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=-6.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FORGED_MUA_MOZILLA,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 D2973C3A5A0 for ; Mon, 20 Apr 2020 14:19:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B1596218AC for ; Mon, 20 Apr 2020 14:19:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="t2CozfZA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728555AbgDTOTu (ORCPT ); Mon, 20 Apr 2020 10:19:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47816 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1727890AbgDTOTt (ORCPT ); Mon, 20 Apr 2020 10:19:49 -0400 Received: from mail-pg1-x542.google.com (mail-pg1-x542.google.com [IPv6:2607:f8b0:4864:20::542]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DDA72C061A0C; Mon, 20 Apr 2020 07:19:49 -0700 (PDT) Received: by mail-pg1-x542.google.com with SMTP id x26so5106284pgc.10; Mon, 20 Apr 2020 07:19:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=message-id:subject:to:references:from:date:user-agent:mime-version :in-reply-to:content-transfer-encoding:content-language; bh=7B/LXMOm0voTdgUI+ifynbQOYjuUKN27/q+UqAFqkRc=; b=t2CozfZAPyz/NaYojLBmjI5RNpQfJfzQZC5gzRW4IivEIt3sPU9V8o/DMe7AeAMfOn zGjWvGF739M6yCv7E0bKpq323LKV3WuZ6KAL8GAdTPmD4z6ZIOfOXmdkUWYHxa24KGsd EfQurt9weJ3HbiqHEG+stMxZp2YNG71VNETnakc+mK3JJ9RTYxkQivogktXvNpFIzARE gGkLVhGvCeaUGEnjT6r0/Fbgofgc2LpMTRTVrkYOZkk539hOEAdYIVCu2QRN73vnwDqX B5aotR/Y+cO29c9kU5FTc9wotWEVbihrTbfp6u91UmxqiQrC3dxoTkE4Dh0cJNivRfVb ooDg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:subject:to:references:from:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=7B/LXMOm0voTdgUI+ifynbQOYjuUKN27/q+UqAFqkRc=; b=B9/wBQmmyD950XNsEBfuoR0rzc6O7TEoKEgxTMCcpS3MUTgl96CBIdVWTEweu8OXlR kA/gHoobwK/k8hscgSjr8QSBp+iIL2DfKeIc2lSIH1wslgeRlCuyqnShuod+5EGrK2OO OrJUzgQueDNYCtyKkqkZ1R30AFgMsX2WWa/NejUdd6+Aznjc8dgQtCS9tk+iN45yn9EV r9J/Z6Fxna0PjV4OrDTLGmL1ypQ9IRR7cUpiyXqwCQWNGxzqnIaxzimAnabQVZ4kkIGT 7Us3OxAgT42OwO3jDTMzNcSWNuBpYcKU3V/eBWryNHtmDF/M4fGTEzwpWKVJbp8Aszan iDcw== X-Gm-Message-State: AGi0Puaw7F+1rSU2CZDniKv04vrsohEX8GiqDeP6u3Kn0I6a1KCAtpLL J3Ezc63d2fl85VklczBp86dluEmG X-Google-Smtp-Source: APiQypKh9UX1CHQfTUvGuMYFpFinbgf83oyAr/Qc6skJXohPd+tQh798UPm0MPbRGreVNpQ1c3xYvg== X-Received: by 2002:a63:2a08:: with SMTP id q8mr1742352pgq.442.1587392389212; Mon, 20 Apr 2020 07:19:49 -0700 (PDT) Received: from [192.168.0.4] ([211.243.117.64]) by smtp.gmail.com with ESMTPSA id o63sm1378702pjb.40.2020.04.20.07.19.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 20 Apr 2020 07:19:48 -0700 (PDT) Message-ID: <5e9daf84.1c69fb81.7404a.34ba@mx.google.com> Subject: Re: [PATCH v8 3/3] tty: samsung_tty: 32-bit access for TX/RX hold registers To: Hyunki Koo , Kukjin Kim , Krzysztof Kozlowski , Greg Kroah-Hartman , Jiri Slaby , linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org References: <20200420013300.17249-1-hyunki00.koo@samsung.com> <20200420013300.17249-3-hyunki00.koo@samsung.com> From: Hyunki Koo Date: Mon, 20 Apr 2020 23:19:44 +0900 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <20200420013300.17249-3-hyunki00.koo@samsung.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org sorry, cover-letter [PATCH v8 0/3] does not sent, I will send cover letter tomorrow all information of version control is included in cover letter. On 20. 4. 20. 오전 10:32, Hyunki Koo wrote: > Support 32-bit access for the TX/RX hold registers UTXH and URXH. > > This is required for some newer SoCs. > > Signed-off-by: Hyunki Koo > --- > drivers/tty/serial/samsung_tty.c | 62 ++++++++++++++++++++++++++++++++++++---- > 1 file changed, 57 insertions(+), 5 deletions(-) > > diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c > index 326b0164609c..bdf1d4d12cb1 100644 > --- a/drivers/tty/serial/samsung_tty.c > +++ b/drivers/tty/serial/samsung_tty.c > @@ -154,12 +154,47 @@ struct s3c24xx_uart_port { > #define portaddrl(port, reg) \ > ((unsigned long *)(unsigned long)((port)->membase + (reg))) > > -#define rd_reg(port, reg) (readb_relaxed(portaddr(port, reg))) > +static u32 rd_reg(struct uart_port *port, u32 reg) > +{ > + switch (port->iotype) { > + case