From patchwork Thu Jul 28 15:41:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: thermal-bot for Lad Prabhakar X-Patchwork-Id: 594268 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 6D032C19F29 for ; Thu, 28 Jul 2022 15:41:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231166AbiG1Plm (ORCPT ); Thu, 28 Jul 2022 11:41:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54404 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229998AbiG1Pll (ORCPT ); Thu, 28 Jul 2022 11:41:41 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D7D78675B7 for ; Thu, 28 Jul 2022 08:41:40 -0700 (PDT) Date: Thu, 28 Jul 2022 15:41:38 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1659022899; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ZHLsE+dmKR2lC02P9Rp0F5nRIXPpN/DovuEV64zRjWM=; b=scAxiktTFZVREs5JBZnc/1d4GBRFQXSEMfmvPJpMoYR639y46jbpPUOoaNONSULync1F0/ cygUrwt/zZSoD/6YgDgKqX9UAqo/r5sXr3Vu3x/CllmTwJEq5qaedmvCZfeC01dVEAdXZX x5Dp+4tpgrVXRZPIvPb9yJfMmKloBGB/A78/bonGT6kzeyVtY6BUSvqnc3eNWU7WVS7AUr B7llAfnXxHlP8Bgu1MSn80BDK0CC333ImOdnn1sY51FkB4eefHpXP6yWFXiA5GJJzCGMdR /oPVFlPHI0FeEmlEJI378OGzD1U64zXidSSQVSmoGhUvh1TerHROhOWcU1uyjw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1659022899; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ZHLsE+dmKR2lC02P9Rp0F5nRIXPpN/DovuEV64zRjWM=; b=cLt9zKSVtXxG0nC2cKf47w8yhIzowoo2Thxpqc+RPdZkQzu4FewbmKwLqN2RUi83PYcKHq 6NopQpn5nZBoJmBA== From: "thermal-bot for Daniel Lezcano" Sender: tip-bot2@linutronix.de Reply-to: linux-pm@vger.kernel.org To: linux-pm@vger.kernel.org Subject: [thermal: thermal/next] thermal/of: Replace device node match with device node search Cc: Alexandre Bailon , Kevin Hilman , Daniel Lezcano , Daniel Lezcano , rui.zhang@intel.com, amitk@kernel.org In-Reply-To: <20220722200007.1839356-3-daniel.lezcano@linexp.org> References: <20220722200007.1839356-3-daniel.lezcano@linexp.org> MIME-Version: 1.0 Message-ID: <165902289827.15455.1490577087618999353.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org The following commit has been merged into the thermal/next branch of thermal: Commit-ID: a3193edcbdf9a8ae73b6e1f2da96e920582c1849 Gitweb: https://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux.git//a3193edcbdf9a8ae73b6e1f2da96e920582c1849 Author: Daniel Lezcano AuthorDate: Fri, 22 Jul 2022 21:59:59 +02:00 Committer: Daniel Lezcano CommitterDate: Thu, 28 Jul 2022 17:29:53 +02:00 thermal/of: Replace device node match with device node search The thermal_of code builds a trip array associated with the node pointer in order to compare the trip point phandle with the list. The thermal trip is a thermal zone property and should be moved there. If some sensors have hardcoded trip points, they should use the exported structure instead of redefining again and again their own structure and data to describe exactly the same things. In order to move this to the thermal.h header and allow more cleanup, we need to remove the node pointer from the structure. Instead of building storing the device node, we search directly in the device tree the corresponding node. That results in a simplification of the code and allows to move the structure to thermal.h Cc: Alexandre Bailon Cc: Kevin Hilman Signed-off-by: Daniel Lezcano Link: https://lore.kernel.org/r/20220722200007.1839356-3-daniel.lezcano@linexp.org Signed-off-by: Daniel Lezcano --- drivers/thermal/thermal_of.c | 64 ++++++++++++++++++++++++----------- 1 file changed, 44 insertions(+), 20 