From patchwork Wed May 13 09:22:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jishnu Prakash X-Patchwork-Id: 189174 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=-9.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, 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 EAA42C2D0FE for ; Wed, 13 May 2020 09:24:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CC02D2312A for ; Wed, 13 May 2020 09:24:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="cDzatlqg" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732279AbgEMJYA (ORCPT ); Wed, 13 May 2020 05:24:00 -0400 Received: from mail26.static.mailgun.info ([104.130.122.26]:36577 "EHLO mail26.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732437AbgEMJX7 (ORCPT ); Wed, 13 May 2020 05:23:59 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1589361838; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=WUEX6bVcZh9oe8T3NGf1t4ZNiXNzwxOiupI1edWKU+Q=; b=cDzatlqgnfzcj1eq9YLWPfqwXNEPE28/REjjTPlM9NoXPgNT/H+COYWM6dm/4RGBkgfzjX4u LrZc1uP/Iu12kAfuJsCEypfRTY8zRYTyVjBAVPIrqSRSdz34BMJUqEXRBAkwhnMKUE/9YC/d hgsBuSi6NY5hXg4J0VfiS6Mw85o= X-Mailgun-Sending-Ip: 104.130.122.26 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5ebbbcae.7fa2b5f26d50-smtp-out-n05; Wed, 13 May 2020 09:23:58 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 77FABC44795; Wed, 13 May 2020 09:23:58 +0000 (UTC) Received: from jprakash-linux.qualcomm.com (blr-c-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: jprakash) by smtp.codeaurora.org (Postfix) with ESMTPSA id 789FDC433BA; Wed, 13 May 2020 09:23:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 789FDC433BA Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=jprakash@codeaurora.org From: Jishnu Prakash To: agross@kernel.org, bjorn.andersson@linaro.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, mka@chromium.org, linus.walleij@linaro.org, Jonathan.Cameron@huawei.com, andy.shevchenko@gmail.com, amit.kucheria@verdurent.com, smohanad@codeaurora.org, kgunda@codeaurora.org, aghayal@codeaurora.org, Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler , linux-arm-msm@vger.kernel.org, linux-iio@vger.kernel.org Cc: linux-arm-msm-owner@vger.kernel.org, Jishnu Prakash Subject: [PATCH V4 5/5] iio: adc: Clean up ADC code common to PMIC5 and PMIC7 Date: Wed, 13 May 2020 14:52:16 +0530 Message-Id: <1589361736-816-6-git-send-email-jprakash@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1589361736-816-1-git-send-email-jprakash@codeaurora.org> References: <1589361736-816-1-git-send-email-jprakash@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org This commit includes the following changes: Add a common function used for read_raw callback for both PMIC5 and PMIC7 ADCs. Add exit function for ADC. Add info_property under adc_data to more efficiently distinguish PMIC5 and PMIC7 ADCs. Signed-off-by: Jishnu Prakash --- drivers/iio/adc/qcom-spmi-adc5.c | 83 +++++++++++++++++++++----------------- drivers/iio/adc/qcom-vadc-common.h | 1 + 2 files changed, 48 insertions(+), 36 deletions(-) diff --git a/drivers/iio/adc/qcom-spmi-adc5.c b/drivers/iio/adc/qcom-spmi-adc5.c index 974073f..fbe7a39 100644 --- a/drivers/iio/adc/qcom-spmi-adc5.c +++ b/drivers/iio/adc/qcom-spmi-adc5.c @@ -167,8 +167,6 @@ static const struct vadc_prescale_ratio adc5_prescale_ratios[] = { {.num = 1, .den = 16} }; -static const struct adc5_data adc7_data_pmic; - 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); @@ -452,6 +450,13 @@ static int adc7_do_conversion(struct adc5_chip *adc, return ret; } +struct adc_do_conversion { + int (*adc_do_conversion)(struct adc5_chip *adc, + struct adc5_channel_prop *prop, + struct iio_chan_spec const *chan, + u16 *data_volt, u16 *data_cur); +}; + static irqreturn_t adc5_isr(int irq, void *dev_id) { struct adc5_chip *adc = dev_id; @@ -490,9 +495,9 @@ static int adc7_of_xlate(struct iio_dev *indio_dev, return -EINVAL; } -static int adc5_read_raw(struct iio_dev *indio_dev, +static int adc_read_raw_common(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, - long mask) + long mask, struct adc_do_conversion do_conv) { struct adc5_chip *adc = iio_priv(indio_dev); struct adc5_channel_prop *prop; @@ -503,8 +508,9 @@ static int adc5_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_PROCESSED: - ret = adc5_do_conversion(adc, prop, chan, - &adc_code_volt, &adc_code_cur); + ret = do_conv.adc_do_conversion(adc, prop, chan, + &adc_code_volt, &adc_code_cur); + if (ret) return ret; @@ -512,6 +518,7 @@ static int adc5_read_raw(struct iio_dev *indio_dev, &adc5_prescale_ratios[prop->prescale], adc->data, adc_code_volt, val); + if (ret) return ret; @@ -523,38 +530,28 @@ static int adc5_read_raw(struct iio_dev *indio_dev, return 0; } -static int adc7_read_raw(struct iio_dev *indio_dev, +static int adc5_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { - struct adc5_chip *adc = iio_priv(indio_dev); - struct adc5_channel_prop *prop; - u16 adc_code_volt, adc_code_cur; - int ret; - - prop = &adc->chan_props[chan->address]; + struct adc_do_conversion do_conv; - switch (mask) { - case IIO_CHAN_INFO_PROCESSED: - ret = adc7_do_conversion(adc, prop, chan, - &adc_code_volt, &adc_code_cur); - if (ret) - return ret; + do_conv.adc_do_conversion = adc5_do_conversion; - ret = qcom_adc5_hw_scale(prop->scale_fn_type, - &adc5_prescale_ratios[prop->prescale], - adc->data, - adc_code_volt, val); + return adc_read_raw_common(indio_dev, chan, val, val2, + mask, do_conv); +} - if (ret) - return ret; +static int adc7_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, int *val2, + long mask) +{ + struct adc_do_conversion do_conv; - return IIO_VAL_INT; - default: - return -EINVAL; - } + do_conv.adc_do_conversion = adc7_do_conversion; - return 0; + return adc_read_raw_common(indio_dev, chan, val, val2, + mask, do_conv); } static const struct iio_info adc5_info = { @@ -710,7 +707,7 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc, /* virtual channel number = sid << 8 | channel number */ - if (adc->data == &adc7_data_pmic) { + if (adc->data->info == &adc7_info) { sid = chan >> ADC_CHANNEL_OFFSET; chan = chan & ADC_CHANNEL_MASK; } @@ -776,7 +773,7 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc, /* Digital controller >= 5.3 have hw_settle_2 option */ if ((dig_version[0] >= ADC5_HW_SETTLE_DIFF_MINOR && dig_version[1] >= ADC5_HW_SETTLE_DIFF_MAJOR) || - adc->data == &adc7_data_pmic) + adc->data->info == &adc7_info) ret = adc5_hw_settle_time_from_dt(value, data->hw_settle_2); else @@ -826,6 +823,7 @@ static const struct adc5_data adc5_data_pmic = { .full_scale_code_volt = 0x70e4, .full_scale_code_cur = 0x2710, .adc_chans = adc5_chans_pmic, + .info = &adc5_info, .decimation = (unsigned int [ADC5_DECIMATION_SAMPLES_MAX]) {250, 420, 840}, .hw_settle_1 = (unsigned int [VADC_HW_SETTLE_SAMPLES_MAX]) @@ -839,6 +837,7 @@ static const struct adc5_data adc5_data_pmic = { static const struct adc5_data adc7_data_pmic = { .full_scale_code_volt = 0x70e4, .adc_chans = adc7_chans_pmic, + .info = &adc7_info, .decimation = (unsigned int [ADC5_DECIMATION_SAMPLES_MAX]) {85, 340, 1360}, .hw_settle_2 = (unsigned int [VADC_HW_SETTLE_SAMPLES_MAX]) @@ -851,6 +850,7 @@ static const struct adc5_data adc5_data_pmic_rev2 = { .full_scale_code_volt = 0x4000, .full_scale_code_cur = 0x1800, .adc_chans = adc5_chans_rev2, + .info = &adc5_info, .decimation = (unsigned int [ADC5_DECIMATION_SAMPLES_MAX]) {256, 512, 1024}, .hw_settle_1 = (unsigned int [VADC_HW_SETTLE_SAMPLES_MAX]) @@ -965,10 +965,7 @@ static int adc5_probe(struct platform_device *pdev) adc->dev = dev; adc->base = reg; - if (of_device_is_compatible(node, "qcom,spmi-adc7")) - indio_dev->info = &adc7_info; - else - indio_dev->info = &adc5_info; + platform_set_drvdata(pdev, adc); init_completion(&adc->complete); mutex_init(&adc->lock); @@ -979,6 +976,8 @@ static int adc5_probe(struct platform_device *pdev) return ret; } + indio_dev->info = adc->data->info; + irq_eoc = platform_get_irq(pdev, 0); if (irq_eoc < 0) { if (irq_eoc == -EPROBE_DEFER || irq_eoc == -EINVAL) @@ -991,6 +990,8 @@ static int adc5_probe(struct platform_device *pdev) return ret; } + adc->irq_eoc = irq_eoc; + indio_dev->dev.parent = dev; indio_dev->dev.of_node = node; indio_dev->name = pdev->name; @@ -1001,12 +1002,22 @@ static int adc5_probe(struct platform_device *pdev) return devm_iio_device_register(dev, indio_dev); } +static int adc5_exit(struct platform_device *pdev) +{ + struct adc5_chip *adc = platform_get_drvdata(pdev); + + if (adc->irq_eoc >= 0) + disable_irq(adc->irq_eoc); + return 0; +} + static struct platform_driver adc5_driver = { .driver = { .name = "qcom-spmi-adc5.c", .of_match_table = adc5_match_table, }, .probe = adc5_probe, + .remove = adc5_exit, }; module_platform_driver(adc5_driver); diff --git a/drivers/iio/adc/qcom-vadc-common.h b/drivers/iio/adc/qcom-vadc-common.h index 5f9e680..d195e83 100644 --- a/drivers/iio/adc/qcom-vadc-common.h +++ b/drivers/iio/adc/qcom-vadc-common.h @@ -150,6 +150,7 @@ struct adc5_data { const u32 full_scale_code_volt; const u32 full_scale_code_cur; const struct adc5_channels *adc_chans; + const struct iio_info *info; unsigned int *decimation; unsigned int *hw_settle_1; unsigned int *hw_settle_2;