From patchwork Sat Jul 2 13:59:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 587060 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B85FACCA482 for ; Sat, 2 Jul 2022 13:59:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231978AbiGBN7g (ORCPT ); Sat, 2 Jul 2022 09:59:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47038 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230155AbiGBN7f (ORCPT ); Sat, 2 Jul 2022 09:59:35 -0400 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 52635BE25; Sat, 2 Jul 2022 06:59:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1656770374; x=1688306374; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=aum+UD8Fi4aVMEBrhQK8X7w7WaoAtKiqdmgIuZeVwUo=; b=PIrk/bJjf6+ae68kZEPN1VAGROmmTsFGae831yz/ODg1TOdwgbuJ+bL+ 76R+almwfRdN3Lkh8Eu6mw22KaJIrhpk7ceFZ8bthbsEbyV3foNSCFTFV eMv2XwQdNnUkz37AssNBspitl5La5qy5Uc4t3d83lj8VrmyJyr0Tt2J+l BHq8M+CqzgzePbeYQPppbPQk+tB/n7nKTWD5flkt7AQhq1EdJeERpNESb qZimkuhIAjY/0jJLgGsp6NARTZDgw8+vUJqCedX65OoV1T+GjoCDx6/29 wVa9Y0WDMIhJqj2SurwUm3ZXbX+Rnw5PcN6YI3AH63KkkLijQWiwOvyzI A==; X-IronPort-AV: E=McAfee;i="6400,9594,10395"; a="265865078" X-IronPort-AV: E=Sophos;i="5.92,240,1650956400"; d="scan'208";a="265865078" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Jul 2022 06:59:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.92,240,1650956400"; d="scan'208";a="718918065" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga004.jf.intel.com with ESMTP; 02 Jul 2022 06:59:29 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id A59A2D9; Sat, 2 Jul 2022 16:59:35 +0300 (EEST) From: Andy Shevchenko To: Andy Shevchenko , Wolfram Sang , Michael Walle , Krzysztof Kozlowski , Sam Protsenko , Lucas De Marchi , linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-renesas-soc@vger.kernel.org Cc: Codrin Ciubotariu , Nicolas Ferre , Alexandre Belloni , Claudiu Beznea , Krzysztof Kozlowski , Alim Akhtar , Till Harbaum , Wolfram Sang Subject: [PATCH v1 2/2] i2c: Introduce i2c_str_read_write() and make use of it Date: Sat, 2 Jul 2022 16:59:25 +0300 Message-Id: <20220702135925.73406-2-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220702135925.73406-1-andriy.shevchenko@linux.intel.com> References: <20220702135925.73406-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org str_read_write() returns a string literal "read" or "write" based on the value. It also allows to unify usage of a such in the kernel. For i2c case introduce a wrapper that takes struct i2c_msg as parameter. Signed-off-by: Andy Shevchenko --- drivers/i2c/algos/i2c-algo-pca.c | 3 +-- drivers/i2c/algos/i2c-algo-pcf.c | 3 +-- drivers/i2c/busses/i2c-at91-master.c | 3 +-- drivers/i2c/busses/i2c-exynos5.c | 3 +-- drivers/i2c/busses/i2c-hix5hd2.c | 3 +-- drivers/i2c/busses/i2c-img-scb.c | 5 ++--- drivers/i2c/busses/i2c-sh_mobile.c | 3 +-- drivers/i2c/busses/i2c-tiny-usb.c | 6 ++---- drivers/i2c/busses/i2c-viperboard.c | 6 ++---- drivers/i2c/i2c-core-base.c | 3 +-- include/linux/i2c.h | 7 +++++++ 11 files changed, 20 insertions(+), 25 deletions(-) diff --git a/drivers/i2c/algos/i2c-algo-pca.c b/drivers/i2c/algos/i2c-algo-pca.c index 384af88e58ad..e5ac3eee7a99 100644 --- a/drivers/i2c/algos/i2c-algo-pca.c +++ b/drivers/i2c/algos/i2c-algo-pca.c @@ -119,8 +119,7 @@ static int pca_address(struct i2c_algo_pca_data *adap, int sta = pca_get_con(adap); int addr = i2c_8bit_addr_from_msg(msg); - DEB2("=== SLAVE ADDRESS %#04x+%c=%#04x\n", - msg->addr, msg->flags & I2C_M_RD ? 