[{"id":1777364,"web_url":"http://patchwork.ozlabs.org/comment/1777364/","msgid":"<7fa5af55-f94e-518f-e12c-c79823a3120b@gmail.com>","list_archive_url":null,"date":"2017-09-29T06:12:31","subject":"Re: [U-Boot] [PATCH v1 1/6] serial: stm32x7: cleanup code","submitter":{"id":13793,"url":"http://patchwork.ozlabs.org/api/people/13793/","name":"Bo Shen","email":"voice.shen@gmail.com"},"content":"Hi Patrice,\n\nOn 09/27/2017 06:44 AM, patrice.chotard@st.com wrote:\n> From: Patrice Chotard \n> \n> Use BIT() macro and GENMASK() macro\n> \n> Signed-off-by: Patrice Chotard \n> Reviewed-by: Vikas Manocha \n> ---\n> drivers/serial/serial_stm32x7.h | 18 +++++++++---------\n> 1 file changed, 9 insertions(+), 9 deletions(-)\n> \n> diff --git a/drivers/serial/serial_stm32x7.h b/drivers/serial/serial_stm32x7.h\n> index 9fe37af..6d36b74 100644\n> --- a/drivers/serial/serial_stm32x7.h\n> +++ b/drivers/serial/serial_stm32x7.h\n> @@ -28,18 +28,18 @@ struct stm32x7_serial_platdata {\n> \tunsigned long int clock_rate;\n> };\n> \n> -#define USART_CR1_OVER8\t\t\t(1 << 15)\n> -#define USART_CR1_TE\t\t\t(1 << 3)\n> -#define USART_CR1_RE\t\t\t(1 << 2)\n> -#define USART_CR1_UE\t\t\t(1 << 0)\n> +#define USART_CR1_OVER8\t\t\tBIT(15)\n> +#define USART_CR1_TE\t\t\tBIT(3)\n> +#define USART_CR1_RE\t\t\tBIT(2)\n> +#define USART_CR1_UE\t\t\tBIT(0)\n> \n> -#define USART_CR3_OVRDIS\t\t(1 << 12)\n> +#define USART_CR3_OVRDIS\t\tBIT(12)\n> \n> -#define USART_SR_FLAG_RXNE\t\t(1 << 5)\n> -#define USART_SR_FLAG_TXE\t\t(1 << 7)\n> +#define USART_SR_FLAG_RXNE\t\tBIT(5)\n> +#define USART_SR_FLAG_TXE\t\tBIT(7)\n> \n> -#define USART_BRR_F_MASK\t\t0xFF\n> +#define USART_BRR_F_MASK\t\tGENMASK(7, 0)\n> #define USART_BRR_M_SHIFT\t\t4\n> -#define USART_BRR_M_MASK\t\t0xFFF0\n> +#define USART_BRR_M_MASK\t\tGENMASK(15, 4)\n\nIn stm32f7, according to the datasheet, there is no fraction and \nmantissa. Would you please confirm that?\n\nAt the same time, it makes me thinking the BRR is calculated differently \nbetween stm32f7 and stm32f4, would you please check it also in the \ndriver code?\n\n> \n> #endif\n> \n\nBest Regards,\nBo Shen","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=lists.denx.de\n\t(client-ip=81.169.180.215; helo=lists.denx.de;\n\tenvelope-from=u-boot-bounces@lists.denx.de;\n\treceiver=)","ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n\tunprotected) header.d=gmail.com header.i=@gmail.com\n\theader.b=\"hbJquvW9\"; dkim-atps=neutral"],"Received":["from lists.denx.de (dione.denx.de [81.169.180.215])\n\tby ozlabs.org (Postfix) with ESMTP id 3y3Lnq2dsrz9sRq\n\tfor ;\n\tFri, 29 Sep 2017 16:12:45 +1000 (AEST)","by lists.denx.de (Postfix, from userid 105)\n\tid 2C62AC21DCE; Fri, 29 Sep 2017 06:12:38 +0000 (UTC)","from lists.denx.de (localhost [IPv6:::1])\n\tby lists.denx.de (Postfix) with ESMTP id EDECCC21C57;\n\tFri, 29 Sep 2017 06:12:35 +0000 (UTC)","by lists.denx.de (Postfix, from userid 105)\n\tid 8548CC21C57; 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a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:subject:to:references:from:message-id:date\n\t:user-agent:mime-version:in-reply-to:content-language\n\t:content-transfer-encoding;\n\tbh=gEKmnBaeJknzXQ6BZb981NNd3e6clBlxwwx1Uellex8=;\n\tb=mJrJzC8ACSVEDK6nJkFHclpukEztJCDWro4Q9Di29IGeZrgW5AbaIFnNfHOYrwTaOz\n\tQPN8eoMzp0vAlXWcNDfrbASw8vbhLCIwGAMr27mWKD/LweQNHAJLsUmSNoZvosR0iIPG\n\t4LlUiyiy000F71hFxY7jgJLTsWdgpxlp7qjX/N6cfR1OVWy4VpMhzVGEUhOgjmG6UgVW\n\tX/IDsLzvCZDBw05UNj1WWTL8iMEammRYdzENNsuZbBDZYjvp/vy/bRuoH1NMRcnue9xb\n\tHhmKw+xgvXDxBBO/9Fq653MsEBWmqzYhdMxEIXqH6shQTleo1VFsAlSjfPlemI1RUGg6\n\tIDLg==","X-Gm-Message-State":"AMCzsaX6G9lMY/LDa9aVJ5eqj/on/YfQmZ3hY38cXJZstSopUe0Wv1J+\n\tvl8VHvu8fETCJtYIo1prdKA=","X-Google-Smtp-Source":"AOwi7QBX7E/p9VPuNz7arCRxEt5SwDHzixKXtaS1yj6nrLAQdV00w5T/bQ4PdaD1d2KryNckxCXvGA==","X-Received":"by 