From patchwork Mon Aug 23 07:02:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Billy Tsai X-Patchwork-Id: 12452037 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=-17.5 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,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 28C5FC4338F for ; Mon, 23 Aug 2021 07:09:19 +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 E901561220 for ; Mon, 23 Aug 2021 07:09:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org E901561220 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=k34HPrC6NZb2ua aaS/3HtpU1kAxY9FNMcHP4+rLdo88+Ax7GJ2aqtGZPkrFOUVu2HBCbEYwYAlpXOgXVIMttSgzbWNA qS6VUQhdDbU2VyPHD4YzkP+ILNR3f5mnyqDf7B/96g7e+OwCtQTdeEpEAsH+ycqqKY2hjzkr+F2fP FfdoQMrYX5K6r+wuvf6OfRVKjYFeZRQannsyev53p6KrZkX4QpIPMUDdwknPbg/NeBfu7eIluOHV+ zMcH9De1TNEc7jBkjFh2mPQB2PVO+9fqrmskw3y5by2Fa2OKwBlutib668W7djck+5cOFwQ0C6WHR 6kfCWSnIG/lAe/XqkrGg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mI43E-00Fdyp-9s; Mon, 23 Aug 2021 07:07:20 +0000 Received: from twspam01.aspeedtech.com ([211.20.114.71]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mI3yo-00FcNq-Qn for linux-arm-kernel@lists.infradead.org; Mon, 23 Aug 2021 07:02:48 +0000 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 17N6hHAQ051029; Mon, 23 Aug 2021 14:43:19 +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, 23 Aug 2021 15:01:47 +0800 From: Billy Tsai To: , , , , , , , , , , , , , CC: Subject: [v4 06/15] iio: adc: aspeed: Add vref config function Date: Mon, 23 Aug 2021 15:02:31 +0800 Message-ID: <20210823070240.12600-7-billy_tsai@aspeedtech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210823070240.12600-1-billy_tsai@aspeedtech.com> References: <20210823070240.12600-1-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 17N6hHAQ051029 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210823_000247_168368_9C0283F6 X-CRM114-Status: GOOD ( 13.77 ) 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);