From mboxrd@z Thu Jan 1 00:00:00 1970 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=-8.8 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 7B45BECDE46 for ; Sat, 27 Oct 2018 02:00:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3F9292086E for ; Sat, 27 Oct 2018 02:00:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=usp-br.20150623.gappssmtp.com header.i=@usp-br.20150623.gappssmtp.com header.b="SzL4Zeni" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3F9292086E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=usp.br Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727876AbeJ0KkM (ORCPT ); Sat, 27 Oct 2018 06:40:12 -0400 Received: from mail-qt1-f195.google.com ([209.85.160.195]:46532 "EHLO mail-qt1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727840AbeJ0KkL (ORCPT ); Sat, 27 Oct 2018 06:40:11 -0400 Received: by mail-qt1-f195.google.com with SMTP id c16-v6so3382088qtj.13 for ; Fri, 26 Oct 2018 19:00:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=usp-br.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=q2vdmtUPmzwFZSI00GQes0NB6ZitLyrsTfc3LNt6rZ8=; b=SzL4ZeniqHfcy081DHrPNC+V2oGbX5i773yZH+MmCKUiVrOPTXl+wcXMl1ye6RyWhU +O+yAMQUlp+6mK1sp6OVmT9Ef8b/yAnjWmBDbKRLbIeuIfGE/Xd3DoVUttxfSbQWOaRA q50xaSGVCz0m2uAOOOpTuDRXVenyktYgSjgEBzCWwsqr1uw0Zu7TqVaSwuKVBWmVYjAi q5lcywwbf94NGO6aQeuHLsHkU0FBj+E0Yl90xI1bQ+AJfczUXcxbSh9UUqXmA3M0yF9k tTWz1U4+AFWMox2C4qKtruqkU9goxYWrvNDJsyNrDXfQjFmP6PzOofIXNXPS6CjxFEZm 2h3Q== 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; bh=q2vdmtUPmzwFZSI00GQes0NB6ZitLyrsTfc3LNt6rZ8=; b=f5hDjgam5hjrHsTmL2wX46ct4xoY9TXF7jlvEIBk6YPE4GAuYCQPFUp04WH9E2LYcl ud+UKGA/mJh0U8mt7DiIYfBucFC9OBj9S3j8fE31dZK5US8WctGzYDMP/DZKKI6aKB7o +INYmrm+zDMfLWaqrh9lEY6CiGdDZPKG9l7uS/5MWXtLZtc9VDY/zLQeFT0N4XtgygBT lRKHEVUTVzMZlVcSu0QoWNjzmZgDgFnPk4R9v5q/Fmjt4PHI0pTQzX57ZOX2FY4luZps ibKKqcXCxQMvOAbK2kEiOZJrhDxCdfltt7uS3FCmD+JQ0qYMI5uWeihOI68/FXKVAz5Z BNlw== X-Gm-Message-State: AGRZ1gKhWJcdOQD4Rrc9Lcc8ccslcaEaj2iE+SiiSPQa8Lxhi0c2uTnd lnSpAMekUS1w1xubqlzJNnkMtA== X-Google-Smtp-Source: AJdET5d/djts5UApLE+6dQVmk45w7/rXb4FHqLDrVbp69bflikCGdDgMAxOfQMUC7z60YCiisfRtbg== X-Received: by 2002:a0c:ad8f:: with SMTP id w15mr5372488qvc.146.1540605650310; Fri, 26 Oct 2018 19:00:50 -0700 (PDT) Received: from mango.spo.virtua.com.br ([2804:14c:81:942d::1]) by smtp.gmail.com with ESMTPSA id h67-v6sm8499777qkf.32.2018.10.26.19.00.47 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 26 Oct 2018 19:00:49 -0700 (PDT) From: Matheus Tavares To: Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , Hartmut Knaack , Peter Meerwald-Stadler , Greg Kroah-Hartman Cc: linux-iio@vger.kernel.org, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, kernel-usp@googlegroups.com, Victor Colombo Subject: [PATCH v2 5/6] staging:iio:ad2s90: Add IIO_CHAN_INFO_SCALE to channel spec and read_raw Date: Fri, 26 Oct 2018 23:00:04 -0300 Message-Id: <20181027020005.3140-6-matheus.bernardino@usp.br> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20181027020005.3140-1-matheus.bernardino@usp.br> References: <20181027020005.3140-1-matheus.bernardino@usp.br> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds the IIO_CHAN_INFO_SCALE mask to ad2s90_chan and implements the relative read behavior at ad2s90_read_raw. Signed-off-by: Victor Colombo Signed-off-by: Matheus Tavares --- drivers/staging/iio/resolver/ad2s90.c | 32 ++++++++++++++++++--------- 1 file changed, 22 insertions(+), 10 deletions(-) diff --git a/drivers/staging/iio/resolver/ad2s90.c b/drivers/staging/iio/resolver/ad2s90.c index b4a6a89c11b0..52b656875ed1 100644 --- a/drivers/staging/iio/resolver/ad2s90.c +++ b/drivers/staging/iio/resolver/ad2s90.c @@ -34,19 +34,31 @@ static int ad2s90_read_raw(struct iio_dev *indio_dev, int ret; struct ad2s90_state *st = iio_priv(indio_dev); - mutex_lock(&st->lock); + switch (m) { + case IIO_CHAN_INFO_SCALE: + /* 2 * Pi / (2^12 - 1) ~= 0.001534355 */ + *val = 0; + *val2 = 1534355; + return IIO_VAL_INT_PLUS_NANO; + case IIO_CHAN_INFO_RAW: + mutex_lock(&st->lock); + + ret = spi_read(st->sdev, st->rx, 2); + if (ret < 0) { + mutex_unlock(&st->lock); + return ret; + } + + *val = (((u16)(st->rx[0])) << 4) | ((st->rx[1] & 0xF0) >> 4); - ret = spi_read(st->sdev, st->rx, 2); - if (ret < 0) { mutex_unlock(&st->lock); - return ret; - } - *val = (((u16)(st->rx[0])) << 4) | ((st->rx[1] & 0xF0) >> 4); - - mutex_unlock(&st->lock); + return IIO_VAL_INT; + default: + break; + } - return IIO_VAL_INT; + return -EINVAL; } static const struct iio_info ad2s90_info = { @@ -57,7 +69,7 @@ static const struct iio_chan_spec ad2s90_chan = { .type = IIO_ANGL, .indexed = 1, .channel = 0, - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), }; static int ad2s90_probe(struct spi_device *spi) -- 2.18.0