From patchwork Tue Jan 14 19:06:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Florian Fainelli X-Patchwork-Id: 11332779 X-Patchwork-Delegate: daniel.lezcano@linaro.org Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 319E21398 for ; Tue, 14 Jan 2020 19:06:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0676C2467A for ; Tue, 14 Jan 2020 19:06:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="FSwE2eZh" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728835AbgANTG1 (ORCPT ); Tue, 14 Jan 2020 14:06:27 -0500 Received: from mail-pg1-f193.google.com ([209.85.215.193]:44834 "EHLO mail-pg1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728810AbgANTG0 (ORCPT ); Tue, 14 Jan 2020 14:06:26 -0500 Received: by mail-pg1-f193.google.com with SMTP id x7so6806789pgl.11; Tue, 14 Jan 2020 11:06:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Bf0QfjjCsEX6qf2wgGfocQt3AiGtxcihlNrld2yiLRI=; b=FSwE2eZhaM7nJ7cTgrrBAV6iKrrO/hGwchd/X7aWSYE2ukOUFyVX655ZvOD15Z+Hmp T91KugPoI8ZJ/ViKtd5gHA74xwYojhutrSgCUx31ZArAOd37a/2iwEw+blOhxOg1+RIZ pSAuHklHQku2gfAbnAN0TomOhoMfbK26PxKtLk0bDEVqkGXc2SS7CKiD2h6NQDC6XXk1 C4FsSEgU3pq9bMfDV0Ii4eHpAVI03rm/xMNWEqj8jLLtZ5eNPOOw3pLWvL/elZ1OSic1 cz5Br4dWgqteE8oBdldD2wWlfJzsS1IiEihJfp2cQUaOizLplbRvaGSJPeo4AE+/e9Oo M5wQ== 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; bh=Bf0QfjjCsEX6qf2wgGfocQt3AiGtxcihlNrld2yiLRI=; b=Ak2HE6O2dEwmmBC7NuZkIB/OGCqXKFptwyaN2BL0U1I+NdS6Bdo9Uto1Vxni7zHUJC QiR41iWPV+dV+dJTfe03igNQ1R179J/o7/CxtZSKG4W/z2arL7bwcjYJLhXqAM4BTWVu +VmbzqGt1L61DLAKQ/P7npNiGJACbHHyPjxyXd6ET7cyWVNvZ2sQIhnPNIJnrT6OYe20 sguz7ghCbRFFcBj0Qr91PNpRxWeHhpFpvlXbedUtTkr8E96GAZuEvmURPApIluckrC3X 8wbX1XeW4h1KCy20LUSt0UUn+xp8MoULB272orvfrRVDEMIfK5r4ZQOeBGp9e8Yv3AkE EuPQ== X-Gm-Message-State: APjAAAWVPwEIOaYFikt0fs9nYWFa6FYJQMKdcMB5HoLl8Bge6G+4Oz4C 7fETVQqEWS/sA64YxyFUK0yJwFpq X-Google-Smtp-Source: APXvYqynKjbTkRhlt7ZhyxsnDVhelk0OAduVnKYo4JAVKCKxwfB13+aOcP4ENHL5soycSATHTCi7Aw== X-Received: by 2002:a63:d00f:: with SMTP id z15mr28363045pgf.143.1579028785296; Tue, 14 Jan 2020 11:06:25 -0800 (PST) Received: from fainelli-desktop.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id a195sm19284528pfa.120.2020.01.14.11.06.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Jan 2020 11:06:24 -0800 (PST) From: Florian Fainelli To: linux-kernel@vger.kernel.org, daniel.lezcano@linaro.org Cc: Florian Fainelli , Markus Mayer , bcm-kernel-feedback-list@broadcom.com (maintainer:BROADCOM STB AVS TMON DRIVER), Zhang Rui , Amit Kucheria , Rob Herring , Mark Rutland , linux-pm@vger.kernel.org (open list:BROADCOM STB AVS TMON DRIVER), devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS), linux-arm-kernel@lists.infradead.org (moderated list:BROADCOM BCM7XXX ARM ARCHITECTURE) Subject: [PATCH v3 2/6] thermal: brcmstb_thermal: Prepare to support a different process Date: Tue, 14 Jan 2020 11:06:03 -0800 Message-Id: <20200114190607.29339-3-f.fainelli@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200114190607.29339-1-f.fainelli@gmail.com> References: <20200114190607.29339-1-f.fainelli@gmail.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org The driver is currently assuming that it is operating with a 28nm process chip, which has a specific formula to convert temperature to a code and vice versa. Update the code to support providing two key values: offset and multiplier to derive the correct formulas. Signed-off-by: Florian Fainelli Reviewed-by: Amit Kucheria --- drivers/thermal/broadcom/brcmstb_thermal.c | 47 +++++++++++++++------- 1 file changed, 33 insertions(+), 14 deletions(-) diff --git a/drivers/thermal/broadcom/brcmstb_thermal.c b/drivers/thermal/broadcom/brcmstb_thermal.c index 680f1a070606..2d555e7b884a 100644 --- a/drivers/thermal/broadcom/brcmstb_thermal.c +++ b/drivers/thermal/broadcom/brcmstb_thermal.c @@ -102,18 +102,27 @@ static struct avs_tmon_trip avs_tmon_trips[] = { }, }; +struct brcmstb_thermal_params { + unsigned int offset; + unsigned int mult; +}; + struct brcmstb_thermal_priv { void __iomem *tmon_base; struct device *dev; struct thermal_zone_device *thermal; + /* Process specific thermal parameters used for calculations */ + const struct brcmstb_thermal_params *temp_params; }; /* Convert a HW code to a temperature reading (millidegree celsius) */ -static inline int avs_tmon_code_to_temp(struct thermal_zone_device *tz, +static inline int avs_tmon_code_to_temp(struct brcmstb_thermal_priv *priv, u32 code) { - return (AVS_TMON_TEMP_OFFSET - - (int)((code & AVS_TMON_TEMP_MAX) * AVS_TMON_TEMP_SLOPE)); + int offset = priv->temp_params->offset; + int mult = priv->temp_params->mult; + + return (offset - (int)((code & AVS_TMON_TEMP_MASK) * mult)); } /* @@ -122,21 +131,22 @@ static inline int avs_tmon_code_to_temp(struct thermal_zone_device *tz, * @temp: temperature to convert * @low: if true, round toward the low side */ -static inline u32 avs_tmon_temp_to_code(struct thermal_zone_device *tz, +static inline u32 avs_tmon_temp_to_code(struct brcmstb_thermal_priv *priv, int temp, bool low) { + int offset = priv->temp_params->offset; + int mult = priv->temp_params->mult; + if (temp < AVS_TMON_TEMP_MIN) return AVS_TMON_TEMP_MAX; /* Maximum code value */ - if (temp >= AVS_TMON_TEMP_OFFSET) + if (temp >= offset) return 0; /* Minimum code value */ if (low) - return (u32)(DIV_ROUND_UP(AVS_TMON_TEMP_OFFSET - temp, - AVS_TMON_TEMP_SLOPE)); + return (u32)(DIV_ROUND_UP(offset - temp, mult)); else - return (u32)((AVS_TMON_TEMP_OFFSET - temp) / - AVS_TMON_TEMP_SLOPE); + return (u32)((offset - temp) / mult); } static int brcmstb_get_temp(void *data, int *temp) @@ -154,7 +164,7 @@ static int brcmstb_get_temp(void *data, int *temp) val = (val & AVS_TMON_STATUS_data_msk) >> AVS_TMON_STATUS_data_shift; - t = avs_tmon_code_to_temp(priv->thermal, val); + t = avs_tmon_code_to_temp(priv, val); if (t < 0) *temp = 0; else @@ -188,7 +198,7 @@ static int avs_tmon_get_trip_temp(struct brcmstb_thermal_priv *priv, val &= trip->reg_msk; val >>= trip->reg_shift; - return avs_tmon_code_to_temp(priv->thermal, val); + return avs_tmon_code_to_temp(priv, val); } static void avs_tmon_set_trip_temp(struct brcmstb_thermal_priv *priv, @@ -201,7 +211,7 @@ static void avs_tmon_set_trip_temp(struct brcmstb_thermal_priv *priv, dev_dbg(priv->dev, "set temp %d to %d\n", type, temp); /* round toward low temp for the low interrupt */ - val = avs_tmon_temp_to_code(priv->thermal, temp, + val = avs_tmon_temp_to_code(priv, temp, type == TMON_TRIP_TYPE_LOW); val <<= trip->reg_shift; @@ -218,7 +228,7 @@ static int avs_tmon_get_intr_temp(struct brcmstb_thermal_priv *priv) u32 val; val = __raw_readl(priv->tmon_base + AVS_TMON_TEMP_INT_CODE); - return avs_tmon_code_to_temp(priv->thermal, val); + return avs_tmon_code_to_temp(priv, val); } static irqreturn_t brcmstb_tmon_irq_thread(int irq, void *data) @@ -282,8 +292,13 @@ static const struct thermal_zone_of_device_ops of_ops = { .set_trips = brcmstb_set_trips, }; +static const struct brcmstb_thermal_params brcmstb_28nm_params = { + .offset = 410040, + .mult = 487, +}; + static const struct of_device_id brcmstb_thermal_id_table[] = { - { .compatible = "brcm,avs-tmon" }, + { .compatible = "brcm,avs-tmon", .data = &brcmstb_28nm_params }, {}, }; MODULE_DEVICE_TABLE(of, brcmstb_thermal_id_table); @@ -299,6 +314,10 @@ static int brcmstb_thermal_probe(struct platform_device *pdev) if (!priv) return -ENOMEM; + priv->temp_params = of_device_get_match_data(&pdev->dev); + if (!priv->temp_params) + return -EINVAL; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); priv->tmon_base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(priv->tmon_base))