From patchwork Fri Feb 3 17:44:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Daniel Lezcano X-Patchwork-Id: 651007 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 454EFC05027 for ; Fri, 3 Feb 2023 17:45:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233664AbjBCRpL (ORCPT ); Fri, 3 Feb 2023 12:45:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48830 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233762AbjBCRoy (ORCPT ); Fri, 3 Feb 2023 12:44:54 -0500 Received: from mail-wr1-x431.google.com (mail-wr1-x431.google.com [IPv6:2a00:1450:4864:20::431]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CADB3AA271 for ; Fri, 3 Feb 2023 09:44:44 -0800 (PST) Received: by mail-wr1-x431.google.com with SMTP id r2so5324640wrv.7 for ; Fri, 03 Feb 2023 09:44:44 -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=nCvJ2+qCRMxXy+MMEVuUk39VFz7D4oUUKPSRDhGhsPo=; b=E+97ESBWZOs108fKz16uQQpPEsJKRiqUPP0jSzNIqq2u9M5Mk0tKU6xTnC5NHxtcwi gHULtHVX6ZfVxhLwVFQVi/sWxMjHBafJob7MeWEQkLdMj902laL9KYlVx3hmbx51LcRl kv9Y6cSIlzZehYQnz4+im37CY9TdjZOMlP4HyR8EYKT/EN4hx4IAjdHsXh91yEJymRUp s9ur1dvzz3AJ9b/4o9gVtSdcfX1ih8MbEHJnlw0dJYa8gwgaqm+iOew80uYvJ9XhQpCa XZA3qRfCdIjeth4ecTF4qe3KdjnIyozAqWx1C7zyLblD1kGUzumKG5xs0uJq9RHQQpsL zQxw== 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=nCvJ2+qCRMxXy+MMEVuUk39VFz7D4oUUKPSRDhGhsPo=; b=jnXKLMTsVQmnWlSY/SfPA6S6KNElf758ZwAmOisxxXxTqUjwv6iU60ETpi7q48QMDu mYSl3zs474ZScZgIbYmI50p1M0ITYiXVZ3Yh9l05JAjm7U5pRekb8asAWS+laejJcduK 0h9lovTOiFh4fzLCqz33B3eg/7jcsHAU5RhizNbWS407KmPcjtu9m83nxO83+U3bIb9/ a4gwODS4XVvq7/6o4oi/YmwD/OcchcMzSiO6iwleURqbZbqh00SJwaCJImsxSqKY9IJZ Fb/aKt+KX/k08gkxKGKozPRmXk15IPQ6VsT9HGZ5UCmsAk2d5KdO2/fKf8a/przV1Wy2 XoEg== X-Gm-Message-State: AO0yUKUNhIcBz1Ur6PD/5tmllc/QMN+njBjR6jcSIIXkzZkRqnswd6/X buPY4giC5gj5scNpZMAC4585J4kAo936WK2D X-Google-Smtp-Source: AK7set86jBlaWkJ8aG2B2neqMSmczNuDTPh3A4rFtuHX7drNDEhw2sSzunoJOBIzaTCRKy3+XqzUOQ== X-Received: by 2002:a05:6000:1a45:b0:29a:375d:4c41 with SMTP id t5-20020a0560001a4500b0029a375d4c41mr9771982wry.14.1675446284232; Fri, 03 Feb 2023 09:44:44 -0800 (PST) Received: from mai.. (146725694.box.freepro.com. [130.180.211.218]) by smtp.gmail.com with ESMTPSA id z1-20020a5d4c81000000b002bdd8f12effsm2443528wrs.30.2023.02.03.09.44.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Feb 2023 09:44:43 -0800 (PST) From: Daniel Lezcano To: rjw@rjwysocki.net Cc: daniel.lezcano@linaro.org, linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org, "Rafael J. Wysocki" , Zhang Rui , Len Brown , linux-kernel@vger.kernel.org (open list) Subject: [PATCH v2 10/11] thermal/acpi: Rewrite the trip point intialization to use the generic thermal trip Date: Fri, 3 Feb 2023 18:44:28 +0100 Message-Id: <20230203174429.3375691-11-daniel.lezcano@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230203174429.3375691-1-daniel.lezcano@linaro.org> References: <20230203174429.3375691-1-daniel.lezcano@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org We can use the thermal trip points defined in the thermal.h. Let's initialize them properly and when the code will be moved to the generic thermal structure, we will be able to remove the specific acpi trip points. Signed-off-by: Daniel Lezcano --- drivers/acpi/thermal.c | 238 ++++++++++++++++++++++++++++++++++++----- 1 file changed, 212 insertions(+), 26 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 9122d1c44777..f89236cd4fcd 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -153,6 +153,8 @@ struct acpi_thermal { struct acpi_thermal_trip trips[ACPI_THERMAL_TRIP_MAX]; struct acpi_handle_list devices; struct thermal_zone_device *thermal_zone; + struct thermal_trip *_trips; + int num_trips; int kelvin_offset; /* in millidegrees */ struct work_struct thermal_check_work; struct mutex thermal_check_lock; @@ -244,6 +246,198 @@ do { \ "Please report to