From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-pa0-x22f.google.com ([2607:f8b0:400e:c03::22f]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Yq53x-0007py-CD for barebox@lists.infradead.org; Wed, 06 May 2015 19:32:59 +0000 Received: by pacyx8 with SMTP id yx8so17968937pac.1 for ; Wed, 06 May 2015 12:32:36 -0700 (PDT) From: Andrey Smirnov Date: Wed, 6 May 2015 12:31:58 -0700 Message-Id: <1430940733-4415-4-git-send-email-andrew.smirnov@gmail.com> In-Reply-To: <1430940733-4415-1-git-send-email-andrew.smirnov@gmail.com> References: <1430940733-4415-1-git-send-email-andrew.smirnov@gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH v3 03/18] i.MX: serial: Add baud rate calculation convenience functions To: barebox@lists.infradead.org Cc: Andrey Smirnov Add two functions to calculate values for UBMR and UBIR registers. This way both early serial initalization code and serial_imx.c can use them and not duplicate the code. Singed-off-by: Andrey Smirnov --- drivers/serial/serial_imx.c | 4 ++-- include/serial/imx-uart.h | 9 +++++++++ 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/serial/serial_imx.c b/drivers/serial/serial_imx.c index 6ae87fd..12155ad 100644 --- a/drivers/serial/serial_imx.c +++ b/drivers/serial/serial_imx.c @@ -178,9 +178,9 @@ static int imx_serial_setbaudrate(struct console_device *cdev, int baudrate) writel(val, regs + UCR1); /* Set the numerator value minus one of the BRM ratio */ - writel((baudrate / 100) - 1, regs + UBIR); + writel(baudrate_to_ubir(baudrate), regs + UBIR); /* Set the denominator value minus one of the BRM ratio */ - writel((imx_serial_reffreq(priv) / 1600) - 1, regs + UBMR); + writel(refclock_to_ubmr(imx_serial_reffreq(priv)), regs + UBMR); writel(ucr1, regs + UCR1); diff --git a/include/serial/imx-uart.h b/include/serial/imx-uart.h index 0a01788..7275e6a 100644 --- a/include/serial/imx-uart.h +++ b/include/serial/imx-uart.h @@ -115,5 +115,14 @@ #define UTS_RXFULL (1<<3) /* RxFIFO full */ #define UTS_SOFTRST (1<<0) /* Software reset */ +static inline int baudrate_to_ubir(int baudrate) +{ + return baudrate / 100 - 1; +} + +static inline int refclock_to_ubmr(int clock_hz) +{ + return clock_hz / 1600 - 1; +} #endif /* __IMX_UART_H__ */ -- 2.1.4 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox