From patchwork Fri Jun 3 09:59:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 12868904 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 52764C43334 for ; Fri, 3 Jun 2022 10:00:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=+86STw0mb1b8YJV1e3wLrgplheLVCrsPpFlvpp2SwGg=; b=2wMzSDfV2ToyaE ualsgJVfQd0vyq9P2d9KXKTJ5fbAzYpduxatnnZIabau4Z2wqRsteSeN97qT2Nlu+lLY2OKr6n7Q+ SCPjPkTVsYlP+w27iWeXh/yHAssaTZXq+N+Ixkb6N+cvayoRbQ60TkovFOZxtp/qY/hGrKhEFeUPl lecAG2qaa647hvNtP+k7nlj6Q/QlCEvZ6WQbS+MWo/LxG8rMRjEw7r1i5c/89DarIh/L57/kU2w6Z XMAMigOE3kX4PHvQVPoSUbBekzSK90JB7/sut7oKYqwssc+TW3v5jPbZMDA5CLOJoFrPuwVfXnUN3 J/UX4sfCLppGGfo0bSWA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nx46Q-006wAa-07; Fri, 03 Jun 2022 10:00:22 +0000 Received: from mga17.intel.com ([192.55.52.151]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nx46C-006w3K-H8; Fri, 03 Jun 2022 10:00:11 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1654250408; x=1685786408; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=dmizgC/FFx3wjR+UyFpJTMRWLIYX1iNBjHo2LkhU22s=; b=HfSlYO3LXpZZu76GkNx7q2aB+ReIVi1Cv5zeVcvlD7LhWBpcCIlGBfI7 JMbYDwtHqrMvcERDfVZ7jnB5OQsEv4yuY+OvLJ/ZqIlDD7JDS6ZLvDTh9 75/DAYBWv1w3aOAlj+n0WP27msZLdxGokmkFCoihJf1bVUOwy5UrHJYn/ DU16qU6KrNd4aODBqK9/L3MsZ03G+CGSJOmHcR6BU2cZuiEX7sd+R1564 E3LKALyko1TNM0ykafVrHajUsfe2Rol9yGt8G6IPjEmH8MerxOub0rdtH eZwldr0D8EnRz035YJn6v2OEzKmk5F454xzWLSupOLe3pNvb7csOd+t2/ g==; X-IronPort-AV: E=McAfee;i="6400,9594,10366"; a="256695933" X-IronPort-AV: E=Sophos;i="5.91,274,1647327600"; d="scan'208";a="256695933" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Jun 2022 03:00:07 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,274,1647327600"; d="scan'208";a="721691989" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 03 Jun 2022 03:00:04 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 12387F8; Fri, 3 Jun 2022 13:00:06 +0300 (EEST) From: Andy Shevchenko To: Andy Shevchenko , linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Jonathan Cameron , Lars-Peter Clausen , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl Subject: [PATCH v3 1/6] iio: adc: meson_saradc: Don't attach managed resource to IIO device object Date: Fri, 3 Jun 2022 12:59:59 +0300 Message-Id: <20220603100004.70336-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220603_030008_618781_0FEC6DC6 X-CRM114-Status: GOOD ( 12.97 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org It feels wrong and actually inconsistent to attach managed resources to the IIO device object, which is child of the physical device object. The rest of the ->probe() calls do that against physical device. Resolve this by reassigning managed resources to the physical device object. Fixes: 3adbf3427330 ("iio: adc: add a driver for the SAR ADC found in Amlogic Meson SoCs") Suggested-by: Lars-Peter Clausen Signed-off-by: Andy Shevchenko Reviewed-by: Martin Blumenstingl --- v3: new fix-patch drivers/iio/adc/meson_saradc.