Messages in this thread | | | Subject | Re: [PATCH v2] serio: PS2 gpio bit banging driver for the serio bus | From | Randy Dunlap <> | Date | Mon, 31 Jul 2017 16:34:23 -0700 |
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On 07/31/2017 03:35 PM, Danilo Krummrich wrote:
> diff --git a/Documentation/gpio/drivers-on-gpio.txt b/Documentation/gpio/drivers-on-gpio.txt > index 3065132..b106e72 100644 > --- a/Documentation/gpio/drivers-on-gpio.txt > +++ b/Documentation/gpio/drivers-on-gpio.txt > @@ -84,6 +84,11 @@ hardware descriptions such as device tree or ACPI: > NAND flash MTD subsystem and provides chip access and partition parsing like > any other NAND driving hardware. > > +- ps2-gpio: drivers/input/serio/ps2-gpio.c is used to drive an PS2 serio bus,
drive a PS2 Is this PS2 as in IBM Micro Channel or PlayStation 2?
> + data and clock line, by bit banging two GPIO lines. It will appear as any > + other serio bus to the system and makes it possible to connect drivers for > + e.g. keyboards and other PS2 protocol based devices. > + > Apart from this there are special GPIO drivers in subsystems like MMC/SD to > read card detect and write protect GPIO lines, and in the TTY serial subsystem > to emulate MCTRL (modem control) signals CTS/RTS by using two GPIO lines. The > diff --git a/drivers/input/serio/Kconfig b/drivers/input/serio/Kconfig > index c3d05b4..abca0e0 100644 > --- a/drivers/input/serio/Kconfig > +++ b/drivers/input/serio/Kconfig > @@ -292,6 +292,16 @@ config SERIO_SUN4I_PS2 > To compile this driver as a module, choose M here: the > module will be called sun4i-ps2. > > +config SERIO_GPIO_PS2 > + tristate "GPIO PS/2 bit banging driver"
depends on GPIO ??
> + help > + Say Y here if you want PS/2 bit banging support via GPIO. > + > + To compile this driver as a module, choose M here: the > + module will be called gpio-ps2. > + > + If you are unsure, say N. > + > config USERIO > tristate "User space serio port driver support" > help
-- ~Randy
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