linux-kernel - [PATCH v5 0/2] add ISO7816 support

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Date:   Wed, 26 Sep 2018 14:58:46 +0200
From:   Ludovic Desroches <ludovic.desroches@...rochip.com>
To:     <linux-serial@...r.kernel.org>, <linux-arch@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
CC:     <gregkh@...uxfoundation.org>, <arnd@...db.de>,
        <richard.genoud@...il.com>, <nicolas.ferre@...rochip.com>,
        <alexandre.belloni@...tlin.com>, <linux-kernel@...r.kernel.org>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>
Subject: [PATCH v5 0/2] add ISO7816 support

Hi,

This patchset adds support for the ISO7816 standard. The USART devices
in Microchip SoCs have an ISO7816 mode. It allows to let the USART
managing the CLK and I/O signals of a smart card.

Changes:
- v5
  - rebase on tty-next.
  - add documentation for the new ioctls (mimic rs485 one).
  - fix a switch/case identation
- v4
  - use the IP version number instead of the compatible string to set
  min and max values for fidi.
  - remove a useless macro for fidi.
- v3
  - add IOCTLs to parisc arch.
  - rework atmel_config_iso7816 according to the comments by Richard.
  - keep max iteration hard coded. Will see later if the user need to
    set this value. It may also concern the normal/inverse mode.
  - improve the checking of the value from the user space.
- v2
  - uart_get_iso7816_config: check there is an iso7816_config function.
  - use IOCTL macros to generate the IOCTL number.
  - check that reserved field is not used.
  - remove debug logs.
  - check that the iso7816_config is right before doing any action.
  - change the error from nack and max iteration status to a debug
    message.
  - remove patch 3 as it concerns both rs485 and iso7816 to think more
    about the need of adding a lock or not.

Nicolas Ferre (2):
  tty/serial_core: add ISO7816 infrastructure
  tty/serial: atmel: add ISO7816 support

 Documentation/serial/serial-iso7816.txt |  83 ++++++++++++++
 arch/alpha/include/uapi/asm/ioctls.h    |   2 +
 arch/mips/include/uapi/asm/ioctls.h     |   2 +
 arch/parisc/include/uapi/asm/ioctls.h   |   2 +
 arch/powerpc/include/uapi/asm/ioctls.h  |   2 +
 arch/sh/include/uapi/asm/ioctls.h       |   2 +
 arch/sparc/include/uapi/asm/ioctls.h    |   2 +
 arch/xtensa/include/uapi/asm/ioctls.h   |   2 +
 drivers/tty/serial/atmel_serial.c       | 190 ++++++++++++++++++++++++++++++--
 drivers/tty/serial/atmel_serial.h       |   3 +-
 drivers/tty/serial/serial_core.c        |  60 ++++++++++
 include/linux/serial_core.h             |   3 +
 include/uapi/asm-generic/ioctls.h       |   2 +
 include/uapi/linux/serial.h             |  17 +++
 14 files changed, 360 insertions(+), 12 deletions(-)
 create mode 100644 Documentation/serial/serial-iso7816.txt

-- 
2.12.2