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c index 62cc6fb0ef85..4fe6b997cd03 100644 --- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -650,11 +650,11 @@ static int meson_sar_adc_clk_init(struct iio_dev *indio_dev, void __iomem *base) { struct meson_sar_adc_priv *priv = iio_priv(indio_dev); + struct device *dev = indio_dev->dev.parent; struct clk_init_data init; const char *clk_parents[1]; - init.name = devm_kasprintf(&indio_dev->dev, GFP_KERNEL, "%s#adc_div", - dev_name(indio_dev->dev.parent)); + init.name = devm_kasprintf(dev, GFP_KERNEL, "%s#adc_div", dev_name(dev)); if (!init.name) return -ENOMEM; @@ -670,13 +670,11 @@ static int meson_sar_adc_clk_init(struct iio_dev *indio_dev, priv->clk_div.hw.init = &init; priv->clk_div.flags = 0; - priv->adc_div_clk = devm_clk_register(&indio_dev->dev, - &priv->clk_div.hw); + priv->adc_div_clk = devm_clk_register(dev, &priv->clk_div.hw); if (WARN_ON(IS_ERR(priv->adc_div_clk))) return PTR_ERR(priv->adc_div_clk); - init.name = devm_kasprintf(&indio_dev->dev, GFP_KERNEL, "%s#adc_en", - dev_name(indio_dev->dev.parent)); + init.name = devm_kasprintf(dev, GFP_KERNEL, "%s#adc_en", dev_name(dev)); if (!init.name) return -ENOMEM; @@ -690,7 +688,7 @@ static int meson_sar_adc_clk_init(struct iio_dev *indio_dev, priv->clk_gate.bit_idx = __ffs(MESON_SAR_ADC_REG3_CLK_EN); priv->clk_gate.hw.init = &init; - priv->adc_clk = devm_clk_register(&indio_dev->dev, &priv->clk_gate.hw); + priv->adc_clk = devm_clk_register(dev, &priv->clk_gate.hw); if (WARN_ON(IS_ERR(priv->adc_clk))) return PTR_ERR(priv->adc_clk); From patchwork Fri Jun 3 10:00:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 12868903 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 F05F5C433EF for ; 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03 Jun 2022 03:00:07 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,274,1647327600"; d="scan'208";a="824667302" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga006.fm.intel.com with ESMTP; 03 Jun 2022 03:00:04 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 2179DF1; Fri, 3 Jun 2022 13:00:07 +0300 (EEST) From: Andy Shevchenko To: Andy Shevchenko , linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Jonathan Cameron , Lars-Peter Clausen , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl Subject: [PATCH v3 2/6] iio: adc: meson_saradc: Align messages to be with physical device prefix Date: Fri, 3 Jun 2022 13:00:00 +0300 Message-Id: <20220603100004.70336-2-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220603100004.70336-1-andriy.shevchenko@linux.intel.com> References: <20220603100004.70336-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220603_030008_544525_84704C10 X-CRM114-Status: GOOD ( 10.14 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org Align messages to be printed with the physical device prefix as it's done everywhere else in this driver. Signed-off-by: Andy Shevchenko Reviewed-by: Martin Blumenstingl --- v3: new patch (inspired by previous change) drivers/iio/adc/meson_saradc.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c index 4fe6b997cd03..658047370db0 100644 --- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -345,6 +345,7 @@ static int meson_sar_adc_read_raw_sample(struct iio_dev *indio_dev, int *val) { struct meson_sar_adc_priv *priv = iio_priv(indio_dev); + struct device *dev = indio_dev->dev.parent; int regval, fifo_chan, fifo_val, count; if (!wait_for_completion_timeout(&priv->done, @@ -353,16 +354,14 @@ static int meson_sar_adc_read_raw_sample(struct iio_dev *indio_dev, count = meson_sar_adc_get_fifo_count(indio_dev); if (count != 1) { - dev_err(&indio_dev->dev, - "ADC FIFO has %d element(s) instead of one\n", count); + dev_err(dev, "ADC FIFO has %d element(s) instead of one\n", count); return -EINVAL; } regmap_read(priv->regmap, MESON_SAR_ADC_FIFO_RD, ®val); fifo_chan = FIELD_GET(MESON_SAR_ADC_FIFO_RD_CHAN_ID_MASK, regval); if (fifo_chan != chan->address) { - dev_err(&indio_dev->dev, - "ADC FIFO entry belongs to channel %d instead of %lu\n", + dev_err(dev, "ADC FIFO entry belongs to channel %d instead of %lu\n", fifo_chan, chan->address); return -EINVAL; } From patchwork Fri Jun 3 10:00:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 12868902 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 A4015C43334 for ; Fri, 3 Jun 2022 10:00:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; 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d="scan'208";a="668392749" Received: from black.fi.intel.com ([10.237.72.28]) by FMSMGA003.fm.intel.com with ESMTP; 03 Jun 2022 03:00:04 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 26C525D3; Fri, 3 Jun 2022 13:00:07 +0300 (EEST) From: Andy Shevchenko To: Andy Shevchenko , linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Jonathan Cameron , Lars-Peter Clausen , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl Subject: [PATCH v3 3/6] iio: adc: meson_saradc: Convert to use dev_err_probe() Date: Fri, 3 Jun 2022 13:00:01 +0300 Message-Id: <20220603100004.70336-3-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220603100004.70336-1-andriy.shevchenko@linux.intel.com> References: <20220603100004.70336-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220603_030008_333217_A985D73F X-CRM114-Status: GOOD ( 16.87 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org It's fine to call dev_err_probe() in ->probe() when error code is known. Convert the driver to use dev_err_probe(). Signed-off-by: Andy Shevchenko Reviewed-by: Martin Blumenstingl --- v3: rebased on top of previous changes drivers/iio/adc/meson_saradc.c | 52 +++++++++++++--------------------- 1 file changed, 19 insertions(+), 33 deletions(-) diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c index 658047370db0..0d9aef362c5d 100644 --- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -698,6 +698,7 @@ static int meson_sar_adc_temp_sensor_init(struct iio_dev *indio_dev) { struct meson_sar_adc_priv *priv = iio_priv(indio_dev); u8 *buf, trimming_bits, trimming_mask, upper_adc_val; + struct device *dev = indio_dev->dev.parent; struct nvmem_cell *temperature_calib; size_t read_len; int ret; @@ -714,30 +715,23 @@ static int meson_sar_adc_temp_sensor_init(struct iio_dev *indio_dev) if (ret == -ENODEV) return 0; - return dev_err_probe(indio_dev->dev.parent, ret, - "failed to get temperature_calib cell\n"); + return dev_err_probe(dev, ret, "failed to get temperature_calib cell\n"); } priv->tsc_regmap = syscon_regmap_lookup_by_phandle(indio_dev->dev.parent->of_node, "amlogic,hhi-sysctrl"); - if (IS_ERR(priv->tsc_regmap)) { - dev_err(indio_dev->dev.parent, - "failed to get amlogic,hhi-sysctrl regmap\n"); - return PTR_ERR(priv->tsc_regmap); - } + if (IS_ERR(priv->tsc_regmap)) + return dev_err_probe(dev, PTR_ERR(priv->tsc_regmap), + "failed to get amlogic,hhi-sysctrl regmap\n"); read_len = MESON_SAR_ADC_EFUSE_BYTES; buf = nvmem_cell_read(temperature_calib, &read_len); - if (IS_ERR(buf)) { - dev_err(indio_dev->dev.parent, - "failed to read temperature_calib cell\n"); - return PTR_ERR(buf); - } else if (read_len != MESON_SAR_ADC_EFUSE_BYTES) { + if (IS_ERR(buf)) + return dev_err_probe(dev, PTR_ERR(buf), "failed to read temperature_calib cell\n"); + if (read_len != MESON_SAR_ADC_EFUSE_BYTES) { kfree(buf); - dev_err(indio_dev->dev.parent, - "invalid read size of