[PATCH v4] serial/arc-uart: Add New Driver

[Vineet.Gupta1]

From: Vineet Gupta <vgupta@xxxxxxxxxxxx>

Hi Greg,

Rebased off of tty-next and verfied that it builds fine.
Please consider applying.

Thanks,
Vineet

v4:
* UAPI disintegration fallout for serial_core.h
* rebased off of tty-next

v3:
* Removed empty arc_serial_set_ldisc()
* More set_termios fixes - CSIZE forced to CS8 (for 8N1)
* global @running_on_iss replaced with platform data, saved in device
  specific port structure.

v2:
* ttyARC used as device name
* Dynamic assignment of major/minor numbers.
* Ref counting tty in rx routine to prevent it from disappearing in
  case of a hangup
* set_termios fixes:
  - hardware flow control/parity are marked as unsupported
  - baud written back to termios
* cosmetics such as commenting the need for @running_on_iss, empty lines
  etc

Vineet Gupta (1):
  serial/arc-uart: Add new driver

 drivers/tty/serial/Kconfig       |   25 ++
 drivers/tty/serial/Makefile      |    1 +
 drivers/tty/serial/arc_uart.c    |  747 ++++++++++++++++++++++++++++++++++++++
 include/uapi/linux/serial_core.h |    2 +
 4 files changed, 775 insertions(+), 0 deletions(-)
 create mode 100644 drivers/tty/serial/arc_uart.c

-- 
1.7.4.1

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