linux-acpi@vger.kernel.org\n", str); \ } while (0) +static void acpi_thermal_trips_override(struct thermal_trip *trip, int temperature) +{ + if (temperature > trip->temperature) + pr_info("Overriding temperature %d->%d m°C\n", + trip->temperature, temperature); + + trip->temperature = temperature; +} + +static struct thermal_trip *acpi_thermal_trips_alloc_critical(struct acpi_thermal *tz, + struct thermal_trip *trips, + int *num_trips) +{ + acpi_status status = AE_OK; + unsigned long long temp; + + /* + * Module parameters disable the critical trip point + */ + if (crt < 0) + goto out; + + status = acpi_evaluate_integer(tz->device->handle, "_CRT", NULL, &temp); + if (ACPI_FAILURE(status)) { + acpi_handle_debug(tz->device->handle, "No critical threshold\n"); + goto out; + } + + if (temp <= 2732) { + pr_info(FW_BUG "Invalid critical threshold (%llu)\n", temp); + goto out; + } + + trips = krealloc(trips, sizeof(*trips) * (*num_trips + 1), GFP_KERNEL); + if (!trips) + goto out; + + memset(&trips[*num_trips], 0, sizeof(*trips)); + + trips[*num_trips].temperature = deci_kelvin_to_millicelsius(temp); + trips[*num_trips].type = THERMAL_TRIP_CRITICAL; + + if (crt > 0) + acpi_thermal_trips_override(&trips[*num_trips], crt * MILLI); + + (*num_trips)++; +out: + return trips; +} + +static struct thermal_trip *acpi_thermal_trips_alloc_hot(struct acpi_thermal *tz, + struct thermal_trip *trips, + int *num_trips) +{ + acpi_status status; + unsigned long long temp; + + status = acpi_evaluate_integer(tz->device->handle, "_HOT", NULL, &temp); + if (ACPI_FAILURE(status)) { + acpi_handle_debug(tz->device->handle, "No hot threshold\n"); + goto out; + } + + trips = krealloc(trips, sizeof(*trips) * (*num_trips + 1), GFP_KERNEL); + if (!trips) + goto out; + + memset(&trips[*num_trips], 0, sizeof(*trips)); + + trips[*num_trips].temperature = deci_kelvin_to_millicelsius(temp); + trips[*num_trips].type = THERMAL_TRIP_HOT; + + (*num_trips)++; +out: + return trips; +} + +static struct thermal_trip *acpi_thermal_trips_alloc_passive(struct acpi_thermal *tz, + struct thermal_trip *trips, + int *num_trips) +{ + struct acpi_handle_list devices; + acpi_status status; + unsigned long long temp; + + /* + * Module parameters disable all passive trip points + */ + if (psv < 0) + goto out; + + status = acpi_evaluate_integer(tz->device->handle, "_PSV", NULL, &temp); + if (ACPI_FAILURE(status)) { + acpi_handle_debug(tz->device->handle, "No passive threshold\n"); + goto out; + } + + status = acpi_evaluate_reference(tz->device->handle, "_PSL", NULL, &devices); + if (ACPI_FAILURE(status)) { + acpi_handle_debug(tz->device->handle, "No passive device associated\n"); + goto out; + } + + trips = krealloc(trips, sizeof(*trips) * (*num_trips + 1), GFP_KERNEL); + if (!trips) + goto out; + + memset(&trips[*num_trips], 0, sizeof(*trips)); + + trips[*num_trips].temperature = deci_kelvin_to_millicelsius(temp); + trips[*num_trips].type = THERMAL_TRIP_PASSIVE; + + (*num_trips)++; +out: + return trips; +} + +static struct thermal_trip *acpi_thermal_trips_alloc_active(struct acpi_thermal *tz, + struct thermal_trip *trips, + int *num_trips) +{ + struct acpi_handle_list devices; + acpi_status status; + unsigned long long temp; + int i; + + /* + * Module parameters disable all active trip points + */ + if (act < 0) + return trips; + + for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { + char name[5]; + + sprintf(name, "_AC%d", i); + + status = acpi_evaluate_integer(tz->device->handle, name, NULL, &temp); + if (ACPI_FAILURE(status)) + break; + + sprintf(name, "_AL%d", i); + + status = acpi_evaluate_reference(tz->device->handle, name, NULL, &devices); + if (ACPI_FAILURE(status)) { + acpi_handle_info(tz->device->handle, "No _AL%d defined for _AC%d\n", i, i); + break; + } + + trips = krealloc(trips, sizeof(*trips) * (*num_trips + 