UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

serial: 8250_dwlib: Fill in rs485_supported 

Add information on supported serial_rs485 features. When the driver is
using em485, take advantage of serial8250_em485_supported.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220606100433.13793-7-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ilpo Järvinen 2022-06-06 13:04:03 +03:00 committed by Greg Kroah-Hartman
parent 499b1160bc
commit 62a4b3d274
1 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/tty/serial/8250/8250_dwlib.c
View File

@ -149,6 +149,11 @@ static bool dw8250_detect_rs485_hw(struct uart_port *p)
return reg;
}
static const struct serial_rs485 dw8250_rs485_supported = {
.flags = SER_RS485_ENABLED | SER_RS485_RX_DURING_TX | SER_RS485_RTS_ON_SEND |
SER_RS485_RTS_AFTER_SEND,
};
void dw8250_setup_port(struct uart_port *p)
{
struct dw8250_port_data *pd = p->private_data;
@ -159,8 +164,10 @@ void dw8250_setup_port(struct uart_port *p)
pd->hw_rs485_support = dw8250_detect_rs485_hw(p);
if (pd->hw_rs485_support) {
p->rs485_config = dw8250_rs485_config;
p->rs485_supported = &dw8250_rs485_supported;
} else {
p->rs485_config = serial8250_em485_config;
p->rs485_supported = &serial8250_em485_supported;
up->rs485_start_tx = serial8250_em485_start_tx;
up->rs485_stop_tx = serial8250_em485_stop_tx;
}