From: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.com>
Cc: linux-arm-kernel@lists.infradead.org,
linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v6 2/3] serial: 8250: export serial8250_do_set_divisor()
Date: Thu, 12 Jul 2018 09:58:14 +0800 [thread overview]
Message-ID: <20180712095814.76b0f159@xhacker.debian> (raw)
In-Reply-To: <20180712095504.4d9583ce@xhacker.debian>
Some drivers could call serial8250_do_set_divisor() to complete its
own set_divisor routine. Export this symbol for code reusing.
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/tty/serial/8250/8250_port.c | 5 +++--
include/linux/serial_8250.h | 3 +++
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index ce0dc17f18ee..945f8dc2d50f 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -2580,8 +2580,8 @@ static unsigned char serial8250_compute_lcr(struct uart_8250_port *up,
return cval;
}
-static void serial8250_do_set_divisor(struct uart_port *port, unsigned int baud,
- unsigned int quot, unsigned int quot_frac)
+void serial8250_do_set_divisor(struct uart_port *port, unsigned int baud,
+ unsigned int quot, unsigned int quot_frac)
{
struct uart_8250_port *up = up_to_u8250p(port);
@@ -2612,6 +2612,7 @@ static void serial8250_do_set_divisor(struct uart_port *port, unsigned int baud,
serial_port_out(port, 0x2, quot_frac);
}
}
+EXPORT_SYMBOL_GPL(serial8250_do_set_divisor);
static void serial8250_set_divisor(struct uart_port *port, unsigned int baud,
unsigned int quot, unsigned int quot_frac)
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index 76b9db71e489..18e21427bce4 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -160,6 +160,9 @@ extern void serial8250_do_shutdown(struct uart_port *port);
extern void serial8250_do_pm(struct uart_port *port, unsigned int state,
unsigned int oldstate);
extern void serial8250_do_set_mctrl(struct uart_port *port, unsigned int mctrl);
+extern void serial8250_do_set_divisor(struct uart_port *port, unsigned int baud,
+ unsigned int quot,
+ unsigned int quot_frac);
extern int fsl8250_handle_irq(struct uart_port *port);
int serial8250_handle_irq(struct uart_port *port, unsigned int iir);
unsigned char serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr);
--
2.18.0
next prev parent reply other threads:[~2018-07-12 2:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-12 1:55 [PATCH v6 0/3] serial: 8250_dw: add fractional divisor support Jisheng Zhang
2018-07-12 1:57 ` [PATCH v6 1/3] serial: 8250: introduce get_divisor() and set_divisor() hook Jisheng Zhang
2018-07-12 1:58 ` Jisheng Zhang [this message]
2018-07-12 1:59 ` [PATCH v6 3/3] serial: 8250_dw: add fractional divisor support Jisheng Zhang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180712095814.76b0f159@xhacker.debian \
--to=jisheng.zhang@synaptics.com \
--cc=andriy.shevchenko@linux.intel.com \
--cc=gregkh@linuxfoundation.org \
--cc=jslaby@suse.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-serial@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).