From patchwork Wed Sep 20 17:50:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Wunderlich X-Patchwork-Id: 13393117 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F0B82C04ABA for ; Wed, 20 Sep 2023 17:50:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id:Date :Subject:To:From:Reply-To:Content-Type:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=5QpydNhnuiJDmq+DkprcEXtw+wHEatREQRn/jQOhq8U=; b=IoMsDu+pxUoQTG PDjr/JloUu/O1ibPtHDX6wUZs3R23KjKrt2RFO4WqoL82f4yLttdz1KbpDoN+QVO8LW8toIMVSRGh s0RvGNRUyuIK0gSwgAk+VIP1SD6ENtFkCi2/HLWsGJdHHgMJjknu5+mZRfJQv6K1h5l0+wMGSbQsV gKdRbhAjFGij7FndAaA93J0wwPiPUNtd5eqyetKcEIzG9B6g2Yjhqpo6Q6S8bahcjBLdwXvV0Vx6W 7ru+5TCEwd4ERRGkpSii6J9D+pNnHjED7e25W8IOhZxTMJKrjuuvpPCZYewXNx44CYCmjsBMu0BNl IEnnou5mhYfs8FpnPr8Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qj1LV-003mLo-0q; Wed, 20 Sep 2023 17:50:41 +0000 Received: from mxout1.routing.net ([2a03:2900:1:a::a]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qj1L4-003m9T-1h; Wed, 20 Sep 2023 17:50:17 +0000 Received: from mxbox2.masterlogin.de (unknown [192.168.10.89]) by mxout1.routing.net (Postfix) with ESMTP id 9DD9B4045E; Wed, 20 Sep 2023 17:50:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailerdienst.de; s=20200217; t=1695232210; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=5QpydNhnuiJDmq+DkprcEXtw+wHEatREQRn/jQOhq8U=; b=psadO1KI3iBd80l9ivfW3Xc8VuZT4T3fzQ+BK66uGeSaUavtIWoXIoq+BHtSJYcZ0N9Yj2 O2mOPIkuv4OXumPzOmkAA9Q6GSWmgquA4FOHgOcEoqtFUzUcF3i5XYEQOGUA4DndII9uv3 3HF2l7WMM/u5Ma6yg8ykXBoIkG+CbSU= Received: from frank-G5.. (fttx-pool-217.61.152.105.bambit.de [217.61.152.105]) by mxbox2.masterlogin.de (Postfix) with ESMTPSA id BD9911006A2; Wed, 20 Sep 2023 17:50:09 +0000 (UTC) From: Frank Wunderlich To: linux-mediatek@lists.infradead.org Subject: [PATCH v2 3/4] thermal/drivers/mediatek/lvts_thermal: make coeff configurable Date: Wed, 20 Sep 2023 19:50:00 +0200 Message-Id: <20230920175001.47563-4-linux@fw-web.de> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230920175001.47563-1-linux@fw-web.de> References: <20230920175001.47563-1-linux@fw-web.de> MIME-Version: 1.0 X-Mail-ID: ef1a64eb-da28-41db-a1c7-108f57370c3b X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230920_105014_867782_818B07D4 X-CRM114-Status: GOOD ( 19.67 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Daniel Lezcano , "Rafael J. Wysocki" , linux-pm@vger.kernel.org, Amit Kucheria , Conor Dooley , linux-kernel@vger.kernel.org, Rob Herring , Krzysztof Kozlowski , Matthias Brugger , Zhang Rui , linux-arm-kernel@lists.infradead.org, AngeloGioacchino Del Regno Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Frank Wunderlich The upcoming mt7988 has different temperature coefficients so we cannot use constants in the functions lvts_golden_temp_init, lvts_golden_temp_init and lvts_raw_to_temp anymore. Add a field in the lvts_ctrl pointing to the lvts_data which now contains the soc-specific temperature coefficents. To make the code better readable, rename static int coeff_b to golden_temp_offset, COEFF_A to temp_factor and COEFF_B to temp_offset. Signed-off-by: Frank