From patchwork Mon Aug 16 10:48:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Billy Tsai X-Patchwork-Id: 12438165 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=-17.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 77E28C432BE for ; Mon, 16 Aug 2021 10:53:41 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 48A4161BF7 for ; Mon, 16 Aug 2021 10:53:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 48A4161BF7 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=aspeedtech.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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:References:In-Reply-To: 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: List-Owner; bh=pc26XECAgFUXPieDKAMXgQgSedlDhh2tbSafm6V1fSg=; b=rQrByTAtLIBlE4 NxjxueFWSTv46BOE1/UG/D7Blqx4VGm+s1M6D7Y7aIV8Cd1lF5a1RekSQAdpsNvOwlK/Poc4HSc1L wlOVUADdBXwb30aBgL1GlrpmOFu1SsSLMxQbgYv4KuXD4pWKMfvFS1f7C9Qz8yj9pYPOE5bVlfnfu E005CfzdUuJbshzTRxflUGN9bShUnyIQqDeLrw6L+vb/TWVnVhNukGADCVwzLM/UgH+FEgIEgrO8d NvDW5B5J06N+pzJDosV4MhLzFpHJmMvUNf/oZTxrYIMMjxYLqfp3SnU5p+cnLCyGhBWI+ulOjAnQh 77HZQV57wBbT8so0+Czw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mFaCa-00GjTX-2K; Mon, 16 Aug 2021 10:50:44 +0000 Received: from [211.20.114.71] (helo=twspam01.aspeedtech.com) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mFaBF-00GitT-Hp for linux-arm-kernel@lists.infradead.org; Mon, 16 Aug 2021 10:49:23 +0000 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 17GAUNLb044041; Mon, 16 Aug 2021 18:30:23 +0800 (GMT-8) (envelope-from billy_tsai@aspeedtech.com) Received: from BillyTsai-pc.aspeed.com (192.168.2.149) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 16 Aug 2021 18:48:28 +0800 From: Billy Tsai To: , , , , , , , , , , , , , CC: Subject: [v3 06/15] iio: adc: aspeed: Add vref config function Date: Mon, 16 Aug 2021 18:48:37 +0800 Message-ID: <20210816104846.13155-7-billy_tsai@aspeedtech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210816104846.13155-1-billy_tsai@aspeedtech.com> References: <20210816104846.13155-1-billy_tsai@aspeedtech.com> MIME-Version: 1.0 X-Originating-IP: [192.168.2.149] X-ClientProxiedBy: TWMBX02.aspeed.com (192.168.0.24) To TWMBX02.aspeed.com (192.168.0.24) X-DNSRBL: X-MAIL: twspam01.aspeedtech.com 17GAUNLb044041 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210816_034921_895325_CE687E7B X-CRM114-Status: GOOD ( 13.53 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add the function to check the vref_fixed and set the value to driver data. Signed-off-by: Billy Tsai --- drivers/iio/adc/aspeed_adc.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/iio/adc/aspeed_adc.c b/drivers/iio/adc/aspeed_adc.c index f03c7921d534..f260e40ab9b2 100644 --- a/drivers/iio/adc/aspeed_adc.c +++ b/drivers/iio/adc/aspeed_adc.c @@ -122,7 +122,7 @@ static int aspeed_adc_read_raw(struct iio_dev *indio_dev, return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: - *val = data->model_data->vref_fixed; + *val = data->vref; *val2 = ASPEED_RESOLUTION_BITS; return IIO_VAL_FRACTIONAL_LOG2; @@ -187,6 +187,17 @@ static const struct iio_info aspeed_adc_iio_info = { .debugfs_reg_access = aspeed_adc_reg_access, }; +static int aspeed_adc_vref_config(struct iio_dev *indio_dev) +{ + struct aspeed_adc_data *data = iio_priv(indio_dev); + + if (data->model_data->vref_fixed) { + data->vref = data->model_data->vref_fixed; + return 0; + } + return 0; +} + static int aspeed_adc_probe(struct platform_device *pdev) { struct iio_dev *indio_dev; @@ -242,6 +253,10 @@ static int aspeed_adc_probe(struct platform_device *pdev) } reset_control_deassert(data->rst); + ret = aspeed_adc_vref_config(indio_dev); + if (ret) + goto vref_config_error; + if (data->model_data->wait_init_sequence) { /* Enable engine in normal mode. */ writel(FIELD_PREP(ASPEED_ADC_OP_MODE, @@ -290,6 +305,7 @@ static int aspeed_adc_probe(struct platform_device *pdev) clk_disable_unprepare(data->clk_scaler->clk); clk_enable_error: poll_timeout_error: +vref_config_error: reset_control_assert(data->rst); reset_error: clk_hw_unregister_divider(data->clk_scaler);