From patchwork Mon Jan 23 15:27:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Lezcano X-Patchwork-Id: 645892 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 49380C05027 for ; Mon, 23 Jan 2023 15:28:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232192AbjAWP2V (ORCPT ); Mon, 23 Jan 2023 10:28:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34234 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232095AbjAWP2U (ORCPT ); Mon, 23 Jan 2023 10:28:20 -0500 Received: from mail-wm1-x332.google.com (mail-wm1-x332.google.com [IPv6:2a00:1450:4864:20::332]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7ADDD20047 for ; Mon, 23 Jan 2023 07:28:18 -0800 (PST) Received: by mail-wm1-x332.google.com with SMTP id fl11-20020a05600c0b8b00b003daf72fc844so10901767wmb.0 for ; Mon, 23 Jan 2023 07:28:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=OIWV5/U3aD1TS48D9ejtlC9TCaF31IO7b6c4b9EuDIo=; b=olV4vJ064212iGgO5jY7yyTvCfRLgc3Q515NIOQqAVJlywstBPrpDpKx9JF5R5CM6l WqDXjoSTyewV2vMJDur1Rk5xUTdRqx1sW7kR0Qadtln5Boyyc0N1Kzy5gKiXud3Rc/T0 R0pVpjCQjjNuoFzom8pnoFVzFnbG5BfuJmJNHPLxqbmd0LRJq1FiB4TWJDxlPElzifVj ELLDg5WS+0zzl+RvJsgtUa0fSbDJ0Lokw6ymExUBgftIQvvMMKxOUXUu8bWXi/ZYybH2 VOcM/kxTkEJvsaYeQCcGMgws6g6nesnLEcOtGWdOMiiCFfIRU7ax6gPx+4SgbvSSr430 H3Dg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=OIWV5/U3aD1TS48D9ejtlC9TCaF31IO7b6c4b9EuDIo=; b=YRbBM97iLQrRmVdq2MCsXZHJ9XjutdgEIBg2PfHyIsGbLTQD1AkGj8RhYX6BuL4lTn f1UhRYDLP1K4N4wDPn6QTzJYq1kpdJWjrcDZuhZyGGRcqENGbrtnSoCWt4whXgK5agth Um2Y5s7ykPahTc/ARYsqXRuRXtn7bJ05mmFxICcUVA7p4I6OwDIHlThN6yNM0M+RheXx jsN/cw1ktcovhp3Xshcl/HJivdxUSFOikvxykBmjzpzNSlRq69f3kHE1dQhL78JstaId 7lM0TnSpgIbj/Bx5CvIFmm7bugS1CeITzO67WLKW6H7UKL74sgPMatIBEGgMllENRyEB /MvQ== X-Gm-Message-State: AFqh2kq61wP+i/pLGlHl7T40OzmILaoKPKmM8+IXvGtOLC/pZUH+rYPm fdcFdlnvtptNAr5dLvWHsgHAtQ== X-Google-Smtp-Source: AMrXdXsCbZ6Bl05Xw2rjXfpabLcjeZXHey9Oo5slLXr3qjVDcYirWUVTSjFRzfyhf2obUDSF0lZqVA== X-Received: by 2002:a05:600c:2255:b0:3da:f950:8168 with SMTP id a21-20020a05600c225500b003daf9508168mr23235744wmm.35.1674487696977; Mon, 23 Jan 2023 07:28:16 -0800 (PST) Received: from mai.. (146725694.box.freepro.com. [130.180.211.218]) by smtp.gmail.com with ESMTPSA id t13-20020a1c770d000000b003db1ca20170sm10673096wmi.37.2023.01.23.07.28.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Jan 2023 07:28:16 -0800 (PST) From: Daniel Lezcano To: daniel.lezcano@linaro.org, rui.zhang@intel.com, rafael@kernel.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Amit Kucheria Subject: [PATCH v2 1/3] thermal/core: Fix unregistering netlink at thermal init time Date: Mon, 23 Jan 2023 16:27:54 +0100 Message-Id: <20230123152756.4031574-2-daniel.lezcano@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230123152756.4031574-1-daniel.lezcano@linaro.org> References: <20230123152756.4031574-1-daniel.lezcano@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org The thermal subsystem initialization miss an netlink unregistering function in the error. Add it. Signed-off-by: Daniel Lezcano Reviewed-by: Zhang Rui --- drivers/thermal/thermal_core.c | 4 +++- drivers/thermal/thermal_netlink.c | 5 +++++ drivers/thermal/thermal_netlink.h | 3 +++ 3 files changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index d9a3d9566d73..fddafcee5e6f 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -1606,7 +1606,7 @@ static int __init thermal_init(void) result = thermal_register_governors(); if (result) - goto error; + goto unregister_netlink; result = class_register(&thermal_class); if (result) @@ -1621,6 +1621,8 @@ static int __init thermal_init(void) unregister_governors: thermal_unregister_governors(); +unregister_netlink: + thermal_netlink_exit(); error: ida_destroy(&thermal_tz_ida); ida_destroy(&thermal_cdev_ida); diff --git a/drivers/thermal/thermal_netlink.c b/drivers/thermal/thermal_netlink.c index 75943b06dbe7..08bc46c3ec7b 100644 --- a/drivers/thermal/thermal_netlink.c +++ b/drivers/thermal/thermal_netlink.c @@ -699,3 +699,8 @@ int __init thermal_netlink_init(void) { return genl_register_family(&thermal_gnl_family); } + +void __init thermal_netlink_exit(void) +{ + genl_unregister_family(&thermal_gnl_family); +} diff --git a/drivers/thermal/thermal_netlink.h b/drivers/thermal/thermal_netlink.h index 1052f523188d..0a9987c3bc57 100644 --- a/drivers/thermal/thermal_netlink.h +++ b/drivers/thermal/thermal_netlink.h @@ -13,6 +13,7 @@ struct thermal_genl_cpu_caps { /* Netlink notification function */ #ifdef CONFIG_THERMAL_NETLINK int __init thermal_netlink_init(void); +void __init thermal_netlink_exit(void); int thermal_notify_tz_create(int tz_id, const char *name); int thermal_notify_tz_delete(int tz_id); int thermal_notify_tz_enable(int tz_id); @@ -115,4 +116,6 @@ static inline int thermal_genl_cpu_capability_event(int count, struct thermal_ge return 0; } +static inline void __init thermal_netlink_exit(void) {} + #endif /* CONFIG_THERMAL_NETLINK */ From patchwork Mon Jan 23 15:27:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Lezcano X-Patchwork-Id: 646459 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 0CD5DC54EB4 for ; Mon, 23 Jan 2023 15:28:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232209AbjAWP2X (ORCPT ); Mon, 23 Jan 2023 10:28:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34300 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232227AbjAWP2V (ORCPT ); Mon, 23 Jan 2023 10:28:21 -0500 Received: from mail-wm1-x32a.google.com (mail-wm1-x32a.google.com [IPv6:2a00:1450:4864:20::32a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A9CE01A483 for ; Mon, 23 Jan 2023 07:28:19 -0800 (PST) Received: by mail-wm1-x32a.google.com with SMTP id f19-20020a1c6a13000000b003db0ef4dedcso10869005wmc.4 for ; Mon, 23 Jan 2023 07:28:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=hCSbK/tUS4YMZH0NcLQxGFkztwrDFcL8VnBPGZktFY8=; b=uyaRiBmICBscn5Hvad+35Hy9+6kvUZMcyuWmCN6ldtS0KNu7c9HY0LDYJ1AwewYgDM kb1h3iTr1di9kumeJgH/g/EPDztoTRFe1XSTlaVGtE2RJPmYA44NTD9n7wMpjq9YDi1Z in66J8z9Iyik0qM/+Om942KRYa9f51CJCwvtgz70+lSy1iLyjriGJ1JtYcub70DLj+eg 7ocU9iGyG7B6EaBa/T08NMVjCJbY1D3xRgceevr58wqeALKg5DC6vNoE7OTT4M3R+fGF kimqAwIxO8upbHfOXwxyy7Y7lr1OOONEItI/YFZiZH67Jr9flZoDYyTbQRhkO5x4hs60 464g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=hCSbK/tUS4YMZH0NcLQxGFkztwrDFcL8VnBPGZktFY8=; b=tcREZBQiZx1j+sNKmwyvliKzI4yRNUKM+6mmB+zD070rp0wXm/uoB70w+Ao9OW7570 /ca16BQ3T0dMmV3A61KM2AYpR3T+/2OY01m3vACTtAXccw4ynKjWIrX4mQAyreWVV0+I SYTcqpo7r5pAvUqBAf+TCY1zjwNkwJJzeqKYHJMNSGJ9ZW8GsYheOvlCWBuuL3xUd/B7 aJUa4oGUF5qnaNiYnkao+4UvtULgxGl2iKfEQugM6nMoRTkx5UL0yTVvFwdhbRoD5yfc ttjJSe56KqnGXGbUu+pqwc0tm9VSKdCKRffhEvca7Z4vIHOHh7QGJowL/KtehqIV1AOX