linux-kernel - [PATCH v7] serial/arc-uart: Add new driver

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Message-ID: <1351322232-32137-1-git-send-email-vgupta@synopsys.com>
Date:	Sat, 27 Oct 2012 12:47:11 +0530
From:	<Vineet.Gupta1@...opsys.com>
To:	<gregkh@...uxfoundation.org>, <alan@...ux.intel.com>,
	<balbi@...com>
CC:	<arc-linux-dev@...opsys.com>, <linux-serial@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	Vineet Gupta <Vineet.Gupta1@...opsys.com>
Subject: [PATCH v7] serial/arc-uart: Add new driver

From: Vineet Gupta <vgupta@...opsys.com>

Hi,

Here's the updated revision with all of Felipe' review comments.
-Rebased off tty-next tip.
-Build tested for x86, both as builtin and as module
-Same driver (as module) verified on ARCAngel4 Board.

Please consider applying.

Thanks,
Vineet

v7:
* Reinstated (request|release)_port() as they are called w/o NULL check by core
* verify_port() now does some basic checking
* Use container_of() for converting embedded uart_port to arc_uart_port
* dev_* instead of pr_*

v6:
* syntactical changes per comments by Felipe
* Empty (request|release)_port removed

v5:
* Driver now builds as module; default !y
* Fixed some build wreckage due to SERIAL_ARC && !SERIAL_ARC_CONSOLE
* Fixed a sparse warning due to forced cast, hence reg offsets now in bytes

v4:
* UAPI disintegration fallout for serial_core.h
* rebased off of tty-next

v3:
* Removed empty arc_serial_set_ldisc()
* More set_termios fixes - CSIZE forced to CS8 (for 8N1)
* global @running_on_iss replaced with platform data, saved in device
  specific port structure.

v2:
* ttyARC used as device name
* Dynamic assignment of major/minor numbers.
* Ref counting tty in rx routine to prevent it from disappearing in
  case of a hangup
* set_termios fixes:
  - hardware flow control/parity are marked as unsupported
  - baud written back to termios
* cosmetics such as commenting the need for @running_on_iss, empty lines
  etc

Vineet Gupta (1):
  serial/arc-uart: Add new driver

 drivers/tty/serial/Kconfig       |   23 ++
 drivers/tty/serial/Makefile      |    1 +
 drivers/tty/serial/arc_uart.c    |  754 ++++++++++++++++++++++++++++++++++++++
 include/uapi/linux/serial_core.h |    2 +
 4 files changed, 780 insertions(+), 0 deletions(-)
 create mode 100644 drivers/tty/serial/arc_uart.c

-- 
1.7.4.1

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