linux-stable.git/drivers/tty/serial/Makefile, branch linux-5.4.y

Merge tag 'tty-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2019-09-18T17:50:47+00:00

Pull tty/serial driver updates from Greg KH:
 "Even in this age, people are still making new serial port silicon,
  why...

  Anyway, here's the TTY and Serial driver update for 5.4-rc1. Lots of
  changes in here for a number of embedded serial port devices that are
  being worked on because people really like to see those console
  logs...

  Other than that, nothing major here, no core tty changes that anyone
  should care about.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'tty-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (125 commits)
  serial: tegra: Add PIO mode support
  serial: tegra: report clk rate errors
  serial: tegra: add support to adjust baud rate
  serial: tegra: DT for Adjusted baud rates
  serial: tegra: add support to use 8 bytes trigger
  serial: tegra: set maximum num of uart ports to 8
  serial: tegra: check for FIFO mode enabled status
  dt-binding: serial: tegra: add new chips
  serial: tegra: report error to upper tty layer
  serial: tegra: flush the RX fifo on frame error
  serial: tegra: avoid reg access when clk disabled
  serial: tegra: add support to ignore read
  serial: sprd: correct the wrong sequence of arguments
  dt-bindings: serial: Convert riscv,sifive-serial to json-schema
  serial: max310x: turn off transmitter before activating AutoCTS or auto transmitter flow control
  serial: max310x: Properly set flags in AutoCTS mode
  tty: serial: fix platform_no_drv_owner.cocci warnings
  dt-bindings: serial: Document Freescale LINFlexD UART
  serial: fsl_linflexuart: Update compatible string
  tty: n_gsm: avoid recursive locking with async port hangup
  ...

tty: serial: Add linflexuart driver for S32V234

2019-09-04T10:43:54+00:00

Introduce support for LINFlex driver, based on:
- the version of Freescale LPUART driver after commit b3e3bf2ef2c7 ("Merge
  4.0-rc7 into tty-next");
- commit abf1e0a98083 ("tty: serial: fsl_lpuart: lock port on console
  write").
In this basic version, the driver can be tested using initramfs and relies
on the clocks and pin muxing set up by U-Boot.

Remarks concerning the earlycon support:

- LinFlexD does not allow character transmissions in the INIT mode (see
  section 47.4.2.1 in the reference manual[1]). Therefore, a mutual
  exclusion between the first linflex_setup_watermark/linflex_set_termios
  executions and linflex_earlycon_putchar was employed and the characters
  normally sent to earlycon during initialization are kept in a buffer and
  sent afterwards.

- Empirically, character transmission is also forbidden within the last 1-2
  ms before entering the INIT mode, so we use an explicit timeout
  (PREINIT_DELAY) between linflex_earlycon_putchar and the first call to
  linflex_setup_watermark.

- U-Boot currently uses the UART FIFO mode, while this driver makes the
  transition to the buffer mode. Therefore, the earlycon putchar function
  matches the U-Boot behavior before initializations and the Linux behavior
  after.

[1] https://www.nxp.com/webapp/Download?colCode=S32V234RM

Signed-off-by: Stoica Cosmin-Stefan 
Signed-off-by: Adrian.Nitu 
Signed-off-by: Larisa Grigore 
Signed-off-by: Ana Nedelcu 
Signed-off-by: Mihaela Martinas 
Signed-off-by: Matthew Nunez 
[stefan-gabriel.mirea@nxp.com: Reduced for upstreaming and implemented
                               earlycon support]
Signed-off-by: Stefan-Gabriel Mirea 
Link: https://lore.kernel.org/r/20190809112853.15846-6-stefan-gabriel.mirea@nxp.com
Signed-off-by: Greg Kroah-Hartman

serial: remove ks8695 driver

2019-09-04T10:43:53+00:00

The platform is getting removed, so there are no more users
of this driver.

Signed-off-by: Arnd Bergmann 
Link: https://lore.kernel.org/r/20190809202749.742267-3-arnd@arndb.de
Signed-off-by: Greg Kroah-Hartman

tty/serial: remove the ioc3_serial driver

2019-08-16T18:33:56+00:00

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.

Signed-off-by: Christoph Hellwig 
Link: https://lkml.kernel.org/r/20190813072514.23299-9-hch@lst.de
Signed-off-by: Tony Luck

tty/serial: remove the ioc4_serial driver

2019-08-16T18:33:56+00:00

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.

Signed-off-by: Christoph Hellwig 
Link: https://lkml.kernel.org/r/20190813072514.23299-8-hch@lst.de
Signed-off-by: Tony Luck

tty/serial: remove the sn_console driver

2019-08-16T18:33:56+00:00

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.

Signed-off-by: Christoph Hellwig 
Link: https://lkml.kernel.org/r/20190813072514.23299-7-hch@lst.de
Signed-off-by: Tony Luck

tty: serial: netx: Delete driver

2019-07-25T10:05:28+00:00

The Netx ARM machine was deleted from the kernel. This driver
had no users and has to go.

Cc: Robert Schwebel 
Cc: Sascha Hauer 
Signed-off-by: Linus Walleij 
Signed-off-by: Arnd Bergmann 
Link: https://lore.kernel.org/r/20190722065146.4844-1-linus.walleij@linaro.org
Signed-off-by: Greg Kroah-Hartman

serial: mpsc: Remove obsolete MPSC driver

2019-07-03T17:28:40+00:00

Support for the Marvell MV64x60 line of bridge chips that contained
MPSC controllers has been removed and there are no other components
that have that controller so remove its driver.

Signed-off-by: Mark Greer 
Link: https://lore.kernel.org/r/20190626160553.28518-1-mgreer@animalcreek.com
Signed-off-by: Greg Kroah-Hartman

tty: serial: add driver for the SiFive UART

2019-04-29T14:30:59+00:00

Add a serial driver for the SiFive UART, found on SiFive FU540 devices
(among others).

The underlying serial IP block is relatively basic, and currently does
not support serial break detection.  Further information on the IP
block can be found in the documentation and Chisel sources:

    https://static.dev.sifive.com/FU540-C000-v1.0.pdf

    https://github.com/sifive/sifive-blocks/tree/master/src/main/scala/devices/uart

This driver was written in collaboration with Wesley Terpstra
.

Tested on a SiFive HiFive Unleashed A00 board, using BBL and the open-
source FSBL (using a DT file based on what's targeted for mainline).

This revision incorporates changes based on comments by Julia Lawall
, Emil Renner Berthing , and
Andreas Schwab .  Thanks also to Andreas for testing
the driver with his userspace and reporting a bug with the
set_termios implementation.

Signed-off-by: Paul Walmsley 
Signed-off-by: Paul Walmsley 
Cc: Greg Kroah-Hartman 
Cc: Jiri Slaby 
Cc: Palmer Dabbelt 
Cc: Wesley Terpstra 
Cc: linux-serial@vger.kernel.org
Cc: linux-riscv@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: Julia Lawall 
Cc: Emil Renner Berthing 
Cc: Andreas Schwab 
Signed-off-by: Greg Kroah-Hartman

serial: Add Milbeaut serial control

2019-04-16T13:21:34+00:00

Add Milbeaut serial control including earlycon and console.

Signed-off-by: Sugaya Taichi 
Signed-off-by: Greg Kroah-Hartman