diff options
| author | Rob Herring | 2017-02-02 13:48:07 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2017-02-03 10:17:02 +0100 |
| commit | cd6484e1830be260abfba80a9c7d8f65531126d6 (patch) | |
| tree | b21b8127a0f6cfa39a084fafb98f0c9871def790 /drivers/char | |
| parent | c1c98dadb2de5d9645bdd142536ca81ca28361f7 (diff) | |
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>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index fde005ef9d36..db8f74bbaf3e 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -46,6 +46,7 @@ config SGI_MBCS say Y or M here, otherwise say N. source "drivers/tty/serial/Kconfig" +source "drivers/tty/serdev/Kconfig" config TTY_PRINTK tristate "TTY driver to output user messages via printk" |