Exar XR17V352/354/358 chips have 16 multi-purpose inputs/outputs which can be controlled using gpio interface.
v5 was sent in January, 2016 and after reviews it was suggested to split the exar code out of 8250_pci and make its own driver. For reference it is at https://patchwork.kernel.org/patch/8058311/ First split attempt was patch series v6. regards sudip Sudip Mukherjee (3): gpio: exar: add gpio for exar cards serial: exar: split out the exar code from 8250_pci serial: 8250_pci: remove exar code drivers/gpio/Kconfig | 7 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-exar.c | 238 +++++++++++++++++ drivers/tty/serial/8250/8250_exar.c | 515 ++++++++++++++++++++++++++++++++++++ drivers/tty/serial/8250/8250_pci.c | 336 +---------------------- drivers/tty/serial/8250/Kconfig | 5 + drivers/tty/serial/8250/Makefile | 1 + 7 files changed, 770 insertions(+), 333 deletions(-) create mode 100644 drivers/gpio/gpio-exar.c create mode 100644 drivers/tty/serial/8250/8250_exar.c -- 1.9.1