UPIO_MEM: > + return readb_relaxed(portaddr(port, reg)); > + case UPIO_MEM32: > + return readl_relaxed(portaddr(port, reg)); > + default: > + return 0; > + } > + return 0; > +} > + > #define rd_regl(port, reg) (readl_relaxed(portaddr(port, reg))) > > -#define wr_reg(port, reg, val) writeb_relaxed(val, portaddr(port, reg)) > +static void wr_reg(struct uart_port *port, u32 reg, u32 val) > +{ > + switch (port->iotype) { > + case UPIO_MEM: > + writeb_relaxed(val, portaddr(port, reg)); > + break; > + case UPIO_MEM32: > + writel_relaxed(val, portaddr(port, reg)); > + break; > + } > +} > + > #define wr_regl(port, reg, val) writel_relaxed(val, portaddr(port, reg)) > > +static void wr_reg_barrier(struct uart_port *port, u32 reg, u32 val) > +{ > + switch (port->iotype) { > + case UPIO_MEM: > + writeb(val, portaddr(port, reg)); > + break; > + case UPIO_MEM32: > + writel(val, portaddr(port, reg)); > + break; > + } > +} > + > /* Byte-order aware bit setting/clearing functions. */ > > static inline void s3c24xx_set_bit(struct uart_port *port, int idx, > @@ -1974,7 +2009,7 @@ static int s3c24xx_serial_probe(struct platform_device *pdev) > struct device_node *np = pdev->dev.of_node; > struct s3c24xx_uart_port *ourport; > int index = probe_index; > - int ret; > + int ret, prop = 0; > > if (np) { > ret = of_alias_get_id(np, "serial"); > @@ -2000,10 +2035,27 @@ static int s3c24xx_serial_probe(struct platform_device *pdev) > dev_get_platdata(&pdev->dev) : > ourport->drv_data->def_cfg; > > - if (np) > + if (np) { > of_property_read_u32(np, > "samsung,uart-fifosize", &ourport->port.fifosize); > > + if (of_property_read_u32(np, "reg-io-width", &prop) == 0) { > + switch (prop) { > + case 1: > + ourport->port.iotype = UPIO_MEM; > + break; > + case 4: > + ourport->port.iotype = UPIO_MEM32; > + break; > + default: > + dev_warn(&pdev->dev, "unsupported reg-io-width (%d)\n", > + prop); > + ret = -EINVAL; > + break; > + } > + } > + } > + > if (ourport->drv_data->fifosize[index]) > ourport->port.fifosize = ourport->drv_data->fifosize[index]; > else if (ourport->info->fifosize) > @@ -2612,7 +2664,7 @@ static void samsung_early_putc(struct uart_port *port, int c) > else > samsung_early_busyuart(port); > > - writeb(c, port->membase + S3C2410_UTXH); > + wr_reg_barrier(port, S3C2410_UTXH, c); > } > > static void samsung_early_write(struct console *con, const char *s, 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=-6.4 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FORGED_MUA_MOZILLA,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 7BEE7C3815B for ; Mon, 20 Apr 2020 14:19:59 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher 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Apr 2020 07:19:48 -0700 (PDT) Message-ID: <5e9daf84.1c69fb81.7404a.34ba@mx.google.com> Subject: Re: [PATCH v8 3/3] tty: samsung_tty: 32-bit access for TX/RX hold registers To: Hyunki Koo , Kukjin Kim , Krzysztof Kozlowski , Greg Kroah-Hartman , Jiri Slaby , linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org References: <20200420013300.17249-1-hyunki00.koo@samsung.com> <20200420013300.17249-3-hyunki00.koo@samsung.com> From: Hyunki Koo Date: Mon, 20 Apr 2020 23:19:44 +0900 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <20200420013300.17249-3-hyunki00.koo@samsung.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200420_071951_599246_CBDCD491 X-CRM114-Status: GOOD ( 19.59 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org c29ycnksIGNvdmVyLWxldHRlciBbUEFUQ0ggdjggMC8zXSBkb2VzIG5vdCBzZW50LCBJIHdpbGwg c2VuZCBjb3ZlciAKbGV0dGVyIHRvbW9ycm93CgphbGwgaW5mb3JtYXRpb24gb2YgdmVyc2lvbiBj b250cm9sIGlzIGluY2x1ZGVkIGluIGNvdmVyIGxldHRlci4KCk9uIDIwLiA0LiAyMC4g7Jik7KCE IDEwOjMyLCBIeXVua2kgS29vIHdyb3RlOgo+IFN1cHBvcnQgMzItYml0IGFjY2VzcyBmb3IgdGhl IFRYL1JYIGhvbGQgcmVnaXN0ZXJzIFVUWEggYW5kIFVSWEguCj4KPiBUaGlzIGlzIHJlcXVpcmVk IGZvciBzb21lIG5ld2VyIFNvQ3MuCj4KPiBTaWduZWQtb2ZmLWJ5OiBIeXVua2kgS29vIDxoeXVu a2kwMC5rb29Ac2Ftc3VuZy5jb20+Cj4gLS0tCj4gICBkcml2ZXJzL3R0eS9zZXJpYWwvc2Ftc3Vu Z190dHkuYyB8IDYyICsrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKy0tLS0KPiAg 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