jjRQ== X-Gm-Message-State: AFqh2korNoR+CUr5TQ+xvlXGkOmC73uuHp8YqlHc4LqZZrv8PgmyucVB rLjye3jMnH4ohDn2mGcawllSnxlGPEbY2BVy X-Google-Smtp-Source: AMrXdXvwGIAq3D7pbn5/Gf5ZWWv5J71Ul+DVWq6kr4bpvl7s/tCVcYw/R9t45Yt6u13NEhgoTrNkSw== X-Received: by 2002:a05:600c:510d:b0:3da:f719:50cd with SMTP id o13-20020a05600c510d00b003daf71950cdmr23287652wms.18.1674487697983; Mon, 23 Jan 2023 07:28:17 -0800 (PST) Received: from mai.. (146725694.box.freepro.com. [130.180.211.218]) by smtp.gmail.com with ESMTPSA id t13-20020a1c770d000000b003db1ca20170sm10673096wmi.37.2023.01.23.07.28.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Jan 2023 07:28:17 -0800 (PST) From: Daniel Lezcano To: daniel.lezcano@linaro.org, rui.zhang@intel.com, rafael@kernel.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Amit Kucheria Subject: [PATCH v2 2/3] thermal/core: Remove unneeded ida_destroy() Date: Mon, 23 Jan 2023 16:27:55 +0100 Message-Id: <20230123152756.4031574-3-daniel.lezcano@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230123152756.4031574-1-daniel.lezcano@linaro.org> References: <20230123152756.4031574-1-daniel.lezcano@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org As per documentation for the ida_destroy() function: "If the IDA is already empty, there is no need to call this function." The thermal framework is in the init sequence, so the ida was not yet used and consequently it is empty in case of error. There is no need to call ida_destroy(), let's remove the calls. Signed-off-by: Daniel Lezcano Reviewed-by: Zhang Rui --- drivers/thermal/thermal_core.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index fddafcee5e6f..fad0c4a07d16 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -1624,8 +1624,6 @@ static int __init thermal_init(void) unregister_netlink: thermal_netlink_exit(); error: - ida_destroy(&thermal_tz_ida); - ida_destroy(&thermal_cdev_ida); mutex_destroy(&thermal_list_lock); mutex_destroy(&thermal_governor_lock); return result; From patchwork Mon Jan 23 15:27:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Lezcano X-Patchwork-Id: 645891 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 7D91AC38142 for ; Mon, 23 Jan 2023 15:28:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232310AbjAWP2f (ORCPT ); Mon, 23 Jan 2023 10:28:35 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34750 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232424AbjAWP2b (ORCPT ); Mon, 23 Jan 2023 10:28:31 -0500 Received: from mail-wm1-x335.google.com (mail-wm1-x335.google.com [IPv6:2a00:1450:4864:20::335]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F149026862 for ; Mon, 23 Jan 2023 07:28:21 -0800 (PST) Received: by mail-wm1-x335.google.com with SMTP id l41-20020a05600c1d2900b003daf986faaeso8848245wms.3 for ; Mon, 23 Jan 2023 07:28:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=PODENPNbVWjL8xQyhgyl+t+P0w0tYfl3GahnpsmHGfc=; b=rBe6MWIuBU4PCPosy8wmdLnAW+6r7YikSJA5xpfDvJzaopUx7GneUOOzFqT9WpC6Zm w6bQKEy7zRI/udwTUnkYPw96lYwXM8Pf67jtjjPSHaMNoboQrVuixb/HaIUgkhL8QFk4 7ZV4G2vh/5vzA2V6zwW7i/DItMiUA0UTkitFGhS8OxDvjgKob8yyTgPHmy6/WY8bpLuN mJzSVPvjqSreJ3jsdELvRgK+jG+6nJ483IsVpGRBUo0fvukuT07KQVenLCJAOuPb2RDk adjSfKfbqAYL/frRh3KkHsAkKTDll2XM0Q98sMey6w6wYQWfWtTBOVowWDup4NozKtoA 