From patchwork Thu Sep 17 03:22:19 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thara Gopinath X-Patchwork-Id: 250204 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8AF7CC433E2 for ; Thu, 17 Sep 2020 03:28:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 45FA32137B for ; Thu, 17 Sep 2020 03:28:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="kPWL4eCu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726269AbgIQD2b (ORCPT ); Wed, 16 Sep 2020 23:28:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41084 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726201AbgIQD2T (ORCPT ); Wed, 16 Sep 2020 23:28:19 -0400 Received: from mail-qk1-x742.google.com (mail-qk1-x742.google.com [IPv6:2607:f8b0:4864:20::742]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 16975C061351 for ; Wed, 16 Sep 2020 20:22:29 -0700 (PDT) Received: by mail-qk1-x742.google.com with SMTP id w186so888751qkd.1 for ; Wed, 16 Sep 2020 20:22:29 -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=gOjR8vxr5WwVeS1m/lfV7tbojY1ErwXvE0dsI9QW/uo=; b=kPWL4eCuolVXw35vyUzORP0/S/rIAepUZMAvp7ZZdAhaDRpkH1E25kh74NGxkqvub6 EHm7NsrHU7o8gAX4/7USoUt2l7awOKN6znJPoujEb9pcEkXkf6C0D+fZuW4s0eA0dKsL pYXjrlIcUsEe2LpunJ4kvAnWvvQSJ0NCJSXQ4dZ8R62GQw9TYY0cgCnEM+cmgHMfsMIu kLYLB+SnzfkuWKUf2lRGiJxt4TWy94+YT0h203bINrOr9nJvTELxnsSvjonnFlzPTfwb wyJcbIu0O1rtvGkQT61nfZ0I77Foo3LV8MySGrc2Vvt7r7QD1ULzvuaTFiGDgnFfq+/5 DTHA== 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=gOjR8vxr5WwVeS1m/lfV7tbojY1ErwXvE0dsI9QW/uo=; b=M+9YEN/uJAbYqdmcquoHg+tt5jiYT53eQqTKRNNOBcGCqlPKXJB+5xo3ksNq9Mpwey zbE/ZRFVO1VNQ2+/HVleIb0w62phxX6WIl4R0wyH/Dyi3y2YFB344LsM87KtX5auGwdZ eUmMbz3cMTdAjH8YLO8rHNYM1xJs+M3gcBFrvdB15vMEZg6w2H8OlWRSjmnZJB86FB4h d5ZMINsrZuUeckQOl46FARrQLmHR1q5J3Zkw4JxnRXQR6auxdr9MY+XtbuyYb6fBuPXK 574mOov5AuIIKSxSYCSxklUhFEuA0KUjO78wgcaTAxPfnT9U61XF6XXp6SZ2xTYYuFzP nDFg== X-Gm-Message-State: AOAM532Z0YCul0WNxweXbOYySYrxhs5sMI62XaRhQ1X6O7DyF/BVdnwX sJYD/xmRH0+rF6Xdta2aJhpJ/A== X-Google-Smtp-Source: ABdhPJwrZ4vSxdjRvdBIWTFXormzDUQW/UqI1T+x0gkPM8a4jmLPzyFxrDQyZ0xg8jAV6ESq5T3LxQ== X-Received: by 2002:a37:5042:: with SMTP id e63mr25056428qkb.453.1600312948930; Wed, 16 Sep 2020 20:22:28 -0700 (PDT) Received: from pop-os.fios-router.home (pool-71-163-245-5.washdc.fios.verizon.net. [71.163.245.5]) by smtp.googlemail.com with ESMTPSA id g45sm21370801qtb.60.2020.09.16.20.22.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2020 20:22:28 -0700 (PDT) From: Thara Gopinath To: rui.zhang@intel.com, daniel.lezcano@linaro.org, robh+dt@kernel.org, agross@kernel.org, bjorn.andersson@linaro.org Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, lukasz.luba@arm.com, amitk@kernel.org Subject: [PATCH RFC 1/8] dt-bindings: thermal: Introduce monitor-falling parameter to thermal trip point binding Date: Wed, 16 Sep 2020 23:22:19 -0400 Message-Id: <20200917032226.820371-2-thara.gopinath@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200917032226.820371-1-thara.gopinath@linaro.org> References: <20200917032226.820371-1-thara.gopinath@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Introduce a new binding parameter to thermal trip point description to indicate whether the temperature level specified by the trip point is monitored for a rise or fall in temperature. Signed-off-by: Thara Gopinath --- .../devicetree/bindings/thermal/thermal-zones.yaml | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/thermal/thermal-zones.yaml b/Documentation/devicetree/bindings/thermal/thermal-zones.yaml index 3ec9cc87ec50..cc1332ad6c16 100644 --- a/Documentation/devicetree/bindings/thermal/thermal-zones.yaml +++ b/Documentation/devicetree/bindings/thermal/thermal-zones.yaml @@ -161,6 +161,13 @@ patternProperties: The active trip type can be used to control other HW to help in cooling