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[2001:14ba:16f3:4a00::1]) by smtp.gmail.com with ESMTPSA id z20-20020ac25df4000000b004d85895d7e0sm2984411lfq.147.2023.04.12.05.27.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Apr 2023 05:27:23 -0700 (PDT) Date: Wed, 12 Apr 2023 15:27:14 +0300 From: Matti Vaittinen To: Matti Vaittinen Cc: Jonathan Cameron , Lars-Peter Clausen , Matti Vaittinen , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/3] iio: core: add IIO_VAL_INT_MICRO Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1762974500216697977?= X-GMAIL-MSGID: =?utf-8?q?1762974500216697977?= There are a few cases like light sensor integration times, where values returned from *_available() and read_raw() are smaller than 1 and often in the units of micro. (Like micro second scale integration times, always smaller than 1 second). Currently those are often handled using IIO_VAL_INT_PLUS_MICRO, which requires drivers to initialize the integer part to zero. Furthermore, using IIO_VAL_INT_PLUS_MICRO in iio lists requires one to always allocate the 'dummy' integer part too. Introduce IIO_VAL_INT_MICRO which allows omitting the always zero integer. Signed-off-by: Matti Vaittinen --- drivers/iio/industrialio-core.c | 4 ++++ include/linux/iio/types.h | 1 + 2 files changed, 5 insertions(+) diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index c117f50d0cf3..c5ae965e9961 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -628,6 +628,8 @@ static ssize_t __iio_format_value(char *buf, size_t offset, unsigned int type, switch (type) { case IIO_VAL_INT: return sysfs_emit_at(buf, offset, "%d", vals[0]); + case IIO_VAL_INT_MICRO: + return sysfs_emit_at(buf, offset, "0.%06u", vals[0]); case IIO_VAL_INT_PLUS_MICRO_DB: scale_db = true; fallthrough; @@ -758,6 +760,7 @@ static ssize_t iio_format_list(char *buf, const int *vals, int type, int length, switch (type) { case IIO_VAL_INT: + case IIO_VAL_INT_MICRO: stride = 1; break; default: @@ -952,6 +955,7 @@ static ssize_t iio_write_channel_info(struct device *dev, case IIO_VAL_INT_PLUS_MICRO_DB: scale_db = true; fallthrough; + case IIO_VAL_INT_MICRO: case IIO_VAL_INT_PLUS_MICRO: fract_mult = 100000; break; diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h index 82faa98c719a..b4e316172c7f 100644 --- a/include/linux/iio/types.h +++ b/include/linux/iio/types.h @@ -30,6 +30,7 @@ enum iio_event_info { #define IIO_VAL_FRACTIONAL 10 #define IIO_VAL_FRACTIONAL_LOG2 11 #define IIO_VAL_CHAR 12 +#define IIO_VAL_INT_MICRO 13 /* val is micro . 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Use the new IIO_VAL_INT_MICRO to return times in seconds Signed-off-by: Matti Vaittinen --- drivers/iio/industrialio-gts-helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/industrialio-gts-helper.c b/drivers/iio/industrialio-gts-helper.c index 8bb68975b259..e242d0eb8b94 100644 --- a/drivers/iio/industrialio-gts-helper.c +++ b/drivers/iio/industrialio-gts-helper.c @@ -683,7 +683,7 @@ int iio_gts_avail_times(struct iio_gts *gts, const int **vals, int *type, return -EINVAL; *vals = gts->avail_time_tables; - *type = IIO_VAL_INT; + *type = IIO_VAL_INT_MICRO; *length = gts->num_avail_time_tables; return