1cnA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=PODENPNbVWjL8xQyhgyl+t+P0w0tYfl3GahnpsmHGfc=; b=Oi6ur5izgYjIJHhCHGaDSH6CQeV6yqh9os1aCCl+/Bq2X8mXT13WDrq7myuw+Wynf6 NkLUk5ZD81KIOchf1RKQ4QCBQTXXnRsbIpjwyeJv8HDcbR+0w7kZrdCczg8tqsjZhp0P 3IABjfpvG1orPCxC2UrG3dif8ecuLVVOkq2Ib8BJYP95DY6FgMBuMRSfZ0DpxYavYIMS mr76wVZMCnBW+Uc8pdJOObsdkyPjqEqz+ZujJC93L4eOq2Rn2sBV9MOZOZAx5fk45v1w ZcVeEPRzhTyIR/tnM9M5UVsUh/C4atENfUFeLUu3LMvF3EiTmQdDu1gzAkQQVJuMiUZY oLQg== X-Gm-Message-State: AFqh2kqUz9tWFyKvK8Ng1gsx6kvZF6xdYHfOUVYCOEfbCfIKOOjgFmjs KCRJGqvriGW+sRVANwidtDBvXw== X-Google-Smtp-Source: AMrXdXvGnLNGRLSFXB24uuBDMTzuXupdOxNjf55X9XoW+9vcUkTl81sFYVSEBG8lSDLiEJR7iG3gsg== X-Received: by 2002:a05:600c:1c01:b0:3c6:e63e:23e9 with SMTP id j1-20020a05600c1c0100b003c6e63e23e9mr24804179wms.24.1674487700334; Mon, 23 Jan 2023 07:28:20 -0800 (PST) Received: from mai.. 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[130.180.211.218]) by smtp.gmail.com with ESMTPSA id t13-20020a1c770d000000b003db1ca20170sm10673096wmi.37.2023.01.23.07.28.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Jan 2023 07:28:19 -0800 (PST) From: Daniel Lezcano To: daniel.lezcano@linaro.org, rui.zhang@intel.com, rafael@kernel.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Amit Kucheria Subject: [PATCH v2 3/3] thermal/core: Move the thermal trip code to a dedicated file Date: Mon, 23 Jan 2023 16:27:56 +0100 Message-Id: <20230123152756.4031574-4-daniel.lezcano@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230123152756.4031574-1-daniel.lezcano@linaro.org> References: <20230123152756.4031574-1-daniel.lezcano@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org The thermal_core.c files contains a lot of functions handling different thermal components like the governors, the trip points, the cooling device, the OF cooling device, etc ... This organization does not help to migrate to a more sane code where there is a better self-encapsulation as all the components' internals can be directly accessed from a single file. For the sake of clarity, let's move the thermal trip points code in a dedicated thermal_trip.c file and add a function to browse all the trip points like we do with the thermal zones, the govenors and the cooling devices. The same can be done for the cooling devices and the governor code but that will come later as the current work in the thermal framework is to fix the trip point handling and use a generic trip point structure. No functional changes intended. Signed-off-by: Daniel Lezcano Reviewed-by: Zhang Rui --- drivers/thermal/Makefile | 4 +- drivers/thermal/thermal_core.c | 87 -------------- drivers/thermal/thermal_core.h | 4 + drivers/thermal/thermal_helpers.c | 62 ---------- drivers/thermal/thermal_trip.c | 182 ++++++++++++++++++++++++++++++ 5 files changed, 188 insertions(+), 151 deletions(-) create mode 100644 drivers/thermal/thermal_trip.c diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index 2506c6c8ca83..2faf4651f34a 100644 --- a/drivers/thermal/Makefile +++ b/drivers/thermal/Makefile @@ -4,8 +4,8 @@ # obj-$(CONFIG_THERMAL) += thermal_sys.o -thermal_sys-y += thermal_core.o thermal_sysfs.o \ - thermal_helpers.o +thermal_sys-y += thermal_core.o thermal_sysfs.o +thermal_sys-y += thermal_trip.o thermal_helpers.o # netlink interface to manage the thermal framework thermal_sys-$(CONFIG_THERMAL_NETLINK) += thermal_netlink.o diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index fad0c4a07d16..4ee685043a3e 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -1155,12 +1155,6 @@ static void thermal_set_delay_jiffies(unsigned long *delay_jiffies, int delay_ms *delay_jiffies = round_jiffies(*delay_jiffies); } -int thermal_zone_get_num_trips(struct thermal_zone_device *tz) -{ - return tz->num_trips; -} -EXPORT_SYMBOL_GPL(thermal_zone_get_num_trips); - int thermal_zone_get_crit_temp(struct thermal_zone_device *tz, int *temp) { int i, ret = -EINVAL; @@ -1187,87 +1181,6 @@ int thermal_zone_get_crit_temp(struct thermal_zone_device *tz, int *temp) } EXPORT_SYMBOL_GPL(thermal_zone_get_crit_temp); -int __thermal_zone_get_trip(struct thermal_zone_device *tz, int trip_id, - struct thermal_trip *trip) -{ - int ret; - - if (!tz || trip_id < 0 || trip_id >= tz->num_trips || !trip) - return -EINVAL; - - if (tz->trips) { - *trip = tz->trips[trip_id]; - return 0; - } - - if (tz->ops->get_trip_hyst) { - ret = tz->ops->get_trip_hyst(tz, trip_id, &trip->hysteresis); - if (ret) - return ret; - } else { - trip->hysteresis = 0; - } - - ret = tz->ops->get_trip_temp(tz, trip_id, &trip->temperature); - if (ret) - return ret; - - return tz->ops->get_trip_type(tz, trip_id, &trip->type); -} -EXPORT_SYMBOL_GPL(__thermal_zone_get_trip); - -int thermal_zone_get_trip(struct thermal_zone_device *tz, int trip_id, - struct thermal_trip *trip) -{ - int ret; - - mutex_lock(&tz->lock); - ret = __thermal_zone_get_trip(tz, trip_id, trip); - mutex_unlock(&tz->lock); - - return ret; -} -EXPORT_SYMBOL_GPL(thermal_zone_get_trip); - -int thermal_zone_set_trip(struct thermal_zone_device *tz, int trip_id, - const struct thermal_trip *trip) -{ - struct thermal_trip t; - int ret; - - if (!tz->ops->set_trip_temp && !tz->ops->set_trip_hyst && !tz->trips) - return -EINVAL; - - ret = __thermal_zone_get_trip(tz, trip_id, &t); - if (ret) - return ret; - - if (t.type != trip->type) - return -EINVAL; - - if (t.temperature != trip->temperature && tz->ops->set_trip_temp) { - ret = tz->ops->set_trip_temp(tz, trip_id, trip->temperature); - if (ret) - return ret; - } - - if (t.hysteresis != trip->hysteresis && tz->ops->set_trip_hyst) { - ret = tz->ops->set_trip_hyst(tz, trip_id, trip->hysteresis); - if (ret) - return ret; - } - - if (tz->trips && (t.temperature != trip->temperature || t.hysteresis != trip->hysteresis)) - tz->trips[trip_id] = *trip; - - thermal_notify_tz_trip_change(tz->id, trip_id, trip->type, - trip->temperature, trip->hysteresis); - - __thermal_zone_device_update(tz, THERMAL_TRIP_CHANGED); - - return 0; -} - /** * thermal_zone_device_register_with_trips() - register a new thermal zone device * @type: the thermal zone device type diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h index 26350206a98d..7af54382e915 100644 --- a/drivers/thermal/thermal_core.h +++ b/drivers/thermal/thermal_core.h @@ -52,6 +52,10 @@ int for_each_thermal_cooling_device(int (*cb)(struct thermal_cooling_device *, int for_each_thermal_governor(int (*cb)(struct thermal_governor *, void *), void *thermal_governor); +int __for_each_thermal_trip(struct thermal_zone_device *, + int (*cb)(struct thermal_trip *, void *), + void *); + struct thermal_zone_device *thermal_zone_get_by_id(int id); struct thermal_attr { diff --git a/drivers/thermal/thermal_helpers.c b/drivers/thermal/thermal_helpers.c index 8977d5ddc23c..0f648131b0b5 100644 --- a/drivers/thermal/thermal_helpers.c +++ b/drivers/thermal/thermal_helpers.c @@ -146,68 +146,6 @@ int thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp) } EXPORT_SYMBOL_GPL(thermal_zone_get_temp); -/** - * __thermal_zone_set_trips - Computes the next trip points for the driver - * @tz: a pointer to a thermal zone device structure - * - * The function computes the next temperature boundaries by browsing - * the trip points. The result is the closer low and high trip points - * to the current temperature. These values are passed to the backend - * driver to let it set its own notification mechanism (usually an - * interrupt). - * - * This function must be called with tz->lock held. Both tz and tz->ops - * must be valid pointers. - * - * It does not return a value - */ -void __thermal_zone_set_trips(struct thermal_zone_device *tz) -{ - struct thermal_trip trip; - int low = -INT_MAX, high = INT_MAX; - int i, ret; - - lockdep_assert_held(&tz->lock); - - if (!tz->ops->set_trips) - return; - - for (i = 0; i < tz->num_trips; i++) { - int trip_low; - - ret = __thermal_zone_get_trip(tz, i , &trip); - if (ret) - return; - - trip_low = trip.temperature - trip.hysteresis; - - if (trip_low < tz->temperature && trip_low > low) - low = trip_low; - - if (trip.temperature > tz->temperature && - trip.temperature < high) - high = trip.temperature; - } - - /* No need to change trip points */ - if (tz->prev_low_trip == low && tz->prev_high_trip == high) - return; - - tz->prev_low_trip = low; - tz->prev_high_trip = high; - - dev_dbg(&tz->device, - "new temperature boundaries: %d < x < %d\n", low, high); - - /* - * Set a temperature window. When this window is left the driver - * must inform the thermal core via thermal_zone_device_update. - */ - ret = tz->ops->set_trips(tz, low, high); - if (ret) - dev_err(&tz->device, "Failed to set trips: %d\n", ret); -} - static void thermal_cdev_set_cur_state(struct thermal_cooling_device *cdev, int target) { diff --git a/drivers/thermal/thermal_trip.c b/drivers/thermal/thermal_trip.c new file mode 100644 index 000000000000..5ce71f1cb1ba --- /dev/null +++ b/drivers/thermal/thermal_trip.c @@ -0,0 +1,182 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2008 Intel Corp + * Copyright (C) 2008 Zhang Rui + * Copyright (C) 2008 Sujith Thomas + * Copyright 2022 Linaro Limited + * + * Thermal trips handling + */ +#include "thermal_core.h" + +int __for_each_thermal_trip(struct thermal_zone_device *tz, + int (*cb)(struct thermal_trip *, void *), + void *data) +{ + int i, ret; + struct thermal_trip trip; + + lockdep_assert_held(&tz->lock); + + for (i = 0; i < tz->num_trips; i++) { + + ret = __thermal_zone_get_trip(tz, i, &trip); + if (ret) + return ret; + + ret = cb(&trip, data); + if (ret) + return ret; + } + + return 0; +} + +int thermal_zone_get_num_trips(struct thermal_zone_device *tz) +{ + return tz->num_trips; +} +EXPORT_SYMBOL_GPL(thermal_zone_get_num_trips); + +/** + * __thermal_zone_set_trips - Computes the next trip points for the driver + * @tz: a pointer to a thermal zone device structure + * + * The function computes the next temperature boundaries by browsing + * the trip points. The result is the closer low and high trip points + * to the current temperature. These values are passed to the backend + * driver to let it set its own notification mechanism (usually an + * interrupt). + * + * This function must be called with tz->lock held. Both tz and tz->ops + * must be valid pointers. + * + * It does not return a value + */ +void __thermal_zone_set_trips(struct thermal_zone_device *tz) +{ + struct thermal_trip trip; + int low = -INT_MAX, high = INT_MAX; + int i, ret; + + lockdep_assert_held(&tz->lock); + + if (!tz->ops->set_trips) + return; + + for (i = 0; i < tz->num_trips; i++) { + int trip_low; + + ret = __thermal_zone_get_trip(tz, i , &trip); + if (ret) + return; + + trip_low = trip.temperature - trip.hysteresis; + + if (trip_low < tz->temperature && trip_low > low) + low = trip_low; + + if (trip.temperature > tz->temperature && + trip.temperature < high) + high = trip.temperature; + } + + /* No need to change trip points */ + if (tz->prev_low_trip == low && tz->prev_high_trip == high) + return; + + tz->prev_low_trip = low; + tz->prev_high_trip = high; + + dev_dbg(&tz->device, + "new temperature boundaries: %d < x < %d\n", low, high); + + /* + * Set a temperature window. When this window is left the driver + * must inform the thermal core via thermal_zone_device_update. + */ + ret = tz->ops->set_trips(tz, low, high); + if (ret) + dev_err(&tz->device, "Failed to set trips: %d\n", ret); +} + +int __thermal_zone_get_trip(struct thermal_zone_device *tz, int trip_id, + struct thermal_trip *trip) +{ + int ret; + + if (!tz || trip_id < 0 || trip_id >= tz->num_trips || !trip) + return -EINVAL; + + if (tz->trips) { + *trip = tz->trips[trip_id]; + return 0; + } + + if (tz->ops->get_trip_hyst) { + ret = tz->ops->get_trip_hyst(tz, trip_id, &trip->hysteresis); + if (ret) + return ret; + } else { + trip->hysteresis = 0; + } + + ret = tz->ops->get_trip_temp(tz, trip_id, &trip->temperature); + if (ret) + return ret; + + return tz->ops->get_trip_type(tz, trip_id, &trip->type); +} +EXPORT_SYMBOL_GPL(__thermal_zone_get_trip); + +int thermal_zone_get_trip(struct thermal_zone_device *tz, int trip_id, + struct thermal_trip *trip) +{ + int ret; + + mutex_lock(&tz->lock); + ret = __thermal_zone_get_trip(tz, trip_id, trip); + mutex_unlock(&tz->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(thermal_zone_get_trip); + +int thermal_zone_set_trip(struct thermal_zone_device *tz, int trip_id, + const struct thermal_trip *trip) +{ + struct thermal_trip t; + int ret; + + if (!tz->ops->set_trip_temp && !tz->ops->set_trip_hyst && !tz->trips) + return -EINVAL; + + ret = __thermal_zone_get_trip(tz, trip_id, &t); + if (ret) + return ret; + + if (t.type != trip->type) + return -EINVAL; + + if (t.temperature != trip->temperature && tz->ops->set_trip_temp) { + ret = tz->ops->set_trip_temp(tz, trip_id, trip->temperature); + if (ret) + return ret; + } + + if (t.hysteresis != trip->hysteresis && tz->ops->set_trip_hyst) { + ret = tz->ops->set_trip_hyst(tz, trip_id, trip->hysteresis); + if (ret) + return ret; + } + + if (tz->trips && (t.temperature != trip->temperature || t.hysteresis != trip->hysteresis)) + tz->trips[trip_id] = *trip; + + thermal_notify_tz_trip_change(tz->id, trip_id, trip->type, + trip->temperature, trip->hysteresis); + + __thermal_zone_device_update(tz, THERMAL_TRIP_CHANGED); + + return 0; +}