e.g. fans can be sped up or slowed down + monitor-falling: + description: | + boolean, If true, the trip point is being monitored for + falling temperature. If false/absent/default, the trip + point is being monitored for rising temperature. + type: boolean + required: - temperature - hysteresis From patchwork Thu Sep 17 03:22:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thara Gopinath X-Patchwork-Id: 292802 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 97B33C43461 for ; Thu, 17 Sep 2020 03:28:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 61B7E208E4 for ; Thu, 17 Sep 2020 03:28:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="iYF9saol" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726196AbgIQD2H (ORCPT ); Wed, 16 Sep 2020 23:28:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41036 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726135AbgIQD2F (ORCPT ); Wed, 16 Sep 2020 23:28:05 -0400 Received: from mail-qk1-x743.google.com (mail-qk1-x743.google.com [IPv6:2607:f8b0:4864:20::743]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C7C69C061355 for ; Wed, 16 Sep 2020 20:22:30 -0700 (PDT) Received: by mail-qk1-x743.google.com with SMTP id f142so816528qke.13 for ; Wed, 16 Sep 2020 20:22:30 -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=myxUO6gc+lFpyY6bxPaw2oxrXJNbpjbu9J+ggDGNP1Q=; b=iYF9saol7Uya9S+s+a5H00YbWk1vk/5ld+bL+/IoAQzNJ84leuLdIk4WZKQoc3IjJ7 458Luy1hzBiiGiPzkWs+JegOxXStBqnEASvcNydckoGa7tcJ7F3c14FGQttP7joLwjfZ qw1Eohni5Xmwr8EyOfpZyf2VSI2daffRU4FDuOU+ocHwwIEy8SsNZ8E3bJqTDd9NxNKz N1zHygoqOkMvs+n02vrxFKxNZrzLWawNw/FjF74zU0xzcGLt7BkPLhyCZ0MY8D39DkVl xia9YMQcIYE6ykJstBekisdhdf0vr588cfSuqVv09iHwjh9ydJg5kh0OXIX+1akr4yqs kD+g== 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=myxUO6gc+lFpyY6bxPaw2oxrXJNbpjbu9J+ggDGNP1Q=; b=H1DYuApmHAmdfO29zbAaZvI4yLldCbkPnPYVbGdcV6l/aXuxpbACdo4vdlWvwpt5R6 nqddaj3fItO97gXPduYLSsRjjue7ldLcmAsNgfBUSAMElfFTledGOApUsNzrtaEYrfqD 4Hp3vGokBfc3db7BsMCHthgVBwiwGBRFp92n39VbciycHKgKEOXttUao/tEYeQQUuClG ymiJYAZM5h4W0EWMU6X8WU850ZVYjQke1tIiTaIQNvVWYH9tVWd+6/CE/aoEXzmvvtF2 vv445+G9XLE68+JF6DAcOk45p24DwsnZ1eTHT7gZtBpf+/r9A7tZhf4fEpENfxYP1pCE z4Mg== X-Gm-Message-State: AOAM5319wVX1taA0Yfzr8x/ijGai7QOWDkly6T6L+li159udh8MFLP2x z6voCGshJbFf0KLKXdKv9uxuEQ== X-Google-Smtp-Source: ABdhPJyC733LwHdlOPKyh0SJj9Ov7zceVdFCYbRyxyeI44PNS39rWktdOG6zOgaxjUTzbgJIqt7rUg== X-Received: by 2002:ae9:c310:: with SMTP id n16mr11085776qkg.318.1600312949899; Wed, 16 Sep 2020 20:22:29 -0700 (PDT) Received: from pop-os.fios-router.home (pool-71-163-245-5.washdc.fios.verizon.net. [71.163.245.5]) by smtp.googlemail.com with ESMTPSA id g45sm21370801qtb.60.2020.09.16.20.22.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2020 20:22:29 -0700 (PDT) From: Thara Gopinath To: rui.zhang@intel.com, daniel.lezcano@linaro.org, robh+dt@kernel.org, agross@kernel.org, bjorn.andersson@linaro.org Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, lukasz.luba@arm.com, amitk@kernel.org Subject: [PATCH RFC 2/8] thermal: Introduce new property monitor_type for trip point. Date: Wed, 16 Sep 2020 23:22:20 -0400 Message-Id: <20200917032226.820371-3-thara.gopinath@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200917032226.820371-1-thara.gopinath@linaro.org> References: <20200917032226.820371-1-thara.gopinath@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Thermal trip points can be defined to indicate whether a temperature rise or a temperature fall is to be monitored. This property can now be defined in the DT bindings for a trip point. To support this following three changes are introduced to thermal core and sysfs code. 1. Define a new variable in thermal_trip to capture the monitor rising/falling information from trip point DT bindings. 