From patchwork Mon Dec 7 13:47:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: thermal-bot for Julien Panis X-Patchwork-Id: 339402 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=-20.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED 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 17C5DC4167B for ; Mon, 7 Dec 2020 13:47:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DABAA2343F for ; Mon, 7 Dec 2020 13:47:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726042AbgLGNr4 (ORCPT ); Mon, 7 Dec 2020 08:47:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33568 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726137AbgLGNr4 (ORCPT ); Mon, 7 Dec 2020 08:47:56 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9ACC9C0613D2 for ; Mon, 7 Dec 2020 05:47:15 -0800 (PST) Date: Mon, 07 Dec 2020 13:47:12 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1607348833; 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=k5dAWGKV6s9PkFPi5bk5H5T6vFag0mKd0Jq/SHwUdNI=; b=B05aYaYuqZUn6oeLCgcxlTvpjVUZHBxXEkqQEc6HYLotSkOvzTDMXjIJr+UNggA6p397xz 8KRSP6QtI12bdHrLC/SKaCUhuMCHseDE9jJq3BIULlUllHE+INiY8jDczt2ZCHoy4Ljctl 3HqjdwjROnvyMsCghSuhzaU3n+egYfJerXszQt4dYIuHkSOxoWZVyyRnQXMUHXW6CwWcCH 9LysSouQ/d9cOPMjqpENpchkgQVKRltk2IGjlKXKVAwRjEpCC4cv+7bGaYOZUVlg5BPMWn Kcfk8dskT3Y9GLhbBB4YTJEZ8JAbLL0LPfFuN6Y5cNq3qWTAhfY+dpC6xWd4sw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1607348833; 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=k5dAWGKV6s9PkFPi5bk5H5T6vFag0mKd0Jq/SHwUdNI=; b=7RoJuawBhQ8brbz53zeI7V+9Wja+Ss97ASmB52WNqKCvJnviJdDwh3/SPzqV5X+oSFoQCm xtBz4a23Pjv8hdBg== From: thermal-bot for Niklas =?utf-8?q?S=C3=B6derlund?= Sender: tip-bot2@linutronix.de Reply-to: linux-pm@vger.kernel.org To: linux-pm@vger.kernel.org Subject: [thermal: thermal/next] thermal: rcar_gen3_thermal: Do not use interrupts for normal operation Cc: niklas.soderlund+renesas@ragnatech.se, Daniel Lezcano , rui.zhang@intel.com, amitk@kernel.org In-Reply-To: <20201126220923.3107213-1-niklas.soderlund+renesas@ragnatech.se> References: <20201126220923.3107213-1-niklas.soderlund+renesas@ragnatech.se> MIME-Version: 1.0 Message-ID: <160734883281.3364.5930229521034807240.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: 1b57b9597c779f0a20c5837abec31f600240496b Gitweb: https://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux.git//1b57b9597c779f0a20c5837abec31f600240496b Author: Niklas Söderlund AuthorDate: Thu, 26 Nov 2020 23:09:23 +01:00 Committer: Daniel Lezcano CommitterDate: Mon, 30 Nov 2020 16:38:27 +01:00 thermal: rcar_gen3_thermal: Do not use interrupts for normal operation Remove the usage of interrupts for the normal temperature operation and depend on the polling performed by the thermal core. This is done to prepare to use the interrupts as they are intended to trigger once specific trip points are passed and not to react to temperature changes in the normal operational range. Signed-off-by: Niklas Söderlund Signed-off-by: Daniel Lezcano Link: https://lore.kernel.org/r/20201126220923.3107213-1-niklas.soderlund+renesas@ragnatech.se --- drivers/thermal/rcar_gen3_thermal.c | 108 +--------------------------- 1 file changed, 2 insertions(+), 106 deletions(-) diff --git a/drivers/thermal/rcar_gen3_thermal.c b/drivers/thermal/rcar_gen3_thermal.c index 0dd47dc..94f2c13 100644 --- a/drivers/thermal/rcar_gen3_thermal.c +++ b/drivers/thermal/rcar_gen3_thermal.c @@ -188,70 +188,10 @@ static int rcar_gen3_thermal_get_temp(void *devdata, int *temp) return 0; } -static int rcar_gen3_thermal_mcelsius_to_temp(struct rcar_gen3_thermal_tsc *tsc, - int mcelsius) -{ - int celsius, val; - - celsius = DIV_ROUND_CLOSEST(mcelsius, 1000); - if (celsius <= INT_FIXPT(tsc->tj_t)) - val = celsius * tsc->coef.a1 + tsc->coef.b1; - else - val = celsius * tsc->coef.a2 + tsc->coef.b2; - - return INT_FIXPT(val); -} - -static int rcar_gen3_thermal_update_range(struct rcar_gen3_thermal_tsc *tsc) -{ - int temperature, low, high; - - rcar_gen3_thermal_get_temp(tsc, &temperature); - - low = temperature - MCELSIUS(1); - high = temperature + MCELSIUS(1); - - rcar_gen3_thermal_write(tsc, REG_GEN3_IRQTEMP1, - rcar_gen3_thermal_mcelsius_to_temp(tsc, low)); - - rcar_gen3_thermal_write(tsc, REG_GEN3_IRQTEMP2, - rcar_gen3_thermal_mcelsius_to_temp(tsc, high)); - - return 