or ERR_PTR() * on failure. */ -struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec) +struct icc_node_data *of_icc_get_from_provider(struct of_phandle_args *spec) { struct icc_node *node = ERR_PTR(-EPROBE_DEFER); + struct icc_node_data *data = NULL; struct icc_provider *provider; if (!spec) @@ -349,14 +350,33 @@ struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec) mutex_lock(&icc_lock); list_for_each_entry(provider, &icc_providers, provider_list) { - if (provider->dev->of_node == spec->np) - node = provider->xlate(spec, provider->data); - if (!IS_ERR(node)) - break; + if (provider->dev->of_node == spec->np) { + if (provider->xlate_extended) { + data = provider->xlate_extended(spec, provider->data); + if (!IS_ERR(data)) { + node = data->node; + break; + } + } else { + node = provider->xlate(spec, provider->data); + if (!IS_ERR(node)) + break; + } + } } mutex_unlock(&icc_lock); - return node; + if (IS_ERR(node)) + return ERR_CAST(node); + + if (!data) { + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + return ERR_PTR(-ENOMEM); + data->node = node; + } + + return data; } EXPORT_SYMBOL_GPL(of_icc_get_from_provider); @@ -403,7 +423,7 @@ EXPORT_SYMBOL_GPL(devm_of_icc_get); struct icc_path *of_icc_get_by_index(struct device *dev, int idx) { struct icc_path *path; - struct icc_node *src_node, *dst_node; + struct icc_node_data *src_data, *dst_data; struct device_node *np; struct of_phandle_args src_args, dst_args; int ret; @@ -441,39 +461,46 @@ struct icc_path *of_icc_get_by_index(struct device *dev, int idx) of_node_put(dst_args.np); - src_node = of_icc_get_from_provider(&src_args); + src_data = of_icc_get_from_provider(&src_args); - if (IS_ERR(src_node)) { - if (PTR_ERR(src_node) != -EPROBE_DEFER) + if (IS_ERR(src_data)) { + if (PTR_ERR(src_data) != -EPROBE_DEFER) dev_err(dev, "error finding src node: %ld\n", - PTR_ERR(src_node)); - return ERR_CAST(src_node); + PTR_ERR(src_data)); + return ERR_CAST(src_data); } - dst_node = of_icc_get_from_provider(&dst_args); + dst_data = of_icc_get_from_provider(&dst_args); - if (IS_ERR(dst_node)) { - if (PTR_ERR(dst_node) != -EPROBE_DEFER) + if (IS_ERR(dst_data)) { + if (PTR_ERR(dst_data) != -EPROBE_DEFER) dev_err(dev, "error finding dst node: %ld\n", - PTR_ERR(dst_node)); - return ERR_CAST(dst_node); + PTR_ERR(dst_data)); + kfree(src_data); + return ERR_CAST(dst_data); } mutex_lock(&icc_lock); - path = path_find(dev, src_node, dst_node); + path = path_find(dev, src_data->node, dst_data->node); mutex_unlock(&icc_lock); if (IS_ERR(path)) { dev_err(dev, "%s: invalid path=%ld\n", __func__, PTR_ERR(path)); - return path; + goto free_icc_data; } + if (src_data->tag && src_data->tag == dst_data->tag) + icc_set_tag(path, src_data->tag); + path->name = kasprintf(GFP_KERNEL, "%s-%s", - src_node->name, dst_node->name); + src_data->node->name, dst_data->node->name); if (!path->name) { kfree(path); - return ERR_PTR(-ENOMEM); + path = ERR_PTR(-ENOMEM); } +free_icc_data: + kfree(src_data); + kfree(dst_data); return path; } EXPORT_SYMBOL_GPL(of_icc_get_by_index); @@ -975,7 +1002,7 @@ int icc_provider_add(struct icc_provider *provider) { if (WARN_ON(!provider->set)) return -EINVAL; - if (WARN_ON(!provider->xlate)) + if (WARN_ON(!provider->xlate && !provider->xlate_extended)) return -EINVAL; mutex_lock(&icc_lock); diff --git a/include/linux/interconnect-provider.h b/include/linux/interconnect-provider.h index 4735518de515..4d535fddd5d3 100644 --- a/include/linux/interconnect-provider.h +++ b/include/linux/interconnect-provider.h @@ -14,6 +14,17 @@ struct icc_node; struct of_phandle_args; +/** + * struct icc_node_data - icc node data + * + * @node: icc node + * @tag: tag + */ +struct icc_node_data { + struct icc_node *node; + u32 tag; +}; + /** * struct icc_onecell_data - driver data for onecell interconnect providers * @@ -39,6 +50,7 @@ struct icc_node *of_icc_xlate_onecell(struct of_phandle_args *spec, * @pre_aggregate: pointer to device specific function that is called * before the aggregation begins (optional) * @xlate: provider-specific callback for mapping nodes from phandle arguments + * @xlate_extended: vendor-specific callback for mapping node data from phandle arguments * @dev: the device this interconnect provider belongs to * @users: count of active users * @inter_set: whether inter-provider pairs will be configured with @set @@ -52,6 +64,7 @@ struct icc_provider { u32 peak_bw, u32 *agg_avg, u32 *agg_peak); void (*pre_aggregate)(struct icc_node *node); struct icc_node* (*xlate)(struct of_phandle_args *spec, void *data); + struct icc_node_data* (*xlate_extended)(struct of_phandle_args *spec, void *data); struct device *dev; int users; bool inter_set; @@ -105,7 +118,7 @@ void icc_node_del(struct icc_node *node); int icc_nodes_remove(struct icc_provider *provider); int icc_provider_add(struct icc_provider *provider); int icc_provider_del(struct icc_provider *provider); -struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec); +struct icc_node_data *of_icc_get_from_provider(struct of_phandle_args *spec); #else @@ -157,7 +170,7 @@ static inline int icc_provider_del(struct icc_provider *provider) return -ENOTSUPP; } -static inline struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec) +static inline struct icc_node_data *of_icc_get_from_provider(struct of_phandle_args *spec) { return ERR_PTR(-ENOTSUPP); }