2. Define a new ops in thermal_zone_device_ops that can be populated to indicate whether a trip is being monitored for rising or falling temperature. If the ops is not populated or if the binding is missing in the DT, it is assumed that the trip is being monitored for rising temperature. (default behavior today) Signed-off-by: Thara Gopinath --- drivers/thermal/thermal_core.h | 2 ++ include/linux/thermal.h | 2 ++ include/uapi/linux/thermal.h | 5 +++++ 3 files changed, 9 insertions(+) diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h index e00fc5585ea8..c56addfe2284 100644 --- a/drivers/thermal/thermal_core.h +++ b/drivers/thermal/thermal_core.h @@ -77,12 +77,14 @@ int power_actor_set_power(struct thermal_cooling_device *cdev, * @temperature: temperature value in miliCelsius * @hysteresis: relative hysteresis in miliCelsius * @type: trip point type + * @monitor_type: trip point monitor type */ struct thermal_trip { struct device_node *np; int temperature; int hysteresis; enum thermal_trip_type type; + enum thermal_trip_monitor_type monitor_type; }; int get_tz_trend(struct thermal_zone_device *tz, int trip); diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 42ef807e5d84..a50ed958d0bd 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -72,6 +72,8 @@ struct thermal_zone_device_ops { int (*set_trip_temp) (struct thermal_zone_device *, int, int); int (*get_trip_hyst) (struct thermal_zone_device *, int, int *); int (*set_trip_hyst) (struct thermal_zone_device *, int, int); + int (*get_trip_mon_type)(struct thermal_zone_device *, int, + enum thermal_trip_monitor_type *); int (*get_crit_temp) (struct thermal_zone_device *, int *); int (*set_emul_temp) (struct thermal_zone_device *, int); int (*get_trend) (struct thermal_zone_device *, int, diff --git a/include/uapi/linux/thermal.h b/include/uapi/linux/thermal.h index c105054cbb57..d3bb4e4fad69 100644 --- a/include/uapi/linux/thermal.h +++ b/include/uapi/linux/thermal.h @@ -16,6 +16,11 @@ enum thermal_trip_type { THERMAL_TRIP_CRITICAL, }; +enum thermal_trip_monitor_type { + THERMAL_TRIP_MONITOR_RISING = 0, + THERMAL_TRIP_MONITOR_FALLING +}; + /* Adding event notification support elements */ #define THERMAL_GENL_FAMILY_NAME "thermal" #define THERMAL_GENL_VERSION 0x01 From patchwork Thu Sep 17 03:22:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thara Gopinath X-Patchwork-Id: 292801 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 38AE3C35256 for ; 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[71.163.245.5]) by smtp.googlemail.com with ESMTPSA id g45sm21370801qtb.60.2020.09.16.20.22.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2020 20:22:30 -0700 (PDT) From: Thara Gopinath To: rui.zhang@intel.com, daniel.lezcano@linaro.org, robh+dt@kernel.org, agross@kernel.org, bjorn.andersson@linaro.org Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, lukasz.luba@arm.com, amitk@kernel.org Subject: [PATCH RFC 3/8] thermal: thermal_of: Extend thermal dt driver to support bi-directional monitoring of a thermal trip point. Date: Wed, 16 Sep 2020 23:22:21 -0400 Message-Id: <20200917032226.820371-4-thara.gopinath@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200917032226.820371-1-thara.gopinath@linaro.org> References: <20200917032226.820371-1-thara.gopinath@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Introduce of_thermal_get_trip_monitor_type to return the direction of monitoring of a thermal trip point. Also translate the DT information regarding trip point monitor direction into the thermal framework. Signed-off-by: Thara Gopinath --- drivers/thermal/thermal_of.