From patchwork Sun Jan 1 19:40:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 13086439 X-Patchwork-Delegate: daniel.lezcano@linaro.org 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 34CAEC46467 for ; Sun, 1 Jan 2023 19:41:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231594AbjAATkw (ORCPT ); Sun, 1 Jan 2023 14:40:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44194 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231330AbjAATks (ORCPT ); Sun, 1 Jan 2023 14:40:48 -0500 Received: from mail-lf1-x12c.google.com (mail-lf1-x12c.google.com [IPv6:2a00:1450:4864:20::12c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B8274201 for ; Sun, 1 Jan 2023 11:40:45 -0800 (PST) Received: by mail-lf1-x12c.google.com with SMTP id bq39so31102731lfb.0 for ; Sun, 01 Jan 2023 11:40:45 -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=gHjZmf7mcbCvS4sfr3HDX2QhshNM+liep6o9d5Gez4Q=; b=WuyYP4AJWHVtGg/8EqEI2FUctA9R+fDknN4hv20H99was2UfHQxwuIA6jUWFeAm4Us yxfMgj/foetkEGbsUZ2fGMPpYeBt7TgwV9BgZYMG+VflqXGnpquuss8JZFgY4/xbuPYl d6jXNh7H02Me3jTQnlIAHBAjdZg8AicfilgbGB0Ix4g3g0vkxjz/ORdjAPQgOaXIWgPZ v5d3rmitIkkVGjIunULlZ67T/Fs5GOU9mIt03RZemVMC+aPpjuw+swdSZ154xqQI41D3 zedhevEajSbeWEax+d5OJ88okgqnHLj+BWT6p3mJatpiYx2ot+gK5m7ZxNHg8gDo7MRL QBfw== 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=gHjZmf7mcbCvS4sfr3HDX2QhshNM+liep6o9d5Gez4Q=; b=WQB+oyYAUFCltUw4EP57OYLPdprnk3O/IgjDXnhlcJLjuF6UXGCN0GuMlYU5IIMqyN I2G0Q8ES1DKTlRkfbKP8ZLyCvGuMZTcBZcFhijGIyQH5Du554Z1jRCO6EOVWYAIGik2E /pCZ3/F77TlpXZ0sobW3jw6LBzCge2xn0h/gEWgMUpqo2CwsEYQB0E5eRACoNrWn6sUq YAr/UbnCL6KI0dQ9wX0r3zQGduo1y3X+S1m6thQYoXAE5J5e2d5T1bzhnX2uTKob3/BN 7EworhQZWkNgTfvacGvJvUjPtdJJfd+UGMd9SRIxvZeer2t3pkeBek144dD9U2B3EiIR byhg== X-Gm-Message-State: AFqh2ko7QSE3UPrcvsYNH3v8nIRrJBZdHISmmDqk2ZnbePCVaijMWO3V WDdY+vhb2obBqztGCMMuPTrGbA== X-Google-Smtp-Source: AMrXdXstpZAAPDA1IMazY41mtdHJNLnYrGezfGCitCWVT+BfphioG1So8fvUsyXRTsk5j04CCEK+FA== X-Received: by 2002:a05:6512:16a8:b0:4b5:a70f:8efc with SMTP id bu40-20020a05651216a800b004b5a70f8efcmr17481416lfb.64.1672602043880; Sun, 01 Jan 2023 11:40:43 -0800 (PST) Received: from eriador.lan (dzccz6yyyyyyyyyyybcwt-3.rev.dnainternet.fi. [2001:14ba:a085:4d00::8a5]) by smtp.gmail.com with ESMTPSA id w11-20020a056512098b00b004a100c21eaesm4228013lft.97.2023.01.01.11.40.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 01 Jan 2023 11:40:43 -0800 (PST) From: Dmitry Baryshkov To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Amit Kucheria , Thara Gopinath , "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui Cc: "Bryan O'Donoghue" , Shawn Guo , linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH v6 09/20] thermal/drivers/tsens: Support using nvmem cells for calibration data Date: Sun, 1 Jan 2023 21:40:23 +0200 Message-Id: <20230101194034.831222-10-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230101194034.831222-1-dmitry.baryshkov@linaro.org> References: <20230101194034.831222-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add a unified function using nvmem cells for parsing the calibration data rather than parsing the calibration blob manually. Signed-off-by: Dmitry Baryshkov --- drivers/thermal/qcom/tsens-v0_1.c | 15 ++++++ drivers/thermal/qcom/tsens-v1.c | 11 ++++- drivers/thermal/qcom/tsens.c | 76 +++++++++++++++++++++++++++++++ drivers/thermal/qcom/tsens.h | 5 ++ 4 files changed, 106 insertions(+), 1 deletion(-) diff --git a/drivers/thermal/qcom/tsens-v0_1.c b/drivers/thermal/qcom/tsens-v0_1.c index 579028ea48f4..6c9e491f9559 100644 --- a/drivers/thermal/qcom/tsens-v0_1.c +++ b/drivers/thermal/qcom/tsens-v0_1.c @@ -229,6 +229,11 @@ static int calibrate_8916(struct tsens_priv *priv) u32 p1[5], p2[5]; int mode = 0; u32 *qfprom_cdata, *qfprom_csel; + int ret; + + ret = tsens_calibrate_nvmem(priv, 3); + if (!ret) + return 0; qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib"); if (IS_ERR(qfprom_cdata)) @@ -286,6 +291,11 @@ static int calibrate_8939(struct tsens_priv *priv) int mode = 0; u32 *qfprom_cdata; u32 cdata[4]; + int ret; + + ret = tsens_calibrate_common(priv); + if (!ret) + return 0; qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib"); if (IS_ERR(qfprom_cdata)) @@ -486,6 +496,11 @@ static int calibrate_9607(struct tsens_priv *priv) u32 p1[5], p2[5]; int mode = 0; u32 *qfprom_cdata; + int ret; + + ret = tsens_calibrate_common(priv); + if (!ret) + return 0; qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib"); if (IS_ERR(qfprom_cdata)) diff --git a/drivers/thermal/qcom/tsens-v1.c b/drivers/thermal/qcom/tsens-v1.c index 83c2853546d0..5bba75a845c5 100644 --- a/drivers/thermal/qcom/tsens-v1.c +++ b/drivers/thermal/qcom/tsens-v1.c @@ -143,7 +143,11 @@ static int calibrate_v1(struct tsens_priv *priv) u32 p1[10], p2[10]; u32 mode = 0, lsb = 0, msb = 0; u32 *qfprom_cdata; - int i; + int i, ret; + + ret = tsens_calibrate_common(priv); + if (!ret) + return 0; qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib"); if (IS_ERR(qfprom_cdata)) @@ -209,6 +213,11 @@ static int calibrate_8976(struct tsens_priv *priv) u32 p1[11], p2[11]; int mode = 0, tmp = 0; u32 *qfprom_cdata; + int ret; + + ret = tsens_calibrate_common(priv); + if (!ret) + return 0; qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib"); if (IS_ERR(qfprom_cdata)) diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c index b191e19df93d..ce568a68de4a 100644 --- a/drivers/thermal/qcom/tsens.c +++ b/drivers/thermal/qcom/tsens.c @@ -70,6 +70,82 @@ char *qfprom_read(struct device *dev, const char *cname) return ret; } +int tsens_calibrate_nvmem(struct tsens_priv *priv, int shift) +{ + u32 mode; + u32 base1, base2; + u32 p1[MAX_SENSORS], p2[MAX_SENSORS]; + char name[] = "sXX_pY"; /* s10_p1 */ + int i, ret; + + if (priv->num_sensors > MAX_SENSORS) + return -EINVAL; + + ret = nvmem_cell_read_variable_le_u32(priv->dev, "mode", &mode); + if (ret == -ENOENT) + dev_warn(priv->dev, "Please migrate to separate nvmem cells for calibration data\n"); + if (ret < 0) + return ret; + + dev_dbg(priv->dev, "calibration mode is %d\n", mode); + + ret = nvmem_cell_read_variable_le_u32(priv->dev, "base1", &base1); + if (ret < 0) + return ret; + + ret = nvmem_cell_read_variable_le_u32(priv->dev, "base2", &base2); + if (ret < 0) + return ret; + + for (i = 0; i < priv->num_sensors; i++) { + ret = snprintf(name, sizeof(name), "s%d_p1", priv->sensor[i].hw_id); + if (ret < 0) + return ret; + + ret = nvmem_cell_read_variable_le_u32(priv->dev, name, &p1[i]); + if (ret) + return ret; + + ret = snprintf(name, sizeof(name), "s%d_p2", priv->sensor[i].hw_id); + if (ret < 0) + return ret; + + ret = nvmem_cell_read_variable_le_u32(priv->dev, name, &p2[i]); + if (ret) + return ret; + } + + switch (mode) { + case ONE_PT_CALIB: + for (i = 0; i < priv->num_sensors; i++) + p1[i] = p1[i] + (base1 << shift); + break; + case TWO_PT_CALIB: + for (i = 0; i < priv->num_sensors; i++) + p2[i] = (p2[i] + base2) << shift; + fallthrough; + case ONE_PT_CALIB2: + for (i = 0; i < priv->num_sensors; i++) + p1[i] = (p1[i] + base1) << shift; + break; + default: + dev_dbg(priv->dev, "calibrationless mode\n"); + for (i = 0; i < priv->num_sensors; i++) { + p1[i] = 500; + p2[i] = 780; + } + } + + compute_intercept_slope(priv, p1, p2, mode); + + return 0; +} + +int tsens_calibrate_common(struct tsens_priv *priv) +{ + return tsens_calibrate_nvmem(priv, 2); +} + /* * Use this function on devices where slope and offset calculations * depend on calibration data read from qfprom. On others the slope diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h index 7dd5fc246894..645ae02438fa 100644 --- a/drivers/thermal/qcom/tsens.h +++ b/drivers/thermal/qcom/tsens.h @@ -6,6 +6,7 @@ #ifndef __QCOM_TSENS_H__ #define __QCOM_TSENS_H__ +#define NO_PT_CALIB 0x0 #define ONE_PT_CALIB 0x1 #define ONE_PT_CALIB2 0x2 #define TWO_PT_CALIB 0x3 @@ -17,6 +18,8 @@ #define THRESHOLD_MAX_ADC_CODE 0x3ff #define THRESHOLD_MIN_ADC_CODE 0x0 +#define MAX_SENSORS 16 + #include #include #include @@ -582,6 +585,8 @@ struct tsens_priv { }; char *qfprom_read(struct device *dev, const char *cname); +int tsens_calibrate_nvmem(struct tsens_priv *priv, int shift); +int tsens_calibrate_common(struct tsens_priv *priv); void compute_intercept_slope(struct tsens_priv *priv, u32 *pt1, u32 *pt2, u32 mode); int init_common(struct tsens_priv *priv); int get_temp_tsens_valid(const struct tsens_sensor *s, int *temp);