deletions(-) diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c index b65d435..9295bc5 100644 --- a/drivers/thermal/thermal_of.c +++ b/drivers/thermal/thermal_of.c @@ -671,6 +671,35 @@ EXPORT_SYMBOL_GPL(devm_thermal_zone_of_sensor_unregister); /*** functions parsing device tree nodes ***/ +static int of_find_trip_id(struct device_node *np, struct device_node *trip) +{ + struct device_node *trips; + struct device_node *t; + int i = 0; + + trips = of_get_child_by_name(np, "trips"); + if (!trips) { + pr_err("Failed to find 'trips' node\n"); + return -EINVAL; + } + + /* + * Find the trip id point associated with the cooling device map + */ + for_each_child_of_node(trips, t) { + + if (t == trip) + goto out; + i++; + } + + i = -ENXIO; +out: + of_node_put(trips); + + return i; +} + /** * thermal_of_populate_bind_params - parse and fill cooling map data * @np: DT node containing a cooling-map node @@ -686,14 +715,13 @@ EXPORT_SYMBOL_GPL(devm_thermal_zone_of_sensor_unregister); * Return: 0 on success, proper error code otherwise */ static int thermal_of_populate_bind_params(struct device_node *np, - struct __thermal_bind_params *__tbp, - struct thermal_trip *trips, - int ntrips) + struct __thermal_bind_params *__tbp) { struct of_phandle_args cooling_spec; struct __thermal_cooling_bind_param *__tcbp; struct device_node *trip; int ret, i, count; + int trip_id; u32 prop; /* Default weight. Usage is optional */ @@ -708,18 +736,14 @@ static int thermal_of_populate_bind_params(struct device_node *np, return -ENODEV; } - /* match using device_node */ - for (i = 0; i < ntrips; i++) - if (trip == trips[i].np) { - __tbp->trip_id = i; - break; - } - - if (i == ntrips) { - ret = -ENODEV; + trip_id = of_find_trip_id(np, trip); + if (trip_id < 0) { + ret = trip_id; goto end; } + __tbp->trip_id = trip_id; + count = of_count_phandle_with_args(np, "cooling-device", "#cooling-cells"); if (count <= 0) { @@ -868,6 +892,7 @@ static struct __thermal_zone __init *thermal_of_build_thermal_zone(struct device_node *np) { struct device_node *child = NULL, *gchild; + struct device_node *trips; struct __thermal_zone *tz; int ret, i; u32 prop, coef[2]; @@ -910,13 +935,13 @@ __init *thermal_of_build_thermal_zone(struct device_node *np) } /* trips */ - child = of_get_child_by_name(np, "trips"); + trips = of_get_child_by_name(np, "trips"); /* No trips provided */ - if (!child) + if (!trips) goto finish; - tz->ntrips = of_get_child_count(child); + tz->ntrips = of_get_child_count(trips); if (tz->ntrips == 0) /* must have at least one child */ goto finish; @@ -927,14 +952,12 @@ __init *thermal_of_build_thermal_zone(struct device_node *np) } i = 0; - for_each_child_of_node(child, gchild) { + for_each_child_of_node(trips, gchild) { ret = thermal_of_populate_trip(gchild, &tz->trips[i++]); if (ret) goto free_trips; } - of_node_put(child); - /* cooling-maps */ child = of_get_child_by_name(np, "cooling-maps"); @@ -954,13 +977,13 @@ __init *thermal_of_build_thermal_zone(struct device_node *np) i = 0; for_each_child_of_node(child, gchild) { - ret = thermal_of_populate_bind_params(gchild, &tz->tbps[i++], - tz->trips, tz->ntrips); + ret = thermal_of_populate_bind_params(gchild, &tz->tbps[i++]); if (ret) goto free_tbps; } finish: + of_node_put(trips); of_node_put(child); return tz; @@ -981,6 +1004,7 @@ free_trips: for (i = 0; i < tz->ntrips; i++) of_node_put(tz->trips[i].np); kfree(tz->trips); + of_node_put(trips); of_node_put(gchild); free_tz: kfree(tz);