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c index 69ef12f852b7..5bc7f5bab772 100644 --- a/drivers/thermal/thermal_of.c +++ b/drivers/thermal/thermal_of.c @@ -328,6 +328,20 @@ static int of_thermal_get_trip_hyst(struct thermal_zone_device *tz, int trip, return 0; } +static int of_thermal_get_trip_monitor_type + (struct thermal_zone_device *tz, int trip, + enum thermal_trip_monitor_type *type) +{ + struct __thermal_zone *data = tz->devdata; + + if (trip >= data->ntrips || trip < 0) + return -EDOM; + + *type = data->trips[trip].monitor_type; + + return 0; +} + static int of_thermal_set_trip_hyst(struct thermal_zone_device *tz, int trip, int hyst) { @@ -363,6 +377,7 @@ static struct thermal_zone_device_ops of_thermal_ops = { .set_trip_temp = of_thermal_set_trip_temp, .get_trip_hyst = of_thermal_get_trip_hyst, .set_trip_hyst = of_thermal_set_trip_hyst, + .get_trip_mon_type = of_thermal_get_trip_monitor_type, .get_crit_temp = of_thermal_get_crit_temp, .bind = of_thermal_bind, @@ -801,6 +816,7 @@ static int thermal_of_populate_trip(struct device_node *np, { int prop; int ret; + bool is_monitor_falling; ret = of_property_read_u32(np, "temperature", &prop); if (ret < 0) { @@ -822,6 +838,12 @@ static int thermal_of_populate_trip(struct device_node *np, return ret; } + ret = of_property_read_bool(np, "monitor-falling"); + if (is_monitor_falling) + trip->monitor_type = THERMAL_TRIP_MONITOR_FALLING; + else + trip->monitor_type = THERMAL_TRIP_MONITOR_RISING; + /* Required for cooling map matching */ trip->np = np; of_node_get(np); From patchwork Thu Sep 17 03:22:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thara Gopinath X-Patchwork-Id: 250203 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9EEEBC35256 for ; 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[71.163.245.5]) by smtp.googlemail.com with ESMTPSA id g45sm21370801qtb.60.2020.09.16.20.22.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2020 20:22:31 -0700 (PDT) From: Thara Gopinath To: rui.zhang@intel.com, daniel.lezcano@linaro.org, robh+dt@kernel.org, agross@kernel.org, bjorn.andersson@linaro.org Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, lukasz.luba@arm.com, amitk@kernel.org Subject: [PATCH RFC 4/8] thermal:core:Add genetlink notifications for monitoring falling temperature Date: Wed, 16 Sep 2020 23:22:22 -0400 Message-Id: <20200917032226.820371-5-thara.gopinath@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200917032226.820371-1-thara.gopinath@linaro.org> References: <20200917032226.820371-1-thara.gopinath@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add notification calls for trip points that are being monitored for falling temperatures. Signed-off-by: Thara Gopinath --- drivers/thermal/thermal_core.c | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 72bf159bcecc..bfd436379408 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -417,6 +417,7 @@ static void handle_critical_trips(struct thermal_zone_device *tz, static void handle_thermal_trip(struct thermal_zone_device *tz, int trip) { enum thermal_trip_type type; + enum thermal_trip_monitor_type mon_type; int trip_temp, hyst = 0; /* Ignore disabled trip points */ @@ -428,13 +429,25 @@ static void handle_thermal_trip(struct thermal_zone_device *tz, int trip) if (tz->ops->get_trip_hyst) tz->ops->get_trip_hyst(tz, trip, &hyst); + if (tz->ops->get_trip_mon_type) + tz->ops->get_trip_mon_type(tz, trip, &mon_type); + if (tz->last_temperature != THERMAL_TEMP_INVALID) { - if (tz->last_temperature < trip_temp && - tz->temperature >= trip_temp) - thermal_notify_tz_trip_up(tz->id, trip); - if (tz->last_temperature >= trip_temp && - tz->temperature < (trip_temp - hyst)) - thermal_notify_tz_trip_down(tz->id, trip); + if (mon_type == THERMAL_TRIP_MONITOR_FALLING) { + if (tz->last_temperature > trip_temp && + tz->temperature <= trip_temp) + thermal_notify_tz_trip_down(tz->id, trip); + if (tz->last_temperature <= trip_temp && + tz->temperature > (trip_temp + hyst)) + thermal_notify_tz_trip_up(tz->id, trip); + } else { + if (tz->last_temperature < trip_temp && + tz->temperature >= trip_temp) + thermal_notify_tz_trip_up(tz->id, trip); + if (tz->last_temperature >= trip_temp && + tz->temperature < (trip_temp - hyst)) + thermal_notify_tz_trip_down(tz->id, trip); + } } if (type == THERMAL_TRIP_CRITICAL || type == THERMAL_TRIP_HOT) From patchwork Thu Sep 17 03:22:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thara Gopinath X-Patchwork-Id: 292800 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0E2BEC43461 for ; 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[71.163.245.5]) by smtp.googlemail.com with ESMTPSA id g45sm21370801qtb.60.2020.09.16.20.22.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2020 20:22:32 -0700 (PDT) From: Thara Gopinath To: rui.zhang@intel.com, daniel.lezcano@linaro.org, robh+dt@kernel.org, agross@kernel.org, bjorn.andersson@linaro.org Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, lukasz.luba@arm.com, amitk@kernel.org Subject: [PATCH RFC 6/8] thermal: Modify thermal governors to do nothing for trip points being monitored for falling temperature Date: Wed, 16 Sep 2020 23:22:24 -0400 Message-Id: <20200917032226.820371-7-thara.gopinath@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200917032226.820371-1-thara.gopinath@linaro.org> References: <20200917032226.820371-1-thara.gopinath@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org For now, thermal governors other than step wise governorr do not support monitoring of falling temperature. Hence, in case of calls to the governor for trip points marked as THERMAL_TRIP_MONITOR_FALLING, return doing nothing. Signed-off-by: Thara Gopinath --- drivers/thermal/gov_bang_bang.c | 12 ++++++++++++ drivers/thermal/gov_fair_share.c | 12 ++++++++++++ drivers/thermal/gov_power_allocator.c | 12 ++++++++++++ 3 files changed, 36 insertions(+) diff --git a/drivers/thermal/gov_bang_bang.c b/drivers/thermal/gov_bang_bang.c index 991a1c54296d..a662047e5961 100644 --- a/drivers/thermal/gov_bang_bang.c +++ b/drivers/thermal/gov_bang_bang.c @@ -99,6 +99,18 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip) static int bang_bang_control(struct thermal_zone_device *tz, int trip) { struct thermal_instance *instance; + enum thermal_trip_monitor_type monitor_type = + THERMAL_TRIP_MONITOR_RISING; + + /* + * Return doing nothing if the trip point is monitored for + * falling temperature + */ + if (tz->ops->get_trip_mon_type) { + tz->ops->get_trip_mon_type(tz, trip, &monitor_type); + if (monitor_type == THERMAL_TRIP_MONITOR_FALLING) + return 0; + } thermal_zone_trip_update(tz, trip); diff --git a/drivers/thermal/gov_fair_share.c b/drivers/thermal/gov_fair_share.c index aaa07180ab48..064ad6ed67ad 100644 --- a/drivers/thermal/gov_fair_share.c +++ b/drivers/thermal/gov_fair_share.c @@ -81,6 +81,18 @@ static int fair_share_throttle(struct thermal_zone_device *tz, int trip) int total_weight = 0; int total_instance = 0; int cur_trip_level = get_trip_level(tz); + enum thermal_trip_monitor_type monitor_type = + THERMAL_TRIP_MONITOR_RISING; + + /* + * Return doing nothing if the trip point is monitored for + * falling temperature + */ + if (tz->ops->get_trip_mon_type) { + tz->ops->get_trip_mon_type(tz, trip, &monitor_type); + if (monitor_type == THERMAL_TRIP_MONITOR_FALLING) + return 0; + } list_for_each_entry(instance, &tz->thermal_instances, tz_node) { if (instance->trip != trip) diff --git a/drivers/thermal/gov_power_allocator.c b/drivers/thermal/gov_power_allocator.c index 5cb518d8f156..0f674cd1b9b8 100644 --- a/drivers/thermal/gov_power_allocator.c +++ b/drivers/thermal/gov_power_allocator.c @@ -606,6 +606,8 @@ static int power_allocator_throttle(struct thermal_zone_device *tz, int trip) { int ret; int