> This patch adds the Ethernet over UART driver for the
> Qualcomm QCA7000 HomePlug GreenPHY.
> Signed-off-by: Stefan Wahren <stefan.wah...@i2se.com>
> drivers/net/ethernet/qualcomm/Kconfig | 12 +
> drivers/net/ethernet/qualcomm/Makefile | 2 +
> drivers/net/ethernet/qualcomm/qca_common.h | 6 +
> drivers/net/ethernet/qualcomm/qca_uart.c | 447 +++++++++++++++++++++++++++++
> include/uapi/linux/tty.h | 1 +
> 5 files changed, 468 insertions(+)
> create mode 100644 drivers/net/ethernet/qualcomm/qca_uart.c
> diff --git a/drivers/net/ethernet/qualcomm/Kconfig
> index 0d33728..0ede46e 100644
> --- a/drivers/net/ethernet/qualcomm/Kconfig
> +++ b/drivers/net/ethernet/qualcomm/Kconfig
> @@ -30,6 +30,18 @@ config QCA7000_SPI
> To compile this driver as a module, choose M here. The module
> will be called qcaspi.
> +config QCA7000_UART
> + tristate "Qualcomm Atheros QCA7000 UART support"
> + select QCA7000
> + depends on TTY
> + ---help---
> + This UART protocol driver supports the Qualcomm Atheros QCA7000.
> + The driver implements the tty line discipline N_QCA7K and supports
> + only one netdevice.
> + To compile this driver as a module, choose M here. The module
> + will be called qcauart.
this seems to be another candidate for having a proper UART or serial bus.
Instead of adding one line discipline after another, I think we need to get
quickly to having an enumerable bus here.