linux-toradex.git/drivers/tty/serial/serial_mctrl_gpio.c, branch v4.4.73

serial: mctrl_gpio: implement interrupt handling

2015-10-04T17:47:51+00:00

This allows to reduce the per-driver boiler plate considerably.

Signed-off-by: Uwe Kleine-König 
Reviewed-by: Nicolas Ferre 
Signed-off-by: Greg Kroah-Hartman

serial: mctrl-gpio: rename init function

2015-10-04T17:46:43+00:00

This is done before adding more functionality to the init function with
the existing name. As this new functionality conflicts with stuff
drivers are required to implement themselves up to I want to convert
them one by one to make reviewing and reverting more easy in case I
broke something.

Once mctrl_gpio_init is there and all drivers are converted
mctrl_gpio_init_noauto can be removed again.

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Greg Kroah-Hartman

Merge tag 'tty-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2015-06-26T22:53:22+00:00

Pull tty/serial driver updates from Greg KH:
 "Here's the tty and serial driver patches for 4.2-rc1.

  A number of individual driver updates, some code cleanups, and other
  minor things, full details in the shortlog.

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

* tag 'tty-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (152 commits)
  Doc: serial-rs485.txt: update RS485 driver interface
  Doc: tty.txt: remove mention of the BKL
  MAINTAINERS: tty: add serial docs directory
  serial: sprd: check for NULL after calling devm_clk_get
  serial: 8250_pci: Correct uartclk for xr17v35x expansion chips
  serial: 8250_pci: Add support for 12 port Exar boards
  serial: 8250_uniphier: add bindings document for UniPhier UART
  serial: core: cleanup in uart_get_baud_rate()
  serial: stm32-usart: Add STM32 USART Driver
  tty/serial: kill off set_irq_flags usage
  tty: move linux/gsmmux.h to uapi
  doc: dt: add documentation for nxp,lpc1850-uart
  serial: 8250: add LPC18xx/43xx UART driver
  serial: 8250_uniphier: add UniPhier serial driver
  serial: 8250_dw: support ACPI platforms with integrated DMA engine
  serial: of_serial: check the return value of clk_prepare_enable()
  serial: of_serial: use devm_clk_get() instead of clk_get()
  serial: earlycon: Add support for big-endian MMIO accesses
  serial: sirf: use hrtimer for data rx
  serial: sirf: correct the fifo empty_bit
  ...

gpiolib: rename gpiod_set_array to gpiod_set_array_value

2015-06-01T13:10:09+00:00

There have been concerns that the function names gpiod_set_array() and
gpiod_get_array() might be confusing to users. One might expect
gpiod_get_array() to return array values, while it is actually the array
counterpart of gpiod_get(). To be consistent with the single descriptor API
we could rename gpiod_set_array() to gpiod_set_array_value(). This makes
some function names a bit lengthy: gpiod_set_raw_array_value_cansleep().

Signed-off-by: Rojhalat Ibrahim 
Acked-by: Alexandre Courbot 
Signed-off-by: Linus Walleij

serial: mctrl-gpio: drop usages of IS_ERR_OR_NULL

2015-05-24T20:06:08+00:00

The function mctrl_gpio_init returns failure if the assignment to any
member of the gpio array results in an error pointer.  So there is no
need to check for such error values in the other functions.

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Greg Kroah-Hartman

serial: mctrl_gpio: Fix build warnings

2015-03-11T12:55:20+00:00

Fix the following build warnings:

drivers/tty/serial/serial_mctrl_gpio.c: In function 'mctrl_gpio_init':
drivers/tty/serial/serial_mctrl_gpio.c:110:4: warning: return makes pointer from integer without a cast
    return PTR_ERR(gpios->gpio[i]);
    ^
/home/build/work/batch/drivers/tty/serial/serial_mctrl_gpio.c:90:6: warning: unused variable 'err' [-Wunused-variable]
  int err;
      ^

Return ERR_CAST and remove the unused 'err' variable to fix them.

Fixes: 1d267ea6539f ("serial: mctrl-gpio: simplify init routine")
Reported-by: Olof's autobuilder 
Signed-off-by: Fabio Estevam 
Acked-by: Uwe Kleine-König 
Signed-off-by: Greg Kroah-Hartman

serial: mctrl-gpio: simplify init routine

2015-03-07T02:15:04+00:00

Instead of ignoring errors returned by devm_gpiod_get_index use
devm_gpiod_get_index_optional which results in slightly more strict
error handling which is good.

Also use the fourth parameter to devm_gpiod_get_index_optional to be
able to drop the explicit direction setting.

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Greg Kroah-Hartman

serial: mctrl-gpio: don't check for struct mctrl_gpios * to be invalid

2015-03-07T02:15:04+00:00

Drivers using mctrl-gpio must not pass invalid values for struct
mctrl_gpios *. All drivers were fixed in this regard and so some checks
can go away or be simplified.

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Greg Kroah-Hartman

serial: mctrl_gpio: use gpiod_set_array function

2014-12-02T13:25:42+00:00

Make the serial_mctrl_gpio driver the first user of the new gpiod_set_array
function, which is now available in the linux-gpio devel tree.
All modem control output signals are now set simultaneously.

Signed-off-by: Rojhalat Ibrahim 
Reviewed-by: Alexandre Courbot 
Acked-by: Greg Kroah-Hartman 
Signed-off-by: Linus Walleij

tty: serial_mctrl_gpio: Fix COMPILE_TEST build for architectures with custom termios.h

2014-09-20T13:56:55+00:00

This patch fixes COMPILE_TEST build of serial_mctrl_gpio module for
architectures with custom termios.h header.

sparc64:allmodconfig:

In file included from drivers/tty/serial/serial_mctrl_gpio.c:21:0:
include/uapi/asm-generic/termios.h:22:8: error: redefinition of 'struct termio'
./arch/sparc/include/uapi/asm/termbits.h:16:8: note: originally defined here
make[3]: *** [drivers/tty/serial/serial_mctrl_gpio.o] Error 1

Reported-by: Guenter Roeck 
Signed-off-by: Alexander Shiyan 
Signed-off-by: Greg Kroah-Hartman