0; -} - static const struct thermal_zone_of_device_ops rcar_gen3_tz_of_ops = { .get_temp = rcar_gen3_thermal_get_temp, }; -static void rcar_thermal_irq_set(struct rcar_gen3_thermal_priv *priv, bool on) -{ - unsigned int i; - u32 val = on ? IRQ_TEMPD1 | IRQ_TEMP2 : 0; - - for (i = 0; i < priv->num_tscs; i++) - rcar_gen3_thermal_write(priv->tscs[i], REG_GEN3_IRQMSK, val); -} - -static irqreturn_t rcar_gen3_thermal_irq(int irq, void *data) -{ - struct rcar_gen3_thermal_priv *priv = data; - u32 status; - int i; - - for (i = 0; i < priv->num_tscs; i++) { - status = rcar_gen3_thermal_read(priv->tscs[i], REG_GEN3_IRQSTR); - rcar_gen3_thermal_write(priv->tscs[i], REG_GEN3_IRQSTR, 0); - if (status) { - rcar_gen3_thermal_update_range(priv->tscs[i]); - thermal_zone_device_update(priv->tscs[i]->zone, - THERMAL_EVENT_UNSPECIFIED); - } - } - - return IRQ_HANDLED; -} - static const struct soc_device_attribute r8a7795es1[] = { { .soc_id = "r8a7795", .revision = "ES1.*" }, { /* sentinel */ } @@ -268,7 +208,6 @@ static void rcar_gen3_thermal_init_r8a7795es1(struct rcar_gen3_thermal_tsc *tsc) rcar_gen3_thermal_write(tsc, REG_GEN3_IRQCTL, 0x3F); rcar_gen3_thermal_write(tsc, REG_GEN3_IRQMSK, 0); - rcar_gen3_thermal_write(tsc, REG_GEN3_IRQEN, IRQ_TEMPD1 | IRQ_TEMP2); rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR, CTSR_PONM | CTSR_AOUT | CTSR_THBGR | CTSR_VMEN); @@ -294,7 +233,6 @@ static void rcar_gen3_thermal_init(struct rcar_gen3_thermal_tsc *tsc) rcar_gen3_thermal_write(tsc, REG_GEN3_IRQCTL, 0); rcar_gen3_thermal_write(tsc, REG_GEN3_IRQMSK, 0); - rcar_gen3_thermal_write(tsc, REG_GEN3_IRQEN, IRQ_TEMPD1 | IRQ_TEMP2); reg_val = rcar_gen3_thermal_read(tsc, REG_GEN3_THCTR); reg_val |= THCTR_THSST; @@ -345,9 +283,6 @@ MODULE_DEVICE_TABLE(of, rcar_gen3_thermal_dt_ids); static int rcar_gen3_thermal_remove(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct rcar_gen3_thermal_priv *priv = dev_get_drvdata(dev); - - rcar_thermal_irq_set(priv, false); pm_runtime_put(dev); pm_runtime_disable(dev); @@ -369,8 +304,7 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev) const int *rcar_gen3_ths_tj_1 = of_device_get_match_data(dev); struct resource *res; struct thermal_zone_device *zone; - int ret, irq, i; - char *irqname; + int ret, i; /* default values if FUSEs are missing */ /* TODO: Read values from hardware on supported platforms */ @@ -386,28 +320,6 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev) platform_set_drvdata(pdev, priv); - /* - * Request 2 (of the 3 possible) IRQs, the driver only needs to - * to trigger on the low and high trip points of the current - * temp window at this point. - */ - for (i = 0; i < 2; i++) { - irq = platform_get_irq(pdev, i); - if (irq < 0) - return irq; - - irqname = devm_kasprintf(dev, GFP_KERNEL, "%s:ch%d", - dev_name(dev), i); - if (!irqname) - return -ENOMEM; - - ret = devm_request_threaded_irq(dev, irq, NULL, - rcar_gen3_thermal_irq, - IRQF_ONESHOT, irqname, priv); - if (ret) - return ret; - } - pm_runtime_enable(dev); pm_runtime_get_sync(dev); @@ -459,8 +371,6 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev) if (ret < 0) goto error_unregister; - rcar_gen3_thermal_update_range(tsc); - dev_info(dev, "TSC%d: Loaded %d trip points\n", i, ret); } @@ -471,8 +381,6 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev) goto error_unregister; } - rcar_thermal_irq_set(priv, true); - return 0; error_unregister: @@ -481,15 +389,6 @@ error_unregister: return ret; } -static int __maybe_unused rcar_gen3_thermal_suspend(struct device *dev) -{ - struct rcar_gen3_thermal_priv *priv = dev_get_drvdata(dev); - - rcar_thermal_irq_set(priv, false); - - return 0; -} - static int __maybe_unused rcar_gen3_thermal_resume(struct device *dev) { struct rcar_gen3_thermal_priv *priv = dev_get_drvdata(dev); @@ -499,15 +398,12 @@ static int __maybe_unused rcar_gen3_thermal_resume(struct device *dev) struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i]; priv->thermal_init(tsc); - rcar_gen3_thermal_update_range(tsc); } - rcar_thermal_irq_set(priv, true); - return 0; } -static SIMPLE_DEV_PM_OPS(rcar_gen3_thermal_pm_ops, rcar_gen3_thermal_suspend, +static SIMPLE_DEV_PM_OPS(rcar_gen3_thermal_pm_ops, NULL, rcar_gen3_thermal_resume); static struct platform_driver rcar_gen3_thermal_driver = {