'R' : 'W', addr); + DEB2("=== SLAVE ADDRESS %#04x+%s=%#04x\n", msg->addr, i2c_str_read_write(msg), addr); pca_outw(adap, I2C_PCA_DAT, addr); diff --git a/drivers/i2c/algos/i2c-algo-pcf.c b/drivers/i2c/algos/i2c-algo-pcf.c index 7a01f2687b4c..232224bbd670 100644 --- a/drivers/i2c/algos/i2c-algo-pcf.c +++ b/drivers/i2c/algos/i2c-algo-pcf.c @@ -316,8 +316,7 @@ static int pcf_xfer(struct i2c_adapter *i2c_adap, pmsg = &msgs[i]; DEB2(printk(KERN_DEBUG "i2c-algo-pcf.o: Doing %s %d bytes to 0x%02x - %d of %d messages\n", - pmsg->flags & I2C_M_RD ? "read" : "write", - pmsg->len, pmsg->addr, i + 1, num);) + i2c_str_read_write(pmsg), pmsg->len, pmsg->addr, i + 1, num);) ret = pcf_doAddress(adap, pmsg); diff --git a/drivers/i2c/busses/i2c-at91-master.c b/drivers/i2c/busses/i2c-at91-master.c index c0c35785a0dc..3761a6cb320f 100644 --- a/drivers/i2c/busses/i2c-at91-master.c +++ b/drivers/i2c/busses/i2c-at91-master.c @@ -523,8 +523,7 @@ static int at91_do_twi_transfer(struct at91_twi_dev *dev) * writing the corresponding bit into the Control Register. */ - dev_dbg(dev->dev, "transfer: %s %zu bytes.\n", - (dev->msg->flags & I2C_M_RD) ? "read" : "write", dev->buf_len); + dev_dbg(dev->dev, "transfer: %s %zu bytes.\n", i2c_str_read_write(dev->msg), dev->buf_len); reinit_completion(&dev->cmd_complete); dev->transfer_status = 0; diff --git a/drivers/i2c/busses/i2c-exynos5.c b/drivers/i2c/busses/i2c-exynos5.c index b812d1090c0f..cbac64042760 100644 --- a/drivers/i2c/busses/i2c-exynos5.c +++ b/drivers/i2c/busses/i2c-exynos5.c @@ -744,8 +744,7 @@ static int exynos5_i2c_xfer_msg(struct exynos5_i2c *i2c, if (ret < 0) { exynos5_i2c_reset(i2c); if (ret == -ETIMEDOUT) - dev_warn(i2c->dev, "%s timeout\n", - (msgs->flags & I2C_M_RD) ? "rx" : "tx"); + dev_warn(i2c->dev, "%s timeout\n", i2c_str_read_write(msgs); } /* Return the state as in interrupt routine */ diff --git a/drivers/i2c/busses/i2c-hix5hd2.c b/drivers/i2c/busses/i2c-hix5hd2.c index 61ae58f57047..fefa5db52138 100644 --- a/drivers/i2c/busses/i2c-hix5hd2.c +++ b/drivers/i2c/busses/i2c-hix5hd2.c @@ -332,8 +332,7 @@ static int hix5hd2_i2c_xfer_msg(struct hix5hd2_i2c_priv *priv, if (timeout == 0) { priv->state = HIX5I2C_STAT_RW_ERR; priv->err = -ETIMEDOUT; - dev_warn(priv->dev, "%s timeout=%d\n", - msgs->flags & I2C_M_RD ? "rx" : "tx", + dev_warn(priv->dev, "%s timeout=%d\n", i2c_str_read_write(msgs), priv->adap.timeout); } ret = priv->state; diff --git a/drivers/i2c/busses/i2c-img-scb.c b/drivers/i2c/busses/i2c-img-scb.c index 8e987945ed45..772443059f49 100644 --- a/drivers/i2c/busses/i2c-img-scb.c +++ b/drivers/i2c/busses/i2c-img-scb.c @@ -950,9 +950,8 @@ static irqreturn_t img_i2c_isr(int irq, void *dev_id) INT_FIFO_EMPTY | INT_FIFO_FULL))) { dev_crit(i2c->adap.dev.parent, - "fatal: clock low timeout occurred %s addr 0x%02x\n", - (i2c->msg.flags & I2C_M_RD) ? "reading" : "writing", - i2c->msg.addr); + "fatal: clock low timeout occurred when %s addr 0x%02x\n", + i2c_str_read_write(&i2c->msg), i2c->msg.addr); hret = ISR_FATAL(EIO); goto out; } diff --git a/drivers/i2c/busses/i2c-sh_mobile.c b/drivers/i2c/busses/i2c-sh_mobile.c index 72f024a0c363..2b569403ce71 100644 --- a/drivers/i2c/busses/i2c-sh_mobile.c +++ b/drivers/i2c/busses/i2c-sh_mobile.c @@ -409,8 +409,7 @@ static irqreturn_t sh_mobile_i2c_isr(int irq, void *dev_id) pd->sr |= sr; /* remember state */ dev_dbg(pd->dev, "i2c_isr 0x%02x 0x%02x %s %d %d!