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* serdev: Add trivial blocking read functionAndrey Smirnov2018-04-171-0/+8
| | | | | | | | | | | Add example implementation of a trivial blocking read function as a part of Barebox's serdev API. NOTE: This code has not been tested against real devices, so use it at your own risk. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* console: Add simplified 'serdev' framework from Linux kernelAndrey Smirnov2018-04-171-0/+36
Port 'serdev' UART-slave deivce framework found in recent Linux kernels (post 4.13) in order to be able to port 'serdev' slave drivers from Linux. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>