1), GFP_KERNEL); + if (!trips) + break; + + memset(&trips[*num_trips], 0, sizeof(*trips)); + + trips[*num_trips].temperature = deci_kelvin_to_millicelsius(temp); + trips[*num_trips].type = THERMAL_TRIP_ACTIVE; + + (*num_trips)++; + } + + /* + * We found at least one trip point and we have an override option + */ + if (i && act) { + /* + * Regarding the ACPI specification AC0 is the highest active + * temperature trip point. We will override this one. + */ + acpi_thermal_trips_override(&trips[*num_trips], act * MILLI); + } + + return trips; +} + +static struct thermal_trip *acpi_thermal_trips_alloc(struct acpi_thermal *tz, int *num_trips) +{ + struct thermal_trip *trips = NULL; + + *num_trips = 0; + + trips = acpi_thermal_trips_alloc_critical(tz, trips, num_trips); + + trips = acpi_thermal_trips_alloc_hot(tz, trips, num_trips); + + trips = acpi_thermal_trips_alloc_passive(tz, trips, num_trips); + + trips = acpi_thermal_trips_alloc_active(tz, trips, num_trips); + + return trips; +} + static int acpi_thermal_trips_update_critical(struct acpi_thermal *tz, int flag) { acpi_status status = AE_OK; @@ -398,7 +592,7 @@ static int acpi_thermal_trips_update_active(struct acpi_thermal *tz, int flag) int valid = 0; int i; - for (i = ACPI_THERMAL_TRIP_ACTIVE; i < ACPI_THERMAL_MAX_ACTIVE; i++) { + for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { char name[5] = { '_', 'A', 'C', ('0' + i), '\0' }; valid = tz->trips[i].flags.valid; @@ -820,35 +1014,20 @@ static struct thermal_zone_device_ops acpi_thermal_zone_ops = { static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz) { - int trips = 0; int result; acpi_status status; - int i; - - if (tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid) - trips++; - - if (tz->trips[ACPI_THERMAL_TRIP_HOT].flags.valid) - trips++; - - if (tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid) - trips++; - - for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && tz->trips[i].flags.valid; - i++, trips++); if (tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid) tz->thermal_zone = - thermal_zone_device_register("acpitz", trips, 0, tz, - &acpi_thermal_zone_ops, NULL, - tz->trips[ACPI_THERMAL_TRIP_PASSIVE].tsp*100, - tz->polling_frequency*100); + thermal_zone_device_register_with_trips("acpitz", tz->_trips, tz->num_trips, 0, tz, + &acpi_thermal_zone_ops, NULL, + tz->trips[ACPI_THERMAL_TRIP_PASSIVE].tsp*100, + tz->polling_frequency*100); else tz->thermal_zone = - thermal_zone_device_register("acpitz", trips, 0, tz, - &acpi_thermal_zone_ops, NULL, - 0, tz->polling_frequency * 100); - + thermal_zone_device_register_with_trips("acpitz", tz->_trips, tz->num_trips, 0, tz, + &acpi_thermal_zone_ops, NULL, + 0, tz->polling_frequency*100); if (IS_ERR(tz->thermal_zone)) return -ENODEV; @@ -1051,8 +1230,8 @@ static void acpi_thermal_check_fn(struct work_struct *work) static int acpi_thermal_add(struct acpi_device *device) { - struct acpi_thermal *tz; - int result; + struct acpi_thermal *tz = NULL; + int result = 0; if (!device) return -EINVAL; @@ -1073,9 +1252,13 @@ static int acpi_thermal_add(struct acpi_device *device) acpi_thermal_guess_offset(tz); + tz->_trips = acpi_thermal_trips_alloc(tz, &tz->num_trips); + if (!tz->_trips) + goto free_trips; + result = acpi_thermal_register_thermal_zone(tz); if (result) - goto free_memory; + goto free_trips; refcount_set(&tz->thermal_check_count, 3); mutex_init(&tz->thermal_check_lock); @@ -1085,6 +1268,8 @@ static int acpi_thermal_add(struct acpi_device *device) acpi_device_bid(device), tz->temperature); goto end; +free_trips: + kfree(tz->_trips); free_memory: kfree(tz); end: @@ -1101,6 +1286,7 @@ static void acpi_thermal_remove(struct acpi_device *device) flush_workqueue(acpi_thermal_pm_queue); tz = acpi_driver_data(device); + kfree(tz->trips); acpi_thermal_unregister_thermal_zone(tz); kfree(tz); }