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Date: Tue, 16 Feb 2016 14:55:06 +0800
From: Peter Hung <hpeter@...il.com>
To: linus.walleij@...aro.org, gnurou@...il.com,
gregkh@...uxfoundation.org, andriy.shevchenko@...ux.intel.com,
paul.gortmaker@...driver.com, lee.jones@...aro.org,
jslaby@...e.com, gnomes@...rguk.ukuu.org.uk,
peter_hong@...tek.com.tw
Cc: heikki.krogerus@...ux.intel.com, peter@...leysoftware.com,
soeren.grunewald@...y.de, udknight@...il.com,
adam.lee@...onical.com, arnd@...db.de, manabian@...il.com,
scottwood@...escale.com, yamada.masahiro@...ionext.com,
paul.burton@...tec.com, mans@...sr.com, matthias.bgg@...il.com,
ralf@...ux-mips.org, linux-kernel@...r.kernel.org,
linux-gpio@...r.kernel.org, linux-serial@...r.kernel.org,
tom_tsai@...tek.com.tw, Peter Hung <hpeter+linux_kernel@...il.com>
Subject: [PATCH V3 0/4] Transform Fintek PCIE driver from 8250 to MFD
The Fintek F81504/508/512 is a multi-function PCIE devices.
IC function list:
F81504: Max 2x8 GPIOs and max 4 serial ports
port2/3 are multi-function
F81508: Max 6x8 GPIOs and max 8 serial ports
port2/3 are multi-function, port8/9/10/11 are gpio only
F81512: Max 6x8 GPIOs and max 12 serial ports
port2/3/8/9/10/11 are multi-function
It had implemented in 8250_pci.c with basic serial port function.
We want to complete it. Alan & Andy recommend us to rewrite and
spilt our driver with MFD architecture.
https://lkml.org/lkml/2016/1/19/288
Paul recommed us do less code deletion to avoid confusing problem when
bisect.
https://lkml.org/lkml/2016/1/18/646
So we'll do this with following patches.
1. Add MFD core driver.
2. Add GPIOLIB driver.
3. Add serial port driver.
4. Remove old driver in 8250_pci.c and add it to blacklist
It can be workable when applied patches 1~3. After apply patch 4,
the device will control by F81504 MFD core driver.
Changelog:
V3:
1. Refactoring gpio-f81504.c with new API
(Suggested by Linus Walleij).
2. Fix wrong kfree in gpio-f81504.c (Suggested by Andy Shevchenko).
3. Get PCI resource by pci_resource_start() instead of getting PCI
resource from BAR of PCI configuration space (Suggested by Alan).
V2:
1. Split F81504/508/512 from 8250_pci.c to MFD, It'll add 3 new files
1. drivers/mfd/f81504-core.c
2. drivers/gpio/gpio-f81504.c
3. drivers/tty/serial/8250/8250_f81504.c
V1:
1. Split F81504/508/512 from 8250_pci.c to 8250_fintek_pci.c.
Alan & Andy recommend me to rewrite as MFD architecture.
Peter Hung (4):
mfd: f81504-core: Add Fintek F81504/508/512 PCIE-to-UART/GPIO core
support
gpio: gpio-f81504: Add Fintek F81504/508/512 PCIE-to-UART/GPIO GPIOLIB
support
8250: 8250_f81504: Add Fintek F81504/508/512 PCIE-to-UART/GPIO UART
support
serial: 8250_pci: Remove Fintek F81504/508/512 UART driver
drivers/gpio/Kconfig | 10 +
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-f81504.c | 241 ++++++++++++++++++++++++
drivers/mfd/Kconfig | 12 ++
drivers/mfd/Makefile | 2 +
drivers/mfd/f81504-core.c | 336 ++++++++++++++++++++++++++++++++++
drivers/tty/serial/8250/8250_f81504.c | 254 +++++++++++++++++++++++++
drivers/tty/serial/8250/8250_pci.c | 206 +--------------------
drivers/tty/serial/8250/Kconfig | 11 ++
drivers/tty/serial/8250/Makefile | 1 +
include/linux/mfd/f81504.h | 52 ++++++
11 files changed, 925 insertions(+), 201 deletions(-)
create mode 100644 drivers/gpio/gpio-f81504.c
create mode 100644 drivers/mfd/f81504-core.c
create mode 100644 drivers/tty/serial/8250/8250_f81504.c
create mode 100644 include/linux/mfd/f81504.h
--
1.9.1
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