From patchwork Fri Dec 4 02:54:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 11950477 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=-18.7 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,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 0ED98C4361B for ; Fri, 4 Dec 2020 02:56:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BC793224D4 for ; Fri, 4 Dec 2020 02:56:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726707AbgLDC4w (ORCPT ); Thu, 3 Dec 2020 21:56:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43392 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726112AbgLDC4w (ORCPT ); Thu, 3 Dec 2020 21:56:52 -0500 Received: from mail-lf1-x142.google.com (mail-lf1-x142.google.com [IPv6:2a00:1450:4864:20::142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D39CDC08E863 for ; Thu, 3 Dec 2020 18:55:23 -0800 (PST) Received: by mail-lf1-x142.google.com with SMTP id v14so5726923lfo.3 for ; Thu, 03 Dec 2020 18:55:23 -0800 (PST) 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=p+f6Z6buKV8U2SbJ9KEmm/bkKLwctkFzu35gY0EcQM8=; b=X3aIXKmEoVqlZ5Vd3xLDOctT0d+7bULQhpGDGasqA2PfPma2Jhbd0xxSRpsz8QAeV7 sLuuT92Gf0ehRqWt92FaTXo93jHRWt/pJu5b+e69g8xxETNwDCI/j5ib2xovnQrD9yIY gfC3q2aAtA3bnqvXQL95NLm6QxDXeRVT3AKRm4nV8IJeSoGkmxyQPp/Zxi3DHeKuG1c7 uPfqIhz49+ayYg8jwJuJ/EPLr+1qZe9IuCEY+DALR3YuHsuSXc5E5vcPxeb8OiNhjkcD 3y+YiF+S5rASIHXxNB+9ZlnjCMyECJWa3Ir6jrfnXE8JI3gBex+4sPufEpEEeiUYKFze 173w== 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=p+f6Z6buKV8U2SbJ9KEmm/bkKLwctkFzu35gY0EcQM8=; b=gExKizp2H92GSCTJYrogNxRHuUax2uGyIRrqmTA8qV0CcyoiOnhR7P75600SM+x/RW L0aJ+B0nzzB2/1FKd44+ygNM0fyZVVreDNrXZiCN17J1y3iXkxqtKXRiR5OlrwWoldjd d0eWAVLWrDZyQoRFy1m6QOllzlRZzn1AXAdWBTWYCVgBsGm5JWNCmxX9TX+r7ojg0rXm 1oBMfwpdQ5F79mmSOXde3dJ24N7f0hGA6SyuTgoBz4DN+81veZFsG4/366+QLj2DeqIo Lxegz4YZkB+VKSTEh3vuVYWF1KJR7zzs3VikiZQi860ev30hD44Pa/k0oggZ0Lbp6LCF f0RQ== X-Gm-Message-State: AOAM533cHKE8pfJp+rnteEtCo2YAIHzInAuYo83Wq3BuVIIHISzCMF9B JgX8n5qx+mZhH3OgtRPNEVnt9A== X-Google-Smtp-Source: ABdhPJxb+x47RVGxCvkACeWsc+FLR2+rhY85qyvVf/hSHnxej+rHrQidTkLpi1IKJptKhsSctZwPSQ== X-Received: by 2002:a19:fc0f:: with SMTP id a15mr2391800lfi.248.1607050522358; Thu, 03 Dec 2020 18:55:22 -0800 (PST) Received: from eriador.lumag.spb.ru ([188.162.64.117]) by smtp.gmail.com with ESMTPSA id b8sm1131667ljo.68.2020.12.03.18.55.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Dec 2020 18:55:21 -0800 (PST) From: Dmitry Baryshkov To: Andy Gross , Bjorn Andersson , Rob Herring , Zhang Rui , Daniel Lezcano , Amit Kucheria , Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler Cc: linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-iio@vger.kernel.org, Manivannan Sadhasivam , Jishnu Prakash , Jonathan Cameron Subject: [PATCH v10 03/15] iio: adc: qcom-vadc: move several adc5 functions to common file Date: Fri, 4 Dec 2020 05:54:57 +0300 Message-Id: <20201204025509.1075506-4-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201204025509.1075506-1-dmitry.baryshkov@linaro.org> References: <20201204025509.1075506-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org ADC-TM5 driver will make use of several functions from ADC5 driver. Move them to qcom-vadc-common driver. Signed-off-by: Dmitry Baryshkov Reviewed-by: Jonathan Cameron --- drivers/iio/adc/qcom-spmi-adc5.c | 75 +++--------------------------- drivers/iio/adc/qcom-vadc-common.c | 68 ++++++++++++++++++++++++++- drivers/iio/adc/qcom-vadc-common.h | 10 +++- 3 files changed, 82 insertions(+), 71 deletions(-) diff --git