From: Ilpo Järvinen Date: Mon, 6 Jun 2022 10:04:05 +0000 (+0300) Subject: serial: 8250_fintek: Fill in rs485_supported X-Git-Tag: v6.0-rc1~64^2~123 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=70780464846f763c00aa4fa3fda67525d3bb7fe8;p=linux-block.git 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 Link: https://lore.kernel.org/r/20220606100433.13793-9-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/tty/serial/8250/8250_fintek.c b/drivers/tty/serial/8250/8250_fintek.c index dba5950b8d0e..6e98c376e082 100644 --- a/drivers/tty/serial/8250/8250_fintek.c +++ b/drivers/tty/serial/8250/8250_fintek.c @@ -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 */