linux-kernel - [PATCH v3 0/6] serial: Separate RT288x/Au1xxx code into own file

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Message-Id: <20230509113924.19540-1-ilpo.jarvinen@linux.intel.com>
Date:   Tue,  9 May 2023 14:39:18 +0300
From:   Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To:     linux-serial@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Philippe Mathieu-Daudé <philmd@...aro.org>
Cc:     linux-kernel@...r.kernel.org,
        Niklas Schnelle <schnelle@...ux.ibm.com>,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: [PATCH v3 0/6] serial: Separate RT288x/Au1xxx code into own file

A non-trivial amount of RT288x/Au1xxx code is encapsulated into
ifdeffery in 8250_port / 8250_early and some if/switch UPIO_AU blocks.
Create a separate file from them and do a few additional cleanups.

I kept the Kconfig entry as bool because the code has somewhat tricky
dependency chain (mips arch code and 8250_of driver).

v3:
- Convert dl_read/write() to take u32 arg + name the args
- Separatate the non-driver datastructure changes & document them better
- Fix build when SERIAL_8250=m + SERIAL_8250_RT288X=y (+note reasoning
  in the commit message for future reference)
- Use u8 for arrays that no longer have < 0 values

v2:
- Define register map array lengths explicitly to avoid creating
  declaration trap.

Ilpo Järvinen (6):
  serial: 8250: Change dl_read/write to handle value as u32
  serial: 8250: Document uart_8250_port's ->dl_read/write()
  serial: 8250: Add dl_read/write, bugs and mapsize into plat_serial8250_port
  serial: 8250: RT288x/Au1xxx code away from core
  serial: 8250_rt288x: Name non-standard divisor latch reg
  serial: 8250_rt288x: Remove unnecessary UART_REG_UNMAPPED

 arch/mips/alchemy/common/platform.c     |  10 +-
 drivers/tty/serial/8250/8250.h          |   4 +-
 drivers/tty/serial/8250/8250_core.c     |   4 +
 drivers/tty/serial/8250/8250_early.c    |  21 ----
 drivers/tty/serial/8250/8250_em.c       |   4 +-
 drivers/tty/serial/8250/8250_of.c       |   4 +-
 drivers/tty/serial/8250/8250_port.c     |  84 +--------------
 drivers/tty/serial/8250/8250_pxa.c      |   2 +-
 drivers/tty/serial/8250/8250_rt288x.c   | 136 ++++++++++++++++++++++++
 drivers/tty/serial/8250/8250_uniphier.c |   4 +-
 drivers/tty/serial/8250/Makefile        |   1 +
 drivers/tty/serial/Makefile             |   2 +-
 include/linux/serial_8250.h             |  42 +++++++-
 13 files changed, 200 insertions(+), 118 deletions(-)
 create mode 100644 drivers/tty/serial/8250/8250_rt288x.c

-- 
2.30.2