From patchwork Tue May 11 07:18:29 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandru Ardelean X-Patchwork-Id: 12249977 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=-18.8 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=ham 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 5C0D4C43461 for ; Tue, 11 May 2021 07:19:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3443F61920 for ; Tue, 11 May 2021 07:19:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231153AbhEKHUL (ORCPT ); Tue, 11 May 2021 03:20:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35850 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230497AbhEKHT7 (ORCPT ); Tue, 11 May 2021 03:19:59 -0400 Received: from mail-ed1-x536.google.com (mail-ed1-x536.google.com [IPv6:2a00:1450:4864:20::536]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9AF9CC06134A for ; Tue, 11 May 2021 00:18:46 -0700 (PDT) Received: by mail-ed1-x536.google.com with SMTP id c22so21614543edn.7 for ; Tue, 11 May 2021 00:18:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=deviqon.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=OjyXmokyyEi4mYmoSxzJwRJFFFsatuf8PBQju296W0w=; b=RqZyvI4Ref0gaXFImbjvyEYHYYueIwC+5l3WQ5s6Ma8gtNeBRdTde2JfhfTyTgg0KO HdzF8qEscFr2XzjK+a+yFiKr/qngecyHYqzjTD2BGHUDa7G8hcvqKVaf31kgV5RFeCfy gnHL9SsLaAVGeIn1cDHqvHoAAfam1iNTiAijp+E6/ZNDw2QxFUuOvjfGG2JIw4nIP8Yc CzOoDcq/Ir68YnFrWd8671fqtoAWSmPGVTe20ZJsGg/UhOvgZnkxlr8rmNMq9M6+/5ML YGTiGKUoNxOfORG/LtSKlauRmL/zyATuTvUu9G0LsU8bBIhXh0e2H3HZN1r6wnqVSLuP G2iQ== 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=OjyXmokyyEi4mYmoSxzJwRJFFFsatuf8PBQju296W0w=; b=cHw3I9NF2pA5NubYBZquGdnzZLkTEZSsySwhYTRaqYNVG0ahuFjQWhTM4UxQodwbwO GilmSg2EQ4Hu7fDSbC5PbA65ZRKN8vChaomkWjNPQXu17zrOEKr4csGi5XCGG3mE97F0 iHyUx67UQgRnSY62lH3+mN/xy2ukxFsjpgCRH3lnPWzFqcdKrWMTWl92J6qQ1a/puBfW v1cdERb36QMOXx0HFJRKh4Pp0TO4Sw6JG5m9dkj1xbL+43IlUVLtVc2ZDyT+b0eMUBML OpdfEtp2Jrw/xScGV3FdoijGN8jEzQ2iFuZLRXGAyrhXPOqfQXPMQFqPa+Ywgn54KSb5 EoWg== X-Gm-Message-State: AOAM531tLjU/oVJYVLPIqKibygP5iH9Avsdu713e96Z9mrAyECI7l771 ykir8d5D09qbjnP2yOMzTWyV1z1RS60dHna3 X-Google-Smtp-Source: ABdhPJwen16A/yUfPkZAwST2ej+Wa8csmfGwlYKlau0yXL5+0GnwnMzdPYr7oXsnLKKSKhi1X5kadg== X-Received: by 2002:aa7:d146:: with SMTP id r6mr34822500edo.344.1620717525130; Tue, 11 May 2021 00:18:45 -0700 (PDT) Received: from neptune.. ([188.27.131.122]) by smtp.gmail.com with ESMTPSA id i6sm13871558eds.83.2021.05.11.00.18.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 May 2021 00:18:44 -0700 (PDT) From: Alexandru Ardelean To: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Cc: jic23@kernel.org, Jonathan.Cameron@huawei.com, alexandru.tachici@analog.com, linux@deviqon.com, Alexandru Ardelean Subject: [PATCH v2 10/12] iio: adc: ad7192: convert to device-managed functions Date: Tue, 11 May 2021 10:18:29 +0300 Message-Id: <20210511071831.576145-11-aardelean@deviqon.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210511071831.576145-1-aardelean@deviqon.com> References: <20210511071831.576145-1-aardelean@deviqon.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org With the devm_ad_sd_setup_buffer_and_trigger() helper, it's a bit easier now to convert the probe of the AD7192 driver to use device-managed functions. The regulators and the mclk requires devm_add_action_or_reset() callbacks though. Signed-off-by: Alexandru Ardelean --- drivers/iio/adc/ad7192.c | 93 ++++++++++++++++------------------------ 1 file changed, 37 insertions(+), 56 deletions(-) diff --git a/drivers/iio/adc/ad7192.c b/drivers/iio/adc/ad7192.c index 18e731f1471a..50696959c018 100644 --- a/drivers/iio/adc/ad7192.c +++ b/drivers/iio/adc/ad7192.c @@ -908,6 +908,16 @@ static int ad7192_channels_config(struct iio_dev *indio_dev) return 0; } +static void ad7192_reg_disable(void *reg) +{ + regulator_disable(reg); +} + +static void ad7192_clk_disable(void *clk) +{ + clk_disable_unprepare(clk); +} + static int ad7192_probe(struct spi_device *spi) { struct ad7192_state *st; @@ -937,41 +947,44 @@ static int ad7192_probe(struct spi_device *spi) return ret; } + ret = devm_add_action_or_reset(&spi->dev, ad7192_reg_disable, st->avdd); + if (ret) + return ret; + st->dvdd = devm_regulator_get(&spi->dev, "dvdd"); - if (IS_ERR(st->dvdd)) { - ret = PTR_ERR(st->dvdd); - goto error_disable_avdd; - } + if (IS_ERR(st->dvdd)) + return PTR_ERR(st->dvdd); ret = regulator_enable(st->dvdd); if (ret) { dev_err(&spi->dev, "Failed to enable specified DVdd supply\n"); - goto error_disable_avdd; + return ret; } + ret = devm_add_action_or_reset(&spi->dev, ad7192_reg_disable, st->dvdd); + if (ret) + return ret; + voltage_uv = regulator_get_voltage(st->avdd); if (voltage_uv == 0) { - ret = -EINVAL; dev_err(&spi->dev, "Zero value provided for AVdd supply\n"); - goto error_disable_avdd; + return -EINVAL; } if (voltage_uv > 0) { st->int_vref_mv = voltage_uv / 1000; } else { - ret = voltage_uv; dev_err(&spi->dev, "Device tree error, reference voltage undefined\n"); - goto error_disable_avdd; + return voltage_uv; } - spi_set_drvdata(spi, indio_dev); st->chip_info = of_device_get_match_data(&spi->dev); indio_dev->name = st->chip_info->name; indio_dev->modes = INDIO_DIRECT_MODE; ret = ad7192_channels_config(indio_dev); if (ret < 0) - goto error_disable_dvdd; + return ret; if (st->chip_info->chip_id == CHIPID_AD7195) indio_dev->info = &ad7195_info; @@ -980,17 +993,15 @@ static int ad7192_probe(struct spi_device *spi) ad_sd_init(&st->sd, indio_dev, spi, &ad7192_sigma_delta_info); - ret = ad_sd_setup_buffer_and_trigger(indio_dev); + ret = devm_ad_sd_setup_buffer_and_trigger(&spi->dev, indio_dev); if (ret) - goto error_disable_dvdd; + return ret; st->fclk = AD7192_INT_FREQ_MHZ; st->mclk = devm_clk_get_optional(&spi->dev, "mclk"); - if (IS_ERR(st->mclk)) { - ret = PTR_ERR(st->mclk); - goto error_remove_trigger; - } + if (IS_ERR(st->mclk)) + return PTR_ERR(st->mclk); st->clock_sel = ad7192_of_clock_select(st); @@ -998,55 +1009,26 @@ static int ad7192_probe(struct spi_device *spi) st->clock_sel == AD7192_CLK_EXT_MCLK2) { ret = clk_prepare_enable(st->mclk); if (ret < 0) - goto error_remove_trigger; + return ret; + + ret = devm_add_action_or_reset(&spi->dev, ad7192_clk_disable, + st->mclk); + if (ret) + return ret; st->fclk = clk_get_rate(st->mclk); if (!ad7192_valid_external_frequency(st->fclk)) { - ret = -EINVAL; dev_err(&spi->dev, "External clock frequency out of bounds\n"); - goto error_disable_clk; + return -EINVAL; } } ret = ad7192_setup(st, spi->dev.of_node); if (ret) - goto error_disable_clk; - - ret = iio_device_register(indio_dev); - if (ret < 0) - goto error_disable_clk; - return 0; - -error_disable_clk: - if (st->clock_sel == AD7192_CLK_EXT_MCLK1_2 || - st->clock_sel == AD7192_CLK_EXT_MCLK2) - clk_disable_unprepare(st->mclk); -error_remove_trigger: - ad_sd_cleanup_buffer_and_trigger(indio_dev); -error_disable_dvdd: - regulator_disable(st->dvdd); -error_disable_avdd: - regulator_disable(st->avdd); - - return ret; -} - -static int ad7192_remove(struct spi_device *spi) -{ - struct iio_dev *indio_dev = spi_get_drvdata(spi); - struct ad7192_state *st = iio_priv(indio_dev); - - iio_device_unregister(indio_dev); - if (st->clock_sel == AD7192_CLK_EXT_MCLK1_2 || - st->clock_sel == AD7192_CLK_EXT_MCLK2) - clk_disable_unprepare(st->mclk); - ad_sd_cleanup_buffer_and_trigger(indio_dev); - - regulator_disable(st->dvdd); - regulator_disable(st->avdd); + return ret; - return 0; + return devm_iio_device_register(&spi->dev, indio_dev); } static const struct of_device_id ad7192_of_match[] = { @@ -1064,7 +1046,6 @@ static struct spi_driver ad7192_driver = { .of_match_table = ad7192_of_match, }, .probe = ad7192_probe, - .remove = ad7192_remove, }; module_spi_driver(ad7192_driver);