diff mbox series

[5.10.y-cip,10/29] units: Add SI metric prefix definitions

Message ID	20220404123553.25851-11-prabhakar.mahadev-lad.rj@bp.renesas.com (mailing list archive)
State	New
Headers	show X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from relmlie6.idc.renesas.com (relmlie6.idc.renesas.com [210.160.252.172]) by mx.groups.io with SMTP id smtpd.web11.34415.1649075760888079755 for <cip-dev@lists.cip-project.org>; Mon, 04 Apr 2022 05:36:09 -0700 Authentication-Results: mx.groups.io; dkim=missing; spf=pass (domain: bp.renesas.com, ip: 210.160.252.172, mailfrom: prabhakar.mahadev-lad.rj@bp.renesas.com) X-IronPort-AV: E=Sophos;i="5.90,234,1643641200"; d="scan'208";a="116695153" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 04 Apr 2022 21:36:08 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id E7150428553C; Mon, 4 Apr 2022 21:36:07 +0900 (JST) From: "Lad Prabhakar" <prabhakar.mahadev-lad.rj@bp.renesas.com> To: cip-dev@lists.cip-project.org, Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>, Pavel Machek <pavel@denx.de> Cc: Biju Das <biju.das.jz@bp.renesas.com> Subject: [PATCH 5.10.y-cip 10/29] units: Add SI metric prefix definitions Date: Mon, 4 Apr 2022 13:35:34 +0100 Message-Id: <20220404123553.25851-11-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220404123553.25851-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20220404123553.25851-1-prabhakar.mahadev-lad.rj@bp.renesas.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="utf-8" List-Id: <cip-dev.lists.cip-project.org>
Series	Add RSPI/OSTM/WDT/TSU/OPP support to Renesas RZ/G2L SoC \| expand [5.10.y-cip,00/29] Add RSPI/OSTM/WDT/TSU/OPP support to Renesas RZ/G2L SoC [5.10.y-cip,01/29] clk: renesas: r9a07g044: Add RSPI clock and reset entries [5.10.y-cip,02/29] spi: dt-bindings: renesas,rspi: Document RZ/G2L SoC [5.10.y-cip,03/29] spi: spi-rspi: Add support to deassert/assert reset line [5.10.y-cip,04/29] spi: spi-rspi: Drop redeclaring ret variable in qspi_transfer_in() [5.10.y-cip,05/29] arm64: dts: renesas: r9a07g044: Add RSPI{0,1,2} nodes [5.10.y-cip,06/29] arm64: dts: renesas: rzg2l-smarc: Enable RSPI1 on carrier board [5.10.y-cip,07/29] clk: renesas: r9a07g044: Add WDT clock and reset entries [5.10.y-cip,08/29] clk: renesas: r9a07g044: Rename CLK_PLL2_DIV16 and CLK_PLL2_DIV20 macros [5.10.y-cip,09/29] dt-bindings: watchdog: renesas,wdt: Add support for RZ/G2L [5.10.y-cip,10/29] units: Add SI metric prefix definitions [5.10.y-cip,11/29] watchdog: Add Watchdog Timer driver for RZ/G2L [5.10.y-cip,12/29] clk: renesas: r9a07g044: Add OSTM clock and reset entries [5.10.y-cip,13/29] dt-bindings: timer: renesas: ostm: Document Renesas RZ/G2L OSTM [5.10.y-cip,14/29] reset: Add of_reset_control_get_optional_exclusive() [5.10.y-cip,15/29] clocksource/drivers/renesas-ostm: Add RZ/G2L OSTM support [5.10.y-cip,16/29] clocksource/drivers/renesas,ostm: Make RENESAS_OSTM symbol visible [5.10.y-cip,17/29] arm64: dts: renesas: r9a07g044: Add OSTM nodes [5.10.y-cip,18/29] arm64: dts: renesas: rzg2l-smarc-som: Enable OSTM [5.10.y-cip,19/29] arm64: dts: renesas: r9a07g044: Add WDT nodes [5.10.y-cip,20/29] arm64: dts: renesas: rzg2l-smarc-som: Enable watchdog [5.10.y-cip,21/29] clk: renesas: r9a07g044: Change core clock "I" from DEF_FIXED->DEF_DIV [5.10.y-cip,22/29] clk: renesas: r9a07g044: Add TSU clock and reset entry [5.10.y-cip,23/29] clk: renesas: r9a07g044: Rename CLK_PLL3_DIV4 macro [5.10.y-cip,24/29] clk: renesas: rzg2l: Add CPG_PL1_DDIV macro [5.10.y-cip,25/29] dt-bindings: thermal: Document Renesas RZ/G2L TSU [5.10.y-cip,26/29] thermal/drivers: Add TSU driver for RZ/G2L [5.10.y-cip,27/29] arm64: dts: renesas: r9a07g044: Add OPP table [5.10.y-cip,28/29] arm64: dts: renesas: r9a07g044: Add TSU node [5.10.y-cip,29/29] arm64: dts: renesas: r9a07g044: Create thermal zone to support IPA

Commit Message

Lad Prabhakar April 4, 2022, 12:35 p.m. UTC

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

commit 26471d4a6cf8d5d0bd0fb55c7169de7d67cc703a upstream.

Sometimes it's useful to have well-defined SI metric prefix to be used
to self-describe the formulas or equations.

List most popular ones in the units.h.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
[PL: Manually applied the changes]
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 include/linux/units.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff mbox series

Patch

diff --git a/include/linux/units.h b/include/linux/units.h
index aaf716364ec3..e44b9581f20a 100644
--- a/include/linux/units.h
+++ b/include/linux/units.h
@@ -4,6 +4,22 @@ 
 
 #include <linux/kernel.h>
 
+/* Metric prefixes in accordance with Système international (d'unités) */
+#define PETA   1000000000000000ULL
+#define TERA   1000000000000ULL
+#define GIGA   1000000000UL
+#define MEGA   1000000UL
+#define KILO   1000UL
+#define HECTO  100UL
+#define DECA   10UL
+#define DECI   10UL
+#define CENTI  100UL
+#define MILLI  1000UL
+#define MICRO  1000000UL
+#define NANO   1000000000UL
+#define PICO   1000000000000ULL
+#define FEMTO  1000000000000000ULL
+
 #define ABSOLUTE_ZERO_MILLICELSIUS -273150
 
 static inline long milli_kelvin_to_millicelsius(long t)