10.157.21.47 with SMTP id u44mr2097953otf.461.1506665552499; \n\tThu, 28 Sep 2017 23:12:32 -0700 (PDT)","To":"patrice.chotard@st.com, u-boot@lists.denx.de, albert.u.boot@aribaud.net, \n\tsjg@chromium.org, vikas.manocha@st.com","References":"<1506519893-16509-1-git-send-email-patrice.chotard@st.com>\n\t<1506519893-16509-2-git-send-email-patrice.chotard@st.com>","From":"Bo Shen ","Message-ID":"<7fa5af55-f94e-518f-e12c-c79823a3120b@gmail.com>","Date":"Thu, 28 Sep 2017 23:12:31 -0700","User-Agent":"Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101\n\tThunderbird/52.3.0","MIME-Version":"1.0","In-Reply-To":"<1506519893-16509-2-git-send-email-patrice.chotard@st.com>","Content-Language":"en-US","Subject":"Re: [U-Boot] [PATCH v1 1/6] serial: stm32x7: cleanup code","X-BeenThere":"u-boot@lists.denx.de","X-Mailman-Version":"2.1.18","Precedence":"list","List-Id":"U-Boot discussion ","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Content-Transfer-Encoding":"base64","Content-Type":"text/plain; charset=\"utf-8\"; Format=\"flowed\"","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" "}},{"id":1777502,"web_url":"http://patchwork.ozlabs.org/comment/1777502/","msgid":"","list_archive_url":null,"date":"2017-09-29T11:40:22","subject":"Re: [U-Boot] [PATCH v1 1/6] serial: stm32x7: cleanup code","submitter":{"id":63958,"url":"http://patchwork.ozlabs.org/api/people/63958/","name":"Patrice CHOTARD","email":"patrice.chotard@st.com"},"content":"Hi Bo\r\n\r\nOn 09/29/2017 08:12 AM, Bo Shen wrote:\r\n> Hi Patrice,\r\n> \r\n> On 09/27/2017 06:44 AM, patrice.chotard@st.com wrote:\r\n>> From: Patrice Chotard \r\n>>\r\n>> Use BIT() macro and GENMASK() macro\r\n>>\r\n>> Signed-off-by: Patrice Chotard \r\n>> Reviewed-by: Vikas Manocha \r\n>> ---\r\n>>   drivers/serial/serial_stm32x7.h | 18 +++++++++---------\r\n>>   1 file changed, 9 insertions(+), 9 deletions(-)\r\n>>\r\n>> diff --git a/drivers/serial/serial_stm32x7.h \r\n>> b/drivers/serial/serial_stm32x7.h\r\n>> index 9fe37af..6d36b74 100644\r\n>> --- a/drivers/serial/serial_stm32x7.h\r\n>> +++ b/drivers/serial/serial_stm32x7.h\r\n>> @@ -28,18 +28,18 @@ struct stm32x7_serial_platdata {\r\n>>       unsigned long int clock_rate;\r\n>>   };\r\n>> -#define USART_CR1_OVER8            (1 << 15)\r\n>> -#define USART_CR1_TE            (1 << 3)\r\n>> -#define USART_CR1_RE            (1 << 2)\r\n>> -#define USART_CR1_UE            (1 << 0)\r\n>> +#define USART_CR1_OVER8            BIT(15)\r\n>> +#define USART_CR1_TE            BIT(3)\r\n>> +#define USART_CR1_RE            BIT(2)\r\n>> +#define USART_CR1_UE            BIT(0)\r\n>> -#define USART_CR3_OVRDIS        (1 << 12)\r\n>> +#define USART_CR3_OVRDIS        BIT(12)\r\n>> -#define USART_SR_FLAG_RXNE        (1 << 5)\r\n>> -#define USART_SR_FLAG_TXE        (1 << 7)\r\n>> +#define USART_SR_FLAG_RXNE        BIT(5)\r\n>> +#define USART_SR_FLAG_TXE        BIT(7)\r\n>> -#define USART_BRR_F_MASK        0xFF\r\n>> +#define USART_BRR_F_MASK        GENMASK(7, 0)\r\n>>   #define USART_BRR_M_SHIFT        4\r\n>> -#define USART_BRR_M_MASK        0xFFF0\r\n>> +#define USART_BRR_M_MASK        GENMASK(15, 4)\r\n> \r\n> In stm32f7, according to the datasheet, there is no fraction and \r\n> mantissa. Would you please confirm that?