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linux-sg2042/drivers/tty/serdev/Kconfig

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tty: add SPDX identifiers to Kconfig and Makefiles There were a few Kconfig and Makefiles under drivers/tty/ that were missing a SPDX identifier. Fix that up so that automated tools can properly classify all kernel source files. Cc: Jiri Slaby <jslaby@suse.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: Rob Herring <robh@kernel.org> Acked-by: David Sterba <dsterba@suse.com> Reviewed-by: Mukesh Ojha <mojha@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-02 22:07:07 +08:00
# SPDX-License-Identifier: GPL-2.0
serdev: Introduce new bus for serial attached devices The serdev bus is designed for devices such as Bluetooth, WiFi, GPS and NFC connected to UARTs on host processors. Tradionally these have been handled with tty line disciplines, rfkill, and userspace glue such as hciattach. This approach has many drawbacks since it doesn't fit into the Linux driver model. Handling of sideband signals, power control and firmware loading are the main issues. This creates a serdev bus with controllers (i.e. host serial ports) and attached devices. Typically, these are point to point connections, but some devices have muxing protocols or a h/w mux is conceivable. Any muxing is not yet supported with the serdev bus. Signed-off-by: Rob Herring <robh@kernel.org> Reviewed-By: Sebastian Reichel <sre@kernel.org> Tested-By: Sebastian Reichel <sre@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-03 03:48:07 +08:00
#
# Serial bus device driver configuration
#
menuconfig SERIAL_DEV_BUS
tristate "Serial device bus"
help
Core support for devices connected via a serial port.
serdev: enable TTY port controller support by default Amend the Serial device bus Kconfig entries to clarify that you most likely also want to enable TTY port controller support, and make SERIAL_DEV_CTRL_TTYPORT default to Y (when bus support is enabled). Note that the TTY port controller is currently the only in-kernel serdev controller implementation. Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-09 17:41:33 +08:00
Note that you typically also want to enable TTY port controller support.
serdev: add a tty port controller driver Add a serdev controller driver for tty ports. The controller is registered with serdev when tty ports are registered with the TTY core. As the TTY core is built-in only, this has the side effect of making serdev built-in as well. Signed-off-by: Rob Herring <robh@kernel.org> Reviewed-By: Sebastian Reichel <sre@kernel.org> Tested-By: Sebastian Reichel <sre@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-03 03:48:08 +08:00
if SERIAL_DEV_BUS
config SERIAL_DEV_CTRL_TTYPORT
bool "Serial device TTY port controller"
serdev: enable TTY port controller support by default Amend the Serial device bus Kconfig entries to clarify that you most likely also want to enable TTY port controller support, and make SERIAL_DEV_CTRL_TTYPORT default to Y (when bus support is enabled). Note that the TTY port controller is currently the only in-kernel serdev controller implementation. Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-09 17:41:33 +08:00
help
Say Y here if you want to use the Serial device bus with common TTY
drivers (e.g. serial drivers).
If unsure, say Y.
serdev: add a tty port controller driver Add a serdev controller driver for tty ports. The controller is registered with serdev when tty ports are registered with the TTY core. As the TTY core is built-in only, this has the side effect of making serdev built-in as well. Signed-off-by: Rob Herring <robh@kernel.org> Reviewed-By: Sebastian Reichel <sre@kernel.org> Tested-By: Sebastian Reichel <sre@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-03 03:48:08 +08:00
depends on TTY
depends on SERIAL_DEV_BUS != m
serdev: enable TTY port controller support by default Amend the Serial device bus Kconfig entries to clarify that you most likely also want to enable TTY port controller support, and make SERIAL_DEV_CTRL_TTYPORT default to Y (when bus support is enabled). Note that the TTY port controller is currently the only in-kernel serdev controller implementation. Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-09 17:41:33 +08:00
default y
serdev: add a tty port controller driver Add a serdev controller driver for tty ports. The controller is registered with serdev when tty ports are registered with the TTY core. As the TTY core is built-in only, this has the side effect of making serdev built-in as well. Signed-off-by: Rob Herring <robh@kernel.org> Reviewed-By: Sebastian Reichel <sre@kernel.org> Tested-By: Sebastian Reichel <sre@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-03 03:48:08 +08:00
endif