Wunderlich Reviewed-by: AngeloGioacchino Del Regno --- v2: - rename static int coeff_b to golden_temp_offset - rename coeff.a to temp_factor and coeff.b to temp_offset --- drivers/thermal/mediatek/lvts_thermal.c | 51 ++++++++++++++++--------- 1 file changed, 34 insertions(+), 17 deletions(-) diff --git a/drivers/thermal/mediatek/lvts_thermal.c b/drivers/thermal/mediatek/lvts_thermal.c index effd9b00a424..c2669f405a94 100644 --- a/drivers/thermal/mediatek/lvts_thermal.c +++ b/drivers/thermal/mediatek/lvts_thermal.c @@ -80,8 +80,8 @@ #define LVTS_SENSOR_MAX 4 #define LVTS_GOLDEN_TEMP_MAX 62 #define LVTS_GOLDEN_TEMP_DEFAULT 50 -#define LVTS_COEFF_A -250460 -#define LVTS_COEFF_B 250460 +#define LVTS_COEFF_A_MT8195 -250460 +#define LVTS_COEFF_B_MT8195 250460 #define LVTS_MSR_IMMEDIATE_MODE 0 #define LVTS_MSR_FILTERED_MODE 1 @@ -94,7 +94,7 @@ #define LVTS_MINIMUM_THRESHOLD 20000 static int golden_temp = LVTS_GOLDEN_TEMP_DEFAULT; -static int coeff_b = LVTS_COEFF_B; +static int golden_temp_offset; struct lvts_sensor_data { int dt_id; @@ -112,6 +112,8 @@ struct lvts_ctrl_data { struct lvts_data { const struct lvts_ctrl_data *lvts_ctrl; int num_lvts_ctrl; + int temp_factor; + int temp_offset; }; struct lvts_sensor { @@ -126,6 +128,7 @@ struct lvts_sensor { struct lvts_ctrl { struct lvts_sensor sensors[LVTS_SENSOR_MAX]; + const struct lvts_data *lvts_data; u32 calibration[LVTS_SENSOR_MAX]; u32 hw_tshut_raw_temp; int num_lvts_sensor; @@ -247,21 +250,21 @@ static void lvts_debugfs_exit(struct lvts_domain *lvts_td) { } #endif -static int lvts_raw_to_temp(u32 raw_temp) +static int lvts_raw_to_temp(u32 raw_temp, int temp_factor) { int temperature; - temperature = ((s64)(raw_temp & 0xFFFF) * LVTS_COEFF_A) >> 14; - temperature += coeff_b; + temperature = ((s64)(raw_temp & 0xFFFF) * temp_factor) >> 14; + temperature += golden_temp_offset; return temperature; } -static u32 lvts_temp_to_raw(int temperature) +static u32 lvts_temp_to_raw(int temperature, int temp_factor) { - u32 raw_temp = ((s64)(coeff_b - temperature)) << 14; + u32 raw_temp = ((s64)(golden_temp_offset - temperature)) << 14; - raw_temp = div_s64(raw_temp, -LVTS_COEFF_A); + raw_temp = div_s64(raw_temp, -temp_factor); return raw_temp; } @@ -269,6 +272,9 @@ static u32 lvts_temp_to_raw(int temperature) static int lvts_get_temp(struct thermal_zone_device *tz, int *temp) { struct lvts_sensor *lvts_sensor = thermal_zone_device_priv(tz); + struct lvts_ctrl *lvts_ctrl = container_of(lvts_sensor, struct lvts_ctrl, + sensors[lvts_sensor->id]); + const struct lvts_data *lvts_data = lvts_ctrl->lvts_data; void __iomem *msr = lvts_sensor->msr; u32 value; int rc; @@ -301,7 +307,7 @@ static int lvts_get_temp(struct thermal_zone_device *tz, int *temp) if (rc) return -EAGAIN; - *temp = lvts_raw_to_temp(value & 0xFFFF); + *temp = lvts_raw_to_temp(value & 0xFFFF, lvts_data->temp_factor); return 0; } @@ -348,10 +354,13 @@ static bool lvts_should_update_thresh(struct lvts_ctrl *lvts_ctrl, int high) static int lvts_set_trips(struct thermal_zone_device *tz, int low, int high) { struct lvts_sensor *lvts_sensor = thermal_zone_device_priv(tz); - struct