From patchwork Wed Jul 1 09:43:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biwen Li X-Patchwork-Id: 1321042 X-Patchwork-Delegate: priyanka.jain@nxp.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=oss.nxp.com Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 49y9xY2vTVz9sR4 for ; Thu, 2 Jul 2020 18:19:45 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id E16AC81B80; Thu, 2 Jul 2020 10:17:45 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=oss.nxp.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id 8344381B47; Wed, 1 Jul 2020 11:49:36 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SUBJ_OBFU_PUNCT_FEW,SUBJ_OBFU_PUNCT_MANY,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.2 Received: from inva021.nxp.com (inva021.nxp.com [92.121.34.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 185098006D for ; Wed, 1 Jul 2020 11:49:32 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=oss.nxp.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=biwen.li@oss.nxp.com Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 6F55320049A; Wed, 1 Jul 2020 11:49:32 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id DC0BB2004C2; Wed, 1 Jul 2020 11:49:29 +0200 (CEST) Received: from localhost.localdomain (mega.ap.freescale.net [10.192.208.232]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 8E19B402A0; Wed, 1 Jul 2020 17:49:26 +0800 (SGT) From: Biwen Li To: jagdish.gediya@nxp.com, priyanka.jain@nxp.com Cc: jiafei.pan@nxp.com, u-boot@lists.denx.de, Biwen Li Subject: [PATCH 1/5] i2c: mxc: move i2c_early_init_f to common function Date: Wed, 1 Jul 2020 17:43:26 +0800 Message-Id: <20200701094330.27091-1-biwen.li@oss.nxp.com> X-Mailer: git-send-email 2.17.1 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.102.3 at phobos.denx.de X-Virus-Status: Clean From: Biwen Li Move i2c_early_init_f to common function to initialize baudrate of i2c Signed-off-by: Biwen Li --- drivers/i2c/mxc_i2c.c | 138 +++++++++++++++++++++++++------------------------- 1 file changed, 70 insertions(+), 68 deletions(-) diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c index a03c465..1cc1f50 100644 --- a/drivers/i2c/mxc_i2c.c +++ b/drivers/i2c/mxc_i2c.c @@ -4,6 +4,7 @@ * * (c) 2007 Pengutronix, Sascha Hauer * (c) 2011 Marek Vasut + * Copyright 2020 NXP * * Based on i2c-imx.c from linux kernel: * Copyright (C) 2005 Torsten Koschorrek @@ -338,6 +339,57 @@ static int i2c_init_transfer_(struct mxc_i2c_bus *i2c_bus, u8 chip, return 0; } +#if !defined(I2C2_BASE_ADDR) +#define I2C2_BASE_ADDR 0 +#endif + +#if !defined(I2C3_BASE_ADDR) +#define I2C3_BASE_ADDR 0 +#endif + +#if !defined(I2C4_BASE_ADDR) +#define I2C4_BASE_ADDR 0 +#endif + +#if !defined(I2C5_BASE_ADDR) +#define I2C5_BASE_ADDR 0 +#endif + +#if !defined(I2C6_BASE_ADDR) +#define I2C6_BASE_ADDR 0 +#endif + +#if !defined(I2C7_BASE_ADDR) +#define I2C7_BASE_ADDR 0 +#endif + +#if !defined(I2C8_BASE_ADDR) +#define I2C8_BASE_ADDR 0 +#endif + +static struct mxc_i2c_bus mxc_i2c_buses[] = { +#if defined(CONFIG_ARCH_LS1021A) || defined(CONFIG_VF610) || \ + defined(CONFIG_FSL_LAYERSCAPE) + { 0, I2C1_BASE_ADDR, I2C_QUIRK_FLAG }, + { 1, I2C2_BASE_ADDR, I2C_QUIRK_FLAG }, + { 2, I2C3_BASE_ADDR, I2C_QUIRK_FLAG }, + { 3, I2C4_BASE_ADDR, I2C_QUIRK_FLAG }, + { 4, I2C5_BASE_ADDR, I2C_QUIRK_FLAG }, + { 