linux-kernel - [PATCH 00/06] serial8250: DLL/DLM rework, Emma Mobile UART driver

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Message-Id: <20120502124642.30480.41373.sendpatchset@w520>
Date:	Wed, 02 May 2012 21:46:42 +0900
From:	Magnus Damm <magnus.damm@...il.com>
To:	linux-serial@...r.kernel.org
Cc:	horms@...ge.net.au, arnd@...db.de, linux-sh@...r.kernel.org,
	gregkh@...uxfoundation.org, swarren@...dotorg.org,
	linux-kernel@...r.kernel.org, rjw@...k.pl,
	paul.gortmaker@...driver.com, lethal@...ux-sh.org, olof@...om.net,
	Magnus Damm <magnus.damm@...il.com>, dan.j.williams@...el.com,
	alan@...ux.intel.com
Subject: [PATCH 00/06] serial8250: DLL/DLM rework, Emma Mobile UART driver

serial8250: DLL/DLM rework, Emma Mobile UART driver

[PATCH 01/06] serial8250: Add dl_read()/dl_write() callbacks
[PATCH 02/06] serial8250: Use dl_read()/dl_write() on Alchemy
[PATCH 03/06] serial8250: Use dl_read()/dl_write() on RM9K
[PATCH 04/06] serial8250: Clean up default map and dl code
[PATCH 05/06] serial8250: Introduce serial8250_register_8250_port()
[PATCH 06/06] serial8250-em: Add Emma Mobile UART driver

This series cleans up and adjusts the 8250 code base to allow
hooking in a driver for the UART in Emma Mobile SoCs.

In short:
- Patch 1-4 tie in 8250-specific dl_read()/dl_write() callbacks.
- Patch 5 adds a new register function to use new callbacks.
- Patch 6 adds a new driver that makes use of the above.

I'd be happy to rework the above patches if needed. The
main challenge for Emma Mobile UART support is the non-
standard offsets for DLL and DLM registers.

Note that there is no DT support included at this point,
but it boils down to a 10 line change. The boot loader on
my board does not do DT so I'd like to use kexec for DT
development (as usual), but to use kexec I first need to
get a non-DT kernel working. Which is basically this. =)

Signed-off-by: Magnus Damm <damm@...nsource.se>
---

 Builds on top of linux-next 20120501.

 drivers/tty/serial/8250/8250.c    |  373 ++++++++++++++++++-------------------
 drivers/tty/serial/8250/8250.h    |   14 +
 drivers/tty/serial/8250/8250_em.c |  179 +++++++++++++++++
 drivers/tty/serial/8250/Kconfig   |    8 
 drivers/tty/serial/8250/Makefile  |    1 
 include/linux/serial_8250.h       |    1 
 6 files changed, 392 insertions(+), 184 deletions(-)

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