lvts_ctrl *lvts_ctrl = container_of(lvts_sensor, struct lvts_ctrl, sensors[lvts_sensor->id]); + struct lvts_ctrl *lvts_ctrl = container_of(lvts_sensor, struct lvts_ctrl, + sensors[lvts_sensor->id]); + const struct lvts_data *lvts_data = lvts_ctrl->lvts_data; void __iomem *base = lvts_sensor->base; - u32 raw_low = lvts_temp_to_raw(low != -INT_MAX ? low : LVTS_MINIMUM_THRESHOLD); - u32 raw_high = lvts_temp_to_raw(high); + u32 raw_low = lvts_temp_to_raw(low != -INT_MAX ? low : LVTS_MINIMUM_THRESHOLD, + lvts_data->temp_factor); + u32 raw_high = lvts_temp_to_raw(high, lvts_data->temp_factor); bool should_update_thresh; lvts_sensor->low_thresh = low; @@ -692,7 +701,7 @@ static int lvts_calibration_read(struct device *dev, struct lvts_domain *lvts_td return 0; } -static int lvts_golden_temp_init(struct device *dev, u32 *value) +static int lvts_golden_temp_init(struct device *dev, u32 *value, int temp_offset) { u32 gt; @@ -701,7 +710,7 @@ static int lvts_golden_temp_init(struct device *dev, u32 *value) if (gt && gt < LVTS_GOLDEN_TEMP_MAX) golden_temp = gt; - coeff_b = golden_temp * 500 + LVTS_COEFF_B; + golden_temp_offset = golden_temp * 500 + temp_offset; return 0; } @@ -724,7 +733,7 @@ static int lvts_ctrl_init(struct device *dev, struct lvts_domain *lvts_td, * The golden temp information is contained in the first chunk * of efuse data. */ - ret = lvts_golden_temp_init(dev, (u32 *)lvts_td->calib); + ret = lvts_golden_temp_init(dev, (u32 *)lvts_td->calib, lvts_data->temp_offset); if (ret) return ret; @@ -735,6 +744,7 @@ static int lvts_ctrl_init(struct device *dev, struct lvts_domain *lvts_td, for (i = 0; i < lvts_data->num_lvts_ctrl; i++) { lvts_ctrl[i].base = lvts_td->base + lvts_data->lvts_ctrl[i].offset; + lvts_ctrl[i].lvts_data = lvts_data; ret = lvts_sensor_init(dev, &lvts_ctrl[i], &lvts_data->lvts_ctrl[i]); @@ -758,7 +768,8 @@ static int lvts_ctrl_init(struct device *dev, struct lvts_domain *lvts_td, * after initializing the calibration. */ lvts_ctrl[i].hw_tshut_raw_temp = - lvts_temp_to_raw(lvts_data->lvts_ctrl[i].hw_tshut_temp); + lvts_temp_to_raw(lvts_data->lvts_ctrl[i].hw_tshut_temp, + lvts_data->temp_factor); lvts_ctrl[i].low_thresh = INT_MIN; lvts_ctrl[i].high_thresh = INT_MIN; @@ -1223,6 +1234,8 @@ static int lvts_probe(struct platform_device *pdev) if (irq < 0) return irq; + golden_temp_offset = lvts_data->temp_offset; + ret = lvts_domain_init(dev, lvts_td, lvts_data); if (ret) return dev_err_probe(dev, ret, "Failed to initialize the lvts domain\n"); @@ -1338,11 +1351,15 @@ static const struct lvts_ctrl_data mt8195_lvts_ap_data_ctrl[] = { static const struct lvts_data mt8195_lvts_mcu_data = { .lvts_ctrl = mt8195_lvts_mcu_data_ctrl, .num_lvts_ctrl = ARRAY_SIZE(mt8195_lvts_mcu_data_ctrl), + .temp_factor = LVTS_COEFF_A_MT8195, + .temp_offset = LVTS_COEFF_B_MT8195, }; static const struct lvts_data mt8195_lvts_ap_data = { .lvts_ctrl = mt8195_lvts_ap_data_ctrl, .num_lvts_ctrl = ARRAY_SIZE(mt8195_lvts_ap_data_ctrl), + .temp_factor = LVTS_COEFF_A_MT8195, + .temp_offset = LVTS_COEFF_B_MT8195, }; static const struct of_device_id lvts_of_match[] = {