IIO_AVAIL_LIST; From patchwork Wed Apr 12 12:29:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matti Vaittinen X-Patchwork-Id: 82456 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp297502vqo; Wed, 12 Apr 2023 05:47:16 -0700 (PDT) X-Google-Smtp-Source: AKy350bHpgYTm7+H9SPukD/VkRrs3RFRDfFGzP8IrLSDekuGbVvpGULqHgIe2IMeHGoLEgqKV3mI X-Received: by 2002:aa7:cccd:0:b0:4fc:9a22:e0d2 with SMTP id y13-20020aa7cccd000000b004fc9a22e0d2mr2306616edt.14.1681303635717; Wed, 12 Apr 2023 05:47:15 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1681303635; cv=none; d=google.com; s=arc-20160816; b=fXEWNYqLE0DvCS7dC5YF+RwFVPeoCyDao1jdl2dELbOXZ9xrYe9xWM2aoQxqtLM8J9 gHp3OB1dD2x69elG0sN+St8e51DRQs8hfzWGW6eDIoCfdnbDmDtuAQsiFGLJVxd2Y0kr KZX/eNjveY4Uw+KXyy6/o4UhotHR/p9/hFxodGAY+Vbl69Y9eHmY4S24vYAVeN50R310 GU8L1KhgNJ8viJhrwfIODBWdhb98xbvBkzUxkSFbivG9U/t1LhrDkbDXShIaRkAF3qS7 UAvWPGcOyrhqaqxTNnYOq/7YQWwmgHtQUadmlN7dgnls1X6JJEDS5yWPg9ybITGWk8Sq V4bw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=siCdH4i793Fr0Wj+21nPqmHI0RDFnIElDQrnU73xJYE=; b=mDDP05zk/XX9TUW4e7SM3l6/KPXkrnvzwQwYygOAHVyUbTIzkADPa6C00oIPKo08Dw x+x18CpSwl5+LsE7ojgDRiYRFkjRhjoiumJm2gRiZu1C542jaannOWP+zAe0BHrHM6g2 ABVJTG6TBA8DXnGs/XEWHeHqXCZN2NfuiGx0HAaXmtQhfFBAKIrdZExt9i6+1drS/Kqc Z3dP+iMxk0cDXLG5AjI82CQCVH+9qRREigfyh7kpeO7MeKD1+BStilXU6pN9UGvSlq9N xkgClTYHyM9tb8Ngmpi4DnAAev24j/096jvdQyxcCmwLvOpI/KS63luniCHMY57VMawa Mrdw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20221208 header.b=VQeCgQHI; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from out1.vger.email (out1.vger.email. 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[2001:14ba:16f3:4a00::1]) by smtp.gmail.com with ESMTPSA id n12-20020a19550c000000b004e7d6eb9cbfsm2973522lfe.190.2023.04.12.05.29.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Apr 2023 05:29:10 -0700 (PDT) Date: Wed, 12 Apr 2023 15:29:01 +0300 From: Matti Vaittinen To: Matti Vaittinen Cc: Jonathan Cameron , Lars-Peter Clausen , Matti Vaittinen , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 3/3] iio: bu27034: Fix integration time units Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1762974640928580156?= X-GMAIL-MSGID: =?utf-8?q?1762974640928580156?= The integration time was presented by BU27034 in micro seconds. The ABI documentation says this should be in seconds. Fix integration time to be in seconds. Signed-off-by: Matti Vaittinen --- drivers/iio/light/rohm-bu27034.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/iio/light/rohm-bu27034.c b/drivers/iio/light/rohm-bu27034.c index e486dcf35eba..6044db52abfa 100644 --- a/drivers/iio/light/rohm-bu27034.c +++ b/drivers/iio/light/rohm-bu27034.c @@ -1171,7 +1171,7 @@ static int bu27034_read_raw(struct iio_dev *idev, if (*val < 0) return *val; - return IIO_VAL_INT; + return IIO_VAL_INT_MICRO; case IIO_CHAN_INFO_SCALE: return bu27034_get_scale(data, chan->channel, val, val2); @@ -1229,7 +1229,10 @@ static int bu27034_write_raw(struct iio_dev *idev, ret = bu27034_set_scale(data, chan->channel, val, val2); break; case IIO_CHAN_INFO_INT_TIME: - ret = bu27034_try_set_int_time(data, val); + if (val) + return -EINVAL; + + ret = bu27034_try_set_int_time(data, val2); break; default: ret = -EINVAL;