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    Subject[PATCH V2 0/4] Transform Fintek PCIE driver from 8250 to MFD
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    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

    It can be workable when applied patches 1~3. After apply patch 4,
    the device will control by F81504 MFD core driver.
    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 | 257 ++++++++++++++++++++++++++
    drivers/mfd/Kconfig | 11 ++
    drivers/mfd/Makefile | 2 +
    drivers/mfd/f81504-core.c | 331 ++++++++++++++++++++++++++++++++++
    drivers/tty/serial/8250/8250_f81504.c | 254 ++++++++++++++++++++++++++
    drivers/tty/serial/8250/8250_pci.c | 201 ---------------------
    drivers/tty/serial/8250/Kconfig | 11 ++
    drivers/tty/serial/8250/Makefile | 1 +
    include/linux/mfd/f81504.h | 52 ++++++
    11 files changed, 930 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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