From: Rudy <oleszczyk.m@xxxxxxxxx>
Remove default RS485 flag setting. Prepare separated function
which reads RS485 configuration from device tree instead.
Signed-off-by: Michal Oleszczyk <oleszczyk.m@xxxxxxxxx>
---
drivers/tty/serial/imx.c | 34 ++++++++++++++++++++++++++++++++--
1 file changed, 32 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index dfeff39..576e53b 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -2076,6 +2076,37 @@ static void serial_imx_probe_pdata(struct imx_port *sport,
sport->have_rtscts = 1;
}
+static void serial_imx_probe_rs485(struct imx_port *sport,
+ struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct serial_rs485 *rs485conf = &sport->port.rs485;
+ u32 rs485_delay[2];
+
+ rs485conf->flags = 0;
+ if (!np)
+ return;
+
+ if (of_property_read_bool(np, "rs485-rts-active-high"))
+ rs485conf->flags |= SER_RS485_RTS_ON_SEND;
+ else
+ rs485conf->flags |= SER_RS485_RTS_AFTER_SEND;
+
+ if (of_property_read_u32_array(np, "rs485-rts-delay",
+ rs485_delay, 2) == 0) {
+ rs485conf->delay_rts_before_send = rs485_delay[0];
+ rs485conf->delay_rts_after_send = rs485_delay[1];
+ }
+
+ if (of_property_read_bool(np, "rs485-rx-during-tx"))
+ rs485conf->flags |= SER_RS485_RX_DURING_TX;
+
+ if (of_property_read_bool(np, "linux,rs485-enabled-at-boot-time"))
+ rs485conf->flags |= SER_RS485_ENABLED;
+
+ return;
+}
+
static int serial_imx_probe(struct platform_device *pdev)
{
struct imx_port *sport;
@@ -2094,6 +2125,7 @@ static int serial_imx_probe(struct platform_device *pdev)
else if (ret < 0)
return ret;
+ serial_imx_probe_rs485(sport, pdev);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(base))
@@ -2112,8 +2144,6 @@ static int serial_imx_probe(struct platform_device *pdev)
sport->port.fifosize = 32;
sport->port.ops = &imx_pops;
sport->port.rs485_config = imx_rs485_config;
- sport->port.rs485.flags =
- SER_RS485_RTS_ON_SEND | SER_RS485_RX_DURING_TX;
sport->port.flags = UPF_BOOT_AUTOCONF;
init_timer(&sport->timer);
sport->timer.function = imx_timeout;
--
2.7.4
--
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