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=-13.9 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 1E862C433E9 for ; Tue, 30 Mar 2021 14:23:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E30CC619CB for ; Tue, 30 Mar 2021 14:23:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232087AbhC3OWj (ORCPT ); Tue, 30 Mar 2021 10:22:39 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:14641 "EHLO szxga04-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232002AbhC3OWK (ORCPT ); Tue, 30 Mar 2021 10:22:10 -0400 Received: from DGGEMS402-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4F8s5T4FkhznWLP; Tue, 30 Mar 2021 22:19:25 +0800 (CST) Received: from localhost.localdomain (10.67.165.24) by DGGEMS402-HUB.china.huawei.com (10.3.19.202) with Microsoft SMTP Server id 14.3.498.0; Tue, 30 Mar 2021 22:21:56 +0800 From: Yicong Yang To: , , , , CC: , , , , , , , , , Subject: [PATCH v5 2/5] i2c: core: add api to provide frequency mode strings Date: Tue, 30 Mar 2021 22:19:23 +0800 Message-ID: <1617113966-40498-3-git-send-email-yangyicong@hisilicon.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1617113966-40498-1-git-send-email-yangyicong@hisilicon.com> References: <1617113966-40498-1-git-send-email-yangyicong@hisilicon.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.67.165.24] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some I2C drivers like Designware and HiSilicon will print the bus frequency mode information, so add a public one that everyone can make use of. Reviewed-by: Andy Shevchenko Signed-off-by: Yicong Yang --- include/linux/i2c.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 10bd0b0..6837e64 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -47,6 +47,26 @@ typedef int (*i2c_slave_cb_t)(struct i2c_client *client, #define I2C_MAX_HIGH_SPEED_MODE_FREQ 3400000 #define I2C_MAX_ULTRA_FAST_MODE_FREQ 5000000 +static inline const char *i2c_freq_mode_string(u32 bus_freq_hz) +{ + switch (bus_freq_hz) { + case I2C_MAX_STANDARD_MODE_FREQ: + return "Standard Mode(100KHz)"; + case I2C_MAX_FAST_MODE_FREQ: + return "Fast Mode(400KHz)"; + case I2C_MAX_FAST_MODE_PLUS_FREQ: + return "Fast Mode Plus(1.0MHz)"; + case I2C_MAX_TURBO_MODE_FREQ: + return "Turbo Mode(1.4MHz)"; + case I2C_MAX_HIGH_SPEED_MODE_FREQ: + return "High Speed Mode(3.4MHz)"; + case I2C_MAX_ULTRA_FAST_MODE_FREQ: + return "Ultra Fast Mode(5.0MHz)"; + default: + return "Unknown Mode"; + } +} + struct module; struct property_entry; -- 2.8.1