\r\n\r\nAgree,\r\n\"mantissa\" is a different wording for BRR[15:4] bits\r\nand \"fraction\" is used for BRR[0:3] bits\r\n\r\n\r\n> \r\n> At the same time, it makes me thinking the BRR is calculated differently \r\n> between stm32f7 and stm32f4, would you please check it also in the \r\n> driver code?\r\n\r\nPreviously BRR was calculated with a more complex formula, i simply \r\nreused the same BRR formula from the kernel serial driver common to \r\nF4/F7/H7 (see drivers/tty/serial/stm32-usart.c)\r\n\r\n\r\n> \r\n>>   #endif\r\n>>\r\n> \r\n> Best Regards,\r\n> Bo Shen\r\n\r\nRegards\r\n\r\nPatrice","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":"ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=lists.denx.de\n\t(client-ip=81.169.180.215; helo=lists.denx.de;\n\tenvelope-from=u-boot-bounces@lists.denx.de;\n\treceiver=)","Received":["from lists.denx.de (dione.denx.de [81.169.180.215])\n\tby ozlabs.org (Postfix) with ESMTP id 3y3V434zFdz9t4k\n\tfor ;\n\tFri, 29 Sep 2017 21:40:35 +1000 (AEST)","by lists.denx.de (Postfix, from userid 105)\n\tid 5628DC21DEF; 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Fri, 29 Sep 2017 13:40:22 +0200"],"X-Spam-Checker-Version":"SpamAssassin 3.4.0 (2014-02-07) on lists.denx.de","X-Spam-Level":"","X-Spam-Status":"No, score=0.0 required=5.0 tests=none autolearn=unavailable\n\tautolearn_force=no version=3.4.0","From":"Patrice CHOTARD ","To":"Bo Shen , \"u-boot@lists.denx.de\"\n\t, \"albert.u.boot@aribaud.net\"\n\t, \"sjg@chromium.org\" ,\n\t\"Vikas MANOCHA\" ","Thread-Topic":"[U-Boot] [PATCH v1 1/6] serial: stm32x7: cleanup code","Thread-Index":"AQHTN5bQ1MvqOwozL0af1GzeChgUGqLLQymAgABbmQA=","Date":"Fri, 29 Sep 2017 11:40:22 +0000","Message-ID":"","References":"<1506519893-16509-1-git-send-email-patrice.chotard@st.com>\n\t<1506519893-16509-2-git-send-email-patrice.chotard@st.com>\n\t<7fa5af55-f94e-518f-e12c-c79823a3120b@gmail.com>","In-Reply-To":"<7fa5af55-f94e-518f-e12c-c79823a3120b@gmail.com>","Accept-Language":"fr-FR, en-US","Content-Language":"en-US","X-MS-Has-Attach":"","X-MS-TNEF-Correlator":"","user-agent":"Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101\n\tThunderbird/52.3.0","x-ms-exchange-messagesentrepresentingtype":"1","x-ms-exchange-transport-fromentityheader":"Hosted","x-originating-ip":"[10.75.127.51]","Content-ID":"<53733021BF2B7D468BBFEC0C8DD156BE@st.com>","MIME-Version":"1.0","X-Proofpoint-Virus-Version":"vendor=fsecure engine=2.50.10432:, ,\n\tdefinitions=2017-09-29_03:, , signatures=0","Subject":"Re: [U-Boot] [PATCH v1 1/6] serial: stm32x7: cleanup code","X-BeenThere":"u-boot@lists.denx.de","X-Mailman-Version":"2.1.18","Precedence":"list","List-Id":"U-Boot discussion ","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"base64","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" "}},{"id":1783045,"web_url":"http://patchwork.ozlabs.org/comment/1783045/","msgid":"<20171009170057.GH12015@bill-the-cat>","list_archive_url":null,"date":"2017-10-09T17:00:57","subject":"Re: [U-Boot] [U-Boot,v1,1/6] serial: stm32x7: cleanup code","submitter":{"id":65875,"url":"http://patchwork.ozlabs.org/api/people/65875/","name":"Tom Rini","email":"trini@konsulko.com"},"content":"On Wed, Sep 27, 2017 at 03:44:48PM +0200, patrice.chotard@st.com wrote:\n\n> From: Patrice Chotard \n> \n> Use BIT() macro and GENMASK() macro\n> \n> Signed-off-by: Patrice Chotard \n> Reviewed-by: Vikas Manocha \n\nApplied to u-boot/master, thanks!","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=lists.denx.de\n\t(client-ip=81.169.180.215; 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