\n", sr, pd->sr, - (pd->msg->flags & I2C_M_RD) ? "read" : "write", - pd->pos, pd->msg->len); + i2c_str_read_write(pd->msg), pd->pos, pd->msg->len); /* Kick off TxDMA after preface was done */ if (pd->dma_direction == DMA_TO_DEVICE && pd->pos == 0) diff --git a/drivers/i2c/busses/i2c-tiny-usb.c b/drivers/i2c/busses/i2c-tiny-usb.c index 7279ca0eaa2d..74a435d7c308 100644 --- a/drivers/i2c/busses/i2c-tiny-usb.c +++ b/drivers/i2c/busses/i2c-tiny-usb.c @@ -71,10 +71,8 @@ static int usb_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs, int num) pmsg = &msgs[i]; - dev_dbg(&adapter->dev, - " %d: %s (flags %d) %d bytes to 0x%02x\n", - i, pmsg->flags & I2C_M_RD ? "read" : "write", - pmsg->flags, pmsg->len, pmsg->addr); + dev_dbg(&adapter->dev, " %d: %s (flags %d) %d bytes to 0x%02x\n", + i, i2c_str_read_write(pmsg), pmsg->flags, pmsg->len, pmsg->addr); /* and directly send the message */ if (pmsg->flags & I2C_M_RD) { diff --git a/drivers/i2c/busses/i2c-viperboard.c b/drivers/i2c/busses/i2c-viperboard.c index 8b5322c3bce0..dec12e904aca 100644 --- a/drivers/i2c/busses/i2c-viperboard.c +++ b/drivers/i2c/busses/i2c-viperboard.c @@ -278,10 +278,8 @@ static int vprbrd_i2c_xfer(struct i2c_adapter *i2c, struct i2c_msg *msgs, for (i = 0 ; i < num ; i++) { pmsg = &msgs[i]; - dev_dbg(&i2c->dev, - " %d: %s (flags %d) %d bytes to 0x%02x\n", - i, pmsg->flags & I2C_M_RD ? "read" : "write", - pmsg->flags, pmsg->len, pmsg->addr); + dev_dbg(&i2c->dev, " %d: %s (flags %d) %d bytes to 0x%02x\n", + i, i2c_str_read_write(pmsg), pmsg->flags, pmsg->len, pmsg->addr); mutex_lock(&vb->lock); /* directly send the message */ diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index 94c0663a39a6..9811bb44a2e0 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -2004,8 +2004,7 @@ module_exit(i2c_exit); static int i2c_quirk_error(struct i2c_adapter *adap, struct i2c_msg *msg, char *err_msg) { dev_err_ratelimited(&adap->dev, "adapter quirk: %s (addr 0x%04x, size %u, %s)\n", - err_msg, msg->addr, msg->len, - msg->flags & I2C_M_RD ? "read" : "write"); + err_msg, msg->addr, msg->len, i2c_str_read_write(msg)); return -EOPNOTSUPP; } diff --git a/include/linux/i2c.h b/include/linux/i2c.h index fbda5ada2afc..3cfaad39cc24 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -20,7 +20,9 @@ #include #include /* for Host Notify IRQ */ #include /* for struct device_node */ +#include /* for str_read_write() */ #include /* for swab16 */ + #include extern struct bus_type i2c_bus_type; @@ -934,6 +936,11 @@ static inline u8 i2c_8bit_addr_from_msg(const struct i2c_msg *msg) return (msg->addr << 1) | (msg->flags & I2C_M_RD ? 1 : 0); } +static inline const char *i2c_str_read_write(const struct i2c_msg *msg) +{ + return str_read_write(msg->flags & I2C_M_RD); +} + u8 *i2c_get_dma_safe_msg_buf(struct i2c_msg *msg, unsigned int threshold); void i2c_put_dma_safe_msg_buf(u8 *buf, struct i2c_msg *msg, bool xferred);