temperature_calib cell\n"); - return -EINVAL; + return dev_err_probe(dev, -EINVAL, "invalid read size of temperature_calib cell\n"); } trimming_bits = priv->param->temperature_trimming_bits; @@ -762,6 +756,7 @@ static int meson_sar_adc_temp_sensor_init(struct iio_dev *indio_dev) static int meson_sar_adc_init(struct iio_dev *indio_dev) { struct meson_sar_adc_priv *priv = iio_priv(indio_dev); + struct device *dev = indio_dev->dev.parent; int regval, i, ret; /* @@ -885,18 +880,12 @@ static int meson_sar_adc_init(struct iio_dev *indio_dev) } ret = clk_set_parent(priv->adc_sel_clk, priv->clkin); - if (ret) { - dev_err(indio_dev->dev.parent, - "failed to set adc parent to clkin\n"); - return ret; - } + if (ret) + return dev_err_probe(dev, ret, "failed to set adc parent to clkin\n"); ret = clk_set_rate(priv->adc_clk, priv->param->clock_rate); - if (ret) { - dev_err(indio_dev->dev.parent, - "failed to set adc clock rate\n"); - return ret; - } + if (ret) + return dev_err_probe(dev, ret, "failed to set adc clock rate\n"); return 0; } @@ -1183,24 +1172,21 @@ static int meson_sar_adc_probe(struct platform_device *pdev) { const struct meson_sar_adc_data *match_data; struct meson_sar_adc_priv *priv; + struct device *dev = &pdev->dev; struct iio_dev *indio_dev; void __iomem *base; int irq, ret; indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*priv)); - if (!indio_dev) { - dev_err(&pdev->dev, "failed allocating iio device\n"); - return -ENOMEM; - } + if (!indio_dev) + return dev_err_probe(dev, -ENOMEM, "failed allocating iio device\n"); priv = iio_priv(indio_dev); init_completion(&priv->done); match_data = of_device_get_match_data(&pdev->dev); - if (!match_data) { - dev_err(&pdev->dev, "failed to get match data\n"); - return -ENODEV; - } + if (!match_data) + return dev_err_probe(dev, -ENODEV, "failed to get match data\n"); priv->param = match_data->param; From patchwork Fri Jun 3 10:00:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 12868906 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 8277CC43334 for ; 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Signed-off-by: Andy Shevchenko Reviewed-by: Martin Blumenstingl --- v3: no changes drivers/iio/adc/meson_saradc.c | 22 ++++++---------------- 1 file changed, 6 insertions(+), 16 deletions(-) diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c index 0d9aef362c5d..337517a8e1ac 100644 --- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -1222,23 +1222,13 @@ static int meson_sar_adc_probe(struct platform_device *pdev) return dev_err_probe(&pdev->dev, PTR_ERR(priv->core_clk), "failed to get core clk\n"); - priv->adc_clk = devm_clk_get(&pdev->dev, "adc_clk"); - if (IS_ERR(priv->adc_clk)) { - if (PTR_ERR(priv->adc_clk) == -ENOENT) - priv->adc_clk = NULL; - else - return dev_err_probe(&pdev->dev, PTR_ERR(priv->adc_clk), - "failed to get adc clk\n"); - } + priv->adc_clk = devm_clk_get_optional(dev, "adc_clk"); + if (IS_ERR(priv->adc_clk)) + return dev_err_probe(dev, PTR_ERR(priv->adc_clk), "failed to get adc clk\n"); - priv->adc_sel_clk = devm_clk_get(&pdev->dev, "adc_sel"); 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03 Jun 2022 03:00:07 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,274,1647327600"; d="scan'208";a="582496029" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga007.fm.intel.com with ESMTP; 03 Jun 2022 03:00:04 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 3A4C89A9; Fri, 3 Jun 2022 