5, I2C6_BASE_ADDR, I2C_QUIRK_FLAG }, + { 6, I2C7_BASE_ADDR, I2C_QUIRK_FLAG }, + { 7, I2C8_BASE_ADDR, I2C_QUIRK_FLAG }, +#else + { 0, I2C1_BASE_ADDR, 0 }, + { 1, I2C2_BASE_ADDR, 0 }, + { 2, I2C3_BASE_ADDR, 0 }, + { 3, I2C4_BASE_ADDR, 0 }, + { 4, I2C5_BASE_ADDR, 0 }, + { 5, I2C6_BASE_ADDR, 0 }, + { 6, I2C7_BASE_ADDR, 0 }, + { 7, I2C8_BASE_ADDR, 0 }, +#endif +}; + #ifndef CONFIG_DM_I2C int i2c_idle_bus(struct mxc_i2c_bus *i2c_bus) { @@ -431,6 +483,24 @@ exit: return ret; } #endif +/* + * Early init I2C for prepare read the clk through I2C. + */ +void i2c_early_init_f(void) +{ + ulong base = mxc_i2c_buses[I2C_EARLY_INIT_INDEX].base; + bool quirk = mxc_i2c_buses[I2C_EARLY_INIT_INDEX].driver_data + & I2C_QUIRK_FLAG ? true : false; + int reg_shift = quirk ? VF610_I2C_REGSHIFT : IMX_I2C_REGSHIFT; + + /* Set I2C divider value */ + writeb(I2C_IFDR_DIV_CONSERVATIVE, base + (IFDR << reg_shift)); + /* Reset module */ + writeb(I2CR_IDIS, base + (I2CR << reg_shift)); + writeb(0, base + (I2SR << reg_shift)); + /* Enable I2C */ + writeb(I2CR_IEN, base + (I2CR << reg_shift)); +} static int i2c_init_transfer(struct mxc_i2c_bus *i2c_bus, u8 chip, u32 addr, int alen) @@ -659,57 +729,6 @@ static int bus_i2c_write(struct mxc_i2c_bus *i2c_bus, u8 chip, u32 addr, return ret; } -#if !defined(I2C2_BASE_ADDR) -#define I2C2_BASE_ADDR 0 -#endif - -#if !defined(I2C3_BASE_ADDR) -#define I2C3_BASE_ADDR 0 -#endif - -#if !defined(I2C4_BASE_ADDR) -#define I2C4_BASE_ADDR 0 -#endif - -#if !defined(I2C5_BASE_ADDR) -#define I2C5_BASE_ADDR 0 -#endif - -#if !defined(I2C6_BASE_ADDR) -#define I2C6_BASE_ADDR 0 -#endif - -#if !defined(I2C7_BASE_ADDR) -#define I2C7_BASE_ADDR 0 -#endif - -#if !defined(I2C8_BASE_ADDR) -#define I2C8_BASE_ADDR 0 -#endif - -static struct mxc_i2c_bus mxc_i2c_buses[] = { -#if defined(CONFIG_ARCH_LS1021A) || defined(CONFIG_VF610) || \ - defined(CONFIG_FSL_LAYERSCAPE) - { 0, I2C1_BASE_ADDR, I2C_QUIRK_FLAG }, - { 1, I2C2_BASE_ADDR, I2C_QUIRK_FLAG }, - { 2, I2C3_BASE_ADDR, I2C_QUIRK_FLAG }, - { 3, I2C4_BASE_ADDR, I2C_QUIRK_FLAG }, - { 4, I2C5_BASE_ADDR, I2C_QUIRK_FLAG }, - { 5, I2C6_BASE_ADDR, I2C_QUIRK_FLAG }, - { 6, I2C7_BASE_ADDR, I2C_QUIRK_FLAG }, - { 7, I2C8_BASE_ADDR, I2C_QUIRK_FLAG }, -#else - { 0, I2C1_BASE_ADDR, 0 }, - { 1, I2C2_BASE_ADDR, 0 }, - { 2, I2C3_BASE_ADDR, 0 }, - { 3, I2C4_BASE_ADDR, 0 }, - { 4, I2C5_BASE_ADDR, 0 }, - { 5, I2C6_BASE_ADDR, 0 }, - { 6, I2C7_BASE_ADDR, 0 }, - { 7, I2C8_BASE_ADDR, 0 }, -#endif -}; - struct mxc_i2c_bus *i2c_get_base(struct i2c_adapter *adap) { return &mxc_i2c_buses[adap->hwadapnr]; @@ -767,24 +786,7 @@ void bus_i2c_init(int index, int speed, int unused, bus_i2c_set_bus_speed(&mxc_i2c_buses[index], speed); } -/* - * Early init I2C for prepare read the clk through I2C. - */ -void i2c_early_init_f(void) -{ - ulong base = mxc_i2c_buses[I2C_EARLY_INIT_INDEX].base; - bool quirk = mxc_i2c_buses[I2C_EARLY_INIT_INDEX].driver_data - & I2C_QUIRK_FLAG ? true : false; - int reg_shift = quirk ? VF610_I2C_REGSHIFT : IMX_I2C_REGSHIFT; - /* Set I2C divider value */ - writeb(I2C_IFDR_DIV_CONSERVATIVE, base + (IFDR << reg_shift)); - /* Reset module */ - writeb(I2CR_IDIS, base + (I2CR << reg_shift)); - writeb(0, base + (I2SR << reg_shift)); - /* Enable I2C */ - writeb(I2CR_IEN, base + (I2CR << reg_shift)); -} /* * Init I2C Bus