From patchwork Mon Sep 13 07:53:29 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Billy Tsai X-Patchwork-Id: 12488049 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=-16.7 required=3.0 tests=BAYES_00, 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 42F19C433F5 for ; Mon, 13 Sep 2021 07:51:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 26F3A60FF2 for ; Mon, 13 Sep 2021 07:51:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237653AbhIMHwl (ORCPT ); Mon, 13 Sep 2021 03:52:41 -0400 Received: from twspam01.aspeedtech.com ([211.20.114.71]:11303 "EHLO twspam01.aspeedtech.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237725AbhIMHwl (ORCPT ); Mon, 13 Sep 2021 03:52:41 -0400 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 18D7VLLY004718; Mon, 13 Sep 2021 15:31:21 +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, 13 Sep 2021 15:51:06 +0800 From: Billy Tsai To: , , , , , , , , , , , , , CC: Subject: [v6 03/11] iio: adc: aspeed: Add vref config function Date: Mon, 13 Sep 2021 15:53:29 +0800 Message-ID: <20210913075337.19991-4-billy_tsai@aspeedtech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210913075337.19991-1-billy_tsai@aspeedtech.com> References: <20210913075337.19991-1-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 18D7VLLY004718 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Add the function to check the vref_fixed_mv 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 cc808ec89a0f..aec335956310 100644 --- a/drivers/iio/adc/aspeed_adc.c +++ b/drivers/iio/adc/aspeed_adc.c @@ -130,7 +130,7 @@ 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_mv; + *val = data->vref_mv; *val2 = ASPEED_RESOLUTION_BITS; return IIO_VAL_FRACTIONAL_LOG2; @@ -195,6 +195,17 @@ 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_mv) { + data->vref_mv = data->model_data->vref_fixed_mv; + return 0; + } + return 0; +} + static int aspeed_adc_probe(struct platform_device *pdev) { struct iio_dev *indio_dev; @@ -250,6 +261,10 @@ 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, @@ -298,6 +313,7 @@ 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);