13:00:07 +0300 (EEST) From: Andy Shevchenko To: Andy Shevchenko , linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Jonathan Cameron , Lars-Peter Clausen , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl Subject: [PATCH v3 5/6] iio: adc: meson_saradc: Use temporary variable for struct device Date: Fri, 3 Jun 2022 13:00:03 +0300 Message-Id: <20220603100004.70336-5-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220603100004.70336-1-andriy.shevchenko@linux.intel.com> References: <20220603100004.70336-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220603_030008_363848_0061200F X-CRM114-Status: GOOD ( 14.02 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org Use temporary variable for struct device to make code neater. Signed-off-by: Andy Shevchenko Reviewed-by: Martin Blumenstingl --- v3: rebased on top of previous changes drivers/iio/adc/meson_saradc.c | 53 ++++++++++++++-------------------- 1 file changed, 22 insertions(+), 31 deletions(-) diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c index 337517a8e1ac..c100f933c12e 100644 --- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -549,6 +549,7 @@ static int meson_sar_adc_get_sample(struct iio_dev *indio_dev, int *val) { struct meson_sar_adc_priv *priv = iio_priv(indio_dev); + struct device *dev = indio_dev->dev.parent; int ret; if (chan->type == IIO_TEMP && !priv->temperature_sensor_calibrated) @@ -572,8 +573,7 @@ static int meson_sar_adc_get_sample(struct iio_dev *indio_dev, meson_sar_adc_unlock(indio_dev); if (ret) { - dev_warn(indio_dev->dev.parent, - "failed to read sample for channel %lu: %d\n", + dev_warn(dev, "failed to read sample for channel %lu: %d\n", chan->address, ret); return ret; } @@ -586,6 +586,7 @@ static int meson_sar_adc_iio_info_read_raw(struct iio_dev *indio_dev, int *val, int *val2, long mask) { struct meson_sar_adc_priv *priv = iio_priv(indio_dev); + struct device *dev = indio_dev->dev.parent; int ret; switch (mask) { @@ -602,9 +603,7 @@ static int meson_sar_adc_iio_info_read_raw(struct iio_dev *indio_dev, if (chan->type == IIO_VOLTAGE) { ret = regulator_get_voltage(priv->vref); if (ret < 0) { - dev_err(indio_dev->dev.parent, - "failed to get vref voltage: %d\n", - ret); + dev_err(dev, "failed to get vref voltage: %d\n", ret); return ret; } @@ -703,8 +702,7 @@ static int meson_sar_adc_temp_sensor_init(struct iio_dev *indio_dev) size_t read_len; int ret; - temperature_calib = devm_nvmem_cell_get(indio_dev->dev.parent, - "temperature_calib"); + temperature_calib = devm_nvmem_cell_get(dev, "temperature_calib"); if (IS_ERR(temperature_calib)) { ret = PTR_ERR(temperature_calib); @@ -718,9 +716,7 @@ static int meson_sar_adc_temp_sensor_init(struct iio_dev *indio_dev) return dev_err_probe(dev, ret, "failed to get temperature_calib cell\n"); } - priv->tsc_regmap = - syscon_regmap_lookup_by_phandle(indio_dev->dev.parent->of_node, - "amlogic,hhi-sysctrl"); + priv->tsc_regmap = syscon_regmap_lookup_by_phandle(dev->of_node, "amlogic,hhi-sysctrl"); if (IS_ERR(priv->tsc_regmap)) return dev_err_probe(dev, PTR_ERR(priv->tsc_regmap), "failed to get amlogic,hhi-sysctrl regmap\n"); @@ -908,6 +904,7 @@ static void meson_sar_adc_set_bandgap(struct iio_dev *indio_dev, bool on_off) static int meson_sar_adc_hw_enable(struct iio_dev *indio_dev) { struct meson_sar_adc_priv *priv = iio_priv(indio_dev); + struct device *dev = indio_dev->dev.parent; int ret; u32 regval; @@ -917,14 +914,13 @@ static int meson_sar_adc_hw_enable(struct iio_dev *indio_dev) ret = regulator_enable(priv->vref); if (ret < 0) { - dev_err(indio_dev->dev.parent, - "failed to enable vref regulator\n"); + dev_err(dev, "failed to enable vref regulator\n"); goto err_vref; } ret = clk_prepare_enable(priv->core_clk); if (ret) { - dev_err(indio_dev->dev.parent, "failed to enable core clk\n"); + dev_err(dev, "failed to enable core clk\n"); goto err_core_clk; } @@ -942,7 +938,7 @@ static int meson_sar_adc_hw_enable(struct iio_dev *indio_dev) ret = clk_prepare_enable(priv->adc_clk); if (ret) { - dev_err(indio_dev->dev.parent, "failed to enable adc clk\n"); + dev_err(dev, "failed to enable adc clk\n"); goto err_adc_clk; } @@ -1177,14 +1173,14 @@ static int meson_sar_adc_probe(struct platform_device *pdev) void __iomem *base; int irq, ret; - indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*priv)); + indio_dev = devm_iio_device_alloc(dev, sizeof(*priv)); if (!indio_dev) return dev_err_probe(dev, -ENOMEM, "failed allocating iio device\n"); priv = iio_priv(indio_dev); init_completion(&priv->done); - match_data = of_device_get_match_data(&pdev->dev); + match_data = of_device_get_match_data(dev); if (!match_data) return dev_err_probe(dev, -ENODEV, "failed to get match data\n"); @@ -1198,29 +1194,25 @@ static int meson_sar_adc_probe(struct platform_device *pdev) if (IS_ERR(base)) return PTR_ERR(base); - priv->regmap = devm_regmap_init_mmio(&pdev->dev, base, - priv->param->regmap_config); + priv->regmap = devm_regmap_init_mmio(dev, base, priv->param->regmap_config); if (IS_ERR(priv->regmap)) return PTR_ERR(priv->regmap); - irq = irq_of_parse_and_map(pdev->dev.of_node, 0); + irq = irq_of_parse_and_map(dev->of_node, 0); if (!irq) return -EINVAL; - ret = devm_request_irq(&pdev->dev, irq, meson_sar_adc_irq, IRQF_SHARED, - dev_name(&pdev->dev), indio_dev); + ret = devm_request_irq(dev, irq, meson_sar_adc_irq, IRQF_SHARED, dev_name(dev), indio_dev); if (ret) return ret; - priv->clkin = devm_clk_get(&pdev->dev, "clkin"); + priv->clkin = devm_clk_get(dev, "clkin"); if (IS_ERR(priv->clkin)) - return dev_err_probe(&pdev->dev, PTR_ERR(priv->clkin), - "failed to get clkin\n"); + return dev_err_probe(dev, PTR_ERR(priv->clkin), "failed to get clkin\n"); - priv->core_clk = devm_clk_get(&pdev->dev, "core"); + priv->core_clk = devm_clk_get(dev, "core"); if (IS_ERR(priv->core_clk)) - return dev_err_probe(&pdev->dev, PTR_ERR(priv->core_clk), - "failed to get core clk\n"); + return dev_err_probe(dev, PTR_ERR(priv->core_clk), "failed to get core clk\n"); priv->adc_clk = devm_clk_get_optional(dev, "adc_clk"); if (IS_ERR(priv->adc_clk)) @@ -1237,10 +1229,9 @@ static int meson_sar_adc_probe(struct platform_device *pdev) return ret; } - priv->vref = devm_regulator_get(&pdev->dev, "vref"); + priv->vref = devm_regulator_get(dev, "vref"); if (IS_ERR(priv->vref)) - return dev_err_probe(&pdev->dev, PTR_ERR(priv->vref), - "failed to get vref regulator\n"); + return dev_err_probe(dev, PTR_ERR(priv->vref), "failed to get vref regulator\n"); priv->calibscale = MILLION; @@ -1270,7 +1261,7 @@ static int meson_sar_adc_probe(struct platform_device *pdev) ret = meson_sar_adc_calib(indio_dev); if (ret) - dev_warn(&pdev->dev, "calibration failed\n"); + dev_warn(dev, "calibration failed\n"); platform_set_drvdata(pdev, indio_dev); From patchwork Fri Jun 3 10:00:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 12868907 