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-kernel@vger.kernel.org, linux-serial@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 0/3] serial: 8250_dw: add fractional divisor support
Date: Wed, 4 Jul 2018 16:59:08 +0800 [thread overview]
Message-ID: <20180704165908.4bb8b090@xhacker.debian> (raw)
For Synopsys DesignWare 8250 uart which version >= 4.00a, there's a
valid divisor latch fraction register. The fractional divisor width is
4bits ~ 6bits.
patch1 lets serial8250_get_divisor() get uart_port * as param
patch2 introduces necessary hooks to 8250 core.
patch3 implements the fractional divisor support for Synopsys DW 8250.
Since v1:
- add an extra patch to let serial8250_get_divisor() get uart_port *
as param
- take Andy's suggestions to "integrates hooks in the same way like
it's done for the rest of 8250 ones". Many thanks to Andy.
Jisheng Zhang (3):
serial: 8250: let serial8250_get_divisor() get uart_port * as param
serial: 8250: introduce get_divisor() and set_divisor() hook
serial: 8250_dw: add fractional divisor support
drivers/tty/serial/8250/8250_core.c | 4 +++
drivers/tty/serial/8250/8250_dw.c | 53 +++++++++++++++++++++++++++++
drivers/tty/serial/8250/8250_port.c | 33 ++++++++++++++----
include/linux/serial_core.h | 7 ++++
4 files changed, 90 insertions(+), 7 deletions(-)
--
2.18.0
next reply other threads:[~2018-07-04 9:01 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-04 8:59 Jisheng Zhang [this message]
2018-07-04 9:00 ` [PATCH v2 1/3] serial: 8250: let serial8250_get_divisor() get uart_port * as param Jisheng Zhang
2018-07-04 10:00 ` Andy Shevchenko
2018-07-04 9:02 ` [PATCH v2 2/3] serial: 8250: introduce get_divisor() and set_divisor() hook Jisheng Zhang
2018-07-04 10:00 ` Andy Shevchenko
2018-07-04 9:03 ` [PATCH v2 3/3] serial: 8250_dw: add fractional divisor support Jisheng Zhang
2018-07-04 16:08 ` Andy Shevchenko
2018-07-05 6:39 ` Jisheng Zhang
2018-07-05 6:54 ` Jisheng Zhang
2018-07-06 17:39 ` Andy Shevchenko
2018-07-06 17:37 ` Andy Shevchenko
2018-07-09 6:04 ` Jisheng Zhang
2018-07-09 6:15 ` Andy Shevchenko
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