switch_on_temp, control_temp; + enum thermal_trip_monitor_type monitor_type = + THERMAL_TRIP_MONITOR_RISING; struct power_allocator_params *params = tz->governor_data; /* @@ -615,6 +617,16 @@ static int power_allocator_throttle(struct thermal_zone_device *tz, int trip) if (trip != params->trip_max_desired_temperature) return 0; + /* + * Return doing nothing if the trip point is monitored for + * falling temperature + */ + if (tz->ops->get_trip_mon_type) { + tz->ops->get_trip_mon_type(tz, trip, &monitor_type); + if (monitor_type == THERMAL_TRIP_MONITOR_FALLING) + return 0; + } + ret = tz->ops->get_trip_temp(tz, params->trip_switch_on, &switch_on_temp); if (!ret && (tz->temperature < switch_on_temp)) { From patchwork Thu Sep 17 03:22:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thara Gopinath X-Patchwork-Id: 250205 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 32AA6C433E2 for ; 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[71.163.245.5]) by smtp.googlemail.com with ESMTPSA id g45sm21370801qtb.60.2020.09.16.20.22.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2020 20:22:33 -0700 (PDT) From: Thara Gopinath To: rui.zhang@intel.com, daniel.lezcano@linaro.org, robh+dt@kernel.org, agross@kernel.org, bjorn.andersson@linaro.org Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, lukasz.luba@arm.com, amitk@kernel.org Subject: [PATCH RFC 7/8] thermal:core: Add is_warming_dev and supporting warming device api's to the cooling dev framework. Date: Wed, 16 Sep 2020 23:22:25 -0400 Message-Id: <20200917032226.820371-8-thara.gopinath@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200917032226.820371-1-thara.gopinath@linaro.org> References: <20200917032226.820371-1-thara.gopinath@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Introduce a variable is_warming_dev to indicate if a "cooling" device is actually a warming device or not. Also introduce api's to register and unregister warming device. This is a temporary patch. If we agree to replace the term "cooling" with "mitigating" (or any other appropriate term) in the thermal framework, this patch can be dropped. Also I have not added warming_device_register api for all the versions of cooling_device_register because devm_thermal_of_warming_device_register is the only api needed in the kernel today as is evident by the next patch in this series. Signed-off-by: Thara Gopinath --- drivers/thermal/thermal_core.c | 88 +++++++++++++++++++++++++++++----- include/linux/thermal.h | 7 +++ 2 files changed, 83 insertions(+), 12 deletions(-) diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index bfd436379408..4aae48a80e00 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -1101,7 +1101,8 @@ static void bind_cdev(struct thermal_cooling_device *cdev) */ static struct thermal_cooling_device * __thermal_cooling_device_register(struct device_node *np, - const char *type, void *devdata, + const char *type, bool is_warming_dev, + void *devdata, const struct thermal_cooling_device_ops *ops) { struct thermal_cooling_device *cdev; @@ -1134,6 +1135,7 @@ __thermal_cooling_device_register(struct device_node *np, cdev->updated = false; cdev->device.class = &thermal_class; cdev->devdata = devdata; + cdev->is_warming_dev = is_warming_dev; thermal_cooling_device_setup_sysfs(cdev); dev_set_name(&cdev->device, "cooling_device%d", cdev->id); result = device_register(&cdev->device); @@ -1178,7 +1180,7 @@ struct thermal_cooling_device * thermal_cooling_device_register(const char *type, void *devdata, const struct thermal_cooling_device_ops *ops) { - return __thermal_cooling_device_register(NULL, type, devdata, ops); + return __thermal_cooling_device_register(NULL, type, false, devdata, ops); } EXPORT_SYMBOL_GPL(thermal_cooling_device_register); @@ -1202,7 +1204,7 @@ thermal_of_cooling_device_register(struct device_node *np, const char *type, void *devdata, const struct thermal_cooling_device_ops *ops) { - return __thermal_cooling_device_register(np, type, devdata, ops); + return __thermal_cooling_device_register(np, type, false, devdata, ops); } EXPORT_SYMBOL_GPL(thermal_of_cooling_device_register); @@ -1242,7 +1244,7 @@ devm_thermal_of_cooling_device_register(struct device *dev, if (!ptr) return ERR_PTR(-ENOMEM); - tcd = __thermal_cooling_device_register(np, type, devdata, ops); + tcd = __thermal_cooling_device_register(np, type, false, devdata, ops); if (IS_ERR(tcd)) { devres_free(ptr); return tcd; @@ -1255,6 +1257,49 @@ devm_thermal_of_cooling_device_register(struct device *dev, } EXPORT_SYMBOL_GPL(devm_thermal_of_cooling_device_register); +/** + * devm_thermal_of_warming_device_register() - register an OF thermal warming + * device + * @dev: a valid struct device pointer of a sensor device. + * @np: a pointer to a device tree node. + * @type: the thermal cooling device type. + * @devdata: device private data. + * @ops: standard thermal cooling devices callbacks. + * + * This function will register a warming device with device tree node reference. + * This interface function adds a new thermal warming device (fan/processor/...) + * to /sys/class/thermal/ folder as cooling_device[0-*]. It tries to bind itself + * to all the thermal zone devices registered at the same time. + * + * Return: a pointer to the created struct thermal_cooling_device or an + * ERR_PTR. Caller must check return value with IS_ERR*() helpers. + */ +struct thermal_cooling_device * +devm_thermal_of_warming_device_register(struct device *dev, + struct device_node *np, + char *type, void *devdata, + const struct thermal_cooling_device_ops *ops) +{ + struct thermal_cooling_device **ptr, *tcd; + + ptr = devres_alloc(thermal_cooling_device_release, sizeof(*ptr), + GFP_KERNEL); + if (!ptr) + return ERR_PTR(-ENOMEM); + + tcd = __thermal_cooling_device_register(np, type, true, devdata, ops); + if (IS_ERR(tcd)) { + devres_free(ptr); + return tcd; + } + + *ptr = tcd; + devres_add(dev, ptr); + + return tcd; +} +EXPORT_SYMBOL_GPL(devm_thermal_of_warming_device_register); + static void __unbind(struct thermal_zone_device *tz, int mask, struct thermal_cooling_device *cdev) { @@ -1265,14 +1310,8 @@ static void __unbind(struct thermal_zone_device *tz, int mask, thermal_zone_unbind_cooling_device(tz, i, cdev); } -/** - * thermal_cooling_device_unregister - removes a thermal cooling device - * @cdev: the thermal cooling device to remove. - * - * thermal_cooling_device_unregister() must be called when a registered - * thermal cooling device is no longer needed. - */ -void thermal_cooling_device_unregister(struct thermal_cooling_device *cdev) +static void +__thermal_cooling_device_unregister(struct thermal_cooling_device *cdev) { int i; const struct thermal_zone_params *tzp; @@ -1319,8 +1358,33 @@ void thermal_cooling_device_unregister(struct thermal_cooling_device *cdev) thermal_cooling_device_destroy_sysfs(cdev); put_device(&cdev->device); } + +/** + * thermal_cooling_device_unregister - removes a thermal cooling device + * @cdev: the thermal cooling device to remove. + * + * thermal_cooling_device_unregister() must be called when a registered + * thermal cooling device is no longer needed. + */ +void thermal_cooling_device_unregister(struct thermal_cooling_device *cdev) +{ + __thermal_cooling_device_unregister(cdev); +} EXPORT_SYMBOL_GPL(thermal_cooling_device_unregister); +/** + * thermal_warming_device_unregister - removes a thermal warming device + * @cdev: the thermal warming device to remove. + * + * thermal_warming_device_unregister() must be called when a registered + * thermal warming device is no longer needed. + */ +void