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 C6E3EC433EF for ; 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03 Jun 2022 03:00:11 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,274,1647327600"; d="scan'208";a="613215278" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga001.jf.intel.com with ESMTP; 03 Jun 2022 03:00:08 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 4ACC5D99; Fri, 3 Jun 2022 13:00:07 +0300 (EEST) From: Andy Shevchenko To: Andy Shevchenko , linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Jonathan Cameron , Lars-Peter Clausen , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl Subject: [RFC PATCH v3 6/6] iio: adc: meson_saradc: Use regmap_read_poll_timeout() for busy wait Date: Fri, 3 Jun 2022 13:00:04 +0300 Message-Id: <20220603100004.70336-6-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220603100004.70336-1-andriy.shevchenko@linux.intel.com> References: <20220603100004.70336-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220603_030011_886946_CE43A4AB X-CRM114-Status: GOOD ( 15.00 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org Simplify busy wait stages by using regmap_read_poll_timeout(). Signed-off-by: Andy Shevchenko Reviewed-by: Martin Blumenstingl Tested-by: Martin Blumenstingl # GXM VIM2 --- v3: new patch, but RFC, not always the read_poll_timeout() can be used, would be nice to have it tested. drivers/iio/adc/meson_saradc.c | 31 +++++++++++++------------------ 1 file changed, 13 insertions(+), 18 deletions(-) diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c index c100f933c12e..c18be3c519af 100644 --- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -322,22 +322,17 @@ static int meson_sar_adc_calib_val(struct iio_dev *indio_dev, int val) static int meson_sar_adc_wait_busy_clear(struct iio_dev *indio_dev) { struct meson_sar_adc_priv *priv = iio_priv(indio_dev); - int regval, timeout = 10000; + int val; /* * NOTE: we need a small delay before reading the status, otherwise * the sample engine may not have started internally (which would * seem to us that sampling is already finished). */ - do { - udelay(1); - regmap_read(priv->regmap, MESON_SAR_ADC_REG0, ®val); - } while (FIELD_GET(MESON_SAR_ADC_REG0_BUSY_MASK, regval) && timeout--); - - if (timeout < 0) - return -ETIMEDOUT; - - return 0; + udelay(1); + return regmap_read_poll_timeout_atomic(priv->regmap, MESON_SAR_ADC_REG0, val, + !FIELD_GET(MESON_SAR_ADC_REG0_BUSY_MASK, val), + 1, 10000); } static int meson_sar_adc_read_raw_sample(struct iio_dev *indio_dev, @@ -489,7 +484,7 @@ static void meson_sar_adc_stop_sample_engine(struct iio_dev *indio_dev) static int meson_sar_adc_lock(struct iio_dev *indio_dev) { struct meson_sar_adc_priv *priv = iio_priv(indio_dev); - int val, timeout = 10000; + int val, ret; mutex_lock(&indio_dev->mlock); @@ -499,18 +494,18 @@ static int meson_sar_adc_lock(struct iio_dev *indio_dev) MESON_SAR_ADC_DELAY_KERNEL_BUSY, MESON_SAR_ADC_DELAY_KERNEL_BUSY); + udelay(1); + /* * wait until BL30 releases it's lock (so we can use the SAR * ADC) */ - do { - udelay(1); - regmap_read(priv->regmap, MESON_SAR_ADC_DELAY, &val); - } while (val & MESON_SAR_ADC_DELAY_BL30_BUSY && timeout--); - - if (timeout < 0) { + ret = regmap_read_poll_timeout_atomic(priv->regmap, MESON_SAR_ADC_DELAY, val, + !(val & MESON_SAR_ADC_DELAY_BL30_BUSY), + 1, 10000); + if (ret) { mutex_unlock(&indio_dev->mlock); - return -ETIMEDOUT; + return ret; } }