From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7915F1EEA49; Mon, 27 Oct 2025 14:38:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761575939; cv=none; b=FJEe+9r672COeq26eXnoeyNYi6X2FgzqF2tASkCMndqKUu7AqYHV39jgeLl9f4GpnL1zqc/T33DGdW0VkK7k/l8BGQlBcWIn5QyQKjP4sqBThbMePMoyz1SS2re+9ty8kYdbq/iSrs/C2k39/Rpc1LH+S549nZlVUCJJSZ7uCkY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761575939; c=relaxed/simple; bh=oUfIDPQuCs+t9kq5MFosiEl5lenf5ewFglNhdf9s7dU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=APkgDZB9LyzK7PsvwlP10QO/O7QmNPsHtNSUasdjKZcnz+ntaXmbuNVvHIPI+0T+0WbKt0lSu1Mem0faY8hcc0K7I880r9vOUDnJ13F4vytageRoN1gMKmKGT7WiL/8VHSU8Sg8fcQv234KW66hMDAod3+6zVLc4XUbLh5cLh14= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=ILwA7fWo; arc=none smtp.client-ip=198.175.65.19 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="ILwA7fWo" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1761575938; x=1793111938; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=oUfIDPQuCs+t9kq5MFosiEl5lenf5ewFglNhdf9s7dU=; b=ILwA7fWohONxEHllCk98qxFS09E8jHA4ajX/fObxoke8U/lWMhuYevve OEcr8Trs3po8DSmKtpbvEiy6DV3mUpEpG4y6r/1Tz+362rWSJMuoaKjoh jG20YkUktSEcOmIzrrJVdSvLDq7C752SjrTJpP5/wJIKnZNi+PL17U31q 4/iPISMHhGJEIzNNTFRgB4mEUmAmQssbeXajyBnAuFum8XpRHFVS86ZrN Cxvo8WCZGskfVksWWohhRF//iN8SaFRvi8POQIXNsJQwhGMVpsl2GgOnP g62Hr33Y3UJG8UdQ6rCCuBiJMf3FEUxkzsCevdkeB3c7CreLCoItgvP+g Q==; X-CSE-ConnectionGUID: ilLLNH+IRTmqNrVj9RgQNQ== X-CSE-MsgGUID: N2LC3F8FT0CXVMDjosf3UQ== X-IronPort-AV: E=McAfee;i="6800,10657,11586"; a="63544484" X-IronPort-AV: E=Sophos;i="6.19,259,1754982000"; d="scan'208";a="63544484" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Oct 2025 07:38:58 -0700 X-CSE-ConnectionGUID: bwRtepJLTQmjXFhCZPBPEA== X-CSE-MsgGUID: k/kDqoV8QJanoi+0cv9cEA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,259,1754982000"; d="scan'208";a="189095714" Received: from black.igk.intel.com ([10.91.253.5]) by orviesa003.jf.intel.com with ESMTP; 27 Oct 2025 07:38:54 -0700 Received: by black.igk.intel.com (Postfix, from userid 1003) id 5114297; Mon, 27 Oct 2025 15:38:53 +0100 (CET) From: Andy Shevchenko To: Andy Shevchenko , linux-iio@vger.kernel.org, chrome-platform@lists.linux.dev, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org Cc: Jonathan Cameron , David Lechner , =?UTF-8?q?Nuno=20S=C3=A1?= , Andy Shevchenko , Benson Leung , Guenter Roeck , Lars-Peter Clausen , Michael Hennerich , Mauro Carvalho Chehab , "Daniel W. S. Almeida" Subject: [PATCH v1 2/6] =?UTF-8?q?units:=20Add=20value=20of=20=CF=80=20*?= =?UTF-8?q?=2010=E2=81=B9?= Date: Mon, 27 Oct 2025 15:34:51 +0100 Message-ID: <20251027143850.2070427-3-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20251027143850.2070427-1-andriy.shevchenko@linux.intel.com> References: <20251027143850.2070427-1-andriy.shevchenko@linux.intel.com> Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit There are a few drivers that want to have this value, and at least one known to come soon. Let's define a value for them. Signed-off-by: Andy Shevchenko --- include/linux/units.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/linux/units.h b/include/linux/units.h index f626e212d4ca..82bdc2041328 100644 --- a/include/linux/units.h +++ b/include/linux/units.h @@ -21,6 +21,9 @@ #define PICO 1000000000000ULL #define FEMTO 1000000000000000ULL +/* Value of π * 10⁹ */ +#define PI 3141592653LL + /* Hz based multipliers */ #define NANOHZ_PER_HZ 1000000000UL #define MICROHZ_PER_HZ 1000000UL -- 2.50.1