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NFC: nci: add generic uart support

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Some NFC controller supports UART as host interface.
As with SPI, a lot of code can be shared between vendor
drivers. This patch add the generic support of UART and
provides some extension API for vendor specific needs.

This code is strongly inspired by the Bluetooth HCI ldisc
implementation. NCI UART vendor drivers will have to register
themselves to this layer via nci_uart_register.

Underlying tty will have to be configured from user land
thanks to an ioctl.

Signed-off-by: Vincent Cuissard <cuissard@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Vincent Cuissard 2015-06-11 11:25:47 +02:00 • committed by Samuel Ortiz
commit 9961127d4b
6 changed files with 554 additions and 0 deletions
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include/uapi/linux/tty.h
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@ -34,5 +34,6 @@
#define N_TI_WL 22 /* for TI's WL BT, FM, GPS combo chips */
#define N_TRACESINK 23 /* Trace data routing for MIPI P1149.7 */
#define N_TRACEROUTER 24 /* Trace data routing for MIPI P1149.7 */
#define N_NCI 25 /* NFC NCI UART */
#endif /* _UAPI_LINUX_TTY_H */