diff options
| author | Christoph Niedermaier <cniedermaier@dh-electronics.com> | 2022-12-02 11:41:25 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-01-19 16:01:35 +0100 |
| commit | 163f080eb717d237f02d9a8c179b07ed31fdd6ad (patch) | |
| tree | 89c8528fa505f8e9ad81efc982a57f6016c1976b /include/linux/serial_core.h | |
| parent | 45c1d967a762ad8df7e1ccfa4a22dd77e2efa3b8 (diff) | |
serial: core: Add option to output RS485 RX_DURING_TX state via GPIO
This patch provides a generic GPIO variable for outputting the state
of RS485 RX_DURING_TX. The GPIO is defined by the devicetree property
"rs485-rx-during-tx-gpios". To use it in a low level serial driver,
the evaluation of this variable must be implemented there accordingly.
Signed-off-by: Christoph Niedermaier <cniedermaier@dh-electronics.com>
Link: https://lore.kernel.org/r/20221202104127.122761-2-cniedermaier@dh-electronics.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/serial_core.h')
| -rw-r--r-- | include/linux/serial_core.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 026294c6ccb8..0b37a86bedc5 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -579,6 +579,7 @@ struct uart_port { struct serial_rs485 rs485; struct serial_rs485 rs485_supported; /* Supported mask for serial_rs485 */ struct gpio_desc *rs485_term_gpio; /* enable RS485 bus termination */ + struct gpio_desc *rs485_rx_during_tx_gpio; /* Output GPIO that sets the state of RS485 RX during TX */ struct serial_iso7816 iso7816; void *private_data; /* generic platform data pointer */ }; |