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serial: 8250_fintek: Fill in rs485_supported 

Add information on supported serial_rs485 features.

Differentiate based on which port is in question.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220606100433.13793-9-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ilpo Järvinen 2022-06-06 13:04:05 +03:00 committed by Greg Kroah-Hartman
parent 59c221f8e1
commit 7078046484
1 changed files with 15 additions and 0 deletions
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15
drivers/tty/serial/8250/8250_fintek.c
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@ -424,6 +424,17 @@ static int probe_setup_port(struct fintek_8250 *pdata,
return -ENODEV;
}
/* Only the first port supports delays */
static const struct serial_rs485 fintek_8250_rs485_supported_port0 = {
.flags = SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND | SER_RS485_RTS_AFTER_SEND,
.delay_rts_before_send = 1,
.delay_rts_after_send = 1,
};
static const struct serial_rs485 fintek_8250_rs485_supported = {
.flags = SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND | SER_RS485_RTS_AFTER_SEND,
};
static void fintek_8250_set_rs485_handler(struct uart_8250_port *uart)
{
struct fintek_8250 *pdata = uart->port.private_data;
@ -435,6 +446,10 @@ static void fintek_8250_set_rs485_handler(struct uart_8250_port *uart)
case CHIP_ID_F81866:
case CHIP_ID_F81865:
uart->port.rs485_config = fintek_8250_rs485_config;
if (!pdata->index)
uart->port.rs485_supported = &fintek_8250_rs485_supported_port0;
else
uart->port.rs485_supported = &fintek_8250_rs485_supported;
break;
default: /* No RS485 Auto direction functional */