a/drivers/iio/adc/qcom-spmi-adc5.c b/drivers/iio/adc/qcom-spmi-adc5.c index c10aa28be70a..c2da8f068b87 100644 --- a/drivers/iio/adc/qcom-spmi-adc5.c +++ b/drivers/iio/adc/qcom-spmi-adc5.c @@ -154,18 +154,6 @@ struct adc5_chip { const struct adc5_data *data; }; -static const struct vadc_prescale_ratio adc5_prescale_ratios[] = { - {.num = 1, .den = 1}, - {.num = 1, .den = 3}, - {.num = 1, .den = 4}, - {.num = 1, .den = 6}, - {.num = 1, .den = 20}, - {.num = 1, .den = 8}, - {.num = 10, .den = 81}, - {.num = 1, .den = 10}, - {.num = 1, .den = 16} -}; - static int adc5_read(struct adc5_chip *adc, u16 offset, u8 *data, int len) { return regmap_bulk_read(adc->regmap, adc->base + offset, data, len); @@ -181,55 +169,6 @@ static int adc5_masked_write(struct adc5_chip *adc, u16 offset, u8 mask, u8 val) return regmap_update_bits(adc->regmap, adc->base + offset, mask, val); } -static int adc5_prescaling_from_dt(u32 num, u32 den) -{ - unsigned int pre; - - for (pre = 0; pre < ARRAY_SIZE(adc5_prescale_ratios); pre++) - if (adc5_prescale_ratios[pre].num == num && - adc5_prescale_ratios[pre].den == den) - break; - - if (pre == ARRAY_SIZE(adc5_prescale_ratios)) - return -EINVAL; - - return pre; -} - -static int adc5_hw_settle_time_from_dt(u32 value, - const unsigned int *hw_settle) -{ - unsigned int i; - - for (i = 0; i < VADC_HW_SETTLE_SAMPLES_MAX; i++) { - if (value == hw_settle[i]) - return i; - } - - return -EINVAL; -} - -static int adc5_avg_samples_from_dt(u32 value) -{ - if (!is_power_of_2(value) || value > ADC5_AVG_SAMPLES_MAX) - return -EINVAL; - - return __ffs(value); -} - -static int adc5_decimation_from_dt(u32 value, - const unsigned int *decimation) -{ - unsigned int i; - - for (i = 0; i < ADC5_DECIMATION_SAMPLES_MAX; i++) { - if (value == decimation[i]) - return i; - } - - return -EINVAL; -} - static int adc5_read_voltage_data(struct adc5_chip *adc, u16 *data) { int ret; @@ -511,7 +450,7 @@ static int adc_read_raw_common(struct iio_dev *indio_dev, return ret; ret = qcom_adc5_hw_scale(prop->scale_fn_type, - &adc5_prescale_ratios[prop->prescale], + prop->prescale, adc->data, adc_code_volt, val); if (ret) @@ -717,7 +656,7 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc, ret = of_property_read_u32(node, "qcom,decimation", &value); if (!ret) { - ret = adc5_decimation_from_dt(value, data->decimation); + ret = qcom_adc5_decimation_from_dt(value, data->decimation); if (ret < 0) { dev_err(dev, "%02x invalid decimation %d\n", chan, value); @@ -730,7 +669,7 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc, ret = of_property_read_u32_array(node, "qcom,pre-scaling", varr, 2); if (!ret) { - ret = adc5_prescaling_from_dt(varr[0], varr[1]); + ret = qcom_adc5_prescaling_from_dt(varr[0], varr[1]); if (ret < 0) { dev_err(dev, "%02x invalid pre-scaling <%d %d>\n", chan, varr[0], varr[1]); @@ -759,11 +698,9 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc, if ((dig_version[0] >= ADC5_HW_SETTLE_DIFF_MINOR && dig_version[1] >= ADC5_HW_SETTLE_DIFF_MAJOR) || adc->data->info == &adc7_info) - ret = adc5_hw_settle_time_from_dt(value, - data->hw_settle_2); + ret = qcom_adc5_hw_settle_time_from_dt(value, data->hw_settle_2); else - ret = adc5_hw_settle_time_from_dt(value, - data->hw_settle_1); + ret = qcom_adc5_hw_settle_time_from_dt(value, data->hw_settle_1); if (ret < 0) { dev_err(dev, "%02x invalid hw-settle-time %d us\n", @@ -777,7 +714,7 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc, ret = of_property_read_u32(node, "qcom,avg-samples", &value); if (!ret) { - ret = adc5_avg_samples_from_dt(value); + ret = qcom_adc5_avg_samples_from_dt(value); if (ret < 0) { dev_err(dev, "%02x invalid avg-samples %d\n", chan, value); diff --git a/drivers/iio/adc/qcom-vadc-common.c b/drivers/iio/adc/qcom-vadc-common.c index 5113aaa6ba67..d11f3343ad52 100644 --- a/drivers/iio/adc/qcom-vadc-common.c +++ b/drivers/iio/adc/qcom-vadc-common.c @@ -278,6 +278,18 @@ static const struct vadc_map_pt adcmap7_100k[] = { { 2420, 130048 } }; +static const struct vadc_prescale_ratio adc5_prescale_ratios[] = { + {.num = 1, .den = 1}, + {.num = 1, .den = 3}, + {.num = 1, .den = 4}, + {.num = 1, .den = 6}, + {.num = 1, .den = 20}, + {.num = 1, .den = 8}, + {.num = 10, .den = 81}, + {.num = 1, .den = 10}, + {.num = 1, .den = 16} +}; + static int qcom_vadc_scale_hw_calib_volt( const struct vadc_prescale_ratio *prescale, const struct adc5_data *data, @@ -647,10 +659,12 @@ int qcom_vadc_scale(enum vadc_scale_fn_type scaletype, EXPORT_SYMBOL(qcom_vadc_scale); int qcom_adc5_hw_scale(enum vadc_scale_fn_type scaletype, - const struct vadc_prescale_ratio *prescale, + unsigned int prescale_ratio, const struct adc5_data *data, u16 adc_code, int *result) { + const struct vadc_prescale_ratio *prescale = &adc5_prescale_ratios[prescale_ratio]; + if (!(scaletype >= SCALE_HW_CALIB_DEFAULT && scaletype < SCALE_HW_CALIB_INVALID)) { pr_err("Invalid scale type %d\n", scaletype); @@ -662,6 +676,58 @@ int qcom_adc5_hw_scale(enum vadc_scale_fn_type scaletype, } EXPORT_SYMBOL(qcom_adc5_hw_scale); +int qcom_adc5_prescaling_from_dt(u32 num, u32 den) +{ + unsigned int pre; + + for (pre = 0; pre < ARRAY_SIZE(adc5_prescale_ratios); pre++) + if (adc5_prescale_ratios[pre].num == num && + adc5_prescale_ratios[pre].den == den) + break; + + if (pre == ARRAY_SIZE(adc5_prescale_ratios)) + return -EINVAL; + + return pre; +} +EXPORT_SYMBOL(qcom_adc5_prescaling_from_dt); + +int qcom_adc5_hw_settle_time_from_dt(u32 value, + const unsigned int *hw_settle) +{ + unsigned int i; + + for (i = 0; i < VADC_HW_SETTLE_SAMPLES_MAX; i++) { + if (value == hw_settle[i]) + return i; + } + + return -EINVAL; +} +EXPORT_SYMBOL(qcom_adc5_hw_settle_time_from_dt); + +int qcom_adc5_avg_samples_from_dt(u32 value) +{ + if (!is_power_of_2(value) || value > ADC5_AVG_SAMPLES_MAX) + return -EINVAL; + + return __ffs(value); +} +EXPORT_SYMBOL(qcom_adc5_avg_samples_from_dt); + +int qcom_adc5_decimation_from_dt(u32 value, const unsigned int *decimation) +{ + unsigned int i; + + for (i = 0; i < ADC5_DECIMATION_SAMPLES_MAX; i++) { + if (value == decimation[i]) + return i; + } + + return -EINVAL; +} +EXPORT_SYMBOL(qcom_adc5_decimation_from_dt); + int qcom_vadc_decimation_from_dt(u32 value) { if (!is_power_of_2(value) || value < VADC_DECIMATION_MIN || diff --git a/drivers/iio/adc/qcom-vadc-common.h b/drivers/iio/adc/qcom-vadc-common.h index 17b2fc4d8bf2..7e5f6428e311 100644 --- a/drivers/iio/adc/qcom-vadc-common.h +++ b/drivers/iio/adc/qcom-vadc-common.h @@ -168,10 +168,18 @@ struct qcom_adc5_scale_type { }; int qcom_adc5_hw_scale(enum vadc_scale_fn_type scaletype, - const struct vadc_prescale_ratio *prescale, + unsigned int prescale_ratio, const struct adc5_data *data, u16 adc_code, int *result_mdec); +int qcom_adc5_prescaling_from_dt(u32 num, u32 den); + +int qcom_adc5_hw_settle_time_from_dt(u32 value, const unsigned int *hw_settle); + +int qcom_adc5_avg_samples_from_dt(u32 value); + +int qcom_adc5_decimation_from_dt(u32 value, const unsigned int *decimation); + int qcom_vadc_decimation_from_dt(u32 value); #endif /* QCOM_VADC_COMMON_H */