thermal_warming_device_unregister(struct thermal_cooling_device *cdev) +{ + __thermal_cooling_device_unregister(cdev); +} +EXPORT_SYMBOL_GPL(thermal_warming_device_unregister); + static void bind_tz(struct thermal_zone_device *tz) { int i, ret; diff --git a/include/linux/thermal.h b/include/linux/thermal.h index a50ed958d0bd..455120f485dd 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -96,6 +96,7 @@ struct thermal_cooling_device_ops { struct thermal_cooling_device { int id; + bool is_warming_dev; char type[THERMAL_NAME_LENGTH]; struct device device; struct device_node *np; @@ -393,7 +394,13 @@ devm_thermal_of_cooling_device_register(struct device *dev, struct device_node *np, char *type, void *devdata, const struct thermal_cooling_device_ops *ops); +struct thermal_cooling_device * +devm_thermal_of_warming_device_register(struct device *dev, + struct device_node *np, + char *type, void *devdata, + const struct thermal_cooling_device_ops *ops); void thermal_cooling_device_unregister(struct thermal_cooling_device *); +void thermal_warming_device_unregister(struct thermal_cooling_device *); struct thermal_zone_device *thermal_zone_get_zone_by_name(const char *name); int thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp); int thermal_zone_get_slope(struct thermal_zone_device *tz); From patchwork Thu Sep 17 03:22:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thara Gopinath X-Patchwork-Id: 250202 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 165CDC35257 for ; Thu, 17 Sep 2020 03:29:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D62E520872 for ; 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[71.163.245.5]) by smtp.googlemail.com with ESMTPSA id g45sm21370801qtb.60.2020.09.16.20.22.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2020 20:22:34 -0700 (PDT) From: Thara Gopinath To: rui.zhang@intel.com, daniel.lezcano@linaro.org, robh+dt@kernel.org, agross@kernel.org, bjorn.andersson@linaro.org Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, lukasz.luba@arm.com, amitk@kernel.org Subject: [PATCH RFC 8/8] soc:qcom:qcom_aoss: Change cooling_device_register to warming_device_register Date: Wed, 16 Sep 2020 23:22:26 -0400 Message-Id: <20200917032226.820371-9-thara.gopinath@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200917032226.820371-1-thara.gopinath@linaro.org> References: <20200917032226.820371-1-thara.gopinath@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Always on subsystem host resources cx and ebi that are used as warming devices. Use the newly introduce _warming_device_register to register these devices with the thermal framework. Signed-off-by: Thara Gopinath --- drivers/soc/qcom/qcom_aoss.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/soc/qcom/qcom_aoss.c b/drivers/soc/qcom/qcom_aoss.c index ed2c687c16b3..4f65c03a5def 100644 --- a/drivers/soc/qcom/qcom_aoss.c +++ b/drivers/soc/qcom/qcom_aoss.c @@ -461,7 +461,7 @@ static int qmp_cooling_device_add(struct qmp *qmp, qmp_cdev->qmp = qmp; qmp_cdev->state = !qmp_cdev_max_state; qmp_cdev->name = cdev_name; - qmp_cdev->cdev = devm_thermal_of_cooling_device_register + qmp_cdev->cdev = devm_thermal_of_warming_device_register (qmp->dev, node, cdev_name, qmp_cdev, &qmp_cooling_device_ops); @@ -501,7 +501,7 @@ static int qmp_cooling_devices_register(struct qmp *qmp) unroll: while (--count >= 0) - thermal_cooling_device_unregister + thermal_warming_device_unregister (qmp->cooling_devs[count].cdev); return ret; @@ -512,7 +512,7 @@ static void qmp_cooling_devices_remove(struct qmp *qmp) int i; for (i = 0; i < QMP_NUM_COOLING_RESOURCES; i++) - thermal_cooling_device_unregister(qmp->cooling_devs[i].cdev); + thermal_warming_device_unregister(qmp->cooling_devs[i].cdev); } static int qmp_probe(struct platform_device *pdev)