From patchwork Wed Aug 25 15:25:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miquel Raynal X-Patchwork-Id: 503042 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 08183C25AED for ; Wed, 25 Aug 2021 15:35:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F16CF61106 for ; Wed, 25 Aug 2021 15:35:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241998AbhHYPfq (ORCPT ); Wed, 25 Aug 2021 11:35:46 -0400 Received: from mslow1.mail.gandi.net ([217.70.178.240]:43307 "EHLO mslow1.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241937AbhHYPfi (ORCPT ); Wed, 25 Aug 2021 11:35:38 -0400 Received: from relay6-d.mail.gandi.net (unknown [217.70.183.198]) by mslow1.mail.gandi.net (Postfix) with ESMTP id BFF84CE070; Wed, 25 Aug 2021 15:26:51 +0000 (UTC) Received: (Authenticated sender: miquel.raynal@bootlin.com) by relay6-d.mail.gandi.net (Postfix) with ESMTPSA id 4F5D9C0013; Wed, 25 Aug 2021 15:26:28 +0000 (UTC) From: Miquel Raynal To: Jonathan Cameron , Lars-Peter Clausen , Peter Meerwald-Stadler , Rob Herring , Lee Jones , bcousson@baylibre.com, Tony Lindgren , Tero Kristo , Michael Turquette , Stephen Boyd Cc: Thomas Petazzoni , "Ryan J . Barnett" , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-input@vger.kernel.org, linux-omap@vger.kernel.org, linux-clk@vger.kernel.org, Miquel Raynal Subject: [PATCH 33/40] iio: adc: ti_am335x_adc: Gather the checks on the delays Date: Wed, 25 Aug 2021 17:25:11 +0200 Message-Id: <20210825152518.379386-34-miquel.raynal@bootlin.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210825152518.379386-1-miquel.raynal@bootlin.com> References: <20210825152518.379386-1-miquel.raynal@bootlin.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Move the checks over the delays provided in the device tree to the location where these values are read to clarify where they come from. There are no functional changes besides the device structure used to display the warnings: let's use the ADC instead of the MFD device. Signed-off-by: Miquel Raynal --- drivers/iio/adc/ti_am335x_adc.c | 47 +++++++++++++++++++-------------- 1 file changed, 27 insertions(+), 20 deletions(-) diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c index 00bbf557e86c..4eaf5b031707 100644 --- a/drivers/iio/adc/ti_am335x_adc.c +++ b/drivers/iio/adc/ti_am335x_adc.c @@ -97,7 +97,6 @@ static u32 get_adc_step_bit(struct tiadc_device *adc_dev, int chan) static void tiadc_step_config(struct iio_dev *indio_dev) { struct tiadc_device *adc_dev = iio_priv(indio_dev); - struct device *dev = adc_dev->mfd_tscadc->dev; unsigned int stepconfig; int i, steps = 0; @@ -115,12 +114,6 @@ static void tiadc_step_config(struct iio_dev *indio_dev) chan = adc_dev->channel_line[i]; - if (adc_dev->step_avg[i] > STEPCONFIG_AVG_16) { - dev_warn(dev, "chan %d step_avg truncating to %d\n", - chan, STEPCONFIG_AVG_16); - adc_dev->step_avg[i] = STEPCONFIG_AVG_16; - } - if (adc_dev->step_avg[i]) stepconfig = STEPCONFIG_AVG(ffs(adc_dev->step_avg[i]) - 1) | STEPCONFIG_FIFO1; @@ -135,18 +128,6 @@ static void tiadc_step_config(struct iio_dev *indio_dev) STEPCONFIG_INM_ADCREFM | STEPCONFIG_RFP_VREFP | STEPCONFIG_RFM_VREFN); - if (adc_dev->open_delay[i] > STEPDELAY_OPEN_MASK) { - dev_warn(dev, "chan %d open delay truncating to 0x3FFFF\n", - chan); - adc_dev->open_delay[i] = STEPDELAY_OPEN_MASK; - } - - if (adc_dev->sample_delay[i] > 0xFF) { - dev_warn(dev, "chan %d sample delay truncating to 0xFF\n", - chan); - adc_dev->sample_delay[i] = 0xFF; - } - tiadc_writel(adc_dev, REG_STEPDELAY(steps), STEPDELAY_OPEN(adc_dev->open_delay[i]) | STEPDELAY_SAMPLE(adc_dev->sample_delay[i])); @@ -552,6 +533,7 @@ static int tiadc_parse_dt(struct platform_device *pdev, const __be32 *cur; int channels = 0; u32 val; + int i; of_property_for_each_u32(node, "ti,adc-channels", prop, cur, val) { adc_dev->channel_line[channels] = val; @@ -564,6 +546,8 @@ static int tiadc_parse_dt(struct platform_device *pdev, channels++; } + adc_dev->channels = channels; + of_property_read_u32_array(node, "ti,chan-step-avg", adc_dev->step_avg, channels); of_property_read_u32_array(node, "ti,chan-step-opendelay", @@ -571,7 +555,30 @@ static int tiadc_parse_dt(struct platform_device *pdev, of_property_read_u32_array(node, "ti,chan-step-sampledelay", adc_dev->sample_delay, channels); - adc_dev->channels = channels; + for (i = 0; i < adc_dev->channels; i++) { + int chan; + + chan = adc_dev->channel_line[i]; + + if (adc_dev->step_avg[i] > STEPCONFIG_AVG_16) { + dev_warn(&pdev->dev, "chan %d step_avg truncating to %d\n", + chan, STEPCONFIG_AVG_16); + adc_dev->step_avg[i] = STEPCONFIG_AVG_16; + } + + if (adc_dev->open_delay[i] > STEPDELAY_OPEN_MASK) { + dev_warn(&pdev->dev, "chan %d open delay truncating to 0x3FFFF\n", + chan); + adc_dev->open_delay[i] = STEPDELAY_OPEN_MASK; + } + + if (adc_dev->sample_delay[i] > 0xFF) { + dev_warn(&pdev->dev, "chan %d sample delay truncating to 0xFF\n", + chan); + adc_dev->sample_delay[i] = 0xFF; + } + } + return 0; }