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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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